Introduce x87 port

src/x87/assembler-x87.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 16 matching lines @@
 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // The original source code covered by the above license above has been
 // modified significantly by Google Inc.
 // Copyright 2011 the V8 project authors. All rights reserved.
 
 // A light-weight IA32 Assembler.
 
-#ifndef V8_IA32_ASSEMBLER_IA32_H_
-#define V8_IA32_ASSEMBLER_IA32_H_
+#ifndef V8_X87_ASSEMBLER_X87_H_
+#define V8_X87_ASSEMBLER_X87_H_
 
 #include "isolate.h"
 #include "serialize.h"
 
 namespace v8 {
 namespace internal {
 
 // CPU Registers.
 //
 // 1) We would prefer to use an enum, but enum values are assignment-
@@ skipping 85 matching lines @@
   return (reg.code() >= 6) ? reg.code() - 2 : reg.code();
 }
 
 
 inline Register Register::FromAllocationIndex(int index)  {
   ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters);
   return (index >= 4) ? from_code(index + 2) : from_code(index);
 }
 
 
-struct XMMRegister {
-  static const int kMaxNumAllocatableRegisters = 7;
+struct X87Register {
+  static const int kMaxNumAllocatableRegisters = 8;
   static const int kMaxNumRegisters = 8;
   static int NumAllocatableRegisters() {
     return kMaxNumAllocatableRegisters;
   }
 
-  static int ToAllocationIndex(XMMRegister reg) {
-    ASSERT(reg.code() != 0);
-    return reg.code() - 1;
+  static int ToAllocationIndex(X87Register reg) {
+    return reg.code_;
   }
 
-  static XMMRegister FromAllocationIndex(int index) {
+  static const char* AllocationIndexToString(int index) {
     ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters);
-    return from_code(index + 1);
+    const char* const names[] = {
+      "stX_0", "stX_1", "stX_2", "stX_3", "stX_4",
+      "stX_5", "stX_6", "stX_7"
+    };
+    return names[index];
   }
 
-  static XMMRegister from_code(int code) {
-    XMMRegister result = { code };
+  static X87Register FromAllocationIndex(int index) {
+    ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters);
+    X87Register result;
+    result.code_ = index;
     return result;
   }
 
   bool is_valid() const {
     return 0 <= code_ && code_ < kMaxNumRegisters;
   }
 
   int code() const {
     ASSERT(is_valid());
     return code_;
   }
 
-  bool is(XMMRegister reg) const { return code_ == reg.code_; }
-
-  static const char* AllocationIndexToString(int index) {
-    ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters);
-    const char* const names[] = {
-      "xmm1",
-      "xmm2",
-      "xmm3",
-      "xmm4",
-      "xmm5",
-      "xmm6",
-      "xmm7"
-    };
-    return names[index];
+  bool is(X87Register reg) const {
+    return code_ == reg.code_;
   }
 
   int code_;
 };
 
 
-typedef XMMRegister DoubleRegister;
+typedef X87Register DoubleRegister;
 
 
-const XMMRegister xmm0 = { 0 };
-const XMMRegister xmm1 = { 1 };
-const XMMRegister xmm2 = { 2 };
-const XMMRegister xmm3 = { 3 };
-const XMMRegister xmm4 = { 4 };
-const XMMRegister xmm5 = { 5 };
-const XMMRegister xmm6 = { 6 };
-const XMMRegister xmm7 = { 7 };
-const XMMRegister no_xmm_reg = { -1 };
+const X87Register stX_0 = { 0 };
+const X87Register stX_1 = { 1 };
+const X87Register stX_2 = { 2 };
+const X87Register stX_3 = { 3 };
+const X87Register stX_4 = { 4 };
+const X87Register stX_5 = { 5 };
+const X87Register stX_6 = { 6 };
+const X87Register stX_7 = { 7 };
 
 
 enum Condition {
   // any value < 0 is considered no_condition
   no_condition  = -1,
 
   overflow      =  0,
   no_overflow   =  1,
   below         =  2,
   above_equal   =  3,
@@ skipping 98 matching lines @@
   times_8 = 3,
   times_int_size = times_4,
   times_half_pointer_size = times_2,
   times_pointer_size = times_4,
   times_twice_pointer_size = times_8
 };
 
 
 class Operand BASE_EMBEDDED {
  public:
-  // XMM reg
-  INLINE(explicit Operand(XMMRegister xmm_reg));
-
   // [disp/r]
   INLINE(explicit Operand(int32_t disp, RelocInfo::Mode rmode));
   // disp only must always be relocated
 
   // [base + disp/r]
   explicit Operand(Register base, int32_t disp,
                    RelocInfo::Mode rmode = RelocInfo::NONE32);
 
   // [base + index*scale + disp/r]
   explicit Operand(Register base,
@@ skipping 284 matching lines @@
 
   void movsx_w(Register dst, Register src) { movsx_w(dst, Operand(src)); }
   void movsx_w(Register dst, const Operand& src);
 
   void movzx_b(Register dst, Register src) { movzx_b(dst, Operand(src)); }
   void movzx_b(Register dst, const Operand& src);
 
   void movzx_w(Register dst, Register src) { movzx_w(dst, Operand(src)); }
   void movzx_w(Register dst, const Operand& src);
 
-  // Conditional moves
-  void cmov(Condition cc, Register dst, Register src) {
-    cmov(cc, dst, Operand(src));
-  }
-  void cmov(Condition cc, Register dst, const Operand& src);
-
   // Flag management.
   void cld();
 
   // Repetitive string instructions.
   void rep_movs();
   void rep_stos();
   void stos();
 
   // Exchange two registers
   void xchg(Register dst, Register src);
@@ skipping 236 matching lines @@
   void fwait();
   void fnclex();
 
   void frndint();
 
   void sahf();
   void setcc(Condition cc, Register reg);
 
   void cpuid();
 
-  // SSE instructions
-  void movaps(XMMRegister dst, XMMRegister src);
-  void shufps(XMMRegister dst, XMMRegister src, byte imm8);
-
-  void andps(XMMRegister dst, const Operand& src);
-  void andps(XMMRegister dst, XMMRegister src) { andps(dst, Operand(src)); }
-  void xorps(XMMRegister dst, const Operand& src);
-  void xorps(XMMRegister dst, XMMRegister src) { xorps(dst, Operand(src)); }
-  void orps(XMMRegister dst, const Operand& src);
-  void orps(XMMRegister dst, XMMRegister src) { orps(dst, Operand(src)); }
-
-  void addps(XMMRegister dst, const Operand& src);
-  void addps(XMMRegister dst, XMMRegister src) { addps(dst, Operand(src)); }
-  void subps(XMMRegister dst, const Operand& src);
-  void subps(XMMRegister dst, XMMRegister src) { subps(dst, Operand(src)); }
-  void mulps(XMMRegister dst, const Operand& src);
-  void mulps(XMMRegister dst, XMMRegister src) { mulps(dst, Operand(src)); }
-  void divps(XMMRegister dst, const Operand& src);
-  void divps(XMMRegister dst, XMMRegister src) { divps(dst, Operand(src)); }
-
-  // SSE2 instructions
-  void cvttss2si(Register dst, const Operand& src);
-  void cvttss2si(Register dst, XMMRegister src) {
-    cvttss2si(dst, Operand(src));
-  }
-  void cvttsd2si(Register dst, const Operand& src);
-  void cvtsd2si(Register dst, XMMRegister src);
-
-  void cvtsi2sd(XMMRegister dst, Register src) { cvtsi2sd(dst, Operand(src)); }
-  void cvtsi2sd(XMMRegister dst, const Operand& src);
-  void cvtss2sd(XMMRegister dst, XMMRegister src);
-  void cvtsd2ss(XMMRegister dst, XMMRegister src);
-
-  void addsd(XMMRegister dst, XMMRegister src);
-  void addsd(XMMRegister dst, const Operand& src);
-  void subsd(XMMRegister dst, XMMRegister src);
-  void mulsd(XMMRegister dst, XMMRegister src);
-  void mulsd(XMMRegister dst, const Operand& src);
-  void divsd(XMMRegister dst, XMMRegister src);
-  void xorpd(XMMRegister dst, XMMRegister src);
-  void sqrtsd(XMMRegister dst, XMMRegister src);
-
-  void andpd(XMMRegister dst, XMMRegister src);
-  void orpd(XMMRegister dst, XMMRegister src);
-
-  void ucomisd(XMMRegister dst, XMMRegister src) { ucomisd(dst, Operand(src)); }
-  void ucomisd(XMMRegister dst, const Operand& src);
-
-  enum RoundingMode {
-    kRoundToNearest = 0x0,
-    kRoundDown      = 0x1,
-    kRoundUp        = 0x2,
-    kRoundToZero    = 0x3
-  };
-
-  void roundsd(XMMRegister dst, XMMRegister src, RoundingMode mode);
-
-  void movmskpd(Register dst, XMMRegister src);
-  void movmskps(Register dst, XMMRegister src);
-
-  void cmpltsd(XMMRegister dst, XMMRegister src);
-  void pcmpeqd(XMMRegister dst, XMMRegister src);
-
-  void movdqa(XMMRegister dst, const Operand& src);
-  void movdqa(const Operand& dst, XMMRegister src);
-  void movdqu(XMMRegister dst, const Operand& src);
-  void movdqu(const Operand& dst, XMMRegister src);
-  void movdq(bool aligned, XMMRegister dst, const Operand& src) {
-    if (aligned) {
-      movdqa(dst, src);
-    } else {
-      movdqu(dst, src);
-    }
-  }
-
-  void movd(XMMRegister dst, Register src) { movd(dst, Operand(src)); }
-  void movd(XMMRegister dst, const Operand& src);
-  void movd(Register dst, XMMRegister src) { movd(Operand(dst), src); }
-  void movd(const Operand& dst, XMMRegister src);
-  void movsd(XMMRegister dst, XMMRegister src) { movsd(dst, Operand(src)); }
-  void movsd(XMMRegister dst, const Operand& src);
-  void movsd(const Operand& dst, XMMRegister src);
-
-
-  void movss(XMMRegister dst, const Operand& src);
-  void movss(const Operand& dst, XMMRegister src);
-  void movss(XMMRegister dst, XMMRegister src) { movss(dst, Operand(src)); }
-  void extractps(Register dst, XMMRegister src, byte imm8);
-
-  void pand(XMMRegister dst, XMMRegister src);
-  void pxor(XMMRegister dst, XMMRegister src);
-  void por(XMMRegister dst, XMMRegister src);
-  void ptest(XMMRegister dst, XMMRegister src);
-
-  void psllq(XMMRegister reg, int8_t shift);
-  void psllq(XMMRegister dst, XMMRegister src);
-  void psrlq(XMMRegister reg, int8_t shift);
-  void psrlq(XMMRegister dst, XMMRegister src);
-  void pshufd(XMMRegister dst, XMMRegister src, uint8_t shuffle);
-  void pextrd(Register dst, XMMRegister src, int8_t offset) {
-    pextrd(Operand(dst), src, offset);
-  }
-  void pextrd(const Operand& dst, XMMRegister src, int8_t offset);
-  void pinsrd(XMMRegister dst, Register src, int8_t offset) {
-    pinsrd(dst, Operand(src), offset);
-  }
-  void pinsrd(XMMRegister dst, const Operand& src, int8_t offset);
-
-  // Parallel XMM operations.
-  void movntdqa(XMMRegister dst, const Operand& src);
-  void movntdq(const Operand& dst, XMMRegister src);
-  // Prefetch src position into cache level.
-  // Level 1, 2 or 3 specifies CPU cache level. Level 0 specifies a
-  // non-temporal
-  void prefetch(const Operand& src, int level);
   // TODO(lrn): Need SFENCE for movnt?
 
   // Debugging
   void Print();
 
   // Check the code size generated from label to here.
   int SizeOfCodeGeneratedSince(Label* label) {
     return pc_offset() - label->pos();
   }
 
@@ skipping 37 matching lines @@
   byte byte_at(int pos) { return buffer_[pos]; }
   void set_byte_at(int pos, byte value) { buffer_[pos] = value; }
 
   // Allocate a constant pool of the correct size for the generated code.
   Handle<ConstantPoolArray> NewConstantPool(Isolate* isolate);
 
   // Generate the constant pool for the generated code.
   void PopulateConstantPool(ConstantPoolArray* constant_pool);
 
  protected:
-  void emit_sse_operand(XMMRegister reg, const Operand& adr);
-  void emit_sse_operand(XMMRegister dst, XMMRegister src);
-  void emit_sse_operand(Register dst, XMMRegister src);
-  void emit_sse_operand(XMMRegister dst, Register src);
-
   byte* addr_at(int pos) { return buffer_ + pos; }
 
 
  private:
   uint32_t long_at(int pos)  {
     return *reinterpret_cast<uint32_t*>(addr_at(pos));
   }
   void long_at_put(int pos, uint32_t x)  {
     *reinterpret_cast<uint32_t*>(addr_at(pos)) = x;
   }
@@ skipping 73 matching lines @@
 
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
-#endif  // V8_IA32_ASSEMBLER_IA32_H_
+#endif  // V8_X87_ASSEMBLER_X87_H_