1e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata/* 2e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * This file is part of ltrace. 3e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * Copyright (C) 2010 Edgar E. Iglesias 4e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 5e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * This program is free software; you can redistribute it and/or 6e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * modify it under the terms of the GNU General Public License as 7e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * published by the Free Software Foundation; either version 2 of the 8e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * License, or (at your option) any later version. 9e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 10e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * This program is distributed in the hope that it will be useful, but 11e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * WITHOUT ANY WARRANTY; without even the implied warranty of 12e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * General Public License for more details. 14e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 15e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * You should have received a copy of the GNU General Public License 16e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * along with this program; if not, write to the Free Software 17e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 02110-1301 USA 19e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata */ 20e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata 21b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#if HAVE_CONFIG_H 22b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#include "config.h" 23b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#endif 24b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 25b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#include <sys/types.h> 26b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#include <sys/ptrace.h> 27b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#include <asm/ptrace.h> 28b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 29366c2f46d844f040458df9b7e35fc3b8527ed2d3Petr Machata#include "proc.h" 30b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#include "common.h" 31b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 32b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR)) 33b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias# define PTRACE_PEEKUSER PTRACE_PEEKUSR 34b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#endif 35b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 36b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR)) 37b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias# define PTRACE_POKEUSER PTRACE_POKEUSR 38b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias#endif 39b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 40929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machatavoid *get_instruction_pointer(struct process *proc) 41b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias{ 42b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, 4 * PT_PPC, 0); 43b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias} 44b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 45929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machatavoid set_instruction_pointer(struct process *proc, void *addr) 46b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias{ 47b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias ptrace(PTRACE_POKEUSER, proc->pid, 4 * PT_PPC, addr); 48b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias} 49b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 50929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machatavoid *get_stack_pointer(struct process *proc) 51b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias{ 52b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, 4 * PT_USP, 0); 53b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias} 54b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias 55929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machatavoid *get_return_addr(struct process *proc, void *stack_pointer) 56b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias{ 57b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, 4 * PT_SRP, 0); 58b1dda4bc2c78429823a5ca7699f3207a7aea2371Edgar E. Iglesias} 59