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[mips] Handle R_MIPS_TLS_DTPREL32/64 relocations in the RelocVisitor
Debug information for TLS variables on MIPS might have R_MIPS_TLS_DTPREL32 or R_MIPS_TLS_DTPREL64 relocations. This patch adds a support for such relocations in the `RelocVisitor`. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311031 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -169,6 +169,8 @@ private:
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return (Value + getELFAddend(R)) & 0xFFFFFFFF;
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case ELF::R_MIPS_64:
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return Value + getELFAddend(R);
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case ELF::R_MIPS_TLS_DTPREL64:
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return Value + getELFAddend(R) - 0x8000;
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}
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HasError = true;
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return 0;
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@ -260,8 +262,11 @@ private:
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}
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uint64_t visitMips32(uint32_t Rel, RelocationRef R, uint64_t Value) {
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// FIXME: Take in account implicit addends to get correct results.
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if (Rel == ELF::R_MIPS_32)
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return Value & 0xFFFFFFFF;
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if (Rel == ELF::R_MIPS_TLS_DTPREL32)
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return Value & 0xFFFFFFFF;
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HasError = true;
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return 0;
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}
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21
test/DebugInfo/Mips/dwarfdump-tls.ll
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21
test/DebugInfo/Mips/dwarfdump-tls.ll
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@ -0,0 +1,21 @@
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; RUN: llc -O0 -march=mips -mcpu=mips32r2 -filetype=obj -o=%t-32.o < %s
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; RUN: llvm-dwarfdump %t-32.o 2>&1 | FileCheck %s
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; RUN: llc -O0 -march=mips64 -mcpu=mips64r2 -filetype=obj -o=%t-64.o < %s
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; RUN: llvm-dwarfdump %t-64.o 2>&1 | FileCheck %s
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@x = thread_local global i32 5, align 4, !dbg !0
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; CHECK-NOT: error: failed to compute relocation: R_MIPS_TLS_DTPREL
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8}
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!0 = !DIGlobalVariableExpression(var: !1)
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!1 = distinct !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 4.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "tls.c", directory: "/tmp")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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