[mips][microMIPS] MicroMIPS 16-bit unconditional branch instruction B

[oota-llvm.git] / lib / Target / Mips / Disassembler / MipsDisassembler.cpp

diff --git a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
index da33f3b913cddb9d192ba40ba9f399435c12811a..37168bce7070717e89e16c6525aed06c42bc8c4c 100644 (file)
--- a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
+++ b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
@@ -235,6 +235,13 @@ static DecodeStatus DecodeBranchTarget7MM(MCInst &Inst,
                                           uint64_t Address,
                                           const void *Decoder);
 
+// DecodeBranchTarget10MM - Decode microMIPS branch offset, which is
+// shifted left by 1 bit.
+static DecodeStatus DecodeBranchTarget10MM(MCInst &Inst,
+                                           unsigned Offset,
+                                           uint64_t Address,
+                                           const void *Decoder);
+
 // DecodeBranchTargetMM - Decode microMIPS branch offset, which is
 // shifted left by 1 bit.
 static DecodeStatus DecodeBranchTargetMM(MCInst &Inst,
@@ -1556,6 +1563,15 @@ static DecodeStatus DecodeBranchTarget7MM(MCInst &Inst,
   return MCDisassembler::Success;
 }
 
+static DecodeStatus DecodeBranchTarget10MM(MCInst &Inst,
+                                           unsigned Offset,
+                                           uint64_t Address,
+                                           const void *Decoder) {
+  int32_t BranchOffset = SignExtend32<10>(Offset) << 1;
+  Inst.addOperand(MCOperand::CreateImm(BranchOffset));
+  return MCDisassembler::Success;
+}
+
 static DecodeStatus DecodeBranchTargetMM(MCInst &Inst,
                                          unsigned Offset,
                                          uint64_t Address,