include/elf/arc.h

   1 /* ARC ELF support for BFD.
   2    Copyright (C) 1995-2021 Free Software Foundation, Inc.
   3    Contributed by Doug Evans, (dje@cygnus.com)
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 /* This file holds definitions specific to the ARC ELF ABI.  */
  23
  24 #ifndef _ELF_ARC_H
  25 #define _ELF_ARC_H
  26
  27 #include "elf/reloc-macros.h"
  28
  29 /* Relocations.  */
  30
  31 #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
  32   RELOC_NUMBER(R_##TYPE, VALUE)
  33
  34 START_RELOC_NUMBERS (elf_arc_reloc_type)
  35 #include "arc-reloc.def"
  36 END_RELOC_NUMBERS (R_ARC_max)
  37
  38 #undef ARC_RELOC_HOWTO
  39
  40 /* Processor specific flags for the ELF header e_flags field.  */
  41
  42 #define EF_ARC_MACH_MSK  0x000000ff
  43 #define EF_ARC_OSABI_MSK 0x00000f00
  44 #define EF_ARC_ALL_MSK   (EF_ARC_MACH_MSK | EF_ARC_OSABI_MSK)
  45
  46 /* Various CPU types.  These numbers are exposed in the ELF header flags
  47    (e_flags field), and so must never change.  */
  48 #define E_ARC_MACH_ARC600       0x00000002
  49 #define E_ARC_MACH_ARC601       0x00000004
  50 #define E_ARC_MACH_ARC700       0x00000003
  51 #define EF_ARC_CPU_ARCV2EM      0x00000005
  52 #define EF_ARC_CPU_ARCV2HS      0x00000006
  53
  54 /* ARC Linux specific ABIs.  */
  55 #define E_ARC_OSABI_ORIG        0x00000000   /* MUST be 0 for back-compat.  */
  56 #define E_ARC_OSABI_V2          0x00000200
  57 #define E_ARC_OSABI_V3          0x00000300
  58 #define E_ARC_OSABI_V4          0x00000400
  59 #define E_ARC_OSABI_CURRENT     E_ARC_OSABI_V4
  60 /* Leave bits 0xf0 alone in case we ever have more than 16 cpu types.  */
  61
  62 /* File contains position independent code.  */
  63
  64 #define EF_ARC_PIC 0x00000100
  65
  66 /* Additional section types.  */
  67 #define SHT_ARC_ATTRIBUTES     0x70000001       /* Section holds attributes.  */
  68
  69 /* ARC ABI object attributes.  */
  70 enum {
  71   /* 0-3 are generic.  */
  72   Tag_ARC_PCS_config = 4,
  73   Tag_ARC_CPU_base,
  74   Tag_ARC_CPU_variation,
  75   Tag_ARC_CPU_name,
  76   Tag_ARC_ABI_rf16,
  77   Tag_ARC_ABI_osver,
  78   Tag_ARC_ABI_sda,
  79   Tag_ARC_ABI_pic,
  80   Tag_ARC_ABI_tls,
  81   Tag_ARC_ABI_enumsize,
  82   Tag_ARC_ABI_exceptions,
  83   Tag_ARC_ABI_double_size,
  84   Tag_ARC_ISA_config,
  85   Tag_ARC_ISA_apex,
  86   Tag_ARC_ISA_mpy_option,
  87   Tag_ARC_ATR_version = 20
  88 };
  89
  90 /* Values for the Tag_ARC_cpu_base attribute.  */
  91 #define TAG_CPU_NONE      0
  92 #define TAG_CPU_ARC6xx    1
  93 #define TAG_CPU_ARC7xx    2
  94 #define TAG_CPU_ARCEM     3
  95 #define TAG_CPU_ARCHS     4
  96
  97 #endif /* _ELF_ARC_H */