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
107 lines
2.8 KiB
Plaintext
107 lines
2.8 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: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_ARM
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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: 0x0000000000001000
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Content: "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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- Name: .data
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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Address: 0x2000
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AddressAlign: 0x0000000000001000
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Content: "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
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- Name: .xdata
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC ]
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- Name: .after
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Type: SHT_NOBITS
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Flags: [ SHF_ALLOC ]
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Size: 64
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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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VAddr: 0x1000
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Align: 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_R, PF_W ]
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VAddr: 0x2000
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Align: 0x1000
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FirstSec: .data
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LastSec: .data
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- Type: PT_GNU_STACK
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Flags: [ PF_R, PF_W ]
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VAddr: 0x0000
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Align: 0x0000
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- Type: PT_LOAD
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Flags: [ PF_R ]
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VAddr: 0x2010
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FirstSec: .xdata
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LastSec: .after
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#CHECK: ProgramHeaders [
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#CHECK-NEXT: ProgramHeader {
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#CHECK-NEXT: Type: PT_LOAD
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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: 16
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#CHECK-NEXT: MemSize: 16
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#CHECK-NEXT: Flags [
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#CHECK-NEXT: PF_R
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#CHECK-NEXT: PF_X
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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
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#CHECK-NEXT: Offset: 0x2000
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#CHECK-NEXT: VirtualAddress: 0x2000
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#CHECK-NEXT: PhysicalAddress: 0x2000
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#CHECK-NEXT: FileSize: 16
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#CHECK-NEXT: MemSize: 16
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#CHECK-NEXT: Flags [
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#CHECK-NEXT: PF_R
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#CHECK-NEXT: PF_W
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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_GNU_STACK
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#CHECK-NEXT: Offset: 0x0
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#CHECK-NEXT: VirtualAddress: 0x0
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#CHECK-NEXT: PhysicalAddress: 0x0
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#CHECK-NEXT: FileSize: 0
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#CHECK-NEXT: MemSize: 0
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#CHECK-NEXT: Flags [
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#CHECK-NEXT: PF_R
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#CHECK-NEXT: PF_W
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#CHECK-NEXT: ]
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#CHECK-NEXT: Alignment: 0
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#CHECK-NEXT: }
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#CHECK-NEXT: ProgramHeader {
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#CHECK-NEXT: Type: PT_LOAD
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#CHECK-NEXT: Offset: 0x2010
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#CHECK-NEXT: VirtualAddress: 0x2010
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#CHECK-NEXT: PhysicalAddress: 0x2010
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#CHECK-NEXT: FileSize: 0
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#CHECK-NEXT: MemSize: 64
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#CHECK-NEXT: Flags [
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#CHECK-NEXT: PF_R
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#CHECK-NEXT: ]
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#CHECK-NEXT: Alignment: 1
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#CHECK-NEXT: }
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#CHECK-NEXT:]
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