677423997d
1) `-x foo` currently dumps one `foo`. This change makes it dump all `foo`. 2) `-x foo -x foo` currently dumps `foo` twice. This change makes it dump `foo` once. In addition, if foo has section index 9, `-x foo -x 9` dumps `foo` once. 3) Give a warning instead of an error if `foo` does not exist. The new behaviors match GNU readelf. Also, print a new line as a separator between two section dumps. GNU readelf uses two lines, but one seems good enough. Reviewed By: grimar, jhenderson Differential Revision: https://reviews.llvm.org/D63475 llvm-svn: 363683
58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
## This test shows that llvm-objcopy does not baulk at overlapping sections.
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## These don't really make sense, but the tool should still handle invalid
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## inputs somehow.
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# RUN: yaml2obj %s -o %t.o
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## First, check that the section header table appears immediately after the ELF
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## header.
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# RUN: llvm-readobj --file-headers %t.o | FileCheck %s --check-prefix=SHDRS-OFFSET
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# SHDRS-OFFSET: SectionHeaderOffset: 0x40{{$}}
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## Binary edit the section header sh_offset field of the second section to
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## overlap the first one.
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# RUN: %python -c "with open('%/t.o', 'r+b') as input: import struct; bytes = struct.pack('<Q', 0x1001); input.seek(216); input.write(bytes)"
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## Sanity check that the binary editing modified the correct field.
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# RUN: llvm-readobj --section-headers %t.o | FileCheck %s --check-prefix=VALIDATE
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# VALIDATE: Name: .first
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# VALIDATE: Offset: 0x1000
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# VALIDATE: Name: .second
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# VALIDATE: Offset: 0x1001
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## Check that the contents are as expected before the copy.
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# RUN: llvm-readobj -x .first -x .second %t.o | FileCheck %s --check-prefix=CONTENTS
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## Now check that the section contents are still correct after the copy.
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## Also characterize the behavior of llvm-objcopy in that it "unoverlaps" the
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## two sections.
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# RUN: llvm-objcopy %t.o %t2.o
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# RUN: llvm-readobj --section-headers %t2.o | FileCheck %s
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# RUN: llvm-readobj -x .first -x .second %t2.o | FileCheck %s --check-prefix=CONTENTS
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# CHECK: Name: .first
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# CHECK: Offset: 0x1000
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# CHECK: Name: .second
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# CHECK: Offset: 0x1004
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# CONTENTS: Hex dump of section '.first':
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# CONTENTS-NEXT: 0x00000000 01234567
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# CONTENTS-EMPTY:
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# CONTENTS-NEXT: Hex dump of section '.second':
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# CONTENTS-NEXT: 0x00000000 23456789
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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_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .first
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Type: SHT_PROGBITS
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Content: '01234567'
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AddressAlign: 0x1000
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- Name: .second
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Type: SHT_PROGBITS
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Content: '89abcdef'
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