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support PTRACE_SINGLESTEP.

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support debug/int3 exception.
This commit is contained in:
Susumu Komae
2015-01-29 15:48:05 +09:00
committed by postpeta
parent f97f8dbab3
commit bd5f43b119
5 changed files with 95 additions and 3 deletions
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15
kernel/syscall.c
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@ -2557,6 +2557,8 @@ SYSCALL_DECLARE(getrlimit)
}
extern int ptrace_traceme(void);
extern void clear_single_step(struct process *proc);
extern void set_single_step(struct process *proc);
static int ptrace_wakeup_sig(int pid, long request, long data) {
dkprintf("ptrace_wakeup_sig,pid=%d,data=%08x\n", pid, data);
@ -2588,6 +2590,14 @@ static int ptrace_wakeup_sig(int pid, long request, long data) {
}
break;
case PTRACE_CONT:
case PTRACE_SINGLESTEP:
case PTRACE_SYSCALL:
if (request == PTRACE_SINGLESTEP) {
set_single_step(child);
}
if (request == PTRACE_SYSCALL) {
/* TODO: may set PTRACE_SYSCALL flag */
}
if(data != 0 && data != SIGSTOP) {
struct process *proc;
@ -2823,8 +2833,6 @@ out:
return ret;
}
extern void clear_single_step(struct process *proc);
static int ptrace_detach(int pid, int data)
{
int error;
@ -2991,7 +2999,8 @@ SYSCALL_DECLARE(ptrace)
dkprintf("PTRACE_POKEDATA: addr=%p data=%p\n", addr, data);
break;
case PTRACE_SINGLESTEP:
dkprintf("ptrace: unimplemented ptrace(PTRACE_SINGLESTEP) called.\n");
dkprintf("ptrace: PTRACE_SINGLESTEP: data=%d\n", data);
error = ptrace_wakeup_sig(pid, request, data);
break;
case PTRACE_GETFPREGS:
dkprintf("ptrace: unimplemented ptrace(PTRACE_GETFPREGS) called.\n");