llvm-for-llvmta/test/tools/llvm-objcopy/ELF/dynrelocsec-remove-shlink-r...

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2022-04-25 10:02:23 +02:00
# RUN: yaml2obj %s -o %t
## Check we cannot remove the .dynsym symbol table because dynamic
## relocation section .rela.dyn still references it via sh_link field.
# RUN: not llvm-objcopy -R .dynsym %t %t2 2>&1 >/dev/null | FileCheck %s --check-prefix=ERR -DINPUT=%t
# ERR: error: '[[INPUT]]': symbol table '.dynsym' cannot be removed because it is referenced by the relocation section '.rela.dyn'
## Check we can remove .dynsym after removing the reference.
# RUN: llvm-objcopy -R .dynsym -R .rela.dyn %t %t2
# RUN: llvm-readelf --sections %t2 | FileCheck %s --implicit-check-not=".dynsym"
## Check we zero out sh_link field and allow producing output with the --allow-broken-links switch.
# RUN: llvm-objcopy -R .dynsym --allow-broken-links %t %t2
# RUN: llvm-readelf --sections %t2 | FileCheck %s --check-prefix=DROP-LINK
# DROP-LINK: [Nr] Name Type Address Off Size ES Flg L
# DROP-LINK: [ 1] .rela.dyn RELA 0000000000000270 000040 000000 18 A 0
# DROP-LINK-NOT: .dynsym
!ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .rela.dyn
Type: SHT_RELA
Flags: [ SHF_ALLOC ]
Address: 0x0000000000000270
Link: .dynsym
EntSize: 0x0000000000000018
DynamicSymbols:
- Name: bar
Binding: STB_GLOBAL