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7e2d822599
This diff adds support for SHT_GROUP sections to llvm-objcopy. Some sections are interrelated and comprise a group. For example, a definition of an inline function might require, in addition to the section containing its instructions, a read-only data section containing literals referenced inside the function. A section of the type SHT_GROUP contains the indices of the group members, therefore, it needs to be updated whenever the indices change. Similarly, the fields sh_link, sh_info should be recalculated as well. [Resubmit r328012 with the proper handling of endianness] Test plan: make check-all Differential revision: https://reviews.llvm.org/D43996 llvm-svn: 328143
57 lines
1.8 KiB
Plaintext
57 lines
1.8 KiB
Plaintext
# RUN: yaml2obj %s > %t
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# RUN: llvm-objcopy -remove-section=.text.bar %t %t2
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# RUN: llvm-readobj -elf-section-groups %t2 | FileCheck %s
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# In this test the section .text.bar is getting removed, as a result,
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# the indices of the sections which go after .text.bar will change,
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# thus the fields Link, Info and the content of .group should be updated.
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# CHECK: Name: .group
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# CHECK-NEXT: Index: 1
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# CHECK-NEXT: Link: 3
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# CHECK-NEXT: Info: 2
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# CHECK-NEXT: Type: COMDAT (0x1)
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# CHECK-NEXT: Signature: foo
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# CHECK: .text.foo (2)
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_X86_64
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Sections:
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- Name: .group
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Type: SHT_GROUP
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Link: .symtab
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AddressAlign: 0x0000000000000004
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Info: foo
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Members:
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- SectionOrType: GRP_COMDAT
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- SectionOrType: .text.foo
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- Name: .text.bar
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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AddressAlign: 0x0000000000000010
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- Name: .text.foo
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR, SHF_GROUP ]
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AddressAlign: 0x0000000000000010
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Symbols:
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Local:
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- Name: .text.bar
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Type: STT_SECTION
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Section: .text.bar
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- Name: .text.foo
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Type: STT_SECTION
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Section: .text.foo
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Weak:
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- Name: bar
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Type: STT_FUNC
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Section: .text.bar
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Size: 0x0000000000000000
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- Name: foo
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Type: STT_FUNC
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Section: .text.foo
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Size: 0x0000000000000000
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