include/coff/aarch64.h

   1 /* AArch64 COFF support for BFD.
   2    Copyright (C) 2021-2023 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #define COFFAARCH64 1
  21
  22 #define L_LNNO_SIZE 2
  23 #define INCLUDE_COMDAT_FIELDS_IN_AUXENT
  24 #include "coff/external.h"
  25
  26 #define F_AARCH64_ARCHITECTURE_MASK     (0x4000)
  27
  28 #define AARCH64MAGIC    0xaa64  /* From Microsoft specification. */
  29
  30 #undef  BADMAG
  31 #define BADMAG(x) ((x).f_magic != AARCH64MAGIC)
  32 #define AARCH64         1                 /* Customize coffcode.h.  */
  33
  34 #define IMAGE_NT_OPTIONAL_HDR64_MAGIC      0x20b
  35
  36 #define OMAGIC          0404    /* Object files, eg as output.  */
  37 #define ZMAGIC          IMAGE_NT_OPTIONAL_HDR64_MAGIC    /* Demand load format, eg normal ld output 0x10b.  */
  38 #define STMAGIC         0401    /* Target shlib.  */
  39 #define SHMAGIC         0443    /* Host   shlib.  */
  40
  41 /* define some NT default values */
  42 /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
  43 #define NT_SECTION_ALIGNMENT 0x1000
  44 #define NT_FILE_ALIGNMENT    0x200
  45 #define NT_DEF_RESERVE       0x100000
  46 #define NT_DEF_COMMIT        0x1000
  47
  48 /* We use the .rdata section to hold read only data.  */
  49 #define _LIT    ".rdata"
  50
  51 /********************** RELOCATION DIRECTIVES **********************/
  52 struct external_reloc
  53 {
  54   char r_vaddr[4];
  55   char r_symndx[4];
  56   char r_type[2];
  57 };
  58
  59 #define RELOC struct external_reloc
  60 #define RELSZ 10
  61
  62 /* ARM64 relocations types. */
  63
  64
  65 #define IMAGE_REL_ARM64_ABSOLUTE        0x0000  /* No relocation required */
  66 #define IMAGE_REL_ARM64_ADDR32          0x0001  /* The 32-bit VA of the target. */
  67 #define IMAGE_REL_ARM64_ADDR32NB        0x0002  /* The 32-bit RVA of the target. */
  68 #define IMAGE_REL_ARM64_BRANCH26        0x0003  /* The 26-bit relative displacement to the target, for B and BL instructions. */
  69 #define IMAGE_REL_ARM64_PAGEBASE_REL21  0x0004  /* The page base of the target, for ADRP instruction. */
  70 #define IMAGE_REL_ARM64_REL21           0x0005  /* The 12-bit relative displacement to the target, for instruction ADR */
  71 #define IMAGE_REL_ARM64_PAGEOFFSET_12A  0x0006  /* The 12-bit page offset of the target, for instructions ADD/ADDS (immediate) with zero shift. */
  72 #define IMAGE_REL_ARM64_PAGEOFFSET_12L  0x0007  /* The 12-bit page offset of the target, for instruction LDR (indexed, unsigned immediate). */
  73 #define IMAGE_REL_ARM64_SECREL          0x0008  /* The 32-bit offset of the target from the beginning of its section. This is used to support debugging information and static thread local storage. */
  74 #define IMAGE_REL_ARM64_SECREL_LOW12A   0x0009  /* Bit 0:11 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift. */
  75 #define IMAGE_REL_ARM64_SECREL_HIGH12A  0x000A  /* Bit 12:23 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift. */
  76 #define IMAGE_REL_ARM64_SECREL_LOW12L   0x000B  /* Bit 0:11 of section offset of the target, for instruction LDR (indexed, unsigned immediate). */
  77 #define IMAGE_REL_ARM64_TOKEN           0x000C  /* CLR token */
  78 #define IMAGE_REL_ARM64_SECTION         0x000D  /* The 16-bit section index of the section that contains the target. This is used to support debugging information. */
  79 #define IMAGE_REL_ARM64_ADDR64          0x000E  /* The 64-bit VA of the relocation target. */
  80 #define IMAGE_REL_ARM64_BRANCH19        0x000F  /* 19 bit offset << 2 & sign ext. for conditional B */
  81 #define IMAGE_REL_ARM64_BRANCH14        0x0010  /* The 14-bit offset to the relocation target, for instructions TBZ and TBNZ. */
  82 #define IMAGE_REL_ARM64_REL32           0x0011  /* The 32-bit relative address from the byte following the relocation. */
  83
  84 #define ARM_NOTE_SECTION ".note"