Start IA32 implemenetation of regexp2k

regexp2000/src/assembler-ia32.cc

Index: regexp2000/src/assembler-ia32.cc
diff --git a/regexp2000/src/assembler-ia32.cc b/regexp2000/src/assembler-ia32.cc
index e41f1b76a322eb52585bae3b0afe57f206c918e4..989889ce0b87b6cd6bb3580277661f7148ec8650 100644
--- a/regexp2000/src/assembler-ia32.cc
+++ b/regexp2000/src/assembler-ia32.cc
@@ -545,6 +545,22 @@ void Assembler::pop(const Operand& dst) {
 }
 
 
+void Assembler::enter(const Immediate& size) {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0xC8);
+  emit_w(size);
+  EMIT(0);
+}
+
+
+void Assembler::leave() {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0xC9);
+}
+
+
 void Assembler::mov_b(Register dst, const Operand& src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
@@ -829,6 +845,23 @@ void Assembler::cmp(const Operand& op, const Immediate& imm) {
 }
 
 
+void Assembler::rep_cmpsb() {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0xFC);  // CLD to ensure forward operation
+  EMIT(0xF3);  // REP
+  EMIT(0xA6);  // CMPSB
+}
+
+void Assembler::rep_cmpsw() {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0xFC);  // CLD to ensure forward operation
+  EMIT(0xF3);  // REP
+  EMIT(0xA7);  // CMPSW
+}
+
+
 void Assembler::dec_b(Register dst) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
@@ -1170,6 +1203,15 @@ void Assembler::xor_(const Operand& dst, const Immediate& x) {
 }
 
 
+void Assembler::bt(const Operand& dst, Register src) {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0x0F);
+  EMIT(0xA3);
+  emit_operand(src, dst);
+}
+
+
 void Assembler::bts(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
@@ -1223,13 +1265,6 @@ void Assembler::ret(int imm16) {
 }
 
 
-void Assembler::leave() {
-  EnsureSpace ensure_space(this);
-  last_pc_ = pc_;
-  EMIT(0xC9);
-}
-
-
 // Labels refer to positions in the (to be) generated code.
 // There are bound, linked, and unused labels.
 //