/*********************************************************************** * xflat/tools/arm/arch.h * ARM ELF support for BFD. * * Copyright (C) 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Derived from XFLAT: * * Copyright (c) 2006, Cadenux, LLC. All rights reserved. * Copyright (c) 2006, Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Which simply lifted it from the BFD: * * Copyright 1998, 1999, 2000, 2001, 2002 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 (at * your option) any later version. * * 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * ***********************************************************************/ #ifndef _ELF_ARM_H #define _ELF_ARM_H #include "reloc-macros.h" /* Processor specific flags for the ELF header e_flags field. */ #define EF_ARM_RELEXEC 0x01 #define EF_ARM_HASENTRY 0x02 #define EF_INTERWORK 0x04 #define EF_APCS_26 0x08 #define EF_APCS_FLOAT 0x10 #define EF_PIC 0x20 #define EF_ALIGN8 0x40 /* 8-bit structure alignment is in use */ #define EF_NEW_ABI 0x80 #define EF_OLD_ABI 0x100 #define EF_SOFT_FLOAT 0x200 #define EF_VFP_FLOAT 0x400 /* Other constants defined in the ARM ELF spec. version B-01. */ #define EF_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ #define EF_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ #define EF_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ #define EF_EABIMASK 0xFF000000 #define EF_EABI_VERSION(flags) ((flags) & EF_EABIMASK) #define EF_EABI_UNKNOWN 0x00000000 #define EF_EABI_VER1 0x01000000 #define EF_EABI_VER2 0x02000000 /* Local aliases for some flags to match names used by COFF port. */ #define F_INTERWORK EF_INTERWORK #define F_APCS26 EF_APCS_26 #define F_APCS_FLOAT EF_APCS_FLOAT #define F_PIC EF_PIC #define F_SOFT_FLOAT EF_SOFT_FLOAT #define F_VFP_FLOAT EF_VFP_FLOAT /* Additional symbol types for Thumb */ #define STT_ARM_TFUNC STT_LOPROC /* A Thumb function. */ #define STT_ARM_16BIT STT_HIPROC /* A Thumb label. */ /* ARM-specific values for sh_flags */ #define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ #define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ /* ARM-specific program header flags. */ #define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */ #define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ #define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ /* Relocation types. */ START_RELOC_NUMBERS (elf_arm_reloc_type) RELOC_NUMBER (R_ARM_NONE, 0) RELOC_NUMBER (R_ARM_PC24, 1) RELOC_NUMBER (R_ARM_ABS32, 2) RELOC_NUMBER (R_ARM_REL32, 3) #ifdef OLD_ARM_ABI RELOC_NUMBER (R_ARM_ABS8, 4) RELOC_NUMBER (R_ARM_ABS16, 5) RELOC_NUMBER (R_ARM_ABS12, 6) RELOC_NUMBER (R_ARM_THM_ABS5, 7) RELOC_NUMBER (R_ARM_THM_PC22, 8) RELOC_NUMBER (R_ARM_SBREL32, 9) RELOC_NUMBER (R_ARM_AMP_VCALL9, 10) RELOC_NUMBER (R_ARM_THM_PC11, 11) /* Cygnus extension to abi: Thumb unconditional branch. */ RELOC_NUMBER (R_ARM_THM_PC9, 12) /* Cygnus extension to abi: Thumb conditional branch. */ RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 13) RELOC_NUMBER (R_ARM_GNU_VTENTRY, 14) #else /* not OLD_ARM_ABI */ RELOC_NUMBER (R_ARM_PC13, 4) RELOC_NUMBER (R_ARM_ABS16, 5) RELOC_NUMBER (R_ARM_ABS12, 6) RELOC_NUMBER (R_ARM_THM_ABS5, 7) RELOC_NUMBER (R_ARM_ABS8, 8) RELOC_NUMBER (R_ARM_SBREL32, 9) RELOC_NUMBER (R_ARM_THM_PC22, 10) RELOC_NUMBER (R_ARM_THM_PC8, 11) RELOC_NUMBER (R_ARM_AMP_VCALL9, 12) RELOC_NUMBER (R_ARM_SWI24, 13) RELOC_NUMBER (R_ARM_THM_SWI8, 14) RELOC_NUMBER (R_ARM_XPC25, 15) RELOC_NUMBER (R_ARM_THM_XPC22, 16) #endif /* not OLD_ARM_ABI */ RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */ RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */ RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */ RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */ RELOC_NUMBER (R_ARM_GOTOFF, 24) /* 32 bit offset to GOT. */ RELOC_NUMBER (R_ARM_GOTPC, 25) /* 32 bit PC relative offset to GOT. */ RELOC_NUMBER (R_ARM_GOT32, 26) /* 32 bit GOT entry. */ RELOC_NUMBER (R_ARM_PLT32, 27) /* 32 bit PLT address. */ #ifdef OLD_ARM_ABI FAKE_RELOC (FIRST_INVALID_RELOC, 28) FAKE_RELOC (LAST_INVALID_RELOC, 249) #else /* not OLD_ARM_ABI */ FAKE_RELOC (FIRST_INVALID_RELOC1, 28) FAKE_RELOC (LAST_INVALID_RELOC1, 31) RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) RELOC_NUMBER (R_ARM_LDR_SBREL11_0, 35) RELOC_NUMBER (R_ARM_ALU_SBREL19_12, 36) RELOC_NUMBER (R_ARM_ALU_SBREL27_20, 37) FAKE_RELOC (FIRST_INVALID_RELOC2, 38) FAKE_RELOC (LAST_INVALID_RELOC2, 99) RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) RELOC_NUMBER (R_ARM_THM_PC11, 102) /* Cygnus extension to abi: Thumb unconditional branch. */ RELOC_NUMBER (R_ARM_THM_PC9, 103) /* Cygnus extension to abi: Thumb conditional branch. */ FAKE_RELOC (FIRST_INVALID_RELOC3, 104) FAKE_RELOC (LAST_INVALID_RELOC3, 248) RELOC_NUMBER (R_ARM_RXPC25, 249) #endif /* not OLD_ARM_ABI */ RELOC_NUMBER (R_ARM_RSBREL32, 250) RELOC_NUMBER (R_ARM_THM_RPC22, 251) RELOC_NUMBER (R_ARM_RREL32, 252) RELOC_NUMBER (R_ARM_RABS32, 253) RELOC_NUMBER (R_ARM_RPC24, 254) RELOC_NUMBER (R_ARM_RBASE, 255) END_RELOC_NUMBERS #endif /* _ELF_ARM_H */