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| 1 //===- subzero/src/IceFixups.cpp - Implementation of Assembler Fixups -----===// | 1 //===- subzero/src/IceFixups.cpp - Implementation of Assembler Fixups -----===// |
| 2 // | 2 // |
| 3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
| 4 // | 4 // |
| 5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
| 7 // | 7 // |
| 8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
| 9 /// | 9 /// |
| 10 /// \file | 10 /// \file |
| (...skipping 13 matching lines...) Expand all Loading... |
| 24 RelocOffsetT AssemblerFixup::offset() const { | 24 RelocOffsetT AssemblerFixup::offset() const { |
| 25 if (isNullSymbol()) | 25 if (isNullSymbol()) |
| 26 return addend_; | 26 return addend_; |
| 27 if (!ValueIsSymbol) { | 27 if (!ValueIsSymbol) { |
| 28 if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(ConstValue)) | 28 if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(ConstValue)) |
| 29 return CR->getOffset() + addend_; | 29 return CR->getOffset() + addend_; |
| 30 } | 30 } |
| 31 return addend_; | 31 return addend_; |
| 32 } | 32 } |
| 33 | 33 |
| 34 IceString AssemblerFixup::symbol() const { | 34 GlobalString AssemblerFixup::symbol() const { |
| 35 assert(!isNullSymbol()); | 35 assert(!isNullSymbol()); |
| 36 assert(!ValueIsSymbol); | 36 assert(!ValueIsSymbol); |
| 37 const Constant *C = ConstValue; | 37 const Constant *C = ConstValue; |
| 38 if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(C)) { | 38 if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(C)) { |
| 39 return CR->getName(); | 39 return CR->getName(); |
| 40 } | 40 } |
| 41 // NOTE: currently only float/doubles are put into constant pools. In the | 41 // NOTE: currently only float/doubles are put into constant pools. In the |
| 42 // future we may put integers as well. | 42 // future we may put integers as well. |
| 43 assert(llvm::isa<ConstantFloat>(C) || llvm::isa<ConstantDouble>(C)); | 43 assert(llvm::isa<ConstantFloat>(C) || llvm::isa<ConstantDouble>(C)); |
| 44 std::string Buffer; | 44 return C->getLabelName(); |
| 45 llvm::raw_string_ostream Str(Buffer); | |
| 46 C->emitPoolLabel(Str); | |
| 47 return Str.str(); | |
| 48 } | 45 } |
| 49 | 46 |
| 50 size_t AssemblerFixup::emit(GlobalContext *Ctx, const Assembler &Asm) const { | 47 size_t AssemblerFixup::emit(GlobalContext *Ctx, const Assembler &Asm) const { |
| 51 static constexpr const size_t FixupSize = 4; | 48 static constexpr const size_t FixupSize = 4; |
| 52 if (!BuildDefs::dump()) | 49 if (!BuildDefs::dump()) |
| 53 return FixupSize; | 50 return FixupSize; |
| 54 Ostream &Str = Ctx->getStrEmit(); | 51 Ostream &Str = Ctx->getStrEmit(); |
| 55 Str << "\t.long "; | 52 Str << "\t.long "; |
| 56 IceString Symbol; | 53 std::string Symbol; |
| 57 if (isNullSymbol()) { | 54 if (isNullSymbol()) { |
| 58 Str << "__Sz_AbsoluteZero"; | 55 Str << "__Sz_AbsoluteZero"; |
| 59 } else { | 56 } else { |
| 60 Symbol = symbol(); | 57 Symbol = symbol().toString(); |
| 61 Str << Symbol; | 58 Str << Symbol; |
| 62 assert(!ValueIsSymbol); | 59 assert(!ValueIsSymbol); |
| 63 if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(ConstValue)) { | 60 if (const auto *CR = llvm::dyn_cast<ConstantRelocatable>(ConstValue)) { |
| 64 if (!Asm.fixupIsPCRel(kind()) && | 61 if (!Asm.fixupIsPCRel(kind()) && |
| 65 GlobalContext::getFlags().getUseNonsfi() && | 62 GlobalContext::getFlags().getUseNonsfi() && |
| 66 CR->getName() != GlobalOffsetTable) { | 63 CR->getName().toString() != GlobalOffsetTable) { |
| 67 Str << "@GOTOFF"; | 64 Str << "@GOTOFF"; |
| 68 } | 65 } |
| 69 } | 66 } |
| 70 } | 67 } |
| 71 | 68 |
| 72 assert(Asm.load<RelocOffsetT>(position()) == 0); | 69 assert(Asm.load<RelocOffsetT>(position()) == 0); |
| 73 | 70 |
| 74 RelocOffsetT Offset = offset(); | 71 RelocOffsetT Offset = offset(); |
| 75 if (Offset != 0) { | 72 if (Offset != 0) { |
| 76 if (Offset > 0) { | 73 if (Offset > 0) { |
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| 93 void AssemblerFixup::emitOffset(Assembler *Asm) const { | 90 void AssemblerFixup::emitOffset(Assembler *Asm) const { |
| 94 Asm->store(position(), offset()); | 91 Asm->store(position(), offset()); |
| 95 } | 92 } |
| 96 | 93 |
| 97 size_t AssemblerTextFixup::emit(GlobalContext *Ctx, const Assembler &) const { | 94 size_t AssemblerTextFixup::emit(GlobalContext *Ctx, const Assembler &) const { |
| 98 Ctx->getStrEmit() << Message << "\n"; | 95 Ctx->getStrEmit() << Message << "\n"; |
| 99 return NumBytes; | 96 return NumBytes; |
| 100 } | 97 } |
| 101 | 98 |
| 102 } // end of namespace Ice | 99 } // end of namespace Ice |
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