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Commit | Line | Data |
---|---|---|
31e31b8a | 1 | /* |
66fb9763 | 2 | * Emulation of Linux signals |
5fafdf24 | 3 | * |
31e31b8a FB |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | #include <stdlib.h> | |
21 | #include <stdio.h> | |
66fb9763 | 22 | #include <string.h> |
31e31b8a | 23 | #include <stdarg.h> |
2677e107 | 24 | #include <unistd.h> |
31e31b8a | 25 | #include <signal.h> |
66fb9763 | 26 | #include <errno.h> |
31e31b8a FB |
27 | #include <sys/ucontext.h> |
28 | ||
3ef693a0 | 29 | #include "qemu.h" |
992f48a0 | 30 | #include "target_signal.h" |
66fb9763 FB |
31 | |
32 | //#define DEBUG_SIGNAL | |
33 | ||
a04e134a TS |
34 | struct target_sigaltstack target_sigaltstack_used = { |
35 | .ss_sp = 0, | |
36 | .ss_size = 0, | |
37 | .ss_flags = TARGET_SS_DISABLE, | |
38 | }; | |
39 | ||
624f7979 | 40 | static struct target_sigaction sigact_table[TARGET_NSIG]; |
31e31b8a | 41 | |
5fafdf24 | 42 | static void host_signal_handler(int host_signum, siginfo_t *info, |
66fb9763 FB |
43 | void *puc); |
44 | ||
9e5f5284 FB |
45 | static uint8_t host_to_target_signal_table[65] = { |
46 | [SIGHUP] = TARGET_SIGHUP, | |
47 | [SIGINT] = TARGET_SIGINT, | |
48 | [SIGQUIT] = TARGET_SIGQUIT, | |
49 | [SIGILL] = TARGET_SIGILL, | |
50 | [SIGTRAP] = TARGET_SIGTRAP, | |
51 | [SIGABRT] = TARGET_SIGABRT, | |
01e3b763 | 52 | /* [SIGIOT] = TARGET_SIGIOT,*/ |
9e5f5284 FB |
53 | [SIGBUS] = TARGET_SIGBUS, |
54 | [SIGFPE] = TARGET_SIGFPE, | |
55 | [SIGKILL] = TARGET_SIGKILL, | |
56 | [SIGUSR1] = TARGET_SIGUSR1, | |
57 | [SIGSEGV] = TARGET_SIGSEGV, | |
58 | [SIGUSR2] = TARGET_SIGUSR2, | |
59 | [SIGPIPE] = TARGET_SIGPIPE, | |
60 | [SIGALRM] = TARGET_SIGALRM, | |
61 | [SIGTERM] = TARGET_SIGTERM, | |
62 | #ifdef SIGSTKFLT | |
63 | [SIGSTKFLT] = TARGET_SIGSTKFLT, | |
64 | #endif | |
65 | [SIGCHLD] = TARGET_SIGCHLD, | |
66 | [SIGCONT] = TARGET_SIGCONT, | |
67 | [SIGSTOP] = TARGET_SIGSTOP, | |
68 | [SIGTSTP] = TARGET_SIGTSTP, | |
69 | [SIGTTIN] = TARGET_SIGTTIN, | |
70 | [SIGTTOU] = TARGET_SIGTTOU, | |
71 | [SIGURG] = TARGET_SIGURG, | |
72 | [SIGXCPU] = TARGET_SIGXCPU, | |
73 | [SIGXFSZ] = TARGET_SIGXFSZ, | |
74 | [SIGVTALRM] = TARGET_SIGVTALRM, | |
75 | [SIGPROF] = TARGET_SIGPROF, | |
76 | [SIGWINCH] = TARGET_SIGWINCH, | |
77 | [SIGIO] = TARGET_SIGIO, | |
78 | [SIGPWR] = TARGET_SIGPWR, | |
79 | [SIGSYS] = TARGET_SIGSYS, | |
80 | /* next signals stay the same */ | |
624f7979 PB |
81 | /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with |
82 | host libpthread signals. This assumes noone actually uses SIGRTMAX :-/ | |
83 | To fix this properly we need to do manual signal delivery multiplexed | |
84 | over a single host signal. */ | |
85 | [__SIGRTMIN] = __SIGRTMAX, | |
86 | [__SIGRTMAX] = __SIGRTMIN, | |
9e5f5284 FB |
87 | }; |
88 | static uint8_t target_to_host_signal_table[65]; | |
89 | ||
a04e134a TS |
90 | static inline int on_sig_stack(unsigned long sp) |
91 | { | |
92 | return (sp - target_sigaltstack_used.ss_sp | |
93 | < target_sigaltstack_used.ss_size); | |
94 | } | |
95 | ||
96 | static inline int sas_ss_flags(unsigned long sp) | |
97 | { | |
98 | return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE | |
99 | : on_sig_stack(sp) ? SS_ONSTACK : 0); | |
100 | } | |
101 | ||
31e31b8a FB |
102 | static inline int host_to_target_signal(int sig) |
103 | { | |
4cb05961 PB |
104 | if (sig > 64) |
105 | return sig; | |
9e5f5284 | 106 | return host_to_target_signal_table[sig]; |
31e31b8a FB |
107 | } |
108 | ||
4cb05961 | 109 | int target_to_host_signal(int sig) |
31e31b8a | 110 | { |
4cb05961 PB |
111 | if (sig > 64) |
112 | return sig; | |
9e5f5284 | 113 | return target_to_host_signal_table[sig]; |
31e31b8a FB |
114 | } |
115 | ||
f5545b5c PB |
116 | static inline void target_sigemptyset(target_sigset_t *set) |
117 | { | |
118 | memset(set, 0, sizeof(*set)); | |
119 | } | |
120 | ||
121 | static inline void target_sigaddset(target_sigset_t *set, int signum) | |
122 | { | |
123 | signum--; | |
124 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
125 | set->sig[signum / TARGET_NSIG_BPW] |= mask; | |
126 | } | |
127 | ||
128 | static inline int target_sigismember(const target_sigset_t *set, int signum) | |
129 | { | |
130 | signum--; | |
131 | abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); | |
132 | return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0); | |
133 | } | |
134 | ||
5fafdf24 | 135 | static void host_to_target_sigset_internal(target_sigset_t *d, |
9231944d | 136 | const sigset_t *s) |
66fb9763 FB |
137 | { |
138 | int i; | |
f5545b5c PB |
139 | target_sigemptyset(d); |
140 | for (i = 1; i <= TARGET_NSIG; i++) { | |
141 | if (sigismember(s, i)) { | |
142 | target_sigaddset(d, host_to_target_signal(i)); | |
143 | } | |
66fb9763 FB |
144 | } |
145 | } | |
146 | ||
9231944d FB |
147 | void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) |
148 | { | |
149 | target_sigset_t d1; | |
150 | int i; | |
151 | ||
152 | host_to_target_sigset_internal(&d1, s); | |
153 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
53a5960a | 154 | d->sig[i] = tswapl(d1.sig[i]); |
9231944d FB |
155 | } |
156 | ||
8fcd3692 BS |
157 | static void target_to_host_sigset_internal(sigset_t *d, |
158 | const target_sigset_t *s) | |
66fb9763 FB |
159 | { |
160 | int i; | |
f5545b5c PB |
161 | sigemptyset(d); |
162 | for (i = 1; i <= TARGET_NSIG; i++) { | |
163 | if (target_sigismember(s, i)) { | |
164 | sigaddset(d, target_to_host_signal(i)); | |
165 | } | |
166 | } | |
66fb9763 FB |
167 | } |
168 | ||
9231944d FB |
169 | void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) |
170 | { | |
171 | target_sigset_t s1; | |
172 | int i; | |
173 | ||
174 | for(i = 0;i < TARGET_NSIG_WORDS; i++) | |
53a5960a | 175 | s1.sig[i] = tswapl(s->sig[i]); |
9231944d FB |
176 | target_to_host_sigset_internal(d, &s1); |
177 | } | |
3b46e624 | 178 | |
992f48a0 | 179 | void host_to_target_old_sigset(abi_ulong *old_sigset, |
66fb9763 FB |
180 | const sigset_t *sigset) |
181 | { | |
9e5f5284 FB |
182 | target_sigset_t d; |
183 | host_to_target_sigset(&d, sigset); | |
184 | *old_sigset = d.sig[0]; | |
66fb9763 FB |
185 | } |
186 | ||
5fafdf24 | 187 | void target_to_host_old_sigset(sigset_t *sigset, |
992f48a0 | 188 | const abi_ulong *old_sigset) |
66fb9763 | 189 | { |
9e5f5284 FB |
190 | target_sigset_t d; |
191 | int i; | |
192 | ||
193 | d.sig[0] = *old_sigset; | |
194 | for(i = 1;i < TARGET_NSIG_WORDS; i++) | |
195 | d.sig[i] = 0; | |
196 | target_to_host_sigset(sigset, &d); | |
66fb9763 FB |
197 | } |
198 | ||
9de5e440 FB |
199 | /* siginfo conversion */ |
200 | ||
5fafdf24 | 201 | static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, |
9de5e440 | 202 | const siginfo_t *info) |
66fb9763 | 203 | { |
9de5e440 FB |
204 | int sig; |
205 | sig = host_to_target_signal(info->si_signo); | |
206 | tinfo->si_signo = sig; | |
207 | tinfo->si_errno = 0; | |
afd7cd92 | 208 | tinfo->si_code = info->si_code; |
5fafdf24 | 209 | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || |
447db213 | 210 | sig == SIGBUS || sig == SIGTRAP) { |
9de5e440 FB |
211 | /* should never come here, but who knows. The information for |
212 | the target is irrelevant */ | |
213 | tinfo->_sifields._sigfault._addr = 0; | |
7f7f7c84 TS |
214 | } else if (sig == SIGIO) { |
215 | tinfo->_sifields._sigpoll._fd = info->si_fd; | |
9de5e440 FB |
216 | } else if (sig >= TARGET_SIGRTMIN) { |
217 | tinfo->_sifields._rt._pid = info->si_pid; | |
218 | tinfo->_sifields._rt._uid = info->si_uid; | |
219 | /* XXX: potential problem if 64 bit */ | |
5fafdf24 | 220 | tinfo->_sifields._rt._sigval.sival_ptr = |
459a4017 | 221 | (abi_ulong)(unsigned long)info->si_value.sival_ptr; |
9de5e440 FB |
222 | } |
223 | } | |
224 | ||
5fafdf24 | 225 | static void tswap_siginfo(target_siginfo_t *tinfo, |
9de5e440 FB |
226 | const target_siginfo_t *info) |
227 | { | |
228 | int sig; | |
229 | sig = info->si_signo; | |
230 | tinfo->si_signo = tswap32(sig); | |
66fb9763 FB |
231 | tinfo->si_errno = tswap32(info->si_errno); |
232 | tinfo->si_code = tswap32(info->si_code); | |
5fafdf24 | 233 | if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || |
447db213 | 234 | sig == SIGBUS || sig == SIGTRAP) { |
5fafdf24 | 235 | tinfo->_sifields._sigfault._addr = |
9de5e440 | 236 | tswapl(info->_sifields._sigfault._addr); |
7f7f7c84 TS |
237 | } else if (sig == SIGIO) { |
238 | tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd); | |
9de5e440 FB |
239 | } else if (sig >= TARGET_SIGRTMIN) { |
240 | tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid); | |
241 | tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid); | |
5fafdf24 | 242 | tinfo->_sifields._rt._sigval.sival_ptr = |
9de5e440 FB |
243 | tswapl(info->_sifields._rt._sigval.sival_ptr); |
244 | } | |
245 | } | |
246 | ||
247 | ||
248 | void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) | |
249 | { | |
250 | host_to_target_siginfo_noswap(tinfo, info); | |
251 | tswap_siginfo(tinfo, tinfo); | |
66fb9763 FB |
252 | } |
253 | ||
9de5e440 | 254 | /* XXX: we support only POSIX RT signals are used. */ |
aa1f17c1 | 255 | /* XXX: find a solution for 64 bit (additional malloced data is needed) */ |
9de5e440 | 256 | void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo) |
66fb9763 FB |
257 | { |
258 | info->si_signo = tswap32(tinfo->si_signo); | |
259 | info->si_errno = tswap32(tinfo->si_errno); | |
260 | info->si_code = tswap32(tinfo->si_code); | |
9de5e440 FB |
261 | info->si_pid = tswap32(tinfo->_sifields._rt._pid); |
262 | info->si_uid = tswap32(tinfo->_sifields._rt._uid); | |
5fafdf24 | 263 | info->si_value.sival_ptr = |
459a4017 | 264 | (void *)(long)tswapl(tinfo->_sifields._rt._sigval.sival_ptr); |
66fb9763 FB |
265 | } |
266 | ||
31e31b8a FB |
267 | void signal_init(void) |
268 | { | |
269 | struct sigaction act; | |
624f7979 | 270 | struct sigaction oact; |
9e5f5284 | 271 | int i, j; |
624f7979 | 272 | int host_sig; |
31e31b8a | 273 | |
9e5f5284 FB |
274 | /* generate signal conversion tables */ |
275 | for(i = 1; i <= 64; i++) { | |
276 | if (host_to_target_signal_table[i] == 0) | |
277 | host_to_target_signal_table[i] = i; | |
278 | } | |
279 | for(i = 1; i <= 64; i++) { | |
280 | j = host_to_target_signal_table[i]; | |
281 | target_to_host_signal_table[j] = i; | |
282 | } | |
3b46e624 | 283 | |
9de5e440 FB |
284 | /* set all host signal handlers. ALL signals are blocked during |
285 | the handlers to serialize them. */ | |
624f7979 PB |
286 | memset(sigact_table, 0, sizeof(sigact_table)); |
287 | ||
9de5e440 | 288 | sigfillset(&act.sa_mask); |
31e31b8a FB |
289 | act.sa_flags = SA_SIGINFO; |
290 | act.sa_sigaction = host_signal_handler; | |
624f7979 PB |
291 | for(i = 1; i <= TARGET_NSIG; i++) { |
292 | host_sig = target_to_host_signal(i); | |
293 | sigaction(host_sig, NULL, &oact); | |
294 | if (oact.sa_sigaction == (void *)SIG_IGN) { | |
295 | sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN; | |
296 | } else if (oact.sa_sigaction == (void *)SIG_DFL) { | |
297 | sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL; | |
298 | } | |
299 | /* If there's already a handler installed then something has | |
300 | gone horribly wrong, so don't even try to handle that case. */ | |
301 | /* Install some handlers for our own use. */ | |
302 | if (host_sig == SIGSEGV || host_sig == SIGBUS) { | |
303 | sigaction(host_sig, &act, NULL); | |
304 | } | |
31e31b8a | 305 | } |
66fb9763 FB |
306 | } |
307 | ||
308 | /* signal queue handling */ | |
309 | ||
624f7979 | 310 | static inline struct sigqueue *alloc_sigqueue(CPUState *env) |
66fb9763 | 311 | { |
624f7979 PB |
312 | TaskState *ts = env->opaque; |
313 | struct sigqueue *q = ts->first_free; | |
66fb9763 FB |
314 | if (!q) |
315 | return NULL; | |
624f7979 | 316 | ts->first_free = q->next; |
66fb9763 | 317 | return q; |
31e31b8a FB |
318 | } |
319 | ||
624f7979 | 320 | static inline void free_sigqueue(CPUState *env, struct sigqueue *q) |
66fb9763 | 321 | { |
624f7979 PB |
322 | TaskState *ts = env->opaque; |
323 | q->next = ts->first_free; | |
324 | ts->first_free = q; | |
66fb9763 FB |
325 | } |
326 | ||
9de5e440 | 327 | /* abort execution with signal */ |
8fcd3692 | 328 | static void __attribute((noreturn)) force_sig(int sig) |
66fb9763 FB |
329 | { |
330 | int host_sig; | |
66fb9763 | 331 | host_sig = target_to_host_signal(sig); |
5fafdf24 | 332 | fprintf(stderr, "qemu: uncaught target signal %d (%s) - exiting\n", |
66fb9763 | 333 | sig, strsignal(host_sig)); |
9de5e440 | 334 | #if 1 |
66fb9763 | 335 | _exit(-host_sig); |
9de5e440 FB |
336 | #else |
337 | { | |
338 | struct sigaction act; | |
339 | sigemptyset(&act.sa_mask); | |
340 | act.sa_flags = SA_SIGINFO; | |
341 | act.sa_sigaction = SIG_DFL; | |
342 | sigaction(SIGABRT, &act, NULL); | |
343 | abort(); | |
344 | } | |
345 | #endif | |
66fb9763 FB |
346 | } |
347 | ||
9de5e440 FB |
348 | /* queue a signal so that it will be send to the virtual CPU as soon |
349 | as possible */ | |
624f7979 | 350 | int queue_signal(CPUState *env, int sig, target_siginfo_t *info) |
31e31b8a | 351 | { |
624f7979 PB |
352 | TaskState *ts = env->opaque; |
353 | struct emulated_sigtable *k; | |
9de5e440 | 354 | struct sigqueue *q, **pq; |
992f48a0 | 355 | abi_ulong handler; |
66fb9763 | 356 | |
9de5e440 | 357 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 358 | fprintf(stderr, "queue_signal: sig=%d\n", |
9de5e440 | 359 | sig); |
66fb9763 | 360 | #endif |
624f7979 PB |
361 | k = &ts->sigtab[sig - 1]; |
362 | handler = sigact_table[sig - 1]._sa_handler; | |
66fb9763 FB |
363 | if (handler == TARGET_SIG_DFL) { |
364 | /* default handler : ignore some signal. The other are fatal */ | |
5fafdf24 TS |
365 | if (sig != TARGET_SIGCHLD && |
366 | sig != TARGET_SIGURG && | |
66fb9763 FB |
367 | sig != TARGET_SIGWINCH) { |
368 | force_sig(sig); | |
9de5e440 FB |
369 | } else { |
370 | return 0; /* indicate ignored */ | |
66fb9763 FB |
371 | } |
372 | } else if (handler == TARGET_SIG_IGN) { | |
373 | /* ignore signal */ | |
9de5e440 | 374 | return 0; |
66fb9763 FB |
375 | } else if (handler == TARGET_SIG_ERR) { |
376 | force_sig(sig); | |
377 | } else { | |
9de5e440 FB |
378 | pq = &k->first; |
379 | if (sig < TARGET_SIGRTMIN) { | |
380 | /* if non real time signal, we queue exactly one signal */ | |
381 | if (!k->pending) | |
382 | q = &k->info; | |
383 | else | |
384 | return 0; | |
385 | } else { | |
386 | if (!k->pending) { | |
387 | /* first signal */ | |
388 | q = &k->info; | |
389 | } else { | |
624f7979 | 390 | q = alloc_sigqueue(env); |
9de5e440 FB |
391 | if (!q) |
392 | return -EAGAIN; | |
393 | while (*pq != NULL) | |
394 | pq = &(*pq)->next; | |
395 | } | |
396 | } | |
397 | *pq = q; | |
398 | q->info = *info; | |
399 | q->next = NULL; | |
400 | k->pending = 1; | |
401 | /* signal that a new signal is pending */ | |
624f7979 | 402 | ts->signal_pending = 1; |
9de5e440 FB |
403 | return 1; /* indicates that the signal was queued */ |
404 | } | |
405 | } | |
406 | ||
5fafdf24 | 407 | static void host_signal_handler(int host_signum, siginfo_t *info, |
9de5e440 FB |
408 | void *puc) |
409 | { | |
410 | int sig; | |
411 | target_siginfo_t tinfo; | |
412 | ||
413 | /* the CPU emulator uses some host signals to detect exceptions, | |
414 | we we forward to it some signals */ | |
ec6338ba | 415 | if (host_signum == SIGSEGV || host_signum == SIGBUS) { |
b346ff46 | 416 | if (cpu_signal_handler(host_signum, info, puc)) |
9de5e440 FB |
417 | return; |
418 | } | |
419 | ||
420 | /* get target signal number */ | |
421 | sig = host_to_target_signal(host_signum); | |
422 | if (sig < 1 || sig > TARGET_NSIG) | |
423 | return; | |
424 | #if defined(DEBUG_SIGNAL) | |
bc8a22cc | 425 | fprintf(stderr, "qemu: got signal %d\n", sig); |
9de5e440 FB |
426 | #endif |
427 | host_to_target_siginfo_noswap(&tinfo, info); | |
d5975363 | 428 | if (queue_signal(thread_env, sig, &tinfo) == 1) { |
9de5e440 | 429 | /* interrupt the virtual CPU as soon as possible */ |
d5975363 | 430 | cpu_interrupt(thread_env, CPU_INTERRUPT_EXIT); |
66fb9763 FB |
431 | } |
432 | } | |
433 | ||
0da46a6e | 434 | /* do_sigaltstack() returns target values and errnos. */ |
579a97f7 FB |
435 | /* compare linux/kernel/signal.c:do_sigaltstack() */ |
436 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) | |
a04e134a TS |
437 | { |
438 | int ret; | |
439 | struct target_sigaltstack oss; | |
440 | ||
441 | /* XXX: test errors */ | |
579a97f7 | 442 | if(uoss_addr) |
a04e134a TS |
443 | { |
444 | __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp); | |
445 | __put_user(target_sigaltstack_used.ss_size, &oss.ss_size); | |
446 | __put_user(sas_ss_flags(sp), &oss.ss_flags); | |
447 | } | |
448 | ||
579a97f7 | 449 | if(uss_addr) |
a04e134a | 450 | { |
579a97f7 FB |
451 | struct target_sigaltstack *uss; |
452 | struct target_sigaltstack ss; | |
a04e134a | 453 | |
0da46a6e | 454 | ret = -TARGET_EFAULT; |
579a97f7 | 455 | if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1) |
a04e134a TS |
456 | || __get_user(ss.ss_sp, &uss->ss_sp) |
457 | || __get_user(ss.ss_size, &uss->ss_size) | |
458 | || __get_user(ss.ss_flags, &uss->ss_flags)) | |
459 | goto out; | |
579a97f7 | 460 | unlock_user_struct(uss, uss_addr, 0); |
a04e134a | 461 | |
0da46a6e | 462 | ret = -TARGET_EPERM; |
a04e134a TS |
463 | if (on_sig_stack(sp)) |
464 | goto out; | |
465 | ||
0da46a6e | 466 | ret = -TARGET_EINVAL; |
a04e134a TS |
467 | if (ss.ss_flags != TARGET_SS_DISABLE |
468 | && ss.ss_flags != TARGET_SS_ONSTACK | |
469 | && ss.ss_flags != 0) | |
470 | goto out; | |
471 | ||
472 | if (ss.ss_flags == TARGET_SS_DISABLE) { | |
473 | ss.ss_size = 0; | |
474 | ss.ss_sp = 0; | |
475 | } else { | |
0da46a6e | 476 | ret = -TARGET_ENOMEM; |
a04e134a TS |
477 | if (ss.ss_size < MINSIGSTKSZ) |
478 | goto out; | |
479 | } | |
480 | ||
481 | target_sigaltstack_used.ss_sp = ss.ss_sp; | |
482 | target_sigaltstack_used.ss_size = ss.ss_size; | |
483 | } | |
484 | ||
579a97f7 | 485 | if (uoss_addr) { |
0da46a6e | 486 | ret = -TARGET_EFAULT; |
579a97f7 | 487 | if (copy_to_user(uoss_addr, &oss, sizeof(oss))) |
a04e134a | 488 | goto out; |
a04e134a TS |
489 | } |
490 | ||
491 | ret = 0; | |
492 | out: | |
493 | return ret; | |
494 | } | |
495 | ||
0da46a6e | 496 | /* do_sigaction() return host values and errnos */ |
66fb9763 FB |
497 | int do_sigaction(int sig, const struct target_sigaction *act, |
498 | struct target_sigaction *oact) | |
499 | { | |
624f7979 | 500 | struct target_sigaction *k; |
773b93ee FB |
501 | struct sigaction act1; |
502 | int host_sig; | |
0da46a6e | 503 | int ret = 0; |
66fb9763 | 504 | |
0aeaa8ce | 505 | if (sig < 1 || sig > TARGET_NSIG || sig == SIGKILL || sig == SIGSTOP) |
66fb9763 FB |
506 | return -EINVAL; |
507 | k = &sigact_table[sig - 1]; | |
773b93ee | 508 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 509 | fprintf(stderr, "sigaction sig=%d act=0x%08x, oact=0x%08x\n", |
66fb9763 FB |
510 | sig, (int)act, (int)oact); |
511 | #endif | |
512 | if (oact) { | |
624f7979 PB |
513 | oact->_sa_handler = tswapl(k->_sa_handler); |
514 | oact->sa_flags = tswapl(k->sa_flags); | |
388bb21a | 515 | #if !defined(TARGET_MIPS) |
624f7979 | 516 | oact->sa_restorer = tswapl(k->sa_restorer); |
388bb21a | 517 | #endif |
624f7979 | 518 | oact->sa_mask = k->sa_mask; |
66fb9763 FB |
519 | } |
520 | if (act) { | |
624f7979 PB |
521 | /* FIXME: This is not threadsafe. */ |
522 | k->_sa_handler = tswapl(act->_sa_handler); | |
523 | k->sa_flags = tswapl(act->sa_flags); | |
388bb21a | 524 | #if !defined(TARGET_MIPS) |
624f7979 | 525 | k->sa_restorer = tswapl(act->sa_restorer); |
388bb21a | 526 | #endif |
624f7979 | 527 | k->sa_mask = act->sa_mask; |
773b93ee FB |
528 | |
529 | /* we update the host linux signal state */ | |
530 | host_sig = target_to_host_signal(sig); | |
531 | if (host_sig != SIGSEGV && host_sig != SIGBUS) { | |
532 | sigfillset(&act1.sa_mask); | |
533 | act1.sa_flags = SA_SIGINFO; | |
624f7979 | 534 | if (k->sa_flags & TARGET_SA_RESTART) |
773b93ee FB |
535 | act1.sa_flags |= SA_RESTART; |
536 | /* NOTE: it is important to update the host kernel signal | |
537 | ignore state to avoid getting unexpected interrupted | |
538 | syscalls */ | |
624f7979 | 539 | if (k->_sa_handler == TARGET_SIG_IGN) { |
773b93ee | 540 | act1.sa_sigaction = (void *)SIG_IGN; |
624f7979 | 541 | } else if (k->_sa_handler == TARGET_SIG_DFL) { |
773b93ee FB |
542 | act1.sa_sigaction = (void *)SIG_DFL; |
543 | } else { | |
544 | act1.sa_sigaction = host_signal_handler; | |
545 | } | |
0da46a6e | 546 | ret = sigaction(host_sig, &act1, NULL); |
773b93ee | 547 | } |
66fb9763 | 548 | } |
0da46a6e | 549 | return ret; |
66fb9763 FB |
550 | } |
551 | ||
43fff238 FB |
552 | #ifndef offsetof |
553 | #define offsetof(type, field) ((size_t) &((type *)0)->field) | |
554 | #endif | |
555 | ||
5fafdf24 | 556 | static inline int copy_siginfo_to_user(target_siginfo_t *tinfo, |
43fff238 FB |
557 | const target_siginfo_t *info) |
558 | { | |
559 | tswap_siginfo(tinfo, info); | |
560 | return 0; | |
561 | } | |
562 | ||
c3b5bc8a TS |
563 | static inline int current_exec_domain_sig(int sig) |
564 | { | |
565 | return /* current->exec_domain && current->exec_domain->signal_invmap | |
566 | && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig; | |
567 | } | |
568 | ||
459a4017 | 569 | #if defined(TARGET_I386) && TARGET_ABI_BITS == 32 |
66fb9763 FB |
570 | |
571 | /* from the Linux kernel */ | |
572 | ||
573 | struct target_fpreg { | |
574 | uint16_t significand[4]; | |
575 | uint16_t exponent; | |
576 | }; | |
577 | ||
578 | struct target_fpxreg { | |
579 | uint16_t significand[4]; | |
580 | uint16_t exponent; | |
581 | uint16_t padding[3]; | |
582 | }; | |
583 | ||
584 | struct target_xmmreg { | |
992f48a0 | 585 | abi_ulong element[4]; |
66fb9763 FB |
586 | }; |
587 | ||
588 | struct target_fpstate { | |
589 | /* Regular FPU environment */ | |
992f48a0 BS |
590 | abi_ulong cw; |
591 | abi_ulong sw; | |
592 | abi_ulong tag; | |
593 | abi_ulong ipoff; | |
594 | abi_ulong cssel; | |
595 | abi_ulong dataoff; | |
596 | abi_ulong datasel; | |
66fb9763 FB |
597 | struct target_fpreg _st[8]; |
598 | uint16_t status; | |
599 | uint16_t magic; /* 0xffff = regular FPU data only */ | |
600 | ||
601 | /* FXSR FPU environment */ | |
992f48a0 BS |
602 | abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */ |
603 | abi_ulong mxcsr; | |
604 | abi_ulong reserved; | |
66fb9763 FB |
605 | struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ |
606 | struct target_xmmreg _xmm[8]; | |
992f48a0 | 607 | abi_ulong padding[56]; |
66fb9763 FB |
608 | }; |
609 | ||
610 | #define X86_FXSR_MAGIC 0x0000 | |
611 | ||
612 | struct target_sigcontext { | |
613 | uint16_t gs, __gsh; | |
614 | uint16_t fs, __fsh; | |
615 | uint16_t es, __esh; | |
616 | uint16_t ds, __dsh; | |
992f48a0 BS |
617 | abi_ulong edi; |
618 | abi_ulong esi; | |
619 | abi_ulong ebp; | |
620 | abi_ulong esp; | |
621 | abi_ulong ebx; | |
622 | abi_ulong edx; | |
623 | abi_ulong ecx; | |
624 | abi_ulong eax; | |
625 | abi_ulong trapno; | |
626 | abi_ulong err; | |
627 | abi_ulong eip; | |
66fb9763 | 628 | uint16_t cs, __csh; |
992f48a0 BS |
629 | abi_ulong eflags; |
630 | abi_ulong esp_at_signal; | |
66fb9763 | 631 | uint16_t ss, __ssh; |
992f48a0 BS |
632 | abi_ulong fpstate; /* pointer */ |
633 | abi_ulong oldmask; | |
634 | abi_ulong cr2; | |
66fb9763 FB |
635 | }; |
636 | ||
66fb9763 | 637 | struct target_ucontext { |
992f48a0 BS |
638 | abi_ulong tuc_flags; |
639 | abi_ulong tuc_link; | |
b8076a74 FB |
640 | target_stack_t tuc_stack; |
641 | struct target_sigcontext tuc_mcontext; | |
642 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
66fb9763 FB |
643 | }; |
644 | ||
645 | struct sigframe | |
646 | { | |
992f48a0 | 647 | abi_ulong pretcode; |
66fb9763 FB |
648 | int sig; |
649 | struct target_sigcontext sc; | |
650 | struct target_fpstate fpstate; | |
992f48a0 | 651 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
66fb9763 FB |
652 | char retcode[8]; |
653 | }; | |
654 | ||
655 | struct rt_sigframe | |
656 | { | |
992f48a0 | 657 | abi_ulong pretcode; |
66fb9763 | 658 | int sig; |
992f48a0 BS |
659 | abi_ulong pinfo; |
660 | abi_ulong puc; | |
66fb9763 FB |
661 | struct target_siginfo info; |
662 | struct target_ucontext uc; | |
663 | struct target_fpstate fpstate; | |
664 | char retcode[8]; | |
665 | }; | |
666 | ||
667 | /* | |
668 | * Set up a signal frame. | |
669 | */ | |
670 | ||
66fb9763 FB |
671 | /* XXX: save x87 state */ |
672 | static int | |
673 | setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate, | |
28be6234 | 674 | CPUX86State *env, abi_ulong mask, abi_ulong fpstate_addr) |
66fb9763 FB |
675 | { |
676 | int err = 0; | |
775b58d8 | 677 | uint16_t magic; |
66fb9763 | 678 | |
579a97f7 | 679 | /* already locked in setup_frame() */ |
a52c757c FB |
680 | err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); |
681 | err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); | |
682 | err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); | |
683 | err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); | |
66fb9763 FB |
684 | err |= __put_user(env->regs[R_EDI], &sc->edi); |
685 | err |= __put_user(env->regs[R_ESI], &sc->esi); | |
686 | err |= __put_user(env->regs[R_EBP], &sc->ebp); | |
687 | err |= __put_user(env->regs[R_ESP], &sc->esp); | |
688 | err |= __put_user(env->regs[R_EBX], &sc->ebx); | |
689 | err |= __put_user(env->regs[R_EDX], &sc->edx); | |
690 | err |= __put_user(env->regs[R_ECX], &sc->ecx); | |
691 | err |= __put_user(env->regs[R_EAX], &sc->eax); | |
66099dd9 FB |
692 | err |= __put_user(env->exception_index, &sc->trapno); |
693 | err |= __put_user(env->error_code, &sc->err); | |
66fb9763 | 694 | err |= __put_user(env->eip, &sc->eip); |
a52c757c | 695 | err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); |
66fb9763 FB |
696 | err |= __put_user(env->eflags, &sc->eflags); |
697 | err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal); | |
a52c757c | 698 | err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); |
ed2dcdf6 | 699 | |
28be6234 | 700 | cpu_x86_fsave(env, fpstate_addr, 1); |
ed2dcdf6 | 701 | fpstate->status = fpstate->sw; |
775b58d8 FB |
702 | magic = 0xffff; |
703 | err |= __put_user(magic, &fpstate->magic); | |
28be6234 | 704 | err |= __put_user(fpstate_addr, &sc->fpstate); |
ed2dcdf6 | 705 | |
66fb9763 FB |
706 | /* non-iBCS2 extensions.. */ |
707 | err |= __put_user(mask, &sc->oldmask); | |
a52c757c | 708 | err |= __put_user(env->cr[2], &sc->cr2); |
66fb9763 | 709 | return err; |
31e31b8a FB |
710 | } |
711 | ||
66fb9763 FB |
712 | /* |
713 | * Determine which stack to use.. | |
714 | */ | |
31e31b8a | 715 | |
579a97f7 | 716 | static inline abi_ulong |
624f7979 | 717 | get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size) |
31e31b8a | 718 | { |
66fb9763 FB |
719 | unsigned long esp; |
720 | ||
721 | /* Default to using normal stack */ | |
722 | esp = env->regs[R_ESP]; | |
66fb9763 | 723 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 724 | if (ka->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
725 | if (sas_ss_flags(esp) == 0) |
726 | esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
727 | } | |
66fb9763 FB |
728 | |
729 | /* This is the legacy signal stack switching. */ | |
5fafdf24 | 730 | else |
a52c757c | 731 | if ((env->segs[R_SS].selector & 0xffff) != __USER_DS && |
624f7979 PB |
732 | !(ka->sa_flags & TARGET_SA_RESTORER) && |
733 | ka->sa_restorer) { | |
734 | esp = (unsigned long) ka->sa_restorer; | |
a52c757c | 735 | } |
579a97f7 | 736 | return (esp - frame_size) & -8ul; |
66fb9763 FB |
737 | } |
738 | ||
579a97f7 | 739 | /* compare linux/arch/i386/kernel/signal.c:setup_frame() */ |
624f7979 | 740 | static void setup_frame(int sig, struct target_sigaction *ka, |
66fb9763 FB |
741 | target_sigset_t *set, CPUX86State *env) |
742 | { | |
579a97f7 | 743 | abi_ulong frame_addr; |
66fb9763 | 744 | struct sigframe *frame; |
9231944d | 745 | int i, err = 0; |
66fb9763 | 746 | |
579a97f7 | 747 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 748 | |
579a97f7 | 749 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 750 | goto give_sigsegv; |
579a97f7 | 751 | |
c3b5bc8a | 752 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 FB |
753 | &frame->sig); |
754 | if (err) | |
755 | goto give_sigsegv; | |
756 | ||
28be6234 FB |
757 | setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], |
758 | frame_addr + offsetof(struct sigframe, fpstate)); | |
66fb9763 FB |
759 | if (err) |
760 | goto give_sigsegv; | |
761 | ||
9231944d FB |
762 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
763 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
764 | goto give_sigsegv; | |
765 | } | |
66fb9763 FB |
766 | |
767 | /* Set up to return from userspace. If provided, use a stub | |
768 | already in userspace. */ | |
624f7979 PB |
769 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
770 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 771 | } else { |
775b58d8 | 772 | uint16_t val16; |
28be6234 FB |
773 | abi_ulong retcode_addr; |
774 | retcode_addr = frame_addr + offsetof(struct sigframe, retcode); | |
775 | err |= __put_user(retcode_addr, &frame->pretcode); | |
66fb9763 | 776 | /* This is popl %eax ; movl $,%eax ; int $0x80 */ |
775b58d8 FB |
777 | val16 = 0xb858; |
778 | err |= __put_user(val16, (uint16_t *)(frame->retcode+0)); | |
66fb9763 | 779 | err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2)); |
775b58d8 FB |
780 | val16 = 0x80cd; |
781 | err |= __put_user(val16, (uint16_t *)(frame->retcode+6)); | |
66fb9763 FB |
782 | } |
783 | ||
784 | if (err) | |
785 | goto give_sigsegv; | |
786 | ||
787 | /* Set up registers for signal handler */ | |
28be6234 | 788 | env->regs[R_ESP] = frame_addr; |
624f7979 | 789 | env->eip = ka->_sa_handler; |
66fb9763 FB |
790 | |
791 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
792 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
793 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
794 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
795 | env->eflags &= ~TF_MASK; | |
796 | ||
579a97f7 FB |
797 | unlock_user_struct(frame, frame_addr, 1); |
798 | ||
66fb9763 FB |
799 | return; |
800 | ||
801 | give_sigsegv: | |
579a97f7 | 802 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 803 | if (sig == TARGET_SIGSEGV) |
624f7979 | 804 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
805 | force_sig(TARGET_SIGSEGV /* , current */); |
806 | } | |
807 | ||
579a97f7 | 808 | /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 809 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
9de5e440 | 810 | target_siginfo_t *info, |
66fb9763 FB |
811 | target_sigset_t *set, CPUX86State *env) |
812 | { | |
28be6234 | 813 | abi_ulong frame_addr, addr; |
66fb9763 | 814 | struct rt_sigframe *frame; |
9231944d | 815 | int i, err = 0; |
66fb9763 | 816 | |
579a97f7 | 817 | frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
66fb9763 | 818 | |
579a97f7 | 819 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
66fb9763 | 820 | goto give_sigsegv; |
66fb9763 | 821 | |
c3b5bc8a | 822 | err |= __put_user(current_exec_domain_sig(sig), |
66fb9763 | 823 | &frame->sig); |
28be6234 FB |
824 | addr = frame_addr + offsetof(struct rt_sigframe, info); |
825 | err |= __put_user(addr, &frame->pinfo); | |
826 | addr = frame_addr + offsetof(struct rt_sigframe, uc); | |
827 | err |= __put_user(addr, &frame->puc); | |
66fb9763 FB |
828 | err |= copy_siginfo_to_user(&frame->info, info); |
829 | if (err) | |
830 | goto give_sigsegv; | |
31e31b8a | 831 | |
66fb9763 | 832 | /* Create the ucontext. */ |
b8076a74 FB |
833 | err |= __put_user(0, &frame->uc.tuc_flags); |
834 | err |= __put_user(0, &frame->uc.tuc_link); | |
a04e134a | 835 | err |= __put_user(target_sigaltstack_used.ss_sp, |
b8076a74 | 836 | &frame->uc.tuc_stack.ss_sp); |
a04e134a | 837 | err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)), |
b8076a74 | 838 | &frame->uc.tuc_stack.ss_flags); |
a04e134a | 839 | err |= __put_user(target_sigaltstack_used.ss_size, |
b8076a74 FB |
840 | &frame->uc.tuc_stack.ss_size); |
841 | err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, | |
28be6234 FB |
842 | env, set->sig[0], |
843 | frame_addr + offsetof(struct rt_sigframe, fpstate)); | |
9231944d | 844 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 845 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
9231944d FB |
846 | goto give_sigsegv; |
847 | } | |
31e31b8a | 848 | |
66fb9763 FB |
849 | /* Set up to return from userspace. If provided, use a stub |
850 | already in userspace. */ | |
624f7979 PB |
851 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
852 | err |= __put_user(ka->sa_restorer, &frame->pretcode); | |
66fb9763 | 853 | } else { |
775b58d8 | 854 | uint16_t val16; |
28be6234 FB |
855 | addr = frame_addr + offsetof(struct rt_sigframe, retcode); |
856 | err |= __put_user(addr, &frame->pretcode); | |
66fb9763 | 857 | /* This is movl $,%eax ; int $0x80 */ |
775b58d8 | 858 | err |= __put_user(0xb8, (char *)(frame->retcode+0)); |
66fb9763 | 859 | err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1)); |
775b58d8 FB |
860 | val16 = 0x80cd; |
861 | err |= __put_user(val16, (uint16_t *)(frame->retcode+5)); | |
66fb9763 FB |
862 | } |
863 | ||
864 | if (err) | |
865 | goto give_sigsegv; | |
866 | ||
867 | /* Set up registers for signal handler */ | |
28be6234 | 868 | env->regs[R_ESP] = frame_addr; |
624f7979 | 869 | env->eip = ka->_sa_handler; |
66fb9763 FB |
870 | |
871 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
872 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
873 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
874 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
875 | env->eflags &= ~TF_MASK; | |
876 | ||
579a97f7 FB |
877 | unlock_user_struct(frame, frame_addr, 1); |
878 | ||
66fb9763 FB |
879 | return; |
880 | ||
881 | give_sigsegv: | |
579a97f7 | 882 | unlock_user_struct(frame, frame_addr, 1); |
66fb9763 | 883 | if (sig == TARGET_SIGSEGV) |
624f7979 | 884 | ka->_sa_handler = TARGET_SIG_DFL; |
66fb9763 FB |
885 | force_sig(TARGET_SIGSEGV /* , current */); |
886 | } | |
887 | ||
888 | static int | |
889 | restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax) | |
890 | { | |
891 | unsigned int err = 0; | |
28be6234 FB |
892 | abi_ulong fpstate_addr; |
893 | unsigned int tmpflags; | |
894 | ||
895 | cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); | |
896 | cpu_x86_load_seg(env, R_FS, tswap16(sc->fs)); | |
897 | cpu_x86_load_seg(env, R_ES, tswap16(sc->es)); | |
898 | cpu_x86_load_seg(env, R_DS, tswap16(sc->ds)); | |
899 | ||
900 | env->regs[R_EDI] = tswapl(sc->edi); | |
901 | env->regs[R_ESI] = tswapl(sc->esi); | |
902 | env->regs[R_EBP] = tswapl(sc->ebp); | |
903 | env->regs[R_ESP] = tswapl(sc->esp); | |
904 | env->regs[R_EBX] = tswapl(sc->ebx); | |
905 | env->regs[R_EDX] = tswapl(sc->edx); | |
906 | env->regs[R_ECX] = tswapl(sc->ecx); | |
907 | env->eip = tswapl(sc->eip); | |
66fb9763 FB |
908 | |
909 | cpu_x86_load_seg(env, R_CS, lduw(&sc->cs) | 3); | |
910 | cpu_x86_load_seg(env, R_SS, lduw(&sc->ss) | 3); | |
5fafdf24 | 911 | |
28be6234 FB |
912 | tmpflags = tswapl(sc->eflags); |
913 | env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); | |
914 | // regs->orig_eax = -1; /* disable syscall checks */ | |
66fb9763 | 915 | |
28be6234 FB |
916 | fpstate_addr = tswapl(sc->fpstate); |
917 | if (fpstate_addr != 0) { | |
918 | if (!access_ok(VERIFY_READ, fpstate_addr, | |
919 | sizeof(struct target_fpstate))) | |
920 | goto badframe; | |
921 | cpu_x86_frstor(env, fpstate_addr, 1); | |
66fb9763 | 922 | } |
ed2dcdf6 | 923 | |
28be6234 | 924 | *peax = tswapl(sc->eax); |
66fb9763 | 925 | return err; |
66fb9763 FB |
926 | badframe: |
927 | return 1; | |
66fb9763 FB |
928 | } |
929 | ||
930 | long do_sigreturn(CPUX86State *env) | |
931 | { | |
579a97f7 FB |
932 | struct sigframe *frame; |
933 | abi_ulong frame_addr = env->regs[R_ESP] - 8; | |
66fb9763 FB |
934 | target_sigset_t target_set; |
935 | sigset_t set; | |
936 | int eax, i; | |
937 | ||
447db213 FB |
938 | #if defined(DEBUG_SIGNAL) |
939 | fprintf(stderr, "do_sigreturn\n"); | |
940 | #endif | |
579a97f7 FB |
941 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
942 | goto badframe; | |
66fb9763 | 943 | /* set blocked signals */ |
9231944d FB |
944 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) |
945 | goto badframe; | |
946 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
947 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
948 | goto badframe; | |
949 | } | |
66fb9763 | 950 | |
9231944d | 951 | target_to_host_sigset_internal(&set, &target_set); |
66fb9763 | 952 | sigprocmask(SIG_SETMASK, &set, NULL); |
3b46e624 | 953 | |
66fb9763 FB |
954 | /* restore registers */ |
955 | if (restore_sigcontext(env, &frame->sc, &eax)) | |
956 | goto badframe; | |
579a97f7 | 957 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
958 | return eax; |
959 | ||
960 | badframe: | |
579a97f7 | 961 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
962 | force_sig(TARGET_SIGSEGV); |
963 | return 0; | |
964 | } | |
965 | ||
966 | long do_rt_sigreturn(CPUX86State *env) | |
967 | { | |
28be6234 FB |
968 | abi_ulong frame_addr; |
969 | struct rt_sigframe *frame; | |
66fb9763 | 970 | sigset_t set; |
66fb9763 FB |
971 | int eax; |
972 | ||
28be6234 FB |
973 | frame_addr = env->regs[R_ESP] - 4; |
974 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
975 | goto badframe; | |
b8076a74 | 976 | target_to_host_sigset(&set, &frame->uc.tuc_sigmask); |
66fb9763 | 977 | sigprocmask(SIG_SETMASK, &set, NULL); |
5fafdf24 | 978 | |
b8076a74 | 979 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax)) |
66fb9763 FB |
980 | goto badframe; |
981 | ||
28be6234 FB |
982 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0, |
983 | get_sp_from_cpustate(env)) == -EFAULT) | |
66fb9763 | 984 | goto badframe; |
a04e134a | 985 | |
28be6234 | 986 | unlock_user_struct(frame, frame_addr, 0); |
66fb9763 FB |
987 | return eax; |
988 | ||
989 | badframe: | |
28be6234 FB |
990 | unlock_user_struct(frame, frame_addr, 0); |
991 | force_sig(TARGET_SIGSEGV); | |
66fb9763 FB |
992 | return 0; |
993 | } | |
994 | ||
43fff238 FB |
995 | #elif defined(TARGET_ARM) |
996 | ||
997 | struct target_sigcontext { | |
992f48a0 BS |
998 | abi_ulong trap_no; |
999 | abi_ulong error_code; | |
1000 | abi_ulong oldmask; | |
1001 | abi_ulong arm_r0; | |
1002 | abi_ulong arm_r1; | |
1003 | abi_ulong arm_r2; | |
1004 | abi_ulong arm_r3; | |
1005 | abi_ulong arm_r4; | |
1006 | abi_ulong arm_r5; | |
1007 | abi_ulong arm_r6; | |
1008 | abi_ulong arm_r7; | |
1009 | abi_ulong arm_r8; | |
1010 | abi_ulong arm_r9; | |
1011 | abi_ulong arm_r10; | |
1012 | abi_ulong arm_fp; | |
1013 | abi_ulong arm_ip; | |
1014 | abi_ulong arm_sp; | |
1015 | abi_ulong arm_lr; | |
1016 | abi_ulong arm_pc; | |
1017 | abi_ulong arm_cpsr; | |
1018 | abi_ulong fault_address; | |
43fff238 FB |
1019 | }; |
1020 | ||
a745ec6d PB |
1021 | struct target_ucontext_v1 { |
1022 | abi_ulong tuc_flags; | |
1023 | abi_ulong tuc_link; | |
1024 | target_stack_t tuc_stack; | |
1025 | struct target_sigcontext tuc_mcontext; | |
1026 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
1027 | }; | |
1028 | ||
1029 | struct target_ucontext_v2 { | |
992f48a0 BS |
1030 | abi_ulong tuc_flags; |
1031 | abi_ulong tuc_link; | |
b8076a74 FB |
1032 | target_stack_t tuc_stack; |
1033 | struct target_sigcontext tuc_mcontext; | |
1034 | target_sigset_t tuc_sigmask; /* mask last for extensibility */ | |
a745ec6d PB |
1035 | char __unused[128 - sizeof(sigset_t)]; |
1036 | abi_ulong tuc_regspace[128] __attribute__((__aligned__(8))); | |
43fff238 FB |
1037 | }; |
1038 | ||
a8c33204 | 1039 | struct sigframe_v1 |
43fff238 FB |
1040 | { |
1041 | struct target_sigcontext sc; | |
992f48a0 BS |
1042 | abi_ulong extramask[TARGET_NSIG_WORDS-1]; |
1043 | abi_ulong retcode; | |
43fff238 FB |
1044 | }; |
1045 | ||
a8c33204 PB |
1046 | struct sigframe_v2 |
1047 | { | |
1048 | struct target_ucontext_v2 uc; | |
1049 | abi_ulong retcode; | |
1050 | }; | |
1051 | ||
a745ec6d | 1052 | struct rt_sigframe_v1 |
43fff238 | 1053 | { |
f8b0aa25 FB |
1054 | abi_ulong pinfo; |
1055 | abi_ulong puc; | |
43fff238 | 1056 | struct target_siginfo info; |
a745ec6d PB |
1057 | struct target_ucontext_v1 uc; |
1058 | abi_ulong retcode; | |
1059 | }; | |
1060 | ||
1061 | struct rt_sigframe_v2 | |
1062 | { | |
1063 | struct target_siginfo info; | |
1064 | struct target_ucontext_v2 uc; | |
992f48a0 | 1065 | abi_ulong retcode; |
43fff238 FB |
1066 | }; |
1067 | ||
1068 | #define TARGET_CONFIG_CPU_32 1 | |
1069 | ||
1070 | /* | |
1071 | * For ARM syscalls, we encode the syscall number into the instruction. | |
1072 | */ | |
1073 | #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE)) | |
1074 | #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE)) | |
1075 | ||
1076 | /* | |
1077 | * For Thumb syscalls, we pass the syscall number via r7. We therefore | |
1078 | * need two 16-bit instructions. | |
1079 | */ | |
1080 | #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn)) | |
1081 | #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn)) | |
1082 | ||
992f48a0 | 1083 | static const abi_ulong retcodes[4] = { |
43fff238 FB |
1084 | SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN, |
1085 | SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN | |
1086 | }; | |
1087 | ||
1088 | ||
43fff238 FB |
1089 | #define __get_user_error(x,p,e) __get_user(x, p) |
1090 | ||
1091 | static inline int valid_user_regs(CPUState *regs) | |
1092 | { | |
1093 | return 1; | |
1094 | } | |
1095 | ||
a8c33204 | 1096 | static void |
43fff238 | 1097 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ |
f8b0aa25 | 1098 | CPUState *env, abi_ulong mask) |
43fff238 | 1099 | { |
a8c33204 PB |
1100 | __put_user(env->regs[0], &sc->arm_r0); |
1101 | __put_user(env->regs[1], &sc->arm_r1); | |
1102 | __put_user(env->regs[2], &sc->arm_r2); | |
1103 | __put_user(env->regs[3], &sc->arm_r3); | |
1104 | __put_user(env->regs[4], &sc->arm_r4); | |
1105 | __put_user(env->regs[5], &sc->arm_r5); | |
1106 | __put_user(env->regs[6], &sc->arm_r6); | |
1107 | __put_user(env->regs[7], &sc->arm_r7); | |
1108 | __put_user(env->regs[8], &sc->arm_r8); | |
1109 | __put_user(env->regs[9], &sc->arm_r9); | |
1110 | __put_user(env->regs[10], &sc->arm_r10); | |
1111 | __put_user(env->regs[11], &sc->arm_fp); | |
1112 | __put_user(env->regs[12], &sc->arm_ip); | |
1113 | __put_user(env->regs[13], &sc->arm_sp); | |
1114 | __put_user(env->regs[14], &sc->arm_lr); | |
1115 | __put_user(env->regs[15], &sc->arm_pc); | |
43fff238 | 1116 | #ifdef TARGET_CONFIG_CPU_32 |
a8c33204 | 1117 | __put_user(cpsr_read(env), &sc->arm_cpsr); |
43fff238 FB |
1118 | #endif |
1119 | ||
a8c33204 PB |
1120 | __put_user(/* current->thread.trap_no */ 0, &sc->trap_no); |
1121 | __put_user(/* current->thread.error_code */ 0, &sc->error_code); | |
1122 | __put_user(/* current->thread.address */ 0, &sc->fault_address); | |
1123 | __put_user(mask, &sc->oldmask); | |
43fff238 FB |
1124 | } |
1125 | ||
579a97f7 | 1126 | static inline abi_ulong |
624f7979 | 1127 | get_sigframe(struct target_sigaction *ka, CPUState *regs, int framesize) |
43fff238 FB |
1128 | { |
1129 | unsigned long sp = regs->regs[13]; | |
1130 | ||
43fff238 FB |
1131 | /* |
1132 | * This is the X/Open sanctioned signal stack switching. | |
1133 | */ | |
624f7979 | 1134 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) |
a04e134a | 1135 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
43fff238 FB |
1136 | /* |
1137 | * ATPCS B01 mandates 8-byte alignment | |
1138 | */ | |
579a97f7 | 1139 | return (sp - framesize) & ~7; |
43fff238 FB |
1140 | } |
1141 | ||
1142 | static int | |
624f7979 | 1143 | setup_return(CPUState *env, struct target_sigaction *ka, |
f8b0aa25 | 1144 | abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr) |
43fff238 | 1145 | { |
624f7979 | 1146 | abi_ulong handler = ka->_sa_handler; |
992f48a0 | 1147 | abi_ulong retcode; |
75b680e5 | 1148 | int thumb = handler & 1; |
43fff238 | 1149 | |
624f7979 PB |
1150 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
1151 | retcode = ka->sa_restorer; | |
43fff238 FB |
1152 | } else { |
1153 | unsigned int idx = thumb; | |
1154 | ||
624f7979 | 1155 | if (ka->sa_flags & TARGET_SA_SIGINFO) |
43fff238 FB |
1156 | idx += 2; |
1157 | ||
1158 | if (__put_user(retcodes[idx], rc)) | |
1159 | return 1; | |
1160 | #if 0 | |
992f48a0 BS |
1161 | flush_icache_range((abi_ulong)rc, |
1162 | (abi_ulong)(rc + 1)); | |
43fff238 | 1163 | #endif |
f8b0aa25 | 1164 | retcode = rc_addr + thumb; |
43fff238 FB |
1165 | } |
1166 | ||
1167 | env->regs[0] = usig; | |
f8b0aa25 | 1168 | env->regs[13] = frame_addr; |
43fff238 FB |
1169 | env->regs[14] = retcode; |
1170 | env->regs[15] = handler & (thumb ? ~1 : ~3); | |
75b680e5 | 1171 | env->thumb = thumb; |
43fff238 | 1172 | |
b5ff1b31 | 1173 | #if 0 |
43fff238 FB |
1174 | #ifdef TARGET_CONFIG_CPU_32 |
1175 | env->cpsr = cpsr; | |
b5ff1b31 | 1176 | #endif |
43fff238 FB |
1177 | #endif |
1178 | ||
1179 | return 0; | |
1180 | } | |
1181 | ||
a8c33204 PB |
1182 | static void setup_sigframe_v2(struct target_ucontext_v2 *uc, |
1183 | target_sigset_t *set, CPUState *env) | |
1184 | { | |
1185 | struct target_sigaltstack stack; | |
1186 | int i; | |
1187 | ||
1188 | /* Clear all the bits of the ucontext we don't use. */ | |
1189 | memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext)); | |
1190 | ||
1191 | memset(&stack, 0, sizeof(stack)); | |
1192 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1193 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1194 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
1195 | memcpy(&uc->tuc_stack, &stack, sizeof(stack)); | |
1196 | ||
1197 | setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]); | |
1198 | /* FIXME: Save coprocessor signal frame. */ | |
1199 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
1200 | __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]); | |
1201 | } | |
1202 | } | |
1203 | ||
579a97f7 | 1204 | /* compare linux/arch/arm/kernel/signal.c:setup_frame() */ |
624f7979 | 1205 | static void setup_frame_v1(int usig, struct target_sigaction *ka, |
a8c33204 | 1206 | target_sigset_t *set, CPUState *regs) |
43fff238 | 1207 | { |
a8c33204 | 1208 | struct sigframe_v1 *frame; |
579a97f7 | 1209 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
a8c33204 | 1210 | int i; |
43fff238 | 1211 | |
579a97f7 FB |
1212 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
1213 | return; | |
1214 | ||
a8c33204 | 1215 | setup_sigcontext(&frame->sc, regs, set->sig[0]); |
43fff238 | 1216 | |
9231944d FB |
1217 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1218 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
579a97f7 | 1219 | goto end; |
43fff238 FB |
1220 | } |
1221 | ||
a8c33204 PB |
1222 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, |
1223 | frame_addr + offsetof(struct sigframe_v1, retcode)); | |
579a97f7 FB |
1224 | |
1225 | end: | |
1226 | unlock_user_struct(frame, frame_addr, 1); | |
a8c33204 PB |
1227 | } |
1228 | ||
624f7979 | 1229 | static void setup_frame_v2(int usig, struct target_sigaction *ka, |
a8c33204 PB |
1230 | target_sigset_t *set, CPUState *regs) |
1231 | { | |
1232 | struct sigframe_v2 *frame; | |
1233 | abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame)); | |
1234 | ||
1235 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1236 | return; | |
1237 | ||
1238 | setup_sigframe_v2(&frame->uc, set, regs); | |
1239 | ||
1240 | setup_return(regs, ka, &frame->retcode, frame_addr, usig, | |
1241 | frame_addr + offsetof(struct sigframe_v2, retcode)); | |
1242 | ||
1243 | unlock_user_struct(frame, frame_addr, 1); | |
1244 | } | |
1245 | ||
624f7979 | 1246 | static void setup_frame(int usig, struct target_sigaction *ka, |
a8c33204 PB |
1247 | target_sigset_t *set, CPUState *regs) |
1248 | { | |
1249 | if (get_osversion() >= 0x020612) { | |
1250 | setup_frame_v2(usig, ka, set, regs); | |
1251 | } else { | |
1252 | setup_frame_v1(usig, ka, set, regs); | |
1253 | } | |
43fff238 FB |
1254 | } |
1255 | ||
579a97f7 | 1256 | /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */ |
624f7979 | 1257 | static void setup_rt_frame_v1(int usig, struct target_sigaction *ka, |
a745ec6d PB |
1258 | target_siginfo_t *info, |
1259 | target_sigset_t *set, CPUState *env) | |
43fff238 | 1260 | { |
a745ec6d | 1261 | struct rt_sigframe_v1 *frame; |
579a97f7 | 1262 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); |
a04e134a | 1263 | struct target_sigaltstack stack; |
a8c33204 | 1264 | int i; |
f8b0aa25 | 1265 | abi_ulong info_addr, uc_addr; |
43fff238 | 1266 | |
579a97f7 | 1267 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) |
edf779ff FB |
1268 | return /* 1 */; |
1269 | ||
a745ec6d | 1270 | info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info); |
a8c33204 | 1271 | __put_user(info_addr, &frame->pinfo); |
a745ec6d | 1272 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc); |
a8c33204 PB |
1273 | __put_user(uc_addr, &frame->puc); |
1274 | copy_siginfo_to_user(&frame->info, info); | |
43fff238 FB |
1275 | |
1276 | /* Clear all the bits of the ucontext we don't use. */ | |
a745ec6d | 1277 | memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext)); |
43fff238 | 1278 | |
a04e134a TS |
1279 | memset(&stack, 0, sizeof(stack)); |
1280 | __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp); | |
1281 | __put_user(target_sigaltstack_used.ss_size, &stack.ss_size); | |
1282 | __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags); | |
775b58d8 | 1283 | memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack)); |
a04e134a | 1284 | |
a8c33204 | 1285 | setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]); |
9231944d | 1286 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
b8076a74 | 1287 | if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i])) |
579a97f7 | 1288 | goto end; |
9231944d | 1289 | } |
43fff238 | 1290 | |
a8c33204 PB |
1291 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1292 | frame_addr + offsetof(struct rt_sigframe_v1, retcode)); | |
a745ec6d | 1293 | |
a8c33204 PB |
1294 | env->regs[1] = info_addr; |
1295 | env->regs[2] = uc_addr; | |
a745ec6d PB |
1296 | |
1297 | end: | |
1298 | unlock_user_struct(frame, frame_addr, 1); | |
a745ec6d PB |
1299 | } |
1300 | ||
624f7979 | 1301 | static void setup_rt_frame_v2(int usig, struct target_sigaction *ka, |
a745ec6d PB |
1302 | target_siginfo_t *info, |
1303 | target_sigset_t *set, CPUState *env) | |
1304 | { | |
1305 | struct rt_sigframe_v2 *frame; | |
1306 | abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame)); | |
a745ec6d PB |
1307 | abi_ulong info_addr, uc_addr; |
1308 | ||
1309 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
1310 | return /* 1 */; | |
1311 | ||
1312 | info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info); | |
1313 | uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc); | |
a8c33204 | 1314 | copy_siginfo_to_user(&frame->info, info); |
a745ec6d | 1315 | |
a8c33204 | 1316 | setup_sigframe_v2(&frame->uc, set, env); |
a745ec6d | 1317 | |
a8c33204 PB |
1318 | setup_return(env, ka, &frame->retcode, frame_addr, usig, |
1319 | frame_addr + offsetof(struct rt_sigframe_v2, retcode)); | |
a745ec6d | 1320 | |
a8c33204 PB |
1321 | env->regs[1] = info_addr; |
1322 | env->regs[2] = uc_addr; | |
43fff238 | 1323 | |
579a97f7 | 1324 | unlock_user_struct(frame, frame_addr, 1); |
43fff238 FB |
1325 | } |
1326 | ||
624f7979 | 1327 | static void setup_rt_frame(int usig, struct target_sigaction *ka, |
a745ec6d PB |
1328 | target_siginfo_t *info, |
1329 | target_sigset_t *set, CPUState *env) | |
1330 | { | |
1331 | if (get_osversion() >= 0x020612) { | |
1332 | setup_rt_frame_v2(usig, ka, info, set, env); | |
1333 | } else { | |
1334 | setup_rt_frame_v1(usig, ka, info, set, env); | |
1335 | } | |
1336 | } | |
1337 | ||
43fff238 FB |
1338 | static int |
1339 | restore_sigcontext(CPUState *env, struct target_sigcontext *sc) | |
1340 | { | |
1341 | int err = 0; | |
b5ff1b31 | 1342 | uint32_t cpsr; |
43fff238 FB |
1343 | |
1344 | __get_user_error(env->regs[0], &sc->arm_r0, err); | |
1345 | __get_user_error(env->regs[1], &sc->arm_r1, err); | |
1346 | __get_user_error(env->regs[2], &sc->arm_r2, err); | |
1347 | __get_user_error(env->regs[3], &sc->arm_r3, err); | |
1348 | __get_user_error(env->regs[4], &sc->arm_r4, err); | |
1349 | __get_user_error(env->regs[5], &sc->arm_r5, err); | |
1350 | __get_user_error(env->regs[6], &sc->arm_r6, err); | |
1351 | __get_user_error(env->regs[7], &sc->arm_r7, err); | |
1352 | __get_user_error(env->regs[8], &sc->arm_r8, err); | |
1353 | __get_user_error(env->regs[9], &sc->arm_r9, err); | |
1354 | __get_user_error(env->regs[10], &sc->arm_r10, err); | |
1355 | __get_user_error(env->regs[11], &sc->arm_fp, err); | |
1356 | __get_user_error(env->regs[12], &sc->arm_ip, err); | |
1357 | __get_user_error(env->regs[13], &sc->arm_sp, err); | |
1358 | __get_user_error(env->regs[14], &sc->arm_lr, err); | |
1359 | __get_user_error(env->regs[15], &sc->arm_pc, err); | |
1360 | #ifdef TARGET_CONFIG_CPU_32 | |
b5ff1b31 | 1361 | __get_user_error(cpsr, &sc->arm_cpsr, err); |
75b680e5 | 1362 | cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC); |
43fff238 FB |
1363 | #endif |
1364 | ||
1365 | err |= !valid_user_regs(env); | |
1366 | ||
1367 | return err; | |
1368 | } | |
1369 | ||
a8c33204 | 1370 | long do_sigreturn_v1(CPUState *env) |
43fff238 | 1371 | { |
f8b0aa25 | 1372 | abi_ulong frame_addr; |
a8c33204 | 1373 | struct sigframe_v1 *frame; |
43fff238 FB |
1374 | target_sigset_t set; |
1375 | sigset_t host_set; | |
9231944d | 1376 | int i; |
43fff238 FB |
1377 | |
1378 | /* | |
1379 | * Since we stacked the signal on a 64-bit boundary, | |
1380 | * then 'sp' should be word aligned here. If it's | |
1381 | * not, then the user is trying to mess with us. | |
1382 | */ | |
1383 | if (env->regs[13] & 7) | |
1384 | goto badframe; | |
1385 | ||
f8b0aa25 FB |
1386 | frame_addr = env->regs[13]; |
1387 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1388 | goto badframe; | |
43fff238 | 1389 | |
9231944d FB |
1390 | if (__get_user(set.sig[0], &frame->sc.oldmask)) |
1391 | goto badframe; | |
1392 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
1393 | if (__get_user(set.sig[i], &frame->extramask[i - 1])) | |
1394 | goto badframe; | |
1395 | } | |
43fff238 | 1396 | |
9231944d | 1397 | target_to_host_sigset_internal(&host_set, &set); |
43fff238 FB |
1398 | sigprocmask(SIG_SETMASK, &host_set, NULL); |
1399 | ||
1400 | if (restore_sigcontext(env, &frame->sc)) | |
1401 | goto badframe; | |
1402 | ||
1403 | #if 0 | |
1404 | /* Send SIGTRAP if we're single-stepping */ | |
1405 | if (ptrace_cancel_bpt(current)) | |
1406 | send_sig(SIGTRAP, current, 1); | |
1407 | #endif | |
f8b0aa25 FB |
1408 | unlock_user_struct(frame, frame_addr, 0); |
1409 | return env->regs[0]; | |
43fff238 FB |
1410 | |
1411 | badframe: | |
f8b0aa25 | 1412 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1413 | force_sig(SIGSEGV /* , current */); |
1414 | return 0; | |
1415 | } | |
1416 | ||
a8c33204 PB |
1417 | static int do_sigframe_return_v2(CPUState *env, target_ulong frame_addr, |
1418 | struct target_ucontext_v2 *uc) | |
1419 | { | |
1420 | sigset_t host_set; | |
1421 | ||
1422 | target_to_host_sigset(&host_set, &uc->tuc_sigmask); | |
1423 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1424 | ||
1425 | if (restore_sigcontext(env, &uc->tuc_mcontext)) | |
1426 | return 1; | |
1427 | ||
1428 | if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
1429 | return 1; | |
1430 | ||
1431 | #if 0 | |
1432 | /* Send SIGTRAP if we're single-stepping */ | |
1433 | if (ptrace_cancel_bpt(current)) | |
1434 | send_sig(SIGTRAP, current, 1); | |
1435 | #endif | |
1436 | ||
1437 | return 0; | |
1438 | } | |
1439 | ||
1440 | long do_sigreturn_v2(CPUState *env) | |
1441 | { | |
1442 | abi_ulong frame_addr; | |
1443 | struct sigframe_v2 *frame; | |
1444 | ||
1445 | /* | |
1446 | * Since we stacked the signal on a 64-bit boundary, | |
1447 | * then 'sp' should be word aligned here. If it's | |
1448 | * not, then the user is trying to mess with us. | |
1449 | */ | |
1450 | if (env->regs[13] & 7) | |
1451 | goto badframe; | |
1452 | ||
1453 | frame_addr = env->regs[13]; | |
1454 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1455 | goto badframe; | |
1456 | ||
1457 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) | |
1458 | goto badframe; | |
1459 | ||
1460 | unlock_user_struct(frame, frame_addr, 0); | |
1461 | return env->regs[0]; | |
1462 | ||
1463 | badframe: | |
1464 | unlock_user_struct(frame, frame_addr, 0); | |
1465 | force_sig(SIGSEGV /* , current */); | |
1466 | return 0; | |
1467 | } | |
1468 | ||
1469 | long do_sigreturn(CPUState *env) | |
1470 | { | |
1471 | if (get_osversion() >= 0x020612) { | |
1472 | return do_sigreturn_v2(env); | |
1473 | } else { | |
1474 | return do_sigreturn_v1(env); | |
1475 | } | |
1476 | } | |
1477 | ||
a745ec6d | 1478 | long do_rt_sigreturn_v1(CPUState *env) |
43fff238 | 1479 | { |
f8b0aa25 | 1480 | abi_ulong frame_addr; |
a745ec6d PB |
1481 | struct rt_sigframe_v1 *frame; |
1482 | sigset_t host_set; | |
1483 | ||
1484 | /* | |
1485 | * Since we stacked the signal on a 64-bit boundary, | |
1486 | * then 'sp' should be word aligned here. If it's | |
1487 | * not, then the user is trying to mess with us. | |
1488 | */ | |
1489 | if (env->regs[13] & 7) | |
1490 | goto badframe; | |
1491 | ||
1492 | frame_addr = env->regs[13]; | |
1493 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1494 | goto badframe; | |
1495 | ||
1496 | target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask); | |
1497 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
1498 | ||
1499 | if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) | |
1500 | goto badframe; | |
1501 | ||
1502 | if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT) | |
1503 | goto badframe; | |
1504 | ||
1505 | #if 0 | |
1506 | /* Send SIGTRAP if we're single-stepping */ | |
1507 | if (ptrace_cancel_bpt(current)) | |
1508 | send_sig(SIGTRAP, current, 1); | |
1509 | #endif | |
1510 | unlock_user_struct(frame, frame_addr, 0); | |
1511 | return env->regs[0]; | |
1512 | ||
1513 | badframe: | |
1514 | unlock_user_struct(frame, frame_addr, 0); | |
1515 | force_sig(SIGSEGV /* , current */); | |
1516 | return 0; | |
1517 | } | |
1518 | ||
1519 | long do_rt_sigreturn_v2(CPUState *env) | |
1520 | { | |
1521 | abi_ulong frame_addr; | |
1522 | struct rt_sigframe_v2 *frame; | |
43fff238 FB |
1523 | |
1524 | /* | |
1525 | * Since we stacked the signal on a 64-bit boundary, | |
1526 | * then 'sp' should be word aligned here. If it's | |
1527 | * not, then the user is trying to mess with us. | |
1528 | */ | |
1529 | if (env->regs[13] & 7) | |
1530 | goto badframe; | |
1531 | ||
f8b0aa25 FB |
1532 | frame_addr = env->regs[13]; |
1533 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
1534 | goto badframe; | |
43fff238 | 1535 | |
a8c33204 PB |
1536 | if (do_sigframe_return_v2(env, frame_addr, &frame->uc)) |
1537 | goto badframe; | |
a04e134a | 1538 | |
f8b0aa25 | 1539 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1540 | return env->regs[0]; |
1541 | ||
1542 | badframe: | |
f8b0aa25 | 1543 | unlock_user_struct(frame, frame_addr, 0); |
43fff238 FB |
1544 | force_sig(SIGSEGV /* , current */); |
1545 | return 0; | |
1546 | } | |
1547 | ||
a745ec6d PB |
1548 | long do_rt_sigreturn(CPUState *env) |
1549 | { | |
1550 | if (get_osversion() >= 0x020612) { | |
1551 | return do_rt_sigreturn_v2(env); | |
1552 | } else { | |
1553 | return do_rt_sigreturn_v1(env); | |
1554 | } | |
1555 | } | |
1556 | ||
6d5e216d | 1557 | #elif defined(TARGET_SPARC) |
80a9d035 | 1558 | |
6d5e216d FB |
1559 | #define __SUNOS_MAXWIN 31 |
1560 | ||
1561 | /* This is what SunOS does, so shall I. */ | |
1562 | struct target_sigcontext { | |
992f48a0 | 1563 | abi_ulong sigc_onstack; /* state to restore */ |
6d5e216d | 1564 | |
992f48a0 BS |
1565 | abi_ulong sigc_mask; /* sigmask to restore */ |
1566 | abi_ulong sigc_sp; /* stack pointer */ | |
1567 | abi_ulong sigc_pc; /* program counter */ | |
1568 | abi_ulong sigc_npc; /* next program counter */ | |
1569 | abi_ulong sigc_psr; /* for condition codes etc */ | |
1570 | abi_ulong sigc_g1; /* User uses these two registers */ | |
1571 | abi_ulong sigc_o0; /* within the trampoline code. */ | |
6d5e216d FB |
1572 | |
1573 | /* Now comes information regarding the users window set | |
1574 | * at the time of the signal. | |
1575 | */ | |
992f48a0 | 1576 | abi_ulong sigc_oswins; /* outstanding windows */ |
6d5e216d FB |
1577 | |
1578 | /* stack ptrs for each regwin buf */ | |
1579 | char *sigc_spbuf[__SUNOS_MAXWIN]; | |
1580 | ||
1581 | /* Windows to restore after signal */ | |
1582 | struct { | |
992f48a0 BS |
1583 | abi_ulong locals[8]; |
1584 | abi_ulong ins[8]; | |
6d5e216d FB |
1585 | } sigc_wbuf[__SUNOS_MAXWIN]; |
1586 | }; | |
1587 | /* A Sparc stack frame */ | |
1588 | struct sparc_stackf { | |
992f48a0 BS |
1589 | abi_ulong locals[8]; |
1590 | abi_ulong ins[6]; | |
6d5e216d | 1591 | struct sparc_stackf *fp; |
992f48a0 | 1592 | abi_ulong callers_pc; |
6d5e216d | 1593 | char *structptr; |
992f48a0 BS |
1594 | abi_ulong xargs[6]; |
1595 | abi_ulong xxargs[1]; | |
6d5e216d FB |
1596 | }; |
1597 | ||
1598 | typedef struct { | |
1599 | struct { | |
992f48a0 BS |
1600 | abi_ulong psr; |
1601 | abi_ulong pc; | |
1602 | abi_ulong npc; | |
1603 | abi_ulong y; | |
1604 | abi_ulong u_regs[16]; /* globals and ins */ | |
6d5e216d FB |
1605 | } si_regs; |
1606 | int si_mask; | |
1607 | } __siginfo_t; | |
1608 | ||
1609 | typedef struct { | |
1610 | unsigned long si_float_regs [32]; | |
1611 | unsigned long si_fsr; | |
1612 | unsigned long si_fpqdepth; | |
1613 | struct { | |
1614 | unsigned long *insn_addr; | |
1615 | unsigned long insn; | |
1616 | } si_fpqueue [16]; | |
74ccb34e | 1617 | } qemu_siginfo_fpu_t; |
6d5e216d FB |
1618 | |
1619 | ||
1620 | struct target_signal_frame { | |
1621 | struct sparc_stackf ss; | |
1622 | __siginfo_t info; | |
f8b0aa25 | 1623 | abi_ulong fpu_save; |
992f48a0 BS |
1624 | abi_ulong insns[2] __attribute__ ((aligned (8))); |
1625 | abi_ulong extramask[TARGET_NSIG_WORDS - 1]; | |
1626 | abi_ulong extra_size; /* Should be 0 */ | |
74ccb34e | 1627 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
1628 | }; |
1629 | struct target_rt_signal_frame { | |
1630 | struct sparc_stackf ss; | |
1631 | siginfo_t info; | |
992f48a0 | 1632 | abi_ulong regs[20]; |
6d5e216d | 1633 | sigset_t mask; |
f8b0aa25 | 1634 | abi_ulong fpu_save; |
6d5e216d FB |
1635 | unsigned int insns[2]; |
1636 | stack_t stack; | |
1637 | unsigned int extra_size; /* Should be 0 */ | |
74ccb34e | 1638 | qemu_siginfo_fpu_t fpu_state; |
6d5e216d FB |
1639 | }; |
1640 | ||
e80cfcfc FB |
1641 | #define UREG_O0 16 |
1642 | #define UREG_O6 22 | |
1643 | #define UREG_I0 0 | |
1644 | #define UREG_I1 1 | |
1645 | #define UREG_I2 2 | |
5bfb56b2 BS |
1646 | #define UREG_I3 3 |
1647 | #define UREG_I4 4 | |
1648 | #define UREG_I5 5 | |
e80cfcfc FB |
1649 | #define UREG_I6 6 |
1650 | #define UREG_I7 7 | |
1651 | #define UREG_L0 8 | |
6d5e216d FB |
1652 | #define UREG_FP UREG_I6 |
1653 | #define UREG_SP UREG_O6 | |
1654 | ||
624f7979 | 1655 | static inline abi_ulong get_sigframe(struct target_sigaction *sa, |
459a4017 | 1656 | CPUState *env, unsigned long framesize) |
6d5e216d | 1657 | { |
459a4017 | 1658 | abi_ulong sp; |
6d5e216d FB |
1659 | |
1660 | sp = env->regwptr[UREG_FP]; | |
6d5e216d FB |
1661 | |
1662 | /* This is the X/Open sanctioned signal stack switching. */ | |
624f7979 | 1663 | if (sa->sa_flags & TARGET_SA_ONSTACK) { |
a04e134a TS |
1664 | if (!on_sig_stack(sp) |
1665 | && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7)) | |
1666 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; | |
6d5e216d | 1667 | } |
459a4017 | 1668 | return sp - framesize; |
6d5e216d FB |
1669 | } |
1670 | ||
1671 | static int | |
992f48a0 | 1672 | setup___siginfo(__siginfo_t *si, CPUState *env, abi_ulong mask) |
6d5e216d FB |
1673 | { |
1674 | int err = 0, i; | |
1675 | ||
6d5e216d | 1676 | err |= __put_user(env->psr, &si->si_regs.psr); |
6d5e216d FB |
1677 | err |= __put_user(env->pc, &si->si_regs.pc); |
1678 | err |= __put_user(env->npc, &si->si_regs.npc); | |
1679 | err |= __put_user(env->y, &si->si_regs.y); | |
a315a145 | 1680 | for (i=0; i < 8; i++) { |
6d5e216d FB |
1681 | err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]); |
1682 | } | |
a315a145 | 1683 | for (i=0; i < 8; i++) { |
e80cfcfc | 1684 | err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]); |
6d5e216d | 1685 | } |
6d5e216d FB |
1686 | err |= __put_user(mask, &si->si_mask); |
1687 | return err; | |
1688 | } | |
e80cfcfc | 1689 | |
80a9d035 | 1690 | #if 0 |
6d5e216d FB |
1691 | static int |
1692 | setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/ | |
1693 | CPUState *env, unsigned long mask) | |
1694 | { | |
1695 | int err = 0; | |
1696 | ||
1697 | err |= __put_user(mask, &sc->sigc_mask); | |
1698 | err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp); | |
1699 | err |= __put_user(env->pc, &sc->sigc_pc); | |
1700 | err |= __put_user(env->npc, &sc->sigc_npc); | |
1701 | err |= __put_user(env->psr, &sc->sigc_psr); | |
1702 | err |= __put_user(env->gregs[1], &sc->sigc_g1); | |
1703 | err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0); | |
1704 | ||
1705 | return err; | |
1706 | } | |
80a9d035 | 1707 | #endif |
6d5e216d FB |
1708 | #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7))) |
1709 | ||
624f7979 | 1710 | static void setup_frame(int sig, struct target_sigaction *ka, |
6d5e216d FB |
1711 | target_sigset_t *set, CPUState *env) |
1712 | { | |
459a4017 | 1713 | abi_ulong sf_addr; |
6d5e216d FB |
1714 | struct target_signal_frame *sf; |
1715 | int sigframe_size, err, i; | |
1716 | ||
1717 | /* 1. Make sure everything is clean */ | |
1718 | //synchronize_user_stack(); | |
1719 | ||
1720 | sigframe_size = NF_ALIGNEDSZ; | |
459a4017 | 1721 | sf_addr = get_sigframe(ka, env, sigframe_size); |
6d5e216d | 1722 | |
459a4017 FB |
1723 | sf = lock_user(VERIFY_WRITE, sf_addr, |
1724 | sizeof(struct target_signal_frame), 0); | |
1725 | if (!sf) | |
1726 | goto sigsegv; | |
1727 | ||
e80cfcfc | 1728 | //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); |
6d5e216d FB |
1729 | #if 0 |
1730 | if (invalid_frame_pointer(sf, sigframe_size)) | |
1731 | goto sigill_and_return; | |
1732 | #endif | |
1733 | /* 2. Save the current process state */ | |
1734 | err = setup___siginfo(&sf->info, env, set->sig[0]); | |
1735 | err |= __put_user(0, &sf->extra_size); | |
1736 | ||
1737 | //err |= save_fpu_state(regs, &sf->fpu_state); | |
1738 | //err |= __put_user(&sf->fpu_state, &sf->fpu_save); | |
1739 | ||
1740 | err |= __put_user(set->sig[0], &sf->info.si_mask); | |
1741 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
1742 | err |= __put_user(set->sig[i + 1], &sf->extramask[i]); | |
1743 | } | |
1744 | ||
a315a145 | 1745 | for (i = 0; i < 8; i++) { |
e80cfcfc | 1746 | err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]); |
6d5e216d | 1747 | } |
a315a145 | 1748 | for (i = 0; i < 8; i++) { |
e80cfcfc | 1749 | err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]); |
6d5e216d | 1750 | } |
6d5e216d FB |
1751 | if (err) |
1752 | goto sigsegv; | |
1753 | ||
1754 | /* 3. signal handler back-trampoline and parameters */ | |
459a4017 | 1755 | env->regwptr[UREG_FP] = sf_addr; |
6d5e216d | 1756 | env->regwptr[UREG_I0] = sig; |
459a4017 FB |
1757 | env->regwptr[UREG_I1] = sf_addr + |
1758 | offsetof(struct target_signal_frame, info); | |
1759 | env->regwptr[UREG_I2] = sf_addr + | |
1760 | offsetof(struct target_signal_frame, info); | |
6d5e216d FB |
1761 | |
1762 | /* 4. signal handler */ | |
624f7979 | 1763 | env->pc = ka->_sa_handler; |
6d5e216d FB |
1764 | env->npc = (env->pc + 4); |
1765 | /* 5. return to kernel instructions */ | |
624f7979 PB |
1766 | if (ka->sa_restorer) |
1767 | env->regwptr[UREG_I7] = ka->sa_restorer; | |
6d5e216d | 1768 | else { |
775b58d8 | 1769 | uint32_t val32; |
459a4017 FB |
1770 | |
1771 | env->regwptr[UREG_I7] = sf_addr + | |
1772 | offsetof(struct target_signal_frame, insns) - 2 * 4; | |
6d5e216d FB |
1773 | |
1774 | /* mov __NR_sigreturn, %g1 */ | |
775b58d8 FB |
1775 | val32 = 0x821020d8; |
1776 | err |= __put_user(val32, &sf->insns[0]); | |
6d5e216d FB |
1777 | |
1778 | /* t 0x10 */ | |
775b58d8 FB |
1779 | val32 = 0x91d02010; |
1780 | err |= __put_user(val32, &sf->insns[1]); | |
6d5e216d FB |
1781 | if (err) |
1782 | goto sigsegv; | |
1783 | ||
1784 | /* Flush instruction space. */ | |
1785 | //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0])); | |
80a9d035 | 1786 | // tb_flush(env); |
6d5e216d | 1787 | } |
459a4017 | 1788 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d | 1789 | return; |
459a4017 FB |
1790 | #if 0 |
1791 | sigill_and_return: | |
6d5e216d | 1792 | force_sig(TARGET_SIGILL); |
459a4017 | 1793 | #endif |
6d5e216d | 1794 | sigsegv: |
e80cfcfc | 1795 | //fprintf(stderr, "force_sig\n"); |
459a4017 | 1796 | unlock_user(sf, sf_addr, sizeof(struct target_signal_frame)); |
6d5e216d FB |
1797 | force_sig(TARGET_SIGSEGV); |
1798 | } | |
1799 | static inline int | |
74ccb34e | 1800 | restore_fpu_state(CPUState *env, qemu_siginfo_fpu_t *fpu) |
6d5e216d FB |
1801 | { |
1802 | int err; | |
1803 | #if 0 | |
1804 | #ifdef CONFIG_SMP | |
1805 | if (current->flags & PF_USEDFPU) | |
1806 | regs->psr &= ~PSR_EF; | |
1807 | #else | |
1808 | if (current == last_task_used_math) { | |
1809 | last_task_used_math = 0; | |
1810 | regs->psr &= ~PSR_EF; | |
1811 | } | |
1812 | #endif | |
1813 | current->used_math = 1; | |
1814 | current->flags &= ~PF_USEDFPU; | |
1815 | #endif | |
1816 | #if 0 | |
1817 | if (verify_area (VERIFY_READ, fpu, sizeof(*fpu))) | |
1818 | return -EFAULT; | |
1819 | #endif | |
1820 | ||
fafffaef FB |
1821 | #if 0 |
1822 | /* XXX: incorrect */ | |
6d5e216d FB |
1823 | err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0], |
1824 | (sizeof(unsigned long) * 32)); | |
fafffaef | 1825 | #endif |
6d5e216d FB |
1826 | err |= __get_user(env->fsr, &fpu->si_fsr); |
1827 | #if 0 | |
1828 | err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth); | |
1829 | if (current->thread.fpqdepth != 0) | |
1830 | err |= __copy_from_user(¤t->thread.fpqueue[0], | |
1831 | &fpu->si_fpqueue[0], | |
1832 | ((sizeof(unsigned long) + | |
1833 | (sizeof(unsigned long *)))*16)); | |
1834 | #endif | |
1835 | return err; | |
1836 | } | |
1837 | ||
1838 | ||
624f7979 | 1839 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
6d5e216d FB |
1840 | target_siginfo_t *info, |
1841 | target_sigset_t *set, CPUState *env) | |
1842 | { | |
1843 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
1844 | } | |
1845 | ||
1846 | long do_sigreturn(CPUState *env) | |
1847 | { | |
f8b0aa25 | 1848 | abi_ulong sf_addr; |
6d5e216d | 1849 | struct target_signal_frame *sf; |
e80cfcfc | 1850 | uint32_t up_psr, pc, npc; |
6d5e216d | 1851 | target_sigset_t set; |
e80cfcfc | 1852 | sigset_t host_set; |
f8b0aa25 | 1853 | abi_ulong fpu_save_addr; |
e80cfcfc | 1854 | int err, i; |
6d5e216d | 1855 | |
f8b0aa25 FB |
1856 | sf_addr = env->regwptr[UREG_FP]; |
1857 | if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) | |
1858 | goto segv_and_exit; | |
80a9d035 | 1859 | #if 0 |
e80cfcfc FB |
1860 | fprintf(stderr, "sigreturn\n"); |
1861 | fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]); | |
80a9d035 | 1862 | #endif |
e80cfcfc | 1863 | //cpu_dump_state(env, stderr, fprintf, 0); |
6d5e216d FB |
1864 | |
1865 | /* 1. Make sure we are not getting garbage from the user */ | |
6d5e216d | 1866 | |
f8b0aa25 | 1867 | if (sf_addr & 3) |
6d5e216d FB |
1868 | goto segv_and_exit; |
1869 | ||
1870 | err = __get_user(pc, &sf->info.si_regs.pc); | |
1871 | err |= __get_user(npc, &sf->info.si_regs.npc); | |
1872 | ||
6d5e216d FB |
1873 | if ((pc | npc) & 3) |
1874 | goto segv_and_exit; | |
1875 | ||
1876 | /* 2. Restore the state */ | |
e80cfcfc FB |
1877 | err |= __get_user(up_psr, &sf->info.si_regs.psr); |
1878 | ||
6d5e216d | 1879 | /* User can only change condition codes and FPU enabling in %psr. */ |
a315a145 FB |
1880 | env->psr = (up_psr & (PSR_ICC /* | PSR_EF */)) |
1881 | | (env->psr & ~(PSR_ICC /* | PSR_EF */)); | |
1882 | ||
1883 | env->pc = pc; | |
1884 | env->npc = npc; | |
e80cfcfc | 1885 | err |= __get_user(env->y, &sf->info.si_regs.y); |
a315a145 | 1886 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
1887 | err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]); |
1888 | } | |
a315a145 | 1889 | for (i=0; i < 8; i++) { |
e80cfcfc FB |
1890 | err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]); |
1891 | } | |
6d5e216d | 1892 | |
f8b0aa25 | 1893 | err |= __get_user(fpu_save_addr, &sf->fpu_save); |
6d5e216d | 1894 | |
e80cfcfc FB |
1895 | //if (fpu_save) |
1896 | // err |= restore_fpu_state(env, fpu_save); | |
6d5e216d FB |
1897 | |
1898 | /* This is pretty much atomic, no amount locking would prevent | |
1899 | * the races which exist anyways. | |
1900 | */ | |
1901 | err |= __get_user(set.sig[0], &sf->info.si_mask); | |
e80cfcfc FB |
1902 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { |
1903 | err |= (__get_user(set.sig[i], &sf->extramask[i - 1])); | |
1904 | } | |
1905 | ||
1906 | target_to_host_sigset_internal(&host_set, &set); | |
1907 | sigprocmask(SIG_SETMASK, &host_set, NULL); | |
6d5e216d FB |
1908 | |
1909 | if (err) | |
1910 | goto segv_and_exit; | |
f8b0aa25 | 1911 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
1912 | return env->regwptr[0]; |
1913 | ||
1914 | segv_and_exit: | |
f8b0aa25 | 1915 | unlock_user_struct(sf, sf_addr, 0); |
6d5e216d FB |
1916 | force_sig(TARGET_SIGSEGV); |
1917 | } | |
1918 | ||
1919 | long do_rt_sigreturn(CPUState *env) | |
1920 | { | |
1921 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 1922 | return -TARGET_ENOSYS; |
6d5e216d FB |
1923 | } |
1924 | ||
459a4017 | 1925 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) |
5bfb56b2 BS |
1926 | #define MC_TSTATE 0 |
1927 | #define MC_PC 1 | |
1928 | #define MC_NPC 2 | |
1929 | #define MC_Y 3 | |
1930 | #define MC_G1 4 | |
1931 | #define MC_G2 5 | |
1932 | #define MC_G3 6 | |
1933 | #define MC_G4 7 | |
1934 | #define MC_G5 8 | |
1935 | #define MC_G6 9 | |
1936 | #define MC_G7 10 | |
1937 | #define MC_O0 11 | |
1938 | #define MC_O1 12 | |
1939 | #define MC_O2 13 | |
1940 | #define MC_O3 14 | |
1941 | #define MC_O4 15 | |
1942 | #define MC_O5 16 | |
1943 | #define MC_O6 17 | |
1944 | #define MC_O7 18 | |
1945 | #define MC_NGREG 19 | |
1946 | ||
992f48a0 | 1947 | typedef abi_ulong target_mc_greg_t; |
5bfb56b2 BS |
1948 | typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG]; |
1949 | ||
1950 | struct target_mc_fq { | |
992f48a0 | 1951 | abi_ulong *mcfq_addr; |
5bfb56b2 BS |
1952 | uint32_t mcfq_insn; |
1953 | }; | |
1954 | ||
1955 | struct target_mc_fpu { | |
1956 | union { | |
1957 | uint32_t sregs[32]; | |
1958 | uint64_t dregs[32]; | |
1959 | //uint128_t qregs[16]; | |
1960 | } mcfpu_fregs; | |
992f48a0 BS |
1961 | abi_ulong mcfpu_fsr; |
1962 | abi_ulong mcfpu_fprs; | |
1963 | abi_ulong mcfpu_gsr; | |
5bfb56b2 BS |
1964 | struct target_mc_fq *mcfpu_fq; |
1965 | unsigned char mcfpu_qcnt; | |
1966 | unsigned char mcfpu_qentsz; | |
1967 | unsigned char mcfpu_enab; | |
1968 | }; | |
1969 | typedef struct target_mc_fpu target_mc_fpu_t; | |
1970 | ||
1971 | typedef struct { | |
1972 | target_mc_gregset_t mc_gregs; | |
1973 | target_mc_greg_t mc_fp; | |
1974 | target_mc_greg_t mc_i7; | |
1975 | target_mc_fpu_t mc_fpregs; | |
1976 | } target_mcontext_t; | |
1977 | ||
1978 | struct target_ucontext { | |
1979 | struct target_ucontext *uc_link; | |
992f48a0 | 1980 | abi_ulong uc_flags; |
5bfb56b2 BS |
1981 | target_sigset_t uc_sigmask; |
1982 | target_mcontext_t uc_mcontext; | |
1983 | }; | |
1984 | ||
1985 | /* A V9 register window */ | |
1986 | struct target_reg_window { | |
992f48a0 BS |
1987 | abi_ulong locals[8]; |
1988 | abi_ulong ins[8]; | |
5bfb56b2 BS |
1989 | }; |
1990 | ||
1991 | #define TARGET_STACK_BIAS 2047 | |
1992 | ||
1993 | /* {set, get}context() needed for 64-bit SparcLinux userland. */ | |
1994 | void sparc64_set_context(CPUSPARCState *env) | |
1995 | { | |
459a4017 FB |
1996 | abi_ulong ucp_addr; |
1997 | struct target_ucontext *ucp; | |
5bfb56b2 | 1998 | target_mc_gregset_t *grp; |
992f48a0 | 1999 | abi_ulong pc, npc, tstate; |
459a4017 | 2000 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2001 | unsigned char fenab; |
2002 | int err; | |
2003 | unsigned int i; | |
5bfb56b2 | 2004 | |
459a4017 FB |
2005 | ucp_addr = env->regwptr[UREG_I0]; |
2006 | if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) | |
2007 | goto do_sigsegv; | |
5bfb56b2 | 2008 | grp = &ucp->uc_mcontext.mc_gregs; |
579a97f7 FB |
2009 | err = __get_user(pc, &((*grp)[MC_PC])); |
2010 | err |= __get_user(npc, &((*grp)[MC_NPC])); | |
5bfb56b2 BS |
2011 | if (err || ((pc | npc) & 3)) |
2012 | goto do_sigsegv; | |
2013 | if (env->regwptr[UREG_I1]) { | |
2014 | target_sigset_t target_set; | |
2015 | sigset_t set; | |
2016 | ||
2017 | if (TARGET_NSIG_WORDS == 1) { | |
579a97f7 | 2018 | if (__get_user(target_set.sig[0], &ucp->uc_sigmask.sig[0])) |
5bfb56b2 BS |
2019 | goto do_sigsegv; |
2020 | } else { | |
459a4017 FB |
2021 | abi_ulong *src, *dst; |
2022 | src = ucp->uc_sigmask.sig; | |
2023 | dst = target_set.sig; | |
992f48a0 | 2024 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
5bfb56b2 | 2025 | i++, dst++, src++) |
459a4017 | 2026 | err |= __get_user(*dst, src); |
5bfb56b2 BS |
2027 | if (err) |
2028 | goto do_sigsegv; | |
2029 | } | |
2030 | target_to_host_sigset_internal(&set, &target_set); | |
2031 | sigprocmask(SIG_SETMASK, &set, NULL); | |
2032 | } | |
2033 | env->pc = pc; | |
2034 | env->npc = npc; | |
579a97f7 FB |
2035 | err |= __get_user(env->y, &((*grp)[MC_Y])); |
2036 | err |= __get_user(tstate, &((*grp)[MC_TSTATE])); | |
5bfb56b2 BS |
2037 | env->asi = (tstate >> 24) & 0xff; |
2038 | PUT_CCR(env, tstate >> 32); | |
2039 | PUT_CWP64(env, tstate & 0x1f); | |
579a97f7 FB |
2040 | err |= __get_user(env->gregs[1], (&(*grp)[MC_G1])); |
2041 | err |= __get_user(env->gregs[2], (&(*grp)[MC_G2])); | |
2042 | err |= __get_user(env->gregs[3], (&(*grp)[MC_G3])); | |
2043 | err |= __get_user(env->gregs[4], (&(*grp)[MC_G4])); | |
2044 | err |= __get_user(env->gregs[5], (&(*grp)[MC_G5])); | |
2045 | err |= __get_user(env->gregs[6], (&(*grp)[MC_G6])); | |
2046 | err |= __get_user(env->gregs[7], (&(*grp)[MC_G7])); | |
2047 | err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0])); | |
2048 | err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1])); | |
2049 | err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2])); | |
2050 | err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3])); | |
2051 | err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4])); | |
2052 | err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5])); | |
2053 | err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6])); | |
2054 | err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7])); | |
2055 | ||
2056 | err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp)); | |
2057 | err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7)); | |
579a97f7 | 2058 | |
459a4017 FB |
2059 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2060 | if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2061 | abi_ulong) != 0) | |
2062 | goto do_sigsegv; | |
2063 | if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2064 | abi_ulong) != 0) | |
2065 | goto do_sigsegv; | |
579a97f7 FB |
2066 | err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab)); |
2067 | err |= __get_user(env->fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs)); | |
459a4017 FB |
2068 | { |
2069 | uint32_t *src, *dst; | |
2070 | src = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; | |
2071 | dst = env->fpr; | |
2072 | /* XXX: check that the CPU storage is the same as user context */ | |
2073 | for (i = 0; i < 64; i++, dst++, src++) | |
2074 | err |= __get_user(*dst, src); | |
2075 | } | |
579a97f7 FB |
2076 | err |= __get_user(env->fsr, |
2077 | &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr)); | |
2078 | err |= __get_user(env->gsr, | |
2079 | &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr)); | |
5bfb56b2 BS |
2080 | if (err) |
2081 | goto do_sigsegv; | |
459a4017 | 2082 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2083 | return; |
2084 | do_sigsegv: | |
459a4017 | 2085 | unlock_user_struct(ucp, ucp_addr, 0); |
5bfb56b2 BS |
2086 | force_sig(SIGSEGV); |
2087 | } | |
2088 | ||
2089 | void sparc64_get_context(CPUSPARCState *env) | |
2090 | { | |
459a4017 FB |
2091 | abi_ulong ucp_addr; |
2092 | struct target_ucontext *ucp; | |
5bfb56b2 BS |
2093 | target_mc_gregset_t *grp; |
2094 | target_mcontext_t *mcp; | |
459a4017 | 2095 | abi_ulong fp, i7, w_addr; |
5bfb56b2 BS |
2096 | int err; |
2097 | unsigned int i; | |
5bfb56b2 BS |
2098 | target_sigset_t target_set; |
2099 | sigset_t set; | |
2100 | ||
459a4017 FB |
2101 | ucp_addr = env->regwptr[UREG_I0]; |
2102 | if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) | |
2103 | goto do_sigsegv; | |
2104 | ||
5bfb56b2 BS |
2105 | mcp = &ucp->uc_mcontext; |
2106 | grp = &mcp->mc_gregs; | |
2107 | ||
2108 | /* Skip over the trap instruction, first. */ | |
2109 | env->pc = env->npc; | |
2110 | env->npc += 4; | |
2111 | ||
2112 | err = 0; | |
2113 | ||
2114 | sigprocmask(0, NULL, &set); | |
2115 | host_to_target_sigset_internal(&target_set, &set); | |
459a4017 | 2116 | if (TARGET_NSIG_WORDS == 1) { |
579a97f7 FB |
2117 | err |= __put_user(target_set.sig[0], |
2118 | (abi_ulong *)&ucp->uc_sigmask); | |
459a4017 FB |
2119 | } else { |
2120 | abi_ulong *src, *dst; | |
2121 | src = target_set.sig; | |
2122 | dst = ucp->uc_sigmask.sig; | |
992f48a0 | 2123 | for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong); |
5bfb56b2 | 2124 | i++, dst++, src++) |
459a4017 | 2125 | err |= __put_user(*src, dst); |
5bfb56b2 BS |
2126 | if (err) |
2127 | goto do_sigsegv; | |
2128 | } | |
2129 | ||
459a4017 FB |
2130 | /* XXX: tstate must be saved properly */ |
2131 | // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE])); | |
579a97f7 FB |
2132 | err |= __put_user(env->pc, &((*grp)[MC_PC])); |
2133 | err |= __put_user(env->npc, &((*grp)[MC_NPC])); | |
2134 | err |= __put_user(env->y, &((*grp)[MC_Y])); | |
2135 | err |= __put_user(env->gregs[1], &((*grp)[MC_G1])); | |
2136 | err |= __put_user(env->gregs[2], &((*grp)[MC_G2])); | |
2137 | err |= __put_user(env->gregs[3], &((*grp)[MC_G3])); | |
2138 | err |= __put_user(env->gregs[4], &((*grp)[MC_G4])); | |
2139 | err |= __put_user(env->gregs[5], &((*grp)[MC_G5])); | |
2140 | err |= __put_user(env->gregs[6], &((*grp)[MC_G6])); | |
2141 | err |= __put_user(env->gregs[7], &((*grp)[MC_G7])); | |
2142 | err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0])); | |
2143 | err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1])); | |
2144 | err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2])); | |
2145 | err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3])); | |
2146 | err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4])); | |
2147 | err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5])); | |
2148 | err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6])); | |
2149 | err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7])); | |
2150 | ||
459a4017 FB |
2151 | w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6]; |
2152 | fp = i7 = 0; | |
2153 | if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]), | |
2154 | abi_ulong) != 0) | |
2155 | goto do_sigsegv; | |
2156 | if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]), | |
2157 | abi_ulong) != 0) | |
2158 | goto do_sigsegv; | |
579a97f7 FB |
2159 | err |= __put_user(fp, &(mcp->mc_fp)); |
2160 | err |= __put_user(i7, &(mcp->mc_i7)); | |
5bfb56b2 | 2161 | |
459a4017 FB |
2162 | { |
2163 | uint32_t *src, *dst; | |
2164 | src = env->fpr; | |
2165 | dst = ucp->uc_mcontext.mc_fpregs.mcfpu_fregs.sregs; | |
2166 | /* XXX: check that the CPU storage is the same as user context */ | |
2167 | for (i = 0; i < 64; i++, dst++, src++) | |
2168 | err |= __put_user(*src, dst); | |
2169 | } | |
579a97f7 FB |
2170 | err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr)); |
2171 | err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr)); | |
2172 | err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs)); | |
5bfb56b2 BS |
2173 | |
2174 | if (err) | |
2175 | goto do_sigsegv; | |
459a4017 | 2176 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2177 | return; |
2178 | do_sigsegv: | |
459a4017 | 2179 | unlock_user_struct(ucp, ucp_addr, 1); |
5bfb56b2 BS |
2180 | force_sig(SIGSEGV); |
2181 | } | |
2182 | #endif | |
d26bc211 | 2183 | #elif defined(TARGET_ABI_MIPSN64) |
540635ba TS |
2184 | |
2185 | # warning signal handling not implemented | |
2186 | ||
624f7979 | 2187 | static void setup_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2188 | target_sigset_t *set, CPUState *env) |
2189 | { | |
2190 | fprintf(stderr, "setup_frame: not implemented\n"); | |
2191 | } | |
2192 | ||
624f7979 | 2193 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2194 | target_siginfo_t *info, |
2195 | target_sigset_t *set, CPUState *env) | |
2196 | { | |
2197 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2198 | } | |
2199 | ||
2200 | long do_sigreturn(CPUState *env) | |
2201 | { | |
2202 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 2203 | return -TARGET_ENOSYS; |
540635ba TS |
2204 | } |
2205 | ||
2206 | long do_rt_sigreturn(CPUState *env) | |
2207 | { | |
2208 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2209 | return -TARGET_ENOSYS; |
540635ba TS |
2210 | } |
2211 | ||
d26bc211 | 2212 | #elif defined(TARGET_ABI_MIPSN32) |
540635ba TS |
2213 | |
2214 | # warning signal handling not implemented | |
2215 | ||
624f7979 | 2216 | static void setup_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2217 | target_sigset_t *set, CPUState *env) |
2218 | { | |
2219 | fprintf(stderr, "setup_frame: not implemented\n"); | |
2220 | } | |
2221 | ||
624f7979 | 2222 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
540635ba TS |
2223 | target_siginfo_t *info, |
2224 | target_sigset_t *set, CPUState *env) | |
2225 | { | |
2226 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2227 | } | |
2228 | ||
2229 | long do_sigreturn(CPUState *env) | |
2230 | { | |
2231 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 2232 | return -TARGET_ENOSYS; |
540635ba TS |
2233 | } |
2234 | ||
2235 | long do_rt_sigreturn(CPUState *env) | |
2236 | { | |
2237 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2238 | return -TARGET_ENOSYS; |
540635ba TS |
2239 | } |
2240 | ||
d26bc211 | 2241 | #elif defined(TARGET_ABI_MIPSO32) |
106ec879 FB |
2242 | |
2243 | struct target_sigcontext { | |
2244 | uint32_t sc_regmask; /* Unused */ | |
2245 | uint32_t sc_status; | |
2246 | uint64_t sc_pc; | |
2247 | uint64_t sc_regs[32]; | |
2248 | uint64_t sc_fpregs[32]; | |
2249 | uint32_t sc_ownedfp; /* Unused */ | |
2250 | uint32_t sc_fpc_csr; | |
2251 | uint32_t sc_fpc_eir; /* Unused */ | |
2252 | uint32_t sc_used_math; | |
2253 | uint32_t sc_dsp; /* dsp status, was sc_ssflags */ | |
2254 | uint64_t sc_mdhi; | |
2255 | uint64_t sc_mdlo; | |
2256 | target_ulong sc_hi1; /* Was sc_cause */ | |
2257 | target_ulong sc_lo1; /* Was sc_badvaddr */ | |
2258 | target_ulong sc_hi2; /* Was sc_sigset[4] */ | |
2259 | target_ulong sc_lo2; | |
2260 | target_ulong sc_hi3; | |
2261 | target_ulong sc_lo3; | |
2262 | }; | |
2263 | ||
2264 | struct sigframe { | |
2265 | uint32_t sf_ass[4]; /* argument save space for o32 */ | |
2266 | uint32_t sf_code[2]; /* signal trampoline */ | |
2267 | struct target_sigcontext sf_sc; | |
2268 | target_sigset_t sf_mask; | |
2269 | }; | |
2270 | ||
2271 | /* Install trampoline to jump back from signal handler */ | |
2272 | static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall) | |
2273 | { | |
2274 | int err; | |
2275 | ||
2276 | /* | |
2277 | * Set up the return code ... | |
2278 | * | |
2279 | * li v0, __NR__foo_sigreturn | |
2280 | * syscall | |
2281 | */ | |
2282 | ||
2283 | err = __put_user(0x24020000 + syscall, tramp + 0); | |
2284 | err |= __put_user(0x0000000c , tramp + 1); | |
2285 | /* flush_cache_sigtramp((unsigned long) tramp); */ | |
2286 | return err; | |
2287 | } | |
2288 | ||
2289 | static inline int | |
2290 | setup_sigcontext(CPUState *regs, struct target_sigcontext *sc) | |
2291 | { | |
2292 | int err = 0; | |
2293 | ||
b5dc7732 | 2294 | err |= __put_user(regs->active_tc.PC, &sc->sc_pc); |
106ec879 | 2295 | |
b5dc7732 TS |
2296 | #define save_gp_reg(i) do { \ |
2297 | err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ | |
106ec879 FB |
2298 | } while(0) |
2299 | __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2); | |
2300 | save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6); | |
2301 | save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10); | |
2302 | save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14); | |
2303 | save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18); | |
2304 | save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22); | |
2305 | save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26); | |
2306 | save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30); | |
2307 | save_gp_reg(31); | |
388bb21a | 2308 | #undef save_gp_reg |
106ec879 | 2309 | |
b5dc7732 TS |
2310 | err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2311 | err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 FB |
2312 | |
2313 | /* Not used yet, but might be useful if we ever have DSP suppport */ | |
2314 | #if 0 | |
2315 | if (cpu_has_dsp) { | |
2316 | err |= __put_user(mfhi1(), &sc->sc_hi1); | |
2317 | err |= __put_user(mflo1(), &sc->sc_lo1); | |
2318 | err |= __put_user(mfhi2(), &sc->sc_hi2); | |
2319 | err |= __put_user(mflo2(), &sc->sc_lo2); | |
2320 | err |= __put_user(mfhi3(), &sc->sc_hi3); | |
2321 | err |= __put_user(mflo3(), &sc->sc_lo3); | |
2322 | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); | |
2323 | } | |
2324 | /* same with 64 bit */ | |
388bb21a | 2325 | #ifdef CONFIG_64BIT |
106ec879 FB |
2326 | err |= __put_user(regs->hi, &sc->sc_hi[0]); |
2327 | err |= __put_user(regs->lo, &sc->sc_lo[0]); | |
2328 | if (cpu_has_dsp) { | |
2329 | err |= __put_user(mfhi1(), &sc->sc_hi[1]); | |
2330 | err |= __put_user(mflo1(), &sc->sc_lo[1]); | |
2331 | err |= __put_user(mfhi2(), &sc->sc_hi[2]); | |
2332 | err |= __put_user(mflo2(), &sc->sc_lo[2]); | |
2333 | err |= __put_user(mfhi3(), &sc->sc_hi[3]); | |
2334 | err |= __put_user(mflo3(), &sc->sc_lo[3]); | |
2335 | err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); | |
2336 | } | |
388bb21a TS |
2337 | #endif |
2338 | #endif | |
106ec879 | 2339 | |
388bb21a | 2340 | #if 0 |
106ec879 FB |
2341 | err |= __put_user(!!used_math(), &sc->sc_used_math); |
2342 | ||
2343 | if (!used_math()) | |
2344 | goto out; | |
2345 | ||
2346 | /* | |
2347 | * Save FPU state to signal context. Signal handler will "inherit" | |
2348 | * current FPU state. | |
2349 | */ | |
2350 | preempt_disable(); | |
2351 | ||
2352 | if (!is_fpu_owner()) { | |
2353 | own_fpu(); | |
2354 | restore_fp(current); | |
2355 | } | |
2356 | err |= save_fp_context(sc); | |
2357 | ||
2358 | preempt_enable(); | |
2359 | out: | |
2360 | #endif | |
2361 | return err; | |
2362 | } | |
2363 | ||
2364 | static inline int | |
2365 | restore_sigcontext(CPUState *regs, struct target_sigcontext *sc) | |
2366 | { | |
2367 | int err = 0; | |
2368 | ||
2369 | err |= __get_user(regs->CP0_EPC, &sc->sc_pc); | |
2370 | ||
b5dc7732 TS |
2371 | err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi); |
2372 | err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo); | |
106ec879 | 2373 | |
ead9360e | 2374 | #define restore_gp_reg(i) do { \ |
b5dc7732 | 2375 | err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \ |
106ec879 FB |
2376 | } while(0) |
2377 | restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3); | |
2378 | restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6); | |
2379 | restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9); | |
2380 | restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12); | |
2381 | restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15); | |
2382 | restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18); | |
2383 | restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21); | |
2384 | restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24); | |
2385 | restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27); | |
2386 | restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30); | |
2387 | restore_gp_reg(31); | |
388bb21a | 2388 | #undef restore_gp_reg |
106ec879 FB |
2389 | |
2390 | #if 0 | |
2391 | if (cpu_has_dsp) { | |
2392 | err |= __get_user(treg, &sc->sc_hi1); mthi1(treg); | |
2393 | err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg); | |
2394 | err |= __get_user(treg, &sc->sc_hi2); mthi2(treg); | |
2395 | err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg); | |
2396 | err |= __get_user(treg, &sc->sc_hi3); mthi3(treg); | |
2397 | err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg); | |
2398 | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); | |
2399 | } | |
388bb21a | 2400 | #ifdef CONFIG_64BIT |
106ec879 FB |
2401 | err |= __get_user(regs->hi, &sc->sc_hi[0]); |
2402 | err |= __get_user(regs->lo, &sc->sc_lo[0]); | |
2403 | if (cpu_has_dsp) { | |
2404 | err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg); | |
2405 | err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg); | |
2406 | err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg); | |
2407 | err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg); | |
2408 | err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg); | |
2409 | err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg); | |
2410 | err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); | |
2411 | } | |
388bb21a | 2412 | #endif |
106ec879 FB |
2413 | |
2414 | err |= __get_user(used_math, &sc->sc_used_math); | |
2415 | conditional_used_math(used_math); | |
2416 | ||
2417 | preempt_disable(); | |
2418 | ||
2419 | if (used_math()) { | |
2420 | /* restore fpu context if we have used it before */ | |
2421 | own_fpu(); | |
2422 | err |= restore_fp_context(sc); | |
2423 | } else { | |
2424 | /* signal handler may have used FPU. Give it up. */ | |
2425 | lose_fpu(); | |
2426 | } | |
2427 | ||
2428 | preempt_enable(); | |
2429 | #endif | |
2430 | return err; | |
2431 | } | |
2432 | /* | |
2433 | * Determine which stack to use.. | |
2434 | */ | |
579a97f7 | 2435 | static inline abi_ulong |
624f7979 | 2436 | get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size) |
106ec879 FB |
2437 | { |
2438 | unsigned long sp; | |
2439 | ||
2440 | /* Default to using normal stack */ | |
b5dc7732 | 2441 | sp = regs->active_tc.gpr[29]; |
106ec879 FB |
2442 | |
2443 | /* | |
2444 | * FPU emulator may have it's own trampoline active just | |
2445 | * above the user stack, 16-bytes before the next lowest | |
2446 | * 16 byte boundary. Try to avoid trashing it. | |
2447 | */ | |
2448 | sp -= 32; | |
2449 | ||
106ec879 | 2450 | /* This is the X/Open sanctioned signal stack switching. */ |
624f7979 | 2451 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) { |
a04e134a TS |
2452 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2453 | } | |
106ec879 | 2454 | |
579a97f7 | 2455 | return (sp - frame_size) & ~7; |
106ec879 FB |
2456 | } |
2457 | ||
579a97f7 | 2458 | /* compare linux/arch/mips/kernel/signal.c:setup_frame() */ |
624f7979 | 2459 | static void setup_frame(int sig, struct target_sigaction * ka, |
579a97f7 | 2460 | target_sigset_t *set, CPUState *regs) |
106ec879 FB |
2461 | { |
2462 | struct sigframe *frame; | |
579a97f7 | 2463 | abi_ulong frame_addr; |
106ec879 FB |
2464 | int i; |
2465 | ||
579a97f7 FB |
2466 | frame_addr = get_sigframe(ka, regs, sizeof(*frame)); |
2467 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
106ec879 FB |
2468 | goto give_sigsegv; |
2469 | ||
2470 | install_sigtramp(frame->sf_code, TARGET_NR_sigreturn); | |
2471 | ||
2472 | if(setup_sigcontext(regs, &frame->sf_sc)) | |
2473 | goto give_sigsegv; | |
2474 | ||
2475 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
2476 | if(__put_user(set->sig[i], &frame->sf_mask.sig[i])) | |
2477 | goto give_sigsegv; | |
2478 | } | |
2479 | ||
2480 | /* | |
2481 | * Arguments to signal handler: | |
2482 | * | |
2483 | * a0 = signal number | |
2484 | * a1 = 0 (should be cause) | |
2485 | * a2 = pointer to struct sigcontext | |
2486 | * | |
2487 | * $25 and PC point to the signal handler, $29 points to the | |
2488 | * struct sigframe. | |
2489 | */ | |
b5dc7732 TS |
2490 | regs->active_tc.gpr[ 4] = sig; |
2491 | regs->active_tc.gpr[ 5] = 0; | |
2492 | regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc); | |
2493 | regs->active_tc.gpr[29] = frame_addr; | |
2494 | regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code); | |
106ec879 FB |
2495 | /* The original kernel code sets CP0_EPC to the handler |
2496 | * since it returns to userland using eret | |
2497 | * we cannot do this here, and we must set PC directly */ | |
b5dc7732 | 2498 | regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler; |
579a97f7 | 2499 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 FB |
2500 | return; |
2501 | ||
2502 | give_sigsegv: | |
579a97f7 | 2503 | unlock_user_struct(frame, frame_addr, 1); |
106ec879 | 2504 | force_sig(TARGET_SIGSEGV/*, current*/); |
5fafdf24 | 2505 | return; |
106ec879 FB |
2506 | } |
2507 | ||
2508 | long do_sigreturn(CPUState *regs) | |
2509 | { | |
388bb21a | 2510 | struct sigframe *frame; |
579a97f7 | 2511 | abi_ulong frame_addr; |
388bb21a TS |
2512 | sigset_t blocked; |
2513 | target_sigset_t target_set; | |
2514 | int i; | |
106ec879 FB |
2515 | |
2516 | #if defined(DEBUG_SIGNAL) | |
388bb21a | 2517 | fprintf(stderr, "do_sigreturn\n"); |
106ec879 | 2518 | #endif |
b5dc7732 | 2519 | frame_addr = regs->active_tc.gpr[29]; |
579a97f7 | 2520 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) |
106ec879 FB |
2521 | goto badframe; |
2522 | ||
388bb21a | 2523 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { |
106ec879 FB |
2524 | if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i])) |
2525 | goto badframe; | |
388bb21a | 2526 | } |
106ec879 | 2527 | |
388bb21a TS |
2528 | target_to_host_sigset_internal(&blocked, &target_set); |
2529 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
106ec879 | 2530 | |
388bb21a | 2531 | if (restore_sigcontext(regs, &frame->sf_sc)) |
106ec879 FB |
2532 | goto badframe; |
2533 | ||
2534 | #if 0 | |
388bb21a TS |
2535 | /* |
2536 | * Don't let your children do this ... | |
2537 | */ | |
2538 | __asm__ __volatile__( | |
106ec879 FB |
2539 | "move\t$29, %0\n\t" |
2540 | "j\tsyscall_exit" | |
2541 | :/* no outputs */ | |
2542 | :"r" (®s)); | |
388bb21a | 2543 | /* Unreached */ |
106ec879 | 2544 | #endif |
3b46e624 | 2545 | |
b5dc7732 | 2546 | regs->active_tc.PC = regs->CP0_EPC; |
388bb21a | 2547 | /* I am not sure this is right, but it seems to work |
106ec879 FB |
2548 | * maybe a problem with nested signals ? */ |
2549 | regs->CP0_EPC = 0; | |
2550 | return 0; | |
2551 | ||
2552 | badframe: | |
388bb21a TS |
2553 | force_sig(TARGET_SIGSEGV/*, current*/); |
2554 | return 0; | |
106ec879 FB |
2555 | } |
2556 | ||
624f7979 | 2557 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
106ec879 FB |
2558 | target_siginfo_t *info, |
2559 | target_sigset_t *set, CPUState *env) | |
2560 | { | |
2561 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
2562 | } | |
2563 | ||
2564 | long do_rt_sigreturn(CPUState *env) | |
2565 | { | |
2566 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 2567 | return -TARGET_ENOSYS; |
106ec879 | 2568 | } |
6d5e216d | 2569 | |
c3b5bc8a TS |
2570 | #elif defined(TARGET_SH4) |
2571 | ||
2572 | /* | |
2573 | * code and data structures from linux kernel: | |
2574 | * include/asm-sh/sigcontext.h | |
2575 | * arch/sh/kernel/signal.c | |
2576 | */ | |
2577 | ||
2578 | struct target_sigcontext { | |
2579 | target_ulong oldmask; | |
2580 | ||
2581 | /* CPU registers */ | |
2582 | target_ulong sc_gregs[16]; | |
2583 | target_ulong sc_pc; | |
2584 | target_ulong sc_pr; | |
2585 | target_ulong sc_sr; | |
2586 | target_ulong sc_gbr; | |
2587 | target_ulong sc_mach; | |
2588 | target_ulong sc_macl; | |
2589 | ||
2590 | /* FPU registers */ | |
2591 | target_ulong sc_fpregs[16]; | |
2592 | target_ulong sc_xfpregs[16]; | |
2593 | unsigned int sc_fpscr; | |
2594 | unsigned int sc_fpul; | |
2595 | unsigned int sc_ownedfp; | |
2596 | }; | |
2597 | ||
2598 | struct target_sigframe | |
2599 | { | |
2600 | struct target_sigcontext sc; | |
2601 | target_ulong extramask[TARGET_NSIG_WORDS-1]; | |
2602 | uint16_t retcode[3]; | |
2603 | }; | |
2604 | ||
2605 | ||
2606 | struct target_ucontext { | |
2607 | target_ulong uc_flags; | |
2608 | struct target_ucontext *uc_link; | |
2609 | target_stack_t uc_stack; | |
2610 | struct target_sigcontext uc_mcontext; | |
2611 | target_sigset_t uc_sigmask; /* mask last for extensibility */ | |
2612 | }; | |
2613 | ||
2614 | struct target_rt_sigframe | |
2615 | { | |
2616 | struct target_siginfo info; | |
2617 | struct target_ucontext uc; | |
2618 | uint16_t retcode[3]; | |
2619 | }; | |
2620 | ||
2621 | ||
2622 | #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */ | |
2623 | #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */ | |
2624 | ||
624f7979 | 2625 | static abi_ulong get_sigframe(struct target_sigaction *ka, |
c3b5bc8a TS |
2626 | unsigned long sp, size_t frame_size) |
2627 | { | |
624f7979 | 2628 | if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) { |
c3b5bc8a TS |
2629 | sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; |
2630 | } | |
2631 | ||
2632 | return (sp - frame_size) & -8ul; | |
2633 | } | |
2634 | ||
2635 | static int setup_sigcontext(struct target_sigcontext *sc, | |
2636 | CPUState *regs, unsigned long mask) | |
2637 | { | |
2638 | int err = 0; | |
2639 | ||
2640 | #define COPY(x) err |= __put_user(regs->x, &sc->sc_##x) | |
2641 | COPY(gregs[0]); COPY(gregs[1]); | |
2642 | COPY(gregs[2]); COPY(gregs[3]); | |
2643 | COPY(gregs[4]); COPY(gregs[5]); | |
2644 | COPY(gregs[6]); COPY(gregs[7]); | |
2645 | COPY(gregs[8]); COPY(gregs[9]); | |
2646 | COPY(gregs[10]); COPY(gregs[11]); | |
2647 | COPY(gregs[12]); COPY(gregs[13]); | |
2648 | COPY(gregs[14]); COPY(gregs[15]); | |
2649 | COPY(gbr); COPY(mach); | |
2650 | COPY(macl); COPY(pr); | |
2651 | COPY(sr); COPY(pc); | |
2652 | #undef COPY | |
2653 | ||
2654 | /* todo: save FPU registers here */ | |
2655 | ||
2656 | /* non-iBCS2 extensions.. */ | |
2657 | err |= __put_user(mask, &sc->oldmask); | |
2658 | ||
2659 | return err; | |
2660 | } | |
2661 | ||
2662 | static int restore_sigcontext(struct CPUState *regs, | |
2663 | struct target_sigcontext *sc) | |
2664 | { | |
2665 | unsigned int err = 0; | |
2666 | ||
2667 | #define COPY(x) err |= __get_user(regs->x, &sc->sc_##x) | |
2668 | COPY(gregs[1]); | |
2669 | COPY(gregs[2]); COPY(gregs[3]); | |
2670 | COPY(gregs[4]); COPY(gregs[5]); | |
2671 | COPY(gregs[6]); COPY(gregs[7]); | |
2672 | COPY(gregs[8]); COPY(gregs[9]); | |
2673 | COPY(gregs[10]); COPY(gregs[11]); | |
2674 | COPY(gregs[12]); COPY(gregs[13]); | |
2675 | COPY(gregs[14]); COPY(gregs[15]); | |
2676 | COPY(gbr); COPY(mach); | |
2677 | COPY(macl); COPY(pr); | |
2678 | COPY(sr); COPY(pc); | |
2679 | #undef COPY | |
2680 | ||
2681 | /* todo: restore FPU registers here */ | |
2682 | ||
2683 | regs->tra = -1; /* disable syscall checks */ | |
2684 | return err; | |
2685 | } | |
2686 | ||
624f7979 | 2687 | static void setup_frame(int sig, struct target_sigaction *ka, |
c3b5bc8a TS |
2688 | target_sigset_t *set, CPUState *regs) |
2689 | { | |
2690 | struct target_sigframe *frame; | |
2691 | abi_ulong frame_addr; | |
2692 | int i; | |
2693 | int err = 0; | |
2694 | int signal; | |
2695 | ||
2696 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
2697 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
2698 | goto give_sigsegv; | |
2699 | ||
2700 | signal = current_exec_domain_sig(sig); | |
2701 | ||
2702 | err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); | |
2703 | ||
2704 | for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) { | |
2705 | err |= __put_user(set->sig[i + 1], &frame->extramask[i]); | |
2706 | } | |
2707 | ||
2708 | /* Set up to return from userspace. If provided, use a stub | |
2709 | already in userspace. */ | |
624f7979 PB |
2710 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
2711 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
2712 | } else { |
2713 | /* Generate return code (system call to sigreturn) */ | |
2714 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
2715 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
2716 | err |= __put_user((TARGET_NR_sigreturn), &frame->retcode[2]); | |
2717 | regs->pr = (unsigned long) frame->retcode; | |
2718 | } | |
2719 | ||
2720 | if (err) | |
2721 | goto give_sigsegv; | |
2722 | ||
2723 | /* Set up registers for signal handler */ | |
2724 | regs->gregs[15] = (unsigned long) frame; | |
2725 | regs->gregs[4] = signal; /* Arg for signal handler */ | |
2726 | regs->gregs[5] = 0; | |
2727 | regs->gregs[6] = (unsigned long) &frame->sc; | |
624f7979 | 2728 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
2729 | |
2730 | unlock_user_struct(frame, frame_addr, 1); | |
2731 | return; | |
2732 | ||
2733 | give_sigsegv: | |
2734 | unlock_user_struct(frame, frame_addr, 1); | |
2735 | force_sig(SIGSEGV); | |
2736 | } | |
2737 | ||
624f7979 | 2738 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
c3b5bc8a TS |
2739 | target_siginfo_t *info, |
2740 | target_sigset_t *set, CPUState *regs) | |
2741 | { | |
2742 | struct target_rt_sigframe *frame; | |
2743 | abi_ulong frame_addr; | |
2744 | int i; | |
2745 | int err = 0; | |
2746 | int signal; | |
2747 | ||
2748 | frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame)); | |
2749 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
2750 | goto give_sigsegv; | |
2751 | ||
2752 | signal = current_exec_domain_sig(sig); | |
2753 | ||
2754 | err |= copy_siginfo_to_user(&frame->info, info); | |
2755 | ||
2756 | /* Create the ucontext. */ | |
2757 | err |= __put_user(0, &frame->uc.uc_flags); | |
2758 | err |= __put_user(0, (unsigned long *)&frame->uc.uc_link); | |
526ccb7a | 2759 | err |= __put_user((unsigned long)target_sigaltstack_used.ss_sp, |
c3b5bc8a TS |
2760 | &frame->uc.uc_stack.ss_sp); |
2761 | err |= __put_user(sas_ss_flags(regs->gregs[15]), | |
2762 | &frame->uc.uc_stack.ss_flags); | |
2763 | err |= __put_user(target_sigaltstack_used.ss_size, | |
2764 | &frame->uc.uc_stack.ss_size); | |
2765 | err |= setup_sigcontext(&frame->uc.uc_mcontext, | |
2766 | regs, set->sig[0]); | |
2767 | for(i = 0; i < TARGET_NSIG_WORDS; i++) { | |
2768 | err |= __put_user(set->sig[i], &frame->uc.uc_sigmask.sig[i]); | |
2769 | } | |
2770 | ||
2771 | /* Set up to return from userspace. If provided, use a stub | |
2772 | already in userspace. */ | |
624f7979 PB |
2773 | if (ka->sa_flags & TARGET_SA_RESTORER) { |
2774 | regs->pr = (unsigned long) ka->sa_restorer; | |
c3b5bc8a TS |
2775 | } else { |
2776 | /* Generate return code (system call to sigreturn) */ | |
2777 | err |= __put_user(MOVW(2), &frame->retcode[0]); | |
2778 | err |= __put_user(TRAP_NOARG, &frame->retcode[1]); | |
2779 | err |= __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]); | |
2780 | regs->pr = (unsigned long) frame->retcode; | |
2781 | } | |
2782 | ||
2783 | if (err) | |
2784 | goto give_sigsegv; | |
2785 | ||
2786 | /* Set up registers for signal handler */ | |
2787 | regs->gregs[15] = (unsigned long) frame; | |
2788 | regs->gregs[4] = signal; /* Arg for signal handler */ | |
2789 | regs->gregs[5] = (unsigned long) &frame->info; | |
2790 | regs->gregs[6] = (unsigned long) &frame->uc; | |
624f7979 | 2791 | regs->pc = (unsigned long) ka->_sa_handler; |
c3b5bc8a TS |
2792 | |
2793 | unlock_user_struct(frame, frame_addr, 1); | |
2794 | return; | |
2795 | ||
2796 | give_sigsegv: | |
2797 | unlock_user_struct(frame, frame_addr, 1); | |
2798 | force_sig(SIGSEGV); | |
2799 | } | |
2800 | ||
2801 | long do_sigreturn(CPUState *regs) | |
2802 | { | |
2803 | struct target_sigframe *frame; | |
2804 | abi_ulong frame_addr; | |
2805 | sigset_t blocked; | |
2806 | target_sigset_t target_set; | |
2807 | int i; | |
2808 | int err = 0; | |
2809 | ||
2810 | #if defined(DEBUG_SIGNAL) | |
2811 | fprintf(stderr, "do_sigreturn\n"); | |
2812 | #endif | |
2813 | frame_addr = regs->gregs[15]; | |
2814 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
2815 | goto badframe; | |
2816 | ||
2817 | err |= __get_user(target_set.sig[0], &frame->sc.oldmask); | |
2818 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
2819 | err |= (__get_user(target_set.sig[i], &frame->extramask[i - 1])); | |
2820 | } | |
2821 | ||
2822 | if (err) | |
2823 | goto badframe; | |
2824 | ||
2825 | target_to_host_sigset_internal(&blocked, &target_set); | |
2826 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
2827 | ||
2828 | if (restore_sigcontext(regs, &frame->sc)) | |
2829 | goto badframe; | |
2830 | ||
2831 | unlock_user_struct(frame, frame_addr, 0); | |
2832 | return regs->gregs[0]; | |
2833 | ||
2834 | badframe: | |
2835 | unlock_user_struct(frame, frame_addr, 0); | |
2836 | force_sig(TARGET_SIGSEGV); | |
2837 | return 0; | |
2838 | } | |
2839 | ||
2840 | long do_rt_sigreturn(CPUState *regs) | |
2841 | { | |
2842 | struct target_rt_sigframe *frame; | |
2843 | abi_ulong frame_addr; | |
2844 | sigset_t blocked; | |
2845 | ||
2846 | #if defined(DEBUG_SIGNAL) | |
2847 | fprintf(stderr, "do_rt_sigreturn\n"); | |
2848 | #endif | |
2849 | frame_addr = regs->gregs[15]; | |
2850 | if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) | |
2851 | goto badframe; | |
2852 | ||
2853 | target_to_host_sigset(&blocked, &frame->uc.uc_sigmask); | |
2854 | sigprocmask(SIG_SETMASK, &blocked, NULL); | |
2855 | ||
2856 | if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) | |
2857 | goto badframe; | |
2858 | ||
2859 | if (do_sigaltstack(frame_addr + | |
2860 | offsetof(struct target_rt_sigframe, uc.uc_stack), | |
2861 | 0, get_sp_from_cpustate(regs)) == -EFAULT) | |
2862 | goto badframe; | |
2863 | ||
2864 | unlock_user_struct(frame, frame_addr, 0); | |
2865 | return regs->gregs[0]; | |
2866 | ||
2867 | badframe: | |
2868 | unlock_user_struct(frame, frame_addr, 0); | |
2869 | force_sig(TARGET_SIGSEGV); | |
2870 | return 0; | |
2871 | } | |
b6d3abda EI |
2872 | #elif defined(TARGET_CRIS) |
2873 | ||
2874 | struct target_sigcontext { | |
2875 | struct target_pt_regs regs; /* needs to be first */ | |
2876 | uint32_t oldmask; | |
2877 | uint32_t usp; /* usp before stacking this gunk on it */ | |
2878 | }; | |
2879 | ||
2880 | /* Signal frames. */ | |
2881 | struct target_signal_frame { | |
2882 | struct target_sigcontext sc; | |
2883 | uint32_t extramask[TARGET_NSIG_WORDS - 1]; | |
2884 | uint8_t retcode[8]; /* Trampoline code. */ | |
2885 | }; | |
2886 | ||
2887 | struct rt_signal_frame { | |
2888 | struct siginfo *pinfo; | |
2889 | void *puc; | |
2890 | struct siginfo info; | |
2891 | struct ucontext uc; | |
2892 | uint8_t retcode[8]; /* Trampoline code. */ | |
2893 | }; | |
2894 | ||
2895 | static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) | |
2896 | { | |
9664d928 EI |
2897 | __put_user(env->regs[0], &sc->regs.r0); |
2898 | __put_user(env->regs[1], &sc->regs.r1); | |
2899 | __put_user(env->regs[2], &sc->regs.r2); | |
2900 | __put_user(env->regs[3], &sc->regs.r3); | |
2901 | __put_user(env->regs[4], &sc->regs.r4); | |
2902 | __put_user(env->regs[5], &sc->regs.r5); | |
2903 | __put_user(env->regs[6], &sc->regs.r6); | |
2904 | __put_user(env->regs[7], &sc->regs.r7); | |
2905 | __put_user(env->regs[8], &sc->regs.r8); | |
2906 | __put_user(env->regs[9], &sc->regs.r9); | |
2907 | __put_user(env->regs[10], &sc->regs.r10); | |
2908 | __put_user(env->regs[11], &sc->regs.r11); | |
2909 | __put_user(env->regs[12], &sc->regs.r12); | |
2910 | __put_user(env->regs[13], &sc->regs.r13); | |
2911 | __put_user(env->regs[14], &sc->usp); | |
2912 | __put_user(env->regs[15], &sc->regs.acr); | |
2913 | __put_user(env->pregs[PR_MOF], &sc->regs.mof); | |
2914 | __put_user(env->pregs[PR_SRP], &sc->regs.srp); | |
2915 | __put_user(env->pc, &sc->regs.erp); | |
b6d3abda | 2916 | } |
9664d928 | 2917 | |
b6d3abda EI |
2918 | static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) |
2919 | { | |
9664d928 EI |
2920 | __get_user(env->regs[0], &sc->regs.r0); |
2921 | __get_user(env->regs[1], &sc->regs.r1); | |
2922 | __get_user(env->regs[2], &sc->regs.r2); | |
2923 | __get_user(env->regs[3], &sc->regs.r3); | |
2924 | __get_user(env->regs[4], &sc->regs.r4); | |
2925 | __get_user(env->regs[5], &sc->regs.r5); | |
2926 | __get_user(env->regs[6], &sc->regs.r6); | |
2927 | __get_user(env->regs[7], &sc->regs.r7); | |
2928 | __get_user(env->regs[8], &sc->regs.r8); | |
2929 | __get_user(env->regs[9], &sc->regs.r9); | |
2930 | __get_user(env->regs[10], &sc->regs.r10); | |
2931 | __get_user(env->regs[11], &sc->regs.r11); | |
2932 | __get_user(env->regs[12], &sc->regs.r12); | |
2933 | __get_user(env->regs[13], &sc->regs.r13); | |
2934 | __get_user(env->regs[14], &sc->usp); | |
2935 | __get_user(env->regs[15], &sc->regs.acr); | |
2936 | __get_user(env->pregs[PR_MOF], &sc->regs.mof); | |
2937 | __get_user(env->pregs[PR_SRP], &sc->regs.srp); | |
2938 | __get_user(env->pc, &sc->regs.erp); | |
2939 | } | |
2940 | ||
2941 | static abi_ulong get_sigframe(CPUState *env, int framesize) | |
2942 | { | |
2943 | abi_ulong sp; | |
b6d3abda | 2944 | /* Align the stack downwards to 4. */ |
9664d928 EI |
2945 | sp = (env->regs[R_SP] & ~3); |
2946 | return sp - framesize; | |
b6d3abda EI |
2947 | } |
2948 | ||
624f7979 | 2949 | static void setup_frame(int sig, struct target_sigaction *ka, |
b6d3abda EI |
2950 | target_sigset_t *set, CPUState *env) |
2951 | { | |
2952 | struct target_signal_frame *frame; | |
9664d928 | 2953 | abi_ulong frame_addr; |
b6d3abda EI |
2954 | int err = 0; |
2955 | int i; | |
b6d3abda | 2956 | |
9664d928 EI |
2957 | frame_addr = get_sigframe(env, sizeof *frame); |
2958 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) | |
b6d3abda EI |
2959 | goto badframe; |
2960 | ||
2961 | /* | |
2962 | * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't | |
2963 | * use this trampoline anymore but it sets it up for GDB. | |
2964 | * In QEMU, using the trampoline simplifies things a bit so we use it. | |
2965 | * | |
2966 | * This is movu.w __NR_sigreturn, r9; break 13; | |
2967 | */ | |
2968 | err |= __put_user(0x9c5f, frame->retcode+0); | |
2969 | err |= __put_user(TARGET_NR_sigreturn, | |
2970 | frame->retcode+2); | |
2971 | err |= __put_user(0xe93d, frame->retcode+4); | |
2972 | ||
2973 | /* Save the mask. */ | |
2974 | err |= __put_user(set->sig[0], &frame->sc.oldmask); | |
2975 | if (err) | |
2976 | goto badframe; | |
2977 | ||
2978 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
2979 | if (__put_user(set->sig[i], &frame->extramask[i - 1])) | |
2980 | goto badframe; | |
2981 | } | |
2982 | ||
2983 | setup_sigcontext(&frame->sc, env); | |
2984 | ||
2985 | /* Move the stack and setup the arguments for the handler. */ | |
526ccb7a | 2986 | env->regs[R_SP] = (uint32_t) (unsigned long) frame; |
b6d3abda | 2987 | env->regs[10] = sig; |
624f7979 | 2988 | env->pc = (unsigned long) ka->_sa_handler; |
b6d3abda | 2989 | /* Link SRP so the guest returns through the trampoline. */ |
526ccb7a | 2990 | env->pregs[PR_SRP] = (uint32_t) (unsigned long) &frame->retcode[0]; |
b6d3abda | 2991 | |
9664d928 | 2992 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
2993 | return; |
2994 | badframe: | |
9664d928 | 2995 | unlock_user_struct(frame, frame_addr, 1); |
b6d3abda EI |
2996 | force_sig(TARGET_SIGSEGV); |
2997 | } | |
2998 | ||
624f7979 | 2999 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
b6d3abda EI |
3000 | target_siginfo_t *info, |
3001 | target_sigset_t *set, CPUState *env) | |
3002 | { | |
3003 | fprintf(stderr, "CRIS setup_rt_frame: not implemented\n"); | |
3004 | } | |
3005 | ||
3006 | long do_sigreturn(CPUState *env) | |
3007 | { | |
3008 | struct target_signal_frame *frame; | |
9664d928 | 3009 | abi_ulong frame_addr; |
b6d3abda EI |
3010 | target_sigset_t target_set; |
3011 | sigset_t set; | |
3012 | int i; | |
3013 | ||
9664d928 | 3014 | frame_addr = env->regs[R_SP]; |
b6d3abda | 3015 | /* Make sure the guest isn't playing games. */ |
9664d928 | 3016 | if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) |
b6d3abda EI |
3017 | goto badframe; |
3018 | ||
3019 | /* Restore blocked signals */ | |
3020 | if (__get_user(target_set.sig[0], &frame->sc.oldmask)) | |
3021 | goto badframe; | |
3022 | for(i = 1; i < TARGET_NSIG_WORDS; i++) { | |
3023 | if (__get_user(target_set.sig[i], &frame->extramask[i - 1])) | |
3024 | goto badframe; | |
3025 | } | |
3026 | target_to_host_sigset_internal(&set, &target_set); | |
3027 | sigprocmask(SIG_SETMASK, &set, NULL); | |
3028 | ||
3029 | restore_sigcontext(&frame->sc, env); | |
9664d928 EI |
3030 | /* Compensate for the syscall return path advancing brk. */ |
3031 | env->pc -= 2; | |
b6d3abda | 3032 | |
9664d928 | 3033 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3034 | return env->regs[10]; |
3035 | badframe: | |
9664d928 | 3036 | unlock_user_struct(frame, frame_addr, 0); |
b6d3abda EI |
3037 | force_sig(TARGET_SIGSEGV); |
3038 | } | |
3039 | ||
3040 | long do_rt_sigreturn(CPUState *env) | |
3041 | { | |
3042 | fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n"); | |
3043 | return -TARGET_ENOSYS; | |
3044 | } | |
c3b5bc8a | 3045 | |
b346ff46 FB |
3046 | #else |
3047 | ||
624f7979 | 3048 | static void setup_frame(int sig, struct target_sigaction *ka, |
b346ff46 FB |
3049 | target_sigset_t *set, CPUState *env) |
3050 | { | |
3051 | fprintf(stderr, "setup_frame: not implemented\n"); | |
3052 | } | |
3053 | ||
624f7979 | 3054 | static void setup_rt_frame(int sig, struct target_sigaction *ka, |
b346ff46 FB |
3055 | target_siginfo_t *info, |
3056 | target_sigset_t *set, CPUState *env) | |
3057 | { | |
3058 | fprintf(stderr, "setup_rt_frame: not implemented\n"); | |
3059 | } | |
3060 | ||
3061 | long do_sigreturn(CPUState *env) | |
3062 | { | |
3063 | fprintf(stderr, "do_sigreturn: not implemented\n"); | |
f8b0aa25 | 3064 | return -TARGET_ENOSYS; |
b346ff46 FB |
3065 | } |
3066 | ||
3067 | long do_rt_sigreturn(CPUState *env) | |
3068 | { | |
3069 | fprintf(stderr, "do_rt_sigreturn: not implemented\n"); | |
f8b0aa25 | 3070 | return -TARGET_ENOSYS; |
b346ff46 FB |
3071 | } |
3072 | ||
66fb9763 FB |
3073 | #endif |
3074 | ||
624f7979 | 3075 | void process_pending_signals(CPUState *cpu_env) |
66fb9763 FB |
3076 | { |
3077 | int sig; | |
992f48a0 | 3078 | abi_ulong handler; |
9de5e440 FB |
3079 | sigset_t set, old_set; |
3080 | target_sigset_t target_old_set; | |
624f7979 PB |
3081 | struct emulated_sigtable *k; |
3082 | struct target_sigaction *sa; | |
66fb9763 | 3083 | struct sigqueue *q; |
624f7979 | 3084 | TaskState *ts = cpu_env->opaque; |
3b46e624 | 3085 | |
624f7979 | 3086 | if (!ts->signal_pending) |
31e31b8a FB |
3087 | return; |
3088 | ||
624f7979 PB |
3089 | /* FIXME: This is not threadsafe. */ |
3090 | k = ts->sigtab; | |
66fb9763 FB |
3091 | for(sig = 1; sig <= TARGET_NSIG; sig++) { |
3092 | if (k->pending) | |
31e31b8a | 3093 | goto handle_signal; |
66fb9763 | 3094 | k++; |
31e31b8a FB |
3095 | } |
3096 | /* if no signal is pending, just return */ | |
624f7979 | 3097 | ts->signal_pending = 0; |
31e31b8a | 3098 | return; |
66fb9763 | 3099 | |
31e31b8a | 3100 | handle_signal: |
66fb9763 | 3101 | #ifdef DEBUG_SIGNAL |
bc8a22cc | 3102 | fprintf(stderr, "qemu: process signal %d\n", sig); |
66fb9763 FB |
3103 | #endif |
3104 | /* dequeue signal */ | |
3105 | q = k->first; | |
3106 | k->first = q->next; | |
3107 | if (!k->first) | |
3108 | k->pending = 0; | |
3b46e624 | 3109 | |
1fddef4b FB |
3110 | sig = gdb_handlesig (cpu_env, sig); |
3111 | if (!sig) { | |
3112 | fprintf (stderr, "Lost signal\n"); | |
3113 | abort(); | |
3114 | } | |
66fb9763 | 3115 | |
624f7979 PB |
3116 | sa = &sigact_table[sig - 1]; |
3117 | handler = sa->_sa_handler; | |
66fb9763 FB |
3118 | if (handler == TARGET_SIG_DFL) { |
3119 | /* default handler : ignore some signal. The other are fatal */ | |
5fafdf24 TS |
3120 | if (sig != TARGET_SIGCHLD && |
3121 | sig != TARGET_SIGURG && | |
66fb9763 FB |
3122 | sig != TARGET_SIGWINCH) { |
3123 | force_sig(sig); | |
3124 | } | |
3125 | } else if (handler == TARGET_SIG_IGN) { | |
3126 | /* ignore sig */ | |
3127 | } else if (handler == TARGET_SIG_ERR) { | |
3128 | force_sig(sig); | |
3129 | } else { | |
9de5e440 | 3130 | /* compute the blocked signals during the handler execution */ |
624f7979 | 3131 | target_to_host_sigset(&set, &sa->sa_mask); |
9de5e440 FB |
3132 | /* SA_NODEFER indicates that the current signal should not be |
3133 | blocked during the handler */ | |
624f7979 | 3134 | if (!(sa->sa_flags & TARGET_SA_NODEFER)) |
9de5e440 | 3135 | sigaddset(&set, target_to_host_signal(sig)); |
3b46e624 | 3136 | |
9de5e440 FB |
3137 | /* block signals in the handler using Linux */ |
3138 | sigprocmask(SIG_BLOCK, &set, &old_set); | |
3139 | /* save the previous blocked signal state to restore it at the | |
3140 | end of the signal execution (see do_sigreturn) */ | |
9231944d | 3141 | host_to_target_sigset_internal(&target_old_set, &old_set); |
9de5e440 | 3142 | |
bc8a22cc | 3143 | /* if the CPU is in VM86 mode, we restore the 32 bit values */ |
84409ddb | 3144 | #if defined(TARGET_I386) && !defined(TARGET_X86_64) |
bc8a22cc FB |
3145 | { |
3146 | CPUX86State *env = cpu_env; | |
3147 | if (env->eflags & VM_MASK) | |
3148 | save_v86_state(env); | |
3149 | } | |
3150 | #endif | |
9de5e440 | 3151 | /* prepare the stack frame of the virtual CPU */ |
624f7979 PB |
3152 | if (sa->sa_flags & TARGET_SA_SIGINFO) |
3153 | setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env); | |
66fb9763 | 3154 | else |
624f7979 PB |
3155 | setup_frame(sig, sa, &target_old_set, cpu_env); |
3156 | if (sa->sa_flags & TARGET_SA_RESETHAND) | |
3157 | sa->_sa_handler = TARGET_SIG_DFL; | |
31e31b8a | 3158 | } |
66fb9763 | 3159 | if (q != &k->info) |
624f7979 | 3160 | free_sigqueue(cpu_env, q); |
66fb9763 | 3161 | } |