2018-06-06 21:56:51 +08:00
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# REQUIRES: x86
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2020-08-21 06:00:25 +08:00
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# RUN: yaml2obj %s -o %t.obj
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[COFF] Implement /safeseh:no and check @feat.00 flags by default
Summary:
Fixes PR41828. Before this, LLD always emitted SafeSEH chunks and
defined __safe_se_handler_table & size. Now, /safeseh:no leaves those
undefined.
Additionally, we were checking for the safeseh @feat.00 flag in two
places: once to emit errors, and once during safeseh table construction.
The error was set up to be off by default, but safeseh is supposed to be
on by default. I combined the two checks, so now LLD emits an error if
an input object lacks @feat.00 and safeseh is enabled. This caused the
majority of 32-bit LLD tests to fail, since many test input object files
lack @feat.00 symbols. I explicitly added -safeseh:no to those tests to
preserve behavior.
Finally, LLD no longer sets IMAGE_DLL_CHARACTERISTICS_NO_SEH if any
input file wasn't compiled for safeseh.
Reviewers: mstorsjo, ruiu, thakis
Reviewed By: ruiu, thakis
Subscribers: llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63570
llvm-svn: 366238
2019-07-17 02:17:33 +08:00
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# RUN: lld-link -safeseh:no /out:%t.exe /entry:main /base:0x400000 %t.obj
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2015-07-08 09:45:29 +08:00
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# RUN: llvm-objdump -d %t.exe | FileCheck %s
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# CHECK: .text:
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2015-07-30 00:30:45 +08:00
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# CHECK: 1000: a1 00 00 00 00
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# CHECK: 1005: a1 03 20 40 00
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# CHECK: 100a: a1 03 20 00 00
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# CHECK: 100f: a1 ef 0f 00 00
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# CHECK: 1014: a1 00 00 02 00
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# CHECK: 1019: a1 03 00 00 00
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2015-07-08 09:45:29 +08:00
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2016-06-28 04:17:08 +08:00
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--- !COFF
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2015-07-08 09:45:29 +08:00
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header:
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Machine: IMAGE_FILE_MACHINE_I386
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Characteristics: []
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sections:
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- Name: .text
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Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
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Alignment: 4096
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SectionData: A100000000A100000000A100000000A100000000A100000000A100000000
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Relocations:
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- VirtualAddress: 1
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2015-07-30 00:30:45 +08:00
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SymbolName: _foo
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2015-07-08 09:45:29 +08:00
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Type: IMAGE_REL_I386_ABSOLUTE
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- VirtualAddress: 6
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2015-07-30 00:30:45 +08:00
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SymbolName: _foo
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2015-07-08 09:45:29 +08:00
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Type: IMAGE_REL_I386_DIR32
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- VirtualAddress: 11
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2015-07-30 00:30:45 +08:00
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SymbolName: _foo
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2015-07-08 09:45:29 +08:00
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Type: IMAGE_REL_I386_DIR32NB
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- VirtualAddress: 16
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2015-07-30 00:30:45 +08:00
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SymbolName: _foo
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2015-07-08 09:45:29 +08:00
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Type: IMAGE_REL_I386_REL32
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- VirtualAddress: 23
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2015-07-30 00:30:45 +08:00
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SymbolName: _foo
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2015-07-08 09:45:29 +08:00
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Type: IMAGE_REL_I386_SECTION
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- VirtualAddress: 26
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2015-07-30 00:30:45 +08:00
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SymbolName: _foo
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2015-07-08 09:45:29 +08:00
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Type: IMAGE_REL_I386_SECREL
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2015-07-30 00:30:45 +08:00
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- Name: .zzz
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Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
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Alignment: 4096
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SectionData: 0000000000000000
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2015-07-08 09:45:29 +08:00
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symbols:
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- Name: .text
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Value: 0
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SectionNumber: 1
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_NULL
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StorageClass: IMAGE_SYM_CLASS_STATIC
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SectionDefinition:
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Length: 6
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NumberOfRelocations: 0
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NumberOfLinenumbers: 0
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CheckSum: 0
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Number: 0
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2015-07-30 00:30:45 +08:00
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- Name: .zzz
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Value: 0
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SectionNumber: 2
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_NULL
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StorageClass: IMAGE_SYM_CLASS_STATIC
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SectionDefinition:
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Length: 8
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NumberOfRelocations: 0
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NumberOfLinenumbers: 0
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CheckSum: 0
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Number: 0
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2015-07-10 03:54:13 +08:00
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- Name: _main
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2015-07-08 09:45:29 +08:00
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Value: 0
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SectionNumber: 1
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_NULL
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StorageClass: IMAGE_SYM_CLASS_EXTERNAL
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2015-07-30 00:30:45 +08:00
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- Name: _foo
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Value: 3
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SectionNumber: 2
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_NULL
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StorageClass: IMAGE_SYM_CLASS_EXTERNAL
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2015-07-08 09:45:29 +08:00
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...
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