Home | History | Annotate | Download | only in cctest
      1 // Copyright 2013 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are met:
      4 //
      5 //   * Redistributions of source code must retain the above copyright notice,
      6 //     this list of conditions and the following disclaimer.
      7 //   * Redistributions in binary form must reproduce the above copyright notice,
      8 //     this list of conditions and the following disclaimer in the documentation
      9 //     and/or other materials provided with the distribution.
     10 //   * Neither the name of ARM Limited nor the names of its contributors may be
     11 //     used to endorse or promote products derived from this software without
     12 //     specific prior written permission.
     13 //
     14 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
     15 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
     18 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     19 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     20 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     21 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     22 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24 
     25 #include <stdlib.h>
     26 #include "test/cctest/cctest.h"
     27 
     28 #include "src/arm64/decoder-arm64.h"
     29 #include "src/arm64/decoder-arm64-inl.h"
     30 #include "src/arm64/disasm-arm64.h"
     31 
     32 using namespace v8::internal;
     33 
     34 TEST(FUZZ_decoder) {
     35   // Feed noise into the decoder to check that it doesn't crash.
     36   // 43 million = ~1% of the instruction space.
     37   static const int instruction_count = 43 * 1024 * 1024;
     38 
     39   uint16_t seed[3] = {1, 2, 3};
     40   seed48(seed);
     41 
     42   Decoder<DispatchingDecoderVisitor> decoder;
     43   Instruction buffer[kInstructionSize];
     44 
     45   for (int i = 0; i < instruction_count; i++) {
     46     uint32_t instr = static_cast<uint32_t>(mrand48());
     47     buffer->SetInstructionBits(instr);
     48     decoder.Decode(buffer);
     49   }
     50 }
     51 
     52 
     53 TEST(FUZZ_disasm) {
     54   // Feed noise into the disassembler to check that it doesn't crash.
     55   // 9 million = ~0.2% of the instruction space.
     56   static const int instruction_count = 9 * 1024 * 1024;
     57 
     58   uint16_t seed[3] = {42, 43, 44};
     59   seed48(seed);
     60 
     61   Decoder<DispatchingDecoderVisitor> decoder;
     62   DisassemblingDecoder disasm;
     63   Instruction buffer[kInstructionSize];
     64 
     65   decoder.AppendVisitor(&disasm);
     66   for (int i = 0; i < instruction_count; i++) {
     67     uint32_t instr = static_cast<uint32_t>(mrand48());
     68     buffer->SetInstructionBits(instr);
     69     decoder.Decode(buffer);
     70   }
     71 }
     72