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author | David S. Miller <davem@davemloft.net> | 2008-04-24 10:01:48 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-04-24 10:01:48 (GMT) |
commit | 238468b2ac76020c192a7402c92df5097916bf4a (patch) | |
tree | a951be34bc3a1d2d3a7d6de98c2100e4296e7bd9 /arch/sparc64 | |
parent | 8243e40acb087fcd9e7609333f0b0551391f49fc (diff) | |
download | linux-fsl-qoriq-238468b2ac76020c192a7402c92df5097916bf4a.tar.xz |
[SPARC64]: Use trap type stored in pt_regs to handle syscall restart.
Now that we can check the trap type directly, we don't need the
funny restart_syscall indication from the trap return paths.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r-- | arch/sparc64/kernel/signal.c | 22 | ||||
-rw-r--r-- | arch/sparc64/kernel/signal32.c | 20 |
2 files changed, 21 insertions, 21 deletions
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c index 1c47009..b959597 100644 --- a/arch/sparc64/kernel/signal.c +++ b/arch/sparc64/kernel/signal.c @@ -510,15 +510,20 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs, * want to handle. Thus you cannot kill init even with a SIGKILL even by * mistake. */ -static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_syscall) +static void do_signal(struct pt_regs *regs, unsigned long orig_i0) { - siginfo_t info; struct signal_deliver_cookie cookie; struct k_sigaction ka; - int signr; sigset_t *oldset; + siginfo_t info; + int signr, tt; - cookie.restart_syscall = restart_syscall; + tt = regs->magic & 0x1ff; + if (tt == 0x110 || tt == 0x111 || tt == 0x16d) { + regs->magic &= ~0x1ff; + cookie.restart_syscall = 1; + } else + cookie.restart_syscall = 0; cookie.orig_i0 = orig_i0; if (test_thread_flag(TIF_RESTORE_SIGMASK)) @@ -529,9 +534,8 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_s #ifdef CONFIG_SPARC32_COMPAT if (test_thread_flag(TIF_32BIT)) { extern void do_signal32(sigset_t *, struct pt_regs *, - unsigned long, int); - do_signal32(oldset, regs, orig_i0, - cookie.restart_syscall); + struct signal_deliver_cookie *); + do_signal32(oldset, regs, &cookie); return; } #endif @@ -539,7 +543,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_s signr = get_signal_to_deliver(&info, &ka, regs, &cookie); if (signr > 0) { if (cookie.restart_syscall) - syscall_restart(orig_i0, regs, &ka.sa); + syscall_restart(cookie.orig_i0, regs, &ka.sa); handle_signal(signr, &ka, &info, oldset, regs); /* a signal was successfully delivered; the saved @@ -580,7 +584,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, int restart_s unsigned long thread_info_flags) { if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) - do_signal(regs, orig_i0, restart_syscall); + do_signal(regs, orig_i0); } void ptrace_signal_deliver(struct pt_regs *regs, void *cookie) diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c index 74e0512..43cdec6 100644 --- a/arch/sparc64/kernel/signal32.c +++ b/arch/sparc64/kernel/signal32.c @@ -982,20 +982,16 @@ static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs * mistake. */ void do_signal32(sigset_t *oldset, struct pt_regs * regs, - unsigned long orig_i0, int restart_syscall) + struct signal_deliver_cookie *cookie) { - siginfo_t info; - struct signal_deliver_cookie cookie; struct k_sigaction ka; + siginfo_t info; int signr; - cookie.restart_syscall = restart_syscall; - cookie.orig_i0 = orig_i0; - - signr = get_signal_to_deliver(&info, &ka, regs, &cookie); + signr = get_signal_to_deliver(&info, &ka, regs, cookie); if (signr > 0) { - if (cookie.restart_syscall) - syscall_restart32(orig_i0, regs, &ka.sa); + if (cookie->restart_syscall) + syscall_restart32(cookie->orig_i0, regs, &ka.sa); handle_signal32(signr, &ka, &info, oldset, regs); /* a signal was successfully delivered; the saved @@ -1007,16 +1003,16 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs, clear_thread_flag(TIF_RESTORE_SIGMASK); return; } - if (cookie.restart_syscall && + if (cookie->restart_syscall && (regs->u_regs[UREG_I0] == ERESTARTNOHAND || regs->u_regs[UREG_I0] == ERESTARTSYS || regs->u_regs[UREG_I0] == ERESTARTNOINTR)) { /* replay the system call when we are done */ - regs->u_regs[UREG_I0] = cookie.orig_i0; + regs->u_regs[UREG_I0] = cookie->orig_i0; regs->tpc -= 4; regs->tnpc -= 4; } - if (cookie.restart_syscall && + if (cookie->restart_syscall && regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) { regs->u_regs[UREG_G1] = __NR_restart_syscall; regs->tpc -= 4; |