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

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COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
# RUN: yaml2obj < %s > %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
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
# RUN: llvm-readobj -file-headers %t.exe | FileCheck -check-prefix=HEADER %s
# RUN: llvm-objdump -unwind-info %t.exe | FileCheck -check-prefix=UNWIND %s
#
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
# RUN: lld-link /merge:.pdata=.rdata /out:%t.exe /entry:main %t.obj
# RUN: llvm-readobj -file-headers -sections %t.exe | FileCheck -check-prefix=HEADER-MERGE %s
#
# HEADER: ExceptionTableRVA: 0x3000
#
# FIXME: llvm-readobj currently does not understand files with .pdata merged
# into .rdata. But we can at least check that the section headers look correct.
#
COFF: Use (name, output characteristics) as a key when grouping input sections into output sections. This is what link.exe does and lets us avoid needing to worry about merging output characteristics while adding input sections to output sections. With this change we can't process /merge in the same way as before because sections with different output characteristics can still be merged into one another. So this change moves the processing of /merge to just before we assign addresses. In the case where there are multiple output sections with the same name, link.exe only merges the first section with the source name into the first section with the target name, and we do the same. At the same time I also implemented transitive merging (which means that /merge:.c=.b /merge:.b=.a merges both .c and .b into .a). This isn't quite enough though because link.exe has a special case for .CRT in 32-bit mode: it processes sections whose output characteristics are DATA | R | W as though the output characteristics were DATA | R (so that they get merged into things like constructor lists in the expected way). Chromium has a few such sections, and it turns out that those sections were causing the problem that resulted in r318699 (merge .xdata into .rdata) being reverted: because of the previous permission merging semantics, the .CRT sections were causing the entire .rdata section to become writable, which caused the SEH runtime to crash because it apparently requires .xdata to be read-only. This change also implements the same special case. This should unblock being able to merge .xdata into .rdata by default, as well as .bss into .data, both of which will be done in followups. Differential Revision: https://reviews.llvm.org/D45801 llvm-svn: 330479
2018-04-21 05:10:33 +08:00
# HEADER-MERGE: ExceptionTableRVA: 0x2004
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
# HEADER-MERGE-NEXT: ExceptionTableSize: 0x30
# HEADER-MERGE: Name: .rdata
# HEADER-MERGE-NEXT: VirtualSize: 0x34
# HEADER-MERGE-NEXT: VirtualAddress: 0x2000
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
#
# UNWIND: Function Table:
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
# UNWIND: Start Address: 0x1000
# UNWIND: End Address: 0x101b
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
# UNWIND: Unwind Info Address: 0x4000
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
# UNWIND: Version: 1
# UNWIND: Flags: 1 UNW_ExceptionHandler
# UNWIND: Size of prolog: 18
# UNWIND: Number of Codes: 8
# UNWIND: Frame register: RBX
# UNWIND: Frame offset: 0
# UNWIND: Unwind Codes:
# UNWIND: 0x12: UOP_SetFPReg
# UNWIND: 0x0f: UOP_PushNonVol RBX
# UNWIND: 0x0e: UOP_SaveXMM128 XMM8 [0x0000]
# UNWIND: 0x09: UOP_SaveNonVol RSI [0x0010]
# UNWIND: 0x04: UOP_AllocSmall 24
# UNWIND: 0x00: UOP_PushMachFrame w/o error code
# UNWIND: Function Table:
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
# UNWIND: Start Address: 0x1012
# UNWIND: End Address: 0x1012
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
# UNWIND: Unwind Info Address: 0x401c
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
# UNWIND: Version: 1
# UNWIND: Flags: 4 UNW_ChainInfo
# UNWIND: Size of prolog: 0
# UNWIND: Number of Codes: 0
# UNWIND: No frame pointer used
# UNWIND: Function Table:
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
# UNWIND: Start Address: 0x101b
# UNWIND: End Address: 0x101c
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
# UNWIND: Unwind Info Address: 0x402c
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
# UNWIND: Version: 1
# UNWIND: Flags: 0
# UNWIND: Size of prolog: 0
# UNWIND: Number of Codes: 0
# UNWIND: No frame pointer used
# UNWIND: Function Table:
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
# UNWIND: Start Address: 0x101c
# UNWIND: End Address: 0x1039
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
# UNWIND: Unwind Info Address: 0x4034
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
# UNWIND: Version: 1
# UNWIND: Flags: 0
# UNWIND: Size of prolog: 14
# UNWIND: Number of Codes: 6
# UNWIND: No frame pointer used
# UNWIND: Unwind Codes:
# UNWIND: 0x0e: UOP_AllocLarge 8454128
# UNWIND: 0x07: UOP_AllocLarge 8190
# UNWIND: 0x00: UOP_PushMachFrame w/o error code
[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: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +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: 4883EC184889742410440F110424534889E3488D235B4883C418C3C34881ECF0FF00004881ECF0FF80004881C4F0FF80004881C4F0FF0000C3
- Name: .xdata
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData: 0912080312030F300E880000096402000422001A000000000000000021000000000000001B000000000000000100000000000000010E06000E11F0FF80000701FE1F001A
Relocations:
- VirtualAddress: 20
SymbolName: __C_specific_handler
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 32
SymbolName: func
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 36
SymbolName: func
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 40
SymbolName: .xdata
Type: IMAGE_REL_AMD64_ADDR32NB
- Name: .pdata
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData: 000000001B0000000000000012000000120000001C00000000000000010000002C000000000000001D00000034000000
Relocations:
- VirtualAddress: 0
SymbolName: func
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 4
SymbolName: func
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 8
SymbolName: .xdata
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 12
SymbolName: func
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 16
SymbolName: func
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 20
SymbolName: .xdata
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 24
SymbolName: smallFunc
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 28
SymbolName: smallFunc
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 32
SymbolName: .xdata
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 36
SymbolName: allocFunc
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 40
SymbolName: allocFunc
Type: IMAGE_REL_AMD64_ADDR32NB
- VirtualAddress: 44
SymbolName: .xdata
Type: IMAGE_REL_AMD64_ADDR32NB
COFF: Process /merge flag as we create output sections. With this we can merge builtin sections. Differential Revision: https://reviews.llvm.org/D45350 llvm-svn: 329471
2018-04-07 08:46:55 +08:00
- Name: .rdata
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData: 00000000
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 57
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 1
- Name: .xdata
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 68
NumberOfRelocations: 4
NumberOfLinenumbers: 0
CheckSum: 0
Number: 2
- Name: .pdata
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 48
NumberOfRelocations: 12
NumberOfLinenumbers: 0
CheckSum: 0
Number: 3
- Name: func
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: __C_specific_handler
Value: 0
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: smallFunc
Value: 27
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: allocFunc
Value: 28
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
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
- Name: main
COFF: Support exception table. .pdata section contains a list of triplets of function start address, function end address and its unwind information. Linkers have to sort section contents by function start address and set the section address to the file header (so that runtime is able to find it and do binary search.) This change seems to resolve all but one remaining test failures in check{,-clang,-lld} when building the entire stuff with clang-cl and lld-link. llvm-svn: 240231
2015-06-21 12:00:54 +08:00
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: __C_specific_handler
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...