Files
clang-p2996/lld/test/ELF/relocation-rel-format.test
Fangrui Song 767e64fc11 [ELF] Support some absolute/PC-relative relocation types for REL format
ctfconvert seems to use REL-format `.rel.SUNW_dof` for 32-bit architectures.
```
Binary file usr/ports/lang/perl5.32/work/perl-5.32.1/dtrace_mini.o matches
[alfredo.junior@dell-a ~/tmp/llvm-bug]$ readelf -r dtrace_mini.o

Relocation section (.rel.SUNW_dof):
r_offset r_info   r_type              st_value st_name
00000184 0000281a R_PPC_REL32         00000000 $dtrace1772974259.Perl_dtrace_probe_load
```

Support R_PPC_REL32 to fix `ld.lld: error: drti.c:(.SUNW_dof+0x4E4): internal linker error: cannot read addend for relocation R_PPC_REL32`.
While here, add some common relocation types for AArch64, PPC, and PPC64.
We perform minimum tests.

Reviewed By: adalava, arichardson

Differential Revision: https://reviews.llvm.org/D120535
2022-02-25 19:25:18 +00:00

43 lines
1.1 KiB
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## Test some relocation types for REL format.
# RUN: yaml2obj -DMACHINE=AARCH64 -DR0=R_AARCH64_ABS64 -DR1=R_AARCH64_PREL32 -DR2=R_AARCH64_PREL64 %s -o %t.o
# RUN: ld.lld %t.o -o /dev/null
# RUN: yaml2obj -DMACHINE=PPC -DBITS=32 -DR0=R_PPC_ADDR32 -DR1=R_PPC_REL32 %s -o %t.o
# RUN: ld.lld %t.o -o /dev/null
# RUN: yaml2obj -DMACHINE=PPC64 -DR0=R_PPC64_ADDR64 -DR1=R_PPC64_REL32 -DR2=R_PPC64_REL64 %s -o %t.o
# RUN: ld.lld %t.o -o /dev/null
--- !ELF
FileHeader:
Class: ELFCLASS[[BITS=64]]
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_[[MACHINE]]
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Size: 24
- Name: .data
Type: SHT_PROGBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
- Name: .rel.text
Type: SHT_REL
Info: .text
Relocations:
- Symbol: .data
Type: [[R0]]
- Offset: 8
Symbol: .data
Type: [[R1=0]]
- Offset: 16
Symbol: .data
Type: [[R2=0]]
Symbols:
- Name: .data
Type: STT_SECTION
Section: .data
- Name: _start
Section: .text
Binding: STB_GLOBAL
...