136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines//===-- MipsAsmBackend.cpp - Mips Asm Backend ----------------------------===// 247b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// 347b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// The LLVM Compiler Infrastructure 447b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// 547b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// This file is distributed under the University of Illinois Open Source 647b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// License. See LICENSE.TXT for details. 747b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// 847b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes//===----------------------------------------------------------------------===// 947b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// 1036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines// This file implements the MipsAsmBackend class. 1147b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// 1247b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes//===----------------------------------------------------------------------===// 1347b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes// 1447b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 1536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "MCTargetDesc/MipsFixupKinds.h" 1636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "MCTargetDesc/MipsAsmBackend.h" 1782ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "MCTargetDesc/MipsMCTargetDesc.h" 1847b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes#include "llvm/MC/MCAsmBackend.h" 1982ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/MC/MCAssembler.h" 2036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/MC/MCContext.h" 2182ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/MC/MCDirectives.h" 2282ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/MC/MCELFObjectWriter.h" 23f1d0f7781e766df878bec4e7977fa3204374f394Craig Topper#include "llvm/MC/MCFixupKindInfo.h" 2482ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/MC/MCObjectWriter.h" 2582ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/MC/MCSubtargetInfo.h" 2682ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/Support/ErrorHandling.h" 2736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/Support/MathExtras.h" 2882ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka#include "llvm/Support/raw_ostream.h" 29e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes 3082ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanakausing namespace llvm; 3182ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka 32e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes// Prepare value for the target space for it 3336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesstatic unsigned adjustFixupValue(const MCFixup &Fixup, uint64_t Value, 34dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines MCContext *Ctx = nullptr) { 3536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 3636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Kind = Fixup.getKind(); 3747b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 3847b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // Add/subtract and shift 3947b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes switch (Kind) { 4047b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes default: 41e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes return 0; 4236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case FK_Data_2: 43e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes case FK_GPRel_4: 44e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes case FK_Data_4: 45e2245bab3ca29dc2142d8f254005f4ae7c40cde2Jack Carter case FK_Data_8: 46e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes case Mips::fixup_Mips_LO16: 474a50e53e53816076584c957741cb430899271726Jack Carter case Mips::fixup_Mips_GPREL16: 480140e55393c4403ab240c386501cdc5e438dcc0eJack Carter case Mips::fixup_Mips_GPOFF_HI: 490140e55393c4403ab240c386501cdc5e438dcc0eJack Carter case Mips::fixup_Mips_GPOFF_LO: 500140e55393c4403ab240c386501cdc5e438dcc0eJack Carter case Mips::fixup_Mips_GOT_PAGE: 510140e55393c4403ab240c386501cdc5e438dcc0eJack Carter case Mips::fixup_Mips_GOT_OFST: 52fd506efec628819f7e6fad8016a9dbb5d8612b8bJack Carter case Mips::fixup_Mips_GOT_DISP: 53198ad916d736047f8a439f19dee25cee917df8a9Jack Carter case Mips::fixup_Mips_GOT_LO16: 54198ad916d736047f8a439f19dee25cee917df8a9Jack Carter case Mips::fixup_Mips_CALL_LO16: 550082717cb537e2d1424f755a49510fa9f9e67071Zoran Jovanovic case Mips::fixup_MICROMIPS_LO16: 560082717cb537e2d1424f755a49510fa9f9e67071Zoran Jovanovic case Mips::fixup_MICROMIPS_GOT_PAGE: 570082717cb537e2d1424f755a49510fa9f9e67071Zoran Jovanovic case Mips::fixup_MICROMIPS_GOT_OFST: 580082717cb537e2d1424f755a49510fa9f9e67071Zoran Jovanovic case Mips::fixup_MICROMIPS_GOT_DISP: 59dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines case Mips::fixup_MIPS_PCLO16: 6047b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes break; 6147b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes case Mips::fixup_Mips_PC16: 6247b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // So far we are only using this type for branches. 6347b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // For branches we start 1 instruction after the branch 6447b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // so the displacement will be one instruction size less. 6547b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes Value -= 4; 6647b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // The displacement is then divided by 4 to give us an 18 bit 6736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // address range. Forcing a signed division because Value can be negative. 6836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Value = (int64_t)Value / 4; 6936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // We now check if Value can be encoded as a 16-bit signed immediate. 7036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (!isIntN(16, Value) && Ctx) 7136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Ctx->FatalError(Fixup.getLoc(), "out of range PC16 fixup"); 7247b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes break; 73cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines case Mips::fixup_MIPS_PC19_S2: 74cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines // Forcing a signed division because Value can be negative. 75cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines Value = (int64_t)Value / 4; 76cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines // We now check if Value can be encoded as a 19-bit signed immediate. 77cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (!isIntN(19, Value) && Ctx) 78cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines Ctx->FatalError(Fixup.getLoc(), "out of range PC19 fixup"); 79cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines break; 8047b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes case Mips::fixup_Mips_26: 8147b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // So far we are only using this type for jumps. 8247b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // The displacement is then divided by 4 to give us an 28 bit 8347b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes // address range. 8447b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes Value >>= 2; 8547b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes break; 8684bfc2f090639f933df06cc675c4385511516befAkira Hatanaka case Mips::fixup_Mips_HI16: 87e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes case Mips::fixup_Mips_GOT_Local: 88198ad916d736047f8a439f19dee25cee917df8a9Jack Carter case Mips::fixup_Mips_GOT_HI16: 89198ad916d736047f8a439f19dee25cee917df8a9Jack Carter case Mips::fixup_Mips_CALL_HI16: 900082717cb537e2d1424f755a49510fa9f9e67071Zoran Jovanovic case Mips::fixup_MICROMIPS_HI16: 91dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines case Mips::fixup_MIPS_PCHI16: 92fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter // Get the 2nd 16-bits. Also add 1 if bit 15 is 1. 93bca9c25dabbf50923319339ae780d6f916f56bfbAkira Hatanaka Value = ((Value + 0x8000) >> 16) & 0xffff; 9484bfc2f090639f933df06cc675c4385511516befAkira Hatanaka break; 95fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter case Mips::fixup_Mips_HIGHER: 96fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter // Get the 3rd 16-bits. 97fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter Value = ((Value + 0x80008000LL) >> 32) & 0xffff; 98fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter break; 99fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter case Mips::fixup_Mips_HIGHEST: 100fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter // Get the 4th 16-bits. 101fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter Value = ((Value + 0x800080008000LL) >> 48) & 0xffff; 102fc54d9e47a1276650f14f38e7d037c9b58c8dc2dJack Carter break; 1031aaf43c2a2ec0fd4c8dbfe56558237219c5f8af7Zoran Jovanovic case Mips::fixup_MICROMIPS_26_S1: 1041aaf43c2a2ec0fd4c8dbfe56558237219c5f8af7Zoran Jovanovic Value >>= 1; 1051aaf43c2a2ec0fd4c8dbfe56558237219c5f8af7Zoran Jovanovic break; 1065c042162beb3c2dd556e00aab84c4278a69cd5b1Zoran Jovanovic case Mips::fixup_MICROMIPS_PC16_S1: 1075c042162beb3c2dd556e00aab84c4278a69cd5b1Zoran Jovanovic Value -= 4; 10836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Forcing a signed division because Value can be negative. 10936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Value = (int64_t)Value / 2; 11036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // We now check if Value can be encoded as a 16-bit signed immediate. 11136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (!isIntN(16, Value) && Ctx) 11236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Ctx->FatalError(Fixup.getLoc(), "out of range PC16 fixup"); 1135c042162beb3c2dd556e00aab84c4278a69cd5b1Zoran Jovanovic break; 114cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines case Mips::fixup_MIPS_PC18_S3: 115cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines // Forcing a signed division because Value can be negative. 116cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines Value = (int64_t)Value / 8; 117cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines // We now check if Value can be encoded as a 18-bit signed immediate. 118cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines if (!isIntN(18, Value) && Ctx) 119cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines Ctx->FatalError(Fixup.getLoc(), "out of range PC18 fixup"); 120cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines break; 121dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines case Mips::fixup_MIPS_PC21_S2: 122dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Value -= 4; 123dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // Forcing a signed division because Value can be negative. 124dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Value = (int64_t) Value / 4; 125dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // We now check if Value can be encoded as a 21-bit signed immediate. 126dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (!isIntN(21, Value) && Ctx) 127dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Ctx->FatalError(Fixup.getLoc(), "out of range PC21 fixup"); 128dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines break; 129dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines case Mips::fixup_MIPS_PC26_S2: 130dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Value -= 4; 131dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // Forcing a signed division because Value can be negative. 132dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Value = (int64_t) Value / 4; 133dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // We now check if Value can be encoded as a 26-bit signed immediate. 134dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (!isIntN(26, Value) && Ctx) 135dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Ctx->FatalError(Fixup.getLoc(), "out of range PC26 fixup"); 136dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines break; 13747b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes } 13847b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 13947b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes return Value; 14047b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes} 14147b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 14236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen HinesMCObjectWriter *MipsAsmBackend::createObjectWriter(raw_ostream &OS) const { 14336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return createMipsELFObjectWriter(OS, 14436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines MCELFObjectTargetWriter::getOSABI(OSType), IsLittle, Is64Bit); 14536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 146fb54afbcb8f460c5c4cafa605259ba0dd77504dcAkira Hatanaka 14736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines// Little-endian fixup data byte ordering: 14836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines// mips32r2: a | b | x | x 14936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines// microMIPS: x | x | a | b 150e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes 15136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesstatic bool needsMMLEByteOrder(unsigned Kind) { 15236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return Kind >= Mips::fixup_MICROMIPS_26_S1 && 15336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Kind < Mips::LastTargetFixupKind; 15436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 155e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes 15636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines// Calculate index for microMIPS specific little endian byte order 15736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesstatic unsigned calculateMMLEIndex(unsigned i) { 15836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines assert(i <= 3 && "Index out of range!"); 159fb54afbcb8f460c5c4cafa605259ba0dd77504dcAkira Hatanaka 16036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return (1 - i / 2) * 2 + i % 2; 16136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 162e3d3572e282733bd7aa5ac14115ed0804174e426Bruno Cardoso Lopes 16336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// ApplyFixup - Apply the \p Value for given \p Fixup into the provided 16436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// data fragment, at the offset specified by the fixup and following the 16536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// fixup kind as appropriate. 16636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesvoid MipsAsmBackend::applyFixup(const MCFixup &Fixup, char *Data, 16736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned DataSize, uint64_t Value, 16836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool IsPCRel) const { 16936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines MCFixupKind Kind = Fixup.getKind(); 17036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Value = adjustFixupValue(Fixup, Value); 17136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 17236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (!Value) 17336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return; // Doesn't change encoding. 17436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 17536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Where do we start in the object 17636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Offset = Fixup.getOffset(); 17736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Number of bytes we need to fixup 17836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned NumBytes = (getFixupKindInfo(Kind).TargetSize + 7) / 8; 17936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Used to point to big endian bytes 18036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned FullSize; 18136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 18236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines switch ((unsigned)Kind) { 18336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case FK_Data_2: 18436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case Mips::fixup_Mips_16: 18536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines FullSize = 2; 18636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines break; 18736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case FK_Data_8: 18836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case Mips::fixup_Mips_64: 18936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines FullSize = 8; 19036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines break; 19136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case FK_Data_4: 19236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines default: 19336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines FullSize = 4; 19436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines break; 195fb54afbcb8f460c5c4cafa605259ba0dd77504dcAkira Hatanaka } 19647b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 19736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Grab current value, if any, from bits. 19836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines uint64_t CurVal = 0; 19947b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 20036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool microMipsLEByteOrder = needsMMLEByteOrder((unsigned) Kind); 20147b92f3d8362518596d57269dc53d985bc13323aBruno Cardoso Lopes 20236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (unsigned i = 0; i != NumBytes; ++i) { 20336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Idx = IsLittle ? (microMipsLEByteOrder ? calculateMMLEIndex(i) 20436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines : i) 20536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines : (FullSize - 1 - i); 20636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines CurVal |= (uint64_t)((uint8_t)Data[Offset + Idx]) << (i*8); 2074b6ee7a35213709c057cdd073fb27bda09fa3359Akira Hatanaka } 2084b6ee7a35213709c057cdd073fb27bda09fa3359Akira Hatanaka 20936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines uint64_t Mask = ((uint64_t)(-1) >> 21036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines (64 - getFixupKindInfo(Kind).TargetSize)); 21136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines CurVal |= Value & Mask; 212370b78d795154899a22ca2b4674e890661ff1d59Jim Grosbach 21336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Write out the fixed up bytes back to the code/data bits. 21436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (unsigned i = 0; i != NumBytes; ++i) { 21536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Idx = IsLittle ? (microMipsLEByteOrder ? calculateMMLEIndex(i) 21636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines : i) 21736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines : (FullSize - 1 - i); 21836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Data[Offset + Idx] = (uint8_t)((CurVal >> (i*8)) & 0xff); 2194b6ee7a35213709c057cdd073fb27bda09fa3359Akira Hatanaka } 22036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 221bb481f882093fb738d2bb15610c79364bada5496Jia Liu 22236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesconst MCFixupKindInfo &MipsAsmBackend:: 22336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen HinesgetFixupKindInfo(MCFixupKind Kind) const { 224dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const static MCFixupKindInfo LittleEndianInfos[Mips::NumTargetFixupKinds] = { 22536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // This table *must* be in same the order of fixup_* kinds in 22636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // MipsFixupKinds.h. 22736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // 22836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // name offset bits flags 22936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_16", 0, 16, 0 }, 23036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_32", 0, 32, 0 }, 23136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_REL32", 0, 32, 0 }, 23236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_26", 0, 26, 0 }, 23336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_HI16", 0, 16, 0 }, 23436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_LO16", 0, 16, 0 }, 23536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GPREL16", 0, 16, 0 }, 23636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_LITERAL", 0, 16, 0 }, 23736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_Global", 0, 16, 0 }, 23836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_Local", 0, 16, 0 }, 23936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_PC16", 0, 16, MCFixupKindInfo::FKF_IsPCRel }, 24036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_CALL16", 0, 16, 0 }, 24136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GPREL32", 0, 32, 0 }, 24236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_SHIFT5", 6, 5, 0 }, 24336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_SHIFT6", 6, 5, 0 }, 24436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_64", 0, 64, 0 }, 24536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_TLSGD", 0, 16, 0 }, 24636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOTTPREL", 0, 16, 0 }, 24736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_TPREL_HI", 0, 16, 0 }, 24836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_TPREL_LO", 0, 16, 0 }, 24936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_TLSLDM", 0, 16, 0 }, 25036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_DTPREL_HI", 0, 16, 0 }, 25136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_DTPREL_LO", 0, 16, 0 }, 25236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_Branch_PCRel", 0, 16, MCFixupKindInfo::FKF_IsPCRel }, 25336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GPOFF_HI", 0, 16, 0 }, 25436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GPOFF_LO", 0, 16, 0 }, 25536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_PAGE", 0, 16, 0 }, 25636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_OFST", 0, 16, 0 }, 25736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_DISP", 0, 16, 0 }, 25836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_HIGHER", 0, 16, 0 }, 25936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_HIGHEST", 0, 16, 0 }, 26036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_HI16", 0, 16, 0 }, 26136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_GOT_LO16", 0, 16, 0 }, 26236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_CALL_HI16", 0, 16, 0 }, 26336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_Mips_CALL_LO16", 0, 16, 0 }, 264cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines { "fixup_Mips_PC18_S3", 0, 18, MCFixupKindInfo::FKF_IsPCRel }, 265cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines { "fixup_MIPS_PC19_S2", 0, 19, MCFixupKindInfo::FKF_IsPCRel }, 266dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PC21_S2", 0, 21, MCFixupKindInfo::FKF_IsPCRel }, 267dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PC26_S2", 0, 26, MCFixupKindInfo::FKF_IsPCRel }, 268dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PCHI16", 0, 16, MCFixupKindInfo::FKF_IsPCRel }, 269dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PCLO16", 0, 16, MCFixupKindInfo::FKF_IsPCRel }, 27036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_26_S1", 0, 26, 0 }, 27136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_HI16", 0, 16, 0 }, 27236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_LO16", 0, 16, 0 }, 27336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_GOT16", 0, 16, 0 }, 27436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_PC16_S1", 0, 16, MCFixupKindInfo::FKF_IsPCRel }, 27536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_CALL16", 0, 16, 0 }, 27636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_GOT_DISP", 0, 16, 0 }, 27736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_GOT_PAGE", 0, 16, 0 }, 27836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_GOT_OFST", 0, 16, 0 }, 27936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_TLS_GD", 0, 16, 0 }, 28036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_TLS_LDM", 0, 16, 0 }, 28136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_TLS_DTPREL_HI16", 0, 16, 0 }, 28236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_TLS_DTPREL_LO16", 0, 16, 0 }, 28336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_TLS_TPREL_HI16", 0, 16, 0 }, 28436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines { "fixup_MICROMIPS_TLS_TPREL_LO16", 0, 16, 0 } 28536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines }; 28636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 287dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const static MCFixupKindInfo BigEndianInfos[Mips::NumTargetFixupKinds] = { 288dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // This table *must* be in same the order of fixup_* kinds in 289dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // MipsFixupKinds.h. 290dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // 291dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines // name offset bits flags 292dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_16", 16, 16, 0 }, 293dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_32", 0, 32, 0 }, 294dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_REL32", 0, 32, 0 }, 295dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_26", 6, 26, 0 }, 296dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_HI16", 16, 16, 0 }, 297dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_LO16", 16, 16, 0 }, 298dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GPREL16", 16, 16, 0 }, 299dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_LITERAL", 16, 16, 0 }, 300dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_Global", 16, 16, 0 }, 301dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_Local", 16, 16, 0 }, 302dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_PC16", 16, 16, MCFixupKindInfo::FKF_IsPCRel }, 303dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_CALL16", 16, 16, 0 }, 304dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GPREL32", 0, 32, 0 }, 305dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_SHIFT5", 21, 5, 0 }, 306dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_SHIFT6", 21, 5, 0 }, 307dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_64", 0, 64, 0 }, 308dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_TLSGD", 16, 16, 0 }, 309dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOTTPREL", 16, 16, 0 }, 310dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_TPREL_HI", 16, 16, 0 }, 311dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_TPREL_LO", 16, 16, 0 }, 312dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_TLSLDM", 16, 16, 0 }, 313dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_DTPREL_HI", 16, 16, 0 }, 314dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_DTPREL_LO", 16, 16, 0 }, 315dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_Branch_PCRel",16, 16, MCFixupKindInfo::FKF_IsPCRel }, 316dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GPOFF_HI", 16, 16, 0 }, 317dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GPOFF_LO", 16, 16, 0 }, 318dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_PAGE", 16, 16, 0 }, 319dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_OFST", 16, 16, 0 }, 320dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_DISP", 16, 16, 0 }, 321dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_HIGHER", 16, 16, 0 }, 322dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_HIGHEST", 16, 16, 0 }, 323dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_HI16", 16, 16, 0 }, 324dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_GOT_LO16", 16, 16, 0 }, 325dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_CALL_HI16", 16, 16, 0 }, 326dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_Mips_CALL_LO16", 16, 16, 0 }, 327cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines { "fixup_Mips_PC18_S3", 14, 18, MCFixupKindInfo::FKF_IsPCRel }, 328cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines { "fixup_MIPS_PC19_S2", 13, 19, MCFixupKindInfo::FKF_IsPCRel }, 329dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PC21_S2", 11, 21, MCFixupKindInfo::FKF_IsPCRel }, 330dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PC26_S2", 6, 26, MCFixupKindInfo::FKF_IsPCRel }, 331dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PCHI16", 16, 16, MCFixupKindInfo::FKF_IsPCRel }, 332dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MIPS_PCLO16", 16, 16, MCFixupKindInfo::FKF_IsPCRel }, 333dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_26_S1", 6, 26, 0 }, 334dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_HI16", 16, 16, 0 }, 335dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_LO16", 16, 16, 0 }, 336dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_GOT16", 16, 16, 0 }, 337dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_PC16_S1",16, 16, MCFixupKindInfo::FKF_IsPCRel }, 338dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_CALL16", 16, 16, 0 }, 339dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_GOT_DISP", 16, 16, 0 }, 340dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_GOT_PAGE", 16, 16, 0 }, 341dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_GOT_OFST", 16, 16, 0 }, 342dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_TLS_GD", 16, 16, 0 }, 343dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_TLS_LDM", 16, 16, 0 }, 344dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_TLS_DTPREL_HI16", 16, 16, 0 }, 345dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_TLS_DTPREL_LO16", 16, 16, 0 }, 346dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_TLS_TPREL_HI16", 16, 16, 0 }, 347dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines { "fixup_MICROMIPS_TLS_TPREL_LO16", 16, 16, 0 } 348dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines }; 349dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines 35036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (Kind < FirstTargetFixupKind) 35136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return MCAsmBackend::getFixupKindInfo(Kind); 35236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 35336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines assert(unsigned(Kind - FirstTargetFixupKind) < getNumFixupKinds() && 35436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines "Invalid kind!"); 355dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines 356dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (IsLittle) 357dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return LittleEndianInfos[Kind - FirstTargetFixupKind]; 358dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return BigEndianInfos[Kind - FirstTargetFixupKind]; 35936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 3601d82115042c81793cc3d807a8136f7f0f475f083Jack Carter 36136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// WriteNopData - Write an (optimal) nop sequence of Count bytes 36236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// to the given output. If the target cannot generate such a sequence, 36336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// it should return an error. 36436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// 36536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// \return - True on success. 36636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesbool MipsAsmBackend::writeNopData(uint64_t Count, MCObjectWriter *OW) const { 36736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // Check for a less than instruction size number of bytes 36836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // FIXME: 16 bit instructions are not handled yet here. 36936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // We shouldn't be using a hard coded number for instruction size. 37036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (Count % 4) return false; 37136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 37236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines uint64_t NumNops = Count / 4; 37336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines for (uint64_t i = 0; i != NumNops; ++i) 37436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines OW->Write32(0); 37536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return true; 37636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 37782ea7314ca52c9df8e1b6600231fafb7ae722313Akira Hatanaka 37836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// processFixupValue - Target hook to process the literal value of a fixup 37936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines/// if necessary. 38036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hinesvoid MipsAsmBackend::processFixupValue(const MCAssembler &Asm, 38136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const MCAsmLayout &Layout, 38236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const MCFixup &Fixup, 38336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const MCFragment *DF, 38436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const MCValue &Target, 38536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines uint64_t &Value, 38636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool &IsResolved) { 38736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // At this point we'll ignore the value returned by adjustFixupValue as 38836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // we are only checking if the fixup can be applied correctly. We have 38936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // access to MCContext from here which allows us to report a fatal error 39036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // with *possibly* a source code location. 39136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines (void)adjustFixupValue(Fixup, Value, &Asm.getContext()); 39236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines} 3934b6ee7a35213709c057cdd073fb27bda09fa3359Akira Hatanaka 394e9e520f23ec3e5dc26e0801ac0d8b9e6899e2626Akira Hatanaka// MCAsmBackend 395c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill WendlingMCAsmBackend *llvm::createMipsAsmBackendEL32(const Target &T, 396c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling const MCRegisterInfo &MRI, 397c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling StringRef TT, 398536a88ad5bf160232205192a7ce72e50bfadbdedRoman Divacky StringRef CPU) { 399e9e520f23ec3e5dc26e0801ac0d8b9e6899e2626Akira Hatanaka return new MipsAsmBackend(T, Triple(TT).getOS(), 400a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka /*IsLittle*/true, /*Is64Bit*/false); 40129a17145ad4985df032785cc1b4716fd7875d47bRafael Espindola} 4024b6ee7a35213709c057cdd073fb27bda09fa3359Akira Hatanaka 403c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill WendlingMCAsmBackend *llvm::createMipsAsmBackendEB32(const Target &T, 404c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling const MCRegisterInfo &MRI, 405c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling StringRef TT, 406536a88ad5bf160232205192a7ce72e50bfadbdedRoman Divacky StringRef CPU) { 407e9e520f23ec3e5dc26e0801ac0d8b9e6899e2626Akira Hatanaka return new MipsAsmBackend(T, Triple(TT).getOS(), 408a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka /*IsLittle*/false, /*Is64Bit*/false); 4094b6ee7a35213709c057cdd073fb27bda09fa3359Akira Hatanaka} 410a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka 411c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill WendlingMCAsmBackend *llvm::createMipsAsmBackendEL64(const Target &T, 412c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling const MCRegisterInfo &MRI, 413c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling StringRef TT, 414536a88ad5bf160232205192a7ce72e50bfadbdedRoman Divacky StringRef CPU) { 415a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka return new MipsAsmBackend(T, Triple(TT).getOS(), 416a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka /*IsLittle*/true, /*Is64Bit*/true); 417a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka} 418a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka 419c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill WendlingMCAsmBackend *llvm::createMipsAsmBackendEB64(const Target &T, 420c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling const MCRegisterInfo &MRI, 421c3cee57f7d20f69a84fd88464ed8cf050e63c7adBill Wendling StringRef TT, 422536a88ad5bf160232205192a7ce72e50bfadbdedRoman Divacky StringRef CPU) { 423a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka return new MipsAsmBackend(T, Triple(TT).getOS(), 424a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka /*IsLittle*/false, /*Is64Bit*/true); 425a551a48402385cf3f4b754dc72264b2f0974b1a6Akira Hatanaka} 426