Line data    Source code

       1             : /* Fetch live process registers from TID.
       2             :    Copyright (C) 2013 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             : 
       5             :    This file is free software; you can redistribute it and/or modify
       6             :    it under the terms of either
       7             : 
       8             :      * the GNU Lesser General Public License as published by the Free
       9             :        Software Foundation; either version 3 of the License, or (at
      10             :        your option) any later version
      11             : 
      12             :    or
      13             : 
      14             :      * the GNU General Public License as published by the Free
      15             :        Software Foundation; either version 2 of the License, or (at
      16             :        your option) any later version
      17             : 
      18             :    or both in parallel, as here.
      19             : 
      20             :    elfutils is distributed in the hope that it will be useful, but
      21             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23             :    General Public License for more details.
      24             : 
      25             :    You should have received copies of the GNU General Public License and
      26             :    the GNU Lesser General Public License along with this program.  If
      27             :    not, see <http://www.gnu.org/licenses/>.  */
      28             : 
      29             : #ifdef HAVE_CONFIG_H
      30             : # include <config.h>
      31             : #endif
      32             : 
      33             : #include <stdlib.h>
      34             : #if defined(__x86_64__) && defined(__linux__)
      35             : # include <sys/user.h>
      36             : # include <sys/ptrace.h>
      37             : #endif
      38             : 
      39             : #define BACKEND x86_64_
      40             : #include "libebl_CPU.h"
      41             : 
      42             : bool
      43           4 : x86_64_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
      44             :                           ebl_tid_registers_t *setfunc __attribute__ ((unused)),
      45             :                                   void *arg __attribute__ ((unused)))
      46             : {
      47             : #if !defined(__x86_64__) || !defined(__linux__)
      48             :   return false;
      49             : #else /* __x86_64__ */
      50           4 :   struct user_regs_struct user_regs;
      51           4 :   if (ptrace (PTRACE_GETREGS, tid, NULL, &user_regs) != 0)
      52             :     return false;
      53           4 :   Dwarf_Word dwarf_regs[17];
      54           4 :   dwarf_regs[0] = user_regs.rax;
      55           4 :   dwarf_regs[1] = user_regs.rdx;
      56           4 :   dwarf_regs[2] = user_regs.rcx;
      57           4 :   dwarf_regs[3] = user_regs.rbx;
      58           4 :   dwarf_regs[4] = user_regs.rsi;
      59           4 :   dwarf_regs[5] = user_regs.rdi;
      60           4 :   dwarf_regs[6] = user_regs.rbp;
      61           4 :   dwarf_regs[7] = user_regs.rsp;
      62           4 :   dwarf_regs[8] = user_regs.r8;
      63           4 :   dwarf_regs[9] = user_regs.r9;
      64           4 :   dwarf_regs[10] = user_regs.r10;
      65           4 :   dwarf_regs[11] = user_regs.r11;
      66           4 :   dwarf_regs[12] = user_regs.r12;
      67           4 :   dwarf_regs[13] = user_regs.r13;
      68           4 :   dwarf_regs[14] = user_regs.r14;
      69           4 :   dwarf_regs[15] = user_regs.r15;
      70           4 :   dwarf_regs[16] = user_regs.rip;
      71           4 :   return setfunc (0, 17, dwarf_regs, arg);
      72             : #endif /* __x86_64__ */
      73             : }