/***********************************************************************
* xflat/tools/arm/arch.h
* ARM thumb2 ELF support for BFD.
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Simply lifted with minimal change from the BFD, binutils 2.19.1:
*
* Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004
* 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*
***********************************************************************/
#ifndef _TOOLCHAIN_NXFLAT_ARM_ARCH_H
#define _TOOLCHAIN_NXFLAT_ARM_ARCH_H
#include "reloc-macros.h"
/* Inform ldnxflat that this is 32-bit ARM code */
#define NXFLAT_ARM 1
#undef NXFLAT_THUMB2
/* Processor specific flags for the ELF header e_flags field. */
#define EF_ARM_RELEXEC 0x01
#define EF_ARM_HASENTRY 0x02
#define EF_ARM_INTERWORK 0x04
#define EF_ARM_APCS_26 0x08
#define EF_ARM_APCS_FLOAT 0x10
#define EF_ARM_PIC 0x20
#define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */
#define EF_ARM_NEW_ABI 0x80
#define EF_ARM_OLD_ABI 0x100
#define EF_ARM_SOFT_FLOAT 0x200
#define EF_ARM_VFP_FLOAT 0x400
#define EF_ARM_MAVERICK_FLOAT 0x800
/* Frame unwind information */
#define PT_ARM_EXIDX (PT_LOPROC + 1)
/* Other constants defined in the ARM ELF spec. version B-01. */
#define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */
#define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */
#define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */
#define EF_ARM_EABIMASK 0xFF000000
/* Constants defined in AAELF. */
#define EF_ARM_BE8 0x00800000
#define EF_ARM_LE8 0x00400000
#define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK)
#define EF_ARM_EABI_UNKNOWN 0x00000000
#define EF_ARM_EABI_VER1 0x01000000
#define EF_ARM_EABI_VER2 0x02000000
#define EF_ARM_EABI_VER3 0x03000000
#define EF_ARM_EABI_VER4 0x04000000
#define EF_ARM_EABI_VER5 0x05000000
/* Local aliases for some flags to match names used by COFF port. */
#define F_INTERWORK EF_ARM_INTERWORK
#define F_APCS26 EF_ARM_APCS_26
#define F_APCS_FLOAT EF_ARM_APCS_FLOAT
#define F_PIC EF_ARM_PIC
#define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT
#define F_VFP_FLOAT EF_ARM_VFP_FLOAT
/* Additional symbol types for Thumb. */
#define STT_ARM_TFUNC 13 /* A Thumb function. */
#define STT_ARM_16BIT 15 /* A Thumb label. */
/* Additional section types. */
#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */
#define SHT_ARM_PREEMPTMAP 0x70000002 /* Section pre-emption details. */
#define SHT_ARM_ATTRIBUTES 0x70000003 /* Section holds attributes. */
/* 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. */
/* Values for the Tag_CPU_arch EABI attribute. */
#define TAG_CPU_ARCH_PRE_V4 0
#define TAG_CPU_ARCH_V4 1
#define TAG_CPU_ARCH_V4T 2
#define TAG_CPU_ARCH_V5T 3
#define TAG_CPU_ARCH_V5TE 4
#define TAG_CPU_ARCH_V5TEJ 5
#define TAG_CPU_ARCH_V6 6
#define TAG_CPU_ARCH_V6KZ 7
#define TAG_CPU_ARCH_V6T2 8
#define TAG_CPU_ARCH_V6K 9
#define TAG_CPU_ARCH_V7 10
/* Relocation types. */
START_RELOC_NUMBERS (elf_arm_reloc_type)
/* AAELF official names and numbers. */
RELOC_NUMBER (R_ARM_NONE, 0)
RELOC_NUMBER (R_ARM_PC24, 1) /* deprecated */
RELOC_NUMBER (R_ARM_ABS32, 2)
RELOC_NUMBER (R_ARM_REL32, 3)
RELOC_NUMBER (R_ARM_LDR_PC_G0, 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_CALL, 10)
RELOC_NUMBER (R_ARM_THM_PC8, 11)
RELOC_NUMBER (R_ARM_BREL_ADJ, 12)
RELOC_NUMBER (R_ARM_SWI24, 13) /* obsolete */
RELOC_NUMBER (R_ARM_THM_SWI8, 14) /* obsolete */
RELOC_NUMBER (R_ARM_XPC25, 15) /* obsolete */
RELOC_NUMBER (R_ARM_THM_XPC22, 16) /* obsolete */
RELOC_NUMBER (R_ARM_TLS_DTPMOD32, 17)
RELOC_NUMBER (R_ARM_TLS_DTPOFF32, 18)
RELOC_NUMBER (R_ARM_TLS_TPOFF32, 19)
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_GOTOFF32, 24) /* 32 bit offset to GOT. */
RELOC_NUMBER (R_ARM_BASE_PREL, 25) /* 32 bit PC relative offset to GOT. */
RELOC_NUMBER (R_ARM_GOT_BREL, 26) /* 32 bit GOT entry. */
RELOC_NUMBER (R_ARM_PLT32, 27) /* deprecated - 32 bit PLT address. */
RELOC_NUMBER (R_ARM_CALL, 28)
RELOC_NUMBER (R_ARM_JUMP24, 29)
RELOC_NUMBER (R_ARM_THM_JUMP24, 30)
RELOC_NUMBER (R_ARM_BASE_ABS, 31)
RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) /* obsolete */
RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) /* obsolete */
RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) /* obsolete */
RELOC_NUMBER (R_ARM_LDR_SBREL_11_0, 35) /* deprecated, should have _NC suffix */
RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 36) /* deprecated, should have _NC suffix */
RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 37) /* deprecated, should have _CK suffix */
RELOC_NUMBER (R_ARM_TARGET1, 38)
RELOC_NUMBER (R_ARM_SBREL31, 39) /* deprecated */
RELOC_NUMBER (R_ARM_V4BX, 40)
RELOC_NUMBER (R_ARM_TARGET2, 41)
RELOC_NUMBER (R_ARM_PREL31, 42)
RELOC_NUMBER (R_ARM_MOVW_ABS_NC, 43)
RELOC_NUMBER (R_ARM_MOVT_ABS, 44)
RELOC_NUMBER (R_ARM_MOVW_PREL_NC, 45)
RELOC_NUMBER (R_ARM_MOVT_PREL, 46)
RELOC_NUMBER (R_ARM_THM_MOVW_ABS_NC, 47)
RELOC_NUMBER (R_ARM_THM_MOVT_ABS, 48)
RELOC_NUMBER (R_ARM_THM_MOVW_PREL_NC, 49)
RELOC_NUMBER (R_ARM_THM_MOVT_PREL, 50)
RELOC_NUMBER (R_ARM_THM_JUMP19, 51)
RELOC_NUMBER (R_ARM_THM_JUMP6, 52)
RELOC_NUMBER (R_ARM_THM_ALU_PREL_11_0, 53)
RELOC_NUMBER (R_ARM_THM_PC12, 54)
RELOC_NUMBER (R_ARM_ABS32_NOI, 55)
RELOC_NUMBER (R_ARM_REL32_NOI, 56)
RELOC_NUMBER (R_ARM_ALU_PC_G0_NC, 57)
RELOC_NUMBER (R_ARM_ALU_PC_G0, 58)
RELOC_NUMBER (R_ARM_ALU_PC_G1_NC, 59)
RELOC_NUMBER (R_ARM_ALU_PC_G1, 60)
RELOC_NUMBER (R_ARM_ALU_PC_G2, 61)
RELOC_NUMBER (R_ARM_LDR_PC_G1, 62)
RELOC_NUMBER (R_ARM_LDR_PC_G2, 63)
RELOC_NUMBER (R_ARM_LDRS_PC_G0, 64)
RELOC_NUMBER (R_ARM_LDRS_PC_G1, 65)
RELOC_NUMBER (R_ARM_LDRS_PC_G2, 66)
RELOC_NUMBER (R_ARM_LDC_PC_G0, 67)
RELOC_NUMBER (R_ARM_LDC_PC_G1, 68)
RELOC_NUMBER (R_ARM_LDC_PC_G2, 69)
RELOC_NUMBER (R_ARM_ALU_SB_G0_NC, 70)
RELOC_NUMBER (R_ARM_ALU_SB_G0, 71)
RELOC_NUMBER (R_ARM_ALU_SB_G1_NC, 72)
RELOC_NUMBER (R_ARM_ALU_SB_G1, 73)
RELOC_NUMBER (R_ARM_ALU_SB_G2, 74)
RELOC_NUMBER (R_ARM_LDR_SB_G0, 75)
RELOC_NUMBER (R_ARM_LDR_SB_G1, 76)
RELOC_NUMBER (R_ARM_LDR_SB_G2, 77)
RELOC_NUMBER (R_ARM_LDRS_SB_G0, 78)
RELOC_NUMBER (R_ARM_LDRS_SB_G1, 79)
RELOC_NUMBER (R_ARM_LDRS_SB_G2, 80)
RELOC_NUMBER (R_ARM_LDC_SB_G0, 81)
RELOC_NUMBER (R_ARM_LDC_SB_G1, 82)
RELOC_NUMBER (R_ARM_LDC_SB_G2, 83)
RELOC_NUMBER (R_ARM_MOVW_BREL_NC, 84)
RELOC_NUMBER (R_ARM_MOVT_BREL, 85)
RELOC_NUMBER (R_ARM_MOVW_BREL, 86)
RELOC_NUMBER (R_ARM_THM_MOVW_BREL_NC, 87)
RELOC_NUMBER (R_ARM_THM_MOVT_BREL, 88)
RELOC_NUMBER (R_ARM_THM_MOVW_BREL, 89)
/* 90-93 unallocated */
RELOC_NUMBER (R_ARM_PLT32_ABS, 94)
RELOC_NUMBER (R_ARM_GOT_ABS, 95)
RELOC_NUMBER (R_ARM_GOT_PREL, 96)
RELOC_NUMBER (R_ARM_GOT_BREL12, 97)
RELOC_NUMBER (R_ARM_GOTOFF12, 98)
RELOC_NUMBER (R_ARM_GOTRELAX, 99)
RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) /* deprecated - old C++ abi */
RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) /* deprecated - old C++ abi */
RELOC_NUMBER (R_ARM_THM_JUMP11, 102)
RELOC_NUMBER (R_ARM_THM_JUMP8, 103)
RELOC_NUMBER (R_ARM_TLS_GD32, 104)
RELOC_NUMBER (R_ARM_TLS_LDM32, 105)
RELOC_NUMBER (R_ARM_TLS_LDO32, 106)
RELOC_NUMBER (R_ARM_TLS_IE32, 107)
RELOC_NUMBER (R_ARM_TLS_LE32, 108)
RELOC_NUMBER (R_ARM_TLS_LDO12, 109)
RELOC_NUMBER (R_ARM_TLS_LE12, 110)
RELOC_NUMBER (R_ARM_TLS_IE12GP, 111)
/* 112 - 127 private range */
RELOC_NUMBER (R_ARM_ME_TOO, 128) /* obsolete */
/* Extensions? R=read-only? */
RELOC_NUMBER (R_ARM_RXPC25, 249)
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)
/* Unofficial names for some of the relocs. */
FAKE_RELOC (R_ARM_GOTOFF, R_ARM_GOTOFF32) /* 32 bit offset to GOT. */
FAKE_RELOC (R_ARM_THM_PC22, R_ARM_THM_CALL)
FAKE_RELOC (R_ARM_THM_PC11, R_ARM_THM_JUMP11)
FAKE_RELOC (R_ARM_THM_PC9, R_ARM_THM_JUMP8)
/* Relocs with both a different name, and (apparently) different meaning in
GNU usage. */
FAKE_RELOC (R_ARM_GOTPC, R_ARM_BASE_PREL) /* 32 bit PC relative offset to GOT. */
FAKE_RELOC (R_ARM_GOT32, R_ARM_GOT_BREL) /* 32 bit GOT entry. */
FAKE_RELOC (R_ARM_ROSEGREL32, R_ARM_SBREL31) /* ??? */
FAKE_RELOC (R_ARM_AMP_VCALL9, R_ARM_BREL_ADJ) /* Thumb-something. Not used. */
END_RELOC_NUMBERS (R_ARM_max = 256)
#ifdef BFD_ARCH_SIZE
/* EABI object attributes. */
enum
{
/* 0-3 are generic. */
Tag_CPU_raw_name = 4,
Tag_CPU_name,
Tag_CPU_arch,
Tag_CPU_arch_profile,
Tag_ARM_ISA_use,
Tag_THUMB_ISA_use,
Tag_VFP_arch,
Tag_WMMX_arch,
Tag_NEON_arch,
Tag_PCS_config,
Tag_ABI_PCS_R9_use,
Tag_ABI_PCS_RW_data,
Tag_ABI_PCS_RO_data,
Tag_ABI_PCS_GOT_use,
Tag_ABI_PCS_wchar_t,
Tag_ABI_FP_rounding,
Tag_ABI_FP_denormal,
Tag_ABI_FP_exceptions,
Tag_ABI_FP_user_exceptions,
Tag_ABI_FP_number_model,
Tag_ABI_align8_needed,
Tag_ABI_align8_preserved,
Tag_ABI_enum_size,
Tag_ABI_HardFP_use,
Tag_ABI_VFP_args,
Tag_ABI_WMMX_args,
Tag_ABI_optimization_goals,
Tag_ABI_FP_optimization_goals,
/* 32 is generic. */
};
#endif
/* The name of the note section used to identify arm variants. */
#define ARM_NOTE_SECTION ".note.gnu.arm.ident"
/* Special section names. */
#define ELF_STRING_ARM_unwind ".ARM.exidx"
#define ELF_STRING_ARM_unwind_info ".ARM.extab"
#define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx."
#define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab."
#endif /* _TOOLCHAIN_NXFLAT_ARM_ARCH_H */
