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alpha-linux-user: Fix a3 error return with v0 error bypass.
[qemu.git] / linux-user / signal.c
CommitLineData
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{
3ca05588 105 if (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{
3ca05588 112 if (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
9de5e440
FB		 200/* siginfo conversion */
201
c227f099 202static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo,
9de5e440 203 const siginfo_t *info)
66fb9763 204{
9de5e440
FB		 205 int sig;
206 sig = host_to_target_signal(info->si_signo);
207 tinfo->si_signo = sig;
208 tinfo->si_errno = 0;
afd7cd92 209 tinfo->si_code = info->si_code;
5fafdf24 210 if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
447db213 211 sig == SIGBUS || sig == SIGTRAP) {
9de5e440
FB		 212 /* should never come here, but who knows. The information for
213 the target is irrelevant */
214 tinfo->_sifields._sigfault._addr = 0;
7f7f7c84
TS		 215 } else if (sig == SIGIO) {
216 tinfo->_sifields._sigpoll._fd = info->si_fd;
9de5e440
FB		 217 } else if (sig >= TARGET_SIGRTMIN) {
218 tinfo->_sifields._rt._pid = info->si_pid;
219 tinfo->_sifields._rt._uid = info->si_uid;
220 /* XXX: potential problem if 64 bit */
5fafdf24 221 tinfo->_sifields._rt._sigval.sival_ptr =
459a4017 222 (abi_ulong)(unsigned long)info->si_value.sival_ptr;
9de5e440
FB		 223 }
224}
225
c227f099
AL		 226static void tswap_siginfo(target_siginfo_t *tinfo,
227 const target_siginfo_t *info)
9de5e440
FB		 228{
229 int sig;
230 sig = info->si_signo;
231 tinfo->si_signo = tswap32(sig);
66fb9763
FB		 232 tinfo->si_errno = tswap32(info->si_errno);
233 tinfo->si_code = tswap32(info->si_code);
5fafdf24 234 if (sig == SIGILL || sig == SIGFPE || sig == SIGSEGV ||
447db213 235 sig == SIGBUS || sig == SIGTRAP) {
5fafdf24 236 tinfo->_sifields._sigfault._addr =
cbb21eed 237 tswapal(info->_sifields._sigfault._addr);
7f7f7c84
TS		 238 } else if (sig == SIGIO) {
239 tinfo->_sifields._sigpoll._fd = tswap32(info->_sifields._sigpoll._fd);
9de5e440
FB		 240 } else if (sig >= TARGET_SIGRTMIN) {
241 tinfo->_sifields._rt._pid = tswap32(info->_sifields._rt._pid);
242 tinfo->_sifields._rt._uid = tswap32(info->_sifields._rt._uid);
5fafdf24 243 tinfo->_sifields._rt._sigval.sival_ptr =
cbb21eed 244 tswapal(info->_sifields._rt._sigval.sival_ptr);
9de5e440
FB		 245 }
246}
247
248
c227f099 249void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info)
9de5e440
FB		 250{
251 host_to_target_siginfo_noswap(tinfo, info);
252 tswap_siginfo(tinfo, tinfo);
66fb9763
FB		 253}
254
9de5e440 255/* XXX: we support only POSIX RT signals are used. */
aa1f17c1 256/* XXX: find a solution for 64 bit (additional malloced data is needed) */
c227f099 257void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo)
66fb9763
FB		 258{
259 info->si_signo = tswap32(tinfo->si_signo);
260 info->si_errno = tswap32(tinfo->si_errno);
261 info->si_code = tswap32(tinfo->si_code);
9de5e440
FB		 262 info->si_pid = tswap32(tinfo->_sifields._rt._pid);
263 info->si_uid = tswap32(tinfo->_sifields._rt._uid);
5fafdf24 264 info->si_value.sival_ptr =
cbb21eed 265 (void *)(long)tswapal(tinfo->_sifields._rt._sigval.sival_ptr);
66fb9763
FB		 266}
267
ca587a8e
AJ		 268static int fatal_signal (int sig)
269{
270 switch (sig) {
271 case TARGET_SIGCHLD:
272 case TARGET_SIGURG:
273 case TARGET_SIGWINCH:
274 /* Ignored by default. */
275 return 0;
276 case TARGET_SIGCONT:
277 case TARGET_SIGSTOP:
278 case TARGET_SIGTSTP:
279 case TARGET_SIGTTIN:
280 case TARGET_SIGTTOU:
281 /* Job control signals. */
282 return 0;
283 default:
284 return 1;
285 }
286}
287
edf8e2af
MW		 288/* returns 1 if given signal should dump core if not handled */
289static int core_dump_signal(int sig)
290{
291 switch (sig) {
292 case TARGET_SIGABRT:
293 case TARGET_SIGFPE:
294 case TARGET_SIGILL:
295 case TARGET_SIGQUIT:
296 case TARGET_SIGSEGV:
297 case TARGET_SIGTRAP:
298 case TARGET_SIGBUS:
299 return (1);
300 default:
301 return (0);
302 }
303}
304
31e31b8a
FB		 305void signal_init(void)
306{
307 struct sigaction act;
624f7979 308 struct sigaction oact;
9e5f5284 309 int i, j;
624f7979 310 int host_sig;
31e31b8a 311
9e5f5284 312 /* generate signal conversion tables */
3ca05588 313 for(i = 1; i < _NSIG; i++) {
9e5f5284
FB		 314 if (host_to_target_signal_table[i] == 0)
315 host_to_target_signal_table[i] = i;
316 }
3ca05588 317 for(i = 1; i < _NSIG; i++) {
9e5f5284
FB		 318 j = host_to_target_signal_table[i];
319 target_to_host_signal_table[j] = i;
320 }
3b46e624 321
9de5e440
FB		 322 /* set all host signal handlers. ALL signals are blocked during
323 the handlers to serialize them. */
624f7979
PB		 324 memset(sigact_table, 0, sizeof(sigact_table));
325
9de5e440 326 sigfillset(&act.sa_mask);
31e31b8a
FB		 327 act.sa_flags = SA_SIGINFO;
328 act.sa_sigaction = host_signal_handler;
624f7979
PB		 329 for(i = 1; i <= TARGET_NSIG; i++) {
330 host_sig = target_to_host_signal(i);
331 sigaction(host_sig, NULL, &oact);
332 if (oact.sa_sigaction == (void *)SIG_IGN) {
333 sigact_table[i - 1]._sa_handler = TARGET_SIG_IGN;
334 } else if (oact.sa_sigaction == (void *)SIG_DFL) {
335 sigact_table[i - 1]._sa_handler = TARGET_SIG_DFL;
336 }
337 /* If there's already a handler installed then something has
338 gone horribly wrong, so don't even try to handle that case. */
ca587a8e
AJ		 339 /* Install some handlers for our own use. We need at least
340 SIGSEGV and SIGBUS, to detect exceptions. We can not just
341 trap all signals because it affects syscall interrupt
342 behavior. But do trap all default-fatal signals. */
343 if (fatal_signal (i))
624f7979 344 sigaction(host_sig, &act, NULL);
31e31b8a 345 }
66fb9763
FB		 346}
347
348/* signal queue handling */
349
9349b4f9 350static inline struct sigqueue *alloc_sigqueue(CPUArchState *env)
66fb9763 351{
624f7979
PB		 352 TaskState *ts = env->opaque;
353 struct sigqueue *q = ts->first_free;
66fb9763
FB		 354 if (!q)
355 return NULL;
624f7979 356 ts->first_free = q->next;
66fb9763 357 return q;
31e31b8a
FB		 358}
359
9349b4f9 360static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q)
66fb9763 361{
624f7979
PB		 362 TaskState *ts = env->opaque;
363 q->next = ts->first_free;
364 ts->first_free = q;
66fb9763
FB		 365}
366
9de5e440 367/* abort execution with signal */
66393fb9 368static void QEMU_NORETURN force_sig(int target_sig)
66fb9763 369{
edf8e2af
MW		 370 TaskState *ts = (TaskState *)thread_env->opaque;
371 int host_sig, core_dumped = 0;
603e4fd7 372 struct sigaction act;
66393fb9
RV		 373 host_sig = target_to_host_signal(target_sig);
374 gdb_signalled(thread_env, target_sig);
603e4fd7 375
edf8e2af 376 /* dump core if supported by target binary format */
66393fb9 377 if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) {
edf8e2af
MW		 378 stop_all_tasks();
379 core_dumped =
66393fb9 380 ((*ts->bprm->core_dump)(target_sig, thread_env) == 0);
edf8e2af
MW		 381 }
382 if (core_dumped) {
383 /* we already dumped the core of target process, we don't want
384 * a coredump of qemu itself */
385 struct rlimit nodump;
386 getrlimit(RLIMIT_CORE, &nodump);
387 nodump.rlim_cur=0;
388 setrlimit(RLIMIT_CORE, &nodump);
389 (void) fprintf(stderr, "qemu: uncaught target signal %d (%s) - %s\n",
66393fb9 390 target_sig, strsignal(host_sig), "core dumped" );
edf8e2af
MW		 391 }
392
0c58751c 393 /* The proper exit code for dying from an uncaught signal is
603e4fd7
AJ		 394 * -<signal>. The kernel doesn't allow exit() or _exit() to pass
395 * a negative value. To get the proper exit code we need to
396 * actually die from an uncaught signal. Here the default signal
397 * handler is installed, we send ourself a signal and we wait for
398 * it to arrive. */
399 sigfillset(&act.sa_mask);
400 act.sa_handler = SIG_DFL;
401 sigaction(host_sig, &act, NULL);
402
403 /* For some reason raise(host_sig) doesn't send the signal when
404 * statically linked on x86-64. */
405 kill(getpid(), host_sig);
406
407 /* Make sure the signal isn't masked (just reuse the mask inside
408 of act) */
409 sigdelset(&act.sa_mask, host_sig);
410 sigsuspend(&act.sa_mask);
411
412 /* unreachable */
a6c6f76c 413 abort();
66fb9763
FB		 414}
415
9de5e440
FB		 416/* queue a signal so that it will be send to the virtual CPU as soon
417 as possible */
9349b4f9 418int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info)
31e31b8a 419{
624f7979
PB		 420 TaskState *ts = env->opaque;
421 struct emulated_sigtable *k;
9de5e440 422 struct sigqueue *q, **pq;
992f48a0 423 abi_ulong handler;
ca587a8e 424 int queue;
66fb9763 425
9de5e440 426#if defined(DEBUG_SIGNAL)
5fafdf24 427 fprintf(stderr, "queue_signal: sig=%d\n",
9de5e440 428 sig);
66fb9763 429#endif
624f7979 430 k = &ts->sigtab[sig - 1];
ca587a8e 431 queue = gdb_queuesig ();
624f7979 432 handler = sigact_table[sig - 1]._sa_handler;
ca587a8e 433 if (!queue && handler == TARGET_SIG_DFL) {
60b19691
TS		 434 if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
435 kill(getpid(),SIGSTOP);
436 return 0;
437 } else
66fb9763 438 /* default handler : ignore some signal. The other are fatal */
5fafdf24
TS		 439 if (sig != TARGET_SIGCHLD &&
440 sig != TARGET_SIGURG &&
60b19691
TS		 441 sig != TARGET_SIGWINCH &&
442 sig != TARGET_SIGCONT) {
66fb9763 443 force_sig(sig);
9de5e440
FB		 444 } else {
445 return 0; /* indicate ignored */
66fb9763 446 }
ca587a8e 447 } else if (!queue && handler == TARGET_SIG_IGN) {
66fb9763 448 /* ignore signal */
9de5e440 449 return 0;
ca587a8e 450 } else if (!queue && handler == TARGET_SIG_ERR) {
66fb9763
FB		 451 force_sig(sig);
452 } else {
9de5e440
FB		 453 pq = &k->first;
454 if (sig < TARGET_SIGRTMIN) {
455 /* if non real time signal, we queue exactly one signal */
456 if (!k->pending)
457 q = &k->info;
458 else
459 return 0;
460 } else {
461 if (!k->pending) {
462 /* first signal */
463 q = &k->info;
464 } else {
624f7979 465 q = alloc_sigqueue(env);
9de5e440
FB		 466 if (!q)
467 return -EAGAIN;
468 while (*pq != NULL)
469 pq = &(*pq)->next;
470 }
471 }
472 *pq = q;
473 q->info = *info;
474 q->next = NULL;
475 k->pending = 1;
476 /* signal that a new signal is pending */
624f7979 477 ts->signal_pending = 1;
9de5e440
FB		 478 return 1; /* indicates that the signal was queued */
479 }
480}
481
5fafdf24 482static void host_signal_handler(int host_signum, siginfo_t *info,
9de5e440
FB		 483 void *puc)
484{
485 int sig;
c227f099 486 target_siginfo_t tinfo;
9de5e440
FB		 487
488 /* the CPU emulator uses some host signals to detect exceptions,
eaa449b9 489 we forward to it some signals */
ca587a8e 490 if ((host_signum == SIGSEGV || host_signum == SIGBUS)
eaa449b9 491 && info->si_code > 0) {
b346ff46 492 if (cpu_signal_handler(host_signum, info, puc))
9de5e440
FB		 493 return;
494 }
495
496 /* get target signal number */
497 sig = host_to_target_signal(host_signum);
498 if (sig < 1 || sig > TARGET_NSIG)
499 return;
500#if defined(DEBUG_SIGNAL)
bc8a22cc 501 fprintf(stderr, "qemu: got signal %d\n", sig);
9de5e440
FB		 502#endif
503 host_to_target_siginfo_noswap(&tinfo, info);
d5975363 504 if (queue_signal(thread_env, sig, &tinfo) == 1) {
9de5e440 505 /* interrupt the virtual CPU as soon as possible */
3098dba0 506 cpu_exit(thread_env);
66fb9763
FB		 507 }
508}
509
0da46a6e 510/* do_sigaltstack() returns target values and errnos. */
579a97f7
FB		 511/* compare linux/kernel/signal.c:do_sigaltstack() */
512abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp)
a04e134a
TS		 513{
514 int ret;
515 struct target_sigaltstack oss;
516
517 /* XXX: test errors */
579a97f7 518 if(uoss_addr)
a04e134a
TS		 519 {
520 __put_user(target_sigaltstack_used.ss_sp, &oss.ss_sp);
521 __put_user(target_sigaltstack_used.ss_size, &oss.ss_size);
522 __put_user(sas_ss_flags(sp), &oss.ss_flags);
523 }
524
579a97f7 525 if(uss_addr)
a04e134a 526 {
579a97f7
FB		 527 struct target_sigaltstack *uss;
528 struct target_sigaltstack ss;
a04e134a 529
0da46a6e 530 ret = -TARGET_EFAULT;
579a97f7 531 if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1)
a04e134a
TS		 532 || __get_user(ss.ss_sp, &uss->ss_sp)
533 || __get_user(ss.ss_size, &uss->ss_size)
534 || __get_user(ss.ss_flags, &uss->ss_flags))
535 goto out;
579a97f7 536 unlock_user_struct(uss, uss_addr, 0);
a04e134a 537
0da46a6e 538 ret = -TARGET_EPERM;
a04e134a
TS		 539 if (on_sig_stack(sp))
540 goto out;
541
0da46a6e 542 ret = -TARGET_EINVAL;
a04e134a
TS		 543 if (ss.ss_flags != TARGET_SS_DISABLE
544 && ss.ss_flags != TARGET_SS_ONSTACK
545 && ss.ss_flags != 0)
546 goto out;
547
548 if (ss.ss_flags == TARGET_SS_DISABLE) {
549 ss.ss_size = 0;
550 ss.ss_sp = 0;
551 } else {
0da46a6e 552 ret = -TARGET_ENOMEM;
a04e134a
TS		 553 if (ss.ss_size < MINSIGSTKSZ)
554 goto out;
555 }
556
557 target_sigaltstack_used.ss_sp = ss.ss_sp;
558 target_sigaltstack_used.ss_size = ss.ss_size;
559 }
560
579a97f7 561 if (uoss_addr) {
0da46a6e 562 ret = -TARGET_EFAULT;
579a97f7 563 if (copy_to_user(uoss_addr, &oss, sizeof(oss)))
a04e134a 564 goto out;
a04e134a
TS		 565 }
566
567 ret = 0;
568out:
569 return ret;
570}
571
0da46a6e 572/* do_sigaction() return host values and errnos */
66fb9763
FB		 573int do_sigaction(int sig, const struct target_sigaction *act,
574 struct target_sigaction *oact)
575{
624f7979 576 struct target_sigaction *k;
773b93ee
FB		 577 struct sigaction act1;
578 int host_sig;
0da46a6e 579 int ret = 0;
66fb9763 580
2a913eb1 581 if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)
66fb9763
FB		 582 return -EINVAL;
583 k = &sigact_table[sig - 1];
773b93ee 584#if defined(DEBUG_SIGNAL)
0bf9e31a
BS		 585 fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n",
586 sig, act, oact);
66fb9763
FB		 587#endif
588 if (oact) {
cbb21eed 589 oact->_sa_handler = tswapal(k->_sa_handler);
f78b0f05
AF		 590#if defined(TARGET_MIPS) || defined (TARGET_ALPHA)
591 oact->sa_flags = bswap32(k->sa_flags);
592#else
cbb21eed 593 oact->sa_flags = tswapal(k->sa_flags);
f78b0f05 594#endif
388bb21a 595#if !defined(TARGET_MIPS)
cbb21eed 596 oact->sa_restorer = tswapal(k->sa_restorer);
388bb21a 597#endif
624f7979 598 oact->sa_mask = k->sa_mask;
66fb9763
FB		 599 }
600 if (act) {
624f7979 601 /* FIXME: This is not threadsafe. */
cbb21eed 602 k->_sa_handler = tswapal(act->_sa_handler);
f78b0f05
AF		 603#if defined(TARGET_MIPS) || defined (TARGET_ALPHA)
604 k->sa_flags = bswap32(act->sa_flags);
605#else
cbb21eed 606 k->sa_flags = tswapal(act->sa_flags);
f78b0f05 607#endif
388bb21a 608#if !defined(TARGET_MIPS)
cbb21eed 609 k->sa_restorer = tswapal(act->sa_restorer);
388bb21a 610#endif
624f7979 611 k->sa_mask = act->sa_mask;
773b93ee
FB		 612
613 /* we update the host linux signal state */
614 host_sig = target_to_host_signal(sig);
615 if (host_sig != SIGSEGV && host_sig != SIGBUS) {
616 sigfillset(&act1.sa_mask);
617 act1.sa_flags = SA_SIGINFO;
624f7979 618 if (k->sa_flags & TARGET_SA_RESTART)
773b93ee
FB		 619 act1.sa_flags |= SA_RESTART;
620 /* NOTE: it is important to update the host kernel signal
621 ignore state to avoid getting unexpected interrupted
622 syscalls */
624f7979 623 if (k->_sa_handler == TARGET_SIG_IGN) {
773b93ee 624 act1.sa_sigaction = (void *)SIG_IGN;
624f7979 625 } else if (k->_sa_handler == TARGET_SIG_DFL) {
ca587a8e
AJ		 626 if (fatal_signal (sig))
627 act1.sa_sigaction = host_signal_handler;
628 else
629 act1.sa_sigaction = (void *)SIG_DFL;
773b93ee
FB		 630 } else {
631 act1.sa_sigaction = host_signal_handler;
632 }
0da46a6e 633 ret = sigaction(host_sig, &act1, NULL);
773b93ee 634 }
66fb9763 635 }
0da46a6e 636 return ret;
66fb9763
FB		 637}
638
c227f099
AL		 639static inline int copy_siginfo_to_user(target_siginfo_t *tinfo,
640 const target_siginfo_t *info)
43fff238
FB		 641{
642 tswap_siginfo(tinfo, info);
643 return 0;
644}
645
c3b5bc8a
TS		 646static inline int current_exec_domain_sig(int sig)
647{
648 return /* current->exec_domain && current->exec_domain->signal_invmap
649 && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig;
650}
651
459a4017 652#if defined(TARGET_I386) && TARGET_ABI_BITS == 32
66fb9763
FB		 653
654/* from the Linux kernel */
655
656struct target_fpreg {
657 uint16_t significand[4];
658 uint16_t exponent;
659};
660
661struct target_fpxreg {
662 uint16_t significand[4];
663 uint16_t exponent;
664 uint16_t padding[3];
665};
666
667struct target_xmmreg {
992f48a0 668 abi_ulong element[4];
66fb9763
FB		 669};
670
671struct target_fpstate {
672 /* Regular FPU environment */
992f48a0
BS		 673 abi_ulong cw;
674 abi_ulong sw;
675 abi_ulong tag;
676 abi_ulong ipoff;
677 abi_ulong cssel;
678 abi_ulong dataoff;
679 abi_ulong datasel;
66fb9763
FB		 680 struct target_fpreg _st[8];
681 uint16_t status;
682 uint16_t magic; /* 0xffff = regular FPU data only */
683
684 /* FXSR FPU environment */
992f48a0
BS		 685 abi_ulong _fxsr_env[6]; /* FXSR FPU env is ignored */
686 abi_ulong mxcsr;
687 abi_ulong reserved;
66fb9763
FB		 688 struct target_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
689 struct target_xmmreg _xmm[8];
992f48a0 690 abi_ulong padding[56];
66fb9763
FB		 691};
692
693#define X86_FXSR_MAGIC 0x0000
694
695struct target_sigcontext {
696 uint16_t gs, __gsh;
697 uint16_t fs, __fsh;
698 uint16_t es, __esh;
699 uint16_t ds, __dsh;
992f48a0
BS		 700 abi_ulong edi;
701 abi_ulong esi;
702 abi_ulong ebp;
703 abi_ulong esp;
704 abi_ulong ebx;
705 abi_ulong edx;
706 abi_ulong ecx;
707 abi_ulong eax;
708 abi_ulong trapno;
709 abi_ulong err;
710 abi_ulong eip;
66fb9763 711 uint16_t cs, __csh;
992f48a0
BS		 712 abi_ulong eflags;
713 abi_ulong esp_at_signal;
66fb9763 714 uint16_t ss, __ssh;
992f48a0
BS		 715 abi_ulong fpstate; /* pointer */
716 abi_ulong oldmask;
717 abi_ulong cr2;
66fb9763
FB		 718};
719
66fb9763 720struct target_ucontext {
992f48a0
BS		 721 abi_ulong tuc_flags;
722 abi_ulong tuc_link;
c227f099 723 target_stack_t tuc_stack;
b8076a74 724 struct target_sigcontext tuc_mcontext;
c227f099 725 target_sigset_t tuc_sigmask; /* mask last for extensibility */
66fb9763
FB		 726};
727
728struct sigframe
729{
992f48a0 730 abi_ulong pretcode;
66fb9763
FB		 731 int sig;
732 struct target_sigcontext sc;
733 struct target_fpstate fpstate;
992f48a0 734 abi_ulong extramask[TARGET_NSIG_WORDS-1];
66fb9763
FB		 735 char retcode[8];
736};
737
738struct rt_sigframe
739{
992f48a0 740 abi_ulong pretcode;
66fb9763 741 int sig;
992f48a0
BS		 742 abi_ulong pinfo;
743 abi_ulong puc;
66fb9763
FB		 744 struct target_siginfo info;
745 struct target_ucontext uc;
746 struct target_fpstate fpstate;
747 char retcode[8];
748};
749
750/*
751 * Set up a signal frame.
752 */
753
66fb9763
FB		 754/* XXX: save x87 state */
755static int
756setup_sigcontext(struct target_sigcontext *sc, struct target_fpstate *fpstate,
28be6234 757 CPUX86State *env, abi_ulong mask, abi_ulong fpstate_addr)
66fb9763
FB		 758{
759 int err = 0;
775b58d8 760 uint16_t magic;
66fb9763 761
579a97f7 762 /* already locked in setup_frame() */
a52c757c
FB		 763 err |= __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs);
764 err |= __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs);
765 err |= __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es);
766 err |= __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds);
66fb9763
FB		 767 err |= __put_user(env->regs[R_EDI], &sc->edi);
768 err |= __put_user(env->regs[R_ESI], &sc->esi);
769 err |= __put_user(env->regs[R_EBP], &sc->ebp);
770 err |= __put_user(env->regs[R_ESP], &sc->esp);
771 err |= __put_user(env->regs[R_EBX], &sc->ebx);
772 err |= __put_user(env->regs[R_EDX], &sc->edx);
773 err |= __put_user(env->regs[R_ECX], &sc->ecx);
774 err |= __put_user(env->regs[R_EAX], &sc->eax);
66099dd9
FB		 775 err |= __put_user(env->exception_index, &sc->trapno);
776 err |= __put_user(env->error_code, &sc->err);
66fb9763 777 err |= __put_user(env->eip, &sc->eip);
a52c757c 778 err |= __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs);
66fb9763
FB		 779 err |= __put_user(env->eflags, &sc->eflags);
780 err |= __put_user(env->regs[R_ESP], &sc->esp_at_signal);
a52c757c 781 err |= __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss);
ed2dcdf6 782
28be6234 783 cpu_x86_fsave(env, fpstate_addr, 1);
ed2dcdf6 784 fpstate->status = fpstate->sw;
775b58d8
FB		 785 magic = 0xffff;
786 err |= __put_user(magic, &fpstate->magic);
28be6234 787 err |= __put_user(fpstate_addr, &sc->fpstate);
ed2dcdf6 788
66fb9763
FB		 789 /* non-iBCS2 extensions.. */
790 err |= __put_user(mask, &sc->oldmask);
a52c757c 791 err |= __put_user(env->cr[2], &sc->cr2);
66fb9763 792 return err;
31e31b8a
FB		 793}
794
66fb9763
FB		 795/*
796 * Determine which stack to use..
797 */
31e31b8a 798
579a97f7 799static inline abi_ulong
624f7979 800get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t frame_size)
31e31b8a 801{
66fb9763
FB		 802 unsigned long esp;
803
804 /* Default to using normal stack */
805 esp = env->regs[R_ESP];
66fb9763 806 /* This is the X/Open sanctioned signal stack switching. */
624f7979 807 if (ka->sa_flags & TARGET_SA_ONSTACK) {
a04e134a
TS		 808 if (sas_ss_flags(esp) == 0)
809 esp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
810 }
66fb9763
FB		 811
812 /* This is the legacy signal stack switching. */
5fafdf24 813 else
a52c757c 814 if ((env->segs[R_SS].selector & 0xffff) != __USER_DS &&
624f7979
PB		 815 !(ka->sa_flags & TARGET_SA_RESTORER) &&
816 ka->sa_restorer) {
817 esp = (unsigned long) ka->sa_restorer;
a52c757c 818 }
579a97f7 819 return (esp - frame_size) & -8ul;
66fb9763
FB		 820}
821
579a97f7 822/* compare linux/arch/i386/kernel/signal.c:setup_frame() */
624f7979 823static void setup_frame(int sig, struct target_sigaction *ka,
c227f099 824 target_sigset_t *set, CPUX86State *env)
66fb9763 825{
579a97f7 826 abi_ulong frame_addr;
66fb9763 827 struct sigframe *frame;
9231944d 828 int i, err = 0;
66fb9763 829
579a97f7 830 frame_addr = get_sigframe(ka, env, sizeof(*frame));
66fb9763 831
579a97f7 832 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
66fb9763 833 goto give_sigsegv;
579a97f7 834
c3b5bc8a 835 err |= __put_user(current_exec_domain_sig(sig),
66fb9763
FB		 836 &frame->sig);
837 if (err)
838 goto give_sigsegv;
839
28be6234
FB		 840 setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
841 frame_addr + offsetof(struct sigframe, fpstate));
66fb9763
FB		 842 if (err)
843 goto give_sigsegv;
844
9231944d
FB		 845 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
846 if (__put_user(set->sig[i], &frame->extramask[i - 1]))
847 goto give_sigsegv;
848 }
66fb9763
FB		 849
850 /* Set up to return from userspace. If provided, use a stub
851 already in userspace. */
624f7979
PB		 852 if (ka->sa_flags & TARGET_SA_RESTORER) {
853 err |= __put_user(ka->sa_restorer, &frame->pretcode);
66fb9763 854 } else {
775b58d8 855 uint16_t val16;
28be6234
FB		 856 abi_ulong retcode_addr;
857 retcode_addr = frame_addr + offsetof(struct sigframe, retcode);
858 err |= __put_user(retcode_addr, &frame->pretcode);
66fb9763 859 /* This is popl %eax ; movl $,%eax ; int $0x80 */
775b58d8
FB		 860 val16 = 0xb858;
861 err |= __put_user(val16, (uint16_t *)(frame->retcode+0));
66fb9763 862 err |= __put_user(TARGET_NR_sigreturn, (int *)(frame->retcode+2));
775b58d8
FB		 863 val16 = 0x80cd;
864 err |= __put_user(val16, (uint16_t *)(frame->retcode+6));
66fb9763
FB		 865 }
866
867 if (err)
868 goto give_sigsegv;
869
870 /* Set up registers for signal handler */
28be6234 871 env->regs[R_ESP] = frame_addr;
624f7979 872 env->eip = ka->_sa_handler;
66fb9763
FB		 873
874 cpu_x86_load_seg(env, R_DS, __USER_DS);
875 cpu_x86_load_seg(env, R_ES, __USER_DS);
876 cpu_x86_load_seg(env, R_SS, __USER_DS);
877 cpu_x86_load_seg(env, R_CS, __USER_CS);
878 env->eflags &= ~TF_MASK;
879
579a97f7
FB		 880 unlock_user_struct(frame, frame_addr, 1);
881
66fb9763
FB		 882 return;
883
884give_sigsegv:
579a97f7 885 unlock_user_struct(frame, frame_addr, 1);
66fb9763 886 if (sig == TARGET_SIGSEGV)
624f7979 887 ka->_sa_handler = TARGET_SIG_DFL;
66fb9763
FB		 888 force_sig(TARGET_SIGSEGV /* , current */);
889}
890
579a97f7 891/* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
624f7979 892static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099
AL		 893 target_siginfo_t *info,
894 target_sigset_t *set, CPUX86State *env)
66fb9763 895{
28be6234 896 abi_ulong frame_addr, addr;
66fb9763 897 struct rt_sigframe *frame;
9231944d 898 int i, err = 0;
66fb9763 899
579a97f7 900 frame_addr = get_sigframe(ka, env, sizeof(*frame));
66fb9763 901
579a97f7 902 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
66fb9763 903 goto give_sigsegv;
66fb9763 904
c3b5bc8a 905 err |= __put_user(current_exec_domain_sig(sig),
66fb9763 906 &frame->sig);
28be6234
FB		 907 addr = frame_addr + offsetof(struct rt_sigframe, info);
908 err |= __put_user(addr, &frame->pinfo);
909 addr = frame_addr + offsetof(struct rt_sigframe, uc);
910 err |= __put_user(addr, &frame->puc);
66fb9763
FB		 911 err |= copy_siginfo_to_user(&frame->info, info);
912 if (err)
913 goto give_sigsegv;
31e31b8a 914
66fb9763 915 /* Create the ucontext. */
b8076a74
FB		 916 err |= __put_user(0, &frame->uc.tuc_flags);
917 err |= __put_user(0, &frame->uc.tuc_link);
a04e134a 918 err |= __put_user(target_sigaltstack_used.ss_sp,
b8076a74 919 &frame->uc.tuc_stack.ss_sp);
a04e134a 920 err |= __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
b8076a74 921 &frame->uc.tuc_stack.ss_flags);
a04e134a 922 err |= __put_user(target_sigaltstack_used.ss_size,
b8076a74
FB		 923 &frame->uc.tuc_stack.ss_size);
924 err |= setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate,
28be6234
FB		 925 env, set->sig[0],
926 frame_addr + offsetof(struct rt_sigframe, fpstate));
9231944d 927 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
b8076a74 928 if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
9231944d
FB		 929 goto give_sigsegv;
930 }
31e31b8a 931
66fb9763
FB		 932 /* Set up to return from userspace. If provided, use a stub
933 already in userspace. */
624f7979
PB		 934 if (ka->sa_flags & TARGET_SA_RESTORER) {
935 err |= __put_user(ka->sa_restorer, &frame->pretcode);
66fb9763 936 } else {
775b58d8 937 uint16_t val16;
28be6234
FB		 938 addr = frame_addr + offsetof(struct rt_sigframe, retcode);
939 err |= __put_user(addr, &frame->pretcode);
66fb9763 940 /* This is movl $,%eax ; int $0x80 */
775b58d8 941 err |= __put_user(0xb8, (char *)(frame->retcode+0));
66fb9763 942 err |= __put_user(TARGET_NR_rt_sigreturn, (int *)(frame->retcode+1));
775b58d8
FB		 943 val16 = 0x80cd;
944 err |= __put_user(val16, (uint16_t *)(frame->retcode+5));
66fb9763
FB		 945 }
946
947 if (err)
948 goto give_sigsegv;
949
950 /* Set up registers for signal handler */
28be6234 951 env->regs[R_ESP] = frame_addr;
624f7979 952 env->eip = ka->_sa_handler;
66fb9763
FB		 953
954 cpu_x86_load_seg(env, R_DS, __USER_DS);
955 cpu_x86_load_seg(env, R_ES, __USER_DS);
956 cpu_x86_load_seg(env, R_SS, __USER_DS);
957 cpu_x86_load_seg(env, R_CS, __USER_CS);
958 env->eflags &= ~TF_MASK;
959
579a97f7
FB		 960 unlock_user_struct(frame, frame_addr, 1);
961
66fb9763
FB		 962 return;
963
964give_sigsegv:
579a97f7 965 unlock_user_struct(frame, frame_addr, 1);
66fb9763 966 if (sig == TARGET_SIGSEGV)
624f7979 967 ka->_sa_handler = TARGET_SIG_DFL;
66fb9763
FB		 968 force_sig(TARGET_SIGSEGV /* , current */);
969}
970
971static int
972restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc, int *peax)
973{
974 unsigned int err = 0;
28be6234
FB		 975 abi_ulong fpstate_addr;
976 unsigned int tmpflags;
977
978 cpu_x86_load_seg(env, R_GS, tswap16(sc->gs));
979 cpu_x86_load_seg(env, R_FS, tswap16(sc->fs));
980 cpu_x86_load_seg(env, R_ES, tswap16(sc->es));
981 cpu_x86_load_seg(env, R_DS, tswap16(sc->ds));
982
983 env->regs[R_EDI] = tswapl(sc->edi);
984 env->regs[R_ESI] = tswapl(sc->esi);
985 env->regs[R_EBP] = tswapl(sc->ebp);
986 env->regs[R_ESP] = tswapl(sc->esp);
987 env->regs[R_EBX] = tswapl(sc->ebx);
988 env->regs[R_EDX] = tswapl(sc->edx);
989 env->regs[R_ECX] = tswapl(sc->ecx);
990 env->eip = tswapl(sc->eip);
66fb9763 991
9a826d78
MM		 992 cpu_x86_load_seg(env, R_CS, lduw_p(&sc->cs) | 3);
993 cpu_x86_load_seg(env, R_SS, lduw_p(&sc->ss) | 3);
5fafdf24 994
28be6234
FB		 995 tmpflags = tswapl(sc->eflags);
996 env->eflags = (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5);
997 // regs->orig_eax = -1; /* disable syscall checks */
66fb9763 998
28be6234
FB		 999 fpstate_addr = tswapl(sc->fpstate);
1000 if (fpstate_addr != 0) {
1001 if (!access_ok(VERIFY_READ, fpstate_addr,
1002 sizeof(struct target_fpstate)))
1003 goto badframe;
1004 cpu_x86_frstor(env, fpstate_addr, 1);
66fb9763 1005 }
ed2dcdf6 1006
28be6234 1007 *peax = tswapl(sc->eax);
66fb9763 1008 return err;
66fb9763
FB		 1009badframe:
1010 return 1;
66fb9763
FB		 1011}
1012
1013long do_sigreturn(CPUX86State *env)
1014{
579a97f7
FB		 1015 struct sigframe *frame;
1016 abi_ulong frame_addr = env->regs[R_ESP] - 8;
c227f099 1017 target_sigset_t target_set;
66fb9763
FB		 1018 sigset_t set;
1019 int eax, i;
1020
447db213
FB		 1021#if defined(DEBUG_SIGNAL)
1022 fprintf(stderr, "do_sigreturn\n");
1023#endif
579a97f7
FB		 1024 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1025 goto badframe;
66fb9763 1026 /* set blocked signals */
9231944d
FB		 1027 if (__get_user(target_set.sig[0], &frame->sc.oldmask))
1028 goto badframe;
1029 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1030 if (__get_user(target_set.sig[i], &frame->extramask[i - 1]))
1031 goto badframe;
1032 }
66fb9763 1033
9231944d 1034 target_to_host_sigset_internal(&set, &target_set);
66fb9763 1035 sigprocmask(SIG_SETMASK, &set, NULL);
3b46e624 1036
66fb9763
FB		 1037 /* restore registers */
1038 if (restore_sigcontext(env, &frame->sc, &eax))
1039 goto badframe;
579a97f7 1040 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1041 return eax;
1042
1043badframe:
579a97f7 1044 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1045 force_sig(TARGET_SIGSEGV);
1046 return 0;
1047}
1048
1049long do_rt_sigreturn(CPUX86State *env)
1050{
28be6234
FB		 1051 abi_ulong frame_addr;
1052 struct rt_sigframe *frame;
66fb9763 1053 sigset_t set;
66fb9763
FB		 1054 int eax;
1055
28be6234
FB		 1056 frame_addr = env->regs[R_ESP] - 4;
1057 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1058 goto badframe;
b8076a74 1059 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
66fb9763 1060 sigprocmask(SIG_SETMASK, &set, NULL);
5fafdf24 1061
b8076a74 1062 if (restore_sigcontext(env, &frame->uc.tuc_mcontext, &eax))
66fb9763
FB		 1063 goto badframe;
1064
28be6234
FB		 1065 if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe, uc.tuc_stack), 0,
1066 get_sp_from_cpustate(env)) == -EFAULT)
66fb9763 1067 goto badframe;
a04e134a 1068
28be6234 1069 unlock_user_struct(frame, frame_addr, 0);
66fb9763
FB		 1070 return eax;
1071
1072badframe:
28be6234
FB		 1073 unlock_user_struct(frame, frame_addr, 0);
1074 force_sig(TARGET_SIGSEGV);
66fb9763
FB		 1075 return 0;
1076}
1077
43fff238
FB		 1078#elif defined(TARGET_ARM)
1079
1080struct target_sigcontext {
992f48a0
BS		 1081 abi_ulong trap_no;
1082 abi_ulong error_code;
1083 abi_ulong oldmask;
1084 abi_ulong arm_r0;
1085 abi_ulong arm_r1;
1086 abi_ulong arm_r2;
1087 abi_ulong arm_r3;
1088 abi_ulong arm_r4;
1089 abi_ulong arm_r5;
1090 abi_ulong arm_r6;
1091 abi_ulong arm_r7;
1092 abi_ulong arm_r8;
1093 abi_ulong arm_r9;
1094 abi_ulong arm_r10;
1095 abi_ulong arm_fp;
1096 abi_ulong arm_ip;
1097 abi_ulong arm_sp;
1098 abi_ulong arm_lr;
1099 abi_ulong arm_pc;
1100 abi_ulong arm_cpsr;
1101 abi_ulong fault_address;
43fff238
FB		 1102};
1103
a745ec6d
PB		 1104struct target_ucontext_v1 {
1105 abi_ulong tuc_flags;
1106 abi_ulong tuc_link;
c227f099 1107 target_stack_t tuc_stack;
a745ec6d 1108 struct target_sigcontext tuc_mcontext;
c227f099 1109 target_sigset_t tuc_sigmask; /* mask last for extensibility */
a745ec6d
PB		 1110};
1111
1112struct target_ucontext_v2 {
992f48a0
BS		 1113 abi_ulong tuc_flags;
1114 abi_ulong tuc_link;
c227f099 1115 target_stack_t tuc_stack;
b8076a74 1116 struct target_sigcontext tuc_mcontext;
c227f099 1117 target_sigset_t tuc_sigmask; /* mask last for extensibility */
5f0b7c88 1118 char __unused[128 - sizeof(target_sigset_t)];
a745ec6d 1119 abi_ulong tuc_regspace[128] __attribute__((__aligned__(8)));
43fff238
FB		 1120};
1121
0d871bdb
PM		 1122struct target_user_vfp {
1123 uint64_t fpregs[32];
1124 abi_ulong fpscr;
1125};
1126
1127struct target_user_vfp_exc {
1128 abi_ulong fpexc;
1129 abi_ulong fpinst;
1130 abi_ulong fpinst2;
1131};
1132
1133struct target_vfp_sigframe {
1134 abi_ulong magic;
1135 abi_ulong size;
1136 struct target_user_vfp ufp;
1137 struct target_user_vfp_exc ufp_exc;
1138} __attribute__((__aligned__(8)));
1139
08e11256
PM		 1140struct target_iwmmxt_sigframe {
1141 abi_ulong magic;
1142 abi_ulong size;
1143 uint64_t regs[16];
1144 /* Note that not all the coprocessor control registers are stored here */
1145 uint32_t wcssf;
1146 uint32_t wcasf;
1147 uint32_t wcgr0;
1148 uint32_t wcgr1;
1149 uint32_t wcgr2;
1150 uint32_t wcgr3;
1151} __attribute__((__aligned__(8)));
1152
0d871bdb 1153#define TARGET_VFP_MAGIC 0x56465001
08e11256 1154#define TARGET_IWMMXT_MAGIC 0x12ef842a
0d871bdb 1155
a8c33204 1156struct sigframe_v1
43fff238
FB		 1157{
1158 struct target_sigcontext sc;
992f48a0
BS		 1159 abi_ulong extramask[TARGET_NSIG_WORDS-1];
1160 abi_ulong retcode;
43fff238
FB		 1161};
1162
a8c33204
PB		 1163struct sigframe_v2
1164{
1165 struct target_ucontext_v2 uc;
1166 abi_ulong retcode;
1167};
1168
a745ec6d 1169struct rt_sigframe_v1
43fff238 1170{
f8b0aa25
FB		 1171 abi_ulong pinfo;
1172 abi_ulong puc;
43fff238 1173 struct target_siginfo info;
a745ec6d
PB		 1174 struct target_ucontext_v1 uc;
1175 abi_ulong retcode;
1176};
1177
1178struct rt_sigframe_v2
1179{
1180 struct target_siginfo info;
1181 struct target_ucontext_v2 uc;
992f48a0 1182 abi_ulong retcode;
43fff238
FB		 1183};
1184
1185#define TARGET_CONFIG_CPU_32 1
1186
1187/*
1188 * For ARM syscalls, we encode the syscall number into the instruction.
1189 */
1190#define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE))
1191#define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE))
1192
1193/*
1194 * For Thumb syscalls, we pass the syscall number via r7. We therefore
1195 * need two 16-bit instructions.
1196 */
1197#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn))
1198#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn))
1199
992f48a0 1200static const abi_ulong retcodes[4] = {
43fff238
FB		 1201 SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN,
1202 SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN
1203};
1204
1205
43fff238
FB		 1206#define __get_user_error(x,p,e) __get_user(x, p)
1207
05390248 1208static inline int valid_user_regs(CPUARMState *regs)
43fff238
FB		 1209{
1210 return 1;
1211}
1212
a8c33204 1213static void
43fff238 1214setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
05390248 1215 CPUARMState *env, abi_ulong mask)
43fff238 1216{
a8c33204
PB		 1217 __put_user(env->regs[0], &sc->arm_r0);
1218 __put_user(env->regs[1], &sc->arm_r1);
1219 __put_user(env->regs[2], &sc->arm_r2);
1220 __put_user(env->regs[3], &sc->arm_r3);
1221 __put_user(env->regs[4], &sc->arm_r4);
1222 __put_user(env->regs[5], &sc->arm_r5);
1223 __put_user(env->regs[6], &sc->arm_r6);
1224 __put_user(env->regs[7], &sc->arm_r7);
1225 __put_user(env->regs[8], &sc->arm_r8);
1226 __put_user(env->regs[9], &sc->arm_r9);
1227 __put_user(env->regs[10], &sc->arm_r10);
1228 __put_user(env->regs[11], &sc->arm_fp);
1229 __put_user(env->regs[12], &sc->arm_ip);
1230 __put_user(env->regs[13], &sc->arm_sp);
1231 __put_user(env->regs[14], &sc->arm_lr);
1232 __put_user(env->regs[15], &sc->arm_pc);
43fff238 1233#ifdef TARGET_CONFIG_CPU_32
a8c33204 1234 __put_user(cpsr_read(env), &sc->arm_cpsr);
43fff238
FB		 1235#endif
1236
a8c33204
PB		 1237 __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
1238 __put_user(/* current->thread.error_code */ 0, &sc->error_code);
1239 __put_user(/* current->thread.address */ 0, &sc->fault_address);
1240 __put_user(mask, &sc->oldmask);
43fff238
FB		 1241}
1242
579a97f7 1243static inline abi_ulong
05390248 1244get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
43fff238
FB		 1245{
1246 unsigned long sp = regs->regs[13];
1247
43fff238
FB		 1248 /*
1249 * This is the X/Open sanctioned signal stack switching.
1250 */
624f7979 1251 if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
a04e134a 1252 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
43fff238
FB		 1253 /*
1254 * ATPCS B01 mandates 8-byte alignment
1255 */
579a97f7 1256 return (sp - framesize) & ~7;
43fff238
FB		 1257}
1258
1259static int
05390248 1260setup_return(CPUARMState *env, struct target_sigaction *ka,
f8b0aa25 1261 abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
43fff238 1262{
624f7979 1263 abi_ulong handler = ka->_sa_handler;
992f48a0 1264 abi_ulong retcode;
75b680e5 1265 int thumb = handler & 1;
964413d9
PM		 1266 uint32_t cpsr = cpsr_read(env);
1267
1268 cpsr &= ~CPSR_IT;
1269 if (thumb) {
1270 cpsr |= CPSR_T;
1271 } else {
1272 cpsr &= ~CPSR_T;
1273 }
43fff238 1274
624f7979
PB		 1275 if (ka->sa_flags & TARGET_SA_RESTORER) {
1276 retcode = ka->sa_restorer;
43fff238
FB		 1277 } else {
1278 unsigned int idx = thumb;
1279
624f7979 1280 if (ka->sa_flags & TARGET_SA_SIGINFO)
43fff238
FB		 1281 idx += 2;
1282
1283 if (__put_user(retcodes[idx], rc))
1284 return 1;
ca8a277c 1285
f8b0aa25 1286 retcode = rc_addr + thumb;
43fff238
FB		 1287 }
1288
1289 env->regs[0] = usig;
f8b0aa25 1290 env->regs[13] = frame_addr;
43fff238
FB		 1291 env->regs[14] = retcode;
1292 env->regs[15] = handler & (thumb ? ~1 : ~3);
964413d9 1293 cpsr_write(env, cpsr, 0xffffffff);
43fff238
FB		 1294
1295 return 0;
1296}
1297
05390248 1298static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
0d871bdb
PM		 1299{
1300 int i;
1301 struct target_vfp_sigframe *vfpframe;
1302 vfpframe = (struct target_vfp_sigframe *)regspace;
1303 __put_user(TARGET_VFP_MAGIC, &vfpframe->magic);
1304 __put_user(sizeof(*vfpframe), &vfpframe->size);
1305 for (i = 0; i < 32; i++) {
005e1a0a 1306 __put_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]);
0d871bdb
PM		 1307 }
1308 __put_user(vfp_get_fpscr(env), &vfpframe->ufp.fpscr);
1309 __put_user(env->vfp.xregs[ARM_VFP_FPEXC], &vfpframe->ufp_exc.fpexc);
1310 __put_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
1311 __put_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
1312 return (abi_ulong*)(vfpframe+1);
1313}
1314
05390248
AF		 1315static abi_ulong *setup_sigframe_v2_iwmmxt(abi_ulong *regspace,
1316 CPUARMState *env)
08e11256
PM		 1317{
1318 int i;
1319 struct target_iwmmxt_sigframe *iwmmxtframe;
1320 iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
1321 __put_user(TARGET_IWMMXT_MAGIC, &iwmmxtframe->magic);
1322 __put_user(sizeof(*iwmmxtframe), &iwmmxtframe->size);
1323 for (i = 0; i < 16; i++) {
1324 __put_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
1325 }
1326 __put_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
1327 __put_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
1328 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
1329 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
1330 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
1331 __put_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
1332 return (abi_ulong*)(iwmmxtframe+1);
1333}
1334
a8c33204 1335static void setup_sigframe_v2(struct target_ucontext_v2 *uc,
05390248 1336 target_sigset_t *set, CPUARMState *env)
a8c33204
PB		 1337{
1338 struct target_sigaltstack stack;
1339 int i;
0d871bdb 1340 abi_ulong *regspace;
a8c33204
PB		 1341
1342 /* Clear all the bits of the ucontext we don't use. */
1343 memset(uc, 0, offsetof(struct target_ucontext_v2, tuc_mcontext));
1344
1345 memset(&stack, 0, sizeof(stack));
1346 __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
1347 __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
1348 __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
1349 memcpy(&uc->tuc_stack, &stack, sizeof(stack));
1350
1351 setup_sigcontext(&uc->tuc_mcontext, env, set->sig[0]);
0d871bdb
PM		 1352 /* Save coprocessor signal frame. */
1353 regspace = uc->tuc_regspace;
1354 if (arm_feature(env, ARM_FEATURE_VFP)) {
1355 regspace = setup_sigframe_v2_vfp(regspace, env);
1356 }
08e11256
PM		 1357 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1358 regspace = setup_sigframe_v2_iwmmxt(regspace, env);
1359 }
1360
0d871bdb
PM		 1361 /* Write terminating magic word */
1362 __put_user(0, regspace);
1363
a8c33204
PB		 1364 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
1365 __put_user(set->sig[i], &uc->tuc_sigmask.sig[i]);
1366 }
1367}
1368
579a97f7 1369/* compare linux/arch/arm/kernel/signal.c:setup_frame() */
624f7979 1370static void setup_frame_v1(int usig, struct target_sigaction *ka,
05390248 1371 target_sigset_t *set, CPUARMState *regs)
43fff238 1372{
a8c33204 1373 struct sigframe_v1 *frame;
579a97f7 1374 abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
a8c33204 1375 int i;
43fff238 1376
579a97f7
FB		 1377 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1378 return;
1379
a8c33204 1380 setup_sigcontext(&frame->sc, regs, set->sig[0]);
43fff238 1381
9231944d
FB		 1382 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1383 if (__put_user(set->sig[i], &frame->extramask[i - 1]))
579a97f7 1384 goto end;
43fff238
FB		 1385 }
1386
a8c33204
PB		 1387 setup_return(regs, ka, &frame->retcode, frame_addr, usig,
1388 frame_addr + offsetof(struct sigframe_v1, retcode));
579a97f7
FB		 1389
1390end:
1391 unlock_user_struct(frame, frame_addr, 1);
a8c33204
PB		 1392}
1393
624f7979 1394static void setup_frame_v2(int usig, struct target_sigaction *ka,
05390248 1395 target_sigset_t *set, CPUARMState *regs)
a8c33204
PB		 1396{
1397 struct sigframe_v2 *frame;
1398 abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
1399
1400 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1401 return;
1402
1403 setup_sigframe_v2(&frame->uc, set, regs);
1404
1405 setup_return(regs, ka, &frame->retcode, frame_addr, usig,
1406 frame_addr + offsetof(struct sigframe_v2, retcode));
1407
1408 unlock_user_struct(frame, frame_addr, 1);
1409}
1410
624f7979 1411static void setup_frame(int usig, struct target_sigaction *ka,
05390248 1412 target_sigset_t *set, CPUARMState *regs)
a8c33204
PB		 1413{
1414 if (get_osversion() >= 0x020612) {
1415 setup_frame_v2(usig, ka, set, regs);
1416 } else {
1417 setup_frame_v1(usig, ka, set, regs);
1418 }
43fff238
FB		 1419}
1420
579a97f7 1421/* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
624f7979 1422static void setup_rt_frame_v1(int usig, struct target_sigaction *ka,
c227f099 1423 target_siginfo_t *info,
05390248 1424 target_sigset_t *set, CPUARMState *env)
43fff238 1425{
a745ec6d 1426 struct rt_sigframe_v1 *frame;
579a97f7 1427 abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
a04e134a 1428 struct target_sigaltstack stack;
a8c33204 1429 int i;
f8b0aa25 1430 abi_ulong info_addr, uc_addr;
43fff238 1431
579a97f7 1432 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
edf779ff
FB		 1433 return /* 1 */;
1434
a745ec6d 1435 info_addr = frame_addr + offsetof(struct rt_sigframe_v1, info);
a8c33204 1436 __put_user(info_addr, &frame->pinfo);
a745ec6d 1437 uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
a8c33204
PB		 1438 __put_user(uc_addr, &frame->puc);
1439 copy_siginfo_to_user(&frame->info, info);
43fff238
FB		 1440
1441 /* Clear all the bits of the ucontext we don't use. */
a745ec6d 1442 memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
43fff238 1443
a04e134a
TS		 1444 memset(&stack, 0, sizeof(stack));
1445 __put_user(target_sigaltstack_used.ss_sp, &stack.ss_sp);
1446 __put_user(target_sigaltstack_used.ss_size, &stack.ss_size);
1447 __put_user(sas_ss_flags(get_sp_from_cpustate(env)), &stack.ss_flags);
775b58d8 1448 memcpy(&frame->uc.tuc_stack, &stack, sizeof(stack));
a04e134a 1449
a8c33204 1450 setup_sigcontext(&frame->uc.tuc_mcontext, env, set->sig[0]);
9231944d 1451 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
b8076a74 1452 if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
579a97f7 1453 goto end;
9231944d 1454 }
43fff238 1455
a8c33204
PB		 1456 setup_return(env, ka, &frame->retcode, frame_addr, usig,
1457 frame_addr + offsetof(struct rt_sigframe_v1, retcode));
a745ec6d 1458
a8c33204
PB		 1459 env->regs[1] = info_addr;
1460 env->regs[2] = uc_addr;
a745ec6d
PB		 1461
1462end:
1463 unlock_user_struct(frame, frame_addr, 1);
a745ec6d
PB		 1464}
1465
624f7979 1466static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
c227f099 1467 target_siginfo_t *info,
05390248 1468 target_sigset_t *set, CPUARMState *env)
a745ec6d
PB		 1469{
1470 struct rt_sigframe_v2 *frame;
1471 abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
a745ec6d
PB		 1472 abi_ulong info_addr, uc_addr;
1473
1474 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
1475 return /* 1 */;
1476
1477 info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
1478 uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
a8c33204 1479 copy_siginfo_to_user(&frame->info, info);
a745ec6d 1480
a8c33204 1481 setup_sigframe_v2(&frame->uc, set, env);
a745ec6d 1482
a8c33204
PB		 1483 setup_return(env, ka, &frame->retcode, frame_addr, usig,
1484 frame_addr + offsetof(struct rt_sigframe_v2, retcode));
a745ec6d 1485
a8c33204
PB		 1486 env->regs[1] = info_addr;
1487 env->regs[2] = uc_addr;
43fff238 1488
579a97f7 1489 unlock_user_struct(frame, frame_addr, 1);
43fff238
FB		 1490}
1491
624f7979 1492static void setup_rt_frame(int usig, struct target_sigaction *ka,
c227f099 1493 target_siginfo_t *info,
05390248 1494 target_sigset_t *set, CPUARMState *env)
a745ec6d
PB		 1495{
1496 if (get_osversion() >= 0x020612) {
1497 setup_rt_frame_v2(usig, ka, info, set, env);
1498 } else {
1499 setup_rt_frame_v1(usig, ka, info, set, env);
1500 }
1501}
1502
43fff238 1503static int
05390248 1504restore_sigcontext(CPUARMState *env, struct target_sigcontext *sc)
43fff238
FB		 1505{
1506 int err = 0;
b5ff1b31 1507 uint32_t cpsr;
43fff238
FB		 1508
1509 __get_user_error(env->regs[0], &sc->arm_r0, err);
1510 __get_user_error(env->regs[1], &sc->arm_r1, err);
1511 __get_user_error(env->regs[2], &sc->arm_r2, err);
1512 __get_user_error(env->regs[3], &sc->arm_r3, err);
1513 __get_user_error(env->regs[4], &sc->arm_r4, err);
1514 __get_user_error(env->regs[5], &sc->arm_r5, err);
1515 __get_user_error(env->regs[6], &sc->arm_r6, err);
1516 __get_user_error(env->regs[7], &sc->arm_r7, err);
1517 __get_user_error(env->regs[8], &sc->arm_r8, err);
1518 __get_user_error(env->regs[9], &sc->arm_r9, err);
1519 __get_user_error(env->regs[10], &sc->arm_r10, err);
1520 __get_user_error(env->regs[11], &sc->arm_fp, err);
1521 __get_user_error(env->regs[12], &sc->arm_ip, err);
1522 __get_user_error(env->regs[13], &sc->arm_sp, err);
1523 __get_user_error(env->regs[14], &sc->arm_lr, err);
1524 __get_user_error(env->regs[15], &sc->arm_pc, err);
1525#ifdef TARGET_CONFIG_CPU_32
b5ff1b31 1526 __get_user_error(cpsr, &sc->arm_cpsr, err);
75b680e5 1527 cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC);
43fff238
FB		 1528#endif
1529
1530 err |= !valid_user_regs(env);
1531
1532 return err;
1533}
1534
05390248 1535static long do_sigreturn_v1(CPUARMState *env)
43fff238 1536{
f8b0aa25 1537 abi_ulong frame_addr;
a8c33204 1538 struct sigframe_v1 *frame;
c227f099 1539 target_sigset_t set;
43fff238 1540 sigset_t host_set;
9231944d 1541 int i;
43fff238
FB		 1542
1543 /*
1544 * Since we stacked the signal on a 64-bit boundary,
1545 * then 'sp' should be word aligned here. If it's
1546 * not, then the user is trying to mess with us.
1547 */
1548 if (env->regs[13] & 7)
1549 goto badframe;
1550
f8b0aa25
FB		 1551 frame_addr = env->regs[13];
1552 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1553 goto badframe;
43fff238 1554
9231944d
FB		 1555 if (__get_user(set.sig[0], &frame->sc.oldmask))
1556 goto badframe;
1557 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
1558 if (__get_user(set.sig[i], &frame->extramask[i - 1]))
1559 goto badframe;
1560 }
43fff238 1561
9231944d 1562 target_to_host_sigset_internal(&host_set, &set);
43fff238
FB		 1563 sigprocmask(SIG_SETMASK, &host_set, NULL);
1564
1565 if (restore_sigcontext(env, &frame->sc))
1566 goto badframe;
1567
1568#if 0
1569 /* Send SIGTRAP if we're single-stepping */
1570 if (ptrace_cancel_bpt(current))
1571 send_sig(SIGTRAP, current, 1);
1572#endif
f8b0aa25
FB		 1573 unlock_user_struct(frame, frame_addr, 0);
1574 return env->regs[0];
43fff238
FB		 1575
1576badframe:
f8b0aa25 1577 unlock_user_struct(frame, frame_addr, 0);
66393fb9 1578 force_sig(TARGET_SIGSEGV /* , current */);
43fff238
FB		 1579 return 0;
1580}
1581
05390248 1582static abi_ulong *restore_sigframe_v2_vfp(CPUARMState *env, abi_ulong *regspace)
5f9099d9
PM		 1583{
1584 int i;
1585 abi_ulong magic, sz;
1586 uint32_t fpscr, fpexc;
1587 struct target_vfp_sigframe *vfpframe;
1588 vfpframe = (struct target_vfp_sigframe *)regspace;
1589
1590 __get_user(magic, &vfpframe->magic);
1591 __get_user(sz, &vfpframe->size);
1592 if (magic != TARGET_VFP_MAGIC || sz != sizeof(*vfpframe)) {
1593 return 0;
1594 }
1595 for (i = 0; i < 32; i++) {
005e1a0a 1596 __get_user(float64_val(env->vfp.regs[i]), &vfpframe->ufp.fpregs[i]);
5f9099d9
PM		 1597 }
1598 __get_user(fpscr, &vfpframe->ufp.fpscr);
1599 vfp_set_fpscr(env, fpscr);
1600 __get_user(fpexc, &vfpframe->ufp_exc.fpexc);
1601 /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid
1602 * and the exception flag is cleared
1603 */
1604 fpexc |= (1 << 30);
1605 fpexc &= ~((1 << 31) | (1 << 28));
1606 env->vfp.xregs[ARM_VFP_FPEXC] = fpexc;
1607 __get_user(env->vfp.xregs[ARM_VFP_FPINST], &vfpframe->ufp_exc.fpinst);
1608 __get_user(env->vfp.xregs[ARM_VFP_FPINST2], &vfpframe->ufp_exc.fpinst2);
1609 return (abi_ulong*)(vfpframe + 1);
1610}
1611
05390248
AF		 1612static abi_ulong *restore_sigframe_v2_iwmmxt(CPUARMState *env,
1613 abi_ulong *regspace)
a59d69da
PM		 1614{
1615 int i;
1616 abi_ulong magic, sz;
1617 struct target_iwmmxt_sigframe *iwmmxtframe;
1618 iwmmxtframe = (struct target_iwmmxt_sigframe *)regspace;
1619
1620 __get_user(magic, &iwmmxtframe->magic);
1621 __get_user(sz, &iwmmxtframe->size);
1622 if (magic != TARGET_IWMMXT_MAGIC || sz != sizeof(*iwmmxtframe)) {
1623 return 0;
1624 }
1625 for (i = 0; i < 16; i++) {
1626 __get_user(env->iwmmxt.regs[i], &iwmmxtframe->regs[i]);
1627 }
1628 __get_user(env->vfp.xregs[ARM_IWMMXT_wCSSF], &iwmmxtframe->wcssf);
1629 __get_user(env->vfp.xregs[ARM_IWMMXT_wCASF], &iwmmxtframe->wcssf);
1630 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR0], &iwmmxtframe->wcgr0);
1631 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR1], &iwmmxtframe->wcgr1);
1632 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR2], &iwmmxtframe->wcgr2);
1633 __get_user(env->vfp.xregs[ARM_IWMMXT_wCGR3], &iwmmxtframe->wcgr3);
1634 return (abi_ulong*)(iwmmxtframe + 1);
1635}
1636
05390248 1637static int do_sigframe_return_v2(CPUARMState *env, target_ulong frame_addr,
a8c33204
PB		 1638 struct target_ucontext_v2 *uc)
1639{
1640 sigset_t host_set;
5f9099d9 1641 abi_ulong *regspace;
a8c33204
PB		 1642
1643 target_to_host_sigset(&host_set, &uc->tuc_sigmask);
1644 sigprocmask(SIG_SETMASK, &host_set, NULL);
1645
1646 if (restore_sigcontext(env, &uc->tuc_mcontext))
1647 return 1;
1648
5f9099d9
PM		 1649 /* Restore coprocessor signal frame */
1650 regspace = uc->tuc_regspace;
1651 if (arm_feature(env, ARM_FEATURE_VFP)) {
1652 regspace = restore_sigframe_v2_vfp(env, regspace);
1653 if (!regspace) {
1654 return 1;
1655 }
1656 }
a59d69da
PM		 1657 if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
1658 regspace = restore_sigframe_v2_iwmmxt(env, regspace);
1659 if (!regspace) {
1660 return 1;
1661 }
1662 }
5f9099d9 1663
a8c33204
PB		 1664 if (do_sigaltstack(frame_addr + offsetof(struct target_ucontext_v2, tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
1665 return 1;
1666
1667#if 0
1668 /* Send SIGTRAP if we're single-stepping */
1669 if (ptrace_cancel_bpt(current))
1670 send_sig(SIGTRAP, current, 1);
1671#endif
1672
1673 return 0;
1674}
1675
05390248 1676static long do_sigreturn_v2(CPUARMState *env)
a8c33204
PB		 1677{
1678 abi_ulong frame_addr;
1679 struct sigframe_v2 *frame;
1680
1681 /*
1682 * Since we stacked the signal on a 64-bit boundary,
1683 * then 'sp' should be word aligned here. If it's
1684 * not, then the user is trying to mess with us.
1685 */
1686 if (env->regs[13] & 7)
1687 goto badframe;
1688
1689 frame_addr = env->regs[13];
1690 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1691 goto badframe;
1692
1693 if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
1694 goto badframe;
1695
1696 unlock_user_struct(frame, frame_addr, 0);
1697 return env->regs[0];
1698
1699badframe:
1700 unlock_user_struct(frame, frame_addr, 0);
66393fb9 1701 force_sig(TARGET_SIGSEGV /* , current */);
a8c33204
PB		 1702 return 0;
1703}
1704
05390248 1705long do_sigreturn(CPUARMState *env)
a8c33204
PB		 1706{
1707 if (get_osversion() >= 0x020612) {
1708 return do_sigreturn_v2(env);
1709 } else {
1710 return do_sigreturn_v1(env);
1711 }
1712}
1713
05390248 1714static long do_rt_sigreturn_v1(CPUARMState *env)
43fff238 1715{
f8b0aa25 1716 abi_ulong frame_addr;
a745ec6d
PB		 1717 struct rt_sigframe_v1 *frame;
1718 sigset_t host_set;
1719
1720 /*
1721 * Since we stacked the signal on a 64-bit boundary,
1722 * then 'sp' should be word aligned here. If it's
1723 * not, then the user is trying to mess with us.
1724 */
1725 if (env->regs[13] & 7)
1726 goto badframe;
1727
1728 frame_addr = env->regs[13];
1729 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1730 goto badframe;
1731
1732 target_to_host_sigset(&host_set, &frame->uc.tuc_sigmask);
1733 sigprocmask(SIG_SETMASK, &host_set, NULL);
1734
1735 if (restore_sigcontext(env, &frame->uc.tuc_mcontext))
1736 goto badframe;
1737
1738 if (do_sigaltstack(frame_addr + offsetof(struct rt_sigframe_v1, uc.tuc_stack), 0, get_sp_from_cpustate(env)) == -EFAULT)
1739 goto badframe;
1740
1741#if 0
1742 /* Send SIGTRAP if we're single-stepping */
1743 if (ptrace_cancel_bpt(current))
1744 send_sig(SIGTRAP, current, 1);
1745#endif
1746 unlock_user_struct(frame, frame_addr, 0);
1747 return env->regs[0];
1748
1749badframe:
1750 unlock_user_struct(frame, frame_addr, 0);
66393fb9 1751 force_sig(TARGET_SIGSEGV /* , current */);
a745ec6d
PB		 1752 return 0;
1753}
1754
05390248 1755static long do_rt_sigreturn_v2(CPUARMState *env)
a745ec6d
PB		 1756{
1757 abi_ulong frame_addr;
1758 struct rt_sigframe_v2 *frame;
43fff238
FB		 1759
1760 /*
1761 * Since we stacked the signal on a 64-bit boundary,
1762 * then 'sp' should be word aligned here. If it's
1763 * not, then the user is trying to mess with us.
1764 */
1765 if (env->regs[13] & 7)
1766 goto badframe;
1767
f8b0aa25
FB		 1768 frame_addr = env->regs[13];
1769 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
1770 goto badframe;
43fff238 1771
a8c33204
PB		 1772 if (do_sigframe_return_v2(env, frame_addr, &frame->uc))
1773 goto badframe;
a04e134a 1774
f8b0aa25 1775 unlock_user_struct(frame, frame_addr, 0);
43fff238
FB		 1776 return env->regs[0];
1777
1778badframe:
f8b0aa25 1779 unlock_user_struct(frame, frame_addr, 0);
66393fb9 1780 force_sig(TARGET_SIGSEGV /* , current */);
43fff238
FB		 1781 return 0;
1782}
1783
05390248 1784long do_rt_sigreturn(CPUARMState *env)
a745ec6d
PB		 1785{
1786 if (get_osversion() >= 0x020612) {
1787 return do_rt_sigreturn_v2(env);
1788 } else {
1789 return do_rt_sigreturn_v1(env);
1790 }
1791}
1792
6d5e216d 1793#elif defined(TARGET_SPARC)
80a9d035 1794
6d5e216d
FB		 1795#define __SUNOS_MAXWIN 31
1796
1797/* This is what SunOS does, so shall I. */
1798struct target_sigcontext {
992f48a0 1799 abi_ulong sigc_onstack; /* state to restore */
6d5e216d 1800
992f48a0
BS		 1801 abi_ulong sigc_mask; /* sigmask to restore */
1802 abi_ulong sigc_sp; /* stack pointer */
1803 abi_ulong sigc_pc; /* program counter */
1804 abi_ulong sigc_npc; /* next program counter */
1805 abi_ulong sigc_psr; /* for condition codes etc */
1806 abi_ulong sigc_g1; /* User uses these two registers */
1807 abi_ulong sigc_o0; /* within the trampoline code. */
6d5e216d
FB		 1808
1809 /* Now comes information regarding the users window set
1810 * at the time of the signal.
1811 */
992f48a0 1812 abi_ulong sigc_oswins; /* outstanding windows */
6d5e216d
FB		 1813
1814 /* stack ptrs for each regwin buf */
1815 char *sigc_spbuf[__SUNOS_MAXWIN];
1816
1817 /* Windows to restore after signal */
1818 struct {
992f48a0
BS		 1819 abi_ulong locals[8];
1820 abi_ulong ins[8];
6d5e216d
FB		 1821 } sigc_wbuf[__SUNOS_MAXWIN];
1822};
1823/* A Sparc stack frame */
1824struct sparc_stackf {
992f48a0 1825 abi_ulong locals[8];
e321c34a
PM		 1826 abi_ulong ins[8];
1827 /* It's simpler to treat fp and callers_pc as elements of ins[]
1828 * since we never need to access them ourselves.
1829 */
6d5e216d 1830 char *structptr;
992f48a0
BS		 1831 abi_ulong xargs[6];
1832 abi_ulong xxargs[1];
6d5e216d
FB		 1833};
1834
1835typedef struct {
1836 struct {
992f48a0
BS		 1837 abi_ulong psr;
1838 abi_ulong pc;
1839 abi_ulong npc;
1840 abi_ulong y;
1841 abi_ulong u_regs[16]; /* globals and ins */
6d5e216d
FB		 1842 } si_regs;
1843 int si_mask;
1844} __siginfo_t;
1845
1846typedef struct {
1847 unsigned long si_float_regs [32];
1848 unsigned long si_fsr;
1849 unsigned long si_fpqdepth;
1850 struct {
1851 unsigned long *insn_addr;
1852 unsigned long insn;
1853 } si_fpqueue [16];
c227f099 1854} qemu_siginfo_fpu_t;
6d5e216d
FB		 1855
1856
1857struct target_signal_frame {
1858 struct sparc_stackf ss;
1859 __siginfo_t info;
f8b0aa25 1860 abi_ulong fpu_save;
992f48a0
BS		 1861 abi_ulong insns[2] __attribute__ ((aligned (8)));
1862 abi_ulong extramask[TARGET_NSIG_WORDS - 1];
1863 abi_ulong extra_size; /* Should be 0 */
c227f099 1864 qemu_siginfo_fpu_t fpu_state;
6d5e216d
FB		 1865};
1866struct target_rt_signal_frame {
1867 struct sparc_stackf ss;
1868 siginfo_t info;
992f48a0 1869 abi_ulong regs[20];
6d5e216d 1870 sigset_t mask;
f8b0aa25 1871 abi_ulong fpu_save;
6d5e216d
FB		 1872 unsigned int insns[2];
1873 stack_t stack;
1874 unsigned int extra_size; /* Should be 0 */
c227f099 1875 qemu_siginfo_fpu_t fpu_state;
6d5e216d
FB		 1876};
1877
e80cfcfc
FB		 1878#define UREG_O0 16
1879#define UREG_O6 22
1880#define UREG_I0 0
1881#define UREG_I1 1
1882#define UREG_I2 2
5bfb56b2
BS		 1883#define UREG_I3 3
1884#define UREG_I4 4
1885#define UREG_I5 5
e80cfcfc
FB		 1886#define UREG_I6 6
1887#define UREG_I7 7
1888#define UREG_L0 8
6d5e216d
FB		 1889#define UREG_FP UREG_I6
1890#define UREG_SP UREG_O6
1891
624f7979 1892static inline abi_ulong get_sigframe(struct target_sigaction *sa,
05390248
AF		 1893 CPUSPARCState *env,
1894 unsigned long framesize)
6d5e216d 1895{
459a4017 1896 abi_ulong sp;
6d5e216d
FB		 1897
1898 sp = env->regwptr[UREG_FP];
6d5e216d
FB		 1899
1900 /* This is the X/Open sanctioned signal stack switching. */
624f7979 1901 if (sa->sa_flags & TARGET_SA_ONSTACK) {
a04e134a
TS		 1902 if (!on_sig_stack(sp)
1903 && !((target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size) & 7))
1904 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
6d5e216d 1905 }
459a4017 1906 return sp - framesize;
6d5e216d
FB		 1907}
1908
1909static int
05390248 1910setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
6d5e216d
FB		 1911{
1912 int err = 0, i;
1913
6d5e216d 1914 err |= __put_user(env->psr, &si->si_regs.psr);
6d5e216d
FB		 1915 err |= __put_user(env->pc, &si->si_regs.pc);
1916 err |= __put_user(env->npc, &si->si_regs.npc);
1917 err |= __put_user(env->y, &si->si_regs.y);
a315a145 1918 for (i=0; i < 8; i++) {
6d5e216d
FB		 1919 err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
1920 }
a315a145 1921 for (i=0; i < 8; i++) {
e80cfcfc 1922 err |= __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
6d5e216d 1923 }
6d5e216d
FB		 1924 err |= __put_user(mask, &si->si_mask);
1925 return err;
1926}
e80cfcfc 1927
80a9d035 1928#if 0
6d5e216d
FB		 1929static int
1930setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
05390248 1931 CPUSPARCState *env, unsigned long mask)
6d5e216d
FB		 1932{
1933 int err = 0;
1934
1935 err |= __put_user(mask, &sc->sigc_mask);
1936 err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
1937 err |= __put_user(env->pc, &sc->sigc_pc);
1938 err |= __put_user(env->npc, &sc->sigc_npc);
1939 err |= __put_user(env->psr, &sc->sigc_psr);
1940 err |= __put_user(env->gregs[1], &sc->sigc_g1);
1941 err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
1942
1943 return err;
1944}
80a9d035 1945#endif
6d5e216d
FB		 1946#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
1947
624f7979 1948static void setup_frame(int sig, struct target_sigaction *ka,
05390248 1949 target_sigset_t *set, CPUSPARCState *env)
6d5e216d 1950{
459a4017 1951 abi_ulong sf_addr;
6d5e216d
FB		 1952 struct target_signal_frame *sf;
1953 int sigframe_size, err, i;
1954
1955 /* 1. Make sure everything is clean */
1956 //synchronize_user_stack();
1957
1958 sigframe_size = NF_ALIGNEDSZ;
459a4017 1959 sf_addr = get_sigframe(ka, env, sigframe_size);
6d5e216d 1960
459a4017
FB		 1961 sf = lock_user(VERIFY_WRITE, sf_addr,
1962 sizeof(struct target_signal_frame), 0);
1963 if (!sf)
1964 goto sigsegv;
1965
e80cfcfc 1966 //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
6d5e216d
FB		 1967#if 0
1968 if (invalid_frame_pointer(sf, sigframe_size))
1969 goto sigill_and_return;
1970#endif
1971 /* 2. Save the current process state */
1972 err = setup___siginfo(&sf->info, env, set->sig[0]);
1973 err |= __put_user(0, &sf->extra_size);
1974
1975 //err |= save_fpu_state(regs, &sf->fpu_state);
1976 //err |= __put_user(&sf->fpu_state, &sf->fpu_save);
1977
1978 err |= __put_user(set->sig[0], &sf->info.si_mask);
1979 for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
1980 err |= __put_user(set->sig[i + 1], &sf->extramask[i]);
1981 }
1982
a315a145 1983 for (i = 0; i < 8; i++) {
e80cfcfc 1984 err |= __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
6d5e216d 1985 }
a315a145 1986 for (i = 0; i < 8; i++) {
e80cfcfc 1987 err |= __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
6d5e216d 1988 }
6d5e216d
FB		 1989 if (err)
1990 goto sigsegv;
1991
1992 /* 3. signal handler back-trampoline and parameters */
459a4017 1993 env->regwptr[UREG_FP] = sf_addr;
6d5e216d 1994 env->regwptr[UREG_I0] = sig;
459a4017
FB		 1995 env->regwptr[UREG_I1] = sf_addr +
1996 offsetof(struct target_signal_frame, info);
1997 env->regwptr[UREG_I2] = sf_addr +
1998 offsetof(struct target_signal_frame, info);
6d5e216d
FB		 1999
2000 /* 4. signal handler */
624f7979 2001 env->pc = ka->_sa_handler;
6d5e216d
FB		 2002 env->npc = (env->pc + 4);
2003 /* 5. return to kernel instructions */
624f7979
PB		 2004 if (ka->sa_restorer)
2005 env->regwptr[UREG_I7] = ka->sa_restorer;
6d5e216d 2006 else {
775b58d8 2007 uint32_t val32;
459a4017
FB		 2008
2009 env->regwptr[UREG_I7] = sf_addr +
2010 offsetof(struct target_signal_frame, insns) - 2 * 4;
6d5e216d
FB		 2011
2012 /* mov __NR_sigreturn, %g1 */
775b58d8
FB		 2013 val32 = 0x821020d8;
2014 err |= __put_user(val32, &sf->insns[0]);
6d5e216d
FB		 2015
2016 /* t 0x10 */
775b58d8
FB		 2017 val32 = 0x91d02010;
2018 err |= __put_user(val32, &sf->insns[1]);
6d5e216d
FB		 2019 if (err)
2020 goto sigsegv;
2021
2022 /* Flush instruction space. */
2023 //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
80a9d035 2024 // tb_flush(env);
6d5e216d 2025 }
459a4017 2026 unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
6d5e216d 2027 return;
459a4017
FB		 2028#if 0
2029sigill_and_return:
6d5e216d 2030 force_sig(TARGET_SIGILL);
459a4017 2031#endif
6d5e216d 2032sigsegv:
e80cfcfc 2033 //fprintf(stderr, "force_sig\n");
459a4017 2034 unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
6d5e216d
FB		 2035 force_sig(TARGET_SIGSEGV);
2036}
2037static inline int
05390248 2038restore_fpu_state(CPUSPARCState *env, qemu_siginfo_fpu_t *fpu)
6d5e216d
FB		 2039{
2040 int err;
2041#if 0
2042#ifdef CONFIG_SMP
2043 if (current->flags & PF_USEDFPU)
2044 regs->psr &= ~PSR_EF;
2045#else
2046 if (current == last_task_used_math) {
2047 last_task_used_math = 0;
2048 regs->psr &= ~PSR_EF;
2049 }
2050#endif
2051 current->used_math = 1;
2052 current->flags &= ~PF_USEDFPU;
2053#endif
2054#if 0
2055 if (verify_area (VERIFY_READ, fpu, sizeof(*fpu)))
2056 return -EFAULT;
2057#endif
2058
fafffaef
FB		 2059#if 0
2060 /* XXX: incorrect */
6d5e216d
FB		 2061 err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0],
2062 (sizeof(unsigned long) * 32));
fafffaef 2063#endif
6d5e216d
FB		 2064 err |= __get_user(env->fsr, &fpu->si_fsr);
2065#if 0
2066 err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
2067 if (current->thread.fpqdepth != 0)
2068 err |= __copy_from_user(&current->thread.fpqueue[0],
2069 &fpu->si_fpqueue[0],
2070 ((sizeof(unsigned long) +
2071 (sizeof(unsigned long *)))*16));
2072#endif
2073 return err;
2074}
2075
2076
624f7979 2077static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2078 target_siginfo_t *info,
05390248 2079 target_sigset_t *set, CPUSPARCState *env)
6d5e216d
FB		 2080{
2081 fprintf(stderr, "setup_rt_frame: not implemented\n");
2082}
2083
05390248 2084long do_sigreturn(CPUSPARCState *env)
6d5e216d 2085{
f8b0aa25 2086 abi_ulong sf_addr;
6d5e216d 2087 struct target_signal_frame *sf;
e80cfcfc 2088 uint32_t up_psr, pc, npc;
c227f099 2089 target_sigset_t set;
e80cfcfc 2090 sigset_t host_set;
e80cfcfc 2091 int err, i;
6d5e216d 2092
f8b0aa25
FB		 2093 sf_addr = env->regwptr[UREG_FP];
2094 if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1))
2095 goto segv_and_exit;
80a9d035 2096#if 0
e80cfcfc
FB		 2097 fprintf(stderr, "sigreturn\n");
2098 fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
80a9d035 2099#endif
e80cfcfc 2100 //cpu_dump_state(env, stderr, fprintf, 0);
6d5e216d
FB		 2101
2102 /* 1. Make sure we are not getting garbage from the user */
6d5e216d 2103
f8b0aa25 2104 if (sf_addr & 3)
6d5e216d
FB		 2105 goto segv_and_exit;
2106
2107 err = __get_user(pc, &sf->info.si_regs.pc);
2108 err |= __get_user(npc, &sf->info.si_regs.npc);
2109
6d5e216d
FB		 2110 if ((pc | npc) & 3)
2111 goto segv_and_exit;
2112
2113 /* 2. Restore the state */
e80cfcfc
FB		 2114 err |= __get_user(up_psr, &sf->info.si_regs.psr);
2115
6d5e216d 2116 /* User can only change condition codes and FPU enabling in %psr. */
a315a145
FB		 2117 env->psr = (up_psr & (PSR_ICC /* | PSR_EF */))
2118 | (env->psr & ~(PSR_ICC /* | PSR_EF */));
2119
2120 env->pc = pc;
2121 env->npc = npc;
e80cfcfc 2122 err |= __get_user(env->y, &sf->info.si_regs.y);
a315a145 2123 for (i=0; i < 8; i++) {
e80cfcfc
FB		 2124 err |= __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
2125 }
a315a145 2126 for (i=0; i < 8; i++) {
e80cfcfc
FB		 2127 err |= __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
2128 }
6d5e216d 2129
2aec3a27
PM		 2130 /* FIXME: implement FPU save/restore:
2131 * __get_user(fpu_save, &sf->fpu_save);
2132 * if (fpu_save)
2133 * err |= restore_fpu_state(env, fpu_save);
2134 */
6d5e216d
FB		 2135
2136 /* This is pretty much atomic, no amount locking would prevent
2137 * the races which exist anyways.
2138 */
2139 err |= __get_user(set.sig[0], &sf->info.si_mask);
e80cfcfc
FB		 2140 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
2141 err |= (__get_user(set.sig[i], &sf->extramask[i - 1]));
2142 }
2143
2144 target_to_host_sigset_internal(&host_set, &set);
2145 sigprocmask(SIG_SETMASK, &host_set, NULL);
6d5e216d
FB		 2146
2147 if (err)
2148 goto segv_and_exit;
f8b0aa25 2149 unlock_user_struct(sf, sf_addr, 0);
6d5e216d
FB		 2150 return env->regwptr[0];
2151
2152segv_and_exit:
f8b0aa25 2153 unlock_user_struct(sf, sf_addr, 0);
6d5e216d
FB		 2154 force_sig(TARGET_SIGSEGV);
2155}
2156
05390248 2157long do_rt_sigreturn(CPUSPARCState *env)
6d5e216d
FB		 2158{
2159 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 2160 return -TARGET_ENOSYS;
6d5e216d
FB		 2161}
2162
459a4017 2163#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
5bfb56b2
BS		 2164#define MC_TSTATE 0
2165#define MC_PC 1
2166#define MC_NPC 2
2167#define MC_Y 3
2168#define MC_G1 4
2169#define MC_G2 5
2170#define MC_G3 6
2171#define MC_G4 7
2172#define MC_G5 8
2173#define MC_G6 9
2174#define MC_G7 10
2175#define MC_O0 11
2176#define MC_O1 12
2177#define MC_O2 13
2178#define MC_O3 14
2179#define MC_O4 15
2180#define MC_O5 16
2181#define MC_O6 17
2182#define MC_O7 18
2183#define MC_NGREG 19
2184
c227f099
AL		 2185typedef abi_ulong target_mc_greg_t;
2186typedef target_mc_greg_t target_mc_gregset_t[MC_NGREG];
5bfb56b2
BS		 2187
2188struct target_mc_fq {
992f48a0 2189 abi_ulong *mcfq_addr;
5bfb56b2
BS		 2190 uint32_t mcfq_insn;
2191};
2192
2193struct target_mc_fpu {
2194 union {
2195 uint32_t sregs[32];
2196 uint64_t dregs[32];
2197 //uint128_t qregs[16];
2198 } mcfpu_fregs;
992f48a0
BS		 2199 abi_ulong mcfpu_fsr;
2200 abi_ulong mcfpu_fprs;
2201 abi_ulong mcfpu_gsr;
5bfb56b2
BS		 2202 struct target_mc_fq *mcfpu_fq;
2203 unsigned char mcfpu_qcnt;
2204 unsigned char mcfpu_qentsz;
2205 unsigned char mcfpu_enab;
2206};
c227f099 2207typedef struct target_mc_fpu target_mc_fpu_t;
5bfb56b2
BS		 2208
2209typedef struct {
c227f099
AL		 2210 target_mc_gregset_t mc_gregs;
2211 target_mc_greg_t mc_fp;
2212 target_mc_greg_t mc_i7;
2213 target_mc_fpu_t mc_fpregs;
2214} target_mcontext_t;
5bfb56b2
BS		 2215
2216struct target_ucontext {
60e99246
AJ		 2217 struct target_ucontext *tuc_link;
2218 abi_ulong tuc_flags;
2219 target_sigset_t tuc_sigmask;
2220 target_mcontext_t tuc_mcontext;
5bfb56b2
BS		 2221};
2222
2223/* A V9 register window */
2224struct target_reg_window {
992f48a0
BS		 2225 abi_ulong locals[8];
2226 abi_ulong ins[8];
5bfb56b2
BS		 2227};
2228
2229#define TARGET_STACK_BIAS 2047
2230
2231/* {set, get}context() needed for 64-bit SparcLinux userland. */
2232void sparc64_set_context(CPUSPARCState *env)
2233{
459a4017
FB		 2234 abi_ulong ucp_addr;
2235 struct target_ucontext *ucp;
c227f099 2236 target_mc_gregset_t *grp;
992f48a0 2237 abi_ulong pc, npc, tstate;
459a4017 2238 abi_ulong fp, i7, w_addr;
5bfb56b2
BS		 2239 int err;
2240 unsigned int i;
5bfb56b2 2241
459a4017
FB		 2242 ucp_addr = env->regwptr[UREG_I0];
2243 if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1))
2244 goto do_sigsegv;
60e99246 2245 grp = &ucp->tuc_mcontext.mc_gregs;
579a97f7
FB		 2246 err = __get_user(pc, &((*grp)[MC_PC]));
2247 err |= __get_user(npc, &((*grp)[MC_NPC]));
5bfb56b2
BS		 2248 if (err || ((pc | npc) & 3))
2249 goto do_sigsegv;
2250 if (env->regwptr[UREG_I1]) {
c227f099 2251 target_sigset_t target_set;
5bfb56b2
BS		 2252 sigset_t set;
2253
2254 if (TARGET_NSIG_WORDS == 1) {
60e99246 2255 if (__get_user(target_set.sig[0], &ucp->tuc_sigmask.sig[0]))
5bfb56b2
BS		 2256 goto do_sigsegv;
2257 } else {
459a4017 2258 abi_ulong *src, *dst;
60e99246 2259 src = ucp->tuc_sigmask.sig;
459a4017 2260 dst = target_set.sig;
c227f099 2261 for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong);
5bfb56b2 2262 i++, dst++, src++)
459a4017 2263 err |= __get_user(*dst, src);
5bfb56b2
BS		 2264 if (err)
2265 goto do_sigsegv;
2266 }
2267 target_to_host_sigset_internal(&set, &target_set);
2268 sigprocmask(SIG_SETMASK, &set, NULL);
2269 }
2270 env->pc = pc;
2271 env->npc = npc;
579a97f7
FB		 2272 err |= __get_user(env->y, &((*grp)[MC_Y]));
2273 err |= __get_user(tstate, &((*grp)[MC_TSTATE]));
5bfb56b2 2274 env->asi = (tstate >> 24) & 0xff;
5a834bb4
BS		 2275 cpu_put_ccr(env, tstate >> 32);
2276 cpu_put_cwp64(env, tstate & 0x1f);
579a97f7
FB		 2277 err |= __get_user(env->gregs[1], (&(*grp)[MC_G1]));
2278 err |= __get_user(env->gregs[2], (&(*grp)[MC_G2]));
2279 err |= __get_user(env->gregs[3], (&(*grp)[MC_G3]));
2280 err |= __get_user(env->gregs[4], (&(*grp)[MC_G4]));
2281 err |= __get_user(env->gregs[5], (&(*grp)[MC_G5]));
2282 err |= __get_user(env->gregs[6], (&(*grp)[MC_G6]));
2283 err |= __get_user(env->gregs[7], (&(*grp)[MC_G7]));
2284 err |= __get_user(env->regwptr[UREG_I0], (&(*grp)[MC_O0]));
2285 err |= __get_user(env->regwptr[UREG_I1], (&(*grp)[MC_O1]));
2286 err |= __get_user(env->regwptr[UREG_I2], (&(*grp)[MC_O2]));
2287 err |= __get_user(env->regwptr[UREG_I3], (&(*grp)[MC_O3]));
2288 err |= __get_user(env->regwptr[UREG_I4], (&(*grp)[MC_O4]));
2289 err |= __get_user(env->regwptr[UREG_I5], (&(*grp)[MC_O5]));
2290 err |= __get_user(env->regwptr[UREG_I6], (&(*grp)[MC_O6]));
2291 err |= __get_user(env->regwptr[UREG_I7], (&(*grp)[MC_O7]));
2292
60e99246
AJ		 2293 err |= __get_user(fp, &(ucp->tuc_mcontext.mc_fp));
2294 err |= __get_user(i7, &(ucp->tuc_mcontext.mc_i7));
579a97f7 2295
459a4017
FB		 2296 w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
2297 if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
2298 abi_ulong) != 0)
2299 goto do_sigsegv;
2300 if (put_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
2301 abi_ulong) != 0)
2302 goto do_sigsegv;
c7b016ba
PM		 2303 /* FIXME this does not match how the kernel handles the FPU in
2304 * its sparc64_set_context implementation. In particular the FPU
2305 * is only restored if fenab is non-zero in:
2306 * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab));
2307 */
60e99246 2308 err |= __get_user(env->fprs, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fprs));
459a4017 2309 {
30038fd8
RH		 2310 uint32_t *src = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
2311 for (i = 0; i < 64; i++, src++) {
2312 if (i & 1) {
2313 err |= __get_user(env->fpr[i/2].l.lower, src);
2314 } else {
2315 err |= __get_user(env->fpr[i/2].l.upper, src);
2316 }
2317 }
459a4017 2318 }
579a97f7 2319 err |= __get_user(env->fsr,
60e99246 2320 &(ucp->tuc_mcontext.mc_fpregs.mcfpu_fsr));
579a97f7 2321 err |= __get_user(env->gsr,
60e99246 2322 &(ucp->tuc_mcontext.mc_fpregs.mcfpu_gsr));
5bfb56b2
BS		 2323 if (err)
2324 goto do_sigsegv;
459a4017 2325 unlock_user_struct(ucp, ucp_addr, 0);
5bfb56b2
BS		 2326 return;
2327 do_sigsegv:
459a4017 2328 unlock_user_struct(ucp, ucp_addr, 0);
66393fb9 2329 force_sig(TARGET_SIGSEGV);
5bfb56b2
BS		 2330}
2331
2332void sparc64_get_context(CPUSPARCState *env)
2333{
459a4017
FB		 2334 abi_ulong ucp_addr;
2335 struct target_ucontext *ucp;
c227f099
AL		 2336 target_mc_gregset_t *grp;
2337 target_mcontext_t *mcp;
459a4017 2338 abi_ulong fp, i7, w_addr;
5bfb56b2
BS		 2339 int err;
2340 unsigned int i;
c227f099 2341 target_sigset_t target_set;
5bfb56b2
BS		 2342 sigset_t set;
2343
459a4017
FB		 2344 ucp_addr = env->regwptr[UREG_I0];
2345 if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0))
2346 goto do_sigsegv;
2347
60e99246 2348 mcp = &ucp->tuc_mcontext;
5bfb56b2
BS		 2349 grp = &mcp->mc_gregs;
2350
2351 /* Skip over the trap instruction, first. */
2352 env->pc = env->npc;
2353 env->npc += 4;
2354
2355 err = 0;
2356
2357 sigprocmask(0, NULL, &set);
2358 host_to_target_sigset_internal(&target_set, &set);
459a4017 2359 if (TARGET_NSIG_WORDS == 1) {
579a97f7 2360 err |= __put_user(target_set.sig[0],
60e99246 2361 (abi_ulong *)&ucp->tuc_sigmask);
459a4017
FB		 2362 } else {
2363 abi_ulong *src, *dst;
2364 src = target_set.sig;
60e99246 2365 dst = ucp->tuc_sigmask.sig;
c227f099 2366 for (i = 0; i < sizeof(target_sigset_t) / sizeof(abi_ulong);
5bfb56b2 2367 i++, dst++, src++)
459a4017 2368 err |= __put_user(*src, dst);
5bfb56b2
BS		 2369 if (err)
2370 goto do_sigsegv;
2371 }
2372
459a4017
FB		 2373 /* XXX: tstate must be saved properly */
2374 // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE]));
579a97f7
FB		 2375 err |= __put_user(env->pc, &((*grp)[MC_PC]));
2376 err |= __put_user(env->npc, &((*grp)[MC_NPC]));
2377 err |= __put_user(env->y, &((*grp)[MC_Y]));
2378 err |= __put_user(env->gregs[1], &((*grp)[MC_G1]));
2379 err |= __put_user(env->gregs[2], &((*grp)[MC_G2]));
2380 err |= __put_user(env->gregs[3], &((*grp)[MC_G3]));
2381 err |= __put_user(env->gregs[4], &((*grp)[MC_G4]));
2382 err |= __put_user(env->gregs[5], &((*grp)[MC_G5]));
2383 err |= __put_user(env->gregs[6], &((*grp)[MC_G6]));
2384 err |= __put_user(env->gregs[7], &((*grp)[MC_G7]));
2385 err |= __put_user(env->regwptr[UREG_I0], &((*grp)[MC_O0]));
2386 err |= __put_user(env->regwptr[UREG_I1], &((*grp)[MC_O1]));
2387 err |= __put_user(env->regwptr[UREG_I2], &((*grp)[MC_O2]));
2388 err |= __put_user(env->regwptr[UREG_I3], &((*grp)[MC_O3]));
2389 err |= __put_user(env->regwptr[UREG_I4], &((*grp)[MC_O4]));
2390 err |= __put_user(env->regwptr[UREG_I5], &((*grp)[MC_O5]));
2391 err |= __put_user(env->regwptr[UREG_I6], &((*grp)[MC_O6]));
2392 err |= __put_user(env->regwptr[UREG_I7], &((*grp)[MC_O7]));
2393
459a4017
FB		 2394 w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
2395 fp = i7 = 0;
2396 if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
2397 abi_ulong) != 0)
2398 goto do_sigsegv;
2399 if (get_user(i7, w_addr + offsetof(struct target_reg_window, ins[7]),
2400 abi_ulong) != 0)
2401 goto do_sigsegv;
579a97f7
FB		 2402 err |= __put_user(fp, &(mcp->mc_fp));
2403 err |= __put_user(i7, &(mcp->mc_i7));
5bfb56b2 2404
459a4017 2405 {
30038fd8
RH		 2406 uint32_t *dst = ucp->tuc_mcontext.mc_fpregs.mcfpu_fregs.sregs;
2407 for (i = 0; i < 64; i++, dst++) {
2408 if (i & 1) {
2409 err |= __put_user(env->fpr[i/2].l.lower, dst);
2410 } else {
2411 err |= __put_user(env->fpr[i/2].l.upper, dst);
2412 }
2413 }
459a4017 2414 }
579a97f7
FB		 2415 err |= __put_user(env->fsr, &(mcp->mc_fpregs.mcfpu_fsr));
2416 err |= __put_user(env->gsr, &(mcp->mc_fpregs.mcfpu_gsr));
2417 err |= __put_user(env->fprs, &(mcp->mc_fpregs.mcfpu_fprs));
5bfb56b2
BS		 2418
2419 if (err)
2420 goto do_sigsegv;
459a4017 2421 unlock_user_struct(ucp, ucp_addr, 1);
5bfb56b2
BS		 2422 return;
2423 do_sigsegv:
459a4017 2424 unlock_user_struct(ucp, ucp_addr, 1);
66393fb9 2425 force_sig(TARGET_SIGSEGV);
5bfb56b2
BS		 2426}
2427#endif
d26bc211 2428#elif defined(TARGET_ABI_MIPSN64)
540635ba
TS		 2429
2430# warning signal handling not implemented
2431
624f7979 2432static void setup_frame(int sig, struct target_sigaction *ka,
05390248 2433 target_sigset_t *set, CPUMIPSState *env)
540635ba
TS		 2434{
2435 fprintf(stderr, "setup_frame: not implemented\n");
2436}
2437
624f7979 2438static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2439 target_siginfo_t *info,
05390248 2440 target_sigset_t *set, CPUMIPSState *env)
540635ba
TS		 2441{
2442 fprintf(stderr, "setup_rt_frame: not implemented\n");
2443}
2444
05390248 2445long do_sigreturn(CPUMIPSState *env)
540635ba
TS		 2446{
2447 fprintf(stderr, "do_sigreturn: not implemented\n");
f8b0aa25 2448 return -TARGET_ENOSYS;
540635ba
TS		 2449}
2450
05390248 2451long do_rt_sigreturn(CPUMIPSState *env)
540635ba
TS		 2452{
2453 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 2454 return -TARGET_ENOSYS;
540635ba
TS		 2455}
2456
d26bc211 2457#elif defined(TARGET_ABI_MIPSN32)
540635ba
TS		 2458
2459# warning signal handling not implemented
2460
624f7979 2461static void setup_frame(int sig, struct target_sigaction *ka,
05390248 2462 target_sigset_t *set, CPUMIPSState *env)
540635ba
TS		 2463{
2464 fprintf(stderr, "setup_frame: not implemented\n");
2465}
2466
624f7979 2467static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2468 target_siginfo_t *info,
05390248 2469 target_sigset_t *set, CPUMIPSState *env)
540635ba
TS		 2470{
2471 fprintf(stderr, "setup_rt_frame: not implemented\n");
2472}
2473
05390248 2474long do_sigreturn(CPUMIPSState *env)
540635ba
TS		 2475{
2476 fprintf(stderr, "do_sigreturn: not implemented\n");
f8b0aa25 2477 return -TARGET_ENOSYS;
540635ba
TS		 2478}
2479
05390248 2480long do_rt_sigreturn(CPUMIPSState *env)
540635ba
TS		 2481{
2482 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 2483 return -TARGET_ENOSYS;
540635ba
TS		 2484}
2485
d26bc211 2486#elif defined(TARGET_ABI_MIPSO32)
106ec879
FB		 2487
2488struct target_sigcontext {
2489 uint32_t sc_regmask; /* Unused */
2490 uint32_t sc_status;
2491 uint64_t sc_pc;
2492 uint64_t sc_regs[32];
2493 uint64_t sc_fpregs[32];
2494 uint32_t sc_ownedfp; /* Unused */
2495 uint32_t sc_fpc_csr;
2496 uint32_t sc_fpc_eir; /* Unused */
2497 uint32_t sc_used_math;
2498 uint32_t sc_dsp; /* dsp status, was sc_ssflags */
94c5495d 2499 uint32_t pad0;
106ec879
FB		 2500 uint64_t sc_mdhi;
2501 uint64_t sc_mdlo;
2502 target_ulong sc_hi1; /* Was sc_cause */
2503 target_ulong sc_lo1; /* Was sc_badvaddr */
2504 target_ulong sc_hi2; /* Was sc_sigset[4] */
2505 target_ulong sc_lo2;
2506 target_ulong sc_hi3;
2507 target_ulong sc_lo3;
2508};
2509
2510struct sigframe {
2511 uint32_t sf_ass[4]; /* argument save space for o32 */
2512 uint32_t sf_code[2]; /* signal trampoline */
2513 struct target_sigcontext sf_sc;
c227f099 2514 target_sigset_t sf_mask;
106ec879
FB		 2515};
2516
0b1bcb00 2517struct target_ucontext {
60e99246
AJ		 2518 target_ulong tuc_flags;
2519 target_ulong tuc_link;
2520 target_stack_t tuc_stack;
94c5495d 2521 target_ulong pad0;
60e99246
AJ		 2522 struct target_sigcontext tuc_mcontext;
2523 target_sigset_t tuc_sigmask;
0b1bcb00
PB		 2524};
2525
2526struct target_rt_sigframe {
2527 uint32_t rs_ass[4]; /* argument save space for o32 */
2528 uint32_t rs_code[2]; /* signal trampoline */
2529 struct target_siginfo rs_info;
2530 struct target_ucontext rs_uc;
2531};
2532
106ec879
FB		 2533/* Install trampoline to jump back from signal handler */
2534static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall)
2535{
2536 int err;
2537
2538 /*
2539 * Set up the return code ...
2540 *
2541 * li v0, __NR__foo_sigreturn
2542 * syscall
2543 */
2544
2545 err = __put_user(0x24020000 + syscall, tramp + 0);
2546 err |= __put_user(0x0000000c , tramp + 1);
2547 /* flush_cache_sigtramp((unsigned long) tramp); */
2548 return err;
2549}
2550
2551static inline int
05390248 2552setup_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
106ec879
FB		 2553{
2554 int err = 0;
2555
b5dc7732 2556 err |= __put_user(regs->active_tc.PC, &sc->sc_pc);
106ec879 2557
b5dc7732
TS		 2558#define save_gp_reg(i) do { \
2559 err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \
106ec879
FB		 2560 } while(0)
2561 __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2);
2562 save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6);
2563 save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10);
2564 save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
2565 save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18);
2566 save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22);
2567 save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
2568 save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30);
2569 save_gp_reg(31);
388bb21a 2570#undef save_gp_reg
106ec879 2571
b5dc7732
TS		 2572 err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
2573 err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
106ec879
FB		 2574
2575 /* Not used yet, but might be useful if we ever have DSP suppport */
2576#if 0
2577 if (cpu_has_dsp) {
2578 err |= __put_user(mfhi1(), &sc->sc_hi1);
2579 err |= __put_user(mflo1(), &sc->sc_lo1);
2580 err |= __put_user(mfhi2(), &sc->sc_hi2);
2581 err |= __put_user(mflo2(), &sc->sc_lo2);
2582 err |= __put_user(mfhi3(), &sc->sc_hi3);
2583 err |= __put_user(mflo3(), &sc->sc_lo3);
2584 err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
2585 }
2586 /* same with 64 bit */
388bb21a 2587#ifdef CONFIG_64BIT
106ec879
FB		 2588 err |= __put_user(regs->hi, &sc->sc_hi[0]);
2589 err |= __put_user(regs->lo, &sc->sc_lo[0]);
2590 if (cpu_has_dsp) {
2591 err |= __put_user(mfhi1(), &sc->sc_hi[1]);
2592 err |= __put_user(mflo1(), &sc->sc_lo[1]);
2593 err |= __put_user(mfhi2(), &sc->sc_hi[2]);
2594 err |= __put_user(mflo2(), &sc->sc_lo[2]);
2595 err |= __put_user(mfhi3(), &sc->sc_hi[3]);
2596 err |= __put_user(mflo3(), &sc->sc_lo[3]);
2597 err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
2598 }
388bb21a
TS		 2599#endif
2600#endif
106ec879 2601
388bb21a 2602#if 0
106ec879
FB		 2603 err |= __put_user(!!used_math(), &sc->sc_used_math);
2604
2605 if (!used_math())
2606 goto out;
2607
2608 /*
2609 * Save FPU state to signal context. Signal handler will "inherit"
2610 * current FPU state.
2611 */
2612 preempt_disable();
2613
2614 if (!is_fpu_owner()) {
2615 own_fpu();
2616 restore_fp(current);
2617 }
2618 err |= save_fp_context(sc);
2619
2620 preempt_enable();
2621 out:
2622#endif
2623 return err;
2624}
2625
2626static inline int
05390248 2627restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
106ec879
FB		 2628{
2629 int err = 0;
2630
2631 err |= __get_user(regs->CP0_EPC, &sc->sc_pc);
2632
b5dc7732
TS		 2633 err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
2634 err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
106ec879 2635
ead9360e 2636#define restore_gp_reg(i) do { \
b5dc7732 2637 err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \
106ec879
FB		 2638 } while(0)
2639 restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3);
2640 restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6);
2641 restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9);
2642 restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12);
2643 restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15);
2644 restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18);
2645 restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21);
2646 restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24);
2647 restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27);
2648 restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30);
2649 restore_gp_reg(31);
388bb21a 2650#undef restore_gp_reg
106ec879
FB		 2651
2652#if 0
2653 if (cpu_has_dsp) {
2654 err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);
2655 err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);
2656 err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);
2657 err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);
2658 err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);
2659 err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);
2660 err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
2661 }
388bb21a 2662#ifdef CONFIG_64BIT
106ec879
FB		 2663 err |= __get_user(regs->hi, &sc->sc_hi[0]);
2664 err |= __get_user(regs->lo, &sc->sc_lo[0]);
2665 if (cpu_has_dsp) {
2666 err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg);
2667 err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg);
2668 err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg);
2669 err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg);
2670 err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg);
2671 err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg);
2672 err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
2673 }
388bb21a 2674#endif
106ec879
FB		 2675
2676 err |= __get_user(used_math, &sc->sc_used_math);
2677 conditional_used_math(used_math);
2678
2679 preempt_disable();
2680
2681 if (used_math()) {
2682 /* restore fpu context if we have used it before */
2683 own_fpu();
2684 err |= restore_fp_context(sc);
2685 } else {
2686 /* signal handler may have used FPU. Give it up. */
2687 lose_fpu();
2688 }
2689
2690 preempt_enable();
2691#endif
2692 return err;
2693}
2694/*
2695 * Determine which stack to use..
2696 */
579a97f7 2697static inline abi_ulong
05390248 2698get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t frame_size)
106ec879
FB		 2699{
2700 unsigned long sp;
2701
2702 /* Default to using normal stack */
b5dc7732 2703 sp = regs->active_tc.gpr[29];
106ec879
FB		 2704
2705 /*
93148aa5 2706 * FPU emulator may have its own trampoline active just
106ec879
FB		 2707 * above the user stack, 16-bytes before the next lowest
2708 * 16 byte boundary. Try to avoid trashing it.
2709 */
2710 sp -= 32;
2711
106ec879 2712 /* This is the X/Open sanctioned signal stack switching. */
624f7979 2713 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
a04e134a
TS		 2714 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
2715 }
106ec879 2716
579a97f7 2717 return (sp - frame_size) & ~7;
106ec879
FB		 2718}
2719
579a97f7 2720/* compare linux/arch/mips/kernel/signal.c:setup_frame() */
624f7979 2721static void setup_frame(int sig, struct target_sigaction * ka,
05390248 2722 target_sigset_t *set, CPUMIPSState *regs)
106ec879
FB		 2723{
2724 struct sigframe *frame;
579a97f7 2725 abi_ulong frame_addr;
106ec879
FB		 2726 int i;
2727
579a97f7
FB		 2728 frame_addr = get_sigframe(ka, regs, sizeof(*frame));
2729 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
106ec879
FB		 2730 goto give_sigsegv;
2731
2732 install_sigtramp(frame->sf_code, TARGET_NR_sigreturn);
2733
2734 if(setup_sigcontext(regs, &frame->sf_sc))
2735 goto give_sigsegv;
2736
2737 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
2738 if(__put_user(set->sig[i], &frame->sf_mask.sig[i]))
2739 goto give_sigsegv;
2740 }
2741
2742 /*
2743 * Arguments to signal handler:
2744 *
2745 * a0 = signal number
2746 * a1 = 0 (should be cause)
2747 * a2 = pointer to struct sigcontext
2748 *
2749 * $25 and PC point to the signal handler, $29 points to the
2750 * struct sigframe.
2751 */
b5dc7732
TS		 2752 regs->active_tc.gpr[ 4] = sig;
2753 regs->active_tc.gpr[ 5] = 0;
2754 regs->active_tc.gpr[ 6] = frame_addr + offsetof(struct sigframe, sf_sc);
2755 regs->active_tc.gpr[29] = frame_addr;
2756 regs->active_tc.gpr[31] = frame_addr + offsetof(struct sigframe, sf_code);
106ec879
FB		 2757 /* The original kernel code sets CP0_EPC to the handler
2758 * since it returns to userland using eret
2759 * we cannot do this here, and we must set PC directly */
b5dc7732 2760 regs->active_tc.PC = regs->active_tc.gpr[25] = ka->_sa_handler;
579a97f7 2761 unlock_user_struct(frame, frame_addr, 1);
106ec879
FB		 2762 return;
2763
2764give_sigsegv:
579a97f7 2765 unlock_user_struct(frame, frame_addr, 1);
106ec879 2766 force_sig(TARGET_SIGSEGV/*, current*/);
5fafdf24 2767 return;
106ec879
FB		 2768}
2769
05390248 2770long do_sigreturn(CPUMIPSState *regs)
106ec879 2771{
388bb21a 2772 struct sigframe *frame;
579a97f7 2773 abi_ulong frame_addr;
388bb21a 2774 sigset_t blocked;
c227f099 2775 target_sigset_t target_set;
388bb21a 2776 int i;
106ec879
FB		 2777
2778#if defined(DEBUG_SIGNAL)
388bb21a 2779 fprintf(stderr, "do_sigreturn\n");
106ec879 2780#endif
b5dc7732 2781 frame_addr = regs->active_tc.gpr[29];
579a97f7 2782 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
106ec879
FB		 2783 goto badframe;
2784
388bb21a 2785 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
106ec879
FB		 2786 if(__get_user(target_set.sig[i], &frame->sf_mask.sig[i]))
2787 goto badframe;
388bb21a 2788 }
106ec879 2789
388bb21a
TS		 2790 target_to_host_sigset_internal(&blocked, &target_set);
2791 sigprocmask(SIG_SETMASK, &blocked, NULL);
106ec879 2792
388bb21a 2793 if (restore_sigcontext(regs, &frame->sf_sc))
106ec879
FB		 2794 goto badframe;
2795
2796#if 0
388bb21a
TS		 2797 /*
2798 * Don't let your children do this ...
2799 */
2800 __asm__ __volatile__(
106ec879
FB		 2801 "move\t$29, %0\n\t"
2802 "j\tsyscall_exit"
2803 :/* no outputs */
2804 :"r" (&regs));
388bb21a 2805 /* Unreached */
106ec879 2806#endif
3b46e624 2807
b5dc7732 2808 regs->active_tc.PC = regs->CP0_EPC;
388bb21a 2809 /* I am not sure this is right, but it seems to work
106ec879
FB		 2810 * maybe a problem with nested signals ? */
2811 regs->CP0_EPC = 0;
0b1bcb00 2812 return -TARGET_QEMU_ESIGRETURN;
106ec879
FB		 2813
2814badframe:
388bb21a
TS		 2815 force_sig(TARGET_SIGSEGV/*, current*/);
2816 return 0;
106ec879
FB		 2817}
2818
624f7979 2819static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 2820 target_siginfo_t *info,
05390248 2821 target_sigset_t *set, CPUMIPSState *env)
106ec879 2822{
0b1bcb00
PB		 2823 struct target_rt_sigframe *frame;
2824 abi_ulong frame_addr;
2825 int i;
2826
2827 frame_addr = get_sigframe(ka, env, sizeof(*frame));
2828 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
2829 goto give_sigsegv;
2830
2831 install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
2832
2833 copy_siginfo_to_user(&frame->rs_info, info);
2834
60e99246
AJ		 2835 __put_user(0, &frame->rs_uc.tuc_flags);
2836 __put_user(0, &frame->rs_uc.tuc_link);
2837 __put_user(target_sigaltstack_used.ss_sp, &frame->rs_uc.tuc_stack.ss_sp);
2838 __put_user(target_sigaltstack_used.ss_size, &frame->rs_uc.tuc_stack.ss_size);
0b1bcb00 2839 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
60e99246 2840 &frame->rs_uc.tuc_stack.ss_flags);
0b1bcb00 2841
60e99246 2842 setup_sigcontext(env, &frame->rs_uc.tuc_mcontext);
0b1bcb00
PB		 2843
2844 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
60e99246 2845 __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]);
0b1bcb00
PB		 2846 }
2847
2848 /*
2849 * Arguments to signal handler:
2850 *
2851 * a0 = signal number
02d2bd5d 2852 * a1 = pointer to siginfo_t
0b1bcb00
PB		 2853 * a2 = pointer to struct ucontext
2854 *
2855 * $25 and PC point to the signal handler, $29 points to the
2856 * struct sigframe.
2857 */
2858 env->active_tc.gpr[ 4] = sig;
2859 env->active_tc.gpr[ 5] = frame_addr
2860 + offsetof(struct target_rt_sigframe, rs_info);
2861 env->active_tc.gpr[ 6] = frame_addr
2862 + offsetof(struct target_rt_sigframe, rs_uc);
2863 env->active_tc.gpr[29] = frame_addr;
2864 env->active_tc.gpr[31] = frame_addr
2865 + offsetof(struct target_rt_sigframe, rs_code);
2866 /* The original kernel code sets CP0_EPC to the handler
2867 * since it returns to userland using eret
2868 * we cannot do this here, and we must set PC directly */
2869 env->active_tc.PC = env->active_tc.gpr[25] = ka->_sa_handler;
2870 unlock_user_struct(frame, frame_addr, 1);
2871 return;
2872
2873give_sigsegv:
2874 unlock_user_struct(frame, frame_addr, 1);
2875 force_sig(TARGET_SIGSEGV/*, current*/);
2876 return;
106ec879
FB		 2877}
2878
05390248 2879long do_rt_sigreturn(CPUMIPSState *env)
106ec879 2880{
0b1bcb00
PB		 2881 struct target_rt_sigframe *frame;
2882 abi_ulong frame_addr;
2883 sigset_t blocked;
2884
2885#if defined(DEBUG_SIGNAL)
2886 fprintf(stderr, "do_rt_sigreturn\n");
2887#endif
2888 frame_addr = env->active_tc.gpr[29];
2889 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
2890 goto badframe;
2891
60e99246 2892 target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
0b1bcb00
PB		 2893 sigprocmask(SIG_SETMASK, &blocked, NULL);
2894
60e99246 2895 if (restore_sigcontext(env, &frame->rs_uc.tuc_mcontext))
0b1bcb00
PB		 2896 goto badframe;
2897
2898 if (do_sigaltstack(frame_addr +
60e99246 2899 offsetof(struct target_rt_sigframe, rs_uc.tuc_stack),
0b1bcb00
PB		 2900 0, get_sp_from_cpustate(env)) == -EFAULT)
2901 goto badframe;
2902
2903 env->active_tc.PC = env->CP0_EPC;
2904 /* I am not sure this is right, but it seems to work
2905 * maybe a problem with nested signals ? */
2906 env->CP0_EPC = 0;
2907 return -TARGET_QEMU_ESIGRETURN;
2908
2909badframe:
2910 force_sig(TARGET_SIGSEGV/*, current*/);
2911 return 0;
106ec879 2912}
6d5e216d 2913
c3b5bc8a
TS		 2914#elif defined(TARGET_SH4)
2915
2916/*
2917 * code and data structures from linux kernel:
2918 * include/asm-sh/sigcontext.h
2919 * arch/sh/kernel/signal.c
2920 */
2921
2922struct target_sigcontext {
2923 target_ulong oldmask;
2924
2925 /* CPU registers */
2926 target_ulong sc_gregs[16];
2927 target_ulong sc_pc;
2928 target_ulong sc_pr;
2929 target_ulong sc_sr;
2930 target_ulong sc_gbr;
2931 target_ulong sc_mach;
2932 target_ulong sc_macl;
2933
2934 /* FPU registers */
2935 target_ulong sc_fpregs[16];
2936 target_ulong sc_xfpregs[16];
2937 unsigned int sc_fpscr;
2938 unsigned int sc_fpul;
2939 unsigned int sc_ownedfp;
2940};
2941
2942struct target_sigframe
2943{
2944 struct target_sigcontext sc;
2945 target_ulong extramask[TARGET_NSIG_WORDS-1];
2946 uint16_t retcode[3];
2947};
2948
2949
2950struct target_ucontext {
60e99246
AJ		 2951 target_ulong tuc_flags;
2952 struct target_ucontext *tuc_link;
2953 target_stack_t tuc_stack;
2954 struct target_sigcontext tuc_mcontext;
2955 target_sigset_t tuc_sigmask; /* mask last for extensibility */
c3b5bc8a
TS		 2956};
2957
2958struct target_rt_sigframe
2959{
2960 struct target_siginfo info;
2961 struct target_ucontext uc;
2962 uint16_t retcode[3];
2963};
2964
2965
2966#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
2967#define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
2968
624f7979 2969static abi_ulong get_sigframe(struct target_sigaction *ka,
c3b5bc8a
TS		 2970 unsigned long sp, size_t frame_size)
2971{
624f7979 2972 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags(sp) == 0)) {
c3b5bc8a
TS		 2973 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
2974 }
2975
2976 return (sp - frame_size) & -8ul;
2977}
2978
2979static int setup_sigcontext(struct target_sigcontext *sc,
05390248 2980 CPUSH4State *regs, unsigned long mask)
c3b5bc8a
TS		 2981{
2982 int err = 0;
d8714436 2983 int i;
c3b5bc8a
TS		 2984
2985#define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
2986 COPY(gregs[0]); COPY(gregs[1]);
2987 COPY(gregs[2]); COPY(gregs[3]);
2988 COPY(gregs[4]); COPY(gregs[5]);
2989 COPY(gregs[6]); COPY(gregs[7]);
2990 COPY(gregs[8]); COPY(gregs[9]);
2991 COPY(gregs[10]); COPY(gregs[11]);
2992 COPY(gregs[12]); COPY(gregs[13]);
2993 COPY(gregs[14]); COPY(gregs[15]);
2994 COPY(gbr); COPY(mach);
2995 COPY(macl); COPY(pr);
2996 COPY(sr); COPY(pc);
2997#undef COPY
2998
d8714436 2999 for (i=0; i<16; i++) {
3000 err |= __put_user(regs->fregs[i], &sc->sc_fpregs[i]);
3001 }
3002 err |= __put_user(regs->fpscr, &sc->sc_fpscr);
3003 err |= __put_user(regs->fpul, &sc->sc_fpul);
c3b5bc8a
TS		 3004
3005 /* non-iBCS2 extensions.. */
3006 err |= __put_user(mask, &sc->oldmask);
3007
3008 return err;
3009}
3010
05390248 3011static int restore_sigcontext(CPUSH4State *regs, struct target_sigcontext *sc,
d8714436 3012 target_ulong *r0_p)
c3b5bc8a
TS		 3013{
3014 unsigned int err = 0;
d8714436 3015 int i;
c3b5bc8a
TS		 3016
3017#define COPY(x) err |= __get_user(regs->x, &sc->sc_##x)
3018 COPY(gregs[1]);
3019 COPY(gregs[2]); COPY(gregs[3]);
3020 COPY(gregs[4]); COPY(gregs[5]);
3021 COPY(gregs[6]); COPY(gregs[7]);
3022 COPY(gregs[8]); COPY(gregs[9]);
3023 COPY(gregs[10]); COPY(gregs[11]);
3024 COPY(gregs[12]); COPY(gregs[13]);
3025 COPY(gregs[14]); COPY(gregs[15]);
3026 COPY(gbr); COPY(mach);
3027 COPY(macl); COPY(pr);
3028 COPY(sr); COPY(pc);
3029#undef COPY
3030
d8714436 3031 for (i=0; i<16; i++) {
3032 err |= __get_user(regs->fregs[i], &sc->sc_fpregs[i]);
3033 }
3034 err |= __get_user(regs->fpscr, &sc->sc_fpscr);
3035 err |= __get_user(regs->fpul, &sc->sc_fpul);
c3b5bc8a
TS		 3036
3037 regs->tra = -1; /* disable syscall checks */
d8714436 3038 err |= __get_user(*r0_p, &sc->sc_gregs[0]);
c3b5bc8a
TS		 3039 return err;
3040}
3041
624f7979 3042static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3043 target_sigset_t *set, CPUSH4State *regs)
c3b5bc8a
TS		 3044{
3045 struct target_sigframe *frame;
3046 abi_ulong frame_addr;
3047 int i;
3048 int err = 0;
3049 int signal;
3050
3051 frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
3052 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3053 goto give_sigsegv;
3054
3055 signal = current_exec_domain_sig(sig);
3056
3057 err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
3058
3059 for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
3060 err |= __put_user(set->sig[i + 1], &frame->extramask[i]);
3061 }
3062
3063 /* Set up to return from userspace. If provided, use a stub
3064 already in userspace. */
624f7979
PB		 3065 if (ka->sa_flags & TARGET_SA_RESTORER) {
3066 regs->pr = (unsigned long) ka->sa_restorer;
c3b5bc8a
TS		 3067 } else {
3068 /* Generate return code (system call to sigreturn) */
3069 err |= __put_user(MOVW(2), &frame->retcode[0]);
3070 err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
3071 err |= __put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
3072 regs->pr = (unsigned long) frame->retcode;
3073 }
3074
3075 if (err)
3076 goto give_sigsegv;
3077
3078 /* Set up registers for signal handler */
cb9c6268 3079 regs->gregs[15] = frame_addr;
c3b5bc8a
TS		 3080 regs->gregs[4] = signal; /* Arg for signal handler */
3081 regs->gregs[5] = 0;
cb9c6268 3082 regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
624f7979 3083 regs->pc = (unsigned long) ka->_sa_handler;
c3b5bc8a
TS		 3084
3085 unlock_user_struct(frame, frame_addr, 1);
3086 return;
3087
3088give_sigsegv:
3089 unlock_user_struct(frame, frame_addr, 1);
66393fb9 3090 force_sig(TARGET_SIGSEGV);
c3b5bc8a
TS		 3091}
3092
624f7979 3093static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3094 target_siginfo_t *info,
05390248 3095 target_sigset_t *set, CPUSH4State *regs)
c3b5bc8a
TS		 3096{
3097 struct target_rt_sigframe *frame;
3098 abi_ulong frame_addr;
3099 int i;
3100 int err = 0;
3101 int signal;
3102
3103 frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
3104 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3105 goto give_sigsegv;
3106
3107 signal = current_exec_domain_sig(sig);
3108
3109 err |= copy_siginfo_to_user(&frame->info, info);
3110
3111 /* Create the ucontext. */
60e99246
AJ		 3112 err |= __put_user(0, &frame->uc.tuc_flags);
3113 err |= __put_user(0, (unsigned long *)&frame->uc.tuc_link);
526ccb7a 3114 err |= __put_user((unsigned long)target_sigaltstack_used.ss_sp,
60e99246 3115 &frame->uc.tuc_stack.ss_sp);
c3b5bc8a 3116 err |= __put_user(sas_ss_flags(regs->gregs[15]),
60e99246 3117 &frame->uc.tuc_stack.ss_flags);
c3b5bc8a 3118 err |= __put_user(target_sigaltstack_used.ss_size,
60e99246
AJ		 3119 &frame->uc.tuc_stack.ss_size);
3120 err |= setup_sigcontext(&frame->uc.tuc_mcontext,
c3b5bc8a
TS		 3121 regs, set->sig[0]);
3122 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
60e99246 3123 err |= __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
c3b5bc8a
TS		 3124 }
3125
3126 /* Set up to return from userspace. If provided, use a stub
3127 already in userspace. */
624f7979
PB		 3128 if (ka->sa_flags & TARGET_SA_RESTORER) {
3129 regs->pr = (unsigned long) ka->sa_restorer;
c3b5bc8a
TS		 3130 } else {
3131 /* Generate return code (system call to sigreturn) */
3132 err |= __put_user(MOVW(2), &frame->retcode[0]);
3133 err |= __put_user(TRAP_NOARG, &frame->retcode[1]);
3134 err |= __put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
3135 regs->pr = (unsigned long) frame->retcode;
3136 }
3137
3138 if (err)
3139 goto give_sigsegv;
3140
3141 /* Set up registers for signal handler */
cb9c6268 3142 regs->gregs[15] = frame_addr;
c3b5bc8a 3143 regs->gregs[4] = signal; /* Arg for signal handler */
cb9c6268
EI		 3144 regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
3145 regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
624f7979 3146 regs->pc = (unsigned long) ka->_sa_handler;
c3b5bc8a
TS		 3147
3148 unlock_user_struct(frame, frame_addr, 1);
3149 return;
3150
3151give_sigsegv:
3152 unlock_user_struct(frame, frame_addr, 1);
66393fb9 3153 force_sig(TARGET_SIGSEGV);
c3b5bc8a
TS		 3154}
3155
05390248 3156long do_sigreturn(CPUSH4State *regs)
c3b5bc8a
TS		 3157{
3158 struct target_sigframe *frame;
3159 abi_ulong frame_addr;
3160 sigset_t blocked;
c227f099 3161 target_sigset_t target_set;
d8714436 3162 target_ulong r0;
c3b5bc8a
TS		 3163 int i;
3164 int err = 0;
3165
3166#if defined(DEBUG_SIGNAL)
3167 fprintf(stderr, "do_sigreturn\n");
3168#endif
3169 frame_addr = regs->gregs[15];
3170 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3171 goto badframe;
3172
3173 err |= __get_user(target_set.sig[0], &frame->sc.oldmask);
3174 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3175 err |= (__get_user(target_set.sig[i], &frame->extramask[i - 1]));
3176 }
3177
3178 if (err)
3179 goto badframe;
3180
3181 target_to_host_sigset_internal(&blocked, &target_set);
3182 sigprocmask(SIG_SETMASK, &blocked, NULL);
3183
d8714436 3184 if (restore_sigcontext(regs, &frame->sc, &r0))
c3b5bc8a
TS		 3185 goto badframe;
3186
3187 unlock_user_struct(frame, frame_addr, 0);
d8714436 3188 return r0;
c3b5bc8a
TS		 3189
3190badframe:
3191 unlock_user_struct(frame, frame_addr, 0);
3192 force_sig(TARGET_SIGSEGV);
3193 return 0;
3194}
3195
05390248 3196long do_rt_sigreturn(CPUSH4State *regs)
c3b5bc8a
TS		 3197{
3198 struct target_rt_sigframe *frame;
3199 abi_ulong frame_addr;
3200 sigset_t blocked;
d8714436 3201 target_ulong r0;
c3b5bc8a
TS		 3202
3203#if defined(DEBUG_SIGNAL)
3204 fprintf(stderr, "do_rt_sigreturn\n");
3205#endif
3206 frame_addr = regs->gregs[15];
3207 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
3208 goto badframe;
3209
60e99246 3210 target_to_host_sigset(&blocked, &frame->uc.tuc_sigmask);
c3b5bc8a
TS		 3211 sigprocmask(SIG_SETMASK, &blocked, NULL);
3212
60e99246 3213 if (restore_sigcontext(regs, &frame->uc.tuc_mcontext, &r0))
c3b5bc8a
TS		 3214 goto badframe;
3215
3216 if (do_sigaltstack(frame_addr +
60e99246 3217 offsetof(struct target_rt_sigframe, uc.tuc_stack),
c3b5bc8a
TS		 3218 0, get_sp_from_cpustate(regs)) == -EFAULT)
3219 goto badframe;
3220
3221 unlock_user_struct(frame, frame_addr, 0);
d8714436 3222 return r0;
c3b5bc8a
TS		 3223
3224badframe:
3225 unlock_user_struct(frame, frame_addr, 0);
3226 force_sig(TARGET_SIGSEGV);
3227 return 0;
3228}
b779e29e
EI		 3229#elif defined(TARGET_MICROBLAZE)
3230
3231struct target_sigcontext {
3232 struct target_pt_regs regs; /* needs to be first */
3233 uint32_t oldmask;
3234};
3235
b2178704
EI		 3236struct target_stack_t {
3237 abi_ulong ss_sp;
3238 int ss_flags;
3239 unsigned int ss_size;
3240};
3241
3242struct target_ucontext {
f711df67
RH		 3243 abi_ulong tuc_flags;
3244 abi_ulong tuc_link;
3245 struct target_stack_t tuc_stack;
3246 struct target_sigcontext tuc_mcontext;
3247 uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
b2178704
EI		 3248};
3249
b779e29e
EI		 3250/* Signal frames. */
3251struct target_signal_frame {
b2178704 3252 struct target_ucontext uc;
b779e29e
EI		 3253 uint32_t extramask[TARGET_NSIG_WORDS - 1];
3254 uint32_t tramp[2];
3255};
3256
3257struct rt_signal_frame {
02d2bd5d 3258 siginfo_t info;
b779e29e
EI		 3259 struct ucontext uc;
3260 uint32_t tramp[2];
3261};
3262
05390248 3263static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
b779e29e
EI		 3264{
3265 __put_user(env->regs[0], &sc->regs.r0);
3266 __put_user(env->regs[1], &sc->regs.r1);
3267 __put_user(env->regs[2], &sc->regs.r2);
3268 __put_user(env->regs[3], &sc->regs.r3);
3269 __put_user(env->regs[4], &sc->regs.r4);
3270 __put_user(env->regs[5], &sc->regs.r5);
3271 __put_user(env->regs[6], &sc->regs.r6);
3272 __put_user(env->regs[7], &sc->regs.r7);
3273 __put_user(env->regs[8], &sc->regs.r8);
3274 __put_user(env->regs[9], &sc->regs.r9);
3275 __put_user(env->regs[10], &sc->regs.r10);
3276 __put_user(env->regs[11], &sc->regs.r11);
3277 __put_user(env->regs[12], &sc->regs.r12);
3278 __put_user(env->regs[13], &sc->regs.r13);
3279 __put_user(env->regs[14], &sc->regs.r14);
3280 __put_user(env->regs[15], &sc->regs.r15);
3281 __put_user(env->regs[16], &sc->regs.r16);
3282 __put_user(env->regs[17], &sc->regs.r17);
3283 __put_user(env->regs[18], &sc->regs.r18);
3284 __put_user(env->regs[19], &sc->regs.r19);
3285 __put_user(env->regs[20], &sc->regs.r20);
3286 __put_user(env->regs[21], &sc->regs.r21);
3287 __put_user(env->regs[22], &sc->regs.r22);
3288 __put_user(env->regs[23], &sc->regs.r23);
3289 __put_user(env->regs[24], &sc->regs.r24);
3290 __put_user(env->regs[25], &sc->regs.r25);
3291 __put_user(env->regs[26], &sc->regs.r26);
3292 __put_user(env->regs[27], &sc->regs.r27);
3293 __put_user(env->regs[28], &sc->regs.r28);
3294 __put_user(env->regs[29], &sc->regs.r29);
3295 __put_user(env->regs[30], &sc->regs.r30);
3296 __put_user(env->regs[31], &sc->regs.r31);
3297 __put_user(env->sregs[SR_PC], &sc->regs.pc);
3298}
3299
05390248 3300static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
b779e29e
EI		 3301{
3302 __get_user(env->regs[0], &sc->regs.r0);
3303 __get_user(env->regs[1], &sc->regs.r1);
3304 __get_user(env->regs[2], &sc->regs.r2);
3305 __get_user(env->regs[3], &sc->regs.r3);
3306 __get_user(env->regs[4], &sc->regs.r4);
3307 __get_user(env->regs[5], &sc->regs.r5);
3308 __get_user(env->regs[6], &sc->regs.r6);
3309 __get_user(env->regs[7], &sc->regs.r7);
3310 __get_user(env->regs[8], &sc->regs.r8);
3311 __get_user(env->regs[9], &sc->regs.r9);
3312 __get_user(env->regs[10], &sc->regs.r10);
3313 __get_user(env->regs[11], &sc->regs.r11);
3314 __get_user(env->regs[12], &sc->regs.r12);
3315 __get_user(env->regs[13], &sc->regs.r13);
3316 __get_user(env->regs[14], &sc->regs.r14);
3317 __get_user(env->regs[15], &sc->regs.r15);
3318 __get_user(env->regs[16], &sc->regs.r16);
3319 __get_user(env->regs[17], &sc->regs.r17);
3320 __get_user(env->regs[18], &sc->regs.r18);
3321 __get_user(env->regs[19], &sc->regs.r19);
3322 __get_user(env->regs[20], &sc->regs.r20);
3323 __get_user(env->regs[21], &sc->regs.r21);
3324 __get_user(env->regs[22], &sc->regs.r22);
3325 __get_user(env->regs[23], &sc->regs.r23);
3326 __get_user(env->regs[24], &sc->regs.r24);
3327 __get_user(env->regs[25], &sc->regs.r25);
3328 __get_user(env->regs[26], &sc->regs.r26);
3329 __get_user(env->regs[27], &sc->regs.r27);
3330 __get_user(env->regs[28], &sc->regs.r28);
3331 __get_user(env->regs[29], &sc->regs.r29);
3332 __get_user(env->regs[30], &sc->regs.r30);
3333 __get_user(env->regs[31], &sc->regs.r31);
3334 __get_user(env->sregs[SR_PC], &sc->regs.pc);
3335}
3336
3337static abi_ulong get_sigframe(struct target_sigaction *ka,
05390248 3338 CPUMBState *env, int frame_size)
b779e29e
EI		 3339{
3340 abi_ulong sp = env->regs[1];
3341
3342 if ((ka->sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp))
3343 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
3344
3345 return ((sp - frame_size) & -8UL);
3346}
3347
3348static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3349 target_sigset_t *set, CPUMBState *env)
b779e29e
EI		 3350{
3351 struct target_signal_frame *frame;
3352 abi_ulong frame_addr;
3353 int err = 0;
3354 int i;
3355
3356 frame_addr = get_sigframe(ka, env, sizeof *frame);
3357 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
3358 goto badframe;
3359
3360 /* Save the mask. */
f711df67 3361 err |= __put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
b779e29e
EI		 3362 if (err)
3363 goto badframe;
3364
3365 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3366 if (__put_user(set->sig[i], &frame->extramask[i - 1]))
3367 goto badframe;
3368 }
3369
f711df67 3370 setup_sigcontext(&frame->uc.tuc_mcontext, env);
b779e29e
EI		 3371
3372 /* Set up to return from userspace. If provided, use a stub
3373 already in userspace. */
3374 /* minus 8 is offset to cater for "rtsd r15,8" offset */
3375 if (ka->sa_flags & TARGET_SA_RESTORER) {
3376 env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
3377 } else {
3378 uint32_t t;
3379 /* Note, these encodings are _big endian_! */
3380 /* addi r12, r0, __NR_sigreturn */
3381 t = 0x31800000UL | TARGET_NR_sigreturn;
3382 err |= __put_user(t, frame->tramp + 0);
3383 /* brki r14, 0x8 */
3384 t = 0xb9cc0008UL;
3385 err |= __put_user(t, frame->tramp + 1);
3386
3387 /* Return from sighandler will jump to the tramp.
3388 Negative 8 offset because return is rtsd r15, 8 */
3389 env->regs[15] = ((unsigned long)frame->tramp) - 8;
3390 }
3391
3392 if (err)
3393 goto badframe;
3394
3395 /* Set up registers for signal handler */
cb9c6268 3396 env->regs[1] = frame_addr;
b779e29e
EI		 3397 /* Signal handler args: */
3398 env->regs[5] = sig; /* Arg 0: signum */
187b4e08 3399 env->regs[6] = 0;
cb9c6268
EI		 3400 /* arg 1: sigcontext */
3401 env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
b779e29e
EI		 3402
3403 /* Offset of 4 to handle microblaze rtid r14, 0 */
3404 env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
3405
3406 unlock_user_struct(frame, frame_addr, 1);
3407 return;
3408 badframe:
3409 unlock_user_struct(frame, frame_addr, 1);
3410 force_sig(TARGET_SIGSEGV);
3411}
3412
3413static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3414 target_siginfo_t *info,
05390248 3415 target_sigset_t *set, CPUMBState *env)
b779e29e
EI		 3416{
3417 fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
3418}
3419
05390248 3420long do_sigreturn(CPUMBState *env)
b779e29e
EI		 3421{
3422 struct target_signal_frame *frame;
3423 abi_ulong frame_addr;
c227f099 3424 target_sigset_t target_set;
b779e29e
EI		 3425 sigset_t set;
3426 int i;
3427
3428 frame_addr = env->regs[R_SP];
3429 /* Make sure the guest isn't playing games. */
3430 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
3431 goto badframe;
3432
3433 /* Restore blocked signals */
f711df67 3434 if (__get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask))
b779e29e
EI		 3435 goto badframe;
3436 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3437 if (__get_user(target_set.sig[i], &frame->extramask[i - 1]))
3438 goto badframe;
3439 }
3440 target_to_host_sigset_internal(&set, &target_set);
3441 sigprocmask(SIG_SETMASK, &set, NULL);
3442
f711df67 3443 restore_sigcontext(&frame->uc.tuc_mcontext, env);
b779e29e
EI		 3444 /* We got here through a sigreturn syscall, our path back is via an
3445 rtb insn so setup r14 for that. */
3446 env->regs[14] = env->sregs[SR_PC];
3447
3448 unlock_user_struct(frame, frame_addr, 0);
3449 return env->regs[10];
3450 badframe:
3451 unlock_user_struct(frame, frame_addr, 0);
3452 force_sig(TARGET_SIGSEGV);
3453}
3454
05390248 3455long do_rt_sigreturn(CPUMBState *env)
b779e29e
EI		 3456{
3457 fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
3458 return -TARGET_ENOSYS;
3459}
3460
b6d3abda
EI		 3461#elif defined(TARGET_CRIS)
3462
3463struct target_sigcontext {
3464 struct target_pt_regs regs; /* needs to be first */
3465 uint32_t oldmask;
3466 uint32_t usp; /* usp before stacking this gunk on it */
3467};
3468
3469/* Signal frames. */
3470struct target_signal_frame {
3471 struct target_sigcontext sc;
3472 uint32_t extramask[TARGET_NSIG_WORDS - 1];
3473 uint8_t retcode[8]; /* Trampoline code. */
3474};
3475
3476struct rt_signal_frame {
02d2bd5d 3477 siginfo_t *pinfo;
b6d3abda 3478 void *puc;
02d2bd5d 3479 siginfo_t info;
b6d3abda
EI		 3480 struct ucontext uc;
3481 uint8_t retcode[8]; /* Trampoline code. */
3482};
3483
05390248 3484static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
b6d3abda 3485{
9664d928
EI		 3486 __put_user(env->regs[0], &sc->regs.r0);
3487 __put_user(env->regs[1], &sc->regs.r1);
3488 __put_user(env->regs[2], &sc->regs.r2);
3489 __put_user(env->regs[3], &sc->regs.r3);
3490 __put_user(env->regs[4], &sc->regs.r4);
3491 __put_user(env->regs[5], &sc->regs.r5);
3492 __put_user(env->regs[6], &sc->regs.r6);
3493 __put_user(env->regs[7], &sc->regs.r7);
3494 __put_user(env->regs[8], &sc->regs.r8);
3495 __put_user(env->regs[9], &sc->regs.r9);
3496 __put_user(env->regs[10], &sc->regs.r10);
3497 __put_user(env->regs[11], &sc->regs.r11);
3498 __put_user(env->regs[12], &sc->regs.r12);
3499 __put_user(env->regs[13], &sc->regs.r13);
3500 __put_user(env->regs[14], &sc->usp);
3501 __put_user(env->regs[15], &sc->regs.acr);
3502 __put_user(env->pregs[PR_MOF], &sc->regs.mof);
3503 __put_user(env->pregs[PR_SRP], &sc->regs.srp);
3504 __put_user(env->pc, &sc->regs.erp);
b6d3abda 3505}
9664d928 3506
05390248 3507static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
b6d3abda 3508{
9664d928
EI		 3509 __get_user(env->regs[0], &sc->regs.r0);
3510 __get_user(env->regs[1], &sc->regs.r1);
3511 __get_user(env->regs[2], &sc->regs.r2);
3512 __get_user(env->regs[3], &sc->regs.r3);
3513 __get_user(env->regs[4], &sc->regs.r4);
3514 __get_user(env->regs[5], &sc->regs.r5);
3515 __get_user(env->regs[6], &sc->regs.r6);
3516 __get_user(env->regs[7], &sc->regs.r7);
3517 __get_user(env->regs[8], &sc->regs.r8);
3518 __get_user(env->regs[9], &sc->regs.r9);
3519 __get_user(env->regs[10], &sc->regs.r10);
3520 __get_user(env->regs[11], &sc->regs.r11);
3521 __get_user(env->regs[12], &sc->regs.r12);
3522 __get_user(env->regs[13], &sc->regs.r13);
3523 __get_user(env->regs[14], &sc->usp);
3524 __get_user(env->regs[15], &sc->regs.acr);
3525 __get_user(env->pregs[PR_MOF], &sc->regs.mof);
3526 __get_user(env->pregs[PR_SRP], &sc->regs.srp);
3527 __get_user(env->pc, &sc->regs.erp);
3528}
3529
05390248 3530static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
9664d928
EI		 3531{
3532 abi_ulong sp;
b6d3abda 3533 /* Align the stack downwards to 4. */
9664d928
EI		 3534 sp = (env->regs[R_SP] & ~3);
3535 return sp - framesize;
b6d3abda
EI		 3536}
3537
624f7979 3538static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3539 target_sigset_t *set, CPUCRISState *env)
b6d3abda
EI		 3540{
3541 struct target_signal_frame *frame;
9664d928 3542 abi_ulong frame_addr;
b6d3abda
EI		 3543 int err = 0;
3544 int i;
b6d3abda 3545
9664d928
EI		 3546 frame_addr = get_sigframe(env, sizeof *frame);
3547 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
b6d3abda
EI		 3548 goto badframe;
3549
3550 /*
3551 * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
3552 * use this trampoline anymore but it sets it up for GDB.
3553 * In QEMU, using the trampoline simplifies things a bit so we use it.
3554 *
3555 * This is movu.w __NR_sigreturn, r9; break 13;
3556 */
3557 err |= __put_user(0x9c5f, frame->retcode+0);
3558 err |= __put_user(TARGET_NR_sigreturn,
3559 frame->retcode+2);
3560 err |= __put_user(0xe93d, frame->retcode+4);
3561
3562 /* Save the mask. */
3563 err |= __put_user(set->sig[0], &frame->sc.oldmask);
3564 if (err)
3565 goto badframe;
3566
3567 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3568 if (__put_user(set->sig[i], &frame->extramask[i - 1]))
3569 goto badframe;
3570 }
3571
3572 setup_sigcontext(&frame->sc, env);
3573
3574 /* Move the stack and setup the arguments for the handler. */
cb9c6268 3575 env->regs[R_SP] = frame_addr;
b6d3abda 3576 env->regs[10] = sig;
624f7979 3577 env->pc = (unsigned long) ka->_sa_handler;
b6d3abda 3578 /* Link SRP so the guest returns through the trampoline. */
cb9c6268 3579 env->pregs[PR_SRP] = frame_addr + offsetof(typeof(*frame), retcode);
b6d3abda 3580
9664d928 3581 unlock_user_struct(frame, frame_addr, 1);
b6d3abda
EI		 3582 return;
3583 badframe:
9664d928 3584 unlock_user_struct(frame, frame_addr, 1);
b6d3abda
EI		 3585 force_sig(TARGET_SIGSEGV);
3586}
3587
624f7979 3588static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 3589 target_siginfo_t *info,
05390248 3590 target_sigset_t *set, CPUCRISState *env)
b6d3abda
EI		 3591{
3592 fprintf(stderr, "CRIS setup_rt_frame: not implemented\n");
3593}
3594
05390248 3595long do_sigreturn(CPUCRISState *env)
b6d3abda
EI		 3596{
3597 struct target_signal_frame *frame;
9664d928 3598 abi_ulong frame_addr;
c227f099 3599 target_sigset_t target_set;
b6d3abda
EI		 3600 sigset_t set;
3601 int i;
3602
9664d928 3603 frame_addr = env->regs[R_SP];
b6d3abda 3604 /* Make sure the guest isn't playing games. */
9664d928 3605 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
b6d3abda
EI		 3606 goto badframe;
3607
3608 /* Restore blocked signals */
3609 if (__get_user(target_set.sig[0], &frame->sc.oldmask))
3610 goto badframe;
3611 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
3612 if (__get_user(target_set.sig[i], &frame->extramask[i - 1]))
3613 goto badframe;
3614 }
3615 target_to_host_sigset_internal(&set, &target_set);
3616 sigprocmask(SIG_SETMASK, &set, NULL);
3617
3618 restore_sigcontext(&frame->sc, env);
9664d928 3619 unlock_user_struct(frame, frame_addr, 0);
b6d3abda
EI		 3620 return env->regs[10];
3621 badframe:
9664d928 3622 unlock_user_struct(frame, frame_addr, 0);
b6d3abda
EI		 3623 force_sig(TARGET_SIGSEGV);
3624}
3625
05390248 3626long do_rt_sigreturn(CPUCRISState *env)
b6d3abda
EI		 3627{
3628 fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
3629 return -TARGET_ENOSYS;
3630}
c3b5bc8a 3631
d962783e
JL		 3632#elif defined(TARGET_OPENRISC)
3633
3634struct target_sigcontext {
3635 struct target_pt_regs regs;
3636 abi_ulong oldmask;
3637 abi_ulong usp;
3638};
3639
3640struct target_ucontext {
3641 abi_ulong tuc_flags;
3642 abi_ulong tuc_link;
3643 target_stack_t tuc_stack;
3644 struct target_sigcontext tuc_mcontext;
3645 target_sigset_t tuc_sigmask; /* mask last for extensibility */
3646};
3647
3648struct target_rt_sigframe {
3649 abi_ulong pinfo;
3650 uint64_t puc;
3651 struct target_siginfo info;
3652 struct target_sigcontext sc;
3653 struct target_ucontext uc;
3654 unsigned char retcode[16]; /* trampoline code */
3655};
3656
3657/* This is the asm-generic/ucontext.h version */
3658#if 0
3659static int restore_sigcontext(CPUOpenRISCState *regs,
3660 struct target_sigcontext *sc)
3661{
3662 unsigned int err = 0;
3663 unsigned long old_usp;
3664
3665 /* Alwys make any pending restarted system call return -EINTR */
3666 current_thread_info()->restart_block.fn = do_no_restart_syscall;
3667
3668 /* restore the regs from &sc->regs (same as sc, since regs is first)
3669 * (sc is already checked for VERIFY_READ since the sigframe was
3670 * checked in sys_sigreturn previously)
3671 */
3672
3673 if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) {
3674 goto badframe;
3675 }
3676
3677 /* make sure the U-flag is set so user-mode cannot fool us */
3678
3679 regs->sr &= ~SR_SM;
3680
3681 /* restore the old USP as it was before we stacked the sc etc.
3682 * (we cannot just pop the sigcontext since we aligned the sp and
3683 * stuff after pushing it)
3684 */
3685
3686 err |= __get_user(old_usp, &sc->usp);
3687 phx_signal("old_usp 0x%lx", old_usp);
3688
3689 __PHX__ REALLY /* ??? */
3690 wrusp(old_usp);
3691 regs->gpr[1] = old_usp;
3692
3693 /* TODO: the other ports use regs->orig_XX to disable syscall checks
3694 * after this completes, but we don't use that mechanism. maybe we can
3695 * use it now ?
3696 */
3697
3698 return err;
3699
3700badframe:
3701 return 1;
3702}
3703#endif
3704
3705/* Set up a signal frame. */
3706
3707static int setup_sigcontext(struct target_sigcontext *sc,
3708 CPUOpenRISCState *regs,
3709 unsigned long mask)
3710{
3711 int err = 0;
3712 unsigned long usp = regs->gpr[1];
3713
3714 /* copy the regs. they are first in sc so we can use sc directly */
3715
3716 /*err |= copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/
3717
3718 /* Set the frametype to CRIS_FRAME_NORMAL for the execution of
3719 the signal handler. The frametype will be restored to its previous
3720 value in restore_sigcontext. */
3721 /*regs->frametype = CRIS_FRAME_NORMAL;*/
3722
3723 /* then some other stuff */
3724 err |= __put_user(mask, &sc->oldmask);
3725 err |= __put_user(usp, &sc->usp); return err;
3726}
3727
3728static inline unsigned long align_sigframe(unsigned long sp)
3729{
3730 unsigned long i;
3731 i = sp & ~3UL;
3732 return i;
3733}
3734
3735static inline abi_ulong get_sigframe(struct target_sigaction *ka,
3736 CPUOpenRISCState *regs,
3737 size_t frame_size)
3738{
3739 unsigned long sp = regs->gpr[1];
3740 int onsigstack = on_sig_stack(sp);
3741
3742 /* redzone */
3743 /* This is the X/Open sanctioned signal stack switching. */
3744 if ((ka->sa_flags & SA_ONSTACK) != 0 && !onsigstack) {
3745 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
3746 }
3747
3748 sp = align_sigframe(sp - frame_size);
3749
3750 /*
3751 * If we are on the alternate signal stack and would overflow it, don't.
3752 * Return an always-bogus address instead so we will die with SIGSEGV.
3753 */
3754
3755 if (onsigstack && !likely(on_sig_stack(sp))) {
3756 return -1L;
3757 }
3758
3759 return sp;
3760}
3761
3762static void setup_frame(int sig, struct target_sigaction *ka,
3763 target_sigset_t *set, CPUOpenRISCState *env)
3764{
3765 qemu_log("Not implement.\n");
3766}
3767
3768static void setup_rt_frame(int sig, struct target_sigaction *ka,
3769 target_siginfo_t *info,
3770 target_sigset_t *set, CPUOpenRISCState *env)
3771{
3772 int err = 0;
3773 abi_ulong frame_addr;
3774 unsigned long return_ip;
3775 struct target_rt_sigframe *frame;
3776 abi_ulong info_addr, uc_addr;
3777
3778 frame_addr = get_sigframe(ka, env, sizeof *frame);
3779
3780 frame_addr = get_sigframe(ka, env, sizeof(*frame));
3781 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
3782 goto give_sigsegv;
3783 }
3784
3785 info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
3786 err |= __put_user(info_addr, &frame->pinfo);
3787 uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
3788 err |= __put_user(uc_addr, &frame->puc);
3789
3790 if (ka->sa_flags & SA_SIGINFO) {
3791 err |= copy_siginfo_to_user(&frame->info, info);
3792 }
3793 if (err) {
3794 goto give_sigsegv;
3795 }
3796
3797 /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/
3798 err |= __put_user(0, &frame->uc.tuc_flags);
3799 err |= __put_user(0, &frame->uc.tuc_link);
3800 err |= __put_user(target_sigaltstack_used.ss_sp,
3801 &frame->uc.tuc_stack.ss_sp);
3802 err |= __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags);
3803 err |= __put_user(target_sigaltstack_used.ss_size,
3804 &frame->uc.tuc_stack.ss_size);
3805 err |= setup_sigcontext(&frame->sc, env, set->sig[0]);
3806
3807 /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/
3808
3809 if (err) {
3810 goto give_sigsegv;
3811 }
3812
3813 /* trampoline - the desired return ip is the retcode itself */
3814 return_ip = (unsigned long)&frame->retcode;
3815 /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */
3816 err |= __put_user(0xa960, (short *)(frame->retcode + 0));
3817 err |= __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2));
3818 err |= __put_user(0x20000001, (unsigned long *)(frame->retcode + 4));
3819 err |= __put_user(0x15000000, (unsigned long *)(frame->retcode + 8));
3820
3821 if (err) {
3822 goto give_sigsegv;
3823 }
3824
3825 /* TODO what is the current->exec_domain stuff and invmap ? */
3826
3827 /* Set up registers for signal handler */
3828 env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */
3829 env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */
3830 env->gpr[3] = (unsigned long)sig; /* arg 1: signo */
3831 env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */
3832 env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */
3833
3834 /* actually move the usp to reflect the stacked frame */
3835 env->gpr[1] = (unsigned long)frame;
3836
3837 return;
3838
3839give_sigsegv:
3840 unlock_user_struct(frame, frame_addr, 1);
3841 if (sig == TARGET_SIGSEGV) {
3842 ka->_sa_handler = TARGET_SIG_DFL;
3843 }
3844 force_sig(TARGET_SIGSEGV);
3845}
3846
3847long do_sigreturn(CPUOpenRISCState *env)
3848{
3849
3850 qemu_log("do_sigreturn: not implemented\n");
3851 return -TARGET_ENOSYS;
3852}
3853
3854long do_rt_sigreturn(CPUOpenRISCState *env)
3855{
3856 qemu_log("do_rt_sigreturn: not implemented\n");
3857 return -TARGET_ENOSYS;
3858}
3859/* TARGET_OPENRISC */
3860
a4c075f1
UH		 3861#elif defined(TARGET_S390X)
3862
3863#define __NUM_GPRS 16
3864#define __NUM_FPRS 16
3865#define __NUM_ACRS 16
3866
3867#define S390_SYSCALL_SIZE 2
3868#define __SIGNAL_FRAMESIZE 160 /* FIXME: 31-bit mode -> 96 */
3869
3870#define _SIGCONTEXT_NSIG 64
3871#define _SIGCONTEXT_NSIG_BPW 64 /* FIXME: 31-bit mode -> 32 */
3872#define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW)
3873#define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS)
3874#define PSW_ADDR_AMODE 0x0000000000000000UL /* 0x80000000UL for 31-bit */
3875#define S390_SYSCALL_OPCODE ((uint16_t)0x0a00)
3876
3877typedef struct {
3878 target_psw_t psw;
3879 target_ulong gprs[__NUM_GPRS];
3880 unsigned int acrs[__NUM_ACRS];
3881} target_s390_regs_common;
3882
3883typedef struct {
3884 unsigned int fpc;
3885 double fprs[__NUM_FPRS];
3886} target_s390_fp_regs;
3887
3888typedef struct {
3889 target_s390_regs_common regs;
3890 target_s390_fp_regs fpregs;
3891} target_sigregs;
3892
3893struct target_sigcontext {
3894 target_ulong oldmask[_SIGCONTEXT_NSIG_WORDS];
3895 target_sigregs *sregs;
3896};
3897
3898typedef struct {
3899 uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
3900 struct target_sigcontext sc;
3901 target_sigregs sregs;
3902 int signo;
3903 uint8_t retcode[S390_SYSCALL_SIZE];
3904} sigframe;
3905
3906struct target_ucontext {
6fea2ea4
PM		 3907 target_ulong tuc_flags;
3908 struct target_ucontext *tuc_link;
3909 target_stack_t tuc_stack;
3910 target_sigregs tuc_mcontext;
3911 target_sigset_t tuc_sigmask; /* mask last for extensibility */
a4c075f1
UH		 3912};
3913
3914typedef struct {
3915 uint8_t callee_used_stack[__SIGNAL_FRAMESIZE];
3916 uint8_t retcode[S390_SYSCALL_SIZE];
3917 struct target_siginfo info;
3918 struct target_ucontext uc;
3919} rt_sigframe;
3920
3921static inline abi_ulong
05390248 3922get_sigframe(struct target_sigaction *ka, CPUS390XState *env, size_t frame_size)
a4c075f1
UH		 3923{
3924 abi_ulong sp;
3925
3926 /* Default to using normal stack */
3927 sp = env->regs[15];
3928
3929 /* This is the X/Open sanctioned signal stack switching. */
3930 if (ka->sa_flags & TARGET_SA_ONSTACK) {
3931 if (!sas_ss_flags(sp)) {
3932 sp = target_sigaltstack_used.ss_sp +
3933 target_sigaltstack_used.ss_size;
3934 }
3935 }
3936
3937 /* This is the legacy signal stack switching. */
3938 else if (/* FIXME !user_mode(regs) */ 0 &&
3939 !(ka->sa_flags & TARGET_SA_RESTORER) &&
3940 ka->sa_restorer) {
3941 sp = (abi_ulong) ka->sa_restorer;
3942 }
3943
3944 return (sp - frame_size) & -8ul;
3945}
3946
05390248 3947static void save_sigregs(CPUS390XState *env, target_sigregs *sregs)
a4c075f1
UH		 3948{
3949 int i;
3950 //save_access_regs(current->thread.acrs); FIXME
3951
3952 /* Copy a 'clean' PSW mask to the user to avoid leaking
3953 information about whether PER is currently on. */
3954 __put_user(env->psw.mask, &sregs->regs.psw.mask);
3955 __put_user(env->psw.addr, &sregs->regs.psw.addr);
3956 for (i = 0; i < 16; i++) {
3957 __put_user(env->regs[i], &sregs->regs.gprs[i]);
3958 }
3959 for (i = 0; i < 16; i++) {
3960 __put_user(env->aregs[i], &sregs->regs.acrs[i]);
3961 }
3962 /*
3963 * We have to store the fp registers to current->thread.fp_regs
3964 * to merge them with the emulated registers.
3965 */
3966 //save_fp_regs(&current->thread.fp_regs); FIXME
3967 for (i = 0; i < 16; i++) {
3968 __put_user(env->fregs[i].ll, &sregs->fpregs.fprs[i]);
3969 }
3970}
3971
3972static void setup_frame(int sig, struct target_sigaction *ka,
05390248 3973 target_sigset_t *set, CPUS390XState *env)
a4c075f1
UH		 3974{
3975 sigframe *frame;
3976 abi_ulong frame_addr;
3977
3978 frame_addr = get_sigframe(ka, env, sizeof(*frame));
3979 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
3980 (unsigned long long)frame_addr);
3981 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
3982 goto give_sigsegv;
3983 }
3984
3985 qemu_log("%s: 1\n", __FUNCTION__);
3986 if (__put_user(set->sig[0], &frame->sc.oldmask[0])) {
3987 goto give_sigsegv;
3988 }
3989
3990 save_sigregs(env, &frame->sregs);
3991
3992 __put_user((abi_ulong)(unsigned long)&frame->sregs,
3993 (abi_ulong *)&frame->sc.sregs);
3994
3995 /* Set up to return from userspace. If provided, use a stub
3996 already in userspace. */
3997 if (ka->sa_flags & TARGET_SA_RESTORER) {
3998 env->regs[14] = (unsigned long)
3999 ka->sa_restorer | PSW_ADDR_AMODE;
4000 } else {
4001 env->regs[14] = (unsigned long)
4002 frame->retcode | PSW_ADDR_AMODE;
4003 if (__put_user(S390_SYSCALL_OPCODE | TARGET_NR_sigreturn,
4004 (uint16_t *)(frame->retcode)))
4005 goto give_sigsegv;
4006 }
4007
4008 /* Set up backchain. */
4009 if (__put_user(env->regs[15], (abi_ulong *) frame)) {
4010 goto give_sigsegv;
4011 }
4012
4013 /* Set up registers for signal handler */
cb9c6268 4014 env->regs[15] = frame_addr;
a4c075f1
UH		 4015 env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
4016
4017 env->regs[2] = sig; //map_signal(sig);
cb9c6268 4018 env->regs[3] = frame_addr += offsetof(typeof(*frame), sc);
a4c075f1
UH		 4019
4020 /* We forgot to include these in the sigcontext.
4021 To avoid breaking binary compatibility, they are passed as args. */
4022 env->regs[4] = 0; // FIXME: no clue... current->thread.trap_no;
4023 env->regs[5] = 0; // FIXME: no clue... current->thread.prot_addr;
4024
4025 /* Place signal number on stack to allow backtrace from handler. */
4026 if (__put_user(env->regs[2], (int *) &frame->signo)) {
4027 goto give_sigsegv;
4028 }
4029 unlock_user_struct(frame, frame_addr, 1);
4030 return;
4031
4032give_sigsegv:
4033 qemu_log("%s: give_sigsegv\n", __FUNCTION__);
4034 unlock_user_struct(frame, frame_addr, 1);
4035 force_sig(TARGET_SIGSEGV);
4036}
4037
4038static void setup_rt_frame(int sig, struct target_sigaction *ka,
4039 target_siginfo_t *info,
05390248 4040 target_sigset_t *set, CPUS390XState *env)
a4c075f1
UH		 4041{
4042 int i;
4043 rt_sigframe *frame;
4044 abi_ulong frame_addr;
4045
4046 frame_addr = get_sigframe(ka, env, sizeof *frame);
4047 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4048 (unsigned long long)frame_addr);
4049 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
4050 goto give_sigsegv;
4051 }
4052
4053 qemu_log("%s: 1\n", __FUNCTION__);
4054 if (copy_siginfo_to_user(&frame->info, info)) {
4055 goto give_sigsegv;
4056 }
4057
4058 /* Create the ucontext. */
6fea2ea4
PM		 4059 __put_user(0, &frame->uc.tuc_flags);
4060 __put_user((abi_ulong)0, (abi_ulong *)&frame->uc.tuc_link);
4061 __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
a4c075f1 4062 __put_user(sas_ss_flags(get_sp_from_cpustate(env)),
6fea2ea4
PM		 4063 &frame->uc.tuc_stack.ss_flags);
4064 __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
4065 save_sigregs(env, &frame->uc.tuc_mcontext);
a4c075f1
UH		 4066 for (i = 0; i < TARGET_NSIG_WORDS; i++) {
4067 __put_user((abi_ulong)set->sig[i],
6fea2ea4 4068 (abi_ulong *)&frame->uc.tuc_sigmask.sig[i]);
a4c075f1
UH		 4069 }
4070
4071 /* Set up to return from userspace. If provided, use a stub
4072 already in userspace. */
4073 if (ka->sa_flags & TARGET_SA_RESTORER) {
4074 env->regs[14] = (unsigned long) ka->sa_restorer | PSW_ADDR_AMODE;
4075 } else {
4076 env->regs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE;
4077 if (__put_user(S390_SYSCALL_OPCODE | TARGET_NR_rt_sigreturn,
4078 (uint16_t *)(frame->retcode))) {
4079 goto give_sigsegv;
4080 }
4081 }
4082
4083 /* Set up backchain. */
4084 if (__put_user(env->regs[15], (abi_ulong *) frame)) {
4085 goto give_sigsegv;
4086 }
4087
4088 /* Set up registers for signal handler */
cb9c6268 4089 env->regs[15] = frame_addr;
a4c075f1
UH		 4090 env->psw.addr = (target_ulong) ka->_sa_handler | PSW_ADDR_AMODE;
4091
4092 env->regs[2] = sig; //map_signal(sig);
cb9c6268
EI		 4093 env->regs[3] = frame_addr + offsetof(typeof(*frame), info);
4094 env->regs[4] = frame_addr + offsetof(typeof(*frame), uc);
a4c075f1
UH		 4095 return;
4096
4097give_sigsegv:
4098 qemu_log("%s: give_sigsegv\n", __FUNCTION__);
4099 unlock_user_struct(frame, frame_addr, 1);
4100 force_sig(TARGET_SIGSEGV);
4101}
4102
4103static int
05390248 4104restore_sigregs(CPUS390XState *env, target_sigregs *sc)
a4c075f1
UH		 4105{
4106 int err = 0;
4107 int i;
4108
4109 for (i = 0; i < 16; i++) {
4110 err |= __get_user(env->regs[i], &sc->regs.gprs[i]);
4111 }
4112
4113 err |= __get_user(env->psw.mask, &sc->regs.psw.mask);
4114 qemu_log("%s: sc->regs.psw.addr 0x%llx env->psw.addr 0x%llx\n",
4115 __FUNCTION__, (unsigned long long)sc->regs.psw.addr,
4116 (unsigned long long)env->psw.addr);
4117 err |= __get_user(env->psw.addr, &sc->regs.psw.addr);
4118 /* FIXME: 31-bit -> | PSW_ADDR_AMODE */
4119
4120 for (i = 0; i < 16; i++) {
4121 err |= __get_user(env->aregs[i], &sc->regs.acrs[i]);
4122 }
4123 for (i = 0; i < 16; i++) {
4124 err |= __get_user(env->fregs[i].ll, &sc->fpregs.fprs[i]);
4125 }
4126
4127 return err;
4128}
4129
05390248 4130long do_sigreturn(CPUS390XState *env)
a4c075f1
UH		 4131{
4132 sigframe *frame;
4133 abi_ulong frame_addr = env->regs[15];
4134 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4135 (unsigned long long)frame_addr);
4136 target_sigset_t target_set;
4137 sigset_t set;
4138
4139 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
4140 goto badframe;
4141 }
4142 if (__get_user(target_set.sig[0], &frame->sc.oldmask[0])) {
4143 goto badframe;
4144 }
4145
4146 target_to_host_sigset_internal(&set, &target_set);
4147 sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
4148
4149 if (restore_sigregs(env, &frame->sregs)) {
4150 goto badframe;
4151 }
4152
4153 unlock_user_struct(frame, frame_addr, 0);
4154 return env->regs[2];
4155
4156badframe:
4157 unlock_user_struct(frame, frame_addr, 0);
4158 force_sig(TARGET_SIGSEGV);
4159 return 0;
4160}
4161
05390248 4162long do_rt_sigreturn(CPUS390XState *env)
a4c075f1
UH		 4163{
4164 rt_sigframe *frame;
4165 abi_ulong frame_addr = env->regs[15];
4166 qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
4167 (unsigned long long)frame_addr);
4168 sigset_t set;
4169
4170 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
4171 goto badframe;
4172 }
6fea2ea4 4173 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
a4c075f1
UH		 4174
4175 sigprocmask(SIG_SETMASK, &set, NULL); /* ~_BLOCKABLE? */
4176
6fea2ea4 4177 if (restore_sigregs(env, &frame->uc.tuc_mcontext)) {
a4c075f1
UH		 4178 goto badframe;
4179 }
4180
6fea2ea4 4181 if (do_sigaltstack(frame_addr + offsetof(rt_sigframe, uc.tuc_stack), 0,
a4c075f1
UH		 4182 get_sp_from_cpustate(env)) == -EFAULT) {
4183 goto badframe;
4184 }
4185 unlock_user_struct(frame, frame_addr, 0);
4186 return env->regs[2];
4187
4188badframe:
4189 unlock_user_struct(frame, frame_addr, 0);
4190 force_sig(TARGET_SIGSEGV);
4191 return 0;
4192}
4193
bcd4933a
NF		 4194#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
4195
4196/* FIXME: Many of the structures are defined for both PPC and PPC64, but
4197 the signal handling is different enough that we haven't implemented
4198 support for PPC64 yet. Hence the restriction above.
4199
4200 There are various #if'd blocks for code for TARGET_PPC64. These
4201 blocks should go away so that we can successfully run 32-bit and
4202 64-bit binaries on a QEMU configured for PPC64. */
4203
4204/* Size of dummy stack frame allocated when calling signal handler.
4205 See arch/powerpc/include/asm/ptrace.h. */
4206#if defined(TARGET_PPC64)
4207#define SIGNAL_FRAMESIZE 128
4208#else
4209#define SIGNAL_FRAMESIZE 64
4210#endif
4211
4212/* See arch/powerpc/include/asm/sigcontext.h. */
4213struct target_sigcontext {
4214 target_ulong _unused[4];
4215 int32_t signal;
4216#if defined(TARGET_PPC64)
4217 int32_t pad0;
4218#endif
4219 target_ulong handler;
4220 target_ulong oldmask;
4221 target_ulong regs; /* struct pt_regs __user * */
4222 /* TODO: PPC64 includes extra bits here. */
4223};
4224
4225/* Indices for target_mcontext.mc_gregs, below.
4226 See arch/powerpc/include/asm/ptrace.h for details. */
4227enum {
4228 TARGET_PT_R0 = 0,
4229 TARGET_PT_R1 = 1,
4230 TARGET_PT_R2 = 2,
4231 TARGET_PT_R3 = 3,
4232 TARGET_PT_R4 = 4,
4233 TARGET_PT_R5 = 5,
4234 TARGET_PT_R6 = 6,
4235 TARGET_PT_R7 = 7,
4236 TARGET_PT_R8 = 8,
4237 TARGET_PT_R9 = 9,
4238 TARGET_PT_R10 = 10,
4239 TARGET_PT_R11 = 11,
4240 TARGET_PT_R12 = 12,
4241 TARGET_PT_R13 = 13,
4242 TARGET_PT_R14 = 14,
4243 TARGET_PT_R15 = 15,
4244 TARGET_PT_R16 = 16,
4245 TARGET_PT_R17 = 17,
4246 TARGET_PT_R18 = 18,
4247 TARGET_PT_R19 = 19,
4248 TARGET_PT_R20 = 20,
4249 TARGET_PT_R21 = 21,
4250 TARGET_PT_R22 = 22,
4251 TARGET_PT_R23 = 23,
4252 TARGET_PT_R24 = 24,
4253 TARGET_PT_R25 = 25,
4254 TARGET_PT_R26 = 26,
4255 TARGET_PT_R27 = 27,
4256 TARGET_PT_R28 = 28,
4257 TARGET_PT_R29 = 29,
4258 TARGET_PT_R30 = 30,
4259 TARGET_PT_R31 = 31,
4260 TARGET_PT_NIP = 32,
4261 TARGET_PT_MSR = 33,
4262 TARGET_PT_ORIG_R3 = 34,
4263 TARGET_PT_CTR = 35,
4264 TARGET_PT_LNK = 36,
4265 TARGET_PT_XER = 37,
4266 TARGET_PT_CCR = 38,
4267 /* Yes, there are two registers with #39. One is 64-bit only. */
4268 TARGET_PT_MQ = 39,
4269 TARGET_PT_SOFTE = 39,
4270 TARGET_PT_TRAP = 40,
4271 TARGET_PT_DAR = 41,
4272 TARGET_PT_DSISR = 42,
4273 TARGET_PT_RESULT = 43,
4274 TARGET_PT_REGS_COUNT = 44
4275};
4276
4277/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
4278 on 64-bit PPC, sigcontext and mcontext are one and the same. */
4279struct target_mcontext {
4280 target_ulong mc_gregs[48];
4281 /* Includes fpscr. */
4282 uint64_t mc_fregs[33];
4283 target_ulong mc_pad[2];
4284 /* We need to handle Altivec and SPE at the same time, which no
4285 kernel needs to do. Fortunately, the kernel defines this bit to
4286 be Altivec-register-large all the time, rather than trying to
4287 twiddle it based on the specific platform. */
4288 union {
4289 /* SPE vector registers. One extra for SPEFSCR. */
4290 uint32_t spe[33];
4291 /* Altivec vector registers. The packing of VSCR and VRSAVE
4292 varies depending on whether we're PPC64 or not: PPC64 splits
4293 them apart; PPC32 stuffs them together. */
4294#if defined(TARGET_PPC64)
3efa9a67 4295#define QEMU_NVRREG 34
bcd4933a 4296#else
3efa9a67 4297#define QEMU_NVRREG 33
bcd4933a 4298#endif
c227f099 4299 ppc_avr_t altivec[QEMU_NVRREG];
3efa9a67 4300#undef QEMU_NVRREG
bcd4933a
NF		 4301 } mc_vregs __attribute__((__aligned__(16)));
4302};
4303
4304struct target_ucontext {
60e99246
AJ		 4305 target_ulong tuc_flags;
4306 target_ulong tuc_link; /* struct ucontext __user * */
4307 struct target_sigaltstack tuc_stack;
bcd4933a 4308#if !defined(TARGET_PPC64)
60e99246
AJ		 4309 int32_t tuc_pad[7];
4310 target_ulong tuc_regs; /* struct mcontext __user *
bcd4933a
NF		 4311 points to uc_mcontext field */
4312#endif
60e99246 4313 target_sigset_t tuc_sigmask;
bcd4933a 4314#if defined(TARGET_PPC64)
c227f099 4315 target_sigset_t unused[15]; /* Allow for uc_sigmask growth */
60e99246 4316 struct target_sigcontext tuc_mcontext;
bcd4933a 4317#else
60e99246
AJ		 4318 int32_t tuc_maskext[30];
4319 int32_t tuc_pad2[3];
4320 struct target_mcontext tuc_mcontext;
bcd4933a
NF		 4321#endif
4322};
4323
4324/* See arch/powerpc/kernel/signal_32.c. */
4325struct target_sigframe {
4326 struct target_sigcontext sctx;
4327 struct target_mcontext mctx;
4328 int32_t abigap[56];
4329};
4330
4331struct target_rt_sigframe {
4332 struct target_siginfo info;
4333 struct target_ucontext uc;
4334 int32_t abigap[56];
4335};
4336
4337/* We use the mc_pad field for the signal return trampoline. */
4338#define tramp mc_pad
4339
4340/* See arch/powerpc/kernel/signal.c. */
4341static target_ulong get_sigframe(struct target_sigaction *ka,
05390248 4342 CPUPPCState *env,
bcd4933a
NF		 4343 int frame_size)
4344{
4345 target_ulong oldsp, newsp;
4346
4347 oldsp = env->gpr[1];
4348
4349 if ((ka->sa_flags & TARGET_SA_ONSTACK) &&
32a2003a 4350 (sas_ss_flags(oldsp) == 0)) {
bcd4933a
NF		 4351 oldsp = (target_sigaltstack_used.ss_sp
4352 + target_sigaltstack_used.ss_size);
4353 }
4354
4355 newsp = (oldsp - frame_size) & ~0xFUL;
4356
4357 return newsp;
4358}
4359
05390248 4360static int save_user_regs(CPUPPCState *env, struct target_mcontext *frame,
bcd4933a
NF		 4361 int sigret)
4362{
4363 target_ulong msr = env->msr;
4364 int i;
4365 target_ulong ccr = 0;
4366
4367 /* In general, the kernel attempts to be intelligent about what it
4368 needs to save for Altivec/FP/SPE registers. We don't care that
4369 much, so we just go ahead and save everything. */
4370
4371 /* Save general registers. */
4372 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
4373 if (__put_user(env->gpr[i], &frame->mc_gregs[i])) {
4374 return 1;
4375 }
4376 }
4377 if (__put_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP])
4378 || __put_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR])
4379 || __put_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK])
4380 || __put_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]))
4381 return 1;
4382
4383 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
4384 ccr |= env->crf[i] << (32 - ((i + 1) * 4));
4385 }
4386 if (__put_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]))
4387 return 1;
4388
4389 /* Save Altivec registers if necessary. */
4390 if (env->insns_flags & PPC_ALTIVEC) {
4391 for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
c227f099
AL		 4392 ppc_avr_t *avr = &env->avr[i];
4393 ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
bcd4933a
NF		 4394
4395 if (__put_user(avr->u64[0], &vreg->u64[0]) ||
4396 __put_user(avr->u64[1], &vreg->u64[1])) {
4397 return 1;
4398 }
4399 }
4400 /* Set MSR_VR in the saved MSR value to indicate that
4401 frame->mc_vregs contains valid data. */
4402 msr |= MSR_VR;
4403 if (__put_user((uint32_t)env->spr[SPR_VRSAVE],
4404 &frame->mc_vregs.altivec[32].u32[3]))
4405 return 1;
4406 }
4407
4408 /* Save floating point registers. */
4409 if (env->insns_flags & PPC_FLOAT) {
4410 for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
4411 if (__put_user(env->fpr[i], &frame->mc_fregs[i])) {
4412 return 1;
4413 }
4414 }
4415 if (__put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]))
4416 return 1;
4417 }
4418
4419 /* Save SPE registers. The kernel only saves the high half. */
4420 if (env->insns_flags & PPC_SPE) {
4421#if defined(TARGET_PPC64)
4422 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
4423 if (__put_user(env->gpr[i] >> 32, &frame->mc_vregs.spe[i])) {
4424 return 1;
4425 }
4426 }
4427#else
4428 for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
4429 if (__put_user(env->gprh[i], &frame->mc_vregs.spe[i])) {
4430 return 1;
4431 }
4432 }
4433#endif
4434 /* Set MSR_SPE in the saved MSR value to indicate that
4435 frame->mc_vregs contains valid data. */
4436 msr |= MSR_SPE;
4437 if (__put_user(env->spe_fscr, &frame->mc_vregs.spe[32]))
4438 return 1;
4439 }
4440
4441 /* Store MSR. */
4442 if (__put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]))
4443 return 1;
4444
4445 /* Set up the sigreturn trampoline: li r0,sigret; sc. */
4446 if (sigret) {
4447 if (__put_user(0x38000000UL | sigret, &frame->tramp[0]) ||
4448 __put_user(0x44000002UL, &frame->tramp[1])) {
4449 return 1;
4450 }
4451 }
4452
4453 return 0;
4454}
4455
05390248 4456static int restore_user_regs(CPUPPCState *env,
bcd4933a
NF		 4457 struct target_mcontext *frame, int sig)
4458{
4459 target_ulong save_r2 = 0;
4460 target_ulong msr;
4461 target_ulong ccr;
4462
4463 int i;
4464
4465 if (!sig) {
4466 save_r2 = env->gpr[2];
4467 }
4468
4469 /* Restore general registers. */
4470 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
4471 if (__get_user(env->gpr[i], &frame->mc_gregs[i])) {
4472 return 1;
4473 }
4474 }
4475 if (__get_user(env->nip, &frame->mc_gregs[TARGET_PT_NIP])
4476 || __get_user(env->ctr, &frame->mc_gregs[TARGET_PT_CTR])
4477 || __get_user(env->lr, &frame->mc_gregs[TARGET_PT_LNK])
4478 || __get_user(env->xer, &frame->mc_gregs[TARGET_PT_XER]))
4479 return 1;
4480 if (__get_user(ccr, &frame->mc_gregs[TARGET_PT_CCR]))
4481 return 1;
4482
4483 for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
4484 env->crf[i] = (ccr >> (32 - ((i + 1) * 4))) & 0xf;
4485 }
4486
4487 if (!sig) {
4488 env->gpr[2] = save_r2;
4489 }
4490 /* Restore MSR. */
4491 if (__get_user(msr, &frame->mc_gregs[TARGET_PT_MSR]))
4492 return 1;
4493
4494 /* If doing signal return, restore the previous little-endian mode. */
4495 if (sig)
4496 env->msr = (env->msr & ~MSR_LE) | (msr & MSR_LE);
4497
4498 /* Restore Altivec registers if necessary. */
4499 if (env->insns_flags & PPC_ALTIVEC) {
4500 for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
c227f099
AL		 4501 ppc_avr_t *avr = &env->avr[i];
4502 ppc_avr_t *vreg = &frame->mc_vregs.altivec[i];
bcd4933a
NF		 4503
4504 if (__get_user(avr->u64[0], &vreg->u64[0]) ||
4505 __get_user(avr->u64[1], &vreg->u64[1])) {
4506 return 1;
4507 }
4508 }
4509 /* Set MSR_VEC in the saved MSR value to indicate that
4510 frame->mc_vregs contains valid data. */
4511 if (__get_user(env->spr[SPR_VRSAVE],
4512 (target_ulong *)(&frame->mc_vregs.altivec[32].u32[3])))
4513 return 1;
4514 }
4515
4516 /* Restore floating point registers. */
4517 if (env->insns_flags & PPC_FLOAT) {
4518 uint64_t fpscr;
4519 for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
4520 if (__get_user(env->fpr[i], &frame->mc_fregs[i])) {
4521 return 1;
4522 }
4523 }
4524 if (__get_user(fpscr, &frame->mc_fregs[32]))
4525 return 1;
4526 env->fpscr = (uint32_t) fpscr;
4527 }
4528
4529 /* Save SPE registers. The kernel only saves the high half. */
4530 if (env->insns_flags & PPC_SPE) {
4531#if defined(TARGET_PPC64)
4532 for (i = 0; i < ARRAY_SIZE(env->gpr); i++) {
4533 uint32_t hi;
4534
4535 if (__get_user(hi, &frame->mc_vregs.spe[i])) {
4536 return 1;
4537 }
4538 env->gpr[i] = ((uint64_t)hi << 32) | ((uint32_t) env->gpr[i]);
4539 }
4540#else
4541 for (i = 0; i < ARRAY_SIZE(env->gprh); i++) {
4542 if (__get_user(env->gprh[i], &frame->mc_vregs.spe[i])) {
4543 return 1;
4544 }
4545 }
4546#endif
4547 if (__get_user(env->spe_fscr, &frame->mc_vregs.spe[32]))
4548 return 1;
4549 }
4550
4551 return 0;
4552}
4553
4554static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4555 target_sigset_t *set, CPUPPCState *env)
bcd4933a
NF		 4556{
4557 struct target_sigframe *frame;
4558 struct target_sigcontext *sc;
4559 target_ulong frame_addr, newsp;
4560 int err = 0;
4561 int signal;
4562
4563 frame_addr = get_sigframe(ka, env, sizeof(*frame));
4564 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
4565 goto sigsegv;
4566 sc = &frame->sctx;
4567
4568 signal = current_exec_domain_sig(sig);
4569
4570 err |= __put_user(h2g(ka->_sa_handler), &sc->handler);
4571 err |= __put_user(set->sig[0], &sc->oldmask);
4572#if defined(TARGET_PPC64)
4573 err |= __put_user(set->sig[0] >> 32, &sc->_unused[3]);
4574#else
4575 err |= __put_user(set->sig[1], &sc->_unused[3]);
4576#endif
4577 err |= __put_user(h2g(&frame->mctx), &sc->regs);
4578 err |= __put_user(sig, &sc->signal);
4579
4580 /* Save user regs. */
4581 err |= save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn);
4582
4583 /* The kernel checks for the presence of a VDSO here. We don't
4584 emulate a vdso, so use a sigreturn system call. */
4585 env->lr = (target_ulong) h2g(frame->mctx.tramp);
4586
4587 /* Turn off all fp exceptions. */
4588 env->fpscr = 0;
4589
4590 /* Create a stack frame for the caller of the handler. */
4591 newsp = frame_addr - SIGNAL_FRAMESIZE;
4592 err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
4593
4594 if (err)
4595 goto sigsegv;
4596
4597 /* Set up registers for signal handler. */
4598 env->gpr[1] = newsp;
4599 env->gpr[3] = signal;
4600 env->gpr[4] = (target_ulong) h2g(sc);
4601 env->nip = (target_ulong) ka->_sa_handler;
4602 /* Signal handlers are entered in big-endian mode. */
4603 env->msr &= ~MSR_LE;
4604
4605 unlock_user_struct(frame, frame_addr, 1);
4606 return;
4607
4608sigsegv:
4609 unlock_user_struct(frame, frame_addr, 1);
eeacee4d 4610 qemu_log("segfaulting from setup_frame\n");
66393fb9 4611 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4612}
4613
4614static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 4615 target_siginfo_t *info,
05390248 4616 target_sigset_t *set, CPUPPCState *env)
bcd4933a
NF		 4617{
4618 struct target_rt_sigframe *rt_sf;
4619 struct target_mcontext *frame;
4620 target_ulong rt_sf_addr, newsp = 0;
4621 int i, err = 0;
4622 int signal;
4623
4624 rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
4625 if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
4626 goto sigsegv;
4627
4628 signal = current_exec_domain_sig(sig);
4629
4630 err |= copy_siginfo_to_user(&rt_sf->info, info);
4631
60e99246
AJ		 4632 err |= __put_user(0, &rt_sf->uc.tuc_flags);
4633 err |= __put_user(0, &rt_sf->uc.tuc_link);
bcd4933a 4634 err |= __put_user((target_ulong)target_sigaltstack_used.ss_sp,
60e99246 4635 &rt_sf->uc.tuc_stack.ss_sp);
bcd4933a 4636 err |= __put_user(sas_ss_flags(env->gpr[1]),
60e99246 4637 &rt_sf->uc.tuc_stack.ss_flags);
bcd4933a 4638 err |= __put_user(target_sigaltstack_used.ss_size,
60e99246
AJ		 4639 &rt_sf->uc.tuc_stack.ss_size);
4640 err |= __put_user(h2g (&rt_sf->uc.tuc_mcontext),
4641 &rt_sf->uc.tuc_regs);
bcd4933a 4642 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
60e99246 4643 err |= __put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]);
bcd4933a
NF		 4644 }
4645
60e99246 4646 frame = &rt_sf->uc.tuc_mcontext;
bcd4933a
NF		 4647 err |= save_user_regs(env, frame, TARGET_NR_rt_sigreturn);
4648
4649 /* The kernel checks for the presence of a VDSO here. We don't
4650 emulate a vdso, so use a sigreturn system call. */
4651 env->lr = (target_ulong) h2g(frame->tramp);
4652
4653 /* Turn off all fp exceptions. */
4654 env->fpscr = 0;
4655
4656 /* Create a stack frame for the caller of the handler. */
4657 newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
4658 err |= __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
4659
4660 if (err)
4661 goto sigsegv;
4662
4663 /* Set up registers for signal handler. */
4664 env->gpr[1] = newsp;
4665 env->gpr[3] = (target_ulong) signal;
4666 env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
4667 env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
4668 env->gpr[6] = (target_ulong) h2g(rt_sf);
4669 env->nip = (target_ulong) ka->_sa_handler;
4670 /* Signal handlers are entered in big-endian mode. */
4671 env->msr &= ~MSR_LE;
4672
4673 unlock_user_struct(rt_sf, rt_sf_addr, 1);
4674 return;
4675
4676sigsegv:
4677 unlock_user_struct(rt_sf, rt_sf_addr, 1);
eeacee4d 4678 qemu_log("segfaulting from setup_rt_frame\n");
66393fb9 4679 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4680
4681}
4682
05390248 4683long do_sigreturn(CPUPPCState *env)
bcd4933a
NF		 4684{
4685 struct target_sigcontext *sc = NULL;
4686 struct target_mcontext *sr = NULL;
4687 target_ulong sr_addr, sc_addr;
4688 sigset_t blocked;
c227f099 4689 target_sigset_t set;
bcd4933a
NF		 4690
4691 sc_addr = env->gpr[1] + SIGNAL_FRAMESIZE;
4692 if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1))
4693 goto sigsegv;
4694
4695#if defined(TARGET_PPC64)
4696 set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32);
4697#else
4698 if(__get_user(set.sig[0], &sc->oldmask) ||
4699 __get_user(set.sig[1], &sc->_unused[3]))
4700 goto sigsegv;
4701#endif
4702 target_to_host_sigset_internal(&blocked, &set);
4703 sigprocmask(SIG_SETMASK, &blocked, NULL);
4704
4705 if (__get_user(sr_addr, &sc->regs))
4706 goto sigsegv;
4707 if (!lock_user_struct(VERIFY_READ, sr, sr_addr, 1))
4708 goto sigsegv;
4709 if (restore_user_regs(env, sr, 1))
4710 goto sigsegv;
4711
4712 unlock_user_struct(sr, sr_addr, 1);
4713 unlock_user_struct(sc, sc_addr, 1);
4714 return -TARGET_QEMU_ESIGRETURN;
4715
4716sigsegv:
4717 unlock_user_struct(sr, sr_addr, 1);
4718 unlock_user_struct(sc, sc_addr, 1);
eeacee4d 4719 qemu_log("segfaulting from do_sigreturn\n");
66393fb9 4720 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4721 return 0;
4722}
4723
4724/* See arch/powerpc/kernel/signal_32.c. */
05390248 4725static int do_setcontext(struct target_ucontext *ucp, CPUPPCState *env, int sig)
bcd4933a
NF		 4726{
4727 struct target_mcontext *mcp;
4728 target_ulong mcp_addr;
4729 sigset_t blocked;
c227f099 4730 target_sigset_t set;
bcd4933a 4731
60e99246 4732 if (copy_from_user(&set, h2g(ucp) + offsetof(struct target_ucontext, tuc_sigmask),
bcd4933a
NF		 4733 sizeof (set)))
4734 return 1;
4735
4736#if defined(TARGET_PPC64)
4737 fprintf (stderr, "do_setcontext: not implemented\n");
4738 return 0;
4739#else
60e99246 4740 if (__get_user(mcp_addr, &ucp->tuc_regs))
bcd4933a
NF		 4741 return 1;
4742
4743 if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1))
4744 return 1;
4745
4746 target_to_host_sigset_internal(&blocked, &set);
4747 sigprocmask(SIG_SETMASK, &blocked, NULL);
4748 if (restore_user_regs(env, mcp, sig))
4749 goto sigsegv;
4750
4751 unlock_user_struct(mcp, mcp_addr, 1);
4752 return 0;
4753
4754sigsegv:
4755 unlock_user_struct(mcp, mcp_addr, 1);
4756 return 1;
4757#endif
4758}
4759
05390248 4760long do_rt_sigreturn(CPUPPCState *env)
bcd4933a
NF		 4761{
4762 struct target_rt_sigframe *rt_sf = NULL;
4763 target_ulong rt_sf_addr;
4764
4765 rt_sf_addr = env->gpr[1] + SIGNAL_FRAMESIZE + 16;
4766 if (!lock_user_struct(VERIFY_READ, rt_sf, rt_sf_addr, 1))
4767 goto sigsegv;
4768
4769 if (do_setcontext(&rt_sf->uc, env, 1))
4770 goto sigsegv;
4771
4772 do_sigaltstack(rt_sf_addr
60e99246 4773 + offsetof(struct target_rt_sigframe, uc.tuc_stack),
bcd4933a
NF		 4774 0, env->gpr[1]);
4775
4776 unlock_user_struct(rt_sf, rt_sf_addr, 1);
4777 return -TARGET_QEMU_ESIGRETURN;
4778
4779sigsegv:
4780 unlock_user_struct(rt_sf, rt_sf_addr, 1);
eeacee4d 4781 qemu_log("segfaulting from do_rt_sigreturn\n");
66393fb9 4782 force_sig(TARGET_SIGSEGV);
bcd4933a
NF		 4783 return 0;
4784}
4785
492a8744
LV		 4786#elif defined(TARGET_M68K)
4787
4788struct target_sigcontext {
4789 abi_ulong sc_mask;
4790 abi_ulong sc_usp;
4791 abi_ulong sc_d0;
4792 abi_ulong sc_d1;
4793 abi_ulong sc_a0;
4794 abi_ulong sc_a1;
4795 unsigned short sc_sr;
4796 abi_ulong sc_pc;
4797};
4798
4799struct target_sigframe
4800{
4801 abi_ulong pretcode;
4802 int sig;
4803 int code;
4804 abi_ulong psc;
4805 char retcode[8];
4806 abi_ulong extramask[TARGET_NSIG_WORDS-1];
4807 struct target_sigcontext sc;
4808};
7181155d 4809
c227f099 4810typedef int target_greg_t;
7181155d 4811#define TARGET_NGREG 18
c227f099 4812typedef target_greg_t target_gregset_t[TARGET_NGREG];
7181155d
LV		 4813
4814typedef struct target_fpregset {
4815 int f_fpcntl[3];
4816 int f_fpregs[8*3];
c227f099 4817} target_fpregset_t;
7181155d
LV		 4818
4819struct target_mcontext {
4820 int version;
c227f099
AL		 4821 target_gregset_t gregs;
4822 target_fpregset_t fpregs;
7181155d
LV		 4823};
4824
4825#define TARGET_MCONTEXT_VERSION 2
4826
4827struct target_ucontext {
60e99246
AJ		 4828 abi_ulong tuc_flags;
4829 abi_ulong tuc_link;
4830 target_stack_t tuc_stack;
4831 struct target_mcontext tuc_mcontext;
4832 abi_long tuc_filler[80];
4833 target_sigset_t tuc_sigmask;
7181155d
LV		 4834};
4835
4836struct target_rt_sigframe
4837{
4838 abi_ulong pretcode;
4839 int sig;
4840 abi_ulong pinfo;
4841 abi_ulong puc;
4842 char retcode[8];
4843 struct target_siginfo info;
4844 struct target_ucontext uc;
4845};
492a8744
LV		 4846
4847static int
05390248
AF		 4848setup_sigcontext(struct target_sigcontext *sc, CPUM68KState *env,
4849 abi_ulong mask)
492a8744
LV		 4850{
4851 int err = 0;
4852
4853 err |= __put_user(mask, &sc->sc_mask);
4854 err |= __put_user(env->aregs[7], &sc->sc_usp);
4855 err |= __put_user(env->dregs[0], &sc->sc_d0);
4856 err |= __put_user(env->dregs[1], &sc->sc_d1);
4857 err |= __put_user(env->aregs[0], &sc->sc_a0);
4858 err |= __put_user(env->aregs[1], &sc->sc_a1);
4859 err |= __put_user(env->sr, &sc->sc_sr);
4860 err |= __put_user(env->pc, &sc->sc_pc);
4861
4862 return err;
4863}
4864
4865static int
05390248 4866restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0)
492a8744
LV		 4867{
4868 int err = 0;
4869 int temp;
4870
4871 err |= __get_user(env->aregs[7], &sc->sc_usp);
4872 err |= __get_user(env->dregs[1], &sc->sc_d1);
4873 err |= __get_user(env->aregs[0], &sc->sc_a0);
4874 err |= __get_user(env->aregs[1], &sc->sc_a1);
4875 err |= __get_user(env->pc, &sc->sc_pc);
4876 err |= __get_user(temp, &sc->sc_sr);
4877 env->sr = (env->sr & 0xff00) | (temp & 0xff);
4878
4879 *pd0 = tswapl(sc->sc_d0);
4880
4881 return err;
4882}
4883
4884/*
4885 * Determine which stack to use..
4886 */
4887static inline abi_ulong
05390248
AF		 4888get_sigframe(struct target_sigaction *ka, CPUM68KState *regs,
4889 size_t frame_size)
492a8744
LV		 4890{
4891 unsigned long sp;
4892
4893 sp = regs->aregs[7];
4894
4895 /* This is the X/Open sanctioned signal stack switching. */
4896 if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
4897 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
4898 }
4899
4900 return ((sp - frame_size) & -8UL);
4901}
4902
4903static void setup_frame(int sig, struct target_sigaction *ka,
05390248 4904 target_sigset_t *set, CPUM68KState *env)
492a8744
LV		 4905{
4906 struct target_sigframe *frame;
4907 abi_ulong frame_addr;
4908 abi_ulong retcode_addr;
4909 abi_ulong sc_addr;
4910 int err = 0;
4911 int i;
4912
4913 frame_addr = get_sigframe(ka, env, sizeof *frame);
4914 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
4915 goto give_sigsegv;
4916
4917 err |= __put_user(sig, &frame->sig);
4918
4919 sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
4920 err |= __put_user(sc_addr, &frame->psc);
4921
4922 err |= setup_sigcontext(&frame->sc, env, set->sig[0]);
4923 if (err)
4924 goto give_sigsegv;
4925
4926 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
4927 if (__put_user(set->sig[i], &frame->extramask[i - 1]))
4928 goto give_sigsegv;
4929 }
4930
4931 /* Set up to return from userspace. */
4932
4933 retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
4934 err |= __put_user(retcode_addr, &frame->pretcode);
4935
4936 /* moveq #,d0; trap #0 */
4937
4938 err |= __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
4939 (long *)(frame->retcode));
4940
4941 if (err)
4942 goto give_sigsegv;
4943
4944 /* Set up to return from userspace */
4945
4946 env->aregs[7] = frame_addr;
4947 env->pc = ka->_sa_handler;
4948
4949 unlock_user_struct(frame, frame_addr, 1);
4950 return;
4951
4952give_sigsegv:
4953 unlock_user_struct(frame, frame_addr, 1);
66393fb9 4954 force_sig(TARGET_SIGSEGV);
492a8744
LV		 4955}
4956
7181155d 4957static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
05390248 4958 CPUM68KState *env)
7181155d 4959{
60e99246 4960 target_greg_t *gregs = uc->tuc_mcontext.gregs;
7181155d
LV		 4961 int err;
4962
60e99246 4963 err = __put_user(TARGET_MCONTEXT_VERSION, &uc->tuc_mcontext.version);
7181155d
LV		 4964 err |= __put_user(env->dregs[0], &gregs[0]);
4965 err |= __put_user(env->dregs[1], &gregs[1]);
4966 err |= __put_user(env->dregs[2], &gregs[2]);
4967 err |= __put_user(env->dregs[3], &gregs[3]);
4968 err |= __put_user(env->dregs[4], &gregs[4]);
4969 err |= __put_user(env->dregs[5], &gregs[5]);
4970 err |= __put_user(env->dregs[6], &gregs[6]);
4971 err |= __put_user(env->dregs[7], &gregs[7]);
4972 err |= __put_user(env->aregs[0], &gregs[8]);
4973 err |= __put_user(env->aregs[1], &gregs[9]);
4974 err |= __put_user(env->aregs[2], &gregs[10]);
4975 err |= __put_user(env->aregs[3], &gregs[11]);
4976 err |= __put_user(env->aregs[4], &gregs[12]);
4977 err |= __put_user(env->aregs[5], &gregs[13]);
4978 err |= __put_user(env->aregs[6], &gregs[14]);
4979 err |= __put_user(env->aregs[7], &gregs[15]);
4980 err |= __put_user(env->pc, &gregs[16]);
4981 err |= __put_user(env->sr, &gregs[17]);
4982
4983 return err;
4984}
4985
05390248 4986static inline int target_rt_restore_ucontext(CPUM68KState *env,
7181155d
LV		 4987 struct target_ucontext *uc,
4988 int *pd0)
4989{
4990 int temp;
4991 int err;
60e99246 4992 target_greg_t *gregs = uc->tuc_mcontext.gregs;
7181155d 4993
60e99246 4994 err = __get_user(temp, &uc->tuc_mcontext.version);
7181155d
LV		 4995 if (temp != TARGET_MCONTEXT_VERSION)
4996 goto badframe;
4997
4998 /* restore passed registers */
4999 err |= __get_user(env->dregs[0], &gregs[0]);
5000 err |= __get_user(env->dregs[1], &gregs[1]);
5001 err |= __get_user(env->dregs[2], &gregs[2]);
5002 err |= __get_user(env->dregs[3], &gregs[3]);
5003 err |= __get_user(env->dregs[4], &gregs[4]);
5004 err |= __get_user(env->dregs[5], &gregs[5]);
5005 err |= __get_user(env->dregs[6], &gregs[6]);
5006 err |= __get_user(env->dregs[7], &gregs[7]);
5007 err |= __get_user(env->aregs[0], &gregs[8]);
5008 err |= __get_user(env->aregs[1], &gregs[9]);
5009 err |= __get_user(env->aregs[2], &gregs[10]);
5010 err |= __get_user(env->aregs[3], &gregs[11]);
5011 err |= __get_user(env->aregs[4], &gregs[12]);
5012 err |= __get_user(env->aregs[5], &gregs[13]);
5013 err |= __get_user(env->aregs[6], &gregs[14]);
5014 err |= __get_user(env->aregs[7], &gregs[15]);
5015 err |= __get_user(env->pc, &gregs[16]);
5016 err |= __get_user(temp, &gregs[17]);
5017 env->sr = (env->sr & 0xff00) | (temp & 0xff);
5018
5019 *pd0 = env->dregs[0];
5020 return err;
5021
5022badframe:
5023 return 1;
5024}
5025
492a8744 5026static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 5027 target_siginfo_t *info,
05390248 5028 target_sigset_t *set, CPUM68KState *env)
492a8744 5029{
7181155d
LV		 5030 struct target_rt_sigframe *frame;
5031 abi_ulong frame_addr;
5032 abi_ulong retcode_addr;
5033 abi_ulong info_addr;
5034 abi_ulong uc_addr;
5035 int err = 0;
5036 int i;
5037
5038 frame_addr = get_sigframe(ka, env, sizeof *frame);
5039 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
5040 goto give_sigsegv;
5041
5042 err |= __put_user(sig, &frame->sig);
5043
5044 info_addr = frame_addr + offsetof(struct target_rt_sigframe, info);
5045 err |= __put_user(info_addr, &frame->pinfo);
5046
5047 uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
5048 err |= __put_user(uc_addr, &frame->puc);
5049
5050 err |= copy_siginfo_to_user(&frame->info, info);
5051
5052 /* Create the ucontext */
5053
60e99246
AJ		 5054 err |= __put_user(0, &frame->uc.tuc_flags);
5055 err |= __put_user(0, &frame->uc.tuc_link);
7181155d 5056 err |= __put_user(target_sigaltstack_used.ss_sp,
60e99246 5057 &frame->uc.tuc_stack.ss_sp);
7181155d 5058 err |= __put_user(sas_ss_flags(env->aregs[7]),
60e99246 5059 &frame->uc.tuc_stack.ss_flags);
7181155d 5060 err |= __put_user(target_sigaltstack_used.ss_size,
60e99246 5061 &frame->uc.tuc_stack.ss_size);
7181155d
LV		 5062 err |= target_rt_setup_ucontext(&frame->uc, env);
5063
5064 if (err)
5065 goto give_sigsegv;
5066
5067 for(i = 0; i < TARGET_NSIG_WORDS; i++) {
60e99246 5068 if (__put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]))
7181155d
LV		 5069 goto give_sigsegv;
5070 }
5071
5072 /* Set up to return from userspace. */
5073
5074 retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
5075 err |= __put_user(retcode_addr, &frame->pretcode);
5076
5077 /* moveq #,d0; notb d0; trap #0 */
5078
5079 err |= __put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
5080 (long *)(frame->retcode + 0));
5081 err |= __put_user(0x4e40, (short *)(frame->retcode + 4));
5082
5083 if (err)
5084 goto give_sigsegv;
5085
5086 /* Set up to return from userspace */
5087
5088 env->aregs[7] = frame_addr;
5089 env->pc = ka->_sa_handler;
5090
5091 unlock_user_struct(frame, frame_addr, 1);
5092 return;
5093
5094give_sigsegv:
5095 unlock_user_struct(frame, frame_addr, 1);
66393fb9 5096 force_sig(TARGET_SIGSEGV);
492a8744
LV		 5097}
5098
05390248 5099long do_sigreturn(CPUM68KState *env)
492a8744
LV		 5100{
5101 struct target_sigframe *frame;
5102 abi_ulong frame_addr = env->aregs[7] - 4;
c227f099 5103 target_sigset_t target_set;
492a8744
LV		 5104 sigset_t set;
5105 int d0, i;
5106
5107 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
5108 goto badframe;
5109
5110 /* set blocked signals */
5111
5112 if (__get_user(target_set.sig[0], &frame->sc.sc_mask))
5113 goto badframe;
5114
5115 for(i = 1; i < TARGET_NSIG_WORDS; i++) {
5116 if (__get_user(target_set.sig[i], &frame->extramask[i - 1]))
5117 goto badframe;
5118 }
5119
5120 target_to_host_sigset_internal(&set, &target_set);
5121 sigprocmask(SIG_SETMASK, &set, NULL);
5122
5123 /* restore registers */
5124
5125 if (restore_sigcontext(env, &frame->sc, &d0))
5126 goto badframe;
5127
5128 unlock_user_struct(frame, frame_addr, 0);
5129 return d0;
5130
5131badframe:
5132 unlock_user_struct(frame, frame_addr, 0);
5133 force_sig(TARGET_SIGSEGV);
5134 return 0;
5135}
5136
05390248 5137long do_rt_sigreturn(CPUM68KState *env)
492a8744 5138{
7181155d
LV		 5139 struct target_rt_sigframe *frame;
5140 abi_ulong frame_addr = env->aregs[7] - 4;
c227f099 5141 target_sigset_t target_set;
7181155d
LV		 5142 sigset_t set;
5143 int d0;
5144
5145 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
5146 goto badframe;
5147
5148 target_to_host_sigset_internal(&set, &target_set);
5149 sigprocmask(SIG_SETMASK, &set, NULL);
5150
5151 /* restore registers */
5152
5153 if (target_rt_restore_ucontext(env, &frame->uc, &d0))
5154 goto badframe;
5155
5156 if (do_sigaltstack(frame_addr +
60e99246 5157 offsetof(struct target_rt_sigframe, uc.tuc_stack),
7181155d
LV		 5158 0, get_sp_from_cpustate(env)) == -EFAULT)
5159 goto badframe;
5160
5161 unlock_user_struct(frame, frame_addr, 0);
5162 return d0;
5163
5164badframe:
5165 unlock_user_struct(frame, frame_addr, 0);
5166 force_sig(TARGET_SIGSEGV);
5167 return 0;
492a8744
LV		 5168}
5169
6049f4f8
RH		 5170#elif defined(TARGET_ALPHA)
5171
5172struct target_sigcontext {
5173 abi_long sc_onstack;
5174 abi_long sc_mask;
5175 abi_long sc_pc;
5176 abi_long sc_ps;
5177 abi_long sc_regs[32];
5178 abi_long sc_ownedfp;
5179 abi_long sc_fpregs[32];
5180 abi_ulong sc_fpcr;
5181 abi_ulong sc_fp_control;
5182 abi_ulong sc_reserved1;
5183 abi_ulong sc_reserved2;
5184 abi_ulong sc_ssize;
5185 abi_ulong sc_sbase;
5186 abi_ulong sc_traparg_a0;
5187 abi_ulong sc_traparg_a1;
5188 abi_ulong sc_traparg_a2;
5189 abi_ulong sc_fp_trap_pc;
5190 abi_ulong sc_fp_trigger_sum;
5191 abi_ulong sc_fp_trigger_inst;
5192};
5193
5194struct target_ucontext {
60e99246
AJ		 5195 abi_ulong tuc_flags;
5196 abi_ulong tuc_link;
5197 abi_ulong tuc_osf_sigmask;
5198 target_stack_t tuc_stack;
5199 struct target_sigcontext tuc_mcontext;
5200 target_sigset_t tuc_sigmask;
6049f4f8
RH		 5201};
5202
5203struct target_sigframe {
5204 struct target_sigcontext sc;
5205 unsigned int retcode[3];
5206};
5207
5208struct target_rt_sigframe {
5209 target_siginfo_t info;
5210 struct target_ucontext uc;
5211 unsigned int retcode[3];
5212};
5213
5214#define INSN_MOV_R30_R16 0x47fe0410
5215#define INSN_LDI_R0 0x201f0000
5216#define INSN_CALLSYS 0x00000083
5217
05390248 5218static int setup_sigcontext(struct target_sigcontext *sc, CPUAlphaState *env,
6049f4f8
RH		 5219 abi_ulong frame_addr, target_sigset_t *set)
5220{
5221 int i, err = 0;
5222
5223 err |= __put_user(on_sig_stack(frame_addr), &sc->sc_onstack);
5224 err |= __put_user(set->sig[0], &sc->sc_mask);
5225 err |= __put_user(env->pc, &sc->sc_pc);
5226 err |= __put_user(8, &sc->sc_ps);
5227
5228 for (i = 0; i < 31; ++i) {
5229 err |= __put_user(env->ir[i], &sc->sc_regs[i]);
5230 }
5231 err |= __put_user(0, &sc->sc_regs[31]);
5232
5233 for (i = 0; i < 31; ++i) {
5234 err |= __put_user(env->fir[i], &sc->sc_fpregs[i]);
5235 }
5236 err |= __put_user(0, &sc->sc_fpregs[31]);
5237 err |= __put_user(cpu_alpha_load_fpcr(env), &sc->sc_fpcr);
5238
5239 err |= __put_user(0, &sc->sc_traparg_a0); /* FIXME */
5240 err |= __put_user(0, &sc->sc_traparg_a1); /* FIXME */
5241 err |= __put_user(0, &sc->sc_traparg_a2); /* FIXME */
5242
5243 return err;
5244}
5245
05390248
AF		 5246static int restore_sigcontext(CPUAlphaState *env,
5247 struct target_sigcontext *sc)
6049f4f8
RH		 5248{
5249 uint64_t fpcr;
5250 int i, err = 0;
5251
5252 err |= __get_user(env->pc, &sc->sc_pc);
5253
5254 for (i = 0; i < 31; ++i) {
5255 err |= __get_user(env->ir[i], &sc->sc_regs[i]);
5256 }
5257 for (i = 0; i < 31; ++i) {
5258 err |= __get_user(env->fir[i], &sc->sc_fpregs[i]);
5259 }
5260
5261 err |= __get_user(fpcr, &sc->sc_fpcr);
5262 cpu_alpha_store_fpcr(env, fpcr);
5263
5264 return err;
5265}
5266
5267static inline abi_ulong get_sigframe(struct target_sigaction *sa,
05390248
AF		 5268 CPUAlphaState *env,
5269 unsigned long framesize)
6049f4f8
RH		 5270{
5271 abi_ulong sp = env->ir[IR_SP];
5272
5273 /* This is the X/Open sanctioned signal stack switching. */
5274 if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
5275 sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
5276 }
5277 return (sp - framesize) & -32;
5278}
5279
5280static void setup_frame(int sig, struct target_sigaction *ka,
05390248 5281 target_sigset_t *set, CPUAlphaState *env)
6049f4f8
RH		 5282{
5283 abi_ulong frame_addr, r26;
5284 struct target_sigframe *frame;
5285 int err = 0;
5286
5287 frame_addr = get_sigframe(ka, env, sizeof(*frame));
5288 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5289 goto give_sigsegv;
5290 }
5291
5292 err |= setup_sigcontext(&frame->sc, env, frame_addr, set);
5293
5294 if (ka->sa_restorer) {
5295 r26 = ka->sa_restorer;
5296 } else {
5297 err |= __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
5298 err |= __put_user(INSN_LDI_R0 + TARGET_NR_sigreturn,
5299 &frame->retcode[1]);
5300 err |= __put_user(INSN_CALLSYS, &frame->retcode[2]);
5301 /* imb() */
5302 r26 = frame_addr;
5303 }
5304
5305 unlock_user_struct(frame, frame_addr, 1);
5306
5307 if (err) {
5308 give_sigsegv:
5309 if (sig == TARGET_SIGSEGV) {
5310 ka->_sa_handler = TARGET_SIG_DFL;
5311 }
5312 force_sig(TARGET_SIGSEGV);
5313 }
5314
5315 env->ir[IR_RA] = r26;
5316 env->ir[IR_PV] = env->pc = ka->_sa_handler;
5317 env->ir[IR_A0] = sig;
5318 env->ir[IR_A1] = 0;
5319 env->ir[IR_A2] = frame_addr + offsetof(struct target_sigframe, sc);
5320 env->ir[IR_SP] = frame_addr;
5321}
5322
5323static void setup_rt_frame(int sig, struct target_sigaction *ka,
5324 target_siginfo_t *info,
05390248 5325 target_sigset_t *set, CPUAlphaState *env)
6049f4f8
RH		 5326{
5327 abi_ulong frame_addr, r26;
5328 struct target_rt_sigframe *frame;
5329 int i, err = 0;
5330
5331 frame_addr = get_sigframe(ka, env, sizeof(*frame));
5332 if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
5333 goto give_sigsegv;
5334 }
5335
5336 err |= copy_siginfo_to_user(&frame->info, info);
5337
60e99246
AJ		 5338 err |= __put_user(0, &frame->uc.tuc_flags);
5339 err |= __put_user(0, &frame->uc.tuc_link);
5340 err |= __put_user(set->sig[0], &frame->uc.tuc_osf_sigmask);
6049f4f8 5341 err |= __put_user(target_sigaltstack_used.ss_sp,
60e99246 5342 &frame->uc.tuc_stack.ss_sp);
6049f4f8 5343 err |= __put_user(sas_ss_flags(env->ir[IR_SP]),
60e99246 5344 &frame->uc.tuc_stack.ss_flags);
6049f4f8 5345 err |= __put_user(target_sigaltstack_used.ss_size,
60e99246
AJ		 5346 &frame->uc.tuc_stack.ss_size);
5347 err |= setup_sigcontext(&frame->uc.tuc_mcontext, env, frame_addr, set);
6049f4f8 5348 for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
60e99246 5349 err |= __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
6049f4f8
RH		 5350 }
5351
5352 if (ka->sa_restorer) {
5353 r26 = ka->sa_restorer;
5354 } else {
5355 err |= __put_user(INSN_MOV_R30_R16, &frame->retcode[0]);
5356 err |= __put_user(INSN_LDI_R0 + TARGET_NR_rt_sigreturn,
5357 &frame->retcode[1]);
5358 err |= __put_user(INSN_CALLSYS, &frame->retcode[2]);
5359 /* imb(); */
5360 r26 = frame_addr;
5361 }
5362
5363 if (err) {
5364 give_sigsegv:
5365 if (sig == TARGET_SIGSEGV) {
5366 ka->_sa_handler = TARGET_SIG_DFL;
5367 }
5368 force_sig(TARGET_SIGSEGV);
5369 }
5370
5371 env->ir[IR_RA] = r26;
5372 env->ir[IR_PV] = env->pc = ka->_sa_handler;
5373 env->ir[IR_A0] = sig;
5374 env->ir[IR_A1] = frame_addr + offsetof(struct target_rt_sigframe, info);
5375 env->ir[IR_A2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
5376 env->ir[IR_SP] = frame_addr;
5377}
5378
05390248 5379long do_sigreturn(CPUAlphaState *env)
6049f4f8
RH		 5380{
5381 struct target_sigcontext *sc;
5382 abi_ulong sc_addr = env->ir[IR_A0];
5383 target_sigset_t target_set;
5384 sigset_t set;
5385
5386 if (!lock_user_struct(VERIFY_READ, sc, sc_addr, 1)) {
5387 goto badframe;
5388 }
5389
5390 target_sigemptyset(&target_set);
5391 if (__get_user(target_set.sig[0], &sc->sc_mask)) {
5392 goto badframe;
5393 }
5394
5395 target_to_host_sigset_internal(&set, &target_set);
5396 sigprocmask(SIG_SETMASK, &set, NULL);
5397
5398 if (restore_sigcontext(env, sc)) {
5399 goto badframe;
5400 }
5401 unlock_user_struct(sc, sc_addr, 0);
5402 return env->ir[IR_V0];
5403
5404 badframe:
5405 unlock_user_struct(sc, sc_addr, 0);
5406 force_sig(TARGET_SIGSEGV);
5407}
5408
05390248 5409long do_rt_sigreturn(CPUAlphaState *env)
6049f4f8
RH		 5410{
5411 abi_ulong frame_addr = env->ir[IR_A0];
5412 struct target_rt_sigframe *frame;
5413 sigset_t set;
5414
5415 if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
5416 goto badframe;
5417 }
60e99246 5418 target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
6049f4f8
RH		 5419 sigprocmask(SIG_SETMASK, &set, NULL);
5420
60e99246 5421 if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) {
6049f4f8
RH		 5422 goto badframe;
5423 }
5424 if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
60e99246 5425 uc.tuc_stack),
6049f4f8
RH		 5426 0, env->ir[IR_SP]) == -EFAULT) {
5427 goto badframe;
5428 }
5429
5430 unlock_user_struct(frame, frame_addr, 0);
5431 return env->ir[IR_V0];
5432
5433
5434 badframe:
5435 unlock_user_struct(frame, frame_addr, 0);
5436 force_sig(TARGET_SIGSEGV);
5437}
5438
b346ff46
FB		 5439#else
5440
624f7979 5441static void setup_frame(int sig, struct target_sigaction *ka,
9349b4f9 5442 target_sigset_t *set, CPUArchState *env)
b346ff46
FB		 5443{
5444 fprintf(stderr, "setup_frame: not implemented\n");
5445}
5446
624f7979 5447static void setup_rt_frame(int sig, struct target_sigaction *ka,
c227f099 5448 target_siginfo_t *info,
9349b4f9 5449 target_sigset_t *set, CPUArchState *env)
b346ff46
FB		 5450{
5451 fprintf(stderr, "setup_rt_frame: not implemented\n");
5452}
5453
9349b4f9 5454long do_sigreturn(CPUArchState *env)
b346ff46
FB		 5455{
5456 fprintf(stderr, "do_sigreturn: not implemented\n");
f8b0aa25 5457 return -TARGET_ENOSYS;
b346ff46
FB		 5458}
5459
9349b4f9 5460long do_rt_sigreturn(CPUArchState *env)
b346ff46
FB		 5461{
5462 fprintf(stderr, "do_rt_sigreturn: not implemented\n");
f8b0aa25 5463 return -TARGET_ENOSYS;
b346ff46
FB		 5464}
5465
66fb9763
FB		 5466#endif
5467
9349b4f9 5468void process_pending_signals(CPUArchState *cpu_env)
66fb9763
FB		 5469{
5470 int sig;
992f48a0 5471 abi_ulong handler;
9de5e440 5472 sigset_t set, old_set;
c227f099 5473 target_sigset_t target_old_set;
624f7979
PB		 5474 struct emulated_sigtable *k;
5475 struct target_sigaction *sa;
66fb9763 5476 struct sigqueue *q;
624f7979 5477 TaskState *ts = cpu_env->opaque;
3b46e624 5478
624f7979 5479 if (!ts->signal_pending)
31e31b8a
FB		 5480 return;
5481
624f7979
PB		 5482 /* FIXME: This is not threadsafe. */
5483 k = ts->sigtab;
66fb9763
FB		 5484 for(sig = 1; sig <= TARGET_NSIG; sig++) {
5485 if (k->pending)
31e31b8a 5486 goto handle_signal;
66fb9763 5487 k++;
31e31b8a
FB		 5488 }
5489 /* if no signal is pending, just return */
624f7979 5490 ts->signal_pending = 0;
31e31b8a 5491 return;
66fb9763 5492
31e31b8a 5493 handle_signal:
66fb9763 5494#ifdef DEBUG_SIGNAL
bc8a22cc 5495 fprintf(stderr, "qemu: process signal %d\n", sig);
66fb9763
FB		 5496#endif
5497 /* dequeue signal */
5498 q = k->first;
5499 k->first = q->next;
5500 if (!k->first)
5501 k->pending = 0;
3b46e624 5502
1fddef4b
FB		 5503 sig = gdb_handlesig (cpu_env, sig);
5504 if (!sig) {
ca587a8e
AJ		 5505 sa = NULL;
5506 handler = TARGET_SIG_IGN;
5507 } else {
5508 sa = &sigact_table[sig - 1];
5509 handler = sa->_sa_handler;
1fddef4b 5510 }
66fb9763 5511
66fb9763 5512 if (handler == TARGET_SIG_DFL) {
ca587a8e
AJ		 5513 /* default handler : ignore some signal. The other are job control or fatal */
5514 if (sig == TARGET_SIGTSTP || sig == TARGET_SIGTTIN || sig == TARGET_SIGTTOU) {
5515 kill(getpid(),SIGSTOP);
5516 } else if (sig != TARGET_SIGCHLD &&
5517 sig != TARGET_SIGURG &&
5518 sig != TARGET_SIGWINCH &&
5519 sig != TARGET_SIGCONT) {
66fb9763
FB		 5520 force_sig(sig);
5521 }
5522 } else if (handler == TARGET_SIG_IGN) {
5523 /* ignore sig */
5524 } else if (handler == TARGET_SIG_ERR) {
5525 force_sig(sig);
5526 } else {
9de5e440 5527 /* compute the blocked signals during the handler execution */
624f7979 5528 target_to_host_sigset(&set, &sa->sa_mask);
9de5e440
FB		 5529 /* SA_NODEFER indicates that the current signal should not be
5530 blocked during the handler */
624f7979 5531 if (!(sa->sa_flags & TARGET_SA_NODEFER))
9de5e440 5532 sigaddset(&set, target_to_host_signal(sig));
3b46e624 5533
9de5e440
FB		 5534 /* block signals in the handler using Linux */
5535 sigprocmask(SIG_BLOCK, &set, &old_set);
5536 /* save the previous blocked signal state to restore it at the
5537 end of the signal execution (see do_sigreturn) */
9231944d 5538 host_to_target_sigset_internal(&target_old_set, &old_set);
9de5e440 5539
bc8a22cc 5540 /* if the CPU is in VM86 mode, we restore the 32 bit values */
84409ddb 5541#if defined(TARGET_I386) && !defined(TARGET_X86_64)
bc8a22cc
FB		 5542 {
5543 CPUX86State *env = cpu_env;
5544 if (env->eflags & VM_MASK)
5545 save_v86_state(env);
5546 }
5547#endif
9de5e440 5548 /* prepare the stack frame of the virtual CPU */
624f7979
PB		 5549 if (sa->sa_flags & TARGET_SA_SIGINFO)
5550 setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
66fb9763 5551 else
624f7979
PB		 5552 setup_frame(sig, sa, &target_old_set, cpu_env);
5553 if (sa->sa_flags & TARGET_SA_RESETHAND)
5554 sa->_sa_handler = TARGET_SIG_DFL;
31e31b8a 5555 }
66fb9763 5556 if (q != &k->info)
624f7979 5557 free_sigqueue(cpu_env, q);
66fb9763 5558}
Qemu copy for testing