Start IA32 implemenetation of regexp2k

regexp2000/src/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 527 matching lines @@
 
 
 void Assembler::pop(const Operand& dst) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   EMIT(0x8F);
   emit_operand(eax, 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_;
   EMIT(0x8A);
   emit_operand(dst, src);
 }
 
 
 void Assembler::mov_b(const Operand& dst, int8_t imm8) {
   EnsureSpace ensure_space(this);
@@ skipping 264 matching lines @@
 }
 
 
 void Assembler::cmp(const Operand& op, const Immediate& imm) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   emit_arith(7, op, 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_;
   EMIT(0xFE);
   EMIT(0xC8 | dst.code());
 }
 
 
 void Assembler::dec(Register dst) {
   EnsureSpace ensure_space(this);
@@ skipping 321 matching lines @@
 }
 
 
 void Assembler::xor_(const Operand& dst, const Immediate& x) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   emit_arith(6, dst, 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_;
   EMIT(0x0F);
   EMIT(0xAB);
   emit_operand(src, dst);
 }
 
 
 void Assembler::hlt() {
@@ skipping 33 matching lines @@
   if (imm16 == 0) {
     EMIT(0xC3);
   } else {
     EMIT(0xC2);
     EMIT(imm16 & 0xFF);
     EMIT((imm16 >> 8) & 0xFF);
   }
 }
 
 
-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.
 //
 // Bound labels refer to known positions in the already
 // generated code. pos() is the position the label refers to.
 //
 // Linked labels refer to unknown positions in the code
 // to be generated; pos() is the position of the 32bit
 // Displacement of the last instruction using the label.
 
@@ skipping 820 matching lines @@
   ASSERT(bound_label.is_bound());
   ASSERT(0 <= position);
   ASSERT(position + static_cast<int>(sizeof(uint32_t)) <= pc_offset());
   ASSERT(long_at(position) == 0);  // only initialize once!
 
   uint32_t label_loc = reinterpret_cast<uint32_t>(addr_at(bound_label.pos()));
   long_at_put(position, label_loc);
 }
 
 } }  // namespace v8::internal