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303 lines
12 KiB
303 lines
12 KiB
/*********************************************************************** |
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* xflat/tools/thumb2/arch.h |
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* ARM thumb2 ELF support for BFD. |
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* |
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* Copyright (C) 2009 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Simply lifted with minimal change from the BFD, binutils 2.19.1: |
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* |
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* Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
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* Free Software Foundation, Inc. |
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* |
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* This file is part of BFD, the Binary File Descriptor library. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
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* |
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***********************************************************************/ |
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#ifndef _TOOLCHAIN_NXFLAT_THUMB2_ARCH_H |
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#define _TOOLCHAIN_NXFLAT_THUMB2_ARCH_H |
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#include "reloc-macros.h" |
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/* Inform ldnxflat that this is 16-bit Thumb2 code */ |
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#define NXFLAT_ARM 1 |
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#define NXFLAT_THUMB2 1 |
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/* Processor specific flags for the ELF header e_flags field. */ |
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#define EF_ARM_RELEXEC 0x01 |
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#define EF_ARM_HASENTRY 0x02 |
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#define EF_ARM_INTERWORK 0x04 |
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#define EF_ARM_APCS_26 0x08 |
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#define EF_ARM_APCS_FLOAT 0x10 |
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#define EF_ARM_PIC 0x20 |
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#define EF_ARM_ALIGN8 0x40 /* 8-bit structure alignment is in use. */ |
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#define EF_ARM_NEW_ABI 0x80 |
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#define EF_ARM_OLD_ABI 0x100 |
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#define EF_ARM_SOFT_FLOAT 0x200 |
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#define EF_ARM_VFP_FLOAT 0x400 |
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#define EF_ARM_MAVERICK_FLOAT 0x800 |
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/* Frame unwind information */ |
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#define PT_ARM_EXIDX (PT_LOPROC + 1) |
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/* Other constants defined in the ARM ELF spec. version B-01. */ |
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#define EF_ARM_SYMSARESORTED 0x04 /* NB conflicts with EF_INTERWORK */ |
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#define EF_ARM_DYNSYMSUSESEGIDX 0x08 /* NB conflicts with EF_APCS26 */ |
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#define EF_ARM_MAPSYMSFIRST 0x10 /* NB conflicts with EF_APCS_FLOAT */ |
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#define EF_ARM_EABIMASK 0xFF000000 |
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/* Constants defined in AAELF. */ |
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#define EF_ARM_BE8 0x00800000 |
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#define EF_ARM_LE8 0x00400000 |
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#define EF_ARM_EABI_VERSION(flags) ((flags) & EF_ARM_EABIMASK) |
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#define EF_ARM_EABI_UNKNOWN 0x00000000 |
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#define EF_ARM_EABI_VER1 0x01000000 |
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#define EF_ARM_EABI_VER2 0x02000000 |
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#define EF_ARM_EABI_VER3 0x03000000 |
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#define EF_ARM_EABI_VER4 0x04000000 |
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#define EF_ARM_EABI_VER5 0x05000000 |
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/* Local aliases for some flags to match names used by COFF port. */ |
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#define F_INTERWORK EF_ARM_INTERWORK |
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#define F_APCS26 EF_ARM_APCS_26 |
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#define F_APCS_FLOAT EF_ARM_APCS_FLOAT |
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#define F_PIC EF_ARM_PIC |
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#define F_SOFT_FLOAT EF_ARM_SOFT_FLOAT |
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#define F_VFP_FLOAT EF_ARM_VFP_FLOAT |
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/* Additional symbol types for Thumb. */ |
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#define STT_ARM_TFUNC 13 /* A Thumb function. */ |
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#define STT_ARM_16BIT 15 /* A Thumb label. */ |
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/* Additional section types. */ |
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#define SHT_ARM_EXIDX 0x70000001 /* Section holds ARM unwind info. */ |
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#define SHT_ARM_PREEMPTMAP 0x70000002 /* Section pre-emption details. */ |
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#define SHT_ARM_ATTRIBUTES 0x70000003 /* Section holds attributes. */ |
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/* ARM-specific values for sh_flags. */ |
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#define SHF_ENTRYSECT 0x10000000 /* Section contains an entry point. */ |
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#define SHF_COMDEF 0x80000000 /* Section may be multiply defined in the input to a link step. */ |
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/* ARM-specific program header flags. */ |
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#define PF_ARM_SB 0x10000000 /* Segment contains the location addressed by the static base. */ |
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#define PF_ARM_PI 0x20000000 /* Segment is position-independent. */ |
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#define PF_ARM_ABS 0x40000000 /* Segment must be loaded at its base address. */ |
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/* Values for the Tag_CPU_arch EABI attribute. */ |
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#define TAG_CPU_ARCH_PRE_V4 0 |
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#define TAG_CPU_ARCH_V4 1 |
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#define TAG_CPU_ARCH_V4T 2 |
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#define TAG_CPU_ARCH_V5T 3 |
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#define TAG_CPU_ARCH_V5TE 4 |
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#define TAG_CPU_ARCH_V5TEJ 5 |
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#define TAG_CPU_ARCH_V6 6 |
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#define TAG_CPU_ARCH_V6KZ 7 |
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#define TAG_CPU_ARCH_V6T2 8 |
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#define TAG_CPU_ARCH_V6K 9 |
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#define TAG_CPU_ARCH_V7 10 |
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/* Relocation types. */ |
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START_RELOC_NUMBERS (elf_arm_reloc_type) |
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/* AAELF official names and numbers. */ |
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RELOC_NUMBER (R_ARM_NONE, 0) |
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RELOC_NUMBER (R_ARM_PC24, 1) /* deprecated */ |
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RELOC_NUMBER (R_ARM_ABS32, 2) |
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RELOC_NUMBER (R_ARM_REL32, 3) |
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RELOC_NUMBER (R_ARM_LDR_PC_G0, 4) |
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RELOC_NUMBER (R_ARM_ABS16, 5) |
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RELOC_NUMBER (R_ARM_ABS12, 6) |
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RELOC_NUMBER (R_ARM_THM_ABS5, 7) |
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RELOC_NUMBER (R_ARM_ABS8, 8) |
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RELOC_NUMBER (R_ARM_SBREL32, 9) |
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RELOC_NUMBER (R_ARM_THM_CALL, 10) |
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RELOC_NUMBER (R_ARM_THM_PC8, 11) |
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RELOC_NUMBER (R_ARM_BREL_ADJ, 12) |
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RELOC_NUMBER (R_ARM_SWI24, 13) /* obsolete */ |
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RELOC_NUMBER (R_ARM_THM_SWI8, 14) /* obsolete */ |
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RELOC_NUMBER (R_ARM_XPC25, 15) /* obsolete */ |
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RELOC_NUMBER (R_ARM_THM_XPC22, 16) /* obsolete */ |
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RELOC_NUMBER (R_ARM_TLS_DTPMOD32, 17) |
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RELOC_NUMBER (R_ARM_TLS_DTPOFF32, 18) |
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RELOC_NUMBER (R_ARM_TLS_TPOFF32, 19) |
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RELOC_NUMBER (R_ARM_COPY, 20) /* Copy symbol at runtime. */ |
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RELOC_NUMBER (R_ARM_GLOB_DAT, 21) /* Create GOT entry. */ |
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RELOC_NUMBER (R_ARM_JUMP_SLOT, 22) /* Create PLT entry. */ |
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RELOC_NUMBER (R_ARM_RELATIVE, 23) /* Adjust by program base. */ |
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RELOC_NUMBER (R_ARM_GOTOFF32, 24) /* 32 bit offset to GOT. */ |
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RELOC_NUMBER (R_ARM_BASE_PREL, 25) /* 32 bit PC relative offset to GOT. */ |
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RELOC_NUMBER (R_ARM_GOT_BREL, 26) /* 32 bit GOT entry. */ |
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RELOC_NUMBER (R_ARM_PLT32, 27) /* deprecated - 32 bit PLT address. */ |
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RELOC_NUMBER (R_ARM_CALL, 28) |
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RELOC_NUMBER (R_ARM_JUMP24, 29) |
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RELOC_NUMBER (R_ARM_THM_JUMP24, 30) |
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RELOC_NUMBER (R_ARM_BASE_ABS, 31) |
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RELOC_NUMBER (R_ARM_ALU_PCREL7_0, 32) /* obsolete */ |
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RELOC_NUMBER (R_ARM_ALU_PCREL15_8, 33) /* obsolete */ |
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RELOC_NUMBER (R_ARM_ALU_PCREL23_15, 34) /* obsolete */ |
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RELOC_NUMBER (R_ARM_LDR_SBREL_11_0, 35) /* deprecated, should have _NC suffix */ |
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RELOC_NUMBER (R_ARM_ALU_SBREL_19_12, 36) /* deprecated, should have _NC suffix */ |
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RELOC_NUMBER (R_ARM_ALU_SBREL_27_20, 37) /* deprecated, should have _CK suffix */ |
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RELOC_NUMBER (R_ARM_TARGET1, 38) |
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RELOC_NUMBER (R_ARM_SBREL31, 39) /* deprecated */ |
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RELOC_NUMBER (R_ARM_V4BX, 40) |
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RELOC_NUMBER (R_ARM_TARGET2, 41) |
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RELOC_NUMBER (R_ARM_PREL31, 42) |
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RELOC_NUMBER (R_ARM_MOVW_ABS_NC, 43) |
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RELOC_NUMBER (R_ARM_MOVT_ABS, 44) |
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RELOC_NUMBER (R_ARM_MOVW_PREL_NC, 45) |
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RELOC_NUMBER (R_ARM_MOVT_PREL, 46) |
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RELOC_NUMBER (R_ARM_THM_MOVW_ABS_NC, 47) |
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RELOC_NUMBER (R_ARM_THM_MOVT_ABS, 48) |
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RELOC_NUMBER (R_ARM_THM_MOVW_PREL_NC, 49) |
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RELOC_NUMBER (R_ARM_THM_MOVT_PREL, 50) |
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RELOC_NUMBER (R_ARM_THM_JUMP19, 51) |
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RELOC_NUMBER (R_ARM_THM_JUMP6, 52) |
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RELOC_NUMBER (R_ARM_THM_ALU_PREL_11_0, 53) |
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RELOC_NUMBER (R_ARM_THM_PC12, 54) |
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RELOC_NUMBER (R_ARM_ABS32_NOI, 55) |
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RELOC_NUMBER (R_ARM_REL32_NOI, 56) |
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RELOC_NUMBER (R_ARM_ALU_PC_G0_NC, 57) |
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RELOC_NUMBER (R_ARM_ALU_PC_G0, 58) |
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RELOC_NUMBER (R_ARM_ALU_PC_G1_NC, 59) |
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RELOC_NUMBER (R_ARM_ALU_PC_G1, 60) |
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RELOC_NUMBER (R_ARM_ALU_PC_G2, 61) |
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RELOC_NUMBER (R_ARM_LDR_PC_G1, 62) |
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RELOC_NUMBER (R_ARM_LDR_PC_G2, 63) |
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RELOC_NUMBER (R_ARM_LDRS_PC_G0, 64) |
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RELOC_NUMBER (R_ARM_LDRS_PC_G1, 65) |
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RELOC_NUMBER (R_ARM_LDRS_PC_G2, 66) |
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RELOC_NUMBER (R_ARM_LDC_PC_G0, 67) |
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RELOC_NUMBER (R_ARM_LDC_PC_G1, 68) |
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RELOC_NUMBER (R_ARM_LDC_PC_G2, 69) |
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RELOC_NUMBER (R_ARM_ALU_SB_G0_NC, 70) |
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RELOC_NUMBER (R_ARM_ALU_SB_G0, 71) |
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RELOC_NUMBER (R_ARM_ALU_SB_G1_NC, 72) |
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RELOC_NUMBER (R_ARM_ALU_SB_G1, 73) |
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RELOC_NUMBER (R_ARM_ALU_SB_G2, 74) |
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RELOC_NUMBER (R_ARM_LDR_SB_G0, 75) |
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RELOC_NUMBER (R_ARM_LDR_SB_G1, 76) |
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RELOC_NUMBER (R_ARM_LDR_SB_G2, 77) |
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RELOC_NUMBER (R_ARM_LDRS_SB_G0, 78) |
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RELOC_NUMBER (R_ARM_LDRS_SB_G1, 79) |
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RELOC_NUMBER (R_ARM_LDRS_SB_G2, 80) |
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RELOC_NUMBER (R_ARM_LDC_SB_G0, 81) |
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RELOC_NUMBER (R_ARM_LDC_SB_G1, 82) |
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RELOC_NUMBER (R_ARM_LDC_SB_G2, 83) |
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RELOC_NUMBER (R_ARM_MOVW_BREL_NC, 84) |
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RELOC_NUMBER (R_ARM_MOVT_BREL, 85) |
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RELOC_NUMBER (R_ARM_MOVW_BREL, 86) |
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RELOC_NUMBER (R_ARM_THM_MOVW_BREL_NC, 87) |
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RELOC_NUMBER (R_ARM_THM_MOVT_BREL, 88) |
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RELOC_NUMBER (R_ARM_THM_MOVW_BREL, 89) |
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/* 90-93 unallocated */ |
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RELOC_NUMBER (R_ARM_PLT32_ABS, 94) |
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RELOC_NUMBER (R_ARM_GOT_ABS, 95) |
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RELOC_NUMBER (R_ARM_GOT_PREL, 96) |
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RELOC_NUMBER (R_ARM_GOT_BREL12, 97) |
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RELOC_NUMBER (R_ARM_GOTOFF12, 98) |
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RELOC_NUMBER (R_ARM_GOTRELAX, 99) |
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RELOC_NUMBER (R_ARM_GNU_VTENTRY, 100) /* deprecated - old C++ abi */ |
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RELOC_NUMBER (R_ARM_GNU_VTINHERIT, 101) /* deprecated - old C++ abi */ |
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RELOC_NUMBER (R_ARM_THM_JUMP11, 102) |
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RELOC_NUMBER (R_ARM_THM_JUMP8, 103) |
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RELOC_NUMBER (R_ARM_TLS_GD32, 104) |
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RELOC_NUMBER (R_ARM_TLS_LDM32, 105) |
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RELOC_NUMBER (R_ARM_TLS_LDO32, 106) |
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RELOC_NUMBER (R_ARM_TLS_IE32, 107) |
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RELOC_NUMBER (R_ARM_TLS_LE32, 108) |
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RELOC_NUMBER (R_ARM_TLS_LDO12, 109) |
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RELOC_NUMBER (R_ARM_TLS_LE12, 110) |
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RELOC_NUMBER (R_ARM_TLS_IE12GP, 111) |
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/* 112 - 127 private range */ |
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RELOC_NUMBER (R_ARM_ME_TOO, 128) /* obsolete */ |
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/* Extensions? R=read-only? */ |
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RELOC_NUMBER (R_ARM_RXPC25, 249) |
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RELOC_NUMBER (R_ARM_RSBREL32, 250) |
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RELOC_NUMBER (R_ARM_THM_RPC22, 251) |
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RELOC_NUMBER (R_ARM_RREL32, 252) |
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RELOC_NUMBER (R_ARM_RABS32, 253) |
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RELOC_NUMBER (R_ARM_RPC24, 254) |
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RELOC_NUMBER (R_ARM_RBASE, 255) |
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/* Unofficial names for some of the relocs. */ |
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FAKE_RELOC (R_ARM_GOTOFF, R_ARM_GOTOFF32) /* 32 bit offset to GOT. */ |
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FAKE_RELOC (R_ARM_THM_PC22, R_ARM_THM_CALL) |
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FAKE_RELOC (R_ARM_THM_PC11, R_ARM_THM_JUMP11) |
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FAKE_RELOC (R_ARM_THM_PC9, R_ARM_THM_JUMP8) |
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/* Relocs with both a different name, and (apparently) different meaning in |
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GNU usage. */ |
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FAKE_RELOC (R_ARM_GOTPC, R_ARM_BASE_PREL) /* 32 bit PC relative offset to GOT. */ |
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FAKE_RELOC (R_ARM_GOT32, R_ARM_GOT_BREL) /* 32 bit GOT entry. */ |
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FAKE_RELOC (R_ARM_ROSEGREL32, R_ARM_SBREL31) /* ??? */ |
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FAKE_RELOC (R_ARM_AMP_VCALL9, R_ARM_BREL_ADJ) /* Thumb-something. Not used. */ |
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END_RELOC_NUMBERS (R_ARM_max = 256) |
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#ifdef BFD_ARCH_SIZE |
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/* EABI object attributes. */ |
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enum |
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{ |
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/* 0-3 are generic. */ |
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Tag_CPU_raw_name = 4, |
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Tag_CPU_name, |
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Tag_CPU_arch, |
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Tag_CPU_arch_profile, |
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Tag_ARM_ISA_use, |
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Tag_THUMB_ISA_use, |
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Tag_VFP_arch, |
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Tag_WMMX_arch, |
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Tag_NEON_arch, |
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Tag_PCS_config, |
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Tag_ABI_PCS_R9_use, |
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Tag_ABI_PCS_RW_data, |
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Tag_ABI_PCS_RO_data, |
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Tag_ABI_PCS_GOT_use, |
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Tag_ABI_PCS_wchar_t, |
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Tag_ABI_FP_rounding, |
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Tag_ABI_FP_denormal, |
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Tag_ABI_FP_exceptions, |
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Tag_ABI_FP_user_exceptions, |
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Tag_ABI_FP_number_model, |
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Tag_ABI_align8_needed, |
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Tag_ABI_align8_preserved, |
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Tag_ABI_enum_size, |
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Tag_ABI_HardFP_use, |
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Tag_ABI_VFP_args, |
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Tag_ABI_WMMX_args, |
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Tag_ABI_optimization_goals, |
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Tag_ABI_FP_optimization_goals, |
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/* 32 is generic. */ |
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}; |
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#endif |
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/* The name of the note section used to identify arm variants. */ |
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#define ARM_NOTE_SECTION ".note.gnu.arm.ident" |
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/* Special section names. */ |
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#define ELF_STRING_ARM_unwind ".ARM.exidx" |
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#define ELF_STRING_ARM_unwind_info ".ARM.extab" |
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#define ELF_STRING_ARM_unwind_once ".gnu.linkonce.armexidx." |
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#define ELF_STRING_ARM_unwind_info_once ".gnu.linkonce.armextab." |
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#endif /* _TOOLCHAIN_NXFLAT_THUMB2_ARCH_H */
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