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Diffstat (limited to 'linux-user/signal.c')
-rw-r--r--linux-user/signal.c247
1 files changed, 0 insertions, 247 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 58bbb7693c..b9ad4c14a3 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -3031,253 +3031,6 @@ sigsegv:
force_sig(TARGET_SIGSEGV);
return -TARGET_QEMU_ESIGRETURN;
}
-
-#elif defined(TARGET_XTENSA)
-
-struct target_sigcontext {
- abi_ulong sc_pc;
- abi_ulong sc_ps;
- abi_ulong sc_lbeg;
- abi_ulong sc_lend;
- abi_ulong sc_lcount;
- abi_ulong sc_sar;
- abi_ulong sc_acclo;
- abi_ulong sc_acchi;
- abi_ulong sc_a[16];
- abi_ulong sc_xtregs;
-};
-
-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;
-};
-
-struct target_rt_sigframe {
- target_siginfo_t info;
- struct target_ucontext uc;
- /* TODO: xtregs */
- uint8_t retcode[6];
- abi_ulong window[4];
-};
-
-static abi_ulong get_sigframe(struct target_sigaction *sa,
- CPUXtensaState *env,
- unsigned long framesize)
-{
- abi_ulong sp = env->regs[1];
-
- /* This is the X/Open sanctioned signal stack switching. */
- if ((sa->sa_flags & TARGET_SA_ONSTACK) != 0 && !sas_ss_flags(sp)) {
- sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
- }
- return (sp - framesize) & -16;
-}
-
-static int flush_window_regs(CPUXtensaState *env)
-{
- uint32_t wb = env->sregs[WINDOW_BASE];
- uint32_t ws = xtensa_replicate_windowstart(env) >> (wb + 1);
- unsigned d = ctz32(ws) + 1;
- unsigned i;
- int ret = 0;
-
- for (i = d; i < env->config->nareg / 4; i += d) {
- uint32_t ssp, osp;
- unsigned j;
-
- ws >>= d;
- xtensa_rotate_window(env, d);
-
- if (ws & 0x1) {
- ssp = env->regs[5];
- d = 1;
- } else if (ws & 0x2) {
- ssp = env->regs[9];
- ret |= get_user_ual(osp, env->regs[1] - 12);
- osp -= 32;
- d = 2;
- } else if (ws & 0x4) {
- ssp = env->regs[13];
- ret |= get_user_ual(osp, env->regs[1] - 12);
- osp -= 48;
- d = 3;
- } else {
- g_assert_not_reached();
- }
-
- for (j = 0; j < 4; ++j) {
- ret |= put_user_ual(env->regs[j], ssp - 16 + j * 4);
- }
- for (j = 4; j < d * 4; ++j) {
- ret |= put_user_ual(env->regs[j], osp - 16 + j * 4);
- }
- }
- xtensa_rotate_window(env, d);
- g_assert(env->sregs[WINDOW_BASE] == wb);
- return ret == 0;
-}
-
-static int setup_sigcontext(struct target_rt_sigframe *frame,
- CPUXtensaState *env)
-{
- struct target_sigcontext *sc = &frame->uc.tuc_mcontext;
- int i;
-
- __put_user(env->pc, &sc->sc_pc);
- __put_user(env->sregs[PS], &sc->sc_ps);
- __put_user(env->sregs[LBEG], &sc->sc_lbeg);
- __put_user(env->sregs[LEND], &sc->sc_lend);
- __put_user(env->sregs[LCOUNT], &sc->sc_lcount);
- if (!flush_window_regs(env)) {
- return 0;
- }
- for (i = 0; i < 16; ++i) {
- __put_user(env->regs[i], sc->sc_a + i);
- }
- __put_user(0, &sc->sc_xtregs);
- /* TODO: xtregs */
- return 1;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUXtensaState *env)
-{
- abi_ulong frame_addr;
- struct target_rt_sigframe *frame;
- uint32_t ra;
- 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;
- }
-
- if (ka->sa_flags & SA_SIGINFO) {
- tswap_siginfo(&frame->info, info);
- }
-
- __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[1]),
- &frame->uc.tuc_stack.ss_flags);
- __put_user(target_sigaltstack_used.ss_size,
- &frame->uc.tuc_stack.ss_size);
- if (!setup_sigcontext(frame, env)) {
- unlock_user_struct(frame, frame_addr, 0);
- goto give_sigsegv;
- }
- for (i = 0; i < TARGET_NSIG_WORDS; ++i) {
- __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]);
- }
-
- if (ka->sa_flags & TARGET_SA_RESTORER) {
- ra = ka->sa_restorer;
- } else {
- ra = frame_addr + offsetof(struct target_rt_sigframe, retcode);
-#ifdef TARGET_WORDS_BIGENDIAN
- /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
- __put_user(0x22, &frame->retcode[0]);
- __put_user(0x0a, &frame->retcode[1]);
- __put_user(TARGET_NR_rt_sigreturn, &frame->retcode[2]);
- /* Generate instruction: SYSCALL */
- __put_user(0x00, &frame->retcode[3]);
- __put_user(0x05, &frame->retcode[4]);
- __put_user(0x00, &frame->retcode[5]);
-#else
- /* Generate instruction: MOVI a2, __NR_rt_sigreturn */
- __put_user(0x22, &frame->retcode[0]);
- __put_user(0xa0, &frame->retcode[1]);
- __put_user(TARGET_NR_rt_sigreturn, &frame->retcode[2]);
- /* Generate instruction: SYSCALL */
- __put_user(0x00, &frame->retcode[3]);
- __put_user(0x50, &frame->retcode[4]);
- __put_user(0x00, &frame->retcode[5]);
-#endif
- }
- env->sregs[PS] = PS_UM | (3 << PS_RING_SHIFT);
- if (xtensa_option_enabled(env->config, XTENSA_OPTION_WINDOWED_REGISTER)) {
- env->sregs[PS] |= PS_WOE | (1 << PS_CALLINC_SHIFT);
- }
- memset(env->regs, 0, sizeof(env->regs));
- env->pc = ka->_sa_handler;
- env->regs[1] = frame_addr;
- env->sregs[WINDOW_BASE] = 0;
- env->sregs[WINDOW_START] = 1;
-
- env->regs[4] = (ra & 0x3fffffff) | 0x40000000;
- env->regs[6] = sig;
- env->regs[7] = frame_addr + offsetof(struct target_rt_sigframe, info);
- env->regs[8] = frame_addr + offsetof(struct target_rt_sigframe, uc);
- unlock_user_struct(frame, frame_addr, 1);
- return;
-
-give_sigsegv:
- force_sigsegv(sig);
- return;
-}
-
-static void restore_sigcontext(CPUXtensaState *env,
- struct target_rt_sigframe *frame)
-{
- struct target_sigcontext *sc = &frame->uc.tuc_mcontext;
- uint32_t ps;
- int i;
-
- __get_user(env->pc, &sc->sc_pc);
- __get_user(ps, &sc->sc_ps);
- __get_user(env->sregs[LBEG], &sc->sc_lbeg);
- __get_user(env->sregs[LEND], &sc->sc_lend);
- __get_user(env->sregs[LCOUNT], &sc->sc_lcount);
-
- env->sregs[WINDOW_BASE] = 0;
- env->sregs[WINDOW_START] = 1;
- env->sregs[PS] = deposit32(env->sregs[PS],
- PS_CALLINC_SHIFT,
- PS_CALLINC_LEN,
- extract32(ps, PS_CALLINC_SHIFT,
- PS_CALLINC_LEN));
- for (i = 0; i < 16; ++i) {
- __get_user(env->regs[i], sc->sc_a + i);
- }
- /* TODO: xtregs */
-}
-
-long do_rt_sigreturn(CPUXtensaState *env)
-{
- abi_ulong frame_addr = env->regs[1];
- 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);
- set_sigmask(&set);
-
- restore_sigcontext(env, frame);
-
- if (do_sigaltstack(frame_addr +
- offsetof(struct target_rt_sigframe, uc.tuc_stack),
- 0, get_sp_from_cpustate(env)) == -TARGET_EFAULT) {
- goto badframe;
- }
- unlock_user_struct(frame, frame_addr, 0);
- return -TARGET_QEMU_ESIGRETURN;
-
-badframe:
- unlock_user_struct(frame, frame_addr, 0);
- force_sig(TARGET_SIGSEGV);
- return -TARGET_QEMU_ESIGRETURN;
-}
#endif
static void handle_pending_signal(CPUArchState *cpu_env, int sig,
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-17 14:46:23 +0000