Index: docs/Extensions.rst =================================================================== --- docs/Extensions.rst +++ docs/Extensions.rst @@ -67,7 +67,7 @@ .long 4 .long 242 .long 40 - .secrel32 _function_name + .secrel32 _function_name + 0 .secidx _function_name ... Index: include/llvm/MC/MCStreamer.h =================================================================== --- include/llvm/MC/MCStreamer.h +++ include/llvm/MC/MCStreamer.h @@ -470,7 +470,7 @@ /// \brief Emits a COFF section relative relocation. /// /// \param Symbol - Symbol the section relative relocation should point to. - virtual void EmitCOFFSecRel32(MCSymbol const *Symbol); + virtual void EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset); /// \brief Emit an ELF .size directive. /// Index: include/llvm/MC/MCWinCOFFStreamer.h =================================================================== --- include/llvm/MC/MCWinCOFFStreamer.h +++ include/llvm/MC/MCWinCOFFStreamer.h @@ -52,7 +52,7 @@ void EndCOFFSymbolDef() override; void EmitCOFFSafeSEH(MCSymbol const *Symbol) override; void EmitCOFFSectionIndex(MCSymbol const *Symbol) override; - void EmitCOFFSecRel32(MCSymbol const *Symbol) override; + void EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) override; void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override; void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size, Index: lib/CodeGen/AsmPrinter/AsmPrinter.cpp =================================================================== --- lib/CodeGen/AsmPrinter/AsmPrinter.cpp +++ lib/CodeGen/AsmPrinter/AsmPrinter.cpp @@ -1691,7 +1691,7 @@ unsigned Size, bool IsSectionRelative) const { if (MAI->needsDwarfSectionOffsetDirective() && IsSectionRelative) { - OutStreamer->EmitCOFFSecRel32(Label); + OutStreamer->EmitCOFFSecRel32(Label, Offset); return; } Index: lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp =================================================================== --- lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp +++ lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp @@ -149,7 +149,7 @@ if (!ForceOffset) { // On COFF targets, we have to emit the special .secrel32 directive. if (MAI->needsDwarfSectionOffsetDirective()) { - OutStreamer->EmitCOFFSecRel32(Label); + OutStreamer->EmitCOFFSecRel32(Label, /*Offset=*/0); return; } Index: lib/CodeGen/AsmPrinter/CodeViewDebug.cpp =================================================================== --- lib/CodeGen/AsmPrinter/CodeViewDebug.cpp +++ lib/CodeGen/AsmPrinter/CodeViewDebug.cpp @@ -801,7 +801,7 @@ OS.AddComment("Function type index"); OS.EmitIntValue(getFuncIdForSubprogram(GV->getSubprogram()).getIndex(), 4); OS.AddComment("Function section relative address"); - OS.EmitCOFFSecRel32(Fn); + OS.EmitCOFFSecRel32(Fn, /*Offset=*/0); OS.AddComment("Function section index"); OS.EmitCOFFSectionIndex(Fn); OS.AddComment("Flags"); @@ -2270,7 +2270,7 @@ OS.AddComment("Type"); OS.EmitIntValue(getCompleteTypeIndex(DIGV->getType()).getIndex(), 4); OS.AddComment("DataOffset"); - OS.EmitCOFFSecRel32(GVSym); + OS.EmitCOFFSecRel32(GVSym, /*Offset=*/0); OS.AddComment("Segment"); OS.EmitCOFFSectionIndex(GVSym); OS.AddComment("Name"); Index: lib/CodeGen/AsmPrinter/DIE.cpp =================================================================== --- lib/CodeGen/AsmPrinter/DIE.cpp +++ lib/CodeGen/AsmPrinter/DIE.cpp @@ -454,7 +454,7 @@ Addr += CU->getDebugInfoOffset(); if (AP->MAI->doesDwarfUseRelocationsAcrossSections()) AP->EmitLabelPlusOffset(CU->getSectionSym(), Addr, - DIEEntry::getRefAddrSize(AP)); + DIEEntry::getRefAddrSize(AP), true); else AP->OutStreamer->EmitIntValue(Addr, DIEEntry::getRefAddrSize(AP)); } else Index: lib/MC/MCAsmStreamer.cpp =================================================================== --- lib/MC/MCAsmStreamer.cpp +++ lib/MC/MCAsmStreamer.cpp @@ -150,7 +150,7 @@ void EndCOFFSymbolDef() override; void EmitCOFFSafeSEH(MCSymbol const *Symbol) override; void EmitCOFFSectionIndex(MCSymbol const *Symbol) override; - void EmitCOFFSecRel32(MCSymbol const *Symbol) override; + void EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) override; void emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) override; void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, unsigned ByteAlignment) override; @@ -614,9 +614,12 @@ EmitEOL(); } -void MCAsmStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { +void MCAsmStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) { OS << "\t.secrel32\t"; Symbol->print(OS, MAI); + if (Offset != 0) { + OS << '+' << Offset; + } EmitEOL(); } Index: lib/MC/MCCodeView.cpp =================================================================== --- lib/MC/MCCodeView.cpp +++ lib/MC/MCCodeView.cpp @@ -200,7 +200,7 @@ OS.EmitIntValue(unsigned(ModuleSubstreamKind::Lines), 4); OS.emitAbsoluteSymbolDiff(LineEnd, LineBegin, 4); OS.EmitLabel(LineBegin); - OS.EmitCOFFSecRel32(FuncBegin); + OS.EmitCOFFSecRel32(FuncBegin, /*Offset=*/0); OS.EmitCOFFSectionIndex(FuncBegin); // Actual line info. Index: lib/MC/MCParser/COFFAsmParser.cpp =================================================================== --- lib/MC/MCParser/COFFAsmParser.cpp +++ lib/MC/MCParser/COFFAsmParser.cpp @@ -455,13 +455,26 @@ if (getParser().parseIdentifier(SymbolID)) return TokError("expected identifier in directive"); + int64_t Offset = 0; + SMLoc OffsetLoc; + if (getLexer().is(AsmToken::Plus)) { + OffsetLoc = getLexer().getLoc(); + if (getParser().parseAbsoluteExpression(Offset)) + return true; + } + if (getLexer().isNot(AsmToken::EndOfStatement)) return TokError("unexpected token in directive"); + if (Offset < 0) + return Error(OffsetLoc, "invalid '.secrel32' directive offset, can't be less" + "than zero"); + + MCSymbol *Symbol = getContext().getOrCreateSymbol(SymbolID); Lex(); - getStreamer().EmitCOFFSecRel32(Symbol); + getStreamer().EmitCOFFSecRel32(Symbol, Offset); return false; } Index: lib/MC/MCStreamer.cpp =================================================================== --- lib/MC/MCStreamer.cpp +++ lib/MC/MCStreamer.cpp @@ -125,7 +125,7 @@ if (!IsSectionRelative) EmitValueImpl(MCSymbolRefExpr::create(Sym, getContext()), Size); else - EmitCOFFSecRel32(Sym); + EmitCOFFSecRel32(Sym, /*Offset=*/0); } void MCStreamer::EmitDTPRel64Value(const MCExpr *Value) { @@ -696,7 +696,7 @@ void MCStreamer::EmitCOFFSectionIndex(MCSymbol const *Symbol) { } -void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { +void MCStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) { } /// EmitRawText - If this file is backed by an assembly streamer, this dumps Index: lib/MC/WinCOFFStreamer.cpp =================================================================== --- lib/MC/WinCOFFStreamer.cpp +++ lib/MC/WinCOFFStreamer.cpp @@ -195,11 +195,18 @@ DF->getContents().resize(DF->getContents().size() + 2, 0); } -void MCWinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol) { +void MCWinCOFFStreamer::EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) { MCDataFragment *DF = getOrCreateDataFragment(); - const MCSymbolRefExpr *SRE = MCSymbolRefExpr::create(Symbol, getContext()); - MCFixup Fixup = MCFixup::create(DF->getContents().size(), SRE, FK_SecRel_4); + // Create Symbol A for the relocation relative reference. + const MCExpr *MCE = MCSymbolRefExpr::create(Symbol, getContext()); + // Add the constant offset, if given + if (Offset) + MCE = MCBinaryExpr::createAdd(MCE, MCConstantExpr::create(Offset, getContext()), getContext()); + // Build the secrel32 relocation. + MCFixup Fixup = MCFixup::create(DF->getContents().size(), MCE, FK_SecRel_4); + // Record the relocation. DF->getFixups().push_back(Fixup); + // Emit 4 bytes (zeros) to the object file. DF->getContents().resize(DF->getContents().size() + 4, 0); } Index: test/DebugInfo/X86/ref_addr_relocation.ll =================================================================== --- test/DebugInfo/X86/ref_addr_relocation.ll +++ test/DebugInfo/X86/ref_addr_relocation.ll @@ -1,10 +1,22 @@ -; RUN: llc -filetype=asm -O0 -mtriple=x86_64-linux-gnu < %s | FileCheck %s -; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-linux-gnu -o %t -; RUN: llvm-dwarfdump %t | FileCheck %s -check-prefix=CHECK-DWARF +; RUN: llc -filetype=asm -O0 -mtriple=x86_64-linux-gnu < %s -dwarf-version 2 | FileCheck -check-prefixes=CHECK,ELF-ASM %s +; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-linux-gnu -o %t-2 -dwarf-version 2 +; RUN: llvm-dwarfdump %t-2 | FileCheck %s -check-prefix=CHECK-DWARF +; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-linux-gnu -o %t-4 -dwarf-version 2 +; RUN: llvm-dwarfdump %t-4 | FileCheck %s -check-prefix=CHECK-DWARF -; RUN: llc -filetype=asm -O0 -mtriple=x86_64-apple-darwin < %s | FileCheck --check-prefix=DARWIN-ASM %s -; RUN: llc -filetype=obj %s -mtriple=x86_64-apple-darwin -o %t2 -; RUN: llvm-dwarfdump %t2 | FileCheck %s -check-prefix=DARWIN-DWARF +; RUN: llc -filetype=asm -O0 -mtriple=x86_64-apple-darwin < %s -dwarf-version 2 | FileCheck -check-prefixes=CHECK,DARWIN-ASM2 %s +; RUN: llc -filetype=asm -O0 -mtriple=x86_64-apple-darwin < %s -dwarf-version 4 | FileCheck -check-prefixes=CHECK,DARWIN-ASM4 %s +; RUN: llc -filetype=obj %s -mtriple=x86_64-apple-darwin -o %t2-2 -dwarf-version 2 +; RUN: llvm-dwarfdump %t2-2 | FileCheck %s -check-prefix=CHECK-DWARF +; RUN: llc -filetype=obj %s -mtriple=x86_64-apple-darwin -o %t2-4 -dwarf-version 4 +; RUN: llvm-dwarfdump %t2-4 | FileCheck %s -check-prefix=CHECK-DWARF + +; RUN: llc -filetype=asm -O0 -mtriple=x86_64-pc-win32 < %s -dwarf-version 2 | FileCheck -check-prefixes=CHECK,COFF-ASM %s +; RUN: llc -filetype=asm -O0 -mtriple=x86_64-pc-win32 < %s -dwarf-version 4 | FileCheck -check-prefixes=CHECK,COFF-ASM %s +; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-pc-win32 -o %t3-2 -dwarf-version 2 +; RUN: llvm-dwarfdump %t3-2 | FileCheck %s -check-prefix=CHECK-DWARF2 +; RUN: llc -filetype=obj -O0 %s -mtriple=x86_64-pc-win32 -o %t3-4 -dwarf-version 4 +; RUN: llvm-dwarfdump %t3-4 | FileCheck %s -check-prefix=CHECK-DWARF ; Testing case generated from: ; clang++ tu1.cpp tu2.cpp -g -emit-llvm -c @@ -22,7 +34,10 @@ ; Make sure we use relocation for ref_addr on non-darwin platforms. ; CHECK: DW_TAG_compile_unit ; CHECK: DW_TAG_variable -; CHECK: .long [[TYPE:.*]] # DW_AT_type +; ELF-ASM: .long [[TYPE:.*]] # DW_AT_type +; DARWIN-ASM2: .long [[TYPE:.*]] ## DW_AT_type +; DARWIN-ASM4: .long [[TYPE:.*]] ## DW_AT_type +; COFF-ASM: .long [[TYPE:.*]] # DW_AT_type ; CHECK: DW_TAG_structure_type ; CHECK: cu_begin1 ; CHECK: DW_TAG_compile_unit @@ -30,25 +45,24 @@ ; This variable's type is in the 1st CU. ; CHECK: DW_TAG_variable ; Make sure this is relocatable. -; CHECK: .quad .Lsection_info+[[TYPE]] # DW_AT_type +; and test that we don't create the labels to emit a correct COFF relocation +; ELF-ASM: .quad .Lsection_info+[[TYPE]] # DW_AT_type +; COFF-ASM: .secrel32 .Lsection_info+[[TYPE]] # DW_AT_type +; DARWIN-ASM2: .quad [[TYPE]] ## DW_AT_type +; DARWIN-ASM4: .long [[TYPE]] ## DW_AT_type ; CHECK-NOT: DW_TAG_structure_type ; CHECK: .section -; test that we don't create useless labels -; DARWIN-ASM: .long [[TYPE:.*]] ## DW_AT_type -; DARWIN-ASM: .quad [[TYPE]] ## DW_AT_type - ; CHECK-DWARF: DW_TAG_compile_unit ; CHECK-DWARF: 0x[[ADDR:.*]]: DW_TAG_structure_type ; CHECK-DWARF: DW_TAG_compile_unit ; CHECK-DWARF: DW_TAG_variable ; CHECK-DWARF: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[ADDR]]) -; DARWIN-DWARF: DW_TAG_compile_unit -; DARWIN-DWARF: 0x[[ADDR:.*]]: DW_TAG_structure_type -; DARWIN-DWARF: DW_TAG_compile_unit -; DARWIN-DWARF: DW_TAG_variable -; DARWIN-DWARF: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[ADDR]]) +; CHECK-DWARF2: DW_TAG_compile_unit +; CHECK-DWARF2: DW_TAG_variable +; CHECK-DWARF2: DW_AT_type [DW_FORM_ref4] {{.*}} => {[[ADDR:.*]]}) +; CHECK-DWARF2: [[ADDR]]: DW_TAG_structure_type %struct.foo = type { i8 }