root / linux-user / signal.c @ dc5d0b3d
History | View | Annotate | Download (38 kB)
1 | 31e31b8a | bellard | /*
|
---|---|---|---|
2 | 66fb9763 | bellard | * Emulation of Linux signals
|
3 | 31e31b8a | bellard | *
|
4 | 31e31b8a | bellard | * Copyright (c) 2003 Fabrice Bellard
|
5 | 31e31b8a | bellard | *
|
6 | 31e31b8a | bellard | * This program is free software; you can redistribute it and/or modify
|
7 | 31e31b8a | bellard | * it under the terms of the GNU General Public License as published by
|
8 | 31e31b8a | bellard | * the Free Software Foundation; either version 2 of the License, or
|
9 | 31e31b8a | bellard | * (at your option) any later version.
|
10 | 31e31b8a | bellard | *
|
11 | 31e31b8a | bellard | * This program is distributed in the hope that it will be useful,
|
12 | 31e31b8a | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 31e31b8a | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 | 31e31b8a | bellard | * GNU General Public License for more details.
|
15 | 31e31b8a | bellard | *
|
16 | 31e31b8a | bellard | * You should have received a copy of the GNU General Public License
|
17 | 31e31b8a | bellard | * along with this program; if not, write to the Free Software
|
18 | 31e31b8a | bellard | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
19 | 31e31b8a | bellard | */
|
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 | 0d330196 | bellard | #ifdef __ia64__
|
30 | 0d330196 | bellard | #undef uc_mcontext
|
31 | 0d330196 | bellard | #undef uc_sigmask
|
32 | 0d330196 | bellard | #undef uc_stack
|
33 | 0d330196 | bellard | #undef uc_link
|
34 | 0d330196 | bellard | #endif
|
35 | 0d330196 | bellard | |
36 | 3ef693a0 | bellard | #include "qemu.h" |
37 | 66fb9763 | bellard | |
38 | 66fb9763 | bellard | //#define DEBUG_SIGNAL
|
39 | 66fb9763 | bellard | |
40 | 66fb9763 | bellard | #define MAX_SIGQUEUE_SIZE 1024 |
41 | 66fb9763 | bellard | |
42 | 66fb9763 | bellard | struct sigqueue {
|
43 | 66fb9763 | bellard | struct sigqueue *next;
|
44 | 9de5e440 | bellard | target_siginfo_t info; |
45 | 66fb9763 | bellard | }; |
46 | 31e31b8a | bellard | |
47 | 31e31b8a | bellard | struct emulated_sigaction {
|
48 | 31e31b8a | bellard | struct target_sigaction sa;
|
49 | 66fb9763 | bellard | int pending; /* true if signal is pending */ |
50 | 66fb9763 | bellard | struct sigqueue *first;
|
51 | 66fb9763 | bellard | struct sigqueue info; /* in order to always have memory for the |
52 | 66fb9763 | bellard | first signal, we put it here */
|
53 | 31e31b8a | bellard | }; |
54 | 31e31b8a | bellard | |
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 | 66fb9763 | bellard | static void host_signal_handler(int host_signum, siginfo_t *info, |
61 | 66fb9763 | bellard | void *puc);
|
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,*/
|
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
|
81 | 9e5f5284 | bellard | [SIGSTKFLT] = TARGET_SIGSTKFLT, |
82 | 9e5f5284 | bellard | #endif
|
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 */
|
99 | 9e5f5284 | bellard | }; |
100 | 9e5f5284 | bellard | static uint8_t target_to_host_signal_table[65]; |
101 | 9e5f5284 | bellard | |
102 | 31e31b8a | bellard | static inline int host_to_target_signal(int sig) |
103 | 31e31b8a | bellard | { |
104 | 9e5f5284 | bellard | return host_to_target_signal_table[sig];
|
105 | 31e31b8a | bellard | } |
106 | 31e31b8a | bellard | |
107 | 31e31b8a | bellard | static inline int target_to_host_signal(int sig) |
108 | 31e31b8a | bellard | { |
109 | 9e5f5284 | bellard | return target_to_host_signal_table[sig];
|
110 | 31e31b8a | bellard | } |
111 | 31e31b8a | bellard | |
112 | 9231944d | bellard | static void host_to_target_sigset_internal(target_sigset_t *d, |
113 | 9231944d | bellard | const sigset_t *s)
|
114 | 66fb9763 | bellard | { |
115 | 66fb9763 | bellard | int i;
|
116 | 9e5f5284 | bellard | unsigned long sigmask; |
117 | 9e5f5284 | bellard | uint32_t target_sigmask; |
118 | 9e5f5284 | bellard | |
119 | 9e5f5284 | bellard | sigmask = ((unsigned long *)s)[0]; |
120 | 9e5f5284 | bellard | target_sigmask = 0;
|
121 | 9e5f5284 | bellard | for(i = 0; i < 32; i++) { |
122 | 9e5f5284 | bellard | if (sigmask & (1 << i)) |
123 | 9e5f5284 | bellard | target_sigmask |= 1 << (host_to_target_signal(i + 1) - 1); |
124 | 9e5f5284 | bellard | } |
125 | 9e5f5284 | bellard | #if TARGET_LONG_BITS == 32 && HOST_LONG_BITS == 32 |
126 | 9231944d | bellard | d->sig[0] = target_sigmask;
|
127 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) { |
128 | 9231944d | bellard | d->sig[i] = ((unsigned long *)s)[i]; |
129 | 66fb9763 | bellard | } |
130 | 9e5f5284 | bellard | #elif TARGET_LONG_BITS == 32 && HOST_LONG_BITS == 64 && TARGET_NSIG_WORDS == 2 |
131 | 9231944d | bellard | d->sig[0] = target_sigmask;
|
132 | 9231944d | bellard | d->sig[1] = sigmask >> 32; |
133 | 9e5f5284 | bellard | #else
|
134 | 9e5f5284 | bellard | #error host_to_target_sigset
|
135 | 9e5f5284 | bellard | #endif
|
136 | 66fb9763 | bellard | } |
137 | 66fb9763 | bellard | |
138 | 9231944d | bellard | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
139 | 9231944d | bellard | { |
140 | 9231944d | bellard | target_sigset_t d1; |
141 | 9231944d | bellard | int i;
|
142 | 9231944d | bellard | |
143 | 9231944d | bellard | host_to_target_sigset_internal(&d1, s); |
144 | 9231944d | bellard | for(i = 0;i < TARGET_NSIG_WORDS; i++) |
145 | 9231944d | bellard | __put_user(d1.sig[i], &d->sig[i]); |
146 | 9231944d | bellard | } |
147 | 9231944d | bellard | |
148 | 9231944d | bellard | void target_to_host_sigset_internal(sigset_t *d, const target_sigset_t *s) |
149 | 66fb9763 | bellard | { |
150 | 66fb9763 | bellard | int i;
|
151 | 9e5f5284 | bellard | unsigned long sigmask; |
152 | 9e5f5284 | bellard | target_ulong target_sigmask; |
153 | 9e5f5284 | bellard | |
154 | 9231944d | bellard | target_sigmask = s->sig[0];
|
155 | 9e5f5284 | bellard | sigmask = 0;
|
156 | 9e5f5284 | bellard | for(i = 0; i < 32; i++) { |
157 | 9e5f5284 | bellard | if (target_sigmask & (1 << i)) |
158 | 9e5f5284 | bellard | sigmask |= 1 << (target_to_host_signal(i + 1) - 1); |
159 | 9e5f5284 | bellard | } |
160 | 9e5f5284 | bellard | #if TARGET_LONG_BITS == 32 && HOST_LONG_BITS == 32 |
161 | 9e5f5284 | bellard | ((unsigned long *)d)[0] = sigmask; |
162 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) { |
163 | 9231944d | bellard | ((unsigned long *)d)[i] = s->sig[i]; |
164 | 66fb9763 | bellard | } |
165 | 9e5f5284 | bellard | #elif TARGET_LONG_BITS == 32 && HOST_LONG_BITS == 64 && TARGET_NSIG_WORDS == 2 |
166 | 9231944d | bellard | ((unsigned long *)d)[0] = sigmask | ((unsigned long)(s->sig[1]) << 32); |
167 | 9e5f5284 | bellard | #else
|
168 | 9e5f5284 | bellard | #error target_to_host_sigset
|
169 | 9e5f5284 | bellard | #endif /* TARGET_LONG_BITS */ |
170 | 66fb9763 | bellard | } |
171 | 66fb9763 | bellard | |
172 | 9231944d | bellard | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
173 | 9231944d | bellard | { |
174 | 9231944d | bellard | target_sigset_t s1; |
175 | 9231944d | bellard | int i;
|
176 | 9231944d | bellard | |
177 | 9231944d | bellard | for(i = 0;i < TARGET_NSIG_WORDS; i++) |
178 | 9231944d | bellard | __get_user(s1.sig[i], &s->sig[i]); |
179 | 9231944d | bellard | target_to_host_sigset_internal(d, &s1); |
180 | 9231944d | bellard | } |
181 | 9231944d | bellard | |
182 | 66fb9763 | bellard | void host_to_target_old_sigset(target_ulong *old_sigset,
|
183 | 66fb9763 | bellard | const sigset_t *sigset)
|
184 | 66fb9763 | bellard | { |
185 | 9e5f5284 | bellard | target_sigset_t d; |
186 | 9e5f5284 | bellard | host_to_target_sigset(&d, sigset); |
187 | 9e5f5284 | bellard | *old_sigset = d.sig[0];
|
188 | 66fb9763 | bellard | } |
189 | 66fb9763 | bellard | |
190 | 66fb9763 | bellard | void target_to_host_old_sigset(sigset_t *sigset,
|
191 | 66fb9763 | bellard | const target_ulong *old_sigset)
|
192 | 66fb9763 | bellard | { |
193 | 9e5f5284 | bellard | target_sigset_t d; |
194 | 9e5f5284 | bellard | int i;
|
195 | 9e5f5284 | bellard | |
196 | 9e5f5284 | bellard | d.sig[0] = *old_sigset;
|
197 | 9e5f5284 | bellard | for(i = 1;i < TARGET_NSIG_WORDS; i++) |
198 | 9e5f5284 | bellard | d.sig[i] = 0;
|
199 | 9e5f5284 | bellard | target_to_host_sigset(sigset, &d); |
200 | 66fb9763 | bellard | } |
201 | 66fb9763 | bellard | |
202 | 9de5e440 | bellard | /* siginfo conversion */
|
203 | 9de5e440 | bellard | |
204 | 9de5e440 | bellard | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
205 | 9de5e440 | bellard | const siginfo_t *info)
|
206 | 66fb9763 | bellard | { |
207 | 9de5e440 | bellard | int sig;
|
208 | 9de5e440 | bellard | sig = host_to_target_signal(info->si_signo); |
209 | 9de5e440 | bellard | tinfo->si_signo = sig; |
210 | 9de5e440 | bellard | tinfo->si_errno = 0;
|
211 | 9de5e440 | bellard | tinfo->si_code = 0;
|
212 | 447db213 | bellard | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
|
213 | 447db213 | bellard | sig == SIGBUS || sig == SIGTRAP) { |
214 | 9de5e440 | bellard | /* should never come here, but who knows. The information for
|
215 | 9de5e440 | bellard | the target is irrelevant */
|
216 | 9de5e440 | bellard | tinfo->_sifields._sigfault._addr = 0;
|
217 | 9de5e440 | bellard | } else if (sig >= TARGET_SIGRTMIN) { |
218 | 9de5e440 | bellard | tinfo->_sifields._rt._pid = info->si_pid; |
219 | 9de5e440 | bellard | tinfo->_sifields._rt._uid = info->si_uid; |
220 | 9de5e440 | bellard | /* XXX: potential problem if 64 bit */
|
221 | 9de5e440 | bellard | tinfo->_sifields._rt._sigval.sival_ptr = |
222 | 9de5e440 | bellard | (target_ulong)info->si_value.sival_ptr; |
223 | 9de5e440 | bellard | } |
224 | 9de5e440 | bellard | } |
225 | 9de5e440 | bellard | |
226 | 9de5e440 | bellard | static void tswap_siginfo(target_siginfo_t *tinfo, |
227 | 9de5e440 | bellard | const target_siginfo_t *info)
|
228 | 9de5e440 | bellard | { |
229 | 9de5e440 | bellard | int sig;
|
230 | 9de5e440 | bellard | sig = info->si_signo; |
231 | 9de5e440 | bellard | tinfo->si_signo = tswap32(sig); |
232 | 66fb9763 | bellard | tinfo->si_errno = tswap32(info->si_errno); |
233 | 66fb9763 | bellard | tinfo->si_code = tswap32(info->si_code); |
234 | 447db213 | bellard | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
|
235 | 447db213 | bellard | sig == SIGBUS || sig == SIGTRAP) { |
236 | 9de5e440 | bellard | tinfo->_sifields._sigfault._addr = |
237 | 9de5e440 | bellard | tswapl(info->_sifields._sigfault._addr); |
238 | 9de5e440 | bellard | } else if (sig >= TARGET_SIGRTMIN) { |
239 | 9de5e440 | bellard | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); |
240 | 9de5e440 | bellard | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); |
241 | 9de5e440 | bellard | tinfo->_sifields._rt._sigval.sival_ptr = |
242 | 9de5e440 | bellard | tswapl(info->_sifields._rt._sigval.sival_ptr); |
243 | 9de5e440 | bellard | } |
244 | 9de5e440 | bellard | } |
245 | 9de5e440 | bellard | |
246 | 9de5e440 | bellard | |
247 | 9de5e440 | bellard | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) |
248 | 9de5e440 | bellard | { |
249 | 9de5e440 | bellard | host_to_target_siginfo_noswap(tinfo, info); |
250 | 9de5e440 | bellard | tswap_siginfo(tinfo, tinfo); |
251 | 66fb9763 | bellard | } |
252 | 66fb9763 | bellard | |
253 | 9de5e440 | bellard | /* XXX: we support only POSIX RT signals are used. */
|
254 | 9de5e440 | bellard | /* XXX: find a solution for 64 bit (additionnal malloced data is needed) */
|
255 | 9de5e440 | bellard | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
256 | 66fb9763 | bellard | { |
257 | 66fb9763 | bellard | info->si_signo = tswap32(tinfo->si_signo); |
258 | 66fb9763 | bellard | info->si_errno = tswap32(tinfo->si_errno); |
259 | 66fb9763 | bellard | info->si_code = tswap32(tinfo->si_code); |
260 | 9de5e440 | bellard | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
261 | 9de5e440 | bellard | info->si_uid = tswap32(tinfo->_sifields._rt._uid); |
262 | 9de5e440 | bellard | info->si_value.sival_ptr = |
263 | 9de5e440 | bellard | (void *)tswapl(tinfo->_sifields._rt._sigval.sival_ptr);
|
264 | 66fb9763 | bellard | } |
265 | 66fb9763 | bellard | |
266 | 31e31b8a | bellard | void signal_init(void) |
267 | 31e31b8a | bellard | { |
268 | 31e31b8a | bellard | struct sigaction act;
|
269 | 9e5f5284 | bellard | int i, j;
|
270 | 31e31b8a | bellard | |
271 | 9e5f5284 | bellard | /* generate signal conversion tables */
|
272 | 9e5f5284 | bellard | for(i = 1; i <= 64; i++) { |
273 | 9e5f5284 | bellard | if (host_to_target_signal_table[i] == 0) |
274 | 9e5f5284 | bellard | host_to_target_signal_table[i] = i; |
275 | 9e5f5284 | bellard | } |
276 | 9e5f5284 | bellard | for(i = 1; i <= 64; i++) { |
277 | 9e5f5284 | bellard | j = host_to_target_signal_table[i]; |
278 | 9e5f5284 | bellard | target_to_host_signal_table[j] = i; |
279 | 9e5f5284 | bellard | } |
280 | 9e5f5284 | bellard | |
281 | 9de5e440 | bellard | /* set all host signal handlers. ALL signals are blocked during
|
282 | 9de5e440 | bellard | the handlers to serialize them. */
|
283 | 9de5e440 | bellard | sigfillset(&act.sa_mask); |
284 | 31e31b8a | bellard | act.sa_flags = SA_SIGINFO; |
285 | 31e31b8a | bellard | act.sa_sigaction = host_signal_handler; |
286 | 31e31b8a | bellard | for(i = 1; i < NSIG; i++) { |
287 | c9087c2a | bellard | sigaction(i, &act, NULL);
|
288 | 31e31b8a | bellard | } |
289 | 31e31b8a | bellard | |
290 | 31e31b8a | bellard | memset(sigact_table, 0, sizeof(sigact_table)); |
291 | 66fb9763 | bellard | |
292 | 66fb9763 | bellard | first_free = &sigqueue_table[0];
|
293 | 66fb9763 | bellard | for(i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) |
294 | 66fb9763 | bellard | sigqueue_table[i].next = &sigqueue_table[i + 1];
|
295 | 66fb9763 | bellard | sigqueue_table[MAX_SIGQUEUE_SIZE - 1].next = NULL; |
296 | 66fb9763 | bellard | } |
297 | 66fb9763 | bellard | |
298 | 66fb9763 | bellard | /* signal queue handling */
|
299 | 66fb9763 | bellard | |
300 | 66fb9763 | bellard | static inline struct sigqueue *alloc_sigqueue(void) |
301 | 66fb9763 | bellard | { |
302 | 66fb9763 | bellard | struct sigqueue *q = first_free;
|
303 | 66fb9763 | bellard | if (!q)
|
304 | 66fb9763 | bellard | return NULL; |
305 | 66fb9763 | bellard | first_free = q->next; |
306 | 66fb9763 | bellard | return q;
|
307 | 31e31b8a | bellard | } |
308 | 31e31b8a | bellard | |
309 | 66fb9763 | bellard | static inline void free_sigqueue(struct sigqueue *q) |
310 | 66fb9763 | bellard | { |
311 | 66fb9763 | bellard | q->next = first_free; |
312 | 66fb9763 | bellard | first_free = q; |
313 | 66fb9763 | bellard | } |
314 | 66fb9763 | bellard | |
315 | 9de5e440 | bellard | /* abort execution with signal */
|
316 | 9de5e440 | bellard | void __attribute((noreturn)) force_sig(int sig) |
317 | 66fb9763 | bellard | { |
318 | 66fb9763 | bellard | int host_sig;
|
319 | 66fb9763 | bellard | host_sig = target_to_host_signal(sig); |
320 | bc8a22cc | bellard | fprintf(stderr, "qemu: uncaught target signal %d (%s) - exiting\n",
|
321 | 66fb9763 | bellard | sig, strsignal(host_sig)); |
322 | 9de5e440 | bellard | #if 1 |
323 | 66fb9763 | bellard | _exit(-host_sig); |
324 | 9de5e440 | bellard | #else
|
325 | 9de5e440 | bellard | { |
326 | 9de5e440 | bellard | struct sigaction act;
|
327 | 9de5e440 | bellard | sigemptyset(&act.sa_mask); |
328 | 9de5e440 | bellard | act.sa_flags = SA_SIGINFO; |
329 | 9de5e440 | bellard | act.sa_sigaction = SIG_DFL; |
330 | 9de5e440 | bellard | sigaction(SIGABRT, &act, NULL);
|
331 | 9de5e440 | bellard | abort(); |
332 | 9de5e440 | bellard | } |
333 | 9de5e440 | bellard | #endif
|
334 | 66fb9763 | bellard | } |
335 | 66fb9763 | bellard | |
336 | 9de5e440 | bellard | /* queue a signal so that it will be send to the virtual CPU as soon
|
337 | 9de5e440 | bellard | as possible */
|
338 | 9de5e440 | bellard | int queue_signal(int sig, target_siginfo_t *info) |
339 | 31e31b8a | bellard | { |
340 | 66fb9763 | bellard | struct emulated_sigaction *k;
|
341 | 9de5e440 | bellard | struct sigqueue *q, **pq;
|
342 | 66fb9763 | bellard | target_ulong handler; |
343 | 66fb9763 | bellard | |
344 | 9de5e440 | bellard | #if defined(DEBUG_SIGNAL)
|
345 | bc8a22cc | bellard | fprintf(stderr, "queue_signal: sig=%d\n",
|
346 | 9de5e440 | bellard | sig); |
347 | 66fb9763 | bellard | #endif
|
348 | 9de5e440 | bellard | k = &sigact_table[sig - 1];
|
349 | 66fb9763 | bellard | handler = k->sa._sa_handler; |
350 | 66fb9763 | bellard | if (handler == TARGET_SIG_DFL) {
|
351 | 66fb9763 | bellard | /* default handler : ignore some signal. The other are fatal */
|
352 | 66fb9763 | bellard | if (sig != TARGET_SIGCHLD &&
|
353 | 66fb9763 | bellard | sig != TARGET_SIGURG && |
354 | 66fb9763 | bellard | sig != TARGET_SIGWINCH) { |
355 | 66fb9763 | bellard | force_sig(sig); |
356 | 9de5e440 | bellard | } else {
|
357 | 9de5e440 | bellard | return 0; /* indicate ignored */ |
358 | 66fb9763 | bellard | } |
359 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_IGN) { |
360 | 66fb9763 | bellard | /* ignore signal */
|
361 | 9de5e440 | bellard | return 0; |
362 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_ERR) { |
363 | 66fb9763 | bellard | force_sig(sig); |
364 | 66fb9763 | bellard | } else {
|
365 | 9de5e440 | bellard | pq = &k->first; |
366 | 9de5e440 | bellard | if (sig < TARGET_SIGRTMIN) {
|
367 | 9de5e440 | bellard | /* if non real time signal, we queue exactly one signal */
|
368 | 9de5e440 | bellard | if (!k->pending)
|
369 | 9de5e440 | bellard | q = &k->info; |
370 | 9de5e440 | bellard | else
|
371 | 9de5e440 | bellard | return 0; |
372 | 9de5e440 | bellard | } else {
|
373 | 9de5e440 | bellard | if (!k->pending) {
|
374 | 9de5e440 | bellard | /* first signal */
|
375 | 9de5e440 | bellard | q = &k->info; |
376 | 9de5e440 | bellard | } else {
|
377 | 9de5e440 | bellard | q = alloc_sigqueue(); |
378 | 9de5e440 | bellard | if (!q)
|
379 | 9de5e440 | bellard | return -EAGAIN;
|
380 | 9de5e440 | bellard | while (*pq != NULL) |
381 | 9de5e440 | bellard | pq = &(*pq)->next; |
382 | 9de5e440 | bellard | } |
383 | 9de5e440 | bellard | } |
384 | 9de5e440 | bellard | *pq = q; |
385 | 9de5e440 | bellard | q->info = *info; |
386 | 9de5e440 | bellard | q->next = NULL;
|
387 | 9de5e440 | bellard | k->pending = 1;
|
388 | 9de5e440 | bellard | /* signal that a new signal is pending */
|
389 | 9de5e440 | bellard | signal_pending = 1;
|
390 | 9de5e440 | bellard | return 1; /* indicates that the signal was queued */ |
391 | 9de5e440 | bellard | } |
392 | 9de5e440 | bellard | } |
393 | 9de5e440 | bellard | |
394 | 9de5e440 | bellard | static void host_signal_handler(int host_signum, siginfo_t *info, |
395 | 9de5e440 | bellard | void *puc)
|
396 | 9de5e440 | bellard | { |
397 | 9de5e440 | bellard | int sig;
|
398 | 9de5e440 | bellard | target_siginfo_t tinfo; |
399 | 9de5e440 | bellard | |
400 | 9de5e440 | bellard | /* the CPU emulator uses some host signals to detect exceptions,
|
401 | 9de5e440 | bellard | we we forward to it some signals */
|
402 | 58fe2f10 | bellard | if (host_signum == SIGSEGV || host_signum == SIGBUS
|
403 | 58fe2f10 | bellard | #if defined(TARGET_I386) && defined(USE_CODE_COPY)
|
404 | 58fe2f10 | bellard | || host_signum == SIGFPE |
405 | 58fe2f10 | bellard | #endif
|
406 | 58fe2f10 | bellard | ) { |
407 | b346ff46 | bellard | if (cpu_signal_handler(host_signum, info, puc))
|
408 | 9de5e440 | bellard | return;
|
409 | 9de5e440 | bellard | } |
410 | 9de5e440 | bellard | |
411 | 9de5e440 | bellard | /* get target signal number */
|
412 | 9de5e440 | bellard | sig = host_to_target_signal(host_signum); |
413 | 9de5e440 | bellard | if (sig < 1 || sig > TARGET_NSIG) |
414 | 9de5e440 | bellard | return;
|
415 | 9de5e440 | bellard | #if defined(DEBUG_SIGNAL)
|
416 | bc8a22cc | bellard | fprintf(stderr, "qemu: got signal %d\n", sig);
|
417 | 9de5e440 | bellard | #endif
|
418 | 9de5e440 | bellard | host_to_target_siginfo_noswap(&tinfo, info); |
419 | 9de5e440 | bellard | if (queue_signal(sig, &tinfo) == 1) { |
420 | 9de5e440 | bellard | /* interrupt the virtual CPU as soon as possible */
|
421 | 68a79315 | bellard | cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
422 | 66fb9763 | bellard | } |
423 | 66fb9763 | bellard | } |
424 | 66fb9763 | bellard | |
425 | 66fb9763 | bellard | int do_sigaction(int sig, const struct target_sigaction *act, |
426 | 66fb9763 | bellard | struct target_sigaction *oact)
|
427 | 66fb9763 | bellard | { |
428 | 66fb9763 | bellard | struct emulated_sigaction *k;
|
429 | 773b93ee | bellard | struct sigaction act1;
|
430 | 773b93ee | bellard | int host_sig;
|
431 | 66fb9763 | bellard | |
432 | 66fb9763 | bellard | if (sig < 1 || sig > TARGET_NSIG) |
433 | 66fb9763 | bellard | return -EINVAL;
|
434 | 66fb9763 | bellard | k = &sigact_table[sig - 1];
|
435 | 773b93ee | bellard | #if defined(DEBUG_SIGNAL)
|
436 | 66fb9763 | bellard | fprintf(stderr, "sigaction sig=%d act=0x%08x, oact=0x%08x\n",
|
437 | 66fb9763 | bellard | sig, (int)act, (int)oact); |
438 | 66fb9763 | bellard | #endif
|
439 | 66fb9763 | bellard | if (oact) {
|
440 | 66fb9763 | bellard | oact->_sa_handler = tswapl(k->sa._sa_handler); |
441 | 66fb9763 | bellard | oact->sa_flags = tswapl(k->sa.sa_flags); |
442 | 66fb9763 | bellard | oact->sa_restorer = tswapl(k->sa.sa_restorer); |
443 | 66fb9763 | bellard | oact->sa_mask = k->sa.sa_mask; |
444 | 66fb9763 | bellard | } |
445 | 66fb9763 | bellard | if (act) {
|
446 | 66fb9763 | bellard | k->sa._sa_handler = tswapl(act->_sa_handler); |
447 | 66fb9763 | bellard | k->sa.sa_flags = tswapl(act->sa_flags); |
448 | 66fb9763 | bellard | k->sa.sa_restorer = tswapl(act->sa_restorer); |
449 | 66fb9763 | bellard | k->sa.sa_mask = act->sa_mask; |
450 | 773b93ee | bellard | |
451 | 773b93ee | bellard | /* we update the host linux signal state */
|
452 | 773b93ee | bellard | host_sig = target_to_host_signal(sig); |
453 | 773b93ee | bellard | if (host_sig != SIGSEGV && host_sig != SIGBUS) {
|
454 | 773b93ee | bellard | sigfillset(&act1.sa_mask); |
455 | 773b93ee | bellard | act1.sa_flags = SA_SIGINFO; |
456 | 773b93ee | bellard | if (k->sa.sa_flags & TARGET_SA_RESTART)
|
457 | 773b93ee | bellard | act1.sa_flags |= SA_RESTART; |
458 | 773b93ee | bellard | /* NOTE: it is important to update the host kernel signal
|
459 | 773b93ee | bellard | ignore state to avoid getting unexpected interrupted
|
460 | 773b93ee | bellard | syscalls */
|
461 | 773b93ee | bellard | if (k->sa._sa_handler == TARGET_SIG_IGN) {
|
462 | 773b93ee | bellard | act1.sa_sigaction = (void *)SIG_IGN;
|
463 | 773b93ee | bellard | } else if (k->sa._sa_handler == TARGET_SIG_DFL) { |
464 | 773b93ee | bellard | act1.sa_sigaction = (void *)SIG_DFL;
|
465 | 773b93ee | bellard | } else {
|
466 | 773b93ee | bellard | act1.sa_sigaction = host_signal_handler; |
467 | 773b93ee | bellard | } |
468 | 773b93ee | bellard | sigaction(host_sig, &act1, NULL);
|
469 | 773b93ee | bellard | } |
470 | 66fb9763 | bellard | } |
471 | 66fb9763 | bellard | return 0; |
472 | 66fb9763 | bellard | } |
473 | 66fb9763 | bellard | |
474 | 43fff238 | bellard | #ifndef offsetof
|
475 | 43fff238 | bellard | #define offsetof(type, field) ((size_t) &((type *)0)->field) |
476 | 43fff238 | bellard | #endif
|
477 | 43fff238 | bellard | |
478 | 43fff238 | bellard | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
479 | 43fff238 | bellard | const target_siginfo_t *info)
|
480 | 43fff238 | bellard | { |
481 | 43fff238 | bellard | tswap_siginfo(tinfo, info); |
482 | 43fff238 | bellard | return 0; |
483 | 43fff238 | bellard | } |
484 | 43fff238 | bellard | |
485 | 66fb9763 | bellard | #ifdef TARGET_I386
|
486 | 66fb9763 | bellard | |
487 | 66fb9763 | bellard | /* from the Linux kernel */
|
488 | 66fb9763 | bellard | |
489 | 66fb9763 | bellard | struct target_fpreg {
|
490 | 66fb9763 | bellard | uint16_t significand[4];
|
491 | 66fb9763 | bellard | uint16_t exponent; |
492 | 66fb9763 | bellard | }; |
493 | 66fb9763 | bellard | |
494 | 66fb9763 | bellard | struct target_fpxreg {
|
495 | 66fb9763 | bellard | uint16_t significand[4];
|
496 | 66fb9763 | bellard | uint16_t exponent; |
497 | 66fb9763 | bellard | uint16_t padding[3];
|
498 | 66fb9763 | bellard | }; |
499 | 66fb9763 | bellard | |
500 | 66fb9763 | bellard | struct target_xmmreg {
|
501 | 66fb9763 | bellard | target_ulong element[4];
|
502 | 66fb9763 | bellard | }; |
503 | 66fb9763 | bellard | |
504 | 66fb9763 | bellard | struct target_fpstate {
|
505 | 66fb9763 | bellard | /* Regular FPU environment */
|
506 | 66fb9763 | bellard | target_ulong cw; |
507 | 66fb9763 | bellard | target_ulong sw; |
508 | 66fb9763 | bellard | target_ulong tag; |
509 | 66fb9763 | bellard | target_ulong ipoff; |
510 | 66fb9763 | bellard | target_ulong cssel; |
511 | 66fb9763 | bellard | target_ulong dataoff; |
512 | 66fb9763 | bellard | target_ulong datasel; |
513 | 66fb9763 | bellard | struct target_fpreg _st[8]; |
514 | 66fb9763 | bellard | uint16_t status; |
515 | 66fb9763 | bellard | uint16_t magic; /* 0xffff = regular FPU data only */
|
516 | 66fb9763 | bellard | |
517 | 66fb9763 | bellard | /* FXSR FPU environment */
|
518 | 66fb9763 | bellard | target_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
519 | 66fb9763 | bellard | target_ulong mxcsr; |
520 | 66fb9763 | bellard | target_ulong reserved; |
521 | 66fb9763 | bellard | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
522 | 66fb9763 | bellard | struct target_xmmreg _xmm[8]; |
523 | 66fb9763 | bellard | target_ulong padding[56];
|
524 | 66fb9763 | bellard | }; |
525 | 66fb9763 | bellard | |
526 | 66fb9763 | bellard | #define X86_FXSR_MAGIC 0x0000 |
527 | 66fb9763 | bellard | |
528 | 66fb9763 | bellard | struct target_sigcontext {
|
529 | 66fb9763 | bellard | uint16_t gs, __gsh; |
530 | 66fb9763 | bellard | uint16_t fs, __fsh; |
531 | 66fb9763 | bellard | uint16_t es, __esh; |
532 | 66fb9763 | bellard | uint16_t ds, __dsh; |
533 | 66fb9763 | bellard | target_ulong edi; |
534 | 66fb9763 | bellard | target_ulong esi; |
535 | 66fb9763 | bellard | target_ulong ebp; |
536 | 66fb9763 | bellard | target_ulong esp; |
537 | 66fb9763 | bellard | target_ulong ebx; |
538 | 66fb9763 | bellard | target_ulong edx; |
539 | 66fb9763 | bellard | target_ulong ecx; |
540 | 66fb9763 | bellard | target_ulong eax; |
541 | 66fb9763 | bellard | target_ulong trapno; |
542 | 66fb9763 | bellard | target_ulong err; |
543 | 66fb9763 | bellard | target_ulong eip; |
544 | 66fb9763 | bellard | uint16_t cs, __csh; |
545 | 66fb9763 | bellard | target_ulong eflags; |
546 | 66fb9763 | bellard | target_ulong esp_at_signal; |
547 | 66fb9763 | bellard | uint16_t ss, __ssh; |
548 | 66fb9763 | bellard | target_ulong fpstate; /* pointer */
|
549 | 66fb9763 | bellard | target_ulong oldmask; |
550 | 66fb9763 | bellard | target_ulong cr2; |
551 | 66fb9763 | bellard | }; |
552 | 66fb9763 | bellard | |
553 | 66fb9763 | bellard | typedef struct target_sigaltstack { |
554 | 66fb9763 | bellard | target_ulong ss_sp; |
555 | 66fb9763 | bellard | int ss_flags;
|
556 | 66fb9763 | bellard | target_ulong ss_size; |
557 | 66fb9763 | bellard | } target_stack_t; |
558 | 66fb9763 | bellard | |
559 | 66fb9763 | bellard | struct target_ucontext {
|
560 | 66fb9763 | bellard | target_ulong uc_flags; |
561 | 66fb9763 | bellard | target_ulong uc_link; |
562 | 66fb9763 | bellard | target_stack_t uc_stack; |
563 | 66fb9763 | bellard | struct target_sigcontext uc_mcontext;
|
564 | 66fb9763 | bellard | target_sigset_t uc_sigmask; /* mask last for extensibility */
|
565 | 66fb9763 | bellard | }; |
566 | 66fb9763 | bellard | |
567 | 66fb9763 | bellard | struct sigframe
|
568 | 66fb9763 | bellard | { |
569 | 66fb9763 | bellard | target_ulong pretcode; |
570 | 66fb9763 | bellard | int sig;
|
571 | 66fb9763 | bellard | struct target_sigcontext sc;
|
572 | 66fb9763 | bellard | struct target_fpstate fpstate;
|
573 | 66fb9763 | bellard | target_ulong extramask[TARGET_NSIG_WORDS-1];
|
574 | 66fb9763 | bellard | char retcode[8]; |
575 | 66fb9763 | bellard | }; |
576 | 66fb9763 | bellard | |
577 | 66fb9763 | bellard | struct rt_sigframe
|
578 | 66fb9763 | bellard | { |
579 | 66fb9763 | bellard | target_ulong pretcode; |
580 | 66fb9763 | bellard | int sig;
|
581 | 66fb9763 | bellard | target_ulong pinfo; |
582 | 66fb9763 | bellard | target_ulong puc; |
583 | 66fb9763 | bellard | struct target_siginfo info;
|
584 | 66fb9763 | bellard | struct target_ucontext uc;
|
585 | 66fb9763 | bellard | struct target_fpstate fpstate;
|
586 | 66fb9763 | bellard | char retcode[8]; |
587 | 66fb9763 | bellard | }; |
588 | 66fb9763 | bellard | |
589 | 66fb9763 | bellard | /*
|
590 | 66fb9763 | bellard | * Set up a signal frame.
|
591 | 66fb9763 | bellard | */
|
592 | 66fb9763 | bellard | |
593 | 66fb9763 | bellard | /* XXX: save x87 state */
|
594 | 66fb9763 | bellard | static int |
595 | 66fb9763 | bellard | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, |
596 | 66fb9763 | bellard | CPUX86State *env, unsigned long mask) |
597 | 66fb9763 | bellard | { |
598 | 66fb9763 | bellard | int err = 0; |
599 | 66fb9763 | bellard | |
600 | a52c757c | bellard | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
601 | a52c757c | bellard | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); |
602 | a52c757c | bellard | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); |
603 | a52c757c | bellard | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); |
604 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EDI], &sc->edi); |
605 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESI], &sc->esi); |
606 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EBP], &sc->ebp); |
607 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESP], &sc->esp); |
608 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EBX], &sc->ebx); |
609 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EDX], &sc->edx); |
610 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ECX], &sc->ecx); |
611 | 66fb9763 | bellard | err |= __put_user(env->regs[R_EAX], &sc->eax); |
612 | 66099dd9 | bellard | err |= __put_user(env->exception_index, &sc->trapno); |
613 | 66099dd9 | bellard | err |= __put_user(env->error_code, &sc->err); |
614 | 66fb9763 | bellard | err |= __put_user(env->eip, &sc->eip); |
615 | a52c757c | bellard | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
616 | 66fb9763 | bellard | err |= __put_user(env->eflags, &sc->eflags); |
617 | 66fb9763 | bellard | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); |
618 | a52c757c | bellard | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
619 | ed2dcdf6 | bellard | |
620 | ed2dcdf6 | bellard | cpu_x86_fsave(env, (void *)fpstate, 1); |
621 | ed2dcdf6 | bellard | fpstate->status = fpstate->sw; |
622 | ed2dcdf6 | bellard | err |= __put_user(0xffff, &fpstate->magic);
|
623 | ed2dcdf6 | bellard | err |= __put_user(fpstate, &sc->fpstate); |
624 | ed2dcdf6 | bellard | |
625 | 66fb9763 | bellard | /* non-iBCS2 extensions.. */
|
626 | 66fb9763 | bellard | err |= __put_user(mask, &sc->oldmask); |
627 | a52c757c | bellard | err |= __put_user(env->cr[2], &sc->cr2);
|
628 | 66fb9763 | bellard | return err;
|
629 | 31e31b8a | bellard | } |
630 | 31e31b8a | bellard | |
631 | 66fb9763 | bellard | /*
|
632 | 66fb9763 | bellard | * Determine which stack to use..
|
633 | 66fb9763 | bellard | */
|
634 | 31e31b8a | bellard | |
635 | 66fb9763 | bellard | static inline void * |
636 | 66fb9763 | bellard | get_sigframe(struct emulated_sigaction *ka, CPUX86State *env, size_t frame_size)
|
637 | 31e31b8a | bellard | { |
638 | 66fb9763 | bellard | unsigned long esp; |
639 | 66fb9763 | bellard | |
640 | 66fb9763 | bellard | /* Default to using normal stack */
|
641 | 66fb9763 | bellard | esp = env->regs[R_ESP]; |
642 | 66fb9763 | bellard | #if 0
|
643 | 66fb9763 | bellard | /* This is the X/Open sanctioned signal stack switching. */
|
644 | 66fb9763 | bellard | if (ka->sa.sa_flags & SA_ONSTACK) {
|
645 | 66fb9763 | bellard | if (sas_ss_flags(esp) == 0)
|
646 | 66fb9763 | bellard | esp = current->sas_ss_sp + current->sas_ss_size;
|
647 | 66fb9763 | bellard | }
|
648 | 66fb9763 | bellard | |
649 | 66fb9763 | bellard | /* This is the legacy signal stack switching. */
|
650 | a52c757c | bellard | else
|
651 | 66fb9763 | bellard | #endif
|
652 | a52c757c | bellard | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
653 | a52c757c | bellard | !(ka->sa.sa_flags & TARGET_SA_RESTORER) && |
654 | a52c757c | bellard | ka->sa.sa_restorer) { |
655 | a52c757c | bellard | esp = (unsigned long) ka->sa.sa_restorer; |
656 | a52c757c | bellard | } |
657 | a52c757c | bellard | return (void *)((esp - frame_size) & -8ul); |
658 | 66fb9763 | bellard | } |
659 | 66fb9763 | bellard | |
660 | 66fb9763 | bellard | static void setup_frame(int sig, struct emulated_sigaction *ka, |
661 | 66fb9763 | bellard | target_sigset_t *set, CPUX86State *env) |
662 | 66fb9763 | bellard | { |
663 | 66fb9763 | bellard | struct sigframe *frame;
|
664 | 9231944d | bellard | int i, err = 0; |
665 | 66fb9763 | bellard | |
666 | 66fb9763 | bellard | frame = get_sigframe(ka, env, sizeof(*frame));
|
667 | 66fb9763 | bellard | |
668 | 66fb9763 | bellard | if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) |
669 | 66fb9763 | bellard | goto give_sigsegv;
|
670 | 66fb9763 | bellard | err |= __put_user((/*current->exec_domain
|
671 | 66fb9763 | bellard | && current->exec_domain->signal_invmap
|
672 | 66fb9763 | bellard | && sig < 32
|
673 | 66fb9763 | bellard | ? current->exec_domain->signal_invmap[sig]
|
674 | 66fb9763 | bellard | : */ sig),
|
675 | 66fb9763 | bellard | &frame->sig); |
676 | 66fb9763 | bellard | if (err)
|
677 | 66fb9763 | bellard | goto give_sigsegv;
|
678 | 66fb9763 | bellard | |
679 | 66fb9763 | bellard | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0]);
|
680 | 66fb9763 | bellard | if (err)
|
681 | 66fb9763 | bellard | goto give_sigsegv;
|
682 | 66fb9763 | bellard | |
683 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
684 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
685 | 9231944d | bellard | goto give_sigsegv;
|
686 | 9231944d | bellard | } |
687 | 66fb9763 | bellard | |
688 | 66fb9763 | bellard | /* Set up to return from userspace. If provided, use a stub
|
689 | 66fb9763 | bellard | already in userspace. */
|
690 | 66fb9763 | bellard | if (ka->sa.sa_flags & TARGET_SA_RESTORER) {
|
691 | 66fb9763 | bellard | err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); |
692 | 66fb9763 | bellard | } else {
|
693 | 66fb9763 | bellard | err |= __put_user(frame->retcode, &frame->pretcode); |
694 | 66fb9763 | bellard | /* This is popl %eax ; movl $,%eax ; int $0x80 */
|
695 | 66fb9763 | bellard | err |= __put_user(0xb858, (short *)(frame->retcode+0)); |
696 | 66fb9763 | bellard | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
697 | 66fb9763 | bellard | err |= __put_user(0x80cd, (short *)(frame->retcode+6)); |
698 | 66fb9763 | bellard | } |
699 | 66fb9763 | bellard | |
700 | 66fb9763 | bellard | if (err)
|
701 | 66fb9763 | bellard | goto give_sigsegv;
|
702 | 66fb9763 | bellard | |
703 | 66fb9763 | bellard | /* Set up registers for signal handler */
|
704 | 66fb9763 | bellard | env->regs[R_ESP] = (unsigned long) frame; |
705 | 66fb9763 | bellard | env->eip = (unsigned long) ka->sa._sa_handler; |
706 | 66fb9763 | bellard | |
707 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, __USER_DS); |
708 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, __USER_DS); |
709 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, __USER_DS); |
710 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, __USER_CS); |
711 | 66fb9763 | bellard | env->eflags &= ~TF_MASK; |
712 | 66fb9763 | bellard | |
713 | 66fb9763 | bellard | return;
|
714 | 66fb9763 | bellard | |
715 | 66fb9763 | bellard | give_sigsegv:
|
716 | 66fb9763 | bellard | if (sig == TARGET_SIGSEGV)
|
717 | 66fb9763 | bellard | ka->sa._sa_handler = TARGET_SIG_DFL; |
718 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV /* , current */);
|
719 | 66fb9763 | bellard | } |
720 | 66fb9763 | bellard | |
721 | 9de5e440 | bellard | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
722 | 9de5e440 | bellard | target_siginfo_t *info, |
723 | 66fb9763 | bellard | target_sigset_t *set, CPUX86State *env) |
724 | 66fb9763 | bellard | { |
725 | 66fb9763 | bellard | struct rt_sigframe *frame;
|
726 | 9231944d | bellard | int i, err = 0; |
727 | 66fb9763 | bellard | |
728 | 66fb9763 | bellard | frame = get_sigframe(ka, env, sizeof(*frame));
|
729 | 66fb9763 | bellard | |
730 | 66fb9763 | bellard | if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) |
731 | 66fb9763 | bellard | goto give_sigsegv;
|
732 | 66fb9763 | bellard | |
733 | 66fb9763 | bellard | err |= __put_user((/*current->exec_domain
|
734 | 66fb9763 | bellard | && current->exec_domain->signal_invmap
|
735 | 66fb9763 | bellard | && sig < 32
|
736 | 66fb9763 | bellard | ? current->exec_domain->signal_invmap[sig]
|
737 | 66fb9763 | bellard | : */sig),
|
738 | 66fb9763 | bellard | &frame->sig); |
739 | 66fb9763 | bellard | err |= __put_user((target_ulong)&frame->info, &frame->pinfo); |
740 | 66fb9763 | bellard | err |= __put_user((target_ulong)&frame->uc, &frame->puc); |
741 | 66fb9763 | bellard | err |= copy_siginfo_to_user(&frame->info, info); |
742 | 66fb9763 | bellard | if (err)
|
743 | 66fb9763 | bellard | goto give_sigsegv;
|
744 | 31e31b8a | bellard | |
745 | 66fb9763 | bellard | /* Create the ucontext. */
|
746 | 66fb9763 | bellard | err |= __put_user(0, &frame->uc.uc_flags);
|
747 | 66fb9763 | bellard | err |= __put_user(0, &frame->uc.uc_link);
|
748 | 66fb9763 | bellard | err |= __put_user(/*current->sas_ss_sp*/ 0, &frame->uc.uc_stack.ss_sp); |
749 | 66fb9763 | bellard | err |= __put_user(/* sas_ss_flags(regs->esp) */ 0, |
750 | 66fb9763 | bellard | &frame->uc.uc_stack.ss_flags); |
751 | 66fb9763 | bellard | err |= __put_user(/* current->sas_ss_size */ 0, &frame->uc.uc_stack.ss_size); |
752 | 66fb9763 | bellard | err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate, |
753 | 66fb9763 | bellard | env, set->sig[0]);
|
754 | 9231944d | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
755 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->uc.uc_sigmask.sig[i]))
|
756 | 9231944d | bellard | goto give_sigsegv;
|
757 | 9231944d | bellard | } |
758 | 31e31b8a | bellard | |
759 | 66fb9763 | bellard | /* Set up to return from userspace. If provided, use a stub
|
760 | 66fb9763 | bellard | already in userspace. */
|
761 | 66fb9763 | bellard | if (ka->sa.sa_flags & TARGET_SA_RESTORER) {
|
762 | 66fb9763 | bellard | err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); |
763 | 66fb9763 | bellard | } else {
|
764 | 66fb9763 | bellard | err |= __put_user(frame->retcode, &frame->pretcode); |
765 | 66fb9763 | bellard | /* This is movl $,%eax ; int $0x80 */
|
766 | 66fb9763 | bellard | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
767 | 66fb9763 | bellard | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
768 | 66fb9763 | bellard | err |= __put_user(0x80cd, (short *)(frame->retcode+5)); |
769 | 66fb9763 | bellard | } |
770 | 66fb9763 | bellard | |
771 | 66fb9763 | bellard | if (err)
|
772 | 66fb9763 | bellard | goto give_sigsegv;
|
773 | 66fb9763 | bellard | |
774 | 66fb9763 | bellard | /* Set up registers for signal handler */
|
775 | 66fb9763 | bellard | env->regs[R_ESP] = (unsigned long) frame; |
776 | 66fb9763 | bellard | env->eip = (unsigned long) ka->sa._sa_handler; |
777 | 66fb9763 | bellard | |
778 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, __USER_DS); |
779 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, __USER_DS); |
780 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, __USER_DS); |
781 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, __USER_CS); |
782 | 66fb9763 | bellard | env->eflags &= ~TF_MASK; |
783 | 66fb9763 | bellard | |
784 | 66fb9763 | bellard | return;
|
785 | 66fb9763 | bellard | |
786 | 66fb9763 | bellard | give_sigsegv:
|
787 | 66fb9763 | bellard | if (sig == TARGET_SIGSEGV)
|
788 | 66fb9763 | bellard | ka->sa._sa_handler = TARGET_SIG_DFL; |
789 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV /* , current */);
|
790 | 66fb9763 | bellard | } |
791 | 66fb9763 | bellard | |
792 | 66fb9763 | bellard | static int |
793 | 66fb9763 | bellard | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) |
794 | 66fb9763 | bellard | { |
795 | 66fb9763 | bellard | unsigned int err = 0; |
796 | 66fb9763 | bellard | |
797 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_GS, lduw(&sc->gs)); |
798 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_FS, lduw(&sc->fs)); |
799 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_ES, lduw(&sc->es)); |
800 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_DS, lduw(&sc->ds)); |
801 | 66fb9763 | bellard | |
802 | 66fb9763 | bellard | env->regs[R_EDI] = ldl(&sc->edi); |
803 | 66fb9763 | bellard | env->regs[R_ESI] = ldl(&sc->esi); |
804 | 66fb9763 | bellard | env->regs[R_EBP] = ldl(&sc->ebp); |
805 | 66fb9763 | bellard | env->regs[R_ESP] = ldl(&sc->esp); |
806 | 66fb9763 | bellard | env->regs[R_EBX] = ldl(&sc->ebx); |
807 | 66fb9763 | bellard | env->regs[R_EDX] = ldl(&sc->edx); |
808 | 66fb9763 | bellard | env->regs[R_ECX] = ldl(&sc->ecx); |
809 | 66fb9763 | bellard | env->eip = ldl(&sc->eip); |
810 | 66fb9763 | bellard | |
811 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_CS, lduw(&sc->cs) | 3);
|
812 | 66fb9763 | bellard | cpu_x86_load_seg(env, R_SS, lduw(&sc->ss) | 3);
|
813 | 66fb9763 | bellard | |
814 | 66fb9763 | bellard | { |
815 | 66fb9763 | bellard | unsigned int tmpflags; |
816 | 66fb9763 | bellard | tmpflags = ldl(&sc->eflags); |
817 | 66fb9763 | bellard | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); |
818 | 66fb9763 | bellard | // regs->orig_eax = -1; /* disable syscall checks */
|
819 | 66fb9763 | bellard | } |
820 | 66fb9763 | bellard | |
821 | 66fb9763 | bellard | { |
822 | 66fb9763 | bellard | struct _fpstate * buf;
|
823 | ed2dcdf6 | bellard | buf = (void *)ldl(&sc->fpstate);
|
824 | 66fb9763 | bellard | if (buf) {
|
825 | ed2dcdf6 | bellard | #if 0
|
826 | 66fb9763 | bellard | if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
|
827 | 66fb9763 | bellard | goto badframe;
|
828 | ed2dcdf6 | bellard | #endif
|
829 | ed2dcdf6 | bellard | cpu_x86_frstor(env, (void *)buf, 1); |
830 | 66fb9763 | bellard | } |
831 | 66fb9763 | bellard | } |
832 | ed2dcdf6 | bellard | |
833 | 66fb9763 | bellard | *peax = ldl(&sc->eax); |
834 | 66fb9763 | bellard | return err;
|
835 | 66fb9763 | bellard | #if 0
|
836 | 66fb9763 | bellard | badframe:
|
837 | 66fb9763 | bellard | return 1;
|
838 | 66fb9763 | bellard | #endif
|
839 | 66fb9763 | bellard | } |
840 | 66fb9763 | bellard | |
841 | 66fb9763 | bellard | long do_sigreturn(CPUX86State *env)
|
842 | 66fb9763 | bellard | { |
843 | 66fb9763 | bellard | struct sigframe *frame = (struct sigframe *)(env->regs[R_ESP] - 8); |
844 | 66fb9763 | bellard | target_sigset_t target_set; |
845 | 66fb9763 | bellard | sigset_t set; |
846 | 66fb9763 | bellard | int eax, i;
|
847 | 66fb9763 | bellard | |
848 | 447db213 | bellard | #if defined(DEBUG_SIGNAL)
|
849 | 447db213 | bellard | fprintf(stderr, "do_sigreturn\n");
|
850 | 447db213 | bellard | #endif
|
851 | 66fb9763 | bellard | /* set blocked signals */
|
852 | 9231944d | bellard | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
853 | 9231944d | bellard | goto badframe;
|
854 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
855 | 9231944d | bellard | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) |
856 | 9231944d | bellard | goto badframe;
|
857 | 9231944d | bellard | } |
858 | 66fb9763 | bellard | |
859 | 9231944d | bellard | target_to_host_sigset_internal(&set, &target_set); |
860 | 66fb9763 | bellard | sigprocmask(SIG_SETMASK, &set, NULL);
|
861 | 66fb9763 | bellard | |
862 | 66fb9763 | bellard | /* restore registers */
|
863 | 66fb9763 | bellard | if (restore_sigcontext(env, &frame->sc, &eax))
|
864 | 66fb9763 | bellard | goto badframe;
|
865 | 66fb9763 | bellard | return eax;
|
866 | 66fb9763 | bellard | |
867 | 66fb9763 | bellard | badframe:
|
868 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV); |
869 | 66fb9763 | bellard | return 0; |
870 | 66fb9763 | bellard | } |
871 | 66fb9763 | bellard | |
872 | 66fb9763 | bellard | long do_rt_sigreturn(CPUX86State *env)
|
873 | 66fb9763 | bellard | { |
874 | 66fb9763 | bellard | struct rt_sigframe *frame = (struct rt_sigframe *)(env->regs[R_ESP] - 4); |
875 | 66fb9763 | bellard | sigset_t set; |
876 | 66fb9763 | bellard | // stack_t st;
|
877 | 66fb9763 | bellard | int eax;
|
878 | 66fb9763 | bellard | |
879 | 66fb9763 | bellard | #if 0
|
880 | 66fb9763 | bellard | if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
|
881 | 66fb9763 | bellard | goto badframe;
|
882 | 66fb9763 | bellard | #endif
|
883 | 9231944d | bellard | target_to_host_sigset(&set, &frame->uc.uc_sigmask); |
884 | 66fb9763 | bellard | sigprocmask(SIG_SETMASK, &set, NULL);
|
885 | 66fb9763 | bellard | |
886 | 66fb9763 | bellard | if (restore_sigcontext(env, &frame->uc.uc_mcontext, &eax))
|
887 | 66fb9763 | bellard | goto badframe;
|
888 | 66fb9763 | bellard | |
889 | 66fb9763 | bellard | #if 0
|
890 | 66fb9763 | bellard | if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
|
891 | 66fb9763 | bellard | goto badframe;
|
892 | 66fb9763 | bellard | /* It is more difficult to avoid calling this function than to
|
893 | 66fb9763 | bellard | call it and ignore errors. */
|
894 | 66fb9763 | bellard | do_sigaltstack(&st, NULL, regs->esp);
|
895 | 66fb9763 | bellard | #endif
|
896 | 66fb9763 | bellard | return eax;
|
897 | 66fb9763 | bellard | |
898 | 66fb9763 | bellard | badframe:
|
899 | 66fb9763 | bellard | force_sig(TARGET_SIGSEGV); |
900 | 66fb9763 | bellard | return 0; |
901 | 66fb9763 | bellard | } |
902 | 66fb9763 | bellard | |
903 | 43fff238 | bellard | #elif defined(TARGET_ARM)
|
904 | 43fff238 | bellard | |
905 | 43fff238 | bellard | struct target_sigcontext {
|
906 | 43fff238 | bellard | target_ulong trap_no; |
907 | 43fff238 | bellard | target_ulong error_code; |
908 | 43fff238 | bellard | target_ulong oldmask; |
909 | 43fff238 | bellard | target_ulong arm_r0; |
910 | 43fff238 | bellard | target_ulong arm_r1; |
911 | 43fff238 | bellard | target_ulong arm_r2; |
912 | 43fff238 | bellard | target_ulong arm_r3; |
913 | 43fff238 | bellard | target_ulong arm_r4; |
914 | 43fff238 | bellard | target_ulong arm_r5; |
915 | 43fff238 | bellard | target_ulong arm_r6; |
916 | 43fff238 | bellard | target_ulong arm_r7; |
917 | 43fff238 | bellard | target_ulong arm_r8; |
918 | 43fff238 | bellard | target_ulong arm_r9; |
919 | 43fff238 | bellard | target_ulong arm_r10; |
920 | 43fff238 | bellard | target_ulong arm_fp; |
921 | 43fff238 | bellard | target_ulong arm_ip; |
922 | 43fff238 | bellard | target_ulong arm_sp; |
923 | 43fff238 | bellard | target_ulong arm_lr; |
924 | 43fff238 | bellard | target_ulong arm_pc; |
925 | 43fff238 | bellard | target_ulong arm_cpsr; |
926 | 43fff238 | bellard | target_ulong fault_address; |
927 | 43fff238 | bellard | }; |
928 | 43fff238 | bellard | |
929 | 43fff238 | bellard | typedef struct target_sigaltstack { |
930 | 43fff238 | bellard | target_ulong ss_sp; |
931 | 43fff238 | bellard | int ss_flags;
|
932 | 43fff238 | bellard | target_ulong ss_size; |
933 | 43fff238 | bellard | } target_stack_t; |
934 | 43fff238 | bellard | |
935 | 43fff238 | bellard | struct target_ucontext {
|
936 | 43fff238 | bellard | target_ulong uc_flags; |
937 | 43fff238 | bellard | target_ulong uc_link; |
938 | 43fff238 | bellard | target_stack_t uc_stack; |
939 | 43fff238 | bellard | struct target_sigcontext uc_mcontext;
|
940 | 43fff238 | bellard | target_sigset_t uc_sigmask; /* mask last for extensibility */
|
941 | 43fff238 | bellard | }; |
942 | 43fff238 | bellard | |
943 | 43fff238 | bellard | struct sigframe
|
944 | 43fff238 | bellard | { |
945 | 43fff238 | bellard | struct target_sigcontext sc;
|
946 | 43fff238 | bellard | target_ulong extramask[TARGET_NSIG_WORDS-1];
|
947 | 43fff238 | bellard | target_ulong retcode; |
948 | 43fff238 | bellard | }; |
949 | 43fff238 | bellard | |
950 | 43fff238 | bellard | struct rt_sigframe
|
951 | 43fff238 | bellard | { |
952 | 43fff238 | bellard | struct target_siginfo *pinfo;
|
953 | 43fff238 | bellard | void *puc;
|
954 | 43fff238 | bellard | struct target_siginfo info;
|
955 | 43fff238 | bellard | struct target_ucontext uc;
|
956 | 43fff238 | bellard | target_ulong retcode; |
957 | 43fff238 | bellard | }; |
958 | 43fff238 | bellard | |
959 | 43fff238 | bellard | #define TARGET_CONFIG_CPU_32 1 |
960 | 43fff238 | bellard | |
961 | 43fff238 | bellard | /*
|
962 | 43fff238 | bellard | * For ARM syscalls, we encode the syscall number into the instruction.
|
963 | 43fff238 | bellard | */
|
964 | 43fff238 | bellard | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) |
965 | 43fff238 | bellard | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) |
966 | 43fff238 | bellard | |
967 | 43fff238 | bellard | /*
|
968 | 43fff238 | bellard | * For Thumb syscalls, we pass the syscall number via r7. We therefore
|
969 | 43fff238 | bellard | * need two 16-bit instructions.
|
970 | 43fff238 | bellard | */
|
971 | 43fff238 | bellard | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) |
972 | 43fff238 | bellard | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) |
973 | 43fff238 | bellard | |
974 | 43fff238 | bellard | static const target_ulong retcodes[4] = { |
975 | 43fff238 | bellard | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
976 | 43fff238 | bellard | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN |
977 | 43fff238 | bellard | }; |
978 | 43fff238 | bellard | |
979 | 43fff238 | bellard | |
980 | 43fff238 | bellard | #define __put_user_error(x,p,e) __put_user(x, p)
|
981 | 43fff238 | bellard | #define __get_user_error(x,p,e) __get_user(x, p)
|
982 | 43fff238 | bellard | |
983 | 43fff238 | bellard | static inline int valid_user_regs(CPUState *regs) |
984 | 43fff238 | bellard | { |
985 | 43fff238 | bellard | return 1; |
986 | 43fff238 | bellard | } |
987 | 43fff238 | bellard | |
988 | 43fff238 | bellard | static int |
989 | 43fff238 | bellard | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
990 | 43fff238 | bellard | CPUState *env, unsigned long mask) |
991 | 43fff238 | bellard | { |
992 | 43fff238 | bellard | int err = 0; |
993 | 43fff238 | bellard | |
994 | 43fff238 | bellard | __put_user_error(env->regs[0], &sc->arm_r0, err);
|
995 | 43fff238 | bellard | __put_user_error(env->regs[1], &sc->arm_r1, err);
|
996 | 43fff238 | bellard | __put_user_error(env->regs[2], &sc->arm_r2, err);
|
997 | 43fff238 | bellard | __put_user_error(env->regs[3], &sc->arm_r3, err);
|
998 | 43fff238 | bellard | __put_user_error(env->regs[4], &sc->arm_r4, err);
|
999 | 43fff238 | bellard | __put_user_error(env->regs[5], &sc->arm_r5, err);
|
1000 | 43fff238 | bellard | __put_user_error(env->regs[6], &sc->arm_r6, err);
|
1001 | 43fff238 | bellard | __put_user_error(env->regs[7], &sc->arm_r7, err);
|
1002 | 43fff238 | bellard | __put_user_error(env->regs[8], &sc->arm_r8, err);
|
1003 | 43fff238 | bellard | __put_user_error(env->regs[9], &sc->arm_r9, err);
|
1004 | 43fff238 | bellard | __put_user_error(env->regs[10], &sc->arm_r10, err);
|
1005 | 43fff238 | bellard | __put_user_error(env->regs[11], &sc->arm_fp, err);
|
1006 | 43fff238 | bellard | __put_user_error(env->regs[12], &sc->arm_ip, err);
|
1007 | 43fff238 | bellard | __put_user_error(env->regs[13], &sc->arm_sp, err);
|
1008 | 43fff238 | bellard | __put_user_error(env->regs[14], &sc->arm_lr, err);
|
1009 | 43fff238 | bellard | __put_user_error(env->regs[15], &sc->arm_pc, err);
|
1010 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1011 | 43fff238 | bellard | __put_user_error(env->cpsr, &sc->arm_cpsr, err); |
1012 | 43fff238 | bellard | #endif
|
1013 | 43fff238 | bellard | |
1014 | 43fff238 | bellard | __put_user_error(/* current->thread.trap_no */ 0, &sc->trap_no, err); |
1015 | 43fff238 | bellard | __put_user_error(/* current->thread.error_code */ 0, &sc->error_code, err); |
1016 | 43fff238 | bellard | __put_user_error(/* current->thread.address */ 0, &sc->fault_address, err); |
1017 | 43fff238 | bellard | __put_user_error(mask, &sc->oldmask, err); |
1018 | 43fff238 | bellard | |
1019 | 43fff238 | bellard | return err;
|
1020 | 43fff238 | bellard | } |
1021 | 43fff238 | bellard | |
1022 | 43fff238 | bellard | static inline void * |
1023 | 43fff238 | bellard | get_sigframe(struct emulated_sigaction *ka, CPUState *regs, int framesize) |
1024 | 43fff238 | bellard | { |
1025 | 43fff238 | bellard | unsigned long sp = regs->regs[13]; |
1026 | 43fff238 | bellard | |
1027 | 43fff238 | bellard | #if 0
|
1028 | 43fff238 | bellard | /*
|
1029 | 43fff238 | bellard | * This is the X/Open sanctioned signal stack switching.
|
1030 | 43fff238 | bellard | */
|
1031 | 43fff238 | bellard | if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp))
|
1032 | 43fff238 | bellard | sp = current->sas_ss_sp + current->sas_ss_size;
|
1033 | 43fff238 | bellard | #endif
|
1034 | 43fff238 | bellard | /*
|
1035 | 43fff238 | bellard | * ATPCS B01 mandates 8-byte alignment
|
1036 | 43fff238 | bellard | */
|
1037 | 43fff238 | bellard | return (void *)((sp - framesize) & ~7); |
1038 | 43fff238 | bellard | } |
1039 | 43fff238 | bellard | |
1040 | 43fff238 | bellard | static int |
1041 | 43fff238 | bellard | setup_return(CPUState *env, struct emulated_sigaction *ka,
|
1042 | 43fff238 | bellard | target_ulong *rc, void *frame, int usig) |
1043 | 43fff238 | bellard | { |
1044 | 43fff238 | bellard | target_ulong handler = (target_ulong)ka->sa._sa_handler; |
1045 | 43fff238 | bellard | target_ulong retcode; |
1046 | 43fff238 | bellard | int thumb = 0; |
1047 | 43fff238 | bellard | #if defined(TARGET_CONFIG_CPU_32)
|
1048 | 43fff238 | bellard | target_ulong cpsr = env->cpsr; |
1049 | 43fff238 | bellard | |
1050 | 43fff238 | bellard | #if 0
|
1051 | 43fff238 | bellard | /*
|
1052 | 43fff238 | bellard | * Maybe we need to deliver a 32-bit signal to a 26-bit task.
|
1053 | 43fff238 | bellard | */
|
1054 | 43fff238 | bellard | if (ka->sa.sa_flags & SA_THIRTYTWO)
|
1055 | 43fff238 | bellard | cpsr = (cpsr & ~MODE_MASK) | USR_MODE;
|
1056 | 43fff238 | bellard | |
1057 | 43fff238 | bellard | #ifdef CONFIG_ARM_THUMB
|
1058 | 43fff238 | bellard | if (elf_hwcap & HWCAP_THUMB) {
|
1059 | 43fff238 | bellard | /*
|
1060 | 43fff238 | bellard | * The LSB of the handler determines if we're going to
|
1061 | 43fff238 | bellard | * be using THUMB or ARM mode for this signal handler.
|
1062 | 43fff238 | bellard | */
|
1063 | 43fff238 | bellard | thumb = handler & 1;
|
1064 | 43fff238 | bellard | |
1065 | 43fff238 | bellard | if (thumb)
|
1066 | 43fff238 | bellard | cpsr |= T_BIT;
|
1067 | 43fff238 | bellard | else
|
1068 | 43fff238 | bellard | cpsr &= ~T_BIT;
|
1069 | 43fff238 | bellard | }
|
1070 | 43fff238 | bellard | #endif
|
1071 | 43fff238 | bellard | #endif
|
1072 | 43fff238 | bellard | #endif /* TARGET_CONFIG_CPU_32 */ |
1073 | 43fff238 | bellard | |
1074 | 43fff238 | bellard | if (ka->sa.sa_flags & TARGET_SA_RESTORER) {
|
1075 | 43fff238 | bellard | retcode = (target_ulong)ka->sa.sa_restorer; |
1076 | 43fff238 | bellard | } else {
|
1077 | 43fff238 | bellard | unsigned int idx = thumb; |
1078 | 43fff238 | bellard | |
1079 | 43fff238 | bellard | if (ka->sa.sa_flags & TARGET_SA_SIGINFO)
|
1080 | 43fff238 | bellard | idx += 2;
|
1081 | 43fff238 | bellard | |
1082 | 43fff238 | bellard | if (__put_user(retcodes[idx], rc))
|
1083 | 43fff238 | bellard | return 1; |
1084 | 43fff238 | bellard | #if 0
|
1085 | 43fff238 | bellard | flush_icache_range((target_ulong)rc,
|
1086 | 43fff238 | bellard | (target_ulong)(rc + 1));
|
1087 | 43fff238 | bellard | #endif
|
1088 | 43fff238 | bellard | retcode = ((target_ulong)rc) + thumb; |
1089 | 43fff238 | bellard | } |
1090 | 43fff238 | bellard | |
1091 | 43fff238 | bellard | env->regs[0] = usig;
|
1092 | 43fff238 | bellard | env->regs[13] = (target_ulong)frame;
|
1093 | 43fff238 | bellard | env->regs[14] = retcode;
|
1094 | 43fff238 | bellard | env->regs[15] = handler & (thumb ? ~1 : ~3); |
1095 | 43fff238 | bellard | |
1096 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1097 | 43fff238 | bellard | env->cpsr = cpsr; |
1098 | 43fff238 | bellard | #endif
|
1099 | 43fff238 | bellard | |
1100 | 43fff238 | bellard | return 0; |
1101 | 43fff238 | bellard | } |
1102 | 43fff238 | bellard | |
1103 | 43fff238 | bellard | static void setup_frame(int usig, struct emulated_sigaction *ka, |
1104 | 43fff238 | bellard | target_sigset_t *set, CPUState *regs) |
1105 | 43fff238 | bellard | { |
1106 | 43fff238 | bellard | struct sigframe *frame = get_sigframe(ka, regs, sizeof(*frame)); |
1107 | 9231944d | bellard | int i, err = 0; |
1108 | 43fff238 | bellard | |
1109 | 43fff238 | bellard | err |= setup_sigcontext(&frame->sc, /*&frame->fpstate,*/ regs, set->sig[0]); |
1110 | 43fff238 | bellard | |
1111 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1112 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->extramask[i - 1])) |
1113 | 9231944d | bellard | return;
|
1114 | 43fff238 | bellard | } |
1115 | 43fff238 | bellard | |
1116 | 43fff238 | bellard | if (err == 0) |
1117 | 43fff238 | bellard | err = setup_return(regs, ka, &frame->retcode, frame, usig); |
1118 | 43fff238 | bellard | // return err;
|
1119 | 43fff238 | bellard | } |
1120 | 43fff238 | bellard | |
1121 | 43fff238 | bellard | static void setup_rt_frame(int usig, struct emulated_sigaction *ka, |
1122 | 43fff238 | bellard | target_siginfo_t *info, |
1123 | 43fff238 | bellard | target_sigset_t *set, CPUState *env) |
1124 | 43fff238 | bellard | { |
1125 | 43fff238 | bellard | struct rt_sigframe *frame = get_sigframe(ka, env, sizeof(*frame)); |
1126 | 9231944d | bellard | int i, err = 0; |
1127 | 43fff238 | bellard | |
1128 | 43fff238 | bellard | if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) |
1129 | edf779ff | bellard | return /* 1 */; |
1130 | edf779ff | bellard | |
1131 | 43fff238 | bellard | __put_user_error(&frame->info, (target_ulong *)&frame->pinfo, err); |
1132 | 43fff238 | bellard | __put_user_error(&frame->uc, (target_ulong *)&frame->puc, err); |
1133 | 43fff238 | bellard | err |= copy_siginfo_to_user(&frame->info, info); |
1134 | 43fff238 | bellard | |
1135 | 43fff238 | bellard | /* Clear all the bits of the ucontext we don't use. */
|
1136 | 43fff238 | bellard | err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
|
1137 | 43fff238 | bellard | |
1138 | 43fff238 | bellard | err |= setup_sigcontext(&frame->uc.uc_mcontext, /*&frame->fpstate,*/
|
1139 | 43fff238 | bellard | env, set->sig[0]);
|
1140 | 9231944d | bellard | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
1141 | 9231944d | bellard | if (__put_user(set->sig[i], &frame->uc.uc_sigmask.sig[i]))
|
1142 | 9231944d | bellard | return;
|
1143 | 9231944d | bellard | } |
1144 | 43fff238 | bellard | |
1145 | 43fff238 | bellard | if (err == 0) |
1146 | 43fff238 | bellard | err = setup_return(env, ka, &frame->retcode, frame, usig); |
1147 | 43fff238 | bellard | |
1148 | 43fff238 | bellard | if (err == 0) { |
1149 | 43fff238 | bellard | /*
|
1150 | 43fff238 | bellard | * For realtime signals we must also set the second and third
|
1151 | 43fff238 | bellard | * arguments for the signal handler.
|
1152 | 43fff238 | bellard | * -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06
|
1153 | 43fff238 | bellard | */
|
1154 | 43fff238 | bellard | env->regs[1] = (target_ulong)frame->pinfo;
|
1155 | 43fff238 | bellard | env->regs[2] = (target_ulong)frame->puc;
|
1156 | 43fff238 | bellard | } |
1157 | 43fff238 | bellard | |
1158 | 43fff238 | bellard | // return err;
|
1159 | 43fff238 | bellard | } |
1160 | 43fff238 | bellard | |
1161 | 43fff238 | bellard | static int |
1162 | 43fff238 | bellard | restore_sigcontext(CPUState *env, struct target_sigcontext *sc)
|
1163 | 43fff238 | bellard | { |
1164 | 43fff238 | bellard | int err = 0; |
1165 | 43fff238 | bellard | |
1166 | 43fff238 | bellard | __get_user_error(env->regs[0], &sc->arm_r0, err);
|
1167 | 43fff238 | bellard | __get_user_error(env->regs[1], &sc->arm_r1, err);
|
1168 | 43fff238 | bellard | __get_user_error(env->regs[2], &sc->arm_r2, err);
|
1169 | 43fff238 | bellard | __get_user_error(env->regs[3], &sc->arm_r3, err);
|
1170 | 43fff238 | bellard | __get_user_error(env->regs[4], &sc->arm_r4, err);
|
1171 | 43fff238 | bellard | __get_user_error(env->regs[5], &sc->arm_r5, err);
|
1172 | 43fff238 | bellard | __get_user_error(env->regs[6], &sc->arm_r6, err);
|
1173 | 43fff238 | bellard | __get_user_error(env->regs[7], &sc->arm_r7, err);
|
1174 | 43fff238 | bellard | __get_user_error(env->regs[8], &sc->arm_r8, err);
|
1175 | 43fff238 | bellard | __get_user_error(env->regs[9], &sc->arm_r9, err);
|
1176 | 43fff238 | bellard | __get_user_error(env->regs[10], &sc->arm_r10, err);
|
1177 | 43fff238 | bellard | __get_user_error(env->regs[11], &sc->arm_fp, err);
|
1178 | 43fff238 | bellard | __get_user_error(env->regs[12], &sc->arm_ip, err);
|
1179 | 43fff238 | bellard | __get_user_error(env->regs[13], &sc->arm_sp, err);
|
1180 | 43fff238 | bellard | __get_user_error(env->regs[14], &sc->arm_lr, err);
|
1181 | 43fff238 | bellard | __get_user_error(env->regs[15], &sc->arm_pc, err);
|
1182 | 43fff238 | bellard | #ifdef TARGET_CONFIG_CPU_32
|
1183 | 43fff238 | bellard | __get_user_error(env->cpsr, &sc->arm_cpsr, err); |
1184 | 43fff238 | bellard | #endif
|
1185 | 43fff238 | bellard | |
1186 | 43fff238 | bellard | err |= !valid_user_regs(env); |
1187 | 43fff238 | bellard | |
1188 | 43fff238 | bellard | return err;
|
1189 | 43fff238 | bellard | } |
1190 | 43fff238 | bellard | |
1191 | 43fff238 | bellard | long do_sigreturn(CPUState *env)
|
1192 | 43fff238 | bellard | { |
1193 | 43fff238 | bellard | struct sigframe *frame;
|
1194 | 43fff238 | bellard | target_sigset_t set; |
1195 | 43fff238 | bellard | sigset_t host_set; |
1196 | 9231944d | bellard | int i;
|
1197 | 43fff238 | bellard | |
1198 | 43fff238 | bellard | /*
|
1199 | 43fff238 | bellard | * Since we stacked the signal on a 64-bit boundary,
|
1200 | 43fff238 | bellard | * then 'sp' should be word aligned here. If it's
|
1201 | 43fff238 | bellard | * not, then the user is trying to mess with us.
|
1202 | 43fff238 | bellard | */
|
1203 | 43fff238 | bellard | if (env->regs[13] & 7) |
1204 | 43fff238 | bellard | goto badframe;
|
1205 | 43fff238 | bellard | |
1206 | 43fff238 | bellard | frame = (struct sigframe *)env->regs[13]; |
1207 | 43fff238 | bellard | |
1208 | 43fff238 | bellard | #if 0
|
1209 | 43fff238 | bellard | if (verify_area(VERIFY_READ, frame, sizeof (*frame)))
|
1210 | 43fff238 | bellard | goto badframe;
|
1211 | 43fff238 | bellard | #endif
|
1212 | 9231944d | bellard | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1213 | 9231944d | bellard | goto badframe;
|
1214 | 9231944d | bellard | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1215 | 9231944d | bellard | if (__get_user(set.sig[i], &frame->extramask[i - 1])) |
1216 | 9231944d | bellard | goto badframe;
|
1217 | 9231944d | bellard | } |
1218 | 43fff238 | bellard | |
1219 | 9231944d | bellard | target_to_host_sigset_internal(&host_set, &set); |
1220 | 43fff238 | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1221 | 43fff238 | bellard | |
1222 | 43fff238 | bellard | if (restore_sigcontext(env, &frame->sc))
|
1223 | 43fff238 | bellard | goto badframe;
|
1224 | 43fff238 | bellard | |
1225 | 43fff238 | bellard | #if 0
|
1226 | 43fff238 | bellard | /* Send SIGTRAP if we're single-stepping */
|
1227 | 43fff238 | bellard | if (ptrace_cancel_bpt(current))
|
1228 | 43fff238 | bellard | send_sig(SIGTRAP, current, 1);
|
1229 | 43fff238 | bellard | #endif
|
1230 | 43fff238 | bellard | return env->regs[0]; |
1231 | 43fff238 | bellard | |
1232 | 43fff238 | bellard | badframe:
|
1233 | 43fff238 | bellard | force_sig(SIGSEGV /* , current */);
|
1234 | 43fff238 | bellard | return 0; |
1235 | 43fff238 | bellard | } |
1236 | 43fff238 | bellard | |
1237 | 43fff238 | bellard | long do_rt_sigreturn(CPUState *env)
|
1238 | 43fff238 | bellard | { |
1239 | 43fff238 | bellard | struct rt_sigframe *frame;
|
1240 | 43fff238 | bellard | sigset_t host_set; |
1241 | 43fff238 | bellard | |
1242 | 43fff238 | bellard | /*
|
1243 | 43fff238 | bellard | * Since we stacked the signal on a 64-bit boundary,
|
1244 | 43fff238 | bellard | * then 'sp' should be word aligned here. If it's
|
1245 | 43fff238 | bellard | * not, then the user is trying to mess with us.
|
1246 | 43fff238 | bellard | */
|
1247 | 43fff238 | bellard | if (env->regs[13] & 7) |
1248 | 43fff238 | bellard | goto badframe;
|
1249 | 43fff238 | bellard | |
1250 | 43fff238 | bellard | frame = (struct rt_sigframe *)env->regs[13]; |
1251 | 43fff238 | bellard | |
1252 | 43fff238 | bellard | #if 0
|
1253 | 43fff238 | bellard | if (verify_area(VERIFY_READ, frame, sizeof (*frame)))
|
1254 | 43fff238 | bellard | goto badframe;
|
1255 | 43fff238 | bellard | #endif
|
1256 | 9231944d | bellard | target_to_host_sigset(&host_set, &frame->uc.uc_sigmask); |
1257 | 43fff238 | bellard | sigprocmask(SIG_SETMASK, &host_set, NULL);
|
1258 | 43fff238 | bellard | |
1259 | 43fff238 | bellard | if (restore_sigcontext(env, &frame->uc.uc_mcontext))
|
1260 | 43fff238 | bellard | goto badframe;
|
1261 | 43fff238 | bellard | |
1262 | 43fff238 | bellard | #if 0
|
1263 | 43fff238 | bellard | /* Send SIGTRAP if we're single-stepping */
|
1264 | 43fff238 | bellard | if (ptrace_cancel_bpt(current))
|
1265 | 43fff238 | bellard | send_sig(SIGTRAP, current, 1);
|
1266 | 43fff238 | bellard | #endif
|
1267 | 43fff238 | bellard | return env->regs[0]; |
1268 | 43fff238 | bellard | |
1269 | 43fff238 | bellard | badframe:
|
1270 | 43fff238 | bellard | force_sig(SIGSEGV /* , current */);
|
1271 | 43fff238 | bellard | return 0; |
1272 | 43fff238 | bellard | } |
1273 | 43fff238 | bellard | |
1274 | b346ff46 | bellard | #else
|
1275 | b346ff46 | bellard | |
1276 | b346ff46 | bellard | static void setup_frame(int sig, struct emulated_sigaction *ka, |
1277 | b346ff46 | bellard | target_sigset_t *set, CPUState *env) |
1278 | b346ff46 | bellard | { |
1279 | b346ff46 | bellard | fprintf(stderr, "setup_frame: not implemented\n");
|
1280 | b346ff46 | bellard | } |
1281 | b346ff46 | bellard | |
1282 | b346ff46 | bellard | static void setup_rt_frame(int sig, struct emulated_sigaction *ka, |
1283 | b346ff46 | bellard | target_siginfo_t *info, |
1284 | b346ff46 | bellard | target_sigset_t *set, CPUState *env) |
1285 | b346ff46 | bellard | { |
1286 | b346ff46 | bellard | fprintf(stderr, "setup_rt_frame: not implemented\n");
|
1287 | b346ff46 | bellard | } |
1288 | b346ff46 | bellard | |
1289 | b346ff46 | bellard | long do_sigreturn(CPUState *env)
|
1290 | b346ff46 | bellard | { |
1291 | b346ff46 | bellard | fprintf(stderr, "do_sigreturn: not implemented\n");
|
1292 | b346ff46 | bellard | return -ENOSYS;
|
1293 | b346ff46 | bellard | } |
1294 | b346ff46 | bellard | |
1295 | b346ff46 | bellard | long do_rt_sigreturn(CPUState *env)
|
1296 | b346ff46 | bellard | { |
1297 | b346ff46 | bellard | fprintf(stderr, "do_rt_sigreturn: not implemented\n");
|
1298 | b346ff46 | bellard | return -ENOSYS;
|
1299 | b346ff46 | bellard | } |
1300 | b346ff46 | bellard | |
1301 | 66fb9763 | bellard | #endif
|
1302 | 66fb9763 | bellard | |
1303 | 66fb9763 | bellard | void process_pending_signals(void *cpu_env) |
1304 | 66fb9763 | bellard | { |
1305 | 66fb9763 | bellard | int sig;
|
1306 | 66fb9763 | bellard | target_ulong handler; |
1307 | 9de5e440 | bellard | sigset_t set, old_set; |
1308 | 9de5e440 | bellard | target_sigset_t target_old_set; |
1309 | 66fb9763 | bellard | struct emulated_sigaction *k;
|
1310 | 66fb9763 | bellard | struct sigqueue *q;
|
1311 | 66fb9763 | bellard | |
1312 | 31e31b8a | bellard | if (!signal_pending)
|
1313 | 31e31b8a | bellard | return;
|
1314 | 31e31b8a | bellard | |
1315 | 66fb9763 | bellard | k = sigact_table; |
1316 | 66fb9763 | bellard | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
1317 | 66fb9763 | bellard | if (k->pending)
|
1318 | 31e31b8a | bellard | goto handle_signal;
|
1319 | 66fb9763 | bellard | k++; |
1320 | 31e31b8a | bellard | } |
1321 | 31e31b8a | bellard | /* if no signal is pending, just return */
|
1322 | 31e31b8a | bellard | signal_pending = 0;
|
1323 | 31e31b8a | bellard | return;
|
1324 | 66fb9763 | bellard | |
1325 | 31e31b8a | bellard | handle_signal:
|
1326 | 66fb9763 | bellard | #ifdef DEBUG_SIGNAL
|
1327 | bc8a22cc | bellard | fprintf(stderr, "qemu: process signal %d\n", sig);
|
1328 | 66fb9763 | bellard | #endif
|
1329 | 66fb9763 | bellard | /* dequeue signal */
|
1330 | 66fb9763 | bellard | q = k->first; |
1331 | 66fb9763 | bellard | k->first = q->next; |
1332 | 66fb9763 | bellard | if (!k->first)
|
1333 | 66fb9763 | bellard | k->pending = 0;
|
1334 | 66fb9763 | bellard | |
1335 | 66fb9763 | bellard | handler = k->sa._sa_handler; |
1336 | 66fb9763 | bellard | if (handler == TARGET_SIG_DFL) {
|
1337 | 66fb9763 | bellard | /* default handler : ignore some signal. The other are fatal */
|
1338 | 66fb9763 | bellard | if (sig != TARGET_SIGCHLD &&
|
1339 | 66fb9763 | bellard | sig != TARGET_SIGURG && |
1340 | 66fb9763 | bellard | sig != TARGET_SIGWINCH) { |
1341 | 66fb9763 | bellard | force_sig(sig); |
1342 | 66fb9763 | bellard | } |
1343 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_IGN) { |
1344 | 66fb9763 | bellard | /* ignore sig */
|
1345 | 66fb9763 | bellard | } else if (handler == TARGET_SIG_ERR) { |
1346 | 66fb9763 | bellard | force_sig(sig); |
1347 | 66fb9763 | bellard | } else {
|
1348 | 9de5e440 | bellard | /* compute the blocked signals during the handler execution */
|
1349 | 9de5e440 | bellard | target_to_host_sigset(&set, &k->sa.sa_mask); |
1350 | 9de5e440 | bellard | /* SA_NODEFER indicates that the current signal should not be
|
1351 | 9de5e440 | bellard | blocked during the handler */
|
1352 | 9de5e440 | bellard | if (!(k->sa.sa_flags & TARGET_SA_NODEFER))
|
1353 | 9de5e440 | bellard | sigaddset(&set, target_to_host_signal(sig)); |
1354 | 9de5e440 | bellard | |
1355 | 9de5e440 | bellard | /* block signals in the handler using Linux */
|
1356 | 9de5e440 | bellard | sigprocmask(SIG_BLOCK, &set, &old_set); |
1357 | 9de5e440 | bellard | /* save the previous blocked signal state to restore it at the
|
1358 | 9de5e440 | bellard | end of the signal execution (see do_sigreturn) */
|
1359 | 9231944d | bellard | host_to_target_sigset_internal(&target_old_set, &old_set); |
1360 | 9de5e440 | bellard | |
1361 | bc8a22cc | bellard | /* if the CPU is in VM86 mode, we restore the 32 bit values */
|
1362 | bc8a22cc | bellard | #ifdef TARGET_I386
|
1363 | bc8a22cc | bellard | { |
1364 | bc8a22cc | bellard | CPUX86State *env = cpu_env; |
1365 | bc8a22cc | bellard | if (env->eflags & VM_MASK)
|
1366 | bc8a22cc | bellard | save_v86_state(env); |
1367 | bc8a22cc | bellard | } |
1368 | bc8a22cc | bellard | #endif
|
1369 | 9de5e440 | bellard | /* prepare the stack frame of the virtual CPU */
|
1370 | 66fb9763 | bellard | if (k->sa.sa_flags & TARGET_SA_SIGINFO)
|
1371 | 9de5e440 | bellard | setup_rt_frame(sig, k, &q->info, &target_old_set, cpu_env); |
1372 | 66fb9763 | bellard | else
|
1373 | 9de5e440 | bellard | setup_frame(sig, k, &target_old_set, cpu_env); |
1374 | 66fb9763 | bellard | if (k->sa.sa_flags & TARGET_SA_RESETHAND)
|
1375 | 66fb9763 | bellard | k->sa._sa_handler = TARGET_SIG_DFL; |
1376 | 31e31b8a | bellard | } |
1377 | 66fb9763 | bellard | if (q != &k->info)
|
1378 | 66fb9763 | bellard | free_sigqueue(q); |
1379 | 66fb9763 | bellard | } |
1380 | 31e31b8a | bellard |