| // 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 "src/v8.h" |
| #include "test/cctest/cctest.h" |
| |
| #include "src/macro-assembler.h" |
| #include "src/mips64/macro-assembler-mips64.h" |
| #include "src/mips64/simulator-mips64.h" |
| |
| |
| using namespace v8::internal; |
| |
| typedef void* (*F)(int64_t x, int64_t y, int p2, int p3, int p4); |
| |
| #define __ masm-> |
| |
| |
| static byte to_non_zero(int n) { |
| return static_cast<unsigned>(n) % 255 + 1; |
| } |
| |
| |
| static bool all_zeroes(const byte* beg, const byte* end) { |
| CHECK(beg); |
| CHECK(beg <= end); |
| while (beg < end) { |
| if (*beg++ != 0) |
| return false; |
| } |
| return true; |
| } |
| |
| |
| TEST(CopyBytes) { |
| CcTest::InitializeVM(); |
| Isolate* isolate = Isolate::Current(); |
| HandleScope handles(isolate); |
| |
| const int data_size = 1 * KB; |
| size_t act_size; |
| |
| // Allocate two blocks to copy data between. |
| byte* src_buffer = |
| static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0)); |
| CHECK(src_buffer); |
| CHECK(act_size >= static_cast<size_t>(data_size)); |
| byte* dest_buffer = |
| static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0)); |
| CHECK(dest_buffer); |
| CHECK(act_size >= static_cast<size_t>(data_size)); |
| |
| // Storage for a0 and a1. |
| byte* a0_; |
| byte* a1_; |
| |
| MacroAssembler assembler(isolate, NULL, 0); |
| MacroAssembler* masm = &assembler; |
| |
| // Code to be generated: The stuff in CopyBytes followed by a store of a0 and |
| // a1, respectively. |
| __ CopyBytes(a0, a1, a2, a3); |
| __ li(a2, Operand(reinterpret_cast<int64_t>(&a0_))); |
| __ li(a3, Operand(reinterpret_cast<int64_t>(&a1_))); |
| __ sd(a0, MemOperand(a2)); |
| __ jr(ra); |
| __ sd(a1, MemOperand(a3)); |
| |
| CodeDesc desc; |
| masm->GetCode(&desc); |
| Handle<Code> code = isolate->factory()->NewCode( |
| desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| |
| ::F f = FUNCTION_CAST< ::F>(code->entry()); |
| |
| // Initialise source data with non-zero bytes. |
| for (int i = 0; i < data_size; i++) { |
| src_buffer[i] = to_non_zero(i); |
| } |
| |
| const int fuzz = 11; |
| |
| for (int size = 0; size < 600; size++) { |
| for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) { |
| for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) { |
| memset(dest_buffer, 0, data_size); |
| CHECK(dest + size < dest_buffer + data_size); |
| (void) CALL_GENERATED_CODE(f, reinterpret_cast<int64_t>(src), |
| reinterpret_cast<int64_t>(dest), |
| size, 0, 0); |
| // a0 and a1 should point at the first byte after the copied data. |
| CHECK_EQ(src + size, a0_); |
| CHECK_EQ(dest + size, a1_); |
| // Check that we haven't written outside the target area. |
| CHECK(all_zeroes(dest_buffer, dest)); |
| CHECK(all_zeroes(dest + size, dest_buffer + data_size)); |
| // Check the target area. |
| CHECK_EQ(0, memcmp(src, dest, size)); |
| } |
| } |
| } |
| |
| // Check that the source data hasn't been clobbered. |
| for (int i = 0; i < data_size; i++) { |
| CHECK(src_buffer[i] == to_non_zero(i)); |
| } |
| } |
| |
| |
| TEST(LoadConstants) { |
| CcTest::InitializeVM(); |
| Isolate* isolate = Isolate::Current(); |
| HandleScope handles(isolate); |
| |
| int64_t refConstants[64]; |
| int64_t result[64]; |
| |
| int64_t mask = 1; |
| for (int i = 0; i < 64; i++) { |
| refConstants[i] = ~(mask << i); |
| } |
| |
| MacroAssembler assembler(isolate, NULL, 0); |
| MacroAssembler* masm = &assembler; |
| |
| __ mov(a4, a0); |
| for (int i = 0; i < 64; i++) { |
| // Load constant. |
| __ li(a5, Operand(refConstants[i])); |
| __ sd(a5, MemOperand(a4)); |
| __ Daddu(a4, a4, Operand(kPointerSize)); |
| } |
| |
| __ jr(ra); |
| __ nop(); |
| |
| CodeDesc desc; |
| masm->GetCode(&desc); |
| Handle<Code> code = isolate->factory()->NewCode( |
| desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| |
| ::F f = FUNCTION_CAST< ::F>(code->entry()); |
| (void) CALL_GENERATED_CODE(f, reinterpret_cast<int64_t>(result), |
| 0, 0, 0, 0); |
| // Check results. |
| for (int i = 0; i < 64; i++) { |
| CHECK(refConstants[i] == result[i]); |
| } |
| } |
| |
| |
| TEST(LoadAddress) { |
| CcTest::InitializeVM(); |
| Isolate* isolate = Isolate::Current(); |
| HandleScope handles(isolate); |
| |
| MacroAssembler assembler(isolate, NULL, 0); |
| MacroAssembler* masm = &assembler; |
| Label to_jump, skip; |
| __ mov(a4, a0); |
| |
| __ Branch(&skip); |
| __ bind(&to_jump); |
| __ nop(); |
| __ nop(); |
| __ jr(ra); |
| __ nop(); |
| __ bind(&skip); |
| __ li(a4, Operand(masm->jump_address(&to_jump)), ADDRESS_LOAD); |
| int check_size = masm->InstructionsGeneratedSince(&skip); |
| CHECK_EQ(check_size, 4); |
| __ jr(a4); |
| __ nop(); |
| __ stop("invalid"); |
| __ stop("invalid"); |
| __ stop("invalid"); |
| __ stop("invalid"); |
| __ stop("invalid"); |
| |
| |
| CodeDesc desc; |
| masm->GetCode(&desc); |
| Handle<Code> code = isolate->factory()->NewCode( |
| desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); |
| |
| ::F f = FUNCTION_CAST< ::F>(code->entry()); |
| (void) CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0); |
| // Check results. |
| } |
| |
| #undef __ |