support PTRACE_SINGLESTEP.

support debug/int3 exception.
2015-01-29 15:48:05 +09:00
parent f97f8dbab3
commit bd5f43b119
5 changed files with 95 additions and 3 deletions
--- a/arch/x86/kernel/syscall.c
+++ b/arch/x86/kernel/syscall.c
@@ -384,6 +384,11 @@ void clear_single_step(struct process *proc)
 	proc->uctx->rflags &= ~RFLAGS_TF;
 }

+void set_single_step(struct process *proc)
+{
+	proc->uctx->rflags |= RFLAGS_TF;
+}
+
 extern void coredump(struct process *proc, void *regs);

 static void ptrace_report_signal(struct process *proc, struct x86_regs *regs, int sig)