#include <stdarg.h>
#include <unistd.h>
#include <errno.h>
-#include <assert.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);
return ret;
}
-static inline void copy_siginfo_to_user(target_siginfo_t *tinfo,
- const target_siginfo_t *info)
-{
- tswap_siginfo(tinfo, info);
-}
-
-static inline int current_exec_domain_sig(int sig)
-{
- return /* current->exec_domain && current->exec_domain->signal_invmap
- && sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig;
-}
-
#if defined(TARGET_I386) && TARGET_ABI_BITS == 32
/* from the Linux kernel */
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;
- __put_user(current_exec_domain_sig(sig),
- &frame->sig);
+ __put_user(sig, &frame->sig);
setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
frame_addr + offsetof(struct sigframe, fpstate));
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;
- __put_user(current_exec_domain_sig(sig), &frame->sig);
+ __put_user(sig, &frame->sig);
addr = frame_addr + offsetof(struct rt_sigframe, info);
__put_user(addr, &frame->pinfo);
addr = frame_addr + offsetof(struct rt_sigframe, uc);
__put_user(addr, &frame->puc);
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
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;
}
env->pc = ka->_sa_handler;
env->xregs[30] = return_addr;
if (info) {
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
}
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;
}
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 */;
__put_user(info_addr, &frame->pinfo);
uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
__put_user(uc_addr, &frame->puc);
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
/* Clear all the bits of the ucontext we don't use. */
memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
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 */;
info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
setup_sigframe_v2(&frame->uc, set, 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;
/* Flush instruction space. */
//flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
- // tb_flush(env);
+ // tb_flush(CPU(sparc_env_get_cpu(env)));
}
unlock_user(sf, sf_addr, sizeof(struct target_signal_frame));
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;
install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
- copy_siginfo_to_user(&frame->rs_info, info);
+ tswap_siginfo(&frame->rs_info, info);
__put_user(0, &frame->rs_uc.tuc_flags);
__put_user(0, &frame->rs_uc.tuc_link);
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;
- int signal;
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;
- signal = current_exec_domain_sig(sig);
-
setup_sigcontext(&frame->sc, regs, set->sig[0]);
for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
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] = signal; /* Arg for signal handler */
+ regs->gregs[4] = sig; /* Arg for signal handler */
regs->gregs[5] = 0;
regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
regs->pc = (unsigned long) ka->_sa_handler;
struct target_rt_sigframe *frame;
abi_ulong frame_addr;
int i;
- int err = 0;
- int signal;
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;
- signal = current_exec_domain_sig(sig);
-
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
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] = signal; /* Arg for signal handler */
+ regs->gregs[4] = sig; /* Arg for signal handler */
regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
regs->pc = (unsigned long) ka->_sa_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;
}
__put_user(uc_addr, &frame->puc);
if (ka->sa_flags & SA_SIGINFO) {
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
}
/*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/
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 */
*/
//save_fp_regs(¤t->thread.fp_regs); FIXME
for (i = 0; i < 16; i++) {
- __put_user(env->fregs[i].ll, &sregs->fpregs.fprs[i]);
+ __put_user(get_freg(env, i)->ll, &sregs->fpregs.fprs[i]);
}
}
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__);
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
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 */
__get_user(env->aregs[i], &sc->regs.acrs[i]);
}
for (i = 0; i < 16; i++) {
- __get_user(env->fregs[i].ll, &sc->fpregs.fprs[i]);
+ __get_user(get_freg(env, i)->ll, &sc->fpregs.fprs[i]);
}
return err;
{
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;
}
return 0;
}
-#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
-
-/* FIXME: Many of the structures are defined for both PPC and PPC64, but
- the signal handling is different enough that we haven't implemented
- support for PPC64 yet. Hence the restriction above.
-
- There are various #if'd blocks for code for TARGET_PPC64. These
- blocks should go away so that we can successfully run 32-bit and
- 64-bit binaries on a QEMU configured for PPC64. */
+#elif defined(TARGET_PPC)
/* Size of dummy stack frame allocated when calling signal handler.
See arch/powerpc/include/asm/ptrace.h. */
#define SIGNAL_FRAMESIZE 64
#endif
+/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
+ on 64-bit PPC, sigcontext and mcontext are one and the same. */
+struct target_mcontext {
+ target_ulong mc_gregs[48];
+ /* Includes fpscr. */
+ uint64_t mc_fregs[33];
+ target_ulong mc_pad[2];
+ /* We need to handle Altivec and SPE at the same time, which no
+ kernel needs to do. Fortunately, the kernel defines this bit to
+ be Altivec-register-large all the time, rather than trying to
+ twiddle it based on the specific platform. */
+ union {
+ /* SPE vector registers. One extra for SPEFSCR. */
+ uint32_t spe[33];
+ /* Altivec vector registers. The packing of VSCR and VRSAVE
+ varies depending on whether we're PPC64 or not: PPC64 splits
+ them apart; PPC32 stuffs them together. */
+#if defined(TARGET_PPC64)
+#define QEMU_NVRREG 34
+#else
+#define QEMU_NVRREG 33
+#endif
+ ppc_avr_t altivec[QEMU_NVRREG];
+#undef QEMU_NVRREG
+ } mc_vregs __attribute__((__aligned__(16)));
+};
+
/* See arch/powerpc/include/asm/sigcontext.h. */
struct target_sigcontext {
target_ulong _unused[4];
target_ulong handler;
target_ulong oldmask;
target_ulong regs; /* struct pt_regs __user * */
- /* TODO: PPC64 includes extra bits here. */
+#if defined(TARGET_PPC64)
+ struct target_mcontext mcontext;
+#endif
};
/* Indices for target_mcontext.mc_gregs, below.
TARGET_PT_REGS_COUNT = 44
};
-/* See arch/powerpc/include/asm/ucontext.h. Only used for 32-bit PPC;
- on 64-bit PPC, sigcontext and mcontext are one and the same. */
-struct target_mcontext {
- target_ulong mc_gregs[48];
- /* Includes fpscr. */
- uint64_t mc_fregs[33];
- target_ulong mc_pad[2];
- /* We need to handle Altivec and SPE at the same time, which no
- kernel needs to do. Fortunately, the kernel defines this bit to
- be Altivec-register-large all the time, rather than trying to
- twiddle it based on the specific platform. */
- union {
- /* SPE vector registers. One extra for SPEFSCR. */
- uint32_t spe[33];
- /* Altivec vector registers. The packing of VSCR and VRSAVE
- varies depending on whether we're PPC64 or not: PPC64 splits
- them apart; PPC32 stuffs them together. */
-#if defined(TARGET_PPC64)
-#define QEMU_NVRREG 34
-#else
-#define QEMU_NVRREG 33
-#endif
- ppc_avr_t altivec[QEMU_NVRREG];
-#undef QEMU_NVRREG
- } mc_vregs __attribute__((__aligned__(16)));
-};
struct target_ucontext {
target_ulong tuc_flags;
target_sigset_t tuc_sigmask;
#if defined(TARGET_PPC64)
target_sigset_t unused[15]; /* Allow for uc_sigmask growth */
- struct target_sigcontext tuc_mcontext;
+ struct target_sigcontext tuc_sigcontext;
#else
int32_t tuc_maskext[30];
int32_t tuc_pad2[3];
int32_t abigap[56];
};
+#if defined(TARGET_PPC64)
+
+#define TARGET_TRAMP_SIZE 6
+
+struct target_rt_sigframe {
+ /* sys_rt_sigreturn requires the ucontext be the first field */
+ struct target_ucontext uc;
+ target_ulong _unused[2];
+ uint32_t trampoline[TARGET_TRAMP_SIZE];
+ target_ulong pinfo; /* struct siginfo __user * */
+ target_ulong puc; /* void __user * */
+ struct target_siginfo info;
+ /* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
+ char abigap[288];
+} __attribute__((aligned(16)));
+
+#else
+
struct target_rt_sigframe {
struct target_siginfo info;
struct target_ucontext uc;
int32_t abigap[56];
};
+#endif
+
+#if defined(TARGET_PPC64)
+
+struct target_func_ptr {
+ target_ulong entry;
+ target_ulong toc;
+};
+
+#endif
+
/* We use the mc_pad field for the signal return trampoline. */
#define tramp mc_pad
return newsp;
}
-static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame,
- int sigret)
+static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
{
target_ulong msr = env->msr;
int i;
/* Store MSR. */
__put_user(msr, &frame->mc_gregs[TARGET_PT_MSR]);
+}
+static void encode_trampoline(int sigret, uint32_t *tramp)
+{
/* Set up the sigreturn trampoline: li r0,sigret; sc. */
if (sigret) {
- __put_user(0x38000000UL | sigret, &frame->tramp[0]);
- __put_user(0x44000002UL, &frame->tramp[1]);
+ __put_user(0x38000000 | sigret, &tramp[0]);
+ __put_user(0x44000002, &tramp[1]);
}
}
struct target_sigcontext *sc;
target_ulong frame_addr, newsp;
int err = 0;
- int signal;
+#if defined(TARGET_PPC64)
+ struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
+#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;
- signal = current_exec_domain_sig(sig);
-
__put_user(ka->_sa_handler, &sc->handler);
__put_user(set->sig[0], &sc->oldmask);
-#if defined(TARGET_PPC64)
+#if TARGET_ABI_BITS == 64
__put_user(set->sig[0] >> 32, &sc->_unused[3]);
#else
__put_user(set->sig[1], &sc->_unused[3]);
__put_user(sig, &sc->signal);
/* Save user regs. */
- save_user_regs(env, &frame->mctx, TARGET_NR_sigreturn);
+ save_user_regs(env, &frame->mctx);
+
+ /* Construct the trampoline code on the stack. */
+ encode_trampoline(TARGET_NR_sigreturn, (uint32_t *)&frame->mctx.tramp);
/* The kernel checks for the presence of a VDSO here. We don't
emulate a vdso, so use a sigreturn system call. */
/* Set up registers for signal handler. */
env->gpr[1] = newsp;
- env->gpr[3] = signal;
+ env->gpr[3] = sig;
env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
+
+#if defined(TARGET_PPC64)
+ if (get_ppc64_abi(image) < 2) {
+ /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
+ struct target_func_ptr *handler =
+ (struct target_func_ptr *)g2h(ka->_sa_handler);
+ env->nip = tswapl(handler->entry);
+ env->gpr[2] = tswapl(handler->toc);
+ } else {
+ /* ELFv2 PPC64 function pointers are entry points, but R12
+ * must also be set */
+ env->nip = tswapl((target_ulong) ka->_sa_handler);
+ env->gpr[12] = env->nip;
+ }
+#else
env->nip = (target_ulong) ka->_sa_handler;
+#endif
+
/* Signal handlers are entered in big-endian mode. */
env->msr &= ~MSR_LE;
sigsegv:
unlock_user_struct(frame, frame_addr, 1);
- qemu_log("segfaulting from setup_frame\n");
force_sig(TARGET_SIGSEGV);
}
target_sigset_t *set, CPUPPCState *env)
{
struct target_rt_sigframe *rt_sf;
- struct target_mcontext *frame;
+ uint32_t *trampptr = 0;
+ struct target_mcontext *mctx = 0;
target_ulong rt_sf_addr, newsp = 0;
int i, err = 0;
- int signal;
+#if defined(TARGET_PPC64)
+ struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
+#endif
rt_sf_addr = get_sigframe(ka, env, sizeof(*rt_sf));
if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
goto sigsegv;
- signal = current_exec_domain_sig(sig);
-
- copy_siginfo_to_user(&rt_sf->info, info);
+ tswap_siginfo(&rt_sf->info, info);
__put_user(0, &rt_sf->uc.tuc_flags);
__put_user(0, &rt_sf->uc.tuc_link);
&rt_sf->uc.tuc_stack.ss_flags);
__put_user(target_sigaltstack_used.ss_size,
&rt_sf->uc.tuc_stack.ss_size);
+#if !defined(TARGET_PPC64)
__put_user(h2g (&rt_sf->uc.tuc_mcontext),
&rt_sf->uc.tuc_regs);
+#endif
for(i = 0; i < TARGET_NSIG_WORDS; i++) {
__put_user(set->sig[i], &rt_sf->uc.tuc_sigmask.sig[i]);
}
- frame = &rt_sf->uc.tuc_mcontext;
- save_user_regs(env, frame, TARGET_NR_rt_sigreturn);
+#if defined(TARGET_PPC64)
+ mctx = &rt_sf->uc.tuc_sigcontext.mcontext;
+ trampptr = &rt_sf->trampoline[0];
+#else
+ mctx = &rt_sf->uc.tuc_mcontext;
+ trampptr = (uint32_t *)&rt_sf->uc.tuc_mcontext.tramp;
+#endif
+
+ save_user_regs(env, mctx);
+ encode_trampoline(TARGET_NR_rt_sigreturn, trampptr);
/* The kernel checks for the presence of a VDSO here. We don't
emulate a vdso, so use a sigreturn system call. */
- env->lr = (target_ulong) h2g(frame->tramp);
+ env->lr = (target_ulong) h2g(trampptr);
/* Turn off all fp exceptions. */
env->fpscr = 0;
/* Create a stack frame for the caller of the handler. */
newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
- __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
+ err |= put_user(env->gpr[1], newsp, target_ulong);
if (err)
goto sigsegv;
/* Set up registers for signal handler. */
env->gpr[1] = newsp;
- env->gpr[3] = (target_ulong) signal;
+ env->gpr[3] = (target_ulong) sig;
env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
env->gpr[6] = (target_ulong) h2g(rt_sf);
+
+#if defined(TARGET_PPC64)
+ if (get_ppc64_abi(image) < 2) {
+ /* ELFv1 PPC64 function pointers are pointers to OPD entries. */
+ struct target_func_ptr *handler =
+ (struct target_func_ptr *)g2h(ka->_sa_handler);
+ env->nip = tswapl(handler->entry);
+ env->gpr[2] = tswapl(handler->toc);
+ } else {
+ /* ELFv2 PPC64 function pointers are entry points, but R12
+ * must also be set */
+ env->nip = tswapl((target_ulong) ka->_sa_handler);
+ env->gpr[12] = env->nip;
+ }
+#else
env->nip = (target_ulong) ka->_sa_handler;
+#endif
+
/* Signal handlers are entered in big-endian mode. */
env->msr &= ~MSR_LE;
sigsegv:
unlock_user_struct(rt_sf, rt_sf_addr, 1);
- qemu_log("segfaulting from setup_rt_frame\n");
force_sig(TARGET_SIGSEGV);
}
goto sigsegv;
#if defined(TARGET_PPC64)
- set.sig[0] = sc->oldmask + ((long)(sc->_unused[3]) << 32);
+ set.sig[0] = sc->oldmask + ((uint64_t)(sc->_unused[3]) << 32);
#else
__get_user(set.sig[0], &sc->oldmask);
__get_user(set.sig[1], &sc->_unused[3]);
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;
}
return 1;
#if defined(TARGET_PPC64)
- fprintf (stderr, "do_setcontext: not implemented\n");
- return 0;
+ mcp_addr = h2g(ucp) +
+ offsetof(struct target_ucontext, tuc_sigcontext.mcontext);
#else
__get_user(mcp_addr, &ucp->tuc_regs);
+#endif
if (!lock_user_struct(VERIFY_READ, mcp, mcp_addr, 1))
return 1;
unlock_user_struct(mcp, mcp_addr, 1);
return 0;
-#endif
}
long do_rt_sigreturn(CPUPPCState *env)
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;
/* moveq #,d0; trap #0 */
__put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
- (long *)(frame->retcode));
+ (uint32_t *)(frame->retcode));
/* Set up to return from userspace */
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;
uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
__put_user(uc_addr, &frame->puc);
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
/* Create the ucontext */
/* moveq #,d0; notb d0; trap #0 */
__put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
- (long *)(frame->retcode + 0));
- __put_user(0x4e40, (short *)(frame->retcode + 4));
+ (uint32_t *)(frame->retcode + 0));
+ __put_user(0x4e40, (uint16_t *)(frame->retcode + 4));
if (err)
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;
}
- copy_siginfo_to_user(&frame->info, info);
+ tswap_siginfo(&frame->info, info);
__put_user(0, &frame->uc.tuc_flags);
__put_user(0, &frame->uc.tuc_link);
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
projects / qemu.git / blobdiff