diff options
Diffstat (limited to 'arch/m32r/kernel')
| -rw-r--r-- | arch/m32r/kernel/signal.c | 57 |
1 files changed, 22 insertions, 35 deletions
diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c index d503568cb753..95408b8f130a 100644 --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -162,28 +162,22 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * Determine which stack to use.. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) +get_sigframe(struct ksignal *ksig, unsigned long sp, size_t frame_size) { - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (sas_ss_flags(sp) == 0) - sp = current->sas_ss_sp + current->sas_ss_size; - } - - return (void __user *)((sp - frame_size) & -8ul); + return (void __user *)((sigsp(sp, ksig) - frame_size) & -8ul); } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; int err = 0; - int signal; + int signal, sig = ksig->sig; - frame = get_sigframe(ka, regs->spu, sizeof(*frame)); + frame = get_sigframe(ksig, regs->spu, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -193,13 +187,13 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(signal, &frame->sig); if (err) - goto give_sigsegv; + return -EFAULT; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) - goto give_sigsegv; + return -EFAULT; /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -208,17 +202,17 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. */ - regs->lr = (unsigned long)ka->sa.sa_restorer; + regs->lr = (unsigned long)ksig->ka.sa.sa_restorer; /* Set up registers for signal handler */ regs->spu = (unsigned long)frame; regs->r0 = signal; /* Arg for signal handler */ regs->r1 = (unsigned long)&frame->info; regs->r2 = (unsigned long)&frame->uc; - regs->bpc = (unsigned long)ka->sa.sa_handler; + regs->bpc = (unsigned long)ksig->ka.sa.sa_handler; set_fs(USER_DS); @@ -228,10 +222,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static int prev_insn(struct pt_regs *regs) @@ -252,9 +242,10 @@ static int prev_insn(struct pt_regs *regs) */ static void -handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { + int ret; + /* Are we from a system call? */ if (regs->syscall_nr >= 0) { /* If so, check system call restarting.. */ @@ -265,7 +256,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r0 = -EINTR; break; } @@ -278,10 +269,9 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, } /* Set up the stack frame */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs)) - return; + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -291,9 +281,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, */ static void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -304,8 +292,7 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Re-enable any watchpoints before delivering the * signal to user space. The processor register will * have been cleared if the watchpoint triggered @@ -313,7 +300,7 @@ static void do_signal(struct pt_regs *regs) */ /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, regs); + handle_signal(&ksig, regs); return; } |