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-rw-r--r--lib/MC/MCAsmStreamer.cpp4
-rw-r--r--lib/MC/MCAssembler.cpp44
-rw-r--r--lib/MC/MCDisassembler/Disassembler.cpp2
-rw-r--r--lib/MC/MCDisassembler/Disassembler.h4
-rw-r--r--lib/MC/MCDwarf.cpp53
-rw-r--r--lib/MC/MCInstrAnalysis.cpp5
-rw-r--r--lib/MC/MCObjectFileInfo.cpp15
-rw-r--r--lib/MC/MCParser/ELFAsmParser.cpp2
-rw-r--r--lib/MC/MCStreamer.cpp2
-rw-r--r--lib/MC/MachObjectWriter.cpp2
10 files changed, 115 insertions, 18 deletions
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 92f615180561..ae02f50bf8bd 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -337,7 +337,7 @@ void MCAsmStreamer::AddComment(const Twine &T, bool EOL) {
if (!IsVerboseAsm) return;
T.toVector(CommentToEmit);
-
+
if (EOL)
CommentToEmit.push_back('\n'); // Place comment in a new line.
}
@@ -655,7 +655,7 @@ void MCAsmStreamer::EmitSyntaxDirective() {
EmitEOL();
}
// FIXME: Currently emit unprefix'ed registers.
- // The intel_syntax directive has one optional argument
+ // The intel_syntax directive has one optional argument
// with may have a value of prefix or noprefix.
}
diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index 1470e026d985..1e23b6d816e8 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -550,7 +550,7 @@ static void writeFragment(raw_ostream &OS, const MCAssembler &Asm,
break;
}
- case MCFragment::FT_Data:
+ case MCFragment::FT_Data:
++stats::EmittedDataFragments;
OS << cast<MCDataFragment>(F).getContents();
break;
@@ -822,6 +822,9 @@ void MCAssembler::layout(MCAsmLayout &Layout) {
} else if (auto *FragWithFixups = dyn_cast<MCCVDefRangeFragment>(&Frag)) {
Fixups = FragWithFixups->getFixups();
Contents = FragWithFixups->getContents();
+ } else if (auto *FragWithFixups = dyn_cast<MCDwarfLineAddrFragment>(&Frag)) {
+ Fixups = FragWithFixups->getFixups();
+ Contents = FragWithFixups->getContents();
} else
llvm_unreachable("Unknown fragment with fixups!");
for (const MCFixup &Fixup : Fixups) {
@@ -951,16 +954,43 @@ bool MCAssembler::relaxDwarfLineAddr(MCAsmLayout &Layout,
MCContext &Context = Layout.getAssembler().getContext();
uint64_t OldSize = DF.getContents().size();
int64_t AddrDelta;
- bool Abs = DF.getAddrDelta().evaluateKnownAbsolute(AddrDelta, Layout);
- assert(Abs && "We created a line delta with an invalid expression");
- (void) Abs;
+ bool Abs;
+ if (getBackend().requiresDiffExpressionRelocations())
+ Abs = DF.getAddrDelta().evaluateAsAbsolute(AddrDelta, Layout);
+ else {
+ Abs = DF.getAddrDelta().evaluateKnownAbsolute(AddrDelta, Layout);
+ assert(Abs && "We created a line delta with an invalid expression");
+ }
int64_t LineDelta;
LineDelta = DF.getLineDelta();
- SmallString<8> &Data = DF.getContents();
+ SmallVectorImpl<char> &Data = DF.getContents();
Data.clear();
raw_svector_ostream OSE(Data);
- MCDwarfLineAddr::Encode(Context, getDWARFLinetableParams(), LineDelta,
- AddrDelta, OSE);
+ DF.getFixups().clear();
+
+ if (Abs) {
+ MCDwarfLineAddr::Encode(Context, getDWARFLinetableParams(), LineDelta,
+ AddrDelta, OSE);
+ } else {
+ uint32_t Offset;
+ uint32_t Size;
+ bool SetDelta = MCDwarfLineAddr::FixedEncode(Context,
+ getDWARFLinetableParams(),
+ LineDelta, AddrDelta,
+ OSE, &Offset, &Size);
+ // Add Fixups for address delta or new address.
+ const MCExpr *FixupExpr;
+ if (SetDelta) {
+ FixupExpr = &DF.getAddrDelta();
+ } else {
+ const MCBinaryExpr *ABE = cast<MCBinaryExpr>(&DF.getAddrDelta());
+ FixupExpr = ABE->getLHS();
+ }
+ DF.getFixups().push_back(
+ MCFixup::create(Offset, FixupExpr,
+ MCFixup::getKindForSize(Size, false /*isPCRel*/)));
+ }
+
return OldSize != Data.size();
}
diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index 30e0bb562644..ad0a39991c53 100644
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -38,7 +38,7 @@ using namespace llvm;
// LLVMCreateDisasm() creates a disassembler for the TripleName. Symbolic
// disassembly is supported by passing a block of information in the DisInfo
// parameter and specifying the TagType and callback functions as described in
-// the header llvm-c/Disassembler.h . The pointer to the block and the
+// the header llvm-c/Disassembler.h . The pointer to the block and the
// functions can all be passed as NULL. If successful, this returns a
// disassembler context. If not, it returns NULL.
//
diff --git a/lib/MC/MCDisassembler/Disassembler.h b/lib/MC/MCDisassembler/Disassembler.h
index 25d17dafb576..f638fdc781d7 100644
--- a/lib/MC/MCDisassembler/Disassembler.h
+++ b/lib/MC/MCDisassembler/Disassembler.h
@@ -4,10 +4,10 @@
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
-// This file defines the interface for the Disassembly library's disassembler
+// This file defines the interface for the Disassembly library's disassembler
// context. The disassembler is responsible for producing strings for
// individual instructions according to a given architecture and disassembly
// syntax.
diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index 6131fcd658b2..0461c2564ccf 100644
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -492,7 +492,7 @@ MCDwarfLineTableHeader::Emit(MCStreamer *MCOS, MCDwarfLineTableParams Params,
// Parameters of the state machine, are next.
MCOS->EmitIntValue(context.getAsmInfo()->getMinInstAlignment(), 1);
- // maximum_operations_per_instruction
+ // maximum_operations_per_instruction
// For non-VLIW architectures this field is always 1.
// FIXME: VLIW architectures need to update this field accordingly.
if (LineTableVersion >= 4)
@@ -731,6 +731,57 @@ void MCDwarfLineAddr::Encode(MCContext &Context, MCDwarfLineTableParams Params,
}
}
+bool MCDwarfLineAddr::FixedEncode(MCContext &Context,
+ MCDwarfLineTableParams Params,
+ int64_t LineDelta, uint64_t AddrDelta,
+ raw_ostream &OS,
+ uint32_t *Offset, uint32_t *Size) {
+ if (LineDelta != INT64_MAX) {
+ OS << char(dwarf::DW_LNS_advance_line);
+ encodeSLEB128(LineDelta, OS);
+ }
+
+ // Use address delta to adjust address or use absolute address to adjust
+ // address.
+ bool SetDelta;
+ // According to DWARF spec., the DW_LNS_fixed_advance_pc opcode takes a
+ // single uhalf (unencoded) operand. So, the maximum value of AddrDelta
+ // is 65535. We set a conservative upper bound for it for relaxation.
+ if (AddrDelta > 60000) {
+ const MCAsmInfo *asmInfo = Context.getAsmInfo();
+ unsigned AddrSize = asmInfo->getCodePointerSize();
+
+ OS << char(dwarf::DW_LNS_extended_op);
+ encodeULEB128(1 + AddrSize, OS);
+ OS << char(dwarf::DW_LNE_set_address);
+ // Generate fixup for the address.
+ *Offset = OS.tell();
+ *Size = AddrSize;
+ SetDelta = false;
+ std::vector<uint8_t> FillData;
+ FillData.insert(FillData.begin(), AddrSize, 0);
+ OS.write(reinterpret_cast<char *>(FillData.data()), AddrSize);
+ } else {
+ OS << char(dwarf::DW_LNS_fixed_advance_pc);
+ // Generate fixup for 2-bytes address delta.
+ *Offset = OS.tell();
+ *Size = 2;
+ SetDelta = true;
+ OS << char(0);
+ OS << char(0);
+ }
+
+ if (LineDelta == INT64_MAX) {
+ OS << char(dwarf::DW_LNS_extended_op);
+ OS << char(1);
+ OS << char(dwarf::DW_LNE_end_sequence);
+ } else {
+ OS << char(dwarf::DW_LNS_copy);
+ }
+
+ return SetDelta;
+}
+
// Utility function to write a tuple for .debug_abbrev.
static void EmitAbbrev(MCStreamer *MCOS, uint64_t Name, uint64_t Form) {
MCOS->EmitULEB128IntValue(Name);
diff --git a/lib/MC/MCInstrAnalysis.cpp b/lib/MC/MCInstrAnalysis.cpp
index 8223f3a5c66f..4d7c89116893 100644
--- a/lib/MC/MCInstrAnalysis.cpp
+++ b/lib/MC/MCInstrAnalysis.cpp
@@ -24,6 +24,11 @@ bool MCInstrAnalysis::clearsSuperRegisters(const MCRegisterInfo &MRI,
return false;
}
+bool MCInstrAnalysis::isDependencyBreaking(const MCSubtargetInfo &STI,
+ const MCInst &Inst) const {
+ return false;
+}
+
bool MCInstrAnalysis::evaluateBranch(const MCInst &Inst, uint64_t Addr,
uint64_t Size, uint64_t &Target) const {
if (Inst.getNumOperands() == 0 ||
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 29d34a8c1e3e..b88d2d801822 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -950,8 +950,19 @@ void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple, bool PIC,
}
MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
- return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
- 0, utostr(Hash));
+ switch (TT.getObjectFormat()) {
+ case Triple::ELF:
+ return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
+ 0, utostr(Hash));
+ case Triple::MachO:
+ case Triple::COFF:
+ case Triple::Wasm:
+ case Triple::UnknownObjectFormat:
+ report_fatal_error("Cannot get DWARF types section for this object file "
+ "format: not implemented.");
+ break;
+ }
+ llvm_unreachable("Unknown ObjectFormatType");
}
MCSection *
diff --git a/lib/MC/MCParser/ELFAsmParser.cpp b/lib/MC/MCParser/ELFAsmParser.cpp
index 67e3512cc5bd..7bf14968c973 100644
--- a/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/lib/MC/MCParser/ELFAsmParser.cpp
@@ -254,7 +254,7 @@ bool ELFAsmParser::ParseSectionName(StringRef &SectionName) {
if (getLexer().is(AsmToken::Comma) ||
getLexer().is(AsmToken::EndOfStatement))
break;
-
+
unsigned CurSize;
if (getLexer().is(AsmToken::String)) {
CurSize = getTok().getIdentifier().size() + 2;
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index 8dd4b61be68f..21a9c3604cfc 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -514,7 +514,7 @@ void MCStreamer::EmitCFIEscape(StringRef Values) {
void MCStreamer::EmitCFIGnuArgsSize(int64_t Size) {
MCSymbol *Label = EmitCFILabel();
- MCCFIInstruction Instruction =
+ MCCFIInstruction Instruction =
MCCFIInstruction::createGnuArgsSize(Label, Size);
MCDwarfFrameInfo *CurFrame = getCurrentDwarfFrameInfo();
if (!CurFrame)
diff --git a/lib/MC/MachObjectWriter.cpp b/lib/MC/MachObjectWriter.cpp
index a464af1d42a7..2664528909af 100644
--- a/lib/MC/MachObjectWriter.cpp
+++ b/lib/MC/MachObjectWriter.cpp
@@ -952,7 +952,7 @@ uint64_t MachObjectWriter::writeObject(MCAssembler &Asm,
const DataRegionData *Data = &(*it);
uint64_t Start = getSymbolAddress(*Data->Start, Layout);
uint64_t End;
- if (Data->End)
+ if (Data->End)
End = getSymbolAddress(*Data->End, Layout);
else
report_fatal_error("Data region not terminated");
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 07:53:04 +0000