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hpoussinhpoussin
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[yaml2obj][obj2yaml][objdump] Handle MIPS COFF files
- handle IMAGE_FILE_MACHINE_R4000 machine type - handle MIPS COFF relocations llvm-objdump can now parse MIPS COFF files.
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5 files changed

+127
-0
lines changed

5 files changed

+127
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lines changed

‎llvm/include/llvm/Object/WindowsMachineFlag.h

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -43,6 +43,8 @@ template <typename T> Triple::ArchType getMachineArchType(T machine) {
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case COFF::IMAGE_FILE_MACHINE_ARM64EC:
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case COFF::IMAGE_FILE_MACHINE_ARM64X:
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return llvm::Triple::ArchType::aarch64;
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case COFF::IMAGE_FILE_MACHINE_R4000:
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return llvm::Triple::ArchType::mipsel;
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default:
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return llvm::Triple::ArchType::UnknownArch;
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}

‎llvm/include/llvm/ObjectYAML/COFFYAML.h

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Original file line numberDiff line numberDiff line change
@@ -179,6 +179,10 @@ struct ScalarEnumerationTraits<COFF::RelocationTypeAMD64> {
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static void enumeration(IO &IO, COFF::RelocationTypeAMD64 &Value);
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};
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template <> struct ScalarEnumerationTraits<COFF::RelocationTypesMips> {
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static void enumeration(IO &IO, COFF::RelocationTypesMips &Value);
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};
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template <>
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struct ScalarEnumerationTraits<COFF::RelocationTypesARM> {
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static void enumeration(IO &IO, COFF::RelocationTypesARM &Value);

‎llvm/lib/Object/COFFObjectFile.cpp

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1132,6 +1132,8 @@ StringRef COFFObjectFile::getFileFormatName() const {
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return "COFF-ARM64EC";
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case COFF::IMAGE_FILE_MACHINE_ARM64X:
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return "COFF-ARM64X";
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case COFF::IMAGE_FILE_MACHINE_R4000:
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return "COFF-MIPS";
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default:
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return "COFF-<unknown arch>";
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}

‎llvm/lib/ObjectYAML/COFFYAML.cpp

Lines changed: 23 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -183,6 +183,25 @@ void ScalarEnumerationTraits<COFF::RelocationTypeAMD64>::enumeration(
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ECase(IMAGE_REL_AMD64_SSPAN32);
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}
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void ScalarEnumerationTraits<COFF::RelocationTypesMips>::enumeration(
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IO &IO, COFF::RelocationTypesMips &Value) {
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ECase(IMAGE_REL_MIPS_ABSOLUTE);
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ECase(IMAGE_REL_MIPS_REFHALF);
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ECase(IMAGE_REL_MIPS_REFWORD);
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ECase(IMAGE_REL_MIPS_JMPADDR);
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ECase(IMAGE_REL_MIPS_REFHI);
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ECase(IMAGE_REL_MIPS_REFLO);
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ECase(IMAGE_REL_MIPS_GPREL);
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ECase(IMAGE_REL_MIPS_LITERAL);
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ECase(IMAGE_REL_MIPS_SECTION);
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ECase(IMAGE_REL_MIPS_SECREL);
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ECase(IMAGE_REL_MIPS_SECRELLO);
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ECase(IMAGE_REL_MIPS_SECRELHI);
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ECase(IMAGE_REL_MIPS_JMPADDR16);
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ECase(IMAGE_REL_MIPS_REFWORDNB);
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ECase(IMAGE_REL_MIPS_PAIR);
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}
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void ScalarEnumerationTraits<COFF::RelocationTypesARM>::enumeration(
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IO &IO, COFF::RelocationTypesARM &Value) {
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ECase(IMAGE_REL_ARM_ABSOLUTE);
@@ -427,6 +446,10 @@ void MappingTraits<COFFYAML::Relocation>::mapping(IO &IO,
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MappingNormalization<NType<COFF::RelocationTypeAMD64>, uint16_t> NT(
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IO, Rel.Type);
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IO.mapRequired("Type", NT->Type);
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} else if (H.Machine == COFF::IMAGE_FILE_MACHINE_R4000) {
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MappingNormalization<NType<COFF::RelocationTypesMips>, uint16_t> NT(
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IO, Rel.Type);
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IO.mapRequired("Type", NT->Type);
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} else if (H.Machine == COFF::IMAGE_FILE_MACHINE_ARMNT) {
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MappingNormalization<NType<COFF::RelocationTypesARM>, uint16_t> NT(
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IO, Rel.Type);

‎llvm/test/tools/yaml2obj/COFF/basic-mips.yaml

Lines changed: 96 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,96 @@
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# RUN: yaml2obj %s -o %t
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# RUN: llvm-readobj --file-headers %t | FileCheck %s
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# RUN: obj2yaml %t | FileCheck %s --check-prefix=ROUNDTRIP
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# CHECK: OptionalHeaderSize: 224
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# CHECK: ImageBase: 0x40000000
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# ROUNDTRIP: ImageBase: 1073741824
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# ROUNDTRIP: VirtualAddress: 4096
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# ROUNDTRIP: VirtualAddress: 8192
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# ROUNDTRIP: VirtualAddress: 12288
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--- !COFF
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OptionalHeader:
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AddressOfEntryPoint: 4096
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ImageBase: 1073741824
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SectionAlignment: 4096
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FileAlignment: 512
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MajorOperatingSystemVersion: 6
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MinorOperatingSystemVersion: 0
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MajorImageVersion: 0
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MinorImageVersion: 0
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MajorSubsystemVersion: 6
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MinorSubsystemVersion: 0
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Subsystem: IMAGE_SUBSYSTEM_WINDOWS_CUI
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DLLCharacteristics: [ IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE ]
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SizeOfStackReserve: 1048576
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SizeOfStackCommit: 4096
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SizeOfHeapReserve: 1048576
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SizeOfHeapCommit: 4096
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ExportTable:
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RelativeVirtualAddress: 0
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Size: 0
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ImportTable:
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RelativeVirtualAddress: 0
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Size: 0
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ResourceTable:
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RelativeVirtualAddress: 0
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Size: 0
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ExceptionTable:
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RelativeVirtualAddress: 12288
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Size: 8
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CertificateTable:
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RelativeVirtualAddress: 0
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Size: 0
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BaseRelocationTable:
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RelativeVirtualAddress: 0
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Size: 0
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Debug:
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RelativeVirtualAddress: 0
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Size: 0
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Architecture:
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RelativeVirtualAddress: 0
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Size: 0
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GlobalPtr:
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RelativeVirtualAddress: 0
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Size: 0
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TlsTable:
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RelativeVirtualAddress: 0
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Size: 0
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LoadConfigTable:
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RelativeVirtualAddress: 0
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Size: 0
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BoundImport:
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RelativeVirtualAddress: 0
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Size: 0
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IAT:
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RelativeVirtualAddress: 0
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Size: 0
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DelayImportDescriptor:
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RelativeVirtualAddress: 0
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Size: 0
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ClrRuntimeHeader:
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RelativeVirtualAddress: 0
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Size: 0
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header:
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Machine: IMAGE_FILE_MACHINE_R4000
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Characteristics: [ IMAGE_FILE_EXECUTABLE_IMAGE ]
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sections:
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- Name: .text
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Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
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VirtualAddress: 4096
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VirtualSize: 4
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SectionData: C0035FD6
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- Name: .rdata
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Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
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VirtualAddress: 8192
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VirtualSize: 12
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SectionData: 0100400800000000E4E3E3E3
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- Name: .pdata
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Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
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VirtualAddress: 12288
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VirtualSize: 8
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SectionData: '0010000000200000'
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symbols: []
96+
...

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