e5d6e09ee6
This patch is part of a series of patches to add support for Armv8.1-M Mainline instructions to binutils. This adds infrastructure for the BF instructions which is one of the first instructions in Arm that have more than one relocations in them. This is the third infrastructure patch that adds a new relocation R_ARM_THM_BF16. The inconsistency between external R_ARM_THM_BF16 and internal BFD_RELOC_ARM_THUMB_BF17 is because internally we count the static bit-0 of the immediate and we don't externally. ChangeLog entries are as follows : *** bfd/ChangeLog *** 2019-04-15 Sudakshina Das <sudi.das@arm.com> * reloc.c (BFD_RELOC_ARM_THUMB_BF17): New enum. * bfd-in2.h: Regenerated. * libbfd.h: Regenerated. * bfd-elf32-arm.c (elf32_arm_howto_table_1): New entry for R_ARM_THM_BF16. (elf32_arm_reloc_map elf32_arm_reloc_map): Map BFD_RELOC_ARM_THUMB_BF17 and R_ARM_THM_BF16 together. (get_value_helper): New reloc helper. (elf32_arm_final_link_relocate): New switch case for R_ARM_THM_BF16. *** elfcpp/ChangeLog *** 2019-04-15 Sudakshina Das <sudi.das@arm.com> * arm.h (R_ARM_THM_BF16): New relocation code. *** gas/ChangeLog *** 2019-04-15 Sudakshina Das <sudi.das@arm.com> * config/tc-arm.c (md_pcrel_from_section): New switch case for BFD_RELOC_ARM_THUMB_BF17. (md_appdy_fix): Likewise. (tc_gen_reloc): Likewise. *** include/ChangeLog *** 2019-04-15 Sudakshina Das <sudi.das@arm.com> * elf/arm.h (START_RELOC_NUMBERS): New entry for R_ARM_THM_BF16. *** opcodes/ChangeLog *** 2019-04-15 Sudakshina Das <sudi.das@arm.com> * arm-dis.c (print_insn_thumb32): Updated to accept new %W pattern.
375 lines
13 KiB
C++
375 lines
13 KiB
C++
// arm.h -- ELF definitions specific to EM_ARM -*- C++ -*-
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// Copyright (C) 2009-2019 Free Software Foundation, Inc.
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// Written by Doug Kwan <dougkwan@google.com>.
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// This file is part of elfcpp.
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public License
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// as published by the Free Software Foundation; either version 2, or
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// (at your option) any later version.
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// In addition to the permissions in the GNU Library General Public
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// License, the Free Software Foundation gives you unlimited
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// permission to link the compiled version of this file into
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// combinations with other programs, and to distribute those
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// combinations without any restriction coming from the use of this
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// file. (The Library Public License restrictions do apply in other
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// respects; for example, they cover modification of the file, and
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// distribution when not linked into a combined executable.)
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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// 02110-1301, USA.
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#ifndef ELFCPP_ARM_H
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#define ELFCPP_ARM_H
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// The relocation type information is taken from:
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//
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// ELF for the ARM Architecture
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// Document number: ARM IHI 0044C, current through ABI release 2.07
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// Date of Issue: 10th October, 2008
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//
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namespace elfcpp
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{
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//
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// ARM Relocations Codes
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//
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// Operation notes:
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// S: Address of the symbol.
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// A: Addend for relocation.
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// P: Address of the place being relocated.
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// Pa: Adjusted address of the place being relocated (P & 0xfffffffc)
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// T: is 1 if S has type STT_FUNC and the symbol addresses a Thumb
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// instruction.Thumb-bit; it is 0 otherwise.
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// B(S): Addressing origin of the output segment defining S.
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// GOT_ORG: Addressing origin of the Global Offset Table.
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// GOT(S): Address of the GOT entry for S.
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//
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enum
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{
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// Type Class Operation
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// ------------------------------
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R_ARM_NONE = 0, // Static Misc
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R_ARM_PC24 = 1, // Deprecated ARM ((S + A) | T) - P
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R_ARM_ABS32 = 2, // Static Data (S + A) | T
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R_ARM_REL32 = 3, // Static Data ((S + A) | T) - P
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R_ARM_LDR_PC_G0 = 4, // Static ARM S + A - P
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R_ARM_ABS16 = 5, // Static Data S + A
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R_ARM_ABS12 = 6, // Static ARM S + A
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R_ARM_THM_ABS5 = 7, // Static Thumb16 S + A
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R_ARM_ABS8 = 8, // Static Data S + A
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R_ARM_SBREL32 = 9, // Static Data ((S + A) | T) - B(S)
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R_ARM_THM_CALL = 10, // Static Thumb32 ((S + A) | T) - P
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R_ARM_THM_PC8 = 11, // Static Thumb16
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R_ARM_BREL_ADJ = 12, // Dynamic Data DeltaB(S) + A
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R_ARM_TLS_DESC = 13, // Dynamic Data
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R_ARM_THM_SWI8 = 14, // Obsolete
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R_ARM_XPC25 = 15, // Obsolete
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R_ARM_THM_XPC22 = 16, // Obsolete
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R_ARM_TLS_DTPMOD32 = 17, // Dynamic Data Module(S)
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R_ARM_TLS_DTPOFF32 = 18, // Dynamic Data S + A - TLS
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R_ARM_TLS_TPOFF32 = 19, // Dynamic Data S + A - tp
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R_ARM_COPY = 20, // Dynamic Misc
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R_ARM_GLOB_DAT = 21, // Dynamic Data (S + A) | T
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R_ARM_JUMP_SLOT = 22, // Dynamic Data (S + A) | T
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R_ARM_RELATIVE = 23, // Dynamic Data B(S) + A
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R_ARM_GOTOFF32 = 24, // Static Data (((S + A) | T) - GOT_ORG
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R_ARM_BASE_PREL = 25, // Static Data B(S) + A - P
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R_ARM_GOT_BREL = 26, // Static Data GOT(S) + A - GOT_ORG
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R_ARM_PLT32 = 27, // Deprecated ARM ((S + A) | T) - P
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R_ARM_CALL = 28, // Static ARM ((S + A) | T) - P
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R_ARM_JUMP24 = 29, // Static ARM ((S + A) | T) - P
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R_ARM_THM_JUMP24 = 30, // Static Thumb32 ((S + A) | T) - P
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R_ARM_BASE_ABS = 31, // Static Data B(S) + A
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R_ARM_ALU_PCREL_7_0 = 32, // Obsolete
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R_ARM_ALU_PCREL_15_8 = 33, // Obsolete
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R_ARM_ALU_PCREL_23_15 = 34, // Obsolete
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R_ARM_LDR_SBREL_11_0_NC = 35, // Deprecated ARM S + A - B(S)
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R_ARM_ALU_SBREL_19_12_NC = 36,// Deprecated ARM S + A - B(S)
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R_ARM_ALU_SBREL_27_20_CK = 37,// Deprecated ARM S + A - B(S)
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R_ARM_TARGET1 = 38, // Data Misc (S + A) | T or
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// ((S + A) | T) - P
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R_ARM_SBREL31 = 39, // Deprecated Data ((S + A) | T) - B(S)
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R_ARM_V4BX = 40, // Static Misc
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R_ARM_TARGET2 = 41, // Static Misc
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R_ARM_PREL31 = 42, // Static Data ((S + A) | T) - P
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R_ARM_MOVW_ABS_NC = 43, // Static ARM (S + A) | T
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R_ARM_MOVT_ABS = 44, // Static ARM S + A
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R_ARM_MOVW_PREL_NC = 45, // Static ARM ((S + A) | T) - P
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R_ARM_MOVT_PREL = 46, // Static ARM S + A - P
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R_ARM_THM_MOVW_ABS_NC = 47, // Static Thumb32 (S + A) | T
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R_ARM_THM_MOVT_ABS = 48, // Static Thumb32 S + A - P
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R_ARM_THM_MOVW_PREL_NC = 49, // Static Thumb32 ((S + A) | T) - P
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R_ARM_THM_MOVT_PREL = 50, // Static Thumb32 S + A - P
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R_ARM_THM_JUMP19 = 51, // Static Thumb32 ((S + A) | T) - P
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R_ARM_THM_JUMP6 = 52, // Static Thumb16 S + A - P
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R_ARM_THM_ALU_PREL_11_0 = 53, // Static Thumb32 ((S + A) | T) - Pa
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R_ARM_THM_PC12 = 54, // Static Thumb32 S + A - Pa
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R_ARM_ABS32_NOI = 55, // Static Data S + A
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R_ARM_REL32_NOI = 56, // Static Data S + A - P
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R_ARM_ALU_PC_G0_NC = 57, // Static ARM ((S + A) | T) - P
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R_ARM_ALU_PC_G0 = 58, // Static ARM ((S + A) | T) - P
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R_ARM_ALU_PC_G1_NC = 59, // Static ARM ((S + A) | T) - P
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R_ARM_ALU_PC_G1 = 60, // Static ARM ((S + A) | T) - P
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R_ARM_ALU_PC_G2 = 61, // Static ARM ((S + A) | T) - P
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R_ARM_LDR_PC_G1 = 62, // Static ARM S + A - P
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R_ARM_LDR_PC_G2 = 63, // Static ARM S + A - P
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R_ARM_LDRS_PC_G0 = 64, // Static ARM S + A - P
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R_ARM_LDRS_PC_G1 = 65, // Static ARM S + A - P
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R_ARM_LDRS_PC_G2 = 66, // Static ARM S + A - P
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R_ARM_LDC_PC_G0 = 67, // Static ARM S + A - P
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R_ARM_LDC_PC_G1 = 68, // Static ARM S + A - P
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R_ARM_LDC_PC_G2 = 69, // Static ARM S + A - P
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R_ARM_ALU_SB_G0_NC = 70, // Static ARM ((S + A) | T) - B(S)
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R_ARM_ALU_SB_G0 = 71, // Static ARM ((S + A) | T) - B(S)
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R_ARM_ALU_SB_G1_NC = 72, // Static ARM ((S + A) | T) - B(S)
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R_ARM_ALU_SB_G1 = 73, // Static ARM ((S + A) | T) - B(S)
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R_ARM_ALU_SB_G2 = 74, // Static ARM ((S + A) | T) - B(S)
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R_ARM_LDR_SB_G0 = 75, // Static ARM S + A - B(S)
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R_ARM_LDR_SB_G1 = 76, // Static ARM S + A - B(S)
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R_ARM_LDR_SB_G2 = 77, // Static ARM S + A - B(S)
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R_ARM_LDRS_SB_G0 = 78, // Static ARM S + A - B(S)
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R_ARM_LDRS_SB_G1 = 79, // Static ARM S + A - B(S)
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R_ARM_LDRS_SB_G2 = 80, // Static ARM S + A - B(S)
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R_ARM_LDC_SB_G0 = 81, // Static ARM S + A - B(S)
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R_ARM_LDC_SB_G1 = 82, // Static ARM S + A - B(S)
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R_ARM_LDC_SB_G2 = 83, // Static ARM S + A - B(S)
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R_ARM_MOVW_BREL_NC = 84, // Static ARM ((S + A) | T) - B(S)
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R_ARM_MOVT_BREL = 85, // Static ARM S + A - B(S)
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R_ARM_MOVW_BREL = 86, // Static ARM ((S + A) | T) - B(S)
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R_ARM_THM_MOVW_BREL_NC = 87, // Static Thumb32 ((S + A) | T) - B(S)
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R_ARM_THM_MOVT_BREL = 88, // Static Thumb32 S + A - B(S)
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R_ARM_THM_MOVW_BREL = 89, // Static Thumb32 ((S + A) | T) - B(S)
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R_ARM_TLS_GOTDESC = 90, // Static Data
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R_ARM_TLS_CALL = 91, // Static ARM
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R_ARM_TLS_DESCSEQ = 92, // Static ARM TLS relaxation
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R_ARM_THM_TLS_CALL = 93, // Static Thumb32
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R_ARM_PLT32_ABS = 94, // Static Data PLT(S) + A
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R_ARM_GOT_ABS = 95, // Static Data GOT(S) + A
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R_ARM_GOT_PREL = 96, // Static Data GOT(S) + A - P
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R_ARM_GOT_BREL12 = 97, // Static ARM GOT(S) + A - GOT_ORG
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R_ARM_GOTOFF12 = 98, // Static ARM S + A - GOT_ROG
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R_ARM_GOTRELAX = 99, // Static Misc
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R_ARM_GNU_VTENTRY = 100, // Deprecated Data
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R_ARM_GNU_VTINHERIT = 101, // Deprecated Data
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R_ARM_THM_JUMP11 = 102, // Static Thumb16 S + A - P
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R_ARM_THM_JUMP8 = 103, // Static Thumb16 S + A - P
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R_ARM_TLS_GD32 = 104, // Static Data GOT(S) + A - P
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R_ARM_TLS_LDM32 = 105, // Static Data GOT(S) + A - P
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R_ARM_TLS_LDO32 = 106, // Static Data S + A - TLS
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R_ARM_TLS_IE32 = 107, // Static Data GOT(S) + A - P
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R_ARM_TLS_LE32 = 108, // Static Data S + A - tp
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R_ARM_TLS_LDO12 = 109, // Static ARM S + A - TLS
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R_ARM_TLS_LE12 = 110, // Static ARM S + A - tp
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R_ARM_TLS_IE12GP = 111, // Static ARM GOT(S) + A - GOT_ORG
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R_ARM_PRIVATE_0 = 112, // Private (n = 0, 1, ... 15)
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R_ARM_PRIVATE_1 = 113,
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R_ARM_PRIVATE_2 = 114,
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R_ARM_PRIVATE_3 = 115,
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R_ARM_PRIVATE_4 = 116,
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R_ARM_PRIVATE_5 = 117,
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R_ARM_PRIVATE_6 = 118,
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R_ARM_PRIVATE_7 = 119,
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R_ARM_PRIVATE_8 = 120,
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R_ARM_PRIVATE_9 = 121,
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R_ARM_PRIVATE_10 = 122,
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R_ARM_PRIVATE_11 = 123,
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R_ARM_PRIVATE_12 = 124,
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R_ARM_PRIVATE_13 = 125,
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R_ARM_PRIVATE_14 = 126,
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R_ARM_PRIVATE_15 = 127,
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R_ARM_ME_TOO = 128, // Obsolete
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R_ARM_THM_TLS_DESCSEQ16 = 129,// Static Thumb16
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R_ARM_THM_TLS_DESCSEQ32 = 130,// Static Thumb32
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// 131 - 135 Unallocated
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// Relocations for Armv8.1-M Mainline (BF/BFL)
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R_ARM_THM_BF16 = 136, // Static Thumb32 ((S + A) | T) – P
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// 139 Unallocated
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// 140 - 159 Dynamic Reserved for future allocation
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R_ARM_IRELATIVE = 160, // Dynamic
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// 161 - 255 Unallocated
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};
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// e_flags values used for ARM. We only support flags defined in AAELF.
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enum
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{
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EF_ARM_BE8 = 0x00800000,
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// Mask to extract EABI version, not really a flag value.
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EF_ARM_EABIMASK = 0xFF000000,
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EF_ARM_EABI_UNKNOWN = 0x00000000,
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EF_ARM_EABI_VER1 = 0x01000000,
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EF_ARM_EABI_VER2 = 0x02000000,
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EF_ARM_EABI_VER3 = 0x03000000,
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EF_ARM_EABI_VER4 = 0x04000000,
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EF_ARM_EABI_VER5 = 0x05000000,
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};
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// Extract EABI version from flags.
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inline Elf_Word
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arm_eabi_version(Elf_Word flags)
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{ return flags & EF_ARM_EABIMASK; }
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// EABI_VER5 e_flags values for identifying soft- and hard-float ABI
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// choice.
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enum
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{
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EF_ARM_ABI_FLOAT_SOFT = 0x200,
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EF_ARM_ABI_FLOAT_HARD = 0x400,
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};
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// Values for the Tag_CPU_arch EABI attribute.
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enum
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{
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TAG_CPU_ARCH_PRE_V4,
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TAG_CPU_ARCH_V4,
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TAG_CPU_ARCH_V4T,
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TAG_CPU_ARCH_V5T,
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TAG_CPU_ARCH_V5TE,
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TAG_CPU_ARCH_V5TEJ,
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TAG_CPU_ARCH_V6,
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TAG_CPU_ARCH_V6KZ,
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TAG_CPU_ARCH_V6T2,
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TAG_CPU_ARCH_V6K,
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TAG_CPU_ARCH_V7,
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TAG_CPU_ARCH_V6_M,
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TAG_CPU_ARCH_V6S_M,
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TAG_CPU_ARCH_V7E_M,
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TAG_CPU_ARCH_V8,
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MAX_TAG_CPU_ARCH = TAG_CPU_ARCH_V8,
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// Pseudo-architecture to allow objects to be compatible with the subset of
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// armv4t and armv6-m. This value should never be stored in object files.
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TAG_CPU_ARCH_V4T_PLUS_V6_M = (MAX_TAG_CPU_ARCH + 1)
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};
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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 = 5,
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Tag_CPU_arch = 6,
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Tag_CPU_arch_profile = 7,
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Tag_ARM_ISA_use = 8,
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Tag_THUMB_ISA_use = 9,
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Tag_FP_arch = 10,
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Tag_WMMX_arch = 11,
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Tag_Advanced_SIMD_arch = 12,
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Tag_PCS_config = 13,
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Tag_ABI_PCS_R9_use = 14,
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Tag_ABI_PCS_RW_data = 15,
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Tag_ABI_PCS_RO_data = 16,
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Tag_ABI_PCS_GOT_use = 17,
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Tag_ABI_PCS_wchar_t = 18,
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Tag_ABI_FP_rounding = 19,
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Tag_ABI_FP_denormal = 20,
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Tag_ABI_FP_exceptions = 21,
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Tag_ABI_FP_user_exceptions = 22,
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Tag_ABI_FP_number_model = 23,
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Tag_ABI_align_needed = 24,
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Tag_ABI_align_preserved = 25,
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Tag_ABI_enum_size = 26,
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Tag_ABI_HardFP_use = 27,
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Tag_ABI_VFP_args = 28,
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Tag_ABI_WMMX_args = 29,
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Tag_ABI_optimization_goals = 30,
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Tag_ABI_FP_optimization_goals = 31,
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// 32 is generic (Tag_compatibility).
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Tag_undefined33 = 33,
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Tag_CPU_unaligned_access = 34,
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Tag_undefined35 = 35,
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Tag_FP_HP_extension = 36,
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Tag_undefined37 = 37,
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Tag_ABI_FP_16bit_format = 38,
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Tag_undefined39 = 39,
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Tag_undefined40 = 40,
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Tag_undefined41 = 41,
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Tag_MPextension_use = 42,
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Tag_undefined43 = 43,
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Tag_DIV_use = 44,
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Tag_nodefaults = 64,
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Tag_also_compatible_with = 65,
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Tag_T2EE_use = 66,
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Tag_conformance = 67,
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Tag_Virtualization_use = 68,
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Tag_undefined69 = 69,
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Tag_MPextension_use_legacy = 70,
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// The following tags are legacy names for other tags.
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Tag_VFP_arch = Tag_FP_arch,
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Tag_ABI_align8_needed = Tag_ABI_align_needed,
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Tag_ABI_align8_preserved = Tag_ABI_align_preserved,
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Tag_VFP_HP_extension = Tag_FP_HP_extension
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};
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// Values for Tag_ABI_PCS_R9_use.
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enum
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{
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AEABI_R9_V6 = 0,
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AEABI_R9_SB = 1,
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AEABI_R9_TLS = 2,
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AEABI_R9_unused = 3
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};
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// Values for Tag_ABI_PCS_RW_data.
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enum
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{
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AEABI_PCS_RW_data_absolute = 0,
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AEABI_PCS_RW_data_PCrel = 1,
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AEABI_PCS_RW_data_SBrel = 2,
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AEABI_PCS_RW_data_unused = 3
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};
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// Values for Tag_ABI_enum_size.
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enum
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{
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AEABI_enum_unused = 0,
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AEABI_enum_short = 1,
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AEABI_enum_wide = 2,
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AEABI_enum_forced_wide = 3
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};
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// Values for Tag_ABI_FP_number_model.
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enum
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{
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AEABI_FP_number_model_none = 0,
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AEABI_FP_number_model_ieee754_number = 1,
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AEABI_FP_number_model_rtabi = 2,
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AEABI_FP_number_model_ieee754_all = 3
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};
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|
||
// Values for Tag_ABI_VFP_args.
|
||
enum
|
||
{
|
||
AEABI_VFP_args_base = 0,
|
||
AEABI_VFP_args_vfp = 1,
|
||
AEABI_VFP_args_toolchain = 2,
|
||
AEABI_VFP_args_compatible = 3
|
||
};
|
||
|
||
// For Exception Index Table. (Exception handling ABI for the ARM
|
||
// architectue, Section 5)
|
||
enum
|
||
{
|
||
EXIDX_CANTUNWIND = 1,
|
||
};
|
||
|
||
} // End namespace elfcpp.
|
||
|
||
#endif // !defined(ELFCPP_ARM_H)
|