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
69 lines
1.9 KiB
Plaintext
69 lines
1.9 KiB
Plaintext
# RUN: yaml2obj %s -o %t
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# RUN: llvm-objcopy %t %t2
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# RUN: llvm-readobj --program-headers %t2 | 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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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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Address: 0x1000
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AddressAlign: 0x1000
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Size: 0x1000
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- Name: .text2
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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Address: 0x2000
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AddressAlign: 0x1000
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Size: 0x1000
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- Name: .text3
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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Address: 0x3000
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AddressAlign: 0x1000
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Size: 0x1000
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ProgramHeaders:
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- Type: PT_LOAD
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Flags: [ PF_R ]
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VAddr: 0x1000
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FirstSec: .text
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LastSec: .text
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- Type: PT_LOAD
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Flags: [ PF_X, PF_R ]
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VAddr: 0x3000
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FirstSec: .text3
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LastSec: .text3
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# CHECK: ProgramHeaders [
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# CHECK-NEXT: ProgramHeader {
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# CHECK-NEXT: Type: PT_LOAD (0x1)
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# CHECK-NEXT: Offset: 0x1000
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# CHECK-NEXT: VirtualAddress: 0x1000
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# CHECK-NEXT: PhysicalAddress: 0x1000
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# CHECK-NEXT: FileSize: 4096
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# CHECK-NEXT: MemSize: 4096
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# CHECK-NEXT: Flags [ (0x4)
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# CHECK-NEXT: PF_R (0x4)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Alignment: 4096
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# CHECK-NEXT: }
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# CHECK-NEXT: ProgramHeader {
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# CHECK-NEXT: Type: PT_LOAD (0x1)
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# CHECK-NEXT: Offset: 0x2000
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# CHECK-NEXT: VirtualAddress: 0x3000
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# CHECK-NEXT: PhysicalAddress: 0x3000
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# CHECK-NEXT: FileSize: 4096
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# CHECK-NEXT: MemSize: 4096
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# CHECK-NEXT: Flags [ (0x5)
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# CHECK-NEXT: PF_R (0x4)
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# CHECK-NEXT: PF_X (0x1)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Alignment: 4096
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# CHECK-NEXT: }
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# CHECK-NEXT:]
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