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llvm-project/llvm/lib/Target/ARM/ARMELFWriterInfo.h

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//===-- ARMELFWriterInfo.h - ELF Writer Info for ARM ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements ELF writer information for the ARM backend.
//
//===----------------------------------------------------------------------===//
#ifndef ARM_ELF_WRITER_INFO_H
#define ARM_ELF_WRITER_INFO_H
#include "llvm/Target/TargetELFWriterInfo.h"
namespace llvm {
class ARMELFWriterInfo : public TargetELFWriterInfo {
// ELF Relocation types for ARM
// Meets 2.08 ABI Specs. Most of these are not used by the assembler.
// They are here for completeness's sake
enum ARMRelocationType {
R_ARM_NONE = 0x00,
R_ARM_PC24 = 0x01,
R_ARM_ABS32 = 0x02,
R_ARM_REL32 = 0x03,
R_ARM_LDR_PC_G0 = 0x04,
R_ARM_ABS16 = 0x05,
R_ARM_ABS12 = 0x06,
R_ARM_THM_ABS5 = 0x07,
R_ARM_ABS8 = 0x08,
R_ARM_SBREL32 = 0x09,
R_ARM_THM_CALL = 0x0a,
R_ARM_THM_PC8 = 0x0b,
R_ARM_BREL_ADJ = 0x0c,
R_ARM_TLS_DESC = 0x0d,
R_ARM_THM_SWI8 = 0x0e,
R_ARM_XPC25 = 0x0f,
R_ARM_THM_XPC22 = 0x10,
R_ARM_TLS_DTPMOD32 = 0x11,
R_ARM_TLS_DTPOFF32 = 0x12,
R_ARM_TLS_TPOFF32 = 0x13,
R_ARM_COPY = 0x14,
R_ARM_GLOB_DAT = 0x15,
R_ARM_JUMP_SLOT = 0x16,
R_ARM_RELATIVE = 0x17,
R_ARM_GOTOFF32 = 0x18,
R_ARM_BASE_PREL = 0x19,
R_ARM_GOT_BREL = 0x1a,
R_ARM_PLT32 = 0x1b,
R_ARM_CALL = 0x1c,
R_ARM_JUMP24 = 0x1d,
R_ARM_THM_JUMP24 = 0x1e,
R_ARM_BASE_ABS = 0x1f,
R_ARM_ALU_PCREL_7_0 = 0x20,
R_ARM_ALU_PCREL_15_8 = 0x21,
R_ARM_ALU_PCREL_23_15 = 0x22,
R_ARM_LDR_SBREL_11_0_NC = 0x23,
R_ARM_ALU_SBREL_19_12_NC = 0x24,
R_ARM_ALU_SBREL_27_20_CK = 0x25,
R_ARM_TARGET1 = 0x26,
R_ARM_SBREL31 = 0x27,
R_ARM_V4BX = 0x28,
R_ARM_TARGET2 = 0x29,
R_ARM_PREL31 = 0x2a,
R_ARM_MOVW_ABS_NC = 0x2b,
R_ARM_MOVT_ABS = 0x2c,
R_ARM_MOVW_PREL_NC = 0x2d,
R_ARM_MOVT_PREL = 0x2e,
R_ARM_THM_MOVW_ABS_NC = 0x2f,
R_ARM_THM_MOVT_ABS = 0x30,
R_ARM_THM_MOVW_PREL_NC = 0x31,
R_ARM_THM_MOVT_PREL = 0x32,
R_ARM_THM_JUMP19 = 0x33,
R_ARM_THM_JUMP6 = 0x34,
R_ARM_THM_ALU_PREL_11_0 = 0x35,
R_ARM_THM_PC12 = 0x36,
R_ARM_ABS32_NOI = 0x37,
R_ARM_REL32_NOI = 0x38,
R_ARM_ALU_PC_G0_NC = 0x39,
R_ARM_ALU_PC_G0 = 0x3a,
R_ARM_ALU_PC_G1_NC = 0x3b,
R_ARM_ALU_PC_G1 = 0x3c,
R_ARM_ALU_PC_G2 = 0x3d,
R_ARM_LDR_PC_G1 = 0x3e,
R_ARM_LDR_PC_G2 = 0x3f,
R_ARM_LDRS_PC_G0 = 0x40,
R_ARM_LDRS_PC_G1 = 0x41,
R_ARM_LDRS_PC_G2 = 0x42,
R_ARM_LDC_PC_G0 = 0x43,
R_ARM_LDC_PC_G1 = 0x44,
R_ARM_LDC_PC_G2 = 0x45,
R_ARM_ALU_SB_G0_NC = 0x46,
R_ARM_ALU_SB_G0 = 0x47,
R_ARM_ALU_SB_G1_NC = 0x48,
R_ARM_ALU_SB_G1 = 0x49,
R_ARM_ALU_SB_G2 = 0x4a,
R_ARM_LDR_SB_G0 = 0x4b,
R_ARM_LDR_SB_G1 = 0x4c,
R_ARM_LDR_SB_G2 = 0x4d,
R_ARM_LDRS_SB_G0 = 0x4e,
R_ARM_LDRS_SB_G1 = 0x4f,
R_ARM_LDRS_SB_G2 = 0x50,
R_ARM_LDC_SB_G0 = 0x51,
R_ARM_LDC_SB_G1 = 0x52,
R_ARM_LDC_SB_G2 = 0x53,
R_ARM_MOVW_BREL_NC = 0x54,
R_ARM_MOVT_BREL = 0x55,
R_ARM_MOVW_BREL = 0x56,
R_ARM_THM_MOVW_BREL_NC = 0x57,
R_ARM_THM_MOVT_BREL = 0x58,
R_ARM_THM_MOVW_BREL = 0x59,
R_ARM_TLS_GOTDESC = 0x5a,
R_ARM_TLS_CALL = 0x5b,
R_ARM_TLS_DESCSEQ = 0x5c,
R_ARM_THM_TLS_CALL = 0x5d,
R_ARM_PLT32_ABS = 0x5e,
R_ARM_GOT_ABS = 0x5f,
R_ARM_GOT_PREL = 0x60,
R_ARM_GOT_BREL12 = 0x61,
R_ARM_GOTOFF12 = 0x62,
R_ARM_GOTRELAX = 0x63,
R_ARM_GNU_VTENTRY = 0x64,
R_ARM_GNU_VTINHERIT = 0x65,
R_ARM_THM_JUMP11 = 0x66,
R_ARM_THM_JUMP8 = 0x67,
R_ARM_TLS_GD32 = 0x68,
R_ARM_TLS_LDM32 = 0x69,
R_ARM_TLS_LDO32 = 0x6a,
R_ARM_TLS_IE32 = 0x6b,
R_ARM_TLS_LE32 = 0x6c,
R_ARM_TLS_LDO12 = 0x6d,
R_ARM_TLS_LE12 = 0x6e,
R_ARM_TLS_IE12GP = 0x6f,
R_ARM_PRIVATE_0 = 0x70,
R_ARM_PRIVATE_1 = 0x71,
R_ARM_PRIVATE_2 = 0x72,
R_ARM_PRIVATE_3 = 0x73,
R_ARM_PRIVATE_4 = 0x74,
R_ARM_PRIVATE_5 = 0x75,
R_ARM_PRIVATE_6 = 0x76,
R_ARM_PRIVATE_7 = 0x77,
R_ARM_PRIVATE_8 = 0x78,
R_ARM_PRIVATE_9 = 0x79,
R_ARM_PRIVATE_10 = 0x7a,
R_ARM_PRIVATE_11 = 0x7b,
R_ARM_PRIVATE_12 = 0x7c,
R_ARM_PRIVATE_13 = 0x7d,
R_ARM_PRIVATE_14 = 0x7e,
R_ARM_PRIVATE_15 = 0x7f,
R_ARM_ME_TOO = 0x80,
R_ARM_THM_TLS_DESCSEQ16 = 0x81,
R_ARM_THM_TLS_DESCSEQ32 = 0x82
};
public:
ARMELFWriterInfo(TargetMachine &TM);
virtual ~ARMELFWriterInfo();
/// getRelocationType - Returns the target specific ELF Relocation type.
/// 'MachineRelTy' contains the object code independent relocation type
virtual unsigned getRelocationType(unsigned MachineRelTy) const;
/// hasRelocationAddend - True if the target uses an addend in the
/// ELF relocation entry.
virtual bool hasRelocationAddend() const { return false; }
/// getDefaultAddendForRelTy - Gets the default addend value for a
/// relocation entry based on the target ELF relocation type.
virtual long int getDefaultAddendForRelTy(unsigned RelTy,
long int Modifier = 0) const;
/// getRelTySize - Returns the size of relocatable field in bits
virtual unsigned getRelocationTySize(unsigned RelTy) const;
/// isPCRelativeRel - True if the relocation type is pc relative
virtual bool isPCRelativeRel(unsigned RelTy) const;
/// getJumpTableRelocationTy - Returns the machine relocation type used
/// to reference a jumptable.
virtual unsigned getAbsoluteLabelMachineRelTy() const;
/// computeRelocation - Some relocatable fields could be relocated
/// directly, avoiding the relocation symbol emission, compute the
/// final relocation value for this symbol.
virtual long int computeRelocation(unsigned SymOffset, unsigned RelOffset,
unsigned RelTy) const;
};
} // end llvm namespace
#endif // ARM_ELF_WRITER_INFO_H
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