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llvm-project/lld/test/COFF/common.test

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[LLD] Mark a number of x86 only tests to require x86 Noticed while testing for an out of tree target. There are probably more tests that should be so marked. I'm not sure who owns these tests so I've added a few names I recognise from the recent history. With advice from probinson, ruiu, rafael and dramatically improved by davidb. Thank you all! Differential Revision: https://reviews.llvm.org/D34685 llvm-svn: 308335
2017-07-19 02:40:50 +08:00
# REQUIRES: x86
[test] Replace `yaml2obj >` with `yaml2obj -o` and remove unneeded input redirection
2020-08-21 06:00:25 +08:00
# RUN: yaml2obj %s -o %t.obj
COFF: Make test commands shorter. NFC. llvm-svn: 244227
2015-08-07 00:47:46 +08:00
# RUN: lld-link /out:%t.exe /entry:main %t.obj %t.obj
COFF: Fix a common symbol bug. This is a case that one mistake caused a very mysterious bug. I made a mistake to calculate addresses of common symbols, so each common symbol pointed not to the beginning of its location but to the end of its location. (Ouch!) Common symbols are aligned on 16 byte boundaries. If a common symbol is small enough to fit between the end of its real location and whatever comes next, this bug didn't cause any harm. However, if a common symbol is larger than that, its memory naturally overlapped with other symbols. That means some uninitialized variables accidentally shared memory. Because totally unrelated memory writes mutated other varaibles, it was hard to debug. It's surprising that LLD was able to link itself and all LLD tests except gunit tests passed with this nasty bug. With this fix, the new COFF linker is able to pass all tests for LLVM, Clang and LLD if I use MSVC cl.exe as a compiler. Only three tests are failing when used with clang-cl. llvm-svn: 240216
2015-06-20 15:21:57 +08:00
# RUN: llvm-objdump -d %t.exe | FileCheck %s
# Operands of B8 (MOV EAX) are common symbols
COFF: Layout sections in the same order as link.exe One place where this seems to matter is to make sure the .rsrc section comes after .text. The Win32 UpdateResource() function can change the contents of .rsrc. It will move the sections that come after, but if .text gets moved, the entry point header will not get updated and the executable breaks. This was found by a test in Chromium. Differential Revision: https://reviews.llvm.org/D45260 llvm-svn: 329221
2018-04-05 03:15:55 +08:00
# CHECK: 1000: b8 00 20 00 40
# CHECK: 1005: b8 04 20 00 40
# CHECK: 100a: b8 20 20 00 40
# CHECK: 100f: b8 60 20 00 40
# CHECK: 1014: b8 70 20 00 40
COFF: Fix logic to find default entry name or subsystem. The previous logic to find default entry name or subsystem does not seem correct (i.e. was not compatible with MSVC linker). Previously, default entry name was inferred from CRT functions and user-defined entry functions. Subsystem was inferred from CRT functions. Default entry name and subsystem are now inferred based on the following table. Note that we no longer use CRT functions to infer them. Entry name Subsystem main mainCRTStartup console wmain wmainCRTStartup console WinMain WinMainCRTStartup windows wWinMain wWinMainCRTStartup windows llvm-svn: 240922
2015-06-29 09:03:53 +08:00
[yaml2obj] Updating LLD tests to account for LLVM r273915 This removed the -format flag from yaml2obj in favor of YAML tags. llvm-svn: 273920
2016-06-28 04:17:08 +08:00
--- !COFF
COFF: Fix logic to find default entry name or subsystem. The previous logic to find default entry name or subsystem does not seem correct (i.e. was not compatible with MSVC linker). Previously, default entry name was inferred from CRT functions and user-defined entry functions. Subsystem was inferred from CRT functions. Default entry name and subsystem are now inferred based on the following table. Note that we no longer use CRT functions to infer them. Entry name Subsystem main mainCRTStartup console wmain wmainCRTStartup console WinMain WinMainCRTStartup windows wWinMain wWinMainCRTStartup windows llvm-svn: 240922
2015-06-29 09:03:53 +08:00
header:
Machine: IMAGE_FILE_MACHINE_AMD64
Characteristics: []
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData: b800000000b800000000b800000000b800000000b800000000
Relocations:
- VirtualAddress: 1
SymbolName: bssdata4
Type: IMAGE_REL_AMD64_ADDR32
- VirtualAddress: 6
SymbolName: bsspad1
Type: IMAGE_REL_AMD64_ADDR32
- VirtualAddress: 11
SymbolName: bssdata64
Type: IMAGE_REL_AMD64_ADDR32
- VirtualAddress: 16
SymbolName: bsspad2
Type: IMAGE_REL_AMD64_ADDR32
- VirtualAddress: 21
SymbolName: bssdata16
Type: IMAGE_REL_AMD64_ADDR32
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 0
NumberOfRelocations: 5
NumberOfLinenumbers: 0
CheckSum: 0
Number: 0
- Name: main
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: bssdata4
Value: 4
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: bsspad1
Value: 1
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: bssdata64
Value: 64
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: bsspad2
Value: 1
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: bssdata16
Re-land r361206 "[COFF] Store alignment in log2 form, NFC" The previous patch lost the call to PowerOf2Ceil, which causes LLD to crash when handling common symbols with a non-power-of-2 size. I tweaked the existing common.test to make the bsspad16 common symbol be 15 bytes to add coverage for this case. llvm-svn: 361426
2019-05-23 04:21:52 +08:00
Value: 15
COFF: Fix logic to find default entry name or subsystem. The previous logic to find default entry name or subsystem does not seem correct (i.e. was not compatible with MSVC linker). Previously, default entry name was inferred from CRT functions and user-defined entry functions. Subsystem was inferred from CRT functions. Default entry name and subsystem are now inferred based on the following table. Note that we no longer use CRT functions to infer them. Entry name Subsystem main mainCRTStartup console wmain wmainCRTStartup console WinMain WinMainCRTStartup windows wWinMain wWinMainCRTStartup windows llvm-svn: 240922
2015-06-29 09:03:53 +08:00
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...