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elfcpp/arm.h
390 строк
13 KB
Sivan Shani
gas, bfd, gold: Rename Arm v8/v9 architecture tags
28 май 2026, 14:33
28 май 2026, 14:33
ef92848
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// arm.h -- ELF definitions specific to EM_ARM -*- C++ -*- // Copyright (C) 2009-2026 Free Software Foundation, Inc. // Written by Doug Kwan <dougkwan@google.com>. // This file is part of elfcpp. // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public License // as published by the Free Software Foundation; either version 2, or // (at your option) any later version. // In addition to the permissions in the GNU Library General Public // License, the Free Software Foundation gives you unlimited // permission to link the compiled version of this file into // combinations with other programs, and to distribute those // combinations without any restriction coming from the use of this // file. (The Library Public License restrictions do apply in other // respects; for example, they cover modification of the file, and // distribution when not linked into a combined executable.) // This program 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 // Library General Public License for more details. // You should have received a copy of the GNU Library General Public // License along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA // 02110-1301, USA. #ifndef ELFCPP_ARM_H #define ELFCPP_ARM_H // The relocation type information is taken from: // // ELF for the ARM Architecture // Document number: ARM IHI 0044C, current through ABI release 2.07 // Date of Issue: 10th October, 2008 // namespace elfcpp { // // ARM Relocations Codes // // Operation notes: // S: Address of the symbol. // A: Addend for relocation. // P: Address of the place being relocated. // Pa: Adjusted address of the place being relocated (P & 0xfffffffc) // T: is 1 if S has type STT_FUNC and the symbol addresses a Thumb // instruction.Thumb-bit; it is 0 otherwise. // B(S): Addressing origin of the output segment defining S. // GOT_ORG: Addressing origin of the Global Offset Table. // GOT(S): Address of the GOT entry for S. // enum { // Type Class Operation // ------------------------------ R_ARM_NONE = 0, // Static Misc R_ARM_PC24 = 1, // Deprecated ARM ((S + A) | T) - P R_ARM_ABS32 = 2, // Static Data (S + A) | T R_ARM_REL32 = 3, // Static Data ((S + A) | T) - P R_ARM_LDR_PC_G0 = 4, // Static ARM S + A - P R_ARM_ABS16 = 5, // Static Data S + A R_ARM_ABS12 = 6, // Static ARM S + A R_ARM_THM_ABS5 = 7, // Static Thumb16 S + A R_ARM_ABS8 = 8, // Static Data S + A R_ARM_SBREL32 = 9, // Static Data ((S + A) | T) - B(S) R_ARM_THM_CALL = 10, // Static Thumb32 ((S + A) | T) - P R_ARM_THM_PC8 = 11, // Static Thumb16 R_ARM_BREL_ADJ = 12, // Dynamic Data DeltaB(S) + A R_ARM_TLS_DESC = 13, // Dynamic Data R_ARM_THM_SWI8 = 14, // Obsolete R_ARM_XPC25 = 15, // Obsolete R_ARM_THM_XPC22 = 16, // Obsolete R_ARM_TLS_DTPMOD32 = 17, // Dynamic Data Module(S) R_ARM_TLS_DTPOFF32 = 18, // Dynamic Data S + A - TLS R_ARM_TLS_TPOFF32 = 19, // Dynamic Data S + A - tp R_ARM_COPY = 20, // Dynamic Misc R_ARM_GLOB_DAT = 21, // Dynamic Data (S + A) | T R_ARM_JUMP_SLOT = 22, // Dynamic Data (S + A) | T R_ARM_RELATIVE = 23, // Dynamic Data B(S) + A R_ARM_GOTOFF32 = 24, // Static Data (((S + A) | T) - GOT_ORG R_ARM_BASE_PREL = 25, // Static Data B(S) + A - P R_ARM_GOT_BREL = 26, // Static Data GOT(S) + A - GOT_ORG R_ARM_PLT32 = 27, // Deprecated ARM ((S + A) | T) - P R_ARM_CALL = 28, // Static ARM ((S + A) | T) - P R_ARM_JUMP24 = 29, // Static ARM ((S + A) | T) - P R_ARM_THM_JUMP24 = 30, // Static Thumb32 ((S + A) | T) - P R_ARM_BASE_ABS = 31, // Static Data B(S) + A R_ARM_ALU_PCREL_7_0 = 32, // Obsolete R_ARM_ALU_PCREL_15_8 = 33, // Obsolete R_ARM_ALU_PCREL_23_15 = 34, // Obsolete R_ARM_LDR_SBREL_11_0_NC = 35, // Deprecated ARM S + A - B(S) R_ARM_ALU_SBREL_19_12_NC = 36,// Deprecated ARM S + A - B(S) R_ARM_ALU_SBREL_27_20_CK = 37,// Deprecated ARM S + A - B(S) R_ARM_TARGET1 = 38, // Data Misc (S + A) | T or // ((S + A) | T) - P R_ARM_SBREL31 = 39, // Deprecated Data ((S + A) | T) - B(S) R_ARM_V4BX = 40, // Static Misc R_ARM_TARGET2 = 41, // Static Misc R_ARM_PREL31 = 42, // Static Data ((S + A) | T) - P R_ARM_MOVW_ABS_NC = 43, // Static ARM (S + A) | T R_ARM_MOVT_ABS = 44, // Static ARM S + A R_ARM_MOVW_PREL_NC = 45, // Static ARM ((S + A) | T) - P R_ARM_MOVT_PREL = 46, // Static ARM S + A - P R_ARM_THM_MOVW_ABS_NC = 47, // Static Thumb32 (S + A) | T R_ARM_THM_MOVT_ABS = 48, // Static Thumb32 S + A - P R_ARM_THM_MOVW_PREL_NC = 49, // Static Thumb32 ((S + A) | T) - P R_ARM_THM_MOVT_PREL = 50, // Static Thumb32 S + A - P R_ARM_THM_JUMP19 = 51, // Static Thumb32 ((S + A) | T) - P R_ARM_THM_JUMP6 = 52, // Static Thumb16 S + A - P R_ARM_THM_ALU_PREL_11_0 = 53, // Static Thumb32 ((S + A) | T) - Pa R_ARM_THM_PC12 = 54, // Static Thumb32 S + A - Pa R_ARM_ABS32_NOI = 55, // Static Data S + A R_ARM_REL32_NOI = 56, // Static Data S + A - P R_ARM_ALU_PC_G0_NC = 57, // Static ARM ((S + A) | T) - P R_ARM_ALU_PC_G0 = 58, // Static ARM ((S + A) | T) - P R_ARM_ALU_PC_G1_NC = 59, // Static ARM ((S + A) | T) - P R_ARM_ALU_PC_G1 = 60, // Static ARM ((S + A) | T) - P R_ARM_ALU_PC_G2 = 61, // Static ARM ((S + A) | T) - P R_ARM_LDR_PC_G1 = 62, // Static ARM S + A - P R_ARM_LDR_PC_G2 = 63, // Static ARM S + A - P R_ARM_LDRS_PC_G0 = 64, // Static ARM S + A - P R_ARM_LDRS_PC_G1 = 65, // Static ARM S + A - P R_ARM_LDRS_PC_G2 = 66, // Static ARM S + A - P R_ARM_LDC_PC_G0 = 67, // Static ARM S + A - P R_ARM_LDC_PC_G1 = 68, // Static ARM S + A - P R_ARM_LDC_PC_G2 = 69, // Static ARM S + A - P R_ARM_ALU_SB_G0_NC = 70, // Static ARM ((S + A) | T) - B(S) R_ARM_ALU_SB_G0 = 71, // Static ARM ((S + A) | T) - B(S) R_ARM_ALU_SB_G1_NC = 72, // Static ARM ((S + A) | T) - B(S) R_ARM_ALU_SB_G1 = 73, // Static ARM ((S + A) | T) - B(S) R_ARM_ALU_SB_G2 = 74, // Static ARM ((S + A) | T) - B(S) R_ARM_LDR_SB_G0 = 75, // Static ARM S + A - B(S) R_ARM_LDR_SB_G1 = 76, // Static ARM S + A - B(S) R_ARM_LDR_SB_G2 = 77, // Static ARM S + A - B(S) R_ARM_LDRS_SB_G0 = 78, // Static ARM S + A - B(S) R_ARM_LDRS_SB_G1 = 79, // Static ARM S + A - B(S) R_ARM_LDRS_SB_G2 = 80, // Static ARM S + A - B(S) R_ARM_LDC_SB_G0 = 81, // Static ARM S + A - B(S) R_ARM_LDC_SB_G1 = 82, // Static ARM S + A - B(S) R_ARM_LDC_SB_G2 = 83, // Static ARM S + A - B(S) R_ARM_MOVW_BREL_NC = 84, // Static ARM ((S + A) | T) - B(S) R_ARM_MOVT_BREL = 85, // Static ARM S + A - B(S) R_ARM_MOVW_BREL = 86, // Static ARM ((S + A) | T) - B(S) R_ARM_THM_MOVW_BREL_NC = 87, // Static Thumb32 ((S + A) | T) - B(S) R_ARM_THM_MOVT_BREL = 88, // Static Thumb32 S + A - B(S) R_ARM_THM_MOVW_BREL = 89, // Static Thumb32 ((S + A) | T) - B(S) R_ARM_TLS_GOTDESC = 90, // Static Data R_ARM_TLS_CALL = 91, // Static ARM R_ARM_TLS_DESCSEQ = 92, // Static ARM TLS relaxation R_ARM_THM_TLS_CALL = 93, // Static Thumb32 R_ARM_PLT32_ABS = 94, // Static Data PLT(S) + A R_ARM_GOT_ABS = 95, // Static Data GOT(S) + A R_ARM_GOT_PREL = 96, // Static Data GOT(S) + A - P R_ARM_GOT_BREL12 = 97, // Static ARM GOT(S) + A - GOT_ORG R_ARM_GOTOFF12 = 98, // Static ARM S + A - GOT_ROG R_ARM_GOTRELAX = 99, // Static Misc R_ARM_GNU_VTENTRY = 100, // Deprecated Data R_ARM_GNU_VTINHERIT = 101, // Deprecated Data R_ARM_THM_JUMP11 = 102, // Static Thumb16 S + A - P R_ARM_THM_JUMP8 = 103, // Static Thumb16 S + A - P R_ARM_TLS_GD32 = 104, // Static Data GOT(S) + A - P R_ARM_TLS_LDM32 = 105, // Static Data GOT(S) + A - P R_ARM_TLS_LDO32 = 106, // Static Data S + A - TLS R_ARM_TLS_IE32 = 107, // Static Data GOT(S) + A - P R_ARM_TLS_LE32 = 108, // Static Data S + A - tp R_ARM_TLS_LDO12 = 109, // Static ARM S + A - TLS R_ARM_TLS_LE12 = 110, // Static ARM S + A - tp R_ARM_TLS_IE12GP = 111, // Static ARM GOT(S) + A - GOT_ORG R_ARM_PRIVATE_0 = 112, // Private (n = 0, 1, ... 15) R_ARM_PRIVATE_1 = 113, R_ARM_PRIVATE_2 = 114, R_ARM_PRIVATE_3 = 115, R_ARM_PRIVATE_4 = 116, R_ARM_PRIVATE_5 = 117, R_ARM_PRIVATE_6 = 118, R_ARM_PRIVATE_7 = 119, R_ARM_PRIVATE_8 = 120, R_ARM_PRIVATE_9 = 121, R_ARM_PRIVATE_10 = 122, R_ARM_PRIVATE_11 = 123, R_ARM_PRIVATE_12 = 124, R_ARM_PRIVATE_13 = 125, R_ARM_PRIVATE_14 = 126, R_ARM_PRIVATE_15 = 127, R_ARM_ME_TOO = 128, // Obsolete R_ARM_THM_TLS_DESCSEQ16 = 129,// Static Thumb16 R_ARM_THM_TLS_DESCSEQ32 = 130,// Static Thumb32 // 131 - 135 Unallocated // Relocations for Armv8.1-M Mainline (BF/BFL) R_ARM_THM_BF16 = 136, // Static Thumb32 ((S + A) | T) – P R_ARM_THM_BF12 = 137, // Static Thumb32 ((S + A) | T) – P R_ARM_THM_BF18 = 138, // Static Thumb32 ((S + A) | T) – P // 139 Unallocated // 140 - 159 Dynamic Reserved for future allocation R_ARM_IRELATIVE = 160, // Dynamic // 161 - 255 Unallocated }; // e_flags values used for ARM. We only support flags defined in AAELF. enum { EF_ARM_BE8 = 0x00800000, // Mask to extract EABI version, not really a flag value. EF_ARM_EABIMASK = 0xFF000000, EF_ARM_EABI_UNKNOWN = 0x00000000, EF_ARM_EABI_VER1 = 0x01000000, EF_ARM_EABI_VER2 = 0x02000000, EF_ARM_EABI_VER3 = 0x03000000, EF_ARM_EABI_VER4 = 0x04000000, EF_ARM_EABI_VER5 = 0x05000000, }; // Extract EABI version from flags. inline Elf_Word arm_eabi_version(Elf_Word flags) { return flags & EF_ARM_EABIMASK; } // EABI_VER5 e_flags values for identifying soft- and hard-float ABI // choice. enum { EF_ARM_ABI_FLOAT_SOFT = 0x200, EF_ARM_ABI_FLOAT_HARD = 0x400, }; // Values for the Tag_CPU_arch EABI attribute. enum { TAG_CPU_ARCH_PRE_V4, TAG_CPU_ARCH_V4, TAG_CPU_ARCH_V4T, TAG_CPU_ARCH_V5T, TAG_CPU_ARCH_V5TE, TAG_CPU_ARCH_V5TEJ, TAG_CPU_ARCH_V6, TAG_CPU_ARCH_V6KZ, TAG_CPU_ARCH_V6T2, TAG_CPU_ARCH_V6K, TAG_CPU_ARCH_V7, TAG_CPU_ARCH_V6_M, TAG_CPU_ARCH_V6S_M, TAG_CPU_ARCH_V7E_M, TAG_CPU_ARCH_V8A, TAG_CPU_ARCH_V8R, TAG_CPU_ARCH_V8M_BASE, TAG_CPU_ARCH_V8M_MAIN, TAG_CPU_ARCH_V8_1A, TAG_CPU_ARCH_V8_2A, TAG_CPU_ARCH_V8_3A, TAG_CPU_ARCH_V8_1M_MAIN, TAG_CPU_ARCH_V9A, MAX_TAG_CPU_ARCH = TAG_CPU_ARCH_V9A, // Pseudo-architecture to allow objects to be compatible with the subset of // armv4t and armv6-m. This value should never be stored in object files. TAG_CPU_ARCH_V4T_PLUS_V6_M = (MAX_TAG_CPU_ARCH + 1) }; // EABI object attributes. enum { // 0-3 are generic. Tag_CPU_raw_name = 4, Tag_CPU_name = 5, Tag_CPU_arch = 6, Tag_CPU_arch_profile = 7, Tag_ARM_ISA_use = 8, Tag_THUMB_ISA_use = 9, Tag_FP_arch = 10, Tag_WMMX_arch = 11, Tag_Advanced_SIMD_arch = 12, Tag_PCS_config = 13, Tag_ABI_PCS_R9_use = 14, Tag_ABI_PCS_RW_data = 15, Tag_ABI_PCS_RO_data = 16, Tag_ABI_PCS_GOT_use = 17, Tag_ABI_PCS_wchar_t = 18, Tag_ABI_FP_rounding = 19, Tag_ABI_FP_denormal = 20, Tag_ABI_FP_exceptions = 21, Tag_ABI_FP_user_exceptions = 22, Tag_ABI_FP_number_model = 23, Tag_ABI_align_needed = 24, Tag_ABI_align_preserved = 25, Tag_ABI_enum_size = 26, Tag_ABI_HardFP_use = 27, Tag_ABI_VFP_args = 28, Tag_ABI_WMMX_args = 29, Tag_ABI_optimization_goals = 30, Tag_ABI_FP_optimization_goals = 31, // 32 is generic (Tag_compatibility). Tag_undefined33 = 33, Tag_CPU_unaligned_access = 34, Tag_undefined35 = 35, Tag_FP_HP_extension = 36, Tag_undefined37 = 37, Tag_ABI_FP_16bit_format = 38, Tag_undefined39 = 39, Tag_undefined40 = 40, Tag_undefined41 = 41, Tag_MPextension_use = 42, Tag_undefined43 = 43, Tag_DIV_use = 44, Tag_MVE_arch = 48, Tag_PAC_extension = 50, Tag_BTI_extension = 52, Tag_BTI_use = 74, Tag_PACRET_use = 76, Tag_nodefaults = 64, Tag_also_compatible_with = 65, Tag_T2EE_use = 66, Tag_conformance = 67, Tag_Virtualization_use = 68, Tag_undefined69 = 69, Tag_MPextension_use_legacy = 70, // The following tags are legacy names for other tags. Tag_VFP_arch = Tag_FP_arch, Tag_ABI_align8_needed = Tag_ABI_align_needed, Tag_ABI_align8_preserved = Tag_ABI_align_preserved, Tag_VFP_HP_extension = Tag_FP_HP_extension }; // Values for Tag_ABI_PCS_R9_use. enum { AEABI_R9_V6 = 0, AEABI_R9_SB = 1, AEABI_R9_TLS = 2, AEABI_R9_unused = 3 }; // Values for Tag_ABI_PCS_RW_data. enum { AEABI_PCS_RW_data_absolute = 0, AEABI_PCS_RW_data_PCrel = 1, AEABI_PCS_RW_data_SBrel = 2, AEABI_PCS_RW_data_unused = 3 }; // Values for Tag_ABI_enum_size. enum { AEABI_enum_unused = 0, AEABI_enum_short = 1, AEABI_enum_wide = 2, AEABI_enum_forced_wide = 3 }; // Values for Tag_ABI_FP_number_model. enum { AEABI_FP_number_model_none = 0, AEABI_FP_number_model_ieee754_number = 1, AEABI_FP_number_model_rtabi = 2, AEABI_FP_number_model_ieee754_all = 3 }; // Values for Tag_ABI_VFP_args. enum { AEABI_VFP_args_base = 0, AEABI_VFP_args_vfp = 1, AEABI_VFP_args_toolchain = 2, AEABI_VFP_args_compatible = 3 }; // For Exception Index Table. (Exception handling ABI for the ARM // architectue, Section 5) enum { EXIDX_CANTUNWIND = 1, }; } // End namespace elfcpp. #endif // !defined(ELFCPP_ARM_H)