1e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata/* 2e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * This file is part of ltrace. 344ae188c8dcd2727e383dcac0d46c3f784d0da5fPetr Machata * Copyright (C) 2013 Petr Machata, Red Hat Inc. 4e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * Copyright (C) 1998,2002,2004,2008,2009 Juan Cespedes 5e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 6e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * This program is free software; you can redistribute it and/or 7e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * modify it under the terms of the GNU General Public License as 8e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * published by the Free Software Foundation; either version 2 of the 9e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * License, or (at your option) any later version. 10e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 11e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * This program is distributed in the hope that it will be useful, but 12e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * WITHOUT ANY WARRANTY; without even the implied warranty of 13e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * General Public License for more details. 15e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 16e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * You should have received a copy of the GNU General Public License 17e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * along with this program; if not, write to the Free Software 18e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 19e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata * 02110-1301 USA 20e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata */ 21e99af270a60891e68d465c4cd97dbe29cd1a05e4Petr Machata 22d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#include "config.h" 23d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes 24d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#include <sys/types.h> 25d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#include <sys/ptrace.h> 26d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#include <asm/ptrace.h> 27d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes 28366c2f46d844f040458df9b7e35fc3b8527ed2d3Petr Machata#include "proc.h" 29f728123bd75a65a6a1536e198c3c30719e494e71Juan Cespedes#include "common.h" 305c3fe0697b202cc7d95e90459de0fb312b297b27Juan Cespedes 31d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR)) 32d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes# define PTRACE_PEEKUSER PTRACE_PEEKUSR 33d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#endif 34d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes 35d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR)) 36d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes# define PTRACE_POKEUSER PTRACE_POKEUSR 37d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes#endif 38d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes 39f13505251e6402460f6cc7ec84e0d8ca91607b4fJuan Cespedesvoid * 40929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machataget_instruction_pointer(struct process *proc) 41929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machata{ 422d45b1a8e26a36a9f85dc49e721c4390ca93dc40Ian Wienand return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, 4 * PT_PC, 0); 43d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes} 44d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes 45f13505251e6402460f6cc7ec84e0d8ca91607b4fJuan Cespedesvoid 46929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machataset_instruction_pointer(struct process *proc, void *addr) 47929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machata{ 482d45b1a8e26a36a9f85dc49e721c4390ca93dc40Ian Wienand ptrace(PTRACE_POKEUSER, proc->pid, 4 * PT_PC, addr); 498f8282f72eaeadc5419cd5470100e8dcaba5b7fdJuan Cespedes} 508f8282f72eaeadc5419cd5470100e8dcaba5b7fdJuan Cespedes 51f13505251e6402460f6cc7ec84e0d8ca91607b4fJuan Cespedesvoid * 52929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machataget_stack_pointer(struct process *proc) 53929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machata{ 542d45b1a8e26a36a9f85dc49e721c4390ca93dc40Ian Wienand return (void *)ptrace(PTRACE_PEEKUSER, proc->pid, 4 * PT_USP, 0); 55d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes} 56d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes 57f13505251e6402460f6cc7ec84e0d8ca91607b4fJuan Cespedesvoid * 58929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machataget_return_addr(struct process *proc, void *stack_pointer) 59929bd57ca202fd2f2e8485ebf65d683e664f67b5Petr Machata{ 605c3fe0697b202cc7d95e90459de0fb312b297b27Juan Cespedes return (void *)ptrace(PTRACE_PEEKTEXT, proc->pid, stack_pointer, 0); 61d44c6b8b090b8b7aa9d971d9e0bfd848732a3071Juan Cespedes} 62