* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <errno.h>
-#include <assert.h>
+#include "qemu/osdep.h"
#include <sys/ucontext.h>
#include <sys/resource.h>
#include "qemu.h"
#include "qemu-common.h"
#include "target_signal.h"
-
-//#define DEBUG_SIGNAL
+#include "trace.h"
static struct target_sigaltstack target_sigaltstack_used = {
.ss_sp = 0,
TaskState *ts = (TaskState *)cpu->opaque;
int host_sig, core_dumped = 0;
struct sigaction act;
+
host_sig = target_to_host_signal(target_sig);
+ trace_user_force_sig(env, target_sig, host_sig);
gdb_signalled(env, target_sig);
/* dump core if supported by target binary format */
abi_ulong handler;
int queue;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "queue_signal: sig=%d\n",
- sig);
-#endif
+ trace_user_queue_signal(env, sig);
k = &ts->sigtab[sig - 1];
queue = gdb_queuesig ();
handler = sigact_table[sig - 1]._sa_handler;
sig = host_to_target_signal(host_signum);
if (sig < 1 || sig > TARGET_NSIG)
return;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "qemu: got signal %d\n", sig);
-#endif
+ trace_user_host_signal(env, host_signum, sig);
host_to_target_siginfo_noswap(&tinfo, info);
if (queue_signal(env, sig, &tinfo) == 1) {
/* interrupt the virtual CPU as soon as possible */
if (sig < 1 || sig > TARGET_NSIG || sig == TARGET_SIGKILL || sig == TARGET_SIGSTOP)
return -EINVAL;
k = &sigact_table[sig - 1];
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "sigaction sig=%d act=0x%p, oact=0x%p\n",
- sig, act, oact);
-#endif
if (oact) {
__put_user(k->_sa_handler, &oact->_sa_handler);
__put_user(k->sa_flags, &oact->sa_flags);
int i;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
int i;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
sigset_t set;
int eax, i;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_sigreturn\n");
-#endif
+ trace_user_do_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
/* set blocked signals */
int eax;
frame_addr = env->regs[R_ESP] - 4;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
abi_ulong frame_addr, return_addr;
frame_addr = get_sigframe(ka, env);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
struct target_rt_sigframe *frame = NULL;
abi_ulong frame_addr = env->xregs[31];
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (frame_addr & 15) {
goto badframe;
}
setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
CPUARMState *env, abi_ulong mask)
{
- __put_user(env->regs[0], &sc->arm_r0);
- __put_user(env->regs[1], &sc->arm_r1);
- __put_user(env->regs[2], &sc->arm_r2);
- __put_user(env->regs[3], &sc->arm_r3);
- __put_user(env->regs[4], &sc->arm_r4);
- __put_user(env->regs[5], &sc->arm_r5);
- __put_user(env->regs[6], &sc->arm_r6);
- __put_user(env->regs[7], &sc->arm_r7);
- __put_user(env->regs[8], &sc->arm_r8);
- __put_user(env->regs[9], &sc->arm_r9);
- __put_user(env->regs[10], &sc->arm_r10);
- __put_user(env->regs[11], &sc->arm_fp);
- __put_user(env->regs[12], &sc->arm_ip);
- __put_user(env->regs[13], &sc->arm_sp);
- __put_user(env->regs[14], &sc->arm_lr);
- __put_user(env->regs[15], &sc->arm_pc);
+ __put_user(env->regs[0], &sc->arm_r0);
+ __put_user(env->regs[1], &sc->arm_r1);
+ __put_user(env->regs[2], &sc->arm_r2);
+ __put_user(env->regs[3], &sc->arm_r3);
+ __put_user(env->regs[4], &sc->arm_r4);
+ __put_user(env->regs[5], &sc->arm_r5);
+ __put_user(env->regs[6], &sc->arm_r6);
+ __put_user(env->regs[7], &sc->arm_r7);
+ __put_user(env->regs[8], &sc->arm_r8);
+ __put_user(env->regs[9], &sc->arm_r9);
+ __put_user(env->regs[10], &sc->arm_r10);
+ __put_user(env->regs[11], &sc->arm_fp);
+ __put_user(env->regs[12], &sc->arm_ip);
+ __put_user(env->regs[13], &sc->arm_sp);
+ __put_user(env->regs[14], &sc->arm_lr);
+ __put_user(env->regs[15], &sc->arm_pc);
#ifdef TARGET_CONFIG_CPU_32
- __put_user(cpsr_read(env), &sc->arm_cpsr);
+ __put_user(cpsr_read(env), &sc->arm_cpsr);
#endif
- __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
- __put_user(/* current->thread.error_code */ 0, &sc->error_code);
- __put_user(/* current->thread.address */ 0, &sc->fault_address);
- __put_user(mask, &sc->oldmask);
+ __put_user(/* current->thread.trap_no */ 0, &sc->trap_no);
+ __put_user(/* current->thread.error_code */ 0, &sc->error_code);
+ __put_user(/* current->thread.address */ 0, &sc->fault_address);
+ __put_user(mask, &sc->oldmask);
}
static inline abi_ulong
get_sigframe(struct target_sigaction *ka, CPUARMState *regs, int framesize)
{
- unsigned long sp = regs->regs[13];
+ unsigned long sp = regs->regs[13];
- /*
- * This is the X/Open sanctioned signal stack switching.
- */
- if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp))
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- /*
- * ATPCS B01 mandates 8-byte alignment
- */
- return (sp - framesize) & ~7;
+ /*
+ * This is the X/Open sanctioned signal stack switching.
+ */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+ /*
+ * ATPCS B01 mandates 8-byte alignment
+ */
+ return (sp - framesize) & ~7;
}
static void
setup_return(CPUARMState *env, struct target_sigaction *ka,
abi_ulong *rc, abi_ulong frame_addr, int usig, abi_ulong rc_addr)
{
- abi_ulong handler = ka->_sa_handler;
- abi_ulong retcode;
- int thumb = handler & 1;
- uint32_t cpsr = cpsr_read(env);
+ abi_ulong handler = ka->_sa_handler;
+ abi_ulong retcode;
+ int thumb = handler & 1;
+ uint32_t cpsr = cpsr_read(env);
- cpsr &= ~CPSR_IT;
- if (thumb) {
- cpsr |= CPSR_T;
- } else {
- cpsr &= ~CPSR_T;
- }
+ cpsr &= ~CPSR_IT;
+ if (thumb) {
+ cpsr |= CPSR_T;
+ } else {
+ cpsr &= ~CPSR_T;
+ }
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- retcode = ka->sa_restorer;
- } else {
- unsigned int idx = thumb;
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ retcode = ka->sa_restorer;
+ } else {
+ unsigned int idx = thumb;
- if (ka->sa_flags & TARGET_SA_SIGINFO)
- idx += 2;
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ idx += 2;
+ }
__put_user(retcodes[idx], rc);
- retcode = rc_addr + thumb;
- }
+ retcode = rc_addr + thumb;
+ }
- env->regs[0] = usig;
- env->regs[13] = frame_addr;
- env->regs[14] = retcode;
- env->regs[15] = handler & (thumb ? ~1 : ~3);
- cpsr_write(env, cpsr, 0xffffffff);
+ env->regs[0] = usig;
+ env->regs[13] = frame_addr;
+ env->regs[14] = retcode;
+ env->regs[15] = handler & (thumb ? ~1 : ~3);
+ cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr);
}
static abi_ulong *setup_sigframe_v2_vfp(abi_ulong *regspace, CPUARMState *env)
abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
int i;
+ trace_user_setup_frame(regs, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
return;
struct sigframe_v2 *frame;
abi_ulong frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+ trace_user_setup_frame(regs, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
return;
int i;
abi_ulong info_addr, uc_addr;
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
return /* 1 */;
abi_ulong frame_addr = get_sigframe(ka, env, sizeof(*frame));
abi_ulong info_addr, uc_addr;
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
return /* 1 */;
__get_user(env->regs[15], &sc->arm_pc);
#ifdef TARGET_CONFIG_CPU_32
__get_user(cpsr, &sc->arm_cpsr);
- cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC);
+ cpsr_write(env, cpsr, CPSR_USER | CPSR_EXEC, CPSRWriteByInstr);
#endif
err |= !valid_user_regs(env);
* not, then the user is trying to mess with us.
*/
frame_addr = env->regs[13];
+ trace_user_do_sigreturn(env, frame_addr);
if (frame_addr & 7) {
goto badframe;
}
* not, then the user is trying to mess with us.
*/
frame_addr = env->regs[13];
+ trace_user_do_sigreturn(env, frame_addr);
if (frame_addr & 7) {
goto badframe;
}
* not, then the user is trying to mess with us.
*/
frame_addr = env->regs[13];
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (frame_addr & 7) {
goto badframe;
}
* not, then the user is trying to mess with us.
*/
frame_addr = env->regs[13];
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (frame_addr & 7) {
goto badframe;
}
sigframe_size = NF_ALIGNEDSZ;
sf_addr = get_sigframe(ka, env, sigframe_size);
+ trace_user_setup_frame(env, sf_addr);
sf = lock_user(VERIFY_WRITE, sf_addr,
sizeof(struct target_signal_frame), 0);
if (!sf)
goto sigsegv;
- //fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
#if 0
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill_and_return;
force_sig(TARGET_SIGILL);
#endif
sigsegv:
- //fprintf(stderr, "force_sig\n");
unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
force_sig(TARGET_SIGSEGV);
}
int err=0, i;
sf_addr = env->regwptr[UREG_FP];
+ trace_user_do_sigreturn(env, sf_addr);
if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1))
goto segv_and_exit;
-#if 0
- fprintf(stderr, "sigreturn\n");
- fprintf(stderr, "sf: %x pc %x fp %x sp %x\n", sf, env->pc, env->regwptr[UREG_FP], env->regwptr[UREG_SP]);
-#endif
- //cpu_dump_state(env, stderr, fprintf, 0);
/* 1. Make sure we are not getting garbage from the user */
long do_rt_sigreturn(CPUSPARCState *env)
{
+ trace_user_do_rt_sigreturn(env, 0);
fprintf(stderr, "do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
int i;
frame_addr = get_sigframe(ka, regs, sizeof(*frame));
+ trace_user_setup_frame(regs, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
target_sigset_t target_set;
int i;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_sigreturn\n");
-#endif
frame_addr = regs->active_tc.gpr[29];
+ trace_user_do_sigreturn(regs, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
int i;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
abi_ulong frame_addr;
sigset_t blocked;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_rt_sigreturn\n");
-#endif
frame_addr = env->active_tc.gpr[29];
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
struct target_sigframe *frame;
abi_ulong frame_addr;
int i;
- int err = 0;
frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
+ trace_user_setup_frame(regs, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
regs->pr = (unsigned long) ka->sa_restorer;
} else {
/* Generate return code (system call to sigreturn) */
+ abi_ulong retcode_addr = frame_addr +
+ offsetof(struct target_sigframe, retcode);
__put_user(MOVW(2), &frame->retcode[0]);
__put_user(TRAP_NOARG, &frame->retcode[1]);
__put_user((TARGET_NR_sigreturn), &frame->retcode[2]);
- regs->pr = (unsigned long) frame->retcode;
+ regs->pr = (unsigned long) retcode_addr;
}
- if (err)
- goto give_sigsegv;
-
/* Set up registers for signal handler */
regs->gregs[15] = frame_addr;
regs->gregs[4] = sig; /* Arg for signal handler */
struct target_rt_sigframe *frame;
abi_ulong frame_addr;
int i;
- int err = 0;
frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
+ trace_user_setup_rt_frame(regs, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
regs->pr = (unsigned long) ka->sa_restorer;
} else {
/* Generate return code (system call to sigreturn) */
+ abi_ulong retcode_addr = frame_addr +
+ offsetof(struct target_rt_sigframe, retcode);
__put_user(MOVW(2), &frame->retcode[0]);
__put_user(TRAP_NOARG, &frame->retcode[1]);
__put_user((TARGET_NR_rt_sigreturn), &frame->retcode[2]);
- regs->pr = (unsigned long) frame->retcode;
+ regs->pr = (unsigned long) retcode_addr;
}
- if (err)
- goto give_sigsegv;
-
/* Set up registers for signal handler */
regs->gregs[15] = frame_addr;
regs->gregs[4] = sig; /* Arg for signal handler */
int i;
int err = 0;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_sigreturn\n");
-#endif
frame_addr = regs->gregs[15];
+ trace_user_do_sigreturn(regs, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
sigset_t blocked;
target_ulong r0;
-#if defined(DEBUG_SIGNAL)
- fprintf(stderr, "do_rt_sigreturn\n");
-#endif
frame_addr = regs->gregs[15];
+ trace_user_do_rt_sigreturn(regs, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
int i;
frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto badframe;
int i;
frame_addr = env->regs[R_SP];
+ trace_user_do_sigreturn(env, frame_addr);
/* Make sure the guest isn't playing games. */
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
goto badframe;
long do_rt_sigreturn(CPUMBState *env)
{
+ trace_user_do_rt_sigreturn(env, 0);
fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
int i;
frame_addr = get_sigframe(env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto badframe;
int i;
frame_addr = env->regs[R_SP];
+ trace_user_do_sigreturn(env, frame_addr);
/* Make sure the guest isn't playing games. */
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
goto badframe;
long do_rt_sigreturn(CPUCRISState *env)
{
+ trace_user_do_rt_sigreturn(env, 0);
fprintf(stderr, "CRIS do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
return sp;
}
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUOpenRISCState *env)
-{
- qemu_log("Not implement.\n");
-}
-
static void setup_rt_frame(int sig, struct target_sigaction *ka,
target_siginfo_t *info,
target_sigset_t *set, CPUOpenRISCState *env)
abi_ulong info_addr, uc_addr;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
long do_sigreturn(CPUOpenRISCState *env)
{
-
- qemu_log("do_sigreturn: not implemented\n");
+ trace_user_do_sigreturn(env, 0);
+ fprintf(stderr, "do_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
long do_rt_sigreturn(CPUOpenRISCState *env)
{
- qemu_log("do_rt_sigreturn: not implemented\n");
+ trace_user_do_rt_sigreturn(env, 0);
+ fprintf(stderr, "do_rt_sigreturn: not implemented\n");
return -TARGET_ENOSYS;
}
/* TARGET_OPENRISC */
abi_ulong frame_addr;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
- qemu_log("%s: 1\n", __FUNCTION__);
__put_user(set->sig[0], &frame->sc.oldmask[0]);
save_sigregs(env, &frame->sregs);
return;
give_sigsegv:
- qemu_log("%s: give_sigsegv\n", __FUNCTION__);
force_sig(TARGET_SIGSEGV);
}
abi_ulong frame_addr;
frame_addr = get_sigframe(ka, env, sizeof *frame);
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
- qemu_log("%s: 1\n", __FUNCTION__);
tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
return;
give_sigsegv:
- qemu_log("%s: give_sigsegv\n", __FUNCTION__);
force_sig(TARGET_SIGSEGV);
}
}
__get_user(env->psw.mask, &sc->regs.psw.mask);
- qemu_log("%s: sc->regs.psw.addr 0x%llx env->psw.addr 0x%llx\n",
- __FUNCTION__, (unsigned long long)sc->regs.psw.addr,
- (unsigned long long)env->psw.addr);
+ trace_user_s390x_restore_sigregs(env, (unsigned long long)sc->regs.psw.addr,
+ (unsigned long long)env->psw.addr);
__get_user(env->psw.addr, &sc->regs.psw.addr);
/* FIXME: 31-bit -> | PSW_ADDR_AMODE */
{
sigframe *frame;
abi_ulong frame_addr = env->regs[15];
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
target_sigset_t target_set;
sigset_t set;
+ trace_user_do_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
{
rt_sigframe *frame;
abi_ulong frame_addr = env->regs[15];
- qemu_log("%s: frame_addr 0x%llx\n", __FUNCTION__,
- (unsigned long long)frame_addr);
sigset_t set;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
#endif
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
goto sigsegv;
sc = &frame->sctx;
sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- qemu_log("segfaulting from setup_frame\n");
force_sig(TARGET_SIGSEGV);
}
sigsegv:
unlock_user_struct(rt_sf, rt_sf_addr, 1);
- qemu_log("segfaulting from setup_rt_frame\n");
force_sig(TARGET_SIGSEGV);
}
sigsegv:
unlock_user_struct(sr, sr_addr, 1);
unlock_user_struct(sc, sc_addr, 1);
- qemu_log("segfaulting from do_sigreturn\n");
force_sig(TARGET_SIGSEGV);
return 0;
}
sigsegv:
unlock_user_struct(rt_sf, rt_sf_addr, 1);
- qemu_log("segfaulting from do_rt_sigreturn\n");
force_sig(TARGET_SIGSEGV);
return 0;
}
int i;
frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
int i;
frame_addr = get_sigframe(ka, env, sizeof *frame);
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
sigset_t set;
int d0, i;
+ trace_user_do_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
sigset_t set;
int d0;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
int err = 0;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
int i, err = 0;
frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
goto give_sigsegv;
}
struct target_rt_sigframe *frame;
sigset_t set;
+ trace_user_do_rt_sigreturn(env, frame_addr);
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
goto badframe;
}
force_sig(TARGET_SIGSEGV);
}
+#elif defined(TARGET_TILEGX)
+
+struct target_sigcontext {
+ union {
+ /* General-purpose registers. */
+ abi_ulong gregs[56];
+ struct {
+ abi_ulong __gregs[53];
+ abi_ulong tp; /* Aliases gregs[TREG_TP]. */
+ abi_ulong sp; /* Aliases gregs[TREG_SP]. */
+ abi_ulong lr; /* Aliases gregs[TREG_LR]. */
+ };
+ };
+ abi_ulong pc; /* Program counter. */
+ abi_ulong ics; /* In Interrupt Critical Section? */
+ abi_ulong faultnum; /* Fault number. */
+ abi_ulong pad[5];
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe {
+ unsigned char save_area[16]; /* caller save area */
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc,
+ CPUArchState *env, int signo)
+{
+ int i;
+
+ for (i = 0; i < TILEGX_R_COUNT; ++i) {
+ __put_user(env->regs[i], &sc->gregs[i]);
+ }
+
+ __put_user(env->pc, &sc->pc);
+ __put_user(0, &sc->ics);
+ __put_user(signo, &sc->faultnum);
+}
+
+static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc)
+{
+ int i;
+
+ for (i = 0; i < TILEGX_R_COUNT; ++i) {
+ __get_user(env->regs[i], &sc->gregs[i]);
+ }
+
+ __get_user(env->pc, &sc->pc);
+}
+
+static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env,
+ size_t frame_size)
+{
+ unsigned long sp = env->regs[TILEGX_R_SP];
+
+ if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) {
+ return -1UL;
+ }
+
+ if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ sp -= frame_size;
+ sp &= -16UL;
+ return sp;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUArchState *env)
+{
+ abi_ulong frame_addr;
+ struct target_rt_sigframe *frame;
+ unsigned long restorer;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ /* Always write at least the signal number for the stack backtracer. */
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ /* At sigreturn time, restore the callee-save registers too. */
+ tswap_siginfo(&frame->info, info);
+ /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */
+ } else {
+ __put_user(info->si_signo, &frame->info.si_signo);
+ }
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
+
+ restorer = (unsigned long) do_rt_sigreturn;
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ restorer = (unsigned long) ka->sa_restorer;
+ }
+ env->pc = (unsigned long) ka->_sa_handler;
+ env->regs[TILEGX_R_SP] = (unsigned long) frame;
+ env->regs[TILEGX_R_LR] = restorer;
+ env->regs[0] = (unsigned long) sig;
+ env->regs[1] = (unsigned long) &frame->info;
+ env->regs[2] = (unsigned long) &frame->uc;
+ /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ if (sig == TARGET_SIGSEGV) {
+ ka->_sa_handler = TARGET_SIG_DFL;
+ }
+ force_sig(TARGET_SIGSEGV /* , current */);
+}
+
+long do_rt_sigreturn(CPUTLGState *env)
+{
+ abi_ulong frame_addr = env->regs[TILEGX_R_SP];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ do_sigprocmask(SIG_SETMASK, &set, NULL);
+
+ restore_sigcontext(env, &frame->uc.tuc_mcontext);
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.tuc_stack),
+ 0, env->regs[TILEGX_R_SP]) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return env->regs[TILEGX_R_RE];
+
+
+ badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+}
+
#else
static void setup_frame(int sig, struct target_sigaction *ka,
return;
handle_signal:
-#ifdef DEBUG_SIGNAL
- fprintf(stderr, "qemu: process signal %d\n", sig);
-#endif
+ trace_user_handle_signal(cpu_env, sig);
/* dequeue signal */
q = k->first;
k->first = q->next;
}
#endif
/* prepare the stack frame of the virtual CPU */
-#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
+#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64) \
+ || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX)
/* These targets do not have traditional signals. */
setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
#else
Code Review / kvmfornfv.git / blobdiff