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1 | 31e31b8a | bellard | /*
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2 | 66fb9763 | bellard | * Emulation of Linux signals
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3 | 5fafdf24 | ths | *
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4 | 31e31b8a | bellard | * Copyright (c) 2003 Fabrice Bellard
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5 | 31e31b8a | bellard | *
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6 | 31e31b8a | bellard | * This program is free software; you can redistribute it and/or modify
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7 | 31e31b8a | bellard | * it under the terms of the GNU General Public License as published by
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8 | 31e31b8a | bellard | * the Free Software Foundation; either version 2 of the License, or
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9 | 31e31b8a | bellard | * (at your option) any later version.
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10 | 31e31b8a | bellard | *
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11 | 31e31b8a | bellard | * This program is distributed in the hope that it will be useful,
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12 | 31e31b8a | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 31e31b8a | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | 31e31b8a | bellard | * GNU General Public License for more details.
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15 | 31e31b8a | bellard | *
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16 | 31e31b8a | bellard | * You should have received a copy of the GNU General Public License
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17 | 8167ee88 | Blue Swirl | * along with this program; if not, see <http://www.gnu.org/licenses/>.
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18 | 31e31b8a | bellard | */
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19 | 31e31b8a | bellard | #include <stdlib.h> |
20 | 31e31b8a | bellard | #include <stdio.h> |
21 | 66fb9763 | bellard | #include <string.h> |
22 | 31e31b8a | bellard | #include <stdarg.h> |
23 | 2677e107 | bellard | #include <unistd.h> |
24 | 31e31b8a | bellard | #include <signal.h> |
25 | 66fb9763 | bellard | #include <errno.h> |
26 | 603e4fd7 | aurel32 | #include <assert.h> |
27 | 31e31b8a | bellard | #include <sys/ucontext.h> |
28 | edf8e2af | Mika Westerberg | #include <sys/resource.h> |
29 | 31e31b8a | bellard | |
30 | 3ef693a0 | bellard | #include "qemu.h" |
31 | 7d99a001 | blueswir1 | #include "qemu-common.h" |
32 | 992f48a0 | blueswir1 | #include "target_signal.h" |
33 | 66fb9763 | bellard | |
34 | 66fb9763 | bellard | //#define DEBUG_SIGNAL
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35 | 66fb9763 | bellard | |
36 | 249c4c32 | blueswir1 | static struct target_sigaltstack target_sigaltstack_used = { |
37 | a04e134a | ths | .ss_sp = 0,
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38 | a04e134a | ths | .ss_size = 0,
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39 | a04e134a | ths | .ss_flags = TARGET_SS_DISABLE, |
40 | a04e134a | ths | }; |
41 | a04e134a | ths | |
42 | 624f7979 | pbrook | static struct target_sigaction sigact_table[TARGET_NSIG]; |
43 | 31e31b8a | bellard | |
44 | 5fafdf24 | ths | static void host_signal_handler(int host_signum, siginfo_t *info, |
45 | 66fb9763 | bellard | void *puc);
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46 | 66fb9763 | bellard | |
47 | 9e5f5284 | bellard | static uint8_t host_to_target_signal_table[65] = { |
48 | 9e5f5284 | bellard | [SIGHUP] = TARGET_SIGHUP, |
49 | 9e5f5284 | bellard | [SIGINT] = TARGET_SIGINT, |
50 | 9e5f5284 | bellard | [SIGQUIT] = TARGET_SIGQUIT, |
51 | 9e5f5284 | bellard | [SIGILL] = TARGET_SIGILL, |
52 | 9e5f5284 | bellard | [SIGTRAP] = TARGET_SIGTRAP, |
53 | 9e5f5284 | bellard | [SIGABRT] = TARGET_SIGABRT, |
54 | 01e3b763 | bellard | /* [SIGIOT] = TARGET_SIGIOT,*/
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55 | 9e5f5284 | bellard | [SIGBUS] = TARGET_SIGBUS, |
56 | 9e5f5284 | bellard | [SIGFPE] = TARGET_SIGFPE, |
57 | 9e5f5284 | bellard | [SIGKILL] = TARGET_SIGKILL, |
58 | 9e5f5284 | bellard | [SIGUSR1] = TARGET_SIGUSR1, |
59 | 9e5f5284 | bellard | [SIGSEGV] = TARGET_SIGSEGV, |
60 | 9e5f5284 | bellard | [SIGUSR2] = TARGET_SIGUSR2, |
61 | 9e5f5284 | bellard | [SIGPIPE] = TARGET_SIGPIPE, |
62 | 9e5f5284 | bellard | [SIGALRM] = TARGET_SIGALRM, |
63 | 9e5f5284 | bellard | [SIGTERM] = TARGET_SIGTERM, |
64 | 9e5f5284 | bellard | #ifdef SIGSTKFLT
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65 | 9e5f5284 | bellard | [SIGSTKFLT] = TARGET_SIGSTKFLT, |
66 | 9e5f5284 | bellard | #endif
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67 | 9e5f5284 | bellard | [SIGCHLD] = TARGET_SIGCHLD, |
68 | 9e5f5284 | bellard | [SIGCONT] = TARGET_SIGCONT, |
69 | 9e5f5284 | bellard | [SIGSTOP] = TARGET_SIGSTOP, |
70 | 9e5f5284 | bellard | [SIGTSTP] = TARGET_SIGTSTP, |
71 | 9e5f5284 | bellard | [SIGTTIN] = TARGET_SIGTTIN, |
72 | 9e5f5284 | bellard | [SIGTTOU] = TARGET_SIGTTOU, |
73 | 9e5f5284 | bellard | [SIGURG] = TARGET_SIGURG, |
74 | 9e5f5284 | bellard | [SIGXCPU] = TARGET_SIGXCPU, |
75 | 9e5f5284 | bellard | [SIGXFSZ] = TARGET_SIGXFSZ, |
76 | 9e5f5284 | bellard | [SIGVTALRM] = TARGET_SIGVTALRM, |
77 | 9e5f5284 | bellard | [SIGPROF] = TARGET_SIGPROF, |
78 | 9e5f5284 | bellard | [SIGWINCH] = TARGET_SIGWINCH, |
79 | 9e5f5284 | bellard | [SIGIO] = TARGET_SIGIO, |
80 | 9e5f5284 | bellard | [SIGPWR] = TARGET_SIGPWR, |
81 | 9e5f5284 | bellard | [SIGSYS] = TARGET_SIGSYS, |
82 | 9e5f5284 | bellard | /* next signals stay the same */
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83 | 624f7979 | pbrook | /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with
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84 | 624f7979 | pbrook | host libpthread signals. This assumes noone actually uses SIGRTMAX :-/
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85 | 624f7979 | pbrook | To fix this properly we need to do manual signal delivery multiplexed
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86 | 624f7979 | pbrook | over a single host signal. */
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87 | 624f7979 | pbrook | [__SIGRTMIN] = __SIGRTMAX, |
88 | 624f7979 | pbrook | [__SIGRTMAX] = __SIGRTMIN, |
89 | 9e5f5284 | bellard | }; |
90 | 9e5f5284 | bellard | static uint8_t target_to_host_signal_table[65]; |
91 | 9e5f5284 | bellard | |
92 | a04e134a | ths | static inline int on_sig_stack(unsigned long sp) |
93 | a04e134a | ths | { |
94 | a04e134a | ths | return (sp - target_sigaltstack_used.ss_sp
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95 | a04e134a | ths | < target_sigaltstack_used.ss_size); |
96 | a04e134a | ths | } |
97 | a04e134a | ths | |
98 | a04e134a | ths | static inline int sas_ss_flags(unsigned long sp) |
99 | a04e134a | ths | { |
100 | a04e134a | ths | return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE |
101 | a04e134a | ths | : on_sig_stack(sp) ? SS_ONSTACK : 0);
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102 | a04e134a | ths | } |
103 | a04e134a | ths | |
104 | 1d9d8b55 | pbrook | int host_to_target_signal(int sig) |
105 | 31e31b8a | bellard | { |
106 | 4cb05961 | pbrook | if (sig > 64) |
107 | 4cb05961 | pbrook | return sig;
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108 | 9e5f5284 | bellard | return host_to_target_signal_table[sig];
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109 | 31e31b8a | bellard | } |
110 | 31e31b8a | bellard | |
111 | 4cb05961 | pbrook | int target_to_host_signal(int sig) |
112 | 31e31b8a | bellard | { |
113 | 4cb05961 | pbrook | if (sig > 64) |
114 | 4cb05961 | pbrook | return sig;
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115 | 9e5f5284 | bellard | return target_to_host_signal_table[sig];
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116 | 31e31b8a | bellard | } |
117 | 31e31b8a | bellard | |
118 | c227f099 | Anthony Liguori | static inline void target_sigemptyset(target_sigset_t *set) |
119 | f5545b5c | pbrook | { |
120 | f5545b5c | pbrook | memset(set, 0, sizeof(*set)); |
121 | f5545b5c | pbrook | } |
122 | f5545b5c | pbrook | |
123 | c227f099 | Anthony Liguori | static inline void target_sigaddset(target_sigset_t *set, int signum) |
124 | f5545b5c | pbrook | { |
125 | f5545b5c | pbrook | signum--; |
126 | f5545b5c | pbrook | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW);
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127 | f5545b5c | pbrook | set->sig[signum / TARGET_NSIG_BPW] |= mask; |
128 | f5545b5c | pbrook | } |
129 | f5545b5c | pbrook | |
130 | c227f099 | Anthony Liguori | static inline int target_sigismember(const target_sigset_t *set, int signum) |
131 | f5545b5c | pbrook | { |
132 | f5545b5c | pbrook | signum--; |
133 | f5545b5c | pbrook | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW);
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134 | f5545b5c | pbrook | return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0); |
135 | f5545b5c | pbrook | } |
136 | f5545b5c | pbrook | |
137 | c227f099 | Anthony Liguori | static void host_to_target_sigset_internal(target_sigset_t *d, |
138 | 9231944d | bellard | const sigset_t *s)
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139 | 66fb9763 | bellard | { |
140 | 66fb9763 | bellard | int i;
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141 | f5545b5c | pbrook | target_sigemptyset(d); |
142 | f5545b5c | pbrook | for (i = 1; i <= TARGET_NSIG; i++) { |
143 | f5545b5c | pbrook | if (sigismember(s, i)) {
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144 | f5545b5c | pbrook | target_sigaddset(d, host_to_target_signal(i)); |
145 | f5545b5c | pbrook | } |
146 | 66fb9763 | bellard | } |
147 | 66fb9763 | bellard | } |
148 | 66fb9763 | bellard | |
149 | c227f099 | Anthony Liguori | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
150 | 9231944d | bellard | { |
151 | c227f099 | Anthony Liguori | target_sigset_t d1; |
152 | 9231944d | bellard | int i;
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153 | 9231944d | bellard | |
154 | 9231944d | bellard | host_to_target_sigset_internal(&d1, s); |
155 | 9231944d | bellard | for(i = 0;i < TARGET_NSIG_WORDS; i++) |
156 | 53a5960a | pbrook | d->sig[i] = tswapl(d1.sig[i]); |
157 | 9231944d | bellard | } |
158 | 9231944d | bellard | |
159 | 8fcd3692 | blueswir1 | static void target_to_host_sigset_internal(sigset_t *d, |
160 | c227f099 | Anthony Liguori | const target_sigset_t *s)
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161 | 66fb9763 | bellard | { |
162 | 66fb9763 | bellard | int i;
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163 | f5545b5c | pbrook | sigemptyset(d); |
164 | f5545b5c | pbrook | for (i = 1; i <= TARGET_NSIG; i++) { |
165 | f5545b5c | pbrook | if (target_sigismember(s, i)) {
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166 | f5545b5c | pbrook | sigaddset(d, target_to_host_signal(i)); |
167 | f5545b5c | pbrook | } |
168 | f5545b5c | pbrook | } |
169 | 66fb9763 | bellard | } |
170 | 66fb9763 | bellard | |
171 | c227f099 | Anthony Liguori | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
172 | 9231944d | bellard | { |
173 | c227f099 | Anthony Liguori | target_sigset_t s1; |
174 | 9231944d | bellard | int i;
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175 | 9231944d | bellard | |
176 | 9231944d | bellard | for(i = 0;i < TARGET_NSIG_WORDS; i++) |
177 | 53a5960a | pbrook | s1.sig[i] = tswapl(s->sig[i]); |
178 | 9231944d | bellard | target_to_host_sigset_internal(d, &s1); |
179 | 9231944d | bellard | } |
180 | 3b46e624 | ths | |
181 | 992f48a0 | blueswir1 | void host_to_target_old_sigset(abi_ulong *old_sigset,
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182 | 66fb9763 | bellard | const sigset_t *sigset)
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183 | 66fb9763 | bellard | { |
184 | c227f099 | Anthony Liguori | target_sigset_t d; |
185 | 9e5f5284 | bellard | host_to_target_sigset(&d, sigset); |
186 | 9e5f5284 | bellard | *old_sigset = d.sig[0];
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187 | 66fb9763 | bellard | } |
188 | 66fb9763 | bellard | |
189 | 5fafdf24 | ths | void target_to_host_old_sigset(sigset_t *sigset,
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190 | 992f48a0 | blueswir1 | const abi_ulong *old_sigset)
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191 | 66fb9763 | bellard | { |
192 | c227f099 | Anthony Liguori | target_sigset_t d; |
193 | 9e5f5284 | bellard | int i;
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194 | 9e5f5284 | bellard | |
195 | 9e5f5284 | bellard | d.sig[0] = *old_sigset;
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196 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) |
197 | 9e5f5284 | bellard | d.sig[i] = 0;
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198 | 9e5f5284 | bellard | target_to_host_sigset(sigset, &d); |
199 | 66fb9763 | bellard | } |
200 | 66fb9763 | bellard | |
201 | 9de5e440 | bellard | /* siginfo conversion */
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202 | 9de5e440 | bellard | |
203 | c227f099 | Anthony Liguori | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
204 | 9de5e440 | bellard | const siginfo_t *info)
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205 | 66fb9763 | bellard | { |
206 | 9de5e440 | bellard | int sig;
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207 | 9de5e440 | bellard | sig = host_to_target_signal(info->si_signo); |
208 | 9de5e440 | bellard | tinfo->si_signo = sig; |
209 | 9de5e440 | bellard | tinfo->si_errno = 0;
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210 | afd7cd92 | pbrook | tinfo->si_code = info->si_code; |
211 | 5fafdf24 | ths | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
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212 | 447db213 | bellard | sig == SIGBUS || sig == SIGTRAP) { |
213 | 9de5e440 | bellard | /* should never come here, but who knows. The information for
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214 | 9de5e440 | bellard | the target is irrelevant */
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215 | 9de5e440 | bellard | tinfo->_sifields._sigfault._addr = 0;
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216 | 7f7f7c84 | ths | } else if (sig == SIGIO) { |
217 | 7f7f7c84 | ths | tinfo->_sifields._sigpoll._fd = info->si_fd; |
218 | 9de5e440 | bellard | } else if (sig >= TARGET_SIGRTMIN) { |
219 | 9de5e440 | bellard | tinfo->_sifields._rt._pid = info->si_pid; |
220 | 9de5e440 | bellard | tinfo->_sifields._rt._uid = info->si_uid; |
221 | 9de5e440 | bellard | /* XXX: potential problem if 64 bit */
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222 | 5fafdf24 | ths | tinfo->_sifields._rt._sigval.sival_ptr = |
223 | 459a4017 | bellard | (abi_ulong)(unsigned long)info->si_value.sival_ptr; |
224 | 9de5e440 | bellard | } |
225 | 9de5e440 | bellard | } |
226 | 9de5e440 | bellard | |
227 | c227f099 | Anthony Liguori | static void tswap_siginfo(target_siginfo_t *tinfo, |
228 | c227f099 | Anthony Liguori | const target_siginfo_t *info)
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229 | 9de5e440 | bellard | { |
230 | 9de5e440 | bellard | int sig;
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231 | 9de5e440 | bellard | sig = info->si_signo; |
232 | 9de5e440 | bellard | tinfo->si_signo = tswap32(sig); |
233 | 66fb9763 | bellard | tinfo->si_errno = tswap32(info->si_errno); |
234 | 66fb9763 | bellard | tinfo->si_code = tswap32(info->si_code); |
235 | 5fafdf24 | ths | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
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236 | 447db213 | bellard | sig == SIGBUS || sig == SIGTRAP) { |
237 | 5fafdf24 | ths | tinfo->_sifields._sigfault._addr = |
238 | 9de5e440 | bellard | tswapl(info->_sifields._sigfault._addr); |
239 | 7f7f7c84 | ths | } else if (sig == SIGIO) { |
240 | 7f7f7c84 | ths | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); |
241 | 9de5e440 | bellard | } else if (sig >= TARGET_SIGRTMIN) { |
242 | 9de5e440 | bellard | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); |
243 | 9de5e440 | bellard | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); |
244 | 5fafdf24 | ths | tinfo->_sifields._rt._sigval.sival_ptr = |
245 | 9de5e440 | bellard | tswapl(info->_sifields._rt._sigval.sival_ptr); |
246 | 9de5e440 | bellard | } |
247 | 9de5e440 | bellard | } |
248 | 9de5e440 | bellard | |
249 | 9de5e440 | bellard | |
250 | c227f099 | Anthony Liguori | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
251 | 9de5e440 | bellard | { |
252 | 9de5e440 | bellard | host_to_target_siginfo_noswap(tinfo, info); |
253 | 9de5e440 | bellard | tswap_siginfo(tinfo, tinfo); |
254 | 66fb9763 | bellard | } |
255 | 66fb9763 | bellard | |
256 | 9de5e440 | bellard | /* XXX: we support only POSIX RT signals are used. */
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257 | aa1f17c1 | ths | /* XXX: find a solution for 64 bit (additional malloced data is needed) */
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258 | c227f099 | Anthony Liguori | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
259 | 66fb9763 | bellard | { |
260 | 66fb9763 | bellard | info->si_signo = tswap32(tinfo->si_signo); |
261 | 66fb9763 | bellard | info->si_errno = tswap32(tinfo->si_errno); |
262 | 66fb9763 | bellard | info->si_code = tswap32(tinfo->si_code); |
263 | 9de5e440 | bellard | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
264 | 9de5e440 | bellard | info->si_uid = tswap32(tinfo->_sifields._rt._uid); |
265 | 5fafdf24 | ths | info->si_value.sival_ptr = |
266 | 459a4017 | bellard | (void *)(long)tswapl(tinfo->_sifields._rt._sigval.sival_ptr); |
267 | 66fb9763 | bellard | } |
268 | 66fb9763 | bellard | |
269 | ca587a8e | aurel32 | static int fatal_signal (int sig) |
270 | ca587a8e | aurel32 | { |
271 | ca587a8e | aurel32 | switch (sig) {
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272 | ca587a8e | aurel32 | case TARGET_SIGCHLD:
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273 | ca587a8e | aurel32 | case TARGET_SIGURG:
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274 | ca587a8e | aurel32 | case TARGET_SIGWINCH:
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275 | ca587a8e | aurel32 | /* Ignored by default. */
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276 | ca587a8e | aurel32 | return 0; |
277 | ca587a8e | aurel32 | case TARGET_SIGCONT:
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278 | ca587a8e | aurel32 | case TARGET_SIGSTOP:
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279 | ca587a8e | aurel32 | case TARGET_SIGTSTP:
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280 | ca587a8e | aurel32 | case TARGET_SIGTTIN:
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281 | ca587a8e | aurel32 | case TARGET_SIGTTOU:
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282 | ca587a8e | aurel32 | /* Job control signals. */
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283 | ca587a8e | aurel32 | return 0; |
284 | ca587a8e | aurel32 | default:
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285 | ca587a8e | aurel32 | return 1; |
286 | ca587a8e | aurel32 | } |
287 | ca587a8e | aurel32 | } |
288 | ca587a8e | aurel32 | |
289 | edf8e2af | Mika Westerberg | /* returns 1 if given signal should dump core if not handled */
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290 | edf8e2af | Mika Westerberg | static int core_dump_signal(int sig) |
291 | edf8e2af | Mika Westerberg | { |
292 | edf8e2af | Mika Westerberg | switch (sig) {
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293 | edf8e2af | Mika Westerberg | case TARGET_SIGABRT:
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294 | edf8e2af | Mika Westerberg | case TARGET_SIGFPE:
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295 | edf8e2af | Mika Westerberg | case TARGET_SIGILL:
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296 | edf8e2af | Mika Westerberg | case TARGET_SIGQUIT:
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297 | edf8e2af | Mika Westerberg | case TARGET_SIGSEGV:
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298 | edf8e2af | Mika Westerberg | case TARGET_SIGTRAP:
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299 | edf8e2af | Mika Westerberg | case TARGET_SIGBUS:
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300 | edf8e2af | Mika Westerberg | return (1); |
301 | edf8e2af | Mika Westerberg | default:
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302 | edf8e2af | Mika Westerberg | return (0); |
303 | edf8e2af | Mika Westerberg | } |
304 | edf8e2af | Mika Westerberg | } |
305 | edf8e2af | Mika Westerberg | |
306 | 31e31b8a | bellard | void signal_init(void) |
307 | 31e31b8a | bellard | { |
308 | 31e31b8a | bellard | struct sigaction act;
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309 | 624f7979 | pbrook | struct sigaction oact;
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310 | 9e5f5284 | bellard | int i, j;
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311 | 624f7979 | pbrook | int host_sig;
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312 | 31e31b8a | bellard | |
313 | 9e5f5284 | bellard | /* generate signal conversion tables */
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314 | 9e5f5284 | bellard | for(i = 1; i <= 64; i++) { |
315 | 9e5f5284 | bellard | if (host_to_target_signal_table[i] == 0) |
316 | 9e5f5284 | bellard | host_to_target_signal_table[i] = i; |
317 | 9e5f5284 | bellard | } |
318 | 9e5f5284 | bellard | for(i = 1; i <= 64; i++) { |
319 | 9e5f5284 | bellard | j = host_to_target_signal_table[i]; |
320 | 9e5f5284 | bellard | target_to_host_signal_table[j] = i; |
321 | 9e5f5284 | bellard | } |
322 | 3b46e624 | ths | |
323 | 9de5e440 | bellard | /* set all host signal handlers. ALL signals are blocked during
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324 | 9de5e440 | bellard | the handlers to serialize them. */
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325 | 624f7979 | pbrook | memset(sigact_table, 0, sizeof(sigact_table)); |
326 | 624f7979 | pbrook | |
327 | 9de5e440 | bellard | sigfillset(&act.sa_mask); |
328 | 31e31b8a | bellard | act.sa_flags = SA_SIGINFO; |
329 | 31e31b8a | bellard | act.sa_sigaction = host_signal_handler; |
330 | 624f7979 | pbrook | for(i = 1; i <= TARGET_NSIG; i++) { |
331 | 624f7979 | pbrook | host_sig = target_to_host_signal(i); |
332 | 624f7979 | pbrook | sigaction(host_sig, NULL, &oact);
|
333 | 624f7979 | pbrook | if (oact.sa_sigaction == (void *)SIG_IGN) { |
334 | 624f7979 | pbrook | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN;
|
335 | 624f7979 | pbrook | } else if (oact.sa_sigaction == (void *)SIG_DFL) { |
336 | 624f7979 | pbrook | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL;
|
337 | 624f7979 | pbrook | } |
338 | 624f7979 | pbrook | /* If there's already a handler installed then something has
|
339 | 624f7979 | pbrook | gone horribly wrong, so don't even try to handle that case. */
|
340 | ca587a8e | aurel32 | /* Install some handlers for our own use. We need at least
|
341 | ca587a8e | aurel32 | SIGSEGV and SIGBUS, to detect exceptions. We can not just
|
342 | ca587a8e | aurel32 | trap all signals because it affects syscall interrupt
|
343 | ca587a8e | aurel32 | behavior. But do trap all default-fatal signals. */
|
344 | ca587a8e | aurel32 | if (fatal_signal (i))
|
345 | 624f7979 | pbrook | sigaction(host_sig, &act, NULL);
|
346 | 31e31b8a | bellard | } |
347 | 66fb9763 | bellard | } |
348 | 66fb9763 | bellard | |
349 | 66fb9763 | bellard | /* signal queue handling */
|
350 | 66fb9763 | bellard | |
351 | 624f7979 | pbrook | static inline struct sigqueue *alloc_sigqueue(CPUState *env) |
352 | 66fb9763 | bellard | { |
353 | 624f7979 | pbrook | TaskState *ts = env->opaque; |
354 | 624f7979 | pbrook | struct sigqueue *q = ts->first_free;
|
355 | 66fb9763 | bellard | if (!q)
|
356 | 66fb9763 | bellard | return NULL; |
357 | 624f7979 | pbrook | ts->first_free = q->next; |
358 | 66fb9763 | bellard | return q;
|
359 | 31e31b8a | bellard | } |
360 | 31e31b8a | bellard | |
361 | 624f7979 | pbrook | static inline void free_sigqueue(CPUState *env, struct sigqueue *q) |
362 | 66fb9763 | bellard | { |
363 | 624f7979 | pbrook | TaskState *ts = env->opaque; |
364 | 624f7979 | pbrook | q->next = ts->first_free; |
365 | 624f7979 | pbrook | ts->first_free = q; |
366 | 66fb9763 | bellard | } |
367 | 66fb9763 | bellard | |
368 | 9de5e440 | bellard | /* abort execution with signal */
|
369 | a5e50b26 | malc | static void QEMU_NORETURN force_sig(int sig) |
370 | 66fb9763 | bellard | { |
371 | edf8e2af | Mika Westerberg | TaskState *ts = (TaskState *)thread_env->opaque; |
372 | edf8e2af | Mika Westerberg | int host_sig, core_dumped = 0; |
373 | 603e4fd7 | aurel32 | struct sigaction act;
|
374 | 66fb9763 | bellard | host_sig = target_to_host_signal(sig); |
375 | ca587a8e | aurel32 | gdb_signalled(thread_env, sig); |
376 | 603e4fd7 | aurel32 | |
377 | edf8e2af | Mika Westerberg | /* dump core if supported by target binary format */
|
378 | edf8e2af | Mika Westerberg | if (core_dump_signal(sig) && (ts->bprm->core_dump != NULL)) { |
379 | edf8e2af | Mika Westerberg | stop_all_tasks(); |
380 | edf8e2af | Mika Westerberg | core_dumped = |
381 | edf8e2af | Mika Westerberg | ((*ts->bprm->core_dump)(sig, thread_env) == 0);
|
382 | edf8e2af | Mika Westerberg | } |
383 | edf8e2af | Mika Westerberg | if (core_dumped) {
|
384 | edf8e2af | Mika Westerberg | /* we already dumped the core of target process, we don't want
|
385 | edf8e2af | Mika Westerberg | * a coredump of qemu itself */
|
386 | edf8e2af | Mika Westerberg | struct rlimit nodump;
|
387 | edf8e2af | Mika Westerberg | getrlimit(RLIMIT_CORE, &nodump); |
388 | edf8e2af | Mika Westerberg | nodump.rlim_cur=0;
|
389 | edf8e2af | Mika Westerberg | setrlimit(RLIMIT_CORE, &nodump); |
390 | edf8e2af | Mika Westerberg | (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n", |
391 | edf8e2af | Mika Westerberg | sig, strsignal(host_sig), "core dumped" );
|
392 | edf8e2af | Mika Westerberg | } |
393 | edf8e2af | Mika Westerberg | |
394 | 603e4fd7 | aurel32 | /* The proper exit code for dieing from an uncaught signal is
|
395 | 603e4fd7 | aurel32 | * -<signal>. The kernel doesn't allow exit() or _exit() to pass
|
396 | 603e4fd7 | aurel32 | * a negative value. To get the proper exit code we need to
|
397 | 603e4fd7 | aurel32 | * actually die from an uncaught signal. Here the default signal
|
398 | 603e4fd7 | aurel32 | * handler is installed, we send ourself a signal and we wait for
|
399 | 603e4fd7 | aurel32 | * it to arrive. */
|
400 | 603e4fd7 | aurel32 | sigfillset(&act.sa_mask); |
401 | 603e4fd7 | aurel32 | act.sa_handler = SIG_DFL; |
402 | 603e4fd7 | aurel32 | sigaction(host_sig, &act, NULL);
|
403 | 603e4fd7 | aurel32 | |
404 | 603e4fd7 | aurel32 | /* For some reason raise(host_sig) doesn't send the signal when
|
405 | 603e4fd7 | aurel32 | * statically linked on x86-64. */
|
406 | 603e4fd7 | aurel32 | kill(getpid(), host_sig); |
407 | 603e4fd7 | aurel32 | |
408 | 603e4fd7 | aurel32 | /* Make sure the signal isn't masked (just reuse the mask inside
|
409 | 603e4fd7 | aurel32 | of act) */
|
410 | 603e4fd7 | aurel32 | sigdelset(&act.sa_mask, host_sig); |
411 | 603e4fd7 | aurel32 | sigsuspend(&act.sa_mask); |
412 | 603e4fd7 | aurel32 | |
413 | 603e4fd7 | aurel32 | /* unreachable */
|
414 | 603e4fd7 | aurel32 | assert(0);
|
415 | 603e4fd7 | aurel32 | |
416 | 66fb9763 | bellard | } |
417 | 66fb9763 | bellard | |
418 | 9de5e440 | bellard | /* queue a signal so that it will be send to the virtual CPU as soon
|
419 | 9de5e440 | bellard | as possible */
|
420 | c227f099 | Anthony Liguori | int queue_signal(CPUState *env, int sig, target_siginfo_t *info) |
421 | 31e31b8a | bellard | { |
422 | 624f7979 | pbrook | TaskState *ts = env->opaque; |
423 | 624f7979 | pbrook | struct emulated_sigtable *k;
|
424 | 9de5e440 | bellard | struct sigqueue *q, **pq;
|
425 | 992f48a0 | blueswir1 | abi_ulong handler; |
426 | ca587a8e | aurel32 | int queue;
|
427 | 66fb9763 | bellard | |
428 | 9de5e440 | bellard | #if defined(DEBUG_SIGNAL)
|
429 | 5fafdf24 | ths | fprintf(stderr, "queue_signal: sig=%d\n",
|
430 | 9de5e440 | bellard | sig); |
431 | 66fb9763 | bellard | #endif
|
432 | 624f7979 | pbrook | k = &ts->sigtab[sig - 1];
|
433 | ca587a8e | aurel32 | queue = gdb_queuesig (); |
434 | 624f7979 | pbrook | handler = sigact_table[sig - 1]._sa_handler;
|
435 | ca587a8e | aurel32 | if (!queue && handler == TARGET_SIG_DFL) {
|
436 | 60b19691 | ths | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
|
437 | 60b19691 | ths | kill(getpid(),SIGSTOP); |
438 | 60b19691 | ths | return 0; |
439 | 60b19691 | ths | } else
|
440 | 66fb9763 | bellard | /* default handler : ignore some signal. The other are fatal */
|
441 | 5fafdf24 | ths | if (sig != TARGET_SIGCHLD &&
|
442 | 5fafdf24 | ths | sig != TARGET_SIGURG && |
443 | 60b19691 | ths | sig != TARGET_SIGWINCH && |
444 | 60b19691 | ths | sig != TARGET_SIGCONT) { |
445 | 66fb9763 | bellard | force_sig(sig); |
446 | 9de5e440 | bellard | } else {
|
447 | 9de5e440 | bellard | return 0; /* indicate ignored */ |
448 | 66fb9763 | bellard | } |
449 | ca587a8e | aurel32 | } else if (!queue && handler == TARGET_SIG_IGN) { |
450 | 66fb9763 | bellard | /* ignore signal */
|
451 | 9de5e440 | bellard | return 0; |
452 | ca587a8e | aurel32 | } else if (!queue && handler == TARGET_SIG_ERR) { |
453 | 66fb9763 | bellard | force_sig(sig); |
454 | 66fb9763 | bellard | } else {
|
455 | 9de5e440 | bellard | pq = &k->first; |
456 | 9de5e440 | bellard | if (sig < TARGET_SIGRTMIN) {
|
457 | 9de5e440 | bellard | /* if non real time signal, we queue exactly one signal */
|
458 | 9de5e440 | bellard | if (!k->pending)
|
459 | 9de5e440 | bellard | q = &k->info; |
460 | 9de5e440 | bellard | else
|
461 | 9de5e440 | bellard | return 0; |
462 | 9de5e440 | bellard | } else {
|
463 | 9de5e440 | bellard | if (!k->pending) {
|
464 | 9de5e440 | bellard | /* first signal */
|
465 | 9de5e440 | bellard | q = &k->info; |
466 | 9de5e440 | bellard | } else {
|
467 | 624f7979 | pbrook | q = alloc_sigqueue(env); |
468 | 9de5e440 | bellard | if (!q)
|
469 | 9de5e440 | bellard | return -EAGAIN;
|
470 | 9de5e440 | bellard | while (*pq != NULL) |
471 | 9de5e440 | bellard | pq = &(*pq)->next; |
472 | 9de5e440 | bellard | } |
473 | 9de5e440 | bellard | } |
474 | 9de5e440 | bellard | *pq = q; |
475 | 9de5e440 | bellard | q->info = *info; |
476 | 9de5e440 | bellard | q->next = NULL;
|
477 | 9de5e440 | bellard | k->pending = 1;
|
478 | 9de5e440 | bellard | /* signal that a new signal is pending */
|
479 | 624f7979 | pbrook | ts->signal_pending = 1;
|
480 | 9de5e440 | bellard | return 1; /* indicates that the signal was queued */ |
481 | 9de5e440 | bellard | } |
482 | 9de5e440 | bellard | } |
483 | 9de5e440 | bellard | |
484 | 5fafdf24 | ths | static void host_signal_handler(int host_signum, siginfo_t *info, |
485 | 9de5e440 | bellard | void *puc)
|
486 | 9de5e440 | bellard | { |
487 | 9de5e440 | bellard | int sig;
|
488 | c227f099 | Anthony Liguori | target_siginfo_t tinfo; |
489 | 9de5e440 | bellard | |
490 | 9de5e440 | bellard | /* the CPU emulator uses some host signals to detect exceptions,
|
491 | eaa449b9 | aurel32 | we forward to it some signals */
|
492 | ca587a8e | aurel32 | if ((host_signum == SIGSEGV || host_signum == SIGBUS)
|
493 | eaa449b9 | aurel32 | && info->si_code > 0) {
|
494 | b346ff46 | bellard | if (cpu_signal_handler(host_signum, info, puc))
|
495 | 9de5e440 | bellard | return;
|
496 | 9de5e440 | bellard | } |
497 | 9de5e440 | bellard | |
498 | 9de5e440 | bellard | /* get target signal number */
|
499 | 9de5e440 | bellard | sig = host_to_target_signal(host_signum); |
500 | 9de5e440 | bellard | if (sig < 1 || sig > TARGET_NSIG) |
501 | 9de5e440 | bellard | return;
|
502 | 9de5e440 | bellard | #if defined(DEBUG_SIGNAL)
|
503 | bc8a22cc | bellard | fprintf(stderr, "qemu: got signal %d\n", sig);
|
504 | 9de5e440 | bellard | #endif
|
505 | 9de5e440 | bellard | host_to_target_siginfo_noswap(&tinfo, info); |
506 | d5975363 | pbrook | if (queue_signal(thread_env, sig, &tinfo) == 1) { |
507 | 9de5e440 | bellard | /* interrupt the virtual CPU as soon as possible */
|
508 | 3098dba0 | aurel32 | cpu_exit(thread_env); |
509 | 66fb9763 | bellard | } |
510 | 66fb9763 | bellard | } |
511 | 66fb9763 | bellard | |
512 | 0da46a6e | ths | /* do_sigaltstack() returns target values and errnos. */
|
513 | 579a97f7 | bellard | /* compare linux/kernel/signal.c:do_sigaltstack() */
|
514 | 579a97f7 | bellard | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) |
515 | a04e134a | ths | { |
516 | a04e134a | ths | int ret;
|
517 | a04e134a | ths | struct target_sigaltstack oss;
|
518 | a04e134a | ths | |
519 | a04e134a | ths | /* XXX: test errors */
|
520 | 579a97f7 | bellard | if(uoss_addr)
|
521 | a04e134a | ths | { |
522 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); |
523 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); |
524 | a04e134a | ths | __put_user(sas_ss_flags(sp), &oss.ss_flags); |
525 | a04e134a | ths | } |
526 | a04e134a | ths | |
527 | 579a97f7 | bellard | if(uss_addr)
|
528 | a04e134a | ths | { |
529 | 579a97f7 | bellard | struct target_sigaltstack *uss;
|
530 | 579a97f7 | bellard | struct target_sigaltstack ss;
|
531 | a04e134a | ths | |
532 | 0da46a6e | ths | ret = -TARGET_EFAULT; |
533 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1) |
534 | a04e134a | ths | || __get_user(ss.ss_sp, &uss->ss_sp) |
535 | a04e134a | ths | || __get_user(ss.ss_size, &uss->ss_size) |
536 | a04e134a | ths | || __get_user(ss.ss_flags, &uss->ss_flags)) |
537 | a04e134a | ths | goto out;
|
538 | 579a97f7 | bellard | unlock_user_struct(uss, uss_addr, 0);
|
539 | a04e134a | ths | |
540 | 0da46a6e | ths | ret = -TARGET_EPERM; |
541 | a04e134a | ths | if (on_sig_stack(sp))
|
542 | a04e134a | ths | goto out;
|
543 | a04e134a | ths | |
544 | 0da46a6e | ths | ret = -TARGET_EINVAL; |
545 | a04e134a | ths | if (ss.ss_flags != TARGET_SS_DISABLE
|
546 | a04e134a | ths | && ss.ss_flags != TARGET_SS_ONSTACK |
547 | a04e134a | ths | && ss.ss_flags != 0)
|
548 | a04e134a | ths | goto out;
|
549 | a04e134a | ths | |
550 | a04e134a | ths | if (ss.ss_flags == TARGET_SS_DISABLE) {
|
551 | a04e134a | ths | ss.ss_size = 0;
|
552 | a04e134a | ths | ss.ss_sp = 0;
|
553 | a04e134a | ths | } else {
|
554 | 0da46a6e | ths | ret = -TARGET_ENOMEM; |
555 | a04e134a | ths | if (ss.ss_size < MINSIGSTKSZ)
|
556 | a04e134a | ths | goto out;
|
557 | a04e134a | ths | } |
558 | a04e134a | ths | |
559 | a04e134a | ths | target_sigaltstack_used.ss_sp = ss.ss_sp; |
560 | a04e134a | ths | target_sigaltstack_used.ss_size = ss.ss_size; |
561 | a04e134a | ths | } |
562 | a04e134a | ths | |
563 | 579a97f7 | bellard | if (uoss_addr) {
|
564 | 0da46a6e | ths | ret = -TARGET_EFAULT; |
565 | 579a97f7 | bellard | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
566 | a04e134a | ths | goto out;
|
567 | a04e134a | ths | } |
568 | a04e134a | ths | |
569 | a04e134a | ths | ret = 0;
|
570 | a04e134a | ths | out:
|
571 | a04e134a | ths | return ret;
|
572 | a04e134a | ths | } |
573 | a04e134a | ths | |
574 | 0da46a6e | ths | /* do_sigaction() return host values and errnos */
|
575 | 66fb9763 | bellard | int do_sigaction(int sig, const struct target_sigaction *act, |
576 | 66fb9763 | bellard | struct target_sigaction *oact)
|
577 | 66fb9763 | bellard | { |
578 | 624f7979 | pbrook | struct target_sigaction *k;
|
579 | 773b93ee | bellard | struct sigaction act1;
|
580 | 773b93ee | bellard | int host_sig;
|
581 | 0da46a6e | ths | int ret = 0; |
582 | 66fb9763 | bellard | |
583 | 2a913eb1 | ths | if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP) |
584 | 66fb9763 | bellard | return -EINVAL;
|
585 | 66fb9763 | bellard | k = &sigact_table[sig - 1];
|
586 | 773b93ee | bellard | #if defined(DEBUG_SIGNAL)
|
587 | 0bf9e31a | Blue Swirl | fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n",
|
588 | 0bf9e31a | Blue Swirl | sig, act, oact); |
589 | 66fb9763 | bellard | #endif
|
590 | 66fb9763 | bellard | if (oact) {
|
591 | 624f7979 | pbrook | oact->_sa_handler = tswapl(k->_sa_handler); |
592 | 624f7979 | pbrook | oact->sa_flags = tswapl(k->sa_flags); |
593 | 388bb21a | ths | #if !defined(TARGET_MIPS)
|
594 | 624f7979 | pbrook | oact->sa_restorer = tswapl(k->sa_restorer); |
595 | 388bb21a | ths | #endif
|
596 | 624f7979 | pbrook | oact->sa_mask = k->sa_mask; |
597 | 66fb9763 | bellard | } |
598 | 66fb9763 | bellard | if (act) {
|
599 | 624f7979 | pbrook | /* FIXME: This is not threadsafe. */
|
600 | 624f7979 | pbrook | k->_sa_handler = tswapl(act->_sa_handler); |
601 | 624f7979 | pbrook | k->sa_flags = tswapl(act->sa_flags); |
602 | 388bb21a | ths | #if !defined(TARGET_MIPS)
|
603 | 624f7979 | pbrook | k->sa_restorer = tswapl(act->sa_restorer); |
604 | 388bb21a | ths | #endif
|
605 | 624f7979 | pbrook | k->sa_mask = act->sa_mask; |
606 | 773b93ee | bellard | |
607 | 773b93ee | bellard | /* we update the host linux signal state */
|
608 | 773b93ee | bellard | host_sig = target_to_host_signal(sig); |
609 | 773b93ee | bellard | if (host_sig != SIGSEGV && host_sig != SIGBUS) {
|
610 | 773b93ee | bellard | sigfillset(&act1.sa_mask); |
611 | 773b93ee | bellard | act1.sa_flags = SA_SIGINFO; |
612 | 624f7979 | pbrook | if (k->sa_flags & TARGET_SA_RESTART)
|
613 | 773b93ee | bellard | act1.sa_flags |= SA_RESTART; |
614 | 773b93ee | bellard | /* NOTE: it is important to update the host kernel signal
|
615 | 773b93ee | bellard | ignore state to avoid getting unexpected interrupted
|
616 | 773b93ee | bellard | syscalls */
|
617 | 624f7979 | pbrook | if (k->_sa_handler == TARGET_SIG_IGN) {
|
618 | 773b93ee | bellard | act1.sa_sigaction = (void *)SIG_IGN;
|
619 | 624f7979 | pbrook | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
620 | ca587a8e | aurel32 | if (fatal_signal (sig))
|
621 | ca587a8e | aurel32 | act1.sa_sigaction = host_signal_handler; |
622 | ca587a8e | aurel32 | else
|
623 | ca587a8e | aurel32 | act1.sa_sigaction = (void *)SIG_DFL;
|
624 | 773b93ee | bellard | } else {
|
625 | 773b93ee | bellard | act1.sa_sigaction = host_signal_handler; |
626 | 773b93ee | bellard | } |
627 | 0da46a6e | ths | ret = sigaction(host_sig, &act1, NULL);
|
628 | 773b93ee | bellard | } |
629 | 66fb9763 | bellard | } |
630 | 0da46a6e | ths | return ret;
|
631 | 66fb9763 | bellard | } |
632 | 66fb9763 | bellard | |
633 | c227f099 | Anthony Liguori | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
634 | c227f099 | Anthony Liguori | const target_siginfo_t *info)
|
635 | 43fff238 | bellard | { |
636 | 43fff238 | bellard | tswap_siginfo(tinfo, info); |
637 | 43fff238 | bellard | return 0; |
638 | 43fff238 | bellard | } |
639 | 43fff238 | bellard | |
640 | c3b5bc8a | ths | static inline int current_exec_domain_sig(int sig) |
641 | c3b5bc8a | ths | { |
642 | c3b5bc8a | ths | return /* current->exec_domain && current->exec_domain->signal_invmap |
643 | c3b5bc8a | ths | && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig;
|
644 | c3b5bc8a | ths | } |
645 | c3b5bc8a | ths | |
646 | 459a4017 | bellard | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
647 | 66fb9763 | bellard | |
648 | 66fb9763 | bellard | /* from the Linux kernel */
|
649 | 66fb9763 | bellard | |
650 | 66fb9763 | bellard | struct target_fpreg {
|
651 | 66fb9763 | bellard | uint16_t significand[4];
|
652 | 66fb9763 | bellard | uint16_t exponent; |
653 | 66fb9763 | bellard | }; |
654 | 66fb9763 | bellard | |
655 | 66fb9763 | bellard | struct target_fpxreg {
|
656 | 66fb9763 | bellard | uint16_t significand[4];
|
657 | 66fb9763 | bellard | uint16_t exponent; |
658 | 66fb9763 | bellard | uint16_t padding[3];
|
659 | 66fb9763 | bellard | }; |
660 | 66fb9763 | bellard | |
661 | 66fb9763 | bellard | struct target_xmmreg {
|
662 | 992f48a0 | blueswir1 | abi_ulong element[4];
|
663 | 66fb9763 | bellard | }; |
664 | 66fb9763 | bellard | |
665 | 66fb9763 | bellard | struct target_fpstate {
|
666 | 66fb9763 | bellard | /* Regular FPU environment */
|
667 | 992f48a0 | blueswir1 | abi_ulong cw; |
668 | 992f48a0 | blueswir1 | abi_ulong sw; |
669 | 992f48a0 | blueswir1 | abi_ulong tag; |
670 | 992f48a0 | blueswir1 | abi_ulong ipoff; |
671 | 992f48a0 | blueswir1 | abi_ulong cssel; |
672 | 992f48a0 | blueswir1 | abi_ulong dataoff; |
673 | 992f48a0 | blueswir1 | abi_ulong datasel; |
674 | 66fb9763 | bellard | struct target_fpreg _st[8]; |
675 | 66fb9763 | bellard | uint16_t status; |
676 | 66fb9763 | bellard | uint16_t magic; /* 0xffff = regular FPU data only */
|
677 | 66fb9763 | bellard | |
678 | 66fb9763 | bellard | /* FXSR FPU environment */
|
679 | 992f48a0 | blueswir1 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
680 | 992f48a0 | blueswir1 | abi_ulong mxcsr; |
681 | 992f48a0 | blueswir1 | abi_ulong reserved; |
682 | 66fb9763 | bellard | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
683 | 66fb9763 | bellard | struct target_xmmreg _xmm[8]; |
684 | 992f48a0 | blueswir1 | abi_ulong padding[56];
|
685 | 66fb9763 | bellard | }; |
686 | 66fb9763 | bellard | |
687 | 66fb9763 | bellard | #define X86_FXSR_MAGIC 0x0000 |
688 | 66fb9763 | bellard | |
689 | 66fb9763 | bellard | struct target_sigcontext {
|
690 | 66fb9763 | bellard | uint16_t gs, __gsh; |
691 | 66fb9763 | bellard | uint16_t fs, __fsh; |
692 | 66fb9763 | bellard | uint16_t es, __esh; |
693 | 66fb9763 | bellard | uint16_t ds, __dsh; |
694 | 992f48a0 | blueswir1 | abi_ulong edi; |
695 | 992f48a0 | blueswir1 | abi_ulong esi; |
696 | 992f48a0 | blueswir1 | abi_ulong ebp; |
697 | 992f48a0 | blueswir1 | abi_ulong esp; |
698 | 992f48a0 | blueswir1 | abi_ulong ebx; |
699 | 992f48a0 | blueswir1 | abi_ulong edx; |
700 | 992f48a0 | blueswir1 | abi_ulong ecx; |
701 | 992f48a0 | blueswir1 | abi_ulong eax; |
702 | 992f48a0 | blueswir1 | abi_ulong trapno; |
703 | 992f48a0 | blueswir1 | abi_ulong err; |
704 | 992f48a0 | blueswir1 | abi_ulong eip; |
705 | 66fb9763 | bellard | uint16_t cs, __csh; |
706 | 992f48a0 | blueswir1 | abi_ulong eflags; |
707 | 992f48a0 | blueswir1 | abi_ulong esp_at_signal; |
708 | 66fb9763 | bellard | uint16_t ss, __ssh; |
709 | 992f48a0 | blueswir1 | abi_ulong fpstate; /* pointer */
|
710 | 992f48a0 | blueswir1 | abi_ulong oldmask; |
711 | 992f48a0 | blueswir1 | abi_ulong cr2; |
712 | 66fb9763 | bellard | }; |
713 | 66fb9763 | bellard | |
714 | 66fb9763 | bellard | struct target_ucontext {
|
715 | 992f48a0 | blueswir1 | abi_ulong tuc_flags; |
716 | 992f48a0 | blueswir1 | abi_ulong tuc_link; |
717 | c227f099 | Anthony Liguori | target_stack_t tuc_stack; |
718 | b8076a74 | bellard | struct target_sigcontext tuc_mcontext;
|
719 | c227f099 | Anthony Liguori | target_sigset_t tuc_sigmask; /* mask last for extensibility */
|
720 | 66fb9763 | bellard | }; |
721 | 66fb9763 | bellard | |
722 | 66fb9763 | bellard | struct sigframe
|
723 | 66fb9763 | bellard | { |
724 | 992f48a0 | blueswir1 | abi_ulong pretcode; |
725 | 66fb9763 | bellard | int sig;
|
726 | 66fb9763 | bellard | struct target_sigcontext sc;
|
727 | 66fb9763 | bellard | struct target_fpstate fpstate;
|
728 | 992f48a0 | blueswir1 | abi_ulong extramask[TARGET_NSIG_WORDS-1];
|
729 | 66fb9763 | bellard | char retcode[8]; |
730 | 66fb9763 | bellard | }; |
731 | 66fb9763 | bellard | |
732 | 66fb9763 | bellard | struct rt_sigframe
|
733 | 66fb9763 | bellard | { |
734 | 992f48a0 | blueswir1 | abi_ulong pretcode; |
735 | 66fb9763 | bellard | int sig;
|
736 | 992f48a0 | blueswir1 | abi_ulong pinfo; |
737 | 992f48a0 | blueswir1 | abi_ulong puc; |
738 | 66fb9763 | bellard | struct target_siginfo info;
|
739 | 66fb9763 | bellard | struct target_ucontext uc;
|
740 | 66fb9763 | bellard | struct target_fpstate fpstate;
|
741 | 66fb9763 | bellard | char retcode[8]; |
742 | 66fb9763 | bellard | }; |
743 | 66fb9763 | bellard | |
744 | 66fb9763 | bellard | /*
|
745 | 66fb9763 | bellard | * Set up a signal frame.
|
746 | 66fb9763 | bellard | */
|
747 | 66fb9763 | bellard | |
748 | 66fb9763 | bellard | /* XXX: save x87 state */
|
749 | 66fb9763 | bellard | static int |
750 | 66fb9763 | bellard | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, |
751 | 28be6234 | bellard | CPUX86State *env, abi_ulong mask, abi_ulong fpstate_addr) |
752 | 66fb9763 | bellard | { |
753 | 66fb9763 | bellard | int err = 0; |
754 | 775b58d8 | bellard | uint16_t magic; |
755 | 66fb9763 | bellard | |
756 | 579a97f7 | bellard | /* already locked in setup_frame() */
|
757 | a52c757c | bellard | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
758 | a52c757c | bellard | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); |
759 | a52c757c | bellard | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); |
760 | a52c757c | bellard | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); |
761 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EDI], &sc->edi); |
762 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESI], &sc->esi); |
763 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EBP], &sc->ebp); |
764 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESP], &sc->esp); |
765 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EBX], &sc->ebx); |
766 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EDX], &sc->edx); |
767 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ECX], &sc->ecx); |
768 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EAX], &sc->eax); |
769 | 66099dd9 | bellard | err |= __put_user(env->exception_index, &sc->trapno); |
770 | 66099dd9 | bellard | err |= __put_user(env->error_code, &sc->err); |
771 | 66fb9763 | bellard | err |= __put_user(env->eip, &sc->eip); |
772 | a52c757c | bellard | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
773 | 66fb9763 | bellard | err |= __put_user(env->eflags, &sc->eflags); |
774 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); |
775 | a52c757c | bellard | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
776 | ed2dcdf6 | bellard | |
777 | 28be6234 | bellard | cpu_x86_fsave(env, fpstate_addr, 1);
|
778 | ed2dcdf6 | bellard | fpstate->status = fpstate->sw; |
779 | 775b58d8 | bellard | magic = 0xffff;
|
780 | 775b58d8 | bellard | err |= __put_user(magic, &fpstate->magic); |
781 | 28be6234 | bellard | err |= __put_user(fpstate_addr, &sc->fpstate); |
782 | ed2dcdf6 | bellard | |
783 | 66fb9763 | bellard | /* non-iBCS2 extensions.. */
|
784 | 66fb9763 | bellard | err |= __put_user(mask, &sc->oldmask); |
785 | a52c757c | bellard | err |= __put_user(env->cr[2], &sc->cr2);
|
786 | 66fb9763 | bellard | return err;
|
787 | 31e31b8a | bellard | } |
788 | 31e31b8a | bellard | |
789 | 66fb9763 | bellard | /*
|
790 | 66fb9763 | bellard | * Determine which stack to use..
|
791 | 66fb9763 | bellard | */
|
792 | 31e31b8a | bellard | |
793 | 579a97f7 | bellard | static inline abi_ulong |
794 | 624f7979 | pbrook | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
|
795 | 31e31b8a | bellard | { |
796 | 66fb9763 | bellard | unsigned long esp; |
797 | 66fb9763 | bellard | |
798 | 66fb9763 | bellard | /* Default to using normal stack */
|
799 | 66fb9763 | bellard | esp = env->regs[R_ESP]; |
800 | 66fb9763 | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
801 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_ONSTACK) {
|
802 | a04e134a | ths | if (sas_ss_flags(esp) == 0) |
803 | a04e134a | ths | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
804 | a04e134a | ths | } |
805 | 66fb9763 | bellard | |
806 | 66fb9763 | bellard | /* This is the legacy signal stack switching. */
|
807 | 5fafdf24 | ths | else
|
808 | a52c757c | bellard | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
809 | 624f7979 | pbrook | !(ka->sa_flags & TARGET_SA_RESTORER) && |
810 | 624f7979 | pbrook | ka->sa_restorer) { |
811 | 624f7979 | pbrook | esp = (unsigned long) ka->sa_restorer; |
812 | a52c757c | bellard | } |
813 | 579a97f7 | bellard | return (esp - frame_size) & -8ul; |
814 | 66fb9763 | bellard | } |
815 | 66fb9763 | bellard | |
816 | 579a97f7 | bellard | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */
|
817 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
818 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUX86State *env) |
819 | 66fb9763 | bellard | { |
820 | 579a97f7 | bellard | abi_ulong frame_addr; |
821 | 66fb9763 | bellard | struct sigframe *frame;
|
822 | 9231944d | bellard | int i, err = 0; |
823 | 66fb9763 | bellard | |
824 | 579a97f7 | bellard | frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
825 | 66fb9763 | bellard | |
826 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
827 | 66fb9763 | bellard | goto give_sigsegv;
|
828 | 579a97f7 | bellard | |
829 | c3b5bc8a | ths | err |= __put_user(current_exec_domain_sig(sig), |
830 | 66fb9763 | bellard | &frame->sig); |
831 | 66fb9763 | bellard | if (err)
|
832 | 66fb9763 | bellard | goto give_sigsegv;
|
833 | 66fb9763 | bellard | |
834 | 28be6234 | bellard | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
|
835 | 28be6234 | bellard | frame_addr + offsetof(struct sigframe, fpstate));
|
836 | 66fb9763 | bellard | if (err)
|
837 | 66fb9763 | bellard | goto give_sigsegv;
|
838 | 66fb9763 | bellard | |
839 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
840 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
841 | 9231944d | bellard | goto give_sigsegv;
|
842 | 9231944d | bellard | } |
843 | 66fb9763 | bellard | |
844 | 66fb9763 | bellard | /* Set up to return from userspace. If provided, use a stub
|
845 | 66fb9763 | bellard | already in userspace. */
|
846 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_RESTORER) {
|
847 | 624f7979 | pbrook | err |= __put_user(ka->sa_restorer, &frame->pretcode); |
848 | 66fb9763 | bellard | } else {
|
849 | 775b58d8 | bellard | uint16_t val16; |
850 | 28be6234 | bellard | abi_ulong retcode_addr; |
851 | 28be6234 | bellard | retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
|
852 | 28be6234 | bellard | err |= __put_user(retcode_addr, &frame->pretcode); |
853 | 66fb9763 | bellard | /* This is popl %eax ; movl $,%eax ; int $0x80 */
|
854 | 775b58d8 | bellard | val16 = 0xb858;
|
855 | 775b58d8 | bellard | err |= __put_user(val16, (uint16_t *)(frame->retcode+0));
|
856 | 66fb9763 | bellard | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
857 | 775b58d8 | bellard | val16 = 0x80cd;
|
858 | 775b58d8 | bellard | err |= __put_user(val16, (uint16_t *)(frame->retcode+6));
|
859 | 66fb9763 | bellard | } |
860 | 66fb9763 | bellard | |
861 | 66fb9763 | bellard | if (err)
|
862 | 66fb9763 | bellard | goto give_sigsegv;
|
863 | 66fb9763 | bellard | |
864 | 66fb9763 | bellard | /* Set up registers for signal handler */
|
865 | 28be6234 | bellard | env->regs[R_ESP] = frame_addr; |
866 | 624f7979 | pbrook | env->eip = ka->_sa_handler; |
867 | 66fb9763 | bellard | |
868 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, __USER_DS); |
869 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, __USER_DS); |
870 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, __USER_DS); |
871 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, __USER_CS); |
872 | 66fb9763 | bellard | env->eflags &= ~TF_MASK; |
873 | 66fb9763 | bellard | |
874 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
875 | 579a97f7 | bellard | |
876 | 66fb9763 | bellard | return;
|
877 | 66fb9763 | bellard | |
878 | 66fb9763 | bellard | give_sigsegv:
|
879 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
880 | 66fb9763 | bellard | if (sig == TARGET_SIGSEGV)
|
881 | 624f7979 | pbrook | ka->_sa_handler = TARGET_SIG_DFL; |
882 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV /* , current */);
|
883 | 66fb9763 | bellard | } |
884 | 66fb9763 | bellard | |
885 | 579a97f7 | bellard | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
|
886 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
887 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
888 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUX86State *env) |
889 | 66fb9763 | bellard | { |
890 | 28be6234 | bellard | abi_ulong frame_addr, addr; |
891 | 66fb9763 | bellard | struct rt_sigframe *frame;
|
892 | 9231944d | bellard | int i, err = 0; |
893 | 66fb9763 | bellard | |
894 | 579a97f7 | bellard | frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
895 | 66fb9763 | bellard | |
896 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
897 | 66fb9763 | bellard | goto give_sigsegv;
|
898 | 66fb9763 | bellard | |
899 | c3b5bc8a | ths | err |= __put_user(current_exec_domain_sig(sig), |
900 | 66fb9763 | bellard | &frame->sig); |
901 | 28be6234 | bellard | addr = frame_addr + offsetof(struct rt_sigframe, info);
|
902 | 28be6234 | bellard | err |= __put_user(addr, &frame->pinfo); |
903 | 28be6234 | bellard | addr = frame_addr + offsetof(struct rt_sigframe, uc);
|
904 | 28be6234 | bellard | err |= __put_user(addr, &frame->puc); |
905 | 66fb9763 | bellard | err |= copy_siginfo_to_user(&frame->info, info); |
906 | 66fb9763 | bellard | if (err)
|
907 | 66fb9763 | bellard | goto give_sigsegv;
|
908 | 31e31b8a | bellard | |
909 | 66fb9763 | bellard | /* Create the ucontext. */
|
910 | b8076a74 | bellard | err |= __put_user(0, &frame->uc.tuc_flags);
|
911 | b8076a74 | bellard | err |= __put_user(0, &frame->uc.tuc_link);
|
912 | a04e134a | ths | err |= __put_user(target_sigaltstack_used.ss_sp, |
913 | b8076a74 | bellard | &frame->uc.tuc_stack.ss_sp); |
914 | a04e134a | ths | err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
915 | b8076a74 | bellard | &frame->uc.tuc_stack.ss_flags); |
916 | a04e134a | ths | err |= __put_user(target_sigaltstack_used.ss_size, |
917 | b8076a74 | bellard | &frame->uc.tuc_stack.ss_size); |
918 | b8076a74 | bellard | err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, |
919 | 28be6234 | bellard | env, set->sig[0],
|
920 | 28be6234 | bellard | frame_addr + offsetof(struct rt_sigframe, fpstate));
|
921 | 9231944d | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
922 | b8076a74 | bellard | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
|
923 | 9231944d | bellard | goto give_sigsegv;
|
924 | 9231944d | bellard | } |
925 | 31e31b8a | bellard | |
926 | 66fb9763 | bellard | /* Set up to return from userspace. If provided, use a stub
|
927 | 66fb9763 | bellard | already in userspace. */
|
928 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_RESTORER) {
|
929 | 624f7979 | pbrook | err |= __put_user(ka->sa_restorer, &frame->pretcode); |
930 | 66fb9763 | bellard | } else {
|
931 | 775b58d8 | bellard | uint16_t val16; |
932 | 28be6234 | bellard | addr = frame_addr + offsetof(struct rt_sigframe, retcode);
|
933 | 28be6234 | bellard | err |= __put_user(addr, &frame->pretcode); |
934 | 66fb9763 | bellard | /* This is movl $,%eax ; int $0x80 */
|
935 | 775b58d8 | bellard | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
936 | 66fb9763 | bellard | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
937 | 775b58d8 | bellard | val16 = 0x80cd;
|
938 | 775b58d8 | bellard | err |= __put_user(val16, (uint16_t *)(frame->retcode+5));
|
939 | 66fb9763 | bellard | } |
940 | 66fb9763 | bellard | |
941 | 66fb9763 | bellard | if (err)
|
942 | 66fb9763 | bellard | goto give_sigsegv;
|
943 | 66fb9763 | bellard | |
944 | 66fb9763 | bellard | /* Set up registers for signal handler */
|
945 | 28be6234 | bellard | env->regs[R_ESP] = frame_addr; |
946 | 624f7979 | pbrook | env->eip = ka->_sa_handler; |
947 | 66fb9763 | bellard | |
948 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, __USER_DS); |
949 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, __USER_DS); |
950 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, __USER_DS); |
951 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, __USER_CS); |
952 | 66fb9763 | bellard | env->eflags &= ~TF_MASK; |
953 | 66fb9763 | bellard | |
954 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
955 | 579a97f7 | bellard | |
956 | 66fb9763 | bellard | return;
|
957 | 66fb9763 | bellard | |
958 | 66fb9763 | bellard | give_sigsegv:
|
959 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
960 | 66fb9763 | bellard | if (sig == TARGET_SIGSEGV)
|
961 | 624f7979 | pbrook | ka->_sa_handler = TARGET_SIG_DFL; |
962 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV /* , current */);
|
963 | 66fb9763 | bellard | } |
964 | 66fb9763 | bellard | |
965 | 66fb9763 | bellard | static int |
966 | 66fb9763 | bellard | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) |
967 | 66fb9763 | bellard | { |
968 | 66fb9763 | bellard | unsigned int err = 0; |
969 | 28be6234 | bellard | abi_ulong fpstate_addr; |
970 | 28be6234 | bellard | unsigned int tmpflags; |
971 | 28be6234 | bellard | |
972 | 28be6234 | bellard | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); |
973 | 28be6234 | bellard | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); |
974 | 28be6234 | bellard | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); |
975 | 28be6234 | bellard | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); |
976 | 28be6234 | bellard | |
977 | 28be6234 | bellard | env->regs[R_EDI] = tswapl(sc->edi); |
978 | 28be6234 | bellard | env->regs[R_ESI] = tswapl(sc->esi); |
979 | 28be6234 | bellard | env->regs[R_EBP] = tswapl(sc->ebp); |
980 | 28be6234 | bellard | env->regs[R_ESP] = tswapl(sc->esp); |
981 | 28be6234 | bellard | env->regs[R_EBX] = tswapl(sc->ebx); |
982 | 28be6234 | bellard | env->regs[R_EDX] = tswapl(sc->edx); |
983 | 28be6234 | bellard | env->regs[R_ECX] = tswapl(sc->ecx); |
984 | 28be6234 | bellard | env->eip = tswapl(sc->eip); |
985 | 66fb9763 | bellard | |
986 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, lduw(&sc->cs) | 3);
|
987 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, lduw(&sc->ss) | 3);
|
988 | 5fafdf24 | ths | |
989 | 28be6234 | bellard | tmpflags = tswapl(sc->eflags); |
990 | 28be6234 | bellard | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); |
991 | 28be6234 | bellard | // regs->orig_eax = -1; /* disable syscall checks */
|
992 | 66fb9763 | bellard | |
993 | 28be6234 | bellard | fpstate_addr = tswapl(sc->fpstate); |
994 | 28be6234 | bellard | if (fpstate_addr != 0) { |
995 | 28be6234 | bellard | if (!access_ok(VERIFY_READ, fpstate_addr,
|
996 | 28be6234 | bellard | sizeof(struct target_fpstate))) |
997 | 28be6234 | bellard | goto badframe;
|
998 | 28be6234 | bellard | cpu_x86_frstor(env, fpstate_addr, 1);
|
999 | 66fb9763 | bellard | } |
1000 | ed2dcdf6 | bellard | |
1001 | 28be6234 | bellard | *peax = tswapl(sc->eax); |
1002 | 66fb9763 | bellard | return err;
|
1003 | 66fb9763 | bellard | badframe:
|
1004 | 66fb9763 | bellard | return 1; |
1005 | 66fb9763 | bellard | } |
1006 | 66fb9763 | bellard | |
1007 | 66fb9763 | bellard | long do_sigreturn(CPUX86State *env)
|
1008 | 66fb9763 | bellard | { |
1009 | 579a97f7 | bellard | struct sigframe *frame;
|
1010 | 579a97f7 | bellard | abi_ulong frame_addr = env->regs[R_ESP] - 8;
|
1011 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
1012 | 66fb9763 | bellard | sigset_t set; |
1013 | 66fb9763 | bellard | int eax, i;
|
1014 | 66fb9763 | bellard | |
1015 | 447db213 | bellard | #if defined(DEBUG_SIGNAL)
|
1016 | 447db213 | bellard | fprintf(stderr, "do_sigreturn\n");
|
1017 | 447db213 | bellard | #endif
|
1018 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1019 | 579a97f7 | bellard | goto badframe;
|
1020 | 66fb9763 | bellard | /* set blocked signals */
|
1021 | 9231944d | bellard | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
1022 | 9231944d | bellard | goto badframe;
|
1023 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1024 | 9231944d | bellard | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) |
1025 | 9231944d | bellard | goto badframe;
|
1026 | 9231944d | bellard | } |
1027 | 66fb9763 | bellard | |
1028 | 9231944d | bellard | target_to_host_sigset_internal(&set, &target_set); |
1029 | 66fb9763 | bellard | sigprocmask(SIG_SETMASK, &set, NULL);
|
1030 | 3b46e624 | ths | |
1031 | 66fb9763 | bellard | /* restore registers */
|
1032 | 66fb9763 | bellard | if (restore_sigcontext(env, &frame->sc, &eax))
|
1033 | 66fb9763 | bellard | goto badframe;
|
1034 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1035 | 66fb9763 | bellard | return eax;
|
1036 | 66fb9763 | bellard | |
1037 | 66fb9763 | bellard | badframe:
|
1038 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1039 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV); |
1040 | 66fb9763 | bellard | return 0; |
1041 | 66fb9763 | bellard | } |
1042 | 66fb9763 | bellard | |
1043 | 66fb9763 | bellard | long do_rt_sigreturn(CPUX86State *env)
|
1044 | 66fb9763 | bellard | { |
1045 | 28be6234 | bellard | abi_ulong frame_addr; |
1046 | 28be6234 | bellard | struct rt_sigframe *frame;
|
1047 | 66fb9763 | bellard | sigset_t set; |
1048 | 66fb9763 | bellard | int eax;
|
1049 | 66fb9763 | bellard | |
1050 | 28be6234 | bellard | frame_addr = env->regs[R_ESP] - 4;
|
1051 | 28be6234 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1052 | 28be6234 | bellard | goto badframe;
|
1053 | b8076a74 | bellard | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
1054 | 66fb9763 | bellard | sigprocmask(SIG_SETMASK, &set, NULL);
|
1055 | 5fafdf24 | ths | |
1056 | b8076a74 | bellard | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax))
|
1057 | 66fb9763 | bellard | goto badframe;
|
1058 | 66fb9763 | bellard | |
1059 | 28be6234 | bellard | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
1060 | 28be6234 | bellard | get_sp_from_cpustate(env)) == -EFAULT) |
1061 | 66fb9763 | bellard | goto badframe;
|
1062 | a04e134a | ths | |
1063 | 28be6234 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1064 | 66fb9763 | bellard | return eax;
|
1065 | 66fb9763 | bellard | |
1066 | 66fb9763 | bellard | badframe:
|
1067 | 28be6234 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1068 | 28be6234 | bellard | force_sig(TARGET_SIGSEGV); |
1069 | 66fb9763 | bellard | return 0; |
1070 | 66fb9763 | bellard | } |
1071 | 66fb9763 | bellard | |
1072 | 43fff238 | bellard | #elif defined(TARGET_ARM)
|
1073 | 43fff238 | bellard | |
1074 | 43fff238 | bellard | struct target_sigcontext {
|
1075 | 992f48a0 | blueswir1 | abi_ulong trap_no; |
1076 | 992f48a0 | blueswir1 | abi_ulong error_code; |
1077 | 992f48a0 | blueswir1 | abi_ulong oldmask; |
1078 | 992f48a0 | blueswir1 | abi_ulong arm_r0; |
1079 | 992f48a0 | blueswir1 | abi_ulong arm_r1; |
1080 | 992f48a0 | blueswir1 | abi_ulong arm_r2; |
1081 | 992f48a0 | blueswir1 | abi_ulong arm_r3; |
1082 | 992f48a0 | blueswir1 | abi_ulong arm_r4; |
1083 | 992f48a0 | blueswir1 | abi_ulong arm_r5; |
1084 | 992f48a0 | blueswir1 | abi_ulong arm_r6; |
1085 | 992f48a0 | blueswir1 | abi_ulong arm_r7; |
1086 | 992f48a0 | blueswir1 | abi_ulong arm_r8; |
1087 | 992f48a0 | blueswir1 | abi_ulong arm_r9; |
1088 | 992f48a0 | blueswir1 | abi_ulong arm_r10; |
1089 | 992f48a0 | blueswir1 | abi_ulong arm_fp; |
1090 | 992f48a0 | blueswir1 | abi_ulong arm_ip; |
1091 | 992f48a0 | blueswir1 | abi_ulong arm_sp; |
1092 | 992f48a0 | blueswir1 | abi_ulong arm_lr; |
1093 | 992f48a0 | blueswir1 | abi_ulong arm_pc; |
1094 | 992f48a0 | blueswir1 | abi_ulong arm_cpsr; |
1095 | 992f48a0 | blueswir1 | abi_ulong fault_address; |
1096 | 43fff238 | bellard | }; |
1097 | 43fff238 | bellard | |
1098 | a745ec6d | pbrook | struct target_ucontext_v1 {
|
1099 | a745ec6d | pbrook | abi_ulong tuc_flags; |
1100 | a745ec6d | pbrook | abi_ulong tuc_link; |
1101 | c227f099 | Anthony Liguori | target_stack_t tuc_stack; |
1102 | a745ec6d | pbrook | struct target_sigcontext tuc_mcontext;
|
1103 | c227f099 | Anthony Liguori | target_sigset_t tuc_sigmask; /* mask last for extensibility */
|
1104 | a745ec6d | pbrook | }; |
1105 | a745ec6d | pbrook | |
1106 | a745ec6d | pbrook | struct target_ucontext_v2 {
|
1107 | 992f48a0 | blueswir1 | abi_ulong tuc_flags; |
1108 | 992f48a0 | blueswir1 | abi_ulong tuc_link; |
1109 | c227f099 | Anthony Liguori | target_stack_t tuc_stack; |
1110 | b8076a74 | bellard | struct target_sigcontext tuc_mcontext;
|
1111 | c227f099 | Anthony Liguori | target_sigset_t tuc_sigmask; /* mask last for extensibility */
|
1112 | a745ec6d | pbrook | char __unused[128 - sizeof(sigset_t)]; |
1113 | a745ec6d | pbrook | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); |
1114 | 43fff238 | bellard | }; |
1115 | 43fff238 | bellard | |
1116 | a8c33204 | pbrook | struct sigframe_v1
|
1117 | 43fff238 | bellard | { |
1118 | 43fff238 | bellard | struct target_sigcontext sc;
|
1119 | 992f48a0 | blueswir1 | abi_ulong extramask[TARGET_NSIG_WORDS-1];
|
1120 | 992f48a0 | blueswir1 | abi_ulong retcode; |
1121 | 43fff238 | bellard | }; |
1122 | 43fff238 | bellard | |
1123 | a8c33204 | pbrook | struct sigframe_v2
|
1124 | a8c33204 | pbrook | { |
1125 | a8c33204 | pbrook | struct target_ucontext_v2 uc;
|
1126 | a8c33204 | pbrook | abi_ulong retcode; |
1127 | a8c33204 | pbrook | }; |
1128 | a8c33204 | pbrook | |
1129 | a745ec6d | pbrook | struct rt_sigframe_v1
|
1130 | 43fff238 | bellard | { |
1131 | f8b0aa25 | bellard | abi_ulong pinfo; |
1132 | f8b0aa25 | bellard | abi_ulong puc; |
1133 | 43fff238 | bellard | struct target_siginfo info;
|
1134 | a745ec6d | pbrook | struct target_ucontext_v1 uc;
|
1135 | a745ec6d | pbrook | abi_ulong retcode; |
1136 | a745ec6d | pbrook | }; |
1137 | a745ec6d | pbrook | |
1138 | a745ec6d | pbrook | struct rt_sigframe_v2
|
1139 | a745ec6d | pbrook | { |
1140 | a745ec6d | pbrook | struct target_siginfo info;
|
1141 | a745ec6d | pbrook | struct target_ucontext_v2 uc;
|
1142 | 992f48a0 | blueswir1 | abi_ulong retcode; |
1143 | 43fff238 | bellard | }; |
1144 | 43fff238 | bellard | |
1145 | 43fff238 | bellard | #define TARGET_CONFIG_CPU_32 1 |
1146 | 43fff238 | bellard | |
1147 | 43fff238 | bellard | /*
|
1148 | 43fff238 | bellard | * For ARM syscalls, we encode the syscall number into the instruction.
|
1149 | 43fff238 | bellard | */
|
1150 | 43fff238 | bellard | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) |
1151 | 43fff238 | bellard | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) |
1152 | 43fff238 | bellard | |
1153 | 43fff238 | bellard | /*
|
1154 | 43fff238 | bellard | * For Thumb syscalls, we pass the syscall number via r7. We therefore
|
1155 | 43fff238 | bellard | * need two 16-bit instructions.
|
1156 | 43fff238 | bellard | */
|
1157 | 43fff238 | bellard | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) |
1158 | 43fff238 | bellard | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) |
1159 | 43fff238 | bellard | |
1160 | 992f48a0 | blueswir1 | static const abi_ulong retcodes[4] = { |
1161 | 43fff238 | bellard | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1162 | 43fff238 | bellard | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN |
1163 | 43fff238 | bellard | }; |
1164 | 43fff238 | bellard | |
1165 | 43fff238 | bellard | |
1166 | 43fff238 | bellard | #define __get_user_error(x,p,e) __get_user(x, p)
|
1167 | 43fff238 | bellard | |
1168 | 43fff238 | bellard | static inline int valid_user_regs(CPUState *regs) |
1169 | 43fff238 | bellard | { |
1170 | 43fff238 | bellard | return 1; |
1171 | 43fff238 | bellard | } |
1172 | 43fff238 | bellard | |
1173 | a8c33204 | pbrook | static void |
1174 | 43fff238 | bellard | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
1175 | f8b0aa25 | bellard | CPUState *env, abi_ulong mask) |
1176 | 43fff238 | bellard | { |
1177 | a8c33204 | pbrook | __put_user(env->regs[0], &sc->arm_r0);
|
1178 | a8c33204 | pbrook | __put_user(env->regs[1], &sc->arm_r1);
|
1179 | a8c33204 | pbrook | __put_user(env->regs[2], &sc->arm_r2);
|
1180 | a8c33204 | pbrook | __put_user(env->regs[3], &sc->arm_r3);
|
1181 | a8c33204 | pbrook | __put_user(env->regs[4], &sc->arm_r4);
|
1182 | a8c33204 | pbrook | __put_user(env->regs[5], &sc->arm_r5);
|
1183 | a8c33204 | pbrook | __put_user(env->regs[6], &sc->arm_r6);
|
1184 | a8c33204 | pbrook | __put_user(env->regs[7], &sc->arm_r7);
|
1185 | a8c33204 | pbrook | __put_user(env->regs[8], &sc->arm_r8);
|
1186 | a8c33204 | pbrook | __put_user(env->regs[9], &sc->arm_r9);
|
1187 | a8c33204 | pbrook | __put_user(env->regs[10], &sc->arm_r10);
|
1188 | a8c33204 | pbrook | __put_user(env->regs[11], &sc->arm_fp);
|
1189 | a8c33204 | pbrook | __put_user(env->regs[12], &sc->arm_ip);
|
1190 | a8c33204 | pbrook | __put_user(env->regs[13], &sc->arm_sp);
|
1191 | a8c33204 | pbrook | __put_user(env->regs[14], &sc->arm_lr);
|
1192 | a8c33204 | pbrook | __put_user(env->regs[15], &sc->arm_pc);
|
1193 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1194 | a8c33204 | pbrook | __put_user(cpsr_read(env), &sc->arm_cpsr); |
1195 | 43fff238 | bellard | #endif
|
1196 | 43fff238 | bellard | |
1197 | a8c33204 | pbrook | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1198 | a8c33204 | pbrook | __put_user(/* current->thread.error_code */ 0, &sc->error_code); |
1199 | a8c33204 | pbrook | __put_user(/* current->thread.address */ 0, &sc->fault_address); |
1200 | a8c33204 | pbrook | __put_user(mask, &sc->oldmask); |
1201 | 43fff238 | bellard | } |
1202 | 43fff238 | bellard | |
1203 | 579a97f7 | bellard | static inline abi_ulong |
1204 | 624f7979 | pbrook | get_sigframe(struct target_sigaction *ka, CPUState *regs, int framesize) |
1205 | 43fff238 | bellard | { |
1206 | 43fff238 | bellard | unsigned long sp = regs->regs[13]; |
1207 | 43fff238 | bellard | |
1208 | 43fff238 | bellard | /*
|
1209 | 43fff238 | bellard | * This is the X/Open sanctioned signal stack switching.
|
1210 | 43fff238 | bellard | */
|
1211 | 624f7979 | pbrook | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
|
1212 | a04e134a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
1213 | 43fff238 | bellard | /*
|
1214 | 43fff238 | bellard | * ATPCS B01 mandates 8-byte alignment
|
1215 | 43fff238 | bellard | */
|
1216 | 579a97f7 | bellard | return (sp - framesize) & ~7; |
1217 | 43fff238 | bellard | } |
1218 | 43fff238 | bellard | |
1219 | 43fff238 | bellard | static int |
1220 | 624f7979 | pbrook | setup_return(CPUState *env, struct target_sigaction *ka,
|
1221 | f8b0aa25 | bellard | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
|
1222 | 43fff238 | bellard | { |
1223 | 624f7979 | pbrook | abi_ulong handler = ka->_sa_handler; |
1224 | 992f48a0 | blueswir1 | abi_ulong retcode; |
1225 | 75b680e5 | pbrook | int thumb = handler & 1; |
1226 | 43fff238 | bellard | |
1227 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_RESTORER) {
|
1228 | 624f7979 | pbrook | retcode = ka->sa_restorer; |
1229 | 43fff238 | bellard | } else {
|
1230 | 43fff238 | bellard | unsigned int idx = thumb; |
1231 | 43fff238 | bellard | |
1232 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_SIGINFO)
|
1233 | 43fff238 | bellard | idx += 2;
|
1234 | 43fff238 | bellard | |
1235 | 43fff238 | bellard | if (__put_user(retcodes[idx], rc))
|
1236 | 43fff238 | bellard | return 1; |
1237 | 43fff238 | bellard | #if 0
|
1238 | 992f48a0 | blueswir1 | flush_icache_range((abi_ulong)rc,
|
1239 | 992f48a0 | blueswir1 | (abi_ulong)(rc + 1));
|
1240 | 43fff238 | bellard | #endif
|
1241 | f8b0aa25 | bellard | retcode = rc_addr + thumb; |
1242 | 43fff238 | bellard | } |
1243 | 43fff238 | bellard | |
1244 | 43fff238 | bellard | env->regs[0] = usig;
|
1245 | f8b0aa25 | bellard | env->regs[13] = frame_addr;
|
1246 | 43fff238 | bellard | env->regs[14] = retcode;
|
1247 | 43fff238 | bellard | env->regs[15] = handler & (thumb ? ~1 : ~3); |
1248 | 75b680e5 | pbrook | env->thumb = thumb; |
1249 | 43fff238 | bellard | |
1250 | b5ff1b31 | bellard | #if 0
|
1251 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1252 | 43fff238 | bellard | env->cpsr = cpsr;
|
1253 | 43fff238 | bellard | #endif
|
1254 | b5ff1b31 | bellard | #endif
|
1255 | 43fff238 | bellard | |
1256 | 43fff238 | bellard | return 0; |
1257 | 43fff238 | bellard | } |
1258 | 43fff238 | bellard | |
1259 | a8c33204 | pbrook | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
1260 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
1261 | a8c33204 | pbrook | { |
1262 | a8c33204 | pbrook | struct target_sigaltstack stack;
|
1263 | a8c33204 | pbrook | int i;
|
1264 | a8c33204 | pbrook | |
1265 | a8c33204 | pbrook | /* Clear all the bits of the ucontext we don't use. */
|
1266 | a8c33204 | pbrook | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); |
1267 | a8c33204 | pbrook | |
1268 | a8c33204 | pbrook | memset(&stack, 0, sizeof(stack)); |
1269 | a8c33204 | pbrook | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); |
1270 | a8c33204 | pbrook | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); |
1271 | a8c33204 | pbrook | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); |
1272 | a8c33204 | pbrook | memcpy(&uc->tuc_stack, &stack, sizeof(stack));
|
1273 | a8c33204 | pbrook | |
1274 | a8c33204 | pbrook | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]);
|
1275 | a8c33204 | pbrook | /* FIXME: Save coprocessor signal frame. */
|
1276 | a8c33204 | pbrook | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1277 | a8c33204 | pbrook | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); |
1278 | a8c33204 | pbrook | } |
1279 | a8c33204 | pbrook | } |
1280 | a8c33204 | pbrook | |
1281 | 579a97f7 | bellard | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */
|
1282 | 624f7979 | pbrook | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
1283 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *regs) |
1284 | 43fff238 | bellard | { |
1285 | a8c33204 | pbrook | struct sigframe_v1 *frame;
|
1286 | 579a97f7 | bellard | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
|
1287 | a8c33204 | pbrook | int i;
|
1288 | 43fff238 | bellard | |
1289 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1290 | 579a97f7 | bellard | return;
|
1291 | 579a97f7 | bellard | |
1292 | a8c33204 | pbrook | setup_sigcontext(&frame->sc, regs, set->sig[0]);
|
1293 | 43fff238 | bellard | |
1294 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1295 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
1296 | 579a97f7 | bellard | goto end;
|
1297 | 43fff238 | bellard | } |
1298 | 43fff238 | bellard | |
1299 | a8c33204 | pbrook | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1300 | a8c33204 | pbrook | frame_addr + offsetof(struct sigframe_v1, retcode));
|
1301 | 579a97f7 | bellard | |
1302 | 579a97f7 | bellard | end:
|
1303 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
1304 | a8c33204 | pbrook | } |
1305 | a8c33204 | pbrook | |
1306 | 624f7979 | pbrook | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
1307 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *regs) |
1308 | a8c33204 | pbrook | { |
1309 | a8c33204 | pbrook | struct sigframe_v2 *frame;
|
1310 | a8c33204 | pbrook | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
|
1311 | a8c33204 | pbrook | |
1312 | a8c33204 | pbrook | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1313 | a8c33204 | pbrook | return;
|
1314 | a8c33204 | pbrook | |
1315 | a8c33204 | pbrook | setup_sigframe_v2(&frame->uc, set, regs); |
1316 | a8c33204 | pbrook | |
1317 | a8c33204 | pbrook | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1318 | a8c33204 | pbrook | frame_addr + offsetof(struct sigframe_v2, retcode));
|
1319 | a8c33204 | pbrook | |
1320 | a8c33204 | pbrook | unlock_user_struct(frame, frame_addr, 1);
|
1321 | a8c33204 | pbrook | } |
1322 | a8c33204 | pbrook | |
1323 | 624f7979 | pbrook | static void setup_frame(int usig, struct target_sigaction *ka, |
1324 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *regs) |
1325 | a8c33204 | pbrook | { |
1326 | a8c33204 | pbrook | if (get_osversion() >= 0x020612) { |
1327 | a8c33204 | pbrook | setup_frame_v2(usig, ka, set, regs); |
1328 | a8c33204 | pbrook | } else {
|
1329 | a8c33204 | pbrook | setup_frame_v1(usig, ka, set, regs); |
1330 | a8c33204 | pbrook | } |
1331 | 43fff238 | bellard | } |
1332 | 43fff238 | bellard | |
1333 | 579a97f7 | bellard | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
|
1334 | 624f7979 | pbrook | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
1335 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
1336 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
1337 | 43fff238 | bellard | { |
1338 | a745ec6d | pbrook | struct rt_sigframe_v1 *frame;
|
1339 | 579a97f7 | bellard | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
1340 | a04e134a | ths | struct target_sigaltstack stack;
|
1341 | a8c33204 | pbrook | int i;
|
1342 | f8b0aa25 | bellard | abi_ulong info_addr, uc_addr; |
1343 | 43fff238 | bellard | |
1344 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1345 | edf779ff | bellard | return /* 1 */; |
1346 | edf779ff | bellard | |
1347 | a745ec6d | pbrook | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
|
1348 | a8c33204 | pbrook | __put_user(info_addr, &frame->pinfo); |
1349 | a745ec6d | pbrook | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
|
1350 | a8c33204 | pbrook | __put_user(uc_addr, &frame->puc); |
1351 | a8c33204 | pbrook | copy_siginfo_to_user(&frame->info, info); |
1352 | 43fff238 | bellard | |
1353 | 43fff238 | bellard | /* Clear all the bits of the ucontext we don't use. */
|
1354 | a745ec6d | pbrook | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
1355 | 43fff238 | bellard | |
1356 | a04e134a | ths | memset(&stack, 0, sizeof(stack)); |
1357 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); |
1358 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); |
1359 | a04e134a | ths | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); |
1360 | 775b58d8 | bellard | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
|
1361 | a04e134a | ths | |
1362 | a8c33204 | pbrook | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
|
1363 | 9231944d | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1364 | b8076a74 | bellard | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
|
1365 | 579a97f7 | bellard | goto end;
|
1366 | 9231944d | bellard | } |
1367 | 43fff238 | bellard | |
1368 | a8c33204 | pbrook | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1369 | a8c33204 | pbrook | frame_addr + offsetof(struct rt_sigframe_v1, retcode));
|
1370 | a745ec6d | pbrook | |
1371 | a8c33204 | pbrook | env->regs[1] = info_addr;
|
1372 | a8c33204 | pbrook | env->regs[2] = uc_addr;
|
1373 | a745ec6d | pbrook | |
1374 | a745ec6d | pbrook | end:
|
1375 | a745ec6d | pbrook | unlock_user_struct(frame, frame_addr, 1);
|
1376 | a745ec6d | pbrook | } |
1377 | a745ec6d | pbrook | |
1378 | 624f7979 | pbrook | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
1379 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
1380 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
1381 | a745ec6d | pbrook | { |
1382 | a745ec6d | pbrook | struct rt_sigframe_v2 *frame;
|
1383 | a745ec6d | pbrook | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
1384 | a745ec6d | pbrook | abi_ulong info_addr, uc_addr; |
1385 | a745ec6d | pbrook | |
1386 | a745ec6d | pbrook | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1387 | a745ec6d | pbrook | return /* 1 */; |
1388 | a745ec6d | pbrook | |
1389 | a745ec6d | pbrook | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
|
1390 | a745ec6d | pbrook | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
|
1391 | a8c33204 | pbrook | copy_siginfo_to_user(&frame->info, info); |
1392 | a745ec6d | pbrook | |
1393 | a8c33204 | pbrook | setup_sigframe_v2(&frame->uc, set, env); |
1394 | a745ec6d | pbrook | |
1395 | a8c33204 | pbrook | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1396 | a8c33204 | pbrook | frame_addr + offsetof(struct rt_sigframe_v2, retcode));
|
1397 | a745ec6d | pbrook | |
1398 | a8c33204 | pbrook | env->regs[1] = info_addr;
|
1399 | a8c33204 | pbrook | env->regs[2] = uc_addr;
|
1400 | 43fff238 | bellard | |
1401 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
1402 | 43fff238 | bellard | } |
1403 | 43fff238 | bellard | |
1404 | 624f7979 | pbrook | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
1405 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
1406 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
1407 | a745ec6d | pbrook | { |
1408 | a745ec6d | pbrook | if (get_osversion() >= 0x020612) { |
1409 | a745ec6d | pbrook | setup_rt_frame_v2(usig, ka, info, set, env); |
1410 | a745ec6d | pbrook | } else {
|
1411 | a745ec6d | pbrook | setup_rt_frame_v1(usig, ka, info, set, env); |
1412 | a745ec6d | pbrook | } |
1413 | a745ec6d | pbrook | } |
1414 | a745ec6d | pbrook | |
1415 | 43fff238 | bellard | static int |
1416 | 43fff238 | bellard | restore_sigcontext(CPUState *env, struct target_sigcontext *sc)
|
1417 | 43fff238 | bellard | { |
1418 | 43fff238 | bellard | int err = 0; |
1419 | b5ff1b31 | bellard | uint32_t cpsr; |
1420 | 43fff238 | bellard | |
1421 | 43fff238 | bellard | __get_user_error(env->regs[0], &sc->arm_r0, err);
|
1422 | 43fff238 | bellard | __get_user_error(env->regs[1], &sc->arm_r1, err);
|
1423 | 43fff238 | bellard | __get_user_error(env->regs[2], &sc->arm_r2, err);
|
1424 | 43fff238 | bellard | __get_user_error(env->regs[3], &sc->arm_r3, err);
|
1425 | 43fff238 | bellard | __get_user_error(env->regs[4], &sc->arm_r4, err);
|
1426 | 43fff238 | bellard | __get_user_error(env->regs[5], &sc->arm_r5, err);
|
1427 | 43fff238 | bellard | __get_user_error(env->regs[6], &sc->arm_r6, err);
|
1428 | 43fff238 | bellard | __get_user_error(env->regs[7], &sc->arm_r7, err);
|
1429 | 43fff238 | bellard | __get_user_error(env->regs[8], &sc->arm_r8, err);
|
1430 | 43fff238 | bellard | __get_user_error(env->regs[9], &sc->arm_r9, err);
|
1431 | 43fff238 | bellard | __get_user_error(env->regs[10], &sc->arm_r10, err);
|
1432 | 43fff238 | bellard | __get_user_error(env->regs[11], &sc->arm_fp, err);
|
1433 | 43fff238 | bellard | __get_user_error(env->regs[12], &sc->arm_ip, err);
|
1434 | 43fff238 | bellard | __get_user_error(env->regs[13], &sc->arm_sp, err);
|
1435 | 43fff238 | bellard | __get_user_error(env->regs[14], &sc->arm_lr, err);
|
1436 | 43fff238 | bellard | __get_user_error(env->regs[15], &sc->arm_pc, err);
|
1437 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1438 | b5ff1b31 | bellard | __get_user_error(cpsr, &sc->arm_cpsr, err); |
1439 | 75b680e5 | pbrook | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
1440 | 43fff238 | bellard | #endif
|
1441 | 43fff238 | bellard | |
1442 | 43fff238 | bellard | err |= !valid_user_regs(env); |
1443 | 43fff238 | bellard | |
1444 | 43fff238 | bellard | return err;
|
1445 | 43fff238 | bellard | } |
1446 | 43fff238 | bellard | |
1447 | dc7eea67 | aurel32 | static long do_sigreturn_v1(CPUState *env) |
1448 | 43fff238 | bellard | { |
1449 | f8b0aa25 | bellard | abi_ulong frame_addr; |
1450 | a8c33204 | pbrook | struct sigframe_v1 *frame;
|
1451 | c227f099 | Anthony Liguori | target_sigset_t set; |
1452 | 43fff238 | bellard | sigset_t host_set; |
1453 | 9231944d | bellard | int i;
|
1454 | 43fff238 | bellard | |
1455 | 43fff238 | bellard | /*
|
1456 | 43fff238 | bellard | * Since we stacked the signal on a 64-bit boundary,
|
1457 | 43fff238 | bellard | * then 'sp' should be word aligned here. If it's
|
1458 | 43fff238 | bellard | * not, then the user is trying to mess with us.
|
1459 | 43fff238 | bellard | */
|
1460 | 43fff238 | bellard | if (env->regs[13] & 7) |
1461 | 43fff238 | bellard | goto badframe;
|
1462 | 43fff238 | bellard | |
1463 | f8b0aa25 | bellard | frame_addr = env->regs[13];
|
1464 | f8b0aa25 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1465 | f8b0aa25 | bellard | goto badframe;
|
1466 | 43fff238 | bellard | |
1467 | 9231944d | bellard | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1468 | 9231944d | bellard | goto badframe;
|
1469 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1470 | 9231944d | bellard | if (__get_user(set.sig[i], &frame->extramask[i - 1])) |
1471 | 9231944d | bellard | goto badframe;
|
1472 | 9231944d | bellard | } |
1473 | 43fff238 | bellard | |
1474 | 9231944d | bellard | target_to_host_sigset_internal(&host_set, &set); |
1475 | 43fff238 | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1476 | 43fff238 | bellard | |
1477 | 43fff238 | bellard | if (restore_sigcontext(env, &frame->sc))
|
1478 | 43fff238 | bellard | goto badframe;
|
1479 | 43fff238 | bellard | |
1480 | 43fff238 | bellard | #if 0
|
1481 | 43fff238 | bellard | /* Send SIGTRAP if we're single-stepping */
|
1482 | 43fff238 | bellard | if (ptrace_cancel_bpt(current))
|
1483 | 43fff238 | bellard | send_sig(SIGTRAP, current, 1);
|
1484 | 43fff238 | bellard | #endif
|
1485 | f8b0aa25 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1486 | f8b0aa25 | bellard | return env->regs[0]; |
1487 | 43fff238 | bellard | |
1488 | 43fff238 | bellard | badframe:
|
1489 | f8b0aa25 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1490 | 43fff238 | bellard | force_sig(SIGSEGV /* , current */);
|
1491 | 43fff238 | bellard | return 0; |
1492 | 43fff238 | bellard | } |
1493 | 43fff238 | bellard | |
1494 | a8c33204 | pbrook | static int do_sigframe_return_v2(CPUState *env, target_ulong frame_addr, |
1495 | a8c33204 | pbrook | struct target_ucontext_v2 *uc)
|
1496 | a8c33204 | pbrook | { |
1497 | a8c33204 | pbrook | sigset_t host_set; |
1498 | a8c33204 | pbrook | |
1499 | a8c33204 | pbrook | target_to_host_sigset(&host_set, &uc->tuc_sigmask); |
1500 | a8c33204 | pbrook | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1501 | a8c33204 | pbrook | |
1502 | a8c33204 | pbrook | if (restore_sigcontext(env, &uc->tuc_mcontext))
|
1503 | a8c33204 | pbrook | return 1; |
1504 | a8c33204 | pbrook | |
1505 | a8c33204 | pbrook | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1506 | a8c33204 | pbrook | return 1; |
1507 | a8c33204 | pbrook | |
1508 | a8c33204 | pbrook | #if 0
|
1509 | a8c33204 | pbrook | /* Send SIGTRAP if we're single-stepping */
|
1510 | a8c33204 | pbrook | if (ptrace_cancel_bpt(current))
|
1511 | a8c33204 | pbrook | send_sig(SIGTRAP, current, 1);
|
1512 | a8c33204 | pbrook | #endif
|
1513 | a8c33204 | pbrook | |
1514 | a8c33204 | pbrook | return 0; |
1515 | a8c33204 | pbrook | } |
1516 | a8c33204 | pbrook | |
1517 | dc7eea67 | aurel32 | static long do_sigreturn_v2(CPUState *env) |
1518 | a8c33204 | pbrook | { |
1519 | a8c33204 | pbrook | abi_ulong frame_addr; |
1520 | a8c33204 | pbrook | struct sigframe_v2 *frame;
|
1521 | a8c33204 | pbrook | |
1522 | a8c33204 | pbrook | /*
|
1523 | a8c33204 | pbrook | * Since we stacked the signal on a 64-bit boundary,
|
1524 | a8c33204 | pbrook | * then 'sp' should be word aligned here. If it's
|
1525 | a8c33204 | pbrook | * not, then the user is trying to mess with us.
|
1526 | a8c33204 | pbrook | */
|
1527 | a8c33204 | pbrook | if (env->regs[13] & 7) |
1528 | a8c33204 | pbrook | goto badframe;
|
1529 | a8c33204 | pbrook | |
1530 | a8c33204 | pbrook | frame_addr = env->regs[13];
|
1531 | a8c33204 | pbrook | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1532 | a8c33204 | pbrook | goto badframe;
|
1533 | a8c33204 | pbrook | |
1534 | a8c33204 | pbrook | if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
|
1535 | a8c33204 | pbrook | goto badframe;
|
1536 | a8c33204 | pbrook | |
1537 | a8c33204 | pbrook | unlock_user_struct(frame, frame_addr, 0);
|
1538 | a8c33204 | pbrook | return env->regs[0]; |
1539 | a8c33204 | pbrook | |
1540 | a8c33204 | pbrook | badframe:
|
1541 | a8c33204 | pbrook | unlock_user_struct(frame, frame_addr, 0);
|
1542 | a8c33204 | pbrook | force_sig(SIGSEGV /* , current */);
|
1543 | a8c33204 | pbrook | return 0; |
1544 | a8c33204 | pbrook | } |
1545 | a8c33204 | pbrook | |
1546 | a8c33204 | pbrook | long do_sigreturn(CPUState *env)
|
1547 | a8c33204 | pbrook | { |
1548 | a8c33204 | pbrook | if (get_osversion() >= 0x020612) { |
1549 | a8c33204 | pbrook | return do_sigreturn_v2(env);
|
1550 | a8c33204 | pbrook | } else {
|
1551 | a8c33204 | pbrook | return do_sigreturn_v1(env);
|
1552 | a8c33204 | pbrook | } |
1553 | a8c33204 | pbrook | } |
1554 | a8c33204 | pbrook | |
1555 | dc7eea67 | aurel32 | static long do_rt_sigreturn_v1(CPUState *env) |
1556 | 43fff238 | bellard | { |
1557 | f8b0aa25 | bellard | abi_ulong frame_addr; |
1558 | a745ec6d | pbrook | struct rt_sigframe_v1 *frame;
|
1559 | a745ec6d | pbrook | sigset_t host_set; |
1560 | a745ec6d | pbrook | |
1561 | a745ec6d | pbrook | /*
|
1562 | a745ec6d | pbrook | * Since we stacked the signal on a 64-bit boundary,
|
1563 | a745ec6d | pbrook | * then 'sp' should be word aligned here. If it's
|
1564 | a745ec6d | pbrook | * not, then the user is trying to mess with us.
|
1565 | a745ec6d | pbrook | */
|
1566 | a745ec6d | pbrook | if (env->regs[13] & 7) |
1567 | a745ec6d | pbrook | goto badframe;
|
1568 | a745ec6d | pbrook | |
1569 | a745ec6d | pbrook | frame_addr = env->regs[13];
|
1570 | a745ec6d | pbrook | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1571 | a745ec6d | pbrook | goto badframe;
|
1572 | a745ec6d | pbrook | |
1573 | a745ec6d | pbrook | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); |
1574 | a745ec6d | pbrook | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1575 | a745ec6d | pbrook | |
1576 | a745ec6d | pbrook | if (restore_sigcontext(env, &frame->uc.tuc_mcontext))
|
1577 | a745ec6d | pbrook | goto badframe;
|
1578 | a745ec6d | pbrook | |
1579 | a745ec6d | pbrook | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1580 | a745ec6d | pbrook | goto badframe;
|
1581 | a745ec6d | pbrook | |
1582 | a745ec6d | pbrook | #if 0
|
1583 | a745ec6d | pbrook | /* Send SIGTRAP if we're single-stepping */
|
1584 | a745ec6d | pbrook | if (ptrace_cancel_bpt(current))
|
1585 | a745ec6d | pbrook | send_sig(SIGTRAP, current, 1);
|
1586 | a745ec6d | pbrook | #endif
|
1587 | a745ec6d | pbrook | unlock_user_struct(frame, frame_addr, 0);
|
1588 | a745ec6d | pbrook | return env->regs[0]; |
1589 | a745ec6d | pbrook | |
1590 | a745ec6d | pbrook | badframe:
|
1591 | a745ec6d | pbrook | unlock_user_struct(frame, frame_addr, 0);
|
1592 | a745ec6d | pbrook | force_sig(SIGSEGV /* , current */);
|
1593 | a745ec6d | pbrook | return 0; |
1594 | a745ec6d | pbrook | } |
1595 | a745ec6d | pbrook | |
1596 | dc7eea67 | aurel32 | static long do_rt_sigreturn_v2(CPUState *env) |
1597 | a745ec6d | pbrook | { |
1598 | a745ec6d | pbrook | abi_ulong frame_addr; |
1599 | a745ec6d | pbrook | struct rt_sigframe_v2 *frame;
|
1600 | 43fff238 | bellard | |
1601 | 43fff238 | bellard | /*
|
1602 | 43fff238 | bellard | * Since we stacked the signal on a 64-bit boundary,
|
1603 | 43fff238 | bellard | * then 'sp' should be word aligned here. If it's
|
1604 | 43fff238 | bellard | * not, then the user is trying to mess with us.
|
1605 | 43fff238 | bellard | */
|
1606 | 43fff238 | bellard | if (env->regs[13] & 7) |
1607 | 43fff238 | bellard | goto badframe;
|
1608 | 43fff238 | bellard | |
1609 | f8b0aa25 | bellard | frame_addr = env->regs[13];
|
1610 | f8b0aa25 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
1611 | f8b0aa25 | bellard | goto badframe;
|
1612 | 43fff238 | bellard | |
1613 | a8c33204 | pbrook | if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
|
1614 | a8c33204 | pbrook | goto badframe;
|
1615 | a04e134a | ths | |
1616 | f8b0aa25 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1617 | 43fff238 | bellard | return env->regs[0]; |
1618 | 43fff238 | bellard | |
1619 | 43fff238 | bellard | badframe:
|
1620 | f8b0aa25 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
1621 | 43fff238 | bellard | force_sig(SIGSEGV /* , current */);
|
1622 | 43fff238 | bellard | return 0; |
1623 | 43fff238 | bellard | } |
1624 | 43fff238 | bellard | |
1625 | a745ec6d | pbrook | long do_rt_sigreturn(CPUState *env)
|
1626 | a745ec6d | pbrook | { |
1627 | a745ec6d | pbrook | if (get_osversion() >= 0x020612) { |
1628 | a745ec6d | pbrook | return do_rt_sigreturn_v2(env);
|
1629 | a745ec6d | pbrook | } else {
|
1630 | a745ec6d | pbrook | return do_rt_sigreturn_v1(env);
|
1631 | a745ec6d | pbrook | } |
1632 | a745ec6d | pbrook | } |
1633 | a745ec6d | pbrook | |
1634 | 6d5e216d | bellard | #elif defined(TARGET_SPARC)
|
1635 | 80a9d035 | bellard | |
1636 | 6d5e216d | bellard | #define __SUNOS_MAXWIN 31 |
1637 | 6d5e216d | bellard | |
1638 | 6d5e216d | bellard | /* This is what SunOS does, so shall I. */
|
1639 | 6d5e216d | bellard | struct target_sigcontext {
|
1640 | 992f48a0 | blueswir1 | abi_ulong sigc_onstack; /* state to restore */
|
1641 | 6d5e216d | bellard | |
1642 | 992f48a0 | blueswir1 | abi_ulong sigc_mask; /* sigmask to restore */
|
1643 | 992f48a0 | blueswir1 | abi_ulong sigc_sp; /* stack pointer */
|
1644 | 992f48a0 | blueswir1 | abi_ulong sigc_pc; /* program counter */
|
1645 | 992f48a0 | blueswir1 | abi_ulong sigc_npc; /* next program counter */
|
1646 | 992f48a0 | blueswir1 | abi_ulong sigc_psr; /* for condition codes etc */
|
1647 | 992f48a0 | blueswir1 | abi_ulong sigc_g1; /* User uses these two registers */
|
1648 | 992f48a0 | blueswir1 | abi_ulong sigc_o0; /* within the trampoline code. */
|
1649 | 6d5e216d | bellard | |
1650 | 6d5e216d | bellard | /* Now comes information regarding the users window set
|
1651 | 6d5e216d | bellard | * at the time of the signal.
|
1652 | 6d5e216d | bellard | */
|
1653 | 992f48a0 | blueswir1 | abi_ulong sigc_oswins; /* outstanding windows */
|
1654 | 6d5e216d | bellard | |
1655 | 6d5e216d | bellard | /* stack ptrs for each regwin buf */
|
1656 | 6d5e216d | bellard | char *sigc_spbuf[__SUNOS_MAXWIN];
|
1657 | 6d5e216d | bellard | |
1658 | 6d5e216d | bellard | /* Windows to restore after signal */
|
1659 | 6d5e216d | bellard | struct {
|
1660 | 992f48a0 | blueswir1 | abi_ulong locals[8];
|
1661 | 992f48a0 | blueswir1 | abi_ulong ins[8];
|
1662 | 6d5e216d | bellard | } sigc_wbuf[__SUNOS_MAXWIN]; |
1663 | 6d5e216d | bellard | }; |
1664 | 6d5e216d | bellard | /* A Sparc stack frame */
|
1665 | 6d5e216d | bellard | struct sparc_stackf {
|
1666 | 992f48a0 | blueswir1 | abi_ulong locals[8];
|
1667 | 992f48a0 | blueswir1 | abi_ulong ins[6];
|
1668 | 6d5e216d | bellard | struct sparc_stackf *fp;
|
1669 | 992f48a0 | blueswir1 | abi_ulong callers_pc; |
1670 | 6d5e216d | bellard | char *structptr;
|
1671 | 992f48a0 | blueswir1 | abi_ulong xargs[6];
|
1672 | 992f48a0 | blueswir1 | abi_ulong xxargs[1];
|
1673 | 6d5e216d | bellard | }; |
1674 | 6d5e216d | bellard | |
1675 | 6d5e216d | bellard | typedef struct { |
1676 | 6d5e216d | bellard | struct {
|
1677 | 992f48a0 | blueswir1 | abi_ulong psr; |
1678 | 992f48a0 | blueswir1 | abi_ulong pc; |
1679 | 992f48a0 | blueswir1 | abi_ulong npc; |
1680 | 992f48a0 | blueswir1 | abi_ulong y; |
1681 | 992f48a0 | blueswir1 | abi_ulong u_regs[16]; /* globals and ins */ |
1682 | 6d5e216d | bellard | } si_regs; |
1683 | 6d5e216d | bellard | int si_mask;
|
1684 | 6d5e216d | bellard | } __siginfo_t; |
1685 | 6d5e216d | bellard | |
1686 | 6d5e216d | bellard | typedef struct { |
1687 | 6d5e216d | bellard | unsigned long si_float_regs [32]; |
1688 | 6d5e216d | bellard | unsigned long si_fsr; |
1689 | 6d5e216d | bellard | unsigned long si_fpqdepth; |
1690 | 6d5e216d | bellard | struct {
|
1691 | 6d5e216d | bellard | unsigned long *insn_addr; |
1692 | 6d5e216d | bellard | unsigned long insn; |
1693 | 6d5e216d | bellard | } si_fpqueue [16];
|
1694 | c227f099 | Anthony Liguori | } qemu_siginfo_fpu_t; |
1695 | 6d5e216d | bellard | |
1696 | 6d5e216d | bellard | |
1697 | 6d5e216d | bellard | struct target_signal_frame {
|
1698 | 6d5e216d | bellard | struct sparc_stackf ss;
|
1699 | 6d5e216d | bellard | __siginfo_t info; |
1700 | f8b0aa25 | bellard | abi_ulong fpu_save; |
1701 | 992f48a0 | blueswir1 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
1702 | 992f48a0 | blueswir1 | abi_ulong extramask[TARGET_NSIG_WORDS - 1];
|
1703 | 992f48a0 | blueswir1 | abi_ulong extra_size; /* Should be 0 */
|
1704 | c227f099 | Anthony Liguori | qemu_siginfo_fpu_t fpu_state; |
1705 | 6d5e216d | bellard | }; |
1706 | 6d5e216d | bellard | struct target_rt_signal_frame {
|
1707 | 6d5e216d | bellard | struct sparc_stackf ss;
|
1708 | 6d5e216d | bellard | siginfo_t info; |
1709 | 992f48a0 | blueswir1 | abi_ulong regs[20];
|
1710 | 6d5e216d | bellard | sigset_t mask; |
1711 | f8b0aa25 | bellard | abi_ulong fpu_save; |
1712 | 6d5e216d | bellard | unsigned int insns[2]; |
1713 | 6d5e216d | bellard | stack_t stack; |
1714 | 6d5e216d | bellard | unsigned int extra_size; /* Should be 0 */ |
1715 | c227f099 | Anthony Liguori | qemu_siginfo_fpu_t fpu_state; |
1716 | 6d5e216d | bellard | }; |
1717 | 6d5e216d | bellard | |
1718 | e80cfcfc | bellard | #define UREG_O0 16 |
1719 | e80cfcfc | bellard | #define UREG_O6 22 |
1720 | e80cfcfc | bellard | #define UREG_I0 0 |
1721 | e80cfcfc | bellard | #define UREG_I1 1 |
1722 | e80cfcfc | bellard | #define UREG_I2 2 |
1723 | 5bfb56b2 | blueswir1 | #define UREG_I3 3 |
1724 | 5bfb56b2 | blueswir1 | #define UREG_I4 4 |
1725 | 5bfb56b2 | blueswir1 | #define UREG_I5 5 |
1726 | e80cfcfc | bellard | #define UREG_I6 6 |
1727 | e80cfcfc | bellard | #define UREG_I7 7 |
1728 | e80cfcfc | bellard | #define UREG_L0 8 |
1729 | 6d5e216d | bellard | #define UREG_FP UREG_I6
|
1730 | 6d5e216d | bellard | #define UREG_SP UREG_O6
|
1731 | 6d5e216d | bellard | |
1732 | 624f7979 | pbrook | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
1733 | 459a4017 | bellard | CPUState *env, unsigned long framesize) |
1734 | 6d5e216d | bellard | { |
1735 | 459a4017 | bellard | abi_ulong sp; |
1736 | 6d5e216d | bellard | |
1737 | 6d5e216d | bellard | sp = env->regwptr[UREG_FP]; |
1738 | 6d5e216d | bellard | |
1739 | 6d5e216d | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
1740 | 624f7979 | pbrook | if (sa->sa_flags & TARGET_SA_ONSTACK) {
|
1741 | a04e134a | ths | if (!on_sig_stack(sp)
|
1742 | a04e134a | ths | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7))
|
1743 | a04e134a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
1744 | 6d5e216d | bellard | } |
1745 | 459a4017 | bellard | return sp - framesize;
|
1746 | 6d5e216d | bellard | } |
1747 | 6d5e216d | bellard | |
1748 | 6d5e216d | bellard | static int |
1749 | 992f48a0 | blueswir1 | setup___siginfo(__siginfo_t *si, CPUState *env, abi_ulong mask) |
1750 | 6d5e216d | bellard | { |
1751 | 6d5e216d | bellard | int err = 0, i; |
1752 | 6d5e216d | bellard | |
1753 | 6d5e216d | bellard | err |= __put_user(env->psr, &si->si_regs.psr); |
1754 | 6d5e216d | bellard | err |= __put_user(env->pc, &si->si_regs.pc); |
1755 | 6d5e216d | bellard | err |= __put_user(env->npc, &si->si_regs.npc); |
1756 | 6d5e216d | bellard | err |= __put_user(env->y, &si->si_regs.y); |
1757 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1758 | 6d5e216d | bellard | err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
1759 | 6d5e216d | bellard | } |
1760 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1761 | e80cfcfc | bellard | err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
|
1762 | 6d5e216d | bellard | } |
1763 | 6d5e216d | bellard | err |= __put_user(mask, &si->si_mask); |
1764 | 6d5e216d | bellard | return err;
|
1765 | 6d5e216d | bellard | } |
1766 | e80cfcfc | bellard | |
1767 | 80a9d035 | bellard | #if 0
|
1768 | 6d5e216d | bellard | static int
|
1769 | 6d5e216d | bellard | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
|
1770 | 6d5e216d | bellard | CPUState *env, unsigned long mask)
|
1771 | 6d5e216d | bellard | {
|
1772 | 6d5e216d | bellard | int err = 0;
|
1773 | 6d5e216d | bellard | |
1774 | 6d5e216d | bellard | err |= __put_user(mask, &sc->sigc_mask);
|
1775 | 6d5e216d | bellard | err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
|
1776 | 6d5e216d | bellard | err |= __put_user(env->pc, &sc->sigc_pc);
|
1777 | 6d5e216d | bellard | err |= __put_user(env->npc, &sc->sigc_npc);
|
1778 | 6d5e216d | bellard | err |= __put_user(env->psr, &sc->sigc_psr);
|
1779 | 6d5e216d | bellard | err |= __put_user(env->gregs[1], &sc->sigc_g1);
|
1780 | 6d5e216d | bellard | err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
|
1781 | 6d5e216d | bellard | |
1782 | 6d5e216d | bellard | return err;
|
1783 | 6d5e216d | bellard | }
|
1784 | 80a9d035 | bellard | #endif
|
1785 | 6d5e216d | bellard | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
1786 | 6d5e216d | bellard | |
1787 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
1788 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
1789 | 6d5e216d | bellard | { |
1790 | 459a4017 | bellard | abi_ulong sf_addr; |
1791 | 6d5e216d | bellard | struct target_signal_frame *sf;
|
1792 | 6d5e216d | bellard | int sigframe_size, err, i;
|
1793 | 6d5e216d | bellard | |
1794 | 6d5e216d | bellard | /* 1. Make sure everything is clean */
|
1795 | 6d5e216d | bellard | //synchronize_user_stack();
|
1796 | 6d5e216d | bellard | |
1797 | 6d5e216d | bellard | sigframe_size = NF_ALIGNEDSZ; |
1798 | 459a4017 | bellard | sf_addr = get_sigframe(ka, env, sigframe_size); |
1799 | 6d5e216d | bellard | |
1800 | 459a4017 | bellard | sf = lock_user(VERIFY_WRITE, sf_addr, |
1801 | 459a4017 | bellard | sizeof(struct target_signal_frame), 0); |
1802 | 459a4017 | bellard | if (!sf)
|
1803 | 459a4017 | bellard | goto sigsegv;
|
1804 | 459a4017 | bellard | |
1805 | e80cfcfc | bellard | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
|
1806 | 6d5e216d | bellard | #if 0
|
1807 | 6d5e216d | bellard | if (invalid_frame_pointer(sf, sigframe_size))
|
1808 | 6d5e216d | bellard | goto sigill_and_return;
|
1809 | 6d5e216d | bellard | #endif
|
1810 | 6d5e216d | bellard | /* 2. Save the current process state */
|
1811 | 6d5e216d | bellard | err = setup___siginfo(&sf->info, env, set->sig[0]);
|
1812 | 6d5e216d | bellard | err |= __put_user(0, &sf->extra_size);
|
1813 | 6d5e216d | bellard | |
1814 | 6d5e216d | bellard | //err |= save_fpu_state(regs, &sf->fpu_state);
|
1815 | 6d5e216d | bellard | //err |= __put_user(&sf->fpu_state, &sf->fpu_save);
|
1816 | 6d5e216d | bellard | |
1817 | 6d5e216d | bellard | err |= __put_user(set->sig[0], &sf->info.si_mask);
|
1818 | 6d5e216d | bellard | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { |
1819 | 6d5e216d | bellard | err |= __put_user(set->sig[i + 1], &sf->extramask[i]);
|
1820 | 6d5e216d | bellard | } |
1821 | 6d5e216d | bellard | |
1822 | a315a145 | bellard | for (i = 0; i < 8; i++) { |
1823 | e80cfcfc | bellard | err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
1824 | 6d5e216d | bellard | } |
1825 | a315a145 | bellard | for (i = 0; i < 8; i++) { |
1826 | e80cfcfc | bellard | err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
1827 | 6d5e216d | bellard | } |
1828 | 6d5e216d | bellard | if (err)
|
1829 | 6d5e216d | bellard | goto sigsegv;
|
1830 | 6d5e216d | bellard | |
1831 | 6d5e216d | bellard | /* 3. signal handler back-trampoline and parameters */
|
1832 | 459a4017 | bellard | env->regwptr[UREG_FP] = sf_addr; |
1833 | 6d5e216d | bellard | env->regwptr[UREG_I0] = sig; |
1834 | 459a4017 | bellard | env->regwptr[UREG_I1] = sf_addr + |
1835 | 459a4017 | bellard | offsetof(struct target_signal_frame, info);
|
1836 | 459a4017 | bellard | env->regwptr[UREG_I2] = sf_addr + |
1837 | 459a4017 | bellard | offsetof(struct target_signal_frame, info);
|
1838 | 6d5e216d | bellard | |
1839 | 6d5e216d | bellard | /* 4. signal handler */
|
1840 | 624f7979 | pbrook | env->pc = ka->_sa_handler; |
1841 | 6d5e216d | bellard | env->npc = (env->pc + 4);
|
1842 | 6d5e216d | bellard | /* 5. return to kernel instructions */
|
1843 | 624f7979 | pbrook | if (ka->sa_restorer)
|
1844 | 624f7979 | pbrook | env->regwptr[UREG_I7] = ka->sa_restorer; |
1845 | 6d5e216d | bellard | else {
|
1846 | 775b58d8 | bellard | uint32_t val32; |
1847 | 459a4017 | bellard | |
1848 | 459a4017 | bellard | env->regwptr[UREG_I7] = sf_addr + |
1849 | 459a4017 | bellard | offsetof(struct target_signal_frame, insns) - 2 * 4; |
1850 | 6d5e216d | bellard | |
1851 | 6d5e216d | bellard | /* mov __NR_sigreturn, %g1 */
|
1852 | 775b58d8 | bellard | val32 = 0x821020d8;
|
1853 | 775b58d8 | bellard | err |= __put_user(val32, &sf->insns[0]);
|
1854 | 6d5e216d | bellard | |
1855 | 6d5e216d | bellard | /* t 0x10 */
|
1856 | 775b58d8 | bellard | val32 = 0x91d02010;
|
1857 | 775b58d8 | bellard | err |= __put_user(val32, &sf->insns[1]);
|
1858 | 6d5e216d | bellard | if (err)
|
1859 | 6d5e216d | bellard | goto sigsegv;
|
1860 | 6d5e216d | bellard | |
1861 | 6d5e216d | bellard | /* Flush instruction space. */
|
1862 | 6d5e216d | bellard | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
|
1863 | 80a9d035 | bellard | // tb_flush(env);
|
1864 | 6d5e216d | bellard | } |
1865 | 459a4017 | bellard | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
1866 | 6d5e216d | bellard | return;
|
1867 | 459a4017 | bellard | #if 0
|
1868 | 459a4017 | bellard | sigill_and_return:
|
1869 | 6d5e216d | bellard | force_sig(TARGET_SIGILL);
|
1870 | 459a4017 | bellard | #endif
|
1871 | 6d5e216d | bellard | sigsegv:
|
1872 | e80cfcfc | bellard | //fprintf(stderr, "force_sig\n");
|
1873 | 459a4017 | bellard | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
1874 | 6d5e216d | bellard | force_sig(TARGET_SIGSEGV); |
1875 | 6d5e216d | bellard | } |
1876 | 6d5e216d | bellard | static inline int |
1877 | c227f099 | Anthony Liguori | restore_fpu_state(CPUState *env, qemu_siginfo_fpu_t *fpu) |
1878 | 6d5e216d | bellard | { |
1879 | 6d5e216d | bellard | int err;
|
1880 | 6d5e216d | bellard | #if 0
|
1881 | 6d5e216d | bellard | #ifdef CONFIG_SMP
|
1882 | 6d5e216d | bellard | if (current->flags & PF_USEDFPU)
|
1883 | 6d5e216d | bellard | regs->psr &= ~PSR_EF;
|
1884 | 6d5e216d | bellard | #else
|
1885 | 6d5e216d | bellard | if (current == last_task_used_math) {
|
1886 | 6d5e216d | bellard | last_task_used_math = 0;
|
1887 | 6d5e216d | bellard | regs->psr &= ~PSR_EF; |
1888 | 6d5e216d | bellard | } |
1889 | 6d5e216d | bellard | #endif
|
1890 | 6d5e216d | bellard | current->used_math = 1;
|
1891 | 6d5e216d | bellard | current->flags &= ~PF_USEDFPU; |
1892 | 6d5e216d | bellard | #endif
|
1893 | 6d5e216d | bellard | #if 0
|
1894 | 6d5e216d | bellard | if (verify_area (VERIFY_READ, fpu, sizeof(*fpu)))
|
1895 | 6d5e216d | bellard | return -EFAULT;
|
1896 | 6d5e216d | bellard | #endif
|
1897 | 6d5e216d | bellard | |
1898 | fafffaef | bellard | #if 0
|
1899 | fafffaef | bellard | /* XXX: incorrect */
|
1900 | 6d5e216d | bellard | err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0],
|
1901 | 6d5e216d | bellard | (sizeof(unsigned long) * 32));
|
1902 | fafffaef | bellard | #endif
|
1903 | 6d5e216d | bellard | err |= __get_user(env->fsr, &fpu->si_fsr); |
1904 | 6d5e216d | bellard | #if 0
|
1905 | 6d5e216d | bellard | err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
|
1906 | 6d5e216d | bellard | if (current->thread.fpqdepth != 0)
|
1907 | 6d5e216d | bellard | err |= __copy_from_user(¤t->thread.fpqueue[0],
|
1908 | 6d5e216d | bellard | &fpu->si_fpqueue[0],
|
1909 | 6d5e216d | bellard | ((sizeof(unsigned long) +
|
1910 | 6d5e216d | bellard | (sizeof(unsigned long *)))*16));
|
1911 | 6d5e216d | bellard | #endif
|
1912 | 6d5e216d | bellard | return err;
|
1913 | 6d5e216d | bellard | } |
1914 | 6d5e216d | bellard | |
1915 | 6d5e216d | bellard | |
1916 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
1917 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
1918 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
1919 | 6d5e216d | bellard | { |
1920 | 6d5e216d | bellard | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
1921 | 6d5e216d | bellard | } |
1922 | 6d5e216d | bellard | |
1923 | 6d5e216d | bellard | long do_sigreturn(CPUState *env)
|
1924 | 6d5e216d | bellard | { |
1925 | f8b0aa25 | bellard | abi_ulong sf_addr; |
1926 | 6d5e216d | bellard | struct target_signal_frame *sf;
|
1927 | e80cfcfc | bellard | uint32_t up_psr, pc, npc; |
1928 | c227f099 | Anthony Liguori | target_sigset_t set; |
1929 | e80cfcfc | bellard | sigset_t host_set; |
1930 | f8b0aa25 | bellard | abi_ulong fpu_save_addr; |
1931 | e80cfcfc | bellard | int err, i;
|
1932 | 6d5e216d | bellard | |
1933 | f8b0aa25 | bellard | sf_addr = env->regwptr[UREG_FP]; |
1934 | f8b0aa25 | bellard | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) |
1935 | f8b0aa25 | bellard | goto segv_and_exit;
|
1936 | 80a9d035 | bellard | #if 0
|
1937 | e80cfcfc | bellard | fprintf(stderr, "sigreturn\n");
|
1938 | e80cfcfc | bellard | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
|
1939 | 80a9d035 | bellard | #endif
|
1940 | e80cfcfc | bellard | //cpu_dump_state(env, stderr, fprintf, 0);
|
1941 | 6d5e216d | bellard | |
1942 | 6d5e216d | bellard | /* 1. Make sure we are not getting garbage from the user */
|
1943 | 6d5e216d | bellard | |
1944 | f8b0aa25 | bellard | if (sf_addr & 3) |
1945 | 6d5e216d | bellard | goto segv_and_exit;
|
1946 | 6d5e216d | bellard | |
1947 | 6d5e216d | bellard | err = __get_user(pc, &sf->info.si_regs.pc); |
1948 | 6d5e216d | bellard | err |= __get_user(npc, &sf->info.si_regs.npc); |
1949 | 6d5e216d | bellard | |
1950 | 6d5e216d | bellard | if ((pc | npc) & 3) |
1951 | 6d5e216d | bellard | goto segv_and_exit;
|
1952 | 6d5e216d | bellard | |
1953 | 6d5e216d | bellard | /* 2. Restore the state */
|
1954 | e80cfcfc | bellard | err |= __get_user(up_psr, &sf->info.si_regs.psr); |
1955 | e80cfcfc | bellard | |
1956 | 6d5e216d | bellard | /* User can only change condition codes and FPU enabling in %psr. */
|
1957 | a315a145 | bellard | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
|
1958 | a315a145 | bellard | | (env->psr & ~(PSR_ICC /* | PSR_EF */));
|
1959 | a315a145 | bellard | |
1960 | a315a145 | bellard | env->pc = pc; |
1961 | a315a145 | bellard | env->npc = npc; |
1962 | e80cfcfc | bellard | err |= __get_user(env->y, &sf->info.si_regs.y); |
1963 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1964 | e80cfcfc | bellard | err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
1965 | e80cfcfc | bellard | } |
1966 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1967 | e80cfcfc | bellard | err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
|
1968 | e80cfcfc | bellard | } |
1969 | 6d5e216d | bellard | |
1970 | f8b0aa25 | bellard | err |= __get_user(fpu_save_addr, &sf->fpu_save); |
1971 | 6d5e216d | bellard | |
1972 | e80cfcfc | bellard | //if (fpu_save)
|
1973 | e80cfcfc | bellard | // err |= restore_fpu_state(env, fpu_save);
|
1974 | 6d5e216d | bellard | |
1975 | 6d5e216d | bellard | /* This is pretty much atomic, no amount locking would prevent
|
1976 | 6d5e216d | bellard | * the races which exist anyways.
|
1977 | 6d5e216d | bellard | */
|
1978 | 6d5e216d | bellard | err |= __get_user(set.sig[0], &sf->info.si_mask);
|
1979 | e80cfcfc | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1980 | e80cfcfc | bellard | err |= (__get_user(set.sig[i], &sf->extramask[i - 1]));
|
1981 | e80cfcfc | bellard | } |
1982 | e80cfcfc | bellard | |
1983 | e80cfcfc | bellard | target_to_host_sigset_internal(&host_set, &set); |
1984 | e80cfcfc | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1985 | 6d5e216d | bellard | |
1986 | 6d5e216d | bellard | if (err)
|
1987 | 6d5e216d | bellard | goto segv_and_exit;
|
1988 | f8b0aa25 | bellard | unlock_user_struct(sf, sf_addr, 0);
|
1989 | 6d5e216d | bellard | return env->regwptr[0]; |
1990 | 6d5e216d | bellard | |
1991 | 6d5e216d | bellard | segv_and_exit:
|
1992 | f8b0aa25 | bellard | unlock_user_struct(sf, sf_addr, 0);
|
1993 | 6d5e216d | bellard | force_sig(TARGET_SIGSEGV); |
1994 | 6d5e216d | bellard | } |
1995 | 6d5e216d | bellard | |
1996 | 6d5e216d | bellard | long do_rt_sigreturn(CPUState *env)
|
1997 | 6d5e216d | bellard | { |
1998 | 6d5e216d | bellard | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
1999 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
2000 | 6d5e216d | bellard | } |
2001 | 6d5e216d | bellard | |
2002 | 459a4017 | bellard | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
2003 | 5bfb56b2 | blueswir1 | #define MC_TSTATE 0 |
2004 | 5bfb56b2 | blueswir1 | #define MC_PC 1 |
2005 | 5bfb56b2 | blueswir1 | #define MC_NPC 2 |
2006 | 5bfb56b2 | blueswir1 | #define MC_Y 3 |
2007 | 5bfb56b2 | blueswir1 | #define MC_G1 4 |
2008 | 5bfb56b2 | blueswir1 | #define MC_G2 5 |
2009 | 5bfb56b2 | blueswir1 | #define MC_G3 6 |
2010 | 5bfb56b2 | blueswir1 | #define MC_G4 7 |
2011 | 5bfb56b2 | blueswir1 | #define MC_G5 8 |
2012 | 5bfb56b2 | blueswir1 | #define MC_G6 9 |
2013 | 5bfb56b2 | blueswir1 | #define MC_G7 10 |
2014 | 5bfb56b2 | blueswir1 | #define MC_O0 11 |
2015 | 5bfb56b2 | blueswir1 | #define MC_O1 12 |
2016 | 5bfb56b2 | blueswir1 | #define MC_O2 13 |
2017 | 5bfb56b2 | blueswir1 | #define MC_O3 14 |
2018 | 5bfb56b2 | blueswir1 | #define MC_O4 15 |
2019 | 5bfb56b2 | blueswir1 | #define MC_O5 16 |
2020 | 5bfb56b2 | blueswir1 | #define MC_O6 17 |
2021 | 5bfb56b2 | blueswir1 | #define MC_O7 18 |
2022 | 5bfb56b2 | blueswir1 | #define MC_NGREG 19 |
2023 | 5bfb56b2 | blueswir1 | |
2024 | c227f099 | Anthony Liguori | typedef abi_ulong target_mc_greg_t;
|
2025 | c227f099 | Anthony Liguori | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG];
|
2026 | 5bfb56b2 | blueswir1 | |
2027 | 5bfb56b2 | blueswir1 | struct target_mc_fq {
|
2028 | 992f48a0 | blueswir1 | abi_ulong *mcfq_addr; |
2029 | 5bfb56b2 | blueswir1 | uint32_t mcfq_insn; |
2030 | 5bfb56b2 | blueswir1 | }; |
2031 | 5bfb56b2 | blueswir1 | |
2032 | 5bfb56b2 | blueswir1 | struct target_mc_fpu {
|
2033 | 5bfb56b2 | blueswir1 | union {
|
2034 | 5bfb56b2 | blueswir1 | uint32_t sregs[32];
|
2035 | 5bfb56b2 | blueswir1 | uint64_t dregs[32];
|
2036 | 5bfb56b2 | blueswir1 | //uint128_t qregs[16];
|
2037 | 5bfb56b2 | blueswir1 | } mcfpu_fregs; |
2038 | 992f48a0 | blueswir1 | abi_ulong mcfpu_fsr; |
2039 | 992f48a0 | blueswir1 | abi_ulong mcfpu_fprs; |
2040 | 992f48a0 | blueswir1 | abi_ulong mcfpu_gsr; |
2041 | 5bfb56b2 | blueswir1 | struct target_mc_fq *mcfpu_fq;
|
2042 | 5bfb56b2 | blueswir1 | unsigned char mcfpu_qcnt; |
2043 | 5bfb56b2 | blueswir1 | unsigned char mcfpu_qentsz; |
2044 | 5bfb56b2 | blueswir1 | unsigned char mcfpu_enab; |
2045 | 5bfb56b2 | blueswir1 | }; |
2046 | c227f099 | Anthony Liguori | typedef struct target_mc_fpu target_mc_fpu_t; |
2047 | 5bfb56b2 | blueswir1 | |
2048 | 5bfb56b2 | blueswir1 | typedef struct { |
2049 | c227f099 | Anthony Liguori | target_mc_gregset_t mc_gregs; |
2050 | c227f099 | Anthony Liguori | target_mc_greg_t mc_fp; |
2051 | c227f099 | Anthony Liguori | target_mc_greg_t mc_i7; |
2052 | c227f099 | Anthony Liguori | target_mc_fpu_t mc_fpregs; |
2053 | c227f099 | Anthony Liguori | } target_mcontext_t; |
2054 | 5bfb56b2 | blueswir1 | |
2055 | 5bfb56b2 | blueswir1 | struct target_ucontext {
|
2056 | 5bfb56b2 | blueswir1 | struct target_ucontext *uc_link;
|
2057 | 992f48a0 | blueswir1 | abi_ulong uc_flags; |
2058 | c227f099 | Anthony Liguori | target_sigset_t uc_sigmask; |
2059 | c227f099 | Anthony Liguori | target_mcontext_t uc_mcontext; |
2060 | 5bfb56b2 | blueswir1 | }; |
2061 | 5bfb56b2 | blueswir1 | |
2062 | 5bfb56b2 | blueswir1 | /* A V9 register window */
|
2063 | 5bfb56b2 | blueswir1 | struct target_reg_window {
|
2064 | 992f48a0 | blueswir1 | abi_ulong locals[8];
|
2065 | 992f48a0 | blueswir1 | abi_ulong ins[8];
|
2066 | 5bfb56b2 | blueswir1 | }; |
2067 | 5bfb56b2 | blueswir1 | |
2068 | 5bfb56b2 | blueswir1 | #define TARGET_STACK_BIAS 2047 |
2069 | 5bfb56b2 | blueswir1 | |
2070 | 5bfb56b2 | blueswir1 | /* {set, get}context() needed for 64-bit SparcLinux userland. */
|
2071 | 5bfb56b2 | blueswir1 | void sparc64_set_context(CPUSPARCState *env)
|
2072 | 5bfb56b2 | blueswir1 | { |
2073 | 459a4017 | bellard | abi_ulong ucp_addr; |
2074 | 459a4017 | bellard | struct target_ucontext *ucp;
|
2075 | c227f099 | Anthony Liguori | target_mc_gregset_t *grp; |
2076 | 992f48a0 | blueswir1 | abi_ulong pc, npc, tstate; |
2077 | 459a4017 | bellard | abi_ulong fp, i7, w_addr; |
2078 | 5bfb56b2 | blueswir1 | unsigned char fenab; |
2079 | 5bfb56b2 | blueswir1 | int err;
|
2080 | 5bfb56b2 | blueswir1 | unsigned int i; |
2081 | 5bfb56b2 | blueswir1 | |
2082 | 459a4017 | bellard | ucp_addr = env->regwptr[UREG_I0]; |
2083 | 459a4017 | bellard | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) |
2084 | 459a4017 | bellard | goto do_sigsegv;
|
2085 | 5bfb56b2 | blueswir1 | grp = &ucp->uc_mcontext.mc_gregs; |
2086 | 579a97f7 | bellard | err = __get_user(pc, &((*grp)[MC_PC])); |
2087 | 579a97f7 | bellard | err |= __get_user(npc, &((*grp)[MC_NPC])); |
2088 | 5bfb56b2 | blueswir1 | if (err || ((pc | npc) & 3)) |
2089 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2090 | 5bfb56b2 | blueswir1 | if (env->regwptr[UREG_I1]) {
|
2091 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
2092 | 5bfb56b2 | blueswir1 | sigset_t set; |
2093 | 5bfb56b2 | blueswir1 | |
2094 | 5bfb56b2 | blueswir1 | if (TARGET_NSIG_WORDS == 1) { |
2095 | 579a97f7 | bellard | if (__get_user(target_set.sig[0], &ucp->uc_sigmask.sig[0])) |
2096 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2097 | 5bfb56b2 | blueswir1 | } else {
|
2098 | 459a4017 | bellard | abi_ulong *src, *dst; |
2099 | 459a4017 | bellard | src = ucp->uc_sigmask.sig; |
2100 | 459a4017 | bellard | dst = target_set.sig; |
2101 | c227f099 | Anthony Liguori | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
2102 | 5bfb56b2 | blueswir1 | i++, dst++, src++) |
2103 | 459a4017 | bellard | err |= __get_user(*dst, src); |
2104 | 5bfb56b2 | blueswir1 | if (err)
|
2105 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2106 | 5bfb56b2 | blueswir1 | } |
2107 | 5bfb56b2 | blueswir1 | target_to_host_sigset_internal(&set, &target_set); |
2108 | 5bfb56b2 | blueswir1 | sigprocmask(SIG_SETMASK, &set, NULL);
|
2109 | 5bfb56b2 | blueswir1 | } |
2110 | 5bfb56b2 | blueswir1 | env->pc = pc; |
2111 | 5bfb56b2 | blueswir1 | env->npc = npc; |
2112 | 579a97f7 | bellard | err |= __get_user(env->y, &((*grp)[MC_Y])); |
2113 | 579a97f7 | bellard | err |= __get_user(tstate, &((*grp)[MC_TSTATE])); |
2114 | 5bfb56b2 | blueswir1 | env->asi = (tstate >> 24) & 0xff; |
2115 | 5bfb56b2 | blueswir1 | PUT_CCR(env, tstate >> 32);
|
2116 | 5bfb56b2 | blueswir1 | PUT_CWP64(env, tstate & 0x1f);
|
2117 | 579a97f7 | bellard | err |= __get_user(env->gregs[1], (&(*grp)[MC_G1]));
|
2118 | 579a97f7 | bellard | err |= __get_user(env->gregs[2], (&(*grp)[MC_G2]));
|
2119 | 579a97f7 | bellard | err |= __get_user(env->gregs[3], (&(*grp)[MC_G3]));
|
2120 | 579a97f7 | bellard | err |= __get_user(env->gregs[4], (&(*grp)[MC_G4]));
|
2121 | 579a97f7 | bellard | err |= __get_user(env->gregs[5], (&(*grp)[MC_G5]));
|
2122 | 579a97f7 | bellard | err |= __get_user(env->gregs[6], (&(*grp)[MC_G6]));
|
2123 | 579a97f7 | bellard | err |= __get_user(env->gregs[7], (&(*grp)[MC_G7]));
|
2124 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); |
2125 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); |
2126 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); |
2127 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); |
2128 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); |
2129 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); |
2130 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); |
2131 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); |
2132 | 579a97f7 | bellard | |
2133 | 579a97f7 | bellard | err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp)); |
2134 | 579a97f7 | bellard | err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7)); |
2135 | 579a97f7 | bellard | |
2136 | 459a4017 | bellard | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2137 | 459a4017 | bellard | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), |
2138 | 459a4017 | bellard | abi_ulong) != 0)
|
2139 | 459a4017 | bellard | goto do_sigsegv;
|
2140 | 459a4017 | bellard | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), |
2141 | 459a4017 | bellard | abi_ulong) != 0)
|
2142 | 459a4017 | bellard | goto do_sigsegv;
|
2143 | 579a97f7 | bellard | err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab)); |
2144 | 579a97f7 | bellard | err |= __get_user(env->fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs)); |
2145 | 459a4017 | bellard | { |
2146 | 459a4017 | bellard | uint32_t *src, *dst; |
2147 | 459a4017 | bellard | src = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2148 | 459a4017 | bellard | dst = env->fpr; |
2149 | 459a4017 | bellard | /* XXX: check that the CPU storage is the same as user context */
|
2150 | 459a4017 | bellard | for (i = 0; i < 64; i++, dst++, src++) |
2151 | 459a4017 | bellard | err |= __get_user(*dst, src); |
2152 | 459a4017 | bellard | } |
2153 | 579a97f7 | bellard | err |= __get_user(env->fsr, |
2154 | 579a97f7 | bellard | &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr)); |
2155 | 579a97f7 | bellard | err |= __get_user(env->gsr, |
2156 | 579a97f7 | bellard | &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr)); |
2157 | 5bfb56b2 | blueswir1 | if (err)
|
2158 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2159 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 0);
|
2160 | 5bfb56b2 | blueswir1 | return;
|
2161 | 5bfb56b2 | blueswir1 | do_sigsegv:
|
2162 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 0);
|
2163 | 5bfb56b2 | blueswir1 | force_sig(SIGSEGV); |
2164 | 5bfb56b2 | blueswir1 | } |
2165 | 5bfb56b2 | blueswir1 | |
2166 | 5bfb56b2 | blueswir1 | void sparc64_get_context(CPUSPARCState *env)
|
2167 | 5bfb56b2 | blueswir1 | { |
2168 | 459a4017 | bellard | abi_ulong ucp_addr; |
2169 | 459a4017 | bellard | struct target_ucontext *ucp;
|
2170 | c227f099 | Anthony Liguori | target_mc_gregset_t *grp; |
2171 | c227f099 | Anthony Liguori | target_mcontext_t *mcp; |
2172 | 459a4017 | bellard | abi_ulong fp, i7, w_addr; |
2173 | 5bfb56b2 | blueswir1 | int err;
|
2174 | 5bfb56b2 | blueswir1 | unsigned int i; |
2175 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
2176 | 5bfb56b2 | blueswir1 | sigset_t set; |
2177 | 5bfb56b2 | blueswir1 | |
2178 | 459a4017 | bellard | ucp_addr = env->regwptr[UREG_I0]; |
2179 | 459a4017 | bellard | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) |
2180 | 459a4017 | bellard | goto do_sigsegv;
|
2181 | 459a4017 | bellard | |
2182 | 5bfb56b2 | blueswir1 | mcp = &ucp->uc_mcontext; |
2183 | 5bfb56b2 | blueswir1 | grp = &mcp->mc_gregs; |
2184 | 5bfb56b2 | blueswir1 | |
2185 | 5bfb56b2 | blueswir1 | /* Skip over the trap instruction, first. */
|
2186 | 5bfb56b2 | blueswir1 | env->pc = env->npc; |
2187 | 5bfb56b2 | blueswir1 | env->npc += 4;
|
2188 | 5bfb56b2 | blueswir1 | |
2189 | 5bfb56b2 | blueswir1 | err = 0;
|
2190 | 5bfb56b2 | blueswir1 | |
2191 | 5bfb56b2 | blueswir1 | sigprocmask(0, NULL, &set); |
2192 | 5bfb56b2 | blueswir1 | host_to_target_sigset_internal(&target_set, &set); |
2193 | 459a4017 | bellard | if (TARGET_NSIG_WORDS == 1) { |
2194 | 579a97f7 | bellard | err |= __put_user(target_set.sig[0],
|
2195 | 579a97f7 | bellard | (abi_ulong *)&ucp->uc_sigmask); |
2196 | 459a4017 | bellard | } else {
|
2197 | 459a4017 | bellard | abi_ulong *src, *dst; |
2198 | 459a4017 | bellard | src = target_set.sig; |
2199 | 459a4017 | bellard | dst = ucp->uc_sigmask.sig; |
2200 | c227f099 | Anthony Liguori | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
2201 | 5bfb56b2 | blueswir1 | i++, dst++, src++) |
2202 | 459a4017 | bellard | err |= __put_user(*src, dst); |
2203 | 5bfb56b2 | blueswir1 | if (err)
|
2204 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2205 | 5bfb56b2 | blueswir1 | } |
2206 | 5bfb56b2 | blueswir1 | |
2207 | 459a4017 | bellard | /* XXX: tstate must be saved properly */
|
2208 | 459a4017 | bellard | // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE]));
|
2209 | 579a97f7 | bellard | err |= __put_user(env->pc, &((*grp)[MC_PC])); |
2210 | 579a97f7 | bellard | err |= __put_user(env->npc, &((*grp)[MC_NPC])); |
2211 | 579a97f7 | bellard | err |= __put_user(env->y, &((*grp)[MC_Y])); |
2212 | 579a97f7 | bellard | err |= __put_user(env->gregs[1], &((*grp)[MC_G1]));
|
2213 | 579a97f7 | bellard | err |= __put_user(env->gregs[2], &((*grp)[MC_G2]));
|
2214 | 579a97f7 | bellard | err |= __put_user(env->gregs[3], &((*grp)[MC_G3]));
|
2215 | 579a97f7 | bellard | err |= __put_user(env->gregs[4], &((*grp)[MC_G4]));
|
2216 | 579a97f7 | bellard | err |= __put_user(env->gregs[5], &((*grp)[MC_G5]));
|
2217 | 579a97f7 | bellard | err |= __put_user(env->gregs[6], &((*grp)[MC_G6]));
|
2218 | 579a97f7 | bellard | err |= __put_user(env->gregs[7], &((*grp)[MC_G7]));
|
2219 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); |
2220 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); |
2221 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); |
2222 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); |
2223 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); |
2224 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); |
2225 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); |
2226 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); |
2227 | 579a97f7 | bellard | |
2228 | 459a4017 | bellard | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2229 | 459a4017 | bellard | fp = i7 = 0;
|
2230 | 459a4017 | bellard | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), |
2231 | 459a4017 | bellard | abi_ulong) != 0)
|
2232 | 459a4017 | bellard | goto do_sigsegv;
|
2233 | 459a4017 | bellard | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), |
2234 | 459a4017 | bellard | abi_ulong) != 0)
|
2235 | 459a4017 | bellard | goto do_sigsegv;
|
2236 | 579a97f7 | bellard | err |= __put_user(fp, &(mcp->mc_fp)); |
2237 | 579a97f7 | bellard | err |= __put_user(i7, &(mcp->mc_i7)); |
2238 | 5bfb56b2 | blueswir1 | |
2239 | 459a4017 | bellard | { |
2240 | 459a4017 | bellard | uint32_t *src, *dst; |
2241 | 459a4017 | bellard | src = env->fpr; |
2242 | 459a4017 | bellard | dst = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
2243 | 459a4017 | bellard | /* XXX: check that the CPU storage is the same as user context */
|
2244 | 459a4017 | bellard | for (i = 0; i < 64; i++, dst++, src++) |
2245 | 459a4017 | bellard | err |= __put_user(*src, dst); |
2246 | 459a4017 | bellard | } |
2247 | 579a97f7 | bellard | err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2248 | 579a97f7 | bellard | err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); |
2249 | 579a97f7 | bellard | err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); |
2250 | 5bfb56b2 | blueswir1 | |
2251 | 5bfb56b2 | blueswir1 | if (err)
|
2252 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2253 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 1);
|
2254 | 5bfb56b2 | blueswir1 | return;
|
2255 | 5bfb56b2 | blueswir1 | do_sigsegv:
|
2256 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 1);
|
2257 | 5bfb56b2 | blueswir1 | force_sig(SIGSEGV); |
2258 | 5bfb56b2 | blueswir1 | } |
2259 | 5bfb56b2 | blueswir1 | #endif
|
2260 | d26bc211 | ths | #elif defined(TARGET_ABI_MIPSN64)
|
2261 | 540635ba | ths | |
2262 | 540635ba | ths | # warning signal handling not implemented
|
2263 | 540635ba | ths | |
2264 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
2265 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
2266 | 540635ba | ths | { |
2267 | 540635ba | ths | fprintf(stderr, "setup_frame: not implemented\n");
|
2268 | 540635ba | ths | } |
2269 | 540635ba | ths | |
2270 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
2271 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
2272 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
2273 | 540635ba | ths | { |
2274 | 540635ba | ths | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
2275 | 540635ba | ths | } |
2276 | 540635ba | ths | |
2277 | 540635ba | ths | long do_sigreturn(CPUState *env)
|
2278 | 540635ba | ths | { |
2279 | 540635ba | ths | fprintf(stderr, "do_sigreturn: not implemented\n");
|
2280 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
2281 | 540635ba | ths | } |
2282 | 540635ba | ths | |
2283 | 540635ba | ths | long do_rt_sigreturn(CPUState *env)
|
2284 | 540635ba | ths | { |
2285 | 540635ba | ths | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
2286 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
2287 | 540635ba | ths | } |
2288 | 540635ba | ths | |
2289 | d26bc211 | ths | #elif defined(TARGET_ABI_MIPSN32)
|
2290 | 540635ba | ths | |
2291 | 540635ba | ths | # warning signal handling not implemented
|
2292 | 540635ba | ths | |
2293 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
2294 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
2295 | 540635ba | ths | { |
2296 | 540635ba | ths | fprintf(stderr, "setup_frame: not implemented\n");
|
2297 | 540635ba | ths | } |
2298 | 540635ba | ths | |
2299 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
2300 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
2301 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
2302 | 540635ba | ths | { |
2303 | 540635ba | ths | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
2304 | 540635ba | ths | } |
2305 | 540635ba | ths | |
2306 | 540635ba | ths | long do_sigreturn(CPUState *env)
|
2307 | 540635ba | ths | { |
2308 | 540635ba | ths | fprintf(stderr, "do_sigreturn: not implemented\n");
|
2309 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
2310 | 540635ba | ths | } |
2311 | 540635ba | ths | |
2312 | 540635ba | ths | long do_rt_sigreturn(CPUState *env)
|
2313 | 540635ba | ths | { |
2314 | 540635ba | ths | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
2315 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
2316 | 540635ba | ths | } |
2317 | 540635ba | ths | |
2318 | d26bc211 | ths | #elif defined(TARGET_ABI_MIPSO32)
|
2319 | 106ec879 | bellard | |
2320 | 106ec879 | bellard | struct target_sigcontext {
|
2321 | 106ec879 | bellard | uint32_t sc_regmask; /* Unused */
|
2322 | 106ec879 | bellard | uint32_t sc_status; |
2323 | 106ec879 | bellard | uint64_t sc_pc; |
2324 | 106ec879 | bellard | uint64_t sc_regs[32];
|
2325 | 106ec879 | bellard | uint64_t sc_fpregs[32];
|
2326 | 106ec879 | bellard | uint32_t sc_ownedfp; /* Unused */
|
2327 | 106ec879 | bellard | uint32_t sc_fpc_csr; |
2328 | 106ec879 | bellard | uint32_t sc_fpc_eir; /* Unused */
|
2329 | 106ec879 | bellard | uint32_t sc_used_math; |
2330 | 106ec879 | bellard | uint32_t sc_dsp; /* dsp status, was sc_ssflags */
|
2331 | 94c5495d | Paul Brook | uint32_t pad0; |
2332 | 106ec879 | bellard | uint64_t sc_mdhi; |
2333 | 106ec879 | bellard | uint64_t sc_mdlo; |
2334 | 106ec879 | bellard | target_ulong sc_hi1; /* Was sc_cause */
|
2335 | 106ec879 | bellard | target_ulong sc_lo1; /* Was sc_badvaddr */
|
2336 | 106ec879 | bellard | target_ulong sc_hi2; /* Was sc_sigset[4] */
|
2337 | 106ec879 | bellard | target_ulong sc_lo2; |
2338 | 106ec879 | bellard | target_ulong sc_hi3; |
2339 | 106ec879 | bellard | target_ulong sc_lo3; |
2340 | 106ec879 | bellard | }; |
2341 | 106ec879 | bellard | |
2342 | 106ec879 | bellard | struct sigframe {
|
2343 | 106ec879 | bellard | uint32_t sf_ass[4]; /* argument save space for o32 */ |
2344 | 106ec879 | bellard | uint32_t sf_code[2]; /* signal trampoline */ |
2345 | 106ec879 | bellard | struct target_sigcontext sf_sc;
|
2346 | c227f099 | Anthony Liguori | target_sigset_t sf_mask; |
2347 | 106ec879 | bellard | }; |
2348 | 106ec879 | bellard | |
2349 | 0b1bcb00 | pbrook | struct target_ucontext {
|
2350 | 0b1bcb00 | pbrook | target_ulong uc_flags; |
2351 | 0b1bcb00 | pbrook | target_ulong uc_link; |
2352 | c227f099 | Anthony Liguori | target_stack_t uc_stack; |
2353 | 94c5495d | Paul Brook | target_ulong pad0; |
2354 | 0b1bcb00 | pbrook | struct target_sigcontext uc_mcontext;
|
2355 | c227f099 | Anthony Liguori | target_sigset_t uc_sigmask; |
2356 | 0b1bcb00 | pbrook | }; |
2357 | 0b1bcb00 | pbrook | |
2358 | 0b1bcb00 | pbrook | struct target_rt_sigframe {
|
2359 | 0b1bcb00 | pbrook | uint32_t rs_ass[4]; /* argument save space for o32 */ |
2360 | 0b1bcb00 | pbrook | uint32_t rs_code[2]; /* signal trampoline */ |
2361 | 0b1bcb00 | pbrook | struct target_siginfo rs_info;
|
2362 | 0b1bcb00 | pbrook | struct target_ucontext rs_uc;
|
2363 | 0b1bcb00 | pbrook | }; |
2364 | 0b1bcb00 | pbrook | |
2365 | 106ec879 | bellard | /* Install trampoline to jump back from signal handler */
|
2366 | 106ec879 | bellard | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) |
2367 | 106ec879 | bellard | { |
2368 | 106ec879 | bellard | int err;
|
2369 | 106ec879 | bellard | |
2370 | 106ec879 | bellard | /*
|
2371 | 106ec879 | bellard | * Set up the return code ...
|
2372 | 106ec879 | bellard | *
|
2373 | 106ec879 | bellard | * li v0, __NR__foo_sigreturn
|
2374 | 106ec879 | bellard | * syscall
|
2375 | 106ec879 | bellard | */
|
2376 | 106ec879 | bellard | |
2377 | 106ec879 | bellard | err = __put_user(0x24020000 + syscall, tramp + 0); |
2378 | 106ec879 | bellard | err |= __put_user(0x0000000c , tramp + 1); |
2379 | 106ec879 | bellard | /* flush_cache_sigtramp((unsigned long) tramp); */
|
2380 | 106ec879 | bellard | return err;
|
2381 | 106ec879 | bellard | } |
2382 | 106ec879 | bellard | |
2383 | 106ec879 | bellard | static inline int |
2384 | 106ec879 | bellard | setup_sigcontext(CPUState *regs, struct target_sigcontext *sc)
|
2385 | 106ec879 | bellard | { |
2386 | 106ec879 | bellard | int err = 0; |
2387 | 106ec879 | bellard | |
2388 | b5dc7732 | ths | err |= __put_user(regs->active_tc.PC, &sc->sc_pc); |
2389 | 106ec879 | bellard | |
2390 | b5dc7732 | ths | #define save_gp_reg(i) do { \ |
2391 | b5dc7732 | ths | err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ |
2392 | 106ec879 | bellard | } while(0) |
2393 | 106ec879 | bellard | __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2); |
2394 | 106ec879 | bellard | save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6); |
2395 | 106ec879 | bellard | save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10); |
2396 | 106ec879 | bellard | save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14); |
2397 | 106ec879 | bellard | save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18); |
2398 | 106ec879 | bellard | save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22); |
2399 | 106ec879 | bellard | save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26); |
2400 | 106ec879 | bellard | save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30); |
2401 | 106ec879 | bellard | save_gp_reg(31);
|
2402 | 388bb21a | ths | #undef save_gp_reg
|
2403 | 106ec879 | bellard | |
2404 | b5dc7732 | ths | err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
|
2405 | b5dc7732 | ths | err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
|
2406 | 106ec879 | bellard | |
2407 | 106ec879 | bellard | /* Not used yet, but might be useful if we ever have DSP suppport */
|
2408 | 106ec879 | bellard | #if 0
|
2409 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2410 | 106ec879 | bellard | err |= __put_user(mfhi1(), &sc->sc_hi1);
|
2411 | 106ec879 | bellard | err |= __put_user(mflo1(), &sc->sc_lo1);
|
2412 | 106ec879 | bellard | err |= __put_user(mfhi2(), &sc->sc_hi2);
|
2413 | 106ec879 | bellard | err |= __put_user(mflo2(), &sc->sc_lo2);
|
2414 | 106ec879 | bellard | err |= __put_user(mfhi3(), &sc->sc_hi3);
|
2415 | 106ec879 | bellard | err |= __put_user(mflo3(), &sc->sc_lo3);
|
2416 | 106ec879 | bellard | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
|
2417 | 106ec879 | bellard | }
|
2418 | 106ec879 | bellard | /* same with 64 bit */
|
2419 | 388bb21a | ths | #ifdef CONFIG_64BIT
|
2420 | 106ec879 | bellard | err |= __put_user(regs->hi, &sc->sc_hi[0]);
|
2421 | 106ec879 | bellard | err |= __put_user(regs->lo, &sc->sc_lo[0]);
|
2422 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2423 | 106ec879 | bellard | err |= __put_user(mfhi1(), &sc->sc_hi[1]);
|
2424 | 106ec879 | bellard | err |= __put_user(mflo1(), &sc->sc_lo[1]);
|
2425 | 106ec879 | bellard | err |= __put_user(mfhi2(), &sc->sc_hi[2]);
|
2426 | 106ec879 | bellard | err |= __put_user(mflo2(), &sc->sc_lo[2]);
|
2427 | 106ec879 | bellard | err |= __put_user(mfhi3(), &sc->sc_hi[3]);
|
2428 | 106ec879 | bellard | err |= __put_user(mflo3(), &sc->sc_lo[3]);
|
2429 | 106ec879 | bellard | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
|
2430 | 106ec879 | bellard | }
|
2431 | 388bb21a | ths | #endif
|
2432 | 388bb21a | ths | #endif
|
2433 | 106ec879 | bellard | |
2434 | 388bb21a | ths | #if 0
|
2435 | 106ec879 | bellard | err |= __put_user(!!used_math(), &sc->sc_used_math);
|
2436 | 106ec879 | bellard | |
2437 | 106ec879 | bellard | if (!used_math())
|
2438 | 106ec879 | bellard | goto out;
|
2439 | 106ec879 | bellard | |
2440 | 106ec879 | bellard | /*
|
2441 | 106ec879 | bellard | * Save FPU state to signal context. Signal handler will "inherit"
|
2442 | 106ec879 | bellard | * current FPU state.
|
2443 | 106ec879 | bellard | */
|
2444 | 106ec879 | bellard | preempt_disable();
|
2445 | 106ec879 | bellard | |
2446 | 106ec879 | bellard | if (!is_fpu_owner()) {
|
2447 | 106ec879 | bellard | own_fpu();
|
2448 | 106ec879 | bellard | restore_fp(current);
|
2449 | 106ec879 | bellard | }
|
2450 | 106ec879 | bellard | err |= save_fp_context(sc);
|
2451 | 106ec879 | bellard | |
2452 | 106ec879 | bellard | preempt_enable();
|
2453 | 106ec879 | bellard | out:
|
2454 | 106ec879 | bellard | #endif
|
2455 | 106ec879 | bellard | return err;
|
2456 | 106ec879 | bellard | } |
2457 | 106ec879 | bellard | |
2458 | 106ec879 | bellard | static inline int |
2459 | 106ec879 | bellard | restore_sigcontext(CPUState *regs, struct target_sigcontext *sc)
|
2460 | 106ec879 | bellard | { |
2461 | 106ec879 | bellard | int err = 0; |
2462 | 106ec879 | bellard | |
2463 | 106ec879 | bellard | err |= __get_user(regs->CP0_EPC, &sc->sc_pc); |
2464 | 106ec879 | bellard | |
2465 | b5dc7732 | ths | err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
|
2466 | b5dc7732 | ths | err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
|
2467 | 106ec879 | bellard | |
2468 | ead9360e | ths | #define restore_gp_reg(i) do { \ |
2469 | b5dc7732 | ths | err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ |
2470 | 106ec879 | bellard | } while(0) |
2471 | 106ec879 | bellard | restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3); |
2472 | 106ec879 | bellard | restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6); |
2473 | 106ec879 | bellard | restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9); |
2474 | 106ec879 | bellard | restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12); |
2475 | 106ec879 | bellard | restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15); |
2476 | 106ec879 | bellard | restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18); |
2477 | 106ec879 | bellard | restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21); |
2478 | 106ec879 | bellard | restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24); |
2479 | 106ec879 | bellard | restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27); |
2480 | 106ec879 | bellard | restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30); |
2481 | 106ec879 | bellard | restore_gp_reg(31);
|
2482 | 388bb21a | ths | #undef restore_gp_reg
|
2483 | 106ec879 | bellard | |
2484 | 106ec879 | bellard | #if 0
|
2485 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2486 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);
|
2487 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);
|
2488 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);
|
2489 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);
|
2490 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);
|
2491 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);
|
2492 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
|
2493 | 106ec879 | bellard | }
|
2494 | 388bb21a | ths | #ifdef CONFIG_64BIT
|
2495 | 106ec879 | bellard | err |= __get_user(regs->hi, &sc->sc_hi[0]);
|
2496 | 106ec879 | bellard | err |= __get_user(regs->lo, &sc->sc_lo[0]);
|
2497 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2498 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg);
|
2499 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg);
|
2500 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg);
|
2501 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg);
|
2502 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg);
|
2503 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg);
|
2504 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
|
2505 | 106ec879 | bellard | }
|
2506 | 388bb21a | ths | #endif
|
2507 | 106ec879 | bellard | |
2508 | 106ec879 | bellard | err |= __get_user(used_math, &sc->sc_used_math); |
2509 | 106ec879 | bellard | conditional_used_math(used_math); |
2510 | 106ec879 | bellard | |
2511 | 106ec879 | bellard | preempt_disable(); |
2512 | 106ec879 | bellard | |
2513 | 106ec879 | bellard | if (used_math()) {
|
2514 | 106ec879 | bellard | /* restore fpu context if we have used it before */
|
2515 | 106ec879 | bellard | own_fpu(); |
2516 | 106ec879 | bellard | err |= restore_fp_context(sc); |
2517 | 106ec879 | bellard | } else {
|
2518 | 106ec879 | bellard | /* signal handler may have used FPU. Give it up. */
|
2519 | 106ec879 | bellard | lose_fpu(); |
2520 | 106ec879 | bellard | } |
2521 | 106ec879 | bellard | |
2522 | 106ec879 | bellard | preempt_enable(); |
2523 | 106ec879 | bellard | #endif
|
2524 | 106ec879 | bellard | return err;
|
2525 | 106ec879 | bellard | } |
2526 | 106ec879 | bellard | /*
|
2527 | 106ec879 | bellard | * Determine which stack to use..
|
2528 | 106ec879 | bellard | */
|
2529 | 579a97f7 | bellard | static inline abi_ulong |
2530 | 624f7979 | pbrook | get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size)
|
2531 | 106ec879 | bellard | { |
2532 | 106ec879 | bellard | unsigned long sp; |
2533 | 106ec879 | bellard | |
2534 | 106ec879 | bellard | /* Default to using normal stack */
|
2535 | b5dc7732 | ths | sp = regs->active_tc.gpr[29];
|
2536 | 106ec879 | bellard | |
2537 | 106ec879 | bellard | /*
|
2538 | 106ec879 | bellard | * FPU emulator may have it's own trampoline active just
|
2539 | 106ec879 | bellard | * above the user stack, 16-bytes before the next lowest
|
2540 | 106ec879 | bellard | * 16 byte boundary. Try to avoid trashing it.
|
2541 | 106ec879 | bellard | */
|
2542 | 106ec879 | bellard | sp -= 32;
|
2543 | 106ec879 | bellard | |
2544 | 106ec879 | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
2545 | 624f7979 | pbrook | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
2546 | a04e134a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2547 | a04e134a | ths | } |
2548 | 106ec879 | bellard | |
2549 | 579a97f7 | bellard | return (sp - frame_size) & ~7; |
2550 | 106ec879 | bellard | } |
2551 | 106ec879 | bellard | |
2552 | 579a97f7 | bellard | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */
|
2553 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction * ka, |
2554 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *regs) |
2555 | 106ec879 | bellard | { |
2556 | 106ec879 | bellard | struct sigframe *frame;
|
2557 | 579a97f7 | bellard | abi_ulong frame_addr; |
2558 | 106ec879 | bellard | int i;
|
2559 | 106ec879 | bellard | |
2560 | 579a97f7 | bellard | frame_addr = get_sigframe(ka, regs, sizeof(*frame));
|
2561 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
2562 | 106ec879 | bellard | goto give_sigsegv;
|
2563 | 106ec879 | bellard | |
2564 | 106ec879 | bellard | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); |
2565 | 106ec879 | bellard | |
2566 | 106ec879 | bellard | if(setup_sigcontext(regs, &frame->sf_sc))
|
2567 | 106ec879 | bellard | goto give_sigsegv;
|
2568 | 106ec879 | bellard | |
2569 | 106ec879 | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
2570 | 106ec879 | bellard | if(__put_user(set->sig[i], &frame->sf_mask.sig[i]))
|
2571 | 106ec879 | bellard | goto give_sigsegv;
|
2572 | 106ec879 | bellard | } |
2573 | 106ec879 | bellard | |
2574 | 106ec879 | bellard | /*
|
2575 | 106ec879 | bellard | * Arguments to signal handler:
|
2576 | 106ec879 | bellard | *
|
2577 | 106ec879 | bellard | * a0 = signal number
|
2578 | 106ec879 | bellard | * a1 = 0 (should be cause)
|
2579 | 106ec879 | bellard | * a2 = pointer to struct sigcontext
|
2580 | 106ec879 | bellard | *
|
2581 | 106ec879 | bellard | * $25 and PC point to the signal handler, $29 points to the
|
2582 | 106ec879 | bellard | * struct sigframe.
|
2583 | 106ec879 | bellard | */
|
2584 | b5dc7732 | ths | regs->active_tc.gpr[ 4] = sig;
|
2585 | b5dc7732 | ths | regs->active_tc.gpr[ 5] = 0; |
2586 | b5dc7732 | ths | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); |
2587 | b5dc7732 | ths | regs->active_tc.gpr[29] = frame_addr;
|
2588 | b5dc7732 | ths | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); |
2589 | 106ec879 | bellard | /* The original kernel code sets CP0_EPC to the handler
|
2590 | 106ec879 | bellard | * since it returns to userland using eret
|
2591 | 106ec879 | bellard | * we cannot do this here, and we must set PC directly */
|
2592 | b5dc7732 | ths | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler;
|
2593 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
2594 | 106ec879 | bellard | return;
|
2595 | 106ec879 | bellard | |
2596 | 106ec879 | bellard | give_sigsegv:
|
2597 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
2598 | 106ec879 | bellard | force_sig(TARGET_SIGSEGV/*, current*/);
|
2599 | 5fafdf24 | ths | return;
|
2600 | 106ec879 | bellard | } |
2601 | 106ec879 | bellard | |
2602 | 106ec879 | bellard | long do_sigreturn(CPUState *regs)
|
2603 | 106ec879 | bellard | { |
2604 | 388bb21a | ths | struct sigframe *frame;
|
2605 | 579a97f7 | bellard | abi_ulong frame_addr; |
2606 | 388bb21a | ths | sigset_t blocked; |
2607 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
2608 | 388bb21a | ths | int i;
|
2609 | 106ec879 | bellard | |
2610 | 106ec879 | bellard | #if defined(DEBUG_SIGNAL)
|
2611 | 388bb21a | ths | fprintf(stderr, "do_sigreturn\n");
|
2612 | 106ec879 | bellard | #endif
|
2613 | b5dc7732 | ths | frame_addr = regs->active_tc.gpr[29];
|
2614 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2615 | 106ec879 | bellard | goto badframe;
|
2616 | 106ec879 | bellard | |
2617 | 388bb21a | ths | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
2618 | 106ec879 | bellard | if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i]))
|
2619 | 106ec879 | bellard | goto badframe;
|
2620 | 388bb21a | ths | } |
2621 | 106ec879 | bellard | |
2622 | 388bb21a | ths | target_to_host_sigset_internal(&blocked, &target_set); |
2623 | 388bb21a | ths | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
2624 | 106ec879 | bellard | |
2625 | 388bb21a | ths | if (restore_sigcontext(regs, &frame->sf_sc))
|
2626 | 106ec879 | bellard | goto badframe;
|
2627 | 106ec879 | bellard | |
2628 | 106ec879 | bellard | #if 0
|
2629 | 388bb21a | ths | /*
|
2630 | 388bb21a | ths | * Don't let your children do this ...
|
2631 | 388bb21a | ths | */
|
2632 | 388bb21a | ths | __asm__ __volatile__(
|
2633 | 106ec879 | bellard | "move\t$29, %0\n\t"
|
2634 | 106ec879 | bellard | "j\tsyscall_exit"
|
2635 | 106ec879 | bellard | :/* no outputs */
|
2636 | 106ec879 | bellard | :"r" (®s));
|
2637 | 388bb21a | ths | /* Unreached */
|
2638 | 106ec879 | bellard | #endif
|
2639 | 3b46e624 | ths | |
2640 | b5dc7732 | ths | regs->active_tc.PC = regs->CP0_EPC; |
2641 | 388bb21a | ths | /* I am not sure this is right, but it seems to work
|
2642 | 106ec879 | bellard | * maybe a problem with nested signals ? */
|
2643 | 106ec879 | bellard | regs->CP0_EPC = 0;
|
2644 | 0b1bcb00 | pbrook | return -TARGET_QEMU_ESIGRETURN;
|
2645 | 106ec879 | bellard | |
2646 | 106ec879 | bellard | badframe:
|
2647 | 388bb21a | ths | force_sig(TARGET_SIGSEGV/*, current*/);
|
2648 | 388bb21a | ths | return 0; |
2649 | 106ec879 | bellard | } |
2650 | 106ec879 | bellard | |
2651 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
2652 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
2653 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
2654 | 106ec879 | bellard | { |
2655 | 0b1bcb00 | pbrook | struct target_rt_sigframe *frame;
|
2656 | 0b1bcb00 | pbrook | abi_ulong frame_addr; |
2657 | 0b1bcb00 | pbrook | int i;
|
2658 | 0b1bcb00 | pbrook | |
2659 | 0b1bcb00 | pbrook | frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
2660 | 0b1bcb00 | pbrook | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
2661 | 0b1bcb00 | pbrook | goto give_sigsegv;
|
2662 | 0b1bcb00 | pbrook | |
2663 | 0b1bcb00 | pbrook | install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn); |
2664 | 0b1bcb00 | pbrook | |
2665 | 0b1bcb00 | pbrook | copy_siginfo_to_user(&frame->rs_info, info); |
2666 | 0b1bcb00 | pbrook | |
2667 | 0b1bcb00 | pbrook | __put_user(0, &frame->rs_uc.uc_flags);
|
2668 | 0b1bcb00 | pbrook | __put_user(0, &frame->rs_uc.uc_link);
|
2669 | 0b1bcb00 | pbrook | __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.uc_stack.ss_sp); |
2670 | 0b1bcb00 | pbrook | __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.uc_stack.ss_size); |
2671 | 0b1bcb00 | pbrook | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
2672 | 0b1bcb00 | pbrook | &frame->rs_uc.uc_stack.ss_flags); |
2673 | 0b1bcb00 | pbrook | |
2674 | 0b1bcb00 | pbrook | setup_sigcontext(env, &frame->rs_uc.uc_mcontext); |
2675 | 0b1bcb00 | pbrook | |
2676 | 0b1bcb00 | pbrook | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
2677 | 0b1bcb00 | pbrook | __put_user(set->sig[i], &frame->rs_uc.uc_sigmask.sig[i]); |
2678 | 0b1bcb00 | pbrook | } |
2679 | 0b1bcb00 | pbrook | |
2680 | 0b1bcb00 | pbrook | /*
|
2681 | 0b1bcb00 | pbrook | * Arguments to signal handler:
|
2682 | 0b1bcb00 | pbrook | *
|
2683 | 0b1bcb00 | pbrook | * a0 = signal number
|
2684 | 0b1bcb00 | pbrook | * a1 = pointer to struct siginfo
|
2685 | 0b1bcb00 | pbrook | * a2 = pointer to struct ucontext
|
2686 | 0b1bcb00 | pbrook | *
|
2687 | 0b1bcb00 | pbrook | * $25 and PC point to the signal handler, $29 points to the
|
2688 | 0b1bcb00 | pbrook | * struct sigframe.
|
2689 | 0b1bcb00 | pbrook | */
|
2690 | 0b1bcb00 | pbrook | env->active_tc.gpr[ 4] = sig;
|
2691 | 0b1bcb00 | pbrook | env->active_tc.gpr[ 5] = frame_addr
|
2692 | 0b1bcb00 | pbrook | + offsetof(struct target_rt_sigframe, rs_info);
|
2693 | 0b1bcb00 | pbrook | env->active_tc.gpr[ 6] = frame_addr
|
2694 | 0b1bcb00 | pbrook | + offsetof(struct target_rt_sigframe, rs_uc);
|
2695 | 0b1bcb00 | pbrook | env->active_tc.gpr[29] = frame_addr;
|
2696 | 0b1bcb00 | pbrook | env->active_tc.gpr[31] = frame_addr
|
2697 | 0b1bcb00 | pbrook | + offsetof(struct target_rt_sigframe, rs_code);
|
2698 | 0b1bcb00 | pbrook | /* The original kernel code sets CP0_EPC to the handler
|
2699 | 0b1bcb00 | pbrook | * since it returns to userland using eret
|
2700 | 0b1bcb00 | pbrook | * we cannot do this here, and we must set PC directly */
|
2701 | 0b1bcb00 | pbrook | env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler;
|
2702 | 0b1bcb00 | pbrook | unlock_user_struct(frame, frame_addr, 1);
|
2703 | 0b1bcb00 | pbrook | return;
|
2704 | 0b1bcb00 | pbrook | |
2705 | 0b1bcb00 | pbrook | give_sigsegv:
|
2706 | 0b1bcb00 | pbrook | unlock_user_struct(frame, frame_addr, 1);
|
2707 | 0b1bcb00 | pbrook | force_sig(TARGET_SIGSEGV/*, current*/);
|
2708 | 0b1bcb00 | pbrook | return;
|
2709 | 106ec879 | bellard | } |
2710 | 106ec879 | bellard | |
2711 | 106ec879 | bellard | long do_rt_sigreturn(CPUState *env)
|
2712 | 106ec879 | bellard | { |
2713 | 0b1bcb00 | pbrook | struct target_rt_sigframe *frame;
|
2714 | 0b1bcb00 | pbrook | abi_ulong frame_addr; |
2715 | 0b1bcb00 | pbrook | sigset_t blocked; |
2716 | 0b1bcb00 | pbrook | |
2717 | 0b1bcb00 | pbrook | #if defined(DEBUG_SIGNAL)
|
2718 | 0b1bcb00 | pbrook | fprintf(stderr, "do_rt_sigreturn\n");
|
2719 | 0b1bcb00 | pbrook | #endif
|
2720 | 0b1bcb00 | pbrook | frame_addr = env->active_tc.gpr[29];
|
2721 | 0b1bcb00 | pbrook | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2722 | 0b1bcb00 | pbrook | goto badframe;
|
2723 | 0b1bcb00 | pbrook | |
2724 | 0b1bcb00 | pbrook | target_to_host_sigset(&blocked, &frame->rs_uc.uc_sigmask); |
2725 | 0b1bcb00 | pbrook | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
2726 | 0b1bcb00 | pbrook | |
2727 | 0b1bcb00 | pbrook | if (restore_sigcontext(env, &frame->rs_uc.uc_mcontext))
|
2728 | 0b1bcb00 | pbrook | goto badframe;
|
2729 | 0b1bcb00 | pbrook | |
2730 | 0b1bcb00 | pbrook | if (do_sigaltstack(frame_addr +
|
2731 | 0b1bcb00 | pbrook | offsetof(struct target_rt_sigframe, rs_uc.uc_stack),
|
2732 | 0b1bcb00 | pbrook | 0, get_sp_from_cpustate(env)) == -EFAULT)
|
2733 | 0b1bcb00 | pbrook | goto badframe;
|
2734 | 0b1bcb00 | pbrook | |
2735 | 0b1bcb00 | pbrook | env->active_tc.PC = env->CP0_EPC; |
2736 | 0b1bcb00 | pbrook | /* I am not sure this is right, but it seems to work
|
2737 | 0b1bcb00 | pbrook | * maybe a problem with nested signals ? */
|
2738 | 0b1bcb00 | pbrook | env->CP0_EPC = 0;
|
2739 | 0b1bcb00 | pbrook | return -TARGET_QEMU_ESIGRETURN;
|
2740 | 0b1bcb00 | pbrook | |
2741 | 0b1bcb00 | pbrook | badframe:
|
2742 | 0b1bcb00 | pbrook | force_sig(TARGET_SIGSEGV/*, current*/);
|
2743 | 0b1bcb00 | pbrook | return 0; |
2744 | 106ec879 | bellard | } |
2745 | 6d5e216d | bellard | |
2746 | c3b5bc8a | ths | #elif defined(TARGET_SH4)
|
2747 | c3b5bc8a | ths | |
2748 | c3b5bc8a | ths | /*
|
2749 | c3b5bc8a | ths | * code and data structures from linux kernel:
|
2750 | c3b5bc8a | ths | * include/asm-sh/sigcontext.h
|
2751 | c3b5bc8a | ths | * arch/sh/kernel/signal.c
|
2752 | c3b5bc8a | ths | */
|
2753 | c3b5bc8a | ths | |
2754 | c3b5bc8a | ths | struct target_sigcontext {
|
2755 | c3b5bc8a | ths | target_ulong oldmask; |
2756 | c3b5bc8a | ths | |
2757 | c3b5bc8a | ths | /* CPU registers */
|
2758 | c3b5bc8a | ths | target_ulong sc_gregs[16];
|
2759 | c3b5bc8a | ths | target_ulong sc_pc; |
2760 | c3b5bc8a | ths | target_ulong sc_pr; |
2761 | c3b5bc8a | ths | target_ulong sc_sr; |
2762 | c3b5bc8a | ths | target_ulong sc_gbr; |
2763 | c3b5bc8a | ths | target_ulong sc_mach; |
2764 | c3b5bc8a | ths | target_ulong sc_macl; |
2765 | c3b5bc8a | ths | |
2766 | c3b5bc8a | ths | /* FPU registers */
|
2767 | c3b5bc8a | ths | target_ulong sc_fpregs[16];
|
2768 | c3b5bc8a | ths | target_ulong sc_xfpregs[16];
|
2769 | c3b5bc8a | ths | unsigned int sc_fpscr; |
2770 | c3b5bc8a | ths | unsigned int sc_fpul; |
2771 | c3b5bc8a | ths | unsigned int sc_ownedfp; |
2772 | c3b5bc8a | ths | }; |
2773 | c3b5bc8a | ths | |
2774 | c3b5bc8a | ths | struct target_sigframe
|
2775 | c3b5bc8a | ths | { |
2776 | c3b5bc8a | ths | struct target_sigcontext sc;
|
2777 | c3b5bc8a | ths | target_ulong extramask[TARGET_NSIG_WORDS-1];
|
2778 | c3b5bc8a | ths | uint16_t retcode[3];
|
2779 | c3b5bc8a | ths | }; |
2780 | c3b5bc8a | ths | |
2781 | c3b5bc8a | ths | |
2782 | c3b5bc8a | ths | struct target_ucontext {
|
2783 | c3b5bc8a | ths | target_ulong uc_flags; |
2784 | c3b5bc8a | ths | struct target_ucontext *uc_link;
|
2785 | c227f099 | Anthony Liguori | target_stack_t uc_stack; |
2786 | c3b5bc8a | ths | struct target_sigcontext uc_mcontext;
|
2787 | c227f099 | Anthony Liguori | target_sigset_t uc_sigmask; /* mask last for extensibility */
|
2788 | c3b5bc8a | ths | }; |
2789 | c3b5bc8a | ths | |
2790 | c3b5bc8a | ths | struct target_rt_sigframe
|
2791 | c3b5bc8a | ths | { |
2792 | c3b5bc8a | ths | struct target_siginfo info;
|
2793 | c3b5bc8a | ths | struct target_ucontext uc;
|
2794 | c3b5bc8a | ths | uint16_t retcode[3];
|
2795 | c3b5bc8a | ths | }; |
2796 | c3b5bc8a | ths | |
2797 | c3b5bc8a | ths | |
2798 | c3b5bc8a | ths | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ |
2799 | c3b5bc8a | ths | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ |
2800 | c3b5bc8a | ths | |
2801 | 624f7979 | pbrook | static abi_ulong get_sigframe(struct target_sigaction *ka, |
2802 | c3b5bc8a | ths | unsigned long sp, size_t frame_size) |
2803 | c3b5bc8a | ths | { |
2804 | 624f7979 | pbrook | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
2805 | c3b5bc8a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2806 | c3b5bc8a | ths | } |
2807 | c3b5bc8a | ths | |
2808 | c3b5bc8a | ths | return (sp - frame_size) & -8ul; |
2809 | c3b5bc8a | ths | } |
2810 | c3b5bc8a | ths | |
2811 | c3b5bc8a | ths | static int setup_sigcontext(struct target_sigcontext *sc, |
2812 | c3b5bc8a | ths | CPUState *regs, unsigned long mask) |
2813 | c3b5bc8a | ths | { |
2814 | c3b5bc8a | ths | int err = 0; |
2815 | c3b5bc8a | ths | |
2816 | c3b5bc8a | ths | #define COPY(x) err |= __put_user(regs->x, &sc->sc_##x) |
2817 | c3b5bc8a | ths | COPY(gregs[0]); COPY(gregs[1]); |
2818 | c3b5bc8a | ths | COPY(gregs[2]); COPY(gregs[3]); |
2819 | c3b5bc8a | ths | COPY(gregs[4]); COPY(gregs[5]); |
2820 | c3b5bc8a | ths | COPY(gregs[6]); COPY(gregs[7]); |
2821 | c3b5bc8a | ths | COPY(gregs[8]); COPY(gregs[9]); |
2822 | c3b5bc8a | ths | COPY(gregs[10]); COPY(gregs[11]); |
2823 | c3b5bc8a | ths | COPY(gregs[12]); COPY(gregs[13]); |
2824 | c3b5bc8a | ths | COPY(gregs[14]); COPY(gregs[15]); |
2825 | c3b5bc8a | ths | COPY(gbr); COPY(mach); |
2826 | c3b5bc8a | ths | COPY(macl); COPY(pr); |
2827 | c3b5bc8a | ths | COPY(sr); COPY(pc); |
2828 | c3b5bc8a | ths | #undef COPY
|
2829 | c3b5bc8a | ths | |
2830 | c3b5bc8a | ths | /* todo: save FPU registers here */
|
2831 | c3b5bc8a | ths | |
2832 | c3b5bc8a | ths | /* non-iBCS2 extensions.. */
|
2833 | c3b5bc8a | ths | err |= __put_user(mask, &sc->oldmask); |
2834 | c3b5bc8a | ths | |
2835 | c3b5bc8a | ths | return err;
|
2836 | c3b5bc8a | ths | } |
2837 | c3b5bc8a | ths | |
2838 | c2764719 | pbrook | static int restore_sigcontext(CPUState *regs, |
2839 | c3b5bc8a | ths | struct target_sigcontext *sc)
|
2840 | c3b5bc8a | ths | { |
2841 | c3b5bc8a | ths | unsigned int err = 0; |
2842 | c3b5bc8a | ths | |
2843 | c3b5bc8a | ths | #define COPY(x) err |= __get_user(regs->x, &sc->sc_##x) |
2844 | c3b5bc8a | ths | COPY(gregs[1]);
|
2845 | c3b5bc8a | ths | COPY(gregs[2]); COPY(gregs[3]); |
2846 | c3b5bc8a | ths | COPY(gregs[4]); COPY(gregs[5]); |
2847 | c3b5bc8a | ths | COPY(gregs[6]); COPY(gregs[7]); |
2848 | c3b5bc8a | ths | COPY(gregs[8]); COPY(gregs[9]); |
2849 | c3b5bc8a | ths | COPY(gregs[10]); COPY(gregs[11]); |
2850 | c3b5bc8a | ths | COPY(gregs[12]); COPY(gregs[13]); |
2851 | c3b5bc8a | ths | COPY(gregs[14]); COPY(gregs[15]); |
2852 | c3b5bc8a | ths | COPY(gbr); COPY(mach); |
2853 | c3b5bc8a | ths | COPY(macl); COPY(pr); |
2854 | c3b5bc8a | ths | COPY(sr); COPY(pc); |
2855 | c3b5bc8a | ths | #undef COPY
|
2856 | c3b5bc8a | ths | |
2857 | c3b5bc8a | ths | /* todo: restore FPU registers here */
|
2858 | c3b5bc8a | ths | |
2859 | c3b5bc8a | ths | regs->tra = -1; /* disable syscall checks */ |
2860 | c3b5bc8a | ths | return err;
|
2861 | c3b5bc8a | ths | } |
2862 | c3b5bc8a | ths | |
2863 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
2864 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *regs) |
2865 | c3b5bc8a | ths | { |
2866 | c3b5bc8a | ths | struct target_sigframe *frame;
|
2867 | c3b5bc8a | ths | abi_ulong frame_addr; |
2868 | c3b5bc8a | ths | int i;
|
2869 | c3b5bc8a | ths | int err = 0; |
2870 | c3b5bc8a | ths | int signal;
|
2871 | c3b5bc8a | ths | |
2872 | c3b5bc8a | ths | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); |
2873 | c3b5bc8a | ths | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
2874 | c3b5bc8a | ths | goto give_sigsegv;
|
2875 | c3b5bc8a | ths | |
2876 | c3b5bc8a | ths | signal = current_exec_domain_sig(sig); |
2877 | c3b5bc8a | ths | |
2878 | c3b5bc8a | ths | err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
|
2879 | c3b5bc8a | ths | |
2880 | c3b5bc8a | ths | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { |
2881 | c3b5bc8a | ths | err |= __put_user(set->sig[i + 1], &frame->extramask[i]);
|
2882 | c3b5bc8a | ths | } |
2883 | c3b5bc8a | ths | |
2884 | c3b5bc8a | ths | /* Set up to return from userspace. If provided, use a stub
|
2885 | c3b5bc8a | ths | already in userspace. */
|
2886 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_RESTORER) {
|
2887 | 624f7979 | pbrook | regs->pr = (unsigned long) ka->sa_restorer; |
2888 | c3b5bc8a | ths | } else {
|
2889 | c3b5bc8a | ths | /* Generate return code (system call to sigreturn) */
|
2890 | c3b5bc8a | ths | err |= __put_user(MOVW(2), &frame->retcode[0]); |
2891 | c3b5bc8a | ths | err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
|
2892 | c3b5bc8a | ths | err |= __put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
|
2893 | c3b5bc8a | ths | regs->pr = (unsigned long) frame->retcode; |
2894 | c3b5bc8a | ths | } |
2895 | c3b5bc8a | ths | |
2896 | c3b5bc8a | ths | if (err)
|
2897 | c3b5bc8a | ths | goto give_sigsegv;
|
2898 | c3b5bc8a | ths | |
2899 | c3b5bc8a | ths | /* Set up registers for signal handler */
|
2900 | c3b5bc8a | ths | regs->gregs[15] = (unsigned long) frame; |
2901 | c3b5bc8a | ths | regs->gregs[4] = signal; /* Arg for signal handler */ |
2902 | c3b5bc8a | ths | regs->gregs[5] = 0; |
2903 | c3b5bc8a | ths | regs->gregs[6] = (unsigned long) &frame->sc; |
2904 | 624f7979 | pbrook | regs->pc = (unsigned long) ka->_sa_handler; |
2905 | c3b5bc8a | ths | |
2906 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 1);
|
2907 | c3b5bc8a | ths | return;
|
2908 | c3b5bc8a | ths | |
2909 | c3b5bc8a | ths | give_sigsegv:
|
2910 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 1);
|
2911 | c3b5bc8a | ths | force_sig(SIGSEGV); |
2912 | c3b5bc8a | ths | } |
2913 | c3b5bc8a | ths | |
2914 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
2915 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
2916 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *regs) |
2917 | c3b5bc8a | ths | { |
2918 | c3b5bc8a | ths | struct target_rt_sigframe *frame;
|
2919 | c3b5bc8a | ths | abi_ulong frame_addr; |
2920 | c3b5bc8a | ths | int i;
|
2921 | c3b5bc8a | ths | int err = 0; |
2922 | c3b5bc8a | ths | int signal;
|
2923 | c3b5bc8a | ths | |
2924 | c3b5bc8a | ths | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); |
2925 | c3b5bc8a | ths | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
2926 | c3b5bc8a | ths | goto give_sigsegv;
|
2927 | c3b5bc8a | ths | |
2928 | c3b5bc8a | ths | signal = current_exec_domain_sig(sig); |
2929 | c3b5bc8a | ths | |
2930 | c3b5bc8a | ths | err |= copy_siginfo_to_user(&frame->info, info); |
2931 | c3b5bc8a | ths | |
2932 | c3b5bc8a | ths | /* Create the ucontext. */
|
2933 | c3b5bc8a | ths | err |= __put_user(0, &frame->uc.uc_flags);
|
2934 | c3b5bc8a | ths | err |= __put_user(0, (unsigned long *)&frame->uc.uc_link); |
2935 | 526ccb7a | balrog | err |= __put_user((unsigned long)target_sigaltstack_used.ss_sp, |
2936 | c3b5bc8a | ths | &frame->uc.uc_stack.ss_sp); |
2937 | c3b5bc8a | ths | err |= __put_user(sas_ss_flags(regs->gregs[15]),
|
2938 | c3b5bc8a | ths | &frame->uc.uc_stack.ss_flags); |
2939 | c3b5bc8a | ths | err |= __put_user(target_sigaltstack_used.ss_size, |
2940 | c3b5bc8a | ths | &frame->uc.uc_stack.ss_size); |
2941 | c3b5bc8a | ths | err |= setup_sigcontext(&frame->uc.uc_mcontext, |
2942 | c3b5bc8a | ths | regs, set->sig[0]);
|
2943 | c3b5bc8a | ths | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
2944 | c3b5bc8a | ths | err |= __put_user(set->sig[i], &frame->uc.uc_sigmask.sig[i]); |
2945 | c3b5bc8a | ths | } |
2946 | c3b5bc8a | ths | |
2947 | c3b5bc8a | ths | /* Set up to return from userspace. If provided, use a stub
|
2948 | c3b5bc8a | ths | already in userspace. */
|
2949 | 624f7979 | pbrook | if (ka->sa_flags & TARGET_SA_RESTORER) {
|
2950 | 624f7979 | pbrook | regs->pr = (unsigned long) ka->sa_restorer; |
2951 | c3b5bc8a | ths | } else {
|
2952 | c3b5bc8a | ths | /* Generate return code (system call to sigreturn) */
|
2953 | c3b5bc8a | ths | err |= __put_user(MOVW(2), &frame->retcode[0]); |
2954 | c3b5bc8a | ths | err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
|
2955 | c3b5bc8a | ths | err |= __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
|
2956 | c3b5bc8a | ths | regs->pr = (unsigned long) frame->retcode; |
2957 | c3b5bc8a | ths | } |
2958 | c3b5bc8a | ths | |
2959 | c3b5bc8a | ths | if (err)
|
2960 | c3b5bc8a | ths | goto give_sigsegv;
|
2961 | c3b5bc8a | ths | |
2962 | c3b5bc8a | ths | /* Set up registers for signal handler */
|
2963 | c3b5bc8a | ths | regs->gregs[15] = (unsigned long) frame; |
2964 | c3b5bc8a | ths | regs->gregs[4] = signal; /* Arg for signal handler */ |
2965 | c3b5bc8a | ths | regs->gregs[5] = (unsigned long) &frame->info; |
2966 | c3b5bc8a | ths | regs->gregs[6] = (unsigned long) &frame->uc; |
2967 | 624f7979 | pbrook | regs->pc = (unsigned long) ka->_sa_handler; |
2968 | c3b5bc8a | ths | |
2969 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 1);
|
2970 | c3b5bc8a | ths | return;
|
2971 | c3b5bc8a | ths | |
2972 | c3b5bc8a | ths | give_sigsegv:
|
2973 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 1);
|
2974 | c3b5bc8a | ths | force_sig(SIGSEGV); |
2975 | c3b5bc8a | ths | } |
2976 | c3b5bc8a | ths | |
2977 | c3b5bc8a | ths | long do_sigreturn(CPUState *regs)
|
2978 | c3b5bc8a | ths | { |
2979 | c3b5bc8a | ths | struct target_sigframe *frame;
|
2980 | c3b5bc8a | ths | abi_ulong frame_addr; |
2981 | c3b5bc8a | ths | sigset_t blocked; |
2982 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
2983 | c3b5bc8a | ths | int i;
|
2984 | c3b5bc8a | ths | int err = 0; |
2985 | c3b5bc8a | ths | |
2986 | c3b5bc8a | ths | #if defined(DEBUG_SIGNAL)
|
2987 | c3b5bc8a | ths | fprintf(stderr, "do_sigreturn\n");
|
2988 | c3b5bc8a | ths | #endif
|
2989 | c3b5bc8a | ths | frame_addr = regs->gregs[15];
|
2990 | c3b5bc8a | ths | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2991 | c3b5bc8a | ths | goto badframe;
|
2992 | c3b5bc8a | ths | |
2993 | c3b5bc8a | ths | err |= __get_user(target_set.sig[0], &frame->sc.oldmask);
|
2994 | c3b5bc8a | ths | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
2995 | c3b5bc8a | ths | err |= (__get_user(target_set.sig[i], &frame->extramask[i - 1]));
|
2996 | c3b5bc8a | ths | } |
2997 | c3b5bc8a | ths | |
2998 | c3b5bc8a | ths | if (err)
|
2999 | c3b5bc8a | ths | goto badframe;
|
3000 | c3b5bc8a | ths | |
3001 | c3b5bc8a | ths | target_to_host_sigset_internal(&blocked, &target_set); |
3002 | c3b5bc8a | ths | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
3003 | c3b5bc8a | ths | |
3004 | c3b5bc8a | ths | if (restore_sigcontext(regs, &frame->sc))
|
3005 | c3b5bc8a | ths | goto badframe;
|
3006 | c3b5bc8a | ths | |
3007 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 0);
|
3008 | c3b5bc8a | ths | return regs->gregs[0]; |
3009 | c3b5bc8a | ths | |
3010 | c3b5bc8a | ths | badframe:
|
3011 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 0);
|
3012 | c3b5bc8a | ths | force_sig(TARGET_SIGSEGV); |
3013 | c3b5bc8a | ths | return 0; |
3014 | c3b5bc8a | ths | } |
3015 | c3b5bc8a | ths | |
3016 | c3b5bc8a | ths | long do_rt_sigreturn(CPUState *regs)
|
3017 | c3b5bc8a | ths | { |
3018 | c3b5bc8a | ths | struct target_rt_sigframe *frame;
|
3019 | c3b5bc8a | ths | abi_ulong frame_addr; |
3020 | c3b5bc8a | ths | sigset_t blocked; |
3021 | c3b5bc8a | ths | |
3022 | c3b5bc8a | ths | #if defined(DEBUG_SIGNAL)
|
3023 | c3b5bc8a | ths | fprintf(stderr, "do_rt_sigreturn\n");
|
3024 | c3b5bc8a | ths | #endif
|
3025 | c3b5bc8a | ths | frame_addr = regs->gregs[15];
|
3026 | c3b5bc8a | ths | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
3027 | c3b5bc8a | ths | goto badframe;
|
3028 | c3b5bc8a | ths | |
3029 | c3b5bc8a | ths | target_to_host_sigset(&blocked, &frame->uc.uc_sigmask); |
3030 | c3b5bc8a | ths | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
3031 | c3b5bc8a | ths | |
3032 | c3b5bc8a | ths | if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
|
3033 | c3b5bc8a | ths | goto badframe;
|
3034 | c3b5bc8a | ths | |
3035 | c3b5bc8a | ths | if (do_sigaltstack(frame_addr +
|
3036 | c3b5bc8a | ths | offsetof(struct target_rt_sigframe, uc.uc_stack),
|
3037 | c3b5bc8a | ths | 0, get_sp_from_cpustate(regs)) == -EFAULT)
|
3038 | c3b5bc8a | ths | goto badframe;
|
3039 | c3b5bc8a | ths | |
3040 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 0);
|
3041 | c3b5bc8a | ths | return regs->gregs[0]; |
3042 | c3b5bc8a | ths | |
3043 | c3b5bc8a | ths | badframe:
|
3044 | c3b5bc8a | ths | unlock_user_struct(frame, frame_addr, 0);
|
3045 | c3b5bc8a | ths | force_sig(TARGET_SIGSEGV); |
3046 | c3b5bc8a | ths | return 0; |
3047 | c3b5bc8a | ths | } |
3048 | b779e29e | Edgar E. Iglesias | #elif defined(TARGET_MICROBLAZE)
|
3049 | b779e29e | Edgar E. Iglesias | |
3050 | b779e29e | Edgar E. Iglesias | struct target_sigcontext {
|
3051 | b779e29e | Edgar E. Iglesias | struct target_pt_regs regs; /* needs to be first */ |
3052 | b779e29e | Edgar E. Iglesias | uint32_t oldmask; |
3053 | b779e29e | Edgar E. Iglesias | }; |
3054 | b779e29e | Edgar E. Iglesias | |
3055 | b779e29e | Edgar E. Iglesias | /* Signal frames. */
|
3056 | b779e29e | Edgar E. Iglesias | struct target_signal_frame {
|
3057 | b779e29e | Edgar E. Iglesias | struct target_sigcontext sc;
|
3058 | b779e29e | Edgar E. Iglesias | uint32_t extramask[TARGET_NSIG_WORDS - 1];
|
3059 | b779e29e | Edgar E. Iglesias | uint32_t tramp[2];
|
3060 | b779e29e | Edgar E. Iglesias | }; |
3061 | b779e29e | Edgar E. Iglesias | |
3062 | b779e29e | Edgar E. Iglesias | struct rt_signal_frame {
|
3063 | b779e29e | Edgar E. Iglesias | struct siginfo info;
|
3064 | b779e29e | Edgar E. Iglesias | struct ucontext uc;
|
3065 | b779e29e | Edgar E. Iglesias | uint32_t tramp[2];
|
3066 | b779e29e | Edgar E. Iglesias | }; |
3067 | b779e29e | Edgar E. Iglesias | |
3068 | b779e29e | Edgar E. Iglesias | static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) |
3069 | b779e29e | Edgar E. Iglesias | { |
3070 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[0], &sc->regs.r0);
|
3071 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[1], &sc->regs.r1);
|
3072 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[2], &sc->regs.r2);
|
3073 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[3], &sc->regs.r3);
|
3074 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[4], &sc->regs.r4);
|
3075 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[5], &sc->regs.r5);
|
3076 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[6], &sc->regs.r6);
|
3077 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[7], &sc->regs.r7);
|
3078 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[8], &sc->regs.r8);
|
3079 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[9], &sc->regs.r9);
|
3080 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[10], &sc->regs.r10);
|
3081 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[11], &sc->regs.r11);
|
3082 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[12], &sc->regs.r12);
|
3083 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[13], &sc->regs.r13);
|
3084 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[14], &sc->regs.r14);
|
3085 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[15], &sc->regs.r15);
|
3086 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[16], &sc->regs.r16);
|
3087 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[17], &sc->regs.r17);
|
3088 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[18], &sc->regs.r18);
|
3089 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[19], &sc->regs.r19);
|
3090 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[20], &sc->regs.r20);
|
3091 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[21], &sc->regs.r21);
|
3092 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[22], &sc->regs.r22);
|
3093 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[23], &sc->regs.r23);
|
3094 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[24], &sc->regs.r24);
|
3095 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[25], &sc->regs.r25);
|
3096 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[26], &sc->regs.r26);
|
3097 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[27], &sc->regs.r27);
|
3098 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[28], &sc->regs.r28);
|
3099 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[29], &sc->regs.r29);
|
3100 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[30], &sc->regs.r30);
|
3101 | b779e29e | Edgar E. Iglesias | __put_user(env->regs[31], &sc->regs.r31);
|
3102 | b779e29e | Edgar E. Iglesias | __put_user(env->sregs[SR_PC], &sc->regs.pc); |
3103 | b779e29e | Edgar E. Iglesias | } |
3104 | b779e29e | Edgar E. Iglesias | |
3105 | b779e29e | Edgar E. Iglesias | static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) |
3106 | b779e29e | Edgar E. Iglesias | { |
3107 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[0], &sc->regs.r0);
|
3108 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[1], &sc->regs.r1);
|
3109 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[2], &sc->regs.r2);
|
3110 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[3], &sc->regs.r3);
|
3111 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[4], &sc->regs.r4);
|
3112 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[5], &sc->regs.r5);
|
3113 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[6], &sc->regs.r6);
|
3114 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[7], &sc->regs.r7);
|
3115 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[8], &sc->regs.r8);
|
3116 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[9], &sc->regs.r9);
|
3117 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[10], &sc->regs.r10);
|
3118 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[11], &sc->regs.r11);
|
3119 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[12], &sc->regs.r12);
|
3120 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[13], &sc->regs.r13);
|
3121 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[14], &sc->regs.r14);
|
3122 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[15], &sc->regs.r15);
|
3123 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[16], &sc->regs.r16);
|
3124 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[17], &sc->regs.r17);
|
3125 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[18], &sc->regs.r18);
|
3126 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[19], &sc->regs.r19);
|
3127 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[20], &sc->regs.r20);
|
3128 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[21], &sc->regs.r21);
|
3129 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[22], &sc->regs.r22);
|
3130 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[23], &sc->regs.r23);
|
3131 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[24], &sc->regs.r24);
|
3132 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[25], &sc->regs.r25);
|
3133 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[26], &sc->regs.r26);
|
3134 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[27], &sc->regs.r27);
|
3135 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[28], &sc->regs.r28);
|
3136 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[29], &sc->regs.r29);
|
3137 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[30], &sc->regs.r30);
|
3138 | b779e29e | Edgar E. Iglesias | __get_user(env->regs[31], &sc->regs.r31);
|
3139 | b779e29e | Edgar E. Iglesias | __get_user(env->sregs[SR_PC], &sc->regs.pc); |
3140 | b779e29e | Edgar E. Iglesias | } |
3141 | b779e29e | Edgar E. Iglesias | |
3142 | b779e29e | Edgar E. Iglesias | static abi_ulong get_sigframe(struct target_sigaction *ka, |
3143 | b779e29e | Edgar E. Iglesias | CPUState *env, int frame_size)
|
3144 | b779e29e | Edgar E. Iglesias | { |
3145 | b779e29e | Edgar E. Iglesias | abi_ulong sp = env->regs[1];
|
3146 | b779e29e | Edgar E. Iglesias | |
3147 | b779e29e | Edgar E. Iglesias | if ((ka->sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp)) |
3148 | b779e29e | Edgar E. Iglesias | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
3149 | b779e29e | Edgar E. Iglesias | |
3150 | b779e29e | Edgar E. Iglesias | return ((sp - frame_size) & -8UL); |
3151 | b779e29e | Edgar E. Iglesias | } |
3152 | b779e29e | Edgar E. Iglesias | |
3153 | b779e29e | Edgar E. Iglesias | static void setup_frame(int sig, struct target_sigaction *ka, |
3154 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
3155 | b779e29e | Edgar E. Iglesias | { |
3156 | b779e29e | Edgar E. Iglesias | struct target_signal_frame *frame;
|
3157 | b779e29e | Edgar E. Iglesias | abi_ulong frame_addr; |
3158 | b779e29e | Edgar E. Iglesias | int err = 0; |
3159 | b779e29e | Edgar E. Iglesias | int i;
|
3160 | b779e29e | Edgar E. Iglesias | |
3161 | b779e29e | Edgar E. Iglesias | frame_addr = get_sigframe(ka, env, sizeof *frame);
|
3162 | b779e29e | Edgar E. Iglesias | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
3163 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3164 | b779e29e | Edgar E. Iglesias | |
3165 | b779e29e | Edgar E. Iglesias | /* Save the mask. */
|
3166 | b779e29e | Edgar E. Iglesias | err |= __put_user(set->sig[0], &frame->sc.oldmask);
|
3167 | b779e29e | Edgar E. Iglesias | if (err)
|
3168 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3169 | b779e29e | Edgar E. Iglesias | |
3170 | b779e29e | Edgar E. Iglesias | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
3171 | b779e29e | Edgar E. Iglesias | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
3172 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3173 | b779e29e | Edgar E. Iglesias | } |
3174 | b779e29e | Edgar E. Iglesias | |
3175 | b779e29e | Edgar E. Iglesias | setup_sigcontext(&frame->sc, env); |
3176 | b779e29e | Edgar E. Iglesias | |
3177 | b779e29e | Edgar E. Iglesias | /* Set up to return from userspace. If provided, use a stub
|
3178 | b779e29e | Edgar E. Iglesias | already in userspace. */
|
3179 | b779e29e | Edgar E. Iglesias | /* minus 8 is offset to cater for "rtsd r15,8" offset */
|
3180 | b779e29e | Edgar E. Iglesias | if (ka->sa_flags & TARGET_SA_RESTORER) {
|
3181 | b779e29e | Edgar E. Iglesias | env->regs[15] = ((unsigned long)ka->sa_restorer)-8; |
3182 | b779e29e | Edgar E. Iglesias | } else {
|
3183 | b779e29e | Edgar E. Iglesias | uint32_t t; |
3184 | b779e29e | Edgar E. Iglesias | /* Note, these encodings are _big endian_! */
|
3185 | b779e29e | Edgar E. Iglesias | /* addi r12, r0, __NR_sigreturn */
|
3186 | b779e29e | Edgar E. Iglesias | t = 0x31800000UL | TARGET_NR_sigreturn;
|
3187 | b779e29e | Edgar E. Iglesias | err |= __put_user(t, frame->tramp + 0);
|
3188 | b779e29e | Edgar E. Iglesias | /* brki r14, 0x8 */
|
3189 | b779e29e | Edgar E. Iglesias | t = 0xb9cc0008UL;
|
3190 | b779e29e | Edgar E. Iglesias | err |= __put_user(t, frame->tramp + 1);
|
3191 | b779e29e | Edgar E. Iglesias | |
3192 | b779e29e | Edgar E. Iglesias | /* Return from sighandler will jump to the tramp.
|
3193 | b779e29e | Edgar E. Iglesias | Negative 8 offset because return is rtsd r15, 8 */
|
3194 | b779e29e | Edgar E. Iglesias | env->regs[15] = ((unsigned long)frame->tramp) - 8; |
3195 | b779e29e | Edgar E. Iglesias | } |
3196 | b779e29e | Edgar E. Iglesias | |
3197 | b779e29e | Edgar E. Iglesias | if (err)
|
3198 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3199 | b779e29e | Edgar E. Iglesias | |
3200 | b779e29e | Edgar E. Iglesias | /* Set up registers for signal handler */
|
3201 | b779e29e | Edgar E. Iglesias | env->regs[1] = (unsigned long) frame; |
3202 | b779e29e | Edgar E. Iglesias | /* Signal handler args: */
|
3203 | b779e29e | Edgar E. Iglesias | env->regs[5] = sig; /* Arg 0: signum */ |
3204 | b779e29e | Edgar E. Iglesias | env->regs[6] = (unsigned long) &frame->sc; /* arg 1: sigcontext */ |
3205 | b779e29e | Edgar E. Iglesias | |
3206 | b779e29e | Edgar E. Iglesias | /* Offset of 4 to handle microblaze rtid r14, 0 */
|
3207 | b779e29e | Edgar E. Iglesias | env->sregs[SR_PC] = (unsigned long)ka->_sa_handler; |
3208 | b779e29e | Edgar E. Iglesias | |
3209 | b779e29e | Edgar E. Iglesias | unlock_user_struct(frame, frame_addr, 1);
|
3210 | b779e29e | Edgar E. Iglesias | return;
|
3211 | b779e29e | Edgar E. Iglesias | badframe:
|
3212 | b779e29e | Edgar E. Iglesias | unlock_user_struct(frame, frame_addr, 1);
|
3213 | b779e29e | Edgar E. Iglesias | force_sig(TARGET_SIGSEGV); |
3214 | b779e29e | Edgar E. Iglesias | } |
3215 | b779e29e | Edgar E. Iglesias | |
3216 | b779e29e | Edgar E. Iglesias | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
3217 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
3218 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
3219 | b779e29e | Edgar E. Iglesias | { |
3220 | b779e29e | Edgar E. Iglesias | fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
|
3221 | b779e29e | Edgar E. Iglesias | } |
3222 | b779e29e | Edgar E. Iglesias | |
3223 | b779e29e | Edgar E. Iglesias | long do_sigreturn(CPUState *env)
|
3224 | b779e29e | Edgar E. Iglesias | { |
3225 | b779e29e | Edgar E. Iglesias | struct target_signal_frame *frame;
|
3226 | b779e29e | Edgar E. Iglesias | abi_ulong frame_addr; |
3227 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
3228 | b779e29e | Edgar E. Iglesias | sigset_t set; |
3229 | b779e29e | Edgar E. Iglesias | int i;
|
3230 | b779e29e | Edgar E. Iglesias | |
3231 | b779e29e | Edgar E. Iglesias | frame_addr = env->regs[R_SP]; |
3232 | b779e29e | Edgar E. Iglesias | /* Make sure the guest isn't playing games. */
|
3233 | b779e29e | Edgar E. Iglesias | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
3234 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3235 | b779e29e | Edgar E. Iglesias | |
3236 | b779e29e | Edgar E. Iglesias | /* Restore blocked signals */
|
3237 | b779e29e | Edgar E. Iglesias | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
3238 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3239 | b779e29e | Edgar E. Iglesias | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
3240 | b779e29e | Edgar E. Iglesias | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) |
3241 | b779e29e | Edgar E. Iglesias | goto badframe;
|
3242 | b779e29e | Edgar E. Iglesias | } |
3243 | b779e29e | Edgar E. Iglesias | target_to_host_sigset_internal(&set, &target_set); |
3244 | b779e29e | Edgar E. Iglesias | sigprocmask(SIG_SETMASK, &set, NULL);
|
3245 | b779e29e | Edgar E. Iglesias | |
3246 | b779e29e | Edgar E. Iglesias | restore_sigcontext(&frame->sc, env); |
3247 | b779e29e | Edgar E. Iglesias | /* We got here through a sigreturn syscall, our path back is via an
|
3248 | b779e29e | Edgar E. Iglesias | rtb insn so setup r14 for that. */
|
3249 | b779e29e | Edgar E. Iglesias | env->regs[14] = env->sregs[SR_PC];
|
3250 | b779e29e | Edgar E. Iglesias | |
3251 | b779e29e | Edgar E. Iglesias | unlock_user_struct(frame, frame_addr, 0);
|
3252 | b779e29e | Edgar E. Iglesias | return env->regs[10]; |
3253 | b779e29e | Edgar E. Iglesias | badframe:
|
3254 | b779e29e | Edgar E. Iglesias | unlock_user_struct(frame, frame_addr, 0);
|
3255 | b779e29e | Edgar E. Iglesias | force_sig(TARGET_SIGSEGV); |
3256 | b779e29e | Edgar E. Iglesias | } |
3257 | b779e29e | Edgar E. Iglesias | |
3258 | b779e29e | Edgar E. Iglesias | long do_rt_sigreturn(CPUState *env)
|
3259 | b779e29e | Edgar E. Iglesias | { |
3260 | b779e29e | Edgar E. Iglesias | fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
|
3261 | b779e29e | Edgar E. Iglesias | return -TARGET_ENOSYS;
|
3262 | b779e29e | Edgar E. Iglesias | } |
3263 | b779e29e | Edgar E. Iglesias | |
3264 | b6d3abda | edgar_igl | #elif defined(TARGET_CRIS)
|
3265 | b6d3abda | edgar_igl | |
3266 | b6d3abda | edgar_igl | struct target_sigcontext {
|
3267 | b6d3abda | edgar_igl | struct target_pt_regs regs; /* needs to be first */ |
3268 | b6d3abda | edgar_igl | uint32_t oldmask; |
3269 | b6d3abda | edgar_igl | uint32_t usp; /* usp before stacking this gunk on it */
|
3270 | b6d3abda | edgar_igl | }; |
3271 | b6d3abda | edgar_igl | |
3272 | b6d3abda | edgar_igl | /* Signal frames. */
|
3273 | b6d3abda | edgar_igl | struct target_signal_frame {
|
3274 | b6d3abda | edgar_igl | struct target_sigcontext sc;
|
3275 | b6d3abda | edgar_igl | uint32_t extramask[TARGET_NSIG_WORDS - 1];
|
3276 | b6d3abda | edgar_igl | uint8_t retcode[8]; /* Trampoline code. */ |
3277 | b6d3abda | edgar_igl | }; |
3278 | b6d3abda | edgar_igl | |
3279 | b6d3abda | edgar_igl | struct rt_signal_frame {
|
3280 | b6d3abda | edgar_igl | struct siginfo *pinfo;
|
3281 | b6d3abda | edgar_igl | void *puc;
|
3282 | b6d3abda | edgar_igl | struct siginfo info;
|
3283 | b6d3abda | edgar_igl | struct ucontext uc;
|
3284 | b6d3abda | edgar_igl | uint8_t retcode[8]; /* Trampoline code. */ |
3285 | b6d3abda | edgar_igl | }; |
3286 | b6d3abda | edgar_igl | |
3287 | b6d3abda | edgar_igl | static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) |
3288 | b6d3abda | edgar_igl | { |
3289 | 9664d928 | edgar_igl | __put_user(env->regs[0], &sc->regs.r0);
|
3290 | 9664d928 | edgar_igl | __put_user(env->regs[1], &sc->regs.r1);
|
3291 | 9664d928 | edgar_igl | __put_user(env->regs[2], &sc->regs.r2);
|
3292 | 9664d928 | edgar_igl | __put_user(env->regs[3], &sc->regs.r3);
|
3293 | 9664d928 | edgar_igl | __put_user(env->regs[4], &sc->regs.r4);
|
3294 | 9664d928 | edgar_igl | __put_user(env->regs[5], &sc->regs.r5);
|
3295 | 9664d928 | edgar_igl | __put_user(env->regs[6], &sc->regs.r6);
|
3296 | 9664d928 | edgar_igl | __put_user(env->regs[7], &sc->regs.r7);
|
3297 | 9664d928 | edgar_igl | __put_user(env->regs[8], &sc->regs.r8);
|
3298 | 9664d928 | edgar_igl | __put_user(env->regs[9], &sc->regs.r9);
|
3299 | 9664d928 | edgar_igl | __put_user(env->regs[10], &sc->regs.r10);
|
3300 | 9664d928 | edgar_igl | __put_user(env->regs[11], &sc->regs.r11);
|
3301 | 9664d928 | edgar_igl | __put_user(env->regs[12], &sc->regs.r12);
|
3302 | 9664d928 | edgar_igl | __put_user(env->regs[13], &sc->regs.r13);
|
3303 | 9664d928 | edgar_igl | __put_user(env->regs[14], &sc->usp);
|
3304 | 9664d928 | edgar_igl | __put_user(env->regs[15], &sc->regs.acr);
|
3305 | 9664d928 | edgar_igl | __put_user(env->pregs[PR_MOF], &sc->regs.mof); |
3306 | 9664d928 | edgar_igl | __put_user(env->pregs[PR_SRP], &sc->regs.srp); |
3307 | 9664d928 | edgar_igl | __put_user(env->pc, &sc->regs.erp); |
3308 | b6d3abda | edgar_igl | } |
3309 | 9664d928 | edgar_igl | |
3310 | b6d3abda | edgar_igl | static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) |
3311 | b6d3abda | edgar_igl | { |
3312 | 9664d928 | edgar_igl | __get_user(env->regs[0], &sc->regs.r0);
|
3313 | 9664d928 | edgar_igl | __get_user(env->regs[1], &sc->regs.r1);
|
3314 | 9664d928 | edgar_igl | __get_user(env->regs[2], &sc->regs.r2);
|
3315 | 9664d928 | edgar_igl | __get_user(env->regs[3], &sc->regs.r3);
|
3316 | 9664d928 | edgar_igl | __get_user(env->regs[4], &sc->regs.r4);
|
3317 | 9664d928 | edgar_igl | __get_user(env->regs[5], &sc->regs.r5);
|
3318 | 9664d928 | edgar_igl | __get_user(env->regs[6], &sc->regs.r6);
|
3319 | 9664d928 | edgar_igl | __get_user(env->regs[7], &sc->regs.r7);
|
3320 | 9664d928 | edgar_igl | __get_user(env->regs[8], &sc->regs.r8);
|
3321 | 9664d928 | edgar_igl | __get_user(env->regs[9], &sc->regs.r9);
|
3322 | 9664d928 | edgar_igl | __get_user(env->regs[10], &sc->regs.r10);
|
3323 | 9664d928 | edgar_igl | __get_user(env->regs[11], &sc->regs.r11);
|
3324 | 9664d928 | edgar_igl | __get_user(env->regs[12], &sc->regs.r12);
|
3325 | 9664d928 | edgar_igl | __get_user(env->regs[13], &sc->regs.r13);
|
3326 | 9664d928 | edgar_igl | __get_user(env->regs[14], &sc->usp);
|
3327 | 9664d928 | edgar_igl | __get_user(env->regs[15], &sc->regs.acr);
|
3328 | 9664d928 | edgar_igl | __get_user(env->pregs[PR_MOF], &sc->regs.mof); |
3329 | 9664d928 | edgar_igl | __get_user(env->pregs[PR_SRP], &sc->regs.srp); |
3330 | 9664d928 | edgar_igl | __get_user(env->pc, &sc->regs.erp); |
3331 | 9664d928 | edgar_igl | } |
3332 | 9664d928 | edgar_igl | |
3333 | 9664d928 | edgar_igl | static abi_ulong get_sigframe(CPUState *env, int framesize) |
3334 | 9664d928 | edgar_igl | { |
3335 | 9664d928 | edgar_igl | abi_ulong sp; |
3336 | b6d3abda | edgar_igl | /* Align the stack downwards to 4. */
|
3337 | 9664d928 | edgar_igl | sp = (env->regs[R_SP] & ~3);
|
3338 | 9664d928 | edgar_igl | return sp - framesize;
|
3339 | b6d3abda | edgar_igl | } |
3340 | b6d3abda | edgar_igl | |
3341 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
3342 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
3343 | b6d3abda | edgar_igl | { |
3344 | b6d3abda | edgar_igl | struct target_signal_frame *frame;
|
3345 | 9664d928 | edgar_igl | abi_ulong frame_addr; |
3346 | b6d3abda | edgar_igl | int err = 0; |
3347 | b6d3abda | edgar_igl | int i;
|
3348 | b6d3abda | edgar_igl | |
3349 | 9664d928 | edgar_igl | frame_addr = get_sigframe(env, sizeof *frame);
|
3350 | 9664d928 | edgar_igl | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
3351 | b6d3abda | edgar_igl | goto badframe;
|
3352 | b6d3abda | edgar_igl | |
3353 | b6d3abda | edgar_igl | /*
|
3354 | b6d3abda | edgar_igl | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
|
3355 | b6d3abda | edgar_igl | * use this trampoline anymore but it sets it up for GDB.
|
3356 | b6d3abda | edgar_igl | * In QEMU, using the trampoline simplifies things a bit so we use it.
|
3357 | b6d3abda | edgar_igl | *
|
3358 | b6d3abda | edgar_igl | * This is movu.w __NR_sigreturn, r9; break 13;
|
3359 | b6d3abda | edgar_igl | */
|
3360 | b6d3abda | edgar_igl | err |= __put_user(0x9c5f, frame->retcode+0); |
3361 | b6d3abda | edgar_igl | err |= __put_user(TARGET_NR_sigreturn, |
3362 | b6d3abda | edgar_igl | frame->retcode+2);
|
3363 | b6d3abda | edgar_igl | err |= __put_user(0xe93d, frame->retcode+4); |
3364 | b6d3abda | edgar_igl | |
3365 | b6d3abda | edgar_igl | /* Save the mask. */
|
3366 | b6d3abda | edgar_igl | err |= __put_user(set->sig[0], &frame->sc.oldmask);
|
3367 | b6d3abda | edgar_igl | if (err)
|
3368 | b6d3abda | edgar_igl | goto badframe;
|
3369 | b6d3abda | edgar_igl | |
3370 | b6d3abda | edgar_igl | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
3371 | b6d3abda | edgar_igl | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
3372 | b6d3abda | edgar_igl | goto badframe;
|
3373 | b6d3abda | edgar_igl | } |
3374 | b6d3abda | edgar_igl | |
3375 | b6d3abda | edgar_igl | setup_sigcontext(&frame->sc, env); |
3376 | b6d3abda | edgar_igl | |
3377 | b6d3abda | edgar_igl | /* Move the stack and setup the arguments for the handler. */
|
3378 | 526ccb7a | balrog | env->regs[R_SP] = (uint32_t) (unsigned long) frame; |
3379 | b6d3abda | edgar_igl | env->regs[10] = sig;
|
3380 | 624f7979 | pbrook | env->pc = (unsigned long) ka->_sa_handler; |
3381 | b6d3abda | edgar_igl | /* Link SRP so the guest returns through the trampoline. */
|
3382 | 526ccb7a | balrog | env->pregs[PR_SRP] = (uint32_t) (unsigned long) &frame->retcode[0]; |
3383 | b6d3abda | edgar_igl | |
3384 | 9664d928 | edgar_igl | unlock_user_struct(frame, frame_addr, 1);
|
3385 | b6d3abda | edgar_igl | return;
|
3386 | b6d3abda | edgar_igl | badframe:
|
3387 | 9664d928 | edgar_igl | unlock_user_struct(frame, frame_addr, 1);
|
3388 | b6d3abda | edgar_igl | force_sig(TARGET_SIGSEGV); |
3389 | b6d3abda | edgar_igl | } |
3390 | b6d3abda | edgar_igl | |
3391 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
3392 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
3393 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
3394 | b6d3abda | edgar_igl | { |
3395 | b6d3abda | edgar_igl | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n");
|
3396 | b6d3abda | edgar_igl | } |
3397 | b6d3abda | edgar_igl | |
3398 | b6d3abda | edgar_igl | long do_sigreturn(CPUState *env)
|
3399 | b6d3abda | edgar_igl | { |
3400 | b6d3abda | edgar_igl | struct target_signal_frame *frame;
|
3401 | 9664d928 | edgar_igl | abi_ulong frame_addr; |
3402 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
3403 | b6d3abda | edgar_igl | sigset_t set; |
3404 | b6d3abda | edgar_igl | int i;
|
3405 | b6d3abda | edgar_igl | |
3406 | 9664d928 | edgar_igl | frame_addr = env->regs[R_SP]; |
3407 | b6d3abda | edgar_igl | /* Make sure the guest isn't playing games. */
|
3408 | 9664d928 | edgar_igl | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
3409 | b6d3abda | edgar_igl | goto badframe;
|
3410 | b6d3abda | edgar_igl | |
3411 | b6d3abda | edgar_igl | /* Restore blocked signals */
|
3412 | b6d3abda | edgar_igl | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
3413 | b6d3abda | edgar_igl | goto badframe;
|
3414 | b6d3abda | edgar_igl | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
3415 | b6d3abda | edgar_igl | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) |
3416 | b6d3abda | edgar_igl | goto badframe;
|
3417 | b6d3abda | edgar_igl | } |
3418 | b6d3abda | edgar_igl | target_to_host_sigset_internal(&set, &target_set); |
3419 | b6d3abda | edgar_igl | sigprocmask(SIG_SETMASK, &set, NULL);
|
3420 | b6d3abda | edgar_igl | |
3421 | b6d3abda | edgar_igl | restore_sigcontext(&frame->sc, env); |
3422 | 9664d928 | edgar_igl | unlock_user_struct(frame, frame_addr, 0);
|
3423 | b6d3abda | edgar_igl | return env->regs[10]; |
3424 | b6d3abda | edgar_igl | badframe:
|
3425 | 9664d928 | edgar_igl | unlock_user_struct(frame, frame_addr, 0);
|
3426 | b6d3abda | edgar_igl | force_sig(TARGET_SIGSEGV); |
3427 | b6d3abda | edgar_igl | } |
3428 | b6d3abda | edgar_igl | |
3429 | b6d3abda | edgar_igl | long do_rt_sigreturn(CPUState *env)
|
3430 | b6d3abda | edgar_igl | { |
3431 | b6d3abda | edgar_igl | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
|
3432 | b6d3abda | edgar_igl | return -TARGET_ENOSYS;
|
3433 | b6d3abda | edgar_igl | } |
3434 | c3b5bc8a | ths | |
3435 | bcd4933a | Nathan Froyd | #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
|
3436 | bcd4933a | Nathan Froyd | |
3437 | bcd4933a | Nathan Froyd | /* FIXME: Many of the structures are defined for both PPC and PPC64, but
|
3438 | bcd4933a | Nathan Froyd | the signal handling is different enough that we haven't implemented
|
3439 | bcd4933a | Nathan Froyd | support for PPC64 yet. Hence the restriction above.
|
3440 | bcd4933a | Nathan Froyd | |
3441 | bcd4933a | Nathan Froyd | There are various #if'd blocks for code for TARGET_PPC64. These
|
3442 | bcd4933a | Nathan Froyd | blocks should go away so that we can successfully run 32-bit and
|
3443 | bcd4933a | Nathan Froyd | 64-bit binaries on a QEMU configured for PPC64. */
|
3444 | bcd4933a | Nathan Froyd | |
3445 | bcd4933a | Nathan Froyd | /* Size of dummy stack frame allocated when calling signal handler.
|
3446 | bcd4933a | Nathan Froyd | See arch/powerpc/include/asm/ptrace.h. */
|
3447 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3448 | bcd4933a | Nathan Froyd | #define SIGNAL_FRAMESIZE 128 |
3449 | bcd4933a | Nathan Froyd | #else
|
3450 | bcd4933a | Nathan Froyd | #define SIGNAL_FRAMESIZE 64 |
3451 | bcd4933a | Nathan Froyd | #endif
|
3452 | bcd4933a | Nathan Froyd | |
3453 | bcd4933a | Nathan Froyd | /* See arch/powerpc/include/asm/sigcontext.h. */
|
3454 | bcd4933a | Nathan Froyd | struct target_sigcontext {
|
3455 | bcd4933a | Nathan Froyd | target_ulong _unused[4];
|
3456 | bcd4933a | Nathan Froyd | int32_t signal; |
3457 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3458 | bcd4933a | Nathan Froyd | int32_t pad0; |
3459 | bcd4933a | Nathan Froyd | #endif
|
3460 | bcd4933a | Nathan Froyd | target_ulong handler; |
3461 | bcd4933a | Nathan Froyd | target_ulong oldmask; |
3462 | bcd4933a | Nathan Froyd | target_ulong regs; /* struct pt_regs __user * */
|
3463 | bcd4933a | Nathan Froyd | /* TODO: PPC64 includes extra bits here. */
|
3464 | bcd4933a | Nathan Froyd | }; |
3465 | bcd4933a | Nathan Froyd | |
3466 | bcd4933a | Nathan Froyd | /* Indices for target_mcontext.mc_gregs, below.
|
3467 | bcd4933a | Nathan Froyd | See arch/powerpc/include/asm/ptrace.h for details. */
|
3468 | bcd4933a | Nathan Froyd | enum {
|
3469 | bcd4933a | Nathan Froyd | TARGET_PT_R0 = 0,
|
3470 | bcd4933a | Nathan Froyd | TARGET_PT_R1 = 1,
|
3471 | bcd4933a | Nathan Froyd | TARGET_PT_R2 = 2,
|
3472 | bcd4933a | Nathan Froyd | TARGET_PT_R3 = 3,
|
3473 | bcd4933a | Nathan Froyd | TARGET_PT_R4 = 4,
|
3474 | bcd4933a | Nathan Froyd | TARGET_PT_R5 = 5,
|
3475 | bcd4933a | Nathan Froyd | TARGET_PT_R6 = 6,
|
3476 | bcd4933a | Nathan Froyd | TARGET_PT_R7 = 7,
|
3477 | bcd4933a | Nathan Froyd | TARGET_PT_R8 = 8,
|
3478 | bcd4933a | Nathan Froyd | TARGET_PT_R9 = 9,
|
3479 | bcd4933a | Nathan Froyd | TARGET_PT_R10 = 10,
|
3480 | bcd4933a | Nathan Froyd | TARGET_PT_R11 = 11,
|
3481 | bcd4933a | Nathan Froyd | TARGET_PT_R12 = 12,
|
3482 | bcd4933a | Nathan Froyd | TARGET_PT_R13 = 13,
|
3483 | bcd4933a | Nathan Froyd | TARGET_PT_R14 = 14,
|
3484 | bcd4933a | Nathan Froyd | TARGET_PT_R15 = 15,
|
3485 | bcd4933a | Nathan Froyd | TARGET_PT_R16 = 16,
|
3486 | bcd4933a | Nathan Froyd | TARGET_PT_R17 = 17,
|
3487 | bcd4933a | Nathan Froyd | TARGET_PT_R18 = 18,
|
3488 | bcd4933a | Nathan Froyd | TARGET_PT_R19 = 19,
|
3489 | bcd4933a | Nathan Froyd | TARGET_PT_R20 = 20,
|
3490 | bcd4933a | Nathan Froyd | TARGET_PT_R21 = 21,
|
3491 | bcd4933a | Nathan Froyd | TARGET_PT_R22 = 22,
|
3492 | bcd4933a | Nathan Froyd | TARGET_PT_R23 = 23,
|
3493 | bcd4933a | Nathan Froyd | TARGET_PT_R24 = 24,
|
3494 | bcd4933a | Nathan Froyd | TARGET_PT_R25 = 25,
|
3495 | bcd4933a | Nathan Froyd | TARGET_PT_R26 = 26,
|
3496 | bcd4933a | Nathan Froyd | TARGET_PT_R27 = 27,
|
3497 | bcd4933a | Nathan Froyd | TARGET_PT_R28 = 28,
|
3498 | bcd4933a | Nathan Froyd | TARGET_PT_R29 = 29,
|
3499 | bcd4933a | Nathan Froyd | TARGET_PT_R30 = 30,
|
3500 | bcd4933a | Nathan Froyd | TARGET_PT_R31 = 31,
|
3501 | bcd4933a | Nathan Froyd | TARGET_PT_NIP = 32,
|
3502 | bcd4933a | Nathan Froyd | TARGET_PT_MSR = 33,
|
3503 | bcd4933a | Nathan Froyd | TARGET_PT_ORIG_R3 = 34,
|
3504 | bcd4933a | Nathan Froyd | TARGET_PT_CTR = 35,
|
3505 | bcd4933a | Nathan Froyd | TARGET_PT_LNK = 36,
|
3506 | bcd4933a | Nathan Froyd | TARGET_PT_XER = 37,
|
3507 | bcd4933a | Nathan Froyd | TARGET_PT_CCR = 38,
|
3508 | bcd4933a | Nathan Froyd | /* Yes, there are two registers with #39. One is 64-bit only. */
|
3509 | bcd4933a | Nathan Froyd | TARGET_PT_MQ = 39,
|
3510 | bcd4933a | Nathan Froyd | TARGET_PT_SOFTE = 39,
|
3511 | bcd4933a | Nathan Froyd | TARGET_PT_TRAP = 40,
|
3512 | bcd4933a | Nathan Froyd | TARGET_PT_DAR = 41,
|
3513 | bcd4933a | Nathan Froyd | TARGET_PT_DSISR = 42,
|
3514 | bcd4933a | Nathan Froyd | TARGET_PT_RESULT = 43,
|
3515 | bcd4933a | Nathan Froyd | TARGET_PT_REGS_COUNT = 44
|
3516 | bcd4933a | Nathan Froyd | }; |
3517 | bcd4933a | Nathan Froyd | |
3518 | bcd4933a | Nathan Froyd | /* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
|
3519 | bcd4933a | Nathan Froyd | on 64-bit PPC, sigcontext and mcontext are one and the same. */
|
3520 | bcd4933a | Nathan Froyd | struct target_mcontext {
|
3521 | bcd4933a | Nathan Froyd | target_ulong mc_gregs[48];
|
3522 | bcd4933a | Nathan Froyd | /* Includes fpscr. */
|
3523 | bcd4933a | Nathan Froyd | uint64_t mc_fregs[33];
|
3524 | bcd4933a | Nathan Froyd | target_ulong mc_pad[2];
|
3525 | bcd4933a | Nathan Froyd | /* We need to handle Altivec and SPE at the same time, which no
|
3526 | bcd4933a | Nathan Froyd | kernel needs to do. Fortunately, the kernel defines this bit to
|
3527 | bcd4933a | Nathan Froyd | be Altivec-register-large all the time, rather than trying to
|
3528 | bcd4933a | Nathan Froyd | twiddle it based on the specific platform. */
|
3529 | bcd4933a | Nathan Froyd | union {
|
3530 | bcd4933a | Nathan Froyd | /* SPE vector registers. One extra for SPEFSCR. */
|
3531 | bcd4933a | Nathan Froyd | uint32_t spe[33];
|
3532 | bcd4933a | Nathan Froyd | /* Altivec vector registers. The packing of VSCR and VRSAVE
|
3533 | bcd4933a | Nathan Froyd | varies depending on whether we're PPC64 or not: PPC64 splits
|
3534 | bcd4933a | Nathan Froyd | them apart; PPC32 stuffs them together. */
|
3535 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3536 | 3efa9a67 | malc | #define QEMU_NVRREG 34 |
3537 | bcd4933a | Nathan Froyd | #else
|
3538 | 3efa9a67 | malc | #define QEMU_NVRREG 33 |
3539 | bcd4933a | Nathan Froyd | #endif
|
3540 | c227f099 | Anthony Liguori | ppc_avr_t altivec[QEMU_NVRREG]; |
3541 | 3efa9a67 | malc | #undef QEMU_NVRREG
|
3542 | bcd4933a | Nathan Froyd | } mc_vregs __attribute__((__aligned__(16)));
|
3543 | bcd4933a | Nathan Froyd | }; |
3544 | bcd4933a | Nathan Froyd | |
3545 | bcd4933a | Nathan Froyd | struct target_ucontext {
|
3546 | bcd4933a | Nathan Froyd | target_ulong uc_flags; |
3547 | bcd4933a | Nathan Froyd | target_ulong uc_link; /* struct ucontext __user * */
|
3548 | bcd4933a | Nathan Froyd | struct target_sigaltstack uc_stack;
|
3549 | bcd4933a | Nathan Froyd | #if !defined(TARGET_PPC64)
|
3550 | bcd4933a | Nathan Froyd | int32_t uc_pad[7];
|
3551 | bcd4933a | Nathan Froyd | target_ulong uc_regs; /* struct mcontext __user *
|
3552 | bcd4933a | Nathan Froyd | points to uc_mcontext field */
|
3553 | bcd4933a | Nathan Froyd | #endif
|
3554 | c227f099 | Anthony Liguori | target_sigset_t uc_sigmask; |
3555 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3556 | c227f099 | Anthony Liguori | target_sigset_t unused[15]; /* Allow for uc_sigmask growth */ |
3557 | bcd4933a | Nathan Froyd | struct target_sigcontext uc_mcontext;
|
3558 | bcd4933a | Nathan Froyd | #else
|
3559 | bcd4933a | Nathan Froyd | int32_t uc_maskext[30];
|
3560 | bcd4933a | Nathan Froyd | int32_t uc_pad2[3];
|
3561 | bcd4933a | Nathan Froyd | struct target_mcontext uc_mcontext;
|
3562 | bcd4933a | Nathan Froyd | #endif
|
3563 | bcd4933a | Nathan Froyd | }; |
3564 | bcd4933a | Nathan Froyd | |
3565 | bcd4933a | Nathan Froyd | /* See arch/powerpc/kernel/signal_32.c. */
|
3566 | bcd4933a | Nathan Froyd | struct target_sigframe {
|
3567 | bcd4933a | Nathan Froyd | struct target_sigcontext sctx;
|
3568 | bcd4933a | Nathan Froyd | struct target_mcontext mctx;
|
3569 | bcd4933a | Nathan Froyd | int32_t abigap[56];
|
3570 | bcd4933a | Nathan Froyd | }; |
3571 | bcd4933a | Nathan Froyd | |
3572 | bcd4933a | Nathan Froyd | struct target_rt_sigframe {
|
3573 | bcd4933a | Nathan Froyd | struct target_siginfo info;
|
3574 | bcd4933a | Nathan Froyd | struct target_ucontext uc;
|
3575 | bcd4933a | Nathan Froyd | int32_t abigap[56];
|
3576 | bcd4933a | Nathan Froyd | }; |
3577 | bcd4933a | Nathan Froyd | |
3578 | bcd4933a | Nathan Froyd | /* We use the mc_pad field for the signal return trampoline. */
|
3579 | bcd4933a | Nathan Froyd | #define tramp mc_pad
|
3580 | bcd4933a | Nathan Froyd | |
3581 | bcd4933a | Nathan Froyd | /* See arch/powerpc/kernel/signal.c. */
|
3582 | bcd4933a | Nathan Froyd | static target_ulong get_sigframe(struct target_sigaction *ka, |
3583 | bcd4933a | Nathan Froyd | CPUState *env, |
3584 | bcd4933a | Nathan Froyd | int frame_size)
|
3585 | bcd4933a | Nathan Froyd | { |
3586 | bcd4933a | Nathan Froyd | target_ulong oldsp, newsp; |
3587 | bcd4933a | Nathan Froyd | |
3588 | bcd4933a | Nathan Froyd | oldsp = env->gpr[1];
|
3589 | bcd4933a | Nathan Froyd | |
3590 | bcd4933a | Nathan Froyd | if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
|
3591 | bcd4933a | Nathan Froyd | (sas_ss_flags(oldsp))) { |
3592 | bcd4933a | Nathan Froyd | oldsp = (target_sigaltstack_used.ss_sp |
3593 | bcd4933a | Nathan Froyd | + target_sigaltstack_used.ss_size); |
3594 | bcd4933a | Nathan Froyd | } |
3595 | bcd4933a | Nathan Froyd | |
3596 | bcd4933a | Nathan Froyd | newsp = (oldsp - frame_size) & ~0xFUL;
|
3597 | bcd4933a | Nathan Froyd | |
3598 | bcd4933a | Nathan Froyd | return newsp;
|
3599 | bcd4933a | Nathan Froyd | } |
3600 | bcd4933a | Nathan Froyd | |
3601 | bcd4933a | Nathan Froyd | static int save_user_regs(CPUState *env, struct target_mcontext *frame, |
3602 | bcd4933a | Nathan Froyd | int sigret)
|
3603 | bcd4933a | Nathan Froyd | { |
3604 | bcd4933a | Nathan Froyd | target_ulong msr = env->msr; |
3605 | bcd4933a | Nathan Froyd | int i;
|
3606 | bcd4933a | Nathan Froyd | target_ulong ccr = 0;
|
3607 | bcd4933a | Nathan Froyd | |
3608 | bcd4933a | Nathan Froyd | /* In general, the kernel attempts to be intelligent about what it
|
3609 | bcd4933a | Nathan Froyd | needs to save for Altivec/FP/SPE registers. We don't care that
|
3610 | bcd4933a | Nathan Froyd | much, so we just go ahead and save everything. */
|
3611 | bcd4933a | Nathan Froyd | |
3612 | bcd4933a | Nathan Froyd | /* Save general registers. */
|
3613 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { |
3614 | bcd4933a | Nathan Froyd | if (__put_user(env->gpr[i], &frame->mc_gregs[i])) {
|
3615 | bcd4933a | Nathan Froyd | return 1; |
3616 | bcd4933a | Nathan Froyd | } |
3617 | bcd4933a | Nathan Froyd | } |
3618 | bcd4933a | Nathan Froyd | if (__put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP])
|
3619 | bcd4933a | Nathan Froyd | || __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]) |
3620 | bcd4933a | Nathan Froyd | || __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]) |
3621 | bcd4933a | Nathan Froyd | || __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER])) |
3622 | bcd4933a | Nathan Froyd | return 1; |
3623 | bcd4933a | Nathan Froyd | |
3624 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { |
3625 | bcd4933a | Nathan Froyd | ccr |= env->crf[i] << (32 - ((i + 1) * 4)); |
3626 | bcd4933a | Nathan Froyd | } |
3627 | bcd4933a | Nathan Froyd | if (__put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]))
|
3628 | bcd4933a | Nathan Froyd | return 1; |
3629 | bcd4933a | Nathan Froyd | |
3630 | bcd4933a | Nathan Froyd | /* Save Altivec registers if necessary. */
|
3631 | bcd4933a | Nathan Froyd | if (env->insns_flags & PPC_ALTIVEC) {
|
3632 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { |
3633 | c227f099 | Anthony Liguori | ppc_avr_t *avr = &env->avr[i]; |
3634 | c227f099 | Anthony Liguori | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; |
3635 | bcd4933a | Nathan Froyd | |
3636 | bcd4933a | Nathan Froyd | if (__put_user(avr->u64[0], &vreg->u64[0]) || |
3637 | bcd4933a | Nathan Froyd | __put_user(avr->u64[1], &vreg->u64[1])) { |
3638 | bcd4933a | Nathan Froyd | return 1; |
3639 | bcd4933a | Nathan Froyd | } |
3640 | bcd4933a | Nathan Froyd | } |
3641 | bcd4933a | Nathan Froyd | /* Set MSR_VR in the saved MSR value to indicate that
|
3642 | bcd4933a | Nathan Froyd | frame->mc_vregs contains valid data. */
|
3643 | bcd4933a | Nathan Froyd | msr |= MSR_VR; |
3644 | bcd4933a | Nathan Froyd | if (__put_user((uint32_t)env->spr[SPR_VRSAVE],
|
3645 | bcd4933a | Nathan Froyd | &frame->mc_vregs.altivec[32].u32[3])) |
3646 | bcd4933a | Nathan Froyd | return 1; |
3647 | bcd4933a | Nathan Froyd | } |
3648 | bcd4933a | Nathan Froyd | |
3649 | bcd4933a | Nathan Froyd | /* Save floating point registers. */
|
3650 | bcd4933a | Nathan Froyd | if (env->insns_flags & PPC_FLOAT) {
|
3651 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { |
3652 | bcd4933a | Nathan Froyd | if (__put_user(env->fpr[i], &frame->mc_fregs[i])) {
|
3653 | bcd4933a | Nathan Froyd | return 1; |
3654 | bcd4933a | Nathan Froyd | } |
3655 | bcd4933a | Nathan Froyd | } |
3656 | bcd4933a | Nathan Froyd | if (__put_user((uint64_t) env->fpscr, &frame->mc_fregs[32])) |
3657 | bcd4933a | Nathan Froyd | return 1; |
3658 | bcd4933a | Nathan Froyd | } |
3659 | bcd4933a | Nathan Froyd | |
3660 | bcd4933a | Nathan Froyd | /* Save SPE registers. The kernel only saves the high half. */
|
3661 | bcd4933a | Nathan Froyd | if (env->insns_flags & PPC_SPE) {
|
3662 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3663 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { |
3664 | bcd4933a | Nathan Froyd | if (__put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i])) { |
3665 | bcd4933a | Nathan Froyd | return 1; |
3666 | bcd4933a | Nathan Froyd | } |
3667 | bcd4933a | Nathan Froyd | } |
3668 | bcd4933a | Nathan Froyd | #else
|
3669 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { |
3670 | bcd4933a | Nathan Froyd | if (__put_user(env->gprh[i], &frame->mc_vregs.spe[i])) {
|
3671 | bcd4933a | Nathan Froyd | return 1; |
3672 | bcd4933a | Nathan Froyd | } |
3673 | bcd4933a | Nathan Froyd | } |
3674 | bcd4933a | Nathan Froyd | #endif
|
3675 | bcd4933a | Nathan Froyd | /* Set MSR_SPE in the saved MSR value to indicate that
|
3676 | bcd4933a | Nathan Froyd | frame->mc_vregs contains valid data. */
|
3677 | bcd4933a | Nathan Froyd | msr |= MSR_SPE; |
3678 | bcd4933a | Nathan Froyd | if (__put_user(env->spe_fscr, &frame->mc_vregs.spe[32])) |
3679 | bcd4933a | Nathan Froyd | return 1; |
3680 | bcd4933a | Nathan Froyd | } |
3681 | bcd4933a | Nathan Froyd | |
3682 | bcd4933a | Nathan Froyd | /* Store MSR. */
|
3683 | bcd4933a | Nathan Froyd | if (__put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]))
|
3684 | bcd4933a | Nathan Froyd | return 1; |
3685 | bcd4933a | Nathan Froyd | |
3686 | bcd4933a | Nathan Froyd | /* Set up the sigreturn trampoline: li r0,sigret; sc. */
|
3687 | bcd4933a | Nathan Froyd | if (sigret) {
|
3688 | bcd4933a | Nathan Froyd | if (__put_user(0x38000000UL | sigret, &frame->tramp[0]) || |
3689 | bcd4933a | Nathan Froyd | __put_user(0x44000002UL, &frame->tramp[1])) { |
3690 | bcd4933a | Nathan Froyd | return 1; |
3691 | bcd4933a | Nathan Froyd | } |
3692 | bcd4933a | Nathan Froyd | } |
3693 | bcd4933a | Nathan Froyd | |
3694 | bcd4933a | Nathan Froyd | return 0; |
3695 | bcd4933a | Nathan Froyd | } |
3696 | bcd4933a | Nathan Froyd | |
3697 | bcd4933a | Nathan Froyd | static int restore_user_regs(CPUState *env, |
3698 | bcd4933a | Nathan Froyd | struct target_mcontext *frame, int sig) |
3699 | bcd4933a | Nathan Froyd | { |
3700 | bcd4933a | Nathan Froyd | target_ulong save_r2 = 0;
|
3701 | bcd4933a | Nathan Froyd | target_ulong msr; |
3702 | bcd4933a | Nathan Froyd | target_ulong ccr; |
3703 | bcd4933a | Nathan Froyd | |
3704 | bcd4933a | Nathan Froyd | int i;
|
3705 | bcd4933a | Nathan Froyd | |
3706 | bcd4933a | Nathan Froyd | if (!sig) {
|
3707 | bcd4933a | Nathan Froyd | save_r2 = env->gpr[2];
|
3708 | bcd4933a | Nathan Froyd | } |
3709 | bcd4933a | Nathan Froyd | |
3710 | bcd4933a | Nathan Froyd | /* Restore general registers. */
|
3711 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { |
3712 | bcd4933a | Nathan Froyd | if (__get_user(env->gpr[i], &frame->mc_gregs[i])) {
|
3713 | bcd4933a | Nathan Froyd | return 1; |
3714 | bcd4933a | Nathan Froyd | } |
3715 | bcd4933a | Nathan Froyd | } |
3716 | bcd4933a | Nathan Froyd | if (__get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP])
|
3717 | bcd4933a | Nathan Froyd | || __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]) |
3718 | bcd4933a | Nathan Froyd | || __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]) |
3719 | bcd4933a | Nathan Froyd | || __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER])) |
3720 | bcd4933a | Nathan Froyd | return 1; |
3721 | bcd4933a | Nathan Froyd | if (__get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]))
|
3722 | bcd4933a | Nathan Froyd | return 1; |
3723 | bcd4933a | Nathan Froyd | |
3724 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->crf); i++) { |
3725 | bcd4933a | Nathan Froyd | env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf; |
3726 | bcd4933a | Nathan Froyd | } |
3727 | bcd4933a | Nathan Froyd | |
3728 | bcd4933a | Nathan Froyd | if (!sig) {
|
3729 | bcd4933a | Nathan Froyd | env->gpr[2] = save_r2;
|
3730 | bcd4933a | Nathan Froyd | } |
3731 | bcd4933a | Nathan Froyd | /* Restore MSR. */
|
3732 | bcd4933a | Nathan Froyd | if (__get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]))
|
3733 | bcd4933a | Nathan Froyd | return 1; |
3734 | bcd4933a | Nathan Froyd | |
3735 | bcd4933a | Nathan Froyd | /* If doing signal return, restore the previous little-endian mode. */
|
3736 | bcd4933a | Nathan Froyd | if (sig)
|
3737 | bcd4933a | Nathan Froyd | env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE); |
3738 | bcd4933a | Nathan Froyd | |
3739 | bcd4933a | Nathan Froyd | /* Restore Altivec registers if necessary. */
|
3740 | bcd4933a | Nathan Froyd | if (env->insns_flags & PPC_ALTIVEC) {
|
3741 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->avr); i++) { |
3742 | c227f099 | Anthony Liguori | ppc_avr_t *avr = &env->avr[i]; |
3743 | c227f099 | Anthony Liguori | ppc_avr_t *vreg = &frame->mc_vregs.altivec[i]; |
3744 | bcd4933a | Nathan Froyd | |
3745 | bcd4933a | Nathan Froyd | if (__get_user(avr->u64[0], &vreg->u64[0]) || |
3746 | bcd4933a | Nathan Froyd | __get_user(avr->u64[1], &vreg->u64[1])) { |
3747 | bcd4933a | Nathan Froyd | return 1; |
3748 | bcd4933a | Nathan Froyd | } |
3749 | bcd4933a | Nathan Froyd | } |
3750 | bcd4933a | Nathan Froyd | /* Set MSR_VEC in the saved MSR value to indicate that
|
3751 | bcd4933a | Nathan Froyd | frame->mc_vregs contains valid data. */
|
3752 | bcd4933a | Nathan Froyd | if (__get_user(env->spr[SPR_VRSAVE],
|
3753 | bcd4933a | Nathan Froyd | (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3]))) |
3754 | bcd4933a | Nathan Froyd | return 1; |
3755 | bcd4933a | Nathan Froyd | } |
3756 | bcd4933a | Nathan Froyd | |
3757 | bcd4933a | Nathan Froyd | /* Restore floating point registers. */
|
3758 | bcd4933a | Nathan Froyd | if (env->insns_flags & PPC_FLOAT) {
|
3759 | bcd4933a | Nathan Froyd | uint64_t fpscr; |
3760 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->fpr); i++) { |
3761 | bcd4933a | Nathan Froyd | if (__get_user(env->fpr[i], &frame->mc_fregs[i])) {
|
3762 | bcd4933a | Nathan Froyd | return 1; |
3763 | bcd4933a | Nathan Froyd | } |
3764 | bcd4933a | Nathan Froyd | } |
3765 | bcd4933a | Nathan Froyd | if (__get_user(fpscr, &frame->mc_fregs[32])) |
3766 | bcd4933a | Nathan Froyd | return 1; |
3767 | bcd4933a | Nathan Froyd | env->fpscr = (uint32_t) fpscr; |
3768 | bcd4933a | Nathan Froyd | } |
3769 | bcd4933a | Nathan Froyd | |
3770 | bcd4933a | Nathan Froyd | /* Save SPE registers. The kernel only saves the high half. */
|
3771 | bcd4933a | Nathan Froyd | if (env->insns_flags & PPC_SPE) {
|
3772 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3773 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->gpr); i++) { |
3774 | bcd4933a | Nathan Froyd | uint32_t hi; |
3775 | bcd4933a | Nathan Froyd | |
3776 | bcd4933a | Nathan Froyd | if (__get_user(hi, &frame->mc_vregs.spe[i])) {
|
3777 | bcd4933a | Nathan Froyd | return 1; |
3778 | bcd4933a | Nathan Froyd | } |
3779 | bcd4933a | Nathan Froyd | env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]);
|
3780 | bcd4933a | Nathan Froyd | } |
3781 | bcd4933a | Nathan Froyd | #else
|
3782 | bcd4933a | Nathan Froyd | for (i = 0; i < ARRAY_SIZE(env->gprh); i++) { |
3783 | bcd4933a | Nathan Froyd | if (__get_user(env->gprh[i], &frame->mc_vregs.spe[i])) {
|
3784 | bcd4933a | Nathan Froyd | return 1; |
3785 | bcd4933a | Nathan Froyd | } |
3786 | bcd4933a | Nathan Froyd | } |
3787 | bcd4933a | Nathan Froyd | #endif
|
3788 | bcd4933a | Nathan Froyd | if (__get_user(env->spe_fscr, &frame->mc_vregs.spe[32])) |
3789 | bcd4933a | Nathan Froyd | return 1; |
3790 | bcd4933a | Nathan Froyd | } |
3791 | bcd4933a | Nathan Froyd | |
3792 | bcd4933a | Nathan Froyd | return 0; |
3793 | bcd4933a | Nathan Froyd | } |
3794 | bcd4933a | Nathan Froyd | |
3795 | bcd4933a | Nathan Froyd | static void setup_frame(int sig, struct target_sigaction *ka, |
3796 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
3797 | bcd4933a | Nathan Froyd | { |
3798 | bcd4933a | Nathan Froyd | struct target_sigframe *frame;
|
3799 | bcd4933a | Nathan Froyd | struct target_sigcontext *sc;
|
3800 | bcd4933a | Nathan Froyd | target_ulong frame_addr, newsp; |
3801 | bcd4933a | Nathan Froyd | int err = 0; |
3802 | bcd4933a | Nathan Froyd | int signal;
|
3803 | bcd4933a | Nathan Froyd | |
3804 | bcd4933a | Nathan Froyd | frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
3805 | bcd4933a | Nathan Froyd | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
3806 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3807 | bcd4933a | Nathan Froyd | sc = &frame->sctx; |
3808 | bcd4933a | Nathan Froyd | |
3809 | bcd4933a | Nathan Froyd | signal = current_exec_domain_sig(sig); |
3810 | bcd4933a | Nathan Froyd | |
3811 | bcd4933a | Nathan Froyd | err |= __put_user(h2g(ka->_sa_handler), &sc->handler); |
3812 | bcd4933a | Nathan Froyd | err |= __put_user(set->sig[0], &sc->oldmask);
|
3813 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3814 | bcd4933a | Nathan Froyd | err |= __put_user(set->sig[0] >> 32, &sc->_unused[3]); |
3815 | bcd4933a | Nathan Froyd | #else
|
3816 | bcd4933a | Nathan Froyd | err |= __put_user(set->sig[1], &sc->_unused[3]); |
3817 | bcd4933a | Nathan Froyd | #endif
|
3818 | bcd4933a | Nathan Froyd | err |= __put_user(h2g(&frame->mctx), &sc->regs); |
3819 | bcd4933a | Nathan Froyd | err |= __put_user(sig, &sc->signal); |
3820 | bcd4933a | Nathan Froyd | |
3821 | bcd4933a | Nathan Froyd | /* Save user regs. */
|
3822 | bcd4933a | Nathan Froyd | err |= save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn); |
3823 | bcd4933a | Nathan Froyd | |
3824 | bcd4933a | Nathan Froyd | /* The kernel checks for the presence of a VDSO here. We don't
|
3825 | bcd4933a | Nathan Froyd | emulate a vdso, so use a sigreturn system call. */
|
3826 | bcd4933a | Nathan Froyd | env->lr = (target_ulong) h2g(frame->mctx.tramp); |
3827 | bcd4933a | Nathan Froyd | |
3828 | bcd4933a | Nathan Froyd | /* Turn off all fp exceptions. */
|
3829 | bcd4933a | Nathan Froyd | env->fpscr = 0;
|
3830 | bcd4933a | Nathan Froyd | |
3831 | bcd4933a | Nathan Froyd | /* Create a stack frame for the caller of the handler. */
|
3832 | bcd4933a | Nathan Froyd | newsp = frame_addr - SIGNAL_FRAMESIZE; |
3833 | bcd4933a | Nathan Froyd | err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
|
3834 | bcd4933a | Nathan Froyd | |
3835 | bcd4933a | Nathan Froyd | if (err)
|
3836 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3837 | bcd4933a | Nathan Froyd | |
3838 | bcd4933a | Nathan Froyd | /* Set up registers for signal handler. */
|
3839 | bcd4933a | Nathan Froyd | env->gpr[1] = newsp;
|
3840 | bcd4933a | Nathan Froyd | env->gpr[3] = signal;
|
3841 | bcd4933a | Nathan Froyd | env->gpr[4] = (target_ulong) h2g(sc);
|
3842 | bcd4933a | Nathan Froyd | env->nip = (target_ulong) ka->_sa_handler; |
3843 | bcd4933a | Nathan Froyd | /* Signal handlers are entered in big-endian mode. */
|
3844 | bcd4933a | Nathan Froyd | env->msr &= ~MSR_LE; |
3845 | bcd4933a | Nathan Froyd | |
3846 | bcd4933a | Nathan Froyd | unlock_user_struct(frame, frame_addr, 1);
|
3847 | bcd4933a | Nathan Froyd | return;
|
3848 | bcd4933a | Nathan Froyd | |
3849 | bcd4933a | Nathan Froyd | sigsegv:
|
3850 | bcd4933a | Nathan Froyd | unlock_user_struct(frame, frame_addr, 1);
|
3851 | bcd4933a | Nathan Froyd | if (logfile)
|
3852 | bcd4933a | Nathan Froyd | fprintf (logfile, "segfaulting from setup_frame\n");
|
3853 | bcd4933a | Nathan Froyd | force_sig(SIGSEGV); |
3854 | bcd4933a | Nathan Froyd | } |
3855 | bcd4933a | Nathan Froyd | |
3856 | bcd4933a | Nathan Froyd | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
3857 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
3858 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
3859 | bcd4933a | Nathan Froyd | { |
3860 | bcd4933a | Nathan Froyd | struct target_rt_sigframe *rt_sf;
|
3861 | bcd4933a | Nathan Froyd | struct target_mcontext *frame;
|
3862 | bcd4933a | Nathan Froyd | target_ulong rt_sf_addr, newsp = 0;
|
3863 | bcd4933a | Nathan Froyd | int i, err = 0; |
3864 | bcd4933a | Nathan Froyd | int signal;
|
3865 | bcd4933a | Nathan Froyd | |
3866 | bcd4933a | Nathan Froyd | rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
|
3867 | bcd4933a | Nathan Froyd | if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1)) |
3868 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3869 | bcd4933a | Nathan Froyd | |
3870 | bcd4933a | Nathan Froyd | signal = current_exec_domain_sig(sig); |
3871 | bcd4933a | Nathan Froyd | |
3872 | bcd4933a | Nathan Froyd | err |= copy_siginfo_to_user(&rt_sf->info, info); |
3873 | bcd4933a | Nathan Froyd | |
3874 | bcd4933a | Nathan Froyd | err |= __put_user(0, &rt_sf->uc.uc_flags);
|
3875 | bcd4933a | Nathan Froyd | err |= __put_user(0, &rt_sf->uc.uc_link);
|
3876 | bcd4933a | Nathan Froyd | err |= __put_user((target_ulong)target_sigaltstack_used.ss_sp, |
3877 | bcd4933a | Nathan Froyd | &rt_sf->uc.uc_stack.ss_sp); |
3878 | bcd4933a | Nathan Froyd | err |= __put_user(sas_ss_flags(env->gpr[1]),
|
3879 | bcd4933a | Nathan Froyd | &rt_sf->uc.uc_stack.ss_flags); |
3880 | bcd4933a | Nathan Froyd | err |= __put_user(target_sigaltstack_used.ss_size, |
3881 | bcd4933a | Nathan Froyd | &rt_sf->uc.uc_stack.ss_size); |
3882 | bcd4933a | Nathan Froyd | err |= __put_user(h2g (&rt_sf->uc.uc_mcontext), |
3883 | bcd4933a | Nathan Froyd | &rt_sf->uc.uc_regs); |
3884 | bcd4933a | Nathan Froyd | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
3885 | bcd4933a | Nathan Froyd | err |= __put_user(set->sig[i], &rt_sf->uc.uc_sigmask.sig[i]); |
3886 | bcd4933a | Nathan Froyd | } |
3887 | bcd4933a | Nathan Froyd | |
3888 | bcd4933a | Nathan Froyd | frame = &rt_sf->uc.uc_mcontext; |
3889 | bcd4933a | Nathan Froyd | err |= save_user_regs(env, frame, TARGET_NR_rt_sigreturn); |
3890 | bcd4933a | Nathan Froyd | |
3891 | bcd4933a | Nathan Froyd | /* The kernel checks for the presence of a VDSO here. We don't
|
3892 | bcd4933a | Nathan Froyd | emulate a vdso, so use a sigreturn system call. */
|
3893 | bcd4933a | Nathan Froyd | env->lr = (target_ulong) h2g(frame->tramp); |
3894 | bcd4933a | Nathan Froyd | |
3895 | bcd4933a | Nathan Froyd | /* Turn off all fp exceptions. */
|
3896 | bcd4933a | Nathan Froyd | env->fpscr = 0;
|
3897 | bcd4933a | Nathan Froyd | |
3898 | bcd4933a | Nathan Froyd | /* Create a stack frame for the caller of the handler. */
|
3899 | bcd4933a | Nathan Froyd | newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
|
3900 | bcd4933a | Nathan Froyd | err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
|
3901 | bcd4933a | Nathan Froyd | |
3902 | bcd4933a | Nathan Froyd | if (err)
|
3903 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3904 | bcd4933a | Nathan Froyd | |
3905 | bcd4933a | Nathan Froyd | /* Set up registers for signal handler. */
|
3906 | bcd4933a | Nathan Froyd | env->gpr[1] = newsp;
|
3907 | bcd4933a | Nathan Froyd | env->gpr[3] = (target_ulong) signal;
|
3908 | bcd4933a | Nathan Froyd | env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
|
3909 | bcd4933a | Nathan Froyd | env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
|
3910 | bcd4933a | Nathan Froyd | env->gpr[6] = (target_ulong) h2g(rt_sf);
|
3911 | bcd4933a | Nathan Froyd | env->nip = (target_ulong) ka->_sa_handler; |
3912 | bcd4933a | Nathan Froyd | /* Signal handlers are entered in big-endian mode. */
|
3913 | bcd4933a | Nathan Froyd | env->msr &= ~MSR_LE; |
3914 | bcd4933a | Nathan Froyd | |
3915 | bcd4933a | Nathan Froyd | unlock_user_struct(rt_sf, rt_sf_addr, 1);
|
3916 | bcd4933a | Nathan Froyd | return;
|
3917 | bcd4933a | Nathan Froyd | |
3918 | bcd4933a | Nathan Froyd | sigsegv:
|
3919 | bcd4933a | Nathan Froyd | unlock_user_struct(rt_sf, rt_sf_addr, 1);
|
3920 | bcd4933a | Nathan Froyd | if (logfile)
|
3921 | bcd4933a | Nathan Froyd | fprintf (logfile, "segfaulting from setup_rt_frame\n");
|
3922 | bcd4933a | Nathan Froyd | force_sig(SIGSEGV); |
3923 | bcd4933a | Nathan Froyd | |
3924 | bcd4933a | Nathan Froyd | } |
3925 | bcd4933a | Nathan Froyd | |
3926 | bcd4933a | Nathan Froyd | long do_sigreturn(CPUState *env)
|
3927 | bcd4933a | Nathan Froyd | { |
3928 | bcd4933a | Nathan Froyd | struct target_sigcontext *sc = NULL; |
3929 | bcd4933a | Nathan Froyd | struct target_mcontext *sr = NULL; |
3930 | bcd4933a | Nathan Froyd | target_ulong sr_addr, sc_addr; |
3931 | bcd4933a | Nathan Froyd | sigset_t blocked; |
3932 | c227f099 | Anthony Liguori | target_sigset_t set; |
3933 | bcd4933a | Nathan Froyd | |
3934 | bcd4933a | Nathan Froyd | sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE;
|
3935 | bcd4933a | Nathan Froyd | if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) |
3936 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3937 | bcd4933a | Nathan Froyd | |
3938 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3939 | bcd4933a | Nathan Froyd | set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32); |
3940 | bcd4933a | Nathan Froyd | #else
|
3941 | bcd4933a | Nathan Froyd | if(__get_user(set.sig[0], &sc->oldmask) || |
3942 | bcd4933a | Nathan Froyd | __get_user(set.sig[1], &sc->_unused[3])) |
3943 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3944 | bcd4933a | Nathan Froyd | #endif
|
3945 | bcd4933a | Nathan Froyd | target_to_host_sigset_internal(&blocked, &set); |
3946 | bcd4933a | Nathan Froyd | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
3947 | bcd4933a | Nathan Froyd | |
3948 | bcd4933a | Nathan Froyd | if (__get_user(sr_addr, &sc->regs))
|
3949 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3950 | bcd4933a | Nathan Froyd | if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1)) |
3951 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3952 | bcd4933a | Nathan Froyd | if (restore_user_regs(env, sr, 1)) |
3953 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3954 | bcd4933a | Nathan Froyd | |
3955 | bcd4933a | Nathan Froyd | unlock_user_struct(sr, sr_addr, 1);
|
3956 | bcd4933a | Nathan Froyd | unlock_user_struct(sc, sc_addr, 1);
|
3957 | bcd4933a | Nathan Froyd | return -TARGET_QEMU_ESIGRETURN;
|
3958 | bcd4933a | Nathan Froyd | |
3959 | bcd4933a | Nathan Froyd | sigsegv:
|
3960 | bcd4933a | Nathan Froyd | unlock_user_struct(sr, sr_addr, 1);
|
3961 | bcd4933a | Nathan Froyd | unlock_user_struct(sc, sc_addr, 1);
|
3962 | bcd4933a | Nathan Froyd | if (logfile)
|
3963 | bcd4933a | Nathan Froyd | fprintf (logfile, "segfaulting from do_sigreturn\n");
|
3964 | bcd4933a | Nathan Froyd | force_sig(SIGSEGV); |
3965 | bcd4933a | Nathan Froyd | return 0; |
3966 | bcd4933a | Nathan Froyd | } |
3967 | bcd4933a | Nathan Froyd | |
3968 | bcd4933a | Nathan Froyd | /* See arch/powerpc/kernel/signal_32.c. */
|
3969 | bcd4933a | Nathan Froyd | static int do_setcontext(struct target_ucontext *ucp, CPUState *env, int sig) |
3970 | bcd4933a | Nathan Froyd | { |
3971 | bcd4933a | Nathan Froyd | struct target_mcontext *mcp;
|
3972 | bcd4933a | Nathan Froyd | target_ulong mcp_addr; |
3973 | bcd4933a | Nathan Froyd | sigset_t blocked; |
3974 | c227f099 | Anthony Liguori | target_sigset_t set; |
3975 | bcd4933a | Nathan Froyd | |
3976 | bcd4933a | Nathan Froyd | if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, uc_sigmask), |
3977 | bcd4933a | Nathan Froyd | sizeof (set)))
|
3978 | bcd4933a | Nathan Froyd | return 1; |
3979 | bcd4933a | Nathan Froyd | |
3980 | bcd4933a | Nathan Froyd | #if defined(TARGET_PPC64)
|
3981 | bcd4933a | Nathan Froyd | fprintf (stderr, "do_setcontext: not implemented\n");
|
3982 | bcd4933a | Nathan Froyd | return 0; |
3983 | bcd4933a | Nathan Froyd | #else
|
3984 | bcd4933a | Nathan Froyd | if (__get_user(mcp_addr, &ucp->uc_regs))
|
3985 | bcd4933a | Nathan Froyd | return 1; |
3986 | bcd4933a | Nathan Froyd | |
3987 | bcd4933a | Nathan Froyd | if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1)) |
3988 | bcd4933a | Nathan Froyd | return 1; |
3989 | bcd4933a | Nathan Froyd | |
3990 | bcd4933a | Nathan Froyd | target_to_host_sigset_internal(&blocked, &set); |
3991 | bcd4933a | Nathan Froyd | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
3992 | bcd4933a | Nathan Froyd | if (restore_user_regs(env, mcp, sig))
|
3993 | bcd4933a | Nathan Froyd | goto sigsegv;
|
3994 | bcd4933a | Nathan Froyd | |
3995 | bcd4933a | Nathan Froyd | unlock_user_struct(mcp, mcp_addr, 1);
|
3996 | bcd4933a | Nathan Froyd | return 0; |
3997 | bcd4933a | Nathan Froyd | |
3998 | bcd4933a | Nathan Froyd | sigsegv:
|
3999 | bcd4933a | Nathan Froyd | unlock_user_struct(mcp, mcp_addr, 1);
|
4000 | bcd4933a | Nathan Froyd | return 1; |
4001 | bcd4933a | Nathan Froyd | #endif
|
4002 | bcd4933a | Nathan Froyd | } |
4003 | bcd4933a | Nathan Froyd | |
4004 | bcd4933a | Nathan Froyd | long do_rt_sigreturn(CPUState *env)
|
4005 | bcd4933a | Nathan Froyd | { |
4006 | bcd4933a | Nathan Froyd | struct target_rt_sigframe *rt_sf = NULL; |
4007 | bcd4933a | Nathan Froyd | target_ulong rt_sf_addr; |
4008 | bcd4933a | Nathan Froyd | |
4009 | bcd4933a | Nathan Froyd | rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16; |
4010 | bcd4933a | Nathan Froyd | if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1)) |
4011 | bcd4933a | Nathan Froyd | goto sigsegv;
|
4012 | bcd4933a | Nathan Froyd | |
4013 | bcd4933a | Nathan Froyd | if (do_setcontext(&rt_sf->uc, env, 1)) |
4014 | bcd4933a | Nathan Froyd | goto sigsegv;
|
4015 | bcd4933a | Nathan Froyd | |
4016 | bcd4933a | Nathan Froyd | do_sigaltstack(rt_sf_addr |
4017 | bcd4933a | Nathan Froyd | + offsetof(struct target_rt_sigframe, uc.uc_stack),
|
4018 | bcd4933a | Nathan Froyd | 0, env->gpr[1]); |
4019 | bcd4933a | Nathan Froyd | |
4020 | bcd4933a | Nathan Froyd | unlock_user_struct(rt_sf, rt_sf_addr, 1);
|
4021 | bcd4933a | Nathan Froyd | return -TARGET_QEMU_ESIGRETURN;
|
4022 | bcd4933a | Nathan Froyd | |
4023 | bcd4933a | Nathan Froyd | sigsegv:
|
4024 | bcd4933a | Nathan Froyd | unlock_user_struct(rt_sf, rt_sf_addr, 1);
|
4025 | bcd4933a | Nathan Froyd | if (logfile)
|
4026 | bcd4933a | Nathan Froyd | fprintf (logfile, "segfaulting from do_rt_sigreturn\n");
|
4027 | bcd4933a | Nathan Froyd | force_sig(SIGSEGV); |
4028 | bcd4933a | Nathan Froyd | return 0; |
4029 | bcd4933a | Nathan Froyd | } |
4030 | bcd4933a | Nathan Froyd | |
4031 | 492a8744 | Laurent Vivier | #elif defined(TARGET_M68K)
|
4032 | 492a8744 | Laurent Vivier | |
4033 | 492a8744 | Laurent Vivier | struct target_sigcontext {
|
4034 | 492a8744 | Laurent Vivier | abi_ulong sc_mask; |
4035 | 492a8744 | Laurent Vivier | abi_ulong sc_usp; |
4036 | 492a8744 | Laurent Vivier | abi_ulong sc_d0; |
4037 | 492a8744 | Laurent Vivier | abi_ulong sc_d1; |
4038 | 492a8744 | Laurent Vivier | abi_ulong sc_a0; |
4039 | 492a8744 | Laurent Vivier | abi_ulong sc_a1; |
4040 | 492a8744 | Laurent Vivier | unsigned short sc_sr; |
4041 | 492a8744 | Laurent Vivier | abi_ulong sc_pc; |
4042 | 492a8744 | Laurent Vivier | }; |
4043 | 492a8744 | Laurent Vivier | |
4044 | 492a8744 | Laurent Vivier | struct target_sigframe
|
4045 | 492a8744 | Laurent Vivier | { |
4046 | 492a8744 | Laurent Vivier | abi_ulong pretcode; |
4047 | 492a8744 | Laurent Vivier | int sig;
|
4048 | 492a8744 | Laurent Vivier | int code;
|
4049 | 492a8744 | Laurent Vivier | abi_ulong psc; |
4050 | 492a8744 | Laurent Vivier | char retcode[8]; |
4051 | 492a8744 | Laurent Vivier | abi_ulong extramask[TARGET_NSIG_WORDS-1];
|
4052 | 492a8744 | Laurent Vivier | struct target_sigcontext sc;
|
4053 | 492a8744 | Laurent Vivier | }; |
4054 | 7181155d | Laurent Vivier | |
4055 | c227f099 | Anthony Liguori | typedef int target_greg_t; |
4056 | 7181155d | Laurent Vivier | #define TARGET_NGREG 18 |
4057 | c227f099 | Anthony Liguori | typedef target_greg_t target_gregset_t[TARGET_NGREG];
|
4058 | 7181155d | Laurent Vivier | |
4059 | 7181155d | Laurent Vivier | typedef struct target_fpregset { |
4060 | 7181155d | Laurent Vivier | int f_fpcntl[3]; |
4061 | 7181155d | Laurent Vivier | int f_fpregs[8*3]; |
4062 | c227f099 | Anthony Liguori | } target_fpregset_t; |
4063 | 7181155d | Laurent Vivier | |
4064 | 7181155d | Laurent Vivier | struct target_mcontext {
|
4065 | 7181155d | Laurent Vivier | int version;
|
4066 | c227f099 | Anthony Liguori | target_gregset_t gregs; |
4067 | c227f099 | Anthony Liguori | target_fpregset_t fpregs; |
4068 | 7181155d | Laurent Vivier | }; |
4069 | 7181155d | Laurent Vivier | |
4070 | 7181155d | Laurent Vivier | #define TARGET_MCONTEXT_VERSION 2 |
4071 | 7181155d | Laurent Vivier | |
4072 | 7181155d | Laurent Vivier | struct target_ucontext {
|
4073 | 7181155d | Laurent Vivier | abi_ulong uc_flags; |
4074 | 7181155d | Laurent Vivier | abi_ulong uc_link; |
4075 | c227f099 | Anthony Liguori | target_stack_t uc_stack; |
4076 | 7181155d | Laurent Vivier | struct target_mcontext uc_mcontext;
|
4077 | 7181155d | Laurent Vivier | abi_long uc_filler[80];
|
4078 | c227f099 | Anthony Liguori | target_sigset_t uc_sigmask; |
4079 | 7181155d | Laurent Vivier | }; |
4080 | 7181155d | Laurent Vivier | |
4081 | 7181155d | Laurent Vivier | struct target_rt_sigframe
|
4082 | 7181155d | Laurent Vivier | { |
4083 | 7181155d | Laurent Vivier | abi_ulong pretcode; |
4084 | 7181155d | Laurent Vivier | int sig;
|
4085 | 7181155d | Laurent Vivier | abi_ulong pinfo; |
4086 | 7181155d | Laurent Vivier | abi_ulong puc; |
4087 | 7181155d | Laurent Vivier | char retcode[8]; |
4088 | 7181155d | Laurent Vivier | struct target_siginfo info;
|
4089 | 7181155d | Laurent Vivier | struct target_ucontext uc;
|
4090 | 7181155d | Laurent Vivier | }; |
4091 | 492a8744 | Laurent Vivier | |
4092 | 492a8744 | Laurent Vivier | static int |
4093 | 492a8744 | Laurent Vivier | setup_sigcontext(struct target_sigcontext *sc, CPUState *env, abi_ulong mask)
|
4094 | 492a8744 | Laurent Vivier | { |
4095 | 492a8744 | Laurent Vivier | int err = 0; |
4096 | 492a8744 | Laurent Vivier | |
4097 | 492a8744 | Laurent Vivier | err |= __put_user(mask, &sc->sc_mask); |
4098 | 492a8744 | Laurent Vivier | err |= __put_user(env->aregs[7], &sc->sc_usp);
|
4099 | 492a8744 | Laurent Vivier | err |= __put_user(env->dregs[0], &sc->sc_d0);
|
4100 | 492a8744 | Laurent Vivier | err |= __put_user(env->dregs[1], &sc->sc_d1);
|
4101 | 492a8744 | Laurent Vivier | err |= __put_user(env->aregs[0], &sc->sc_a0);
|
4102 | 492a8744 | Laurent Vivier | err |= __put_user(env->aregs[1], &sc->sc_a1);
|
4103 | 492a8744 | Laurent Vivier | err |= __put_user(env->sr, &sc->sc_sr); |
4104 | 492a8744 | Laurent Vivier | err |= __put_user(env->pc, &sc->sc_pc); |
4105 | 492a8744 | Laurent Vivier | |
4106 | 492a8744 | Laurent Vivier | return err;
|
4107 | 492a8744 | Laurent Vivier | } |
4108 | 492a8744 | Laurent Vivier | |
4109 | 492a8744 | Laurent Vivier | static int |
4110 | 492a8744 | Laurent Vivier | restore_sigcontext(CPUState *env, struct target_sigcontext *sc, int *pd0) |
4111 | 492a8744 | Laurent Vivier | { |
4112 | 492a8744 | Laurent Vivier | int err = 0; |
4113 | 492a8744 | Laurent Vivier | int temp;
|
4114 | 492a8744 | Laurent Vivier | |
4115 | 492a8744 | Laurent Vivier | err |= __get_user(env->aregs[7], &sc->sc_usp);
|
4116 | 492a8744 | Laurent Vivier | err |= __get_user(env->dregs[1], &sc->sc_d1);
|
4117 | 492a8744 | Laurent Vivier | err |= __get_user(env->aregs[0], &sc->sc_a0);
|
4118 | 492a8744 | Laurent Vivier | err |= __get_user(env->aregs[1], &sc->sc_a1);
|
4119 | 492a8744 | Laurent Vivier | err |= __get_user(env->pc, &sc->sc_pc); |
4120 | 492a8744 | Laurent Vivier | err |= __get_user(temp, &sc->sc_sr); |
4121 | 492a8744 | Laurent Vivier | env->sr = (env->sr & 0xff00) | (temp & 0xff); |
4122 | 492a8744 | Laurent Vivier | |
4123 | 492a8744 | Laurent Vivier | *pd0 = tswapl(sc->sc_d0); |
4124 | 492a8744 | Laurent Vivier | |
4125 | 492a8744 | Laurent Vivier | return err;
|
4126 | 492a8744 | Laurent Vivier | } |
4127 | 492a8744 | Laurent Vivier | |
4128 | 492a8744 | Laurent Vivier | /*
|
4129 | 492a8744 | Laurent Vivier | * Determine which stack to use..
|
4130 | 492a8744 | Laurent Vivier | */
|
4131 | 492a8744 | Laurent Vivier | static inline abi_ulong |
4132 | 492a8744 | Laurent Vivier | get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size)
|
4133 | 492a8744 | Laurent Vivier | { |
4134 | 492a8744 | Laurent Vivier | unsigned long sp; |
4135 | 492a8744 | Laurent Vivier | |
4136 | 492a8744 | Laurent Vivier | sp = regs->aregs[7];
|
4137 | 492a8744 | Laurent Vivier | |
4138 | 492a8744 | Laurent Vivier | /* This is the X/Open sanctioned signal stack switching. */
|
4139 | 492a8744 | Laurent Vivier | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
4140 | 492a8744 | Laurent Vivier | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
4141 | 492a8744 | Laurent Vivier | } |
4142 | 492a8744 | Laurent Vivier | |
4143 | 492a8744 | Laurent Vivier | return ((sp - frame_size) & -8UL); |
4144 | 492a8744 | Laurent Vivier | } |
4145 | 492a8744 | Laurent Vivier | |
4146 | 492a8744 | Laurent Vivier | static void setup_frame(int sig, struct target_sigaction *ka, |
4147 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
4148 | 492a8744 | Laurent Vivier | { |
4149 | 492a8744 | Laurent Vivier | struct target_sigframe *frame;
|
4150 | 492a8744 | Laurent Vivier | abi_ulong frame_addr; |
4151 | 492a8744 | Laurent Vivier | abi_ulong retcode_addr; |
4152 | 492a8744 | Laurent Vivier | abi_ulong sc_addr; |
4153 | 492a8744 | Laurent Vivier | int err = 0; |
4154 | 492a8744 | Laurent Vivier | int i;
|
4155 | 492a8744 | Laurent Vivier | |
4156 | 492a8744 | Laurent Vivier | frame_addr = get_sigframe(ka, env, sizeof *frame);
|
4157 | 492a8744 | Laurent Vivier | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
4158 | 492a8744 | Laurent Vivier | goto give_sigsegv;
|
4159 | 492a8744 | Laurent Vivier | |
4160 | 492a8744 | Laurent Vivier | err |= __put_user(sig, &frame->sig); |
4161 | 492a8744 | Laurent Vivier | |
4162 | 492a8744 | Laurent Vivier | sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
|
4163 | 492a8744 | Laurent Vivier | err |= __put_user(sc_addr, &frame->psc); |
4164 | 492a8744 | Laurent Vivier | |
4165 | 492a8744 | Laurent Vivier | err |= setup_sigcontext(&frame->sc, env, set->sig[0]);
|
4166 | 492a8744 | Laurent Vivier | if (err)
|
4167 | 492a8744 | Laurent Vivier | goto give_sigsegv;
|
4168 | 492a8744 | Laurent Vivier | |
4169 | 492a8744 | Laurent Vivier | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
4170 | 492a8744 | Laurent Vivier | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
4171 | 492a8744 | Laurent Vivier | goto give_sigsegv;
|
4172 | 492a8744 | Laurent Vivier | } |
4173 | 492a8744 | Laurent Vivier | |
4174 | 492a8744 | Laurent Vivier | /* Set up to return from userspace. */
|
4175 | 492a8744 | Laurent Vivier | |
4176 | 492a8744 | Laurent Vivier | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
|
4177 | 492a8744 | Laurent Vivier | err |= __put_user(retcode_addr, &frame->pretcode); |
4178 | 492a8744 | Laurent Vivier | |
4179 | 492a8744 | Laurent Vivier | /* moveq #,d0; trap #0 */
|
4180 | 492a8744 | Laurent Vivier | |
4181 | 492a8744 | Laurent Vivier | err |= __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16), |
4182 | 492a8744 | Laurent Vivier | (long *)(frame->retcode));
|
4183 | 492a8744 | Laurent Vivier | |
4184 | 492a8744 | Laurent Vivier | if (err)
|
4185 | 492a8744 | Laurent Vivier | goto give_sigsegv;
|
4186 | 492a8744 | Laurent Vivier | |
4187 | 492a8744 | Laurent Vivier | /* Set up to return from userspace */
|
4188 | 492a8744 | Laurent Vivier | |
4189 | 492a8744 | Laurent Vivier | env->aregs[7] = frame_addr;
|
4190 | 492a8744 | Laurent Vivier | env->pc = ka->_sa_handler; |
4191 | 492a8744 | Laurent Vivier | |
4192 | 492a8744 | Laurent Vivier | unlock_user_struct(frame, frame_addr, 1);
|
4193 | 492a8744 | Laurent Vivier | return;
|
4194 | 492a8744 | Laurent Vivier | |
4195 | 492a8744 | Laurent Vivier | give_sigsegv:
|
4196 | 492a8744 | Laurent Vivier | unlock_user_struct(frame, frame_addr, 1);
|
4197 | 492a8744 | Laurent Vivier | force_sig(SIGSEGV); |
4198 | 492a8744 | Laurent Vivier | } |
4199 | 492a8744 | Laurent Vivier | |
4200 | 7181155d | Laurent Vivier | static inline int target_rt_setup_ucontext(struct target_ucontext *uc, |
4201 | 7181155d | Laurent Vivier | CPUState *env) |
4202 | 7181155d | Laurent Vivier | { |
4203 | c227f099 | Anthony Liguori | target_greg_t *gregs = uc->uc_mcontext.gregs; |
4204 | 7181155d | Laurent Vivier | int err;
|
4205 | 7181155d | Laurent Vivier | |
4206 | 7181155d | Laurent Vivier | err = __put_user(TARGET_MCONTEXT_VERSION, &uc->uc_mcontext.version); |
4207 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[0], &gregs[0]); |
4208 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[1], &gregs[1]); |
4209 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[2], &gregs[2]); |
4210 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[3], &gregs[3]); |
4211 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[4], &gregs[4]); |
4212 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[5], &gregs[5]); |
4213 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[6], &gregs[6]); |
4214 | 7181155d | Laurent Vivier | err |= __put_user(env->dregs[7], &gregs[7]); |
4215 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[0], &gregs[8]); |
4216 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[1], &gregs[9]); |
4217 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[2], &gregs[10]); |
4218 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[3], &gregs[11]); |
4219 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[4], &gregs[12]); |
4220 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[5], &gregs[13]); |
4221 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[6], &gregs[14]); |
4222 | 7181155d | Laurent Vivier | err |= __put_user(env->aregs[7], &gregs[15]); |
4223 | 7181155d | Laurent Vivier | err |= __put_user(env->pc, &gregs[16]);
|
4224 | 7181155d | Laurent Vivier | err |= __put_user(env->sr, &gregs[17]);
|
4225 | 7181155d | Laurent Vivier | |
4226 | 7181155d | Laurent Vivier | return err;
|
4227 | 7181155d | Laurent Vivier | } |
4228 | 7181155d | Laurent Vivier | |
4229 | 7181155d | Laurent Vivier | static inline int target_rt_restore_ucontext(CPUState *env, |
4230 | 7181155d | Laurent Vivier | struct target_ucontext *uc,
|
4231 | 7181155d | Laurent Vivier | int *pd0)
|
4232 | 7181155d | Laurent Vivier | { |
4233 | 7181155d | Laurent Vivier | int temp;
|
4234 | 7181155d | Laurent Vivier | int err;
|
4235 | c227f099 | Anthony Liguori | target_greg_t *gregs = uc->uc_mcontext.gregs; |
4236 | 7181155d | Laurent Vivier | |
4237 | 7181155d | Laurent Vivier | err = __get_user(temp, &uc->uc_mcontext.version); |
4238 | 7181155d | Laurent Vivier | if (temp != TARGET_MCONTEXT_VERSION)
|
4239 | 7181155d | Laurent Vivier | goto badframe;
|
4240 | 7181155d | Laurent Vivier | |
4241 | 7181155d | Laurent Vivier | /* restore passed registers */
|
4242 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[0], &gregs[0]); |
4243 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[1], &gregs[1]); |
4244 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[2], &gregs[2]); |
4245 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[3], &gregs[3]); |
4246 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[4], &gregs[4]); |
4247 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[5], &gregs[5]); |
4248 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[6], &gregs[6]); |
4249 | 7181155d | Laurent Vivier | err |= __get_user(env->dregs[7], &gregs[7]); |
4250 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[0], &gregs[8]); |
4251 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[1], &gregs[9]); |
4252 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[2], &gregs[10]); |
4253 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[3], &gregs[11]); |
4254 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[4], &gregs[12]); |
4255 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[5], &gregs[13]); |
4256 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[6], &gregs[14]); |
4257 | 7181155d | Laurent Vivier | err |= __get_user(env->aregs[7], &gregs[15]); |
4258 | 7181155d | Laurent Vivier | err |= __get_user(env->pc, &gregs[16]);
|
4259 | 7181155d | Laurent Vivier | err |= __get_user(temp, &gregs[17]);
|
4260 | 7181155d | Laurent Vivier | env->sr = (env->sr & 0xff00) | (temp & 0xff); |
4261 | 7181155d | Laurent Vivier | |
4262 | 7181155d | Laurent Vivier | *pd0 = env->dregs[0];
|
4263 | 7181155d | Laurent Vivier | return err;
|
4264 | 7181155d | Laurent Vivier | |
4265 | 7181155d | Laurent Vivier | badframe:
|
4266 | 7181155d | Laurent Vivier | return 1; |
4267 | 7181155d | Laurent Vivier | } |
4268 | 7181155d | Laurent Vivier | |
4269 | 492a8744 | Laurent Vivier | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
4270 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
4271 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
4272 | 492a8744 | Laurent Vivier | { |
4273 | 7181155d | Laurent Vivier | struct target_rt_sigframe *frame;
|
4274 | 7181155d | Laurent Vivier | abi_ulong frame_addr; |
4275 | 7181155d | Laurent Vivier | abi_ulong retcode_addr; |
4276 | 7181155d | Laurent Vivier | abi_ulong info_addr; |
4277 | 7181155d | Laurent Vivier | abi_ulong uc_addr; |
4278 | 7181155d | Laurent Vivier | int err = 0; |
4279 | 7181155d | Laurent Vivier | int i;
|
4280 | 7181155d | Laurent Vivier | |
4281 | 7181155d | Laurent Vivier | frame_addr = get_sigframe(ka, env, sizeof *frame);
|
4282 | 7181155d | Laurent Vivier | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
4283 | 7181155d | Laurent Vivier | goto give_sigsegv;
|
4284 | 7181155d | Laurent Vivier | |
4285 | 7181155d | Laurent Vivier | err |= __put_user(sig, &frame->sig); |
4286 | 7181155d | Laurent Vivier | |
4287 | 7181155d | Laurent Vivier | info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
|
4288 | 7181155d | Laurent Vivier | err |= __put_user(info_addr, &frame->pinfo); |
4289 | 7181155d | Laurent Vivier | |
4290 | 7181155d | Laurent Vivier | uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
|
4291 | 7181155d | Laurent Vivier | err |= __put_user(uc_addr, &frame->puc); |
4292 | 7181155d | Laurent Vivier | |
4293 | 7181155d | Laurent Vivier | err |= copy_siginfo_to_user(&frame->info, info); |
4294 | 7181155d | Laurent Vivier | |
4295 | 7181155d | Laurent Vivier | /* Create the ucontext */
|
4296 | 7181155d | Laurent Vivier | |
4297 | 7181155d | Laurent Vivier | err |= __put_user(0, &frame->uc.uc_flags);
|
4298 | 7181155d | Laurent Vivier | err |= __put_user(0, &frame->uc.uc_link);
|
4299 | 7181155d | Laurent Vivier | err |= __put_user(target_sigaltstack_used.ss_sp, |
4300 | 7181155d | Laurent Vivier | &frame->uc.uc_stack.ss_sp); |
4301 | 7181155d | Laurent Vivier | err |= __put_user(sas_ss_flags(env->aregs[7]),
|
4302 | 7181155d | Laurent Vivier | &frame->uc.uc_stack.ss_flags); |
4303 | 7181155d | Laurent Vivier | err |= __put_user(target_sigaltstack_used.ss_size, |
4304 | 7181155d | Laurent Vivier | &frame->uc.uc_stack.ss_size); |
4305 | 7181155d | Laurent Vivier | err |= target_rt_setup_ucontext(&frame->uc, env); |
4306 | 7181155d | Laurent Vivier | |
4307 | 7181155d | Laurent Vivier | if (err)
|
4308 | 7181155d | Laurent Vivier | goto give_sigsegv;
|
4309 | 7181155d | Laurent Vivier | |
4310 | 7181155d | Laurent Vivier | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
4311 | 7181155d | Laurent Vivier | if (__put_user(set->sig[i], &frame->uc.uc_sigmask.sig[i]))
|
4312 | 7181155d | Laurent Vivier | goto give_sigsegv;
|
4313 | 7181155d | Laurent Vivier | } |
4314 | 7181155d | Laurent Vivier | |
4315 | 7181155d | Laurent Vivier | /* Set up to return from userspace. */
|
4316 | 7181155d | Laurent Vivier | |
4317 | 7181155d | Laurent Vivier | retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
|
4318 | 7181155d | Laurent Vivier | err |= __put_user(retcode_addr, &frame->pretcode); |
4319 | 7181155d | Laurent Vivier | |
4320 | 7181155d | Laurent Vivier | /* moveq #,d0; notb d0; trap #0 */
|
4321 | 7181155d | Laurent Vivier | |
4322 | 7181155d | Laurent Vivier | err |= __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16), |
4323 | 7181155d | Laurent Vivier | (long *)(frame->retcode + 0)); |
4324 | 7181155d | Laurent Vivier | err |= __put_user(0x4e40, (short *)(frame->retcode + 4)); |
4325 | 7181155d | Laurent Vivier | |
4326 | 7181155d | Laurent Vivier | if (err)
|
4327 | 7181155d | Laurent Vivier | goto give_sigsegv;
|
4328 | 7181155d | Laurent Vivier | |
4329 | 7181155d | Laurent Vivier | /* Set up to return from userspace */
|
4330 | 7181155d | Laurent Vivier | |
4331 | 7181155d | Laurent Vivier | env->aregs[7] = frame_addr;
|
4332 | 7181155d | Laurent Vivier | env->pc = ka->_sa_handler; |
4333 | 7181155d | Laurent Vivier | |
4334 | 7181155d | Laurent Vivier | unlock_user_struct(frame, frame_addr, 1);
|
4335 | 7181155d | Laurent Vivier | return;
|
4336 | 7181155d | Laurent Vivier | |
4337 | 7181155d | Laurent Vivier | give_sigsegv:
|
4338 | 7181155d | Laurent Vivier | unlock_user_struct(frame, frame_addr, 1);
|
4339 | 7181155d | Laurent Vivier | force_sig(SIGSEGV); |
4340 | 492a8744 | Laurent Vivier | } |
4341 | 492a8744 | Laurent Vivier | |
4342 | 492a8744 | Laurent Vivier | long do_sigreturn(CPUState *env)
|
4343 | 492a8744 | Laurent Vivier | { |
4344 | 492a8744 | Laurent Vivier | struct target_sigframe *frame;
|
4345 | 492a8744 | Laurent Vivier | abi_ulong frame_addr = env->aregs[7] - 4; |
4346 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
4347 | 492a8744 | Laurent Vivier | sigset_t set; |
4348 | 492a8744 | Laurent Vivier | int d0, i;
|
4349 | 492a8744 | Laurent Vivier | |
4350 | 492a8744 | Laurent Vivier | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
4351 | 492a8744 | Laurent Vivier | goto badframe;
|
4352 | 492a8744 | Laurent Vivier | |
4353 | 492a8744 | Laurent Vivier | /* set blocked signals */
|
4354 | 492a8744 | Laurent Vivier | |
4355 | 492a8744 | Laurent Vivier | if (__get_user(target_set.sig[0], &frame->sc.sc_mask)) |
4356 | 492a8744 | Laurent Vivier | goto badframe;
|
4357 | 492a8744 | Laurent Vivier | |
4358 | 492a8744 | Laurent Vivier | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
4359 | 492a8744 | Laurent Vivier | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) |
4360 | 492a8744 | Laurent Vivier | goto badframe;
|
4361 | 492a8744 | Laurent Vivier | } |
4362 | 492a8744 | Laurent Vivier | |
4363 | 492a8744 | Laurent Vivier | target_to_host_sigset_internal(&set, &target_set); |
4364 | 492a8744 | Laurent Vivier | sigprocmask(SIG_SETMASK, &set, NULL);
|
4365 | 492a8744 | Laurent Vivier | |
4366 | 492a8744 | Laurent Vivier | /* restore registers */
|
4367 | 492a8744 | Laurent Vivier | |
4368 | 492a8744 | Laurent Vivier | if (restore_sigcontext(env, &frame->sc, &d0))
|
4369 | 492a8744 | Laurent Vivier | goto badframe;
|
4370 | 492a8744 | Laurent Vivier | |
4371 | 492a8744 | Laurent Vivier | unlock_user_struct(frame, frame_addr, 0);
|
4372 | 492a8744 | Laurent Vivier | return d0;
|
4373 | 492a8744 | Laurent Vivier | |
4374 | 492a8744 | Laurent Vivier | badframe:
|
4375 | 492a8744 | Laurent Vivier | unlock_user_struct(frame, frame_addr, 0);
|
4376 | 492a8744 | Laurent Vivier | force_sig(TARGET_SIGSEGV); |
4377 | 492a8744 | Laurent Vivier | return 0; |
4378 | 492a8744 | Laurent Vivier | } |
4379 | 492a8744 | Laurent Vivier | |
4380 | 492a8744 | Laurent Vivier | long do_rt_sigreturn(CPUState *env)
|
4381 | 492a8744 | Laurent Vivier | { |
4382 | 7181155d | Laurent Vivier | struct target_rt_sigframe *frame;
|
4383 | 7181155d | Laurent Vivier | abi_ulong frame_addr = env->aregs[7] - 4; |
4384 | c227f099 | Anthony Liguori | target_sigset_t target_set; |
4385 | 7181155d | Laurent Vivier | sigset_t set; |
4386 | 7181155d | Laurent Vivier | int d0;
|
4387 | 7181155d | Laurent Vivier | |
4388 | 7181155d | Laurent Vivier | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
4389 | 7181155d | Laurent Vivier | goto badframe;
|
4390 | 7181155d | Laurent Vivier | |
4391 | 7181155d | Laurent Vivier | target_to_host_sigset_internal(&set, &target_set); |
4392 | 7181155d | Laurent Vivier | sigprocmask(SIG_SETMASK, &set, NULL);
|
4393 | 7181155d | Laurent Vivier | |
4394 | 7181155d | Laurent Vivier | /* restore registers */
|
4395 | 7181155d | Laurent Vivier | |
4396 | 7181155d | Laurent Vivier | if (target_rt_restore_ucontext(env, &frame->uc, &d0))
|
4397 | 7181155d | Laurent Vivier | goto badframe;
|
4398 | 7181155d | Laurent Vivier | |
4399 | 7181155d | Laurent Vivier | if (do_sigaltstack(frame_addr +
|
4400 | 7181155d | Laurent Vivier | offsetof(struct target_rt_sigframe, uc.uc_stack),
|
4401 | 7181155d | Laurent Vivier | 0, get_sp_from_cpustate(env)) == -EFAULT)
|
4402 | 7181155d | Laurent Vivier | goto badframe;
|
4403 | 7181155d | Laurent Vivier | |
4404 | 7181155d | Laurent Vivier | unlock_user_struct(frame, frame_addr, 0);
|
4405 | 7181155d | Laurent Vivier | return d0;
|
4406 | 7181155d | Laurent Vivier | |
4407 | 7181155d | Laurent Vivier | badframe:
|
4408 | 7181155d | Laurent Vivier | unlock_user_struct(frame, frame_addr, 0);
|
4409 | 7181155d | Laurent Vivier | force_sig(TARGET_SIGSEGV); |
4410 | 7181155d | Laurent Vivier | return 0; |
4411 | 492a8744 | Laurent Vivier | } |
4412 | 492a8744 | Laurent Vivier | |
4413 | b346ff46 | bellard | #else
|
4414 | b346ff46 | bellard | |
4415 | 624f7979 | pbrook | static void setup_frame(int sig, struct target_sigaction *ka, |
4416 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
4417 | b346ff46 | bellard | { |
4418 | b346ff46 | bellard | fprintf(stderr, "setup_frame: not implemented\n");
|
4419 | b346ff46 | bellard | } |
4420 | b346ff46 | bellard | |
4421 | 624f7979 | pbrook | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
4422 | c227f099 | Anthony Liguori | target_siginfo_t *info, |
4423 | c227f099 | Anthony Liguori | target_sigset_t *set, CPUState *env) |
4424 | b346ff46 | bellard | { |
4425 | b346ff46 | bellard | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
4426 | b346ff46 | bellard | } |
4427 | b346ff46 | bellard | |
4428 | b346ff46 | bellard | long do_sigreturn(CPUState *env)
|
4429 | b346ff46 | bellard | { |
4430 | b346ff46 | bellard | fprintf(stderr, "do_sigreturn: not implemented\n");
|
4431 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
4432 | b346ff46 | bellard | } |
4433 | b346ff46 | bellard | |
4434 | b346ff46 | bellard | long do_rt_sigreturn(CPUState *env)
|
4435 | b346ff46 | bellard | { |
4436 | b346ff46 | bellard | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
4437 | f8b0aa25 | bellard | return -TARGET_ENOSYS;
|
4438 | b346ff46 | bellard | } |
4439 | b346ff46 | bellard | |
4440 | 66fb9763 | bellard | #endif
|
4441 | 66fb9763 | bellard | |
4442 | 624f7979 | pbrook | void process_pending_signals(CPUState *cpu_env)
|
4443 | 66fb9763 | bellard | { |
4444 | 66fb9763 | bellard | int sig;
|
4445 | 992f48a0 | blueswir1 | abi_ulong handler; |
4446 | 9de5e440 | bellard | sigset_t set, old_set; |
4447 | c227f099 | Anthony Liguori | target_sigset_t target_old_set; |
4448 | 624f7979 | pbrook | struct emulated_sigtable *k;
|
4449 | 624f7979 | pbrook | struct target_sigaction *sa;
|
4450 | 66fb9763 | bellard | struct sigqueue *q;
|
4451 | 624f7979 | pbrook | TaskState *ts = cpu_env->opaque; |
4452 | 3b46e624 | ths | |
4453 | 624f7979 | pbrook | if (!ts->signal_pending)
|
4454 | 31e31b8a | bellard | return;
|
4455 | 31e31b8a | bellard | |
4456 | 624f7979 | pbrook | /* FIXME: This is not threadsafe. */
|
4457 | 624f7979 | pbrook | k = ts->sigtab; |
4458 | 66fb9763 | bellard | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
4459 | 66fb9763 | bellard | if (k->pending)
|
4460 | 31e31b8a | bellard | goto handle_signal;
|
4461 | 66fb9763 | bellard | k++; |
4462 | 31e31b8a | bellard | } |
4463 | 31e31b8a | bellard | /* if no signal is pending, just return */
|
4464 | 624f7979 | pbrook | ts->signal_pending = 0;
|
4465 | 31e31b8a | bellard | return;
|
4466 | 66fb9763 | bellard | |
4467 | 31e31b8a | bellard | handle_signal:
|
4468 | 66fb9763 | bellard | #ifdef DEBUG_SIGNAL
|
4469 | bc8a22cc | bellard | fprintf(stderr, "qemu: process signal %d\n", sig);
|
4470 | 66fb9763 | bellard | #endif
|
4471 | 66fb9763 | bellard | /* dequeue signal */
|
4472 | 66fb9763 | bellard | q = k->first; |
4473 | 66fb9763 | bellard | k->first = q->next; |
4474 | 66fb9763 | bellard | if (!k->first)
|
4475 | 66fb9763 | bellard | k->pending = 0;
|
4476 | 3b46e624 | ths | |
4477 | 1fddef4b | bellard | sig = gdb_handlesig (cpu_env, sig); |
4478 | 1fddef4b | bellard | if (!sig) {
|
4479 | ca587a8e | aurel32 | sa = NULL;
|
4480 | ca587a8e | aurel32 | handler = TARGET_SIG_IGN; |
4481 | ca587a8e | aurel32 | } else {
|
4482 | ca587a8e | aurel32 | sa = &sigact_table[sig - 1];
|
4483 | ca587a8e | aurel32 | handler = sa->_sa_handler; |
4484 | 1fddef4b | bellard | } |
4485 | 66fb9763 | bellard | |
4486 | 66fb9763 | bellard | if (handler == TARGET_SIG_DFL) {
|
4487 | ca587a8e | aurel32 | /* default handler : ignore some signal. The other are job control or fatal */
|
4488 | ca587a8e | aurel32 | if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
|
4489 | ca587a8e | aurel32 | kill(getpid(),SIGSTOP); |
4490 | ca587a8e | aurel32 | } else if (sig != TARGET_SIGCHLD && |
4491 | ca587a8e | aurel32 | sig != TARGET_SIGURG && |
4492 | ca587a8e | aurel32 | sig != TARGET_SIGWINCH && |
4493 | ca587a8e | aurel32 | sig != TARGET_SIGCONT) { |
4494 | 66fb9763 | bellard | force_sig(sig); |
4495 | 66fb9763 | bellard | } |
4496 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_IGN) { |
4497 | 66fb9763 | bellard | /* ignore sig */
|
4498 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_ERR) { |
4499 | 66fb9763 | bellard | force_sig(sig); |
4500 | 66fb9763 | bellard | } else {
|
4501 | 9de5e440 | bellard | /* compute the blocked signals during the handler execution */
|
4502 | 624f7979 | pbrook | target_to_host_sigset(&set, &sa->sa_mask); |
4503 | 9de5e440 | bellard | /* SA_NODEFER indicates that the current signal should not be
|
4504 | 9de5e440 | bellard | blocked during the handler */
|
4505 | 624f7979 | pbrook | if (!(sa->sa_flags & TARGET_SA_NODEFER))
|
4506 | 9de5e440 | bellard | sigaddset(&set, target_to_host_signal(sig)); |
4507 | 3b46e624 | ths | |
4508 | 9de5e440 | bellard | /* block signals in the handler using Linux */
|
4509 | 9de5e440 | bellard | sigprocmask(SIG_BLOCK, &set, &old_set); |
4510 | 9de5e440 | bellard | /* save the previous blocked signal state to restore it at the
|
4511 | 9de5e440 | bellard | end of the signal execution (see do_sigreturn) */
|
4512 | 9231944d | bellard | host_to_target_sigset_internal(&target_old_set, &old_set); |
4513 | 9de5e440 | bellard | |
4514 | bc8a22cc | bellard | /* if the CPU is in VM86 mode, we restore the 32 bit values */
|
4515 | 84409ddb | j_mayer | #if defined(TARGET_I386) && !defined(TARGET_X86_64)
|
4516 | bc8a22cc | bellard | { |
4517 | bc8a22cc | bellard | CPUX86State *env = cpu_env; |
4518 | bc8a22cc | bellard | if (env->eflags & VM_MASK)
|
4519 | bc8a22cc | bellard | save_v86_state(env); |
4520 | bc8a22cc | bellard | } |
4521 | bc8a22cc | bellard | #endif
|
4522 | 9de5e440 | bellard | /* prepare the stack frame of the virtual CPU */
|
4523 | 624f7979 | pbrook | if (sa->sa_flags & TARGET_SA_SIGINFO)
|
4524 | 624f7979 | pbrook | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); |
4525 | 66fb9763 | bellard | else
|
4526 | 624f7979 | pbrook | setup_frame(sig, sa, &target_old_set, cpu_env); |
4527 | 624f7979 | pbrook | if (sa->sa_flags & TARGET_SA_RESETHAND)
|
4528 | 624f7979 | pbrook | sa->_sa_handler = TARGET_SIG_DFL; |
4529 | 31e31b8a | bellard | } |
4530 | 66fb9763 | bellard | if (q != &k->info)
|
4531 | 624f7979 | pbrook | free_sigqueue(cpu_env, q); |
4532 | 66fb9763 | bellard | } |