Implements int to double conversion instructions for MIPS simulator, assembler, disassembler.

runtime/vm/assembler_mips_test.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 1466 matching lines @@
   __ Ret();
 }
 
 
 ASSEMBLER_TEST_RUN(Cop1COLE_not_taken, test) {
   typedef int (*SimpleCode)();
   EXPECT_EQ(0, EXECUTE_TEST_CODE_INT32(SimpleCode, test->entry()));
 }
 
 
+ASSEMBLER_TEST_GENERATE(Cop1CvtDW, assembler) {
+  __ LoadImmediate(T0, 42);
+  __ mtc1(T0, F0);
+  __ cvtdw(F2, F0);
+  __ mfc1(V0, F2);
+  __ mfc1(V1, F3);
+  __ Ret();
+}
+
+
+ASSEMBLER_TEST_RUN(Cop1CvtDW, test) {
+  typedef double (*SimpleCode)();
+  EXPECT(test != NULL);
+  double res = EXECUTE_TEST_CODE_DOUBLE(SimpleCode, test->entry());
+  EXPECT_FLOAT_EQ(42.0, res, 0.001);
+}
+
+
+ASSEMBLER_TEST_GENERATE(Cop1CvtDW_neg, assembler) {
+  __ LoadImmediate(T0, -42);
+  __ mtc1(T0, F0);
+  __ cvtdw(F2, F0);
+  __ mfc1(V0, F2);
+  __ mfc1(V1, F3);
+  __ Ret();
+}
+
+
+ASSEMBLER_TEST_RUN(Cop1CvtDW_neg, test) {
+  typedef double (*SimpleCode)();
+  EXPECT(test != NULL);
+  double res = EXECUTE_TEST_CODE_DOUBLE(SimpleCode, test->entry());
+  EXPECT_FLOAT_EQ(-42.0, res, 0.001);
+}
+
+
+ASSEMBLER_TEST_GENERATE(Cop1CvtDL, assembler) {
+  __ LoadImmediate(T0, 0x1);
+  __ mtc1(ZR, F0);
+  __ mtc1(T0, F1);  // D0 <- 0x100000000 = 4294967296
+  __ cvtdl(F2, F0);
+  __ mfc1(V0, F2);
+  __ mfc1(V1, F3);
+  __ Ret();
+}
+
+
+ASSEMBLER_TEST_RUN(Cop1CvtDL, test) {
+  typedef double (*SimpleCode)();
+  EXPECT(test != NULL);
+  double res = EXECUTE_TEST_CODE_DOUBLE(SimpleCode, test->entry());
+  EXPECT_FLOAT_EQ(4294967296.0, res, 0.001);
+}
+
+
+ASSEMBLER_TEST_GENERATE(Cop1CvtDL_neg, assembler) {
+  __ LoadImmediate(T0, 0xffffffff);
+  __ mtc1(T0, F0);
+  __ mtc1(T0, F1);  // D0 <- 0xffffffffffffffff = -1
+  __ cvtdl(F2, F0);
+  __ mfc1(V0, F2);
+  __ mfc1(V1, F3);
+  __ Ret();
+}
+
+
+ASSEMBLER_TEST_RUN(Cop1CvtDL_neg, test) {
+  typedef double (*SimpleCode)();
+  EXPECT(test != NULL);
+  double res = EXECUTE_TEST_CODE_DOUBLE(SimpleCode, test->entry());
+  EXPECT_FLOAT_EQ(-1.0, res, 0.001);
+}
+
+
 // Called from assembler_test.cc.
 // RA: return address.
 // A0: context.
 // A1: value.
 // A2: growable array.
 ASSEMBLER_TEST_GENERATE(StoreIntoObject, assembler) {
   __ addiu(SP, SP, Immediate(-2 * kWordSize));
   __ sw(CTX, Address(SP, 1 * kWordSize));
   __ sw(RA, Address(SP, 0 * kWordSize));
 
   __ mov(CTX, A0);
   __ StoreIntoObject(A2,
                      FieldAddress(A2, GrowableObjectArray::data_offset()),
                      A1);
   __ lw(RA, Address(SP, 0 * kWordSize));
   __ lw(CTX, Address(SP, 1 * kWordSize));
   __ addiu(SP, SP, Immediate(2 * kWordSize));
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS