backends/arm_init.c - main - niceSOFT/elfutils

backends/arm_init.c
78 строк2 KB
Serhei Makarov
backends/: add 32-bit ARM sample_regs support
14 апр 2026, 23:51
14 апр 2026, 23:51b3a113a
/* Initialization of Arm specific backend library.
   Copyright (C) 2002, 2005, 2009, 2013, 2014, 2015, 2017, 2026 Red Hat, Inc.
   This file is part of elfutils.
   Written by Ulrich Drepper <drepper@redhat.com>, 2002.

   This file is free software; you can redistribute it and/or modify
   it under the terms of either

     * the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at
       your option) any later version

   or

     * the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at
       your option) any later version

   or both in parallel, as here.

   elfutils 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
   General Public License for more details.

   You should have received copies of the GNU General Public License and
   the GNU Lesser General Public License along with this program.  If
   not, see <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#define BACKEND		arm_
#define RELOC_PREFIX	R_ARM_
#include "libebl_CPU.h"
#include "libebl_PERF_FLAGS.h"

/* This defines the common reloc hooks based on arm_reloc.def.  */
#include "common-reloc.c"


Ebl *
arm_init (Elf *elf __attribute__ ((unused)),
	  GElf_Half machine __attribute__ ((unused)),
	  Ebl *eh)
{
  /* We handle it.  */
  arm_init_reloc (eh);
  HOOK (eh, segment_type_name);
  HOOK (eh, section_type_name);
  HOOK (eh, machine_flag_check);
  HOOK (eh, reloc_simple_type);
  HOOK (eh, register_info);
  HOOK (eh, core_note);
  HOOK (eh, auxv_info);
  HOOK (eh, check_object_attribute);
  HOOK (eh, return_value_location);
  HOOK (eh, abi_cfi);
  HOOK (eh, check_reloc_target_type);
  HOOK (eh, symbol_type_name);
  HOOK (eh, data_marker_symbol);
  HOOK (eh, machine_flag_name);

  /* We only unwind the core integer registers.  */
  eh->frame_nregs = 16;
  HOOK (eh, set_initial_registers_tid);
  /* set_initial_registers_sample is default ver  */
  HOOK (eh, sample_sp_pc);
  /* sample_perf_regs_mapping is default ver  */
  eh->perf_frame_regs_mask = PERF_FRAME_REGISTERS_ARM;
  __libebl_init_cached_regs_mapping (eh);

  /* Bit zero encodes whether an function address is THUMB or ARM. */
  eh->func_addr_mask = ~(GElf_Addr)1;

  return eh;
}