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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
8167ee88 17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
31e31b8a
FB		 18 */
19#include <stdlib.h>
20#include <stdio.h>
66fb9763 21#include <string.h>
31e31b8a 22#include <stdarg.h>
2677e107 23#include <unistd.h>
66fb9763 24#include <errno.h>
603e4fd7 25#include <assert.h>
31e31b8a 26#include <sys/ucontext.h>
edf8e2af 27#include <sys/resource.h>
31e31b8a 28
3ef693a0 29#include "qemu.h"
7d99a001 30#include "qemu-common.h"
992f48a0 31#include "target_signal.h"
66fb9763
FB		 32
33//#define DEBUG_SIGNAL
34
249c4c32 35static struct target_sigaltstack target_sigaltstack_used = {
a04e134a
TS		 36 .ss_sp = 0,
37 .ss_size = 0,
38 .ss_flags = TARGET_SS_DISABLE,
39};
40
624f7979 41static struct target_sigaction sigact_table[TARGET_NSIG];
31e31b8a 42
5fafdf24 43static void host_signal_handler(int host_signum, siginfo_t *info,
66fb9763
FB		 44 void *puc);
45
3ca05588 46static uint8_t host_to_target_signal_table[_NSIG] = {
9e5f5284
FB		 47 [SIGHUP] = TARGET_SIGHUP,
48 [SIGINT] = TARGET_SIGINT,
49 [SIGQUIT] = TARGET_SIGQUIT,
50 [SIGILL] = TARGET_SIGILL,
51 [SIGTRAP] = TARGET_SIGTRAP,
52 [SIGABRT] = TARGET_SIGABRT,
01e3b763 53/* [SIGIOT] = TARGET_SIGIOT,*/
9e5f5284
FB		 54 [SIGBUS] = TARGET_SIGBUS,
55 [SIGFPE] = TARGET_SIGFPE,
56 [SIGKILL] = TARGET_SIGKILL,
57 [SIGUSR1] = TARGET_SIGUSR1,
58 [SIGSEGV] = TARGET_SIGSEGV,
59 [SIGUSR2] = TARGET_SIGUSR2,
60 [SIGPIPE] = TARGET_SIGPIPE,
61 [SIGALRM] = TARGET_SIGALRM,
62 [SIGTERM] = TARGET_SIGTERM,
63#ifdef SIGSTKFLT
64 [SIGSTKFLT] = TARGET_SIGSTKFLT,
65#endif
66 [SIGCHLD] = TARGET_SIGCHLD,
67 [SIGCONT] = TARGET_SIGCONT,
68 [SIGSTOP] = TARGET_SIGSTOP,
69 [SIGTSTP] = TARGET_SIGTSTP,
70 [SIGTTIN] = TARGET_SIGTTIN,
71 [SIGTTOU] = TARGET_SIGTTOU,
72 [SIGURG] = TARGET_SIGURG,
73 [SIGXCPU] = TARGET_SIGXCPU,
74 [SIGXFSZ] = TARGET_SIGXFSZ,
75 [SIGVTALRM] = TARGET_SIGVTALRM,
76 [SIGPROF] = TARGET_SIGPROF,
77 [SIGWINCH] = TARGET_SIGWINCH,
78 [SIGIO] = TARGET_SIGIO,
79 [SIGPWR] = TARGET_SIGPWR,
80 [SIGSYS] = TARGET_SIGSYS,
81 /* next signals stay the same */
624f7979 82 /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with
b4916d7b 83 host libpthread signals. This assumes no one actually uses SIGRTMAX :-/
624f7979
PB		 84 To fix this properly we need to do manual signal delivery multiplexed
85 over a single host signal. */
86 [__SIGRTMIN] = __SIGRTMAX,
87 [__SIGRTMAX] = __SIGRTMIN,
9e5f5284 88};
3ca05588 89static uint8_t target_to_host_signal_table[_NSIG];
9e5f5284 90
a04e134a
TS		 91static inline int on_sig_stack(unsigned long sp)
92{
93 return (sp - target_sigaltstack_used.ss_sp
94 < target_sigaltstack_used.ss_size);
95}
96
97static inline int sas_ss_flags(unsigned long sp)
98{
99 return (target_sigaltstack_used.ss_size == 0 ? SS_DISABLE
100 : on_sig_stack(sp) ? SS_ONSTACK : 0);
101}
102
1d9d8b55 103int host_to_target_signal(int sig)
31e31b8a 104{
167c50d8 105 if (sig < 0 || sig >= _NSIG)
4cb05961 106 return sig;
9e5f5284 107 return host_to_target_signal_table[sig];
31e31b8a
FB		 108}
109
4cb05961 110int target_to_host_signal(int sig)
31e31b8a 111{
167c50d8 112 if (sig < 0 || sig >= _NSIG)
4cb05961 113 return sig;
9e5f5284 114 return target_to_host_signal_table[sig];
31e31b8a
FB		 115}
116
c227f099 117static inline void target_sigemptyset(target_sigset_t *set)
f5545b5c
PB		 118{
119 memset(set, 0, sizeof(*set));
120}
121
c227f099 122static inline void target_sigaddset(target_sigset_t *set, int signum)
f5545b5c
PB		 123{
124 signum--;
125 abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW);
126 set->sig[signum / TARGET_NSIG_BPW] |= mask;
127}
128
c227f099 129static inline int target_sigismember(const target_sigset_t *set, int signum)
f5545b5c
PB		 130{
131 signum--;
132 abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW);
133 return ((set->sig[signum / TARGET_NSIG_BPW] & mask) != 0);
134}
135
c227f099 136static void host_to_target_sigset_internal(target_sigset_t *d,
9231944d 137 const sigset_t *s)
66fb9763
FB		 138{
139 int i;
f5545b5c
PB		 140 target_sigemptyset(d);
141 for (i = 1; i <= TARGET_NSIG; i++) {
142 if (sigismember(s, i)) {
143 target_sigaddset(d, host_to_target_signal(i));
144 }
66fb9763
FB		 145 }
146}
147
c227f099 148void host_to_target_sigset(target_sigset_t *d, const sigset_t *s)
9231944d 149{
c227f099 150 target_sigset_t d1;
9231944d
FB		 151 int i;
152
153 host_to_target_sigset_internal(&d1, s);
154 for(i = 0;i < TARGET_NSIG_WORDS; i++)
cbb21eed 155 d->sig[i] = tswapal(d1.sig[i]);
9231944d
FB		 156}
157
8fcd3692 158static void target_to_host_sigset_internal(sigset_t *d,
c227f099 159 const target_sigset_t *s)
66fb9763
FB		 160{
161 int i;
f5545b5c
PB		 162 sigemptyset(d);
163 for (i = 1; i <= TARGET_NSIG; i++) {
164 if (target_sigismember(s, i)) {
165 sigaddset(d, target_to_host_signal(i));
166 }
167 }
66fb9763
FB		 168}
169
c227f099 170void target_to_host_sigset(sigset_t *d, const target_sigset_t *s)
9231944d 171{
c227f099 172 target_sigset_t s1;
9231944d
FB		 173 int i;
174
175 for(i = 0;i < TARGET_NSIG_WORDS; i++)
cbb21eed 176 s1.sig[i] = tswapal(s->sig[i]);
9231944d
FB		 177 target_to_host_sigset_internal(d, &s1);
178}
3b46e624 179
992f48a0 180void host_to_target_old_sigset(abi_ulong *old_sigset,
66fb9763
FB		 181 const sigset_t *sigset)
182{
c227f099 183 target_sigset_t d;
9e5f5284
FB		 184 host_to_target_sigset(&d, sigset);
185 *old_sigset = d.sig[0];
66fb9763
FB		 186}
187
5fafdf24 188void target_to_host_old_sigset(sigset_t *sigset,
992f48a0 189 const abi_ulong *old_sigset)
66fb9763 190{
c227f099 191 target_sigset_t d;
9e5f5284
FB		 192 int i;
193
194 d.sig[0] = *old_sigset;
195 for(i = 1;i < TARGET_NSIG_WORDS; i++)
196 d.sig[i] = 0;
197 target_to_host_sigset(sigset, &d);
66fb9763
FB		 198}
199
1c275925
AB		 200/* Wrapper for sigprocmask function
201 * Emulates a sigprocmask in a safe way for the guest. Note that set and oldset
202 * are host signal set, not guest ones. This wraps the sigprocmask host calls
203 * that should be protected (calls originated from guest)
204 */
205int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
206{
a7ec0f98
PM		 207 int ret;
208 sigset_t val;
209 sigset_t *temp = NULL;
210 CPUState *cpu = thread_cpu;
211 TaskState *ts = (TaskState *)cpu->opaque;
212 bool segv_was_blocked = ts->sigsegv_blocked;
213
214 if (set) {
215 bool has_sigsegv = sigismember(set, SIGSEGV);
216 val = *set;
217 temp = &val;
218
219 sigdelset(temp, SIGSEGV);
220
221 switch (how) {
222 case SIG_BLOCK:
223 if (has_sigsegv) {
224 ts->sigsegv_blocked = true;
225 }
226 break;
227 case SIG_UNBLOCK:
228 if (has_sigsegv) {
229 ts->sigsegv_blocked = false;
230 }
231 break;
232 case SIG_SETMASK:
233 ts->sigsegv_blocked = has_sigsegv;
234 break;
235 default:
236 g_assert_not_reached();
237 }
238 }
239
240 ret = sigprocmask(how, temp, oldset);
241
242 if (oldset && segv_was_blocked) {
243 sigaddset(oldset, SIGSEGV);
244 }
245
246 return ret;
1c275925
AB		 247}
248
9de5e440
FB		 249/* siginfo conversion */
250
c227f099 251static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo,
9de5e440 252 const siginfo_t *info)
66fb9763 253{
a05c6409 254 int sig = host_to_target_signal(info->si_signo);
9de5e440
FB		 255 tinfo->si_signo = sig;
256 tinfo->si_errno = 0;
afd7cd92 257 tinfo->si_code = info->si_code;
a05c6409
RH		 258
259 if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV
260 || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) {
261 /* Should never come here, but who knows. The information for
262 the target is irrelevant. */
9de5e440 263 tinfo->_sifields._sigfault._addr = 0;
a05c6409
RH		 264 } else if (sig == TARGET_SIGIO) {
265 tinfo->_sifields._sigpoll._band = info->si_band;
7f7f7c84 266 tinfo->_sifields._sigpoll._fd = info->si_fd;
a05c6409
RH		 267 } else if (sig == TARGET_SIGCHLD) {
268 tinfo->_sifields._sigchld._pid = info->si_pid;
269 tinfo->_sifields._sigchld._uid = info->si_uid;
270 tinfo->_sifields._sigchld._status
271 = host_to_target_waitstatus(info->si_status);
272 tinfo->_sifields._sigchld._utime = info->si_utime;
273 tinfo->_sifields._sigchld._stime = info->si_stime;
9de5e440
FB		 274 } else if (sig >= TARGET_SIGRTMIN) {
275 tinfo->_sifields._rt._pid = info->si_pid;
276 tinfo->_sifields._rt._uid = info->si_uid;
277 /* XXX: potential problem if 64 bit */
a05c6409
RH		 278 tinfo->_sifields._rt._sigval.sival_ptr
279 = (abi_ulong)(unsigned long)info->si_value.sival_ptr;
9de5e440
FB		 280 }
281}
282
c227f099
AL		 283static void tswap_siginfo(target_siginfo_t *tinfo,
284 const target_siginfo_t *info)
9de5e440 285{
a05c6409 286 int sig = info->si_signo;
9de5e440 287 tinfo->si_signo = tswap32(sig);
66fb9763
FB		 288 tinfo->si_errno = tswap32(info->si_errno);
289 tinfo->si_code = tswap32(info->si_code);
a05c6409
RH		 290
291 if (sig == TARGET_SIGILL || sig == TARGET_SIGFPE || sig == TARGET_SIGSEGV
292 || sig == TARGET_SIGBUS || sig == TARGET_SIGTRAP) {
293 tinfo->_sifields._sigfault._addr
294 = tswapal(info->_sifields._sigfault._addr);
295 } else if (sig == TARGET_SIGIO) {
296 tinfo->_sifields._sigpoll._band
297 = tswap32(info->_sifields._sigpoll._band);
298 tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd);
299 } else if (sig == TARGET_SIGCHLD) {
300 tinfo->_sifields._sigchld._pid
301 = tswap32(info->_sifields._sigchld._pid);
302 tinfo->_sifields._sigchld._uid
303 = tswap32(info->_sifields._sigchld._uid);
304 tinfo->_sifields._sigchld._status
305 = tswap32(info->_sifields._sigchld._status);
306 tinfo->_sifields._sigchld._utime
307 = tswapal(info->_sifields._sigchld._utime);
308 tinfo->_sifields._sigchld._stime
309 = tswapal(info->_sifields._sigchld._stime);
9de5e440
FB		 310 } else if (sig >= TARGET_SIGRTMIN) {
311 tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid);
312 tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid);
a05c6409
RH		 313 tinfo->_sifields._rt._sigval.sival_ptr
314 = tswapal(info->_sifields._rt._sigval.sival_ptr);
9de5e440
FB		 315 }
316}
317
318
c227f099 319void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info)
9de5e440
FB		 320{
321 host_to_target_siginfo_noswap(tinfo, info);
322 tswap_siginfo(tinfo, tinfo);
66fb9763
FB		 323}
324
9de5e440 325/* XXX: we support only POSIX RT signals are used. */
aa1f17c1 326/* XXX: find a solution for 64 bit (additional malloced data is needed) */
c227f099 327void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo)
66fb9763
FB		 328{
329 info->si_signo = tswap32(tinfo->si_signo);
330 info->si_errno = tswap32(tinfo->si_errno);
331 info->si_code = tswap32(tinfo->si_code);
9de5e440
FB		 332 info->si_pid = tswap32(tinfo->_sifields._rt._pid);
333 info->si_uid = tswap32(tinfo->_sifields._rt._uid);
5fafdf24 334 info->si_value.sival_ptr =
cbb21eed 335 (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr);
66fb9763
FB		 336}
337
ca587a8e
AJ		 338static int fatal_signal (int sig)
339{
340 switch (sig) {
341 case TARGET_SIGCHLD:
342 case TARGET_SIGURG:
343 case TARGET_SIGWINCH:
344 /* Ignored by default. */
345 return 0;
346 case TARGET_SIGCONT:
347 case TARGET_SIGSTOP:
348 case TARGET_SIGTSTP:
349 case TARGET_SIGTTIN:
350 case TARGET_SIGTTOU:
351 /* Job control signals. */
352 return 0;
353 default:
354 return 1;
355 }
356}
357
edf8e2af
MW		 358/* returns 1 if given signal should dump core if not handled */
359static int core_dump_signal(int sig)
360{
361 switch (sig) {
362 case TARGET_SIGABRT:
363 case TARGET_SIGFPE:
364 case TARGET_SIGILL:
365 case TARGET_SIGQUIT:
366 case TARGET_SIGSEGV:
367 case TARGET_SIGTRAP:
368 case TARGET_SIGBUS:
369 return (1);
370 default:
371 return (0);
372 }
373}
374
31e31b8a
FB		 375void signal_init(void)
376{
377 struct sigaction act;
624f7979 378 struct sigaction oact;
9e5f5284 379 int i, j;
624f7979 380 int host_sig;
31e31b8a 381
9e5f5284 382 /* generate signal conversion tables */
3ca05588 383 for(i = 1; i < _NSIG; i++) {
9e5f5284
FB		 384 if (host_to_target_signal_table[i] == 0)
385 host_to_target_signal_table[i] = i;
386 }
3ca05588 387 for(i = 1; i < _NSIG; i++) {
9e5f5284
FB		 388 j = host_to_target_signal_table[i];
389 target_to_host_signal_table[j] = i;
390 }
3b46e624 391
9de5e440
FB		 392 /* set all host signal handlers. ALL signals are blocked during
393 the handlers to serialize them. */
624f7979
PB		 394 memset(sigact_table, 0, sizeof(sigact_table));
395
9de5e440 396 sigfillset(&act.sa_mask);
31e31b8a
FB		 397 act.sa_flags = SA_SIGINFO;
398 act.sa_sigaction = host_signal_handler;
624f7979
PB		 399 for(i = 1; i <= TARGET_NSIG; i++) {
400 host_sig = target_to_host_signal(i);
401 sigaction(host_sig, NULL, &oact);
402 if (oact.sa_sigaction == (void *)SIG_IGN) {
403 sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN;
404 } else if (oact.sa_sigaction == (void *)SIG_DFL) {
405 sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL;
406 }
407 /* If there's already a handler installed then something has
408 gone horribly wrong, so don't even try to handle that case. */
ca587a8e
AJ		 409 /* Install some handlers for our own use. We need at least
410 SIGSEGV and SIGBUS, to detect exceptions. We can not just
411 trap all signals because it affects syscall interrupt
412 behavior. But do trap all default-fatal signals. */
413 if (fatal_signal (i))
624f7979 414 sigaction(host_sig, &act, NULL);
31e31b8a 415 }
66fb9763
FB		 416}
417
418/* signal queue handling */
419
9349b4f9 420static inline struct sigqueue *alloc_sigqueue(CPUArchState *env)
66fb9763 421{
0429a971
AF		 422 CPUState *cpu = ENV_GET_CPU(env);
423 TaskState *ts = cpu->opaque;
624f7979 424 struct sigqueue *q = ts->first_free;
66fb9763
FB		 425 if (!q)
426 return NULL;
624f7979 427 ts->first_free = q->next;
66fb9763 428 return q;
31e31b8a
FB		 429}
430
9349b4f9 431static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q)
66fb9763 432{
0429a971
AF		 433 CPUState *cpu = ENV_GET_CPU(env);
434 TaskState *ts = cpu->opaque;
435
624f7979
PB		 436 q->next = ts->first_free;
437 ts->first_free = q;
66fb9763
FB		 438}
439
9de5e440 440/* abort execution with signal */
66393fb9 441static void QEMU_NORETURN force_sig(int target_sig)
66fb9763 442{
0429a971
AF		 443 CPUState *cpu = thread_cpu;
444 CPUArchState *env = cpu->env_ptr;
445 TaskState *ts = (TaskState *)cpu->opaque;
edf8e2af 446 int host_sig, core_dumped = 0;
603e4fd7 447 struct sigaction act;
66393fb9 448 host_sig = target_to_host_signal(target_sig);
a2247f8e 449 gdb_signalled(env, target_sig);
603e4fd7 450
edf8e2af 451 /* dump core if supported by target binary format */
66393fb9 452 if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) {
edf8e2af
MW		 453 stop_all_tasks();
454 core_dumped =
a2247f8e 455 ((*ts->bprm->core_dump)(target_sig, env) == 0);
edf8e2af
MW		 456 }
457 if (core_dumped) {
458 /* we already dumped the core of target process, we don't want
459 * a coredump of qemu itself */
460 struct rlimit nodump;
461 getrlimit(RLIMIT_CORE, &nodump);
462 nodump.rlim_cur=0;
463 setrlimit(RLIMIT_CORE, &nodump);
464 (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n",
66393fb9 465 target_sig, strsignal(host_sig), "core dumped" );
edf8e2af
MW		 466 }
467
0c58751c 468 /* The proper exit code for dying from an uncaught signal is
603e4fd7
AJ		 469 * -<signal>. The kernel doesn't allow exit() or _exit() to pass
470 * a negative value. To get the proper exit code we need to
471 * actually die from an uncaught signal. Here the default signal
472 * handler is installed, we send ourself a signal and we wait for
473 * it to arrive. */
474 sigfillset(&act.sa_mask);
475 act.sa_handler = SIG_DFL;
3a5d30bf 476 act.sa_flags = 0;
603e4fd7
AJ		 477 sigaction(host_sig, &act, NULL);
478
479 /* For some reason raise(host_sig) doesn't send the signal when
480 * statically linked on x86-64. */
481 kill(getpid(), host_sig);
482
483 /* Make sure the signal isn't masked (just reuse the mask inside
484 of act) */
485 sigdelset(&act.sa_mask, host_sig);
486 sigsuspend(&act.sa_mask);
487
488 /* unreachable */
a6c6f76c 489 abort();
66fb9763
FB		 490}
491
9de5e440
FB		 492/* queue a signal so that it will be send to the virtual CPU as soon
493 as possible */
9349b4f9 494int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info)
31e31b8a 495{
0429a971
AF		 496 CPUState *cpu = ENV_GET_CPU(env);
497 TaskState *ts = cpu->opaque;
624f7979 498 struct emulated_sigtable *k;
9de5e440 499 struct sigqueue *q, **pq;
992f48a0 500 abi_ulong handler;
ca587a8e 501 int queue;
66fb9763 502
9de5e440 503#if defined(DEBUG_SIGNAL)
5fafdf24 504 fprintf(stderr, "queue_signal: sig=%d\n",
9de5e440 505 sig);
66fb9763 506#endif
624f7979 507 k = &ts->sigtab[sig - 1];
ca587a8e 508 queue = gdb_queuesig ();
624f7979 509 handler = sigact_table[sig - 1]._sa_handler;
a7ec0f98
PM		 510
511 if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) {
512 /* Guest has blocked SIGSEGV but we got one anyway. Assume this
513 * is a forced SIGSEGV (ie one the kernel handles via force_sig_info
514 * because it got a real MMU fault). A blocked SIGSEGV in that
515 * situation is treated as if using the default handler. This is
516 * not correct if some other process has randomly sent us a SIGSEGV
517 * via kill(), but that is not easy to distinguish at this point,
518 * so we assume it doesn't happen.
519 */
520 handler = TARGET_SIG_DFL;
521 }
522
ca587a8e 523 if (!queue && handler == TARGET_SIG_DFL) {
60b19691
TS		 524 if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
525 kill(getpid(),SIGSTOP);
526 return 0;
527 } else
66fb9763 528 /* default handler : ignore some signal. The other are fatal */
5fafdf24
TS		 529 if (sig != TARGET_SIGCHLD &&
530 sig != TARGET_SIGURG &&
60b19691
TS		 531 sig != TARGET_SIGWINCH &&
532 sig != TARGET_SIGCONT) {
66fb9763 533 force_sig(sig);
9de5e440
FB		 534 } else {
535 return 0; /* indicate ignored */
66fb9763 536 }
ca587a8e 537 } else if (!queue && handler == TARGET_SIG_IGN) {
66fb9763 538 /* ignore signal */
9de5e440 539 return 0;
ca587a8e 540 } else if (!queue && handler == TARGET_SIG_ERR) {
66fb9763
FB		 541 force_sig(sig);
542 } else {
9de5e440
FB		 543 pq = &k->first;
544 if (sig < TARGET_SIGRTMIN) {
545 /* if non real time signal, we queue exactly one signal */
546 if (!k->pending)
547 q = &k->info;
548 else
549 return 0;
550 } else {
551 if (!k->pending) {
552 /* first signal */
553 q = &k->info;
554 } else {
624f7979 555 q = alloc_sigqueue(env);
9de5e440
FB		 556 if (!q)
557 return -EAGAIN;
558 while (*pq != NULL)
559 pq = &(*pq)->next;
560 }
561 }
562 *pq = q;
563 q->info = *info;
564 q->next = NULL;
565 k->pending = 1;
566 /* signal that a new signal is pending */
624f7979 567 ts->signal_pending = 1;
9de5e440
FB		 568 return 1; /* indicates that the signal was queued */
569 }
570}
571
5fafdf24 572static void host_signal_handler(int host_signum, siginfo_t *info,
9de5e440
FB		 573 void *puc)
574{
a2247f8e 575 CPUArchState *env = thread_cpu->env_ptr;
9de5e440 576 int sig;
c227f099 577 target_siginfo_t tinfo;
9de5e440
FB		 578
579 /* the CPU emulator uses some host signals to detect exceptions,
eaa449b9 580 we forward to it some signals */
ca587a8e 581 if ((host_signum == SIGSEGV || host_signum == SIGBUS)
eaa449b9 582 && info->si_code > 0) {
b346ff46 583 if (cpu_signal_handler(host_signum, info, puc))
9de5e440
FB		 584 return;
585 }
586
587 /* get target signal number */
588 sig = host_to_target_signal(host_signum);
589 if (sig < 1 || sig > TARGET_NSIG)
590 return;
591#if defined(DEBUG_SIGNAL)
bc8a22cc 592 fprintf(stderr, "qemu: got signal %d\n", sig);
9de5e440
FB		 593#endif
594 host_to_target_siginfo_noswap(&tinfo, info);
a2247f8e 595 if (queue_signal(env, sig, &tinfo) == 1) {
9de5e440 596 /* interrupt the virtual CPU as soon as possible */
a2247f8e 597 cpu_exit(thread_cpu);
66fb9763
FB		 598 }
599}
600
0da46a6e 601/* do_sigaltstack() returns target values and errnos. */
579a97f7
FB		 602/* compare linux/kernel/signal.c:do_sigaltstack() */
603abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp)
a04e134a
TS		 604{
605 int ret;
606 struct target_sigaltstack oss;
607
608 /* XXX: test errors */
579a97f7 609 if(uoss_addr)
a04e134a
TS		 610 {
611 __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp);
612 __put_user(target_sigaltstack_used.ss_size, &oss.ss_size);
613 __put_user(sas_ss_flags(sp), &oss.ss_flags);
614 }
615
579a97f7 616 if(uss_addr)
a04e134a 617 {
579a97f7
FB		 618 struct target_sigaltstack *uss;
619 struct target_sigaltstack ss;
a04e134a 620
0da46a6e 621 ret = -TARGET_EFAULT;
9eeb8306 622 if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1)) {
a04e134a 623 goto out;
9eeb8306
RV		 624 }
625 __get_user(ss.ss_sp, &uss->ss_sp);
626 __get_user(ss.ss_size, &uss->ss_size);
627 __get_user(ss.ss_flags, &uss->ss_flags);
579a97f7 628 unlock_user_struct(uss, uss_addr, 0);
a04e134a 629
0da46a6e 630 ret = -TARGET_EPERM;
a04e134a
TS		 631 if (on_sig_stack(sp))
632 goto out;
633
0da46a6e 634 ret = -TARGET_EINVAL;
a04e134a
TS		 635 if (ss.ss_flags != TARGET_SS_DISABLE
636 && ss.ss_flags != TARGET_SS_ONSTACK
637 && ss.ss_flags != 0)
638 goto out;
639
640 if (ss.ss_flags == TARGET_SS_DISABLE) {
641 ss.ss_size = 0;
642 ss.ss_sp = 0;
643 } else {
0da46a6e 644 ret = -TARGET_ENOMEM;
a04e134a
TS		 645 if (ss.ss_size < MINSIGSTKSZ)
646 goto out;
647 }
648
649 target_sigaltstack_used.ss_sp = ss.ss_sp;
650 target_sigaltstack_used.ss_size = ss.ss_size;
651 }
652
579a97f7 653 if (uoss_addr) {
0da46a6e 654 ret = -TARGET_EFAULT;
579a97f7 655 if (copy_to_user(uoss_addr, &oss, sizeof(oss)))
a04e134a 656 goto out;
a04e134a
TS		 657 }
658
659 ret = 0;
660out:
661 return ret;
662}
663
0da46a6e 664/* do_sigaction() return host values and errnos */
66fb9763
FB		 665int do_sigaction(int sig, const struct target_sigaction *act,
666 struct target_sigaction *oact)
667{
624f7979 668 struct target_sigaction *k;
773b93ee
FB		 669 struct sigaction act1;
670 int host_sig;
0da46a6e 671 int ret = 0;
66fb9763 672
2a913eb1 673 if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)
66fb9763
FB		 674 return -EINVAL;
675 k = &sigact_table[sig - 1];
773b93ee 676#if defined(DEBUG_SIGNAL)
0bf9e31a
BS		 677 fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n",
678 sig, act, oact);
66fb9763
FB		 679#endif
680 if (oact) {
d2565875
RH		 681 __put_user(k->_sa_handler, &oact->_sa_handler);
682 __put_user(k->sa_flags, &oact->sa_flags);
388bb21a 683#if !defined(TARGET_MIPS)
d2565875 684 __put_user(k->sa_restorer, &oact->sa_restorer);
388bb21a 685#endif
d2565875 686 /* Not swapped. */
624f7979 687 oact->sa_mask = k->sa_mask;
66fb9763
FB		 688 }
689 if (act) {
624f7979 690 /* FIXME: This is not threadsafe. */
d2565875
RH		 691 __get_user(k->_sa_handler, &act->_sa_handler);
692 __get_user(k->sa_flags, &act->sa_flags);
388bb21a 693#if !defined(TARGET_MIPS)
d2565875 694 __get_user(k->sa_restorer, &act->sa_restorer);
388bb21a 695#endif
d2565875 696 /* To be swapped in target_to_host_sigset. */
624f7979 697 k->sa_mask = act->sa_mask;
773b93ee
FB		 698
699 /* we update the host linux signal state */
700 host_sig = target_to_host_signal(sig);
701 if (host_sig != SIGSEGV && host_sig != SIGBUS) {
702 sigfillset(&act1.sa_mask);
703 act1.sa_flags = SA_SIGINFO;
624f7979 704 if (k->sa_flags & TARGET_SA_RESTART)
773b93ee
FB		 705 act1.sa_flags |= SA_RESTART;
706 /* NOTE: it is important to update the host kernel signal
707 ignore state to avoid getting unexpected interrupted
708 syscalls */
624f7979 709 if (k->_sa_handler == TARGET_SIG_IGN) {
773b93ee 710 act1.sa_sigaction = (void *)SIG_IGN;
624f7979 711 } else if (k->_sa_handler == TARGET_SIG_DFL) {
ca587a8e
AJ		 712 if (fatal_signal (sig))
713 act1.sa_sigaction = host_signal_handler;
714 else
715 act1.sa_sigaction = (void *)SIG_DFL;
773b93ee
FB		 716 } else {
717 act1.sa_sigaction = host_signal_handler;
718 }
0da46a6e 719 ret = sigaction(host_sig, &act1, NULL);
773b93ee 720 }
66fb9763 721 }
0da46a6e 722 return ret;
66fb9763
FB		 723}
724
b0fd8d18 725static inline void copy_siginfo_to_user(target_siginfo_t *tinfo,
c227f099 726 const target_siginfo_t *info)
43fff238
FB		 727{
728 tswap_siginfo(tinfo, info);
43fff238
FB		 729}
730
c3b5bc8a
TS		 731static inline int current_exec_domain_sig(int sig)
732{
733 return /* current->exec_domain && current->exec_domain->signal_invmap
734 && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig;
735}
736
459a4017 737#if defined(TARGET_I386) && TARGET_ABI_BITS == 32
66fb9763
FB		 738
739/* from the Linux kernel */
740
741struct target_fpreg {
742 uint16_t significand[4];
743 uint16_t exponent;
744};
745
746struct target_fpxreg {
747 uint16_t significand[4];
748 uint16_t exponent;
749 uint16_t padding[3];
750};
751
752struct target_xmmreg {
992f48a0 753 abi_ulong element[4];
66fb9763
FB		 754};
755
756struct target_fpstate {
757 /* Regular FPU environment */
992f48a0
BS		 758 abi_ulong cw;
759 abi_ulong sw;
760 abi_ulong tag;
761 abi_ulong ipoff;
762 abi_ulong cssel;
763 abi_ulong dataoff;
764 abi_ulong datasel;
66fb9763
FB		 765 struct target_fpreg _st[8];
766 uint16_t status;
767 uint16_t magic; /* 0xffff = regular FPU data only */
768
769 /* FXSR FPU environment */
992f48a0
BS		 770 abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */
771 abi_ulong mxcsr;
772 abi_ulong reserved;
66fb9763
FB		 773 struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
774 struct target_xmmreg _xmm[8];
992f48a0 775 abi_ulong padding[56];
66fb9763
FB		 776};
777
778#define X86_FXSR_MAGIC 0x0000
779
780struct target_sigcontext {
781 uint16_t gs, __gsh;
782 uint16_t fs, __fsh;
783 uint16_t es, __esh;
784 uint16_t ds, __dsh;
992f48a0
BS		 785 abi_ulong edi;
786 abi_ulong esi;
787 abi_ulong ebp;
788 abi_ulong esp;
789 abi_ulong ebx;
790 abi_ulong edx;
791 abi_ulong ecx;
792 abi_ulong eax;
793 abi_ulong trapno;
794 abi_ulong err;
795 abi_ulong eip;
66fb9763 796 uint16_t cs, __csh;
992f48a0
BS		 797 abi_ulong eflags;
798 abi_ulong esp_at_signal;
66fb9763 799 uint16_t ss, __ssh;
992f48a0
BS		 800 abi_ulong fpstate; /* pointer */
801 abi_ulong oldmask;
802 abi_ulong cr2;
66fb9763
FB		 803};
804
66fb9763 805struct target_ucontext {
992f48a0
BS		 806 abi_ulong tuc_flags;
807 abi_ulong tuc_link;
c227f099 808 target_stack_t tuc_stack;
b8076a74 809 struct target_sigcontext tuc_mcontext;
c227f099 810 target_sigset_t tuc_sigmask; /* mask last for extensibility */
66fb9763
FB		 811};
812
813struct sigframe
814{
992f48a0 815 abi_ulong pretcode;
66fb9763
FB		 816 int sig;
817 struct target_sigcontext sc;
818 struct target_fpstate fpstate;
992f48a0 819 abi_ulong extramask[TARGET_NSIG_WORDS-1];
66fb9763
FB		 820 char retcode[8];
821};
822
823struct rt_sigframe
824{
992f48a0 825 abi_ulong pretcode;
66fb9763 826 int sig;
992f48a0
BS		 827 abi_ulong pinfo;
828 abi_ulong puc;
66fb9763
FB		 829 struct target_siginfo info;
830 struct target_ucontext uc;
831 struct target_fpstate fpstate;
832 char retcode[8];
833};
834
835/*
836 * Set up a signal frame.
837 */
838
66fb9763 839/* XXX: save x87 state */
41ecc72b
RV		 840static void setup_sigcontext(struct target_sigcontext *sc,
841 struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask,
842 abi_ulong fpstate_addr)
66fb9763 843{
27103424 844 CPUState *cs = CPU(x86_env_get_cpu(env));
27103424 845 uint16_t magic;
66fb9763 846
579a97f7 847 /* already locked in setup_frame() */
1d8b512b
RV		 848 __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
849 __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
850 __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
851 __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds);
852 __put_user(env->regs[R_EDI], &sc->edi);
853 __put_user(env->regs[R_ESI], &sc->esi);
854 __put_user(env->regs[R_EBP], &sc->ebp);
855 __put_user(env->regs[R_ESP], &sc->esp);
856 __put_user(env->regs[R_EBX], &sc->ebx);
857 __put_user(env->regs[R_EDX], &sc->edx);
858 __put_user(env->regs[R_ECX], &sc->ecx);
859 __put_user(env->regs[R_EAX], &sc->eax);
860 __put_user(cs->exception_index, &sc->trapno);
861 __put_user(env->error_code, &sc->err);
862 __put_user(env->eip, &sc->eip);
863 __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs);
864 __put_user(env->eflags, &sc->eflags);
865 __put_user(env->regs[R_ESP], &sc->esp_at_signal);
866 __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
ed2dcdf6 867
28be6234 868 cpu_x86_fsave(env, fpstate_addr, 1);
ed2dcdf6 869 fpstate->status = fpstate->sw;
775b58d8 870 magic = 0xffff;
1d8b512b
RV		 871 __put_user(magic, &fpstate->magic);
872 __put_user(fpstate_addr, &sc->fpstate);
ed2dcdf6 873
66fb9763 874 /* non-iBCS2 extensions.. */
1d8b512b
RV		 875 __put_user(mask, &sc->oldmask);
876 __put_user(env->cr[2], &sc->cr2);
31e31b8a
FB		 877}
878
66fb9763
FB		 879/*
880 * Determine which stack to use..
881 */
31e31b8a 882
579a97f7 883static inline abi_ulong
624f7979 884get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
31e31b8a 885{
66fb9763
FB		 886 unsigned long esp;
887
888 /* Default to using normal stack */
889 esp = env->regs[R_ESP];
66fb9763 890 /* This is the X/Open sanctioned signal stack switching. */
624f7979 891 if (ka->sa_flags & TARGET_SA_ONSTACK) {
a04e134a
TS		 892 if (sas_ss_flags(esp) == 0)
893 esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
894 }
66fb9763
FB		 895
896 /* This is the legacy signal stack switching. */
5fafdf24 897 else
a52c757c 898 if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
624f7979
PB		 899 !(ka->sa_flags & TARGET_SA_RESTORER) &&
900 ka->sa_restorer) {
901 esp = (unsigned long) ka->sa_restorer;
a52c757c 902 }
579a97f7 903 return (esp - frame_size) & -8ul;
66fb9763
FB		 904}
905
579a97f7 906/* compare linux/arch/i386/kernel/signal.c:setup_frame() */
624f7979 907static void setup_frame(int sig, struct target_sigaction *ka,
c227f099 908 target_sigset_t *set, CPUX86State *env)
66fb9763 909{
579a97f7 910 abi_ulong frame_addr;
66fb9763 911 struct sigframe *frame;
7df2fa36 912 int i;
66fb9763 913
579a97f7 914 frame_addr = get_sigframe(ka, env, sizeof(*frame));
66fb9763 915
579a97f7 916 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
66fb9763 917 goto give_sigsegv;
579a97f7 918
1d8b512b
RV		 919 __put_user(current_exec_domain_sig(sig),
920 &frame->sig);
66fb9763 921
28be6234
FB		 922 setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
923 frame_addr + offsetof(struct sigframe, fpstate));
66fb9763 924
7df2fa36
RV		 925 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
926 __put_user(set->sig[i], &frame->extramask[i - 1]);
927 }
66fb9763
FB		 928
929 /* Set up to return from userspace. If provided, use a stub
930 already in userspace. */
624f7979 931 if (ka->sa_flags & TARGET_SA_RESTORER) {
1d8b512b 932 __put_user(ka->sa_restorer, &frame->pretcode);
66fb9763 933 } else {
775b58d8 934 uint16_t val16;
28be6234
FB		 935 abi_ulong retcode_addr;
936 retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
1d8b512b 937 __put_user(retcode_addr, &frame->pretcode);
66fb9763 938 /* This is popl %eax ; movl $,%eax ; int $0x80 */
775b58d8 939 val16 = 0xb858;
1d8b512b
RV		 940 __put_user(val16, (uint16_t *)(frame->retcode+0));
941 __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2));
775b58d8 942 val16 = 0x80cd;
1d8b512b 943 __put_user(val16, (uint16_t *)(frame->retcode+6));
66fb9763
FB		 944 }
945
66fb9763
FB		 946
947 /* Set up registers for signal handler */
28be6234 948 env->regs[R_ESP] = frame_addr;
624f7979 949 env->eip = ka->_sa_handler;
66fb9763
FB		 950
951 cpu_x86_load_seg(env, R_DS, __USER_DS);
952 cpu_x86_load_seg(env, R_ES, __USER_DS);
953 cpu_x86_load_seg(env, R_SS, __USER_DS);
954 cpu_x86_load_seg(env, R_CS, __USER_CS);
955 env->eflags &= ~TF_MASK;
956
579a97f7
FB		 957 unlock_user_struct(frame, frame_addr, 1);
958
66fb9763
FB		 959 return;
960
961give_sigsegv:
962 if (sig == TARGET_SIGSEGV)
624f7979 963 ka->_sa_handler = TARGET_SIG_DFL;
66fb9763
FB		 964 force_sig(TARGET_SIGSEGV /* , current */);
965}
966
579a97f7 967/* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
624f7979 968static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099
AL		 969 target_siginfo_t *info,
970 target_sigset_t *set, CPUX86State *env)
66fb9763 971{
28be6234 972 abi_ulong frame_addr, addr;
66fb9763 973 struct rt_sigframe *frame;
0188fadb 974 int i;
66fb9763 975
579a97f7 976 frame_addr = get_sigframe(ka, env, sizeof(*frame));
66fb9763 977
579a97f7 978 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
66fb9763 979 goto give_sigsegv;
66fb9763 980
1d8b512b 981 __put_user(current_exec_domain_sig(sig), &frame->sig);
28be6234 982 addr = frame_addr + offsetof(struct rt_sigframe, info);
1d8b512b 983 __put_user(addr, &frame->pinfo);
28be6234 984 addr = frame_addr + offsetof(struct rt_sigframe, uc);
1d8b512b 985 __put_user(addr, &frame->puc);
b0fd8d18 986 copy_siginfo_to_user(&frame->info, info);
31e31b8a 987
66fb9763 988 /* Create the ucontext. */
1d8b512b
RV		 989 __put_user(0, &frame->uc.tuc_flags);
990 __put_user(0, &frame->uc.tuc_link);
991 __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
992 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
993 &frame->uc.tuc_stack.ss_flags);
994 __put_user(target_sigaltstack_used.ss_size,
995 &frame->uc.tuc_stack.ss_size);
41ecc72b
RV		 996 setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env,
997 set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate));
998
0188fadb
RV		 999 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1000 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
1001 }
31e31b8a 1002
66fb9763
FB		 1003 /* Set up to return from userspace. If provided, use a stub
1004 already in userspace. */
624f7979 1005 if (ka->sa_flags & TARGET_SA_RESTORER) {
1d8b512b 1006 __put_user(ka->sa_restorer, &frame->pretcode);
66fb9763 1007 } else {
775b58d8 1008 uint16_t val16;
28be6234 1009 addr = frame_addr + offsetof(struct rt_sigframe, retcode);
1d8b512b 1010 __put_user(addr, &frame->pretcode);
66fb9763 1011 /* This is movl $,%eax ; int $0x80 */
1d8b512b
RV		 1012 __put_user(0xb8, (char *)(frame->retcode+0));
1013 __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1));
775b58d8 1014 val16 = 0x80cd;
1d8b512b 1015 __put_user(val16, (uint16_t *)(frame->retcode+5));
66fb9763
FB		 1016 }
1017
66fb9763 1018 /* Set up registers for signal handler */
28be6234 1019 env->regs[R_ESP] = frame_addr;
624f7979 1020 env->eip = ka->_sa_handler;
66fb9763
FB		 1021
1022 cpu_x86_load_seg(env, R_DS, __USER_DS);
1023 cpu_x86_load_seg(env, R_ES, __USER_DS);
1024 cpu_x86_load_seg(env, R_SS, __USER_DS);
1025 cpu_x86_load_seg(env, R_CS, __USER_CS);
1026 env->eflags &= ~TF_MASK;
1027
579a97f7
FB		 1028 unlock_user_struct(frame, frame_addr, 1);
1029
66fb9763
FB		 1030 return;
1031
1032give_sigsegv:
1033 if (sig == TARGET_SIGSEGV)
624f7979 1034 ka->_sa_handler = TARGET_SIG_DFL;
66fb9763
FB		 1035 force_sig(TARGET_SIGSEGV /* , current */);
1036}
1037
1038static int
1039restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax)
1040{
1041 unsigned int err = 0;
28be6234
FB		 1042 abi_ulong fpstate_addr;
1043 unsigned int tmpflags;
1044
1045 cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
1046 cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
1047 cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
1048 cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
1049
1050 env->regs[R_EDI] = tswapl(sc->edi);
1051 env->regs[R_ESI] = tswapl(sc->esi);
1052 env->regs[R_EBP] = tswapl(sc->ebp);
1053 env->regs[R_ESP] = tswapl(sc->esp);
1054 env->regs[R_EBX] = tswapl(sc->ebx);
1055 env->regs[R_EDX] = tswapl(sc->edx);
1056 env->regs[R_ECX] = tswapl(sc->ecx);
1057 env->eip = tswapl(sc->eip);
66fb9763 1058
9a826d78
MM		 1059 cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
1060 cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
5fafdf24 1061
28be6234
FB		 1062 tmpflags = tswapl(sc->eflags);
1063 env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
1064 // regs->orig_eax = -1; /* disable syscall checks */
66fb9763 1065
28be6234
FB		 1066 fpstate_addr = tswapl(sc->fpstate);
1067 if (fpstate_addr != 0) {
1068 if (!access_ok(VERIFY_READ, fpstate_addr,
1069 sizeof(struct target_fpstate)))
1070 goto badframe;
1071 cpu_x86_frstor(env, fpstate_addr, 1);
66fb9763 1072 }
ed2dcdf6 1073
28be6234 1074 *peax = tswapl(sc->eax);
66fb9763 1075 return err;
66fb9763
FB		 1076badframe:
1077 return 1;
66fb9763
FB		 1078}
1079
1080long do_sigreturn(CPUX86State *env)
1081{
579a97f7
FB		 1082 struct sigframe *frame;
1083 abi_ulong frame_addr = env->regs[R_ESP] - 8;
c227f099 1084 target_sigset_t target_set;
66fb9763
FB		 1085 sigset_t set;
1086 int eax, i;
1087
447db213
FB		 1088#if defined(DEBUG_SIGNAL)
1089 fprintf(stderr, "do_sigreturn\n");
1090#endif
579a97f7
FB		 1091 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1092 goto badframe;
66fb9763 1093 /* set blocked signals */
f5f601af 1094 __get_user(target_set.sig[0], &frame->sc.oldmask);
9231944d 1095 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 1096 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
9231944d 1097 }
66fb9763 1098
9231944d 1099 target_to_host_sigset_internal(&set, &target_set);
1c275925 1100 do_sigprocmask(SIG_SETMASK, &set, NULL);
3b46e624 1101
66fb9763
FB		 1102 /* restore registers */
1103 if (restore_sigcontext(env, &frame->sc, &eax))
1104 goto badframe;
579a97f7 1105 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1106 return eax;
1107
1108badframe:
579a97f7 1109 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1110 force_sig(TARGET_SIGSEGV);
1111 return 0;
1112}
1113
1114long do_rt_sigreturn(CPUX86State *env)
1115{
28be6234
FB		 1116 abi_ulong frame_addr;
1117 struct rt_sigframe *frame;
66fb9763 1118 sigset_t set;
66fb9763
FB		 1119 int eax;
1120
28be6234
FB		 1121 frame_addr = env->regs[R_ESP] - 4;
1122 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1123 goto badframe;
b8076a74 1124 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
1c275925 1125 do_sigprocmask(SIG_SETMASK, &set, NULL);
5fafdf24 1126
b8076a74 1127 if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax))
66fb9763
FB		 1128 goto badframe;
1129
28be6234
FB		 1130 if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0,
1131 get_sp_from_cpustate(env)) == -EFAULT)
66fb9763 1132 goto badframe;
a04e134a 1133
28be6234 1134 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1135 return eax;
1136
1137badframe:
28be6234
FB		 1138 unlock_user_struct(frame, frame_addr, 0);
1139 force_sig(TARGET_SIGSEGV);
66fb9763
FB		 1140 return 0;
1141}
1142
1744aea1
AS		 1143#elif defined(TARGET_AARCH64)
1144
1145struct target_sigcontext {
1146 uint64_t fault_address;
1147 /* AArch64 registers */
1148 uint64_t regs[31];
1149 uint64_t sp;
1150 uint64_t pc;
1151 uint64_t pstate;
1152 /* 4K reserved for FP/SIMD state and future expansion */
1153 char __reserved[4096] __attribute__((__aligned__(16)));
1154};
1155
1156struct target_ucontext {
1157 abi_ulong tuc_flags;
1158 abi_ulong tuc_link;
1159 target_stack_t tuc_stack;
1160 target_sigset_t tuc_sigmask;
1161 /* glibc uses a 1024-bit sigset_t */
1162 char __unused[1024 / 8 - sizeof(target_sigset_t)];
1163 /* last for future expansion */
1164 struct target_sigcontext tuc_mcontext;
1165};
1166
1167/*
1168 * Header to be used at the beginning of structures extending the user
1169 * context. Such structures must be placed after the rt_sigframe on the stack
1170 * and be 16-byte aligned. The last structure must be a dummy one with the
1171 * magic and size set to 0.
1172 */
1173struct target_aarch64_ctx {
1174 uint32_t magic;
1175 uint32_t size;
1176};
1177
1178#define TARGET_FPSIMD_MAGIC 0x46508001
1179
1180struct target_fpsimd_context {
1181 struct target_aarch64_ctx head;
1182 uint32_t fpsr;
1183 uint32_t fpcr;
1184 uint64_t vregs[32 * 2]; /* really uint128_t vregs[32] */
1185};
1186
1187/*
1188 * Auxiliary context saved in the sigcontext.__reserved array. Not exported to
1189 * user space as it will change with the addition of new context. User space
1190 * should check the magic/size information.
1191 */
1192struct target_aux_context {
1193 struct target_fpsimd_context fpsimd;
1194 /* additional context to be added before "end" */
1195 struct target_aarch64_ctx end;
1196};
1197
1198struct target_rt_sigframe {
1199 struct target_siginfo info;
1200 struct target_ucontext uc;
1201 uint64_t fp;
1202 uint64_t lr;
1203 uint32_t tramp[2];
1204};
1205
1206static int target_setup_sigframe(struct target_rt_sigframe *sf,
1207 CPUARMState *env, target_sigset_t *set)
1208{
1209 int i;
1210 struct target_aux_context *aux =
1211 (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved;
1212
1213 /* set up the stack frame for unwinding */
1214 __put_user(env->xregs[29], &sf->fp);
1215 __put_user(env->xregs[30], &sf->lr);
1216
1217 for (i = 0; i < 31; i++) {
1218 __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
1219 }
1220 __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
1221 __put_user(env->pc, &sf->uc.tuc_mcontext.pc);
d356312f 1222 __put_user(pstate_read(env), &sf->uc.tuc_mcontext.pstate);
1744aea1 1223
7af03928 1224 __put_user(env->exception.vaddress, &sf->uc.tuc_mcontext.fault_address);
1744aea1
AS		 1225
1226 for (i = 0; i < TARGET_NSIG_WORDS; i++) {
1227 __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]);
1228 }
1229
1230 for (i = 0; i < 32; i++) {
1231#ifdef TARGET_WORDS_BIGENDIAN
1232 __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]);
1233 __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]);
1234#else
1235 __put_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]);
1236 __put_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]);
1237#endif
1238 }
e0ee138b
WN		 1239 __put_user(vfp_get_fpsr(env), &aux->fpsimd.fpsr);
1240 __put_user(vfp_get_fpcr(env), &aux->fpsimd.fpcr);
1744aea1
AS		 1241 __put_user(TARGET_FPSIMD_MAGIC, &aux->fpsimd.head.magic);
1242 __put_user(sizeof(struct target_fpsimd_context),
1243 &aux->fpsimd.head.size);
1244
1245 /* set the "end" magic */
1246 __put_user(0, &aux->end.magic);
1247 __put_user(0, &aux->end.size);
1248
1249 return 0;
1250}
1251
1252static int target_restore_sigframe(CPUARMState *env,
1253 struct target_rt_sigframe *sf)
1254{
1255 sigset_t set;
1256 int i;
1257 struct target_aux_context *aux =
1258 (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved;
e0ee138b 1259 uint32_t magic, size, fpsr, fpcr;
d356312f 1260 uint64_t pstate;
1744aea1
AS		 1261
1262 target_to_host_sigset(&set, &sf->uc.tuc_sigmask);
1c275925 1263 do_sigprocmask(SIG_SETMASK, &set, NULL);
1744aea1
AS		 1264
1265 for (i = 0; i < 31; i++) {
1266 __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
1267 }
1268
1269 __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
1270 __get_user(env->pc, &sf->uc.tuc_mcontext.pc);
d356312f
PM		 1271 __get_user(pstate, &sf->uc.tuc_mcontext.pstate);
1272 pstate_write(env, pstate);
1744aea1
AS		 1273
1274 __get_user(magic, &aux->fpsimd.head.magic);
1275 __get_user(size, &aux->fpsimd.head.size);
1276
1277 if (magic != TARGET_FPSIMD_MAGIC
1278 || size != sizeof(struct target_fpsimd_context)) {
1279 return 1;
1280 }
1281
4cf23480
PM		 1282 for (i = 0; i < 32; i++) {
1283#ifdef TARGET_WORDS_BIGENDIAN
1284 __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2 + 1]);
1285 __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2]);
1286#else
1287 __get_user(env->vfp.regs[i * 2], &aux->fpsimd.vregs[i * 2]);
1288 __get_user(env->vfp.regs[i * 2 + 1], &aux->fpsimd.vregs[i * 2 + 1]);
1289#endif
1744aea1 1290 }
e0ee138b
WN		 1291 __get_user(fpsr, &aux->fpsimd.fpsr);
1292 vfp_set_fpsr(env, fpsr);
1293 __get_user(fpcr, &aux->fpsimd.fpcr);
1294 vfp_set_fpcr(env, fpcr);
1744aea1
AS		 1295
1296 return 0;
1297}
1298
1299static abi_ulong get_sigframe(struct target_sigaction *ka, CPUARMState *env)
1300{
1301 abi_ulong sp;
1302
1303 sp = env->xregs[31];
1304
1305 /*
1306 * This is the X/Open sanctioned signal stack switching.
1307 */
b545f63f 1308 if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
1744aea1
AS		 1309 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
1310 }
1311
1312 sp = (sp - sizeof(struct target_rt_sigframe)) & ~15;
1313
1314 return sp;
1315}
1316
1317static void target_setup_frame(int usig, struct target_sigaction *ka,
1318 target_siginfo_t *info, target_sigset_t *set,
1319 CPUARMState *env)
1320{
1321 struct target_rt_sigframe *frame;
8a3ae910 1322 abi_ulong frame_addr, return_addr;
1744aea1
AS		 1323
1324 frame_addr = get_sigframe(ka, env);
1325 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
1326 goto give_sigsegv;
1327 }
1328
1329 __put_user(0, &frame->uc.tuc_flags);
1330 __put_user(0, &frame->uc.tuc_link);
1331
1332 __put_user(target_sigaltstack_used.ss_sp,
1333 &frame->uc.tuc_stack.ss_sp);
1334 __put_user(sas_ss_flags(env->xregs[31]),
1335 &frame->uc.tuc_stack.ss_flags);
1336 __put_user(target_sigaltstack_used.ss_size,
1337 &frame->uc.tuc_stack.ss_size);
1338 target_setup_sigframe(frame, env, set);
8a3ae910
MM		 1339 if (ka->sa_flags & TARGET_SA_RESTORER) {
1340 return_addr = ka->sa_restorer;
1341 } else {
1342 /* mov x8,#__NR_rt_sigreturn; svc #0 */
1343 __put_user(0xd2801168, &frame->tramp[0]);
1344 __put_user(0xd4000001, &frame->tramp[1]);
1345 return_addr = frame_addr + offsetof(struct target_rt_sigframe, tramp);
1346 }
1744aea1
AS		 1347 env->xregs[0] = usig;
1348 env->xregs[31] = frame_addr;
1349 env->xregs[29] = env->xregs[31] + offsetof(struct target_rt_sigframe, fp);
1350 env->pc = ka->_sa_handler;
8a3ae910 1351 env->xregs[30] = return_addr;
1744aea1 1352 if (info) {
b0fd8d18 1353 copy_siginfo_to_user(&frame->info, info);
1744aea1
AS		 1354 env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
1355 env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
1356 }
1357
1358 unlock_user_struct(frame, frame_addr, 1);
1359 return;
1360
1361 give_sigsegv:
1362 unlock_user_struct(frame, frame_addr, 1);
1363 force_sig(TARGET_SIGSEGV);
1364}
1365
1366static void setup_rt_frame(int sig, struct target_sigaction *ka,
1367 target_siginfo_t *info, target_sigset_t *set,
1368 CPUARMState *env)
1369{
1370 target_setup_frame(sig, ka, info, set, env);
1371}
1372
1373static void setup_frame(int sig, struct target_sigaction *ka,
1374 target_sigset_t *set, CPUARMState *env)
1375{
1376 target_setup_frame(sig, ka, 0, set, env);
1377}
1378
1379long do_rt_sigreturn(CPUARMState *env)
1380{
7f72cd23 1381 struct target_rt_sigframe *frame = NULL;
1744aea1
AS		 1382 abi_ulong frame_addr = env->xregs[31];
1383
1384 if (frame_addr & 15) {
1385 goto badframe;
1386 }
1387
1388 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
1389 goto badframe;
1390 }
1391
1392 if (target_restore_sigframe(env, frame)) {
1393 goto badframe;
1394 }
1395
1396 if (do_sigaltstack(frame_addr +
1397 offsetof(struct target_rt_sigframe, uc.tuc_stack),
1398 0, get_sp_from_cpustate(env)) == -EFAULT) {
1399 goto badframe;
1400 }
1401
1402 unlock_user_struct(frame, frame_addr, 0);
1403 return env->xregs[0];
1404
1405 badframe:
1406 unlock_user_struct(frame, frame_addr, 0);
1407 force_sig(TARGET_SIGSEGV);
1408 return 0;
1409}
1410
1411long do_sigreturn(CPUARMState *env)
1412{
1413 return do_rt_sigreturn(env);
1414}
1415
43fff238
FB		 1416#elif defined(TARGET_ARM)
1417
1418struct target_sigcontext {
992f48a0
BS		 1419 abi_ulong trap_no;
1420 abi_ulong error_code;
1421 abi_ulong oldmask;
1422 abi_ulong arm_r0;
1423 abi_ulong arm_r1;
1424 abi_ulong arm_r2;
1425 abi_ulong arm_r3;
1426 abi_ulong arm_r4;
1427 abi_ulong arm_r5;
1428 abi_ulong arm_r6;
1429 abi_ulong arm_r7;
1430 abi_ulong arm_r8;
1431 abi_ulong arm_r9;
1432 abi_ulong arm_r10;
1433 abi_ulong arm_fp;
1434 abi_ulong arm_ip;
1435 abi_ulong arm_sp;
1436 abi_ulong arm_lr;
1437 abi_ulong arm_pc;
1438 abi_ulong arm_cpsr;
1439 abi_ulong fault_address;
43fff238
FB		 1440};
1441
a745ec6d
PB		 1442struct target_ucontext_v1 {
1443 abi_ulong tuc_flags;
1444 abi_ulong tuc_link;
c227f099 1445 target_stack_t tuc_stack;
a745ec6d 1446 struct target_sigcontext tuc_mcontext;
c227f099 1447 target_sigset_t tuc_sigmask; /* mask last for extensibility */
a745ec6d
PB		 1448};
1449
1450struct target_ucontext_v2 {
992f48a0
BS		 1451 abi_ulong tuc_flags;
1452 abi_ulong tuc_link;
c227f099 1453 target_stack_t tuc_stack;
b8076a74 1454 struct target_sigcontext tuc_mcontext;
c227f099 1455 target_sigset_t tuc_sigmask; /* mask last for extensibility */
5f0b7c88 1456 char __unused[128 - sizeof(target_sigset_t)];
a745ec6d 1457 abi_ulong tuc_regspace[128] __attribute__((__aligned__(8)));
43fff238
FB		 1458};
1459
0d871bdb
PM		 1460struct target_user_vfp {
1461 uint64_t fpregs[32];
1462 abi_ulong fpscr;
1463};
1464
1465struct target_user_vfp_exc {
1466 abi_ulong fpexc;
1467 abi_ulong fpinst;
1468 abi_ulong fpinst2;
1469};
1470
1471struct target_vfp_sigframe {
1472 abi_ulong magic;
1473 abi_ulong size;
1474 struct target_user_vfp ufp;
1475 struct target_user_vfp_exc ufp_exc;
1476} __attribute__((__aligned__(8)));
1477
08e11256
PM		 1478struct target_iwmmxt_sigframe {
1479 abi_ulong magic;
1480 abi_ulong size;
1481 uint64_t regs[16];
1482 /* Note that not all the coprocessor control registers are stored here */
1483 uint32_t wcssf;
1484 uint32_t wcasf;
1485 uint32_t wcgr0;
1486 uint32_t wcgr1;
1487 uint32_t wcgr2;
1488 uint32_t wcgr3;
1489} __attribute__((__aligned__(8)));
1490
0d871bdb 1491#define TARGET_VFP_MAGIC 0x56465001
08e11256 1492#define TARGET_IWMMXT_MAGIC 0x12ef842a
0d871bdb 1493
a8c33204 1494struct sigframe_v1
43fff238
FB		 1495{
1496 struct target_sigcontext sc;
992f48a0
BS		 1497 abi_ulong extramask[TARGET_NSIG_WORDS-1];
1498 abi_ulong retcode;
43fff238
FB		 1499};
1500
a8c33204
PB		 1501struct sigframe_v2
1502{
1503 struct target_ucontext_v2 uc;
1504 abi_ulong retcode;
1505};
1506
a745ec6d 1507struct rt_sigframe_v1
43fff238 1508{
f8b0aa25
FB		 1509 abi_ulong pinfo;
1510 abi_ulong puc;
43fff238 1511 struct target_siginfo info;
a745ec6d
PB		 1512 struct target_ucontext_v1 uc;
1513 abi_ulong retcode;
1514};
1515
1516struct rt_sigframe_v2
1517{
1518 struct target_siginfo info;
1519 struct target_ucontext_v2 uc;
992f48a0 1520 abi_ulong retcode;
43fff238
FB		 1521};
1522
1523#define TARGET_CONFIG_CPU_32 1
1524
1525/*
1526 * For ARM syscalls, we encode the syscall number into the instruction.
1527 */
1528#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE))
1529#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE))
1530
1531/*
1532 * For Thumb syscalls, we pass the syscall number via r7. We therefore
1533 * need two 16-bit instructions.
1534 */
1535#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn))
1536#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn))
1537
992f48a0 1538static const abi_ulong retcodes[4] = {
43fff238
FB		 1539 SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN,
1540 SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN
1541};
1542
1543
05390248 1544static inline int valid_user_regs(CPUARMState *regs)
43fff238
FB		 1545{
1546 return 1;
1547}
1548
a8c33204 1549static void
43fff238 1550setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
05390248 1551 CPUARMState *env, abi_ulong mask)
43fff238 1552{
a8c33204
PB		 1553 __put_user(env->regs[0], &sc->arm_r0);
1554 __put_user(env->regs[1], &sc->arm_r1);
1555 __put_user(env->regs[2], &sc->arm_r2);
1556 __put_user(env->regs[3], &sc->arm_r3);
1557 __put_user(env->regs[4], &sc->arm_r4);
1558 __put_user(env->regs[5], &sc->arm_r5);
1559 __put_user(env->regs[6], &sc->arm_r6);
1560 __put_user(env->regs[7], &sc->arm_r7);
1561 __put_user(env->regs[8], &sc->arm_r8);
1562 __put_user(env->regs[9], &sc->arm_r9);
1563 __put_user(env->regs[10], &sc->arm_r10);
1564 __put_user(env->regs[11], &sc->arm_fp);
1565 __put_user(env->regs[12], &sc->arm_ip);
1566 __put_user(env->regs[13], &sc->arm_sp);
1567 __put_user(env->regs[14], &sc->arm_lr);
1568 __put_user(env->regs[15], &sc->arm_pc);
43fff238 1569#ifdef TARGET_CONFIG_CPU_32
a8c33204 1570 __put_user(cpsr_read(env), &sc->arm_cpsr);
43fff238
FB		 1571#endif
1572
a8c33204
PB		 1573 __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
1574 __put_user(/* current->thread.error_code */ 0, &sc->error_code);
1575 __put_user(/* current->thread.address */ 0, &sc->fault_address);
1576 __put_user(mask, &sc->oldmask);
43fff238
FB		 1577}
1578
579a97f7 1579static inline abi_ulong
05390248 1580get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
43fff238
FB		 1581{
1582 unsigned long sp = regs->regs[13];
1583
43fff238
FB		 1584 /*
1585 * This is the X/Open sanctioned signal stack switching.
1586 */
624f7979 1587 if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
a04e134a 1588 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
43fff238
FB		 1589 /*
1590 * ATPCS B01 mandates 8-byte alignment
1591 */
579a97f7 1592 return (sp - framesize) & ~7;
43fff238
FB		 1593}
1594
0188fadb 1595static void
05390248 1596setup_return(CPUARMState *env, struct target_sigaction *ka,
f8b0aa25 1597 abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
43fff238 1598{
624f7979 1599 abi_ulong handler = ka->_sa_handler;
992f48a0 1600 abi_ulong retcode;
75b680e5 1601 int thumb = handler & 1;
964413d9
PM		 1602 uint32_t cpsr = cpsr_read(env);
1603
1604 cpsr &= ~CPSR_IT;
1605 if (thumb) {
1606 cpsr |= CPSR_T;
1607 } else {
1608 cpsr &= ~CPSR_T;
1609 }
43fff238 1610
624f7979
PB		 1611 if (ka->sa_flags & TARGET_SA_RESTORER) {
1612 retcode = ka->sa_restorer;
43fff238
FB		 1613 } else {
1614 unsigned int idx = thumb;
1615
624f7979 1616 if (ka->sa_flags & TARGET_SA_SIGINFO)
43fff238
FB		 1617 idx += 2;
1618
0188fadb 1619 __put_user(retcodes[idx], rc);
ca8a277c 1620
f8b0aa25 1621 retcode = rc_addr + thumb;
43fff238
FB		 1622 }
1623
1624 env->regs[0] = usig;
f8b0aa25 1625 env->regs[13] = frame_addr;
43fff238
FB		 1626 env->regs[14] = retcode;
1627 env->regs[15] = handler & (thumb ? ~1 : ~3);
964413d9 1628 cpsr_write(env, cpsr, 0xffffffff);
43fff238
FB		 1629}
1630
05390248 1631static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
0d871bdb
PM		 1632{
1633 int i;
1634 struct target_vfp_sigframe *vfpframe;
1635 vfpframe = (struct target_vfp_sigframe *)regspace;
1636 __put_user(TARGET_VFP_MAGIC, &vfpframe->magic);
1637 __put_user(sizeof(*vfpframe), &vfpframe->size);
1638 for (i = 0; i < 32; i++) {
005e1a0a 1639 __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]);
0d871bdb
PM		 1640 }
1641 __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr);
1642 __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc);
1643 __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
1644 __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
1645 return (abi_ulong*)(vfpframe+1);
1646}
1647
05390248
AF		 1648static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace,
1649 CPUARMState *env)
08e11256
PM		 1650{
1651 int i;
1652 struct target_iwmmxt_sigframe *iwmmxtframe;
1653 iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
1654 __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic);
1655 __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size);
1656 for (i = 0; i < 16; i++) {
1657 __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
1658 }
1659 __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
1660 __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
1661 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
1662 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
1663 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
1664 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
1665 return (abi_ulong*)(iwmmxtframe+1);
1666}
1667
a8c33204 1668static void setup_sigframe_v2(struct target_ucontext_v2 *uc,
05390248 1669 target_sigset_t *set, CPUARMState *env)
a8c33204
PB		 1670{
1671 struct target_sigaltstack stack;
1672 int i;
0d871bdb 1673 abi_ulong *regspace;
a8c33204
PB		 1674
1675 /* Clear all the bits of the ucontext we don't use. */
1676 memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext));
1677
1678 memset(&stack, 0, sizeof(stack));
1679 __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
1680 __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
1681 __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
1682 memcpy(&uc->tuc_stack, &stack, sizeof(stack));
1683
1684 setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]);
0d871bdb
PM		 1685 /* Save coprocessor signal frame. */
1686 regspace = uc->tuc_regspace;
1687 if (arm_feature(env, ARM_FEATURE_VFP)) {
1688 regspace = setup_sigframe_v2_vfp(regspace, env);
1689 }
08e11256
PM		 1690 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1691 regspace = setup_sigframe_v2_iwmmxt(regspace, env);
1692 }
1693
0d871bdb
PM		 1694 /* Write terminating magic word */
1695 __put_user(0, regspace);
1696
a8c33204
PB		 1697 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1698 __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]);
1699 }
1700}
1701
579a97f7 1702/* compare linux/arch/arm/kernel/signal.c:setup_frame() */
624f7979 1703static void setup_frame_v1(int usig, struct target_sigaction *ka,
05390248 1704 target_sigset_t *set, CPUARMState *regs)
43fff238 1705{
a8c33204 1706 struct sigframe_v1 *frame;
579a97f7 1707 abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
a8c33204 1708 int i;
43fff238 1709
579a97f7
FB		 1710 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1711 return;
1712
a8c33204 1713 setup_sigcontext(&frame->sc, regs, set->sig[0]);
43fff238 1714
0188fadb
RV		 1715 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1716 __put_user(set->sig[i], &frame->extramask[i - 1]);
1717 }
43fff238 1718
a8c33204
PB		 1719 setup_return(regs, ka, &frame->retcode, frame_addr, usig,
1720 frame_addr + offsetof(struct sigframe_v1, retcode));
579a97f7 1721
579a97f7 1722 unlock_user_struct(frame, frame_addr, 1);
a8c33204
PB		 1723}
1724
624f7979 1725static void setup_frame_v2(int usig, struct target_sigaction *ka,
05390248 1726 target_sigset_t *set, CPUARMState *regs)
a8c33204
PB		 1727{
1728 struct sigframe_v2 *frame;
1729 abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
1730
1731 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1732 return;
1733
1734 setup_sigframe_v2(&frame->uc, set, regs);
1735
1736 setup_return(regs, ka, &frame->retcode, frame_addr, usig,
1737 frame_addr + offsetof(struct sigframe_v2, retcode));
1738
1739 unlock_user_struct(frame, frame_addr, 1);
1740}
1741
624f7979 1742static void setup_frame(int usig, struct target_sigaction *ka,
05390248 1743 target_sigset_t *set, CPUARMState *regs)
a8c33204
PB		 1744{
1745 if (get_osversion() >= 0x020612) {
1746 setup_frame_v2(usig, ka, set, regs);
1747 } else {
1748 setup_frame_v1(usig, ka, set, regs);
1749 }
43fff238
FB		 1750}
1751
579a97f7 1752/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
624f7979 1753static void setup_rt_frame_v1(int usig, struct target_sigaction *ka,
c227f099 1754 target_siginfo_t *info,
05390248 1755 target_sigset_t *set, CPUARMState *env)
43fff238 1756{
a745ec6d 1757 struct rt_sigframe_v1 *frame;
579a97f7 1758 abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
a04e134a 1759 struct target_sigaltstack stack;
a8c33204 1760 int i;
f8b0aa25 1761 abi_ulong info_addr, uc_addr;
43fff238 1762
579a97f7 1763 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
edf779ff
FB		 1764 return /* 1 */;
1765
a745ec6d 1766 info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
a8c33204 1767 __put_user(info_addr, &frame->pinfo);
a745ec6d 1768 uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
a8c33204
PB		 1769 __put_user(uc_addr, &frame->puc);
1770 copy_siginfo_to_user(&frame->info, info);
43fff238
FB		 1771
1772 /* Clear all the bits of the ucontext we don't use. */
a745ec6d 1773 memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
43fff238 1774
a04e134a
TS		 1775 memset(&stack, 0, sizeof(stack));
1776 __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
1777 __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
1778 __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
775b58d8 1779 memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
a04e134a 1780
a8c33204 1781 setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
9231944d 1782 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
0188fadb 1783 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
9231944d 1784 }
43fff238 1785
a8c33204
PB		 1786 setup_return(env, ka, &frame->retcode, frame_addr, usig,
1787 frame_addr + offsetof(struct rt_sigframe_v1, retcode));
a745ec6d 1788
a8c33204
PB		 1789 env->regs[1] = info_addr;
1790 env->regs[2] = uc_addr;
a745ec6d 1791
a745ec6d 1792 unlock_user_struct(frame, frame_addr, 1);
a745ec6d
PB		 1793}
1794
624f7979 1795static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
c227f099 1796 target_siginfo_t *info,
05390248 1797 target_sigset_t *set, CPUARMState *env)
a745ec6d
PB		 1798{
1799 struct rt_sigframe_v2 *frame;
1800 abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
a745ec6d
PB		 1801 abi_ulong info_addr, uc_addr;
1802
1803 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1804 return /* 1 */;
1805
1806 info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
1807 uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
a8c33204 1808 copy_siginfo_to_user(&frame->info, info);
a745ec6d 1809
a8c33204 1810 setup_sigframe_v2(&frame->uc, set, env);
a745ec6d 1811
a8c33204
PB		 1812 setup_return(env, ka, &frame->retcode, frame_addr, usig,
1813 frame_addr + offsetof(struct rt_sigframe_v2, retcode));
a745ec6d 1814
a8c33204
PB		 1815 env->regs[1] = info_addr;
1816 env->regs[2] = uc_addr;
43fff238 1817
579a97f7 1818 unlock_user_struct(frame, frame_addr, 1);
43fff238
FB		 1819}
1820
624f7979 1821static void setup_rt_frame(int usig, struct target_sigaction *ka,
c227f099 1822 target_siginfo_t *info,
05390248 1823 target_sigset_t *set, CPUARMState *env)
a745ec6d
PB		 1824{
1825 if (get_osversion() >= 0x020612) {
1826 setup_rt_frame_v2(usig, ka, info, set, env);
1827 } else {
1828 setup_rt_frame_v1(usig, ka, info, set, env);
1829 }
1830}
1831
43fff238 1832static int
05390248 1833restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc)
43fff238
FB		 1834{
1835 int err = 0;
b5ff1b31 1836 uint32_t cpsr;
43fff238 1837
1d8b512b
RV		 1838 __get_user(env->regs[0], &sc->arm_r0);
1839 __get_user(env->regs[1], &sc->arm_r1);
1840 __get_user(env->regs[2], &sc->arm_r2);
1841 __get_user(env->regs[3], &sc->arm_r3);
1842 __get_user(env->regs[4], &sc->arm_r4);
1843 __get_user(env->regs[5], &sc->arm_r5);
1844 __get_user(env->regs[6], &sc->arm_r6);
1845 __get_user(env->regs[7], &sc->arm_r7);
1846 __get_user(env->regs[8], &sc->arm_r8);
1847 __get_user(env->regs[9], &sc->arm_r9);
1848 __get_user(env->regs[10], &sc->arm_r10);
1849 __get_user(env->regs[11], &sc->arm_fp);
1850 __get_user(env->regs[12], &sc->arm_ip);
1851 __get_user(env->regs[13], &sc->arm_sp);
1852 __get_user(env->regs[14], &sc->arm_lr);
1853 __get_user(env->regs[15], &sc->arm_pc);
43fff238 1854#ifdef TARGET_CONFIG_CPU_32
1d8b512b 1855 __get_user(cpsr, &sc->arm_cpsr);
75b680e5 1856 cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC);
43fff238
FB		 1857#endif
1858
1859 err |= !valid_user_regs(env);
1860
1861 return err;
1862}
1863
05390248 1864static long do_sigreturn_v1(CPUARMState *env)
43fff238 1865{
f8b0aa25 1866 abi_ulong frame_addr;
978fae9f 1867 struct sigframe_v1 *frame = NULL;
c227f099 1868 target_sigset_t set;
43fff238 1869 sigset_t host_set;
9231944d 1870 int i;
43fff238
FB		 1871
1872 /*
1873 * Since we stacked the signal on a 64-bit boundary,
1874 * then 'sp' should be word aligned here. If it's
1875 * not, then the user is trying to mess with us.
1876 */
f8b0aa25 1877 frame_addr = env->regs[13];
978fae9f
PM		 1878 if (frame_addr & 7) {
1879 goto badframe;
1880 }
1881
f8b0aa25
FB		 1882 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1883 goto badframe;
43fff238 1884
f5f601af
RV		 1885 __get_user(set.sig[0], &frame->sc.oldmask);
1886 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1887 __get_user(set.sig[i], &frame->extramask[i - 1]);
1888 }
43fff238 1889
9231944d 1890 target_to_host_sigset_internal(&host_set, &set);
1c275925 1891 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
43fff238
FB		 1892
1893 if (restore_sigcontext(env, &frame->sc))
1894 goto badframe;
1895
1896#if 0
1897 /* Send SIGTRAP if we're single-stepping */
1898 if (ptrace_cancel_bpt(current))
1899 send_sig(SIGTRAP, current, 1);
1900#endif
f8b0aa25
FB		 1901 unlock_user_struct(frame, frame_addr, 0);
1902 return env->regs[0];
43fff238
FB		 1903
1904badframe:
66393fb9 1905 force_sig(TARGET_SIGSEGV /* , current */);
43fff238
FB		 1906 return 0;
1907}
1908
05390248 1909static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace)
5f9099d9
PM		 1910{
1911 int i;
1912 abi_ulong magic, sz;
1913 uint32_t fpscr, fpexc;
1914 struct target_vfp_sigframe *vfpframe;
1915 vfpframe = (struct target_vfp_sigframe *)regspace;
1916
1917 __get_user(magic, &vfpframe->magic);
1918 __get_user(sz, &vfpframe->size);
1919 if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) {
1920 return 0;
1921 }
1922 for (i = 0; i < 32; i++) {
005e1a0a 1923 __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]);
5f9099d9
PM		 1924 }
1925 __get_user(fpscr, &vfpframe->ufp.fpscr);
1926 vfp_set_fpscr(env, fpscr);
1927 __get_user(fpexc, &vfpframe->ufp_exc.fpexc);
1928 /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid
1929 * and the exception flag is cleared
1930 */
1931 fpexc |= (1 << 30);
1932 fpexc &= ~((1 << 31) | (1 << 28));
1933 env->vfp.xregs[ARM_VFP_FPEXC] = fpexc;
1934 __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
1935 __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
1936 return (abi_ulong*)(vfpframe + 1);
1937}
1938
05390248
AF		 1939static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env,
1940 abi_ulong *regspace)
a59d69da
PM		 1941{
1942 int i;
1943 abi_ulong magic, sz;
1944 struct target_iwmmxt_sigframe *iwmmxtframe;
1945 iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
1946
1947 __get_user(magic, &iwmmxtframe->magic);
1948 __get_user(sz, &iwmmxtframe->size);
1949 if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) {
1950 return 0;
1951 }
1952 for (i = 0; i < 16; i++) {
1953 __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
1954 }
1955 __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
1956 __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
1957 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
1958 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
1959 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
1960 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
1961 return (abi_ulong*)(iwmmxtframe + 1);
1962}
1963
05390248 1964static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr,
a8c33204
PB		 1965 struct target_ucontext_v2 *uc)
1966{
1967 sigset_t host_set;
5f9099d9 1968 abi_ulong *regspace;
a8c33204
PB		 1969
1970 target_to_host_sigset(&host_set, &uc->tuc_sigmask);
1c275925 1971 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
a8c33204
PB		 1972
1973 if (restore_sigcontext(env, &uc->tuc_mcontext))
1974 return 1;
1975
5f9099d9
PM		 1976 /* Restore coprocessor signal frame */
1977 regspace = uc->tuc_regspace;
1978 if (arm_feature(env, ARM_FEATURE_VFP)) {
1979 regspace = restore_sigframe_v2_vfp(env, regspace);
1980 if (!regspace) {
1981 return 1;
1982 }
1983 }
a59d69da
PM		 1984 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1985 regspace = restore_sigframe_v2_iwmmxt(env, regspace);
1986 if (!regspace) {
1987 return 1;
1988 }
1989 }
5f9099d9 1990
a8c33204
PB		 1991 if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
1992 return 1;
1993
1994#if 0
1995 /* Send SIGTRAP if we're single-stepping */
1996 if (ptrace_cancel_bpt(current))
1997 send_sig(SIGTRAP, current, 1);
1998#endif
1999
2000 return 0;
2001}
2002
05390248 2003static long do_sigreturn_v2(CPUARMState *env)
a8c33204
PB		 2004{
2005 abi_ulong frame_addr;
978fae9f 2006 struct sigframe_v2 *frame = NULL;
a8c33204
PB		 2007
2008 /*
2009 * Since we stacked the signal on a 64-bit boundary,
2010 * then 'sp' should be word aligned here. If it's
2011 * not, then the user is trying to mess with us.
2012 */
a8c33204 2013 frame_addr = env->regs[13];
978fae9f
PM		 2014 if (frame_addr & 7) {
2015 goto badframe;
2016 }
2017
a8c33204
PB		 2018 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2019 goto badframe;
2020
2021 if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
2022 goto badframe;
2023
2024 unlock_user_struct(frame, frame_addr, 0);
2025 return env->regs[0];
2026
2027badframe:
2028 unlock_user_struct(frame, frame_addr, 0);
66393fb9 2029 force_sig(TARGET_SIGSEGV /* , current */);
a8c33204
PB		 2030 return 0;
2031}
2032
05390248 2033long do_sigreturn(CPUARMState *env)
a8c33204
PB		 2034{
2035 if (get_osversion() >= 0x020612) {
2036 return do_sigreturn_v2(env);
2037 } else {
2038 return do_sigreturn_v1(env);
2039 }
2040}
2041
05390248 2042static long do_rt_sigreturn_v1(CPUARMState *env)
43fff238 2043{
f8b0aa25 2044 abi_ulong frame_addr;
978fae9f 2045 struct rt_sigframe_v1 *frame = NULL;
a745ec6d
PB		 2046 sigset_t host_set;
2047
2048 /*
2049 * Since we stacked the signal on a 64-bit boundary,
2050 * then 'sp' should be word aligned here. If it's
2051 * not, then the user is trying to mess with us.
2052 */
a745ec6d 2053 frame_addr = env->regs[13];
978fae9f
PM		 2054 if (frame_addr & 7) {
2055 goto badframe;
2056 }
2057
a745ec6d
PB		 2058 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2059 goto badframe;
2060
2061 target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
1c275925 2062 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
a745ec6d
PB		 2063
2064 if (restore_sigcontext(env, &frame->uc.tuc_mcontext))
2065 goto badframe;
2066
2067 if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
2068 goto badframe;
2069
2070#if 0
2071 /* Send SIGTRAP if we're single-stepping */
2072 if (ptrace_cancel_bpt(current))
2073 send_sig(SIGTRAP, current, 1);
2074#endif
2075 unlock_user_struct(frame, frame_addr, 0);
2076 return env->regs[0];
2077
2078badframe:
2079 unlock_user_struct(frame, frame_addr, 0);
66393fb9 2080 force_sig(TARGET_SIGSEGV /* , current */);
a745ec6d
PB		 2081 return 0;
2082}
2083
05390248 2084static long do_rt_sigreturn_v2(CPUARMState *env)
a745ec6d
PB		 2085{
2086 abi_ulong frame_addr;
978fae9f 2087 struct rt_sigframe_v2 *frame = NULL;
43fff238
FB		 2088
2089 /*
2090 * Since we stacked the signal on a 64-bit boundary,
2091 * then 'sp' should be word aligned here. If it's
2092 * not, then the user is trying to mess with us.
2093 */
f8b0aa25 2094 frame_addr = env->regs[13];
978fae9f
PM		 2095 if (frame_addr & 7) {
2096 goto badframe;
2097 }
2098
f8b0aa25
FB		 2099 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2100 goto badframe;
43fff238 2101
a8c33204
PB		 2102 if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
2103 goto badframe;
a04e134a 2104
f8b0aa25 2105 unlock_user_struct(frame, frame_addr, 0);
43fff238
FB		 2106 return env->regs[0];
2107
2108badframe:
f8b0aa25 2109 unlock_user_struct(frame, frame_addr, 0);
66393fb9 2110 force_sig(TARGET_SIGSEGV /* , current */);
43fff238
FB		 2111 return 0;
2112}
2113
05390248 2114long do_rt_sigreturn(CPUARMState *env)
a745ec6d
PB		 2115{
2116 if (get_osversion() >= 0x020612) {
2117 return do_rt_sigreturn_v2(env);
2118 } else {
2119 return do_rt_sigreturn_v1(env);
2120 }
2121}
2122
6d5e216d 2123#elif defined(TARGET_SPARC)
80a9d035 2124
6d5e216d
FB		 2125#define __SUNOS_MAXWIN 31
2126
2127/* This is what SunOS does, so shall I. */
2128struct target_sigcontext {
992f48a0 2129 abi_ulong sigc_onstack; /* state to restore */
6d5e216d 2130
992f48a0
BS		 2131 abi_ulong sigc_mask; /* sigmask to restore */
2132 abi_ulong sigc_sp; /* stack pointer */
2133 abi_ulong sigc_pc; /* program counter */
2134 abi_ulong sigc_npc; /* next program counter */
2135 abi_ulong sigc_psr; /* for condition codes etc */
2136 abi_ulong sigc_g1; /* User uses these two registers */
2137 abi_ulong sigc_o0; /* within the trampoline code. */
6d5e216d
FB		 2138
2139 /* Now comes information regarding the users window set
2140 * at the time of the signal.
2141 */
992f48a0 2142 abi_ulong sigc_oswins; /* outstanding windows */
6d5e216d
FB		 2143
2144 /* stack ptrs for each regwin buf */
2145 char *sigc_spbuf[__SUNOS_MAXWIN];
2146
2147 /* Windows to restore after signal */
2148 struct {
992f48a0
BS		 2149 abi_ulong locals[8];
2150 abi_ulong ins[8];
6d5e216d
FB		 2151 } sigc_wbuf[__SUNOS_MAXWIN];
2152};
2153/* A Sparc stack frame */
2154struct sparc_stackf {
992f48a0 2155 abi_ulong locals[8];
e321c34a
PM		 2156 abi_ulong ins[8];
2157 /* It's simpler to treat fp and callers_pc as elements of ins[]
2158 * since we never need to access them ourselves.
2159 */
6d5e216d 2160 char *structptr;
992f48a0
BS		 2161 abi_ulong xargs[6];
2162 abi_ulong xxargs[1];
6d5e216d
FB		 2163};
2164
2165typedef struct {
2166 struct {
992f48a0
BS		 2167 abi_ulong psr;
2168 abi_ulong pc;
2169 abi_ulong npc;
2170 abi_ulong y;
2171 abi_ulong u_regs[16]; /* globals and ins */
6d5e216d
FB		 2172 } si_regs;
2173 int si_mask;
2174} __siginfo_t;
2175
2176typedef struct {
8954bae3 2177 abi_ulong si_float_regs[32];
6d5e216d
FB		 2178 unsigned long si_fsr;
2179 unsigned long si_fpqdepth;
2180 struct {
2181 unsigned long *insn_addr;
2182 unsigned long insn;
2183 } si_fpqueue [16];
c227f099 2184} qemu_siginfo_fpu_t;
6d5e216d
FB		 2185
2186
2187struct target_signal_frame {
2188 struct sparc_stackf ss;
2189 __siginfo_t info;
f8b0aa25 2190 abi_ulong fpu_save;
992f48a0
BS		 2191 abi_ulong insns[2] __attribute__ ((aligned (8)));
2192 abi_ulong extramask[TARGET_NSIG_WORDS - 1];
2193 abi_ulong extra_size; /* Should be 0 */
c227f099 2194 qemu_siginfo_fpu_t fpu_state;
6d5e216d
FB		 2195};
2196struct target_rt_signal_frame {
2197 struct sparc_stackf ss;
2198 siginfo_t info;
992f48a0 2199 abi_ulong regs[20];
6d5e216d 2200 sigset_t mask;
f8b0aa25 2201 abi_ulong fpu_save;
6d5e216d
FB		 2202 unsigned int insns[2];
2203 stack_t stack;
2204 unsigned int extra_size; /* Should be 0 */
c227f099 2205 qemu_siginfo_fpu_t fpu_state;
6d5e216d
FB		 2206};
2207
e80cfcfc
FB		 2208#define UREG_O0 16
2209#define UREG_O6 22
2210#define UREG_I0 0
2211#define UREG_I1 1
2212#define UREG_I2 2
5bfb56b2
BS		 2213#define UREG_I3 3
2214#define UREG_I4 4
2215#define UREG_I5 5
e80cfcfc
FB		 2216#define UREG_I6 6
2217#define UREG_I7 7
2218#define UREG_L0 8
6d5e216d
FB		 2219#define UREG_FP UREG_I6
2220#define UREG_SP UREG_O6
2221
624f7979 2222static inline abi_ulong get_sigframe(struct target_sigaction *sa,
05390248
AF		 2223 CPUSPARCState *env,
2224 unsigned long framesize)
6d5e216d 2225{
459a4017 2226 abi_ulong sp;
6d5e216d
FB		 2227
2228 sp = env->regwptr[UREG_FP];
6d5e216d
FB		 2229
2230 /* This is the X/Open sanctioned signal stack switching. */
624f7979 2231 if (sa->sa_flags & TARGET_SA_ONSTACK) {
a04e134a
TS		 2232 if (!on_sig_stack(sp)
2233 && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7))
2234 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
6d5e216d 2235 }
459a4017 2236 return sp - framesize;
6d5e216d
FB		 2237}
2238
2239static int
05390248 2240setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
6d5e216d
FB		 2241{
2242 int err = 0, i;
2243
1d8b512b
RV		 2244 __put_user(env->psr, &si->si_regs.psr);
2245 __put_user(env->pc, &si->si_regs.pc);
2246 __put_user(env->npc, &si->si_regs.npc);
2247 __put_user(env->y, &si->si_regs.y);
a315a145 2248 for (i=0; i < 8; i++) {
1d8b512b 2249 __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
6d5e216d 2250 }
a315a145 2251 for (i=0; i < 8; i++) {
1d8b512b 2252 __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
6d5e216d 2253 }
1d8b512b 2254 __put_user(mask, &si->si_mask);
6d5e216d
FB		 2255 return err;
2256}
e80cfcfc 2257
80a9d035 2258#if 0
6d5e216d
FB		 2259static int
2260setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
05390248 2261 CPUSPARCState *env, unsigned long mask)
6d5e216d
FB		 2262{
2263 int err = 0;
2264
1d8b512b
RV		 2265 __put_user(mask, &sc->sigc_mask);
2266 __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
2267 __put_user(env->pc, &sc->sigc_pc);
2268 __put_user(env->npc, &sc->sigc_npc);
2269 __put_user(env->psr, &sc->sigc_psr);
2270 __put_user(env->gregs[1], &sc->sigc_g1);
2271 __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
6d5e216d
FB		 2272
2273 return err;
2274}
80a9d035 2275#endif
6d5e216d
FB		 2276#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
2277
624f7979 2278static void setup_frame(int sig, struct target_sigaction *ka,
05390248 2279 target_sigset_t *set, CPUSPARCState *env)
6d5e216d 2280{
459a4017 2281 abi_ulong sf_addr;
6d5e216d
FB		 2282 struct target_signal_frame *sf;
2283 int sigframe_size, err, i;
2284
2285 /* 1. Make sure everything is clean */
2286 //synchronize_user_stack();
2287
2288 sigframe_size = NF_ALIGNEDSZ;
459a4017 2289 sf_addr = get_sigframe(ka, env, sigframe_size);
6d5e216d 2290
459a4017
FB		 2291 sf = lock_user(VERIFY_WRITE, sf_addr,
2292 sizeof(struct target_signal_frame), 0);
2293 if (!sf)
2294 goto sigsegv;
2295
e80cfcfc 2296 //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
6d5e216d
FB		 2297#if 0
2298 if (invalid_frame_pointer(sf, sigframe_size))
2299 goto sigill_and_return;
2300#endif
2301 /* 2. Save the current process state */
2302 err = setup___siginfo(&sf->info, env, set->sig[0]);
1d8b512b 2303 __put_user(0, &sf->extra_size);
6d5e216d 2304
1d8b512b
RV		 2305 //save_fpu_state(regs, &sf->fpu_state);
2306 //__put_user(&sf->fpu_state, &sf->fpu_save);
6d5e216d 2307
1d8b512b 2308 __put_user(set->sig[0], &sf->info.si_mask);
6d5e216d 2309 for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
1d8b512b 2310 __put_user(set->sig[i + 1], &sf->extramask[i]);
6d5e216d
FB		 2311 }
2312
a315a145 2313 for (i = 0; i < 8; i++) {
1d8b512b 2314 __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
6d5e216d 2315 }
a315a145 2316 for (i = 0; i < 8; i++) {
1d8b512b 2317 __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
6d5e216d 2318 }
6d5e216d
FB		 2319 if (err)
2320 goto sigsegv;
2321
2322 /* 3. signal handler back-trampoline and parameters */
459a4017 2323 env->regwptr[UREG_FP] = sf_addr;
6d5e216d 2324 env->regwptr[UREG_I0] = sig;
459a4017
FB		 2325 env->regwptr[UREG_I1] = sf_addr +
2326 offsetof(struct target_signal_frame, info);
2327 env->regwptr[UREG_I2] = sf_addr +
2328 offsetof(struct target_signal_frame, info);
6d5e216d
FB		 2329
2330 /* 4. signal handler */
624f7979 2331 env->pc = ka->_sa_handler;
6d5e216d
FB		 2332 env->npc = (env->pc + 4);
2333 /* 5. return to kernel instructions */
624f7979
PB		 2334 if (ka->sa_restorer)
2335 env->regwptr[UREG_I7] = ka->sa_restorer;
6d5e216d 2336 else {
775b58d8 2337 uint32_t val32;
459a4017
FB		 2338
2339 env->regwptr[UREG_I7] = sf_addr +
2340 offsetof(struct target_signal_frame, insns) - 2 * 4;
6d5e216d
FB		 2341
2342 /* mov __NR_sigreturn, %g1 */
775b58d8 2343 val32 = 0x821020d8;
1d8b512b 2344 __put_user(val32, &sf->insns[0]);
6d5e216d
FB		 2345
2346 /* t 0x10 */
775b58d8 2347 val32 = 0x91d02010;
1d8b512b 2348 __put_user(val32, &sf->insns[1]);
6d5e216d
FB		 2349 if (err)
2350 goto sigsegv;
2351
2352 /* Flush instruction space. */
2353 //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
80a9d035 2354 // tb_flush(env);
6d5e216d 2355 }
459a4017 2356 unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
6d5e216d 2357 return;
459a4017
FB		 2358#if 0
2359sigill_and_return:
6d5e216d 2360 force_sig(TARGET_SIGILL);
459a4017 2361#endif
6d5e216d 2362sigsegv:
e80cfcfc 2363 //fprintf(stderr, "force_sig\n");
459a4017 2364 unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
6d5e216d
FB		 2365 force_sig(TARGET_SIGSEGV);
2366}
6d5e216d 2367
624f7979 2368static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2369 target_siginfo_t *info,
05390248 2370 target_sigset_t *set, CPUSPARCState *env)
6d5e216d
FB		 2371{
2372 fprintf(stderr, "setup_rt_frame: not implemented\n");
2373}
2374
05390248 2375long do_sigreturn(CPUSPARCState *env)
6d5e216d 2376{
f8b0aa25 2377 abi_ulong sf_addr;
6d5e216d 2378 struct target_signal_frame *sf;
e80cfcfc 2379 uint32_t up_psr, pc, npc;
c227f099 2380 target_sigset_t set;
e80cfcfc 2381 sigset_t host_set;
1d8b512b 2382 int err=0, i;
6d5e216d 2383
f8b0aa25
FB		 2384 sf_addr = env->regwptr[UREG_FP];
2385 if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1))
2386 goto segv_and_exit;
80a9d035 2387#if 0
e80cfcfc
FB		 2388 fprintf(stderr, "sigreturn\n");
2389 fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
80a9d035 2390#endif
e80cfcfc 2391 //cpu_dump_state(env, stderr, fprintf, 0);
6d5e216d
FB		 2392
2393 /* 1. Make sure we are not getting garbage from the user */
6d5e216d 2394
f8b0aa25 2395 if (sf_addr & 3)
6d5e216d
FB		 2396 goto segv_and_exit;
2397
1d8b512b
RV		 2398 __get_user(pc, &sf->info.si_regs.pc);
2399 __get_user(npc, &sf->info.si_regs.npc);
6d5e216d 2400
6d5e216d
FB		 2401 if ((pc | npc) & 3)
2402 goto segv_and_exit;
2403
2404 /* 2. Restore the state */
1d8b512b 2405 __get_user(up_psr, &sf->info.si_regs.psr);
e80cfcfc 2406
6d5e216d 2407 /* User can only change condition codes and FPU enabling in %psr. */
a315a145
FB		 2408 env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
2409 | (env->psr & ~(PSR_ICC /* | PSR_EF */));
2410
2411 env->pc = pc;
2412 env->npc = npc;
1d8b512b 2413 __get_user(env->y, &sf->info.si_regs.y);
a315a145 2414 for (i=0; i < 8; i++) {
1d8b512b 2415 __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
e80cfcfc 2416 }
a315a145 2417 for (i=0; i < 8; i++) {
1d8b512b 2418 __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
e80cfcfc 2419 }
6d5e216d 2420
2aec3a27
PM		 2421 /* FIXME: implement FPU save/restore:
2422 * __get_user(fpu_save, &sf->fpu_save);
2423 * if (fpu_save)
2424 * err |= restore_fpu_state(env, fpu_save);
2425 */
6d5e216d
FB		 2426
2427 /* This is pretty much atomic, no amount locking would prevent
2428 * the races which exist anyways.
2429 */
1d8b512b 2430 __get_user(set.sig[0], &sf->info.si_mask);
e80cfcfc 2431 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 2432 __get_user(set.sig[i], &sf->extramask[i - 1]);
e80cfcfc
FB		 2433 }
2434
2435 target_to_host_sigset_internal(&host_set, &set);
1c275925 2436 do_sigprocmask(SIG_SETMASK, &host_set, NULL);
6d5e216d
FB		 2437
2438 if (err)
2439 goto segv_and_exit;
f8b0aa25 2440 unlock_user_struct(sf, sf_addr, 0);
6d5e216d
FB		 2441 return env->regwptr[0];
2442
2443segv_and_exit:
f8b0aa25 2444 unlock_user_struct(sf, sf_addr, 0);
6d5e216d
FB		 2445 force_sig(TARGET_SIGSEGV);
2446}
2447
05390248 2448long do_rt_sigreturn(CPUSPARCState *env)
6d5e216d
FB		 2449{
2450 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 2451 return -TARGET_ENOSYS;
6d5e216d
FB		 2452}
2453
459a4017 2454#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
5bfb56b2
BS		 2455#define MC_TSTATE 0
2456#define MC_PC 1
2457#define MC_NPC 2
2458#define MC_Y 3
2459#define MC_G1 4
2460#define MC_G2 5
2461#define MC_G3 6
2462#define MC_G4 7
2463#define MC_G5 8
2464#define MC_G6 9
2465#define MC_G7 10
2466#define MC_O0 11
2467#define MC_O1 12
2468#define MC_O2 13
2469#define MC_O3 14
2470#define MC_O4 15
2471#define MC_O5 16
2472#define MC_O6 17
2473#define MC_O7 18
2474#define MC_NGREG 19
2475
c227f099
AL		 2476typedef abi_ulong target_mc_greg_t;
2477typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG];
5bfb56b2
BS		 2478
2479struct target_mc_fq {
992f48a0 2480 abi_ulong *mcfq_addr;
5bfb56b2
BS		 2481 uint32_t mcfq_insn;
2482};
2483
2484struct target_mc_fpu {
2485 union {
2486 uint32_t sregs[32];
2487 uint64_t dregs[32];
2488 //uint128_t qregs[16];
2489 } mcfpu_fregs;
992f48a0
BS		 2490 abi_ulong mcfpu_fsr;
2491 abi_ulong mcfpu_fprs;
2492 abi_ulong mcfpu_gsr;
5bfb56b2
BS		 2493 struct target_mc_fq *mcfpu_fq;
2494 unsigned char mcfpu_qcnt;
2495 unsigned char mcfpu_qentsz;
2496 unsigned char mcfpu_enab;
2497};
c227f099 2498typedef struct target_mc_fpu target_mc_fpu_t;
5bfb56b2
BS		 2499
2500typedef struct {
c227f099
AL		 2501 target_mc_gregset_t mc_gregs;
2502 target_mc_greg_t mc_fp;
2503 target_mc_greg_t mc_i7;
2504 target_mc_fpu_t mc_fpregs;
2505} target_mcontext_t;
5bfb56b2
BS		 2506
2507struct target_ucontext {
60e99246
AJ		 2508 struct target_ucontext *tuc_link;
2509 abi_ulong tuc_flags;
2510 target_sigset_t tuc_sigmask;
2511 target_mcontext_t tuc_mcontext;
5bfb56b2
BS		 2512};
2513
2514/* A V9 register window */
2515struct target_reg_window {
992f48a0
BS		 2516 abi_ulong locals[8];
2517 abi_ulong ins[8];
5bfb56b2
BS		 2518};
2519
2520#define TARGET_STACK_BIAS 2047
2521
2522/* {set, get}context() needed for 64-bit SparcLinux userland. */
2523void sparc64_set_context(CPUSPARCState *env)
2524{
459a4017
FB		 2525 abi_ulong ucp_addr;
2526 struct target_ucontext *ucp;
c227f099 2527 target_mc_gregset_t *grp;
992f48a0 2528 abi_ulong pc, npc, tstate;
459a4017 2529 abi_ulong fp, i7, w_addr;
5bfb56b2 2530 unsigned int i;
5bfb56b2 2531
459a4017
FB		 2532 ucp_addr = env->regwptr[UREG_I0];
2533 if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1))
2534 goto do_sigsegv;
60e99246 2535 grp = &ucp->tuc_mcontext.mc_gregs;
1d8b512b
RV		 2536 __get_user(pc, &((*grp)[MC_PC]));
2537 __get_user(npc, &((*grp)[MC_NPC]));
be3ef5c7 2538 if ((pc | npc) & 3)
5bfb56b2
BS		 2539 goto do_sigsegv;
2540 if (env->regwptr[UREG_I1]) {
c227f099 2541 target_sigset_t target_set;
5bfb56b2
BS		 2542 sigset_t set;
2543
2544 if (TARGET_NSIG_WORDS == 1) {
be3ef5c7 2545 __get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0]);
5bfb56b2 2546 } else {
459a4017 2547 abi_ulong *src, *dst;
60e99246 2548 src = ucp->tuc_sigmask.sig;
459a4017 2549 dst = target_set.sig;
0d9e61c2 2550 for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
1d8b512b 2551 __get_user(*dst, src);
0d9e61c2 2552 }
5bfb56b2
BS		 2553 }
2554 target_to_host_sigset_internal(&set, &target_set);
1c275925 2555 do_sigprocmask(SIG_SETMASK, &set, NULL);
5bfb56b2
BS		 2556 }
2557 env->pc = pc;
2558 env->npc = npc;
1d8b512b
RV		 2559 __get_user(env->y, &((*grp)[MC_Y]));
2560 __get_user(tstate, &((*grp)[MC_TSTATE]));
5bfb56b2 2561 env->asi = (tstate >> 24) & 0xff;
5a834bb4
BS		 2562 cpu_put_ccr(env, tstate >> 32);
2563 cpu_put_cwp64(env, tstate & 0x1f);
1d8b512b
RV		 2564 __get_user(env->gregs[1], (&(*grp)[MC_G1]));
2565 __get_user(env->gregs[2], (&(*grp)[MC_G2]));
2566 __get_user(env->gregs[3], (&(*grp)[MC_G3]));
2567 __get_user(env->gregs[4], (&(*grp)[MC_G4]));
2568 __get_user(env->gregs[5], (&(*grp)[MC_G5]));
2569 __get_user(env->gregs[6], (&(*grp)[MC_G6]));
2570 __get_user(env->gregs[7], (&(*grp)[MC_G7]));
2571 __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0]));
2572 __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1]));
2573 __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2]));
2574 __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3]));
2575 __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4]));
2576 __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5]));
2577 __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6]));
2578 __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7]));
2579
2580 __get_user(fp, &(ucp->tuc_mcontext.mc_fp));
2581 __get_user(i7, &(ucp->tuc_mcontext.mc_i7));
579a97f7 2582
459a4017
FB		 2583 w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
2584 if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
2585 abi_ulong) != 0)
2586 goto do_sigsegv;
2587 if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
2588 abi_ulong) != 0)
2589 goto do_sigsegv;
c7b016ba
PM		 2590 /* FIXME this does not match how the kernel handles the FPU in
2591 * its sparc64_set_context implementation. In particular the FPU
2592 * is only restored if fenab is non-zero in:
2593 * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab));
2594 */
be3ef5c7 2595 __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs));
459a4017 2596 {
30038fd8
RH		 2597 uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
2598 for (i = 0; i < 64; i++, src++) {
2599 if (i & 1) {
1d8b512b 2600 __get_user(env->fpr[i/2].l.lower, src);
30038fd8 2601 } else {
1d8b512b 2602 __get_user(env->fpr[i/2].l.upper, src);
30038fd8
RH		 2603 }
2604 }
459a4017 2605 }
1d8b512b
RV		 2606 __get_user(env->fsr,
2607 &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr));
2608 __get_user(env->gsr,
2609 &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr));
459a4017 2610 unlock_user_struct(ucp, ucp_addr, 0);
5bfb56b2
BS		 2611 return;
2612 do_sigsegv:
459a4017 2613 unlock_user_struct(ucp, ucp_addr, 0);
66393fb9 2614 force_sig(TARGET_SIGSEGV);
5bfb56b2
BS		 2615}
2616
2617void sparc64_get_context(CPUSPARCState *env)
2618{
459a4017
FB		 2619 abi_ulong ucp_addr;
2620 struct target_ucontext *ucp;
c227f099
AL		 2621 target_mc_gregset_t *grp;
2622 target_mcontext_t *mcp;
459a4017 2623 abi_ulong fp, i7, w_addr;
5bfb56b2
BS		 2624 int err;
2625 unsigned int i;
c227f099 2626 target_sigset_t target_set;
5bfb56b2
BS		 2627 sigset_t set;
2628
459a4017
FB		 2629 ucp_addr = env->regwptr[UREG_I0];
2630 if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0))
2631 goto do_sigsegv;
2632
60e99246 2633 mcp = &ucp->tuc_mcontext;
5bfb56b2
BS		 2634 grp = &mcp->mc_gregs;
2635
2636 /* Skip over the trap instruction, first. */
2637 env->pc = env->npc;
2638 env->npc += 4;
2639
2640 err = 0;
2641
1c275925 2642 do_sigprocmask(0, NULL, &set);
5bfb56b2 2643 host_to_target_sigset_internal(&target_set, &set);
459a4017 2644 if (TARGET_NSIG_WORDS == 1) {
1d8b512b
RV		 2645 __put_user(target_set.sig[0],
2646 (abi_ulong *)&ucp->tuc_sigmask);
459a4017
FB		 2647 } else {
2648 abi_ulong *src, *dst;
2649 src = target_set.sig;
60e99246 2650 dst = ucp->tuc_sigmask.sig;
0d9e61c2 2651 for (i = 0; i < TARGET_NSIG_WORDS; i++, dst++, src++) {
1d8b512b 2652 __put_user(*src, dst);
0d9e61c2 2653 }
5bfb56b2
BS		 2654 if (err)
2655 goto do_sigsegv;
2656 }
2657
459a4017 2658 /* XXX: tstate must be saved properly */
1d8b512b
RV		 2659 // __put_user(env->tstate, &((*grp)[MC_TSTATE]));
2660 __put_user(env->pc, &((*grp)[MC_PC]));
2661 __put_user(env->npc, &((*grp)[MC_NPC]));
2662 __put_user(env->y, &((*grp)[MC_Y]));
2663 __put_user(env->gregs[1], &((*grp)[MC_G1]));
2664 __put_user(env->gregs[2], &((*grp)[MC_G2]));
2665 __put_user(env->gregs[3], &((*grp)[MC_G3]));
2666 __put_user(env->gregs[4], &((*grp)[MC_G4]));
2667 __put_user(env->gregs[5], &((*grp)[MC_G5]));
2668 __put_user(env->gregs[6], &((*grp)[MC_G6]));
2669 __put_user(env->gregs[7], &((*grp)[MC_G7]));
2670 __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0]));
2671 __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1]));
2672 __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2]));
2673 __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3]));
2674 __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4]));
2675 __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5]));
2676 __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6]));
2677 __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7]));
579a97f7 2678
459a4017
FB		 2679 w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
2680 fp = i7 = 0;
2681 if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
2682 abi_ulong) != 0)
2683 goto do_sigsegv;
2684 if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
2685 abi_ulong) != 0)
2686 goto do_sigsegv;
1d8b512b
RV		 2687 __put_user(fp, &(mcp->mc_fp));
2688 __put_user(i7, &(mcp->mc_i7));
5bfb56b2 2689
459a4017 2690 {
30038fd8
RH		 2691 uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
2692 for (i = 0; i < 64; i++, dst++) {
2693 if (i & 1) {
1d8b512b 2694 __put_user(env->fpr[i/2].l.lower, dst);
30038fd8 2695 } else {
1d8b512b 2696 __put_user(env->fpr[i/2].l.upper, dst);
30038fd8
RH		 2697 }
2698 }
459a4017 2699 }
1d8b512b
RV		 2700 __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr));
2701 __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr));
2702 __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs));
5bfb56b2
BS		 2703
2704 if (err)
2705 goto do_sigsegv;
459a4017 2706 unlock_user_struct(ucp, ucp_addr, 1);
5bfb56b2
BS		 2707 return;
2708 do_sigsegv:
459a4017 2709 unlock_user_struct(ucp, ucp_addr, 1);
66393fb9 2710 force_sig(TARGET_SIGSEGV);
5bfb56b2
BS		 2711}
2712#endif
ff970904 2713#elif defined(TARGET_MIPS) || defined(TARGET_MIPS64)
106ec879 2714
ff970904 2715# if defined(TARGET_ABI_MIPSO32)
106ec879
FB		 2716struct target_sigcontext {
2717 uint32_t sc_regmask; /* Unused */
2718 uint32_t sc_status;
2719 uint64_t sc_pc;
2720 uint64_t sc_regs[32];
2721 uint64_t sc_fpregs[32];
2722 uint32_t sc_ownedfp; /* Unused */
2723 uint32_t sc_fpc_csr;
2724 uint32_t sc_fpc_eir; /* Unused */
2725 uint32_t sc_used_math;
2726 uint32_t sc_dsp; /* dsp status, was sc_ssflags */
94c5495d 2727 uint32_t pad0;
106ec879
FB		 2728 uint64_t sc_mdhi;
2729 uint64_t sc_mdlo;
2730 target_ulong sc_hi1; /* Was sc_cause */
2731 target_ulong sc_lo1; /* Was sc_badvaddr */
2732 target_ulong sc_hi2; /* Was sc_sigset[4] */
2733 target_ulong sc_lo2;
2734 target_ulong sc_hi3;
2735 target_ulong sc_lo3;
2736};
ff970904
RH		 2737# else /* N32 || N64 */
2738struct target_sigcontext {
2739 uint64_t sc_regs[32];
2740 uint64_t sc_fpregs[32];
2741 uint64_t sc_mdhi;
2742 uint64_t sc_hi1;
2743 uint64_t sc_hi2;
2744 uint64_t sc_hi3;
2745 uint64_t sc_mdlo;
2746 uint64_t sc_lo1;
2747 uint64_t sc_lo2;
2748 uint64_t sc_lo3;
2749 uint64_t sc_pc;
2750 uint32_t sc_fpc_csr;
2751 uint32_t sc_used_math;
2752 uint32_t sc_dsp;
2753 uint32_t sc_reserved;
2754};
2755# endif /* O32 */
106ec879
FB		 2756
2757struct sigframe {
2758 uint32_t sf_ass[4]; /* argument save space for o32 */
2759 uint32_t sf_code[2]; /* signal trampoline */
2760 struct target_sigcontext sf_sc;
c227f099 2761 target_sigset_t sf_mask;
106ec879
FB		 2762};
2763
0b1bcb00 2764struct target_ucontext {
60e99246
AJ		 2765 target_ulong tuc_flags;
2766 target_ulong tuc_link;
2767 target_stack_t tuc_stack;
94c5495d 2768 target_ulong pad0;
60e99246
AJ		 2769 struct target_sigcontext tuc_mcontext;
2770 target_sigset_t tuc_sigmask;
0b1bcb00
PB		 2771};
2772
2773struct target_rt_sigframe {
2774 uint32_t rs_ass[4]; /* argument save space for o32 */
2775 uint32_t rs_code[2]; /* signal trampoline */
2776 struct target_siginfo rs_info;
2777 struct target_ucontext rs_uc;
2778};
2779
106ec879
FB		 2780/* Install trampoline to jump back from signal handler */
2781static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall)
2782{
084d0497 2783 int err = 0;
106ec879
FB		 2784
2785 /*
084d0497
RH		 2786 * Set up the return code ...
2787 *
2788 * li v0, __NR__foo_sigreturn
2789 * syscall
2790 */
106ec879 2791
1d8b512b
RV		 2792 __put_user(0x24020000 + syscall, tramp + 0);
2793 __put_user(0x0000000c , tramp + 1);
106ec879
FB		 2794 return err;
2795}
2796
41ecc72b
RV		 2797static inline void setup_sigcontext(CPUMIPSState *regs,
2798 struct target_sigcontext *sc)
106ec879 2799{
084d0497 2800 int i;
106ec879 2801
1d8b512b 2802 __put_user(exception_resume_pc(regs), &sc->sc_pc);
1239b472 2803 regs->hflags &= ~MIPS_HFLAG_BMASK;
106ec879 2804
084d0497
RH		 2805 __put_user(0, &sc->sc_regs[0]);
2806 for (i = 1; i < 32; ++i) {
1d8b512b 2807 __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
084d0497 2808 }
106ec879 2809
1d8b512b
RV		 2810 __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
2811 __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
106ec879 2812
084d0497
RH		 2813 /* Rather than checking for dsp existence, always copy. The storage
2814 would just be garbage otherwise. */
1d8b512b
RV		 2815 __put_user(regs->active_tc.HI[1], &sc->sc_hi1);
2816 __put_user(regs->active_tc.HI[2], &sc->sc_hi2);
2817 __put_user(regs->active_tc.HI[3], &sc->sc_hi3);
2818 __put_user(regs->active_tc.LO[1], &sc->sc_lo1);
2819 __put_user(regs->active_tc.LO[2], &sc->sc_lo2);
2820 __put_user(regs->active_tc.LO[3], &sc->sc_lo3);
084d0497
RH		 2821 {
2822 uint32_t dsp = cpu_rddsp(0x3ff, regs);
1d8b512b 2823 __put_user(dsp, &sc->sc_dsp);
106ec879 2824 }
106ec879 2825
1d8b512b 2826 __put_user(1, &sc->sc_used_math);
106ec879 2827
084d0497 2828 for (i = 0; i < 32; ++i) {
1d8b512b 2829 __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
106ec879 2830 }
106ec879
FB		 2831}
2832
016d2e1d 2833static inline void
05390248 2834restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
106ec879 2835{
084d0497 2836 int i;
106ec879 2837
1d8b512b 2838 __get_user(regs->CP0_EPC, &sc->sc_pc);
106ec879 2839
1d8b512b
RV		 2840 __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
2841 __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
106ec879 2842
084d0497 2843 for (i = 1; i < 32; ++i) {
1d8b512b 2844 __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
106ec879 2845 }
106ec879 2846
1d8b512b
RV		 2847 __get_user(regs->active_tc.HI[1], &sc->sc_hi1);
2848 __get_user(regs->active_tc.HI[2], &sc->sc_hi2);
2849 __get_user(regs->active_tc.HI[3], &sc->sc_hi3);
2850 __get_user(regs->active_tc.LO[1], &sc->sc_lo1);
2851 __get_user(regs->active_tc.LO[2], &sc->sc_lo2);
2852 __get_user(regs->active_tc.LO[3], &sc->sc_lo3);
084d0497
RH		 2853 {
2854 uint32_t dsp;
1d8b512b 2855 __get_user(dsp, &sc->sc_dsp);
084d0497
RH		 2856 cpu_wrdsp(dsp, 0x3ff, regs);
2857 }
106ec879 2858
084d0497 2859 for (i = 0; i < 32; ++i) {
1d8b512b 2860 __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
106ec879 2861 }
106ec879 2862}
ff970904 2863
106ec879
FB		 2864/*
2865 * Determine which stack to use..
2866 */
579a97f7 2867static inline abi_ulong
05390248 2868get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t frame_size)
106ec879
FB		 2869{
2870 unsigned long sp;
2871
2872 /* Default to using normal stack */
b5dc7732 2873 sp = regs->active_tc.gpr[29];
106ec879
FB		 2874
2875 /*
93148aa5 2876 * FPU emulator may have its own trampoline active just
106ec879
FB		 2877 * above the user stack, 16-bytes before the next lowest
2878 * 16 byte boundary. Try to avoid trashing it.
2879 */
2880 sp -= 32;
2881
106ec879 2882 /* This is the X/Open sanctioned signal stack switching. */
624f7979 2883 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
a04e134a
TS		 2884 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
2885 }
106ec879 2886
579a97f7 2887 return (sp - frame_size) & ~7;
106ec879
FB		 2888}
2889
ea3164aa
KCY		 2890static void mips_set_hflags_isa_mode_from_pc(CPUMIPSState *env)
2891{
2892 if (env->insn_flags & (ASE_MIPS16 | ASE_MICROMIPS)) {
2893 env->hflags &= ~MIPS_HFLAG_M16;
2894 env->hflags |= (env->active_tc.PC & 1) << MIPS_HFLAG_M16_SHIFT;
2895 env->active_tc.PC &= ~(target_ulong) 1;
2896 }
2897}
2898
ff970904 2899# if defined(TARGET_ABI_MIPSO32)
579a97f7 2900/* compare linux/arch/mips/kernel/signal.c:setup_frame() */
624f7979 2901static void setup_frame(int sig, struct target_sigaction * ka,
05390248 2902 target_sigset_t *set, CPUMIPSState *regs)
106ec879
FB		 2903{
2904 struct sigframe *frame;
579a97f7 2905 abi_ulong frame_addr;
106ec879
FB		 2906 int i;
2907
579a97f7
FB		 2908 frame_addr = get_sigframe(ka, regs, sizeof(*frame));
2909 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
106ec879
FB		 2910 goto give_sigsegv;
2911
2912 install_sigtramp(frame->sf_code, TARGET_NR_sigreturn);
2913
41ecc72b 2914 setup_sigcontext(regs, &frame->sf_sc);
106ec879
FB		 2915
2916 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
0188fadb 2917 __put_user(set->sig[i], &frame->sf_mask.sig[i]);
106ec879
FB		 2918 }
2919
2920 /*
2921 * Arguments to signal handler:
2922 *
2923 * a0 = signal number
2924 * a1 = 0 (should be cause)
2925 * a2 = pointer to struct sigcontext
2926 *
2927 * $25 and PC point to the signal handler, $29 points to the
2928 * struct sigframe.
2929 */
b5dc7732
TS		 2930 regs->active_tc.gpr[ 4] = sig;
2931 regs->active_tc.gpr[ 5] = 0;
2932 regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc);
2933 regs->active_tc.gpr[29] = frame_addr;
2934 regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code);
106ec879
FB		 2935 /* The original kernel code sets CP0_EPC to the handler
2936 * since it returns to userland using eret
2937 * we cannot do this here, and we must set PC directly */
b5dc7732 2938 regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler;
ea3164aa 2939 mips_set_hflags_isa_mode_from_pc(regs);
579a97f7 2940 unlock_user_struct(frame, frame_addr, 1);
106ec879
FB		 2941 return;
2942
2943give_sigsegv:
2944 force_sig(TARGET_SIGSEGV/*, current*/);
106ec879
FB		 2945}
2946
05390248 2947long do_sigreturn(CPUMIPSState *regs)
106ec879 2948{
388bb21a 2949 struct sigframe *frame;
579a97f7 2950 abi_ulong frame_addr;
388bb21a 2951 sigset_t blocked;
c227f099 2952 target_sigset_t target_set;
388bb21a 2953 int i;
106ec879
FB		 2954
2955#if defined(DEBUG_SIGNAL)
388bb21a 2956 fprintf(stderr, "do_sigreturn\n");
106ec879 2957#endif
b5dc7732 2958 frame_addr = regs->active_tc.gpr[29];
579a97f7 2959 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
106ec879
FB		 2960 goto badframe;
2961
388bb21a 2962 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
f5f601af 2963 __get_user(target_set.sig[i], &frame->sf_mask.sig[i]);
388bb21a 2964 }
106ec879 2965
388bb21a 2966 target_to_host_sigset_internal(&blocked, &target_set);
1c275925 2967 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
106ec879 2968
016d2e1d 2969 restore_sigcontext(regs, &frame->sf_sc);
106ec879
FB		 2970
2971#if 0
388bb21a
TS		 2972 /*
2973 * Don't let your children do this ...
2974 */
2975 __asm__ __volatile__(
106ec879
FB		 2976 "move\t$29, %0\n\t"
2977 "j\tsyscall_exit"
2978 :/* no outputs */
2979 :"r" (&regs));
388bb21a 2980 /* Unreached */
106ec879 2981#endif
3b46e624 2982
b5dc7732 2983 regs->active_tc.PC = regs->CP0_EPC;
ea3164aa 2984 mips_set_hflags_isa_mode_from_pc(regs);
388bb21a 2985 /* I am not sure this is right, but it seems to work
106ec879
FB		 2986 * maybe a problem with nested signals ? */
2987 regs->CP0_EPC = 0;
0b1bcb00 2988 return -TARGET_QEMU_ESIGRETURN;
106ec879
FB		 2989
2990badframe:
388bb21a
TS		 2991 force_sig(TARGET_SIGSEGV/*, current*/);
2992 return 0;
106ec879 2993}
ff970904 2994# endif /* O32 */
106ec879 2995
624f7979 2996static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2997 target_siginfo_t *info,
05390248 2998 target_sigset_t *set, CPUMIPSState *env)
106ec879 2999{
0b1bcb00
PB		 3000 struct target_rt_sigframe *frame;
3001 abi_ulong frame_addr;
3002 int i;
3003
3004 frame_addr = get_sigframe(ka, env, sizeof(*frame));
3005 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3006 goto give_sigsegv;
3007
3008 install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
3009
3010 copy_siginfo_to_user(&frame->rs_info, info);
3011
60e99246
AJ		 3012 __put_user(0, &frame->rs_uc.tuc_flags);
3013 __put_user(0, &frame->rs_uc.tuc_link);
3014 __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp);
3015 __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size);
0b1bcb00 3016 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
60e99246 3017 &frame->rs_uc.tuc_stack.ss_flags);
0b1bcb00 3018
60e99246 3019 setup_sigcontext(env, &frame->rs_uc.tuc_mcontext);
0b1bcb00
PB		 3020
3021 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
60e99246 3022 __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]);
0b1bcb00
PB		 3023 }
3024
3025 /*
3026 * Arguments to signal handler:
3027 *
3028 * a0 = signal number
02d2bd5d 3029 * a1 = pointer to siginfo_t
0b1bcb00
PB		 3030 * a2 = pointer to struct ucontext
3031 *
3032 * $25 and PC point to the signal handler, $29 points to the
3033 * struct sigframe.
3034 */
3035 env->active_tc.gpr[ 4] = sig;
3036 env->active_tc.gpr[ 5] = frame_addr
3037 + offsetof(struct target_rt_sigframe, rs_info);
3038 env->active_tc.gpr[ 6] = frame_addr
3039 + offsetof(struct target_rt_sigframe, rs_uc);
3040 env->active_tc.gpr[29] = frame_addr;
3041 env->active_tc.gpr[31] = frame_addr
3042 + offsetof(struct target_rt_sigframe, rs_code);
3043 /* The original kernel code sets CP0_EPC to the handler
3044 * since it returns to userland using eret
3045 * we cannot do this here, and we must set PC directly */
3046 env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler;
ea3164aa 3047 mips_set_hflags_isa_mode_from_pc(env);
0b1bcb00
PB		 3048 unlock_user_struct(frame, frame_addr, 1);
3049 return;
3050
3051give_sigsegv:
3052 unlock_user_struct(frame, frame_addr, 1);
3053 force_sig(TARGET_SIGSEGV/*, current*/);
106ec879
FB		 3054}
3055
05390248 3056long do_rt_sigreturn(CPUMIPSState *env)
106ec879 3057{
0b1bcb00
PB		 3058 struct target_rt_sigframe *frame;
3059 abi_ulong frame_addr;
3060 sigset_t blocked;
3061
3062#if defined(DEBUG_SIGNAL)
3063 fprintf(stderr, "do_rt_sigreturn\n");
3064#endif
3065 frame_addr = env->active_tc.gpr[29];
3066 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3067 goto badframe;
3068
60e99246 3069 target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
1c275925 3070 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
0b1bcb00 3071
016d2e1d 3072 restore_sigcontext(env, &frame->rs_uc.tuc_mcontext);
0b1bcb00
PB		 3073
3074 if (do_sigaltstack(frame_addr +
60e99246 3075 offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
0b1bcb00
PB		 3076 0, get_sp_from_cpustate(env)) == -EFAULT)
3077 goto badframe;
3078
3079 env->active_tc.PC = env->CP0_EPC;
ea3164aa 3080 mips_set_hflags_isa_mode_from_pc(env);
0b1bcb00
PB		 3081 /* I am not sure this is right, but it seems to work
3082 * maybe a problem with nested signals ? */
3083 env->CP0_EPC = 0;
3084 return -TARGET_QEMU_ESIGRETURN;
3085
3086badframe:
3087 force_sig(TARGET_SIGSEGV/*, current*/);
3088 return 0;
106ec879 3089}
6d5e216d 3090
c3b5bc8a
TS		 3091#elif defined(TARGET_SH4)
3092
3093/*
3094 * code and data structures from linux kernel:
3095 * include/asm-sh/sigcontext.h
3096 * arch/sh/kernel/signal.c
3097 */
3098
3099struct target_sigcontext {
3100 target_ulong oldmask;
3101
3102 /* CPU registers */
3103 target_ulong sc_gregs[16];
3104 target_ulong sc_pc;
3105 target_ulong sc_pr;
3106 target_ulong sc_sr;
3107 target_ulong sc_gbr;
3108 target_ulong sc_mach;
3109 target_ulong sc_macl;
3110
3111 /* FPU registers */
3112 target_ulong sc_fpregs[16];
3113 target_ulong sc_xfpregs[16];
3114 unsigned int sc_fpscr;
3115 unsigned int sc_fpul;
3116 unsigned int sc_ownedfp;
3117};
3118
3119struct target_sigframe
3120{
3121 struct target_sigcontext sc;
3122 target_ulong extramask[TARGET_NSIG_WORDS-1];
3123 uint16_t retcode[3];
3124};
3125
3126
3127struct target_ucontext {
60e99246
AJ		 3128 target_ulong tuc_flags;
3129 struct target_ucontext *tuc_link;
3130 target_stack_t tuc_stack;
3131 struct target_sigcontext tuc_mcontext;
3132 target_sigset_t tuc_sigmask; /* mask last for extensibility */
c3b5bc8a
TS		 3133};
3134
3135struct target_rt_sigframe
3136{
3137 struct target_siginfo info;
3138 struct target_ucontext uc;
3139 uint16_t retcode[3];
3140};
3141
3142
3143#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
3144#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
3145
624f7979 3146static abi_ulong get_sigframe(struct target_sigaction *ka,
c3b5bc8a
TS		 3147 unsigned long sp, size_t frame_size)
3148{
624f7979 3149 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) {
c3b5bc8a
TS		 3150 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
3151 }
3152
3153 return (sp - frame_size) & -8ul;
3154}
3155
41ecc72b 3156static void setup_sigcontext(struct target_sigcontext *sc,
05390248 3157 CPUSH4State *regs, unsigned long mask)
c3b5bc8a 3158{
d8714436 3159 int i;
c3b5bc8a 3160
1d8b512b 3161#define COPY(x) __put_user(regs->x, &sc->sc_##x)
c3b5bc8a
TS		 3162 COPY(gregs[0]); COPY(gregs[1]);
3163 COPY(gregs[2]); COPY(gregs[3]);
3164 COPY(gregs[4]); COPY(gregs[5]);
3165 COPY(gregs[6]); COPY(gregs[7]);
3166 COPY(gregs[8]); COPY(gregs[9]);
3167 COPY(gregs[10]); COPY(gregs[11]);
3168 COPY(gregs[12]); COPY(gregs[13]);
3169 COPY(gregs[14]); COPY(gregs[15]);
3170 COPY(gbr); COPY(mach);
3171 COPY(macl); COPY(pr);
3172 COPY(sr); COPY(pc);
3173#undef COPY
3174
d8714436 3175 for (i=0; i<16; i++) {
1d8b512b 3176 __put_user(regs->fregs[i], &sc->sc_fpregs[i]);
d8714436 3177 }
1d8b512b
RV		 3178 __put_user(regs->fpscr, &sc->sc_fpscr);
3179 __put_user(regs->fpul, &sc->sc_fpul);
c3b5bc8a
TS		 3180
3181 /* non-iBCS2 extensions.. */
1d8b512b 3182 __put_user(mask, &sc->oldmask);
c3b5bc8a
TS		 3183}
3184
016d2e1d 3185static void restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc,
d8714436 3186 target_ulong *r0_p)
c3b5bc8a 3187{
d8714436 3188 int i;
c3b5bc8a 3189
1d8b512b 3190#define COPY(x) __get_user(regs->x, &sc->sc_##x)
c3b5bc8a
TS		 3191 COPY(gregs[1]);
3192 COPY(gregs[2]); COPY(gregs[3]);
3193 COPY(gregs[4]); COPY(gregs[5]);
3194 COPY(gregs[6]); COPY(gregs[7]);
3195 COPY(gregs[8]); COPY(gregs[9]);
3196 COPY(gregs[10]); COPY(gregs[11]);
3197 COPY(gregs[12]); COPY(gregs[13]);
3198 COPY(gregs[14]); COPY(gregs[15]);
3199 COPY(gbr); COPY(mach);
3200 COPY(macl); COPY(pr);
3201 COPY(sr); COPY(pc);
3202#undef COPY
3203
d8714436 3204 for (i=0; i<16; i++) {
1d8b512b 3205 __get_user(regs->fregs[i], &sc->sc_fpregs[i]);
d8714436 3206 }
1d8b512b
RV		 3207 __get_user(regs->fpscr, &sc->sc_fpscr);
3208 __get_user(regs->fpul, &sc->sc_fpul);
c3b5bc8a
TS		 3209
3210 regs->tra = -1; /* disable syscall checks */
1d8b512b 3211 __get_user(*r0_p, &sc->sc_gregs[0]);
c3b5bc8a
TS		 3212}
3213
624f7979 3214static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3215 target_sigset_t *set, CPUSH4State *regs)
c3b5bc8a
TS		 3216{
3217 struct target_sigframe *frame;
3218 abi_ulong frame_addr;
3219 int i;
3220 int err = 0;
3221 int signal;
3222
3223 frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
3224 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3225 goto give_sigsegv;
3226
3227 signal = current_exec_domain_sig(sig);
3228
41ecc72b 3229 setup_sigcontext(&frame->sc, regs, set->sig[0]);
c3b5bc8a
TS		 3230
3231 for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
1d8b512b 3232 __put_user(set->sig[i + 1], &frame->extramask[i]);
c3b5bc8a
TS		 3233 }
3234
3235 /* Set up to return from userspace. If provided, use a stub
3236 already in userspace. */
624f7979
PB		 3237 if (ka->sa_flags & TARGET_SA_RESTORER) {
3238 regs->pr = (unsigned long) ka->sa_restorer;
c3b5bc8a
TS		 3239 } else {
3240 /* Generate return code (system call to sigreturn) */
1d8b512b
RV		 3241 __put_user(MOVW(2), &frame->retcode[0]);
3242 __put_user(TRAP_NOARG, &frame->retcode[1]);
3243 __put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
c3b5bc8a
TS		 3244 regs->pr = (unsigned long) frame->retcode;
3245 }
3246
3247 if (err)
3248 goto give_sigsegv;
3249
3250 /* Set up registers for signal handler */
cb9c6268 3251 regs->gregs[15] = frame_addr;
c3b5bc8a
TS		 3252 regs->gregs[4] = signal; /* Arg for signal handler */
3253 regs->gregs[5] = 0;
cb9c6268 3254 regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
624f7979 3255 regs->pc = (unsigned long) ka->_sa_handler;
c3b5bc8a
TS		 3256
3257 unlock_user_struct(frame, frame_addr, 1);
3258 return;
3259
3260give_sigsegv:
3261 unlock_user_struct(frame, frame_addr, 1);
66393fb9 3262 force_sig(TARGET_SIGSEGV);
c3b5bc8a
TS		 3263}
3264
624f7979 3265static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3266 target_siginfo_t *info,
05390248 3267 target_sigset_t *set, CPUSH4State *regs)
c3b5bc8a
TS		 3268{
3269 struct target_rt_sigframe *frame;
3270 abi_ulong frame_addr;
3271 int i;
3272 int err = 0;
3273 int signal;
3274
3275 frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
3276 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3277 goto give_sigsegv;
3278
3279 signal = current_exec_domain_sig(sig);
3280
b0fd8d18 3281 copy_siginfo_to_user(&frame->info, info);
c3b5bc8a
TS		 3282
3283 /* Create the ucontext. */
1d8b512b
RV		 3284 __put_user(0, &frame->uc.tuc_flags);
3285 __put_user(0, (unsigned long *)&frame->uc.tuc_link);
3286 __put_user((unsigned long)target_sigaltstack_used.ss_sp,
3287 &frame->uc.tuc_stack.ss_sp);
3288 __put_user(sas_ss_flags(regs->gregs[15]),
3289 &frame->uc.tuc_stack.ss_flags);
3290 __put_user(target_sigaltstack_used.ss_size,
3291 &frame->uc.tuc_stack.ss_size);
3292 setup_sigcontext(&frame->uc.tuc_mcontext,
c3b5bc8a
TS		 3293 regs, set->sig[0]);
3294 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 3295 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
c3b5bc8a
TS		 3296 }
3297
3298 /* Set up to return from userspace. If provided, use a stub
3299 already in userspace. */
624f7979
PB		 3300 if (ka->sa_flags & TARGET_SA_RESTORER) {
3301 regs->pr = (unsigned long) ka->sa_restorer;
c3b5bc8a
TS		 3302 } else {
3303 /* Generate return code (system call to sigreturn) */
1d8b512b
RV		 3304 __put_user(MOVW(2), &frame->retcode[0]);
3305 __put_user(TRAP_NOARG, &frame->retcode[1]);
3306 __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
c3b5bc8a
TS		 3307 regs->pr = (unsigned long) frame->retcode;
3308 }
3309
3310 if (err)
3311 goto give_sigsegv;
3312
3313 /* Set up registers for signal handler */
cb9c6268 3314 regs->gregs[15] = frame_addr;
c3b5bc8a 3315 regs->gregs[4] = signal; /* Arg for signal handler */
cb9c6268
EI		 3316 regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
3317 regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
624f7979 3318 regs->pc = (unsigned long) ka->_sa_handler;
c3b5bc8a
TS		 3319
3320 unlock_user_struct(frame, frame_addr, 1);
3321 return;
3322
3323give_sigsegv:
3324 unlock_user_struct(frame, frame_addr, 1);
66393fb9 3325 force_sig(TARGET_SIGSEGV);
c3b5bc8a
TS		 3326}
3327
05390248 3328long do_sigreturn(CPUSH4State *regs)
c3b5bc8a
TS		 3329{
3330 struct target_sigframe *frame;
3331 abi_ulong frame_addr;
3332 sigset_t blocked;
c227f099 3333 target_sigset_t target_set;
d8714436 3334 target_ulong r0;
c3b5bc8a
TS		 3335 int i;
3336 int err = 0;
3337
3338#if defined(DEBUG_SIGNAL)
3339 fprintf(stderr, "do_sigreturn\n");
3340#endif
3341 frame_addr = regs->gregs[15];
3342 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3343 goto badframe;
3344
1d8b512b 3345 __get_user(target_set.sig[0], &frame->sc.oldmask);
c3b5bc8a 3346 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 3347 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
c3b5bc8a
TS		 3348 }
3349
3350 if (err)
3351 goto badframe;
3352
3353 target_to_host_sigset_internal(&blocked, &target_set);
1c275925 3354 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
c3b5bc8a 3355
016d2e1d 3356 restore_sigcontext(regs, &frame->sc, &r0);
c3b5bc8a
TS		 3357
3358 unlock_user_struct(frame, frame_addr, 0);
d8714436 3359 return r0;
c3b5bc8a
TS		 3360
3361badframe:
3362 unlock_user_struct(frame, frame_addr, 0);
3363 force_sig(TARGET_SIGSEGV);
3364 return 0;
3365}
3366
05390248 3367long do_rt_sigreturn(CPUSH4State *regs)
c3b5bc8a
TS		 3368{
3369 struct target_rt_sigframe *frame;
3370 abi_ulong frame_addr;
3371 sigset_t blocked;
d8714436 3372 target_ulong r0;
c3b5bc8a
TS		 3373
3374#if defined(DEBUG_SIGNAL)
3375 fprintf(stderr, "do_rt_sigreturn\n");
3376#endif
3377 frame_addr = regs->gregs[15];
3378 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3379 goto badframe;
3380
60e99246 3381 target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask);
1c275925 3382 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
c3b5bc8a 3383
016d2e1d 3384 restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0);
c3b5bc8a
TS		 3385
3386 if (do_sigaltstack(frame_addr +
60e99246 3387 offsetof(struct target_rt_sigframe, uc.tuc_stack),
c3b5bc8a
TS		 3388 0, get_sp_from_cpustate(regs)) == -EFAULT)
3389 goto badframe;
3390
3391 unlock_user_struct(frame, frame_addr, 0);
d8714436 3392 return r0;
c3b5bc8a
TS		 3393
3394badframe:
3395 unlock_user_struct(frame, frame_addr, 0);
3396 force_sig(TARGET_SIGSEGV);
3397 return 0;
3398}
b779e29e
EI		 3399#elif defined(TARGET_MICROBLAZE)
3400
3401struct target_sigcontext {
3402 struct target_pt_regs regs; /* needs to be first */
3403 uint32_t oldmask;
3404};
3405
b2178704
EI		 3406struct target_stack_t {
3407 abi_ulong ss_sp;
3408 int ss_flags;
3409 unsigned int ss_size;
3410};
3411
3412struct target_ucontext {
f711df67
RH		 3413 abi_ulong tuc_flags;
3414 abi_ulong tuc_link;
3415 struct target_stack_t tuc_stack;
3416 struct target_sigcontext tuc_mcontext;
3417 uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
b2178704
EI		 3418};
3419
b779e29e
EI		 3420/* Signal frames. */
3421struct target_signal_frame {
b2178704 3422 struct target_ucontext uc;
b779e29e
EI		 3423 uint32_t extramask[TARGET_NSIG_WORDS - 1];
3424 uint32_t tramp[2];
3425};
3426
3427struct rt_signal_frame {
02d2bd5d 3428 siginfo_t info;
b779e29e
EI		 3429 struct ucontext uc;
3430 uint32_t tramp[2];
3431};
3432
05390248 3433static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
b779e29e
EI		 3434{
3435 __put_user(env->regs[0], &sc->regs.r0);
3436 __put_user(env->regs[1], &sc->regs.r1);
3437 __put_user(env->regs[2], &sc->regs.r2);
3438 __put_user(env->regs[3], &sc->regs.r3);
3439 __put_user(env->regs[4], &sc->regs.r4);
3440 __put_user(env->regs[5], &sc->regs.r5);
3441 __put_user(env->regs[6], &sc->regs.r6);
3442 __put_user(env->regs[7], &sc->regs.r7);
3443 __put_user(env->regs[8], &sc->regs.r8);
3444 __put_user(env->regs[9], &sc->regs.r9);
3445 __put_user(env->regs[10], &sc->regs.r10);
3446 __put_user(env->regs[11], &sc->regs.r11);
3447 __put_user(env->regs[12], &sc->regs.r12);
3448 __put_user(env->regs[13], &sc->regs.r13);
3449 __put_user(env->regs[14], &sc->regs.r14);
3450 __put_user(env->regs[15], &sc->regs.r15);
3451 __put_user(env->regs[16], &sc->regs.r16);
3452 __put_user(env->regs[17], &sc->regs.r17);
3453 __put_user(env->regs[18], &sc->regs.r18);
3454 __put_user(env->regs[19], &sc->regs.r19);
3455 __put_user(env->regs[20], &sc->regs.r20);
3456 __put_user(env->regs[21], &sc->regs.r21);
3457 __put_user(env->regs[22], &sc->regs.r22);
3458 __put_user(env->regs[23], &sc->regs.r23);
3459 __put_user(env->regs[24], &sc->regs.r24);
3460 __put_user(env->regs[25], &sc->regs.r25);
3461 __put_user(env->regs[26], &sc->regs.r26);
3462 __put_user(env->regs[27], &sc->regs.r27);
3463 __put_user(env->regs[28], &sc->regs.r28);
3464 __put_user(env->regs[29], &sc->regs.r29);
3465 __put_user(env->regs[30], &sc->regs.r30);
3466 __put_user(env->regs[31], &sc->regs.r31);
3467 __put_user(env->sregs[SR_PC], &sc->regs.pc);
3468}
3469
05390248 3470static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
b779e29e
EI		 3471{
3472 __get_user(env->regs[0], &sc->regs.r0);
3473 __get_user(env->regs[1], &sc->regs.r1);
3474 __get_user(env->regs[2], &sc->regs.r2);
3475 __get_user(env->regs[3], &sc->regs.r3);
3476 __get_user(env->regs[4], &sc->regs.r4);
3477 __get_user(env->regs[5], &sc->regs.r5);
3478 __get_user(env->regs[6], &sc->regs.r6);
3479 __get_user(env->regs[7], &sc->regs.r7);
3480 __get_user(env->regs[8], &sc->regs.r8);
3481 __get_user(env->regs[9], &sc->regs.r9);
3482 __get_user(env->regs[10], &sc->regs.r10);
3483 __get_user(env->regs[11], &sc->regs.r11);
3484 __get_user(env->regs[12], &sc->regs.r12);
3485 __get_user(env->regs[13], &sc->regs.r13);
3486 __get_user(env->regs[14], &sc->regs.r14);
3487 __get_user(env->regs[15], &sc->regs.r15);
3488 __get_user(env->regs[16], &sc->regs.r16);
3489 __get_user(env->regs[17], &sc->regs.r17);
3490 __get_user(env->regs[18], &sc->regs.r18);
3491 __get_user(env->regs[19], &sc->regs.r19);
3492 __get_user(env->regs[20], &sc->regs.r20);
3493 __get_user(env->regs[21], &sc->regs.r21);
3494 __get_user(env->regs[22], &sc->regs.r22);
3495 __get_user(env->regs[23], &sc->regs.r23);
3496 __get_user(env->regs[24], &sc->regs.r24);
3497 __get_user(env->regs[25], &sc->regs.r25);
3498 __get_user(env->regs[26], &sc->regs.r26);
3499 __get_user(env->regs[27], &sc->regs.r27);
3500 __get_user(env->regs[28], &sc->regs.r28);
3501 __get_user(env->regs[29], &sc->regs.r29);
3502 __get_user(env->regs[30], &sc->regs.r30);
3503 __get_user(env->regs[31], &sc->regs.r31);
3504 __get_user(env->sregs[SR_PC], &sc->regs.pc);
3505}
3506
3507static abi_ulong get_sigframe(struct target_sigaction *ka,
05390248 3508 CPUMBState *env, int frame_size)
b779e29e
EI		 3509{
3510 abi_ulong sp = env->regs[1];
3511
b545f63f 3512 if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) {
b779e29e 3513 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
b545f63f 3514 }
b779e29e
EI		 3515
3516 return ((sp - frame_size) & -8UL);
3517}
3518
3519static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3520 target_sigset_t *set, CPUMBState *env)
b779e29e
EI		 3521{
3522 struct target_signal_frame *frame;
3523 abi_ulong frame_addr;
b779e29e
EI		 3524 int i;
3525
3526 frame_addr = get_sigframe(ka, env, sizeof *frame);
3527 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3528 goto badframe;
3529
3530 /* Save the mask. */
1d8b512b 3531 __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
b779e29e
EI		 3532
3533 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
0188fadb 3534 __put_user(set->sig[i], &frame->extramask[i - 1]);
b779e29e
EI		 3535 }
3536
f711df67 3537 setup_sigcontext(&frame->uc.tuc_mcontext, env);
b779e29e
EI		 3538
3539 /* Set up to return from userspace. If provided, use a stub
3540 already in userspace. */
3541 /* minus 8 is offset to cater for "rtsd r15,8" offset */
3542 if (ka->sa_flags & TARGET_SA_RESTORER) {
3543 env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
3544 } else {
3545 uint32_t t;
3546 /* Note, these encodings are _big endian_! */
3547 /* addi r12, r0, __NR_sigreturn */
3548 t = 0x31800000UL | TARGET_NR_sigreturn;
1d8b512b 3549 __put_user(t, frame->tramp + 0);
b779e29e
EI		 3550 /* brki r14, 0x8 */
3551 t = 0xb9cc0008UL;
1d8b512b 3552 __put_user(t, frame->tramp + 1);
b779e29e
EI		 3553
3554 /* Return from sighandler will jump to the tramp.
3555 Negative 8 offset because return is rtsd r15, 8 */
3556 env->regs[15] = ((unsigned long)frame->tramp) - 8;
3557 }
3558
b779e29e 3559 /* Set up registers for signal handler */
cb9c6268 3560 env->regs[1] = frame_addr;
b779e29e
EI		 3561 /* Signal handler args: */
3562 env->regs[5] = sig; /* Arg 0: signum */
187b4e08 3563 env->regs[6] = 0;
cb9c6268
EI		 3564 /* arg 1: sigcontext */
3565 env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
b779e29e
EI		 3566
3567 /* Offset of 4 to handle microblaze rtid r14, 0 */
3568 env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
3569
3570 unlock_user_struct(frame, frame_addr, 1);
3571 return;
3572 badframe:
b779e29e
EI		 3573 force_sig(TARGET_SIGSEGV);
3574}
3575
3576static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3577 target_siginfo_t *info,
05390248 3578 target_sigset_t *set, CPUMBState *env)
b779e29e
EI		 3579{
3580 fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
3581}
3582
05390248 3583long do_sigreturn(CPUMBState *env)
b779e29e
EI		 3584{
3585 struct target_signal_frame *frame;
3586 abi_ulong frame_addr;
c227f099 3587 target_sigset_t target_set;
b779e29e
EI		 3588 sigset_t set;
3589 int i;
3590
3591 frame_addr = env->regs[R_SP];
3592 /* Make sure the guest isn't playing games. */
3593 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
3594 goto badframe;
3595
3596 /* Restore blocked signals */
f5f601af 3597 __get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
b779e29e 3598 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 3599 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
b779e29e
EI		 3600 }
3601 target_to_host_sigset_internal(&set, &target_set);
1c275925 3602 do_sigprocmask(SIG_SETMASK, &set, NULL);
b779e29e 3603
f711df67 3604 restore_sigcontext(&frame->uc.tuc_mcontext, env);
b779e29e
EI		 3605 /* We got here through a sigreturn syscall, our path back is via an
3606 rtb insn so setup r14 for that. */
3607 env->regs[14] = env->sregs[SR_PC];
3608
3609 unlock_user_struct(frame, frame_addr, 0);
3610 return env->regs[10];
3611 badframe:
b779e29e
EI		 3612 force_sig(TARGET_SIGSEGV);
3613}
3614
05390248 3615long do_rt_sigreturn(CPUMBState *env)
b779e29e
EI		 3616{
3617 fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
3618 return -TARGET_ENOSYS;
3619}
3620
b6d3abda
EI		 3621#elif defined(TARGET_CRIS)
3622
3623struct target_sigcontext {
3624 struct target_pt_regs regs; /* needs to be first */
3625 uint32_t oldmask;
3626 uint32_t usp; /* usp before stacking this gunk on it */
3627};
3628
3629/* Signal frames. */
3630struct target_signal_frame {
3631 struct target_sigcontext sc;
3632 uint32_t extramask[TARGET_NSIG_WORDS - 1];
8cfc114a 3633 uint16_t retcode[4]; /* Trampoline code. */
b6d3abda
EI		 3634};
3635
3636struct rt_signal_frame {
02d2bd5d 3637 siginfo_t *pinfo;
b6d3abda 3638 void *puc;
02d2bd5d 3639 siginfo_t info;
b6d3abda 3640 struct ucontext uc;
8cfc114a 3641 uint16_t retcode[4]; /* Trampoline code. */
b6d3abda
EI		 3642};
3643
05390248 3644static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
b6d3abda 3645{
9664d928
EI		 3646 __put_user(env->regs[0], &sc->regs.r0);
3647 __put_user(env->regs[1], &sc->regs.r1);
3648 __put_user(env->regs[2], &sc->regs.r2);
3649 __put_user(env->regs[3], &sc->regs.r3);
3650 __put_user(env->regs[4], &sc->regs.r4);
3651 __put_user(env->regs[5], &sc->regs.r5);
3652 __put_user(env->regs[6], &sc->regs.r6);
3653 __put_user(env->regs[7], &sc->regs.r7);
3654 __put_user(env->regs[8], &sc->regs.r8);
3655 __put_user(env->regs[9], &sc->regs.r9);
3656 __put_user(env->regs[10], &sc->regs.r10);
3657 __put_user(env->regs[11], &sc->regs.r11);
3658 __put_user(env->regs[12], &sc->regs.r12);
3659 __put_user(env->regs[13], &sc->regs.r13);
3660 __put_user(env->regs[14], &sc->usp);
3661 __put_user(env->regs[15], &sc->regs.acr);
3662 __put_user(env->pregs[PR_MOF], &sc->regs.mof);
3663 __put_user(env->pregs[PR_SRP], &sc->regs.srp);
3664 __put_user(env->pc, &sc->regs.erp);
b6d3abda 3665}
9664d928 3666
05390248 3667static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
b6d3abda 3668{
9664d928
EI		 3669 __get_user(env->regs[0], &sc->regs.r0);
3670 __get_user(env->regs[1], &sc->regs.r1);
3671 __get_user(env->regs[2], &sc->regs.r2);
3672 __get_user(env->regs[3], &sc->regs.r3);
3673 __get_user(env->regs[4], &sc->regs.r4);
3674 __get_user(env->regs[5], &sc->regs.r5);
3675 __get_user(env->regs[6], &sc->regs.r6);
3676 __get_user(env->regs[7], &sc->regs.r7);
3677 __get_user(env->regs[8], &sc->regs.r8);
3678 __get_user(env->regs[9], &sc->regs.r9);
3679 __get_user(env->regs[10], &sc->regs.r10);
3680 __get_user(env->regs[11], &sc->regs.r11);
3681 __get_user(env->regs[12], &sc->regs.r12);
3682 __get_user(env->regs[13], &sc->regs.r13);
3683 __get_user(env->regs[14], &sc->usp);
3684 __get_user(env->regs[15], &sc->regs.acr);
3685 __get_user(env->pregs[PR_MOF], &sc->regs.mof);
3686 __get_user(env->pregs[PR_SRP], &sc->regs.srp);
3687 __get_user(env->pc, &sc->regs.erp);
3688}
3689
05390248 3690static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
9664d928
EI		 3691{
3692 abi_ulong sp;
b6d3abda 3693 /* Align the stack downwards to 4. */
9664d928
EI		 3694 sp = (env->regs[R_SP] & ~3);
3695 return sp - framesize;
b6d3abda
EI		 3696}
3697
624f7979 3698static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3699 target_sigset_t *set, CPUCRISState *env)
b6d3abda
EI		 3700{
3701 struct target_signal_frame *frame;
9664d928 3702 abi_ulong frame_addr;
b6d3abda 3703 int i;
b6d3abda 3704
9664d928
EI		 3705 frame_addr = get_sigframe(env, sizeof *frame);
3706 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
b6d3abda
EI		 3707 goto badframe;
3708
3709 /*
3710 * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
3711 * use this trampoline anymore but it sets it up for GDB.
3712 * In QEMU, using the trampoline simplifies things a bit so we use it.
3713 *
3714 * This is movu.w __NR_sigreturn, r9; break 13;
3715 */
1d8b512b
RV		 3716 __put_user(0x9c5f, frame->retcode+0);
3717 __put_user(TARGET_NR_sigreturn,
3718 frame->retcode + 1);
3719 __put_user(0xe93d, frame->retcode + 2);
b6d3abda
EI		 3720
3721 /* Save the mask. */
1d8b512b 3722 __put_user(set->sig[0], &frame->sc.oldmask);
b6d3abda 3723
0188fadb
RV		 3724 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3725 __put_user(set->sig[i], &frame->extramask[i - 1]);
3726 }
b6d3abda
EI		 3727
3728 setup_sigcontext(&frame->sc, env);
3729
3730 /* Move the stack and setup the arguments for the handler. */
cb9c6268 3731 env->regs[R_SP] = frame_addr;
b6d3abda 3732 env->regs[10] = sig;
624f7979 3733 env->pc = (unsigned long) ka->_sa_handler;
b6d3abda 3734 /* Link SRP so the guest returns through the trampoline. */
cb9c6268 3735 env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
b6d3abda 3736
9664d928 3737 unlock_user_struct(frame, frame_addr, 1);
b6d3abda
EI		 3738 return;
3739 badframe:
b6d3abda
EI		 3740 force_sig(TARGET_SIGSEGV);
3741}
3742
624f7979 3743static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3744 target_siginfo_t *info,
05390248 3745 target_sigset_t *set, CPUCRISState *env)
b6d3abda
EI		 3746{
3747 fprintf(stderr, "CRIS setup_rt_frame: not implemented\n");
3748}
3749
05390248 3750long do_sigreturn(CPUCRISState *env)
b6d3abda
EI		 3751{
3752 struct target_signal_frame *frame;
9664d928 3753 abi_ulong frame_addr;
c227f099 3754 target_sigset_t target_set;
b6d3abda
EI		 3755 sigset_t set;
3756 int i;
3757
9664d928 3758 frame_addr = env->regs[R_SP];
b6d3abda 3759 /* Make sure the guest isn't playing games. */
9664d928 3760 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
b6d3abda
EI		 3761 goto badframe;
3762
3763 /* Restore blocked signals */
f5f601af 3764 __get_user(target_set.sig[0], &frame->sc.oldmask);
b6d3abda 3765 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 3766 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
b6d3abda
EI		 3767 }
3768 target_to_host_sigset_internal(&set, &target_set);
1c275925 3769 do_sigprocmask(SIG_SETMASK, &set, NULL);
b6d3abda
EI		 3770
3771 restore_sigcontext(&frame->sc, env);
9664d928 3772 unlock_user_struct(frame, frame_addr, 0);
b6d3abda
EI		 3773 return env->regs[10];
3774 badframe:
b6d3abda
EI		 3775 force_sig(TARGET_SIGSEGV);
3776}
3777
05390248 3778long do_rt_sigreturn(CPUCRISState *env)
b6d3abda
EI		 3779{
3780 fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
3781 return -TARGET_ENOSYS;
3782}
c3b5bc8a 3783
d962783e
JL		 3784#elif defined(TARGET_OPENRISC)
3785
3786struct target_sigcontext {
3787 struct target_pt_regs regs;
3788 abi_ulong oldmask;
3789 abi_ulong usp;
3790};
3791
3792struct target_ucontext {
3793 abi_ulong tuc_flags;
3794 abi_ulong tuc_link;
3795 target_stack_t tuc_stack;
3796 struct target_sigcontext tuc_mcontext;
3797 target_sigset_t tuc_sigmask; /* mask last for extensibility */
3798};
3799
3800struct target_rt_sigframe {
3801 abi_ulong pinfo;
3802 uint64_t puc;
3803 struct target_siginfo info;
3804 struct target_sigcontext sc;
3805 struct target_ucontext uc;
3806 unsigned char retcode[16]; /* trampoline code */
3807};
3808
3809/* This is the asm-generic/ucontext.h version */
3810#if 0
3811static int restore_sigcontext(CPUOpenRISCState *regs,
3812 struct target_sigcontext *sc)
3813{
3814 unsigned int err = 0;
3815 unsigned long old_usp;
3816
3817 /* Alwys make any pending restarted system call return -EINTR */
3818 current_thread_info()->restart_block.fn = do_no_restart_syscall;
3819
3820 /* restore the regs from &sc->regs (same as sc, since regs is first)
3821 * (sc is already checked for VERIFY_READ since the sigframe was
3822 * checked in sys_sigreturn previously)
3823 */
3824
3825 if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) {
3826 goto badframe;
3827 }
3828
3829 /* make sure the U-flag is set so user-mode cannot fool us */
3830
3831 regs->sr &= ~SR_SM;
3832
3833 /* restore the old USP as it was before we stacked the sc etc.
3834 * (we cannot just pop the sigcontext since we aligned the sp and
3835 * stuff after pushing it)
3836 */
3837
1d8b512b 3838 __get_user(old_usp, &sc->usp);
d962783e
JL		 3839 phx_signal("old_usp 0x%lx", old_usp);
3840
3841 __PHX__ REALLY /* ??? */
3842 wrusp(old_usp);
3843 regs->gpr[1] = old_usp;
3844
3845 /* TODO: the other ports use regs->orig_XX to disable syscall checks
3846 * after this completes, but we don't use that mechanism. maybe we can
3847 * use it now ?
3848 */
3849
3850 return err;
3851
3852badframe:
3853 return 1;
3854}
3855#endif
3856
3857/* Set up a signal frame. */
3858
41ecc72b 3859static void setup_sigcontext(struct target_sigcontext *sc,
d962783e
JL		 3860 CPUOpenRISCState *regs,
3861 unsigned long mask)
3862{
d962783e
JL		 3863 unsigned long usp = regs->gpr[1];
3864
3865 /* copy the regs. they are first in sc so we can use sc directly */
3866
1d8b512b 3867 /*copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/
d962783e
JL		 3868
3869 /* Set the frametype to CRIS_FRAME_NORMAL for the execution of
3870 the signal handler. The frametype will be restored to its previous
3871 value in restore_sigcontext. */
3872 /*regs->frametype = CRIS_FRAME_NORMAL;*/
3873
3874 /* then some other stuff */
1d8b512b 3875 __put_user(mask, &sc->oldmask);
41ecc72b 3876 __put_user(usp, &sc->usp);
d962783e
JL		 3877}
3878
3879static inline unsigned long align_sigframe(unsigned long sp)
3880{
3881 unsigned long i;
3882 i = sp & ~3UL;
3883 return i;
3884}
3885
3886static inline abi_ulong get_sigframe(struct target_sigaction *ka,
3887 CPUOpenRISCState *regs,
3888 size_t frame_size)
3889{
3890 unsigned long sp = regs->gpr[1];
3891 int onsigstack = on_sig_stack(sp);
3892
3893 /* redzone */
3894 /* This is the X/Open sanctioned signal stack switching. */
b545f63f 3895 if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !onsigstack) {
d962783e
JL		 3896 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
3897 }
3898
3899 sp = align_sigframe(sp - frame_size);
3900
3901 /*
3902 * If we are on the alternate signal stack and would overflow it, don't.
3903 * Return an always-bogus address instead so we will die with SIGSEGV.
3904 */
3905
3906 if (onsigstack && !likely(on_sig_stack(sp))) {
3907 return -1L;
3908 }
3909
3910 return sp;
3911}
3912
3913static void setup_frame(int sig, struct target_sigaction *ka,
3914 target_sigset_t *set, CPUOpenRISCState *env)
3915{
3916 qemu_log("Not implement.\n");
3917}
3918
3919static void setup_rt_frame(int sig, struct target_sigaction *ka,
3920 target_siginfo_t *info,
3921 target_sigset_t *set, CPUOpenRISCState *env)
3922{
3923 int err = 0;
3924 abi_ulong frame_addr;
3925 unsigned long return_ip;
3926 struct target_rt_sigframe *frame;
3927 abi_ulong info_addr, uc_addr;
3928
d962783e
JL		 3929 frame_addr = get_sigframe(ka, env, sizeof(*frame));
3930 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
3931 goto give_sigsegv;
3932 }
3933
3934 info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
1d8b512b 3935 __put_user(info_addr, &frame->pinfo);
d962783e 3936 uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
1d8b512b 3937 __put_user(uc_addr, &frame->puc);
d962783e
JL		 3938
3939 if (ka->sa_flags & SA_SIGINFO) {
b0fd8d18 3940 copy_siginfo_to_user(&frame->info, info);
d962783e
JL		 3941 }
3942
3943 /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/
1d8b512b
RV		 3944 __put_user(0, &frame->uc.tuc_flags);
3945 __put_user(0, &frame->uc.tuc_link);
3946 __put_user(target_sigaltstack_used.ss_sp,
3947 &frame->uc.tuc_stack.ss_sp);
3948 __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags);
3949 __put_user(target_sigaltstack_used.ss_size,
3950 &frame->uc.tuc_stack.ss_size);
41ecc72b 3951 setup_sigcontext(&frame->sc, env, set->sig[0]);
d962783e
JL		 3952
3953 /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/
3954
d962783e
JL		 3955 /* trampoline - the desired return ip is the retcode itself */
3956 return_ip = (unsigned long)&frame->retcode;
3957 /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */
1d8b512b
RV		 3958 __put_user(0xa960, (short *)(frame->retcode + 0));
3959 __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2));
3960 __put_user(0x20000001, (unsigned long *)(frame->retcode + 4));
3961 __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));
d962783e
JL		 3962
3963 if (err) {
3964 goto give_sigsegv;
3965 }
3966
3967 /* TODO what is the current->exec_domain stuff and invmap ? */
3968
3969 /* Set up registers for signal handler */
3970 env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */
3971 env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */
3972 env->gpr[3] = (unsigned long)sig; /* arg 1: signo */
3973 env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */
3974 env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */
3975
3976 /* actually move the usp to reflect the stacked frame */
3977 env->gpr[1] = (unsigned long)frame;
3978
3979 return;
3980
3981give_sigsegv:
3982 unlock_user_struct(frame, frame_addr, 1);
3983 if (sig == TARGET_SIGSEGV) {
3984 ka->_sa_handler = TARGET_SIG_DFL;
3985 }
3986 force_sig(TARGET_SIGSEGV);
3987}
3988
3989long do_sigreturn(CPUOpenRISCState *env)
3990{
3991
3992 qemu_log("do_sigreturn: not implemented\n");
3993 return -TARGET_ENOSYS;
3994}
3995
3996long do_rt_sigreturn(CPUOpenRISCState *env)
3997{
3998 qemu_log("do_rt_sigreturn: not implemented\n");
3999 return -TARGET_ENOSYS;
4000}
4001/* TARGET_OPENRISC */
4002
a4c075f1
UH		 4003#elif defined(TARGET_S390X)
4004
4005#define __NUM_GPRS 16
4006#define __NUM_FPRS 16
4007#define __NUM_ACRS 16
4008
4009#define S390_SYSCALL_SIZE 2
4010#define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */
4011
4012#define _SIGCONTEXT_NSIG 64
4013#define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */
4014#define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW)
4015#define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS)
4016#define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for 31-bit */
4017#define S390_SYSCALL_OPCODE ((uint16_t)0x0a00)
4018
4019typedef struct {
4020 target_psw_t psw;
4021 target_ulong gprs[__NUM_GPRS];
4022 unsigned int acrs[__NUM_ACRS];
4023} target_s390_regs_common;
4024
4025typedef struct {
4026 unsigned int fpc;
4027 double fprs[__NUM_FPRS];
4028} target_s390_fp_regs;
4029
4030typedef struct {
4031 target_s390_regs_common regs;
4032 target_s390_fp_regs fpregs;
4033} target_sigregs;
4034
4035struct target_sigcontext {
4036 target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS];
4037 target_sigregs *sregs;
4038};
4039
4040typedef struct {
4041 uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
4042 struct target_sigcontext sc;
4043 target_sigregs sregs;
4044 int signo;
4045 uint8_t retcode[S390_SYSCALL_SIZE];
4046} sigframe;
4047
4048struct target_ucontext {
6fea2ea4
PM		 4049 target_ulong tuc_flags;
4050 struct target_ucontext *tuc_link;
4051 target_stack_t tuc_stack;
4052 target_sigregs tuc_mcontext;
4053 target_sigset_t tuc_sigmask; /* mask last for extensibility */
a4c075f1
UH		 4054};
4055
4056typedef struct {
4057 uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
4058 uint8_t retcode[S390_SYSCALL_SIZE];
4059 struct target_siginfo info;
4060 struct target_ucontext uc;
4061} rt_sigframe;
4062
4063static inline abi_ulong
05390248 4064get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t frame_size)
a4c075f1
UH		 4065{
4066 abi_ulong sp;
4067
4068 /* Default to using normal stack */
4069 sp = env->regs[15];
4070
4071 /* This is the X/Open sanctioned signal stack switching. */
4072 if (ka->sa_flags & TARGET_SA_ONSTACK) {
4073 if (!sas_ss_flags(sp)) {
4074 sp = target_sigaltstack_used.ss_sp +
4075 target_sigaltstack_used.ss_size;
4076 }
4077 }
4078
4079 /* This is the legacy signal stack switching. */
4080 else if (/* FIXME !user_mode(regs) */ 0 &&
4081 !(ka->sa_flags & TARGET_SA_RESTORER) &&
4082 ka->sa_restorer) {
4083 sp = (abi_ulong) ka->sa_restorer;
4084 }
4085
4086 return (sp - frame_size) & -8ul;
4087}
4088
05390248 4089static void save_sigregs(CPUS390XState *env, target_sigregs *sregs)
a4c075f1
UH		 4090{
4091 int i;
4092 //save_access_regs(current->thread.acrs); FIXME
4093
4094 /* Copy a 'clean' PSW mask to the user to avoid leaking
4095 information about whether PER is currently on. */
4096 __put_user(env->psw.mask, &sregs->regs.psw.mask);
4097 __put_user(env->psw.addr, &sregs->regs.psw.addr);
4098 for (i = 0; i < 16; i++) {
4099 __put_user(env->regs[i], &sregs->regs.gprs[i]);
4100 }
4101 for (i = 0; i < 16; i++) {
4102 __put_user(env->aregs[i], &sregs->regs.acrs[i]);
4103 }
4104 /*
4105 * We have to store the fp registers to current->thread.fp_regs
4106 * to merge them with the emulated registers.
4107 */
4108 //save_fp_regs(&current->thread.fp_regs); FIXME
4109 for (i = 0; i < 16; i++) {
4110 __put_user(env->fregs[i].ll, &sregs->fpregs.fprs[i]);
4111 }
4112}
4113
4114static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4115 target_sigset_t *set, CPUS390XState *env)
a4c075f1
UH		 4116{
4117 sigframe *frame;
4118 abi_ulong frame_addr;
4119
4120 frame_addr = get_sigframe(ka, env, sizeof(*frame));
4121 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4122 (unsigned long long)frame_addr);
4123 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
4124 goto give_sigsegv;
4125 }
4126
4127 qemu_log("%s: 1\n", __FUNCTION__);
0188fadb 4128 __put_user(set->sig[0], &frame->sc.oldmask[0]);
a4c075f1
UH		 4129
4130 save_sigregs(env, &frame->sregs);
4131
4132 __put_user((abi_ulong)(unsigned long)&frame->sregs,
4133 (abi_ulong *)&frame->sc.sregs);
4134
4135 /* Set up to return from userspace. If provided, use a stub
4136 already in userspace. */
4137 if (ka->sa_flags & TARGET_SA_RESTORER) {
4138 env->regs[14] = (unsigned long)
4139 ka->sa_restorer | PSW_ADDR_AMODE;
4140 } else {
4141 env->regs[14] = (unsigned long)
4142 frame->retcode | PSW_ADDR_AMODE;
0188fadb
RV		 4143 __put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
4144 (uint16_t *)(frame->retcode));
a4c075f1
UH		 4145 }
4146
4147 /* Set up backchain. */
0188fadb 4148 __put_user(env->regs[15], (abi_ulong *) frame);
a4c075f1
UH		 4149
4150 /* Set up registers for signal handler */
cb9c6268 4151 env->regs[15] = frame_addr;
a4c075f1
UH		 4152 env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
4153
4154 env->regs[2] = sig; //map_signal(sig);
cb9c6268 4155 env->regs[3] = frame_addr += offsetof(typeof(*frame), sc);
a4c075f1
UH		 4156
4157 /* We forgot to include these in the sigcontext.
4158 To avoid breaking binary compatibility, they are passed as args. */
4159 env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no;
4160 env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr;
4161
4162 /* Place signal number on stack to allow backtrace from handler. */
0188fadb 4163 __put_user(env->regs[2], (int *) &frame->signo);
a4c075f1
UH		 4164 unlock_user_struct(frame, frame_addr, 1);
4165 return;
4166
4167give_sigsegv:
4168 qemu_log("%s: give_sigsegv\n", __FUNCTION__);
a4c075f1
UH		 4169 force_sig(TARGET_SIGSEGV);
4170}
4171
4172static void setup_rt_frame(int sig, struct target_sigaction *ka,
4173 target_siginfo_t *info,
05390248 4174 target_sigset_t *set, CPUS390XState *env)
a4c075f1
UH		 4175{
4176 int i;
4177 rt_sigframe *frame;
4178 abi_ulong frame_addr;
4179
4180 frame_addr = get_sigframe(ka, env, sizeof *frame);
4181 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4182 (unsigned long long)frame_addr);
4183 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
4184 goto give_sigsegv;
4185 }
4186
4187 qemu_log("%s: 1\n", __FUNCTION__);
b0fd8d18 4188 copy_siginfo_to_user(&frame->info, info);
a4c075f1
UH		 4189
4190 /* Create the ucontext. */
6fea2ea4
PM		 4191 __put_user(0, &frame->uc.tuc_flags);
4192 __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link);
4193 __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
a4c075f1 4194 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
6fea2ea4
PM		 4195 &frame->uc.tuc_stack.ss_flags);
4196 __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
4197 save_sigregs(env, &frame->uc.tuc_mcontext);
a4c075f1
UH		 4198 for (i = 0; i < TARGET_NSIG_WORDS; i++) {
4199 __put_user((abi_ulong)set->sig[i],
6fea2ea4 4200 (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
a4c075f1
UH		 4201 }
4202
4203 /* Set up to return from userspace. If provided, use a stub
4204 already in userspace. */
4205 if (ka->sa_flags & TARGET_SA_RESTORER) {
4206 env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE;
4207 } else {
4208 env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE;
0188fadb
RV		 4209 __put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn,
4210 (uint16_t *)(frame->retcode));
a4c075f1
UH		 4211 }
4212
4213 /* Set up backchain. */
0188fadb 4214 __put_user(env->regs[15], (abi_ulong *) frame);
a4c075f1
UH		 4215
4216 /* Set up registers for signal handler */
cb9c6268 4217 env->regs[15] = frame_addr;
a4c075f1
UH		 4218 env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
4219
4220 env->regs[2] = sig; //map_signal(sig);
cb9c6268
EI		 4221 env->regs[3] = frame_addr + offsetof(typeof(*frame), info);
4222 env->regs[4] = frame_addr + offsetof(typeof(*frame), uc);
a4c075f1
UH		 4223 return;
4224
4225give_sigsegv:
4226 qemu_log("%s: give_sigsegv\n", __FUNCTION__);
a4c075f1
UH		 4227 force_sig(TARGET_SIGSEGV);
4228}
4229
4230static int
05390248 4231restore_sigregs(CPUS390XState *env, target_sigregs *sc)
a4c075f1
UH		 4232{
4233 int err = 0;
4234 int i;
4235
4236 for (i = 0; i < 16; i++) {
1d8b512b 4237 __get_user(env->regs[i], &sc->regs.gprs[i]);
a4c075f1
UH		 4238 }
4239
1d8b512b 4240 __get_user(env->psw.mask, &sc->regs.psw.mask);
a4c075f1
UH		 4241 qemu_log("%s: sc->regs.psw.addr 0x%llx env->psw.addr 0x%llx\n",
4242 __FUNCTION__, (unsigned long long)sc->regs.psw.addr,
4243 (unsigned long long)env->psw.addr);
1d8b512b 4244 __get_user(env->psw.addr, &sc->regs.psw.addr);
a4c075f1
UH		 4245 /* FIXME: 31-bit -> | PSW_ADDR_AMODE */
4246
4247 for (i = 0; i < 16; i++) {
1d8b512b 4248 __get_user(env->aregs[i], &sc->regs.acrs[i]);
a4c075f1
UH		 4249 }
4250 for (i = 0; i < 16; i++) {
1d8b512b 4251 __get_user(env->fregs[i].ll, &sc->fpregs.fprs[i]);
a4c075f1
UH		 4252 }
4253
4254 return err;
4255}
4256
05390248 4257long do_sigreturn(CPUS390XState *env)
a4c075f1
UH		 4258{
4259 sigframe *frame;
4260 abi_ulong frame_addr = env->regs[15];
4261 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4262 (unsigned long long)frame_addr);
4263 target_sigset_t target_set;
4264 sigset_t set;
4265
4266 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
4267 goto badframe;
4268 }
f5f601af 4269 __get_user(target_set.sig[0], &frame->sc.oldmask[0]);
a4c075f1
UH		 4270
4271 target_to_host_sigset_internal(&set, &target_set);
1c275925 4272 do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
a4c075f1
UH		 4273
4274 if (restore_sigregs(env, &frame->sregs)) {
4275 goto badframe;
4276 }
4277
4278 unlock_user_struct(frame, frame_addr, 0);
4279 return env->regs[2];
4280
4281badframe:
a4c075f1
UH		 4282 force_sig(TARGET_SIGSEGV);
4283 return 0;
4284}
4285
05390248 4286long do_rt_sigreturn(CPUS390XState *env)
a4c075f1
UH		 4287{
4288 rt_sigframe *frame;
4289 abi_ulong frame_addr = env->regs[15];
4290 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4291 (unsigned long long)frame_addr);
4292 sigset_t set;
4293
4294 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
4295 goto badframe;
4296 }
6fea2ea4 4297 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
a4c075f1 4298
1c275925 4299 do_sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
a4c075f1 4300
6fea2ea4 4301 if (restore_sigregs(env, &frame->uc.tuc_mcontext)) {
a4c075f1
UH		 4302 goto badframe;
4303 }
4304
6fea2ea4 4305 if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0,
a4c075f1
UH		 4306 get_sp_from_cpustate(env)) == -EFAULT) {
4307 goto badframe;
4308 }
4309 unlock_user_struct(frame, frame_addr, 0);
4310 return env->regs[2];
4311
4312badframe:
4313 unlock_user_struct(frame, frame_addr, 0);
4314 force_sig(TARGET_SIGSEGV);
4315 return 0;
4316}
4317
bcd4933a
NF		 4318#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
4319
4320/* FIXME: Many of the structures are defined for both PPC and PPC64, but
4321 the signal handling is different enough that we haven't implemented
4322 support for PPC64 yet. Hence the restriction above.
4323
4324 There are various #if'd blocks for code for TARGET_PPC64. These
4325 blocks should go away so that we can successfully run 32-bit and
4326 64-bit binaries on a QEMU configured for PPC64. */
4327
4328/* Size of dummy stack frame allocated when calling signal handler.
4329 See arch/powerpc/include/asm/ptrace.h. */
4330#if defined(TARGET_PPC64)
4331#define SIGNAL_FRAMESIZE 128
4332#else
4333#define SIGNAL_FRAMESIZE 64
4334#endif
4335
4336/* See arch/powerpc/include/asm/sigcontext.h. */
4337struct target_sigcontext {
4338 target_ulong _unused[4];
4339 int32_t signal;
4340#if defined(TARGET_PPC64)
4341 int32_t pad0;
4342#endif
4343 target_ulong handler;
4344 target_ulong oldmask;
4345 target_ulong regs; /* struct pt_regs __user * */
4346 /* TODO: PPC64 includes extra bits here. */
4347};
4348
4349/* Indices for target_mcontext.mc_gregs, below.
4350 See arch/powerpc/include/asm/ptrace.h for details. */
4351enum {
4352 TARGET_PT_R0 = 0,
4353 TARGET_PT_R1 = 1,
4354 TARGET_PT_R2 = 2,
4355 TARGET_PT_R3 = 3,
4356 TARGET_PT_R4 = 4,
4357 TARGET_PT_R5 = 5,
4358 TARGET_PT_R6 = 6,
4359 TARGET_PT_R7 = 7,
4360 TARGET_PT_R8 = 8,
4361 TARGET_PT_R9 = 9,
4362 TARGET_PT_R10 = 10,
4363 TARGET_PT_R11 = 11,
4364 TARGET_PT_R12 = 12,
4365 TARGET_PT_R13 = 13,
4366 TARGET_PT_R14 = 14,
4367 TARGET_PT_R15 = 15,
4368 TARGET_PT_R16 = 16,
4369 TARGET_PT_R17 = 17,
4370 TARGET_PT_R18 = 18,
4371 TARGET_PT_R19 = 19,
4372 TARGET_PT_R20 = 20,
4373 TARGET_PT_R21 = 21,
4374 TARGET_PT_R22 = 22,
4375 TARGET_PT_R23 = 23,
4376 TARGET_PT_R24 = 24,
4377 TARGET_PT_R25 = 25,
4378 TARGET_PT_R26 = 26,
4379 TARGET_PT_R27 = 27,
4380 TARGET_PT_R28 = 28,
4381 TARGET_PT_R29 = 29,
4382 TARGET_PT_R30 = 30,
4383 TARGET_PT_R31 = 31,
4384 TARGET_PT_NIP = 32,
4385 TARGET_PT_MSR = 33,
4386 TARGET_PT_ORIG_R3 = 34,
4387 TARGET_PT_CTR = 35,
4388 TARGET_PT_LNK = 36,
4389 TARGET_PT_XER = 37,
4390 TARGET_PT_CCR = 38,
4391 /* Yes, there are two registers with #39. One is 64-bit only. */
4392 TARGET_PT_MQ = 39,
4393 TARGET_PT_SOFTE = 39,
4394 TARGET_PT_TRAP = 40,
4395 TARGET_PT_DAR = 41,
4396 TARGET_PT_DSISR = 42,
4397 TARGET_PT_RESULT = 43,
4398 TARGET_PT_REGS_COUNT = 44
4399};
4400
4401/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
4402 on 64-bit PPC, sigcontext and mcontext are one and the same. */
4403struct target_mcontext {
4404 target_ulong mc_gregs[48];
4405 /* Includes fpscr. */
4406 uint64_t mc_fregs[33];
4407 target_ulong mc_pad[2];
4408 /* We need to handle Altivec and SPE at the same time, which no
4409 kernel needs to do. Fortunately, the kernel defines this bit to
4410 be Altivec-register-large all the time, rather than trying to
4411 twiddle it based on the specific platform. */
4412 union {
4413 /* SPE vector registers. One extra for SPEFSCR. */
4414 uint32_t spe[33];
4415 /* Altivec vector registers. The packing of VSCR and VRSAVE
4416 varies depending on whether we're PPC64 or not: PPC64 splits
4417 them apart; PPC32 stuffs them together. */
4418#if defined(TARGET_PPC64)
3efa9a67 4419#define QEMU_NVRREG 34
bcd4933a 4420#else
3efa9a67 4421#define QEMU_NVRREG 33
bcd4933a 4422#endif
c227f099 4423 ppc_avr_t altivec[QEMU_NVRREG];
3efa9a67 4424#undef QEMU_NVRREG
bcd4933a
NF		 4425 } mc_vregs __attribute__((__aligned__(16)));
4426};
4427
4428struct target_ucontext {
60e99246
AJ		 4429 target_ulong tuc_flags;
4430 target_ulong tuc_link; /* struct ucontext __user * */
4431 struct target_sigaltstack tuc_stack;
bcd4933a 4432#if !defined(TARGET_PPC64)
60e99246
AJ		 4433 int32_t tuc_pad[7];
4434 target_ulong tuc_regs; /* struct mcontext __user *
bcd4933a
NF		 4435 points to uc_mcontext field */
4436#endif
60e99246 4437 target_sigset_t tuc_sigmask;
bcd4933a 4438#if defined(TARGET_PPC64)
c227f099 4439 target_sigset_t unused[15]; /* Allow for uc_sigmask growth */
60e99246 4440 struct target_sigcontext tuc_mcontext;
bcd4933a 4441#else
60e99246
AJ		 4442 int32_t tuc_maskext[30];
4443 int32_t tuc_pad2[3];
4444 struct target_mcontext tuc_mcontext;
bcd4933a
NF		 4445#endif
4446};
4447
4448/* See arch/powerpc/kernel/signal_32.c. */
4449struct target_sigframe {
4450 struct target_sigcontext sctx;
4451 struct target_mcontext mctx;
4452 int32_t abigap[56];
4453};
4454
4455struct target_rt_sigframe {
4456 struct target_siginfo info;
4457 struct target_ucontext uc;
4458 int32_t abigap[56];
4459};
4460
4461/* We use the mc_pad field for the signal return trampoline. */
4462#define tramp mc_pad
4463
4464/* See arch/powerpc/kernel/signal.c. */
4465static target_ulong get_sigframe(struct target_sigaction *ka,
05390248 4466 CPUPPCState *env,
bcd4933a
NF		 4467 int frame_size)
4468{
4469 target_ulong oldsp, newsp;
4470
4471 oldsp = env->gpr[1];
4472
4473 if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
32a2003a 4474 (sas_ss_flags(oldsp) == 0)) {
bcd4933a
NF		 4475 oldsp = (target_sigaltstack_used.ss_sp
4476 + target_sigaltstack_used.ss_size);
4477 }
4478
4479 newsp = (oldsp - frame_size) & ~0xFUL;
4480
4481 return newsp;
4482}
4483
c650c008 4484static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame,
bcd4933a
NF		 4485 int sigret)
4486{
4487 target_ulong msr = env->msr;
4488 int i;
4489 target_ulong ccr = 0;
4490
4491 /* In general, the kernel attempts to be intelligent about what it
4492 needs to save for Altivec/FP/SPE registers. We don't care that
4493 much, so we just go ahead and save everything. */
4494
4495 /* Save general registers. */
4496 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
c650c008 4497 __put_user(env->gpr[i], &frame->mc_gregs[i]);
bcd4933a 4498 }
c650c008
RV		 4499 __put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
4500 __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
4501 __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
4502 __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
bcd4933a
NF		 4503
4504 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
4505 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
4506 }
c650c008 4507 __put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
bcd4933a
NF		 4508
4509 /* Save Altivec registers if necessary. */
4510 if (env->insns_flags & PPC_ALTIVEC) {
4511 for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
c227f099
AL		 4512 ppc_avr_t *avr = &env->avr[i];
4513 ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
bcd4933a 4514
c650c008
RV		 4515 __put_user(avr->u64[0], &vreg->u64[0]);
4516 __put_user(avr->u64[1], &vreg->u64[1]);
bcd4933a
NF		 4517 }
4518 /* Set MSR_VR in the saved MSR value to indicate that
4519 frame->mc_vregs contains valid data. */
4520 msr |= MSR_VR;
c650c008
RV		 4521 __put_user((uint32_t)env->spr[SPR_VRSAVE],
4522 &frame->mc_vregs.altivec[32].u32[3]);
bcd4933a
NF		 4523 }
4524
4525 /* Save floating point registers. */
4526 if (env->insns_flags & PPC_FLOAT) {
4527 for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
c650c008 4528 __put_user(env->fpr[i], &frame->mc_fregs[i]);
bcd4933a 4529 }
c650c008 4530 __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]);
bcd4933a
NF		 4531 }
4532
4533 /* Save SPE registers. The kernel only saves the high half. */
4534 if (env->insns_flags & PPC_SPE) {
4535#if defined(TARGET_PPC64)
4536 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
c650c008 4537 __put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4538 }
4539#else
4540 for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
c650c008 4541 __put_user(env->gprh[i], &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4542 }
4543#endif
4544 /* Set MSR_SPE in the saved MSR value to indicate that
4545 frame->mc_vregs contains valid data. */
4546 msr |= MSR_SPE;
c650c008 4547 __put_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
bcd4933a
NF		 4548 }
4549
4550 /* Store MSR. */
c650c008 4551 __put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
bcd4933a
NF		 4552
4553 /* Set up the sigreturn trampoline: li r0,sigret; sc. */
4554 if (sigret) {
c650c008
RV		 4555 __put_user(0x38000000UL | sigret, &frame->tramp[0]);
4556 __put_user(0x44000002UL, &frame->tramp[1]);
bcd4933a 4557 }
bcd4933a
NF		 4558}
4559
c650c008
RV		 4560static void restore_user_regs(CPUPPCState *env,
4561 struct target_mcontext *frame, int sig)
bcd4933a
NF		 4562{
4563 target_ulong save_r2 = 0;
4564 target_ulong msr;
4565 target_ulong ccr;
4566
4567 int i;
4568
4569 if (!sig) {
4570 save_r2 = env->gpr[2];
4571 }
4572
4573 /* Restore general registers. */
4574 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
c650c008 4575 __get_user(env->gpr[i], &frame->mc_gregs[i]);
bcd4933a 4576 }
c650c008
RV		 4577 __get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP]);
4578 __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR]);
4579 __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK]);
4580 __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]);
4581 __get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]);
bcd4933a
NF		 4582
4583 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
4584 env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf;
4585 }
4586
4587 if (!sig) {
4588 env->gpr[2] = save_r2;
4589 }
4590 /* Restore MSR. */
c650c008 4591 __get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
bcd4933a
NF		 4592
4593 /* If doing signal return, restore the previous little-endian mode. */
4594 if (sig)
4595 env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE);
4596
4597 /* Restore Altivec registers if necessary. */
4598 if (env->insns_flags & PPC_ALTIVEC) {
4599 for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
c227f099
AL		 4600 ppc_avr_t *avr = &env->avr[i];
4601 ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
bcd4933a 4602
c650c008
RV		 4603 __get_user(avr->u64[0], &vreg->u64[0]);
4604 __get_user(avr->u64[1], &vreg->u64[1]);
bcd4933a
NF		 4605 }
4606 /* Set MSR_VEC in the saved MSR value to indicate that
4607 frame->mc_vregs contains valid data. */
c650c008
RV		 4608 __get_user(env->spr[SPR_VRSAVE],
4609 (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3]));
bcd4933a
NF		 4610 }
4611
4612 /* Restore floating point registers. */
4613 if (env->insns_flags & PPC_FLOAT) {
4614 uint64_t fpscr;
4615 for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
c650c008 4616 __get_user(env->fpr[i], &frame->mc_fregs[i]);
bcd4933a 4617 }
c650c008 4618 __get_user(fpscr, &frame->mc_fregs[32]);
bcd4933a
NF		 4619 env->fpscr = (uint32_t) fpscr;
4620 }
4621
4622 /* Save SPE registers. The kernel only saves the high half. */
4623 if (env->insns_flags & PPC_SPE) {
4624#if defined(TARGET_PPC64)
4625 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
4626 uint32_t hi;
4627
c650c008 4628 __get_user(hi, &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4629 env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]);
4630 }
4631#else
4632 for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
c650c008 4633 __get_user(env->gprh[i], &frame->mc_vregs.spe[i]);
bcd4933a
NF		 4634 }
4635#endif
c650c008 4636 __get_user(env->spe_fscr, &frame->mc_vregs.spe[32]);
bcd4933a 4637 }
bcd4933a
NF		 4638}
4639
4640static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4641 target_sigset_t *set, CPUPPCState *env)
bcd4933a
NF		 4642{
4643 struct target_sigframe *frame;
4644 struct target_sigcontext *sc;
4645 target_ulong frame_addr, newsp;
4646 int err = 0;
4647 int signal;
4648
4649 frame_addr = get_sigframe(ka, env, sizeof(*frame));
4650 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
4651 goto sigsegv;
4652 sc = &frame->sctx;
4653
4654 signal = current_exec_domain_sig(sig);
4655
1d8b512b
RV		 4656 __put_user(ka->_sa_handler, &sc->handler);
4657 __put_user(set->sig[0], &sc->oldmask);
bcd4933a 4658#if defined(TARGET_PPC64)
1d8b512b 4659 __put_user(set->sig[0] >> 32, &sc->_unused[3]);
bcd4933a 4660#else
1d8b512b 4661 __put_user(set->sig[1], &sc->_unused[3]);
bcd4933a 4662#endif
1d8b512b
RV		 4663 __put_user(h2g(&frame->mctx), &sc->regs);
4664 __put_user(sig, &sc->signal);
bcd4933a
NF		 4665
4666 /* Save user regs. */
c650c008 4667 save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn);
bcd4933a
NF		 4668
4669 /* The kernel checks for the presence of a VDSO here. We don't
4670 emulate a vdso, so use a sigreturn system call. */
4671 env->lr = (target_ulong) h2g(frame->mctx.tramp);
4672
4673 /* Turn off all fp exceptions. */
4674 env->fpscr = 0;
4675
4676 /* Create a stack frame for the caller of the handler. */
4677 newsp = frame_addr - SIGNAL_FRAMESIZE;
beb526b1 4678 err |= put_user(env->gpr[1], newsp, target_ulong);
bcd4933a
NF		 4679
4680 if (err)
4681 goto sigsegv;
4682
4683 /* Set up registers for signal handler. */
4684 env->gpr[1] = newsp;
4685 env->gpr[3] = signal;
61993a67 4686 env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
bcd4933a
NF		 4687 env->nip = (target_ulong) ka->_sa_handler;
4688 /* Signal handlers are entered in big-endian mode. */
4689 env->msr &= ~MSR_LE;
4690
4691 unlock_user_struct(frame, frame_addr, 1);
4692 return;
4693
4694sigsegv:
4695 unlock_user_struct(frame, frame_addr, 1);
eeacee4d 4696 qemu_log("segfaulting from setup_frame\n");
66393fb9 4697 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4698}
4699
4700static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 4701 target_siginfo_t *info,
05390248 4702 target_sigset_t *set, CPUPPCState *env)
bcd4933a
NF		 4703{
4704 struct target_rt_sigframe *rt_sf;
4705 struct target_mcontext *frame;
4706 target_ulong rt_sf_addr, newsp = 0;
4707 int i, err = 0;
4708 int signal;
4709
4710 rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
4711 if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
4712 goto sigsegv;
4713
4714 signal = current_exec_domain_sig(sig);
4715
b0fd8d18 4716 copy_siginfo_to_user(&rt_sf->info, info);
bcd4933a 4717
1d8b512b
RV		 4718 __put_user(0, &rt_sf->uc.tuc_flags);
4719 __put_user(0, &rt_sf->uc.tuc_link);
4720 __put_user((target_ulong)target_sigaltstack_used.ss_sp,
4721 &rt_sf->uc.tuc_stack.ss_sp);
4722 __put_user(sas_ss_flags(env->gpr[1]),
4723 &rt_sf->uc.tuc_stack.ss_flags);
4724 __put_user(target_sigaltstack_used.ss_size,
4725 &rt_sf->uc.tuc_stack.ss_size);
4726 __put_user(h2g (&rt_sf->uc.tuc_mcontext),
4727 &rt_sf->uc.tuc_regs);
bcd4933a 4728 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1d8b512b 4729 __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]);
bcd4933a
NF		 4730 }
4731
60e99246 4732 frame = &rt_sf->uc.tuc_mcontext;
c650c008 4733 save_user_regs(env, frame, TARGET_NR_rt_sigreturn);
bcd4933a
NF		 4734
4735 /* The kernel checks for the presence of a VDSO here. We don't
4736 emulate a vdso, so use a sigreturn system call. */
4737 env->lr = (target_ulong) h2g(frame->tramp);
4738
4739 /* Turn off all fp exceptions. */
4740 env->fpscr = 0;
4741
4742 /* Create a stack frame for the caller of the handler. */
4743 newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
1d8b512b 4744 __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
bcd4933a
NF		 4745
4746 if (err)
4747 goto sigsegv;
4748
4749 /* Set up registers for signal handler. */
4750 env->gpr[1] = newsp;
4751 env->gpr[3] = (target_ulong) signal;
4752 env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
4753 env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
4754 env->gpr[6] = (target_ulong) h2g(rt_sf);
4755 env->nip = (target_ulong) ka->_sa_handler;
4756 /* Signal handlers are entered in big-endian mode. */
4757 env->msr &= ~MSR_LE;
4758
4759 unlock_user_struct(rt_sf, rt_sf_addr, 1);
4760 return;
4761
4762sigsegv:
4763 unlock_user_struct(rt_sf, rt_sf_addr, 1);
eeacee4d 4764 qemu_log("segfaulting from setup_rt_frame\n");
66393fb9 4765 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4766
4767}
4768
05390248 4769long do_sigreturn(CPUPPCState *env)
bcd4933a
NF		 4770{
4771 struct target_sigcontext *sc = NULL;
4772 struct target_mcontext *sr = NULL;
b04636f8 4773 target_ulong sr_addr = 0, sc_addr;
bcd4933a 4774 sigset_t blocked;
c227f099 4775 target_sigset_t set;
bcd4933a
NF		 4776
4777 sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE;
4778 if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1))
4779 goto sigsegv;
4780
4781#if defined(TARGET_PPC64)
4782 set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32);
4783#else
f5f601af
RV		 4784 __get_user(set.sig[0], &sc->oldmask);
4785 __get_user(set.sig[1], &sc->_unused[3]);
bcd4933a
NF		 4786#endif
4787 target_to_host_sigset_internal(&blocked, &set);
1c275925 4788 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
bcd4933a 4789
f5f601af 4790 __get_user(sr_addr, &sc->regs);
bcd4933a
NF		 4791 if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1))
4792 goto sigsegv;
c650c008 4793 restore_user_regs(env, sr, 1);
bcd4933a
NF		 4794
4795 unlock_user_struct(sr, sr_addr, 1);
4796 unlock_user_struct(sc, sc_addr, 1);
4797 return -TARGET_QEMU_ESIGRETURN;
4798
4799sigsegv:
4800 unlock_user_struct(sr, sr_addr, 1);
4801 unlock_user_struct(sc, sc_addr, 1);
eeacee4d 4802 qemu_log("segfaulting from do_sigreturn\n");
66393fb9 4803 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4804 return 0;
4805}
4806
4807/* See arch/powerpc/kernel/signal_32.c. */
05390248 4808static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig)
bcd4933a
NF		 4809{
4810 struct target_mcontext *mcp;
4811 target_ulong mcp_addr;
4812 sigset_t blocked;
c227f099 4813 target_sigset_t set;
bcd4933a 4814
60e99246 4815 if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask),
bcd4933a
NF		 4816 sizeof (set)))
4817 return 1;
4818
4819#if defined(TARGET_PPC64)
4820 fprintf (stderr, "do_setcontext: not implemented\n");
4821 return 0;
4822#else
9e918dc9 4823 __get_user(mcp_addr, &ucp->tuc_regs);
bcd4933a
NF		 4824
4825 if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1))
4826 return 1;
4827
4828 target_to_host_sigset_internal(&blocked, &set);
1c275925 4829 do_sigprocmask(SIG_SETMASK, &blocked, NULL);
c650c008 4830 restore_user_regs(env, mcp, sig);
bcd4933a
NF		 4831
4832 unlock_user_struct(mcp, mcp_addr, 1);
4833 return 0;
bcd4933a
NF		 4834#endif
4835}
4836
05390248 4837long do_rt_sigreturn(CPUPPCState *env)
bcd4933a
NF		 4838{
4839 struct target_rt_sigframe *rt_sf = NULL;
4840 target_ulong rt_sf_addr;
4841
4842 rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16;
4843 if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1))
4844 goto sigsegv;
4845
4846 if (do_setcontext(&rt_sf->uc, env, 1))
4847 goto sigsegv;
4848
4849 do_sigaltstack(rt_sf_addr
60e99246 4850 + offsetof(struct target_rt_sigframe, uc.tuc_stack),
bcd4933a
NF		 4851 0, env->gpr[1]);
4852
4853 unlock_user_struct(rt_sf, rt_sf_addr, 1);
4854 return -TARGET_QEMU_ESIGRETURN;
4855
4856sigsegv:
4857 unlock_user_struct(rt_sf, rt_sf_addr, 1);
eeacee4d 4858 qemu_log("segfaulting from do_rt_sigreturn\n");
66393fb9 4859 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4860 return 0;
4861}
4862
492a8744
LV		 4863#elif defined(TARGET_M68K)
4864
4865struct target_sigcontext {
4866 abi_ulong sc_mask;
4867 abi_ulong sc_usp;
4868 abi_ulong sc_d0;
4869 abi_ulong sc_d1;
4870 abi_ulong sc_a0;
4871 abi_ulong sc_a1;
4872 unsigned short sc_sr;
4873 abi_ulong sc_pc;
4874};
4875
4876struct target_sigframe
4877{
4878 abi_ulong pretcode;
4879 int sig;
4880 int code;
4881 abi_ulong psc;
4882 char retcode[8];
4883 abi_ulong extramask[TARGET_NSIG_WORDS-1];
4884 struct target_sigcontext sc;
4885};
7181155d 4886
c227f099 4887typedef int target_greg_t;
7181155d 4888#define TARGET_NGREG 18
c227f099 4889typedef target_greg_t target_gregset_t[TARGET_NGREG];
7181155d
LV		 4890
4891typedef struct target_fpregset {
4892 int f_fpcntl[3];
4893 int f_fpregs[8*3];
c227f099 4894} target_fpregset_t;
7181155d
LV		 4895
4896struct target_mcontext {
4897 int version;
c227f099
AL		 4898 target_gregset_t gregs;
4899 target_fpregset_t fpregs;
7181155d
LV		 4900};
4901
4902#define TARGET_MCONTEXT_VERSION 2
4903
4904struct target_ucontext {
60e99246
AJ		 4905 abi_ulong tuc_flags;
4906 abi_ulong tuc_link;
4907 target_stack_t tuc_stack;
4908 struct target_mcontext tuc_mcontext;
4909 abi_long tuc_filler[80];
4910 target_sigset_t tuc_sigmask;
7181155d
LV		 4911};
4912
4913struct target_rt_sigframe
4914{
4915 abi_ulong pretcode;
4916 int sig;
4917 abi_ulong pinfo;
4918 abi_ulong puc;
4919 char retcode[8];
4920 struct target_siginfo info;
4921 struct target_ucontext uc;
4922};
492a8744 4923
41ecc72b
RV		 4924static void setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env,
4925 abi_ulong mask)
492a8744 4926{
1d8b512b
RV		 4927 __put_user(mask, &sc->sc_mask);
4928 __put_user(env->aregs[7], &sc->sc_usp);
4929 __put_user(env->dregs[0], &sc->sc_d0);
4930 __put_user(env->dregs[1], &sc->sc_d1);
4931 __put_user(env->aregs[0], &sc->sc_a0);
4932 __put_user(env->aregs[1], &sc->sc_a1);
4933 __put_user(env->sr, &sc->sc_sr);
4934 __put_user(env->pc, &sc->sc_pc);
492a8744
LV		 4935}
4936
016d2e1d 4937static void
05390248 4938restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0)
492a8744 4939{
492a8744
LV		 4940 int temp;
4941
1d8b512b
RV		 4942 __get_user(env->aregs[7], &sc->sc_usp);
4943 __get_user(env->dregs[1], &sc->sc_d1);
4944 __get_user(env->aregs[0], &sc->sc_a0);
4945 __get_user(env->aregs[1], &sc->sc_a1);
4946 __get_user(env->pc, &sc->sc_pc);
4947 __get_user(temp, &sc->sc_sr);
492a8744
LV		 4948 env->sr = (env->sr & 0xff00) | (temp & 0xff);
4949
4950 *pd0 = tswapl(sc->sc_d0);
492a8744
LV		 4951}
4952
4953/*
4954 * Determine which stack to use..
4955 */
4956static inline abi_ulong
05390248
AF		 4957get_sigframe(struct target_sigaction *ka, CPUM68KState *regs,
4958 size_t frame_size)
492a8744
LV		 4959{
4960 unsigned long sp;
4961
4962 sp = regs->aregs[7];
4963
4964 /* This is the X/Open sanctioned signal stack switching. */
4965 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
4966 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
4967 }
4968
4969 return ((sp - frame_size) & -8UL);
4970}
4971
4972static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4973 target_sigset_t *set, CPUM68KState *env)
492a8744
LV		 4974{
4975 struct target_sigframe *frame;
4976 abi_ulong frame_addr;
4977 abi_ulong retcode_addr;
4978 abi_ulong sc_addr;
492a8744
LV		 4979 int i;
4980
4981 frame_addr = get_sigframe(ka, env, sizeof *frame);
4982 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
4983 goto give_sigsegv;
4984
1d8b512b 4985 __put_user(sig, &frame->sig);
492a8744
LV		 4986
4987 sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
1d8b512b 4988 __put_user(sc_addr, &frame->psc);
492a8744 4989
41ecc72b 4990 setup_sigcontext(&frame->sc, env, set->sig[0]);
492a8744
LV		 4991
4992 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
0188fadb 4993 __put_user(set->sig[i], &frame->extramask[i - 1]);
492a8744
LV		 4994 }
4995
4996 /* Set up to return from userspace. */
4997
4998 retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
1d8b512b 4999 __put_user(retcode_addr, &frame->pretcode);
492a8744
LV		 5000
5001 /* moveq #,d0; trap #0 */
5002
1d8b512b 5003 __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
492a8744
LV		 5004 (long *)(frame->retcode));
5005
492a8744
LV		 5006 /* Set up to return from userspace */
5007
5008 env->aregs[7] = frame_addr;
5009 env->pc = ka->_sa_handler;
5010
5011 unlock_user_struct(frame, frame_addr, 1);
5012 return;
5013
5014give_sigsegv:
66393fb9 5015 force_sig(TARGET_SIGSEGV);
492a8744
LV		 5016}
5017
7181155d 5018static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
05390248 5019 CPUM68KState *env)
7181155d 5020{
60e99246 5021 target_greg_t *gregs = uc->tuc_mcontext.gregs;
7181155d 5022
1d8b512b
RV		 5023 __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version);
5024 __put_user(env->dregs[0], &gregs[0]);
5025 __put_user(env->dregs[1], &gregs[1]);
5026 __put_user(env->dregs[2], &gregs[2]);
5027 __put_user(env->dregs[3], &gregs[3]);
5028 __put_user(env->dregs[4], &gregs[4]);
5029 __put_user(env->dregs[5], &gregs[5]);
5030 __put_user(env->dregs[6], &gregs[6]);
5031 __put_user(env->dregs[7], &gregs[7]);
5032 __put_user(env->aregs[0], &gregs[8]);
5033 __put_user(env->aregs[1], &gregs[9]);
5034 __put_user(env->aregs[2], &gregs[10]);
5035 __put_user(env->aregs[3], &gregs[11]);
5036 __put_user(env->aregs[4], &gregs[12]);
5037 __put_user(env->aregs[5], &gregs[13]);
5038 __put_user(env->aregs[6], &gregs[14]);
5039 __put_user(env->aregs[7], &gregs[15]);
5040 __put_user(env->pc, &gregs[16]);
5041 __put_user(env->sr, &gregs[17]);
7181155d 5042
1d8b512b 5043 return 0;
7181155d
LV		 5044}
5045
05390248 5046static inline int target_rt_restore_ucontext(CPUM68KState *env,
7181155d
LV		 5047 struct target_ucontext *uc,
5048 int *pd0)
5049{
5050 int temp;
60e99246 5051 target_greg_t *gregs = uc->tuc_mcontext.gregs;
7181155d 5052
1d8b512b 5053 __get_user(temp, &uc->tuc_mcontext.version);
7181155d
LV		 5054 if (temp != TARGET_MCONTEXT_VERSION)
5055 goto badframe;
5056
5057 /* restore passed registers */
1d8b512b
RV		 5058 __get_user(env->dregs[0], &gregs[0]);
5059 __get_user(env->dregs[1], &gregs[1]);
5060 __get_user(env->dregs[2], &gregs[2]);
5061 __get_user(env->dregs[3], &gregs[3]);
5062 __get_user(env->dregs[4], &gregs[4]);
5063 __get_user(env->dregs[5], &gregs[5]);
5064 __get_user(env->dregs[6], &gregs[6]);
5065 __get_user(env->dregs[7], &gregs[7]);
5066 __get_user(env->aregs[0], &gregs[8]);
5067 __get_user(env->aregs[1], &gregs[9]);
5068 __get_user(env->aregs[2], &gregs[10]);
5069 __get_user(env->aregs[3], &gregs[11]);
5070 __get_user(env->aregs[4], &gregs[12]);
5071 __get_user(env->aregs[5], &gregs[13]);
5072 __get_user(env->aregs[6], &gregs[14]);
5073 __get_user(env->aregs[7], &gregs[15]);
5074 __get_user(env->pc, &gregs[16]);
5075 __get_user(temp, &gregs[17]);
7181155d
LV		 5076 env->sr = (env->sr & 0xff00) | (temp & 0xff);
5077
5078 *pd0 = env->dregs[0];
1d8b512b 5079 return 0;
7181155d
LV		 5080
5081badframe:
5082 return 1;
5083}
5084
492a8744 5085static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 5086 target_siginfo_t *info,
05390248 5087 target_sigset_t *set, CPUM68KState *env)
492a8744 5088{
7181155d
LV		 5089 struct target_rt_sigframe *frame;
5090 abi_ulong frame_addr;
5091 abi_ulong retcode_addr;
5092 abi_ulong info_addr;
5093 abi_ulong uc_addr;
5094 int err = 0;
5095 int i;
5096
5097 frame_addr = get_sigframe(ka, env, sizeof *frame);
5098 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
5099 goto give_sigsegv;
5100
1d8b512b 5101 __put_user(sig, &frame->sig);
7181155d
LV		 5102
5103 info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
1d8b512b 5104 __put_user(info_addr, &frame->pinfo);
7181155d
LV		 5105
5106 uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
1d8b512b 5107 __put_user(uc_addr, &frame->puc);
7181155d 5108
b0fd8d18 5109 copy_siginfo_to_user(&frame->info, info);
7181155d
LV		 5110
5111 /* Create the ucontext */
5112
1d8b512b
RV		 5113 __put_user(0, &frame->uc.tuc_flags);
5114 __put_user(0, &frame->uc.tuc_link);
5115 __put_user(target_sigaltstack_used.ss_sp,
5116 &frame->uc.tuc_stack.ss_sp);
5117 __put_user(sas_ss_flags(env->aregs[7]),
5118 &frame->uc.tuc_stack.ss_flags);
5119 __put_user(target_sigaltstack_used.ss_size,
5120 &frame->uc.tuc_stack.ss_size);
7181155d
LV		 5121 err |= target_rt_setup_ucontext(&frame->uc, env);
5122
5123 if (err)
5124 goto give_sigsegv;
5125
5126 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
0188fadb 5127 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
7181155d
LV		 5128 }
5129
5130 /* Set up to return from userspace. */
5131
5132 retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
1d8b512b 5133 __put_user(retcode_addr, &frame->pretcode);
7181155d
LV		 5134
5135 /* moveq #,d0; notb d0; trap #0 */
5136
1d8b512b
RV		 5137 __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
5138 (long *)(frame->retcode + 0));
5139 __put_user(0x4e40, (short *)(frame->retcode + 4));
7181155d
LV		 5140
5141 if (err)
5142 goto give_sigsegv;
5143
5144 /* Set up to return from userspace */
5145
5146 env->aregs[7] = frame_addr;
5147 env->pc = ka->_sa_handler;
5148
5149 unlock_user_struct(frame, frame_addr, 1);
5150 return;
5151
5152give_sigsegv:
5153 unlock_user_struct(frame, frame_addr, 1);
66393fb9 5154 force_sig(TARGET_SIGSEGV);
492a8744
LV		 5155}
5156
05390248 5157long do_sigreturn(CPUM68KState *env)
492a8744
LV		 5158{
5159 struct target_sigframe *frame;
5160 abi_ulong frame_addr = env->aregs[7] - 4;
c227f099 5161 target_sigset_t target_set;
492a8744
LV		 5162 sigset_t set;
5163 int d0, i;
5164
5165 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
5166 goto badframe;
5167
5168 /* set blocked signals */
5169
f5f601af 5170 __get_user(target_set.sig[0], &frame->sc.sc_mask);
492a8744
LV		 5171
5172 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
f5f601af 5173 __get_user(target_set.sig[i], &frame->extramask[i - 1]);
492a8744
LV		 5174 }
5175
5176 target_to_host_sigset_internal(&set, &target_set);
1c275925 5177 do_sigprocmask(SIG_SETMASK, &set, NULL);
492a8744
LV		 5178
5179 /* restore registers */
5180
016d2e1d 5181 restore_sigcontext(env, &frame->sc, &d0);
492a8744
LV		 5182
5183 unlock_user_struct(frame, frame_addr, 0);
5184 return d0;
5185
5186badframe:
492a8744
LV		 5187 force_sig(TARGET_SIGSEGV);
5188 return 0;
5189}
5190
05390248 5191long do_rt_sigreturn(CPUM68KState *env)
492a8744 5192{
7181155d
LV		 5193 struct target_rt_sigframe *frame;
5194 abi_ulong frame_addr = env->aregs[7] - 4;
c227f099 5195 target_sigset_t target_set;
7181155d
LV		 5196 sigset_t set;
5197 int d0;
5198
5199 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
5200 goto badframe;
5201
5202 target_to_host_sigset_internal(&set, &target_set);
1c275925 5203 do_sigprocmask(SIG_SETMASK, &set, NULL);
7181155d
LV		 5204
5205 /* restore registers */
5206
5207 if (target_rt_restore_ucontext(env, &frame->uc, &d0))
5208 goto badframe;
5209
5210 if (do_sigaltstack(frame_addr +
60e99246 5211 offsetof(struct target_rt_sigframe, uc.tuc_stack),
7181155d
LV		 5212 0, get_sp_from_cpustate(env)) == -EFAULT)
5213 goto badframe;
5214
5215 unlock_user_struct(frame, frame_addr, 0);
5216 return d0;
5217
5218badframe:
5219 unlock_user_struct(frame, frame_addr, 0);
5220 force_sig(TARGET_SIGSEGV);
5221 return 0;
492a8744
LV		 5222}
5223
6049f4f8
RH		 5224#elif defined(TARGET_ALPHA)
5225
5226struct target_sigcontext {
5227 abi_long sc_onstack;
5228 abi_long sc_mask;
5229 abi_long sc_pc;
5230 abi_long sc_ps;
5231 abi_long sc_regs[32];
5232 abi_long sc_ownedfp;
5233 abi_long sc_fpregs[32];
5234 abi_ulong sc_fpcr;
5235 abi_ulong sc_fp_control;
5236 abi_ulong sc_reserved1;
5237 abi_ulong sc_reserved2;
5238 abi_ulong sc_ssize;
5239 abi_ulong sc_sbase;
5240 abi_ulong sc_traparg_a0;
5241 abi_ulong sc_traparg_a1;
5242 abi_ulong sc_traparg_a2;
5243 abi_ulong sc_fp_trap_pc;
5244 abi_ulong sc_fp_trigger_sum;
5245 abi_ulong sc_fp_trigger_inst;
5246};
5247
5248struct target_ucontext {
60e99246
AJ		 5249 abi_ulong tuc_flags;
5250 abi_ulong tuc_link;
5251 abi_ulong tuc_osf_sigmask;
5252 target_stack_t tuc_stack;
5253 struct target_sigcontext tuc_mcontext;
5254 target_sigset_t tuc_sigmask;
6049f4f8
RH		 5255};
5256
5257struct target_sigframe {
5258 struct target_sigcontext sc;
5259 unsigned int retcode[3];
5260};
5261
5262struct target_rt_sigframe {
5263 target_siginfo_t info;
5264 struct target_ucontext uc;
5265 unsigned int retcode[3];
5266};
5267
5268#define INSN_MOV_R30_R16 0x47fe0410
5269#define INSN_LDI_R0 0x201f0000
5270#define INSN_CALLSYS 0x00000083
5271
41ecc72b 5272static void setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env,
6049f4f8
RH		 5273 abi_ulong frame_addr, target_sigset_t *set)
5274{
41ecc72b 5275 int i;
6049f4f8 5276
1d8b512b
RV		 5277 __put_user(on_sig_stack(frame_addr), &sc->sc_onstack);
5278 __put_user(set->sig[0], &sc->sc_mask);
5279 __put_user(env->pc, &sc->sc_pc);
5280 __put_user(8, &sc->sc_ps);
6049f4f8
RH		 5281
5282 for (i = 0; i < 31; ++i) {
1d8b512b 5283 __put_user(env->ir[i], &sc->sc_regs[i]);
6049f4f8 5284 }
1d8b512b 5285 __put_user(0, &sc->sc_regs[31]);
6049f4f8
RH		 5286
5287 for (i = 0; i < 31; ++i) {
1d8b512b 5288 __put_user(env->fir[i], &sc->sc_fpregs[i]);
6049f4f8 5289 }
1d8b512b
RV		 5290 __put_user(0, &sc->sc_fpregs[31]);
5291 __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr);
6049f4f8 5292
1d8b512b
RV		 5293 __put_user(0, &sc->sc_traparg_a0); /* FIXME */
5294 __put_user(0, &sc->sc_traparg_a1); /* FIXME */
5295 __put_user(0, &sc->sc_traparg_a2); /* FIXME */
6049f4f8
RH		 5296}
5297
016d2e1d 5298static void restore_sigcontext(CPUAlphaState *env,
05390248 5299 struct target_sigcontext *sc)
6049f4f8
RH		 5300{
5301 uint64_t fpcr;
016d2e1d 5302 int i;
6049f4f8 5303
1d8b512b 5304 __get_user(env->pc, &sc->sc_pc);
6049f4f8
RH		 5305
5306 for (i = 0; i < 31; ++i) {
1d8b512b 5307 __get_user(env->ir[i], &sc->sc_regs[i]);
6049f4f8
RH		 5308 }
5309 for (i = 0; i < 31; ++i) {
1d8b512b 5310 __get_user(env->fir[i], &sc->sc_fpregs[i]);
6049f4f8
RH		 5311 }
5312
1d8b512b 5313 __get_user(fpcr, &sc->sc_fpcr);
6049f4f8 5314 cpu_alpha_store_fpcr(env, fpcr);
6049f4f8
RH		 5315}
5316
5317static inline abi_ulong get_sigframe(struct target_sigaction *sa,
05390248
AF		 5318 CPUAlphaState *env,
5319 unsigned long framesize)
6049f4f8
RH		 5320{
5321 abi_ulong sp = env->ir[IR_SP];
5322
5323 /* This is the X/Open sanctioned signal stack switching. */
5324 if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
5325 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
5326 }
5327 return (sp - framesize) & -32;
5328}
5329
5330static void setup_frame(int sig, struct target_sigaction *ka,
05390248 5331 target_sigset_t *set, CPUAlphaState *env)
6049f4f8
RH		 5332{
5333 abi_ulong frame_addr, r26;
5334 struct target_sigframe *frame;
5335 int err = 0;
5336
5337 frame_addr = get_sigframe(ka, env, sizeof(*frame));
5338 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5339 goto give_sigsegv;
5340 }
5341
41ecc72b 5342 setup_sigcontext(&frame->sc, env, frame_addr, set);
6049f4f8
RH		 5343
5344 if (ka->sa_restorer) {
5345 r26 = ka->sa_restorer;
5346 } else {
1d8b512b
RV		 5347 __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
5348 __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn,
5349 &frame->retcode[1]);
5350 __put_user(INSN_CALLSYS, &frame->retcode[2]);
6049f4f8
RH		 5351 /* imb() */
5352 r26 = frame_addr;
5353 }
5354
5355 unlock_user_struct(frame, frame_addr, 1);
5356
5357 if (err) {
5358 give_sigsegv:
5359 if (sig == TARGET_SIGSEGV) {
5360 ka->_sa_handler = TARGET_SIG_DFL;
5361 }
5362 force_sig(TARGET_SIGSEGV);
5363 }
5364
5365 env->ir[IR_RA] = r26;
5366 env->ir[IR_PV] = env->pc = ka->_sa_handler;
5367 env->ir[IR_A0] = sig;
5368 env->ir[IR_A1] = 0;
5369 env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc);
5370 env->ir[IR_SP] = frame_addr;
5371}
5372
5373static void setup_rt_frame(int sig, struct target_sigaction *ka,
5374 target_siginfo_t *info,
05390248 5375 target_sigset_t *set, CPUAlphaState *env)
6049f4f8
RH		 5376{
5377 abi_ulong frame_addr, r26;
5378 struct target_rt_sigframe *frame;
5379 int i, err = 0;
5380
5381 frame_addr = get_sigframe(ka, env, sizeof(*frame));
5382 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5383 goto give_sigsegv;
5384 }
5385
b0fd8d18 5386 copy_siginfo_to_user(&frame->info, info);
6049f4f8 5387
1d8b512b
RV		 5388 __put_user(0, &frame->uc.tuc_flags);
5389 __put_user(0, &frame->uc.tuc_link);
5390 __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask);
5391 __put_user(target_sigaltstack_used.ss_sp,
5392 &frame->uc.tuc_stack.ss_sp);
5393 __put_user(sas_ss_flags(env->ir[IR_SP]),
5394 &frame->uc.tuc_stack.ss_flags);
5395 __put_user(target_sigaltstack_used.ss_size,
5396 &frame->uc.tuc_stack.ss_size);
41ecc72b 5397 setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set);
6049f4f8 5398 for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
1d8b512b 5399 __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
6049f4f8
RH		 5400 }
5401
5402 if (ka->sa_restorer) {
5403 r26 = ka->sa_restorer;
5404 } else {
1d8b512b
RV		 5405 __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
5406 __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn,
5407 &frame->retcode[1]);
5408 __put_user(INSN_CALLSYS, &frame->retcode[2]);
6049f4f8
RH		 5409 /* imb(); */
5410 r26 = frame_addr;
5411 }
5412
5413 if (err) {
5414 give_sigsegv:
5415 if (sig == TARGET_SIGSEGV) {
5416 ka->_sa_handler = TARGET_SIG_DFL;
5417 }
5418 force_sig(TARGET_SIGSEGV);
5419 }
5420
5421 env->ir[IR_RA] = r26;
5422 env->ir[IR_PV] = env->pc = ka->_sa_handler;
5423 env->ir[IR_A0] = sig;
5424 env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info);
5425 env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
5426 env->ir[IR_SP] = frame_addr;
5427}
5428
05390248 5429long do_sigreturn(CPUAlphaState *env)
6049f4f8
RH		 5430{
5431 struct target_sigcontext *sc;
5432 abi_ulong sc_addr = env->ir[IR_A0];
5433 target_sigset_t target_set;
5434 sigset_t set;
5435
5436 if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) {
5437 goto badframe;
5438 }
5439
5440 target_sigemptyset(&target_set);
f5f601af 5441 __get_user(target_set.sig[0], &sc->sc_mask);
6049f4f8
RH		 5442
5443 target_to_host_sigset_internal(&set, &target_set);
1c275925 5444 do_sigprocmask(SIG_SETMASK, &set, NULL);
6049f4f8 5445
016d2e1d 5446 restore_sigcontext(env, sc);
6049f4f8
RH		 5447 unlock_user_struct(sc, sc_addr, 0);
5448 return env->ir[IR_V0];
5449
5450 badframe:
6049f4f8
RH		 5451 force_sig(TARGET_SIGSEGV);
5452}
5453
05390248 5454long do_rt_sigreturn(CPUAlphaState *env)
6049f4f8
RH		 5455{
5456 abi_ulong frame_addr = env->ir[IR_A0];
5457 struct target_rt_sigframe *frame;
5458 sigset_t set;
5459
5460 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
5461 goto badframe;
5462 }
60e99246 5463 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
1c275925 5464 do_sigprocmask(SIG_SETMASK, &set, NULL);
6049f4f8 5465
016d2e1d 5466 restore_sigcontext(env, &frame->uc.tuc_mcontext);
6049f4f8 5467 if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
60e99246 5468 uc.tuc_stack),
6049f4f8
RH		 5469 0, env->ir[IR_SP]) == -EFAULT) {
5470 goto badframe;
5471 }
5472
5473 unlock_user_struct(frame, frame_addr, 0);
5474 return env->ir[IR_V0];
5475
5476
5477 badframe:
5478 unlock_user_struct(frame, frame_addr, 0);
5479 force_sig(TARGET_SIGSEGV);
5480}
5481
b346ff46
FB		 5482#else
5483
624f7979 5484static void setup_frame(int sig, struct target_sigaction *ka,
9349b4f9 5485 target_sigset_t *set, CPUArchState *env)
b346ff46
FB		 5486{
5487 fprintf(stderr, "setup_frame: not implemented\n");
5488}
5489
624f7979 5490static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 5491 target_siginfo_t *info,
9349b4f9 5492 target_sigset_t *set, CPUArchState *env)
b346ff46
FB		 5493{
5494 fprintf(stderr, "setup_rt_frame: not implemented\n");
5495}
5496
9349b4f9 5497long do_sigreturn(CPUArchState *env)
b346ff46
FB		 5498{
5499 fprintf(stderr, "do_sigreturn: not implemented\n");
f8b0aa25 5500 return -TARGET_ENOSYS;
b346ff46
FB		 5501}
5502
9349b4f9 5503long do_rt_sigreturn(CPUArchState *env)
b346ff46
FB		 5504{
5505 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 5506 return -TARGET_ENOSYS;
b346ff46
FB		 5507}
5508
66fb9763
FB		 5509#endif
5510
9349b4f9 5511void process_pending_signals(CPUArchState *cpu_env)
66fb9763 5512{
db6b81d4 5513 CPUState *cpu = ENV_GET_CPU(cpu_env);
66fb9763 5514 int sig;
992f48a0 5515 abi_ulong handler;
9de5e440 5516 sigset_t set, old_set;
c227f099 5517 target_sigset_t target_old_set;
624f7979
PB		 5518 struct emulated_sigtable *k;
5519 struct target_sigaction *sa;
66fb9763 5520 struct sigqueue *q;
0429a971 5521 TaskState *ts = cpu->opaque;
3b46e624 5522
624f7979 5523 if (!ts->signal_pending)
31e31b8a
FB		 5524 return;
5525
624f7979
PB		 5526 /* FIXME: This is not threadsafe. */
5527 k = ts->sigtab;
66fb9763
FB		 5528 for(sig = 1; sig <= TARGET_NSIG; sig++) {
5529 if (k->pending)
31e31b8a 5530 goto handle_signal;
66fb9763 5531 k++;
31e31b8a
FB		 5532 }
5533 /* if no signal is pending, just return */
624f7979 5534 ts->signal_pending = 0;
31e31b8a 5535 return;
66fb9763 5536
31e31b8a 5537 handle_signal:
66fb9763 5538#ifdef DEBUG_SIGNAL
bc8a22cc 5539 fprintf(stderr, "qemu: process signal %d\n", sig);
66fb9763
FB		 5540#endif
5541 /* dequeue signal */
5542 q = k->first;
5543 k->first = q->next;
5544 if (!k->first)
5545 k->pending = 0;
3b46e624 5546
db6b81d4 5547 sig = gdb_handlesig(cpu, sig);
1fddef4b 5548 if (!sig) {
ca587a8e
AJ		 5549 sa = NULL;
5550 handler = TARGET_SIG_IGN;
5551 } else {
5552 sa = &sigact_table[sig - 1];
5553 handler = sa->_sa_handler;
1fddef4b 5554 }
66fb9763 5555
a7ec0f98
PM		 5556 if (ts->sigsegv_blocked && sig == TARGET_SIGSEGV) {
5557 /* Guest has blocked SIGSEGV but we got one anyway. Assume this
5558 * is a forced SIGSEGV (ie one the kernel handles via force_sig_info
5559 * because it got a real MMU fault), and treat as if default handler.
5560 */
5561 handler = TARGET_SIG_DFL;
5562 }
5563
66fb9763 5564 if (handler == TARGET_SIG_DFL) {
ca587a8e
AJ		 5565 /* default handler : ignore some signal. The other are job control or fatal */
5566 if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
5567 kill(getpid(),SIGSTOP);
5568 } else if (sig != TARGET_SIGCHLD &&
5569 sig != TARGET_SIGURG &&
5570 sig != TARGET_SIGWINCH &&
5571 sig != TARGET_SIGCONT) {
66fb9763
FB		 5572 force_sig(sig);
5573 }
5574 } else if (handler == TARGET_SIG_IGN) {
5575 /* ignore sig */
5576 } else if (handler == TARGET_SIG_ERR) {
5577 force_sig(sig);
5578 } else {
9de5e440 5579 /* compute the blocked signals during the handler execution */
624f7979 5580 target_to_host_sigset(&set, &sa->sa_mask);
9de5e440
FB		 5581 /* SA_NODEFER indicates that the current signal should not be
5582 blocked during the handler */
624f7979 5583 if (!(sa->sa_flags & TARGET_SA_NODEFER))
9de5e440 5584 sigaddset(&set, target_to_host_signal(sig));
3b46e624 5585
9de5e440 5586 /* block signals in the handler using Linux */
1c275925 5587 do_sigprocmask(SIG_BLOCK, &set, &old_set);
9de5e440
FB		 5588 /* save the previous blocked signal state to restore it at the
5589 end of the signal execution (see do_sigreturn) */
9231944d 5590 host_to_target_sigset_internal(&target_old_set, &old_set);
9de5e440 5591
bc8a22cc 5592 /* if the CPU is in VM86 mode, we restore the 32 bit values */
84409ddb 5593#if defined(TARGET_I386) && !defined(TARGET_X86_64)
bc8a22cc
FB		 5594 {
5595 CPUX86State *env = cpu_env;
5596 if (env->eflags & VM_MASK)
5597 save_v86_state(env);
5598 }
5599#endif
9de5e440 5600 /* prepare the stack frame of the virtual CPU */
ff970904
RH		 5601#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
5602 /* These targets do not have traditional signals. */
5603 setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
5604#else
624f7979
PB		 5605 if (sa->sa_flags & TARGET_SA_SIGINFO)
5606 setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
66fb9763 5607 else
624f7979 5608 setup_frame(sig, sa, &target_old_set, cpu_env);
ff970904 5609#endif
624f7979
PB		 5610 if (sa->sa_flags & TARGET_SA_RESETHAND)
5611 sa->_sa_handler = TARGET_SIG_DFL;
31e31b8a 5612 }
66fb9763 5613 if (q != &k->info)
624f7979 5614 free_sigqueue(cpu_env, q);
66fb9763 5615}
Empty description
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