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authorpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
committerpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
commitb64793999546ed8adebaeebd9d8345d18db8927d (patch)
tree4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/lib/ObjectYAML/DWARFEmitter.cpp
parentAdd support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff)
downloadwireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.tar.xz
wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.zip
Remove LLVM 8.0.1 files.
Diffstat (limited to 'gnu/llvm/lib/ObjectYAML/DWARFEmitter.cpp')
-rw-r--r--gnu/llvm/lib/ObjectYAML/DWARFEmitter.cpp379
1 files changed, 0 insertions, 379 deletions
diff --git a/gnu/llvm/lib/ObjectYAML/DWARFEmitter.cpp b/gnu/llvm/lib/ObjectYAML/DWARFEmitter.cpp
deleted file mode 100644
index f23fa123760..00000000000
--- a/gnu/llvm/lib/ObjectYAML/DWARFEmitter.cpp
+++ /dev/null
@@ -1,379 +0,0 @@
-//===- DWARFEmitter - Convert YAML to DWARF binary data -------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// The DWARF component of yaml2obj. Provided as library code for tests.
-///
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ObjectYAML/DWARFEmitter.h"
-#include "DWARFVisitor.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ObjectYAML/DWARFYAML.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/Host.h"
-#include "llvm/Support/LEB128.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/SwapByteOrder.h"
-#include "llvm/Support/YAMLTraits.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cassert>
-#include <cstddef>
-#include <cstdint>
-#include <memory>
-#include <string>
-#include <vector>
-
-using namespace llvm;
-
-template <typename T>
-static void writeInteger(T Integer, raw_ostream &OS, bool IsLittleEndian) {
- if (IsLittleEndian != sys::IsLittleEndianHost)
- sys::swapByteOrder(Integer);
- OS.write(reinterpret_cast<char *>(&Integer), sizeof(T));
-}
-
-static void writeVariableSizedInteger(uint64_t Integer, size_t Size,
- raw_ostream &OS, bool IsLittleEndian) {
- if (8 == Size)
- writeInteger((uint64_t)Integer, OS, IsLittleEndian);
- else if (4 == Size)
- writeInteger((uint32_t)Integer, OS, IsLittleEndian);
- else if (2 == Size)
- writeInteger((uint16_t)Integer, OS, IsLittleEndian);
- else if (1 == Size)
- writeInteger((uint8_t)Integer, OS, IsLittleEndian);
- else
- assert(false && "Invalid integer write size.");
-}
-
-static void ZeroFillBytes(raw_ostream &OS, size_t Size) {
- std::vector<uint8_t> FillData;
- FillData.insert(FillData.begin(), Size, 0);
- OS.write(reinterpret_cast<char *>(FillData.data()), Size);
-}
-
-static void writeInitialLength(const DWARFYAML::InitialLength &Length,
- raw_ostream &OS, bool IsLittleEndian) {
- writeInteger((uint32_t)Length.TotalLength, OS, IsLittleEndian);
- if (Length.isDWARF64())
- writeInteger((uint64_t)Length.TotalLength64, OS, IsLittleEndian);
-}
-
-void DWARFYAML::EmitDebugStr(raw_ostream &OS, const DWARFYAML::Data &DI) {
- for (auto Str : DI.DebugStrings) {
- OS.write(Str.data(), Str.size());
- OS.write('\0');
- }
-}
-
-void DWARFYAML::EmitDebugAbbrev(raw_ostream &OS, const DWARFYAML::Data &DI) {
- for (auto AbbrevDecl : DI.AbbrevDecls) {
- encodeULEB128(AbbrevDecl.Code, OS);
- encodeULEB128(AbbrevDecl.Tag, OS);
- OS.write(AbbrevDecl.Children);
- for (auto Attr : AbbrevDecl.Attributes) {
- encodeULEB128(Attr.Attribute, OS);
- encodeULEB128(Attr.Form, OS);
- if (Attr.Form == dwarf::DW_FORM_implicit_const)
- encodeSLEB128(Attr.Value, OS);
- }
- encodeULEB128(0, OS);
- encodeULEB128(0, OS);
- }
-}
-
-void DWARFYAML::EmitDebugAranges(raw_ostream &OS, const DWARFYAML::Data &DI) {
- for (auto Range : DI.ARanges) {
- auto HeaderStart = OS.tell();
- writeInitialLength(Range.Length, OS, DI.IsLittleEndian);
- writeInteger((uint16_t)Range.Version, OS, DI.IsLittleEndian);
- writeInteger((uint32_t)Range.CuOffset, OS, DI.IsLittleEndian);
- writeInteger((uint8_t)Range.AddrSize, OS, DI.IsLittleEndian);
- writeInteger((uint8_t)Range.SegSize, OS, DI.IsLittleEndian);
-
- auto HeaderSize = OS.tell() - HeaderStart;
- auto FirstDescriptor = alignTo(HeaderSize, Range.AddrSize * 2);
- ZeroFillBytes(OS, FirstDescriptor - HeaderSize);
-
- for (auto Descriptor : Range.Descriptors) {
- writeVariableSizedInteger(Descriptor.Address, Range.AddrSize, OS,
- DI.IsLittleEndian);
- writeVariableSizedInteger(Descriptor.Length, Range.AddrSize, OS,
- DI.IsLittleEndian);
- }
- ZeroFillBytes(OS, Range.AddrSize * 2);
- }
-}
-
-void DWARFYAML::EmitPubSection(raw_ostream &OS,
- const DWARFYAML::PubSection &Sect,
- bool IsLittleEndian) {
- writeInitialLength(Sect.Length, OS, IsLittleEndian);
- writeInteger((uint16_t)Sect.Version, OS, IsLittleEndian);
- writeInteger((uint32_t)Sect.UnitOffset, OS, IsLittleEndian);
- writeInteger((uint32_t)Sect.UnitSize, OS, IsLittleEndian);
- for (auto Entry : Sect.Entries) {
- writeInteger((uint32_t)Entry.DieOffset, OS, IsLittleEndian);
- if (Sect.IsGNUStyle)
- writeInteger((uint32_t)Entry.Descriptor, OS, IsLittleEndian);
- OS.write(Entry.Name.data(), Entry.Name.size());
- OS.write('\0');
- }
-}
-
-namespace {
-/// An extension of the DWARFYAML::ConstVisitor which writes compile
-/// units and DIEs to a stream.
-class DumpVisitor : public DWARFYAML::ConstVisitor {
- raw_ostream &OS;
-
-protected:
- void onStartCompileUnit(const DWARFYAML::Unit &CU) override {
- writeInitialLength(CU.Length, OS, DebugInfo.IsLittleEndian);
- writeInteger((uint16_t)CU.Version, OS, DebugInfo.IsLittleEndian);
- if(CU.Version >= 5) {
- writeInteger((uint8_t)CU.Type, OS, DebugInfo.IsLittleEndian);
- writeInteger((uint8_t)CU.AddrSize, OS, DebugInfo.IsLittleEndian);
- writeInteger((uint32_t)CU.AbbrOffset, OS, DebugInfo.IsLittleEndian);
- }else {
- writeInteger((uint32_t)CU.AbbrOffset, OS, DebugInfo.IsLittleEndian);
- writeInteger((uint8_t)CU.AddrSize, OS, DebugInfo.IsLittleEndian);
- }
- }
-
- void onStartDIE(const DWARFYAML::Unit &CU,
- const DWARFYAML::Entry &DIE) override {
- encodeULEB128(DIE.AbbrCode, OS);
- }
-
- void onValue(const uint8_t U) override {
- writeInteger(U, OS, DebugInfo.IsLittleEndian);
- }
-
- void onValue(const uint16_t U) override {
- writeInteger(U, OS, DebugInfo.IsLittleEndian);
- }
-
- void onValue(const uint32_t U) override {
- writeInteger(U, OS, DebugInfo.IsLittleEndian);
- }
-
- void onValue(const uint64_t U, const bool LEB = false) override {
- if (LEB)
- encodeULEB128(U, OS);
- else
- writeInteger(U, OS, DebugInfo.IsLittleEndian);
- }
-
- void onValue(const int64_t S, const bool LEB = false) override {
- if (LEB)
- encodeSLEB128(S, OS);
- else
- writeInteger(S, OS, DebugInfo.IsLittleEndian);
- }
-
- void onValue(const StringRef String) override {
- OS.write(String.data(), String.size());
- OS.write('\0');
- }
-
- void onValue(const MemoryBufferRef MBR) override {
- OS.write(MBR.getBufferStart(), MBR.getBufferSize());
- }
-
-public:
- DumpVisitor(const DWARFYAML::Data &DI, raw_ostream &Out)
- : DWARFYAML::ConstVisitor(DI), OS(Out) {}
-};
-} // namespace
-
-void DWARFYAML::EmitDebugInfo(raw_ostream &OS, const DWARFYAML::Data &DI) {
- DumpVisitor Visitor(DI, OS);
- Visitor.traverseDebugInfo();
-}
-
-static void EmitFileEntry(raw_ostream &OS, const DWARFYAML::File &File) {
- OS.write(File.Name.data(), File.Name.size());
- OS.write('\0');
- encodeULEB128(File.DirIdx, OS);
- encodeULEB128(File.ModTime, OS);
- encodeULEB128(File.Length, OS);
-}
-
-void DWARFYAML::EmitDebugLine(raw_ostream &OS, const DWARFYAML::Data &DI) {
- for (const auto &LineTable : DI.DebugLines) {
- writeInitialLength(LineTable.Length, OS, DI.IsLittleEndian);
- uint64_t SizeOfPrologueLength = LineTable.Length.isDWARF64() ? 8 : 4;
- writeInteger((uint16_t)LineTable.Version, OS, DI.IsLittleEndian);
- writeVariableSizedInteger(LineTable.PrologueLength, SizeOfPrologueLength,
- OS, DI.IsLittleEndian);
- writeInteger((uint8_t)LineTable.MinInstLength, OS, DI.IsLittleEndian);
- if (LineTable.Version >= 4)
- writeInteger((uint8_t)LineTable.MaxOpsPerInst, OS, DI.IsLittleEndian);
- writeInteger((uint8_t)LineTable.DefaultIsStmt, OS, DI.IsLittleEndian);
- writeInteger((uint8_t)LineTable.LineBase, OS, DI.IsLittleEndian);
- writeInteger((uint8_t)LineTable.LineRange, OS, DI.IsLittleEndian);
- writeInteger((uint8_t)LineTable.OpcodeBase, OS, DI.IsLittleEndian);
-
- for (auto OpcodeLength : LineTable.StandardOpcodeLengths)
- writeInteger((uint8_t)OpcodeLength, OS, DI.IsLittleEndian);
-
- for (auto IncludeDir : LineTable.IncludeDirs) {
- OS.write(IncludeDir.data(), IncludeDir.size());
- OS.write('\0');
- }
- OS.write('\0');
-
- for (auto File : LineTable.Files)
- EmitFileEntry(OS, File);
- OS.write('\0');
-
- for (auto Op : LineTable.Opcodes) {
- writeInteger((uint8_t)Op.Opcode, OS, DI.IsLittleEndian);
- if (Op.Opcode == 0) {
- encodeULEB128(Op.ExtLen, OS);
- writeInteger((uint8_t)Op.SubOpcode, OS, DI.IsLittleEndian);
- switch (Op.SubOpcode) {
- case dwarf::DW_LNE_set_address:
- case dwarf::DW_LNE_set_discriminator:
- writeVariableSizedInteger(Op.Data, DI.CompileUnits[0].AddrSize, OS,
- DI.IsLittleEndian);
- break;
- case dwarf::DW_LNE_define_file:
- EmitFileEntry(OS, Op.FileEntry);
- break;
- case dwarf::DW_LNE_end_sequence:
- break;
- default:
- for (auto OpByte : Op.UnknownOpcodeData)
- writeInteger((uint8_t)OpByte, OS, DI.IsLittleEndian);
- }
- } else if (Op.Opcode < LineTable.OpcodeBase) {
- switch (Op.Opcode) {
- case dwarf::DW_LNS_copy:
- case dwarf::DW_LNS_negate_stmt:
- case dwarf::DW_LNS_set_basic_block:
- case dwarf::DW_LNS_const_add_pc:
- case dwarf::DW_LNS_set_prologue_end:
- case dwarf::DW_LNS_set_epilogue_begin:
- break;
-
- case dwarf::DW_LNS_advance_pc:
- case dwarf::DW_LNS_set_file:
- case dwarf::DW_LNS_set_column:
- case dwarf::DW_LNS_set_isa:
- encodeULEB128(Op.Data, OS);
- break;
-
- case dwarf::DW_LNS_advance_line:
- encodeSLEB128(Op.SData, OS);
- break;
-
- case dwarf::DW_LNS_fixed_advance_pc:
- writeInteger((uint16_t)Op.Data, OS, DI.IsLittleEndian);
- break;
-
- default:
- for (auto OpData : Op.StandardOpcodeData) {
- encodeULEB128(OpData, OS);
- }
- }
- }
- }
- }
-}
-
-using EmitFuncType = void (*)(raw_ostream &, const DWARFYAML::Data &);
-
-static void
-EmitDebugSectionImpl(const DWARFYAML::Data &DI, EmitFuncType EmitFunc,
- StringRef Sec,
- StringMap<std::unique_ptr<MemoryBuffer>> &OutputBuffers) {
- std::string Data;
- raw_string_ostream DebugInfoStream(Data);
- EmitFunc(DebugInfoStream, DI);
- DebugInfoStream.flush();
- if (!Data.empty())
- OutputBuffers[Sec] = MemoryBuffer::getMemBufferCopy(Data);
-}
-
-namespace {
-class DIEFixupVisitor : public DWARFYAML::Visitor {
- uint64_t Length;
-
-public:
- DIEFixupVisitor(DWARFYAML::Data &DI) : DWARFYAML::Visitor(DI){};
-
-private:
- virtual void onStartCompileUnit(DWARFYAML::Unit &CU) { Length = 7; }
-
- virtual void onEndCompileUnit(DWARFYAML::Unit &CU) {
- CU.Length.setLength(Length);
- }
-
- virtual void onStartDIE(DWARFYAML::Unit &CU, DWARFYAML::Entry &DIE) {
- Length += getULEB128Size(DIE.AbbrCode);
- }
-
- virtual void onValue(const uint8_t U) { Length += 1; }
- virtual void onValue(const uint16_t U) { Length += 2; }
- virtual void onValue(const uint32_t U) { Length += 4; }
- virtual void onValue(const uint64_t U, const bool LEB = false) {
- if (LEB)
- Length += getULEB128Size(U);
- else
- Length += 8;
- }
- virtual void onValue(const int64_t S, const bool LEB = false) {
- if (LEB)
- Length += getSLEB128Size(S);
- else
- Length += 8;
- }
- virtual void onValue(const StringRef String) { Length += String.size() + 1; }
-
- virtual void onValue(const MemoryBufferRef MBR) {
- Length += MBR.getBufferSize();
- }
-};
-} // namespace
-
-Expected<StringMap<std::unique_ptr<MemoryBuffer>>>
-DWARFYAML::EmitDebugSections(StringRef YAMLString, bool ApplyFixups,
- bool IsLittleEndian) {
- yaml::Input YIn(YAMLString);
-
- DWARFYAML::Data DI;
- DI.IsLittleEndian = IsLittleEndian;
- YIn >> DI;
- if (YIn.error())
- return errorCodeToError(YIn.error());
-
- if (ApplyFixups) {
- DIEFixupVisitor DIFixer(DI);
- DIFixer.traverseDebugInfo();
- }
-
- StringMap<std::unique_ptr<MemoryBuffer>> DebugSections;
- EmitDebugSectionImpl(DI, &DWARFYAML::EmitDebugInfo, "debug_info",
- DebugSections);
- EmitDebugSectionImpl(DI, &DWARFYAML::EmitDebugLine, "debug_line",
- DebugSections);
- EmitDebugSectionImpl(DI, &DWARFYAML::EmitDebugStr, "debug_str",
- DebugSections);
- EmitDebugSectionImpl(DI, &DWARFYAML::EmitDebugAbbrev, "debug_abbrev",
- DebugSections);
- EmitDebugSectionImpl(DI, &DWARFYAML::EmitDebugAranges, "debug_aranges",
- DebugSections);
- return std::move(DebugSections);
-}