Line data    Source code

       1              : /* Fetch live process registers from TID.
       2              :    Copyright (C) 2024 CIP United 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(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)) && defined(__linux__)
      35              : # include <sys/user.h>
      36              : # include <sys/ptrace.h>
      37              : #include <asm/ptrace.h>
      38              : #endif
      39              : 
      40              : #define BACKEND mips_
      41              : #include "libebl_CPU.h"
      42              : 
      43              : 
      44              : bool
      45            0 : mips_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
      46              :                           ebl_tid_registers_t *setfunc __attribute__ ((unused)),
      47              :                                   void *arg __attribute__ ((unused)))
      48              : {
      49              : #if (!defined(mips) && !defined(__mips) && !defined(__mips__) && !defined(MIPS) && !defined(__MIPS__)) || !defined(__linux__)
      50            0 :   return false;
      51              : #else /* __mips__ */
      52              : /* For PTRACE_GETREGS */
      53              : 
      54              :   struct pt_regs gregs;
      55              :   if (ptrace (PTRACE_GETREGS, tid, 0, &gregs) != 0)
      56              :     return false;
      57              :   if (! setfunc (-1, 1, (Dwarf_Word *) &gregs.cp0_epc, arg))
      58              :     return false;
      59              :   return setfunc (0, 32, (Dwarf_Word *) &gregs.regs[0], arg);
      60              : #endif /* __mips__ */
      61              : }