| // 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 "v8.h" |
| #include "macro-assembler.h" |
| #include "arm/macro-assembler-arm.h" |
| #include "arm/simulator-arm.h" |
| #include "cctest.h" |
| |
| |
| using namespace v8::internal; |
| |
| typedef void* (*F)(int x, int 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*>(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*>(OS::Allocate(data_size, &act_size, 0)); |
| CHECK(dest_buffer); |
| CHECK(act_size >= static_cast<size_t>(data_size)); |
| |
| // Storage for R0 and R1. |
| byte* r0_; |
| byte* r1_; |
| |
| MacroAssembler assembler(isolate, NULL, 0); |
| MacroAssembler* masm = &assembler; |
| |
| // Code to be generated: The stuff in CopyBytes followed by a store of R0 and |
| // R1, respectively. |
| __ CopyBytes(r0, r1, r2, r3); |
| __ mov(r2, Operand(reinterpret_cast<int>(&r0_))); |
| __ mov(r3, Operand(reinterpret_cast<int>(&r1_))); |
| __ str(r0, MemOperand(r2)); |
| __ str(r1, MemOperand(r3)); |
| __ bx(lr); |
| |
| CodeDesc desc; |
| masm->GetCode(&desc); |
| Object* code = isolate->heap()->CreateCode( |
| desc, |
| Code::ComputeFlags(Code::STUB), |
| Handle<Code>())->ToObjectChecked(); |
| CHECK(code->IsCode()); |
| |
| F f = FUNCTION_CAST<F>(Code::cast(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<int>(src), |
| reinterpret_cast<int>(dest), size, 0, 0); |
| // R0 and R1 should point at the first byte after the copied data. |
| CHECK_EQ(src + size, r0_); |
| CHECK_EQ(dest + size, r1_); |
| // 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)); |
| } |
| } |
| |
| |
| typedef int (*F5)(void*, void*, void*, void*, void*); |
| |
| |
| TEST(LoadAndStoreWithRepresentation) { |
| v8::internal::V8::Initialize(NULL); |
| |
| // Allocate an executable page of memory. |
| size_t actual_size; |
| byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize, |
| &actual_size, |
| true)); |
| CHECK(buffer); |
| Isolate* isolate = CcTest::i_isolate(); |
| HandleScope handles(isolate); |
| MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size)); |
| MacroAssembler* masm = &assembler; // Create a pointer for the __ macro. |
| __ sub(sp, sp, Operand(1 * kPointerSize)); |
| Label exit; |
| |
| // Test 1. |
| __ mov(r0, Operand(1)); // Test number. |
| __ mov(r1, Operand(0)); |
| __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(-1)); |
| __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8()); |
| __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(255)); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| __ mov(r2, Operand(255)); |
| __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8()); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| |
| // Test 2. |
| __ mov(r0, Operand(2)); // Test number. |
| __ mov(r1, Operand(0)); |
| __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(-1)); |
| __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer8()); |
| __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(255)); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| __ mov(r2, Operand(-1)); |
| __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer8()); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| |
| // Test 3. |
| __ mov(r0, Operand(3)); // Test number. |
| __ mov(r1, Operand(0)); |
| __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(-1)); |
| __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16()); |
| __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(65535)); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| __ mov(r2, Operand(65535)); |
| __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16()); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| |
| // Test 4. |
| __ mov(r0, Operand(4)); // Test number. |
| __ mov(r1, Operand(0)); |
| __ str(r1, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(-1)); |
| __ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer16()); |
| __ ldr(r3, MemOperand(sp, 0 * kPointerSize)); |
| __ mov(r2, Operand(65535)); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| __ mov(r2, Operand(-1)); |
| __ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer16()); |
| __ cmp(r3, r2); |
| __ b(ne, &exit); |
| |
| __ mov(r0, Operand(0)); // Success. |
| __ bind(&exit); |
| __ add(sp, sp, Operand(1 * kPointerSize)); |
| __ bx(lr); |
| |
| CodeDesc desc; |
| masm->GetCode(&desc); |
| Object* code = isolate->heap()->CreateCode( |
| desc, |
| Code::ComputeFlags(Code::STUB), |
| Handle<Code>())->ToObjectChecked(); |
| CHECK(code->IsCode()); |
| |
| // Call the function from C++. |
| F5 f = FUNCTION_CAST<F5>(Code::cast(code)->entry()); |
| CHECK_EQ(0, CALL_GENERATED_CODE(f, 0, 0, 0, 0, 0)); |
| } |
| |
| #undef __ |