| 1 | /* ARM ELF support for BFD.
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| 2 | Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of BFD, the Binary File Descriptor library.
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software Foundation,
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| 18 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 19 |
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| 20 | #ifndef _ELF_ARM_H
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| 21 | #define _ELF_ARM_H
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| 22 |
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| 23 | #include "elf/reloc-macros.h"
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| 24 |
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| 25 | /* Processor specific flags for the ELF header e_flags field. */
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| 26 | #define EF_ARM_RELEXEC 0x01
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| 27 | #define EF_ARM_HASENTRY 0x02
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| 28 | #define EF_ARM_INTERWORK 0x04
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| 29 | #define EF_ARM_APCS_26 0x08
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| 30 | #define EF_ARM_APCS_FLOAT 0x10
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| 31 | #define EF_ARM_PIC 0x20
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| 32 | #define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */
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| 33 | #define EF_ARM_NEW_ABI 0x80
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| 34 | #define EF_ARM_OLD_ABI 0x100
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| 35 | #define EF_ARM_SOFT_FLOAT 0x200
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| 36 | #define EF_ARM_VFP_FLOAT 0x400
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| 37 | #define EF_ARM_MAVERICK_FLOAT 0x800
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| 38 |
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| 39 | /* Other constants defined in the ARM ELF spec. version B-01. */
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| 40 | #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */
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| 41 | #define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */
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| 42 | #define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */
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| 43 | #define EF_ARM_EABIMASK 0xFF000000
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| 44 |
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| 45 | #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
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| 46 | #define EF_ARM_EABI_UNKNOWN 0x00000000
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| 47 | #define EF_ARM_EABI_VER1 0x01000000
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| 48 | #define EF_ARM_EABI_VER2 0x02000000
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| 49 |
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| 50 | /* Local aliases for some flags to match names used by COFF port. */
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| 51 | #define F_INTERWORK EF_ARM_INTERWORK
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| 52 | #define F_APCS26 EF_ARM_APCS_26
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| 53 | #define F_APCS_FLOAT EF_ARM_APCS_FLOAT
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| 54 | #define F_PIC EF_ARM_PIC
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| 55 | #define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT
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| 56 | #define F_VFP_FLOAT EF_ARM_VFP_FLOAT
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| 57 |
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| 58 | /* Additional symbol types for Thumb. */
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| 59 | #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */
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| 60 | #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */
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| 61 |
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| 62 | /* ARM-specific values for sh_flags. */
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| 63 | #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */
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| 64 | #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */
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| 65 |
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| 66 | /* ARM-specific program header flags. */
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| 67 | #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */
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| 68 | #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */
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| 69 | #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */
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| 70 |
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| 71 | /* Relocation types. */
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| 72 |
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| 73 | START_RELOC_NUMBERS (elf_arm_reloc_type)
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| 74 | RELOC_NUMBER (R_ARM_NONE, 0)
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| 75 | RELOC_NUMBER (R_ARM_PC24, 1)
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| 76 | RELOC_NUMBER (R_ARM_ABS32, 2)
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| 77 | RELOC_NUMBER (R_ARM_REL32, 3)
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| 78 | #ifdef OLD_ARM_ABI
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| 79 | RELOC_NUMBER (R_ARM_ABS8, 4)
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| 80 | RELOC_NUMBER (R_ARM_ABS16, 5)
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| 81 | RELOC_NUMBER (R_ARM_ABS12, 6)
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| 82 | RELOC_NUMBER (R_ARM_THM_ABS5, 7)
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| 83 | RELOC_NUMBER (R_ARM_THM_PC22, 8)
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| 84 | RELOC_NUMBER (R_ARM_SBREL32, 9)
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| 85 | RELOC_NUMBER (R_ARM_AMP_VCALL9, 10)
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| 86 | RELOC_NUMBER (R_ARM_THM_PC11, 11) /* Cygnus extension to abi: Thumb unconditional branch. */
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| 87 | RELOC_NUMBER (R_ARM_THM_PC9, 12) /* Cygnus extension to abi: Thumb conditional branch. */
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| 88 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 13)
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| 89 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 14)
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| 90 | #else /* not OLD_ARM_ABI */
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| 91 | RELOC_NUMBER (R_ARM_PC13, 4)
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| 92 | RELOC_NUMBER (R_ARM_ABS16, 5)
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| 93 | RELOC_NUMBER (R_ARM_ABS12, 6)
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| 94 | RELOC_NUMBER (R_ARM_THM_ABS5, 7)
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| 95 | RELOC_NUMBER (R_ARM_ABS8, 8)
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| 96 | RELOC_NUMBER (R_ARM_SBREL32, 9)
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| 97 | RELOC_NUMBER (R_ARM_THM_PC22, 10)
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| 98 | RELOC_NUMBER (R_ARM_THM_PC8, 11)
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| 99 | RELOC_NUMBER (R_ARM_AMP_VCALL9, 12)
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| 100 | RELOC_NUMBER (R_ARM_SWI24, 13)
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| 101 | RELOC_NUMBER (R_ARM_THM_SWI8, 14)
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| 102 | RELOC_NUMBER (R_ARM_XPC25, 15)
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| 103 | RELOC_NUMBER (R_ARM_THM_XPC22, 16)
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| 104 | #endif /* not OLD_ARM_ABI */
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| 105 | RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */
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| 106 | RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */
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| 107 | RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */
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| 108 | RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */
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| 109 | RELOC_NUMBER (R_ARM_GOTOFF, 24) /* 32 bit offset to GOT. */
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| 110 | RELOC_NUMBER (R_ARM_GOTPC, 25) /* 32 bit PC relative offset to GOT. */
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| 111 | RELOC_NUMBER (R_ARM_GOT32, 26) /* 32 bit GOT entry. */
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| 112 | RELOC_NUMBER (R_ARM_PLT32, 27) /* 32 bit PLT address. */
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| 113 | #ifdef OLD_ARM_ABI
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| 114 | FAKE_RELOC (FIRST_INVALID_RELOC, 28)
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| 115 | FAKE_RELOC (LAST_INVALID_RELOC, 249)
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| 116 | #else /* not OLD_ARM_ABI */
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| 117 | FAKE_RELOC (FIRST_INVALID_RELOC1, 28)
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| 118 | FAKE_RELOC (LAST_INVALID_RELOC1, 31)
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| 119 | RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32)
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| 120 | RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33)
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| 121 | RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34)
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| 122 | RELOC_NUMBER (R_ARM_LDR_SBREL11_0, 35)
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| 123 | RELOC_NUMBER (R_ARM_ALU_SBREL19_12, 36)
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| 124 | RELOC_NUMBER (R_ARM_ALU_SBREL27_20, 37)
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| 125 | FAKE_RELOC (FIRST_INVALID_RELOC2, 38)
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| 126 | FAKE_RELOC (LAST_INVALID_RELOC2, 99)
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| 127 | RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100)
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| 128 | RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101)
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| 129 | RELOC_NUMBER (R_ARM_THM_PC11, 102) /* Cygnus extension to abi: Thumb unconditional branch. */
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| 130 | RELOC_NUMBER (R_ARM_THM_PC9, 103) /* Cygnus extension to abi: Thumb conditional branch. */
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| 131 | FAKE_RELOC (FIRST_INVALID_RELOC3, 104)
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| 132 | FAKE_RELOC (LAST_INVALID_RELOC3, 248)
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| 133 | RELOC_NUMBER (R_ARM_RXPC25, 249)
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| 134 | #endif /* not OLD_ARM_ABI */
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| 135 | RELOC_NUMBER (R_ARM_RSBREL32, 250)
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| 136 | RELOC_NUMBER (R_ARM_THM_RPC22, 251)
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| 137 | RELOC_NUMBER (R_ARM_RREL32, 252)
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| 138 | RELOC_NUMBER (R_ARM_RABS32, 253)
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| 139 | RELOC_NUMBER (R_ARM_RPC24, 254)
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| 140 | RELOC_NUMBER (R_ARM_RBASE, 255)
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| 141 | END_RELOC_NUMBERS (R_ARM_max)
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| 142 |
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| 143 | /* The name of the note section used to identify arm variants. */
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| 144 | #define ARM_NOTE_SECTION ".note.gnu.arm.ident"
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| 145 |
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| 146 | #endif /* _ELF_ARM_H */
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