MCAssembler.cpp revision 337055e62f28f18a9a8c4a090633cae1c2256ae1
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 37653b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar/// WriteFragmentData - Write the \arg F data to the output file. 3778f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbarstatic void WriteFragmentData(const MCAssembler &Asm, const MCFragment &F, 3788f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar MCObjectWriter *OW) { 37953b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar uint64_t Start = OW->getStream().tell(); 3800705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar (void) Start; 3817eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 3820adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar ++EmittedFragments; 3830adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar 3840705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar // FIXME: Embed in fragments instead? 3850705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar switch (F.getKind()) { 386d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Align: { 387d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCAlignFragment &AF = cast<MCAlignFragment>(F); 388d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar uint64_t Count = AF.getFileSize() / AF.getValueSize(); 389d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 390d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // FIXME: This error shouldn't actually occur (the front end should emit 391d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // multiple .align directives to enforce the semantics it wants), but is 392d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // severe enough that we want to report it. How to handle this? 393d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar if (Count * AF.getValueSize() != AF.getFileSize()) 3947eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar llvm_report_error("undefined .align directive, value size '" + 3957eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar Twine(AF.getValueSize()) + 396d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar "' is not a divisor of padding size '" + 397d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar Twine(AF.getFileSize()) + "'"); 398d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 3996e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // See if we are aligning with nops, and if so do that first to try to fill 4006e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // the Count bytes. Then if that did not fill any bytes or there are any 4016e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // bytes left to fill use the the Value and ValueSize to fill the rest. 4028f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar // If we are aligning with nops, ask that target to emit the right data. 4036e72048add2a6464e038121c6c275da37528aa0aKevin Enderby if (AF.getEmitNops()) { 4048f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar if (!Asm.getBackend().WriteNopData(Count, OW)) 4058f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar llvm_report_error("unable to write nop sequence of " + 4068f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar Twine(Count) + " bytes"); 4078f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar break; 4086e72048add2a6464e038121c6c275da37528aa0aKevin Enderby } 4096e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 4108f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar // Otherwise, write out in multiples of the value size. 411d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar for (uint64_t i = 0; i != Count; ++i) { 412d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar switch (AF.getValueSize()) { 413d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar default: 414d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar assert(0 && "Invalid size!"); 415bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 1: OW->Write8 (uint8_t (AF.getValue())); break; 416bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 2: OW->Write16(uint16_t(AF.getValue())); break; 417bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 4: OW->Write32(uint32_t(AF.getValue())); break; 418bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 8: OW->Write64(uint64_t(AF.getValue())); break; 419d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 420d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 421d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 422d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 4230705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4243a30b827a5c9bf0ed8f31177b6e447083ce9afecDaniel Dunbar case MCFragment::FT_Data: { 4253f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCDataFragment &DF = cast<MCDataFragment>(F); 4263f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar assert(DF.getFileSize() == DF.getContents().size() && "Invalid size!"); 4273f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OW->WriteBytes(DF.getContents().str()); 4280705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar break; 4293a30b827a5c9bf0ed8f31177b6e447083ce9afecDaniel Dunbar } 4300705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4310705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar case MCFragment::FT_Fill: { 4320705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar MCFillFragment &FF = cast<MCFillFragment>(F); 4330705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar for (uint64_t i = 0, e = FF.getCount(); i != e; ++i) { 4340705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar switch (FF.getValueSize()) { 4350705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar default: 4360705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar assert(0 && "Invalid size!"); 437bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 1: OW->Write8 (uint8_t (FF.getValue())); break; 438bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 2: OW->Write16(uint16_t(FF.getValue())); break; 439bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 4: OW->Write32(uint32_t(FF.getValue())); break; 440bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 8: OW->Write64(uint64_t(FF.getValue())); break; 4410705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4420705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4430705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar break; 4440705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4457eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 4463f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar case MCFragment::FT_Inst: 4473f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm_unreachable("unexpected inst fragment after lowering"); 4483f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar break; 4493f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 450d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Org: { 451d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCOrgFragment &OF = cast<MCOrgFragment>(F); 452d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 453d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar for (uint64_t i = 0, e = OF.getFileSize(); i != e; ++i) 454bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar OW->Write8(uint8_t(OF.getValue())); 455d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 456d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 457d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 458d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 459d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar case MCFragment::FT_ZeroFill: { 460d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar assert(0 && "Invalid zero fill fragment in concrete section!"); 461d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar break; 462d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 4630705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4640705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 46553b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(OW->getStream().tell() - Start == F.getFileSize()); 4660705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 4670705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 46853b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbarvoid MCAssembler::WriteSectionData(const MCSectionData *SD, 46953b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar MCObjectWriter *OW) const { 470d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Ignore virtual sections. 471cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD->getSection())) { 47253b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(SD->getFileSize() == 0); 473d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar return; 474d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 475d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 47653b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar uint64_t Start = OW->getStream().tell(); 4770705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar (void) Start; 4787eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 47953b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar for (MCSectionData::const_iterator it = SD->begin(), 48053b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar ie = SD->end(); it != ie; ++it) 4818f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar WriteFragmentData(*this, *it, OW); 4820705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4836742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Add section padding. 48453b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(SD->getFileSize() >= SD->getSize() && "Invalid section sizes!"); 48553b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar OW->WriteZeros(SD->getFileSize() - SD->getSize()); 4866742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 48753b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(OW->getStream().tell() - Start == SD->getFileSize()); 4880705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 4890705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 490fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCAssembler::Finish() { 491b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 492b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar llvm::errs() << "assembler backend - pre-layout\n--\n"; 493b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar dump(); }); 494b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 495f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Layout until everything fits. 4968d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar MCAsmLayout Layout(*this); 4978d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar while (LayoutOnce(Layout)) 498f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 499f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 500f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 5013f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm::errs() << "assembler backend - post-relaxation\n--\n"; 5023f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar dump(); }); 5033f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 5043f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Finalize the layout, including fragment lowering. 5053f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar FinishLayout(Layout); 5063f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 5073f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 5083f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm::errs() << "assembler backend - final-layout\n--\n"; 509f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar dump(); }); 510f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 5111a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar llvm::OwningPtr<MCObjectWriter> Writer(getBackend().createObjectWriter(OS)); 5121a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar if (!Writer) 5131a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar llvm_report_error("unable to create object writer!"); 514bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar 515bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // Allow the object writer a chance to perform post-layout binding (for 516bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // example, to set the index fields in the symbol data). 5171a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar Writer->ExecutePostLayoutBinding(*this); 518bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar 519b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // Evaluate and apply the fixups, generating relocation entries as necessary. 520b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCAssembler::iterator it = begin(), ie = end(); it != ie; ++it) { 521b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCSectionData::iterator it2 = it->begin(), 522b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar ie2 = it->end(); it2 != ie2; ++it2) { 523b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCDataFragment *DF = dyn_cast<MCDataFragment>(it2); 524b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar if (!DF) 525b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar continue; 526b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 527b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCDataFragment::fixup_iterator it3 = DF->fixup_begin(), 528b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar ie3 = DF->fixup_end(); it3 != ie3; ++it3) { 529b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCAsmFixup &Fixup = *it3; 530b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 531b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // Evaluate the fixup. 532b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCValue Target; 533b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar uint64_t FixedValue; 534b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar if (!EvaluateFixup(Layout, Fixup, DF, Target, FixedValue)) { 535b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // The fixup was unresolved, we need a relocation. Inform the object 536b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // writer of the relocation, and give it an opportunity to adjust the 537b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // fixup value if need be. 538b751418a3992c9da6f48c988f549c8e4c65e26f1Daniel Dunbar Writer->RecordRelocation(*this, DF, Fixup, Target, FixedValue); 539b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 540b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 54187190c473c216e481e0a70475577e496b3a3449eDaniel Dunbar getBackend().ApplyFixup(Fixup, *DF, FixedValue); 542b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 543b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 544b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 545b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 546bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // Write the object file. 5471a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar Writer->WriteObject(*this); 548f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar OS.flush(); 549f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 550f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 5519d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbarbool MCAssembler::FixupNeedsRelaxation(const MCAsmFixup &Fixup, 5529d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbar const MCFragment *DF, 5538d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar const MCAsmLayout &Layout) const { 554f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Currently we only need to relax X86::reloc_pcrel_1byte. 555f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (unsigned(Fixup.Kind) != X86::reloc_pcrel_1byte) 556f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return false; 557f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 558f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // If we cannot resolve the fixup value, it requires relaxation. 559f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCValue Target; 560f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar uint64_t Value; 561f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (!EvaluateFixup(Layout, Fixup, DF, Target, Value)) 562f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return true; 563f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 564f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Otherwise, relax if the value is too big for a (signed) i8. 565f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return int64_t(Value) != int64_t(int8_t(Value)); 566f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 567f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 5688d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbarbool MCAssembler::LayoutOnce(MCAsmLayout &Layout) { 569d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Layout the concrete sections and fragments. 5705e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar uint64_t Address = 0; 571edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar MCSectionData *Prev = 0; 572edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 5736742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar MCSectionData &SD = *it; 5746742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 575d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Skip virtual sections. 576cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD.getSection())) 577d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar continue; 578d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 579edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar // Align this section if necessary by adding padding bytes to the previous 580edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar // section. 581edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar if (uint64_t Pad = OffsetToAlignment(Address, it->getAlignment())) { 582edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar assert(Prev && "Missing prev section!"); 583edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Prev->setFileSize(Prev->getFileSize() + Pad); 584edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Address += Pad; 585edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar } 5866742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 5876742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Layout the section fragments and its size. 5886742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar SD.setAddress(Address); 5898d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar LayoutSection(SD, Layout); 5906742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Address += SD.getFileSize(); 591edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar 592edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Prev = &SD; 5935e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar } 5940705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 595d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Layout the virtual sections. 596d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 597d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar MCSectionData &SD = *it; 598d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 599cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (!getBackend().isVirtualSection(SD.getSection())) 600d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar continue; 601d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 602b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar // Align this section if necessary by adding padding bytes to the previous 603b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar // section. 604f8b8ad77a8b5632886a4cfe41d798bae7277efcbDaniel Dunbar if (uint64_t Pad = OffsetToAlignment(Address, it->getAlignment())) 605b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar Address += Pad; 606b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar 607d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SD.setAddress(Address); 6088d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar LayoutSection(SD, Layout); 609d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar Address += SD.getSize(); 610d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 611d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 612f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Scan the fixups in order and relax any that don't fit. 613f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 614f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCSectionData &SD = *it; 615b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 616f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCSectionData::iterator it2 = SD.begin(), 617f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie2 = SD.end(); it2 != ie2; ++it2) { 618f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCDataFragment *DF = dyn_cast<MCDataFragment>(it2); 619f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (!DF) 620f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 6210705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 622f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCDataFragment::fixup_iterator it3 = DF->fixup_begin(), 623f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie3 = DF->fixup_end(); it3 != ie3; ++it3) { 624f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCAsmFixup &Fixup = *it3; 625f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 626f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Check whether we need to relax this fixup. 6278d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar if (!FixupNeedsRelaxation(Fixup, DF, Layout)) 628f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 629f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 630f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Relax the instruction. 631f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 632f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // FIXME: This is a huge temporary hack which just looks for x86 633f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // branches; the only thing we need to relax on x86 is 634f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 'X86::reloc_pcrel_1byte'. Once we have MCInst fragments, this will be 635f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // replaced by a TargetAsmBackend hook (most likely tblgen'd) to relax 636f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // an individual MCInst. 637f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar SmallVectorImpl<char> &C = DF->getContents(); 638f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar uint64_t PrevOffset = Fixup.Offset; 639f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar unsigned Amt = 0; 640f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 641f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // jcc instructions 642f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (unsigned(C[Fixup.Offset-1]) >= 0x70 && 643f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar unsigned(C[Fixup.Offset-1]) <= 0x7f) { 644f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C[Fixup.Offset] = C[Fixup.Offset-1] + 0x10; 645f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C[Fixup.Offset-1] = char(0x0f); 646f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ++Fixup.Offset; 647f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Amt = 4; 648f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 649f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // jmp rel8 650f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } else if (C[Fixup.Offset-1] == char(0xeb)) { 651f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C[Fixup.Offset-1] = char(0xe9); 652f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Amt = 3; 653f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 654f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } else 655f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar llvm_unreachable("unknown 1 byte pcrel instruction!"); 656f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 657f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Fixup.Value = MCBinaryExpr::Create( 658f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCBinaryExpr::Sub, Fixup.Value, 659f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCConstantExpr::Create(3, getContext()), 660f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar getContext()); 661f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar C.insert(C.begin() + Fixup.Offset, Amt, char(0)); 662f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar Fixup.Kind = MCFixupKind(X86::reloc_pcrel_4byte); 663f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 664f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Update the remaining fixups, which have slid. 665f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 666f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // FIXME: This is bad for performance, but will be eliminated by the 667f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // move to MCInst specific fragments. 668f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ++it3; 669f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (; it3 != ie3; ++it3) 670f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar it3->Offset += Amt; 671b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 672f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Update all the symbols for this fragment, which may have slid. 673f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 674f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // FIXME: This is really really bad for performance, but will be 675f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // eliminated by the move to MCInst specific fragments. 676f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCAssembler::symbol_iterator it = symbol_begin(), 677f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie = symbol_end(); it != ie; ++it) { 678f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCSymbolData &SD = *it; 679f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 680f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (it->getFragment() != DF) 681f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 682f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 683f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (SD.getOffset() > PrevOffset) 684f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar SD.setOffset(SD.getOffset() + Amt); 685f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 686f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 687f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Restart layout. 688f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // 6893f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // FIXME-PERF: This is O(N^2), but will be eliminated once we have a 6903f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // smart MCAsmLayout object. 691f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return true; 692f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 693f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 694f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 695f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 696f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return false; 697f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 698b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 6993f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbarvoid MCAssembler::FinishLayout(MCAsmLayout &Layout) { 7003f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Lower out any instruction fragments, to simplify the fixup application and 7013f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // output. 7023f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // 7033f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // FIXME-PERF: We don't have to do this, but the assumption is that it is 7043f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // cheap (we will mostly end up eliminating fragments and appending on to data 7053f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // fragments), so the extra complexity downstream isn't worth it. Evaluate 7063f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // this assumption. 7073f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 7083f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCSectionData &SD = *it; 7093f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7103f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar for (MCSectionData::iterator it2 = SD.begin(), 7113f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar ie2 = SD.end(); it2 != ie2; ++it2) { 7123f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCInstFragment *IF = dyn_cast<MCInstFragment>(it2); 7133f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar if (!IF) 7143f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar continue; 7153f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7163f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Create a new data fragment for the instruction. 7173f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // 718337055e62f28f18a9a8c4a090633cae1c2256ae1Daniel Dunbar // FIXME-PERF: Reuse previous data fragment if possible. 7193f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCDataFragment *DF = new MCDataFragment(); 7203f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar SD.getFragmentList().insert(it2, DF); 7213f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7223f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Update the data fragments layout data. 7239799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->setParent(IF->getParent()); 7243f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DF->setOffset(IF->getOffset()); 7253f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DF->setFileSize(IF->getInstSize()); 7263f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7279799de910e97879bf9f30f359551071a94d61570Daniel Dunbar // Copy in the data and the fixups. 7289799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->getContents().append(IF->getCode().begin(), IF->getCode().end()); 7299799de910e97879bf9f30f359551071a94d61570Daniel Dunbar for (unsigned i = 0, e = IF->getFixups().size(); i != e; ++i) 7309799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->getFixups().push_back(IF->getFixups()[i]); 7313f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7323f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Delete the instruction fragment and update the iterator. 7333f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar SD.getFragmentList().erase(IF); 7343f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar it2 = DF; 7353f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar } 7363f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar } 7373f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar} 7383f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 739b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar// Debugging methods 740b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 741b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarnamespace llvm { 742b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 743b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarraw_ostream &operator<<(raw_ostream &OS, const MCAsmFixup &AF) { 7442be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar OS << "<MCAsmFixup" << " Offset:" << AF.Offset << " Value:" << *AF.Value 7452be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar << " Kind:" << AF.Kind << ">"; 746b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar return OS; 747b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 748b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 749b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 750b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 751b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCFragment::dump() { 752b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 753b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 754b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCFragment " << (void*) this << " Offset:" << Offset 755b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " FileSize:" << FileSize; 756b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 757b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << ">"; 758b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 759b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 760b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCAlignFragment::dump() { 761b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 762b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 763b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCAlignFragment "; 764b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 765b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 766b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Alignment:" << getAlignment() 767b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Value:" << getValue() << " ValueSize:" << getValueSize() 768b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " MaxBytesToEmit:" << getMaxBytesToEmit() << ">"; 769b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 770b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 771b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCDataFragment::dump() { 772b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 773b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 774b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCDataFragment "; 775b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 776b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 777b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Contents:["; 778b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (unsigned i = 0, e = getContents().size(); i != e; ++i) { 779b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (i) OS << ","; 780b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << hexdigit((Contents[i] >> 4) & 0xF) << hexdigit(Contents[i] & 0xF); 781b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 7822be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar OS << "] (" << getContents().size() << " bytes)"; 7830bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar 7840bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar if (!getFixups().empty()) { 7850bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << ",\n "; 7860bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << " Fixups:["; 7870bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar for (fixup_iterator it = fixup_begin(), ie = fixup_end(); it != ie; ++it) { 78845aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar if (it != fixup_begin()) OS << ",\n "; 7890bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << *it; 7900bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar } 7910bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << "]"; 7920bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar } 7930bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar 7940bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << ">"; 795b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 796b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 797b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCFillFragment::dump() { 798b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 799b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 800b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCFillFragment "; 801b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 802b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 803b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Value:" << getValue() << " ValueSize:" << getValueSize() 804b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Count:" << getCount() << ">"; 805b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 806b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 8073f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbarvoid MCInstFragment::dump() { 8083f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar raw_ostream &OS = llvm::errs(); 8093f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 8103f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << "<MCInstFragment "; 8113f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar this->MCFragment::dump(); 8123f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << "\n "; 8133f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << " Inst:"; 8143f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar getInst().dump_pretty(OS); 8153f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << ">"; 8163f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar} 8173f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 818b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCOrgFragment::dump() { 819b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 820b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 821b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCOrgFragment "; 822b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 823b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 824b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Offset:" << getOffset() << " Value:" << getValue() << ">"; 825b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 826b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 827b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCZeroFillFragment::dump() { 828b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 829b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 830b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCZeroFillFragment "; 831b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 832b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 833b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Size:" << getSize() << " Alignment:" << getAlignment() << ">"; 834b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 835b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 836b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCSectionData::dump() { 837b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 838b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 839b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCSectionData"; 840b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Alignment:" << getAlignment() << " Address:" << Address 841b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Size:" << Size << " FileSize:" << FileSize 84245aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar << " Fragments:[\n "; 843b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 844b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (it != begin()) OS << ",\n "; 845b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 846b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 847b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "]>"; 848b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 849b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 850b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCSymbolData::dump() { 851b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 852b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 853b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCSymbolData Symbol:" << getSymbol() 854b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Fragment:" << getFragment() << " Offset:" << getOffset() 855b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Flags:" << getFlags() << " Index:" << getIndex(); 856b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isCommon()) 857b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (common, size:" << getCommonSize() 858b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " align: " << getCommonAlignment() << ")"; 859b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isExternal()) 860b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (external)"; 861b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isPrivateExtern()) 862b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (private extern)"; 863b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << ">"; 864b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 865b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 866b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCAssembler::dump() { 867b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 868b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 869b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCAssembler\n"; 87045aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar OS << " Sections:[\n "; 871b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 872b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (it != begin()) OS << ",\n "; 873b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 874b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 875b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "],\n"; 876b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Symbols:["; 877b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 878b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (symbol_iterator it = symbol_begin(), ie = symbol_end(); it != ie; ++it) { 87945aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar if (it != symbol_begin()) OS << ",\n "; 880b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 881b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 882b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "]>\n"; 883b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 884