v8/test/cctest/test-fuzz-a64.cc
jochen@chromium.org 597a4b4dc1 A64: Make the Decoder a template
This will allow for replacing the dispatcher with a concrete decoder
visitor.

BUG=none
R=ulan@chromium.org, rodolph.perfetta@arm.com
LOG=n

Review URL: https://codereview.chromium.org/181253002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19562 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-02-26 12:01:05 +00:00

72 lines
2.7 KiB
C++

// 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 ARM Limited 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 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 "cctest.h"
#include "a64/decoder-a64.h"
#include "a64/decoder-a64-inl.h"
#include "a64/disasm-a64.h"
using namespace v8::internal;
TEST(FUZZ_decoder) {
// Feed noise into the decoder to check that it doesn't crash.
// 43 million = ~1% of the instruction space.
static const int instruction_count = 43 * 1024 * 1024;
uint16_t seed[3] = {1, 2, 3};
seed48(seed);
Decoder<DispatchingDecoderVisitor> decoder;
Instruction buffer[kInstructionSize];
for (int i = 0; i < instruction_count; i++) {
uint32_t instr = mrand48();
buffer->SetInstructionBits(instr);
decoder.Decode(buffer);
}
}
TEST(FUZZ_disasm) {
// Feed noise into the disassembler to check that it doesn't crash.
// 9 million = ~0.2% of the instruction space.
static const int instruction_count = 9 * 1024 * 1024;
uint16_t seed[3] = {42, 43, 44};
seed48(seed);
Decoder<DispatchingDecoderVisitor> decoder;
Disassembler disasm;
Instruction buffer[kInstructionSize];
decoder.AppendVisitor(&disasm);
for (int i = 0; i < instruction_count; i++) {
uint32_t instr = mrand48();
buffer->SetInstructionBits(instr);
decoder.Decode(buffer);
}
}