MCAssembler.cpp revision 7c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2c
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 2823132b188ba651ba172380cd082cc286df73d440Chris Lattner#include <vector> 29fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarusing namespace llvm; 30fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 31ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbarnamespace { 32ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbarnamespace stats { 33ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel DunbarSTATISTIC(RelaxedInstructions, "Number of relaxed instructions"); 34ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel DunbarSTATISTIC(RelaxationSteps, "Number of assembler layout and relaxation steps"); 350adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel DunbarSTATISTIC(EmittedFragments, "Number of emitted assembler fragments"); 36ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel DunbarSTATISTIC(EvaluateFixup, "Number of evaluated fixups"); 37ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel DunbarSTATISTIC(ObjectBytes, "Number of emitted object file bytes"); 38ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar} 39ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar} 400adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar 418f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// FIXME FIXME FIXME: There are number of places in this file where we convert 428f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// what is a 64-bit assembler value used for computation into a value in the 438f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// object file, which may truncate it. We should detect that truncation where 448f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar// invalid and report errors back. 458f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar 46fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar/* *** */ 47fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 48207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbaruint64_t MCAsmLayout::getFragmentAddress(const MCFragment *F) const { 497c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar assert(F->getParent() && "Missing section()!"); 507c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar return getSectionAddress(F->getParent()) + F->getOffset(); 51207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar} 52207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar 53207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbaruint64_t MCAsmLayout::getSymbolAddress(const MCSymbolData *SD) const { 547c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar assert(SD->getFragment() && "Invalid getAddress() on undefined symbol!"); 557c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar return getFragmentAddress(SD->getFragment()) + SD->getOffset(); 56207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar} 57207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar 58207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbaruint64_t MCAsmLayout::getSectionAddress(const MCSectionData *SD) const { 597c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar assert(SD->Address != ~UINT64_C(0) && "Address not set!"); 607c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar return SD->Address; 61207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar} 62207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar 63207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbarvoid MCAsmLayout::setSectionAddress(MCSectionData *SD, uint64_t Value) { 647c3d45a03e64ac1b5b2ecdb7153989fd7cebfd2cDaniel Dunbar SD->Address = Value; 65207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar} 66207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar 67207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar/* *** */ 68207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar 690705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel DunbarMCFragment::MCFragment() : Kind(FragmentType(~0)) { 700705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 710705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 725e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel DunbarMCFragment::MCFragment(FragmentType _Kind, MCSectionData *_Parent) 730705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar : Kind(_Kind), 745e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar Parent(_Parent), 750705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar FileSize(~UINT64_C(0)) 76fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar{ 775e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar if (Parent) 785e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar Parent->getFragmentList().push_back(this); 79fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 80fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 810705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel DunbarMCFragment::~MCFragment() { 820705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 830705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 84fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar/* *** */ 85fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 8681e400092f55c2eba157172bfc0dd0df8317638dDaniel DunbarMCSectionData::MCSectionData() : Section(0) {} 87fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 88fb4a6b397665df011348ade24a8e38d2219f095aDaniel DunbarMCSectionData::MCSectionData(const MCSection &_Section, MCAssembler *A) 8981e400092f55c2eba157172bfc0dd0df8317638dDaniel Dunbar : Section(&_Section), 90fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar Alignment(1), 915e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar Address(~UINT64_C(0)), 926742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Size(~UINT64_C(0)), 933f6a960f9c9ad27f2ac573020df414e8b8cdda04Daniel Dunbar FileSize(~UINT64_C(0)), 94e1ec617c6abf0b9dc1eecbbfe483bda3bb2b7795Daniel Dunbar HasInstructions(false) 95fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar{ 96fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar if (A) 97fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar A->getSectionList().push_back(this); 98fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 99fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 100fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar/* *** */ 101fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 102efbb5330b8d383a393c83d2da5d631c98b0bb3fdDaniel DunbarMCSymbolData::MCSymbolData() : Symbol(0) {} 103f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar 104cb579b3338fe8d9e4424b138f597a4696cb89de3Daniel DunbarMCSymbolData::MCSymbolData(const MCSymbol &_Symbol, MCFragment *_Fragment, 105f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar uint64_t _Offset, MCAssembler *A) 106efbb5330b8d383a393c83d2da5d631c98b0bb3fdDaniel Dunbar : Symbol(&_Symbol), Fragment(_Fragment), Offset(_Offset), 1078f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar IsExternal(false), IsPrivateExtern(false), 1088f4d146c340c9423271ebd7bb3fd32b880000bc9Daniel Dunbar CommonSize(0), CommonAlign(0), Flags(0), Index(0) 109f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar{ 110f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar if (A) 111f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar A->getSymbolList().push_back(this); 112f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar} 113f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar 114f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar/* *** */ 115f3d2ef0c9712381a105118336975adcfbf733db0Daniel Dunbar 1161f3e445184e5ca2aa4295c2a77f2a4e0b957fea1Daniel DunbarMCAssembler::MCAssembler(MCContext &_Context, TargetAsmBackend &_Backend, 117cf871e5abff63a53f9e97ff9e37fb7297d0cb847Daniel Dunbar MCCodeEmitter &_Emitter, raw_ostream &_OS) 118cf871e5abff63a53f9e97ff9e37fb7297d0cb847Daniel Dunbar : Context(_Context), Backend(_Backend), Emitter(_Emitter), 119cf871e5abff63a53f9e97ff9e37fb7297d0cb847Daniel Dunbar OS(_OS), SubsectionsViaSymbols(false) 1206009db486e7fba448ccb28dff676c012efade8f0Daniel Dunbar{ 1216009db486e7fba448ccb28dff676c012efade8f0Daniel Dunbar} 122fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 123fb4a6b397665df011348ade24a8e38d2219f095aDaniel DunbarMCAssembler::~MCAssembler() { 124fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar} 125fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbar 126939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbarstatic bool isScatteredFixupFullyResolvedSimple(const MCAssembler &Asm, 127939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCAsmFixup &Fixup, 128939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCValue Target, 129939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCSection *BaseSection) { 130939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // The effective fixup address is 131939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // addr(atom(A)) + offset(A) 132939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // - addr(atom(B)) - offset(B) 133939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // - addr(<base symbol>) + <fixup offset from base symbol> 134939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // and the offsets are not relocatable, so the fixup is fully resolved when 135939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // addr(atom(A)) - addr(atom(B)) - addr(<base symbol>)) == 0. 136939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // 137939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // The simple (Darwin, except on x86_64) way of dealing with this was to 138939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // assume that any reference to a temporary symbol *must* be a temporary 139939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // symbol in the same atom, unless the sections differ. Therefore, any PCrel 140939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // relocation to a temporary symbol (in the same section) is fully 141939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // resolved. This also works in conjunction with absolutized .set, which 142939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // requires the compiler to use .set to absolutize the differences between 143939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // symbols which the compiler knows to be assembly time constants, so we don't 144939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // need to worry about consider symbol differences fully resolved. 145939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 146939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // Non-relative fixups are only resolved if constant. 147939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (!BaseSection) 148939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return Target.isAbsolute(); 149939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 150939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // Otherwise, relative fixups are only resolved if not a difference and the 151939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // target is a temporary in the same section. 152939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (Target.isAbsolute() || Target.getSymB()) 153939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return false; 154939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 155939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCSymbol *A = &Target.getSymA()->getSymbol(); 156939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (!A->isTemporary() || !A->isInSection() || 157939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar &A->getSection() != BaseSection) 158939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return false; 159939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 160939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar return true; 161939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar} 162939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 163034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbarstatic bool isScatteredFixupFullyResolved(const MCAssembler &Asm, 164207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar const MCAsmLayout &Layout, 165034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCAsmFixup &Fixup, 166034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCValue Target, 167034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCSymbolData *BaseSymbol) { 168034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // The effective fixup address is 169034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // addr(atom(A)) + offset(A) 170034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // - addr(atom(B)) - offset(B) 171034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // - addr(BaseSymbol) + <fixup offset from base symbol> 172034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // and the offsets are not relocatable, so the fixup is fully resolved when 173034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // addr(atom(A)) - addr(atom(B)) - addr(BaseSymbol) == 0. 174034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // 175034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Note that "false" is almost always conservatively correct (it means we emit 176034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // a relocation which is unnecessary), except when it would force us to emit a 177034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // relocation which the target cannot encode. 178034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 179034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCSymbolData *A_Base = 0, *B_Base = 0; 180034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (const MCSymbolRefExpr *A = Target.getSymA()) { 181034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Modified symbol references cannot be resolved. 182034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (A->getKind() != MCSymbolRefExpr::VK_None) 183034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 184034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 185207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar A_Base = Asm.getAtom(Layout, &Asm.getSymbolData(A->getSymbol())); 186034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!A_Base) 187034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 188034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar } 189034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 190034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (const MCSymbolRefExpr *B = Target.getSymB()) { 191034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Modified symbol references cannot be resolved. 192034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (B->getKind() != MCSymbolRefExpr::VK_None) 193034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 194034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 195207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar B_Base = Asm.getAtom(Layout, &Asm.getSymbolData(B->getSymbol())); 196034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!B_Base) 197034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return false; 198034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar } 199034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 200034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // If there is no base, A and B have to be the same atom for this fixup to be 201034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // fully resolved. 202034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!BaseSymbol) 203034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return A_Base == B_Base; 204034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 205034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // Otherwise, B must be missing and A must be the base. 206034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar return !B_Base && BaseSymbol == A_Base; 207034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar} 208034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 209238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbarbool MCAssembler::isSymbolLinkerVisible(const MCSymbolData *SD) const { 210238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar // Non-temporary labels should always be visible to the linker. 211238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar if (!SD->getSymbol().isTemporary()) 212238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar return true; 213238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar 214238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar // Absolute temporary labels are never visible. 215238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar if (!SD->getFragment()) 216238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar return false; 217238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar 218238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar // Otherwise, check if the section requires symbols even for temporary labels. 219238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar return getBackend().doesSectionRequireSymbols( 220238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar SD->getFragment()->getParent()->getSection()); 221238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar} 222238698566311e9dba4092dfa6c0bfe253279702eDaniel Dunbar 223207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar// FIXME-PERF: This routine is really slow. 224207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbarconst MCSymbolData *MCAssembler::getAtomForAddress(const MCAsmLayout &Layout, 225207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar const MCSectionData *Section, 2268ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar uint64_t Address) const { 2278ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar const MCSymbolData *Best = 0; 228207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar uint64_t BestAddress = 0; 229207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar 2308ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar for (MCAssembler::const_symbol_iterator it = symbol_begin(), 2318ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar ie = symbol_end(); it != ie; ++it) { 2328ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Ignore non-linker visible symbols. 2338ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (!isSymbolLinkerVisible(it)) 2348ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar continue; 2358ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2368ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Ignore symbols not in the same section. 2378ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (!it->getFragment() || it->getFragment()->getParent() != Section) 2388ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar continue; 2398ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2408ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Otherwise, find the closest symbol preceding this address (ties are 2418ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // resolved in favor of the last defined symbol). 242207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar uint64_t SymbolAddress = Layout.getSymbolAddress(it); 243207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar if (SymbolAddress <= Address && (!Best || SymbolAddress >= BestAddress)) { 2448ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar Best = it; 245207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar BestAddress = SymbolAddress; 246207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar } 2478ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar } 2488ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2498ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return Best; 2508ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar} 2518ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 252207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar// FIXME-PERF: This routine is really slow. 253207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbarconst MCSymbolData *MCAssembler::getAtom(const MCAsmLayout &Layout, 254207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar const MCSymbolData *SD) const { 2558ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Linker visible symbols define atoms. 2568ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (isSymbolLinkerVisible(SD)) 2578ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return SD; 2588ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2598ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Absolute and undefined symbols have no defining atom. 2608ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar if (!SD->getFragment()) 2618ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar return 0; 2628ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2638ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar // Otherwise, search by address. 264207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar return getAtomForAddress(Layout, SD->getFragment()->getParent(), 265207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Layout.getSymbolAddress(SD)); 2668ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar} 2678ad0dccbf2f0c5ecf9fdad93ac0207f6eaabaa1bDaniel Dunbar 2689d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbarbool MCAssembler::EvaluateFixup(const MCAsmLayout &Layout, 2699d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbar const MCAsmFixup &Fixup, const MCFragment *DF, 270df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar MCValue &Target, uint64_t &Value) const { 271ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar ++stats::EvaluateFixup; 272ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar 273df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar if (!Fixup.Value->EvaluateAsRelocatable(Target, &Layout)) 274df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar llvm_report_error("expected relocatable expression"); 275df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 276df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar // FIXME: How do non-scattered symbols work in ELF? I presume the linker 277df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar // doesn't support small relocations, but then under what criteria does the 278df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar // assembler allow symbol differences? 279df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 280df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar Value = Target.getConstant(); 281df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 282b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar bool IsPCRel = 283b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar Emitter.getFixupKindInfo(Fixup.Kind).Flags & MCFixupKindInfo::FKF_IsPCRel; 284b36052f0e4f59525b34bb4b56648c9121a8beda8Daniel Dunbar bool IsResolved = true; 2859a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (const MCSymbolRefExpr *A = Target.getSymA()) { 2869a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (A->getSymbol().isDefined()) 287207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Value += Layout.getSymbolAddress(&getSymbolData(A->getSymbol())); 288df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar else 289df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar IsResolved = false; 290df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar } 2919a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (const MCSymbolRefExpr *B = Target.getSymB()) { 2929a1d20042f6a6ec648a3588f9b13264a4570aab0Daniel Dunbar if (B->getSymbol().isDefined()) 293207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Value -= Layout.getSymbolAddress(&getSymbolData(B->getSymbol())); 294df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar else 295df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar IsResolved = false; 296939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar } 297df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 298939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // If we are using scattered symbols, determine whether this value is actually 299939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar // resolved; scattering may cause atoms to move. 300939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (IsResolved && getBackend().hasScatteredSymbols()) { 301939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (getBackend().hasReliableSymbolDifference()) { 302034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // If this is a PCrel relocation, find the base atom (identified by its 303034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar // symbol) that the fixup value is relative to. 304034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar const MCSymbolData *BaseSymbol = 0; 305034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (IsPCRel) { 306034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar BaseSymbol = getAtomForAddress( 307207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Layout, DF->getParent(), Layout.getFragmentAddress(DF)+Fixup.Offset); 308034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (!BaseSymbol) 309034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar IsResolved = false; 310034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar } 311034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar 312034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar if (IsResolved) 313207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar IsResolved = isScatteredFixupFullyResolved(*this, Layout, Fixup, Target, 314034843ac8bca36d14ef9d83b50596354b5f3420fDaniel Dunbar BaseSymbol); 315939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar } else { 316939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar const MCSection *BaseSection = 0; 317939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar if (IsPCRel) 318939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar BaseSection = &DF->getParent()->getSection(); 319939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar 320c6f598209a6ffc1e5273d867c7fd545359c4f209Daniel Dunbar IsResolved = isScatteredFixupFullyResolvedSimple(*this, Fixup, Target, 321939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar BaseSection); 322939f8d7ca23b95acdd5d1e71a7579ee8d33e7fd6Daniel Dunbar } 323df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar } 324df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 325df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar if (IsPCRel) 326207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Value -= Layout.getFragmentAddress(DF) + Fixup.Offset; 327df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 328df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar return IsResolved; 329df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar} 330df3c8f29691a1e3f9ac4afbf05be52dbc898dae9Daniel Dunbar 3318d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbarvoid MCAssembler::LayoutSection(MCSectionData &SD, 3328d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar MCAsmLayout &Layout) { 333207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar uint64_t Address, StartAddress = Address = Layout.getSectionAddress(&SD); 3340705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 3350705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar for (MCSectionData::iterator it = SD.begin(), ie = SD.end(); it != ie; ++it) { 3360705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar MCFragment &F = *it; 337d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 338207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar F.setOffset(Address - StartAddress); 339d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 340d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // Evaluate fragment size. 341d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar switch (F.getKind()) { 342d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Align: { 343d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCAlignFragment &AF = cast<MCAlignFragment>(F); 3447eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 345d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar uint64_t Size = OffsetToAlignment(Address, AF.getAlignment()); 3466742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar if (Size > AF.getMaxBytesToEmit()) 347d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar AF.setFileSize(0); 348d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar else 3496742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar AF.setFileSize(Size); 350d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 351d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 352d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 353d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Data: 3542a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar F.setFileSize(cast<MCDataFragment>(F).getContents().size()); 355d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 356d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 3572a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar case MCFragment::FT_Fill: { 3582a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar MCFillFragment &FF = cast<MCFillFragment>(F); 3592a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar F.setFileSize(FF.getValueSize() * FF.getCount()); 3602a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar break; 3612a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar } 3622a6e3f5be21fdcb1fa81533ec81ba879df815607Daniel Dunbar 3633f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar case MCFragment::FT_Inst: 3643f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar F.setFileSize(cast<MCInstFragment>(F).getInstSize()); 3653f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar break; 3663f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 367d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Org: { 368d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCOrgFragment &OF = cast<MCOrgFragment>(F); 369d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 37018ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar int64_t TargetLocation; 37118ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar if (!OF.getOffset().EvaluateAsAbsolute(TargetLocation, &Layout)) 37218ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar llvm_report_error("expected assembly-time absolute expression"); 373d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 374d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // FIXME: We need a way to communicate this error. 37518ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar int64_t Offset = TargetLocation - F.getOffset(); 37618ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar if (Offset < 0) 37718ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar llvm_report_error("invalid .org offset '" + Twine(TargetLocation) + 37818ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar "' (at offset '" + Twine(F.getOffset()) + "'"); 3797eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 38018ff2cced7e08ac76d8d5bcff8160a5f9a109cbbDaniel Dunbar F.setFileSize(Offset); 381d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 3827eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar } 383d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 384d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar case MCFragment::FT_ZeroFill: { 385d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar MCZeroFillFragment &ZFF = cast<MCZeroFillFragment>(F); 386d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 387d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Align the fragment offset; it is safe to adjust the offset freely since 388d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // this is only in virtual sections. 38937fad5ce4d81fd459fafe1517d6cd17e7ab49958Daniel Dunbar Address = RoundUpToAlignment(Address, ZFF.getAlignment()); 390207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar F.setOffset(Address - StartAddress); 391d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 392d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // FIXME: This is misnamed. 393d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar F.setFileSize(ZFF.getSize()); 394d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar break; 395d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 396d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 397d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 3986742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Address += F.getFileSize(); 3990705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4000705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4016742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Set the section sizes. 402207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar SD.setSize(Address - StartAddress); 403cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD.getSection())) 404d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar SD.setFileSize(0); 405d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar else 406207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar SD.setFileSize(Address - StartAddress); 4070705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 4080705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 40953b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar/// WriteFragmentData - Write the \arg F data to the output file. 4108f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbarstatic void WriteFragmentData(const MCAssembler &Asm, const MCFragment &F, 4118f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar MCObjectWriter *OW) { 41253b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar uint64_t Start = OW->getStream().tell(); 4130705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar (void) Start; 4147eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 415ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar ++stats::EmittedFragments; 4160adcd35f78b89bf70eb634b7f9ac2103516ca2b2Daniel Dunbar 4170705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar // FIXME: Embed in fragments instead? 4180705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar switch (F.getKind()) { 419d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Align: { 420d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCAlignFragment &AF = cast<MCAlignFragment>(F); 421d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar uint64_t Count = AF.getFileSize() / AF.getValueSize(); 422d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 423d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // FIXME: This error shouldn't actually occur (the front end should emit 424d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // multiple .align directives to enforce the semantics it wants), but is 425d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar // severe enough that we want to report it. How to handle this? 426d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar if (Count * AF.getValueSize() != AF.getFileSize()) 4277eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar llvm_report_error("undefined .align directive, value size '" + 4287eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar Twine(AF.getValueSize()) + 429d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar "' is not a divisor of padding size '" + 430d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar Twine(AF.getFileSize()) + "'"); 431d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 4326e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // See if we are aligning with nops, and if so do that first to try to fill 4336e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // the Count bytes. Then if that did not fill any bytes or there are any 4346e72048add2a6464e038121c6c275da37528aa0aKevin Enderby // bytes left to fill use the the Value and ValueSize to fill the rest. 4358f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar // If we are aligning with nops, ask that target to emit the right data. 4366e72048add2a6464e038121c6c275da37528aa0aKevin Enderby if (AF.getEmitNops()) { 4378f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar if (!Asm.getBackend().WriteNopData(Count, OW)) 4388f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar llvm_report_error("unable to write nop sequence of " + 4398f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar Twine(Count) + " bytes"); 4408f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar break; 4416e72048add2a6464e038121c6c275da37528aa0aKevin Enderby } 4426e72048add2a6464e038121c6c275da37528aa0aKevin Enderby 4438f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar // Otherwise, write out in multiples of the value size. 444d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar for (uint64_t i = 0; i != Count; ++i) { 445d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar switch (AF.getValueSize()) { 446d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar default: 447d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar assert(0 && "Invalid size!"); 448bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 1: OW->Write8 (uint8_t (AF.getValue())); break; 449bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 2: OW->Write16(uint16_t(AF.getValue())); break; 450bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 4: OW->Write32(uint32_t(AF.getValue())); break; 451bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 8: OW->Write64(uint64_t(AF.getValue())); break; 452d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 453d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 454d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 455d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 4560705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4573a30b827a5c9bf0ed8f31177b6e447083ce9afecDaniel Dunbar case MCFragment::FT_Data: { 4583f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCDataFragment &DF = cast<MCDataFragment>(F); 4593f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar assert(DF.getFileSize() == DF.getContents().size() && "Invalid size!"); 4603f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OW->WriteBytes(DF.getContents().str()); 4610705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar break; 4623a30b827a5c9bf0ed8f31177b6e447083ce9afecDaniel Dunbar } 4630705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 4640705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar case MCFragment::FT_Fill: { 4650705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar MCFillFragment &FF = cast<MCFillFragment>(F); 4660705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar for (uint64_t i = 0, e = FF.getCount(); i != e; ++i) { 4670705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar switch (FF.getValueSize()) { 4680705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar default: 4690705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar assert(0 && "Invalid size!"); 470bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 1: OW->Write8 (uint8_t (FF.getValue())); break; 471bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 2: OW->Write16(uint16_t(FF.getValue())); break; 472bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 4: OW->Write32(uint32_t(FF.getValue())); break; 473bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar case 8: OW->Write64(uint64_t(FF.getValue())); break; 4740705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4750705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4760705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar break; 4770705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4787eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 4793f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar case MCFragment::FT_Inst: 4803f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm_unreachable("unexpected inst fragment after lowering"); 4813f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar break; 4823f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 483d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar case MCFragment::FT_Org: { 484d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar MCOrgFragment &OF = cast<MCOrgFragment>(F); 485d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 486d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar for (uint64_t i = 0, e = OF.getFileSize(); i != e; ++i) 487bdd9281f356d326155dc2ca5585a708e09e90600Daniel Dunbar OW->Write8(uint8_t(OF.getValue())); 488d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar 489d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar break; 490d6f761e0eb610936a6b8495360b62696dcd85164Daniel Dunbar } 491d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 492d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar case MCFragment::FT_ZeroFill: { 493d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar assert(0 && "Invalid zero fill fragment in concrete section!"); 494d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar break; 495d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 4960705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar } 4970705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 49853b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(OW->getStream().tell() - Start == F.getFileSize()); 4990705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 5000705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 50153b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbarvoid MCAssembler::WriteSectionData(const MCSectionData *SD, 50253b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar MCObjectWriter *OW) const { 503d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Ignore virtual sections. 504cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD->getSection())) { 50553b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(SD->getFileSize() == 0); 506d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar return; 507d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 508d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 50953b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar uint64_t Start = OW->getStream().tell(); 5100705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar (void) Start; 5117eb85194f2b07bc7ba3f274fc00dc389b77b63bfDaniel Dunbar 51253b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar for (MCSectionData::const_iterator it = SD->begin(), 51353b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar ie = SD->end(); it != ie; ++it) 5148f9b80e5df12779a56d763ebf20864dad2bc72daDaniel Dunbar WriteFragmentData(*this, *it, OW); 5150705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 5166742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Add section padding. 51753b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(SD->getFileSize() >= SD->getSize() && "Invalid section sizes!"); 51853b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar OW->WriteZeros(SD->getFileSize() - SD->getSize()); 5196742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 52053b2338a1d061ad15a858ff0d641431f4d4ac101Daniel Dunbar assert(OW->getStream().tell() - Start == SD->getFileSize()); 5210705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar} 5220705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 523fb4a6b397665df011348ade24a8e38d2219f095aDaniel Dunbarvoid MCAssembler::Finish() { 524b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 525b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar llvm::errs() << "assembler backend - pre-layout\n--\n"; 526b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar dump(); }); 527b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 528f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Layout until everything fits. 5298d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar MCAsmLayout Layout(*this); 5308d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar while (LayoutOnce(Layout)) 531f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 532f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 533f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 5343f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm::errs() << "assembler backend - post-relaxation\n--\n"; 5353f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar dump(); }); 5363f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 5373f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Finalize the layout, including fragment lowering. 5383f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar FinishLayout(Layout); 5393f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 5403f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DEBUG_WITH_TYPE("mc-dump", { 5413f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar llvm::errs() << "assembler backend - final-layout\n--\n"; 542f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar dump(); }); 543f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 544ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar uint64_t StartOffset = OS.tell(); 5451a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar llvm::OwningPtr<MCObjectWriter> Writer(getBackend().createObjectWriter(OS)); 5461a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar if (!Writer) 5471a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar llvm_report_error("unable to create object writer!"); 548bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar 549bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // Allow the object writer a chance to perform post-layout binding (for 550bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // example, to set the index fields in the symbol data). 5511a9158c301b58d8119664f416461d5a5549170c4Daniel Dunbar Writer->ExecutePostLayoutBinding(*this); 552bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar 553b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // Evaluate and apply the fixups, generating relocation entries as necessary. 554b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCAssembler::iterator it = begin(), ie = end(); it != ie; ++it) { 555b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCSectionData::iterator it2 = it->begin(), 556b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar ie2 = it->end(); it2 != ie2; ++it2) { 557b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCDataFragment *DF = dyn_cast<MCDataFragment>(it2); 558b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar if (!DF) 559b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar continue; 560b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 561b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar for (MCDataFragment::fixup_iterator it3 = DF->fixup_begin(), 562b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar ie3 = DF->fixup_end(); it3 != ie3; ++it3) { 563b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCAsmFixup &Fixup = *it3; 564b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 565b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // Evaluate the fixup. 566b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar MCValue Target; 567b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar uint64_t FixedValue; 568b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar if (!EvaluateFixup(Layout, Fixup, DF, Target, FixedValue)) { 569b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // The fixup was unresolved, we need a relocation. Inform the object 570b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // writer of the relocation, and give it an opportunity to adjust the 571b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar // fixup value if need be. 572207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Writer->RecordRelocation(*this, Layout, DF, Fixup, Target,FixedValue); 573b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 574b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 57587190c473c216e481e0a70475577e496b3a3449eDaniel Dunbar getBackend().ApplyFixup(Fixup, *DF, FixedValue); 576b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 577b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 578b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar } 579b1e98945e4b107eb3f2ac1b54706c49864842dc4Daniel Dunbar 580bacba997782f624d3c43591a913b8f1e3d733a52Daniel Dunbar // Write the object file. 581207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Writer->WriteObject(*this, Layout); 582f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar OS.flush(); 583ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar 584ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar stats::ObjectBytes += OS.tell() - StartOffset; 585f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 586f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 5879d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbarbool MCAssembler::FixupNeedsRelaxation(const MCAsmFixup &Fixup, 5889d39e616cc0f43e91e509e5c8129c7d46327fd0dDaniel Dunbar const MCFragment *DF, 5898d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar const MCAsmLayout &Layout) const { 590f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // If we cannot resolve the fixup value, it requires relaxation. 591f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCValue Target; 592f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar uint64_t Value; 593f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar if (!EvaluateFixup(Layout, Fixup, DF, Target, Value)) 594f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return true; 595f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 596f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar // Otherwise, relax if the value is too big for a (signed) i8. 597f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return int64_t(Value) != int64_t(int8_t(Value)); 598f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 599f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 600d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbarbool MCAssembler::FragmentNeedsRelaxation(const MCInstFragment *IF, 601d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar const MCAsmLayout &Layout) const { 602d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // If this inst doesn't ever need relaxation, ignore it. This occurs when we 603d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // are intentionally pushing out inst fragments, or because we relaxed a 604d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // previous instruction to one that doesn't need relaxation. 605d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar if (!getBackend().MayNeedRelaxation(IF->getInst(), IF->getFixups())) 606d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar return false; 607d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 608d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar for (MCInstFragment::const_fixup_iterator it = IF->fixup_begin(), 609d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar ie = IF->fixup_end(); it != ie; ++it) 610d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar if (FixupNeedsRelaxation(*it, IF, Layout)) 611d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar return true; 612d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 613d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar return false; 614d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar} 615d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 6168d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbarbool MCAssembler::LayoutOnce(MCAsmLayout &Layout) { 617ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar ++stats::RelaxationSteps; 618ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar 619d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Layout the concrete sections and fragments. 6205e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar uint64_t Address = 0; 621edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar MCSectionData *Prev = 0; 622edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 6236742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar MCSectionData &SD = *it; 6246742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 625d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Skip virtual sections. 626cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (getBackend().isVirtualSection(SD.getSection())) 627d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar continue; 628d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 629edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar // Align this section if necessary by adding padding bytes to the previous 630edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar // section. 631edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar if (uint64_t Pad = OffsetToAlignment(Address, it->getAlignment())) { 632edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar assert(Prev && "Missing prev section!"); 633edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Prev->setFileSize(Prev->getFileSize() + Pad); 634edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Address += Pad; 635edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar } 6366742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar 6376742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar // Layout the section fragments and its size. 638207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Layout.setSectionAddress(&SD, Address); 6398d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar LayoutSection(SD, Layout); 6406742e34385bff89b897ef0fc930c4bca9e75ac4aDaniel Dunbar Address += SD.getFileSize(); 641edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar 642edc670f3f2ba629b6803a1a7ed4aa47061afd276Daniel Dunbar Prev = &SD; 6435e835967dd5dda294d0ef3392f4c1d4a2260f532Daniel Dunbar } 6440705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 645d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar // Layout the virtual sections. 646d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 647d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar MCSectionData &SD = *it; 648d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 649cc5b84c6fba79a798e86ea604e54ca9429273a13Daniel Dunbar if (!getBackend().isVirtualSection(SD.getSection())) 650d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar continue; 651d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 652b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar // Align this section if necessary by adding padding bytes to the previous 653b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar // section. 654f8b8ad77a8b5632886a4cfe41d798bae7277efcbDaniel Dunbar if (uint64_t Pad = OffsetToAlignment(Address, it->getAlignment())) 655b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar Address += Pad; 656b2b4acd757194b4b75e571ec7225811f94e753f3Daniel Dunbar 657207e06ea0446c51cb1d89f6400ec7becc46487f8Daniel Dunbar Layout.setSectionAddress(&SD, Address); 6588d39eb47d6a15d36be7ac0d0154a6897e42f5adcDaniel Dunbar LayoutSection(SD, Layout); 659d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar Address += SD.getSize(); 660d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar } 661d5a8e98ef627a35284c9b5989664514f8f163968Daniel Dunbar 662d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // Scan for fragments that need relaxation. 663f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 664f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar MCSectionData &SD = *it; 665b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 666f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar for (MCSectionData::iterator it2 = SD.begin(), 667f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar ie2 = SD.end(); it2 != ie2; ++it2) { 668d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // Check if this is an instruction fragment that needs relaxation. 669d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar MCInstFragment *IF = dyn_cast<MCInstFragment>(it2); 670d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar if (!IF || !FragmentNeedsRelaxation(IF, Layout)) 671f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar continue; 6720705fbf52fcaade0c6b9d5d33bec163ee4c2daf4Daniel Dunbar 673ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar ++stats::RelaxedInstructions; 674ff54784683591b2cdbdc18690aeac12c8d87f97bDaniel Dunbar 675d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // FIXME-PERF: We could immediately lower out instructions if we can tell 676d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // they are fully resolved, to avoid retesting on later passes. 677f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 678d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // Relax the fragment. 679d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 680d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar MCInst Relaxed; 681d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar getBackend().RelaxInstruction(IF, Relaxed); 682f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 683d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // Encode the new instruction. 684d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // 685d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // FIXME-PERF: If it matters, we could let the target do this. It can 686d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // probably do so more efficiently in many cases. 687d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar SmallVector<MCFixup, 4> Fixups; 688d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar SmallString<256> Code; 689d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar raw_svector_ostream VecOS(Code); 690d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar getEmitter().EncodeInstruction(Relaxed, VecOS, Fixups); 691d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar VecOS.flush(); 692d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 693d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // Update the instruction fragment. 694d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar IF->setInst(Relaxed); 695d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar IF->getCode() = Code; 696d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar IF->getFixups().clear(); 697d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar for (unsigned i = 0, e = Fixups.size(); i != e; ++i) { 698d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar MCFixup &F = Fixups[i]; 699d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar IF->getFixups().push_back(MCAsmFixup(F.getOffset(), *F.getValue(), 700d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar F.getKind())); 701f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 702d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar 703d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // Restart layout. 704d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // 705d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // FIXME-PERF: This is O(N^2), but will be eliminated once we have a 706d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar // smart MCAsmLayout object. 707d8036fb0deb7daff7959b0a5407c8a45acb5e603Daniel Dunbar return true; 708f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 709f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar } 710f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar 711f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar return false; 712f08fde41f34d739c157b1d75dadbb864e7957cabDaniel Dunbar} 713b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 7143f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbarvoid MCAssembler::FinishLayout(MCAsmLayout &Layout) { 7153f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Lower out any instruction fragments, to simplify the fixup application and 7163f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // output. 7173f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // 7183f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // FIXME-PERF: We don't have to do this, but the assumption is that it is 7193f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // cheap (we will mostly end up eliminating fragments and appending on to data 7203f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // fragments), so the extra complexity downstream isn't worth it. Evaluate 7213f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // this assumption. 7223f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 7233f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCSectionData &SD = *it; 7243f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7253f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar for (MCSectionData::iterator it2 = SD.begin(), 7263f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar ie2 = SD.end(); it2 != ie2; ++it2) { 7273f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCInstFragment *IF = dyn_cast<MCInstFragment>(it2); 7283f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar if (!IF) 7293f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar continue; 7303f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7313f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Create a new data fragment for the instruction. 7323f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // 733337055e62f28f18a9a8c4a090633cae1c2256ae1Daniel Dunbar // FIXME-PERF: Reuse previous data fragment if possible. 7343f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar MCDataFragment *DF = new MCDataFragment(); 7353f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar SD.getFragmentList().insert(it2, DF); 7363f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7373f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Update the data fragments layout data. 7389799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->setParent(IF->getParent()); 7393f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DF->setOffset(IF->getOffset()); 7403f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar DF->setFileSize(IF->getInstSize()); 7413f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7429799de910e97879bf9f30f359551071a94d61570Daniel Dunbar // Copy in the data and the fixups. 7439799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->getContents().append(IF->getCode().begin(), IF->getCode().end()); 7449799de910e97879bf9f30f359551071a94d61570Daniel Dunbar for (unsigned i = 0, e = IF->getFixups().size(); i != e; ++i) 7459799de910e97879bf9f30f359551071a94d61570Daniel Dunbar DF->getFixups().push_back(IF->getFixups()[i]); 7463f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 7473f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar // Delete the instruction fragment and update the iterator. 7483f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar SD.getFragmentList().erase(IF); 7493f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar it2 = DF; 7503f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar } 7513f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar } 7523f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar} 7533f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 754b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar// Debugging methods 755b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 756b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarnamespace llvm { 757b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 758b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarraw_ostream &operator<<(raw_ostream &OS, const MCAsmFixup &AF) { 7592be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar OS << "<MCAsmFixup" << " Offset:" << AF.Offset << " Value:" << *AF.Value 7602be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar << " Kind:" << AF.Kind << ">"; 761b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar return OS; 762b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 763b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 764b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 765b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 766b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCFragment::dump() { 767b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 768b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 769b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCFragment " << (void*) this << " Offset:" << Offset 770b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " FileSize:" << FileSize; 771b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 772b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << ">"; 773b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 774b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 775b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCAlignFragment::dump() { 776b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 777b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 778b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCAlignFragment "; 779b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 780b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 781b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Alignment:" << getAlignment() 782b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Value:" << getValue() << " ValueSize:" << getValueSize() 783b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " MaxBytesToEmit:" << getMaxBytesToEmit() << ">"; 784b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 785b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 786b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCDataFragment::dump() { 787b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 788b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 789b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCDataFragment "; 790b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 791b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 792b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Contents:["; 793b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (unsigned i = 0, e = getContents().size(); i != e; ++i) { 794b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (i) OS << ","; 795b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << hexdigit((Contents[i] >> 4) & 0xF) << hexdigit(Contents[i] & 0xF); 796b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 7972be2fd073003c0988723d2894dfb117ad90be11bDaniel Dunbar OS << "] (" << getContents().size() << " bytes)"; 7980bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar 7990bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar if (!getFixups().empty()) { 8000bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << ",\n "; 8010bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << " Fixups:["; 8020bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar for (fixup_iterator it = fixup_begin(), ie = fixup_end(); it != ie; ++it) { 80345aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar if (it != fixup_begin()) OS << ",\n "; 8040bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << *it; 8050bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar } 8060bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << "]"; 8070bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar } 8080bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar 8090bcf074867d4d366f7988a219c7a53265fcb4f23Daniel Dunbar OS << ">"; 810b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 811b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 812b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCFillFragment::dump() { 813b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 814b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 815b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCFillFragment "; 816b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 817b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 818b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Value:" << getValue() << " ValueSize:" << getValueSize() 819b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Count:" << getCount() << ">"; 820b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 821b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 8223f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbarvoid MCInstFragment::dump() { 8233f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar raw_ostream &OS = llvm::errs(); 8243f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 8253f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << "<MCInstFragment "; 8263f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar this->MCFragment::dump(); 8273f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << "\n "; 8283f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << " Inst:"; 8293f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar getInst().dump_pretty(OS); 8303f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar OS << ">"; 8313f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar} 8323f4dcd92daef80f87919507b6baf2a97d4bfaa2eDaniel Dunbar 833b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCOrgFragment::dump() { 834b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 835b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 836b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCOrgFragment "; 837b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 838b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 839b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Offset:" << getOffset() << " Value:" << getValue() << ">"; 840b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 841b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 842b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCZeroFillFragment::dump() { 843b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 844b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 845b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCZeroFillFragment "; 846b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar this->MCFragment::dump(); 847b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "\n "; 848b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Size:" << getSize() << " Alignment:" << getAlignment() << ">"; 849b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 850b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 851b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCSectionData::dump() { 852b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 853b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 854b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCSectionData"; 855b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Alignment:" << getAlignment() << " Address:" << Address 856b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Size:" << Size << " FileSize:" << FileSize 85745aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar << " Fragments:[\n "; 858b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 859b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (it != begin()) OS << ",\n "; 860b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 861b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 862b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "]>"; 863b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 864b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 865b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCSymbolData::dump() { 866b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 867b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 868b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCSymbolData Symbol:" << getSymbol() 869b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Fragment:" << getFragment() << " Offset:" << getOffset() 870b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " Flags:" << getFlags() << " Index:" << getIndex(); 871b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isCommon()) 872b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (common, size:" << getCommonSize() 873b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar << " align: " << getCommonAlignment() << ")"; 874b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isExternal()) 875b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (external)"; 876b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (isPrivateExtern()) 877b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " (private extern)"; 878b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << ">"; 879b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 880b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 881b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbarvoid MCAssembler::dump() { 882b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar raw_ostream &OS = llvm::errs(); 883b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 884b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "<MCAssembler\n"; 88545aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar OS << " Sections:[\n "; 886b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (iterator it = begin(), ie = end(); it != ie; ++it) { 887b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar if (it != begin()) OS << ",\n "; 888b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 889b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 890b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "],\n"; 891b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << " Symbols:["; 892b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar 893b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar for (symbol_iterator it = symbol_begin(), ie = symbol_end(); it != ie; ++it) { 89445aefff64c64d5bd7804f39d994883b98ce4415aDaniel Dunbar if (it != symbol_begin()) OS << ",\n "; 895b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar it->dump(); 896b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar } 897b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar OS << "]>\n"; 898b7c3a4b195597848e7c2559937914ae1087f3131Daniel Dunbar} 899