X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=include%2Felf%2Farm.h;h=7d8c1ec20ae3c1635bda2b320b9b61e7f5522834;hb=5f8989944880cad1bfffab3801214a0a9b67b72e;hp=8311c131c99c08cd282a4b2bb18e8c57cdbb420d;hpb=3a4a14e9ea1af8d2e5f0d54452be81ccc19c9a1a;p=deliverable%2Fbinutils-gdb.git diff --git a/include/elf/arm.h b/include/elf/arm.h index 8311c131c9..7d8c1ec20a 100644 --- a/include/elf/arm.h +++ b/include/elf/arm.h @@ -1,12 +1,11 @@ /* ARM ELF support for BFD. - Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 - Free Software Foundation, Inc. + Copyright (C) 1998-2020 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -24,8 +23,9 @@ #include "elf/reloc-macros.h" /* Processor specific flags for the ELF header e_flags field. */ + +/* Old ABI (ie GNU pre EABI). These are deprecated. */ #define EF_ARM_RELEXEC 0x01 -#define EF_ARM_HASENTRY 0x02 #define EF_ARM_INTERWORK 0x04 #define EF_ARM_APCS_26 0x08 #define EF_ARM_APCS_FLOAT 0x10 @@ -40,16 +40,21 @@ /* Frame unwind information */ #define PT_ARM_EXIDX (PT_LOPROC + 1) -/* Other constants defined in the ARM ELF spec. version B-01. */ -#define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ -#define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ -#define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ -#define EF_ARM_EABIMASK 0xFF000000 +/* Old ARM ELF spec. version B-01. Mostly deprecated. */ +#define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK. */ +#define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26. */ +#define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT. */ + +/* New constants defined in the ARM ELF spec. version XXX (AAELF). + Only valid in conjunction with EF_ARM_EABI_VER5. */ +#define EF_ARM_ABI_FLOAT_SOFT 0x200 /* NB conflicts with EF_ARM_SOFT_FLOAT. */ +#define EF_ARM_ABI_FLOAT_HARD 0x400 /* NB conflicts with EF_ARM_VFP_FLOAT. */ /* Constants defined in AAELF. */ #define EF_ARM_BE8 0x00800000 #define EF_ARM_LE8 0x00400000 +#define EF_ARM_EABIMASK 0xFF000000 #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK) #define EF_ARM_EABI_UNKNOWN 0x00000000 #define EF_ARM_EABI_VER1 0x01000000 @@ -71,12 +76,15 @@ #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */ /* Additional section types. */ -#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */ -#define SHT_ARM_PREEMPTMAP 0x70000002 /* Section pre-emption details. */ -#define SHT_ARM_ATTRIBUTES 0x70000003 /* Section holds attributes. */ +#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */ +#define SHT_ARM_PREEMPTMAP 0x70000002 /* Section pre-emption details. */ +#define SHT_ARM_ATTRIBUTES 0x70000003 /* Section holds attributes. */ +#define SHT_ARM_DEBUGOVERLAY 0x70000004 /* Section holds overlay debug info. */ +#define SHT_ARM_OVERLAYSECTION 0x70000005 /* Section holds GDB and overlay integration info. */ /* ARM-specific values for sh_flags. */ #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ +#define SHF_ARM_PURECODE 0x20000000 /* Section contains only code and no data. */ #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ /* ARM-specific program header flags. */ @@ -84,6 +92,31 @@ #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ +/* Values for the Tag_CPU_arch EABI attribute. */ +#define TAG_CPU_ARCH_PRE_V4 0 +#define TAG_CPU_ARCH_V4 1 +#define TAG_CPU_ARCH_V4T 2 +#define TAG_CPU_ARCH_V5T 3 +#define TAG_CPU_ARCH_V5TE 4 +#define TAG_CPU_ARCH_V5TEJ 5 +#define TAG_CPU_ARCH_V6 6 +#define TAG_CPU_ARCH_V6KZ 7 +#define TAG_CPU_ARCH_V6T2 8 +#define TAG_CPU_ARCH_V6K 9 +#define TAG_CPU_ARCH_V7 10 +#define TAG_CPU_ARCH_V6_M 11 +#define TAG_CPU_ARCH_V6S_M 12 +#define TAG_CPU_ARCH_V7E_M 13 +#define TAG_CPU_ARCH_V8 14 +#define TAG_CPU_ARCH_V8R 15 +#define TAG_CPU_ARCH_V8M_BASE 16 +#define TAG_CPU_ARCH_V8M_MAIN 17 +#define TAG_CPU_ARCH_V8_1M_MAIN 21 +#define MAX_TAG_CPU_ARCH TAG_CPU_ARCH_V8_1M_MAIN +/* 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. */ +#define TAG_CPU_ARCH_V4T_PLUS_V6_M (MAX_TAG_CPU_ARCH + 1) + /* Relocation types. */ START_RELOC_NUMBERS (elf_arm_reloc_type) @@ -101,7 +134,7 @@ START_RELOC_NUMBERS (elf_arm_reloc_type) RELOC_NUMBER (R_ARM_THM_CALL, 10) RELOC_NUMBER (R_ARM_THM_PC8, 11) RELOC_NUMBER (R_ARM_BREL_ADJ, 12) - RELOC_NUMBER (R_ARM_SWI24, 13) /* obsolete */ + RELOC_NUMBER (R_ARM_TLS_DESC, 13) RELOC_NUMBER (R_ARM_THM_SWI8, 14) /* obsolete */ RELOC_NUMBER (R_ARM_XPC25, 15) /* obsolete */ RELOC_NUMBER (R_ARM_THM_XPC22, 16) /* obsolete */ @@ -169,16 +202,19 @@ START_RELOC_NUMBERS (elf_arm_reloc_type) RELOC_NUMBER (R_ARM_LDRS_SB_G0, 78) RELOC_NUMBER (R_ARM_LDRS_SB_G1, 79) RELOC_NUMBER (R_ARM_LDRS_SB_G2, 80) - RELOC_NUMBER (R_ARM_LDC_G0, 81) - RELOC_NUMBER (R_ARM_LDC_G1, 82) - RELOC_NUMBER (R_ARM_LDC_G2, 83) + RELOC_NUMBER (R_ARM_LDC_SB_G0, 81) + RELOC_NUMBER (R_ARM_LDC_SB_G1, 82) + RELOC_NUMBER (R_ARM_LDC_SB_G2, 83) RELOC_NUMBER (R_ARM_MOVW_BREL_NC, 84) RELOC_NUMBER (R_ARM_MOVT_BREL, 85) RELOC_NUMBER (R_ARM_MOVW_BREL, 86) RELOC_NUMBER (R_ARM_THM_MOVW_BREL_NC, 87) RELOC_NUMBER (R_ARM_THM_MOVT_BREL, 88) RELOC_NUMBER (R_ARM_THM_MOVW_BREL, 89) - /* 90-93 unallocated */ + RELOC_NUMBER (R_ARM_TLS_GOTDESC, 90) + RELOC_NUMBER (R_ARM_TLS_CALL, 91) + RELOC_NUMBER (R_ARM_TLS_DESCSEQ, 92) + RELOC_NUMBER (R_ARM_THM_TLS_CALL, 93) RELOC_NUMBER (R_ARM_PLT32_ABS, 94) RELOC_NUMBER (R_ARM_GOT_ABS, 95) RELOC_NUMBER (R_ARM_GOT_PREL, 96) @@ -199,6 +235,24 @@ START_RELOC_NUMBERS (elf_arm_reloc_type) RELOC_NUMBER (R_ARM_TLS_IE12GP, 111) /* 112 - 127 private range */ RELOC_NUMBER (R_ARM_ME_TOO, 128) /* obsolete */ + RELOC_NUMBER (R_ARM_THM_TLS_DESCSEQ ,129) + + RELOC_NUMBER (R_ARM_THM_ALU_ABS_G0_NC,132) + RELOC_NUMBER (R_ARM_THM_ALU_ABS_G1_NC,133) + RELOC_NUMBER (R_ARM_THM_ALU_ABS_G2_NC,134) + RELOC_NUMBER (R_ARM_THM_ALU_ABS_G3_NC,135) + RELOC_NUMBER (R_ARM_THM_BF16, 136) + RELOC_NUMBER (R_ARM_THM_BF12, 137) + RELOC_NUMBER (R_ARM_THM_BF18, 138) + + RELOC_NUMBER (R_ARM_IRELATIVE, 160) + RELOC_NUMBER (R_ARM_GOTFUNCDESC, 161) + RELOC_NUMBER (R_ARM_GOTOFFFUNCDESC, 162) + RELOC_NUMBER (R_ARM_FUNCDESC, 163) + RELOC_NUMBER (R_ARM_FUNCDESC_VALUE, 164) + RELOC_NUMBER (R_ARM_TLS_GD32_FDPIC, 165) + RELOC_NUMBER (R_ARM_TLS_LDM32_FDPIC, 166) + RELOC_NUMBER (R_ARM_TLS_IE32_FDPIC, 167) /* Extensions? R=read-only? */ RELOC_NUMBER (R_ARM_RXPC25, 249) @@ -221,34 +275,24 @@ START_RELOC_NUMBERS (elf_arm_reloc_type) FAKE_RELOC (R_ARM_GOT32, R_ARM_GOT_BREL) /* 32 bit GOT entry. */ FAKE_RELOC (R_ARM_ROSEGREL32, R_ARM_SBREL31) /* ??? */ FAKE_RELOC (R_ARM_AMP_VCALL9, R_ARM_BREL_ADJ) /* Thumb-something. Not used. */ - FAKE_RELOC (R_ARM_PC13, R_ARM_LDR_PC_G0) /* Unclear whether meaning is different. */ -END_RELOC_NUMBERS (R_ARM_max) -#ifdef BFD_ARCH_SIZE -/* Routines for manipulating EABI object attributes. */ -void elf32_arm_add_eabi_attr_int (bfd *, int, unsigned int); -void elf32_arm_add_eabi_attr_string (bfd *, int, const char *); -void elf32_arm_add_eabi_attr_compat (bfd *, unsigned int, const char *); -int elf32_arm_get_eabi_attr_int (bfd *, int); +END_RELOC_NUMBERS (R_ARM_max = 256) -void elf32_arm_set_eabi_attr_contents (bfd *, bfd_byte *, bfd_vma); -bfd_vma elf32_arm_eabi_attr_size (bfd *); +#ifdef BFD_ARCH_SIZE +/* EABI object attributes. */ enum { - Tag_NULL, - Tag_File, - Tag_Section, - Tag_Symbol, - Tag_CPU_raw_name, + /* 0-3 are generic. */ + Tag_CPU_raw_name = 4, Tag_CPU_name, Tag_CPU_arch, Tag_CPU_arch_profile, Tag_ARM_ISA_use, Tag_THUMB_ISA_use, - Tag_VFP_arch, + Tag_FP_arch, Tag_WMMX_arch, - Tag_NEON_arch, + Tag_Advanced_SIMD_arch, Tag_PCS_config, Tag_ABI_PCS_R9_use, Tag_ABI_PCS_RW_data, @@ -260,17 +304,61 @@ enum Tag_ABI_FP_exceptions, Tag_ABI_FP_user_exceptions, Tag_ABI_FP_number_model, - Tag_ABI_align8_needed, - Tag_ABI_align8_preserved, + Tag_ABI_align_needed, + Tag_ABI_align_preserved, Tag_ABI_enum_size, Tag_ABI_HardFP_use, Tag_ABI_VFP_args, Tag_ABI_WMMX_args, Tag_ABI_optimization_goals, Tag_ABI_FP_optimization_goals, - Tag_compatibility, + /* 32 is generic (Tag_compatibility). */ + Tag_undefined33 = 33, + Tag_CPU_unaligned_access, + Tag_undefined35, + Tag_FP_HP_extension, + Tag_undefined37, + Tag_ABI_FP_16bit_format, + Tag_undefined39, + Tag_undefined40, + Tag_undefined41, + Tag_MPextension_use, + Tag_undefined_43, + Tag_DIV_use, + Tag_DSP_extension = 46, + Tag_MVE_arch = 48, + Tag_nodefaults = 64, + Tag_also_compatible_with, + Tag_T2EE_use, + Tag_conformance, + Tag_Virtualization_use, + Tag_undefined69, + Tag_MPextension_use_legacy, + + /* 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_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 +}; #endif /* The name of the note section used to identify arm variants. */ @@ -282,4 +370,33 @@ enum #define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx." #define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab." +enum arm_st_branch_type { + ST_BRANCH_TO_ARM, + ST_BRANCH_TO_THUMB, + ST_BRANCH_LONG, + ST_BRANCH_UNKNOWN, + ST_BRANCH_ENUM_SIZE +}; + +#define NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS 2 +#define ENUM_ARM_ST_BRANCH_TYPE_BITMASK \ + ((1 << NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS) - 1) + +#define ARM_GET_SYM_BRANCH_TYPE(STI) \ + ((enum arm_st_branch_type) ((STI) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK)) +#ifdef BFD_ASSERT +#define ARM_SET_SYM_BRANCH_TYPE(STI, TYPE) \ + do { \ + BFD_ASSERT (TYPE <= ST_BRANCH_ENUM_SIZE); \ + BFD_ASSERT ((1 << NUM_ENUM_ARM_ST_BRANCH_TYPE_BITS) \ + >= ST_BRANCH_ENUM_SIZE); \ + (STI) = (((STI) & ~ENUM_ARM_ST_BRANCH_TYPE_BITMASK) \ + | ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK)); \ + } while (0) +#else +#define ARM_SET_SYM_BRANCH_TYPE(STI, TYPE) \ + (STI) = (((STI) & ~ENUM_ARM_ST_BRANCH_TYPE_BITMASK) \ + | ((TYPE) & ENUM_ARM_ST_BRANCH_TYPE_BITMASK)) +#endif + #endif /* _ELF_ARM_H */