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             : #if (defined __i386__ || defined __x86_64__) && defined(__linux__)
      34             : # include <sys/types.h>
      35             : # include <sys/user.h>
      36             : # include <sys/ptrace.h>
      37             : #endif
      38             : 
      39             : #define BACKEND i386_
      40             : #include "libebl_CPU.h"
      41             : 
      42             : bool
      43           2 : i386_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 __i386__ && !defined __x86_64__) || !defined(__linux__)
      48             :   return false;
      49             : #else /* __i386__ || __x86_64__ */
      50           2 :   struct user_regs_struct user_regs;
      51           2 :   if (ptrace (PTRACE_GETREGS, tid, NULL, &user_regs) != 0)
      52             :     return false;
      53           2 :   Dwarf_Word dwarf_regs[9];
      54             : # if defined __i386__
      55             :   dwarf_regs[0] = user_regs.eax;
      56             :   dwarf_regs[1] = user_regs.ecx;
      57             :   dwarf_regs[2] = user_regs.edx;
      58             :   dwarf_regs[3] = user_regs.ebx;
      59             :   dwarf_regs[4] = user_regs.esp;
      60             :   dwarf_regs[5] = user_regs.ebp;
      61             :   dwarf_regs[6] = user_regs.esi;
      62             :   dwarf_regs[7] = user_regs.edi;
      63             :   dwarf_regs[8] = user_regs.eip;
      64             : # elif defined __x86_64__
      65           2 :   dwarf_regs[0] = user_regs.rax;
      66           2 :   dwarf_regs[1] = user_regs.rcx;
      67           2 :   dwarf_regs[2] = user_regs.rdx;
      68           2 :   dwarf_regs[3] = user_regs.rbx;
      69           2 :   dwarf_regs[4] = user_regs.rsp;
      70           2 :   dwarf_regs[5] = user_regs.rbp;
      71           2 :   dwarf_regs[6] = user_regs.rsi;
      72           2 :   dwarf_regs[7] = user_regs.rdi;
      73           2 :   dwarf_regs[8] = user_regs.rip;
      74             : # else /* (__i386__ || __x86_64__) && (!__i386__ && !__x86_64__) */
      75             : #  error "source file error, it cannot happen"
      76             : # endif /* (__i386__ || __x86_64__) && (!__i386__ && !__x86_64__) */
      77           2 :   return setfunc (0, 9, dwarf_regs, arg);
      78             : #endif /* __i386__ || __x86_64__ */
      79             : }