dd72278fea
The COMDAT section is a section with a special attribute to tell the linker whether the symbols in the section are allowed to be merged or not. This patch add a function to interpret the COMDAT data and set "merge" attribute to the atoms accordingly. LLD supports multiple policies to merge atoms; atoms can be merged by name or by content. COFF supports them, and in addition to that, it supports choose-the-largest-atom policy, which LLD currently does not support. I simply mapped it to merge-by-name attribute for now, but we eventually have to support that policy in the core linker. llvm-svn: 188025
44 lines
1.5 KiB
YAML
44 lines
1.5 KiB
YAML
---
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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_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
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Alignment: 16
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SectionData: 558BEC33C05DC3
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- Name: .text
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Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
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Alignment: 16
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SectionData: 558BEC33C05DC3
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symbols:
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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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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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NumberOfAuxSymbols: 1
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AuxiliaryData: 0700000000000000C979F796000002000000
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SimpleType: IMAGE_SYM_TYPE_NULL
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SimpleType: IMAGE_SYM_TYPE_NULL
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...
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