MCAssembler.cpp revision 9799de910e97879bf9f30f359551071a94d61570
1fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar//===- lib/MC/MCAssembler.cpp - Assembler Backend Implementation ----------===// 2fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// 3fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// The LLVM Compiler Infrastructure 4fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// 5fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// This file is distributed under the University of Illinois Open Source 6fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// License. See LICENSE.TXT for details. 7fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar// 8fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar//===----------------------------------------------------------------------===// 9fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 100adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar#define DEBUG_TYPE "assembler" 11fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/MC/MCAssembler.h" 1218ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar#include "llvm/MC/MCAsmLayout.h" 13b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar#include "llvm/MC/MCCodeEmitter.h" 141253a6fa3b0d79dc6ea25f2578f6473219d40047Daniel Dunbar#include "llvm/MC/MCExpr.h" 1553b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar#include "llvm/MC/MCObjectWriter.h" 161253a6fa3b0d79dc6ea25f2578f6473219d40047Daniel Dunbar#include "llvm/MC/MCSymbol.h" 171253a6fa3b0d79dc6ea25f2578f6473219d40047Daniel Dunbar#include "llvm/MC/MCValue.h" 181a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar#include "llvm/ADT/OwningPtr.h" 190adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar#include "llvm/ADT/Statistic.h" 20b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar#include "llvm/ADT/StringExtras.h" 21d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar#include "llvm/ADT/Twine.h" 220705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar#include "llvm/Support/ErrorHandling.h" 23fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar#include "llvm/Support/raw_ostream.h" 24b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar#include "llvm/Support/Debug.h" 25ee0d89245eabf93d89b5fef7ac8707680796826dDaniel Dunbar#include "llvm/Target/TargetRegistry.h" 26df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar#include "llvm/Target/TargetAsmBackend.h" 27f6346769b344f9b134f0661e8bd2b4245f6490eaDaniel Dunbar 28f6346769b344f9b134f0661e8bd2b4245f6490eaDaniel Dunbar// FIXME: Gross. 29f6346769b344f9b134f0661e8bd2b4245f6490eaDaniel Dunbar#include "../Target/X86/X86FixupKinds.h" 30f6346769b344f9b134f0661e8bd2b4245f6490eaDaniel Dunbar 3123132b188ba651ba172380cd082cc286df73d440Chris Lattner#include <vector> 32fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarusing namespace llvm; 33fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 340adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel DunbarSTATISTIC(EmittedFragments, "Number of emitted assembler fragments"); 350adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar 368f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// FIXME FIXME FIXME: There are number of places in this file where we convert 378f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// what is a 64-bit assembler value used for computation into a value in the 388f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// object file, which may truncate it. We should detect that truncation where 398f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// invalid and report errors back. 408f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar 41fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar/* *** */ 42fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 430705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel DunbarMCFragment::MCFragment() : Kind(FragmentType(~0)) { 440705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 450705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 465e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel DunbarMCFragment::MCFragment(FragmentType _Kind, MCSectionData *_Parent) 470705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar : Kind(_Kind), 485e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar Parent(_Parent), 490705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar FileSize(~UINT64_C(0)) 50fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar{ 515e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar if (Parent) 525e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar Parent->getFragmentList().push_back(this); 53fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 54fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 550705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel DunbarMCFragment::~MCFragment() { 560705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 570705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 585e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbaruint64_t MCFragment::getAddress() const { 595e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar assert(getParent() && "Missing Section!"); 605e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar return getParent()->getAddress() + Offset; 615e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar} 625e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar 63fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar/* *** */ 64fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 6581e400092f55c2eba157172bfc0dd0df8317638dDaniel DunbarMCSectionData::MCSectionData() : Section(0) {} 66fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 67fb4a6b397665df011348ade24a8e38d2219f095aDaniel DunbarMCSectionData::MCSectionData(const MCSection &_Section, MCAssembler *A) 6881e400092f55c2eba157172bfc0dd0df8317638dDaniel Dunbar : Section(&_Section), 69fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar Alignment(1), 705e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar Address(~UINT64_C(0)), 716742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Size(~UINT64_C(0)), 723f6a960f9c9ad27f2ac573020df414e8b8cdda04Daniel Dunbar FileSize(~UINT64_C(0)), 73e1ec617c6abf0b9dc1eecbbfe483bda3bb2b7795Daniel Dunbar HasInstructions(false) 74fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar{ 75fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar if (A) 76fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar A->getSectionList().push_back(this); 77fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 78fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 79fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar/* *** */ 80fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 81efbb5330b8d383a393c83d2da5d631c98b0bb3fdDaniel DunbarMCSymbolData::MCSymbolData() : Symbol(0) {} 82f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar 83cb579b3338fe8d9e4424b138f597a4696cb89de3Daniel DunbarMCSymbolData::MCSymbolData(const MCSymbol &_Symbol, MCFragment *_Fragment, 84f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar uint64_t _Offset, MCAssembler *A) 85efbb5330b8d383a393c83d2da5d631c98b0bb3fdDaniel Dunbar : Symbol(&_Symbol), Fragment(_Fragment), Offset(_Offset), 868f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar IsExternal(false), IsPrivateExtern(false), 878f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar CommonSize(0), CommonAlign(0), Flags(0), Index(0) 88f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar{ 89f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar if (A) 90f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar A->getSymbolList().push_back(this); 91f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar} 92f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar 93f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar/* *** */ 94f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar 951f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel DunbarMCAssembler::MCAssembler(MCContext &_Context, TargetAsmBackend &_Backend, 96cf871e5abff63a53f9e97ff9e37fb7297d0cb847Daniel Dunbar MCCodeEmitter &_Emitter, raw_ostream &_OS) 97cf871e5abff63a53f9e97ff9e37fb7297d0cb847Daniel Dunbar : Context(_Context), Backend(_Backend), Emitter(_Emitter), 98cf871e5abff63a53f9e97ff9e37fb7297d0cb847Daniel Dunbar OS(_OS), SubsectionsViaSymbols(false) 996009db486e7fba448ccb28dff676c012efade8f0Daniel Dunbar{ 1006009db486e7fba448ccb28dff676c012efade8f0Daniel Dunbar} 101fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 102fb4a6b397665df011348ade24a8e38d2219f095aDaniel DunbarMCAssembler::~MCAssembler() { 103fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 104fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 105939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbarstatic bool isScatteredFixupFullyResolvedSimple(const MCAssembler &Asm, 106939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCAsmFixup &Fixup, 107939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCValue Target, 108939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCSection *BaseSection) { 109939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // The effective fixup address is 110939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // addr(atom(A)) + offset(A) 111939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // - addr(atom(B)) - offset(B) 112939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // - addr(<base symbol>) + <fixup offset from base symbol> 113939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // and the offsets are not relocatable, so the fixup is fully resolved when 114939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // addr(atom(A)) - addr(atom(B)) - addr(<base symbol>)) == 0. 115939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // 116939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // The simple (Darwin, except on x86_64) way of dealing with this was to 117939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // assume that any reference to a temporary symbol *must* be a temporary 118939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // symbol in the same atom, unless the sections differ. Therefore, any PCrel 119939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // relocation to a temporary symbol (in the same section) is fully 120939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // resolved. This also works in conjunction with absolutized .set, which 121939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // requires the compiler to use .set to absolutize the differences between 122939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // symbols which the compiler knows to be assembly time constants, so we don't 123939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // need to worry about consider symbol differences fully resolved. 124939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 125939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // Non-relative fixups are only resolved if constant. 126939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (!BaseSection) 127939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return Target.isAbsolute(); 128939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 129939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // Otherwise, relative fixups are only resolved if not a difference and the 130939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // target is a temporary in the same section. 131939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (Target.isAbsolute() || Target.getSymB()) 132939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return false; 133939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 134939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCSymbol *A = &Target.getSymA()->getSymbol(); 135939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (!A->isTemporary() || !A->isInSection() || 136939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar &A->getSection() != BaseSection) 137939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return false; 138939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 139939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return true; 140939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar} 141939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 142034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbarstatic bool isScatteredFixupFullyResolved(const MCAssembler &Asm, 143034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCAsmFixup &Fixup, 144034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCValue Target, 145034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCSymbolData *BaseSymbol) { 146034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // The effective fixup address is 147034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // addr(atom(A)) + offset(A) 148034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // - addr(atom(B)) - offset(B) 149034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // - addr(BaseSymbol) + <fixup offset from base symbol> 150034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // and the offsets are not relocatable, so the fixup is fully resolved when 151034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // addr(atom(A)) - addr(atom(B)) - addr(BaseSymbol) == 0. 152034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // 153034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Note that "false" is almost always conservatively correct (it means we emit 154034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // a relocation which is unnecessary), except when it would force us to emit a 155034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // relocation which the target cannot encode. 156034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 157034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCSymbolData *A_Base = 0, *B_Base = 0; 158034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (const MCSymbolRefExpr *A = Target.getSymA()) { 159034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Modified symbol references cannot be resolved. 160034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (A->getKind() != MCSymbolRefExpr::VK_None) 161034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 162034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 163034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar A_Base = Asm.getAtom(&Asm.getSymbolData(A->getSymbol())); 164034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!A_Base) 165034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 166034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar } 167034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 168034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (const MCSymbolRefExpr *B = Target.getSymB()) { 169034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Modified symbol references cannot be resolved. 170034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (B->getKind() != MCSymbolRefExpr::VK_None) 171034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 172034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 173034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar B_Base = Asm.getAtom(&Asm.getSymbolData(B->getSymbol())); 174034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!B_Base) 175034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 176034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar } 177034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 178034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // If there is no base, A and B have to be the same atom for this fixup to be 179034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // fully resolved. 180034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!BaseSymbol) 181034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return A_Base == B_Base; 182034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 183034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Otherwise, B must be missing and A must be the base. 184034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return !B_Base && BaseSymbol == A_Base; 185034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar} 186034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 187238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbarbool MCAssembler::isSymbolLinkerVisible(const MCSymbolData *SD) const { 188238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar // Non-temporary labels should always be visible to the linker. 189238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar if (!SD->getSymbol().isTemporary()) 190238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar return true; 191238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar 192238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar // Absolute temporary labels are never visible. 193238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar if (!SD->getFragment()) 194238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar return false; 195238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar 196238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar // Otherwise, check if the section requires symbols even for temporary labels. 197238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar return getBackend().doesSectionRequireSymbols( 198238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar SD->getFragment()->getParent()->getSection()); 199238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar} 200238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar 2018ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbarconst MCSymbolData *MCAssembler::getAtomForAddress(const MCSectionData *Section, 2028ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar uint64_t Address) const { 2038ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar const MCSymbolData *Best = 0; 2048ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar for (MCAssembler::const_symbol_iterator it = symbol_begin(), 2058ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar ie = symbol_end(); it != ie; ++it) { 2068ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Ignore non-linker visible symbols. 2078ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (!isSymbolLinkerVisible(it)) 2088ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar continue; 2098ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2108ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Ignore symbols not in the same section. 2118ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (!it->getFragment() || it->getFragment()->getParent() != Section) 2128ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar continue; 2138ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2148ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Otherwise, find the closest symbol preceding this address (ties are 2158ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // resolved in favor of the last defined symbol). 2168ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (it->getAddress() <= Address && 2178ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar (!Best || it->getAddress() >= Best->getAddress())) 2188ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar Best = it; 2198ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar } 2208ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2218ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return Best; 2228ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar} 2238ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2248ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbarconst MCSymbolData *MCAssembler::getAtom(const MCSymbolData *SD) const { 2258ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Linker visible symbols define atoms. 2268ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (isSymbolLinkerVisible(SD)) 2278ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return SD; 2288ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2298ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Absolute and undefined symbols have no defining atom. 2308ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (!SD->getFragment()) 2318ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return 0; 2328ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2338ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Otherwise, search by address. 2348ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return getAtomForAddress(SD->getFragment()->getParent(), SD->getAddress()); 2358ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar} 2368ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2379d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbarbool MCAssembler::EvaluateFixup(const MCAsmLayout &Layout, 2389d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbar const MCAsmFixup &Fixup, const MCFragment *DF, 239df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar MCValue &Target, uint64_t &Value) const { 240df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar if (!Fixup.Value->EvaluateAsRelocatable(Target, &Layout)) 241df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar llvm_report_error("expected relocatable expression"); 242df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 243df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar // FIXME: How do non-scattered symbols work in ELF? I presume the linker 244df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar // doesn't support small relocations, but then under what criteria does the 245df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar // assembler allow symbol differences? 246df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 247df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar Value = Target.getConstant(); 248df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 249b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar bool IsPCRel = 250b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar Emitter.getFixupKindInfo(Fixup.Kind).Flags & MCFixupKindInfo::FKF_IsPCRel; 251b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar bool IsResolved = true; 2529a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (const MCSymbolRefExpr *A = Target.getSymA()) { 2539a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (A->getSymbol().isDefined()) 2549a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar Value += getSymbolData(A->getSymbol()).getAddress(); 255df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar else 256df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar IsResolved = false; 257df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar } 2589a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (const MCSymbolRefExpr *B = Target.getSymB()) { 2599a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (B->getSymbol().isDefined()) 2609a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar Value -= getSymbolData(B->getSymbol()).getAddress(); 261df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar else 262df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar IsResolved = false; 263939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar } 264df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 265939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // If we are using scattered symbols, determine whether this value is actually 266939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // resolved; scattering may cause atoms to move. 267939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (IsResolved && getBackend().hasScatteredSymbols()) { 268939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (getBackend().hasReliableSymbolDifference()) { 269034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // If this is a PCrel relocation, find the base atom (identified by its 270034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // symbol) that the fixup value is relative to. 271034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCSymbolData *BaseSymbol = 0; 272034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (IsPCRel) { 273034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar BaseSymbol = getAtomForAddress( 274034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar DF->getParent(), DF->getAddress() + Fixup.Offset); 275034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!BaseSymbol) 276034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar IsResolved = false; 277034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar } 278034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 279034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (IsResolved) 280c6f598209a6ffc1e5273d867c7fd545359c4f209Daniel Dunbar IsResolved = isScatteredFixupFullyResolved(*this, Fixup, Target, 281034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar BaseSymbol); 282939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar } else { 283939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCSection *BaseSection = 0; 284939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (IsPCRel) 285939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar BaseSection = &DF->getParent()->getSection(); 286939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 287c6f598209a6ffc1e5273d867c7fd545359c4f209Daniel Dunbar IsResolved = isScatteredFixupFullyResolvedSimple(*this, Fixup, Target, 288939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar BaseSection); 289939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar } 290df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar } 291df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 292df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar if (IsPCRel) 293da3e9f760ce2328f6dfe69663c2b17da02ece2dbDaniel Dunbar Value -= DF->getAddress() + Fixup.Offset; 294df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 295df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar return IsResolved; 296df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar} 297df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 2988d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbarvoid MCAssembler::LayoutSection(MCSectionData &SD, 2998d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar MCAsmLayout &Layout) { 3006742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar uint64_t Address = SD.getAddress(); 3010705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 3020705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar for (MCSectionData::iterator it = SD.begin(), ie = SD.end(); it != ie; ++it) { 3030705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar MCFragment &F = *it; 304d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 3056742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar F.setOffset(Address - SD.getAddress()); 306d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 307d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // Evaluate fragment size. 308d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar switch (F.getKind()) { 309d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Align: { 310d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCAlignFragment &AF = cast<MCAlignFragment>(F); 3117eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 312d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar uint64_t Size = OffsetToAlignment(Address, AF.getAlignment()); 3136742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar if (Size > AF.getMaxBytesToEmit()) 314d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar AF.setFileSize(0); 315d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar else 3166742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar AF.setFileSize(Size); 317d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 318d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 319d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 320d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Data: 3212a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar F.setFileSize(cast<MCDataFragment>(F).getContents().size()); 322d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 323d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 3242a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar case MCFragment::FT_Fill: { 3252a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar MCFillFragment &FF = cast<MCFillFragment>(F); 3262a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar F.setFileSize(FF.getValueSize() * FF.getCount()); 3272a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar break; 3282a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar } 3292a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar 3303f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar case MCFragment::FT_Inst: 3313f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar F.setFileSize(cast<MCInstFragment>(F).getInstSize()); 3323f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar break; 3333f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 334d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Org: { 335d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCOrgFragment &OF = cast<MCOrgFragment>(F); 336d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 33718ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar int64_t TargetLocation; 33818ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar if (!OF.getOffset().EvaluateAsAbsolute(TargetLocation, &Layout)) 33918ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar llvm_report_error("expected assembly-time absolute expression"); 340d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 341d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // FIXME: We need a way to communicate this error. 34218ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar int64_t Offset = TargetLocation - F.getOffset(); 34318ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar if (Offset < 0) 34418ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar llvm_report_error("invalid .org offset '" + Twine(TargetLocation) + 34518ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar "' (at offset '" + Twine(F.getOffset()) + "'"); 3467eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 34718ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar F.setFileSize(Offset); 348d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 3497eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar } 350d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 351d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar case MCFragment::FT_ZeroFill: { 352d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar MCZeroFillFragment &ZFF = cast<MCZeroFillFragment>(F); 353d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 354d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Align the fragment offset; it is safe to adjust the offset freely since 355d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // this is only in virtual sections. 35637fad5ce4d81fd459fafe1517d6cd17e7ab49958Daniel Dunbar Address = RoundUpToAlignment(Address, ZFF.getAlignment()); 35737fad5ce4d81fd459fafe1517d6cd17e7ab49958Daniel Dunbar F.setOffset(Address - SD.getAddress()); 358d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 359d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // FIXME: This is misnamed. 360d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar F.setFileSize(ZFF.getSize()); 361d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar break; 362d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 363d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 364d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 3656742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Address += F.getFileSize(); 3660705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 3670705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 3686742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Set the section sizes. 3696742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar SD.setSize(Address - SD.getAddress()); 370cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD.getSection())) 371d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SD.setFileSize(0); 372d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar else 373d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SD.setFileSize(Address - SD.getAddress()); 3740705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 3750705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 3766e72048add2a6464e038121c6c275da37528aa0aKevin Enderby/// WriteNopData - Write optimal nops to the output file for the \arg Count 3776e72048add2a6464e038121c6c275da37528aa0aKevin Enderby/// bytes. This returns the number of bytes written. It may return 0 if 3786e72048add2a6464e038121c6c275da37528aa0aKevin Enderby/// the \arg Count is more than the maximum optimal nops. 3796e72048add2a6464e038121c6c275da37528aa0aKevin Enderby/// 3806e72048add2a6464e038121c6c275da37528aa0aKevin Enderby/// FIXME this is X86 32-bit specific and should move to a better place. 381bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbarstatic uint64_t WriteNopData(uint64_t Count, MCObjectWriter *OW) { 38276687083a5185cedc00fb8bb0d384b814492849aKevin Enderby static const uint8_t Nops[16][16] = { 38376687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nop 38476687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x90}, 38576687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // xchg %ax,%ax 38676687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x66, 0x90}, 38776687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl (%[re]ax) 38876687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x00}, 38976687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0(%[re]ax) 39076687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x40, 0x00}, 39176687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0(%[re]ax,%[re]ax,1) 39276687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x44, 0x00, 0x00}, 39376687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw 0(%[re]ax,%[re]ax,1) 39476687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00}, 39576687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax) 39676687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00}, 39776687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax,%[re]ax,1) 39876687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, 39976687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw 0L(%[re]ax,%[re]ax,1) 40076687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, 40176687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw %cs:0L(%[re]ax,%[re]ax,1) 40276687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, 40376687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0(%[re]ax,%[re]ax,1) 40476687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw 0(%[re]ax,%[re]ax,1) 40576687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x44, 0x00, 0x00, 40676687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00}, 40776687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw 0(%[re]ax,%[re]ax,1) 40876687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw 0(%[re]ax,%[re]ax,1) 40976687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00, 41076687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00}, 41176687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopw 0(%[re]ax,%[re]ax,1) 41276687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax) */ 41376687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00, 41476687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00}, 41576687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax) 41676687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax) 41776687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, 41876687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00}, 41976687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax) 42076687083a5185cedc00fb8bb0d384b814492849aKevin Enderby // nopl 0L(%[re]ax,%[re]ax,1) 42176687083a5185cedc00fb8bb0d384b814492849aKevin Enderby {0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, 42276687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00} 42376687083a5185cedc00fb8bb0d384b814492849aKevin Enderby }; 42476687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 42576687083a5185cedc00fb8bb0d384b814492849aKevin Enderby if (Count > 15) 42676687083a5185cedc00fb8bb0d384b814492849aKevin Enderby return 0; 42776687083a5185cedc00fb8bb0d384b814492849aKevin Enderby 4286e72048add2a6464e038121c6c275da37528aa0aKevin Enderby for (uint64_t i = 0; i < Count; i++) 429bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar OW->Write8(uint8_t(Nops[Count - 1][i])); 4306e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 4316e72048add2a6464e038121c6c275da37528aa0aKevin Enderby return Count; 4326e72048add2a6464e038121c6c275da37528aa0aKevin Enderby} 4336e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 43453b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar/// WriteFragmentData - Write the \arg F data to the output file. 43553b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbarstatic void WriteFragmentData(const MCFragment &F, MCObjectWriter *OW) { 43653b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar uint64_t Start = OW->getStream().tell(); 4370705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar (void) Start; 4387eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 4390adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar ++EmittedFragments; 4400adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar 4410705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar // FIXME: Embed in fragments instead? 4420705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar switch (F.getKind()) { 443d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Align: { 444d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCAlignFragment &AF = cast<MCAlignFragment>(F); 445d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar uint64_t Count = AF.getFileSize() / AF.getValueSize(); 446d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 447d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // FIXME: This error shouldn't actually occur (the front end should emit 448d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // multiple .align directives to enforce the semantics it wants), but is 449d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // severe enough that we want to report it. How to handle this? 450d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar if (Count * AF.getValueSize() != AF.getFileSize()) 4517eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar llvm_report_error("undefined .align directive, value size '" + 4527eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar Twine(AF.getValueSize()) + 453d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar "' is not a divisor of padding size '" + 454d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar Twine(AF.getFileSize()) + "'"); 455d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 4566e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // See if we are aligning with nops, and if so do that first to try to fill 4576e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // the Count bytes. Then if that did not fill any bytes or there are any 4586e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // bytes left to fill use the the Value and ValueSize to fill the rest. 4596e72048add2a6464e038121c6c275da37528aa0aKevin Enderby if (AF.getEmitNops()) { 460bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar uint64_t NopByteCount = WriteNopData(Count, OW); 4616e72048add2a6464e038121c6c275da37528aa0aKevin Enderby Count -= NopByteCount; 4626e72048add2a6464e038121c6c275da37528aa0aKevin Enderby } 4636e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 464d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar for (uint64_t i = 0; i != Count; ++i) { 465d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar switch (AF.getValueSize()) { 466d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar default: 467d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar assert(0 && "Invalid size!"); 468bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 1: OW->Write8 (uint8_t (AF.getValue())); break; 469bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 2: OW->Write16(uint16_t(AF.getValue())); break; 470bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 4: OW->Write32(uint32_t(AF.getValue())); break; 471bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 8: OW->Write64(uint64_t(AF.getValue())); break; 472d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 473d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 474d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 475d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 4760705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4773a30b827a5c9bf0ed8f31177b6e447083ce9afecDaniel Dunbar case MCFragment::FT_Data: { 4783f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCDataFragment &DF = cast<MCDataFragment>(F); 4793f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar assert(DF.getFileSize() == DF.getContents().size() && "Invalid size!"); 4803f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OW->WriteBytes(DF.getContents().str()); 4810705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar break; 4823a30b827a5c9bf0ed8f31177b6e447083ce9afecDaniel Dunbar } 4830705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4840705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar case MCFragment::FT_Fill: { 4850705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar MCFillFragment &FF = cast<MCFillFragment>(F); 4860705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar for (uint64_t i = 0, e = FF.getCount(); i != e; ++i) { 4870705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar switch (FF.getValueSize()) { 4880705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar default: 4890705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar assert(0 && "Invalid size!"); 490bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 1: OW->Write8 (uint8_t (FF.getValue())); break; 491bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 2: OW->Write16(uint16_t(FF.getValue())); break; 492bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 4: OW->Write32(uint32_t(FF.getValue())); break; 493bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 8: OW->Write64(uint64_t(FF.getValue())); break; 4940705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4950705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4960705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar break; 4970705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4987eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 4993f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar case MCFragment::FT_Inst: 5003f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm_unreachable("unexpected inst fragment after lowering"); 5013f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar break; 5023f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 503d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Org: { 504d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCOrgFragment &OF = cast<MCOrgFragment>(F); 505d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 506d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar for (uint64_t i = 0, e = OF.getFileSize(); i != e; ++i) 507bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar OW->Write8(uint8_t(OF.getValue())); 508d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 509d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 510d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 511d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 512d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar case MCFragment::FT_ZeroFill: { 513d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar assert(0 && "Invalid zero fill fragment in concrete section!"); 514d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar break; 515d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 5160705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 5170705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 51853b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(OW->getStream().tell() - Start == F.getFileSize()); 5190705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 5200705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 52153b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbarvoid MCAssembler::WriteSectionData(const MCSectionData *SD, 52253b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar MCObjectWriter *OW) const { 523d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Ignore virtual sections. 524cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD->getSection())) { 52553b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(SD->getFileSize() == 0); 526d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar return; 527d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 528d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 52953b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar uint64_t Start = OW->getStream().tell(); 5300705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar (void) Start; 5317eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 53253b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar for (MCSectionData::const_iterator it = SD->begin(), 53353b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar ie = SD->end(); it != ie; ++it) 53453b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar WriteFragmentData(*it, OW); 5350705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 5366742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Add section padding. 53753b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(SD->getFileSize() >= SD->getSize() && "Invalid section sizes!"); 53853b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar OW->WriteZeros(SD->getFileSize() - SD->getSize()); 5396742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 54053b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(OW->getStream().tell() - Start == SD->getFileSize()); 5410705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 5420705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 543fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCAssembler::Finish() { 544b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 545b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar llvm::errs() << "assembler backend - pre-layout\n--\n"; 546b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar dump(); }); 547b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 548f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Layout until everything fits. 5498d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar MCAsmLayout Layout(*this); 5508d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar while (LayoutOnce(Layout)) 551f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 552f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 553f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 5543f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm::errs() << "assembler backend - post-relaxation\n--\n"; 5553f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar dump(); }); 5563f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 5573f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Finalize the layout, including fragment lowering. 5583f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar FinishLayout(Layout); 5593f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 5603f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 5613f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm::errs() << "assembler backend - final-layout\n--\n"; 562f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar dump(); }); 563f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 5641a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar llvm::OwningPtr<MCObjectWriter> Writer(getBackend().createObjectWriter(OS)); 5651a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar if (!Writer) 5661a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar llvm_report_error("unable to create object writer!"); 567bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar 568bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // Allow the object writer a chance to perform post-layout binding (for 569bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // example, to set the index fields in the symbol data). 5701a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar Writer->ExecutePostLayoutBinding(*this); 571bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar 572b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // Evaluate and apply the fixups, generating relocation entries as necessary. 573b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCAssembler::iterator it = begin(), ie = end(); it != ie; ++it) { 574b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCSectionData::iterator it2 = it->begin(), 575b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar ie2 = it->end(); it2 != ie2; ++it2) { 576b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCDataFragment *DF = dyn_cast<MCDataFragment>(it2); 577b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar if (!DF) 578b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar continue; 579b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 580b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCDataFragment::fixup_iterator it3 = DF->fixup_begin(), 581b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar ie3 = DF->fixup_end(); it3 != ie3; ++it3) { 582b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCAsmFixup &Fixup = *it3; 583b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 584b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // Evaluate the fixup. 585b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCValue Target; 586b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar uint64_t FixedValue; 587b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar if (!EvaluateFixup(Layout, Fixup, DF, Target, FixedValue)) { 588b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // The fixup was unresolved, we need a relocation. Inform the object 589b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // writer of the relocation, and give it an opportunity to adjust the 590b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // fixup value if need be. 591b751418a3992c9da6f48c988f549c8e4c65e26f1Daniel Dunbar Writer->RecordRelocation(*this, DF, Fixup, Target, FixedValue); 592b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 593b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 59487190c473c216e481e0a70475577e496b3a3449eDaniel Dunbar getBackend().ApplyFixup(Fixup, *DF, FixedValue); 595b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 596b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 597b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 598b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 599bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // Write the object file. 6001a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar Writer->WriteObject(*this); 601f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar OS.flush(); 602f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 603f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 6049d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbarbool MCAssembler::FixupNeedsRelaxation(const MCAsmFixup &Fixup, 6059d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbar const MCFragment *DF, 6068d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar const MCAsmLayout &Layout) const { 607f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Currently we only need to relax X86::reloc_pcrel_1byte. 608f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (unsigned(Fixup.Kind) != X86::reloc_pcrel_1byte) 609f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return false; 610f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 611f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // If we cannot resolve the fixup value, it requires relaxation. 612f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCValue Target; 613f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar uint64_t Value; 614f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (!EvaluateFixup(Layout, Fixup, DF, Target, Value)) 615f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return true; 616f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 617f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Otherwise, relax if the value is too big for a (signed) i8. 618f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return int64_t(Value) != int64_t(int8_t(Value)); 619f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 620f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 6218d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbarbool MCAssembler::LayoutOnce(MCAsmLayout &Layout) { 622d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Layout the concrete sections and fragments. 6235e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar uint64_t Address = 0; 624edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar MCSectionData *Prev = 0; 625edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 6266742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar MCSectionData &SD = *it; 6276742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 628d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Skip virtual sections. 629cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD.getSection())) 630d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar continue; 631d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 632edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar // Align this section if necessary by adding padding bytes to the previous 633edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar // section. 634edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar if (uint64_t Pad = OffsetToAlignment(Address, it->getAlignment())) { 635edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar assert(Prev && "Missing prev section!"); 636edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Prev->setFileSize(Prev->getFileSize() + Pad); 637edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Address += Pad; 638edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar } 6396742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 6406742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Layout the section fragments and its size. 6416742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar SD.setAddress(Address); 6428d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar LayoutSection(SD, Layout); 6436742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Address += SD.getFileSize(); 644edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar 645edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Prev = &SD; 6465e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar } 6470705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 648d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Layout the virtual sections. 649d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 650d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar MCSectionData &SD = *it; 651d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 652cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (!getBackend().isVirtualSection(SD.getSection())) 653d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar continue; 654d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 655b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar // Align this section if necessary by adding padding bytes to the previous 656b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar // section. 657f8b8ad77a8b5632886a4cfe41d798bae7277efcbDaniel Dunbar if (uint64_t Pad = OffsetToAlignment(Address, it->getAlignment())) 658b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar Address += Pad; 659b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar 660d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SD.setAddress(Address); 6618d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar LayoutSection(SD, Layout); 662d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar Address += SD.getSize(); 663d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 664d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 665f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Scan the fixups in order and relax any that don't fit. 666f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 667f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCSectionData &SD = *it; 668b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 669f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCSectionData::iterator it2 = SD.begin(), 670f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie2 = SD.end(); it2 != ie2; ++it2) { 671f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCDataFragment *DF = dyn_cast<MCDataFragment>(it2); 672f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (!DF) 673f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 6740705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 675f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCDataFragment::fixup_iterator it3 = DF->fixup_begin(), 676f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie3 = DF->fixup_end(); it3 != ie3; ++it3) { 677f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCAsmFixup &Fixup = *it3; 678f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 679f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Check whether we need to relax this fixup. 6808d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar if (!FixupNeedsRelaxation(Fixup, DF, Layout)) 681f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 682f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 683f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Relax the instruction. 684f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 685f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // FIXME: This is a huge temporary hack which just looks for x86 686f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // branches; the only thing we need to relax on x86 is 687f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 'X86::reloc_pcrel_1byte'. Once we have MCInst fragments, this will be 688f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // replaced by a TargetAsmBackend hook (most likely tblgen'd) to relax 689f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // an individual MCInst. 690f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar SmallVectorImpl<char> &C = DF->getContents(); 691f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar uint64_t PrevOffset = Fixup.Offset; 692f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar unsigned Amt = 0; 693f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 694f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // jcc instructions 695f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (unsigned(C[Fixup.Offset-1]) >= 0x70 && 696f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar unsigned(C[Fixup.Offset-1]) <= 0x7f) { 697f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C[Fixup.Offset] = C[Fixup.Offset-1] + 0x10; 698f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C[Fixup.Offset-1] = char(0x0f); 699f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ++Fixup.Offset; 700f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Amt = 4; 701f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 702f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // jmp rel8 703f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } else if (C[Fixup.Offset-1] == char(0xeb)) { 704f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C[Fixup.Offset-1] = char(0xe9); 705f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Amt = 3; 706f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 707f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } else 708f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar llvm_unreachable("unknown 1 byte pcrel instruction!"); 709f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 710f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Fixup.Value = MCBinaryExpr::Create( 711f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCBinaryExpr::Sub, Fixup.Value, 712f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCConstantExpr::Create(3, getContext()), 713f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar getContext()); 714f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C.insert(C.begin() + Fixup.Offset, Amt, char(0)); 715f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Fixup.Kind = MCFixupKind(X86::reloc_pcrel_4byte); 716f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 717f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Update the remaining fixups, which have slid. 718f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 719f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // FIXME: This is bad for performance, but will be eliminated by the 720f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // move to MCInst specific fragments. 721f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ++it3; 722f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (; it3 != ie3; ++it3) 723f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar it3->Offset += Amt; 724b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 725f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Update all the symbols for this fragment, which may have slid. 726f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 727f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // FIXME: This is really really bad for performance, but will be 728f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // eliminated by the move to MCInst specific fragments. 729f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCAssembler::symbol_iterator it = symbol_begin(), 730f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie = symbol_end(); it != ie; ++it) { 731f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCSymbolData &SD = *it; 732f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 733f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (it->getFragment() != DF) 734f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 735f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 736f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (SD.getOffset() > PrevOffset) 737f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar SD.setOffset(SD.getOffset() + Amt); 738f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 739f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 740f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Restart layout. 741f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 7423f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // FIXME-PERF: This is O(N^2), but will be eliminated once we have a 7433f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // smart MCAsmLayout object. 744f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return true; 745f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 746f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 747f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 748f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 749f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return false; 750f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 751b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 7523f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbarvoid MCAssembler::FinishLayout(MCAsmLayout &Layout) { 7533f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Lower out any instruction fragments, to simplify the fixup application and 7543f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // output. 7553f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // 7563f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // FIXME-PERF: We don't have to do this, but the assumption is that it is 7573f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // cheap (we will mostly end up eliminating fragments and appending on to data 7583f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // fragments), so the extra complexity downstream isn't worth it. Evaluate 7593f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // this assumption. 7603f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 7613f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCSectionData &SD = *it; 7623f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7633f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar for (MCSectionData::iterator it2 = SD.begin(), 7643f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar ie2 = SD.end(); it2 != ie2; ++it2) { 7653f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCInstFragment *IF = dyn_cast<MCInstFragment>(it2); 7663f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar if (!IF) 7673f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar continue; 7683f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7693f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Create a new data fragment for the instruction. 7703f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // 7713f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // FIXME: Reuse previous data fragment if possible. 7723f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCDataFragment *DF = new MCDataFragment(); 7733f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar SD.getFragmentList().insert(it2, DF); 7743f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7753f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Update the data fragments layout data. 7769799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->setParent(IF->getParent()); 7773f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DF->setOffset(IF->getOffset()); 7783f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DF->setFileSize(IF->getInstSize()); 7793f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7809799de910e97879bf9f30f359551071a94d61570Daniel Dunbar // Copy in the data and the fixups. 7819799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->getContents().append(IF->getCode().begin(), IF->getCode().end()); 7829799de910e97879bf9f30f359551071a94d61570Daniel Dunbar for (unsigned i = 0, e = IF->getFixups().size(); i != e; ++i) 7839799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->getFixups().push_back(IF->getFixups()[i]); 7843f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7853f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Delete the instruction fragment and update the iterator. 7863f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar SD.getFragmentList().erase(IF); 7873f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar it2 = DF; 7883f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar } 7893f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar } 7903f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar} 7913f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 792b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar// Debugging methods 793b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 794b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarnamespace llvm { 795b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 796b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarraw_ostream &operator<<(raw_ostream &OS, const MCAsmFixup &AF) { 7972be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar OS << "<MCAsmFixup" << " Offset:" << AF.Offset << " Value:" << *AF.Value 7982be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar << " Kind:" << AF.Kind << ">"; 799b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar return OS; 800b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 801b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 802b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 803b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 804b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCFragment::dump() { 805b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 806b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 807b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCFragment " << (void*) this << " Offset:" << Offset 808b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " FileSize:" << FileSize; 809b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 810b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << ">"; 811b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 812b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 813b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCAlignFragment::dump() { 814b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 815b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 816b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCAlignFragment "; 817b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 818b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 819b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Alignment:" << getAlignment() 820b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Value:" << getValue() << " ValueSize:" << getValueSize() 821b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " MaxBytesToEmit:" << getMaxBytesToEmit() << ">"; 822b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 823b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 824b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCDataFragment::dump() { 825b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 826b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 827b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCDataFragment "; 828b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 829b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 830b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Contents:["; 831b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (unsigned i = 0, e = getContents().size(); i != e; ++i) { 832b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (i) OS << ","; 833b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << hexdigit((Contents[i] >> 4) & 0xF) << hexdigit(Contents[i] & 0xF); 834b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 8352be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar OS << "] (" << getContents().size() << " bytes)"; 8360bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar 8370bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar if (!getFixups().empty()) { 8380bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << ",\n "; 8390bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << " Fixups:["; 8400bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar for (fixup_iterator it = fixup_begin(), ie = fixup_end(); it != ie; ++it) { 84145aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar if (it != fixup_begin()) OS << ",\n "; 8420bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << *it; 8430bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar } 8440bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << "]"; 8450bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar } 8460bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar 8470bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << ">"; 848b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 849b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 850b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCFillFragment::dump() { 851b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 852b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 853b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCFillFragment "; 854b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 855b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 856b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Value:" << getValue() << " ValueSize:" << getValueSize() 857b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Count:" << getCount() << ">"; 858b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 859b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 8603f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbarvoid MCInstFragment::dump() { 8613f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar raw_ostream &OS = llvm::errs(); 8623f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 8633f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << "<MCInstFragment "; 8643f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar this->MCFragment::dump(); 8653f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << "\n "; 8663f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << " Inst:"; 8673f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar getInst().dump_pretty(OS); 8683f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << ">"; 8693f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar} 8703f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 871b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCOrgFragment::dump() { 872b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 873b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 874b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCOrgFragment "; 875b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 876b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 877b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Offset:" << getOffset() << " Value:" << getValue() << ">"; 878b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 879b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 880b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCZeroFillFragment::dump() { 881b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 882b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 883b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCZeroFillFragment "; 884b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 885b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 886b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Size:" << getSize() << " Alignment:" << getAlignment() << ">"; 887b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 888b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 889b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCSectionData::dump() { 890b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 891b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 892b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCSectionData"; 893b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Alignment:" << getAlignment() << " Address:" << Address 894b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Size:" << Size << " FileSize:" << FileSize 89545aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar << " Fragments:[\n "; 896b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 897b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (it != begin()) OS << ",\n "; 898b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 899b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 900b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "]>"; 901b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 902b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 903b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCSymbolData::dump() { 904b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 905b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 906b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCSymbolData Symbol:" << getSymbol() 907b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Fragment:" << getFragment() << " Offset:" << getOffset() 908b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Flags:" << getFlags() << " Index:" << getIndex(); 909b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isCommon()) 910b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (common, size:" << getCommonSize() 911b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " align: " << getCommonAlignment() << ")"; 912b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isExternal()) 913b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (external)"; 914b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isPrivateExtern()) 915b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (private extern)"; 916b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << ">"; 917b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 918b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 919b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCAssembler::dump() { 920b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 921b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 922b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCAssembler\n"; 92345aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar OS << " Sections:[\n "; 924b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 925b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (it != begin()) OS << ",\n "; 926b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 927b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 928b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "],\n"; 929b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Symbols:["; 930b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 931b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (symbol_iterator it = symbol_begin(), ie = symbol_end(); it != ie; ++it) { 93245aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar if (it != symbol_begin()) OS << ",\n "; 933b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 934b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 935b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "]>\n"; 936b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 937