[ELF][MIPS] R_MIPS_GOT_DISP, R_MIPS_GOT_PAGE, R_MIPS_GOT_OFST relocations support
These relocations introduced by MIPS N64 ABI. R_MIPS_GOT_DISP references
GOT entry with full symbol's address, R_MIPS_GOT_PAGE creates GOT entry
with address of memory page which includes symbol's address,
R_MIPS_GOT_OFST used together with R_MIPS_GOT_PAGE. This relocation
calculates offset from beginning of memory page to the symbol address.
llvm-svn: 268525
diff --git a/lld/ELF/Target.cpp b/lld/ELF/Target.cpp
index ccc0efa..df41fcd 100644
--- a/lld/ELF/Target.cpp
+++ b/lld/ELF/Target.cpp
@@ -1252,6 +1252,7 @@
return R_PLT;
case R_MIPS_HI16:
case R_MIPS_LO16:
+ case R_MIPS_GOT_OFST:
// MIPS _gp_disp designates offset between start of function and 'gp'
// pointer into GOT. __gnu_local_gp is equal to the current value of
// the 'gp'. Therefore any relocations against them do not require
@@ -1268,12 +1269,16 @@
case R_MIPS_PCLO16:
return R_PC;
case R_MIPS_GOT16:
- case R_MIPS_CALL16:
if (S.isLocal())
return R_MIPS_GOT_LOCAL;
+ // fallthrough
+ case R_MIPS_CALL16:
+ case R_MIPS_GOT_DISP:
if (!S.isPreemptible())
return R_MIPS_GOT;
return R_GOT_OFF;
+ case R_MIPS_GOT_PAGE:
+ return R_MIPS_GOT_LOCAL;
}
}
@@ -1451,10 +1456,13 @@
write32<E>(Loc, (Instr & ~0x3ffffff) | (Val >> 2));
break;
}
+ case R_MIPS_GOT_DISP:
+ case R_MIPS_GOT_PAGE:
case R_MIPS_GOT16:
checkInt<16>(Val, Type);
// fallthrough
case R_MIPS_CALL16:
+ case R_MIPS_GOT_OFST:
writeMipsLo16<E>(Loc, Val);
break;
case R_MIPS_GPREL16: {
@@ -1515,7 +1523,7 @@
template <class ELFT>
bool MipsTargetInfo<ELFT>::usesOnlyLowPageBits(uint32_t Type) const {
- return Type == R_MIPS_LO16;
+ return Type == R_MIPS_LO16 || Type == R_MIPS_GOT_OFST;
}
}
}