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      1 // Copyright 2014, VIXL authors
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are met:
      6 //
      7 //   * Redistributions of source code must retain the above copyright notice,
      8 //     this list of conditions and the following disclaimer.
      9 //   * Redistributions in binary form must reproduce the above copyright notice,
     10 //     this list of conditions and the following disclaimer in the documentation
     11 //     and/or other materials provided with the distribution.
     12 //   * Neither the name of ARM Limited nor the names of its contributors may be
     13 //     used to endorse or promote products derived from this software without
     14 //     specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
     17 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     18 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
     20 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     22 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     23 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26 
     27 #include "aarch64/macro-assembler-aarch64.h"
     28 #include "aarch64/simulator-aarch64.h"
     29 
     30 #define __ masm->
     31 
     32 using namespace vixl::aarch64;
     33 
     34 void GenerateDemoFunction(MacroAssembler *masm) {
     35   // uint64_t demo_function(uint64_t x)
     36   __ Ldr(x1, 0x1122334455667788);
     37   __ And(x0, x0, x1);
     38   __ Ret();
     39 }
     40 
     41 
     42 #ifndef TEST_EXAMPLES
     43 #ifdef VIXL_INCLUDE_SIMULATOR_AARCH64
     44 int main() {
     45   MacroAssembler masm;
     46   Decoder decoder;
     47   Simulator simulator(&decoder);
     48 
     49   Label demo_function;
     50   masm.Bind(&demo_function);
     51   GenerateDemoFunction(&masm);
     52   masm.FinalizeCode();
     53 
     54   simulator.WriteXRegister(0, 0x8899aabbccddeeff);
     55   simulator.RunFrom(masm.GetLabelAddress<Instruction *>(&demo_function));
     56   printf("x0 = %" PRIx64 "\n", simulator.ReadXRegister(0));
     57 
     58   return 0;
     59 }
     60 #else
     61 // Without the simulator there is nothing to test.
     62 int main(void) { return 0; }
     63 #endif  // VIXL_INCLUDE_SIMULATOR_AARCH64
     64 #endif  // TEST_EXAMPLES
     65