regs.c revision f670eea50e959eeb9da53d70cad8d43c19494ef0 
1#include "config.h"
2
3#include <sys/types.h>
4#include <sys/ptrace.h>
5#include <asm/ptrace.h>
6
7#include "common.h"
8
9#if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR))
10# define PTRACE_PEEKUSER PTRACE_PEEKUSR
11#endif
12
13#if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR))
14# define PTRACE_POKEUSER PTRACE_POKEUSR
15#endif
16
17void *
18get_instruction_pointer(Process *proc) {
19	return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_NIP, 0);
20}
21
22void
23set_instruction_pointer(Process *proc, void *addr) {
24	ptrace(PTRACE_POKEUSER, proc->pid, sizeof(long)*PT_NIP, addr);
25}
26
27void *
28get_stack_pointer(Process *proc) {
29	return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_R1, 0);
30}
31
32void *
33get_return_addr(Process *proc, void *stack_pointer) {
34	return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_LNK, 0);
35}
36
37void
38set_return_addr(Process *proc, void *addr) {
39	ptrace(PTRACE_POKEUSER, proc->pid, sizeof(long)*PT_LNK, addr);
40}
41
42/* Grab the value of CTR registers.  */
43void *
44get_count_register (Process *proc) {
45	return (void *) ptrace (PTRACE_PEEKUSER, proc->pid,
46				sizeof (long) * PT_CTR, 0);
47}
48