diff options
Diffstat (limited to 'linux-user/signal.c')
| -rw-r--r-- | linux-user/signal.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 7c2a963e7c..5a3e5bff5e 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -3032,171 +3032,6 @@ sigsegv: return -TARGET_QEMU_ESIGRETURN; } -#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; - abi_ulong retcode[2]; -}; - -#define INSN_MOVELI_R10_139 0x00045fe551483000ULL /* { moveli r10, 139 } */ -#define INSN_SWINT1 0x286b180051485000ULL /* { swint1 } */ - - -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); - - if (ka->sa_flags & TARGET_SA_RESTORER) { - restorer = (unsigned long) ka->sa_restorer; - } else { - __put_user(INSN_MOVELI_R10_139, &frame->retcode[0]); - __put_user(INSN_SWINT1, &frame->retcode[1]); - restorer = frame_addr + offsetof(struct target_rt_sigframe, retcode); - } - 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: - force_sigsegv(sig); -} - -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); - set_sigmask(&set); - - 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 -TARGET_QEMU_ESIGRETURN; - - - badframe: - unlock_user_struct(frame, frame_addr, 0); - force_sig(TARGET_SIGSEGV); - return -TARGET_QEMU_ESIGRETURN; -} - #elif defined(TARGET_RISCV) /* Signal handler invocation must be transparent for the code being |