forked from OSchip/llvm-project
[AIX][XCOFF] Write Function descriptors and TOC base to data section
This patch implements writing function descriptors and TOC base into data section, and also add function descriptors(both csect and label) and TOC base symbols to the symbol table.
This commit is contained in:
jasonliu
parent
980653621e
commit
c9edaa828e
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@ -151,6 +151,8 @@ class XCOFFObjectWriter : public MCObjectWriter {
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// the same section and get handled in a 'similar' way.
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CsectGroup ProgramCodeCsects;
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CsectGroup DataCsects;
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CsectGroup FuncDSCsects;
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CsectGroup TOCCsects;
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CsectGroup BSSCsects;
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// The Predefined sections.
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@ -219,7 +221,7 @@ XCOFFObjectWriter::XCOFFObjectWriter(
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Text(".text", XCOFF::STYP_TEXT, /* IsVirtual */ false,
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CsectGroups{&ProgramCodeCsects}),
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Data(".data", XCOFF::STYP_DATA, /* IsVirtual */ false,
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CsectGroups{&DataCsects}),
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CsectGroups{&DataCsects, &FuncDSCsects, &TOCCsects}),
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BSS(".bss", XCOFF::STYP_BSS, /* IsVirtual */ true,
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CsectGroups{&BSSCsects}) {}
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@ -251,11 +253,20 @@ CsectGroup &XCOFFObjectWriter::getCsectGroup(const MCSectionXCOFF *MCSec) {
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return DataCsects;
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report_fatal_error("Unhandled mapping of read-write csect to section.");
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case XCOFF::XMC_DS:
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return FuncDSCsects;
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case XCOFF::XMC_BS:
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assert(XCOFF::XTY_CM == MCSec->getCSectType() &&
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"Mapping invalid csect. CSECT with bss storage class must be "
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"common type.");
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return BSSCsects;
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case XCOFF::XMC_TC0:
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assert(XCOFF::XTY_SD == MCSec->getCSectType() &&
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"Only an initialized csect can contain TOC-base.");
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assert(TOCCsects.empty() &&
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"We should have only one TOC-base, and it should be the first csect "
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"in this CsectGroup.");
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return TOCCsects;
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default:
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report_fatal_error("Unhandled mapping of csect to section.");
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}
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@ -281,10 +292,6 @@ void XCOFFObjectWriter::executePostLayoutBinding(MCAssembler &Asm,
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if (nameShouldBeInStringTable(MCSec->getSectionName()))
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Strings.add(MCSec->getSectionName());
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// TODO FIXME Handle emiting the TOC base.
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if (MCSec->getMappingClass() == XCOFF::XMC_TC0)
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continue;
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CsectGroup &Group = getCsectGroup(MCSec);
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Group.emplace_back(MCSec);
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WrapperMap[MCSec] = &Group.back();
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@ -322,7 +329,7 @@ void XCOFFObjectWriter::executePostLayoutBinding(MCAssembler &Asm,
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void XCOFFObjectWriter::recordRelocation(MCAssembler &, const MCAsmLayout &,
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const MCFragment *, const MCFixup &,
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MCValue, uint64_t &) {
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report_fatal_error("XCOFF relocations not supported.");
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// TODO: recordRelocation is not yet implemented.
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}
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void XCOFFObjectWriter::writeSections(const MCAssembler &Asm,
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@ -0,0 +1,112 @@
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; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mtriple powerpc-ibm-aix-xcoff -filetype=obj -o %t.o < %s
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; RUN: llvm-readobj --symbols %t.o | FileCheck %s
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define void @foo() {
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entry:
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ret void
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}
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; CHECK: File: {{.*}}aix-func-dsc-gen.ll.tmp.o
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; CHECK-NEXT: Format: aixcoff-rs6000
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; CHECK-NEXT: Arch: powerpc
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; CHECK-NEXT: AddressSize: 32bit
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; CHECK: Symbol {
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; CHECK-NEXT: Index: [[#Index:]]
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; CHECK-NEXT: Name: .text
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; CHECK-NEXT: Value (RelocatableAddress): 0x0
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; CHECK-NEXT: Section: .text
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; CHECK-NEXT: Type: 0x0
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; CHECK-NEXT: StorageClass: C_HIDEXT (0x6B)
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; CHECK-NEXT: NumberOfAuxEntries: 1
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; CHECK-NEXT: CSECT Auxiliary Entry {
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; CHECK-NEXT: Index: [[#Index+1]]
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; CHECK-NEXT: SectionLen: 4
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; CHECK-NEXT: ParameterHashIndex: 0x0
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; CHECK-NEXT: TypeChkSectNum: 0x0
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; CHECK-NEXT: SymbolAlignmentLog2: 4
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; CHECK-NEXT: SymbolType: XTY_SD (0x1)
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; CHECK-NEXT: StorageMappingClass: XMC_PR (0x0)
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; CHECK-NEXT: StabInfoIndex: 0x0
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; CHECK-NEXT: StabSectNum: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Index: [[#Index+2]]
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; CHECK-NEXT: Name: .foo
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; CHECK-NEXT: Value (RelocatableAddress): 0x0
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; CHECK-NEXT: Section: .text
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; CHECK-NEXT: Type: 0x0
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; CHECK-NEXT: StorageClass: C_EXT (0x2)
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; CHECK-NEXT: NumberOfAuxEntries: 1
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; CHECK-NEXT: CSECT Auxiliary Entry {
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; CHECK-NEXT: Index: [[#Index+3]]
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; CHECK-NEXT: ContainingCsectSymbolIndex: [[#Index]]
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; CHECK-NEXT: ParameterHashIndex: 0x0
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; CHECK-NEXT: TypeChkSectNum: 0x0
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; CHECK-NEXT: SymbolAlignmentLog2: 0
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; CHECK-NEXT: SymbolType: XTY_LD (0x2)
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; CHECK-NEXT: StorageMappingClass: XMC_PR (0x0)
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; CHECK-NEXT: StabInfoIndex: 0x0
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; CHECK-NEXT: StabSectNum: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Index: [[#Index+4]]
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; CHECK-NEXT: Name: foo
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; CHECK-NEXT: Value (RelocatableAddress): 0x4
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; CHECK-NEXT: Section: .data
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; CHECK-NEXT: Type: 0x0
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; CHECK-NEXT: StorageClass: C_HIDEXT (0x6B)
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; CHECK-NEXT: NumberOfAuxEntries: 1
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; CHECK-NEXT: CSECT Auxiliary Entry {
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; CHECK-NEXT: Index: [[#Index+5]]
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; CHECK-NEXT: SectionLen: 12
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; CHECK-NEXT: ParameterHashIndex: 0x0
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; CHECK-NEXT: TypeChkSectNum: 0x0
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; CHECK-NEXT: SymbolAlignmentLog2: 0
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; CHECK-NEXT: SymbolType: XTY_SD (0x1)
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; CHECK-NEXT: StorageMappingClass: XMC_DS (0xA)
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; CHECK-NEXT: StabInfoIndex: 0x0
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; CHECK-NEXT: StabSectNum: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Index: [[#Index+6]]
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; CHECK-NEXT: Name: foo
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; CHECK-NEXT: Value (RelocatableAddress): 0x4
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; CHECK-NEXT: Section: .data
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; CHECK-NEXT: Type: 0x0
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; CHECK-NEXT: StorageClass: C_EXT (0x2)
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; CHECK-NEXT: NumberOfAuxEntries: 1
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; CHECK-NEXT: CSECT Auxiliary Entry {
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; CHECK-NEXT: Index: [[#Index+7]]
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; CHECK-NEXT: ContainingCsectSymbolIndex: [[#Index+4]]
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; CHECK-NEXT: ParameterHashIndex: 0x0
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; CHECK-NEXT: TypeChkSectNum: 0x0
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; CHECK-NEXT: SymbolAlignmentLog2: 0
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; CHECK-NEXT: SymbolType: XTY_LD (0x2)
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; CHECK-NEXT: StorageMappingClass: XMC_DS (0xA)
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; CHECK-NEXT: StabInfoIndex: 0x0
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; CHECK-NEXT: StabSectNum: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Index: [[#Index+8]]
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; CHECK-NEXT: Name: TOC
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; CHECK-NEXT: Value (RelocatableAddress): 0x10
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; CHECK-NEXT: Section: .data
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; CHECK-NEXT: Type: 0x0
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; CHECK-NEXT: StorageClass: C_HIDEXT (0x6B)
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; CHECK-NEXT: NumberOfAuxEntries: 1
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; CHECK-NEXT: CSECT Auxiliary Entry {
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; CHECK-NEXT: Index: [[#Index+9]]
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; CHECK-NEXT: SectionLen: 0
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; CHECK-NEXT: ParameterHashIndex: 0x0
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; CHECK-NEXT: TypeChkSectNum: 0x0
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; CHECK-NEXT: SymbolAlignmentLog2: 0
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; CHECK-NEXT: SymbolType: XTY_SD (0x1)
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; CHECK-NEXT: StorageMappingClass: XMC_TC0 (0xF)
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; CHECK-NEXT: StabInfoIndex: 0x0
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; CHECK-NEXT: StabSectNum: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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