2013-09-23 08:06:58 +00:00
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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2015-11-16 16:45:02 +00:00
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// TODO(jochen): Remove this after the setting is turned on globally.
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#define V8_IMMINENT_DEPRECATION_WARNINGS
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2013-09-23 08:06:58 +00:00
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#include <stdlib.h>
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2014-06-03 08:12:43 +00:00
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#include "src/v8.h"
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2014-06-20 08:40:11 +00:00
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#include "test/cctest/cctest.h"
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2014-06-03 08:12:43 +00:00
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#include "src/macro-assembler.h"
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2014-06-20 08:40:11 +00:00
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2014-06-03 08:12:43 +00:00
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#include "src/arm/macro-assembler-arm.h"
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#include "src/arm/simulator-arm.h"
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2013-09-23 08:06:58 +00:00
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using namespace v8::internal;
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typedef void* (*F)(int x, int y, int p2, int p3, int p4);
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#define __ masm->
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static byte to_non_zero(int n) {
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return static_cast<unsigned>(n) % 255 + 1;
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}
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static bool all_zeroes(const byte* beg, const byte* end) {
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CHECK(beg);
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CHECK(beg <= end);
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while (beg < end) {
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if (*beg++ != 0)
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return false;
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}
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return true;
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}
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TEST(CopyBytes) {
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CcTest::InitializeVM();
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2015-11-23 12:38:18 +00:00
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Isolate* isolate = CcTest::i_isolate();
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2013-09-23 08:06:58 +00:00
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HandleScope handles(isolate);
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const int data_size = 1 * KB;
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size_t act_size;
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// Allocate two blocks to copy data between.
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2014-06-30 13:25:46 +00:00
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byte* src_buffer =
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static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
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2013-09-23 08:06:58 +00:00
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CHECK(src_buffer);
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CHECK(act_size >= static_cast<size_t>(data_size));
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2014-06-30 13:25:46 +00:00
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byte* dest_buffer =
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static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
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2013-09-23 08:06:58 +00:00
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CHECK(dest_buffer);
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CHECK(act_size >= static_cast<size_t>(data_size));
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// Storage for R0 and R1.
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byte* r0_;
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byte* r1_;
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2015-11-25 14:23:37 +00:00
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MacroAssembler assembler(isolate, NULL, 0,
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v8::internal::CodeObjectRequired::kYes);
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2013-09-23 08:06:58 +00:00
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MacroAssembler* masm = &assembler;
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// Code to be generated: The stuff in CopyBytes followed by a store of R0 and
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// R1, respectively.
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__ CopyBytes(r0, r1, r2, r3);
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__ mov(r2, Operand(reinterpret_cast<int>(&r0_)));
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__ mov(r3, Operand(reinterpret_cast<int>(&r1_)));
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__ str(r0, MemOperand(r2));
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__ str(r1, MemOperand(r3));
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__ bx(lr);
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CodeDesc desc;
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masm->GetCode(&desc);
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2014-04-16 11:38:56 +00:00
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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2013-09-23 08:06:58 +00:00
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2014-04-16 11:38:56 +00:00
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F f = FUNCTION_CAST<F>(code->entry());
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2013-09-23 08:06:58 +00:00
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// Initialise source data with non-zero bytes.
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for (int i = 0; i < data_size; i++) {
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src_buffer[i] = to_non_zero(i);
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}
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const int fuzz = 11;
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for (int size = 0; size < 600; size++) {
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for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) {
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for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) {
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memset(dest_buffer, 0, data_size);
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CHECK(dest + size < dest_buffer + data_size);
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2015-11-23 08:09:34 +00:00
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(void)CALL_GENERATED_CODE(isolate, f, reinterpret_cast<int>(src),
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reinterpret_cast<int>(dest), size, 0, 0);
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2013-09-23 08:06:58 +00:00
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// R0 and R1 should point at the first byte after the copied data.
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CHECK_EQ(src + size, r0_);
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CHECK_EQ(dest + size, r1_);
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// Check that we haven't written outside the target area.
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CHECK(all_zeroes(dest_buffer, dest));
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CHECK(all_zeroes(dest + size, dest_buffer + data_size));
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// Check the target area.
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CHECK_EQ(0, memcmp(src, dest, size));
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}
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}
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}
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// Check that the source data hasn't been clobbered.
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for (int i = 0; i < data_size; i++) {
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CHECK(src_buffer[i] == to_non_zero(i));
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}
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}
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2013-11-08 17:35:58 +00:00
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typedef int (*F5)(void*, void*, void*, void*, void*);
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TEST(LoadAndStoreWithRepresentation) {
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// Allocate an executable page of memory.
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size_t actual_size;
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2014-06-30 13:25:46 +00:00
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byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
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Assembler::kMinimalBufferSize, &actual_size, true));
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2013-11-08 17:35:58 +00:00
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CHECK(buffer);
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Isolate* isolate = CcTest::i_isolate();
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HandleScope handles(isolate);
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2015-11-25 14:23:37 +00:00
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MacroAssembler assembler(isolate, buffer, static_cast<int>(actual_size),
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v8::internal::CodeObjectRequired::kYes);
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2013-11-08 17:35:58 +00:00
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MacroAssembler* masm = &assembler; // Create a pointer for the __ macro.
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__ sub(sp, sp, Operand(1 * kPointerSize));
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Label exit;
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// Test 1.
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__ mov(r0, Operand(1)); // Test number.
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__ mov(r1, Operand(0));
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__ str(r1, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(-1));
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__ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8());
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__ ldr(r3, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(255));
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__ cmp(r3, r2);
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__ b(ne, &exit);
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__ mov(r2, Operand(255));
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__ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger8());
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__ cmp(r3, r2);
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__ b(ne, &exit);
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// Test 2.
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__ mov(r0, Operand(2)); // Test number.
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__ mov(r1, Operand(0));
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__ str(r1, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(-1));
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__ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer8());
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__ ldr(r3, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(255));
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__ cmp(r3, r2);
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__ b(ne, &exit);
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__ mov(r2, Operand(-1));
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__ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer8());
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__ cmp(r3, r2);
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__ b(ne, &exit);
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// Test 3.
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__ mov(r0, Operand(3)); // Test number.
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__ mov(r1, Operand(0));
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__ str(r1, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(-1));
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__ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16());
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__ ldr(r3, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(65535));
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__ cmp(r3, r2);
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__ b(ne, &exit);
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__ mov(r2, Operand(65535));
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__ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::UInteger16());
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__ cmp(r3, r2);
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__ b(ne, &exit);
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// Test 4.
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__ mov(r0, Operand(4)); // Test number.
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__ mov(r1, Operand(0));
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__ str(r1, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(-1));
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__ Store(r2, MemOperand(sp, 0 * kPointerSize), Representation::Integer16());
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__ ldr(r3, MemOperand(sp, 0 * kPointerSize));
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__ mov(r2, Operand(65535));
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__ cmp(r3, r2);
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__ b(ne, &exit);
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__ mov(r2, Operand(-1));
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__ Load(r3, MemOperand(sp, 0 * kPointerSize), Representation::Integer16());
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__ cmp(r3, r2);
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__ b(ne, &exit);
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__ mov(r0, Operand(0)); // Success.
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__ bind(&exit);
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__ add(sp, sp, Operand(1 * kPointerSize));
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__ bx(lr);
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CodeDesc desc;
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masm->GetCode(&desc);
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2014-04-16 11:38:56 +00:00
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Handle<Code> code = isolate->factory()->NewCode(
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desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
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2013-11-08 17:35:58 +00:00
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// Call the function from C++.
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2014-04-16 11:38:56 +00:00
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F5 f = FUNCTION_CAST<F5>(code->entry());
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2015-11-23 08:09:34 +00:00
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CHECK(!CALL_GENERATED_CODE(isolate, f, 0, 0, 0, 0, 0));
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2013-11-08 17:35:58 +00:00
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}
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2013-09-23 08:06:58 +00:00
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#undef __
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