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[Object] Add getRISCVVendorRelocationTypeName to render RISCV vendor-specific relocations to strings. #168293

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Merged
merged 2 commits into from
Nov 17, 2025
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[Object] Add getRISCVVendorRelocationTypeName to render RISCV vendor-specific relocations to strings. #168293

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[Object] Add getRISCVVendorRelocationTypeName to render RISCV vendor-…
resistor Nov 16, 2025
e195056
Update style for review feedback.
resistor Nov 16, 2025
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2 changes: 2 additions & 0 deletions llvm/include/llvm/Object/ELF.h
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,8 @@ struct VersionEntry {
};

LLVM_ABI StringRef getELFRelocationTypeName(uint32_t Machine, uint32_t Type);
LLVM_ABI StringRef getRISCVVendorRelocationTypeName(uint32_t Type,
StringRef Vendor);
LLVM_ABI uint32_t getELFRelativeRelocationType(uint32_t Machine);
LLVM_ABI StringRef getELFSectionTypeName(uint32_t Machine, uint32_t Type);

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12 changes: 12 additions & 0 deletions llvm/lib/Object/ELF.cpp
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Expand Up @@ -191,6 +191,18 @@ StringRef llvm::object::getELFRelocationTypeName(uint32_t Machine,

#undef ELF_RELOC

#define ELF_RISCV_NONSTANDARD_RELOC(vendor, name, number) \
if (Vendor == #vendor && Type == number) \
return #name;

StringRef llvm::object::getRISCVVendorRelocationTypeName(uint32_t Type,
StringRef Vendor) {
#include "llvm/BinaryFormat/ELFRelocs/RISCV_nonstandard.def"
return "Unknown";
}

#undef ELF_RISCV_NONSTANDARD_RELOC

uint32_t llvm::object::getELFRelativeRelocationType(uint32_t Machine) {
switch (Machine) {
case ELF::EM_X86_64:
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14 changes: 14 additions & 0 deletions llvm/unittests/Object/ELFTest.cpp
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Expand Up @@ -255,6 +255,20 @@ TEST(ELFTest, getELFRelocationTypeNameForLoongArch) {
getELFRelocationTypeName(EM_LOONGARCH, R_LARCH_CALL36));
}

TEST(ELFTest, getRISCVVendorRelocationTypeName) {
EXPECT_EQ("R_RISCV_QC_ABS20_U",
getRISCVVendorRelocationTypeName(R_RISCV_CUSTOM192, "QUALCOMM"));
EXPECT_EQ("R_RISCV_QC_E_BRANCH",
getRISCVVendorRelocationTypeName(R_RISCV_CUSTOM193, "QUALCOMM"));
EXPECT_EQ("R_RISCV_QC_E_32",
getRISCVVendorRelocationTypeName(R_RISCV_CUSTOM194, "QUALCOMM"));
EXPECT_EQ("R_RISCV_QC_E_CALL_PLT",
getRISCVVendorRelocationTypeName(R_RISCV_CUSTOM195, "QUALCOMM"));

EXPECT_EQ("R_RISCV_NDS_BRANCH_10",
getRISCVVendorRelocationTypeName(R_RISCV_CUSTOM241, "ANDES"));
}

TEST(ELFTest, getELFRelativeRelocationType) {
EXPECT_EQ(ELF::R_VE_RELATIVE, getELFRelativeRelocationType(EM_VE));
EXPECT_EQ(ELF::R_LARCH_RELATIVE, getELFRelativeRelocationType(EM_LOONGARCH));
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