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       1                 :             : /* Populate process registers from a linux perf_events sample.
       2                 :             :    Copyright (C) 2025-2026 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                 :             : #include <assert.h>
      35                 :             : #if (defined __i386__ || defined __x86_64__) && defined(__linux__)
      36                 :             : # include <linux/perf_event.h>
      37                 :             : # include <asm/perf_regs.h>
      38                 :             : #endif
      39                 :             : 
      40                 :             : #define BACKEND i386_
      41                 :             : #include "libebl_CPU.h"
      42                 :             : #include "libebl_PERF_FLAGS.h"
      43                 :             : #if (defined __i386__ || defined __x86_64__) && defined(__linux__)
      44                 :             : # include "x86_initreg_sample.c"
      45                 :             : # define HAVE_X86_INITREG_SAMPLE
      46                 :             : #endif
      47                 :             : 
      48                 :             : bool
      49                 :           0 : i386_sample_sp_pc (const Dwarf_Word *regs, uint32_t n_regs,
      50                 :             :                    const int *regs_mapping, size_t n_regs_mapping,
      51                 :             :                    Dwarf_Word *sp, Dwarf_Word *pc)
      52                 :             : {
      53                 :             :   /* XXX for dwarf_regs indices, compare i386_initreg.c */
      54                 :           0 :   return generic_sample_sp_pc (regs, n_regs, regs_mapping, n_regs_mapping,
      55                 :             :                            sp, 4 /* index of sp in dwarf_regs */,
      56                 :             :                            pc, 8 /* index of pc in dwarf_regs */);
      57                 :             : }
      58                 :             : 
      59                 :             : bool
      60                 :           0 : i386_sample_perf_regs_mapping (Ebl *ebl,
      61                 :             :                                uint64_t perf_regs_mask, uint32_t abi,
      62                 :             :                                const int **regs_mapping,
      63                 :             :                                size_t *n_regs_mapping)
      64                 :             : {
      65                 :             : #ifdef HAVE_X86_INITREG_SAMPLE
      66                 :           0 :   return x86_sample_perf_regs_mapping (ebl, perf_regs_mask, abi,
      67                 :             :                                        regs_mapping, n_regs_mapping);
      68                 :             : #else
      69                 :             :   (void) ebl;
      70                 :             :   (void) perf_regs_mask;
      71                 :             :   (void) abi;
      72                 :             :   (void) regs_mapping;
      73                 :             :   (void) n_regs_mapping;
      74                 :             :   return false;
      75                 :             : #endif
      76                 :             : }