newlib/include/elf/arm.h

/* ARM ELF support for BFD.
   Copyright (C) 1998, 1999, 2000 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 "elf/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

/* Other constants defined in the ARM ELF spec. version A-08.  */
#define EF_ARM_SYMSARESORTED 0x04	/* NB conflicts with EF_INTERWORK */
#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

/* 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

/* 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,   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_RELOC2, 104)
  FAKE_RELOC   (LAST_INVALID_RELOC2,  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 (R_ARM_max)

#endif /* _ELF_ARM_H */