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
53 lines
1.2 KiB
YAML
53 lines
1.2 KiB
YAML
## Test the p_align field of a program header can be set explicitly or inferred
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## from the maximum alignment of contained sections.
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## Explicit Align has priority over section alignments.
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# RUN: yaml2obj --docnum=1 %s -o %t
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# RUN: llvm-readobj -l %t | FileCheck %s
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# CHECK: ProgramHeader {
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# CHECK-NOT: ProgramHeader {
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# CHECK: Alignment: 16
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# CHECK-NEXT: }
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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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Sections:
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- Name: .tdata
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Type: SHT_PROGBITS
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AddressAlign: 4
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- Name: .tbss
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Type: SHT_NOBITS
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AddressAlign: 64
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ProgramHeaders:
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- Type: PT_TLS
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Align: 16
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FirstSec: .tdata
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LastSec: .tbss
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## If Align is not specified, p_align is inferred from the maximum alignment
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## of contained sections.
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# RUN: yaml2obj --docnum=2 %s -o %t
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# RUN: llvm-readobj -l %t | FileCheck %s
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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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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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AddressAlign: 4
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- Name: .text.hot
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Type: SHT_PROGBITS
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AddressAlign: 16
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ProgramHeaders:
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- Type: PT_LOAD
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FirstSec: .text
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LastSec: .text.hot
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