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eb0c9094ac
The patch implements support for both relocation record formats: Elf_Rel
and Elf_Rela. It is possible to define relocation against symbol only.
Relocations against sections will be implemented later. Now yaml2obj
recognizes X86_64, MIPS and Hexagon relocation types.
Example of relocation section specification:
Sections:
- Name: .text
Type: SHT_PROGBITS
Content: "0000000000000000"
AddressAlign: 16
Flags: [SHF_ALLOC]
- Name: .rel.text
Type: SHT_REL
Info: .text
AddressAlign: 4
Relocations:
- Offset: 0x1
Symbol: glob1
Type: R_MIPS_32
- Offset: 0x2
Symbol: glob2
Type: R_MIPS_CALL16
The patch reviewed by Michael Spencer, Sean Silva, Shankar Easwaran.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206017 91177308-0d34-0410-b5e6-96231b3b80d8
119 lines
2.7 KiB
YAML
119 lines
2.7 KiB
YAML
# RUN: yaml2obj -format=elf %s | llvm-readobj -sections -relocations - | FileCheck %s
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!ELF
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FileHeader: !FileHeader
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Class: ELFCLASS32
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Data: ELFDATA2MSB
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Type: ET_REL
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Machine: EM_MIPS
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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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Content: "0000000000000000"
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AddressAlign: 16
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Flags: [SHF_ALLOC]
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- Name: .rel.text
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Type: SHT_REL
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Info: .text
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AddressAlign: 4
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Relocations:
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- Offset: 0x1
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Symbol: glob1
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Type: R_MIPS_32
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- Offset: 0x1
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Symbol: glob2
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Type: R_MIPS_CALL16
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- Offset: 0x2
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Symbol: loc1
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Type: R_MIPS_LO16
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- Name: .rela.text
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Type: SHT_RELA
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Link: .symtab
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Info: .text
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AddressAlign: 4
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Relocations:
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- Offset: 0x1
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Addend: 1
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Symbol: glob1
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Type: R_MIPS_32
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- Offset: 0x1
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Addend: 2
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Symbol: glob2
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Type: R_MIPS_CALL16
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- Offset: 0x2
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Addend: 3
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Symbol: loc1
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Type: R_MIPS_LO16
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Symbols:
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Local:
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- Name: loc1
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- Name: loc2
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Global:
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- Name: glob1
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Section: .text
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Value: 0x0
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Size: 4
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- Name: glob2
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Weak:
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- Name: weak1
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# CHECK: Section {
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# CHECK-NEXT: Index: 0
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# CHECK: }
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# CHECK: Section {
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# CHECK-NEXT: Index: 1
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# CHECK-NEXT: Name: .text (1)
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# CHECK: }
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# CHECK-NEXT: Section {
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# CHECK-NEXT: Index: 2
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# CHECK-NEXT: Name: .rel.text (7)
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# CHECK-NEXT: Type: SHT_REL (0x9)
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x160
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# CHECK-NEXT: Size: 24
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# CHECK-NEXT: Link: 4
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# CHECK-NEXT: Info: 1
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# CHECK-NEXT: AddressAlignment: 4
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# CHECK-NEXT: EntrySize: 8
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# CHECK-NEXT: }
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# CHECK-NEXT: Section {
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# CHECK-NEXT: Index: 3
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# CHECK-NEXT: Name: .rela.text (17)
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# CHECK-NEXT: Type: SHT_RELA (0x4)
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# CHECK-NEXT: Flags [ (0x0)
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# CHECK-NEXT: ]
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# CHECK-NEXT: Address: 0x0
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# CHECK-NEXT: Offset: 0x180
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# CHECK-NEXT: Size: 36
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# CHECK-NEXT: Link: 4
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# CHECK-NEXT: Info: 1
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# CHECK-NEXT: AddressAlignment: 4
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# CHECK-NEXT: EntrySize: 12
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# CHECK-NEXT: }
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# CHECK-NEXT: Section {
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# CHECK-NEXT: Index: 4
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# CHECK-NEXT: Name: .symtab (28)
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# CHECK: }
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# CHECK-NEXT: Section {
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# CHECK-NEXT: Index: 5
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# CHECK-NEXT: Name: .strtab (36)
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# CHECK: }
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# CHECK: Relocations [
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# CHECK-NEXT: Section (2) .rel.text {
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# CHECK-NEXT: 0x1 R_MIPS_32 glob1 0x0
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# CHECK-NEXT: 0x1 R_MIPS_CALL16 glob2 0x0
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# CHECK-NEXT: 0x2 R_MIPS_LO16 loc1 0x0
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# CHECK-NEXT: }
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# CHECK-NEXT: Section (3) .rela.text {
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# CHECK-NEXT: 0x1 R_MIPS_32 glob1 0x1
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# CHECK-NEXT: 0x1 R_MIPS_CALL16 glob2 0x2
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# CHECK-NEXT: 0x2 R_MIPS_LO16 loc1 0x3
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# CHECK-NEXT: }
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# CHECK-NEXT: ]
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