| // Copyright 2013 the V8 project authors. 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. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF 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. |
| |
| #include <stdlib.h> |
| |
| #include <limits> |
| |
| #include "src/v8.h" |
| |
| #include "src/base/platform/platform.h" |
| #include "src/code-stubs.h" |
| #include "src/double.h" |
| #include "src/factory.h" |
| #include "src/macro-assembler.h" |
| #include "src/objects-inl.h" |
| #include "test/cctest/cctest.h" |
| #include "test/cctest/test-code-stubs.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| int STDCALL ConvertDToICVersion(double d) { |
| #if defined(V8_TARGET_BIG_ENDIAN) |
| const int kExponentIndex = 0; |
| const int kMantissaIndex = 1; |
| #elif defined(V8_TARGET_LITTLE_ENDIAN) |
| const int kExponentIndex = 1; |
| const int kMantissaIndex = 0; |
| #else |
| #error Unsupported endianness |
| #endif |
| union { double d; uint32_t u[2]; } dbl; |
| dbl.d = d; |
| uint32_t exponent_bits = dbl.u[kExponentIndex]; |
| int32_t shifted_mask = static_cast<int32_t>(Double::kExponentMask >> 32); |
| int32_t exponent = (((exponent_bits & shifted_mask) >> |
| (Double::kPhysicalSignificandSize - 32)) - |
| HeapNumber::kExponentBias); |
| if (exponent < 0) { |
| return 0; |
| } |
| uint32_t unsigned_exponent = static_cast<uint32_t>(exponent); |
| int result = 0; |
| uint32_t max_exponent = |
| static_cast<uint32_t>(Double::kPhysicalSignificandSize); |
| if (unsigned_exponent >= max_exponent) { |
| if ((exponent - Double::kPhysicalSignificandSize) < 32) { |
| result = dbl.u[kMantissaIndex] |
| << (exponent - Double::kPhysicalSignificandSize); |
| } |
| } else { |
| uint64_t big_result = |
| (bit_cast<uint64_t>(d) & Double::kSignificandMask) | Double::kHiddenBit; |
| big_result = big_result >> (Double::kPhysicalSignificandSize - exponent); |
| result = static_cast<uint32_t>(big_result); |
| } |
| if (static_cast<int32_t>(exponent_bits) < 0) { |
| return (0 - result); |
| } else { |
| return result; |
| } |
| } |
| |
| |
| void RunOneTruncationTestWithTest(ConvertDToICallWrapper callWrapper, |
| ConvertDToIFunc func, |
| double from, |
| int32_t to) { |
| int32_t result = (*callWrapper)(func, from); |
| CHECK_EQ(to, result); |
| } |
| |
| |
| int32_t DefaultCallWrapper(ConvertDToIFunc func, |
| double from) { |
| return (*func)(from); |
| } |
| |
| |
| // #define NaN and Infinity so that it's possible to cut-and-paste these tests |
| // directly to a .js file and run them. |
| #define NaN (std::numeric_limits<double>::quiet_NaN()) |
| #define Infinity (std::numeric_limits<double>::infinity()) |
| #define RunOneTruncationTest(p1, p2) \ |
| RunOneTruncationTestWithTest(callWrapper, func, p1, p2) |
| |
| |
| void RunAllTruncationTests(ConvertDToIFunc func) { |
| RunAllTruncationTests(DefaultCallWrapper, func); |
| } |
| |
| |
| void RunAllTruncationTests(ConvertDToICallWrapper callWrapper, |
| ConvertDToIFunc func) { |
| RunOneTruncationTest(0, 0); |
| RunOneTruncationTest(0.5, 0); |
| RunOneTruncationTest(-0.5, 0); |
| RunOneTruncationTest(1.5, 1); |
| RunOneTruncationTest(-1.5, -1); |
| RunOneTruncationTest(5.5, 5); |
| RunOneTruncationTest(-5.0, -5); |
| RunOneTruncationTest(NaN, 0); |
| RunOneTruncationTest(Infinity, 0); |
| RunOneTruncationTest(-NaN, 0); |
| RunOneTruncationTest(-Infinity, 0); |
| RunOneTruncationTest(4.94065645841e-324, 0); |
| RunOneTruncationTest(-4.94065645841e-324, 0); |
| |
| RunOneTruncationTest(0.9999999999999999, 0); |
| RunOneTruncationTest(-0.9999999999999999, 0); |
| RunOneTruncationTest(4294967296.0, 0); |
| RunOneTruncationTest(-4294967296.0, 0); |
| RunOneTruncationTest(9223372036854775000.0, -1024); |
| RunOneTruncationTest(-9223372036854775000.0, 1024); |
| RunOneTruncationTest(4.5036e+15, 372629504); |
| RunOneTruncationTest(-4.5036e+15, -372629504); |
| |
| RunOneTruncationTest(287524199.5377777, 0x11234567); |
| RunOneTruncationTest(-287524199.5377777, -0x11234567); |
| RunOneTruncationTest(2300193596.302222, -1994773700); |
| RunOneTruncationTest(-2300193596.302222, 1994773700); |
| RunOneTruncationTest(4600387192.604444, 305419896); |
| RunOneTruncationTest(-4600387192.604444, -305419896); |
| RunOneTruncationTest(4823855600872397.0, 1737075661); |
| RunOneTruncationTest(-4823855600872397.0, -1737075661); |
| |
| RunOneTruncationTest(4503603922337791.0, -1); |
| RunOneTruncationTest(-4503603922337791.0, 1); |
| RunOneTruncationTest(4503601774854143.0, 2147483647); |
| RunOneTruncationTest(-4503601774854143.0, -2147483647); |
| RunOneTruncationTest(9007207844675582.0, -2); |
| RunOneTruncationTest(-9007207844675582.0, 2); |
| |
| RunOneTruncationTest(2.4178527921507624e+24, -536870912); |
| RunOneTruncationTest(-2.4178527921507624e+24, 536870912); |
| RunOneTruncationTest(2.417853945072267e+24, -536870912); |
| RunOneTruncationTest(-2.417853945072267e+24, 536870912); |
| |
| RunOneTruncationTest(4.8357055843015248e+24, -1073741824); |
| RunOneTruncationTest(-4.8357055843015248e+24, 1073741824); |
| RunOneTruncationTest(4.8357078901445341e+24, -1073741824); |
| RunOneTruncationTest(-4.8357078901445341e+24, 1073741824); |
| |
| RunOneTruncationTest(2147483647.0, 2147483647); |
| RunOneTruncationTest(-2147483648.0, -2147483647-1); |
| RunOneTruncationTest(9.6714111686030497e+24, -2147483647-1); |
| RunOneTruncationTest(-9.6714111686030497e+24, -2147483647-1); |
| RunOneTruncationTest(9.6714157802890681e+24, -2147483647-1); |
| RunOneTruncationTest(-9.6714157802890681e+24, -2147483647-1); |
| RunOneTruncationTest(1.9342813113834065e+25, -2147483647-1); |
| RunOneTruncationTest(-1.9342813113834065e+25, -2147483647-1); |
| |
| RunOneTruncationTest(3.868562622766813e+25, 0); |
| RunOneTruncationTest(-3.868562622766813e+25, 0); |
| RunOneTruncationTest(1.7976931348623157e+308, 0); |
| RunOneTruncationTest(-1.7976931348623157e+308, 0); |
| } |
| |
| #undef NaN |
| #undef Infinity |
| #undef RunOneTruncationTest |
| |
| |
| TEST(CodeStubMajorKeys) { |
| CcTest::InitializeVM(); |
| LocalContext context; |
| Isolate* isolate = CcTest::i_isolate(); |
| |
| #define CHECK_STUB(NAME) \ |
| { \ |
| HandleScope scope(isolate); \ |
| NAME##Stub stub_impl(0xABCD, isolate); \ |
| CodeStub* stub = &stub_impl; \ |
| CHECK_EQ(stub->MajorKey(), CodeStub::NAME); \ |
| } |
| CODE_STUB_LIST(CHECK_STUB); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |
