diff options
Diffstat (limited to 'arch/blackfin/kernel/signal.c')
| -rw-r--r-- | arch/blackfin/kernel/signal.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c index e0fd63e9e38a..d536f35d1f43 100644 --- a/arch/blackfin/kernel/signal.c +++ b/arch/blackfin/kernel/signal.c @@ -1,5 +1,5 @@ /* - * Copyright 2004-2009 Analog Devices Inc. + * Copyright 2004-2010 Analog Devices Inc. * * Licensed under the GPL-2 or later */ @@ -17,6 +17,7 @@ #include <asm/cacheflush.h> #include <asm/ucontext.h> #include <asm/fixed_code.h> +#include <asm/syscall.h> #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) @@ -50,6 +51,9 @@ rt_restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *p unsigned long usp = 0; int err = 0; + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + #define RESTORE(x) err |= __get_user(regs->x, &sc->sc_##x) /* restore passed registers */ @@ -206,16 +210,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, regs->r1 = (unsigned long)(&frame->info); regs->r2 = (unsigned long)(&frame->uc); - /* - * Clear the trace flag when entering the signal handler, but - * notify any tracer that was single-stepping it. The tracer - * may want to single-step inside the handler too. - */ - if (regs->syscfg & TRACE_BITS) { - regs->syscfg &= ~TRACE_BITS; - ptrace_notify(SIGTRAP); - } - return 0; give_sigsegv: @@ -247,6 +241,11 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) regs->r0 = regs->orig_r0; regs->pc -= 2; break; + + case -ERESTART_RESTARTBLOCK: + regs->p0 = __NR_restart_syscall; + regs->pc -= 2; + break; } } @@ -315,6 +314,9 @@ asmlinkage void do_signal(struct pt_regs *regs) * clear the TIF_RESTORE_SIGMASK flag */ if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); + + tracehook_signal_handler(signr, &info, &ka, regs, + test_thread_flag(TIF_SINGLESTEP)); } return; |