[Mips] Support R_MIPS_HIGHER / R_MIPS_HIGHEST relocations handling

llvm-svn: 240259

1 files changed, 14 insertions, 0 deletions

diff --git a/lld/lib/ReaderWriter/ELF/Mips/MipsRelocationHandler.cpp b/lld/lib/ReaderWriter/ELF/Mips/MipsRelocationHandler.cpp
index e7a57e63e59..42fdc7726b7 100644
--- a/lld/lib/ReaderWriter/ELF/Mips/MipsRelocationHandler.cpp
+++ b/lld/lib/ReaderWriter/ELF/Mips/MipsRelocationHandler.cpp
@@ -100,6 +100,8 @@ static MipsRelocationParams getRelocationParams(uint32_t rType) {
   case R_MIPS_HI16:
     return {4, 0xffff, 0, false, gpDispCheck<16>};
   case R_MIPS_LO16:
+  case R_MIPS_HIGHER:
+  case R_MIPS_HIGHEST:
     return {4, 0xffff, 0, false, dummyCheck};
   case R_MIPS_16:
   case R_MIPS_PCHI16:
@@ -195,6 +197,14 @@ static int64_t getHi16(int64_t value) {
   return ((value + 0x8000) >> 16) & 0xffff;
 }
 
+static int64_t getHigher16(int64_t value) {
+  return ((value + 0x80008000ull) >> 32) & 0xffff;
+}
+
+static int64_t getHighest16(int64_t value) {
+  return ((value + 0x800080008000ull) >> 48) & 0xffff;
+}
+
 static int64_t maskLow16(int64_t value) {
   return (value + 0x8000) & ~0xffff;
 }
@@ -382,6 +392,10 @@ static ErrorOr<int64_t> calculateRelocation(Reference::KindValue kind,
   case R_MICROMIPS_GOT_HI16:
   case R_MICROMIPS_CALL_HI16:
     return getHi16(tgtAddr - gpAddr);
+  case R_MIPS_HIGHER:
+    return getHigher16(tgtAddr + addend);
+  case R_MIPS_HIGHEST:
+    return getHighest16(tgtAddr + addend);
   case R_MIPS_EH:
   case R_MIPS_GOT16:
   case R_MIPS_CALL16: