2 * This file is part of ltrace.
3 * Copyright (C) 2002,2008,2009 Juan Cespedes
4 * Copyright (C) 2009 Juan Cespedes
5 * Copyright (C) 2008 Luis Machado, IBM Corporation
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 #include <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <asm/ptrace.h>
34 #if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR))
35 # define PTRACE_PEEKUSER PTRACE_PEEKUSR
38 #if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR))
39 # define PTRACE_POKEUSER PTRACE_POKEUSR
43 get_instruction_pointer(Process *proc) {
44 return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_NIP, 0);
48 set_instruction_pointer(Process *proc, void *addr)
50 if (ptrace(PTRACE_POKEUSER, proc->pid, sizeof(long)*PT_NIP, addr) != 0)
51 error(0, errno, "set_instruction_pointer");
55 get_stack_pointer(Process *proc) {
56 return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_R1, 0);
60 get_return_addr(Process *proc, void *stack_pointer) {
61 return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, sizeof(long)*PT_LNK, 0);
65 set_return_addr(Process *proc, void *addr) {
66 ptrace(PTRACE_POKEUSER, proc->pid, sizeof(long)*PT_LNK, addr);
69 /* Grab the value of CTR registers. */
71 get_count_register (Process *proc) {
72 return (void *) ptrace (PTRACE_PEEKUSER, proc->pid,
73 sizeof (long) * PT_CTR, 0);