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
return read64(buf + 8);
case R_AARCH64_NONE:
return 0;
+ case R_AARCH64_PREL32:
+ return SignExtend64<32>(read32(buf));
+ case R_AARCH64_ABS64:
+ case R_AARCH64_PREL64:
+ return read64(buf);
default:
internalLinkerError(getErrorLocation(buf),
"cannot read addend for relocation " + toString(type));
switch (type) {
case R_PPC_NONE:
return 0;
+ case R_PPC_ADDR32:
+ case R_PPC_REL32:
+ return SignExtend64<32>(read32(buf));
default:
internalLinkerError(getErrorLocation(buf),
"cannot read addend for relocation " + toString(type));
switch (type) {
case R_PPC64_NONE:
return 0;
+ case R_PPC64_REL32:
+ return SignExtend64<32>(read32(buf));
+ case R_PPC64_ADDR64:
+ case R_PPC64_REL64:
+ return read64(buf);
default:
internalLinkerError(getErrorLocation(buf),
"cannot read addend for relocation " + toString(type));
--- /dev/null
+## 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
+...