diff options
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/entry.S | 12 | ||||
| -rw-r--r-- | arch/sparc/kernel/ptrace.c | 26 | ||||
| -rw-r--r-- | arch/sparc/kernel/rtrap.S | 5 | ||||
| -rw-r--r-- | arch/sparc/kernel/signal.c | 16 |
4 files changed, 39 insertions, 20 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index 2f96256dc51..e8cdf715a54 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -1196,8 +1196,9 @@ sys_rt_sigreturn: be 1f nop + add %sp, STACKFRAME_SZ, %o0 call syscall_trace - nop + mov 1, %o1 1: /* We are returning to a signal handler. */ @@ -1287,8 +1288,12 @@ linux_fast_syscall: mov %i3, %o3 linux_syscall_trace: + add %sp, STACKFRAME_SZ, %o0 call syscall_trace - nop + mov 0, %o1 + cmp %o0, 0 + bne 3f + mov -ENOSYS, %o0 mov %i0, %o0 mov %i1, %o1 mov %i2, %o2 @@ -1337,6 +1342,7 @@ syscall_is_too_hard: call %l7 mov %i5, %o5 +3: st %o0, [%sp + STACKFRAME_SZ + PT_I0] ret_sys_call: @@ -1374,6 +1380,8 @@ ret_sys_call: st %l2, [%sp + STACKFRAME_SZ + PT_NPC] linux_syscall_trace2: + add %sp, STACKFRAME_SZ, %o0 + mov 1, %o1 call syscall_trace add %l1, 0x4, %l2 /* npc = npc+4 */ st %l1, [%sp + STACKFRAME_SZ + PT_PC] diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c index 81f3b929743..20699c70141 100644 --- a/arch/sparc/kernel/ptrace.c +++ b/arch/sparc/kernel/ptrace.c @@ -21,6 +21,7 @@ #include <linux/signal.h> #include <linux/regset.h> #include <linux/elf.h> +#include <linux/tracehook.h> #include <asm/pgtable.h> #include <asm/system.h> @@ -450,21 +451,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) return ret; } -asmlinkage void syscall_trace(void) +asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p) { - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; - if (!(current->ptrace & PT_PTRACED)) - return; - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig (current->exit_code, current, 1); - current->exit_code = 0; + int ret = 0; + + if (test_thread_flag(TIF_SYSCALL_TRACE)) { + if (syscall_exit_p) + tracehook_report_syscall_exit(regs, 0); + else + ret = tracehook_report_syscall_entry(regs); } + + return ret; } diff --git a/arch/sparc/kernel/rtrap.S b/arch/sparc/kernel/rtrap.S index 891f460b7b9..4da2e1f6629 100644 --- a/arch/sparc/kernel/rtrap.S +++ b/arch/sparc/kernel/rtrap.S @@ -69,12 +69,13 @@ ret_trap_lockless_ipi: ld [%curptr + TI_FLAGS], %g2 signal_p: - andcc %g2, (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %g0 + andcc %g2, _TIF_DO_NOTIFY_RESUME_MASK, %g0 bz,a ret_trap_continue ld [%sp + STACKFRAME_SZ + PT_PSR], %t_psr + mov %g2, %o2 mov %l5, %o1 - call do_signal + call do_notify_resume add %sp, STACKFRAME_SZ, %o0 ! pt_regs ptr /* Fall through. */ diff --git a/arch/sparc/kernel/signal.c b/arch/sparc/kernel/signal.c index 3fd1df9f9ba..c94f91c8b6e 100644 --- a/arch/sparc/kernel/signal.c +++ b/arch/sparc/kernel/signal.c @@ -18,6 +18,7 @@ #include <linux/smp.h> #include <linux/binfmts.h> /* do_coredum */ #include <linux/bitops.h> +#include <linux/tracehook.h> #include <asm/uaccess.h> #include <asm/ptrace.h> @@ -513,7 +514,7 @@ 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. */ -asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0) +static void do_signal(struct pt_regs *regs, unsigned long orig_i0) { struct k_sigaction ka; int restart_syscall; @@ -552,6 +553,8 @@ asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0) */ if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); + + tracehook_signal_handler(signr, &info, &ka, regs, 0); return; } if (restart_syscall && @@ -579,6 +582,17 @@ asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0) } } +void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, + unsigned long thread_info_flags) +{ + if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) + do_signal(regs, orig_i0); + if (thread_info_flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } +} + asmlinkage int do_sys_sigstack(struct sigstack __user *ssptr, struct sigstack __user *ossptr, unsigned long sp) |