| /* |
| * This file is part of ltrace. |
| * Copyright (C) 1998,2001,2004,2008,2009 Juan Cespedes |
| * Copyright (C) 2009 Juan Cespedes |
| * Copyright (C) 2006 Ian Wienand |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of the |
| * License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| * 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <signal.h> |
| #include <sys/ptrace.h> |
| #include <asm/ptrace.h> |
| |
| #include "proc.h" |
| #include "common.h" |
| |
| #if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR)) |
| # define PTRACE_PEEKUSER PTRACE_PEEKUSR |
| #endif |
| |
| #if (!defined(PTRACE_POKEUSER) && defined(PTRACE_POKEUSR)) |
| # define PTRACE_POKEUSER PTRACE_POKEUSR |
| #endif |
| |
| void |
| get_arch_dep(struct process *proc) |
| { |
| } |
| |
| /* Returns 1 if syscall, 2 if sysret, 0 otherwise. |
| */ |
| int |
| syscall_p(struct process *proc, int status, int *sysnum) |
| { |
| int depth; |
| |
| if (WIFSTOPPED(status) |
| && WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) { |
| *sysnum = ptrace(PTRACE_PEEKUSER, proc->pid, 4 * PT_ORIG_D0, 0); |
| if (*sysnum == -1) |
| return 0; |
| if (*sysnum >= 0) { |
| depth = proc->callstack_depth; |
| if (depth > 0 && |
| proc->callstack[depth - 1].is_syscall && |
| proc->callstack[depth - 1].c_un.syscall == *sysnum) { |
| return 2; |
| } else { |
| return 1; |
| } |
| } |
| } |
| return 0; |
| } |