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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | |
| 2 // Rrdistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Rrdistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Rrdistributions 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 "v8.h" | |
| 31 | |
| 32 #include "cctest.h" | |
| 33 #include "code-stubs.h" | |
| 34 #include "test-code-stubs.h" | |
| 35 #include "factory.h" | |
| 36 #include "macro-assembler.h" | |
| 37 #include "platform.h" | |
| 38 #include "simulator.h" | |
| 39 | |
| 40 using namespace v8::internal; | |
| 41 | |
| 42 #define __ masm. | |
| 43 | |
| 44 ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate, | |
| 45 Register source_reg, | |
| 46 Register destination_reg, | |
| 47 bool inline_fastpath) { | |
| 48 // Allocate an executable page of memory. | |
| 49 size_t actual_size = 2 * Assembler::kMinimalBufferSize; | |
| 50 byte* buffer = static_cast<byte*>(OS::Allocate(actual_size, | |
| 51 &actual_size, | |
| 52 true)); | |
| 53 CHECK(buffer); | |
| 54 HandleScope handles(isolate); | |
| 55 MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size)); | |
| 56 DoubleToIStub stub(source_reg, destination_reg, 0, true, inline_fastpath); | |
| 57 | |
| 58 byte* start = stub.GetCode(isolate)->instruction_start(); | |
| 59 Label done; | |
| 60 | |
| 61 __ SetStackPointer(csp); | |
| 62 __ PushCalleeSavedRegisters(); | |
| 63 __ Mov(jssp, csp); | |
| 64 __ SetStackPointer(jssp); | |
| 65 | |
| 66 // Push the double argument. | |
| 67 __ Push(d0); | |
| 68 __ Mov(source_reg, jssp); | |
| 69 | |
| 70 MacroAssembler::PushPopQueue queue(&masm); | |
| 71 | |
| 72 // Save registers make sure they don't get clobbered. | |
| 73 int source_reg_offset = kDoubleSize; | |
| 74 int reg_num = 0; | |
| 75 for (;reg_num < Register::NumAllocatableRegisters(); ++reg_num) { | |
| 76 Register reg = Register::from_code(reg_num); | |
| 77 if (!reg.is(destination_reg)) { | |
| 78 queue.Queue(reg); | |
| 79 source_reg_offset += kPointerSize; | |
| 80 } | |
| 81 } | |
| 82 // Re-push the double argument. | |
| 83 queue.Queue(d0); | |
| 84 | |
| 85 queue.PushQueued(); | |
| 86 | |
| 87 // Call through to the actual stub | |
| 88 if (inline_fastpath) { | |
| 89 __ Ldr(d0, MemOperand(source_reg)); | |
| 90 __ TryConvertDoubleToInt64(destination_reg, d0, &done); | |
| 91 if (destination_reg.is(source_reg)) { | |
| 92 // Restore clobbered source_reg. | |
| 93 __ add(source_reg, jssp, Operand(source_reg_offset)); | |
| 94 } | |
| 95 } | |
| 96 __ Call(start, RelocInfo::EXTERNAL_REFERENCE); | |
| 97 __ bind(&done); | |
| 98 | |
| 99 __ Drop(1, kDoubleSize); | |
| 100 | |
| 101 // // Make sure no registers have been unexpectedly clobbered | |
| 102 for (--reg_num; reg_num >= 0; --reg_num) { | |
| 103 Register reg = Register::from_code(reg_num); | |
| 104 if (!reg.is(destination_reg)) { | |
| 105 __ Pop(ip0); | |
| 106 __ cmp(reg, ip0); | |
| 107 __ Assert(eq, kRegisterWasClobbered); | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 __ Drop(1, kDoubleSize); | |
| 112 | |
| 113 if (!destination_reg.is(x0)) | |
| 114 __ Mov(x0, destination_reg); | |
| 115 | |
| 116 // Restore callee save registers. | |
| 117 __ Mov(csp, jssp); | |
| 118 __ SetStackPointer(csp); | |
| 119 __ PopCalleeSavedRegisters(); | |
| 120 | |
| 121 __ Ret(); | |
| 122 | |
| 123 CodeDesc desc; | |
| 124 masm.GetCode(&desc); | |
| 125 CPU::FlushICache(buffer, actual_size); | |
| 126 return (reinterpret_cast<ConvertDToIFunc>( | |
| 127 reinterpret_cast<intptr_t>(buffer))); | |
| 128 } | |
| 129 | |
| 130 #undef __ | |
| 131 | |
| 132 | |
| 133 static Isolate* GetIsolateFrom(LocalContext* context) { | |
| 134 return reinterpret_cast<Isolate*>((*context)->GetIsolate()); | |
| 135 } | |
| 136 | |
| 137 | |
| 138 int32_t RunGeneratedCodeCallWrapper(ConvertDToIFunc func, | |
| 139 double from) { | |
| 140 #ifdef USE_SIMULATOR | |
| 141 Simulator::CallArgument args[] = { | |
| 142 Simulator::CallArgument(from), | |
| 143 Simulator::CallArgument::End() | |
| 144 }; | |
| 145 return Simulator::current(Isolate::Current())->CallInt64( | |
| 146 FUNCTION_ADDR(func), args); | |
| 147 #else | |
| 148 return (*func)(from); | |
| 149 #endif | |
| 150 } | |
| 151 | |
| 152 | |
| 153 TEST(ConvertDToI) { | |
| 154 CcTest::InitializeVM(); | |
| 155 LocalContext context; | |
| 156 Isolate* isolate = GetIsolateFrom(&context); | |
| 157 HandleScope scope(isolate); | |
| 158 | |
| 159 #if DEBUG | |
| 160 // Verify that the tests actually work with the C version. In the release | |
| 161 // code, the compiler optimizes it away because it's all constant, but does it | |
| 162 // wrong, triggering an assert on gcc. | |
| 163 RunAllTruncationTests(&ConvertDToICVersion); | |
| 164 #endif | |
| 165 | |
| 166 Register source_registers[] = {jssp, x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, | |
| 167 x10, x11, x12, x13, x14, x15, x18, x19, x20, | |
| 168 x21, x22, x23, x24}; | |
| 169 Register dest_registers[] = {x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, | |
| 170 x12, x13, x14, x15, x18, x19, x20, x21, x22, x23, | |
| 171 x24}; | |
| 172 | |
| 173 for (size_t s = 0; s < sizeof(source_registers) / sizeof(Register); s++) { | |
| 174 for (size_t d = 0; d < sizeof(dest_registers) / sizeof(Register); d++) { | |
| 175 RunAllTruncationTests( | |
| 176 RunGeneratedCodeCallWrapper, | |
| 177 MakeConvertDToIFuncTrampoline(isolate, | |
| 178 source_registers[s], | |
| 179 dest_registers[d], | |
| 180 false)); | |
| 181 RunAllTruncationTests( | |
| 182 RunGeneratedCodeCallWrapper, | |
| 183 MakeConvertDToIFuncTrampoline(isolate, | |
| 184 source_registers[s], | |
| 185 dest_registers[d], | |
| 186 true)); | |
| 187 } | |
| 188 } | |
| 189 } | |
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Chromium Code Reviews
Issue 207823003:
Rename A64 port to ARM64 port (Closed)
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge