regs.c revision 61da33723c5fb09762e38bd39a26ee15d62ffebc 
1#if HAVE_CONFIG_H
2#include "config.h"
3#endif
4
5#include <sys/types.h>
6#include <sys/ptrace.h>
7#include <asm/ptrace.h>
8
9#include "common.h"
10
11#if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR))
12# define PTRACE_PEEKUSER PTRACE_PEEKUSR
13#endif
14
15#if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR))
16# define PTRACE_POKEUSER PTRACE_POKEUSR
17#endif
18
19void *
20get_instruction_pointer(Process *proc) {
21	return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_NIP, 0);
22}
23
24void
25set_instruction_pointer(Process *proc, void *addr) {
26	ptrace(PTRACE_POKEUSER, proc->pid, sizeof(long)*PT_NIP, addr);
27}
28
29void *
30get_stack_pointer(Process *proc) {
31	return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_R1, 0);
32}
33
34void *
35get_return_addr(Process *proc, void *stack_pointer) {
36	return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long) * PT_LNK,
37			      0);
38}
39
40/* Grab the value of CTR registers.  */
41void *
42get_count_register (Process *proc) {
43	return (void *) ptrace (PTRACE_PEEKUSER, proc->pid,
44				sizeof (long) * PT_CTR, 0);
45}
46