/***********************************************************************
* xflat/tools/thumb2/arch.h
* ARM thumb2 ELF support for BFD.
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Derived from XFLAT:
*
* Copyright (c) 2006, Cadenux, LLC. All rights reserved.
* Copyright (c) 2006, Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 */
