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clang-p2996/lld/test/COFF/symtab.test
Alvin Wong 37bd099daf [LLD][COFF] Fix absolute & synthetic symbols in COFF symbol table 
Absolute symbol should contain its absolute value, but LLD had been
writing its RVA instead. Write its VA instead.

DefinedSynthetic were being skipped before with the reasoning "Relative
symbols are unrepresentable in a COFF symbol table", which is only true
if the RVA points to outside of a section. LLD does create synthetic
symbols which points to actual data chunks (typical for symbols embedded
into the load config directory). Write these symbols to the COFF symbol
table too.

Reviewed By: mstorsjo

Differential Revision: https://reviews.llvm.org/D134462
2022-09-26 11:05:41 +03:00

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# RUN: yaml2obj %s -o %t.obj
# RUN: lld-link /debug:dwarf /out:%t.exe /entry:main %t.obj %p/Inputs/std64.lib
# RUN: llvm-readobj --symbols %t.exe | FileCheck %s
# RUN: lld-link /debug:dwarf /opt:noref /out:%t.exe /entry:main %t.obj %p/Inputs/std64.lib
# RUN: llvm-readobj --symbols %t.exe | FileCheck %s
# RUN: lld-link /debug:symtab /opt:noref /out:%t.exe /entry:main %t.obj %p/Inputs/std64.lib
# RUN: llvm-readobj --symbols %t.exe | FileCheck %s
# RUN: lld-link /debug /out:%t.exe /entry:main %t.obj %p/Inputs/std64.lib
# RUN: llvm-readobj --symbols %t.exe | FileCheck -check-prefix=NO %s
# CHECK: Symbols [
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: MessageBoxA
# CHECK-NEXT: Value: 80
# CHECK-NEXT: Section: .text (1)
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Function (0x2)
# CHECK-NEXT: StorageClass: External (0x2)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: __imp_MessageBoxA
# CHECK-NEXT: Value:
# CHECK-NEXT: Section: .rdata (2)
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Null (0x0)
# CHECK-NEXT: StorageClass: External (0x2)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: ExitProcess
# CHECK-NEXT: Value: 64
# CHECK-NEXT: Section: .text (1)
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Function (0x2)
# CHECK-NEXT: StorageClass: External (0x2)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: __imp_ExitProcess
# CHECK-NEXT: Value:
# CHECK-NEXT: Section: .rdata (2)
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Null (0x0)
# CHECK-NEXT: StorageClass: External (0x2)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: message
# CHECK-NEXT: Value: 6
# CHECK-NEXT: Section: .text2
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Null (0x0)
# CHECK-NEXT: StorageClass: Static (0x3)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: main
# CHECK-NEXT: Value: 0
# CHECK-NEXT: Section: .text (1)
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Null (0x0)
# CHECK-NEXT: StorageClass: External (0x2)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: caption
# CHECK-NEXT: Value: 0
# CHECK-NEXT: Section: .text2
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Null (0x0)
# CHECK-NEXT: StorageClass: Static (0x3)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: abs_symbol
# CHECK-NEXT: Value: 3735928559
# CHECK-NEXT: Section: IMAGE_SYM_ABSOLUTE (-1)
# CHECK-NEXT: BaseType: Null (0x0)
# CHECK-NEXT: ComplexType: Null (0x0)
# CHECK-NEXT: StorageClass: External (0x2)
# CHECK-NEXT: AuxSymbolCount: 0
# CHECK-NEXT: }
# CHECK-NEXT: ]
# NO: Symbols [
--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_AMD64
Characteristics: []
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 4096
SectionData: B800000000000000005068000000000000000068000000000000000050E8000000000000000050E8000000000000000050E80000000000000000
Relocations:
- VirtualAddress: 0
SymbolName: abs_symbol
Type: IMAGE_REL_AMD64_ADDR64
- VirtualAddress: 7
SymbolName: caption
Type: IMAGE_REL_AMD64_ADDR64
- VirtualAddress: 12
SymbolName: message
Type: IMAGE_REL_AMD64_ADDR64
- VirtualAddress: 18
SymbolName: MessageBoxA
Type: IMAGE_REL_AMD64_REL32
- VirtualAddress: 24
SymbolName: ExitProcess
Type: IMAGE_REL_AMD64_REL32
- VirtualAddress: 30
SymbolName: __ImageBase
Type: IMAGE_REL_AMD64_ADDR64
- Name: .text2
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 4096
SectionData: B800000000000000005068000000000000000068000000000000000050E8000000000000000050E8000000000000000050E80000000000000000
Relocations:
- VirtualAddress: 0
SymbolName: abs_symbol
Type: IMAGE_REL_AMD64_ADDR64
- VirtualAddress: 7
SymbolName: caption
Type: IMAGE_REL_AMD64_ADDR64
- VirtualAddress: 12
SymbolName: message
Type: IMAGE_REL_AMD64_ADDR64
- VirtualAddress: 18
SymbolName: MessageBoxA
Type: IMAGE_REL_AMD64_REL32
- VirtualAddress: 24
SymbolName: ExitProcess
Type: IMAGE_REL_AMD64_REL32
- VirtualAddress: 30
SymbolName: __ImageBase
Type: IMAGE_REL_AMD64_ADDR64
- Name: .data
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
Alignment: 4
SectionData: 48656C6C6F0048656C6C6F20576F726C6400
symbols:
- Name: "@comp.id"
Value: 10394907
SectionNumber: 65535
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 28
NumberOfRelocations: 6
NumberOfLinenumbers: 0
CheckSum: 0
Number: 0
- Name: .text2
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 28
NumberOfRelocations: 6
NumberOfLinenumbers: 0
CheckSum: 0
Number: 0
- Name: .data
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 18
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 0
- Name: MessageBoxA
Value: 0
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: ExitProcess
Value: 0
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: message
Value: 6
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
- Name: main
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: caption
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
- Name: abs_symbol
Value: 0xDEADBEEF
SectionNumber: -1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: __ImageBase
Value: 0
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: .Ltemp_symbol
Value: 1
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_LABEL
...
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