commit 4028a6c83a339036864999fdfd2855b012a9f1a7
author Mark Mendell <mark.p.mendell@intel.com> Wed Feb 19 20:06:20 2014 -0800
committer Ian Rogers <irogers@google.com> Thu Feb 20 15:46:42 2014 -0800
tree c86f355cb39adc7a14469f0a4e5727623fbda443
parent 0b2b3dbaa3db62c0af0d2f23f6aa1c539afe7443

Inline x86 String.indexOf

Take advantage of the presence of a constant search char or start index
to tune the generated code.

Change-Id: I0adcf184fb91b899a95aa4d8ef044a14deb51d88
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>

disassembler/disassembler_x86.cc

diff --git a/disassembler/disassembler_x86.cc b/disassembler/disassembler_x86.cc
index b6ddc95..d86ba7b 100644
--- a/disassembler/disassembler_x86.cc
+++ b/disassembler/disassembler_x86.cc
@@ -633,6 +633,9 @@
   case 0x99:
     opcode << "cdq";
     break;
+  case 0xAF:
+    opcode << (prefix[2] == 0x66 ? "scasw" : "scasl");
+    break;
   case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7:
     opcode << "mov";
     immediate_bytes = 1;
@@ -693,6 +696,7 @@
     has_modrm = true;
     reg_is_opcode = true;
     break;
+  case 0xE3: opcode << "jecxz"; branch_bytes = 1; break;
   case 0xE8: opcode << "call"; branch_bytes = 4; break;
   case 0xE9: opcode << "jmp"; branch_bytes = 4; break;
   case 0xEB: opcode << "jmp"; branch_bytes = 1; break;