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llvm-project/lld/test/COFF/subsystem-inference32.test

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lld-link: Fix subsystem inference for non-console apps on 32-bit, and fix entry point inference on 32-bit with /nodefaultlib LinkerDriver::inferSubsystem() used to do Symtab->findUnderscore("WinMain"), but WinMain is stdcall in 32-bit and is hence is called _WinMain@16. Instead, Symtab->findMangle(mangle("WinMain")) needs to be called. But since LinkerDriver::inferSubsystem() and LinkerDriver::findDefaultEntry() both need to call this, introduce a common helper function for this and call it from both places. (Also call it for "main" for consistency, even though findUnderscore() is enough for main since that's __cdecl on 32-bit). This also exposed a bug for /nodefaultlib entrypoint inference: The code here called findMangle(Sym) instead of findMangle(mangle(Sym)), again doing the wrong thing on 32-bit. Fix that too. While here, make Driver::mangle() a static free function. https://reviews.llvm.org/D50184 llvm-svn: 338877
2018-08-03 20:00:12 +08:00
# RUN: sed -e s/ENTRYNAME/_main/ %s | yaml2obj > %t.obj
# RUN: lld-link /out:%t.exe %t.obj
# RUN: llvm-readobj -file-headers %t.exe | FileCheck -check-prefix=MAIN %s
# RUN: sed s/ENTRYNAME/_wmain/ %s | yaml2obj > %t.obj
# RUN: lld-link /out:%t.exe %t.obj
# RUN: llvm-readobj -file-headers %t.exe | FileCheck -check-prefix=WMAIN %s
# RUN: sed s/ENTRYNAME/_WinMain@16/ %s | yaml2obj > %t.obj
# RUN: lld-link /out:%t.exe %t.obj
# RUN: llvm-readobj -file-headers %t.exe | FileCheck -check-prefix=WINMAIN %s
# RUN: sed s/ENTRYNAME/_wWinMain@16/ %s | yaml2obj > %t.obj
# RUN: lld-link /out:%t.exe %t.obj
# RUN: llvm-readobj -file-headers %t.exe | FileCheck -check-prefix=WWINMAIN %s
# MAIN: Subsystem: IMAGE_SUBSYSTEM_WINDOWS_CUI
# WMAIN: Subsystem: IMAGE_SUBSYSTEM_WINDOWS_CUI
# WINMAIN: Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
# WWINMAIN: Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_I386
Characteristics: []
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData: B82A000000C3
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 6
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 0
- Name: ENTRYNAME
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: _mainCRTStartup
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: _wmainCRTStartup
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: _WinMainCRTStartup
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: _wWinMainCRTStartup
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...