//===----------------------------------------------------------------------===//
#include "llvm/MC/MCDwarf.h"
+#include "llvm/ADT/Hashing.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Config/config.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCExpr.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SourceMgr.h"
-#include "llvm/ADT/Hashing.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Config/config.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
// Given a special op, return the address skip amount (in units of
}
// Add the line entry to this section's entries.
- LineSection->addLineEntry(LineEntry);
+ LineSection->addLineEntry(LineEntry,
+ MCOS->getContext().getDwarfCompileUnitID());
}
//
//
static inline void EmitDwarfLineTable(MCStreamer *MCOS,
const MCSection *Section,
- const MCLineSection *LineSection) {
+ const MCLineSection *LineSection,
+ unsigned CUID) {
+ // This LineSection does not contain any LineEntry for the given Compile Unit.
+ if (!LineSection->containEntriesForID(CUID))
+ return;
+
unsigned FileNum = 1;
unsigned LastLine = 1;
unsigned Column = 0;
// Loop through each MCLineEntry and encode the dwarf line number table.
for (MCLineSection::const_iterator
- it = LineSection->getMCLineEntries()->begin(),
- ie = LineSection->getMCLineEntries()->end(); it != ie; ++it) {
+ it = LineSection->getMCLineEntries(CUID).begin(),
+ ie = LineSection->getMCLineEntries(CUID).end(); it != ie; ++it) {
if (FileNum != it->getFileNum()) {
FileNum = it->getFileNum();
// Switch to the section where the table will be emitted into.
MCOS->SwitchSection(context.getObjectFileInfo()->getDwarfLineSection());
- // Create a symbol at the beginning of this section.
- MCSymbol *LineStartSym = context.CreateTempSymbol();
- // Set the value of the symbol, as we are at the start of the section.
+ const DenseMap<unsigned, MCSymbol *> &MCLineTableSymbols =
+ MCOS->getContext().getMCLineTableSymbols();
+ // CUID and MCLineTableSymbols are set in DwarfDebug, when DwarfDebug does
+ // not exist, CUID will be 0 and MCLineTableSymbols will be empty.
+ // Handle Compile Unit 0, the line table start symbol is the section symbol.
+ const MCSymbol *LineStartSym = EmitCU(MCOS, 0);
+ // Handle the rest of the Compile Units.
+ for (unsigned Is = 1, Ie = MCLineTableSymbols.size(); Is < Ie; Is++)
+ EmitCU(MCOS, Is);
+
+ // Now delete the MCLineSections that were created in MCLineEntry::Make()
+ // and used to emit the line table.
+ const DenseMap<const MCSection *, MCLineSection *> &MCLineSections =
+ MCOS->getContext().getMCLineSections();
+ for (DenseMap<const MCSection *, MCLineSection *>::const_iterator it =
+ MCLineSections.begin(), ie = MCLineSections.end(); it != ie;
+ ++it)
+ delete it->second;
+
+ return LineStartSym;
+}
+
+const MCSymbol *MCDwarfFileTable::EmitCU(MCStreamer *MCOS, unsigned CUID) {
+ MCContext &context = MCOS->getContext();
+
+ // Create a symbol at the beginning of the line table.
+ MCSymbol *LineStartSym = MCOS->getContext().getMCLineTableSymbol(CUID);
+ if (!LineStartSym)
+ LineStartSym = context.CreateTempSymbol();
+ // Set the value of the symbol, as we are at the start of the line table.
MCOS->EmitLabel(LineStartSym);
// Create a symbol for the end of the section (to be set when we get there).
// total length, the 2 bytes for the version, and these 4 bytes for the
// length of the prologue.
MCOS->EmitAbsValue(MakeStartMinusEndExpr(*MCOS, *LineStartSym, *ProEndSym,
- (4 + 2 + 4)),
- 4, 0);
+ (4 + 2 + 4)), 4, 0);
// Parameters of the state machine, are next.
MCOS->EmitIntValue(DWARF2_LINE_MIN_INSN_LENGTH, 1);
// First the directory table.
const std::vector<StringRef> &MCDwarfDirs =
- context.getMCDwarfDirs();
+ context.getMCDwarfDirs(CUID);
for (unsigned i = 0; i < MCDwarfDirs.size(); i++) {
- MCOS->EmitBytes(MCDwarfDirs[i], 0); // the DirectoryName
- MCOS->EmitBytes(StringRef("\0", 1), 0); // the null term. of the string
+ MCOS->EmitBytes(MCDwarfDirs[i]); // the DirectoryName
+ MCOS->EmitBytes(StringRef("\0", 1)); // the null term. of the string
}
MCOS->EmitIntValue(0, 1); // Terminate the directory list
// Second the file table.
const std::vector<MCDwarfFile *> &MCDwarfFiles =
- MCOS->getContext().getMCDwarfFiles();
+ MCOS->getContext().getMCDwarfFiles(CUID);
for (unsigned i = 1; i < MCDwarfFiles.size(); i++) {
- MCOS->EmitBytes(MCDwarfFiles[i]->getName(), 0); // FileName
- MCOS->EmitBytes(StringRef("\0", 1), 0); // the null term. of the string
+ MCOS->EmitBytes(MCDwarfFiles[i]->getName()); // FileName
+ MCOS->EmitBytes(StringRef("\0", 1)); // the null term. of the string
// the Directory num
MCOS->EmitULEB128IntValue(MCDwarfFiles[i]->getDirIndex());
MCOS->EmitIntValue(0, 1); // last modification timestamp (always 0)
++it) {
const MCSection *Sec = *it;
const MCLineSection *Line = MCLineSections.lookup(Sec);
- EmitDwarfLineTable(MCOS, Sec, Line);
-
- // Now delete the MCLineSections that were created in MCLineEntry::Make()
- // and used to emit the line table.
- delete Line;
+ EmitDwarfLineTable(MCOS, Sec, Line, CUID);
}
if (MCOS->getContext().getAsmInfo().getLinkerRequiresNonEmptyDwarfLines()
SmallString<256> Tmp;
raw_svector_ostream OS(Tmp);
MCDwarfLineAddr::Encode(LineDelta, AddrDelta, OS);
- MCOS->EmitBytes(OS.str(), /*AddrSpace=*/0);
+ MCOS->EmitBytes(OS.str());
}
/// Utility function to encode a Dwarf pair of LineDelta and AddrDeltas.
const std::vector<StringRef> &MCDwarfDirs =
context.getMCDwarfDirs();
if (MCDwarfDirs.size() > 0) {
- MCOS->EmitBytes(MCDwarfDirs[0], 0);
- MCOS->EmitBytes("/", 0);
+ MCOS->EmitBytes(MCDwarfDirs[0]);
+ MCOS->EmitBytes("/");
}
const std::vector<MCDwarfFile *> &MCDwarfFiles =
MCOS->getContext().getMCDwarfFiles();
- MCOS->EmitBytes(MCDwarfFiles[1]->getName(), 0);
+ MCOS->EmitBytes(MCDwarfFiles[1]->getName());
MCOS->EmitIntValue(0, 1); // NULL byte to terminate the string.
// AT_comp_dir, the working directory the assembly was done in.
- llvm::sys::Path CWD = llvm::sys::Path::GetCurrentDirectory();
- MCOS->EmitBytes(StringRef(CWD.c_str()), 0);
+ MCOS->EmitBytes(context.getCompilationDir());
MCOS->EmitIntValue(0, 1); // NULL byte to terminate the string.
// AT_APPLE_flags, the command line arguments of the assembler tool.
StringRef DwarfDebugFlags = context.getDwarfDebugFlags();
if (!DwarfDebugFlags.empty()){
- MCOS->EmitBytes(DwarfDebugFlags, 0);
+ MCOS->EmitBytes(DwarfDebugFlags);
MCOS->EmitIntValue(0, 1); // NULL byte to terminate the string.
}
// AT_producer, the version of the assembler tool.
- MCOS->EmitBytes(StringRef("llvm-mc (based on LLVM "), 0);
- MCOS->EmitBytes(StringRef(PACKAGE_VERSION), 0);
- MCOS->EmitBytes(StringRef(")"), 0);
+ StringRef DwarfDebugProducer = context.getDwarfDebugProducer();
+ if (!DwarfDebugProducer.empty()){
+ MCOS->EmitBytes(DwarfDebugProducer);
+ }
+ else {
+ MCOS->EmitBytes(StringRef("llvm-mc (based on LLVM "));
+ MCOS->EmitBytes(StringRef(PACKAGE_VERSION));
+ MCOS->EmitBytes(StringRef(")"));
+ }
MCOS->EmitIntValue(0, 1); // NULL byte to terminate the string.
// AT_language, a 4 byte value. We use DW_LANG_Mips_Assembler as the dwarf2
MCOS->EmitULEB128IntValue(2);
// AT_name, of the label without any leading underbar.
- MCOS->EmitBytes(Entry->getName(), 0);
+ MCOS->EmitBytes(Entry->getName());
MCOS->EmitIntValue(0, 1); // NULL byte to terminate the string.
// AT_decl_file, index into the file table.
static int getDataAlignmentFactor(MCStreamer &streamer) {
MCContext &context = streamer.getContext();
const MCAsmInfo &asmInfo = context.getAsmInfo();
- int size = asmInfo.getPointerSize();
+ int size = asmInfo.getCalleeSaveStackSlotSize();
if (asmInfo.isStackGrowthDirectionUp())
return size;
else
bool VerboseAsm = Streamer.isVerboseAsm();
switch (Instr.getOperation()) {
- case MCCFIInstruction::Undefined: {
- unsigned Reg = Instr.getDestination().getReg();
+ case MCCFIInstruction::OpRegister: {
+ unsigned Reg1 = Instr.getRegister();
+ unsigned Reg2 = Instr.getRegister2();
+ if (VerboseAsm) {
+ Streamer.AddComment("DW_CFA_register");
+ Streamer.AddComment(Twine("Reg1 ") + Twine(Reg1));
+ Streamer.AddComment(Twine("Reg2 ") + Twine(Reg2));
+ }
+ Streamer.EmitIntValue(dwarf::DW_CFA_register, 1);
+ Streamer.EmitULEB128IntValue(Reg1);
+ Streamer.EmitULEB128IntValue(Reg2);
+ return;
+ }
+ case MCCFIInstruction::OpUndefined: {
+ unsigned Reg = Instr.getRegister();
if (VerboseAsm) {
Streamer.AddComment("DW_CFA_undefined");
Streamer.AddComment(Twine("Reg ") + Twine(Reg));
Streamer.EmitULEB128IntValue(Reg);
return;
}
- case MCCFIInstruction::Move:
- case MCCFIInstruction::RelMove: {
- const MachineLocation &Dst = Instr.getDestination();
- const MachineLocation &Src = Instr.getSource();
- const bool IsRelative = Instr.getOperation() == MCCFIInstruction::RelMove;
-
- // If advancing cfa.
- if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
- if (Src.getReg() == MachineLocation::VirtualFP) {
- if (VerboseAsm) Streamer.AddComment("DW_CFA_def_cfa_offset");
- Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_offset, 1);
- } else {
- if (VerboseAsm) Streamer.AddComment("DW_CFA_def_cfa");
- Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa, 1);
- if (VerboseAsm) Streamer.AddComment(Twine("Reg ") +
- Twine(Src.getReg()));
- Streamer.EmitULEB128IntValue(Src.getReg());
- }
+ case MCCFIInstruction::OpAdjustCfaOffset:
+ case MCCFIInstruction::OpDefCfaOffset: {
+ const bool IsRelative =
+ Instr.getOperation() == MCCFIInstruction::OpAdjustCfaOffset;
- if (IsRelative)
- CFAOffset += Src.getOffset();
- else
- CFAOffset = -Src.getOffset();
+ if (VerboseAsm)
+ Streamer.AddComment("DW_CFA_def_cfa_offset");
+ Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_offset, 1);
- if (VerboseAsm) Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
- Streamer.EmitULEB128IntValue(CFAOffset);
- return;
- }
+ if (IsRelative)
+ CFAOffset += Instr.getOffset();
+ else
+ CFAOffset = -Instr.getOffset();
- if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) {
- assert(Dst.isReg() && "Machine move not supported yet.");
- if (VerboseAsm) Streamer.AddComment("DW_CFA_def_cfa_register");
- Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_register, 1);
- if (VerboseAsm) Streamer.AddComment(Twine("Reg ") + Twine(Dst.getReg()));
- Streamer.EmitULEB128IntValue(Dst.getReg());
- return;
- }
+ if (VerboseAsm)
+ Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
+ Streamer.EmitULEB128IntValue(CFAOffset);
+
+ return;
+ }
+ case MCCFIInstruction::OpDefCfa: {
+ if (VerboseAsm)
+ Streamer.AddComment("DW_CFA_def_cfa");
+ Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa, 1);
+
+ if (VerboseAsm)
+ Streamer.AddComment(Twine("Reg ") + Twine(Instr.getRegister()));
+ Streamer.EmitULEB128IntValue(Instr.getRegister());
+
+ CFAOffset = -Instr.getOffset();
+
+ if (VerboseAsm)
+ Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
+ Streamer.EmitULEB128IntValue(CFAOffset);
+
+ return;
+ }
+
+ case MCCFIInstruction::OpDefCfaRegister: {
+ if (VerboseAsm)
+ Streamer.AddComment("DW_CFA_def_cfa_register");
+ Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_register, 1);
+
+ if (VerboseAsm)
+ Streamer.AddComment(Twine("Reg ") + Twine(Instr.getRegister()));
+ Streamer.EmitULEB128IntValue(Instr.getRegister());
+
+ return;
+ }
+
+ case MCCFIInstruction::OpOffset:
+ case MCCFIInstruction::OpRelOffset: {
+ const bool IsRelative =
+ Instr.getOperation() == MCCFIInstruction::OpRelOffset;
- unsigned Reg = Src.getReg();
- int Offset = Dst.getOffset();
+ unsigned Reg = Instr.getRegister();
+ int Offset = Instr.getOffset();
if (IsRelative)
Offset -= CFAOffset;
Offset = Offset / dataAlignmentFactor;
}
return;
}
- case MCCFIInstruction::RememberState:
+ case MCCFIInstruction::OpRememberState:
if (VerboseAsm) Streamer.AddComment("DW_CFA_remember_state");
Streamer.EmitIntValue(dwarf::DW_CFA_remember_state, 1);
return;
- case MCCFIInstruction::RestoreState:
+ case MCCFIInstruction::OpRestoreState:
if (VerboseAsm) Streamer.AddComment("DW_CFA_restore_state");
Streamer.EmitIntValue(dwarf::DW_CFA_restore_state, 1);
return;
- case MCCFIInstruction::SameValue: {
- unsigned Reg = Instr.getDestination().getReg();
+ case MCCFIInstruction::OpSameValue: {
+ unsigned Reg = Instr.getRegister();
if (VerboseAsm) Streamer.AddComment("DW_CFA_same_value");
Streamer.EmitIntValue(dwarf::DW_CFA_same_value, 1);
if (VerboseAsm) Streamer.AddComment(Twine("Reg ") + Twine(Reg));
Streamer.EmitULEB128IntValue(Reg);
return;
}
- case MCCFIInstruction::Restore: {
- unsigned Reg = Instr.getDestination().getReg();
+ case MCCFIInstruction::OpRestore: {
+ unsigned Reg = Instr.getRegister();
if (VerboseAsm) {
Streamer.AddComment("DW_CFA_restore");
Streamer.AddComment(Twine("Reg ") + Twine(Reg));
Streamer.EmitIntValue(dwarf::DW_CFA_restore | Reg, 1);
return;
}
- case MCCFIInstruction::Escape:
+ case MCCFIInstruction::OpEscape:
if (VerboseAsm) Streamer.AddComment("Escape bytes");
- Streamer.EmitBytes(Instr.getValues(), 0);
+ Streamer.EmitBytes(Instr.getValues());
return;
}
llvm_unreachable("Unhandled case in switch");
Augmentation += "R";
if (IsSignalFrame)
Augmentation += "S";
- streamer.EmitBytes(Augmentation.str(), 0);
+ streamer.EmitBytes(Augmentation.str());
}
streamer.EmitIntValue(0, 1);
unsigned Reg = Src.getReg();
int Offset = Dst.getOffset();
MCCFIInstruction Inst =
- MCCFIInstruction::createCFIOffset(Label, Reg, Offset);
+ MCCFIInstruction::createOffset(Label, Reg, Offset);
Instructions.push_back(Inst);
}
}
SmallString<256> Tmp;
raw_svector_ostream OS(Tmp);
MCDwarfFrameEmitter::EncodeAdvanceLoc(AddrDelta, OS);
- Streamer.EmitBytes(OS.str(), /*AddrSpace=*/0);
+ Streamer.EmitBytes(OS.str());
}
void MCDwarfFrameEmitter::EncodeAdvanceLoc(uint64_t AddrDelta,
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