[root@monitor ~]# uname -a
Linux monitor 2.6.32-431.23.3.el6.x86_64 #1 SMP Thu Jul 31 17:20:51 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
[root@monitor ~]# cat /usr/include/sys/reg.h
/* Copyright (C) 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. The GNU C Library 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
Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */ #ifndef _SYS_REG_H
#define _SYS_REG_H 1
#include <bits/wordsize.h> #if __WORDSIZE == 64
/* Index into an array of 8 byte longs returned from ptrace for
location of the users' stored general purpose registers. */ # define R15
# define R14
# define R13
# define R12
# define RBP
# define RBX
# define R11
# define R10
# define R9
# define R8
# define RAX
# define RCX
# define RDX
# define RSI
# define RDI
# define ORIG_RAX
# define RIP
# define CS
# define EFLAGS
# define RSP
# define SS
# define FS_BASE
# define GS_BASE
# define DS
# define ES
# define FS
# define GS
#else /* Index into an array of 4 byte integers returned from ptrace for
* location of the users' stored general purpose registers. */ # define EBX
# define ECX
# define EDX
# define ESI
# define EDI
# define EBP
# define EAX
# define DS
# define ES
# define FS
# define GS
# define ORIG_EAX
# define EIP
# define CS
# define EFL
# define UESP
# define SS
#endif #endif
[root@monitor ~]#