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llvm-mirror/test/tools/llvm-readobj/elf-packed-relocs.test
Peter Collingbourne 251c0e9aa5 llvm-readobj: Add support for reading relocations in the Android packed format.
This is in preparation for testing lld's upcoming relocation packing
feature (D39152). I have verified that this implementation correctly
unpacks the relocations from a Chromium DSO built with gold and the
Android relocation packer for ARM32 and ARM64.

Differential Revision: https://reviews.llvm.org/D39272

llvm-svn: 316543
2017-10-25 03:37:12 +00:00

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# The binary blobs in this file were created like this:
# llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu Inputs/elf-packed-relocs1.s -o - | obj2yaml | grep Content:
# RUN: yaml2obj -docnum 1 %s | llvm-readobj -elf-output-style=LLVM -relocations - | FileCheck --check-prefix=LLVM1 %s
# LLVM1: Section (1) .rela.dyn {
# LLVM1-NEXT: 0x1100 R_X86_64_RELATIVE - 0x0
# LLVM1-NEXT: 0x1180 R_X86_64_RELATIVE - 0x0
# LLVM1-NEXT: 0x1188 R_X86_64_64 sym1 0x0
# LLVM1-NEXT: 0x1190 R_X86_64_64 sym2 0x0
# LLVM1-NEXT: 0x1191 R_X86_64_64 sym1 0x8
# LLVM1-NEXT: 0x1193 R_X86_64_64 sym2 0xC
# LLVM1-NEXT: 0x1197 R_X86_64_64 sym1 0xA
# LLVM1-NEXT: 0x119F R_X86_64_64 sym2 0xA
# LLVM1-NEXT: }
# RUN: yaml2obj -docnum 1 %s | llvm-readobj -elf-output-style=GNU -relocations - | FileCheck --check-prefix=GNU1 %s
# GNU1: 0000000000001100 0000000000000008 R_X86_64_RELATIVE 0
# GNU1-NEXT: 0000000000001180 0000000000000008 R_X86_64_RELATIVE 0
# GNU1-NEXT: 0000000000001188 0000000100000001 R_X86_64_64 0000000000000000 sym1 + 0
# GNU1-NEXT: 0000000000001190 0000000200000001 R_X86_64_64 0000000000000000 sym2 + 0
# GNU1-NEXT: 0000000000001191 0000000100000001 R_X86_64_64 0000000000000000 sym1 + 8
# GNU1-NEXT: 0000000000001193 0000000200000001 R_X86_64_64 0000000000000000 sym2 + c
# GNU1-NEXT: 0000000000001197 0000000100000001 R_X86_64_64 0000000000000000 sym1 + a
# GNU1-NEXT: 000000000000119f 0000000200000001 R_X86_64_64 0000000000000000 sym2 + a
# elf-packed-relocs1.s
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Entry: 0x0000000000001000
Sections:
- Name: .rela.dyn
Type: SHT_ANDROID_RELA
Flags: [ SHF_ALLOC ]
Address: 0x00000000000001C8
Link: .symtab
AddressAlign: 0x0000000000000001
Content: 41505332088020020108800280010202088180808010818080802002080181808080100802818080802004020C7E048180808010088180808020
Symbols:
Global:
- Name: sym1
- Name: sym2
...
# RUN: yaml2obj -docnum 2 %s | llvm-readobj -elf-output-style=LLVM -relocations - | FileCheck --check-prefix=LLVM2 %s
# LLVM2: Section (1) .rel.dyn {
# LLVM2-NEXT: 0x1008 R_386_32 sym1 0x0
# LLVM2-NEXT: 0x1010 R_386_GOT32 sym2 0x0
# LLVM2-NEXT: 0x100C R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0x1008 R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0x1004 R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0x1000 R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0xFFC R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0xFF8 R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0xFF4 R_386_RELATIVE - 0x0
# LLVM2-NEXT: 0xFF0 R_386_RELATIVE - 0x0
# LLVM2-NEXT: }
# RUN: yaml2obj -docnum 2 %s | llvm-readobj -elf-output-style=GNU -relocations - | FileCheck --check-prefix=GNU2 %s
# GNU2: 00001008 00000101 R_386_32 00000000 sym1
# GNU2-NEXT: 00001010 00000203 R_386_GOT32 00000000 sym2
# GNU2-NEXT: 0000100c 00000008 R_386_RELATIVE
# GNU2-NEXT: 00001008 00000008 R_386_RELATIVE
# GNU2-NEXT: 00001004 00000008 R_386_RELATIVE
# GNU2-NEXT: 00001000 00000008 R_386_RELATIVE
# GNU2-NEXT: 00000ffc 00000008 R_386_RELATIVE
# GNU2-NEXT: 00000ff8 00000008 R_386_RELATIVE
# GNU2-NEXT: 00000ff4 00000008 R_386_RELATIVE
# GNU2-NEXT: 00000ff0 00000008 R_386_RELATIVE
# elf-packed-relocs2.s
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_386
Entry: 0x0000000000001000
Sections:
- Name: .rel.dyn
Type: SHT_ANDROID_REL
Flags: [ SHF_ALLOC ]
Address: 0x00000000000001C8
Link: .symtab
AddressAlign: 0x0000000000000001
Content: 415053320A80200202088102830408037C08
Symbols:
Global:
- Name: sym1
- Name: sym2
...