MIPS: Fix disassembler for J and JAL instructions.

src/mips64/disasm-mips64.cc

Index: src/mips64/disasm-mips64.cc
diff --git a/src/mips64/disasm-mips64.cc b/src/mips64/disasm-mips64.cc
index 0723190871959b507fff262f81c63f36a93ac270..a723bdc7702bc7f088e4f45c3c393cd2b9ef197e 100644
--- a/src/mips64/disasm-mips64.cc
+++ b/src/mips64/disasm-mips64.cc
@@ -344,8 +344,10 @@ void Decoder::PrintPCImm21(Instruction* instr, int delta_pc, int n_bits) {
 
 // Print 26-bit hex immediate value.
 void Decoder::PrintXImm26(Instruction* instr) {
-  uint32_t imm = static_cast<uint32_t>(instr->Imm26Value()) << kImmFieldShift;
-  out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "0x%x", imm);
+  uint64_t target = static_cast<uint64_t>(instr->Imm26Value())
+                    << kImmFieldShift;
+  target = (reinterpret_cast<uint64_t>(instr) & ~0xfffffff) | target;
+  out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "0x%lx", target);
 }