[mips] Implement generation of relocations "chains" used by N32 ABI
In case of using a "nested" relocation expressions like this
`%hi(%neg(%gp_rel()))`, N32 ABI requires generation of three consecutive
relocations. That differs from the N64 ABI case where all relocations
are packed into the single relocation record.
llvm-svn: 313879
diff --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp
index b37a950..eef2757 100644
--- a/llvm/lib/MC/ELFObjectWriter.cpp
+++ b/llvm/lib/MC/ELFObjectWriter.cpp
@@ -1131,6 +1131,23 @@
if (hasRelocationAddend())
write(uint32_t(Entry.Addend));
+
+ if (TargetObjectWriter->getEMachine() == ELF::EM_MIPS) {
+ if (uint32_t RType = TargetObjectWriter->getRType2(Entry.Type)) {
+ write(uint32_t(Entry.Offset));
+
+ ERE32.setSymbolAndType(0, RType);
+ write(ERE32.r_info);
+ write(uint32_t(0));
+ }
+ if (uint32_t RType = TargetObjectWriter->getRType3(Entry.Type)) {
+ write(uint32_t(Entry.Offset));
+
+ ERE32.setSymbolAndType(0, RType);
+ write(ERE32.r_info);
+ write(uint32_t(0));
+ }
+ }
}
}
}