1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #include <stdlib.h> 29 30 #include "src/v8.h" 31 #include "src/macro-assembler.h" 32 #include "src/mips/macro-assembler-mips.h" 33 #include "src/mips/simulator-mips.h" 34 #include "test/cctest/cctest.h" 35 36 37 using namespace v8::internal; 38 39 typedef void* (*F)(int x, int y, int p2, int p3, int p4); 40 41 #define __ masm-> 42 43 44 static byte to_non_zero(int n) { 45 return static_cast<unsigned>(n) % 255 + 1; 46 } 47 48 49 static bool all_zeroes(const byte* beg, const byte* end) { 50 CHECK(beg); 51 CHECK(beg <= end); 52 while (beg < end) { 53 if (*beg++ != 0) 54 return false; 55 } 56 return true; 57 } 58 59 60 TEST(CopyBytes) { 61 CcTest::InitializeVM(); 62 Isolate* isolate = Isolate::Current(); 63 HandleScope handles(isolate); 64 65 const int data_size = 1 * KB; 66 size_t act_size; 67 68 // Allocate two blocks to copy data between. 69 byte* src_buffer = static_cast<byte*>(OS::Allocate(data_size, &act_size, 0)); 70 CHECK(src_buffer); 71 CHECK(act_size >= static_cast<size_t>(data_size)); 72 byte* dest_buffer = static_cast<byte*>(OS::Allocate(data_size, &act_size, 0)); 73 CHECK(dest_buffer); 74 CHECK(act_size >= static_cast<size_t>(data_size)); 75 76 // Storage for a0 and a1. 77 byte* a0_; 78 byte* a1_; 79 80 MacroAssembler assembler(isolate, NULL, 0); 81 MacroAssembler* masm = &assembler; 82 83 // Code to be generated: The stuff in CopyBytes followed by a store of a0 and 84 // a1, respectively. 85 __ CopyBytes(a0, a1, a2, a3); 86 __ li(a2, Operand(reinterpret_cast<int>(&a0_))); 87 __ li(a3, Operand(reinterpret_cast<int>(&a1_))); 88 __ sw(a0, MemOperand(a2)); 89 __ jr(ra); 90 __ sw(a1, MemOperand(a3)); 91 92 CodeDesc desc; 93 masm->GetCode(&desc); 94 Handle<Code> code = isolate->factory()->NewCode( 95 desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); 96 97 ::F f = FUNCTION_CAST< ::F>(code->entry()); 98 99 // Initialise source data with non-zero bytes. 100 for (int i = 0; i < data_size; i++) { 101 src_buffer[i] = to_non_zero(i); 102 } 103 104 const int fuzz = 11; 105 106 for (int size = 0; size < 600; size++) { 107 for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) { 108 for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) { 109 memset(dest_buffer, 0, data_size); 110 CHECK(dest + size < dest_buffer + data_size); 111 (void) CALL_GENERATED_CODE(f, reinterpret_cast<int>(src), 112 reinterpret_cast<int>(dest), size, 0, 0); 113 // a0 and a1 should point at the first byte after the copied data. 114 CHECK_EQ(src + size, a0_); 115 CHECK_EQ(dest + size, a1_); 116 // Check that we haven't written outside the target area. 117 CHECK(all_zeroes(dest_buffer, dest)); 118 CHECK(all_zeroes(dest + size, dest_buffer + data_size)); 119 // Check the target area. 120 CHECK_EQ(0, memcmp(src, dest, size)); 121 } 122 } 123 } 124 125 // Check that the source data hasn't been clobbered. 126 for (int i = 0; i < data_size; i++) { 127 CHECK(src_buffer[i] == to_non_zero(i)); 128 } 129 } 130 131 132 static void TestNaN(const char *code) { 133 // NaN value is different on MIPS and x86 architectures, and TEST(NaNx) 134 // tests checks the case where a x86 NaN value is serialized into the 135 // snapshot on the simulator during cross compilation. 136 v8::HandleScope scope(CcTest::isolate()); 137 v8::Local<v8::Context> context = CcTest::NewContext(PRINT_EXTENSION); 138 v8::Context::Scope context_scope(context); 139 140 v8::Local<v8::Script> script = v8::Script::Compile(v8_str(code)); 141 v8::Local<v8::Object> result = v8::Local<v8::Object>::Cast(script->Run()); 142 // Have to populate the handle manually, as it's not Cast-able. 143 i::Handle<i::JSObject> o = 144 v8::Utils::OpenHandle<v8::Object, i::JSObject>(result); 145 i::Handle<i::JSArray> array1(reinterpret_cast<i::JSArray*>(*o)); 146 i::FixedDoubleArray* a = i::FixedDoubleArray::cast(array1->elements()); 147 double value = a->get_scalar(0); 148 CHECK(std::isnan(value) && 149 i::BitCast<uint64_t>(value) == 150 i::BitCast<uint64_t>( 151 i::FixedDoubleArray::canonical_not_the_hole_nan_as_double())); 152 } 153 154 155 TEST(NaN0) { 156 TestNaN( 157 "var result;" 158 "for (var i = 0; i < 2; i++) {" 159 " result = new Array(Number.NaN, Number.POSITIVE_INFINITY);" 160 "}" 161 "result;"); 162 } 163 164 165 TEST(NaN1) { 166 TestNaN( 167 "var result;" 168 "for (var i = 0; i < 2; i++) {" 169 " result = [NaN];" 170 "}" 171 "result;"); 172 } 173 174 175 #undef __ 176
