derek.holloway
7502bf64a4
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70 lines
2.3 KiB
Plaintext
70 lines
2.3 KiB
Plaintext
# RUN: yaml2obj %s -o %t
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# RUN: llvm-objcopy %t %t2
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# RUN: llvm-readobj --dyn-syms %t2 | FileCheck %s
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## This checks that section references in the dynamic symbol table are not
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## corrupted after processing a file where the sequence of section headers does
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## not follow the order of their offsets. The tool avoids updating loadable
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## sections, so, the content of the dynamic symbol table stays intact and the
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## used section indices are preserved. In this test, the section 'dummy' comes
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## first while having the offset after all other sections. If the section
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## headers were sorted by their offsets by the tool, what it did before, the
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## index of the '.text' section would change from '2' to '1', which resulted
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## in an incorrect reference in the corresponding dynamic symbol 'foo'.
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# CHECK: Name: foo
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# CHECK-NEXT: Value:
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# CHECK-NEXT: Size:
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# CHECK-NEXT: Binding:
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# CHECK-NEXT: Type:
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# CHECK-NEXT: Other:
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# CHECK-NEXT: Section: .text
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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_DYN
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Machine: EM_X86_64
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ProgramHeaders:
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- Type: PT_LOAD
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Flags: [ PF_X, PF_R ]
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FirstSec: .text
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LastSec: .text
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Align: 0x1000
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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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AddressAlign: 0x4
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Offset: 0x1000
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Content: 0000000000000000
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- Name: .dynsym
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Type: SHT_DYNSYM
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Flags: [ SHF_ALLOC ]
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Link: .dynstr
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- Name: .dynstr
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Type: SHT_STRTAB
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Flags: [ SHF_ALLOC ]
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- Name: dummy
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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Offset: 0x1100
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- Type: SectionHeaderTable
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Sections:
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## 'dummy' comes before '.text' in the section header table despite its offset
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## is larger.
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- Name: dummy
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- Name: .text
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- Name: .dynsym
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- Name: .dynstr
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- Name: .shstrtab
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- Name: .strtab
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DynamicSymbols:
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- Name: foo
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Type: STT_FUNC
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Section: .text
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Binding: STB_GLOBAL
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Value: 0x0
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Size: 0x8
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