1 /* AArch64 COFF support for BFD. 2 Copyright (C) 2021-2022 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 char r_offset[4]; 58 }; 59 60 #define RELOC struct external_reloc 61 #define RELSZ 14 62 63 /* ARM64 relocations types. */ 64 65 66 #define IMAGE_REL_ARM64_ABSOLUTE 0x0000 /* No relocation required */ 67 #define IMAGE_REL_ARM64_ADDR32 0x0001 /* The 32-bit VA of the target. */ 68 #define IMAGE_REL_ARM64_ADDR32NB 0x0002 /* The 32-bit RVA of the target. */ 69 #define IMAGE_REL_ARM64_BRANCH26 0x0003 /* The 26-bit relative displacement to the target, for B and BL instructions. */ 70 #define IMAGE_REL_ARM64_PAGEBASE_REL21 0x0004 /* The page base of the target, for ADRP instruction. */ 71 #define IMAGE_REL_ARM64_REL21 0x0005 /* The 12-bit relative displacement to the target, for instruction ADR */ 72 #define IMAGE_REL_ARM64_PAGEOFFSET_12A 0x0006 /* The 12-bit page offset of the target, for instructions ADD/ADDS (immediate) with zero shift. */ 73 #define IMAGE_REL_ARM64_PAGEOFFSET_12L 0x0007 /* The 12-bit page offset of the target, for instruction LDR (indexed, unsigned immediate). */ 74 #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. */ 75 #define IMAGE_REL_ARM64_SECREL_LOW12A 0x0009 /* Bit 0:11 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift. */ 76 #define IMAGE_REL_ARM64_SECREL_HIGH12A 0x000A /* Bit 12:23 of section offset of the target, for instructions ADD/ADDS (immediate) with zero shift. */ 77 #define IMAGE_REL_ARM64_SECREL_LOW12L 0x000B /* Bit 0:11 of section offset of the target, for instruction LDR (indexed, unsigned immediate). */ 78 #define IMAGE_REL_ARM64_TOKEN 0x000C /* CLR token */ 79 #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. */ 80 #define IMAGE_REL_ARM64_ADDR64 0x000E /* The 64-bit VA of the relocation target. */ 81 #define IMAGE_REL_ARM64_BRANCH19 0x000F /* 19 bit offset << 2 & sign ext. for conditional B */ 82 #define IMAGE_REL_ARM64_BRANCH14 0x0010 /* The 14-bit offset to the relocation target, for instructions TBZ and TBNZ. */ 83 #define IMAGE_REL_ARM64_REL32 0x0011 /* The 32-bit relative address from the byte following the relocation. */ 84 85 #define ARM_NOTE_SECTION ".note" 86