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x86: x86 ptrace merge syscall trace 

This moves the 64-bit syscall tracing functions into ptrace.c,
so that ptrace_64.c becomes entirely obsolete.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath 2008-01-30 13:31:01 +01:00 committed by Ingo Molnar
parent e9c86c789f
commit 86976cd805
1 changed files with 64 additions and 0 deletions
arch/x86/kernel
ptrace.c

64
arch/x86/kernel/ptrace.c
View File

@ -634,6 +634,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return ret; return ret;
} }
#ifdef CONFIG_X86_32
void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code) void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
{ {
struct siginfo info; struct siginfo info;
@ -731,3 +733,65 @@ out:
audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax); audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
return 1; return 1;
} }
#else /* CONFIG_X86_64 */
static void syscall_trace(struct pt_regs *regs)
{
#if 0
printk("trace %s ip %lx sp %lx ax %d origrax %d caller %lx tiflags %x ptrace %x\n",
current->comm,
regs->ip, regs->sp, regs->ax, regs->orig_ax, __builtin_return_address(0),
current_thread_info()->flags, current->ptrace);
#endif
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;
}
}
asmlinkage void syscall_trace_enter(struct pt_regs *regs)
{
/* do the secure computing check first */
secure_computing(regs->orig_ax);
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))
syscall_trace(regs);
if (unlikely(current->audit_context)) {
if (test_thread_flag(TIF_IA32)) {
audit_syscall_entry(AUDIT_ARCH_I386,
regs->orig_ax,
regs->bx, regs->cx,
regs->dx, regs->si);
} else {
audit_syscall_entry(AUDIT_ARCH_X86_64,
regs->orig_ax,
regs->di, regs->si,
regs->dx, regs->r10);
}
}
}
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
if (unlikely(current->audit_context))
audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
if ((test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SINGLESTEP))
&& (current->ptrace & PT_PTRACED))
syscall_trace(regs);
}
#endif /* CONFIG_X86_32 */