Implement X87 stack tracking and x87 multiplication

src/ia32/assembler-ia32.h

 // 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 211 matching lines @@
 #define xmm0 (static_cast<const XMMRegister&>(double_register_0))
 #define xmm1 (static_cast<const XMMRegister&>(double_register_1))
 #define xmm2 (static_cast<const XMMRegister&>(double_register_2))
 #define xmm3 (static_cast<const XMMRegister&>(double_register_3))
 #define xmm4 (static_cast<const XMMRegister&>(double_register_4))
 #define xmm5 (static_cast<const XMMRegister&>(double_register_5))
 #define xmm6 (static_cast<const XMMRegister&>(double_register_6))
 #define xmm7 (static_cast<const XMMRegister&>(double_register_7))
 
 
-struct X87TopOfStackRegister : IntelDoubleRegister {
-  static const int kNumAllocatableRegisters = 1;
-  static const int kNumRegisters = 1;
+struct X87Register : IntelDoubleRegister {
+  static const int kNumAllocatableRegisters = 5;
+  static const int kNumRegisters = 5;
 
-  bool is(X87TopOfStackRegister reg) const {
+  bool is(X87Register reg) const {
     return code_ == reg.code_;
   }
 
   static const char* AllocationIndexToString(int index) {
     ASSERT(index >= 0 && index < kNumAllocatableRegisters);
     const char* const names[] = {
-      "st0",
+      "stX_0", "stX_1", "stX_2", "stX_3", "stX_4"
     };
     return names[index];
   }
 
-  static int ToAllocationIndex(X87TopOfStackRegister reg) {
-    ASSERT(reg.code() == 0);
-    return 0;
+  static X87Register FromAllocationIndex(int index) {
+    STATIC_ASSERT(sizeof(X87Register) == sizeof(IntelDoubleRegister));
+    ASSERT(index >= 0 && index < NumAllocatableRegisters());
+    X87Register result;
+    result.code_ = index;
+    return result;
+  }
+
+  static int ToAllocationIndex(X87Register reg) {
+    return reg.code_;
   }
 };
 
-#define x87tos \
-  static_cast<const X87TopOfStackRegister&>(double_register_0)
+#define stX_0 static_cast<const X87Register&>(double_register_0)
+#define stX_1 static_cast<const X87Register&>(double_register_1)
+#define stX_2 static_cast<const X87Register&>(double_register_2)
+#define stX_3 static_cast<const X87Register&>(double_register_3)
+#define stX_4 static_cast<const X87Register&>(double_register_4)
 
 
 typedef IntelDoubleRegister DoubleRegister;
 
 
 enum Condition {
   // any value < 0 is considered no_condition
   no_condition  = -1,
 
   overflow      =  0,
@@ skipping 674 matching lines @@
   void fsin();
   void fptan();
   void fyl2x();
   void f2xm1();
   void fscale();
   void fninit();
 
   void fadd(int i);
   void fsub(int i);
   void fmul(int i);
+  void fmul_i(int i);
   void fdiv(int i);
 
   void fisub_s(const Operand& adr);
 
   void faddp(int i = 1);
   void fsubp(int i = 1);
   void fsubrp(int i = 1);
   void fmulp(int i = 1);
   void fdivp(int i = 1);
   void fprem();
@@ skipping 259 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_