forked from OSchip/llvm-project
120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
//===-- llvm/CodeGen/DwarfWriter.cpp - Dwarf Framework --------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing dwarf info into asm files.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/DwarfWriter.h"
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#include "DwarfDebug.h"
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#include "DwarfException.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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using namespace llvm;
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static RegisterPass<DwarfWriter>
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X("dwarfwriter", "DWARF Information Writer");
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char DwarfWriter::ID = 0;
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//===----------------------------------------------------------------------===//
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/// DwarfWriter Implementation
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///
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DwarfWriter::DwarfWriter()
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: ImmutablePass(&ID), DD(0), DE(0) {}
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DwarfWriter::~DwarfWriter() {
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delete DE;
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delete DD;
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}
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/// BeginModule - Emit all Dwarf sections that should come prior to the
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/// content.
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void DwarfWriter::BeginModule(Module *M,
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MachineModuleInfo *MMI,
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raw_ostream &OS, AsmPrinter *A,
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const MCAsmInfo *T) {
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DE = new DwarfException(OS, A, T);
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DD = new DwarfDebug(OS, A, T);
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DE->BeginModule(M, MMI);
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DD->BeginModule(M, MMI);
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}
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/// EndModule - Emit all Dwarf sections that should come after the content.
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///
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void DwarfWriter::EndModule() {
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DE->EndModule();
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DD->EndModule();
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}
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/// BeginFunction - Gather pre-function debug information. Assumes being
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/// emitted immediately after the function entry point.
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void DwarfWriter::BeginFunction(MachineFunction *MF) {
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DE->BeginFunction(MF);
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DD->BeginFunction(MF);
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}
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/// EndFunction - Gather and emit post-function debug information.
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///
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void DwarfWriter::EndFunction(MachineFunction *MF) {
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DD->EndFunction(MF);
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DE->EndFunction();
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if (MachineModuleInfo *MMI = DD->getMMI() ? DD->getMMI() : DE->getMMI())
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// Clear function debug information.
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MMI->EndFunction();
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}
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/// RecordSourceLine - Records location information and associates it with a
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/// label. Returns a unique label ID used to generate a label and provide
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/// correspondence to the source line list.
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unsigned DwarfWriter::RecordSourceLine(unsigned Line, unsigned Col,
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DICompileUnit CU) {
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return DD->RecordSourceLine(Line, Col, CU);
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}
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/// RecordRegionStart - Indicate the start of a region.
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unsigned DwarfWriter::RecordRegionStart(MDNode *N) {
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return DD->RecordRegionStart(N);
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}
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/// RecordRegionEnd - Indicate the end of a region.
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unsigned DwarfWriter::RecordRegionEnd(MDNode *N) {
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return DD->RecordRegionEnd(N);
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}
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/// getRecordSourceLineCount - Count source lines.
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unsigned DwarfWriter::getRecordSourceLineCount() {
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return DD->getRecordSourceLineCount();
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}
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/// RecordVariable - Indicate the declaration of a local variable.
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///
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void DwarfWriter::RecordVariable(MDNode *N, unsigned FrameIndex) {
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DD->RecordVariable(N, FrameIndex);
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}
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/// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
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/// be emitted.
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bool DwarfWriter::ShouldEmitDwarfDebug() const {
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return DD && DD->ShouldEmitDwarfDebug();
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}
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//// RecordInlinedFnStart
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unsigned DwarfWriter::RecordInlinedFnStart(DISubprogram SP, DICompileUnit CU,
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unsigned Line, unsigned Col) {
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return DD->RecordInlinedFnStart(SP, CU, Line, Col);
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}
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/// RecordInlinedFnEnd - Indicate the end of inlined subroutine.
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unsigned DwarfWriter::RecordInlinedFnEnd(DISubprogram SP) {
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return DD->RecordInlinedFnEnd(SP);
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}
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