Merge "SIMD pavgb,w for x86/x86_64"

1 files changed, 16 insertions, 0 deletions

diff --git a/disassembler/disassembler_x86.cc b/disassembler/disassembler_x86.cc
index 77ed3c6a22..f5c3ad20cc 100644
--- a/disassembler/disassembler_x86.cc
+++ b/disassembler/disassembler_x86.cc
@@ -1101,6 +1101,22 @@ DISASSEMBLER_ENTRY(cmp,
           opcode1 = opcode_tmp.c_str();
         }
         break;
+      case 0xE0:
+      case 0xE3:
+        if (prefix[2] == 0x66) {
+          src_reg_file = dst_reg_file = SSE;
+          prefix[2] = 0;  // clear prefix now it's served its purpose as part of the opcode
+        } else {
+          src_reg_file = dst_reg_file = MMX;
+        }
+        switch (*instr) {
+          case 0xE0: opcode1 = "pavgb"; break;
+          case 0xE3: opcode1 = "pavgw"; break;
+        }
+        prefix[2] = 0;
+        has_modrm = true;
+        load = true;
+        break;
       case 0xEB:
         if (prefix[2] == 0x66) {
           src_reg_file = dst_reg_file = SSE;