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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 | 31e31b8a | bellard | * along with this program; if not, write to the Free Software
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18 | 31e31b8a | bellard | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 | 31e31b8a | bellard | */
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20 | 31e31b8a | bellard | #include <stdlib.h> |
21 | 31e31b8a | bellard | #include <stdio.h> |
22 | 66fb9763 | bellard | #include <string.h> |
23 | 31e31b8a | bellard | #include <stdarg.h> |
24 | 2677e107 | bellard | #include <unistd.h> |
25 | 31e31b8a | bellard | #include <signal.h> |
26 | 66fb9763 | bellard | #include <errno.h> |
27 | 31e31b8a | bellard | #include <sys/ucontext.h> |
28 | 31e31b8a | bellard | |
29 | 3ef693a0 | bellard | #include "qemu.h" |
30 | 992f48a0 | blueswir1 | #include "target_signal.h" |
31 | 66fb9763 | bellard | |
32 | 66fb9763 | bellard | //#define DEBUG_SIGNAL
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33 | 66fb9763 | bellard | |
34 | 66fb9763 | bellard | #define MAX_SIGQUEUE_SIZE 1024 |
35 | 66fb9763 | bellard | |
36 | 66fb9763 | bellard | struct sigqueue {
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37 | 66fb9763 | bellard | struct sigqueue *next;
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38 | 9de5e440 | bellard | target_siginfo_t info; |
39 | 66fb9763 | bellard | }; |
40 | 31e31b8a | bellard | |
41 | 31e31b8a | bellard | struct emulated_sigaction {
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42 | 31e31b8a | bellard | struct target_sigaction sa;
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43 | 66fb9763 | bellard | int pending; /* true if signal is pending */ |
44 | 66fb9763 | bellard | struct sigqueue *first;
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45 | 66fb9763 | bellard | struct sigqueue info; /* in order to always have memory for the |
46 | 66fb9763 | bellard | first signal, we put it here */
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47 | 31e31b8a | bellard | }; |
48 | 31e31b8a | bellard | |
49 | a04e134a | ths | struct target_sigaltstack target_sigaltstack_used = {
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50 | a04e134a | ths | .ss_sp = 0,
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51 | a04e134a | ths | .ss_size = 0,
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52 | a04e134a | ths | .ss_flags = TARGET_SS_DISABLE, |
53 | a04e134a | ths | }; |
54 | a04e134a | ths | |
55 | 66fb9763 | bellard | static struct emulated_sigaction sigact_table[TARGET_NSIG]; |
56 | 66fb9763 | bellard | static struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ |
57 | 66fb9763 | bellard | static struct sigqueue *first_free; /* first free siginfo queue entry */ |
58 | 66fb9763 | bellard | static int signal_pending; /* non zero if a signal may be pending */ |
59 | 31e31b8a | bellard | |
60 | 5fafdf24 | ths | static void host_signal_handler(int host_signum, siginfo_t *info, |
61 | 66fb9763 | bellard | void *puc);
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62 | 66fb9763 | bellard | |
63 | 9e5f5284 | bellard | static uint8_t host_to_target_signal_table[65] = { |
64 | 9e5f5284 | bellard | [SIGHUP] = TARGET_SIGHUP, |
65 | 9e5f5284 | bellard | [SIGINT] = TARGET_SIGINT, |
66 | 9e5f5284 | bellard | [SIGQUIT] = TARGET_SIGQUIT, |
67 | 9e5f5284 | bellard | [SIGILL] = TARGET_SIGILL, |
68 | 9e5f5284 | bellard | [SIGTRAP] = TARGET_SIGTRAP, |
69 | 9e5f5284 | bellard | [SIGABRT] = TARGET_SIGABRT, |
70 | 01e3b763 | bellard | /* [SIGIOT] = TARGET_SIGIOT,*/
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71 | 9e5f5284 | bellard | [SIGBUS] = TARGET_SIGBUS, |
72 | 9e5f5284 | bellard | [SIGFPE] = TARGET_SIGFPE, |
73 | 9e5f5284 | bellard | [SIGKILL] = TARGET_SIGKILL, |
74 | 9e5f5284 | bellard | [SIGUSR1] = TARGET_SIGUSR1, |
75 | 9e5f5284 | bellard | [SIGSEGV] = TARGET_SIGSEGV, |
76 | 9e5f5284 | bellard | [SIGUSR2] = TARGET_SIGUSR2, |
77 | 9e5f5284 | bellard | [SIGPIPE] = TARGET_SIGPIPE, |
78 | 9e5f5284 | bellard | [SIGALRM] = TARGET_SIGALRM, |
79 | 9e5f5284 | bellard | [SIGTERM] = TARGET_SIGTERM, |
80 | 9e5f5284 | bellard | #ifdef SIGSTKFLT
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81 | 9e5f5284 | bellard | [SIGSTKFLT] = TARGET_SIGSTKFLT, |
82 | 9e5f5284 | bellard | #endif
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83 | 9e5f5284 | bellard | [SIGCHLD] = TARGET_SIGCHLD, |
84 | 9e5f5284 | bellard | [SIGCONT] = TARGET_SIGCONT, |
85 | 9e5f5284 | bellard | [SIGSTOP] = TARGET_SIGSTOP, |
86 | 9e5f5284 | bellard | [SIGTSTP] = TARGET_SIGTSTP, |
87 | 9e5f5284 | bellard | [SIGTTIN] = TARGET_SIGTTIN, |
88 | 9e5f5284 | bellard | [SIGTTOU] = TARGET_SIGTTOU, |
89 | 9e5f5284 | bellard | [SIGURG] = TARGET_SIGURG, |
90 | 9e5f5284 | bellard | [SIGXCPU] = TARGET_SIGXCPU, |
91 | 9e5f5284 | bellard | [SIGXFSZ] = TARGET_SIGXFSZ, |
92 | 9e5f5284 | bellard | [SIGVTALRM] = TARGET_SIGVTALRM, |
93 | 9e5f5284 | bellard | [SIGPROF] = TARGET_SIGPROF, |
94 | 9e5f5284 | bellard | [SIGWINCH] = TARGET_SIGWINCH, |
95 | 9e5f5284 | bellard | [SIGIO] = TARGET_SIGIO, |
96 | 9e5f5284 | bellard | [SIGPWR] = TARGET_SIGPWR, |
97 | 9e5f5284 | bellard | [SIGSYS] = TARGET_SIGSYS, |
98 | 9e5f5284 | bellard | /* next signals stay the same */
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99 | 9e5f5284 | bellard | }; |
100 | 9e5f5284 | bellard | static uint8_t target_to_host_signal_table[65]; |
101 | 9e5f5284 | bellard | |
102 | a04e134a | ths | static inline int on_sig_stack(unsigned long sp) |
103 | a04e134a | ths | { |
104 | a04e134a | ths | return (sp - target_sigaltstack_used.ss_sp
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105 | a04e134a | ths | < target_sigaltstack_used.ss_size); |
106 | a04e134a | ths | } |
107 | a04e134a | ths | |
108 | a04e134a | ths | static inline int sas_ss_flags(unsigned long sp) |
109 | a04e134a | ths | { |
110 | a04e134a | ths | return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE |
111 | a04e134a | ths | : on_sig_stack(sp) ? SS_ONSTACK : 0);
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112 | a04e134a | ths | } |
113 | a04e134a | ths | |
114 | 31e31b8a | bellard | static inline int host_to_target_signal(int sig) |
115 | 31e31b8a | bellard | { |
116 | 9e5f5284 | bellard | return host_to_target_signal_table[sig];
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117 | 31e31b8a | bellard | } |
118 | 31e31b8a | bellard | |
119 | 31e31b8a | bellard | static inline int target_to_host_signal(int sig) |
120 | 31e31b8a | bellard | { |
121 | 9e5f5284 | bellard | return target_to_host_signal_table[sig];
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122 | 31e31b8a | bellard | } |
123 | 31e31b8a | bellard | |
124 | 5fafdf24 | ths | static void host_to_target_sigset_internal(target_sigset_t *d, |
125 | 9231944d | bellard | const sigset_t *s)
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126 | 66fb9763 | bellard | { |
127 | 66fb9763 | bellard | int i;
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128 | 9e5f5284 | bellard | unsigned long sigmask; |
129 | 9e5f5284 | bellard | uint32_t target_sigmask; |
130 | 3b46e624 | ths | |
131 | 9e5f5284 | bellard | sigmask = ((unsigned long *)s)[0]; |
132 | 9e5f5284 | bellard | target_sigmask = 0;
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133 | 9e5f5284 | bellard | for(i = 0; i < 32; i++) { |
134 | 5fafdf24 | ths | if (sigmask & (1 << i)) |
135 | 9e5f5284 | bellard | target_sigmask |= 1 << (host_to_target_signal(i + 1) - 1); |
136 | 9e5f5284 | bellard | } |
137 | 992f48a0 | blueswir1 | #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 32 |
138 | 9231944d | bellard | d->sig[0] = target_sigmask;
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139 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) { |
140 | 9231944d | bellard | d->sig[i] = ((unsigned long *)s)[i]; |
141 | 66fb9763 | bellard | } |
142 | 992f48a0 | blueswir1 | #elif TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 && TARGET_NSIG_WORDS == 2 |
143 | 9231944d | bellard | d->sig[0] = target_sigmask;
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144 | 9231944d | bellard | d->sig[1] = sigmask >> 32; |
145 | 9e5f5284 | bellard | #else
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146 | 459a4017 | bellard | /* XXX: do it */
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147 | 9e5f5284 | bellard | #endif
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148 | 66fb9763 | bellard | } |
149 | 66fb9763 | bellard | |
150 | 9231944d | bellard | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
151 | 9231944d | bellard | { |
152 | 9231944d | bellard | target_sigset_t d1; |
153 | 9231944d | bellard | int i;
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154 | 9231944d | bellard | |
155 | 9231944d | bellard | host_to_target_sigset_internal(&d1, s); |
156 | 9231944d | bellard | for(i = 0;i < TARGET_NSIG_WORDS; i++) |
157 | 53a5960a | pbrook | d->sig[i] = tswapl(d1.sig[i]); |
158 | 9231944d | bellard | } |
159 | 9231944d | bellard | |
160 | 9231944d | bellard | void target_to_host_sigset_internal(sigset_t *d, const target_sigset_t *s) |
161 | 66fb9763 | bellard | { |
162 | 66fb9763 | bellard | int i;
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163 | 9e5f5284 | bellard | unsigned long sigmask; |
164 | 992f48a0 | blueswir1 | abi_ulong target_sigmask; |
165 | 9e5f5284 | bellard | |
166 | 9231944d | bellard | target_sigmask = s->sig[0];
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167 | 9e5f5284 | bellard | sigmask = 0;
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168 | 9e5f5284 | bellard | for(i = 0; i < 32; i++) { |
169 | 5fafdf24 | ths | if (target_sigmask & (1 << i)) |
170 | 9e5f5284 | bellard | sigmask |= 1 << (target_to_host_signal(i + 1) - 1); |
171 | 9e5f5284 | bellard | } |
172 | 992f48a0 | blueswir1 | #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 32 |
173 | 9e5f5284 | bellard | ((unsigned long *)d)[0] = sigmask; |
174 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) { |
175 | 9231944d | bellard | ((unsigned long *)d)[i] = s->sig[i]; |
176 | 66fb9763 | bellard | } |
177 | 992f48a0 | blueswir1 | #elif TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 && TARGET_NSIG_WORDS == 2 |
178 | 9231944d | bellard | ((unsigned long *)d)[0] = sigmask | ((unsigned long)(s->sig[1]) << 32); |
179 | 9e5f5284 | bellard | #else
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180 | 459a4017 | bellard | /* XXX: do it */
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181 | 992f48a0 | blueswir1 | #endif /* TARGET_ABI_BITS */ |
182 | 66fb9763 | bellard | } |
183 | 66fb9763 | bellard | |
184 | 9231944d | bellard | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
185 | 9231944d | bellard | { |
186 | 9231944d | bellard | target_sigset_t s1; |
187 | 9231944d | bellard | int i;
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188 | 9231944d | bellard | |
189 | 9231944d | bellard | for(i = 0;i < TARGET_NSIG_WORDS; i++) |
190 | 53a5960a | pbrook | s1.sig[i] = tswapl(s->sig[i]); |
191 | 9231944d | bellard | target_to_host_sigset_internal(d, &s1); |
192 | 9231944d | bellard | } |
193 | 3b46e624 | ths | |
194 | 992f48a0 | blueswir1 | void host_to_target_old_sigset(abi_ulong *old_sigset,
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195 | 66fb9763 | bellard | const sigset_t *sigset)
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196 | 66fb9763 | bellard | { |
197 | 9e5f5284 | bellard | target_sigset_t d; |
198 | 9e5f5284 | bellard | host_to_target_sigset(&d, sigset); |
199 | 9e5f5284 | bellard | *old_sigset = d.sig[0];
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200 | 66fb9763 | bellard | } |
201 | 66fb9763 | bellard | |
202 | 5fafdf24 | ths | void target_to_host_old_sigset(sigset_t *sigset,
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203 | 992f48a0 | blueswir1 | const abi_ulong *old_sigset)
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204 | 66fb9763 | bellard | { |
205 | 9e5f5284 | bellard | target_sigset_t d; |
206 | 9e5f5284 | bellard | int i;
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207 | 9e5f5284 | bellard | |
208 | 9e5f5284 | bellard | d.sig[0] = *old_sigset;
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209 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) |
210 | 9e5f5284 | bellard | d.sig[i] = 0;
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211 | 9e5f5284 | bellard | target_to_host_sigset(sigset, &d); |
212 | 66fb9763 | bellard | } |
213 | 66fb9763 | bellard | |
214 | 9de5e440 | bellard | /* siginfo conversion */
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215 | 9de5e440 | bellard | |
216 | 5fafdf24 | ths | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
217 | 9de5e440 | bellard | const siginfo_t *info)
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218 | 66fb9763 | bellard | { |
219 | 9de5e440 | bellard | int sig;
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220 | 9de5e440 | bellard | sig = host_to_target_signal(info->si_signo); |
221 | 9de5e440 | bellard | tinfo->si_signo = sig; |
222 | 9de5e440 | bellard | tinfo->si_errno = 0;
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223 | 9de5e440 | bellard | tinfo->si_code = 0;
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224 | 5fafdf24 | ths | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
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225 | 447db213 | bellard | sig == SIGBUS || sig == SIGTRAP) { |
226 | 9de5e440 | bellard | /* should never come here, but who knows. The information for
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227 | 9de5e440 | bellard | the target is irrelevant */
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228 | 9de5e440 | bellard | tinfo->_sifields._sigfault._addr = 0;
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229 | 7f7f7c84 | ths | } else if (sig == SIGIO) { |
230 | 7f7f7c84 | ths | tinfo->_sifields._sigpoll._fd = info->si_fd; |
231 | 9de5e440 | bellard | } else if (sig >= TARGET_SIGRTMIN) { |
232 | 9de5e440 | bellard | tinfo->_sifields._rt._pid = info->si_pid; |
233 | 9de5e440 | bellard | tinfo->_sifields._rt._uid = info->si_uid; |
234 | 9de5e440 | bellard | /* XXX: potential problem if 64 bit */
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235 | 5fafdf24 | ths | tinfo->_sifields._rt._sigval.sival_ptr = |
236 | 459a4017 | bellard | (abi_ulong)(unsigned long)info->si_value.sival_ptr; |
237 | 9de5e440 | bellard | } |
238 | 9de5e440 | bellard | } |
239 | 9de5e440 | bellard | |
240 | 5fafdf24 | ths | static void tswap_siginfo(target_siginfo_t *tinfo, |
241 | 9de5e440 | bellard | const target_siginfo_t *info)
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242 | 9de5e440 | bellard | { |
243 | 9de5e440 | bellard | int sig;
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244 | 9de5e440 | bellard | sig = info->si_signo; |
245 | 9de5e440 | bellard | tinfo->si_signo = tswap32(sig); |
246 | 66fb9763 | bellard | tinfo->si_errno = tswap32(info->si_errno); |
247 | 66fb9763 | bellard | tinfo->si_code = tswap32(info->si_code); |
248 | 5fafdf24 | ths | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
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249 | 447db213 | bellard | sig == SIGBUS || sig == SIGTRAP) { |
250 | 5fafdf24 | ths | tinfo->_sifields._sigfault._addr = |
251 | 9de5e440 | bellard | tswapl(info->_sifields._sigfault._addr); |
252 | 7f7f7c84 | ths | } else if (sig == SIGIO) { |
253 | 7f7f7c84 | ths | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); |
254 | 9de5e440 | bellard | } else if (sig >= TARGET_SIGRTMIN) { |
255 | 9de5e440 | bellard | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); |
256 | 9de5e440 | bellard | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); |
257 | 5fafdf24 | ths | tinfo->_sifields._rt._sigval.sival_ptr = |
258 | 9de5e440 | bellard | tswapl(info->_sifields._rt._sigval.sival_ptr); |
259 | 9de5e440 | bellard | } |
260 | 9de5e440 | bellard | } |
261 | 9de5e440 | bellard | |
262 | 9de5e440 | bellard | |
263 | 9de5e440 | bellard | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
264 | 9de5e440 | bellard | { |
265 | 9de5e440 | bellard | host_to_target_siginfo_noswap(tinfo, info); |
266 | 9de5e440 | bellard | tswap_siginfo(tinfo, tinfo); |
267 | 66fb9763 | bellard | } |
268 | 66fb9763 | bellard | |
269 | 9de5e440 | bellard | /* XXX: we support only POSIX RT signals are used. */
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270 | aa1f17c1 | ths | /* XXX: find a solution for 64 bit (additional malloced data is needed) */
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271 | 9de5e440 | bellard | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
272 | 66fb9763 | bellard | { |
273 | 66fb9763 | bellard | info->si_signo = tswap32(tinfo->si_signo); |
274 | 66fb9763 | bellard | info->si_errno = tswap32(tinfo->si_errno); |
275 | 66fb9763 | bellard | info->si_code = tswap32(tinfo->si_code); |
276 | 9de5e440 | bellard | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
277 | 9de5e440 | bellard | info->si_uid = tswap32(tinfo->_sifields._rt._uid); |
278 | 5fafdf24 | ths | info->si_value.sival_ptr = |
279 | 459a4017 | bellard | (void *)(long)tswapl(tinfo->_sifields._rt._sigval.sival_ptr); |
280 | 66fb9763 | bellard | } |
281 | 66fb9763 | bellard | |
282 | 31e31b8a | bellard | void signal_init(void) |
283 | 31e31b8a | bellard | { |
284 | 31e31b8a | bellard | struct sigaction act;
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285 | 9e5f5284 | bellard | int i, j;
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286 | 31e31b8a | bellard | |
287 | 9e5f5284 | bellard | /* generate signal conversion tables */
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288 | 9e5f5284 | bellard | for(i = 1; i <= 64; i++) { |
289 | 9e5f5284 | bellard | if (host_to_target_signal_table[i] == 0) |
290 | 9e5f5284 | bellard | host_to_target_signal_table[i] = i; |
291 | 9e5f5284 | bellard | } |
292 | 9e5f5284 | bellard | for(i = 1; i <= 64; i++) { |
293 | 9e5f5284 | bellard | j = host_to_target_signal_table[i]; |
294 | 9e5f5284 | bellard | target_to_host_signal_table[j] = i; |
295 | 9e5f5284 | bellard | } |
296 | 3b46e624 | ths | |
297 | 9de5e440 | bellard | /* set all host signal handlers. ALL signals are blocked during
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298 | 9de5e440 | bellard | the handlers to serialize them. */
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299 | 9de5e440 | bellard | sigfillset(&act.sa_mask); |
300 | 31e31b8a | bellard | act.sa_flags = SA_SIGINFO; |
301 | 31e31b8a | bellard | act.sa_sigaction = host_signal_handler; |
302 | 31e31b8a | bellard | for(i = 1; i < NSIG; i++) { |
303 | c9087c2a | bellard | sigaction(i, &act, NULL);
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304 | 31e31b8a | bellard | } |
305 | 3b46e624 | ths | |
306 | 31e31b8a | bellard | memset(sigact_table, 0, sizeof(sigact_table)); |
307 | 66fb9763 | bellard | |
308 | 66fb9763 | bellard | first_free = &sigqueue_table[0];
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309 | 5fafdf24 | ths | for(i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) |
310 | 66fb9763 | bellard | sigqueue_table[i].next = &sigqueue_table[i + 1];
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311 | 66fb9763 | bellard | sigqueue_table[MAX_SIGQUEUE_SIZE - 1].next = NULL; |
312 | 66fb9763 | bellard | } |
313 | 66fb9763 | bellard | |
314 | 66fb9763 | bellard | /* signal queue handling */
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315 | 66fb9763 | bellard | |
316 | 66fb9763 | bellard | static inline struct sigqueue *alloc_sigqueue(void) |
317 | 66fb9763 | bellard | { |
318 | 66fb9763 | bellard | struct sigqueue *q = first_free;
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319 | 66fb9763 | bellard | if (!q)
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320 | 66fb9763 | bellard | return NULL; |
321 | 66fb9763 | bellard | first_free = q->next; |
322 | 66fb9763 | bellard | return q;
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323 | 31e31b8a | bellard | } |
324 | 31e31b8a | bellard | |
325 | 66fb9763 | bellard | static inline void free_sigqueue(struct sigqueue *q) |
326 | 66fb9763 | bellard | { |
327 | 66fb9763 | bellard | q->next = first_free; |
328 | 66fb9763 | bellard | first_free = q; |
329 | 66fb9763 | bellard | } |
330 | 66fb9763 | bellard | |
331 | 9de5e440 | bellard | /* abort execution with signal */
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332 | 9de5e440 | bellard | void __attribute((noreturn)) force_sig(int sig) |
333 | 66fb9763 | bellard | { |
334 | 66fb9763 | bellard | int host_sig;
|
335 | 66fb9763 | bellard | host_sig = target_to_host_signal(sig); |
336 | 5fafdf24 | ths | fprintf(stderr, "qemu: uncaught target signal %d (%s) - exiting\n",
|
337 | 66fb9763 | bellard | sig, strsignal(host_sig)); |
338 | 9de5e440 | bellard | #if 1 |
339 | 66fb9763 | bellard | _exit(-host_sig); |
340 | 9de5e440 | bellard | #else
|
341 | 9de5e440 | bellard | { |
342 | 9de5e440 | bellard | struct sigaction act;
|
343 | 9de5e440 | bellard | sigemptyset(&act.sa_mask); |
344 | 9de5e440 | bellard | act.sa_flags = SA_SIGINFO; |
345 | 9de5e440 | bellard | act.sa_sigaction = SIG_DFL; |
346 | 9de5e440 | bellard | sigaction(SIGABRT, &act, NULL);
|
347 | 9de5e440 | bellard | abort(); |
348 | 9de5e440 | bellard | } |
349 | 9de5e440 | bellard | #endif
|
350 | 66fb9763 | bellard | } |
351 | 66fb9763 | bellard | |
352 | 9de5e440 | bellard | /* queue a signal so that it will be send to the virtual CPU as soon
|
353 | 9de5e440 | bellard | as possible */
|
354 | 9de5e440 | bellard | int queue_signal(int sig, target_siginfo_t *info) |
355 | 31e31b8a | bellard | { |
356 | 66fb9763 | bellard | struct emulated_sigaction *k;
|
357 | 9de5e440 | bellard | struct sigqueue *q, **pq;
|
358 | 992f48a0 | blueswir1 | abi_ulong handler; |
359 | 66fb9763 | bellard | |
360 | 9de5e440 | bellard | #if defined(DEBUG_SIGNAL)
|
361 | 5fafdf24 | ths | fprintf(stderr, "queue_signal: sig=%d\n",
|
362 | 9de5e440 | bellard | sig); |
363 | 66fb9763 | bellard | #endif
|
364 | 9de5e440 | bellard | k = &sigact_table[sig - 1];
|
365 | 66fb9763 | bellard | handler = k->sa._sa_handler; |
366 | 66fb9763 | bellard | if (handler == TARGET_SIG_DFL) {
|
367 | 66fb9763 | bellard | /* default handler : ignore some signal. The other are fatal */
|
368 | 5fafdf24 | ths | if (sig != TARGET_SIGCHLD &&
|
369 | 5fafdf24 | ths | sig != TARGET_SIGURG && |
370 | 66fb9763 | bellard | sig != TARGET_SIGWINCH) { |
371 | 66fb9763 | bellard | force_sig(sig); |
372 | 9de5e440 | bellard | } else {
|
373 | 9de5e440 | bellard | return 0; /* indicate ignored */ |
374 | 66fb9763 | bellard | } |
375 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_IGN) { |
376 | 66fb9763 | bellard | /* ignore signal */
|
377 | 9de5e440 | bellard | return 0; |
378 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_ERR) { |
379 | 66fb9763 | bellard | force_sig(sig); |
380 | 66fb9763 | bellard | } else {
|
381 | 9de5e440 | bellard | pq = &k->first; |
382 | 9de5e440 | bellard | if (sig < TARGET_SIGRTMIN) {
|
383 | 9de5e440 | bellard | /* if non real time signal, we queue exactly one signal */
|
384 | 9de5e440 | bellard | if (!k->pending)
|
385 | 9de5e440 | bellard | q = &k->info; |
386 | 9de5e440 | bellard | else
|
387 | 9de5e440 | bellard | return 0; |
388 | 9de5e440 | bellard | } else {
|
389 | 9de5e440 | bellard | if (!k->pending) {
|
390 | 9de5e440 | bellard | /* first signal */
|
391 | 9de5e440 | bellard | q = &k->info; |
392 | 9de5e440 | bellard | } else {
|
393 | 9de5e440 | bellard | q = alloc_sigqueue(); |
394 | 9de5e440 | bellard | if (!q)
|
395 | 9de5e440 | bellard | return -EAGAIN;
|
396 | 9de5e440 | bellard | while (*pq != NULL) |
397 | 9de5e440 | bellard | pq = &(*pq)->next; |
398 | 9de5e440 | bellard | } |
399 | 9de5e440 | bellard | } |
400 | 9de5e440 | bellard | *pq = q; |
401 | 9de5e440 | bellard | q->info = *info; |
402 | 9de5e440 | bellard | q->next = NULL;
|
403 | 9de5e440 | bellard | k->pending = 1;
|
404 | 9de5e440 | bellard | /* signal that a new signal is pending */
|
405 | 9de5e440 | bellard | signal_pending = 1;
|
406 | 9de5e440 | bellard | return 1; /* indicates that the signal was queued */ |
407 | 9de5e440 | bellard | } |
408 | 9de5e440 | bellard | } |
409 | 9de5e440 | bellard | |
410 | 5fafdf24 | ths | static void host_signal_handler(int host_signum, siginfo_t *info, |
411 | 9de5e440 | bellard | void *puc)
|
412 | 9de5e440 | bellard | { |
413 | 9de5e440 | bellard | int sig;
|
414 | 9de5e440 | bellard | target_siginfo_t tinfo; |
415 | 9de5e440 | bellard | |
416 | 9de5e440 | bellard | /* the CPU emulator uses some host signals to detect exceptions,
|
417 | 9de5e440 | bellard | we we forward to it some signals */
|
418 | ec6338ba | bellard | if (host_signum == SIGSEGV || host_signum == SIGBUS) {
|
419 | b346ff46 | bellard | if (cpu_signal_handler(host_signum, info, puc))
|
420 | 9de5e440 | bellard | return;
|
421 | 9de5e440 | bellard | } |
422 | 9de5e440 | bellard | |
423 | 9de5e440 | bellard | /* get target signal number */
|
424 | 9de5e440 | bellard | sig = host_to_target_signal(host_signum); |
425 | 9de5e440 | bellard | if (sig < 1 || sig > TARGET_NSIG) |
426 | 9de5e440 | bellard | return;
|
427 | 9de5e440 | bellard | #if defined(DEBUG_SIGNAL)
|
428 | bc8a22cc | bellard | fprintf(stderr, "qemu: got signal %d\n", sig);
|
429 | 9de5e440 | bellard | #endif
|
430 | 9de5e440 | bellard | host_to_target_siginfo_noswap(&tinfo, info); |
431 | 9de5e440 | bellard | if (queue_signal(sig, &tinfo) == 1) { |
432 | 9de5e440 | bellard | /* interrupt the virtual CPU as soon as possible */
|
433 | 68a79315 | bellard | cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
434 | 66fb9763 | bellard | } |
435 | 66fb9763 | bellard | } |
436 | 66fb9763 | bellard | |
437 | 0da46a6e | ths | /* do_sigaltstack() returns target values and errnos. */
|
438 | 579a97f7 | bellard | /* compare linux/kernel/signal.c:do_sigaltstack() */
|
439 | 579a97f7 | bellard | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) |
440 | a04e134a | ths | { |
441 | a04e134a | ths | int ret;
|
442 | a04e134a | ths | struct target_sigaltstack oss;
|
443 | a04e134a | ths | |
444 | a04e134a | ths | /* XXX: test errors */
|
445 | 579a97f7 | bellard | if(uoss_addr)
|
446 | a04e134a | ths | { |
447 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); |
448 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); |
449 | a04e134a | ths | __put_user(sas_ss_flags(sp), &oss.ss_flags); |
450 | a04e134a | ths | } |
451 | a04e134a | ths | |
452 | 579a97f7 | bellard | if(uss_addr)
|
453 | a04e134a | ths | { |
454 | 579a97f7 | bellard | struct target_sigaltstack *uss;
|
455 | 579a97f7 | bellard | struct target_sigaltstack ss;
|
456 | a04e134a | ths | |
457 | 0da46a6e | ths | ret = -TARGET_EFAULT; |
458 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1) |
459 | a04e134a | ths | || __get_user(ss.ss_sp, &uss->ss_sp) |
460 | a04e134a | ths | || __get_user(ss.ss_size, &uss->ss_size) |
461 | a04e134a | ths | || __get_user(ss.ss_flags, &uss->ss_flags)) |
462 | a04e134a | ths | goto out;
|
463 | 579a97f7 | bellard | unlock_user_struct(uss, uss_addr, 0);
|
464 | a04e134a | ths | |
465 | 0da46a6e | ths | ret = -TARGET_EPERM; |
466 | a04e134a | ths | if (on_sig_stack(sp))
|
467 | a04e134a | ths | goto out;
|
468 | a04e134a | ths | |
469 | 0da46a6e | ths | ret = -TARGET_EINVAL; |
470 | a04e134a | ths | if (ss.ss_flags != TARGET_SS_DISABLE
|
471 | a04e134a | ths | && ss.ss_flags != TARGET_SS_ONSTACK |
472 | a04e134a | ths | && ss.ss_flags != 0)
|
473 | a04e134a | ths | goto out;
|
474 | a04e134a | ths | |
475 | a04e134a | ths | if (ss.ss_flags == TARGET_SS_DISABLE) {
|
476 | a04e134a | ths | ss.ss_size = 0;
|
477 | a04e134a | ths | ss.ss_sp = 0;
|
478 | a04e134a | ths | } else {
|
479 | 0da46a6e | ths | ret = -TARGET_ENOMEM; |
480 | a04e134a | ths | if (ss.ss_size < MINSIGSTKSZ)
|
481 | a04e134a | ths | goto out;
|
482 | a04e134a | ths | } |
483 | a04e134a | ths | |
484 | a04e134a | ths | target_sigaltstack_used.ss_sp = ss.ss_sp; |
485 | a04e134a | ths | target_sigaltstack_used.ss_size = ss.ss_size; |
486 | a04e134a | ths | } |
487 | a04e134a | ths | |
488 | 579a97f7 | bellard | if (uoss_addr) {
|
489 | 0da46a6e | ths | ret = -TARGET_EFAULT; |
490 | 579a97f7 | bellard | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
491 | a04e134a | ths | goto out;
|
492 | a04e134a | ths | } |
493 | a04e134a | ths | |
494 | a04e134a | ths | ret = 0;
|
495 | a04e134a | ths | out:
|
496 | a04e134a | ths | return ret;
|
497 | a04e134a | ths | } |
498 | a04e134a | ths | |
499 | 0da46a6e | ths | /* do_sigaction() return host values and errnos */
|
500 | 66fb9763 | bellard | int do_sigaction(int sig, const struct target_sigaction *act, |
501 | 66fb9763 | bellard | struct target_sigaction *oact)
|
502 | 66fb9763 | bellard | { |
503 | 66fb9763 | bellard | struct emulated_sigaction *k;
|
504 | 773b93ee | bellard | struct sigaction act1;
|
505 | 773b93ee | bellard | int host_sig;
|
506 | 0da46a6e | ths | int ret = 0; |
507 | 66fb9763 | bellard | |
508 | 0aeaa8ce | ths | if (sig < 1 || sig > TARGET_NSIG || sig == SIGKILL || sig == SIGSTOP) |
509 | 66fb9763 | bellard | return -EINVAL;
|
510 | 66fb9763 | bellard | k = &sigact_table[sig - 1];
|
511 | 773b93ee | bellard | #if defined(DEBUG_SIGNAL)
|
512 | 5fafdf24 | ths | fprintf(stderr, "sigaction sig=%d act=0x%08x, oact=0x%08x\n",
|
513 | 66fb9763 | bellard | sig, (int)act, (int)oact); |
514 | 66fb9763 | bellard | #endif
|
515 | 66fb9763 | bellard | if (oact) {
|
516 | 66fb9763 | bellard | oact->_sa_handler = tswapl(k->sa._sa_handler); |
517 | 66fb9763 | bellard | oact->sa_flags = tswapl(k->sa.sa_flags); |
518 | 388bb21a | ths | #if !defined(TARGET_MIPS)
|
519 | 388bb21a | ths | oact->sa_restorer = tswapl(k->sa.sa_restorer); |
520 | 388bb21a | ths | #endif
|
521 | 66fb9763 | bellard | oact->sa_mask = k->sa.sa_mask; |
522 | 66fb9763 | bellard | } |
523 | 66fb9763 | bellard | if (act) {
|
524 | 66fb9763 | bellard | k->sa._sa_handler = tswapl(act->_sa_handler); |
525 | 66fb9763 | bellard | k->sa.sa_flags = tswapl(act->sa_flags); |
526 | 388bb21a | ths | #if !defined(TARGET_MIPS)
|
527 | 388bb21a | ths | k->sa.sa_restorer = tswapl(act->sa_restorer); |
528 | 388bb21a | ths | #endif
|
529 | 66fb9763 | bellard | k->sa.sa_mask = act->sa_mask; |
530 | 773b93ee | bellard | |
531 | 773b93ee | bellard | /* we update the host linux signal state */
|
532 | 773b93ee | bellard | host_sig = target_to_host_signal(sig); |
533 | 773b93ee | bellard | if (host_sig != SIGSEGV && host_sig != SIGBUS) {
|
534 | 773b93ee | bellard | sigfillset(&act1.sa_mask); |
535 | 773b93ee | bellard | act1.sa_flags = SA_SIGINFO; |
536 | 773b93ee | bellard | if (k->sa.sa_flags & TARGET_SA_RESTART)
|
537 | 773b93ee | bellard | act1.sa_flags |= SA_RESTART; |
538 | 773b93ee | bellard | /* NOTE: it is important to update the host kernel signal
|
539 | 773b93ee | bellard | ignore state to avoid getting unexpected interrupted
|
540 | 773b93ee | bellard | syscalls */
|
541 | 773b93ee | bellard | if (k->sa._sa_handler == TARGET_SIG_IGN) {
|
542 | 773b93ee | bellard | act1.sa_sigaction = (void *)SIG_IGN;
|
543 | 773b93ee | bellard | } else if (k->sa._sa_handler == TARGET_SIG_DFL) { |
544 | 773b93ee | bellard | act1.sa_sigaction = (void *)SIG_DFL;
|
545 | 773b93ee | bellard | } else {
|
546 | 773b93ee | bellard | act1.sa_sigaction = host_signal_handler; |
547 | 773b93ee | bellard | } |
548 | 0da46a6e | ths | ret = sigaction(host_sig, &act1, NULL);
|
549 | 773b93ee | bellard | } |
550 | 66fb9763 | bellard | } |
551 | 0da46a6e | ths | return ret;
|
552 | 66fb9763 | bellard | } |
553 | 66fb9763 | bellard | |
554 | 43fff238 | bellard | #ifndef offsetof
|
555 | 43fff238 | bellard | #define offsetof(type, field) ((size_t) &((type *)0)->field) |
556 | 43fff238 | bellard | #endif
|
557 | 43fff238 | bellard | |
558 | 5fafdf24 | ths | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
559 | 43fff238 | bellard | const target_siginfo_t *info)
|
560 | 43fff238 | bellard | { |
561 | 43fff238 | bellard | tswap_siginfo(tinfo, info); |
562 | 43fff238 | bellard | return 0; |
563 | 43fff238 | bellard | } |
564 | 43fff238 | bellard | |
565 | 459a4017 | bellard | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
566 | 66fb9763 | bellard | |
567 | 66fb9763 | bellard | /* from the Linux kernel */
|
568 | 66fb9763 | bellard | |
569 | 66fb9763 | bellard | struct target_fpreg {
|
570 | 66fb9763 | bellard | uint16_t significand[4];
|
571 | 66fb9763 | bellard | uint16_t exponent; |
572 | 66fb9763 | bellard | }; |
573 | 66fb9763 | bellard | |
574 | 66fb9763 | bellard | struct target_fpxreg {
|
575 | 66fb9763 | bellard | uint16_t significand[4];
|
576 | 66fb9763 | bellard | uint16_t exponent; |
577 | 66fb9763 | bellard | uint16_t padding[3];
|
578 | 66fb9763 | bellard | }; |
579 | 66fb9763 | bellard | |
580 | 66fb9763 | bellard | struct target_xmmreg {
|
581 | 992f48a0 | blueswir1 | abi_ulong element[4];
|
582 | 66fb9763 | bellard | }; |
583 | 66fb9763 | bellard | |
584 | 66fb9763 | bellard | struct target_fpstate {
|
585 | 66fb9763 | bellard | /* Regular FPU environment */
|
586 | 992f48a0 | blueswir1 | abi_ulong cw; |
587 | 992f48a0 | blueswir1 | abi_ulong sw; |
588 | 992f48a0 | blueswir1 | abi_ulong tag; |
589 | 992f48a0 | blueswir1 | abi_ulong ipoff; |
590 | 992f48a0 | blueswir1 | abi_ulong cssel; |
591 | 992f48a0 | blueswir1 | abi_ulong dataoff; |
592 | 992f48a0 | blueswir1 | abi_ulong datasel; |
593 | 66fb9763 | bellard | struct target_fpreg _st[8]; |
594 | 66fb9763 | bellard | uint16_t status; |
595 | 66fb9763 | bellard | uint16_t magic; /* 0xffff = regular FPU data only */
|
596 | 66fb9763 | bellard | |
597 | 66fb9763 | bellard | /* FXSR FPU environment */
|
598 | 992f48a0 | blueswir1 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
599 | 992f48a0 | blueswir1 | abi_ulong mxcsr; |
600 | 992f48a0 | blueswir1 | abi_ulong reserved; |
601 | 66fb9763 | bellard | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
602 | 66fb9763 | bellard | struct target_xmmreg _xmm[8]; |
603 | 992f48a0 | blueswir1 | abi_ulong padding[56];
|
604 | 66fb9763 | bellard | }; |
605 | 66fb9763 | bellard | |
606 | 66fb9763 | bellard | #define X86_FXSR_MAGIC 0x0000 |
607 | 66fb9763 | bellard | |
608 | 66fb9763 | bellard | struct target_sigcontext {
|
609 | 66fb9763 | bellard | uint16_t gs, __gsh; |
610 | 66fb9763 | bellard | uint16_t fs, __fsh; |
611 | 66fb9763 | bellard | uint16_t es, __esh; |
612 | 66fb9763 | bellard | uint16_t ds, __dsh; |
613 | 992f48a0 | blueswir1 | abi_ulong edi; |
614 | 992f48a0 | blueswir1 | abi_ulong esi; |
615 | 992f48a0 | blueswir1 | abi_ulong ebp; |
616 | 992f48a0 | blueswir1 | abi_ulong esp; |
617 | 992f48a0 | blueswir1 | abi_ulong ebx; |
618 | 992f48a0 | blueswir1 | abi_ulong edx; |
619 | 992f48a0 | blueswir1 | abi_ulong ecx; |
620 | 992f48a0 | blueswir1 | abi_ulong eax; |
621 | 992f48a0 | blueswir1 | abi_ulong trapno; |
622 | 992f48a0 | blueswir1 | abi_ulong err; |
623 | 992f48a0 | blueswir1 | abi_ulong eip; |
624 | 66fb9763 | bellard | uint16_t cs, __csh; |
625 | 992f48a0 | blueswir1 | abi_ulong eflags; |
626 | 992f48a0 | blueswir1 | abi_ulong esp_at_signal; |
627 | 66fb9763 | bellard | uint16_t ss, __ssh; |
628 | 992f48a0 | blueswir1 | abi_ulong fpstate; /* pointer */
|
629 | 992f48a0 | blueswir1 | abi_ulong oldmask; |
630 | 992f48a0 | blueswir1 | abi_ulong cr2; |
631 | 66fb9763 | bellard | }; |
632 | 66fb9763 | bellard | |
633 | 66fb9763 | bellard | struct target_ucontext {
|
634 | 992f48a0 | blueswir1 | abi_ulong tuc_flags; |
635 | 992f48a0 | blueswir1 | abi_ulong tuc_link; |
636 | b8076a74 | bellard | target_stack_t tuc_stack; |
637 | b8076a74 | bellard | struct target_sigcontext tuc_mcontext;
|
638 | b8076a74 | bellard | target_sigset_t tuc_sigmask; /* mask last for extensibility */
|
639 | 66fb9763 | bellard | }; |
640 | 66fb9763 | bellard | |
641 | 66fb9763 | bellard | struct sigframe
|
642 | 66fb9763 | bellard | { |
643 | 992f48a0 | blueswir1 | abi_ulong pretcode; |
644 | 66fb9763 | bellard | int sig;
|
645 | 66fb9763 | bellard | struct target_sigcontext sc;
|
646 | 66fb9763 | bellard | struct target_fpstate fpstate;
|
647 | 992f48a0 | blueswir1 | abi_ulong extramask[TARGET_NSIG_WORDS-1];
|
648 | 66fb9763 | bellard | char retcode[8]; |
649 | 66fb9763 | bellard | }; |
650 | 66fb9763 | bellard | |
651 | 66fb9763 | bellard | struct rt_sigframe
|
652 | 66fb9763 | bellard | { |
653 | 992f48a0 | blueswir1 | abi_ulong pretcode; |
654 | 66fb9763 | bellard | int sig;
|
655 | 992f48a0 | blueswir1 | abi_ulong pinfo; |
656 | 992f48a0 | blueswir1 | abi_ulong puc; |
657 | 66fb9763 | bellard | struct target_siginfo info;
|
658 | 66fb9763 | bellard | struct target_ucontext uc;
|
659 | 66fb9763 | bellard | struct target_fpstate fpstate;
|
660 | 66fb9763 | bellard | char retcode[8]; |
661 | 66fb9763 | bellard | }; |
662 | 66fb9763 | bellard | |
663 | 66fb9763 | bellard | /*
|
664 | 66fb9763 | bellard | * Set up a signal frame.
|
665 | 66fb9763 | bellard | */
|
666 | 66fb9763 | bellard | |
667 | 66fb9763 | bellard | /* XXX: save x87 state */
|
668 | 66fb9763 | bellard | static int |
669 | 66fb9763 | bellard | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, |
670 | 66fb9763 | bellard | CPUX86State *env, unsigned long mask) |
671 | 66fb9763 | bellard | { |
672 | 66fb9763 | bellard | int err = 0; |
673 | 775b58d8 | bellard | uint16_t magic; |
674 | 66fb9763 | bellard | |
675 | 579a97f7 | bellard | /* already locked in setup_frame() */
|
676 | a52c757c | bellard | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
677 | a52c757c | bellard | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); |
678 | a52c757c | bellard | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); |
679 | a52c757c | bellard | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); |
680 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EDI], &sc->edi); |
681 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESI], &sc->esi); |
682 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EBP], &sc->ebp); |
683 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESP], &sc->esp); |
684 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EBX], &sc->ebx); |
685 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EDX], &sc->edx); |
686 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ECX], &sc->ecx); |
687 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EAX], &sc->eax); |
688 | 66099dd9 | bellard | err |= __put_user(env->exception_index, &sc->trapno); |
689 | 66099dd9 | bellard | err |= __put_user(env->error_code, &sc->err); |
690 | 66fb9763 | bellard | err |= __put_user(env->eip, &sc->eip); |
691 | a52c757c | bellard | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
692 | 66fb9763 | bellard | err |= __put_user(env->eflags, &sc->eflags); |
693 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); |
694 | a52c757c | bellard | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
695 | ed2dcdf6 | bellard | |
696 | ed2dcdf6 | bellard | cpu_x86_fsave(env, (void *)fpstate, 1); |
697 | ed2dcdf6 | bellard | fpstate->status = fpstate->sw; |
698 | 775b58d8 | bellard | magic = 0xffff;
|
699 | 775b58d8 | bellard | err |= __put_user(magic, &fpstate->magic); |
700 | ed2dcdf6 | bellard | err |= __put_user(fpstate, &sc->fpstate); |
701 | ed2dcdf6 | bellard | |
702 | 66fb9763 | bellard | /* non-iBCS2 extensions.. */
|
703 | 66fb9763 | bellard | err |= __put_user(mask, &sc->oldmask); |
704 | a52c757c | bellard | err |= __put_user(env->cr[2], &sc->cr2);
|
705 | 66fb9763 | bellard | return err;
|
706 | 31e31b8a | bellard | } |
707 | 31e31b8a | bellard | |
708 | 66fb9763 | bellard | /*
|
709 | 66fb9763 | bellard | * Determine which stack to use..
|
710 | 66fb9763 | bellard | */
|
711 | 31e31b8a | bellard | |
712 | 579a97f7 | bellard | static inline abi_ulong |
713 | 66fb9763 | bellard | get_sigframe(struct emulated_sigaction *ka, CPUX86State *env, size_t frame_size)
|
714 | 31e31b8a | bellard | { |
715 | 66fb9763 | bellard | unsigned long esp; |
716 | 66fb9763 | bellard | |
717 | 66fb9763 | bellard | /* Default to using normal stack */
|
718 | 66fb9763 | bellard | esp = env->regs[R_ESP]; |
719 | 66fb9763 | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
720 | a04e134a | ths | if (ka->sa.sa_flags & TARGET_SA_ONSTACK) {
|
721 | a04e134a | ths | if (sas_ss_flags(esp) == 0) |
722 | a04e134a | ths | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
723 | a04e134a | ths | } |
724 | 66fb9763 | bellard | |
725 | 66fb9763 | bellard | /* This is the legacy signal stack switching. */
|
726 | 5fafdf24 | ths | else
|
727 | a52c757c | bellard | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
728 | a52c757c | bellard | !(ka->sa.sa_flags & TARGET_SA_RESTORER) && |
729 | a52c757c | bellard | ka->sa.sa_restorer) { |
730 | a52c757c | bellard | esp = (unsigned long) ka->sa.sa_restorer; |
731 | a52c757c | bellard | } |
732 | 579a97f7 | bellard | return (esp - frame_size) & -8ul; |
733 | 66fb9763 | bellard | } |
734 | 66fb9763 | bellard | |
735 | 579a97f7 | bellard | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */
|
736 | 66fb9763 | bellard | static void setup_frame(int sig, struct emulated_sigaction *ka, |
737 | 66fb9763 | bellard | target_sigset_t *set, CPUX86State *env) |
738 | 66fb9763 | bellard | { |
739 | 579a97f7 | bellard | abi_ulong frame_addr; |
740 | 66fb9763 | bellard | struct sigframe *frame;
|
741 | 9231944d | bellard | int i, err = 0; |
742 | 66fb9763 | bellard | |
743 | 579a97f7 | bellard | frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
744 | 66fb9763 | bellard | |
745 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
746 | 66fb9763 | bellard | goto give_sigsegv;
|
747 | 579a97f7 | bellard | |
748 | 66fb9763 | bellard | err |= __put_user((/*current->exec_domain
|
749 | 66fb9763 | bellard | && current->exec_domain->signal_invmap
|
750 | 66fb9763 | bellard | && sig < 32
|
751 | 66fb9763 | bellard | ? current->exec_domain->signal_invmap[sig]
|
752 | 66fb9763 | bellard | : */ sig),
|
753 | 66fb9763 | bellard | &frame->sig); |
754 | 66fb9763 | bellard | if (err)
|
755 | 66fb9763 | bellard | goto give_sigsegv;
|
756 | 66fb9763 | bellard | |
757 | 66fb9763 | bellard | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0]);
|
758 | 66fb9763 | bellard | if (err)
|
759 | 66fb9763 | bellard | goto give_sigsegv;
|
760 | 66fb9763 | bellard | |
761 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
762 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
763 | 9231944d | bellard | goto give_sigsegv;
|
764 | 9231944d | bellard | } |
765 | 66fb9763 | bellard | |
766 | 66fb9763 | bellard | /* Set up to return from userspace. If provided, use a stub
|
767 | 66fb9763 | bellard | already in userspace. */
|
768 | 66fb9763 | bellard | if (ka->sa.sa_flags & TARGET_SA_RESTORER) {
|
769 | 66fb9763 | bellard | err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); |
770 | 66fb9763 | bellard | } else {
|
771 | 775b58d8 | bellard | uint16_t val16; |
772 | 66fb9763 | bellard | err |= __put_user(frame->retcode, &frame->pretcode); |
773 | 66fb9763 | bellard | /* This is popl %eax ; movl $,%eax ; int $0x80 */
|
774 | 775b58d8 | bellard | val16 = 0xb858;
|
775 | 775b58d8 | bellard | err |= __put_user(val16, (uint16_t *)(frame->retcode+0));
|
776 | 66fb9763 | bellard | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
777 | 775b58d8 | bellard | val16 = 0x80cd;
|
778 | 775b58d8 | bellard | err |= __put_user(val16, (uint16_t *)(frame->retcode+6));
|
779 | 66fb9763 | bellard | } |
780 | 66fb9763 | bellard | |
781 | 66fb9763 | bellard | if (err)
|
782 | 66fb9763 | bellard | goto give_sigsegv;
|
783 | 66fb9763 | bellard | |
784 | 66fb9763 | bellard | /* Set up registers for signal handler */
|
785 | 53a5960a | pbrook | env->regs[R_ESP] = h2g(frame); |
786 | 66fb9763 | bellard | env->eip = (unsigned long) ka->sa._sa_handler; |
787 | 66fb9763 | bellard | |
788 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, __USER_DS); |
789 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, __USER_DS); |
790 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, __USER_DS); |
791 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, __USER_CS); |
792 | 66fb9763 | bellard | env->eflags &= ~TF_MASK; |
793 | 66fb9763 | bellard | |
794 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
795 | 579a97f7 | bellard | |
796 | 66fb9763 | bellard | return;
|
797 | 66fb9763 | bellard | |
798 | 66fb9763 | bellard | give_sigsegv:
|
799 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
800 | 66fb9763 | bellard | if (sig == TARGET_SIGSEGV)
|
801 | 66fb9763 | bellard | ka->sa._sa_handler = TARGET_SIG_DFL; |
802 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV /* , current */);
|
803 | 66fb9763 | bellard | } |
804 | 66fb9763 | bellard | |
805 | 579a97f7 | bellard | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
|
806 | 5fafdf24 | ths | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
807 | 9de5e440 | bellard | target_siginfo_t *info, |
808 | 66fb9763 | bellard | target_sigset_t *set, CPUX86State *env) |
809 | 66fb9763 | bellard | { |
810 | 579a97f7 | bellard | abi_ulong frame_addr; |
811 | 66fb9763 | bellard | struct rt_sigframe *frame;
|
812 | 9231944d | bellard | int i, err = 0; |
813 | 66fb9763 | bellard | |
814 | 579a97f7 | bellard | frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
815 | 66fb9763 | bellard | |
816 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
817 | 66fb9763 | bellard | goto give_sigsegv;
|
818 | 66fb9763 | bellard | |
819 | 66fb9763 | bellard | err |= __put_user((/*current->exec_domain
|
820 | 66fb9763 | bellard | && current->exec_domain->signal_invmap
|
821 | 66fb9763 | bellard | && sig < 32
|
822 | 66fb9763 | bellard | ? current->exec_domain->signal_invmap[sig]
|
823 | 66fb9763 | bellard | : */sig),
|
824 | 66fb9763 | bellard | &frame->sig); |
825 | 992f48a0 | blueswir1 | err |= __put_user((abi_ulong)&frame->info, &frame->pinfo); |
826 | 992f48a0 | blueswir1 | err |= __put_user((abi_ulong)&frame->uc, &frame->puc); |
827 | 66fb9763 | bellard | err |= copy_siginfo_to_user(&frame->info, info); |
828 | 66fb9763 | bellard | if (err)
|
829 | 66fb9763 | bellard | goto give_sigsegv;
|
830 | 31e31b8a | bellard | |
831 | 66fb9763 | bellard | /* Create the ucontext. */
|
832 | b8076a74 | bellard | err |= __put_user(0, &frame->uc.tuc_flags);
|
833 | b8076a74 | bellard | err |= __put_user(0, &frame->uc.tuc_link);
|
834 | a04e134a | ths | err |= __put_user(target_sigaltstack_used.ss_sp, |
835 | b8076a74 | bellard | &frame->uc.tuc_stack.ss_sp); |
836 | a04e134a | ths | err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
837 | b8076a74 | bellard | &frame->uc.tuc_stack.ss_flags); |
838 | a04e134a | ths | err |= __put_user(target_sigaltstack_used.ss_size, |
839 | b8076a74 | bellard | &frame->uc.tuc_stack.ss_size); |
840 | b8076a74 | bellard | err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, |
841 | 66fb9763 | bellard | env, set->sig[0]);
|
842 | 9231944d | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
843 | b8076a74 | bellard | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
|
844 | 9231944d | bellard | goto give_sigsegv;
|
845 | 9231944d | bellard | } |
846 | 31e31b8a | bellard | |
847 | 66fb9763 | bellard | /* Set up to return from userspace. If provided, use a stub
|
848 | 66fb9763 | bellard | already in userspace. */
|
849 | 66fb9763 | bellard | if (ka->sa.sa_flags & TARGET_SA_RESTORER) {
|
850 | 66fb9763 | bellard | err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); |
851 | 66fb9763 | bellard | } else {
|
852 | 775b58d8 | bellard | uint16_t val16; |
853 | 775b58d8 | bellard | |
854 | 66fb9763 | bellard | err |= __put_user(frame->retcode, &frame->pretcode); |
855 | 66fb9763 | bellard | /* This is movl $,%eax ; int $0x80 */
|
856 | 775b58d8 | bellard | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
857 | 66fb9763 | bellard | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
858 | 775b58d8 | bellard | val16 = 0x80cd;
|
859 | 775b58d8 | bellard | err |= __put_user(val16, (uint16_t *)(frame->retcode+5));
|
860 | 66fb9763 | bellard | } |
861 | 66fb9763 | bellard | |
862 | 66fb9763 | bellard | if (err)
|
863 | 66fb9763 | bellard | goto give_sigsegv;
|
864 | 66fb9763 | bellard | |
865 | 66fb9763 | bellard | /* Set up registers for signal handler */
|
866 | 66fb9763 | bellard | env->regs[R_ESP] = (unsigned long) frame; |
867 | 66fb9763 | bellard | env->eip = (unsigned long) ka->sa._sa_handler; |
868 | 66fb9763 | bellard | |
869 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, __USER_DS); |
870 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, __USER_DS); |
871 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, __USER_DS); |
872 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, __USER_CS); |
873 | 66fb9763 | bellard | env->eflags &= ~TF_MASK; |
874 | 66fb9763 | bellard | |
875 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
876 | 579a97f7 | bellard | |
877 | 66fb9763 | bellard | return;
|
878 | 66fb9763 | bellard | |
879 | 66fb9763 | bellard | give_sigsegv:
|
880 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
881 | 66fb9763 | bellard | if (sig == TARGET_SIGSEGV)
|
882 | 66fb9763 | bellard | ka->sa._sa_handler = TARGET_SIG_DFL; |
883 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV /* , current */);
|
884 | 66fb9763 | bellard | } |
885 | 66fb9763 | bellard | |
886 | 66fb9763 | bellard | static int |
887 | 66fb9763 | bellard | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) |
888 | 66fb9763 | bellard | { |
889 | 66fb9763 | bellard | unsigned int err = 0; |
890 | 66fb9763 | bellard | |
891 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_GS, lduw(&sc->gs)); |
892 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_FS, lduw(&sc->fs)); |
893 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, lduw(&sc->es)); |
894 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, lduw(&sc->ds)); |
895 | 66fb9763 | bellard | |
896 | 66fb9763 | bellard | env->regs[R_EDI] = ldl(&sc->edi); |
897 | 66fb9763 | bellard | env->regs[R_ESI] = ldl(&sc->esi); |
898 | 66fb9763 | bellard | env->regs[R_EBP] = ldl(&sc->ebp); |
899 | 66fb9763 | bellard | env->regs[R_ESP] = ldl(&sc->esp); |
900 | 66fb9763 | bellard | env->regs[R_EBX] = ldl(&sc->ebx); |
901 | 66fb9763 | bellard | env->regs[R_EDX] = ldl(&sc->edx); |
902 | 66fb9763 | bellard | env->regs[R_ECX] = ldl(&sc->ecx); |
903 | 66fb9763 | bellard | env->eip = ldl(&sc->eip); |
904 | 66fb9763 | bellard | |
905 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, lduw(&sc->cs) | 3);
|
906 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, lduw(&sc->ss) | 3);
|
907 | 5fafdf24 | ths | |
908 | 66fb9763 | bellard | { |
909 | 66fb9763 | bellard | unsigned int tmpflags; |
910 | 66fb9763 | bellard | tmpflags = ldl(&sc->eflags); |
911 | 66fb9763 | bellard | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); |
912 | 66fb9763 | bellard | // regs->orig_eax = -1; /* disable syscall checks */
|
913 | 66fb9763 | bellard | } |
914 | 66fb9763 | bellard | |
915 | 66fb9763 | bellard | { |
916 | 66fb9763 | bellard | struct _fpstate * buf;
|
917 | ed2dcdf6 | bellard | buf = (void *)ldl(&sc->fpstate);
|
918 | 66fb9763 | bellard | if (buf) {
|
919 | ed2dcdf6 | bellard | #if 0
|
920 | 66fb9763 | bellard | if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
|
921 | 66fb9763 | bellard | goto badframe;
|
922 | ed2dcdf6 | bellard | #endif
|
923 | ed2dcdf6 | bellard | cpu_x86_frstor(env, (void *)buf, 1); |
924 | 66fb9763 | bellard | } |
925 | 66fb9763 | bellard | } |
926 | ed2dcdf6 | bellard | |
927 | 66fb9763 | bellard | *peax = ldl(&sc->eax); |
928 | 66fb9763 | bellard | return err;
|
929 | 66fb9763 | bellard | #if 0
|
930 | 66fb9763 | bellard | badframe:
|
931 | 66fb9763 | bellard | return 1;
|
932 | 66fb9763 | bellard | #endif
|
933 | 66fb9763 | bellard | } |
934 | 66fb9763 | bellard | |
935 | 66fb9763 | bellard | long do_sigreturn(CPUX86State *env)
|
936 | 66fb9763 | bellard | { |
937 | 579a97f7 | bellard | struct sigframe *frame;
|
938 | 579a97f7 | bellard | abi_ulong frame_addr = env->regs[R_ESP] - 8;
|
939 | 66fb9763 | bellard | target_sigset_t target_set; |
940 | 66fb9763 | bellard | sigset_t set; |
941 | 66fb9763 | bellard | int eax, i;
|
942 | 66fb9763 | bellard | |
943 | 447db213 | bellard | #if defined(DEBUG_SIGNAL)
|
944 | 447db213 | bellard | fprintf(stderr, "do_sigreturn\n");
|
945 | 447db213 | bellard | #endif
|
946 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
947 | 579a97f7 | bellard | goto badframe;
|
948 | 66fb9763 | bellard | /* set blocked signals */
|
949 | 9231944d | bellard | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
950 | 9231944d | bellard | goto badframe;
|
951 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
952 | 9231944d | bellard | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) |
953 | 9231944d | bellard | goto badframe;
|
954 | 9231944d | bellard | } |
955 | 66fb9763 | bellard | |
956 | 9231944d | bellard | target_to_host_sigset_internal(&set, &target_set); |
957 | 66fb9763 | bellard | sigprocmask(SIG_SETMASK, &set, NULL);
|
958 | 3b46e624 | ths | |
959 | 66fb9763 | bellard | /* restore registers */
|
960 | 66fb9763 | bellard | if (restore_sigcontext(env, &frame->sc, &eax))
|
961 | 66fb9763 | bellard | goto badframe;
|
962 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
963 | 66fb9763 | bellard | return eax;
|
964 | 66fb9763 | bellard | |
965 | 66fb9763 | bellard | badframe:
|
966 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 0);
|
967 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV); |
968 | 66fb9763 | bellard | return 0; |
969 | 66fb9763 | bellard | } |
970 | 66fb9763 | bellard | |
971 | 66fb9763 | bellard | long do_rt_sigreturn(CPUX86State *env)
|
972 | 66fb9763 | bellard | { |
973 | 53a5960a | pbrook | struct rt_sigframe *frame = (struct rt_sigframe *)g2h(env->regs[R_ESP] - 4); |
974 | 66fb9763 | bellard | sigset_t set; |
975 | 66fb9763 | bellard | int eax;
|
976 | 66fb9763 | bellard | |
977 | 66fb9763 | bellard | #if 0
|
978 | 66fb9763 | bellard | if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
|
979 | 66fb9763 | bellard | goto badframe;
|
980 | 66fb9763 | bellard | #endif
|
981 | b8076a74 | bellard | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
982 | 66fb9763 | bellard | sigprocmask(SIG_SETMASK, &set, NULL);
|
983 | 5fafdf24 | ths | |
984 | b8076a74 | bellard | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax))
|
985 | 66fb9763 | bellard | goto badframe;
|
986 | 66fb9763 | bellard | |
987 | 579a97f7 | bellard | if (do_sigaltstack(h2g(&frame->uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
988 | 66fb9763 | bellard | goto badframe;
|
989 | a04e134a | ths | |
990 | 66fb9763 | bellard | return eax;
|
991 | 66fb9763 | bellard | |
992 | 66fb9763 | bellard | badframe:
|
993 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV); |
994 | 66fb9763 | bellard | return 0; |
995 | 66fb9763 | bellard | } |
996 | 66fb9763 | bellard | |
997 | 43fff238 | bellard | #elif defined(TARGET_ARM)
|
998 | 43fff238 | bellard | |
999 | 43fff238 | bellard | struct target_sigcontext {
|
1000 | 992f48a0 | blueswir1 | abi_ulong trap_no; |
1001 | 992f48a0 | blueswir1 | abi_ulong error_code; |
1002 | 992f48a0 | blueswir1 | abi_ulong oldmask; |
1003 | 992f48a0 | blueswir1 | abi_ulong arm_r0; |
1004 | 992f48a0 | blueswir1 | abi_ulong arm_r1; |
1005 | 992f48a0 | blueswir1 | abi_ulong arm_r2; |
1006 | 992f48a0 | blueswir1 | abi_ulong arm_r3; |
1007 | 992f48a0 | blueswir1 | abi_ulong arm_r4; |
1008 | 992f48a0 | blueswir1 | abi_ulong arm_r5; |
1009 | 992f48a0 | blueswir1 | abi_ulong arm_r6; |
1010 | 992f48a0 | blueswir1 | abi_ulong arm_r7; |
1011 | 992f48a0 | blueswir1 | abi_ulong arm_r8; |
1012 | 992f48a0 | blueswir1 | abi_ulong arm_r9; |
1013 | 992f48a0 | blueswir1 | abi_ulong arm_r10; |
1014 | 992f48a0 | blueswir1 | abi_ulong arm_fp; |
1015 | 992f48a0 | blueswir1 | abi_ulong arm_ip; |
1016 | 992f48a0 | blueswir1 | abi_ulong arm_sp; |
1017 | 992f48a0 | blueswir1 | abi_ulong arm_lr; |
1018 | 992f48a0 | blueswir1 | abi_ulong arm_pc; |
1019 | 992f48a0 | blueswir1 | abi_ulong arm_cpsr; |
1020 | 992f48a0 | blueswir1 | abi_ulong fault_address; |
1021 | 43fff238 | bellard | }; |
1022 | 43fff238 | bellard | |
1023 | 43fff238 | bellard | struct target_ucontext {
|
1024 | 992f48a0 | blueswir1 | abi_ulong tuc_flags; |
1025 | 992f48a0 | blueswir1 | abi_ulong tuc_link; |
1026 | b8076a74 | bellard | target_stack_t tuc_stack; |
1027 | b8076a74 | bellard | struct target_sigcontext tuc_mcontext;
|
1028 | b8076a74 | bellard | target_sigset_t tuc_sigmask; /* mask last for extensibility */
|
1029 | 43fff238 | bellard | }; |
1030 | 43fff238 | bellard | |
1031 | 43fff238 | bellard | struct sigframe
|
1032 | 43fff238 | bellard | { |
1033 | 43fff238 | bellard | struct target_sigcontext sc;
|
1034 | 992f48a0 | blueswir1 | abi_ulong extramask[TARGET_NSIG_WORDS-1];
|
1035 | 992f48a0 | blueswir1 | abi_ulong retcode; |
1036 | 43fff238 | bellard | }; |
1037 | 43fff238 | bellard | |
1038 | 43fff238 | bellard | struct rt_sigframe
|
1039 | 43fff238 | bellard | { |
1040 | 43fff238 | bellard | struct target_siginfo *pinfo;
|
1041 | 43fff238 | bellard | void *puc;
|
1042 | 43fff238 | bellard | struct target_siginfo info;
|
1043 | 43fff238 | bellard | struct target_ucontext uc;
|
1044 | 992f48a0 | blueswir1 | abi_ulong retcode; |
1045 | 43fff238 | bellard | }; |
1046 | 43fff238 | bellard | |
1047 | 43fff238 | bellard | #define TARGET_CONFIG_CPU_32 1 |
1048 | 43fff238 | bellard | |
1049 | 43fff238 | bellard | /*
|
1050 | 43fff238 | bellard | * For ARM syscalls, we encode the syscall number into the instruction.
|
1051 | 43fff238 | bellard | */
|
1052 | 43fff238 | bellard | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) |
1053 | 43fff238 | bellard | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) |
1054 | 43fff238 | bellard | |
1055 | 43fff238 | bellard | /*
|
1056 | 43fff238 | bellard | * For Thumb syscalls, we pass the syscall number via r7. We therefore
|
1057 | 43fff238 | bellard | * need two 16-bit instructions.
|
1058 | 43fff238 | bellard | */
|
1059 | 43fff238 | bellard | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) |
1060 | 43fff238 | bellard | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) |
1061 | 43fff238 | bellard | |
1062 | 992f48a0 | blueswir1 | static const abi_ulong retcodes[4] = { |
1063 | 43fff238 | bellard | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1064 | 43fff238 | bellard | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN |
1065 | 43fff238 | bellard | }; |
1066 | 43fff238 | bellard | |
1067 | 43fff238 | bellard | |
1068 | 43fff238 | bellard | #define __put_user_error(x,p,e) __put_user(x, p)
|
1069 | 43fff238 | bellard | #define __get_user_error(x,p,e) __get_user(x, p)
|
1070 | 43fff238 | bellard | |
1071 | 43fff238 | bellard | static inline int valid_user_regs(CPUState *regs) |
1072 | 43fff238 | bellard | { |
1073 | 43fff238 | bellard | return 1; |
1074 | 43fff238 | bellard | } |
1075 | 43fff238 | bellard | |
1076 | 43fff238 | bellard | static int |
1077 | 43fff238 | bellard | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
1078 | 43fff238 | bellard | CPUState *env, unsigned long mask) |
1079 | 43fff238 | bellard | { |
1080 | 43fff238 | bellard | int err = 0; |
1081 | 43fff238 | bellard | |
1082 | 43fff238 | bellard | __put_user_error(env->regs[0], &sc->arm_r0, err);
|
1083 | 43fff238 | bellard | __put_user_error(env->regs[1], &sc->arm_r1, err);
|
1084 | 43fff238 | bellard | __put_user_error(env->regs[2], &sc->arm_r2, err);
|
1085 | 43fff238 | bellard | __put_user_error(env->regs[3], &sc->arm_r3, err);
|
1086 | 43fff238 | bellard | __put_user_error(env->regs[4], &sc->arm_r4, err);
|
1087 | 43fff238 | bellard | __put_user_error(env->regs[5], &sc->arm_r5, err);
|
1088 | 43fff238 | bellard | __put_user_error(env->regs[6], &sc->arm_r6, err);
|
1089 | 43fff238 | bellard | __put_user_error(env->regs[7], &sc->arm_r7, err);
|
1090 | 43fff238 | bellard | __put_user_error(env->regs[8], &sc->arm_r8, err);
|
1091 | 43fff238 | bellard | __put_user_error(env->regs[9], &sc->arm_r9, err);
|
1092 | 43fff238 | bellard | __put_user_error(env->regs[10], &sc->arm_r10, err);
|
1093 | 43fff238 | bellard | __put_user_error(env->regs[11], &sc->arm_fp, err);
|
1094 | 43fff238 | bellard | __put_user_error(env->regs[12], &sc->arm_ip, err);
|
1095 | 43fff238 | bellard | __put_user_error(env->regs[13], &sc->arm_sp, err);
|
1096 | 43fff238 | bellard | __put_user_error(env->regs[14], &sc->arm_lr, err);
|
1097 | 43fff238 | bellard | __put_user_error(env->regs[15], &sc->arm_pc, err);
|
1098 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1099 | b5ff1b31 | bellard | __put_user_error(cpsr_read(env), &sc->arm_cpsr, err); |
1100 | 43fff238 | bellard | #endif
|
1101 | 43fff238 | bellard | |
1102 | 43fff238 | bellard | __put_user_error(/* current->thread.trap_no */ 0, &sc->trap_no, err); |
1103 | 43fff238 | bellard | __put_user_error(/* current->thread.error_code */ 0, &sc->error_code, err); |
1104 | 43fff238 | bellard | __put_user_error(/* current->thread.address */ 0, &sc->fault_address, err); |
1105 | 43fff238 | bellard | __put_user_error(mask, &sc->oldmask, err); |
1106 | 43fff238 | bellard | |
1107 | 43fff238 | bellard | return err;
|
1108 | 43fff238 | bellard | } |
1109 | 43fff238 | bellard | |
1110 | 579a97f7 | bellard | static inline abi_ulong |
1111 | 43fff238 | bellard | get_sigframe(struct emulated_sigaction *ka, CPUState *regs, int framesize) |
1112 | 43fff238 | bellard | { |
1113 | 43fff238 | bellard | unsigned long sp = regs->regs[13]; |
1114 | 43fff238 | bellard | |
1115 | 43fff238 | bellard | /*
|
1116 | 43fff238 | bellard | * This is the X/Open sanctioned signal stack switching.
|
1117 | 43fff238 | bellard | */
|
1118 | a04e134a | ths | if ((ka->sa.sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
|
1119 | a04e134a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
1120 | 43fff238 | bellard | /*
|
1121 | 43fff238 | bellard | * ATPCS B01 mandates 8-byte alignment
|
1122 | 43fff238 | bellard | */
|
1123 | 579a97f7 | bellard | return (sp - framesize) & ~7; |
1124 | 43fff238 | bellard | } |
1125 | 43fff238 | bellard | |
1126 | 43fff238 | bellard | static int |
1127 | 43fff238 | bellard | setup_return(CPUState *env, struct emulated_sigaction *ka,
|
1128 | 992f48a0 | blueswir1 | abi_ulong *rc, void *frame, int usig) |
1129 | 43fff238 | bellard | { |
1130 | 992f48a0 | blueswir1 | abi_ulong handler = (abi_ulong)ka->sa._sa_handler; |
1131 | 992f48a0 | blueswir1 | abi_ulong retcode; |
1132 | 43fff238 | bellard | int thumb = 0; |
1133 | 43fff238 | bellard | #if defined(TARGET_CONFIG_CPU_32)
|
1134 | b5ff1b31 | bellard | #if 0
|
1135 | 992f48a0 | blueswir1 | abi_ulong cpsr = env->cpsr;
|
1136 | 43fff238 | bellard | |
1137 | 43fff238 | bellard | /*
|
1138 | 43fff238 | bellard | * Maybe we need to deliver a 32-bit signal to a 26-bit task.
|
1139 | 43fff238 | bellard | */
|
1140 | 43fff238 | bellard | if (ka->sa.sa_flags & SA_THIRTYTWO)
|
1141 | 43fff238 | bellard | cpsr = (cpsr & ~MODE_MASK) | USR_MODE;
|
1142 | 43fff238 | bellard | |
1143 | 43fff238 | bellard | #ifdef CONFIG_ARM_THUMB
|
1144 | 43fff238 | bellard | if (elf_hwcap & HWCAP_THUMB) {
|
1145 | 43fff238 | bellard | /*
|
1146 | 43fff238 | bellard | * The LSB of the handler determines if we're going to
|
1147 | 43fff238 | bellard | * be using THUMB or ARM mode for this signal handler.
|
1148 | 43fff238 | bellard | */
|
1149 | 43fff238 | bellard | thumb = handler & 1;
|
1150 | 43fff238 | bellard | |
1151 | 43fff238 | bellard | if (thumb)
|
1152 | 43fff238 | bellard | cpsr |= T_BIT;
|
1153 | 43fff238 | bellard | else
|
1154 | 43fff238 | bellard | cpsr &= ~T_BIT;
|
1155 | 43fff238 | bellard | }
|
1156 | a04e134a | ths | #endif /* CONFIG_ARM_THUMB */
|
1157 | a04e134a | ths | #endif /* 0 */ |
1158 | 43fff238 | bellard | #endif /* TARGET_CONFIG_CPU_32 */ |
1159 | 43fff238 | bellard | |
1160 | 43fff238 | bellard | if (ka->sa.sa_flags & TARGET_SA_RESTORER) {
|
1161 | 992f48a0 | blueswir1 | retcode = (abi_ulong)ka->sa.sa_restorer; |
1162 | 43fff238 | bellard | } else {
|
1163 | 43fff238 | bellard | unsigned int idx = thumb; |
1164 | 43fff238 | bellard | |
1165 | 43fff238 | bellard | if (ka->sa.sa_flags & TARGET_SA_SIGINFO)
|
1166 | 43fff238 | bellard | idx += 2;
|
1167 | 43fff238 | bellard | |
1168 | 43fff238 | bellard | if (__put_user(retcodes[idx], rc))
|
1169 | 43fff238 | bellard | return 1; |
1170 | 43fff238 | bellard | #if 0
|
1171 | 992f48a0 | blueswir1 | flush_icache_range((abi_ulong)rc,
|
1172 | 992f48a0 | blueswir1 | (abi_ulong)(rc + 1));
|
1173 | 43fff238 | bellard | #endif
|
1174 | 992f48a0 | blueswir1 | retcode = ((abi_ulong)rc) + thumb; |
1175 | 43fff238 | bellard | } |
1176 | 43fff238 | bellard | |
1177 | 43fff238 | bellard | env->regs[0] = usig;
|
1178 | 53a5960a | pbrook | env->regs[13] = h2g(frame);
|
1179 | 43fff238 | bellard | env->regs[14] = retcode;
|
1180 | 43fff238 | bellard | env->regs[15] = handler & (thumb ? ~1 : ~3); |
1181 | 43fff238 | bellard | |
1182 | b5ff1b31 | bellard | #if 0
|
1183 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1184 | 43fff238 | bellard | env->cpsr = cpsr;
|
1185 | 43fff238 | bellard | #endif
|
1186 | b5ff1b31 | bellard | #endif
|
1187 | 43fff238 | bellard | |
1188 | 43fff238 | bellard | return 0; |
1189 | 43fff238 | bellard | } |
1190 | 43fff238 | bellard | |
1191 | 579a97f7 | bellard | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */
|
1192 | 43fff238 | bellard | static void setup_frame(int usig, struct emulated_sigaction *ka, |
1193 | 43fff238 | bellard | target_sigset_t *set, CPUState *regs) |
1194 | 43fff238 | bellard | { |
1195 | 579a97f7 | bellard | struct sigframe *frame;
|
1196 | 579a97f7 | bellard | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
|
1197 | 9231944d | bellard | int i, err = 0; |
1198 | 43fff238 | bellard | |
1199 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1200 | 579a97f7 | bellard | return;
|
1201 | 579a97f7 | bellard | |
1202 | 43fff238 | bellard | err |= setup_sigcontext(&frame->sc, /*&frame->fpstate,*/ regs, set->sig[0]); |
1203 | 43fff238 | bellard | |
1204 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1205 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
1206 | 579a97f7 | bellard | goto end;
|
1207 | 43fff238 | bellard | } |
1208 | 43fff238 | bellard | |
1209 | 43fff238 | bellard | if (err == 0) |
1210 | 43fff238 | bellard | err = setup_return(regs, ka, &frame->retcode, frame, usig); |
1211 | 579a97f7 | bellard | |
1212 | 579a97f7 | bellard | end:
|
1213 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
1214 | 43fff238 | bellard | // return err;
|
1215 | 43fff238 | bellard | } |
1216 | 43fff238 | bellard | |
1217 | 579a97f7 | bellard | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
|
1218 | 5fafdf24 | ths | static void setup_rt_frame(int usig, struct emulated_sigaction *ka, |
1219 | 43fff238 | bellard | target_siginfo_t *info, |
1220 | 43fff238 | bellard | target_sigset_t *set, CPUState *env) |
1221 | 43fff238 | bellard | { |
1222 | 579a97f7 | bellard | struct rt_sigframe *frame;
|
1223 | 579a97f7 | bellard | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
|
1224 | a04e134a | ths | struct target_sigaltstack stack;
|
1225 | 9231944d | bellard | int i, err = 0; |
1226 | 43fff238 | bellard | |
1227 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1228 | edf779ff | bellard | return /* 1 */; |
1229 | edf779ff | bellard | |
1230 | 992f48a0 | blueswir1 | __put_user_error(&frame->info, (abi_ulong *)&frame->pinfo, err); |
1231 | 992f48a0 | blueswir1 | __put_user_error(&frame->uc, (abi_ulong *)&frame->puc, err); |
1232 | 43fff238 | bellard | err |= copy_siginfo_to_user(&frame->info, info); |
1233 | 43fff238 | bellard | |
1234 | 43fff238 | bellard | /* Clear all the bits of the ucontext we don't use. */
|
1235 | 53a5960a | pbrook | memset(&frame->uc, 0, offsetof(struct target_ucontext, tuc_mcontext)); |
1236 | 43fff238 | bellard | |
1237 | a04e134a | ths | memset(&stack, 0, sizeof(stack)); |
1238 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); |
1239 | a04e134a | ths | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); |
1240 | a04e134a | ths | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); |
1241 | 775b58d8 | bellard | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
|
1242 | a04e134a | ths | |
1243 | b8076a74 | bellard | err |= setup_sigcontext(&frame->uc.tuc_mcontext, /*&frame->fpstate,*/
|
1244 | 43fff238 | bellard | env, set->sig[0]);
|
1245 | 9231944d | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1246 | b8076a74 | bellard | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
|
1247 | 579a97f7 | bellard | goto end;
|
1248 | 9231944d | bellard | } |
1249 | 43fff238 | bellard | |
1250 | 43fff238 | bellard | if (err == 0) |
1251 | 43fff238 | bellard | err = setup_return(env, ka, &frame->retcode, frame, usig); |
1252 | 43fff238 | bellard | |
1253 | 43fff238 | bellard | if (err == 0) { |
1254 | 43fff238 | bellard | /*
|
1255 | 43fff238 | bellard | * For realtime signals we must also set the second and third
|
1256 | 43fff238 | bellard | * arguments for the signal handler.
|
1257 | 43fff238 | bellard | * -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06
|
1258 | 43fff238 | bellard | */
|
1259 | 992f48a0 | blueswir1 | env->regs[1] = (abi_ulong)frame->pinfo;
|
1260 | 992f48a0 | blueswir1 | env->regs[2] = (abi_ulong)frame->puc;
|
1261 | 43fff238 | bellard | } |
1262 | 43fff238 | bellard | |
1263 | 579a97f7 | bellard | end:
|
1264 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
1265 | 579a97f7 | bellard | |
1266 | 43fff238 | bellard | // return err;
|
1267 | 43fff238 | bellard | } |
1268 | 43fff238 | bellard | |
1269 | 43fff238 | bellard | static int |
1270 | 43fff238 | bellard | restore_sigcontext(CPUState *env, struct target_sigcontext *sc)
|
1271 | 43fff238 | bellard | { |
1272 | 43fff238 | bellard | int err = 0; |
1273 | b5ff1b31 | bellard | uint32_t cpsr; |
1274 | 43fff238 | bellard | |
1275 | 43fff238 | bellard | __get_user_error(env->regs[0], &sc->arm_r0, err);
|
1276 | 43fff238 | bellard | __get_user_error(env->regs[1], &sc->arm_r1, err);
|
1277 | 43fff238 | bellard | __get_user_error(env->regs[2], &sc->arm_r2, err);
|
1278 | 43fff238 | bellard | __get_user_error(env->regs[3], &sc->arm_r3, err);
|
1279 | 43fff238 | bellard | __get_user_error(env->regs[4], &sc->arm_r4, err);
|
1280 | 43fff238 | bellard | __get_user_error(env->regs[5], &sc->arm_r5, err);
|
1281 | 43fff238 | bellard | __get_user_error(env->regs[6], &sc->arm_r6, err);
|
1282 | 43fff238 | bellard | __get_user_error(env->regs[7], &sc->arm_r7, err);
|
1283 | 43fff238 | bellard | __get_user_error(env->regs[8], &sc->arm_r8, err);
|
1284 | 43fff238 | bellard | __get_user_error(env->regs[9], &sc->arm_r9, err);
|
1285 | 43fff238 | bellard | __get_user_error(env->regs[10], &sc->arm_r10, err);
|
1286 | 43fff238 | bellard | __get_user_error(env->regs[11], &sc->arm_fp, err);
|
1287 | 43fff238 | bellard | __get_user_error(env->regs[12], &sc->arm_ip, err);
|
1288 | 43fff238 | bellard | __get_user_error(env->regs[13], &sc->arm_sp, err);
|
1289 | 43fff238 | bellard | __get_user_error(env->regs[14], &sc->arm_lr, err);
|
1290 | 43fff238 | bellard | __get_user_error(env->regs[15], &sc->arm_pc, err);
|
1291 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1292 | b5ff1b31 | bellard | __get_user_error(cpsr, &sc->arm_cpsr, err); |
1293 | b5ff1b31 | bellard | cpsr_write(env, cpsr, 0xffffffff);
|
1294 | 43fff238 | bellard | #endif
|
1295 | 43fff238 | bellard | |
1296 | 43fff238 | bellard | err |= !valid_user_regs(env); |
1297 | 43fff238 | bellard | |
1298 | 43fff238 | bellard | return err;
|
1299 | 43fff238 | bellard | } |
1300 | 43fff238 | bellard | |
1301 | 43fff238 | bellard | long do_sigreturn(CPUState *env)
|
1302 | 43fff238 | bellard | { |
1303 | 43fff238 | bellard | struct sigframe *frame;
|
1304 | 43fff238 | bellard | target_sigset_t set; |
1305 | 43fff238 | bellard | sigset_t host_set; |
1306 | 9231944d | bellard | int i;
|
1307 | 43fff238 | bellard | |
1308 | 43fff238 | bellard | /*
|
1309 | 43fff238 | bellard | * Since we stacked the signal on a 64-bit boundary,
|
1310 | 43fff238 | bellard | * then 'sp' should be word aligned here. If it's
|
1311 | 43fff238 | bellard | * not, then the user is trying to mess with us.
|
1312 | 43fff238 | bellard | */
|
1313 | 43fff238 | bellard | if (env->regs[13] & 7) |
1314 | 43fff238 | bellard | goto badframe;
|
1315 | 43fff238 | bellard | |
1316 | 53a5960a | pbrook | frame = (struct sigframe *)g2h(env->regs[13]); |
1317 | 43fff238 | bellard | |
1318 | 43fff238 | bellard | #if 0
|
1319 | 43fff238 | bellard | if (verify_area(VERIFY_READ, frame, sizeof (*frame)))
|
1320 | 43fff238 | bellard | goto badframe;
|
1321 | 43fff238 | bellard | #endif
|
1322 | 9231944d | bellard | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1323 | 9231944d | bellard | goto badframe;
|
1324 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1325 | 9231944d | bellard | if (__get_user(set.sig[i], &frame->extramask[i - 1])) |
1326 | 9231944d | bellard | goto badframe;
|
1327 | 9231944d | bellard | } |
1328 | 43fff238 | bellard | |
1329 | 9231944d | bellard | target_to_host_sigset_internal(&host_set, &set); |
1330 | 43fff238 | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1331 | 43fff238 | bellard | |
1332 | 43fff238 | bellard | if (restore_sigcontext(env, &frame->sc))
|
1333 | 43fff238 | bellard | goto badframe;
|
1334 | 43fff238 | bellard | |
1335 | 43fff238 | bellard | #if 0
|
1336 | 43fff238 | bellard | /* Send SIGTRAP if we're single-stepping */
|
1337 | 43fff238 | bellard | if (ptrace_cancel_bpt(current))
|
1338 | 43fff238 | bellard | send_sig(SIGTRAP, current, 1);
|
1339 | 43fff238 | bellard | #endif
|
1340 | 43fff238 | bellard | return env->regs[0]; |
1341 | 43fff238 | bellard | |
1342 | 43fff238 | bellard | badframe:
|
1343 | 43fff238 | bellard | force_sig(SIGSEGV /* , current */);
|
1344 | 43fff238 | bellard | return 0; |
1345 | 43fff238 | bellard | } |
1346 | 43fff238 | bellard | |
1347 | 43fff238 | bellard | long do_rt_sigreturn(CPUState *env)
|
1348 | 43fff238 | bellard | { |
1349 | 43fff238 | bellard | struct rt_sigframe *frame;
|
1350 | 43fff238 | bellard | sigset_t host_set; |
1351 | 43fff238 | bellard | |
1352 | 43fff238 | bellard | /*
|
1353 | 43fff238 | bellard | * Since we stacked the signal on a 64-bit boundary,
|
1354 | 43fff238 | bellard | * then 'sp' should be word aligned here. If it's
|
1355 | 43fff238 | bellard | * not, then the user is trying to mess with us.
|
1356 | 43fff238 | bellard | */
|
1357 | 43fff238 | bellard | if (env->regs[13] & 7) |
1358 | 43fff238 | bellard | goto badframe;
|
1359 | 43fff238 | bellard | |
1360 | 43fff238 | bellard | frame = (struct rt_sigframe *)env->regs[13]; |
1361 | 43fff238 | bellard | |
1362 | 43fff238 | bellard | #if 0
|
1363 | 43fff238 | bellard | if (verify_area(VERIFY_READ, frame, sizeof (*frame)))
|
1364 | 43fff238 | bellard | goto badframe;
|
1365 | 43fff238 | bellard | #endif
|
1366 | b8076a74 | bellard | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); |
1367 | 43fff238 | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1368 | 43fff238 | bellard | |
1369 | b8076a74 | bellard | if (restore_sigcontext(env, &frame->uc.tuc_mcontext))
|
1370 | 43fff238 | bellard | goto badframe;
|
1371 | 43fff238 | bellard | |
1372 | 579a97f7 | bellard | if (do_sigaltstack(h2g(&frame->uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) |
1373 | a04e134a | ths | goto badframe;
|
1374 | a04e134a | ths | |
1375 | 43fff238 | bellard | #if 0
|
1376 | 43fff238 | bellard | /* Send SIGTRAP if we're single-stepping */
|
1377 | 43fff238 | bellard | if (ptrace_cancel_bpt(current))
|
1378 | 43fff238 | bellard | send_sig(SIGTRAP, current, 1);
|
1379 | 43fff238 | bellard | #endif
|
1380 | 43fff238 | bellard | return env->regs[0]; |
1381 | 43fff238 | bellard | |
1382 | 43fff238 | bellard | badframe:
|
1383 | 43fff238 | bellard | force_sig(SIGSEGV /* , current */);
|
1384 | 43fff238 | bellard | return 0; |
1385 | 43fff238 | bellard | } |
1386 | 43fff238 | bellard | |
1387 | 6d5e216d | bellard | #elif defined(TARGET_SPARC)
|
1388 | 80a9d035 | bellard | |
1389 | 6d5e216d | bellard | #define __SUNOS_MAXWIN 31 |
1390 | 6d5e216d | bellard | |
1391 | 6d5e216d | bellard | /* This is what SunOS does, so shall I. */
|
1392 | 6d5e216d | bellard | struct target_sigcontext {
|
1393 | 992f48a0 | blueswir1 | abi_ulong sigc_onstack; /* state to restore */
|
1394 | 6d5e216d | bellard | |
1395 | 992f48a0 | blueswir1 | abi_ulong sigc_mask; /* sigmask to restore */
|
1396 | 992f48a0 | blueswir1 | abi_ulong sigc_sp; /* stack pointer */
|
1397 | 992f48a0 | blueswir1 | abi_ulong sigc_pc; /* program counter */
|
1398 | 992f48a0 | blueswir1 | abi_ulong sigc_npc; /* next program counter */
|
1399 | 992f48a0 | blueswir1 | abi_ulong sigc_psr; /* for condition codes etc */
|
1400 | 992f48a0 | blueswir1 | abi_ulong sigc_g1; /* User uses these two registers */
|
1401 | 992f48a0 | blueswir1 | abi_ulong sigc_o0; /* within the trampoline code. */
|
1402 | 6d5e216d | bellard | |
1403 | 6d5e216d | bellard | /* Now comes information regarding the users window set
|
1404 | 6d5e216d | bellard | * at the time of the signal.
|
1405 | 6d5e216d | bellard | */
|
1406 | 992f48a0 | blueswir1 | abi_ulong sigc_oswins; /* outstanding windows */
|
1407 | 6d5e216d | bellard | |
1408 | 6d5e216d | bellard | /* stack ptrs for each regwin buf */
|
1409 | 6d5e216d | bellard | char *sigc_spbuf[__SUNOS_MAXWIN];
|
1410 | 6d5e216d | bellard | |
1411 | 6d5e216d | bellard | /* Windows to restore after signal */
|
1412 | 6d5e216d | bellard | struct {
|
1413 | 992f48a0 | blueswir1 | abi_ulong locals[8];
|
1414 | 992f48a0 | blueswir1 | abi_ulong ins[8];
|
1415 | 6d5e216d | bellard | } sigc_wbuf[__SUNOS_MAXWIN]; |
1416 | 6d5e216d | bellard | }; |
1417 | 6d5e216d | bellard | /* A Sparc stack frame */
|
1418 | 6d5e216d | bellard | struct sparc_stackf {
|
1419 | 992f48a0 | blueswir1 | abi_ulong locals[8];
|
1420 | 992f48a0 | blueswir1 | abi_ulong ins[6];
|
1421 | 6d5e216d | bellard | struct sparc_stackf *fp;
|
1422 | 992f48a0 | blueswir1 | abi_ulong callers_pc; |
1423 | 6d5e216d | bellard | char *structptr;
|
1424 | 992f48a0 | blueswir1 | abi_ulong xargs[6];
|
1425 | 992f48a0 | blueswir1 | abi_ulong xxargs[1];
|
1426 | 6d5e216d | bellard | }; |
1427 | 6d5e216d | bellard | |
1428 | 6d5e216d | bellard | typedef struct { |
1429 | 6d5e216d | bellard | struct {
|
1430 | 992f48a0 | blueswir1 | abi_ulong psr; |
1431 | 992f48a0 | blueswir1 | abi_ulong pc; |
1432 | 992f48a0 | blueswir1 | abi_ulong npc; |
1433 | 992f48a0 | blueswir1 | abi_ulong y; |
1434 | 992f48a0 | blueswir1 | abi_ulong u_regs[16]; /* globals and ins */ |
1435 | 6d5e216d | bellard | } si_regs; |
1436 | 6d5e216d | bellard | int si_mask;
|
1437 | 6d5e216d | bellard | } __siginfo_t; |
1438 | 6d5e216d | bellard | |
1439 | 6d5e216d | bellard | typedef struct { |
1440 | 6d5e216d | bellard | unsigned long si_float_regs [32]; |
1441 | 6d5e216d | bellard | unsigned long si_fsr; |
1442 | 6d5e216d | bellard | unsigned long si_fpqdepth; |
1443 | 6d5e216d | bellard | struct {
|
1444 | 6d5e216d | bellard | unsigned long *insn_addr; |
1445 | 6d5e216d | bellard | unsigned long insn; |
1446 | 6d5e216d | bellard | } si_fpqueue [16];
|
1447 | 74ccb34e | bellard | } qemu_siginfo_fpu_t; |
1448 | 6d5e216d | bellard | |
1449 | 6d5e216d | bellard | |
1450 | 6d5e216d | bellard | struct target_signal_frame {
|
1451 | 6d5e216d | bellard | struct sparc_stackf ss;
|
1452 | 6d5e216d | bellard | __siginfo_t info; |
1453 | 74ccb34e | bellard | qemu_siginfo_fpu_t *fpu_save; |
1454 | 992f48a0 | blueswir1 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
1455 | 992f48a0 | blueswir1 | abi_ulong extramask[TARGET_NSIG_WORDS - 1];
|
1456 | 992f48a0 | blueswir1 | abi_ulong extra_size; /* Should be 0 */
|
1457 | 74ccb34e | bellard | qemu_siginfo_fpu_t fpu_state; |
1458 | 6d5e216d | bellard | }; |
1459 | 6d5e216d | bellard | struct target_rt_signal_frame {
|
1460 | 6d5e216d | bellard | struct sparc_stackf ss;
|
1461 | 6d5e216d | bellard | siginfo_t info; |
1462 | 992f48a0 | blueswir1 | abi_ulong regs[20];
|
1463 | 6d5e216d | bellard | sigset_t mask; |
1464 | 74ccb34e | bellard | qemu_siginfo_fpu_t *fpu_save; |
1465 | 6d5e216d | bellard | unsigned int insns[2]; |
1466 | 6d5e216d | bellard | stack_t stack; |
1467 | 6d5e216d | bellard | unsigned int extra_size; /* Should be 0 */ |
1468 | 74ccb34e | bellard | qemu_siginfo_fpu_t fpu_state; |
1469 | 6d5e216d | bellard | }; |
1470 | 6d5e216d | bellard | |
1471 | e80cfcfc | bellard | #define UREG_O0 16 |
1472 | e80cfcfc | bellard | #define UREG_O6 22 |
1473 | e80cfcfc | bellard | #define UREG_I0 0 |
1474 | e80cfcfc | bellard | #define UREG_I1 1 |
1475 | e80cfcfc | bellard | #define UREG_I2 2 |
1476 | 5bfb56b2 | blueswir1 | #define UREG_I3 3 |
1477 | 5bfb56b2 | blueswir1 | #define UREG_I4 4 |
1478 | 5bfb56b2 | blueswir1 | #define UREG_I5 5 |
1479 | e80cfcfc | bellard | #define UREG_I6 6 |
1480 | e80cfcfc | bellard | #define UREG_I7 7 |
1481 | e80cfcfc | bellard | #define UREG_L0 8 |
1482 | 6d5e216d | bellard | #define UREG_FP UREG_I6
|
1483 | 6d5e216d | bellard | #define UREG_SP UREG_O6
|
1484 | 6d5e216d | bellard | |
1485 | 459a4017 | bellard | static inline abi_ulong get_sigframe(struct emulated_sigaction *sa, |
1486 | 459a4017 | bellard | CPUState *env, unsigned long framesize) |
1487 | 6d5e216d | bellard | { |
1488 | 459a4017 | bellard | abi_ulong sp; |
1489 | 6d5e216d | bellard | |
1490 | 6d5e216d | bellard | sp = env->regwptr[UREG_FP]; |
1491 | 6d5e216d | bellard | |
1492 | 6d5e216d | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
1493 | a04e134a | ths | if (sa->sa.sa_flags & TARGET_SA_ONSTACK) {
|
1494 | a04e134a | ths | if (!on_sig_stack(sp)
|
1495 | a04e134a | ths | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7))
|
1496 | a04e134a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
1497 | 6d5e216d | bellard | } |
1498 | 459a4017 | bellard | return sp - framesize;
|
1499 | 6d5e216d | bellard | } |
1500 | 6d5e216d | bellard | |
1501 | 6d5e216d | bellard | static int |
1502 | 992f48a0 | blueswir1 | setup___siginfo(__siginfo_t *si, CPUState *env, abi_ulong mask) |
1503 | 6d5e216d | bellard | { |
1504 | 6d5e216d | bellard | int err = 0, i; |
1505 | 6d5e216d | bellard | |
1506 | 6d5e216d | bellard | err |= __put_user(env->psr, &si->si_regs.psr); |
1507 | 6d5e216d | bellard | err |= __put_user(env->pc, &si->si_regs.pc); |
1508 | 6d5e216d | bellard | err |= __put_user(env->npc, &si->si_regs.npc); |
1509 | 6d5e216d | bellard | err |= __put_user(env->y, &si->si_regs.y); |
1510 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1511 | 6d5e216d | bellard | err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
1512 | 6d5e216d | bellard | } |
1513 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1514 | e80cfcfc | bellard | err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
|
1515 | 6d5e216d | bellard | } |
1516 | 6d5e216d | bellard | err |= __put_user(mask, &si->si_mask); |
1517 | 6d5e216d | bellard | return err;
|
1518 | 6d5e216d | bellard | } |
1519 | e80cfcfc | bellard | |
1520 | 80a9d035 | bellard | #if 0
|
1521 | 6d5e216d | bellard | static int
|
1522 | 6d5e216d | bellard | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
|
1523 | 6d5e216d | bellard | CPUState *env, unsigned long mask)
|
1524 | 6d5e216d | bellard | {
|
1525 | 6d5e216d | bellard | int err = 0;
|
1526 | 6d5e216d | bellard | |
1527 | 6d5e216d | bellard | err |= __put_user(mask, &sc->sigc_mask);
|
1528 | 6d5e216d | bellard | err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
|
1529 | 6d5e216d | bellard | err |= __put_user(env->pc, &sc->sigc_pc);
|
1530 | 6d5e216d | bellard | err |= __put_user(env->npc, &sc->sigc_npc);
|
1531 | 6d5e216d | bellard | err |= __put_user(env->psr, &sc->sigc_psr);
|
1532 | 6d5e216d | bellard | err |= __put_user(env->gregs[1], &sc->sigc_g1);
|
1533 | 6d5e216d | bellard | err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
|
1534 | 6d5e216d | bellard | |
1535 | 6d5e216d | bellard | return err;
|
1536 | 6d5e216d | bellard | }
|
1537 | 80a9d035 | bellard | #endif
|
1538 | 6d5e216d | bellard | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
1539 | 6d5e216d | bellard | |
1540 | 6d5e216d | bellard | static void setup_frame(int sig, struct emulated_sigaction *ka, |
1541 | 6d5e216d | bellard | target_sigset_t *set, CPUState *env) |
1542 | 6d5e216d | bellard | { |
1543 | 459a4017 | bellard | abi_ulong sf_addr; |
1544 | 6d5e216d | bellard | struct target_signal_frame *sf;
|
1545 | 6d5e216d | bellard | int sigframe_size, err, i;
|
1546 | 6d5e216d | bellard | |
1547 | 6d5e216d | bellard | /* 1. Make sure everything is clean */
|
1548 | 6d5e216d | bellard | //synchronize_user_stack();
|
1549 | 6d5e216d | bellard | |
1550 | 6d5e216d | bellard | sigframe_size = NF_ALIGNEDSZ; |
1551 | 459a4017 | bellard | sf_addr = get_sigframe(ka, env, sigframe_size); |
1552 | 6d5e216d | bellard | |
1553 | 459a4017 | bellard | sf = lock_user(VERIFY_WRITE, sf_addr, |
1554 | 459a4017 | bellard | sizeof(struct target_signal_frame), 0); |
1555 | 459a4017 | bellard | if (!sf)
|
1556 | 459a4017 | bellard | goto sigsegv;
|
1557 | 459a4017 | bellard | |
1558 | e80cfcfc | bellard | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
|
1559 | 6d5e216d | bellard | #if 0
|
1560 | 6d5e216d | bellard | if (invalid_frame_pointer(sf, sigframe_size))
|
1561 | 6d5e216d | bellard | goto sigill_and_return;
|
1562 | 6d5e216d | bellard | #endif
|
1563 | 6d5e216d | bellard | /* 2. Save the current process state */
|
1564 | 6d5e216d | bellard | err = setup___siginfo(&sf->info, env, set->sig[0]);
|
1565 | 6d5e216d | bellard | err |= __put_user(0, &sf->extra_size);
|
1566 | 6d5e216d | bellard | |
1567 | 6d5e216d | bellard | //err |= save_fpu_state(regs, &sf->fpu_state);
|
1568 | 6d5e216d | bellard | //err |= __put_user(&sf->fpu_state, &sf->fpu_save);
|
1569 | 6d5e216d | bellard | |
1570 | 6d5e216d | bellard | err |= __put_user(set->sig[0], &sf->info.si_mask);
|
1571 | 6d5e216d | bellard | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { |
1572 | 6d5e216d | bellard | err |= __put_user(set->sig[i + 1], &sf->extramask[i]);
|
1573 | 6d5e216d | bellard | } |
1574 | 6d5e216d | bellard | |
1575 | a315a145 | bellard | for (i = 0; i < 8; i++) { |
1576 | e80cfcfc | bellard | err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
1577 | 6d5e216d | bellard | } |
1578 | a315a145 | bellard | for (i = 0; i < 8; i++) { |
1579 | e80cfcfc | bellard | err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
1580 | 6d5e216d | bellard | } |
1581 | 6d5e216d | bellard | if (err)
|
1582 | 6d5e216d | bellard | goto sigsegv;
|
1583 | 6d5e216d | bellard | |
1584 | 6d5e216d | bellard | /* 3. signal handler back-trampoline and parameters */
|
1585 | 459a4017 | bellard | env->regwptr[UREG_FP] = sf_addr; |
1586 | 6d5e216d | bellard | env->regwptr[UREG_I0] = sig; |
1587 | 459a4017 | bellard | env->regwptr[UREG_I1] = sf_addr + |
1588 | 459a4017 | bellard | offsetof(struct target_signal_frame, info);
|
1589 | 459a4017 | bellard | env->regwptr[UREG_I2] = sf_addr + |
1590 | 459a4017 | bellard | offsetof(struct target_signal_frame, info);
|
1591 | 6d5e216d | bellard | |
1592 | 6d5e216d | bellard | /* 4. signal handler */
|
1593 | 459a4017 | bellard | env->pc = ka->sa._sa_handler; |
1594 | 6d5e216d | bellard | env->npc = (env->pc + 4);
|
1595 | 6d5e216d | bellard | /* 5. return to kernel instructions */
|
1596 | 6d5e216d | bellard | if (ka->sa.sa_restorer)
|
1597 | 459a4017 | bellard | env->regwptr[UREG_I7] = ka->sa.sa_restorer; |
1598 | 6d5e216d | bellard | else {
|
1599 | 775b58d8 | bellard | uint32_t val32; |
1600 | 459a4017 | bellard | |
1601 | 459a4017 | bellard | env->regwptr[UREG_I7] = sf_addr + |
1602 | 459a4017 | bellard | offsetof(struct target_signal_frame, insns) - 2 * 4; |
1603 | 6d5e216d | bellard | |
1604 | 6d5e216d | bellard | /* mov __NR_sigreturn, %g1 */
|
1605 | 775b58d8 | bellard | val32 = 0x821020d8;
|
1606 | 775b58d8 | bellard | err |= __put_user(val32, &sf->insns[0]);
|
1607 | 6d5e216d | bellard | |
1608 | 6d5e216d | bellard | /* t 0x10 */
|
1609 | 775b58d8 | bellard | val32 = 0x91d02010;
|
1610 | 775b58d8 | bellard | err |= __put_user(val32, &sf->insns[1]);
|
1611 | 6d5e216d | bellard | if (err)
|
1612 | 6d5e216d | bellard | goto sigsegv;
|
1613 | 6d5e216d | bellard | |
1614 | 6d5e216d | bellard | /* Flush instruction space. */
|
1615 | 6d5e216d | bellard | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
|
1616 | 80a9d035 | bellard | // tb_flush(env);
|
1617 | 6d5e216d | bellard | } |
1618 | 459a4017 | bellard | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
1619 | 6d5e216d | bellard | return;
|
1620 | 459a4017 | bellard | #if 0
|
1621 | 459a4017 | bellard | sigill_and_return:
|
1622 | 6d5e216d | bellard | force_sig(TARGET_SIGILL);
|
1623 | 459a4017 | bellard | #endif
|
1624 | 6d5e216d | bellard | sigsegv:
|
1625 | e80cfcfc | bellard | //fprintf(stderr, "force_sig\n");
|
1626 | 459a4017 | bellard | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
1627 | 6d5e216d | bellard | force_sig(TARGET_SIGSEGV); |
1628 | 6d5e216d | bellard | } |
1629 | 6d5e216d | bellard | static inline int |
1630 | 74ccb34e | bellard | restore_fpu_state(CPUState *env, qemu_siginfo_fpu_t *fpu) |
1631 | 6d5e216d | bellard | { |
1632 | 6d5e216d | bellard | int err;
|
1633 | 6d5e216d | bellard | #if 0
|
1634 | 6d5e216d | bellard | #ifdef CONFIG_SMP
|
1635 | 6d5e216d | bellard | if (current->flags & PF_USEDFPU)
|
1636 | 6d5e216d | bellard | regs->psr &= ~PSR_EF;
|
1637 | 6d5e216d | bellard | #else
|
1638 | 6d5e216d | bellard | if (current == last_task_used_math) {
|
1639 | 6d5e216d | bellard | last_task_used_math = 0;
|
1640 | 6d5e216d | bellard | regs->psr &= ~PSR_EF; |
1641 | 6d5e216d | bellard | } |
1642 | 6d5e216d | bellard | #endif
|
1643 | 6d5e216d | bellard | current->used_math = 1;
|
1644 | 6d5e216d | bellard | current->flags &= ~PF_USEDFPU; |
1645 | 6d5e216d | bellard | #endif
|
1646 | 6d5e216d | bellard | #if 0
|
1647 | 6d5e216d | bellard | if (verify_area (VERIFY_READ, fpu, sizeof(*fpu)))
|
1648 | 6d5e216d | bellard | return -EFAULT;
|
1649 | 6d5e216d | bellard | #endif
|
1650 | 6d5e216d | bellard | |
1651 | fafffaef | bellard | #if 0
|
1652 | fafffaef | bellard | /* XXX: incorrect */
|
1653 | 6d5e216d | bellard | err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0],
|
1654 | 6d5e216d | bellard | (sizeof(unsigned long) * 32));
|
1655 | fafffaef | bellard | #endif
|
1656 | 6d5e216d | bellard | err |= __get_user(env->fsr, &fpu->si_fsr); |
1657 | 6d5e216d | bellard | #if 0
|
1658 | 6d5e216d | bellard | err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
|
1659 | 6d5e216d | bellard | if (current->thread.fpqdepth != 0)
|
1660 | 6d5e216d | bellard | err |= __copy_from_user(¤t->thread.fpqueue[0],
|
1661 | 6d5e216d | bellard | &fpu->si_fpqueue[0],
|
1662 | 6d5e216d | bellard | ((sizeof(unsigned long) +
|
1663 | 6d5e216d | bellard | (sizeof(unsigned long *)))*16));
|
1664 | 6d5e216d | bellard | #endif
|
1665 | 6d5e216d | bellard | return err;
|
1666 | 6d5e216d | bellard | } |
1667 | 6d5e216d | bellard | |
1668 | 6d5e216d | bellard | |
1669 | 5fafdf24 | ths | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
1670 | 6d5e216d | bellard | target_siginfo_t *info, |
1671 | 6d5e216d | bellard | target_sigset_t *set, CPUState *env) |
1672 | 6d5e216d | bellard | { |
1673 | 6d5e216d | bellard | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
1674 | 6d5e216d | bellard | } |
1675 | 6d5e216d | bellard | |
1676 | 6d5e216d | bellard | long do_sigreturn(CPUState *env)
|
1677 | 6d5e216d | bellard | { |
1678 | 6d5e216d | bellard | struct target_signal_frame *sf;
|
1679 | e80cfcfc | bellard | uint32_t up_psr, pc, npc; |
1680 | 6d5e216d | bellard | target_sigset_t set; |
1681 | e80cfcfc | bellard | sigset_t host_set; |
1682 | 992f48a0 | blueswir1 | abi_ulong fpu_save; |
1683 | e80cfcfc | bellard | int err, i;
|
1684 | 6d5e216d | bellard | |
1685 | 53a5960a | pbrook | sf = (struct target_signal_frame *)g2h(env->regwptr[UREG_FP]);
|
1686 | 80a9d035 | bellard | #if 0
|
1687 | e80cfcfc | bellard | fprintf(stderr, "sigreturn\n");
|
1688 | e80cfcfc | bellard | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
|
1689 | 80a9d035 | bellard | #endif
|
1690 | e80cfcfc | bellard | //cpu_dump_state(env, stderr, fprintf, 0);
|
1691 | 6d5e216d | bellard | |
1692 | 6d5e216d | bellard | /* 1. Make sure we are not getting garbage from the user */
|
1693 | 6d5e216d | bellard | #if 0
|
1694 | 6d5e216d | bellard | if (verify_area (VERIFY_READ, sf, sizeof (*sf)))
|
1695 | 6d5e216d | bellard | goto segv_and_exit;
|
1696 | 6d5e216d | bellard | #endif
|
1697 | 6d5e216d | bellard | |
1698 | 6d5e216d | bellard | if (((uint) sf) & 3) |
1699 | 6d5e216d | bellard | goto segv_and_exit;
|
1700 | 6d5e216d | bellard | |
1701 | 6d5e216d | bellard | err = __get_user(pc, &sf->info.si_regs.pc); |
1702 | 6d5e216d | bellard | err |= __get_user(npc, &sf->info.si_regs.npc); |
1703 | 6d5e216d | bellard | |
1704 | 6d5e216d | bellard | if ((pc | npc) & 3) |
1705 | 6d5e216d | bellard | goto segv_and_exit;
|
1706 | 6d5e216d | bellard | |
1707 | 6d5e216d | bellard | /* 2. Restore the state */
|
1708 | e80cfcfc | bellard | err |= __get_user(up_psr, &sf->info.si_regs.psr); |
1709 | e80cfcfc | bellard | |
1710 | 6d5e216d | bellard | /* User can only change condition codes and FPU enabling in %psr. */
|
1711 | a315a145 | bellard | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
|
1712 | a315a145 | bellard | | (env->psr & ~(PSR_ICC /* | PSR_EF */));
|
1713 | a315a145 | bellard | |
1714 | a315a145 | bellard | env->pc = pc; |
1715 | a315a145 | bellard | env->npc = npc; |
1716 | e80cfcfc | bellard | err |= __get_user(env->y, &sf->info.si_regs.y); |
1717 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1718 | e80cfcfc | bellard | err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
1719 | e80cfcfc | bellard | } |
1720 | a315a145 | bellard | for (i=0; i < 8; i++) { |
1721 | e80cfcfc | bellard | err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
|
1722 | e80cfcfc | bellard | } |
1723 | 6d5e216d | bellard | |
1724 | 992f48a0 | blueswir1 | err |= __get_user(fpu_save, (abi_ulong *)&sf->fpu_save); |
1725 | 6d5e216d | bellard | |
1726 | e80cfcfc | bellard | //if (fpu_save)
|
1727 | e80cfcfc | bellard | // err |= restore_fpu_state(env, fpu_save);
|
1728 | 6d5e216d | bellard | |
1729 | 6d5e216d | bellard | /* This is pretty much atomic, no amount locking would prevent
|
1730 | 6d5e216d | bellard | * the races which exist anyways.
|
1731 | 6d5e216d | bellard | */
|
1732 | 6d5e216d | bellard | err |= __get_user(set.sig[0], &sf->info.si_mask);
|
1733 | e80cfcfc | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1734 | e80cfcfc | bellard | err |= (__get_user(set.sig[i], &sf->extramask[i - 1]));
|
1735 | e80cfcfc | bellard | } |
1736 | e80cfcfc | bellard | |
1737 | e80cfcfc | bellard | target_to_host_sigset_internal(&host_set, &set); |
1738 | e80cfcfc | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1739 | 6d5e216d | bellard | |
1740 | 6d5e216d | bellard | if (err)
|
1741 | 6d5e216d | bellard | goto segv_and_exit;
|
1742 | 6d5e216d | bellard | |
1743 | 6d5e216d | bellard | return env->regwptr[0]; |
1744 | 6d5e216d | bellard | |
1745 | 6d5e216d | bellard | segv_and_exit:
|
1746 | 6d5e216d | bellard | force_sig(TARGET_SIGSEGV); |
1747 | 6d5e216d | bellard | } |
1748 | 6d5e216d | bellard | |
1749 | 6d5e216d | bellard | long do_rt_sigreturn(CPUState *env)
|
1750 | 6d5e216d | bellard | { |
1751 | 6d5e216d | bellard | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
1752 | 6d5e216d | bellard | return -ENOSYS;
|
1753 | 6d5e216d | bellard | } |
1754 | 6d5e216d | bellard | |
1755 | 459a4017 | bellard | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
|
1756 | 5bfb56b2 | blueswir1 | #define MC_TSTATE 0 |
1757 | 5bfb56b2 | blueswir1 | #define MC_PC 1 |
1758 | 5bfb56b2 | blueswir1 | #define MC_NPC 2 |
1759 | 5bfb56b2 | blueswir1 | #define MC_Y 3 |
1760 | 5bfb56b2 | blueswir1 | #define MC_G1 4 |
1761 | 5bfb56b2 | blueswir1 | #define MC_G2 5 |
1762 | 5bfb56b2 | blueswir1 | #define MC_G3 6 |
1763 | 5bfb56b2 | blueswir1 | #define MC_G4 7 |
1764 | 5bfb56b2 | blueswir1 | #define MC_G5 8 |
1765 | 5bfb56b2 | blueswir1 | #define MC_G6 9 |
1766 | 5bfb56b2 | blueswir1 | #define MC_G7 10 |
1767 | 5bfb56b2 | blueswir1 | #define MC_O0 11 |
1768 | 5bfb56b2 | blueswir1 | #define MC_O1 12 |
1769 | 5bfb56b2 | blueswir1 | #define MC_O2 13 |
1770 | 5bfb56b2 | blueswir1 | #define MC_O3 14 |
1771 | 5bfb56b2 | blueswir1 | #define MC_O4 15 |
1772 | 5bfb56b2 | blueswir1 | #define MC_O5 16 |
1773 | 5bfb56b2 | blueswir1 | #define MC_O6 17 |
1774 | 5bfb56b2 | blueswir1 | #define MC_O7 18 |
1775 | 5bfb56b2 | blueswir1 | #define MC_NGREG 19 |
1776 | 5bfb56b2 | blueswir1 | |
1777 | 992f48a0 | blueswir1 | typedef abi_ulong target_mc_greg_t;
|
1778 | 5bfb56b2 | blueswir1 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG];
|
1779 | 5bfb56b2 | blueswir1 | |
1780 | 5bfb56b2 | blueswir1 | struct target_mc_fq {
|
1781 | 992f48a0 | blueswir1 | abi_ulong *mcfq_addr; |
1782 | 5bfb56b2 | blueswir1 | uint32_t mcfq_insn; |
1783 | 5bfb56b2 | blueswir1 | }; |
1784 | 5bfb56b2 | blueswir1 | |
1785 | 5bfb56b2 | blueswir1 | struct target_mc_fpu {
|
1786 | 5bfb56b2 | blueswir1 | union {
|
1787 | 5bfb56b2 | blueswir1 | uint32_t sregs[32];
|
1788 | 5bfb56b2 | blueswir1 | uint64_t dregs[32];
|
1789 | 5bfb56b2 | blueswir1 | //uint128_t qregs[16];
|
1790 | 5bfb56b2 | blueswir1 | } mcfpu_fregs; |
1791 | 992f48a0 | blueswir1 | abi_ulong mcfpu_fsr; |
1792 | 992f48a0 | blueswir1 | abi_ulong mcfpu_fprs; |
1793 | 992f48a0 | blueswir1 | abi_ulong mcfpu_gsr; |
1794 | 5bfb56b2 | blueswir1 | struct target_mc_fq *mcfpu_fq;
|
1795 | 5bfb56b2 | blueswir1 | unsigned char mcfpu_qcnt; |
1796 | 5bfb56b2 | blueswir1 | unsigned char mcfpu_qentsz; |
1797 | 5bfb56b2 | blueswir1 | unsigned char mcfpu_enab; |
1798 | 5bfb56b2 | blueswir1 | }; |
1799 | 5bfb56b2 | blueswir1 | typedef struct target_mc_fpu target_mc_fpu_t; |
1800 | 5bfb56b2 | blueswir1 | |
1801 | 5bfb56b2 | blueswir1 | typedef struct { |
1802 | 5bfb56b2 | blueswir1 | target_mc_gregset_t mc_gregs; |
1803 | 5bfb56b2 | blueswir1 | target_mc_greg_t mc_fp; |
1804 | 5bfb56b2 | blueswir1 | target_mc_greg_t mc_i7; |
1805 | 5bfb56b2 | blueswir1 | target_mc_fpu_t mc_fpregs; |
1806 | 5bfb56b2 | blueswir1 | } target_mcontext_t; |
1807 | 5bfb56b2 | blueswir1 | |
1808 | 5bfb56b2 | blueswir1 | struct target_ucontext {
|
1809 | 5bfb56b2 | blueswir1 | struct target_ucontext *uc_link;
|
1810 | 992f48a0 | blueswir1 | abi_ulong uc_flags; |
1811 | 5bfb56b2 | blueswir1 | target_sigset_t uc_sigmask; |
1812 | 5bfb56b2 | blueswir1 | target_mcontext_t uc_mcontext; |
1813 | 5bfb56b2 | blueswir1 | }; |
1814 | 5bfb56b2 | blueswir1 | |
1815 | 5bfb56b2 | blueswir1 | /* A V9 register window */
|
1816 | 5bfb56b2 | blueswir1 | struct target_reg_window {
|
1817 | 992f48a0 | blueswir1 | abi_ulong locals[8];
|
1818 | 992f48a0 | blueswir1 | abi_ulong ins[8];
|
1819 | 5bfb56b2 | blueswir1 | }; |
1820 | 5bfb56b2 | blueswir1 | |
1821 | 5bfb56b2 | blueswir1 | #define TARGET_STACK_BIAS 2047 |
1822 | 5bfb56b2 | blueswir1 | |
1823 | 5bfb56b2 | blueswir1 | /* {set, get}context() needed for 64-bit SparcLinux userland. */
|
1824 | 5bfb56b2 | blueswir1 | void sparc64_set_context(CPUSPARCState *env)
|
1825 | 5bfb56b2 | blueswir1 | { |
1826 | 459a4017 | bellard | abi_ulong ucp_addr; |
1827 | 459a4017 | bellard | struct target_ucontext *ucp;
|
1828 | 5bfb56b2 | blueswir1 | target_mc_gregset_t *grp; |
1829 | 992f48a0 | blueswir1 | abi_ulong pc, npc, tstate; |
1830 | 459a4017 | bellard | abi_ulong fp, i7, w_addr; |
1831 | 5bfb56b2 | blueswir1 | unsigned char fenab; |
1832 | 5bfb56b2 | blueswir1 | int err;
|
1833 | 5bfb56b2 | blueswir1 | unsigned int i; |
1834 | 5bfb56b2 | blueswir1 | |
1835 | 459a4017 | bellard | ucp_addr = env->regwptr[UREG_I0]; |
1836 | 459a4017 | bellard | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) |
1837 | 459a4017 | bellard | goto do_sigsegv;
|
1838 | 5bfb56b2 | blueswir1 | grp = &ucp->uc_mcontext.mc_gregs; |
1839 | 579a97f7 | bellard | err = __get_user(pc, &((*grp)[MC_PC])); |
1840 | 579a97f7 | bellard | err |= __get_user(npc, &((*grp)[MC_NPC])); |
1841 | 5bfb56b2 | blueswir1 | if (err || ((pc | npc) & 3)) |
1842 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
1843 | 5bfb56b2 | blueswir1 | if (env->regwptr[UREG_I1]) {
|
1844 | 5bfb56b2 | blueswir1 | target_sigset_t target_set; |
1845 | 5bfb56b2 | blueswir1 | sigset_t set; |
1846 | 5bfb56b2 | blueswir1 | |
1847 | 5bfb56b2 | blueswir1 | if (TARGET_NSIG_WORDS == 1) { |
1848 | 579a97f7 | bellard | if (__get_user(target_set.sig[0], &ucp->uc_sigmask.sig[0])) |
1849 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
1850 | 5bfb56b2 | blueswir1 | } else {
|
1851 | 459a4017 | bellard | abi_ulong *src, *dst; |
1852 | 459a4017 | bellard | src = ucp->uc_sigmask.sig; |
1853 | 459a4017 | bellard | dst = target_set.sig; |
1854 | 992f48a0 | blueswir1 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
1855 | 5bfb56b2 | blueswir1 | i++, dst++, src++) |
1856 | 459a4017 | bellard | err |= __get_user(*dst, src); |
1857 | 5bfb56b2 | blueswir1 | if (err)
|
1858 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
1859 | 5bfb56b2 | blueswir1 | } |
1860 | 5bfb56b2 | blueswir1 | target_to_host_sigset_internal(&set, &target_set); |
1861 | 5bfb56b2 | blueswir1 | sigprocmask(SIG_SETMASK, &set, NULL);
|
1862 | 5bfb56b2 | blueswir1 | } |
1863 | 5bfb56b2 | blueswir1 | env->pc = pc; |
1864 | 5bfb56b2 | blueswir1 | env->npc = npc; |
1865 | 579a97f7 | bellard | err |= __get_user(env->y, &((*grp)[MC_Y])); |
1866 | 579a97f7 | bellard | err |= __get_user(tstate, &((*grp)[MC_TSTATE])); |
1867 | 5bfb56b2 | blueswir1 | env->asi = (tstate >> 24) & 0xff; |
1868 | 5bfb56b2 | blueswir1 | PUT_CCR(env, tstate >> 32);
|
1869 | 5bfb56b2 | blueswir1 | PUT_CWP64(env, tstate & 0x1f);
|
1870 | 579a97f7 | bellard | err |= __get_user(env->gregs[1], (&(*grp)[MC_G1]));
|
1871 | 579a97f7 | bellard | err |= __get_user(env->gregs[2], (&(*grp)[MC_G2]));
|
1872 | 579a97f7 | bellard | err |= __get_user(env->gregs[3], (&(*grp)[MC_G3]));
|
1873 | 579a97f7 | bellard | err |= __get_user(env->gregs[4], (&(*grp)[MC_G4]));
|
1874 | 579a97f7 | bellard | err |= __get_user(env->gregs[5], (&(*grp)[MC_G5]));
|
1875 | 579a97f7 | bellard | err |= __get_user(env->gregs[6], (&(*grp)[MC_G6]));
|
1876 | 579a97f7 | bellard | err |= __get_user(env->gregs[7], (&(*grp)[MC_G7]));
|
1877 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); |
1878 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); |
1879 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); |
1880 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); |
1881 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); |
1882 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); |
1883 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); |
1884 | 579a97f7 | bellard | err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); |
1885 | 579a97f7 | bellard | |
1886 | 579a97f7 | bellard | err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp)); |
1887 | 579a97f7 | bellard | err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7)); |
1888 | 579a97f7 | bellard | |
1889 | 459a4017 | bellard | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
1890 | 459a4017 | bellard | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), |
1891 | 459a4017 | bellard | abi_ulong) != 0)
|
1892 | 459a4017 | bellard | goto do_sigsegv;
|
1893 | 459a4017 | bellard | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), |
1894 | 459a4017 | bellard | abi_ulong) != 0)
|
1895 | 459a4017 | bellard | goto do_sigsegv;
|
1896 | 579a97f7 | bellard | err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab)); |
1897 | 579a97f7 | bellard | err |= __get_user(env->fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs)); |
1898 | 459a4017 | bellard | { |
1899 | 459a4017 | bellard | uint32_t *src, *dst; |
1900 | 459a4017 | bellard | src = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
1901 | 459a4017 | bellard | dst = env->fpr; |
1902 | 459a4017 | bellard | /* XXX: check that the CPU storage is the same as user context */
|
1903 | 459a4017 | bellard | for (i = 0; i < 64; i++, dst++, src++) |
1904 | 459a4017 | bellard | err |= __get_user(*dst, src); |
1905 | 459a4017 | bellard | } |
1906 | 579a97f7 | bellard | err |= __get_user(env->fsr, |
1907 | 579a97f7 | bellard | &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr)); |
1908 | 579a97f7 | bellard | err |= __get_user(env->gsr, |
1909 | 579a97f7 | bellard | &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr)); |
1910 | 5bfb56b2 | blueswir1 | if (err)
|
1911 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
1912 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 0);
|
1913 | 5bfb56b2 | blueswir1 | return;
|
1914 | 5bfb56b2 | blueswir1 | do_sigsegv:
|
1915 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 0);
|
1916 | 5bfb56b2 | blueswir1 | force_sig(SIGSEGV); |
1917 | 5bfb56b2 | blueswir1 | } |
1918 | 5bfb56b2 | blueswir1 | |
1919 | 5bfb56b2 | blueswir1 | void sparc64_get_context(CPUSPARCState *env)
|
1920 | 5bfb56b2 | blueswir1 | { |
1921 | 459a4017 | bellard | abi_ulong ucp_addr; |
1922 | 459a4017 | bellard | struct target_ucontext *ucp;
|
1923 | 5bfb56b2 | blueswir1 | target_mc_gregset_t *grp; |
1924 | 5bfb56b2 | blueswir1 | target_mcontext_t *mcp; |
1925 | 459a4017 | bellard | abi_ulong fp, i7, w_addr; |
1926 | 5bfb56b2 | blueswir1 | int err;
|
1927 | 5bfb56b2 | blueswir1 | unsigned int i; |
1928 | 5bfb56b2 | blueswir1 | target_sigset_t target_set; |
1929 | 5bfb56b2 | blueswir1 | sigset_t set; |
1930 | 5bfb56b2 | blueswir1 | |
1931 | 459a4017 | bellard | ucp_addr = env->regwptr[UREG_I0]; |
1932 | 459a4017 | bellard | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) |
1933 | 459a4017 | bellard | goto do_sigsegv;
|
1934 | 459a4017 | bellard | |
1935 | 5bfb56b2 | blueswir1 | mcp = &ucp->uc_mcontext; |
1936 | 5bfb56b2 | blueswir1 | grp = &mcp->mc_gregs; |
1937 | 5bfb56b2 | blueswir1 | |
1938 | 5bfb56b2 | blueswir1 | /* Skip over the trap instruction, first. */
|
1939 | 5bfb56b2 | blueswir1 | env->pc = env->npc; |
1940 | 5bfb56b2 | blueswir1 | env->npc += 4;
|
1941 | 5bfb56b2 | blueswir1 | |
1942 | 5bfb56b2 | blueswir1 | err = 0;
|
1943 | 5bfb56b2 | blueswir1 | |
1944 | 5bfb56b2 | blueswir1 | sigprocmask(0, NULL, &set); |
1945 | 5bfb56b2 | blueswir1 | host_to_target_sigset_internal(&target_set, &set); |
1946 | 459a4017 | bellard | if (TARGET_NSIG_WORDS == 1) { |
1947 | 579a97f7 | bellard | err |= __put_user(target_set.sig[0],
|
1948 | 579a97f7 | bellard | (abi_ulong *)&ucp->uc_sigmask); |
1949 | 459a4017 | bellard | } else {
|
1950 | 459a4017 | bellard | abi_ulong *src, *dst; |
1951 | 459a4017 | bellard | src = target_set.sig; |
1952 | 459a4017 | bellard | dst = ucp->uc_sigmask.sig; |
1953 | 992f48a0 | blueswir1 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
1954 | 5bfb56b2 | blueswir1 | i++, dst++, src++) |
1955 | 459a4017 | bellard | err |= __put_user(*src, dst); |
1956 | 5bfb56b2 | blueswir1 | if (err)
|
1957 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
1958 | 5bfb56b2 | blueswir1 | } |
1959 | 5bfb56b2 | blueswir1 | |
1960 | 459a4017 | bellard | /* XXX: tstate must be saved properly */
|
1961 | 459a4017 | bellard | // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE]));
|
1962 | 579a97f7 | bellard | err |= __put_user(env->pc, &((*grp)[MC_PC])); |
1963 | 579a97f7 | bellard | err |= __put_user(env->npc, &((*grp)[MC_NPC])); |
1964 | 579a97f7 | bellard | err |= __put_user(env->y, &((*grp)[MC_Y])); |
1965 | 579a97f7 | bellard | err |= __put_user(env->gregs[1], &((*grp)[MC_G1]));
|
1966 | 579a97f7 | bellard | err |= __put_user(env->gregs[2], &((*grp)[MC_G2]));
|
1967 | 579a97f7 | bellard | err |= __put_user(env->gregs[3], &((*grp)[MC_G3]));
|
1968 | 579a97f7 | bellard | err |= __put_user(env->gregs[4], &((*grp)[MC_G4]));
|
1969 | 579a97f7 | bellard | err |= __put_user(env->gregs[5], &((*grp)[MC_G5]));
|
1970 | 579a97f7 | bellard | err |= __put_user(env->gregs[6], &((*grp)[MC_G6]));
|
1971 | 579a97f7 | bellard | err |= __put_user(env->gregs[7], &((*grp)[MC_G7]));
|
1972 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); |
1973 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); |
1974 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); |
1975 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); |
1976 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); |
1977 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); |
1978 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); |
1979 | 579a97f7 | bellard | err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); |
1980 | 579a97f7 | bellard | |
1981 | 459a4017 | bellard | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
1982 | 459a4017 | bellard | fp = i7 = 0;
|
1983 | 459a4017 | bellard | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), |
1984 | 459a4017 | bellard | abi_ulong) != 0)
|
1985 | 459a4017 | bellard | goto do_sigsegv;
|
1986 | 459a4017 | bellard | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), |
1987 | 459a4017 | bellard | abi_ulong) != 0)
|
1988 | 459a4017 | bellard | goto do_sigsegv;
|
1989 | 579a97f7 | bellard | err |= __put_user(fp, &(mcp->mc_fp)); |
1990 | 579a97f7 | bellard | err |= __put_user(i7, &(mcp->mc_i7)); |
1991 | 5bfb56b2 | blueswir1 | |
1992 | 459a4017 | bellard | { |
1993 | 459a4017 | bellard | uint32_t *src, *dst; |
1994 | 459a4017 | bellard | src = env->fpr; |
1995 | 459a4017 | bellard | dst = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; |
1996 | 459a4017 | bellard | /* XXX: check that the CPU storage is the same as user context */
|
1997 | 459a4017 | bellard | for (i = 0; i < 64; i++, dst++, src++) |
1998 | 459a4017 | bellard | err |= __put_user(*src, dst); |
1999 | 459a4017 | bellard | } |
2000 | 579a97f7 | bellard | err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2001 | 579a97f7 | bellard | err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); |
2002 | 579a97f7 | bellard | err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); |
2003 | 5bfb56b2 | blueswir1 | |
2004 | 5bfb56b2 | blueswir1 | if (err)
|
2005 | 5bfb56b2 | blueswir1 | goto do_sigsegv;
|
2006 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 1);
|
2007 | 5bfb56b2 | blueswir1 | return;
|
2008 | 5bfb56b2 | blueswir1 | do_sigsegv:
|
2009 | 459a4017 | bellard | unlock_user_struct(ucp, ucp_addr, 1);
|
2010 | 5bfb56b2 | blueswir1 | force_sig(SIGSEGV); |
2011 | 5bfb56b2 | blueswir1 | } |
2012 | 5bfb56b2 | blueswir1 | #endif
|
2013 | d26bc211 | ths | #elif defined(TARGET_ABI_MIPSN64)
|
2014 | 540635ba | ths | |
2015 | 540635ba | ths | # warning signal handling not implemented
|
2016 | 540635ba | ths | |
2017 | 540635ba | ths | static void setup_frame(int sig, struct emulated_sigaction *ka, |
2018 | 540635ba | ths | target_sigset_t *set, CPUState *env) |
2019 | 540635ba | ths | { |
2020 | 540635ba | ths | fprintf(stderr, "setup_frame: not implemented\n");
|
2021 | 540635ba | ths | } |
2022 | 540635ba | ths | |
2023 | 540635ba | ths | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
2024 | 540635ba | ths | target_siginfo_t *info, |
2025 | 540635ba | ths | target_sigset_t *set, CPUState *env) |
2026 | 540635ba | ths | { |
2027 | 540635ba | ths | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
2028 | 540635ba | ths | } |
2029 | 540635ba | ths | |
2030 | 540635ba | ths | long do_sigreturn(CPUState *env)
|
2031 | 540635ba | ths | { |
2032 | 540635ba | ths | fprintf(stderr, "do_sigreturn: not implemented\n");
|
2033 | 540635ba | ths | return -ENOSYS;
|
2034 | 540635ba | ths | } |
2035 | 540635ba | ths | |
2036 | 540635ba | ths | long do_rt_sigreturn(CPUState *env)
|
2037 | 540635ba | ths | { |
2038 | 540635ba | ths | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
2039 | 540635ba | ths | return -ENOSYS;
|
2040 | 540635ba | ths | } |
2041 | 540635ba | ths | |
2042 | d26bc211 | ths | #elif defined(TARGET_ABI_MIPSN32)
|
2043 | 540635ba | ths | |
2044 | 540635ba | ths | # warning signal handling not implemented
|
2045 | 540635ba | ths | |
2046 | 540635ba | ths | static void setup_frame(int sig, struct emulated_sigaction *ka, |
2047 | 540635ba | ths | target_sigset_t *set, CPUState *env) |
2048 | 540635ba | ths | { |
2049 | 540635ba | ths | fprintf(stderr, "setup_frame: not implemented\n");
|
2050 | 540635ba | ths | } |
2051 | 540635ba | ths | |
2052 | 540635ba | ths | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
2053 | 540635ba | ths | target_siginfo_t *info, |
2054 | 540635ba | ths | target_sigset_t *set, CPUState *env) |
2055 | 540635ba | ths | { |
2056 | 540635ba | ths | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
2057 | 540635ba | ths | } |
2058 | 540635ba | ths | |
2059 | 540635ba | ths | long do_sigreturn(CPUState *env)
|
2060 | 540635ba | ths | { |
2061 | 540635ba | ths | fprintf(stderr, "do_sigreturn: not implemented\n");
|
2062 | 540635ba | ths | return -ENOSYS;
|
2063 | 540635ba | ths | } |
2064 | 540635ba | ths | |
2065 | 540635ba | ths | long do_rt_sigreturn(CPUState *env)
|
2066 | 540635ba | ths | { |
2067 | 540635ba | ths | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
2068 | 540635ba | ths | return -ENOSYS;
|
2069 | 540635ba | ths | } |
2070 | 540635ba | ths | |
2071 | d26bc211 | ths | #elif defined(TARGET_ABI_MIPSO32)
|
2072 | 106ec879 | bellard | |
2073 | 106ec879 | bellard | struct target_sigcontext {
|
2074 | 106ec879 | bellard | uint32_t sc_regmask; /* Unused */
|
2075 | 106ec879 | bellard | uint32_t sc_status; |
2076 | 106ec879 | bellard | uint64_t sc_pc; |
2077 | 106ec879 | bellard | uint64_t sc_regs[32];
|
2078 | 106ec879 | bellard | uint64_t sc_fpregs[32];
|
2079 | 106ec879 | bellard | uint32_t sc_ownedfp; /* Unused */
|
2080 | 106ec879 | bellard | uint32_t sc_fpc_csr; |
2081 | 106ec879 | bellard | uint32_t sc_fpc_eir; /* Unused */
|
2082 | 106ec879 | bellard | uint32_t sc_used_math; |
2083 | 106ec879 | bellard | uint32_t sc_dsp; /* dsp status, was sc_ssflags */
|
2084 | 106ec879 | bellard | uint64_t sc_mdhi; |
2085 | 106ec879 | bellard | uint64_t sc_mdlo; |
2086 | 106ec879 | bellard | target_ulong sc_hi1; /* Was sc_cause */
|
2087 | 106ec879 | bellard | target_ulong sc_lo1; /* Was sc_badvaddr */
|
2088 | 106ec879 | bellard | target_ulong sc_hi2; /* Was sc_sigset[4] */
|
2089 | 106ec879 | bellard | target_ulong sc_lo2; |
2090 | 106ec879 | bellard | target_ulong sc_hi3; |
2091 | 106ec879 | bellard | target_ulong sc_lo3; |
2092 | 106ec879 | bellard | }; |
2093 | 106ec879 | bellard | |
2094 | 106ec879 | bellard | struct sigframe {
|
2095 | 106ec879 | bellard | uint32_t sf_ass[4]; /* argument save space for o32 */ |
2096 | 106ec879 | bellard | uint32_t sf_code[2]; /* signal trampoline */ |
2097 | 106ec879 | bellard | struct target_sigcontext sf_sc;
|
2098 | 106ec879 | bellard | target_sigset_t sf_mask; |
2099 | 106ec879 | bellard | }; |
2100 | 106ec879 | bellard | |
2101 | 106ec879 | bellard | /* Install trampoline to jump back from signal handler */
|
2102 | 106ec879 | bellard | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) |
2103 | 106ec879 | bellard | { |
2104 | 106ec879 | bellard | int err;
|
2105 | 106ec879 | bellard | |
2106 | 106ec879 | bellard | /*
|
2107 | 106ec879 | bellard | * Set up the return code ...
|
2108 | 106ec879 | bellard | *
|
2109 | 106ec879 | bellard | * li v0, __NR__foo_sigreturn
|
2110 | 106ec879 | bellard | * syscall
|
2111 | 106ec879 | bellard | */
|
2112 | 106ec879 | bellard | |
2113 | 106ec879 | bellard | err = __put_user(0x24020000 + syscall, tramp + 0); |
2114 | 106ec879 | bellard | err |= __put_user(0x0000000c , tramp + 1); |
2115 | 106ec879 | bellard | /* flush_cache_sigtramp((unsigned long) tramp); */
|
2116 | 106ec879 | bellard | return err;
|
2117 | 106ec879 | bellard | } |
2118 | 106ec879 | bellard | |
2119 | 106ec879 | bellard | static inline int |
2120 | 106ec879 | bellard | setup_sigcontext(CPUState *regs, struct target_sigcontext *sc)
|
2121 | 106ec879 | bellard | { |
2122 | 106ec879 | bellard | int err = 0; |
2123 | 106ec879 | bellard | |
2124 | ead9360e | ths | err |= __put_user(regs->PC[regs->current_tc], &sc->sc_pc); |
2125 | 106ec879 | bellard | |
2126 | ead9360e | ths | #define save_gp_reg(i) do { \ |
2127 | ead9360e | ths | err |= __put_user(regs->gpr[i][regs->current_tc], &sc->sc_regs[i]); \ |
2128 | 106ec879 | bellard | } while(0) |
2129 | 106ec879 | bellard | __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2); |
2130 | 106ec879 | bellard | save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6); |
2131 | 106ec879 | bellard | save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10); |
2132 | 106ec879 | bellard | save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14); |
2133 | 106ec879 | bellard | save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18); |
2134 | 106ec879 | bellard | save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22); |
2135 | 106ec879 | bellard | save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26); |
2136 | 106ec879 | bellard | save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30); |
2137 | 106ec879 | bellard | save_gp_reg(31);
|
2138 | 388bb21a | ths | #undef save_gp_reg
|
2139 | 106ec879 | bellard | |
2140 | ead9360e | ths | err |= __put_user(regs->HI[0][regs->current_tc], &sc->sc_mdhi);
|
2141 | ead9360e | ths | err |= __put_user(regs->LO[0][regs->current_tc], &sc->sc_mdlo);
|
2142 | 106ec879 | bellard | |
2143 | 106ec879 | bellard | /* Not used yet, but might be useful if we ever have DSP suppport */
|
2144 | 106ec879 | bellard | #if 0
|
2145 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2146 | 106ec879 | bellard | err |= __put_user(mfhi1(), &sc->sc_hi1);
|
2147 | 106ec879 | bellard | err |= __put_user(mflo1(), &sc->sc_lo1);
|
2148 | 106ec879 | bellard | err |= __put_user(mfhi2(), &sc->sc_hi2);
|
2149 | 106ec879 | bellard | err |= __put_user(mflo2(), &sc->sc_lo2);
|
2150 | 106ec879 | bellard | err |= __put_user(mfhi3(), &sc->sc_hi3);
|
2151 | 106ec879 | bellard | err |= __put_user(mflo3(), &sc->sc_lo3);
|
2152 | 106ec879 | bellard | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
|
2153 | 106ec879 | bellard | }
|
2154 | 106ec879 | bellard | /* same with 64 bit */
|
2155 | 388bb21a | ths | #ifdef CONFIG_64BIT
|
2156 | 106ec879 | bellard | err |= __put_user(regs->hi, &sc->sc_hi[0]);
|
2157 | 106ec879 | bellard | err |= __put_user(regs->lo, &sc->sc_lo[0]);
|
2158 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2159 | 106ec879 | bellard | err |= __put_user(mfhi1(), &sc->sc_hi[1]);
|
2160 | 106ec879 | bellard | err |= __put_user(mflo1(), &sc->sc_lo[1]);
|
2161 | 106ec879 | bellard | err |= __put_user(mfhi2(), &sc->sc_hi[2]);
|
2162 | 106ec879 | bellard | err |= __put_user(mflo2(), &sc->sc_lo[2]);
|
2163 | 106ec879 | bellard | err |= __put_user(mfhi3(), &sc->sc_hi[3]);
|
2164 | 106ec879 | bellard | err |= __put_user(mflo3(), &sc->sc_lo[3]);
|
2165 | 106ec879 | bellard | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
|
2166 | 106ec879 | bellard | }
|
2167 | 388bb21a | ths | #endif
|
2168 | 388bb21a | ths | #endif
|
2169 | 106ec879 | bellard | |
2170 | 388bb21a | ths | #if 0
|
2171 | 106ec879 | bellard | err |= __put_user(!!used_math(), &sc->sc_used_math);
|
2172 | 106ec879 | bellard | |
2173 | 106ec879 | bellard | if (!used_math())
|
2174 | 106ec879 | bellard | goto out;
|
2175 | 106ec879 | bellard | |
2176 | 106ec879 | bellard | /*
|
2177 | 106ec879 | bellard | * Save FPU state to signal context. Signal handler will "inherit"
|
2178 | 106ec879 | bellard | * current FPU state.
|
2179 | 106ec879 | bellard | */
|
2180 | 106ec879 | bellard | preempt_disable();
|
2181 | 106ec879 | bellard | |
2182 | 106ec879 | bellard | if (!is_fpu_owner()) {
|
2183 | 106ec879 | bellard | own_fpu();
|
2184 | 106ec879 | bellard | restore_fp(current);
|
2185 | 106ec879 | bellard | }
|
2186 | 106ec879 | bellard | err |= save_fp_context(sc);
|
2187 | 106ec879 | bellard | |
2188 | 106ec879 | bellard | preempt_enable();
|
2189 | 106ec879 | bellard | out:
|
2190 | 106ec879 | bellard | #endif
|
2191 | 106ec879 | bellard | return err;
|
2192 | 106ec879 | bellard | } |
2193 | 106ec879 | bellard | |
2194 | 106ec879 | bellard | static inline int |
2195 | 106ec879 | bellard | restore_sigcontext(CPUState *regs, struct target_sigcontext *sc)
|
2196 | 106ec879 | bellard | { |
2197 | 106ec879 | bellard | int err = 0; |
2198 | 106ec879 | bellard | |
2199 | 106ec879 | bellard | err |= __get_user(regs->CP0_EPC, &sc->sc_pc); |
2200 | 106ec879 | bellard | |
2201 | ead9360e | ths | err |= __get_user(regs->HI[0][regs->current_tc], &sc->sc_mdhi);
|
2202 | ead9360e | ths | err |= __get_user(regs->LO[0][regs->current_tc], &sc->sc_mdlo);
|
2203 | 106ec879 | bellard | |
2204 | ead9360e | ths | #define restore_gp_reg(i) do { \ |
2205 | ead9360e | ths | err |= __get_user(regs->gpr[i][regs->current_tc], &sc->sc_regs[i]); \ |
2206 | 106ec879 | bellard | } while(0) |
2207 | 106ec879 | bellard | restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3); |
2208 | 106ec879 | bellard | restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6); |
2209 | 106ec879 | bellard | restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9); |
2210 | 106ec879 | bellard | restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12); |
2211 | 106ec879 | bellard | restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15); |
2212 | 106ec879 | bellard | restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18); |
2213 | 106ec879 | bellard | restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21); |
2214 | 106ec879 | bellard | restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24); |
2215 | 106ec879 | bellard | restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27); |
2216 | 106ec879 | bellard | restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30); |
2217 | 106ec879 | bellard | restore_gp_reg(31);
|
2218 | 388bb21a | ths | #undef restore_gp_reg
|
2219 | 106ec879 | bellard | |
2220 | 106ec879 | bellard | #if 0
|
2221 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2222 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);
|
2223 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);
|
2224 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);
|
2225 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);
|
2226 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);
|
2227 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);
|
2228 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
|
2229 | 106ec879 | bellard | }
|
2230 | 388bb21a | ths | #ifdef CONFIG_64BIT
|
2231 | 106ec879 | bellard | err |= __get_user(regs->hi, &sc->sc_hi[0]);
|
2232 | 106ec879 | bellard | err |= __get_user(regs->lo, &sc->sc_lo[0]);
|
2233 | 106ec879 | bellard | if (cpu_has_dsp) {
|
2234 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg);
|
2235 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg);
|
2236 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg);
|
2237 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg);
|
2238 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg);
|
2239 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg);
|
2240 | 106ec879 | bellard | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
|
2241 | 106ec879 | bellard | }
|
2242 | 388bb21a | ths | #endif
|
2243 | 106ec879 | bellard | |
2244 | 106ec879 | bellard | err |= __get_user(used_math, &sc->sc_used_math); |
2245 | 106ec879 | bellard | conditional_used_math(used_math); |
2246 | 106ec879 | bellard | |
2247 | 106ec879 | bellard | preempt_disable(); |
2248 | 106ec879 | bellard | |
2249 | 106ec879 | bellard | if (used_math()) {
|
2250 | 106ec879 | bellard | /* restore fpu context if we have used it before */
|
2251 | 106ec879 | bellard | own_fpu(); |
2252 | 106ec879 | bellard | err |= restore_fp_context(sc); |
2253 | 106ec879 | bellard | } else {
|
2254 | 106ec879 | bellard | /* signal handler may have used FPU. Give it up. */
|
2255 | 106ec879 | bellard | lose_fpu(); |
2256 | 106ec879 | bellard | } |
2257 | 106ec879 | bellard | |
2258 | 106ec879 | bellard | preempt_enable(); |
2259 | 106ec879 | bellard | #endif
|
2260 | 106ec879 | bellard | return err;
|
2261 | 106ec879 | bellard | } |
2262 | 106ec879 | bellard | /*
|
2263 | 106ec879 | bellard | * Determine which stack to use..
|
2264 | 106ec879 | bellard | */
|
2265 | 579a97f7 | bellard | static inline abi_ulong |
2266 | 106ec879 | bellard | get_sigframe(struct emulated_sigaction *ka, CPUState *regs, size_t frame_size)
|
2267 | 106ec879 | bellard | { |
2268 | 106ec879 | bellard | unsigned long sp; |
2269 | 106ec879 | bellard | |
2270 | 106ec879 | bellard | /* Default to using normal stack */
|
2271 | ead9360e | ths | sp = regs->gpr[29][regs->current_tc];
|
2272 | 106ec879 | bellard | |
2273 | 106ec879 | bellard | /*
|
2274 | 106ec879 | bellard | * FPU emulator may have it's own trampoline active just
|
2275 | 106ec879 | bellard | * above the user stack, 16-bytes before the next lowest
|
2276 | 106ec879 | bellard | * 16 byte boundary. Try to avoid trashing it.
|
2277 | 106ec879 | bellard | */
|
2278 | 106ec879 | bellard | sp -= 32;
|
2279 | 106ec879 | bellard | |
2280 | 106ec879 | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
2281 | a04e134a | ths | if ((ka->sa.sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
2282 | a04e134a | ths | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2283 | a04e134a | ths | } |
2284 | 106ec879 | bellard | |
2285 | 579a97f7 | bellard | return (sp - frame_size) & ~7; |
2286 | 106ec879 | bellard | } |
2287 | 106ec879 | bellard | |
2288 | 579a97f7 | bellard | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */
|
2289 | 5fafdf24 | ths | static void setup_frame(int sig, struct emulated_sigaction * ka, |
2290 | 579a97f7 | bellard | target_sigset_t *set, CPUState *regs) |
2291 | 106ec879 | bellard | { |
2292 | 106ec879 | bellard | struct sigframe *frame;
|
2293 | 579a97f7 | bellard | abi_ulong frame_addr; |
2294 | 106ec879 | bellard | int i;
|
2295 | 106ec879 | bellard | |
2296 | 579a97f7 | bellard | frame_addr = get_sigframe(ka, regs, sizeof(*frame));
|
2297 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
2298 | 106ec879 | bellard | goto give_sigsegv;
|
2299 | 106ec879 | bellard | |
2300 | 106ec879 | bellard | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); |
2301 | 106ec879 | bellard | |
2302 | 106ec879 | bellard | if(setup_sigcontext(regs, &frame->sf_sc))
|
2303 | 106ec879 | bellard | goto give_sigsegv;
|
2304 | 106ec879 | bellard | |
2305 | 106ec879 | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
2306 | 106ec879 | bellard | if(__put_user(set->sig[i], &frame->sf_mask.sig[i]))
|
2307 | 106ec879 | bellard | goto give_sigsegv;
|
2308 | 106ec879 | bellard | } |
2309 | 106ec879 | bellard | |
2310 | 106ec879 | bellard | /*
|
2311 | 106ec879 | bellard | * Arguments to signal handler:
|
2312 | 106ec879 | bellard | *
|
2313 | 106ec879 | bellard | * a0 = signal number
|
2314 | 106ec879 | bellard | * a1 = 0 (should be cause)
|
2315 | 106ec879 | bellard | * a2 = pointer to struct sigcontext
|
2316 | 106ec879 | bellard | *
|
2317 | 106ec879 | bellard | * $25 and PC point to the signal handler, $29 points to the
|
2318 | 106ec879 | bellard | * struct sigframe.
|
2319 | 106ec879 | bellard | */
|
2320 | ead9360e | ths | regs->gpr[ 4][regs->current_tc] = sig;
|
2321 | ead9360e | ths | regs->gpr[ 5][regs->current_tc] = 0; |
2322 | ead9360e | ths | regs->gpr[ 6][regs->current_tc] = h2g(&frame->sf_sc);
|
2323 | ead9360e | ths | regs->gpr[29][regs->current_tc] = h2g(frame);
|
2324 | ead9360e | ths | regs->gpr[31][regs->current_tc] = h2g(frame->sf_code);
|
2325 | 106ec879 | bellard | /* The original kernel code sets CP0_EPC to the handler
|
2326 | 106ec879 | bellard | * since it returns to userland using eret
|
2327 | 106ec879 | bellard | * we cannot do this here, and we must set PC directly */
|
2328 | ead9360e | ths | regs->PC[regs->current_tc] = regs->gpr[25][regs->current_tc] = ka->sa._sa_handler;
|
2329 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
2330 | 106ec879 | bellard | return;
|
2331 | 106ec879 | bellard | |
2332 | 106ec879 | bellard | give_sigsegv:
|
2333 | 579a97f7 | bellard | unlock_user_struct(frame, frame_addr, 1);
|
2334 | 106ec879 | bellard | force_sig(TARGET_SIGSEGV/*, current*/);
|
2335 | 5fafdf24 | ths | return;
|
2336 | 106ec879 | bellard | } |
2337 | 106ec879 | bellard | |
2338 | 106ec879 | bellard | long do_sigreturn(CPUState *regs)
|
2339 | 106ec879 | bellard | { |
2340 | 388bb21a | ths | struct sigframe *frame;
|
2341 | 579a97f7 | bellard | abi_ulong frame_addr; |
2342 | 388bb21a | ths | sigset_t blocked; |
2343 | 388bb21a | ths | target_sigset_t target_set; |
2344 | 388bb21a | ths | int i;
|
2345 | 106ec879 | bellard | |
2346 | 106ec879 | bellard | #if defined(DEBUG_SIGNAL)
|
2347 | 388bb21a | ths | fprintf(stderr, "do_sigreturn\n");
|
2348 | 106ec879 | bellard | #endif
|
2349 | 579a97f7 | bellard | frame_addr = regs->gpr[29][regs->current_tc];
|
2350 | 579a97f7 | bellard | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
2351 | 106ec879 | bellard | goto badframe;
|
2352 | 106ec879 | bellard | |
2353 | 388bb21a | ths | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
2354 | 106ec879 | bellard | if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i]))
|
2355 | 106ec879 | bellard | goto badframe;
|
2356 | 388bb21a | ths | } |
2357 | 106ec879 | bellard | |
2358 | 388bb21a | ths | target_to_host_sigset_internal(&blocked, &target_set); |
2359 | 388bb21a | ths | sigprocmask(SIG_SETMASK, &blocked, NULL);
|
2360 | 106ec879 | bellard | |
2361 | 388bb21a | ths | if (restore_sigcontext(regs, &frame->sf_sc))
|
2362 | 106ec879 | bellard | goto badframe;
|
2363 | 106ec879 | bellard | |
2364 | 106ec879 | bellard | #if 0
|
2365 | 388bb21a | ths | /*
|
2366 | 388bb21a | ths | * Don't let your children do this ...
|
2367 | 388bb21a | ths | */
|
2368 | 388bb21a | ths | __asm__ __volatile__(
|
2369 | 106ec879 | bellard | "move\t$29, %0\n\t"
|
2370 | 106ec879 | bellard | "j\tsyscall_exit"
|
2371 | 106ec879 | bellard | :/* no outputs */
|
2372 | 106ec879 | bellard | :"r" (®s));
|
2373 | 388bb21a | ths | /* Unreached */
|
2374 | 106ec879 | bellard | #endif
|
2375 | 3b46e624 | ths | |
2376 | ead9360e | ths | regs->PC[regs->current_tc] = regs->CP0_EPC; |
2377 | 388bb21a | ths | /* I am not sure this is right, but it seems to work
|
2378 | 106ec879 | bellard | * maybe a problem with nested signals ? */
|
2379 | 106ec879 | bellard | regs->CP0_EPC = 0;
|
2380 | 106ec879 | bellard | return 0; |
2381 | 106ec879 | bellard | |
2382 | 106ec879 | bellard | badframe:
|
2383 | 388bb21a | ths | force_sig(TARGET_SIGSEGV/*, current*/);
|
2384 | 388bb21a | ths | return 0; |
2385 | 106ec879 | bellard | } |
2386 | 106ec879 | bellard | |
2387 | 5fafdf24 | ths | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
2388 | 106ec879 | bellard | target_siginfo_t *info, |
2389 | 106ec879 | bellard | target_sigset_t *set, CPUState *env) |
2390 | 106ec879 | bellard | { |
2391 | 106ec879 | bellard | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
2392 | 106ec879 | bellard | } |
2393 | 106ec879 | bellard | |
2394 | 106ec879 | bellard | long do_rt_sigreturn(CPUState *env)
|
2395 | 106ec879 | bellard | { |
2396 | 106ec879 | bellard | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
2397 | 106ec879 | bellard | return -ENOSYS;
|
2398 | 106ec879 | bellard | } |
2399 | 6d5e216d | bellard | |
2400 | b346ff46 | bellard | #else
|
2401 | b346ff46 | bellard | |
2402 | b346ff46 | bellard | static void setup_frame(int sig, struct emulated_sigaction *ka, |
2403 | b346ff46 | bellard | target_sigset_t *set, CPUState *env) |
2404 | b346ff46 | bellard | { |
2405 | b346ff46 | bellard | fprintf(stderr, "setup_frame: not implemented\n");
|
2406 | b346ff46 | bellard | } |
2407 | b346ff46 | bellard | |
2408 | 5fafdf24 | ths | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
2409 | b346ff46 | bellard | target_siginfo_t *info, |
2410 | b346ff46 | bellard | target_sigset_t *set, CPUState *env) |
2411 | b346ff46 | bellard | { |
2412 | b346ff46 | bellard | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
2413 | b346ff46 | bellard | } |
2414 | b346ff46 | bellard | |
2415 | b346ff46 | bellard | long do_sigreturn(CPUState *env)
|
2416 | b346ff46 | bellard | { |
2417 | b346ff46 | bellard | fprintf(stderr, "do_sigreturn: not implemented\n");
|
2418 | b346ff46 | bellard | return -ENOSYS;
|
2419 | b346ff46 | bellard | } |
2420 | b346ff46 | bellard | |
2421 | b346ff46 | bellard | long do_rt_sigreturn(CPUState *env)
|
2422 | b346ff46 | bellard | { |
2423 | b346ff46 | bellard | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
2424 | b346ff46 | bellard | return -ENOSYS;
|
2425 | b346ff46 | bellard | } |
2426 | b346ff46 | bellard | |
2427 | 66fb9763 | bellard | #endif
|
2428 | 66fb9763 | bellard | |
2429 | 66fb9763 | bellard | void process_pending_signals(void *cpu_env) |
2430 | 66fb9763 | bellard | { |
2431 | 66fb9763 | bellard | int sig;
|
2432 | 992f48a0 | blueswir1 | abi_ulong handler; |
2433 | 9de5e440 | bellard | sigset_t set, old_set; |
2434 | 9de5e440 | bellard | target_sigset_t target_old_set; |
2435 | 66fb9763 | bellard | struct emulated_sigaction *k;
|
2436 | 66fb9763 | bellard | struct sigqueue *q;
|
2437 | 3b46e624 | ths | |
2438 | 31e31b8a | bellard | if (!signal_pending)
|
2439 | 31e31b8a | bellard | return;
|
2440 | 31e31b8a | bellard | |
2441 | 66fb9763 | bellard | k = sigact_table; |
2442 | 66fb9763 | bellard | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
2443 | 66fb9763 | bellard | if (k->pending)
|
2444 | 31e31b8a | bellard | goto handle_signal;
|
2445 | 66fb9763 | bellard | k++; |
2446 | 31e31b8a | bellard | } |
2447 | 31e31b8a | bellard | /* if no signal is pending, just return */
|
2448 | 31e31b8a | bellard | signal_pending = 0;
|
2449 | 31e31b8a | bellard | return;
|
2450 | 66fb9763 | bellard | |
2451 | 31e31b8a | bellard | handle_signal:
|
2452 | 66fb9763 | bellard | #ifdef DEBUG_SIGNAL
|
2453 | bc8a22cc | bellard | fprintf(stderr, "qemu: process signal %d\n", sig);
|
2454 | 66fb9763 | bellard | #endif
|
2455 | 66fb9763 | bellard | /* dequeue signal */
|
2456 | 66fb9763 | bellard | q = k->first; |
2457 | 66fb9763 | bellard | k->first = q->next; |
2458 | 66fb9763 | bellard | if (!k->first)
|
2459 | 66fb9763 | bellard | k->pending = 0;
|
2460 | 3b46e624 | ths | |
2461 | 1fddef4b | bellard | sig = gdb_handlesig (cpu_env, sig); |
2462 | 1fddef4b | bellard | if (!sig) {
|
2463 | 1fddef4b | bellard | fprintf (stderr, "Lost signal\n");
|
2464 | 1fddef4b | bellard | abort(); |
2465 | 1fddef4b | bellard | } |
2466 | 66fb9763 | bellard | |
2467 | 66fb9763 | bellard | handler = k->sa._sa_handler; |
2468 | 66fb9763 | bellard | if (handler == TARGET_SIG_DFL) {
|
2469 | 66fb9763 | bellard | /* default handler : ignore some signal. The other are fatal */
|
2470 | 5fafdf24 | ths | if (sig != TARGET_SIGCHLD &&
|
2471 | 5fafdf24 | ths | sig != TARGET_SIGURG && |
2472 | 66fb9763 | bellard | sig != TARGET_SIGWINCH) { |
2473 | 66fb9763 | bellard | force_sig(sig); |
2474 | 66fb9763 | bellard | } |
2475 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_IGN) { |
2476 | 66fb9763 | bellard | /* ignore sig */
|
2477 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_ERR) { |
2478 | 66fb9763 | bellard | force_sig(sig); |
2479 | 66fb9763 | bellard | } else {
|
2480 | 9de5e440 | bellard | /* compute the blocked signals during the handler execution */
|
2481 | 9de5e440 | bellard | target_to_host_sigset(&set, &k->sa.sa_mask); |
2482 | 9de5e440 | bellard | /* SA_NODEFER indicates that the current signal should not be
|
2483 | 9de5e440 | bellard | blocked during the handler */
|
2484 | 9de5e440 | bellard | if (!(k->sa.sa_flags & TARGET_SA_NODEFER))
|
2485 | 9de5e440 | bellard | sigaddset(&set, target_to_host_signal(sig)); |
2486 | 3b46e624 | ths | |
2487 | 9de5e440 | bellard | /* block signals in the handler using Linux */
|
2488 | 9de5e440 | bellard | sigprocmask(SIG_BLOCK, &set, &old_set); |
2489 | 9de5e440 | bellard | /* save the previous blocked signal state to restore it at the
|
2490 | 9de5e440 | bellard | end of the signal execution (see do_sigreturn) */
|
2491 | 9231944d | bellard | host_to_target_sigset_internal(&target_old_set, &old_set); |
2492 | 9de5e440 | bellard | |
2493 | bc8a22cc | bellard | /* if the CPU is in VM86 mode, we restore the 32 bit values */
|
2494 | 84409ddb | j_mayer | #if defined(TARGET_I386) && !defined(TARGET_X86_64)
|
2495 | bc8a22cc | bellard | { |
2496 | bc8a22cc | bellard | CPUX86State *env = cpu_env; |
2497 | bc8a22cc | bellard | if (env->eflags & VM_MASK)
|
2498 | bc8a22cc | bellard | save_v86_state(env); |
2499 | bc8a22cc | bellard | } |
2500 | bc8a22cc | bellard | #endif
|
2501 | 9de5e440 | bellard | /* prepare the stack frame of the virtual CPU */
|
2502 | 66fb9763 | bellard | if (k->sa.sa_flags & TARGET_SA_SIGINFO)
|
2503 | 9de5e440 | bellard | setup_rt_frame(sig, k, &q->info, &target_old_set, cpu_env); |
2504 | 66fb9763 | bellard | else
|
2505 | 9de5e440 | bellard | setup_frame(sig, k, &target_old_set, cpu_env); |
2506 | 66fb9763 | bellard | if (k->sa.sa_flags & TARGET_SA_RESETHAND)
|
2507 | 66fb9763 | bellard | k->sa._sa_handler = TARGET_SIG_DFL; |
2508 | 31e31b8a | bellard | } |
2509 | 66fb9763 | bellard | if (q != &k->info)
|
2510 | 66fb9763 | bellard | free_sigqueue(q); |
2511 | 66fb9763 | bellard | } |