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
52 lines
1.5 KiB
Plaintext
52 lines
1.5 KiB
Plaintext
# RUN: yaml2obj %s -o %t
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# RUN: llvm-objcopy -O binary -j .text %t %t2
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# RUN: llvm-objcopy -O binary --only-section .text %t %t3
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# RUN: llvm-objcopy --dump-section .text=%t4 %t %t5
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# RUN: llvm-objcopy --dump-section .foo=%t6 %t %t7
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# RUN: not llvm-objcopy --dump-section .bar=%t8 %t %t9 2>&1 | FileCheck %s --check-prefix=NOBITS -DINPUT=%t
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# RUN: llvm-objcopy --dump-section .empty=%t.empty %t /dev/null
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# RUN: od -t x1 %t2 | FileCheck %s --ignore-case
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# RUN: od -t x1 %t6 | FileCheck %s --ignore-case --check-prefix=NON-ALLOC
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# RUN: wc -c %t2 | FileCheck %s --check-prefix=SIZE
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# RUN: wc -c %t.empty | FileCheck %s --check-prefix=EMPTY
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# RUN: diff %t2 %t3
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# RUN: diff %t4 %t3
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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: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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AddressAlign: 0x0000000000001000
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Content: "DEADBEEF"
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- Name: .foo
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Type: SHT_PROGBITS
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Flags: [ SHF_WRITE ]
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Content: "CAFE"
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- Name: .empty
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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- Name: .bar
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Type: SHT_NOBITS
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Flags: [ SHF_WRITE ]
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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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# CHECK: 0000000 de ad be ef
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# NON-ALLOC: 0000000 ca fe
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# SIZE: 4
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# NOBITS: error: '[[INPUT]]': cannot dump section '.bar': it has no contents
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# EMPTY: 0
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