a7a447be0f
Imagine we have a YAML declaration of few sections: `foo1`, `<unnamed 2>`, `foo3`, `foo4`. To put them into segment we can do (1*): ``` Sections: - Section: foo1 - Section: foo4 ``` or we can use (2*): ``` Sections: - Section: foo1 - Section: foo3 - Section: foo4 ``` or (3*) : ``` Sections: - Section: foo1 ## "(index 2)" here is a name that we automatically created for a unnamed section. - Section: (index 2) - Section: foo3 - Section: foo4 ``` It looks really confusing that we don't have to list all of sections. At first I've tried to make this rule stricter and report an error when there is a gap (i.e. when a section is included into segment, but not listed explicitly). This did not work perfect, because such approach conflicts with unnamed sections/fills (see (3*)). This patch drops "Sections" key and introduces 2 keys instead: `FirstSec` and `LastSec`. Both are optional. Differential revision: https://reviews.llvm.org/D90458
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
# Show that --remove-section removes sections in segments.
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# RUN: yaml2obj %s -o %t
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# Validate the offsets for the later parts of the test.
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# RUN: llvm-objcopy %t %t.copy
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# Skip to the start of the sections, which should be immediately after the
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# program header table (i.e. sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr) == 120).
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# RUN: od -t x1 -N 16 -j 120 %t.copy | FileCheck %s --check-prefix=COPY
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# COPY: 11 22 33 44 55 66 77 88
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# RUN: llvm-objcopy --remove-section non_alloc %t %t.nonalloc
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# RUN: llvm-readelf --sections %t.nonalloc | FileCheck %s --check-prefix=NONALLOC-SHDRS
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# RUN: od -t x1 -N 16 -j 120 %t.nonalloc | FileCheck %s --check-prefix=NONALLOC-BYTES
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# NONALLOC-SHDRS-NOT: non_alloc
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# NONALLOC-BYTES: 11 22 33 44 00 00 00 00
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# RUN: llvm-objcopy --remove-section shf_alloc %t %t.alloc
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# RUN: llvm-readelf --sections %t.alloc | FileCheck %s --check-prefix=ALLOC-SHDRS
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# RUN: od -t x1 -N 16 -j 120 %t.alloc | FileCheck %s --check-prefix=ALLOC-BYTES
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# ALLOC-SHDRS-NOT: shf_alloc
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# ALLOC-BYTES: 00 00 00 00 55 66 77 88
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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: shf_alloc
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Type: SHT_PROGBITS
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Flags: [SHF_ALLOC]
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Content: '11223344'
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- Name: non_alloc
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Type: SHT_PROGBITS
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Flags: []
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Content: '55667788'
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ProgramHeaders:
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# Use an arbitrary segment type to show that the segment type is unimportant.
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- Type: 0x61234567
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FirstSec: shf_alloc
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LastSec: non_alloc
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