2 * Emulation of Linux signals
4 * Copyright (c) 2003 Fabrice Bellard
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
26 #include <sys/ucontext.h>
27 #include <sys/resource.h>
30 #include "qemu-common.h"
31 #include "target_signal.h"
33 //#define DEBUG_SIGNAL
35 static struct target_sigaltstack target_sigaltstack_used
= {
38 .ss_flags
= TARGET_SS_DISABLE
,
41 static struct target_sigaction sigact_table
[TARGET_NSIG
];
43 static void host_signal_handler(int host_signum
, siginfo_t
*info
,
46 static uint8_t host_to_target_signal_table
[_NSIG
] = {
47 [SIGHUP
] = TARGET_SIGHUP
,
48 [SIGINT
] = TARGET_SIGINT
,
49 [SIGQUIT
] = TARGET_SIGQUIT
,
50 [SIGILL
] = TARGET_SIGILL
,
51 [SIGTRAP
] = TARGET_SIGTRAP
,
52 [SIGABRT
] = TARGET_SIGABRT
,
53 /* [SIGIOT] = TARGET_SIGIOT,*/
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
,
64 [SIGSTKFLT
] = TARGET_SIGSTKFLT
,
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 */
82 /* Nasty hack: Reverse SIGRTMIN and SIGRTMAX to avoid overlap with
83 host libpthread signals. This assumes no one actually uses SIGRTMAX :-/
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
,
89 static uint8_t target_to_host_signal_table
[_NSIG
];
91 static inline int on_sig_stack(unsigned long sp
)
93 return (sp
- target_sigaltstack_used
.ss_sp
94 < target_sigaltstack_used
.ss_size
);
97 static inline int sas_ss_flags(unsigned long sp
)
99 return (target_sigaltstack_used
.ss_size
== 0 ? SS_DISABLE
100 : on_sig_stack(sp
) ? SS_ONSTACK
: 0);
103 int host_to_target_signal(int sig
)
107 return host_to_target_signal_table
[sig
];
110 int target_to_host_signal(int sig
)
114 return target_to_host_signal_table
[sig
];
117 static inline void target_sigemptyset(target_sigset_t
*set
)
119 memset(set
, 0, sizeof(*set
));
122 static inline void target_sigaddset(target_sigset_t
*set
, int signum
)
125 abi_ulong mask
= (abi_ulong
)1 << (signum
% TARGET_NSIG_BPW
);
126 set
->sig
[signum
/ TARGET_NSIG_BPW
] |= mask
;
129 static inline int target_sigismember(const target_sigset_t
*set
, int signum
)
132 abi_ulong mask
= (abi_ulong
)1 << (signum
% TARGET_NSIG_BPW
);
133 return ((set
->sig
[signum
/ TARGET_NSIG_BPW
] & mask
) != 0);
136 static void host_to_target_sigset_internal(target_sigset_t
*d
,
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
));
148 void host_to_target_sigset(target_sigset_t
*d
, const sigset_t
*s
)
153 host_to_target_sigset_internal(&d1
, s
);
154 for(i
= 0;i
< TARGET_NSIG_WORDS
; i
++)
155 d
->sig
[i
] = tswapal(d1
.sig
[i
]);
158 static void target_to_host_sigset_internal(sigset_t
*d
,
159 const target_sigset_t
*s
)
163 for (i
= 1; i
<= TARGET_NSIG
; i
++) {
164 if (target_sigismember(s
, i
)) {
165 sigaddset(d
, target_to_host_signal(i
));
170 void target_to_host_sigset(sigset_t
*d
, const target_sigset_t
*s
)
175 for(i
= 0;i
< TARGET_NSIG_WORDS
; i
++)
176 s1
.sig
[i
] = tswapal(s
->sig
[i
]);
177 target_to_host_sigset_internal(d
, &s1
);
180 void host_to_target_old_sigset(abi_ulong
*old_sigset
,
181 const sigset_t
*sigset
)
184 host_to_target_sigset(&d
, sigset
);
185 *old_sigset
= d
.sig
[0];
188 void target_to_host_old_sigset(sigset_t
*sigset
,
189 const abi_ulong
*old_sigset
)
194 d
.sig
[0] = *old_sigset
;
195 for(i
= 1;i
< TARGET_NSIG_WORDS
; i
++)
197 target_to_host_sigset(sigset
, &d
);
200 /* siginfo conversion */
202 static inline void host_to_target_siginfo_noswap(target_siginfo_t
*tinfo
,
203 const siginfo_t
*info
)
206 sig
= host_to_target_signal(info
->si_signo
);
207 tinfo
->si_signo
= sig
;
209 tinfo
->si_code
= info
->si_code
;
210 if (sig
== SIGILL
|| sig
== SIGFPE
|| sig
== SIGSEGV
||
211 sig
== SIGBUS
|| sig
== SIGTRAP
) {
212 /* should never come here, but who knows. The information for
213 the target is irrelevant */
214 tinfo
->_sifields
._sigfault
._addr
= 0;
215 } else if (sig
== SIGIO
) {
216 tinfo
->_sifields
._sigpoll
._fd
= info
->si_fd
;
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 */
221 tinfo
->_sifields
._rt
._sigval
.sival_ptr
=
222 (abi_ulong
)(unsigned long)info
->si_value
.sival_ptr
;
226 static void tswap_siginfo(target_siginfo_t
*tinfo
,
227 const target_siginfo_t
*info
)
230 sig
= info
->si_signo
;
231 tinfo
->si_signo
= tswap32(sig
);
232 tinfo
->si_errno
= tswap32(info
->si_errno
);
233 tinfo
->si_code
= tswap32(info
->si_code
);
234 if (sig
== SIGILL
|| sig
== SIGFPE
|| sig
== SIGSEGV
||
235 sig
== SIGBUS
|| sig
== SIGTRAP
) {
236 tinfo
->_sifields
._sigfault
._addr
=
237 tswapal(info
->_sifields
._sigfault
._addr
);
238 } else if (sig
== SIGIO
) {
239 tinfo
->_sifields
._sigpoll
._fd
= tswap32(info
->_sifields
._sigpoll
._fd
);
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
);
243 tinfo
->_sifields
._rt
._sigval
.sival_ptr
=
244 tswapal(info
->_sifields
._rt
._sigval
.sival_ptr
);
249 void host_to_target_siginfo(target_siginfo_t
*tinfo
, const siginfo_t
*info
)
251 host_to_target_siginfo_noswap(tinfo
, info
);
252 tswap_siginfo(tinfo
, tinfo
);
255 /* XXX: we support only POSIX RT signals are used. */
256 /* XXX: find a solution for 64 bit (additional malloced data is needed) */
257 void target_to_host_siginfo(siginfo_t
*info
, const target_siginfo_t
*tinfo
)
259 info
->si_signo
= tswap32(tinfo
->si_signo
);
260 info
->si_errno
= tswap32(tinfo
->si_errno
);
261 info
->si_code
= tswap32(tinfo
->si_code
);
262 info
->si_pid
= tswap32(tinfo
->_sifields
._rt
._pid
);
263 info
->si_uid
= tswap32(tinfo
->_sifields
._rt
._uid
);
264 info
->si_value
.sival_ptr
=
265 (void *)(long)tswapal(tinfo
->_sifields
._rt
._sigval
.sival_ptr
);
268 static int fatal_signal (int sig
)
273 case TARGET_SIGWINCH
:
274 /* Ignored by default. */
281 /* Job control signals. */
288 /* returns 1 if given signal should dump core if not handled */
289 static int core_dump_signal(int sig
)
305 void signal_init(void)
307 struct sigaction act
;
308 struct sigaction oact
;
312 /* generate signal conversion tables */
313 for(i
= 1; i
< _NSIG
; i
++) {
314 if (host_to_target_signal_table
[i
] == 0)
315 host_to_target_signal_table
[i
] = i
;
317 for(i
= 1; i
< _NSIG
; i
++) {
318 j
= host_to_target_signal_table
[i
];
319 target_to_host_signal_table
[j
] = i
;
322 /* set all host signal handlers. ALL signals are blocked during
323 the handlers to serialize them. */
324 memset(sigact_table
, 0, sizeof(sigact_table
));
326 sigfillset(&act
.sa_mask
);
327 act
.sa_flags
= SA_SIGINFO
;
328 act
.sa_sigaction
= host_signal_handler
;
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
;
337 /* If there's already a handler installed then something has
338 gone horribly wrong, so don't even try to handle that case. */
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
))
344 sigaction(host_sig
, &act
, NULL
);
348 /* signal queue handling */
350 static inline struct sigqueue
*alloc_sigqueue(CPUState
*env
)
352 TaskState
*ts
= env
->opaque
;
353 struct sigqueue
*q
= ts
->first_free
;
356 ts
->first_free
= q
->next
;
360 static inline void free_sigqueue(CPUState
*env
, struct sigqueue
*q
)
362 TaskState
*ts
= env
->opaque
;
363 q
->next
= ts
->first_free
;
367 /* abort execution with signal */
368 static void QEMU_NORETURN
force_sig(int target_sig
)
370 TaskState
*ts
= (TaskState
*)thread_env
->opaque
;
371 int host_sig
, core_dumped
= 0;
372 struct sigaction act
;
373 host_sig
= target_to_host_signal(target_sig
);
374 gdb_signalled(thread_env
, target_sig
);
376 /* dump core if supported by target binary format */
377 if (core_dump_signal(target_sig
) && (ts
->bprm
->core_dump
!= NULL
)) {
380 ((*ts
->bprm
->core_dump
)(target_sig
, thread_env
) == 0);
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
);
388 setrlimit(RLIMIT_CORE
, &nodump
);
389 (void) fprintf(stderr
, "qemu: uncaught target signal %d (%s) - %s\n",
390 target_sig
, strsignal(host_sig
), "core dumped" );
393 /* The proper exit code for dying from an uncaught signal is
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
399 sigfillset(&act
.sa_mask
);
400 act
.sa_handler
= SIG_DFL
;
401 sigaction(host_sig
, &act
, NULL
);
403 /* For some reason raise(host_sig) doesn't send the signal when
404 * statically linked on x86-64. */
405 kill(getpid(), host_sig
);
407 /* Make sure the signal isn't masked (just reuse the mask inside
409 sigdelset(&act
.sa_mask
, host_sig
);
410 sigsuspend(&act
.sa_mask
);
416 /* queue a signal so that it will be send to the virtual CPU as soon
418 int queue_signal(CPUState
*env
, int sig
, target_siginfo_t
*info
)
420 TaskState
*ts
= env
->opaque
;
421 struct emulated_sigtable
*k
;
422 struct sigqueue
*q
, **pq
;
426 #if defined(DEBUG_SIGNAL)
427 fprintf(stderr
, "queue_signal: sig=%d\n",
430 k
= &ts
->sigtab
[sig
- 1];
431 queue
= gdb_queuesig ();
432 handler
= sigact_table
[sig
- 1]._sa_handler
;
433 if (!queue
&& handler
== TARGET_SIG_DFL
) {
434 if (sig
== TARGET_SIGTSTP
|| sig
== TARGET_SIGTTIN
|| sig
== TARGET_SIGTTOU
) {
435 kill(getpid(),SIGSTOP
);
438 /* default handler : ignore some signal. The other are fatal */
439 if (sig
!= TARGET_SIGCHLD
&&
440 sig
!= TARGET_SIGURG
&&
441 sig
!= TARGET_SIGWINCH
&&
442 sig
!= TARGET_SIGCONT
) {
445 return 0; /* indicate ignored */
447 } else if (!queue
&& handler
== TARGET_SIG_IGN
) {
450 } else if (!queue
&& handler
== TARGET_SIG_ERR
) {
454 if (sig
< TARGET_SIGRTMIN
) {
455 /* if non real time signal, we queue exactly one signal */
465 q
= alloc_sigqueue(env
);
476 /* signal that a new signal is pending */
477 ts
->signal_pending
= 1;
478 return 1; /* indicates that the signal was queued */
482 static void host_signal_handler(int host_signum
, siginfo_t
*info
,
486 target_siginfo_t tinfo
;
488 /* the CPU emulator uses some host signals to detect exceptions,
489 we forward to it some signals */
490 if ((host_signum
== SIGSEGV
|| host_signum
== SIGBUS
)
491 && info
->si_code
> 0) {
492 if (cpu_signal_handler(host_signum
, info
, puc
))
496 /* get target signal number */
497 sig
= host_to_target_signal(host_signum
);
498 if (sig
< 1 || sig
> TARGET_NSIG
)
500 #if defined(DEBUG_SIGNAL)
501 fprintf(stderr
, "qemu: got signal %d\n", sig
);
503 host_to_target_siginfo_noswap(&tinfo
, info
);
504 if (queue_signal(thread_env
, sig
, &tinfo
) == 1) {
505 /* interrupt the virtual CPU as soon as possible */
506 cpu_exit(thread_env
);
510 /* do_sigaltstack() returns target values and errnos. */
511 /* compare linux/kernel/signal.c:do_sigaltstack() */
512 abi_long
do_sigaltstack(abi_ulong uss_addr
, abi_ulong uoss_addr
, abi_ulong sp
)
515 struct target_sigaltstack oss
;
517 /* XXX: test errors */
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
);
527 struct target_sigaltstack
*uss
;
528 struct target_sigaltstack ss
;
530 ret
= -TARGET_EFAULT
;
531 if (!lock_user_struct(VERIFY_READ
, uss
, uss_addr
, 1)
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
))
536 unlock_user_struct(uss
, uss_addr
, 0);
539 if (on_sig_stack(sp
))
542 ret
= -TARGET_EINVAL
;
543 if (ss
.ss_flags
!= TARGET_SS_DISABLE
544 && ss
.ss_flags
!= TARGET_SS_ONSTACK
548 if (ss
.ss_flags
== TARGET_SS_DISABLE
) {
552 ret
= -TARGET_ENOMEM
;
553 if (ss
.ss_size
< MINSIGSTKSZ
)
557 target_sigaltstack_used
.ss_sp
= ss
.ss_sp
;
558 target_sigaltstack_used
.ss_size
= ss
.ss_size
;
562 ret
= -TARGET_EFAULT
;
563 if (copy_to_user(uoss_addr
, &oss
, sizeof(oss
)))
572 /* do_sigaction() return host values and errnos */
573 int do_sigaction(int sig
, const struct target_sigaction
*act
,
574 struct target_sigaction
*oact
)
576 struct target_sigaction
*k
;
577 struct sigaction act1
;
581 if (sig
< 1 || sig
> TARGET_NSIG
|| sig
== TARGET_SIGKILL
|| sig
== TARGET_SIGSTOP
)
583 k
= &sigact_table
[sig
- 1];
584 #if defined(DEBUG_SIGNAL)
585 fprintf(stderr
, "sigaction sig=%d act=0x%p, oact=0x%p\n",
589 oact
->_sa_handler
= tswapal(k
->_sa_handler
);
590 oact
->sa_flags
= tswapal(k
->sa_flags
);
591 #if !defined(TARGET_MIPS)
592 oact
->sa_restorer
= tswapal(k
->sa_restorer
);
594 oact
->sa_mask
= k
->sa_mask
;
597 /* FIXME: This is not threadsafe. */
598 k
->_sa_handler
= tswapal(act
->_sa_handler
);
599 k
->sa_flags
= tswapal(act
->sa_flags
);
600 #if !defined(TARGET_MIPS)
601 k
->sa_restorer
= tswapal(act
->sa_restorer
);
603 k
->sa_mask
= act
->sa_mask
;
605 /* we update the host linux signal state */
606 host_sig
= target_to_host_signal(sig
);
607 if (host_sig
!= SIGSEGV
&& host_sig
!= SIGBUS
) {
608 sigfillset(&act1
.sa_mask
);
609 act1
.sa_flags
= SA_SIGINFO
;
610 if (k
->sa_flags
& TARGET_SA_RESTART
)
611 act1
.sa_flags
|= SA_RESTART
;
612 /* NOTE: it is important to update the host kernel signal
613 ignore state to avoid getting unexpected interrupted
615 if (k
->_sa_handler
== TARGET_SIG_IGN
) {
616 act1
.sa_sigaction
= (void *)SIG_IGN
;
617 } else if (k
->_sa_handler
== TARGET_SIG_DFL
) {
618 if (fatal_signal (sig
))
619 act1
.sa_sigaction
= host_signal_handler
;
621 act1
.sa_sigaction
= (void *)SIG_DFL
;
623 act1
.sa_sigaction
= host_signal_handler
;
625 ret
= sigaction(host_sig
, &act1
, NULL
);
631 static inline int copy_siginfo_to_user(target_siginfo_t
*tinfo
,
632 const target_siginfo_t
*info
)
634 tswap_siginfo(tinfo
, info
);
638 static inline int current_exec_domain_sig(int sig
)
640 return /* current->exec_domain && current->exec_domain->signal_invmap
641 && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig
;
644 #if defined(TARGET_I386) && TARGET_ABI_BITS == 32
646 /* from the Linux kernel */
648 struct target_fpreg
{
649 uint16_t significand
[4];
653 struct target_fpxreg
{
654 uint16_t significand
[4];
659 struct target_xmmreg
{
660 abi_ulong element
[4];
663 struct target_fpstate
{
664 /* Regular FPU environment */
672 struct target_fpreg _st
[8];
674 uint16_t magic
; /* 0xffff = regular FPU data only */
676 /* FXSR FPU environment */
677 abi_ulong _fxsr_env
[6]; /* FXSR FPU env is ignored */
680 struct target_fpxreg _fxsr_st
[8]; /* FXSR FPU reg data is ignored */
681 struct target_xmmreg _xmm
[8];
682 abi_ulong padding
[56];
685 #define X86_FXSR_MAGIC 0x0000
687 struct target_sigcontext
{
705 abi_ulong esp_at_signal
;
707 abi_ulong fpstate
; /* pointer */
712 struct target_ucontext
{
715 target_stack_t tuc_stack
;
716 struct target_sigcontext tuc_mcontext
;
717 target_sigset_t tuc_sigmask
; /* mask last for extensibility */
724 struct target_sigcontext sc
;
725 struct target_fpstate fpstate
;
726 abi_ulong extramask
[TARGET_NSIG_WORDS
-1];
736 struct target_siginfo info
;
737 struct target_ucontext uc
;
738 struct target_fpstate fpstate
;
743 * Set up a signal frame.
746 /* XXX: save x87 state */
748 setup_sigcontext(struct target_sigcontext
*sc
, struct target_fpstate
*fpstate
,
749 CPUX86State
*env
, abi_ulong mask
, abi_ulong fpstate_addr
)
754 /* already locked in setup_frame() */
755 err
|= __put_user(env
->segs
[R_GS
].selector
, (unsigned int *)&sc
->gs
);
756 err
|= __put_user(env
->segs
[R_FS
].selector
, (unsigned int *)&sc
->fs
);
757 err
|= __put_user(env
->segs
[R_ES
].selector
, (unsigned int *)&sc
->es
);
758 err
|= __put_user(env
->segs
[R_DS
].selector
, (unsigned int *)&sc
->ds
);
759 err
|= __put_user(env
->regs
[R_EDI
], &sc
->edi
);
760 err
|= __put_user(env
->regs
[R_ESI
], &sc
->esi
);
761 err
|= __put_user(env
->regs
[R_EBP
], &sc
->ebp
);
762 err
|= __put_user(env
->regs
[R_ESP
], &sc
->esp
);
763 err
|= __put_user(env
->regs
[R_EBX
], &sc
->ebx
);
764 err
|= __put_user(env
->regs
[R_EDX
], &sc
->edx
);
765 err
|= __put_user(env
->regs
[R_ECX
], &sc
->ecx
);
766 err
|= __put_user(env
->regs
[R_EAX
], &sc
->eax
);
767 err
|= __put_user(env
->exception_index
, &sc
->trapno
);
768 err
|= __put_user(env
->error_code
, &sc
->err
);
769 err
|= __put_user(env
->eip
, &sc
->eip
);
770 err
|= __put_user(env
->segs
[R_CS
].selector
, (unsigned int *)&sc
->cs
);
771 err
|= __put_user(env
->eflags
, &sc
->eflags
);
772 err
|= __put_user(env
->regs
[R_ESP
], &sc
->esp_at_signal
);
773 err
|= __put_user(env
->segs
[R_SS
].selector
, (unsigned int *)&sc
->ss
);
775 cpu_x86_fsave(env
, fpstate_addr
, 1);
776 fpstate
->status
= fpstate
->sw
;
778 err
|= __put_user(magic
, &fpstate
->magic
);
779 err
|= __put_user(fpstate_addr
, &sc
->fpstate
);
781 /* non-iBCS2 extensions.. */
782 err
|= __put_user(mask
, &sc
->oldmask
);
783 err
|= __put_user(env
->cr
[2], &sc
->cr2
);
788 * Determine which stack to use..
791 static inline abi_ulong
792 get_sigframe(struct target_sigaction
*ka
, CPUX86State
*env
, size_t frame_size
)
796 /* Default to using normal stack */
797 esp
= env
->regs
[R_ESP
];
798 /* This is the X/Open sanctioned signal stack switching. */
799 if (ka
->sa_flags
& TARGET_SA_ONSTACK
) {
800 if (sas_ss_flags(esp
) == 0)
801 esp
= target_sigaltstack_used
.ss_sp
+ target_sigaltstack_used
.ss_size
;
804 /* This is the legacy signal stack switching. */
806 if ((env
->segs
[R_SS
].selector
& 0xffff) != __USER_DS
&&
807 !(ka
->sa_flags
& TARGET_SA_RESTORER
) &&
809 esp
= (unsigned long) ka
->sa_restorer
;
811 return (esp
- frame_size
) & -8ul;
814 /* compare linux/arch/i386/kernel/signal.c:setup_frame() */
815 static void setup_frame(int sig
, struct target_sigaction
*ka
,
816 target_sigset_t
*set
, CPUX86State
*env
)
818 abi_ulong frame_addr
;
819 struct sigframe
*frame
;
822 frame_addr
= get_sigframe(ka
, env
, sizeof(*frame
));
824 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
827 err
|= __put_user(current_exec_domain_sig(sig
),
832 setup_sigcontext(&frame
->sc
, &frame
->fpstate
, env
, set
->sig
[0],
833 frame_addr
+ offsetof(struct sigframe
, fpstate
));
837 for(i
= 1; i
< TARGET_NSIG_WORDS
; i
++) {
838 if (__put_user(set
->sig
[i
], &frame
->extramask
[i
- 1]))
842 /* Set up to return from userspace. If provided, use a stub
843 already in userspace. */
844 if (ka
->sa_flags
& TARGET_SA_RESTORER
) {
845 err
|= __put_user(ka
->sa_restorer
, &frame
->pretcode
);
848 abi_ulong retcode_addr
;
849 retcode_addr
= frame_addr
+ offsetof(struct sigframe
, retcode
);
850 err
|= __put_user(retcode_addr
, &frame
->pretcode
);
851 /* This is popl %eax ; movl $,%eax ; int $0x80 */
853 err
|= __put_user(val16
, (uint16_t *)(frame
->retcode
+0));
854 err
|= __put_user(TARGET_NR_sigreturn
, (int *)(frame
->retcode
+2));
856 err
|= __put_user(val16
, (uint16_t *)(frame
->retcode
+6));
862 /* Set up registers for signal handler */
863 env
->regs
[R_ESP
] = frame_addr
;
864 env
->eip
= ka
->_sa_handler
;
866 cpu_x86_load_seg(env
, R_DS
, __USER_DS
);
867 cpu_x86_load_seg(env
, R_ES
, __USER_DS
);
868 cpu_x86_load_seg(env
, R_SS
, __USER_DS
);
869 cpu_x86_load_seg(env
, R_CS
, __USER_CS
);
870 env
->eflags
&= ~TF_MASK
;
872 unlock_user_struct(frame
, frame_addr
, 1);
877 unlock_user_struct(frame
, frame_addr
, 1);
878 if (sig
== TARGET_SIGSEGV
)
879 ka
->_sa_handler
= TARGET_SIG_DFL
;
880 force_sig(TARGET_SIGSEGV
/* , current */);
883 /* compare linux/arch/i386/kernel/signal.c:setup_rt_frame() */
884 static void setup_rt_frame(int sig
, struct target_sigaction
*ka
,
885 target_siginfo_t
*info
,
886 target_sigset_t
*set
, CPUX86State
*env
)
888 abi_ulong frame_addr
, addr
;
889 struct rt_sigframe
*frame
;
892 frame_addr
= get_sigframe(ka
, env
, sizeof(*frame
));
894 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
897 err
|= __put_user(current_exec_domain_sig(sig
),
899 addr
= frame_addr
+ offsetof(struct rt_sigframe
, info
);
900 err
|= __put_user(addr
, &frame
->pinfo
);
901 addr
= frame_addr
+ offsetof(struct rt_sigframe
, uc
);
902 err
|= __put_user(addr
, &frame
->puc
);
903 err
|= copy_siginfo_to_user(&frame
->info
, info
);
907 /* Create the ucontext. */
908 err
|= __put_user(0, &frame
->uc
.tuc_flags
);
909 err
|= __put_user(0, &frame
->uc
.tuc_link
);
910 err
|= __put_user(target_sigaltstack_used
.ss_sp
,
911 &frame
->uc
.tuc_stack
.ss_sp
);
912 err
|= __put_user(sas_ss_flags(get_sp_from_cpustate(env
)),
913 &frame
->uc
.tuc_stack
.ss_flags
);
914 err
|= __put_user(target_sigaltstack_used
.ss_size
,
915 &frame
->uc
.tuc_stack
.ss_size
);
916 err
|= setup_sigcontext(&frame
->uc
.tuc_mcontext
, &frame
->fpstate
,
918 frame_addr
+ offsetof(struct rt_sigframe
, fpstate
));
919 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
920 if (__put_user(set
->sig
[i
], &frame
->uc
.tuc_sigmask
.sig
[i
]))
924 /* Set up to return from userspace. If provided, use a stub
925 already in userspace. */
926 if (ka
->sa_flags
& TARGET_SA_RESTORER
) {
927 err
|= __put_user(ka
->sa_restorer
, &frame
->pretcode
);
930 addr
= frame_addr
+ offsetof(struct rt_sigframe
, retcode
);
931 err
|= __put_user(addr
, &frame
->pretcode
);
932 /* This is movl $,%eax ; int $0x80 */
933 err
|= __put_user(0xb8, (char *)(frame
->retcode
+0));
934 err
|= __put_user(TARGET_NR_rt_sigreturn
, (int *)(frame
->retcode
+1));
936 err
|= __put_user(val16
, (uint16_t *)(frame
->retcode
+5));
942 /* Set up registers for signal handler */
943 env
->regs
[R_ESP
] = frame_addr
;
944 env
->eip
= ka
->_sa_handler
;
946 cpu_x86_load_seg(env
, R_DS
, __USER_DS
);
947 cpu_x86_load_seg(env
, R_ES
, __USER_DS
);
948 cpu_x86_load_seg(env
, R_SS
, __USER_DS
);
949 cpu_x86_load_seg(env
, R_CS
, __USER_CS
);
950 env
->eflags
&= ~TF_MASK
;
952 unlock_user_struct(frame
, frame_addr
, 1);
957 unlock_user_struct(frame
, frame_addr
, 1);
958 if (sig
== TARGET_SIGSEGV
)
959 ka
->_sa_handler
= TARGET_SIG_DFL
;
960 force_sig(TARGET_SIGSEGV
/* , current */);
964 restore_sigcontext(CPUX86State
*env
, struct target_sigcontext
*sc
, int *peax
)
966 unsigned int err
= 0;
967 abi_ulong fpstate_addr
;
968 unsigned int tmpflags
;
970 cpu_x86_load_seg(env
, R_GS
, tswap16(sc
->gs
));
971 cpu_x86_load_seg(env
, R_FS
, tswap16(sc
->fs
));
972 cpu_x86_load_seg(env
, R_ES
, tswap16(sc
->es
));
973 cpu_x86_load_seg(env
, R_DS
, tswap16(sc
->ds
));
975 env
->regs
[R_EDI
] = tswapl(sc
->edi
);
976 env
->regs
[R_ESI
] = tswapl(sc
->esi
);
977 env
->regs
[R_EBP
] = tswapl(sc
->ebp
);
978 env
->regs
[R_ESP
] = tswapl(sc
->esp
);
979 env
->regs
[R_EBX
] = tswapl(sc
->ebx
);
980 env
->regs
[R_EDX
] = tswapl(sc
->edx
);
981 env
->regs
[R_ECX
] = tswapl(sc
->ecx
);
982 env
->eip
= tswapl(sc
->eip
);
984 cpu_x86_load_seg(env
, R_CS
, lduw_p(&sc
->cs
) | 3);
985 cpu_x86_load_seg(env
, R_SS
, lduw_p(&sc
->ss
) | 3);
987 tmpflags
= tswapl(sc
->eflags
);
988 env
->eflags
= (env
->eflags
& ~0x40DD5) | (tmpflags
& 0x40DD5);
989 // regs->orig_eax = -1; /* disable syscall checks */
991 fpstate_addr
= tswapl(sc
->fpstate
);
992 if (fpstate_addr
!= 0) {
993 if (!access_ok(VERIFY_READ
, fpstate_addr
,
994 sizeof(struct target_fpstate
)))
996 cpu_x86_frstor(env
, fpstate_addr
, 1);
999 *peax
= tswapl(sc
->eax
);
1005 long do_sigreturn(CPUX86State
*env
)
1007 struct sigframe
*frame
;
1008 abi_ulong frame_addr
= env
->regs
[R_ESP
] - 8;
1009 target_sigset_t target_set
;
1013 #if defined(DEBUG_SIGNAL)
1014 fprintf(stderr
, "do_sigreturn\n");
1016 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
1018 /* set blocked signals */
1019 if (__get_user(target_set
.sig
[0], &frame
->sc
.oldmask
))
1021 for(i
= 1; i
< TARGET_NSIG_WORDS
; i
++) {
1022 if (__get_user(target_set
.sig
[i
], &frame
->extramask
[i
- 1]))
1026 target_to_host_sigset_internal(&set
, &target_set
);
1027 sigprocmask(SIG_SETMASK
, &set
, NULL
);
1029 /* restore registers */
1030 if (restore_sigcontext(env
, &frame
->sc
, &eax
))
1032 unlock_user_struct(frame
, frame_addr
, 0);
1036 unlock_user_struct(frame
, frame_addr
, 0);
1037 force_sig(TARGET_SIGSEGV
);
1041 long do_rt_sigreturn(CPUX86State
*env
)
1043 abi_ulong frame_addr
;
1044 struct rt_sigframe
*frame
;
1048 frame_addr
= env
->regs
[R_ESP
] - 4;
1049 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
1051 target_to_host_sigset(&set
, &frame
->uc
.tuc_sigmask
);
1052 sigprocmask(SIG_SETMASK
, &set
, NULL
);
1054 if (restore_sigcontext(env
, &frame
->uc
.tuc_mcontext
, &eax
))
1057 if (do_sigaltstack(frame_addr
+ offsetof(struct rt_sigframe
, uc
.tuc_stack
), 0,
1058 get_sp_from_cpustate(env
)) == -EFAULT
)
1061 unlock_user_struct(frame
, frame_addr
, 0);
1065 unlock_user_struct(frame
, frame_addr
, 0);
1066 force_sig(TARGET_SIGSEGV
);
1070 #elif defined(TARGET_ARM)
1072 struct target_sigcontext
{
1074 abi_ulong error_code
;
1093 abi_ulong fault_address
;
1096 struct target_ucontext_v1
{
1097 abi_ulong tuc_flags
;
1099 target_stack_t tuc_stack
;
1100 struct target_sigcontext tuc_mcontext
;
1101 target_sigset_t tuc_sigmask
; /* mask last for extensibility */
1104 struct target_ucontext_v2
{
1105 abi_ulong tuc_flags
;
1107 target_stack_t tuc_stack
;
1108 struct target_sigcontext tuc_mcontext
;
1109 target_sigset_t tuc_sigmask
; /* mask last for extensibility */
1110 char __unused
[128 - sizeof(target_sigset_t
)];
1111 abi_ulong tuc_regspace
[128] __attribute__((__aligned__(8)));
1114 struct target_user_vfp
{
1115 uint64_t fpregs
[32];
1119 struct target_user_vfp_exc
{
1125 struct target_vfp_sigframe
{
1128 struct target_user_vfp ufp
;
1129 struct target_user_vfp_exc ufp_exc
;
1130 } __attribute__((__aligned__(8)));
1132 struct target_iwmmxt_sigframe
{
1136 /* Note that not all the coprocessor control registers are stored here */
1143 } __attribute__((__aligned__(8)));
1145 #define TARGET_VFP_MAGIC 0x56465001
1146 #define TARGET_IWMMXT_MAGIC 0x12ef842a
1150 struct target_sigcontext sc
;
1151 abi_ulong extramask
[TARGET_NSIG_WORDS
-1];
1157 struct target_ucontext_v2 uc
;
1161 struct rt_sigframe_v1
1165 struct target_siginfo info
;
1166 struct target_ucontext_v1 uc
;
1170 struct rt_sigframe_v2
1172 struct target_siginfo info
;
1173 struct target_ucontext_v2 uc
;
1177 #define TARGET_CONFIG_CPU_32 1
1180 * For ARM syscalls, we encode the syscall number into the instruction.
1182 #define SWI_SYS_SIGRETURN (0xef000000|(TARGET_NR_sigreturn + ARM_SYSCALL_BASE))
1183 #define SWI_SYS_RT_SIGRETURN (0xef000000|(TARGET_NR_rt_sigreturn + ARM_SYSCALL_BASE))
1186 * For Thumb syscalls, we pass the syscall number via r7. We therefore
1187 * need two 16-bit instructions.
1189 #define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_sigreturn))
1190 #define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (TARGET_NR_rt_sigreturn))
1192 static const abi_ulong retcodes
[4] = {
1193 SWI_SYS_SIGRETURN
, SWI_THUMB_SIGRETURN
,
1194 SWI_SYS_RT_SIGRETURN
, SWI_THUMB_RT_SIGRETURN
1198 #define __get_user_error(x,p,e) __get_user(x, p)
1200 static inline int valid_user_regs(CPUState
*regs
)
1206 setup_sigcontext(struct target_sigcontext
*sc
, /*struct _fpstate *fpstate,*/
1207 CPUState
*env
, abi_ulong mask
)
1209 __put_user(env
->regs
[0], &sc
->arm_r0
);
1210 __put_user(env
->regs
[1], &sc
->arm_r1
);
1211 __put_user(env
->regs
[2], &sc
->arm_r2
);
1212 __put_user(env
->regs
[3], &sc
->arm_r3
);
1213 __put_user(env
->regs
[4], &sc
->arm_r4
);
1214 __put_user(env
->regs
[5], &sc
->arm_r5
);
1215 __put_user(env
->regs
[6], &sc
->arm_r6
);
1216 __put_user(env
->regs
[7], &sc
->arm_r7
);
1217 __put_user(env
->regs
[8], &sc
->arm_r8
);
1218 __put_user(env
->regs
[9], &sc
->arm_r9
);
1219 __put_user(env
->regs
[10], &sc
->arm_r10
);
1220 __put_user(env
->regs
[11], &sc
->arm_fp
);
1221 __put_user(env
->regs
[12], &sc
->arm_ip
);
1222 __put_user(env
->regs
[13], &sc
->arm_sp
);
1223 __put_user(env
->regs
[14], &sc
->arm_lr
);
1224 __put_user(env
->regs
[15], &sc
->arm_pc
);
1225 #ifdef TARGET_CONFIG_CPU_32
1226 __put_user(cpsr_read(env
), &sc
->arm_cpsr
);
1229 __put_user(/* current->thread.trap_no */ 0, &sc
->trap_no
);
1230 __put_user(/* current->thread.error_code */ 0, &sc
->error_code
);
1231 __put_user(/* current->thread.address */ 0, &sc
->fault_address
);
1232 __put_user(mask
, &sc
->oldmask
);
1235 static inline abi_ulong
1236 get_sigframe(struct target_sigaction
*ka
, CPUState
*regs
, int framesize
)
1238 unsigned long sp
= regs
->regs
[13];
1241 * This is the X/Open sanctioned signal stack switching.
1243 if ((ka
->sa_flags
& TARGET_SA_ONSTACK
) && !sas_ss_flags(sp
))
1244 sp
= target_sigaltstack_used
.ss_sp
+ target_sigaltstack_used
.ss_size
;
1246 * ATPCS B01 mandates 8-byte alignment
1248 return (sp
- framesize
) & ~7;
1252 setup_return(CPUState
*env
, struct target_sigaction
*ka
,
1253 abi_ulong
*rc
, abi_ulong frame_addr
, int usig
, abi_ulong rc_addr
)
1255 abi_ulong handler
= ka
->_sa_handler
;
1257 int thumb
= handler
& 1;
1258 uint32_t cpsr
= cpsr_read(env
);
1267 if (ka
->sa_flags
& TARGET_SA_RESTORER
) {
1268 retcode
= ka
->sa_restorer
;
1270 unsigned int idx
= thumb
;
1272 if (ka
->sa_flags
& TARGET_SA_SIGINFO
)
1275 if (__put_user(retcodes
[idx
], rc
))
1278 retcode
= rc_addr
+ thumb
;
1281 env
->regs
[0] = usig
;
1282 env
->regs
[13] = frame_addr
;
1283 env
->regs
[14] = retcode
;
1284 env
->regs
[15] = handler
& (thumb ?
~1 : ~3);
1285 cpsr_write(env
, cpsr
, 0xffffffff);
1290 static abi_ulong
*setup_sigframe_v2_vfp(abi_ulong
*regspace
, CPUState
*env
)
1293 struct target_vfp_sigframe
*vfpframe
;
1294 vfpframe
= (struct target_vfp_sigframe
*)regspace
;
1295 __put_user(TARGET_VFP_MAGIC
, &vfpframe
->magic
);
1296 __put_user(sizeof(*vfpframe
), &vfpframe
->size
);
1297 for (i
= 0; i
< 32; i
++) {
1298 __put_user(float64_val(env
->vfp
.regs
[i
]), &vfpframe
->ufp
.fpregs
[i
]);
1300 __put_user(vfp_get_fpscr(env
), &vfpframe
->ufp
.fpscr
);
1301 __put_user(env
->vfp
.xregs
[ARM_VFP_FPEXC
], &vfpframe
->ufp_exc
.fpexc
);
1302 __put_user(env
->vfp
.xregs
[ARM_VFP_FPINST
], &vfpframe
->ufp_exc
.fpinst
);
1303 __put_user(env
->vfp
.xregs
[ARM_VFP_FPINST2
], &vfpframe
->ufp_exc
.fpinst2
);
1304 return (abi_ulong
*)(vfpframe
+1);
1307 static abi_ulong
*setup_sigframe_v2_iwmmxt(abi_ulong
*regspace
, CPUState
*env
)
1310 struct target_iwmmxt_sigframe
*iwmmxtframe
;
1311 iwmmxtframe
= (struct target_iwmmxt_sigframe
*)regspace
;
1312 __put_user(TARGET_IWMMXT_MAGIC
, &iwmmxtframe
->magic
);
1313 __put_user(sizeof(*iwmmxtframe
), &iwmmxtframe
->size
);
1314 for (i
= 0; i
< 16; i
++) {
1315 __put_user(env
->iwmmxt
.regs
[i
], &iwmmxtframe
->regs
[i
]);
1317 __put_user(env
->vfp
.xregs
[ARM_IWMMXT_wCSSF
], &iwmmxtframe
->wcssf
);
1318 __put_user(env
->vfp
.xregs
[ARM_IWMMXT_wCASF
], &iwmmxtframe
->wcssf
);
1319 __put_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR0
], &iwmmxtframe
->wcgr0
);
1320 __put_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR1
], &iwmmxtframe
->wcgr1
);
1321 __put_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR2
], &iwmmxtframe
->wcgr2
);
1322 __put_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR3
], &iwmmxtframe
->wcgr3
);
1323 return (abi_ulong
*)(iwmmxtframe
+1);
1326 static void setup_sigframe_v2(struct target_ucontext_v2
*uc
,
1327 target_sigset_t
*set
, CPUState
*env
)
1329 struct target_sigaltstack stack
;
1331 abi_ulong
*regspace
;
1333 /* Clear all the bits of the ucontext we don't use. */
1334 memset(uc
, 0, offsetof(struct target_ucontext_v2
, tuc_mcontext
));
1336 memset(&stack
, 0, sizeof(stack
));
1337 __put_user(target_sigaltstack_used
.ss_sp
, &stack
.ss_sp
);
1338 __put_user(target_sigaltstack_used
.ss_size
, &stack
.ss_size
);
1339 __put_user(sas_ss_flags(get_sp_from_cpustate(env
)), &stack
.ss_flags
);
1340 memcpy(&uc
->tuc_stack
, &stack
, sizeof(stack
));
1342 setup_sigcontext(&uc
->tuc_mcontext
, env
, set
->sig
[0]);
1343 /* Save coprocessor signal frame. */
1344 regspace
= uc
->tuc_regspace
;
1345 if (arm_feature(env
, ARM_FEATURE_VFP
)) {
1346 regspace
= setup_sigframe_v2_vfp(regspace
, env
);
1348 if (arm_feature(env
, ARM_FEATURE_IWMMXT
)) {
1349 regspace
= setup_sigframe_v2_iwmmxt(regspace
, env
);
1352 /* Write terminating magic word */
1353 __put_user(0, regspace
);
1355 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
1356 __put_user(set
->sig
[i
], &uc
->tuc_sigmask
.sig
[i
]);
1360 /* compare linux/arch/arm/kernel/signal.c:setup_frame() */
1361 static void setup_frame_v1(int usig
, struct target_sigaction
*ka
,
1362 target_sigset_t
*set
, CPUState
*regs
)
1364 struct sigframe_v1
*frame
;
1365 abi_ulong frame_addr
= get_sigframe(ka
, regs
, sizeof(*frame
));
1368 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
1371 setup_sigcontext(&frame
->sc
, regs
, set
->sig
[0]);
1373 for(i
= 1; i
< TARGET_NSIG_WORDS
; i
++) {
1374 if (__put_user(set
->sig
[i
], &frame
->extramask
[i
- 1]))
1378 setup_return(regs
, ka
, &frame
->retcode
, frame_addr
, usig
,
1379 frame_addr
+ offsetof(struct sigframe_v1
, retcode
));
1382 unlock_user_struct(frame
, frame_addr
, 1);
1385 static void setup_frame_v2(int usig
, struct target_sigaction
*ka
,
1386 target_sigset_t
*set
, CPUState
*regs
)
1388 struct sigframe_v2
*frame
;
1389 abi_ulong frame_addr
= get_sigframe(ka
, regs
, sizeof(*frame
));
1391 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
1394 setup_sigframe_v2(&frame
->uc
, set
, regs
);
1396 setup_return(regs
, ka
, &frame
->retcode
, frame_addr
, usig
,
1397 frame_addr
+ offsetof(struct sigframe_v2
, retcode
));
1399 unlock_user_struct(frame
, frame_addr
, 1);
1402 static void setup_frame(int usig
, struct target_sigaction
*ka
,
1403 target_sigset_t
*set
, CPUState
*regs
)
1405 if (get_osversion() >= 0x020612) {
1406 setup_frame_v2(usig
, ka
, set
, regs
);
1408 setup_frame_v1(usig
, ka
, set
, regs
);
1412 /* compare linux/arch/arm/kernel/signal.c:setup_rt_frame() */
1413 static void setup_rt_frame_v1(int usig
, struct target_sigaction
*ka
,
1414 target_siginfo_t
*info
,
1415 target_sigset_t
*set
, CPUState
*env
)
1417 struct rt_sigframe_v1
*frame
;
1418 abi_ulong frame_addr
= get_sigframe(ka
, env
, sizeof(*frame
));
1419 struct target_sigaltstack stack
;
1421 abi_ulong info_addr
, uc_addr
;
1423 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
1426 info_addr
= frame_addr
+ offsetof(struct rt_sigframe_v1
, info
);
1427 __put_user(info_addr
, &frame
->pinfo
);
1428 uc_addr
= frame_addr
+ offsetof(struct rt_sigframe_v1
, uc
);
1429 __put_user(uc_addr
, &frame
->puc
);
1430 copy_siginfo_to_user(&frame
->info
, info
);
1432 /* Clear all the bits of the ucontext we don't use. */
1433 memset(&frame
->uc
, 0, offsetof(struct target_ucontext_v1
, tuc_mcontext
));
1435 memset(&stack
, 0, sizeof(stack
));
1436 __put_user(target_sigaltstack_used
.ss_sp
, &stack
.ss_sp
);
1437 __put_user(target_sigaltstack_used
.ss_size
, &stack
.ss_size
);
1438 __put_user(sas_ss_flags(get_sp_from_cpustate(env
)), &stack
.ss_flags
);
1439 memcpy(&frame
->uc
.tuc_stack
, &stack
, sizeof(stack
));
1441 setup_sigcontext(&frame
->uc
.tuc_mcontext
, env
, set
->sig
[0]);
1442 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
1443 if (__put_user(set
->sig
[i
], &frame
->uc
.tuc_sigmask
.sig
[i
]))
1447 setup_return(env
, ka
, &frame
->retcode
, frame_addr
, usig
,
1448 frame_addr
+ offsetof(struct rt_sigframe_v1
, retcode
));
1450 env
->regs
[1] = info_addr
;
1451 env
->regs
[2] = uc_addr
;
1454 unlock_user_struct(frame
, frame_addr
, 1);
1457 static void setup_rt_frame_v2(int usig
, struct target_sigaction
*ka
,
1458 target_siginfo_t
*info
,
1459 target_sigset_t
*set
, CPUState
*env
)
1461 struct rt_sigframe_v2
*frame
;
1462 abi_ulong frame_addr
= get_sigframe(ka
, env
, sizeof(*frame
));
1463 abi_ulong info_addr
, uc_addr
;
1465 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
1468 info_addr
= frame_addr
+ offsetof(struct rt_sigframe_v2
, info
);
1469 uc_addr
= frame_addr
+ offsetof(struct rt_sigframe_v2
, uc
);
1470 copy_siginfo_to_user(&frame
->info
, info
);
1472 setup_sigframe_v2(&frame
->uc
, set
, env
);
1474 setup_return(env
, ka
, &frame
->retcode
, frame_addr
, usig
,
1475 frame_addr
+ offsetof(struct rt_sigframe_v2
, retcode
));
1477 env
->regs
[1] = info_addr
;
1478 env
->regs
[2] = uc_addr
;
1480 unlock_user_struct(frame
, frame_addr
, 1);
1483 static void setup_rt_frame(int usig
, struct target_sigaction
*ka
,
1484 target_siginfo_t
*info
,
1485 target_sigset_t
*set
, CPUState
*env
)
1487 if (get_osversion() >= 0x020612) {
1488 setup_rt_frame_v2(usig
, ka
, info
, set
, env
);
1490 setup_rt_frame_v1(usig
, ka
, info
, set
, env
);
1495 restore_sigcontext(CPUState
*env
, struct target_sigcontext
*sc
)
1500 __get_user_error(env
->regs
[0], &sc
->arm_r0
, err
);
1501 __get_user_error(env
->regs
[1], &sc
->arm_r1
, err
);
1502 __get_user_error(env
->regs
[2], &sc
->arm_r2
, err
);
1503 __get_user_error(env
->regs
[3], &sc
->arm_r3
, err
);
1504 __get_user_error(env
->regs
[4], &sc
->arm_r4
, err
);
1505 __get_user_error(env
->regs
[5], &sc
->arm_r5
, err
);
1506 __get_user_error(env
->regs
[6], &sc
->arm_r6
, err
);
1507 __get_user_error(env
->regs
[7], &sc
->arm_r7
, err
);
1508 __get_user_error(env
->regs
[8], &sc
->arm_r8
, err
);
1509 __get_user_error(env
->regs
[9], &sc
->arm_r9
, err
);
1510 __get_user_error(env
->regs
[10], &sc
->arm_r10
, err
);
1511 __get_user_error(env
->regs
[11], &sc
->arm_fp
, err
);
1512 __get_user_error(env
->regs
[12], &sc
->arm_ip
, err
);
1513 __get_user_error(env
->regs
[13], &sc
->arm_sp
, err
);
1514 __get_user_error(env
->regs
[14], &sc
->arm_lr
, err
);
1515 __get_user_error(env
->regs
[15], &sc
->arm_pc
, err
);
1516 #ifdef TARGET_CONFIG_CPU_32
1517 __get_user_error(cpsr
, &sc
->arm_cpsr
, err
);
1518 cpsr_write(env
, cpsr
, CPSR_USER
| CPSR_EXEC
);
1521 err
|= !valid_user_regs(env
);
1526 static long do_sigreturn_v1(CPUState
*env
)
1528 abi_ulong frame_addr
;
1529 struct sigframe_v1
*frame
;
1530 target_sigset_t set
;
1535 * Since we stacked the signal on a 64-bit boundary,
1536 * then 'sp' should be word aligned here. If it's
1537 * not, then the user is trying to mess with us.
1539 if (env
->regs
[13] & 7)
1542 frame_addr
= env
->regs
[13];
1543 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
1546 if (__get_user(set
.sig
[0], &frame
->sc
.oldmask
))
1548 for(i
= 1; i
< TARGET_NSIG_WORDS
; i
++) {
1549 if (__get_user(set
.sig
[i
], &frame
->extramask
[i
- 1]))
1553 target_to_host_sigset_internal(&host_set
, &set
);
1554 sigprocmask(SIG_SETMASK
, &host_set
, NULL
);
1556 if (restore_sigcontext(env
, &frame
->sc
))
1560 /* Send SIGTRAP if we're single-stepping */
1561 if (ptrace_cancel_bpt(current
))
1562 send_sig(SIGTRAP
, current
, 1);
1564 unlock_user_struct(frame
, frame_addr
, 0);
1565 return env
->regs
[0];
1568 unlock_user_struct(frame
, frame_addr
, 0);
1569 force_sig(TARGET_SIGSEGV
/* , current */);
1573 static abi_ulong
*restore_sigframe_v2_vfp(CPUState
*env
, abi_ulong
*regspace
)
1576 abi_ulong magic
, sz
;
1577 uint32_t fpscr
, fpexc
;
1578 struct target_vfp_sigframe
*vfpframe
;
1579 vfpframe
= (struct target_vfp_sigframe
*)regspace
;
1581 __get_user(magic
, &vfpframe
->magic
);
1582 __get_user(sz
, &vfpframe
->size
);
1583 if (magic
!= TARGET_VFP_MAGIC
|| sz
!= sizeof(*vfpframe
)) {
1586 for (i
= 0; i
< 32; i
++) {
1587 __get_user(float64_val(env
->vfp
.regs
[i
]), &vfpframe
->ufp
.fpregs
[i
]);
1589 __get_user(fpscr
, &vfpframe
->ufp
.fpscr
);
1590 vfp_set_fpscr(env
, fpscr
);
1591 __get_user(fpexc
, &vfpframe
->ufp_exc
.fpexc
);
1592 /* Sanitise FPEXC: ensure VFP is enabled, FPINST2 is invalid
1593 * and the exception flag is cleared
1596 fpexc
&= ~((1 << 31) | (1 << 28));
1597 env
->vfp
.xregs
[ARM_VFP_FPEXC
] = fpexc
;
1598 __get_user(env
->vfp
.xregs
[ARM_VFP_FPINST
], &vfpframe
->ufp_exc
.fpinst
);
1599 __get_user(env
->vfp
.xregs
[ARM_VFP_FPINST2
], &vfpframe
->ufp_exc
.fpinst2
);
1600 return (abi_ulong
*)(vfpframe
+ 1);
1603 static abi_ulong
*restore_sigframe_v2_iwmmxt(CPUState
*env
, abi_ulong
*regspace
)
1606 abi_ulong magic
, sz
;
1607 struct target_iwmmxt_sigframe
*iwmmxtframe
;
1608 iwmmxtframe
= (struct target_iwmmxt_sigframe
*)regspace
;
1610 __get_user(magic
, &iwmmxtframe
->magic
);
1611 __get_user(sz
, &iwmmxtframe
->size
);
1612 if (magic
!= TARGET_IWMMXT_MAGIC
|| sz
!= sizeof(*iwmmxtframe
)) {
1615 for (i
= 0; i
< 16; i
++) {
1616 __get_user(env
->iwmmxt
.regs
[i
], &iwmmxtframe
->regs
[i
]);
1618 __get_user(env
->vfp
.xregs
[ARM_IWMMXT_wCSSF
], &iwmmxtframe
->wcssf
);
1619 __get_user(env
->vfp
.xregs
[ARM_IWMMXT_wCASF
], &iwmmxtframe
->wcssf
);
1620 __get_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR0
], &iwmmxtframe
->wcgr0
);
1621 __get_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR1
], &iwmmxtframe
->wcgr1
);
1622 __get_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR2
], &iwmmxtframe
->wcgr2
);
1623 __get_user(env
->vfp
.xregs
[ARM_IWMMXT_wCGR3
], &iwmmxtframe
->wcgr3
);
1624 return (abi_ulong
*)(iwmmxtframe
+ 1);
1627 static int do_sigframe_return_v2(CPUState
*env
, target_ulong frame_addr
,
1628 struct target_ucontext_v2
*uc
)
1631 abi_ulong
*regspace
;
1633 target_to_host_sigset(&host_set
, &uc
->tuc_sigmask
);
1634 sigprocmask(SIG_SETMASK
, &host_set
, NULL
);
1636 if (restore_sigcontext(env
, &uc
->tuc_mcontext
))
1639 /* Restore coprocessor signal frame */
1640 regspace
= uc
->tuc_regspace
;
1641 if (arm_feature(env
, ARM_FEATURE_VFP
)) {
1642 regspace
= restore_sigframe_v2_vfp(env
, regspace
);
1647 if (arm_feature(env
, ARM_FEATURE_IWMMXT
)) {
1648 regspace
= restore_sigframe_v2_iwmmxt(env
, regspace
);
1654 if (do_sigaltstack(frame_addr
+ offsetof(struct target_ucontext_v2
, tuc_stack
), 0, get_sp_from_cpustate(env
)) == -EFAULT
)
1658 /* Send SIGTRAP if we're single-stepping */
1659 if (ptrace_cancel_bpt(current
))
1660 send_sig(SIGTRAP
, current
, 1);
1666 static long do_sigreturn_v2(CPUState
*env
)
1668 abi_ulong frame_addr
;
1669 struct sigframe_v2
*frame
;
1672 * Since we stacked the signal on a 64-bit boundary,
1673 * then 'sp' should be word aligned here. If it's
1674 * not, then the user is trying to mess with us.
1676 if (env
->regs
[13] & 7)
1679 frame_addr
= env
->regs
[13];
1680 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
1683 if (do_sigframe_return_v2(env
, frame_addr
, &frame
->uc
))
1686 unlock_user_struct(frame
, frame_addr
, 0);
1687 return env
->regs
[0];
1690 unlock_user_struct(frame
, frame_addr
, 0);
1691 force_sig(TARGET_SIGSEGV
/* , current */);
1695 long do_sigreturn(CPUState
*env
)
1697 if (get_osversion() >= 0x020612) {
1698 return do_sigreturn_v2(env
);
1700 return do_sigreturn_v1(env
);
1704 static long do_rt_sigreturn_v1(CPUState
*env
)
1706 abi_ulong frame_addr
;
1707 struct rt_sigframe_v1
*frame
;
1711 * Since we stacked the signal on a 64-bit boundary,
1712 * then 'sp' should be word aligned here. If it's
1713 * not, then the user is trying to mess with us.
1715 if (env
->regs
[13] & 7)
1718 frame_addr
= env
->regs
[13];
1719 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
1722 target_to_host_sigset(&host_set
, &frame
->uc
.tuc_sigmask
);
1723 sigprocmask(SIG_SETMASK
, &host_set
, NULL
);
1725 if (restore_sigcontext(env
, &frame
->uc
.tuc_mcontext
))
1728 if (do_sigaltstack(frame_addr
+ offsetof(struct rt_sigframe_v1
, uc
.tuc_stack
), 0, get_sp_from_cpustate(env
)) == -EFAULT
)
1732 /* Send SIGTRAP if we're single-stepping */
1733 if (ptrace_cancel_bpt(current
))
1734 send_sig(SIGTRAP
, current
, 1);
1736 unlock_user_struct(frame
, frame_addr
, 0);
1737 return env
->regs
[0];
1740 unlock_user_struct(frame
, frame_addr
, 0);
1741 force_sig(TARGET_SIGSEGV
/* , current */);
1745 static long do_rt_sigreturn_v2(CPUState
*env
)
1747 abi_ulong frame_addr
;
1748 struct rt_sigframe_v2
*frame
;
1751 * Since we stacked the signal on a 64-bit boundary,
1752 * then 'sp' should be word aligned here. If it's
1753 * not, then the user is trying to mess with us.
1755 if (env
->regs
[13] & 7)
1758 frame_addr
= env
->regs
[13];
1759 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
1762 if (do_sigframe_return_v2(env
, frame_addr
, &frame
->uc
))
1765 unlock_user_struct(frame
, frame_addr
, 0);
1766 return env
->regs
[0];
1769 unlock_user_struct(frame
, frame_addr
, 0);
1770 force_sig(TARGET_SIGSEGV
/* , current */);
1774 long do_rt_sigreturn(CPUState
*env
)
1776 if (get_osversion() >= 0x020612) {
1777 return do_rt_sigreturn_v2(env
);
1779 return do_rt_sigreturn_v1(env
);
1783 #elif defined(TARGET_SPARC)
1785 #define __SUNOS_MAXWIN 31
1787 /* This is what SunOS does, so shall I. */
1788 struct target_sigcontext
{
1789 abi_ulong sigc_onstack
; /* state to restore */
1791 abi_ulong sigc_mask
; /* sigmask to restore */
1792 abi_ulong sigc_sp
; /* stack pointer */
1793 abi_ulong sigc_pc
; /* program counter */
1794 abi_ulong sigc_npc
; /* next program counter */
1795 abi_ulong sigc_psr
; /* for condition codes etc */
1796 abi_ulong sigc_g1
; /* User uses these two registers */
1797 abi_ulong sigc_o0
; /* within the trampoline code. */
1799 /* Now comes information regarding the users window set
1800 * at the time of the signal.
1802 abi_ulong sigc_oswins
; /* outstanding windows */
1804 /* stack ptrs for each regwin buf */
1805 char *sigc_spbuf
[__SUNOS_MAXWIN
];
1807 /* Windows to restore after signal */
1809 abi_ulong locals
[8];
1811 } sigc_wbuf
[__SUNOS_MAXWIN
];
1813 /* A Sparc stack frame */
1814 struct sparc_stackf
{
1815 abi_ulong locals
[8];
1817 /* It's simpler to treat fp and callers_pc as elements of ins[]
1818 * since we never need to access them ourselves.
1822 abi_ulong xxargs
[1];
1831 abi_ulong u_regs
[16]; /* globals and ins */
1837 unsigned long si_float_regs
[32];
1838 unsigned long si_fsr
;
1839 unsigned long si_fpqdepth
;
1841 unsigned long *insn_addr
;
1844 } qemu_siginfo_fpu_t
;
1847 struct target_signal_frame
{
1848 struct sparc_stackf ss
;
1851 abi_ulong insns
[2] __attribute__ ((aligned (8)));
1852 abi_ulong extramask
[TARGET_NSIG_WORDS
- 1];
1853 abi_ulong extra_size
; /* Should be 0 */
1854 qemu_siginfo_fpu_t fpu_state
;
1856 struct target_rt_signal_frame
{
1857 struct sparc_stackf ss
;
1862 unsigned int insns
[2];
1864 unsigned int extra_size
; /* Should be 0 */
1865 qemu_siginfo_fpu_t fpu_state
;
1879 #define UREG_FP UREG_I6
1880 #define UREG_SP UREG_O6
1882 static inline abi_ulong
get_sigframe(struct target_sigaction
*sa
,
1883 CPUState
*env
, unsigned long framesize
)
1887 sp
= env
->regwptr
[UREG_FP
];
1889 /* This is the X/Open sanctioned signal stack switching. */
1890 if (sa
->sa_flags
& TARGET_SA_ONSTACK
) {
1891 if (!on_sig_stack(sp
)
1892 && !((target_sigaltstack_used
.ss_sp
+ target_sigaltstack_used
.ss_size
) & 7))
1893 sp
= target_sigaltstack_used
.ss_sp
+ target_sigaltstack_used
.ss_size
;
1895 return sp
- framesize
;
1899 setup___siginfo(__siginfo_t
*si
, CPUState
*env
, abi_ulong mask
)
1903 err
|= __put_user(env
->psr
, &si
->si_regs
.psr
);
1904 err
|= __put_user(env
->pc
, &si
->si_regs
.pc
);
1905 err
|= __put_user(env
->npc
, &si
->si_regs
.npc
);
1906 err
|= __put_user(env
->y
, &si
->si_regs
.y
);
1907 for (i
=0; i
< 8; i
++) {
1908 err
|= __put_user(env
->gregs
[i
], &si
->si_regs
.u_regs
[i
]);
1910 for (i
=0; i
< 8; i
++) {
1911 err
|= __put_user(env
->regwptr
[UREG_I0
+ i
], &si
->si_regs
.u_regs
[i
+8]);
1913 err
|= __put_user(mask
, &si
->si_mask
);
1919 setup_sigcontext(struct target_sigcontext
*sc
, /*struct _fpstate *fpstate,*/
1920 CPUState
*env
, unsigned long mask
)
1924 err
|= __put_user(mask
, &sc
->sigc_mask
);
1925 err
|= __put_user(env
->regwptr
[UREG_SP
], &sc
->sigc_sp
);
1926 err
|= __put_user(env
->pc
, &sc
->sigc_pc
);
1927 err
|= __put_user(env
->npc
, &sc
->sigc_npc
);
1928 err
|= __put_user(env
->psr
, &sc
->sigc_psr
);
1929 err
|= __put_user(env
->gregs
[1], &sc
->sigc_g1
);
1930 err
|= __put_user(env
->regwptr
[UREG_O0
], &sc
->sigc_o0
);
1935 #define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
1937 static void setup_frame(int sig
, struct target_sigaction
*ka
,
1938 target_sigset_t
*set
, CPUState
*env
)
1941 struct target_signal_frame
*sf
;
1942 int sigframe_size
, err
, i
;
1944 /* 1. Make sure everything is clean */
1945 //synchronize_user_stack();
1947 sigframe_size
= NF_ALIGNEDSZ
;
1948 sf_addr
= get_sigframe(ka
, env
, sigframe_size
);
1950 sf
= lock_user(VERIFY_WRITE
, sf_addr
,
1951 sizeof(struct target_signal_frame
), 0);
1955 //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
1957 if (invalid_frame_pointer(sf
, sigframe_size
))
1958 goto sigill_and_return
;
1960 /* 2. Save the current process state */
1961 err
= setup___siginfo(&sf
->info
, env
, set
->sig
[0]);
1962 err
|= __put_user(0, &sf
->extra_size
);
1964 //err |= save_fpu_state(regs, &sf->fpu_state);
1965 //err |= __put_user(&sf->fpu_state, &sf->fpu_save);
1967 err
|= __put_user(set
->sig
[0], &sf
->info
.si_mask
);
1968 for (i
= 0; i
< TARGET_NSIG_WORDS
- 1; i
++) {
1969 err
|= __put_user(set
->sig
[i
+ 1], &sf
->extramask
[i
]);
1972 for (i
= 0; i
< 8; i
++) {
1973 err
|= __put_user(env
->regwptr
[i
+ UREG_L0
], &sf
->ss
.locals
[i
]);
1975 for (i
= 0; i
< 8; i
++) {
1976 err
|= __put_user(env
->regwptr
[i
+ UREG_I0
], &sf
->ss
.ins
[i
]);
1981 /* 3. signal handler back-trampoline and parameters */
1982 env
->regwptr
[UREG_FP
] = sf_addr
;
1983 env
->regwptr
[UREG_I0
] = sig
;
1984 env
->regwptr
[UREG_I1
] = sf_addr
+
1985 offsetof(struct target_signal_frame
, info
);
1986 env
->regwptr
[UREG_I2
] = sf_addr
+
1987 offsetof(struct target_signal_frame
, info
);
1989 /* 4. signal handler */
1990 env
->pc
= ka
->_sa_handler
;
1991 env
->npc
= (env
->pc
+ 4);
1992 /* 5. return to kernel instructions */
1993 if (ka
->sa_restorer
)
1994 env
->regwptr
[UREG_I7
] = ka
->sa_restorer
;
1998 env
->regwptr
[UREG_I7
] = sf_addr
+
1999 offsetof(struct target_signal_frame
, insns
) - 2 * 4;
2001 /* mov __NR_sigreturn, %g1 */
2003 err
|= __put_user(val32
, &sf
->insns
[0]);
2007 err
|= __put_user(val32
, &sf
->insns
[1]);
2011 /* Flush instruction space. */
2012 //flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
2015 unlock_user(sf
, sf_addr
, sizeof(struct target_signal_frame
));
2019 force_sig(TARGET_SIGILL
);
2022 //fprintf(stderr, "force_sig\n");
2023 unlock_user(sf
, sf_addr
, sizeof(struct target_signal_frame
));
2024 force_sig(TARGET_SIGSEGV
);
2027 restore_fpu_state(CPUState
*env
, qemu_siginfo_fpu_t
*fpu
)
2032 if (current
->flags
& PF_USEDFPU
)
2033 regs
->psr
&= ~PSR_EF
;
2035 if (current
== last_task_used_math
) {
2036 last_task_used_math
= 0;
2037 regs
->psr
&= ~PSR_EF
;
2040 current
->used_math
= 1;
2041 current
->flags
&= ~PF_USEDFPU
;
2044 if (verify_area (VERIFY_READ
, fpu
, sizeof(*fpu
)))
2049 /* XXX: incorrect */
2050 err
= __copy_from_user(&env
->fpr
[0], &fpu
->si_float_regs
[0],
2051 (sizeof(unsigned long) * 32));
2053 err
|= __get_user(env
->fsr
, &fpu
->si_fsr
);
2055 err
|= __get_user(current
->thread
.fpqdepth
, &fpu
->si_fpqdepth
);
2056 if (current
->thread
.fpqdepth
!= 0)
2057 err
|= __copy_from_user(¤t
->thread
.fpqueue
[0],
2058 &fpu
->si_fpqueue
[0],
2059 ((sizeof(unsigned long) +
2060 (sizeof(unsigned long *)))*16));
2066 static void setup_rt_frame(int sig
, struct target_sigaction
*ka
,
2067 target_siginfo_t
*info
,
2068 target_sigset_t
*set
, CPUState
*env
)
2070 fprintf(stderr
, "setup_rt_frame: not implemented\n");
2073 long do_sigreturn(CPUState
*env
)
2076 struct target_signal_frame
*sf
;
2077 uint32_t up_psr
, pc
, npc
;
2078 target_sigset_t set
;
2082 sf_addr
= env
->regwptr
[UREG_FP
];
2083 if (!lock_user_struct(VERIFY_READ
, sf
, sf_addr
, 1))
2086 fprintf(stderr
, "sigreturn\n");
2087 fprintf(stderr
, "sf: %x pc %x fp %x sp %x\n", sf
, env
->pc
, env
->regwptr
[UREG_FP
], env
->regwptr
[UREG_SP
]);
2089 //cpu_dump_state(env, stderr, fprintf, 0);
2091 /* 1. Make sure we are not getting garbage from the user */
2096 err
= __get_user(pc
, &sf
->info
.si_regs
.pc
);
2097 err
|= __get_user(npc
, &sf
->info
.si_regs
.npc
);
2102 /* 2. Restore the state */
2103 err
|= __get_user(up_psr
, &sf
->info
.si_regs
.psr
);
2105 /* User can only change condition codes and FPU enabling in %psr. */
2106 env
->psr
= (up_psr
& (PSR_ICC
/* | PSR_EF */))
2107 | (env
->psr
& ~(PSR_ICC
/* | PSR_EF */));
2111 err
|= __get_user(env
->y
, &sf
->info
.si_regs
.y
);
2112 for (i
=0; i
< 8; i
++) {
2113 err
|= __get_user(env
->gregs
[i
], &sf
->info
.si_regs
.u_regs
[i
]);
2115 for (i
=0; i
< 8; i
++) {
2116 err
|= __get_user(env
->regwptr
[i
+ UREG_I0
], &sf
->info
.si_regs
.u_regs
[i
+8]);
2119 /* FIXME: implement FPU save/restore:
2120 * __get_user(fpu_save, &sf->fpu_save);
2122 * err |= restore_fpu_state(env, fpu_save);
2125 /* This is pretty much atomic, no amount locking would prevent
2126 * the races which exist anyways.
2128 err
|= __get_user(set
.sig
[0], &sf
->info
.si_mask
);
2129 for(i
= 1; i
< TARGET_NSIG_WORDS
; i
++) {
2130 err
|= (__get_user(set
.sig
[i
], &sf
->extramask
[i
- 1]));
2133 target_to_host_sigset_internal(&host_set
, &set
);
2134 sigprocmask(SIG_SETMASK
, &host_set
, NULL
);
2138 unlock_user_struct(sf
, sf_addr
, 0);
2139 return env
->regwptr
[0];
2142 unlock_user_struct(sf
, sf_addr
, 0);
2143 force_sig(TARGET_SIGSEGV
);
2146 long do_rt_sigreturn(CPUState
*env
)
2148 fprintf(stderr
, "do_rt_sigreturn: not implemented\n");
2149 return -TARGET_ENOSYS
;
2152 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
2174 typedef abi_ulong target_mc_greg_t
;
2175 typedef target_mc_greg_t target_mc_gregset_t
[MC_NGREG
];
2177 struct target_mc_fq
{
2178 abi_ulong
*mcfq_addr
;
2182 struct target_mc_fpu
{
2186 //uint128_t qregs[16];
2188 abi_ulong mcfpu_fsr
;
2189 abi_ulong mcfpu_fprs
;
2190 abi_ulong mcfpu_gsr
;
2191 struct target_mc_fq
*mcfpu_fq
;
2192 unsigned char mcfpu_qcnt
;
2193 unsigned char mcfpu_qentsz
;
2194 unsigned char mcfpu_enab
;
2196 typedef struct target_mc_fpu target_mc_fpu_t
;
2199 target_mc_gregset_t mc_gregs
;
2200 target_mc_greg_t mc_fp
;
2201 target_mc_greg_t mc_i7
;
2202 target_mc_fpu_t mc_fpregs
;
2203 } target_mcontext_t
;
2205 struct target_ucontext
{
2206 struct target_ucontext
*tuc_link
;
2207 abi_ulong tuc_flags
;
2208 target_sigset_t tuc_sigmask
;
2209 target_mcontext_t tuc_mcontext
;
2212 /* A V9 register window */
2213 struct target_reg_window
{
2214 abi_ulong locals
[8];
2218 #define TARGET_STACK_BIAS 2047
2220 /* {set, get}context() needed for 64-bit SparcLinux userland. */
2221 void sparc64_set_context(CPUSPARCState
*env
)
2224 struct target_ucontext
*ucp
;
2225 target_mc_gregset_t
*grp
;
2226 abi_ulong pc
, npc
, tstate
;
2227 abi_ulong fp
, i7
, w_addr
;
2231 ucp_addr
= env
->regwptr
[UREG_I0
];
2232 if (!lock_user_struct(VERIFY_READ
, ucp
, ucp_addr
, 1))
2234 grp
= &ucp
->tuc_mcontext
.mc_gregs
;
2235 err
= __get_user(pc
, &((*grp
)[MC_PC
]));
2236 err
|= __get_user(npc
, &((*grp
)[MC_NPC
]));
2237 if (err
|| ((pc
| npc
) & 3))
2239 if (env
->regwptr
[UREG_I1
]) {
2240 target_sigset_t target_set
;
2243 if (TARGET_NSIG_WORDS
== 1) {
2244 if (__get_user(target_set
.sig
[0], &ucp
->tuc_sigmask
.sig
[0]))
2247 abi_ulong
*src
, *dst
;
2248 src
= ucp
->tuc_sigmask
.sig
;
2249 dst
= target_set
.sig
;
2250 for (i
= 0; i
< sizeof(target_sigset_t
) / sizeof(abi_ulong
);
2252 err
|= __get_user(*dst
, src
);
2256 target_to_host_sigset_internal(&set
, &target_set
);
2257 sigprocmask(SIG_SETMASK
, &set
, NULL
);
2261 err
|= __get_user(env
->y
, &((*grp
)[MC_Y
]));
2262 err
|= __get_user(tstate
, &((*grp
)[MC_TSTATE
]));
2263 env
->asi
= (tstate
>> 24) & 0xff;
2264 cpu_put_ccr(env
, tstate
>> 32);
2265 cpu_put_cwp64(env
, tstate
& 0x1f);
2266 err
|= __get_user(env
->gregs
[1], (&(*grp
)[MC_G1
]));
2267 err
|= __get_user(env
->gregs
[2], (&(*grp
)[MC_G2
]));
2268 err
|= __get_user(env
->gregs
[3], (&(*grp
)[MC_G3
]));
2269 err
|= __get_user(env
->gregs
[4], (&(*grp
)[MC_G4
]));
2270 err
|= __get_user(env
->gregs
[5], (&(*grp
)[MC_G5
]));
2271 err
|= __get_user(env
->gregs
[6], (&(*grp
)[MC_G6
]));
2272 err
|= __get_user(env
->gregs
[7], (&(*grp
)[MC_G7
]));
2273 err
|= __get_user(env
->regwptr
[UREG_I0
], (&(*grp
)[MC_O0
]));
2274 err
|= __get_user(env
->regwptr
[UREG_I1
], (&(*grp
)[MC_O1
]));
2275 err
|= __get_user(env
->regwptr
[UREG_I2
], (&(*grp
)[MC_O2
]));
2276 err
|= __get_user(env
->regwptr
[UREG_I3
], (&(*grp
)[MC_O3
]));
2277 err
|= __get_user(env
->regwptr
[UREG_I4
], (&(*grp
)[MC_O4
]));
2278 err
|= __get_user(env
->regwptr
[UREG_I5
], (&(*grp
)[MC_O5
]));
2279 err
|= __get_user(env
->regwptr
[UREG_I6
], (&(*grp
)[MC_O6
]));
2280 err
|= __get_user(env
->regwptr
[UREG_I7
], (&(*grp
)[MC_O7
]));
2282 err
|= __get_user(fp
, &(ucp
->tuc_mcontext
.mc_fp
));
2283 err
|= __get_user(i7
, &(ucp
->tuc_mcontext
.mc_i7
));
2285 w_addr
= TARGET_STACK_BIAS
+env
->regwptr
[UREG_I6
];
2286 if (put_user(fp
, w_addr
+ offsetof(struct target_reg_window
, ins
[6]),
2289 if (put_user(i7
, w_addr
+ offsetof(struct target_reg_window
, ins
[7]),
2292 /* FIXME this does not match how the kernel handles the FPU in
2293 * its sparc64_set_context implementation. In particular the FPU
2294 * is only restored if fenab is non-zero in:
2295 * __get_user(fenab, &(ucp->tuc_mcontext.mc_fpregs.mcfpu_enab));
2297 err
|= __get_user(env
->fprs
, &(ucp
->tuc_mcontext
.mc_fpregs
.mcfpu_fprs
));
2299 uint32_t *src
= ucp
->tuc_mcontext
.mc_fpregs
.mcfpu_fregs
.sregs
;
2300 for (i
= 0; i
< 64; i
++, src
++) {
2302 err
|= __get_user(env
->fpr
[i
/2].l
.lower
, src
);
2304 err
|= __get_user(env
->fpr
[i
/2].l
.upper
, src
);
2308 err
|= __get_user(env
->fsr
,
2309 &(ucp
->tuc_mcontext
.mc_fpregs
.mcfpu_fsr
));
2310 err
|= __get_user(env
->gsr
,
2311 &(ucp
->tuc_mcontext
.mc_fpregs
.mcfpu_gsr
));
2314 unlock_user_struct(ucp
, ucp_addr
, 0);
2317 unlock_user_struct(ucp
, ucp_addr
, 0);
2318 force_sig(TARGET_SIGSEGV
);
2321 void sparc64_get_context(CPUSPARCState
*env
)
2324 struct target_ucontext
*ucp
;
2325 target_mc_gregset_t
*grp
;
2326 target_mcontext_t
*mcp
;
2327 abi_ulong fp
, i7
, w_addr
;
2330 target_sigset_t target_set
;
2333 ucp_addr
= env
->regwptr
[UREG_I0
];
2334 if (!lock_user_struct(VERIFY_WRITE
, ucp
, ucp_addr
, 0))
2337 mcp
= &ucp
->tuc_mcontext
;
2338 grp
= &mcp
->mc_gregs
;
2340 /* Skip over the trap instruction, first. */
2346 sigprocmask(0, NULL
, &set
);
2347 host_to_target_sigset_internal(&target_set
, &set
);
2348 if (TARGET_NSIG_WORDS
== 1) {
2349 err
|= __put_user(target_set
.sig
[0],
2350 (abi_ulong
*)&ucp
->tuc_sigmask
);
2352 abi_ulong
*src
, *dst
;
2353 src
= target_set
.sig
;
2354 dst
= ucp
->tuc_sigmask
.sig
;
2355 for (i
= 0; i
< sizeof(target_sigset_t
) / sizeof(abi_ulong
);
2357 err
|= __put_user(*src
, dst
);
2362 /* XXX: tstate must be saved properly */
2363 // err |= __put_user(env->tstate, &((*grp)[MC_TSTATE]));
2364 err
|= __put_user(env
->pc
, &((*grp
)[MC_PC
]));
2365 err
|= __put_user(env
->npc
, &((*grp
)[MC_NPC
]));
2366 err
|= __put_user(env
->y
, &((*grp
)[MC_Y
]));
2367 err
|= __put_user(env
->gregs
[1], &((*grp
)[MC_G1
]));
2368 err
|= __put_user(env
->gregs
[2], &((*grp
)[MC_G2
]));
2369 err
|= __put_user(env
->gregs
[3], &((*grp
)[MC_G3
]));
2370 err
|= __put_user(env
->gregs
[4], &((*grp
)[MC_G4
]));
2371 err
|= __put_user(env
->gregs
[5], &((*grp
)[MC_G5
]));
2372 err
|= __put_user(env
->gregs
[6], &((*grp
)[MC_G6
]));
2373 err
|= __put_user(env
->gregs
[7], &((*grp
)[MC_G7
]));
2374 err
|= __put_user(env
->regwptr
[UREG_I0
], &((*grp
)[MC_O0
]));
2375 err
|= __put_user(env
->regwptr
[UREG_I1
], &((*grp
)[MC_O1
]));
2376 err
|= __put_user(env
->regwptr
[UREG_I2
], &((*grp
)[MC_O2
]));
2377 err
|= __put_user(env
->regwptr
[UREG_I3
], &((*grp
)[MC_O3
]));
2378 err
|= __put_user(env
->regwptr
[UREG_I4
], &((*grp
)[MC_O4
]));
2379 err
|= __put_user(env
->regwptr
[UREG_I5
], &((*grp
)[MC_O5
]));
2380 err
|= __put_user(env
->regwptr
[UREG_I6
], &((*grp
)[MC_O6
]));
2381 err
|= __put_user(env
->regwptr
[UREG_I7
], &((*grp
)[MC_O7
]));
2383 w_addr
= TARGET_STACK_BIAS
+env
->regwptr
[UREG_I6
];
2385 if (get_user(fp
, w_addr
+ offsetof(struct target_reg_window
, ins
[6]),
2388 if (get_user(i7
, w_addr
+ offsetof(struct target_reg_window
, ins
[7]),
2391 err
|= __put_user(fp
, &(mcp
->mc_fp
));
2392 err
|= __put_user(i7
, &(mcp
->mc_i7
));
2395 uint32_t *dst
= ucp
->tuc_mcontext
.mc_fpregs
.mcfpu_fregs
.sregs
;
2396 for (i
= 0; i
< 64; i
++, dst
++) {
2398 err
|= __put_user(env
->fpr
[i
/2].l
.lower
, dst
);
2400 err
|= __put_user(env
->fpr
[i
/2].l
.upper
, dst
);
2404 err
|= __put_user(env
->fsr
, &(mcp
->mc_fpregs
.mcfpu_fsr
));
2405 err
|= __put_user(env
->gsr
, &(mcp
->mc_fpregs
.mcfpu_gsr
));
2406 err
|= __put_user(env
->fprs
, &(mcp
->mc_fpregs
.mcfpu_fprs
));
2410 unlock_user_struct(ucp
, ucp_addr
, 1);
2413 unlock_user_struct(ucp
, ucp_addr
, 1);
2414 force_sig(TARGET_SIGSEGV
);
2417 #elif defined(TARGET_ABI_MIPSN64)
2419 # warning signal handling not implemented
2421 static void setup_frame(int sig
, struct target_sigaction
*ka
,
2422 target_sigset_t
*set
, CPUState
*env
)
2424 fprintf(stderr
, "setup_frame: not implemented\n");
2427 static void setup_rt_frame(int sig
, struct target_sigaction
*ka
,
2428 target_siginfo_t
*info
,
2429 target_sigset_t
*set
, CPUState
*env
)
2431 fprintf(stderr
, "setup_rt_frame: not implemented\n");
2434 long do_sigreturn(CPUState
*env
)
2436 fprintf(stderr
, "do_sigreturn: not implemented\n");
2437 return -TARGET_ENOSYS
;
2440 long do_rt_sigreturn(CPUState
*env
)
2442 fprintf(stderr
, "do_rt_sigreturn: not implemented\n");
2443 return -TARGET_ENOSYS
;
2446 #elif defined(TARGET_ABI_MIPSN32)
2448 # warning signal handling not implemented
2450 static void setup_frame(int sig
, struct target_sigaction
*ka
,
2451 target_sigset_t
*set
, CPUState
*env
)
2453 fprintf(stderr
, "setup_frame: not implemented\n");
2456 static void setup_rt_frame(int sig
, struct target_sigaction
*ka
,
2457 target_siginfo_t
*info
,
2458 target_sigset_t
*set
, CPUState
*env
)
2460 fprintf(stderr
, "setup_rt_frame: not implemented\n");
2463 long do_sigreturn(CPUState
*env
)
2465 fprintf(stderr
, "do_sigreturn: not implemented\n");
2466 return -TARGET_ENOSYS
;
2469 long do_rt_sigreturn(CPUState
*env
)
2471 fprintf(stderr
, "do_rt_sigreturn: not implemented\n");
2472 return -TARGET_ENOSYS
;
2475 #elif defined(TARGET_ABI_MIPSO32)
2477 struct target_sigcontext
{
2478 uint32_t sc_regmask
; /* Unused */
2481 uint64_t sc_regs
[32];
2482 uint64_t sc_fpregs
[32];
2483 uint32_t sc_ownedfp
; /* Unused */
2484 uint32_t sc_fpc_csr
;
2485 uint32_t sc_fpc_eir
; /* Unused */
2486 uint32_t sc_used_math
;
2487 uint32_t sc_dsp
; /* dsp status, was sc_ssflags */
2491 target_ulong sc_hi1
; /* Was sc_cause */
2492 target_ulong sc_lo1
; /* Was sc_badvaddr */
2493 target_ulong sc_hi2
; /* Was sc_sigset[4] */
2494 target_ulong sc_lo2
;
2495 target_ulong sc_hi3
;
2496 target_ulong sc_lo3
;
2500 uint32_t sf_ass
[4]; /* argument save space for o32 */
2501 uint32_t sf_code
[2]; /* signal trampoline */
2502 struct target_sigcontext sf_sc
;
2503 target_sigset_t sf_mask
;
2506 struct target_ucontext
{
2507 target_ulong tuc_flags
;
2508 target_ulong tuc_link
;
2509 target_stack_t tuc_stack
;
2511 struct target_sigcontext tuc_mcontext
;
2512 target_sigset_t tuc_sigmask
;
2515 struct target_rt_sigframe
{
2516 uint32_t rs_ass
[4]; /* argument save space for o32 */
2517 uint32_t rs_code
[2]; /* signal trampoline */
2518 struct target_siginfo rs_info
;
2519 struct target_ucontext rs_uc
;
2522 /* Install trampoline to jump back from signal handler */
2523 static inline int install_sigtramp(unsigned int *tramp
, unsigned int syscall
)
2528 * Set up the return code ...
2530 * li v0, __NR__foo_sigreturn
2534 err
= __put_user(0x24020000 + syscall
, tramp
+ 0);
2535 err
|= __put_user(0x0000000c , tramp
+ 1);
2536 /* flush_cache_sigtramp((unsigned long) tramp); */
2541 setup_sigcontext(CPUState
*regs
, struct target_sigcontext
*sc
)
2545 err
|= __put_user(regs
->active_tc
.PC
, &sc
->sc_pc
);
2547 #define save_gp_reg(i) do { \
2548 err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \
2550 __put_user(0, &sc
->sc_regs
[0]); save_gp_reg(1); save_gp_reg(2);
2551 save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6);
2552 save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10);
2553 save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
2554 save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18);
2555 save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22);
2556 save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
2557 save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30);
2561 err
|= __put_user(regs
->active_tc
.HI
[0], &sc
->sc_mdhi
);
2562 err
|= __put_user(regs
->active_tc
.LO
[0], &sc
->sc_mdlo
);
2564 /* Not used yet, but might be useful if we ever have DSP suppport */
2567 err
|= __put_user(mfhi1(), &sc
->sc_hi1
);
2568 err
|= __put_user(mflo1(), &sc
->sc_lo1
);
2569 err
|= __put_user(mfhi2(), &sc
->sc_hi2
);
2570 err
|= __put_user(mflo2(), &sc
->sc_lo2
);
2571 err
|= __put_user(mfhi3(), &sc
->sc_hi3
);
2572 err
|= __put_user(mflo3(), &sc
->sc_lo3
);
2573 err
|= __put_user(rddsp(DSP_MASK
), &sc
->sc_dsp
);
2575 /* same with 64 bit */
2577 err
|= __put_user(regs
->hi
, &sc
->sc_hi
[0]);
2578 err
|= __put_user(regs
->lo
, &sc
->sc_lo
[0]);
2580 err
|= __put_user(mfhi1(), &sc
->sc_hi
[1]);
2581 err
|= __put_user(mflo1(), &sc
->sc_lo
[1]);
2582 err
|= __put_user(mfhi2(), &sc
->sc_hi
[2]);
2583 err
|= __put_user(mflo2(), &sc
->sc_lo
[2]);
2584 err
|= __put_user(mfhi3(), &sc
->sc_hi
[3]);
2585 err
|= __put_user(mflo3(), &sc
->sc_lo
[3]);
2586 err
|= __put_user(rddsp(DSP_MASK
), &sc
->sc_dsp
);
2592 err
|= __put_user(!!used_math(), &sc
->sc_used_math
);
2598 * Save FPU state to signal context. Signal handler will "inherit"
2599 * current FPU state.
2603 if (!is_fpu_owner()) {
2605 restore_fp(current
);
2607 err
|= save_fp_context(sc
);
2616 restore_sigcontext(CPUState
*regs
, struct target_sigcontext
*sc
)
2620 err
|= __get_user(regs
->CP0_EPC
, &sc
->sc_pc
);
2622 err
|= __get_user(regs
->active_tc
.HI
[0], &sc
->sc_mdhi
);
2623 err
|= __get_user(regs
->active_tc
.LO
[0], &sc
->sc_mdlo
);
2625 #define restore_gp_reg(i) do { \
2626 err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \
2628 restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3);
2629 restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6);
2630 restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9);
2631 restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12);
2632 restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15);
2633 restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18);
2634 restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21);
2635 restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24);
2636 restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27);
2637 restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30);
2639 #undef restore_gp_reg
2643 err
|= __get_user(treg
, &sc
->sc_hi1
); mthi1(treg
);
2644 err
|= __get_user(treg
, &sc
->sc_lo1
); mtlo1(treg
);
2645 err
|= __get_user(treg
, &sc
->sc_hi2
); mthi2(treg
);
2646 err
|= __get_user(treg
, &sc
->sc_lo2
); mtlo2(treg
);
2647 err
|= __get_user(treg
, &sc
->sc_hi3
); mthi3(treg
);
2648 err
|= __get_user(treg
, &sc
->sc_lo3
); mtlo3(treg
);
2649 err
|= __get_user(treg
, &sc
->sc_dsp
); wrdsp(treg
, DSP_MASK
);
2652 err
|= __get_user(regs
->hi
, &sc
->sc_hi
[0]);
2653 err
|= __get_user(regs
->lo
, &sc
->sc_lo
[0]);
2655 err
|= __get_user(treg
, &sc
->sc_hi
[1]); mthi1(treg
);
2656 err
|= __get_user(treg
, &sc
->sc_lo
[1]); mthi1(treg
);
2657 err
|= __get_user(treg
, &sc
->sc_hi
[2]); mthi2(treg
);
2658 err
|= __get_user(treg
, &sc
->sc_lo
[2]); mthi2(treg
);
2659 err
|= __get_user(treg
, &sc
->sc_hi
[3]); mthi3(treg
);
2660 err
|= __get_user(treg
, &sc
->sc_lo
[3]); mthi3(treg
);
2661 err
|= __get_user(treg
, &sc
->sc_dsp
); wrdsp(treg
, DSP_MASK
);
2665 err
|= __get_user(used_math
, &sc
->sc_used_math
);
2666 conditional_used_math(used_math
);
2671 /* restore fpu context if we have used it before */
2673 err
|= restore_fp_context(sc
);
2675 /* signal handler may have used FPU. Give it up. */
2684 * Determine which stack to use..
2686 static inline abi_ulong
2687 get_sigframe(struct target_sigaction
*ka
, CPUState
*regs
, size_t frame_size
)
2691 /* Default to using normal stack */
2692 sp
= regs
->active_tc
.gpr
[29];
2695 * FPU emulator may have it's own trampoline active just
2696 * above the user stack, 16-bytes before the next lowest
2697 * 16 byte boundary. Try to avoid trashing it.
2701 /* This is the X/Open sanctioned signal stack switching. */
2702 if ((ka
->sa_flags
& TARGET_SA_ONSTACK
) && (sas_ss_flags (sp
) == 0)) {
2703 sp
= target_sigaltstack_used
.ss_sp
+ target_sigaltstack_used
.ss_size
;
2706 return (sp
- frame_size
) & ~7;
2709 /* compare linux/arch/mips/kernel/signal.c:setup_frame() */
2710 static void setup_frame(int sig
, struct target_sigaction
* ka
,
2711 target_sigset_t
*set
, CPUState
*regs
)
2713 struct sigframe
*frame
;
2714 abi_ulong frame_addr
;
2717 frame_addr
= get_sigframe(ka
, regs
, sizeof(*frame
));
2718 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
2721 install_sigtramp(frame
->sf_code
, TARGET_NR_sigreturn
);
2723 if(setup_sigcontext(regs
, &frame
->sf_sc
))
2726 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
2727 if(__put_user(set
->sig
[i
], &frame
->sf_mask
.sig
[i
]))
2732 * Arguments to signal handler:
2734 * a0 = signal number
2735 * a1 = 0 (should be cause)
2736 * a2 = pointer to struct sigcontext
2738 * $25 and PC point to the signal handler, $29 points to the
2741 regs
->active_tc
.gpr
[ 4] = sig
;
2742 regs
->active_tc
.gpr
[ 5] = 0;
2743 regs
->active_tc
.gpr
[ 6] = frame_addr
+ offsetof(struct sigframe
, sf_sc
);
2744 regs
->active_tc
.gpr
[29] = frame_addr
;
2745 regs
->active_tc
.gpr
[31] = frame_addr
+ offsetof(struct sigframe
, sf_code
);
2746 /* The original kernel code sets CP0_EPC to the handler
2747 * since it returns to userland using eret
2748 * we cannot do this here, and we must set PC directly */
2749 regs
->active_tc
.PC
= regs
->active_tc
.gpr
[25] = ka
->_sa_handler
;
2750 unlock_user_struct(frame
, frame_addr
, 1);
2754 unlock_user_struct(frame
, frame_addr
, 1);
2755 force_sig(TARGET_SIGSEGV
/*, current*/);
2759 long do_sigreturn(CPUState
*regs
)
2761 struct sigframe
*frame
;
2762 abi_ulong frame_addr
;
2764 target_sigset_t target_set
;
2767 #if defined(DEBUG_SIGNAL)
2768 fprintf(stderr
, "do_sigreturn\n");
2770 frame_addr
= regs
->active_tc
.gpr
[29];
2771 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
2774 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
2775 if(__get_user(target_set
.sig
[i
], &frame
->sf_mask
.sig
[i
]))
2779 target_to_host_sigset_internal(&blocked
, &target_set
);
2780 sigprocmask(SIG_SETMASK
, &blocked
, NULL
);
2782 if (restore_sigcontext(regs
, &frame
->sf_sc
))
2787 * Don't let your children do this ...
2789 __asm__
__volatile__(
2797 regs
->active_tc
.PC
= regs
->CP0_EPC
;
2798 /* I am not sure this is right, but it seems to work
2799 * maybe a problem with nested signals ? */
2801 return -TARGET_QEMU_ESIGRETURN
;
2804 force_sig(TARGET_SIGSEGV
/*, current*/);
2808 static void setup_rt_frame(int sig
, struct target_sigaction
*ka
,
2809 target_siginfo_t
*info
,
2810 target_sigset_t
*set
, CPUState
*env
)
2812 struct target_rt_sigframe
*frame
;
2813 abi_ulong frame_addr
;
2816 frame_addr
= get_sigframe(ka
, env
, sizeof(*frame
));
2817 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
2820 install_sigtramp(frame
->rs_code
, TARGET_NR_rt_sigreturn
);
2822 copy_siginfo_to_user(&frame
->rs_info
, info
);
2824 __put_user(0, &frame
->rs_uc
.tuc_flags
);
2825 __put_user(0, &frame
->rs_uc
.tuc_link
);
2826 __put_user(target_sigaltstack_used
.ss_sp
, &frame
->rs_uc
.tuc_stack
.ss_sp
);
2827 __put_user(target_sigaltstack_used
.ss_size
, &frame
->rs_uc
.tuc_stack
.ss_size
);
2828 __put_user(sas_ss_flags(get_sp_from_cpustate(env
)),
2829 &frame
->rs_uc
.tuc_stack
.ss_flags
);
2831 setup_sigcontext(env
, &frame
->rs_uc
.tuc_mcontext
);
2833 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
2834 __put_user(set
->sig
[i
], &frame
->rs_uc
.tuc_sigmask
.sig
[i
]);
2838 * Arguments to signal handler:
2840 * a0 = signal number
2841 * a1 = pointer to struct siginfo
2842 * a2 = pointer to struct ucontext
2844 * $25 and PC point to the signal handler, $29 points to the
2847 env
->active_tc
.gpr
[ 4] = sig
;
2848 env
->active_tc
.gpr
[ 5] = frame_addr
2849 + offsetof(struct target_rt_sigframe
, rs_info
);
2850 env
->active_tc
.gpr
[ 6] = frame_addr
2851 + offsetof(struct target_rt_sigframe
, rs_uc
);
2852 env
->active_tc
.gpr
[29] = frame_addr
;
2853 env
->active_tc
.gpr
[31] = frame_addr
2854 + offsetof(struct target_rt_sigframe
, rs_code
);
2855 /* The original kernel code sets CP0_EPC to the handler
2856 * since it returns to userland using eret
2857 * we cannot do this here, and we must set PC directly */
2858 env
->active_tc
.PC
= env
->active_tc
.gpr
[25] = ka
->_sa_handler
;
2859 unlock_user_struct(frame
, frame_addr
, 1);
2863 unlock_user_struct(frame
, frame_addr
, 1);
2864 force_sig(TARGET_SIGSEGV
/*, current*/);
2868 long do_rt_sigreturn(CPUState
*env
)
2870 struct target_rt_sigframe
*frame
;
2871 abi_ulong frame_addr
;
2874 #if defined(DEBUG_SIGNAL)
2875 fprintf(stderr
, "do_rt_sigreturn\n");
2877 frame_addr
= env
->active_tc
.gpr
[29];
2878 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
2881 target_to_host_sigset(&blocked
, &frame
->rs_uc
.tuc_sigmask
);
2882 sigprocmask(SIG_SETMASK
, &blocked
, NULL
);
2884 if (restore_sigcontext(env
, &frame
->rs_uc
.tuc_mcontext
))
2887 if (do_sigaltstack(frame_addr
+
2888 offsetof(struct target_rt_sigframe
, rs_uc
.tuc_stack
),
2889 0, get_sp_from_cpustate(env
)) == -EFAULT
)
2892 env
->active_tc
.PC
= env
->CP0_EPC
;
2893 /* I am not sure this is right, but it seems to work
2894 * maybe a problem with nested signals ? */
2896 return -TARGET_QEMU_ESIGRETURN
;
2899 force_sig(TARGET_SIGSEGV
/*, current*/);
2903 #elif defined(TARGET_SH4)
2906 * code and data structures from linux kernel:
2907 * include/asm-sh/sigcontext.h
2908 * arch/sh/kernel/signal.c
2911 struct target_sigcontext
{
2912 target_ulong oldmask
;
2915 target_ulong sc_gregs
[16];
2919 target_ulong sc_gbr
;
2920 target_ulong sc_mach
;
2921 target_ulong sc_macl
;
2924 target_ulong sc_fpregs
[16];
2925 target_ulong sc_xfpregs
[16];
2926 unsigned int sc_fpscr
;
2927 unsigned int sc_fpul
;
2928 unsigned int sc_ownedfp
;
2931 struct target_sigframe
2933 struct target_sigcontext sc
;
2934 target_ulong extramask
[TARGET_NSIG_WORDS
-1];
2935 uint16_t retcode
[3];
2939 struct target_ucontext
{
2940 target_ulong tuc_flags
;
2941 struct target_ucontext
*tuc_link
;
2942 target_stack_t tuc_stack
;
2943 struct target_sigcontext tuc_mcontext
;
2944 target_sigset_t tuc_sigmask
; /* mask last for extensibility */
2947 struct target_rt_sigframe
2949 struct target_siginfo info
;
2950 struct target_ucontext uc
;
2951 uint16_t retcode
[3];
2955 #define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
2956 #define TRAP_NOARG 0xc310 /* Syscall w/no args (NR in R3) SH3/4 */
2958 static abi_ulong
get_sigframe(struct target_sigaction
*ka
,
2959 unsigned long sp
, size_t frame_size
)
2961 if ((ka
->sa_flags
& TARGET_SA_ONSTACK
) && (sas_ss_flags(sp
) == 0)) {
2962 sp
= target_sigaltstack_used
.ss_sp
+ target_sigaltstack_used
.ss_size
;
2965 return (sp
- frame_size
) & -8ul;
2968 static int setup_sigcontext(struct target_sigcontext
*sc
,
2969 CPUState
*regs
, unsigned long mask
)
2974 #define COPY(x) err |= __put_user(regs->x, &sc->sc_##x)
2975 COPY(gregs
[0]); COPY(gregs
[1]);
2976 COPY(gregs
[2]); COPY(gregs
[3]);
2977 COPY(gregs
[4]); COPY(gregs
[5]);
2978 COPY(gregs
[6]); COPY(gregs
[7]);
2979 COPY(gregs
[8]); COPY(gregs
[9]);
2980 COPY(gregs
[10]); COPY(gregs
[11]);
2981 COPY(gregs
[12]); COPY(gregs
[13]);
2982 COPY(gregs
[14]); COPY(gregs
[15]);
2983 COPY(gbr
); COPY(mach
);
2984 COPY(macl
); COPY(pr
);
2988 for (i
=0; i
<16; i
++) {
2989 err
|= __put_user(regs
->fregs
[i
], &sc
->sc_fpregs
[i
]);
2991 err
|= __put_user(regs
->fpscr
, &sc
->sc_fpscr
);
2992 err
|= __put_user(regs
->fpul
, &sc
->sc_fpul
);
2994 /* non-iBCS2 extensions.. */
2995 err
|= __put_user(mask
, &sc
->oldmask
);
3000 static int restore_sigcontext(CPUState
*regs
, struct target_sigcontext
*sc
,
3003 unsigned int err
= 0;
3006 #define COPY(x) err |= __get_user(regs->x, &sc->sc_##x)
3008 COPY(gregs
[2]); COPY(gregs
[3]);
3009 COPY(gregs
[4]); COPY(gregs
[5]);
3010 COPY(gregs
[6]); COPY(gregs
[7]);
3011 COPY(gregs
[8]); COPY(gregs
[9]);
3012 COPY(gregs
[10]); COPY(gregs
[11]);
3013 COPY(gregs
[12]); COPY(gregs
[13]);
3014 COPY(gregs
[14]); COPY(gregs
[15]);
3015 COPY(gbr
); COPY(mach
);
3016 COPY(macl
); COPY(pr
);
3020 for (i
=0; i
<16; i
++) {
3021 err
|= __get_user(regs
->fregs
[i
], &sc
->sc_fpregs
[i
]);
3023 err
|= __get_user(regs
->fpscr
, &sc
->sc_fpscr
);
3024 err
|= __get_user(regs
->fpul
, &sc
->sc_fpul
);
3026 regs
->tra
= -1; /* disable syscall checks */
3027 err
|= __get_user(*r0_p
, &sc
->sc_gregs
[0]);
3031 static void setup_frame(int sig
, struct target_sigaction
*ka
,
3032 target_sigset_t
*set
, CPUState
*regs
)
3034 struct target_sigframe
*frame
;
3035 abi_ulong frame_addr
;
3040 frame_addr
= get_sigframe(ka
, regs
->gregs
[15], sizeof(*frame
));
3041 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
3044 signal
= current_exec_domain_sig(sig
);
3046 err
|= setup_sigcontext(&frame
->sc
, regs
, set
->sig
[0]);
3048 for (i
= 0; i
< TARGET_NSIG_WORDS
- 1; i
++) {
3049 err
|= __put_user(set
->sig
[i
+ 1], &frame
->extramask
[i
]);
3052 /* Set up to return from userspace. If provided, use a stub
3053 already in userspace. */
3054 if (ka
->sa_flags
& TARGET_SA_RESTORER
) {
3055 regs
->pr
= (unsigned long) ka
->sa_restorer
;
3057 /* Generate return code (system call to sigreturn) */
3058 err
|= __put_user(MOVW(2), &frame
->retcode
[0]);
3059 err
|= __put_user(TRAP_NOARG
, &frame
->retcode
[1]);
3060 err
|= __put_user((TARGET_NR_sigreturn
), &frame
->retcode
[2]);
3061 regs
->pr
= (unsigned long) frame
->retcode
;
3067 /* Set up registers for signal handler */
3068 regs
->gregs
[15] = frame_addr
;
3069 regs
->gregs
[4] = signal
; /* Arg for signal handler */
3071 regs
->gregs
[6] = frame_addr
+= offsetof(typeof(*frame
), sc
);
3072 regs
->pc
= (unsigned long) ka
->_sa_handler
;
3074 unlock_user_struct(frame
, frame_addr
, 1);
3078 unlock_user_struct(frame
, frame_addr
, 1);
3079 force_sig(TARGET_SIGSEGV
);
3082 static void setup_rt_frame(int sig
, struct target_sigaction
*ka
,
3083 target_siginfo_t
*info
,
3084 target_sigset_t
*set
, CPUState
*regs
)
3086 struct target_rt_sigframe
*frame
;
3087 abi_ulong frame_addr
;
3092 frame_addr
= get_sigframe(ka
, regs
->gregs
[15], sizeof(*frame
));
3093 if (!lock_user_struct(VERIFY_WRITE
, frame
, frame_addr
, 0))
3096 signal
= current_exec_domain_sig(sig
);
3098 err
|= copy_siginfo_to_user(&frame
->info
, info
);
3100 /* Create the ucontext. */
3101 err
|= __put_user(0, &frame
->uc
.tuc_flags
);
3102 err
|= __put_user(0, (unsigned long *)&frame
->uc
.tuc_link
);
3103 err
|= __put_user((unsigned long)target_sigaltstack_used
.ss_sp
,
3104 &frame
->uc
.tuc_stack
.ss_sp
);
3105 err
|= __put_user(sas_ss_flags(regs
->gregs
[15]),
3106 &frame
->uc
.tuc_stack
.ss_flags
);
3107 err
|= __put_user(target_sigaltstack_used
.ss_size
,
3108 &frame
->uc
.tuc_stack
.ss_size
);
3109 err
|= setup_sigcontext(&frame
->uc
.tuc_mcontext
,
3111 for(i
= 0; i
< TARGET_NSIG_WORDS
; i
++) {
3112 err
|= __put_user(set
->sig
[i
], &frame
->uc
.tuc_sigmask
.sig
[i
]);
3115 /* Set up to return from userspace. If provided, use a stub
3116 already in userspace. */
3117 if (ka
->sa_flags
& TARGET_SA_RESTORER
) {
3118 regs
->pr
= (unsigned long) ka
->sa_restorer
;
3120 /* Generate return code (system call to sigreturn) */
3121 err
|= __put_user(MOVW(2), &frame
->retcode
[0]);
3122 err
|= __put_user(TRAP_NOARG
, &frame
->retcode
[1]);
3123 err
|= __put_user((TARGET_NR_rt_sigreturn
), &frame
->retcode
[2]);
3124 regs
->pr
= (unsigned long) frame
->retcode
;
3130 /* Set up registers for signal handler */
3131 regs
->gregs
[15] = frame_addr
;
3132 regs
->gregs
[4] = signal
; /* Arg for signal handler */
3133 regs
->gregs
[5] = frame_addr
+ offsetof(typeof(*frame
), info
);
3134 regs
->gregs
[6] = frame_addr
+ offsetof(typeof(*frame
), uc
);
3135 regs
->pc
= (unsigned long) ka
->_sa_handler
;
3137 unlock_user_struct(frame
, frame_addr
, 1);
3141 unlock_user_struct(frame
, frame_addr
, 1);
3142 force_sig(TARGET_SIGSEGV
);
3145 long do_sigreturn(CPUState
*regs
)
3147 struct target_sigframe
*frame
;
3148 abi_ulong frame_addr
;
3150 target_sigset_t target_set
;
3155 #if defined(DEBUG_SIGNAL)
3156 fprintf(stderr
, "do_sigreturn\n");
3158 frame_addr
= regs
->gregs
[15];
3159 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
3162 err
|= __get_user(target_set
.sig
[0], &frame
->sc
.oldmask
);
3163 for(i
= 1; i
< TARGET_NSIG_WORDS
; i
++) {
3164 err
|= (__get_user(target_set
.sig
[i
], &frame
->extramask
[i
- 1]));
3170 target_to_host_sigset_internal(&blocked
, &target_set
);
3171 sigprocmask(SIG_SETMASK
, &blocked
, NULL
);
3173 if (restore_sigcontext(regs
, &frame
->sc
, &r0
))
3176 unlock_user_struct(frame
, frame_addr
, 0);
3180 unlock_user_struct(frame
, frame_addr
, 0);
3181 force_sig(TARGET_SIGSEGV
);
3185 long do_rt_sigreturn(CPUState
*regs
)
3187 struct target_rt_sigframe
*frame
;
3188 abi_ulong frame_addr
;
3192 #if defined(DEBUG_SIGNAL)
3193 fprintf(stderr
, "do_rt_sigreturn\n");
3195 frame_addr
= regs
->gregs
[15];
3196 if (!lock_user_struct(VERIFY_READ
, frame
, frame_addr
, 1))
3199 target_to_host_sigset(&blocked
, &frame
->uc
.tuc_sigmask
);
3200 sigprocmask(SIG_SETMASK