1 /* ARM ELF support for BFD. 2 Copyright 1998, 1999, 2000, 2001, 2002 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20 #ifndef _ELF_ARM_H 21 #define _ELF_ARM_H 22 23 #include "elf/reloc-macros.h" 24 25 /* Processor specific flags for the ELF header e_flags field. */ 26 #define EF_ARM_RELEXEC 0x01 27 #define EF_ARM_HASENTRY 0x02 28 #define EF_ARM_INTERWORK 0x04 29 #define EF_ARM_APCS_26 0x08 30 #define EF_ARM_APCS_FLOAT 0x10 31 #define EF_ARM_PIC 0x20 32 #define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */ 33 #define EF_ARM_NEW_ABI 0x80 34 #define EF_ARM_OLD_ABI 0x100 35 #define EF_ARM_SOFT_FLOAT 0x200 36 #define EF_ARM_VFP_FLOAT 0x400 37 #define EF_ARM_MAVERICK_FLOAT 0x800 38 39 /* Other constants defined in the ARM ELF spec. version B-01. */ 40 #define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ 41 #define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ 42 #define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ 43 #define EF_ARM_EABIMASK 0xFF000000 44 45 #define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK) 46 #define EF_ARM_EABI_UNKNOWN 0x00000000 47 #define EF_ARM_EABI_VER1 0x01000000 48 #define EF_ARM_EABI_VER2 0x02000000 49 50 /* Local aliases for some flags to match names used by COFF port. */ 51 #define F_INTERWORK EF_ARM_INTERWORK 52 #define F_APCS26 EF_ARM_APCS_26 53 #define F_APCS_FLOAT EF_ARM_APCS_FLOAT 54 #define F_PIC EF_ARM_PIC 55 #define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT 56 #define F_VFP_FLOAT EF_ARM_VFP_FLOAT 57 58 /* Additional symbol types for Thumb. */ 59 #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */ 60 #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */ 61 62 /* ARM-specific values for sh_flags. */ 63 #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ 64 #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ 65 66 /* ARM-specific program header flags. */ 67 #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */ 68 #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ 69 #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ 70 71 /* Relocation types. */ 72 73 START_RELOC_NUMBERS (elf_arm_reloc_type) 74 RELOC_NUMBER (R_ARM_NONE, 0) 75 RELOC_NUMBER (R_ARM_PC24, 1) 76 RELOC_NUMBER (R_ARM_ABS32, 2) 77 RELOC_NUMBER (R_ARM_REL32, 3) 78 #ifdef OLD_ARM_ABI 79 RELOC_NUMBER (R_ARM_ABS8, 4) 80 RELOC_NUMBER (R_ARM_ABS16, 5) 81 RELOC_NUMBER (R_ARM_ABS12, 6) 82 RELOC_NUMBER (R_ARM_THM_ABS5, 7) 83 RELOC_NUMBER (R_ARM_THM_PC22, 8) 84 RELOC_NUMBER (R_ARM_SBREL32, 9) 85 RELOC_NUMBER (R_ARM_AMP_VCALL9, 10) 86 RELOC_NUMBER (R_ARM_THM_PC11, 11) /* Cygnus extension to abi: Thumb unconditional branch. */ 87 RELOC_NUMBER (R_ARM_THM_PC9, 12) /* Cygnus extension to abi: Thumb conditional branch. */ 88 RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 13) 89 RELOC_NUMBER (R_ARM_GNU_VTENTRY, 14) 90 #else /* not OLD_ARM_ABI */ 91 RELOC_NUMBER (R_ARM_PC13, 4) 92 RELOC_NUMBER (R_ARM_ABS16, 5) 93 RELOC_NUMBER (R_ARM_ABS12, 6) 94 RELOC_NUMBER (R_ARM_THM_ABS5, 7) 95 RELOC_NUMBER (R_ARM_ABS8, 8) 96 RELOC_NUMBER (R_ARM_SBREL32, 9) 97 RELOC_NUMBER (R_ARM_THM_PC22, 10) 98 RELOC_NUMBER (R_ARM_THM_PC8, 11) 99 RELOC_NUMBER (R_ARM_AMP_VCALL9, 12) 100 RELOC_NUMBER (R_ARM_SWI24, 13) 101 RELOC_NUMBER (R_ARM_THM_SWI8, 14) 102 RELOC_NUMBER (R_ARM_XPC25, 15) 103 RELOC_NUMBER (R_ARM_THM_XPC22, 16) 104 #endif /* not OLD_ARM_ABI */ 105 RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */ 106 RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */ 107 RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */ 108 RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */ 109 RELOC_NUMBER (R_ARM_GOTOFF, 24) /* 32 bit offset to GOT. */ 110 RELOC_NUMBER (R_ARM_GOTPC, 25) /* 32 bit PC relative offset to GOT. */ 111 RELOC_NUMBER (R_ARM_GOT32, 26) /* 32 bit GOT entry. */ 112 RELOC_NUMBER (R_ARM_PLT32, 27) /* 32 bit PLT address. */ 113 #ifdef OLD_ARM_ABI 114 FAKE_RELOC (FIRST_INVALID_RELOC, 28) 115 FAKE_RELOC (LAST_INVALID_RELOC, 249) 116 #else /* not OLD_ARM_ABI */ 117 FAKE_RELOC (FIRST_INVALID_RELOC1, 28) 118 FAKE_RELOC (LAST_INVALID_RELOC1, 31) 119 RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) 120 RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) 121 RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) 122 RELOC_NUMBER (R_ARM_LDR_SBREL11_0, 35) 123 RELOC_NUMBER (R_ARM_ALU_SBREL19_12, 36) 124 RELOC_NUMBER (R_ARM_ALU_SBREL27_20, 37) 125 FAKE_RELOC (FIRST_INVALID_RELOC2, 38) 126 FAKE_RELOC (LAST_INVALID_RELOC2, 99) 127 RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) 128 RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) 129 RELOC_NUMBER (R_ARM_THM_PC11, 102) /* Cygnus extension to abi: Thumb unconditional branch. */ 130 RELOC_NUMBER (R_ARM_THM_PC9, 103) /* Cygnus extension to abi: Thumb conditional branch. */ 131 FAKE_RELOC (FIRST_INVALID_RELOC3, 104) 132 FAKE_RELOC (LAST_INVALID_RELOC3, 248) 133 RELOC_NUMBER (R_ARM_RXPC25, 249) 134 #endif /* not OLD_ARM_ABI */ 135 RELOC_NUMBER (R_ARM_RSBREL32, 250) 136 RELOC_NUMBER (R_ARM_THM_RPC22, 251) 137 RELOC_NUMBER (R_ARM_RREL32, 252) 138 RELOC_NUMBER (R_ARM_RABS32, 253) 139 RELOC_NUMBER (R_ARM_RPC24, 254) 140 RELOC_NUMBER (R_ARM_RBASE, 255) 141 END_RELOC_NUMBERS (R_ARM_max) 142 143 /* The name of the note section used to identify arm variants. */ 144 #define ARM_NOTE_SECTION ".note.gnu.arm.ident" 145 146 #endif /* _ELF_ARM_H */ 147