examples/getting-started.cc

// Copyright 2014, ARM Limited
// All rights reserved.
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// modification, are permitted provided that the following conditions are met:
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#include "a64/macro-assembler-a64.h"
#include "a64/simulator-a64.h"

#define BUF_SIZE (4096)
#define __ masm->

using namespace vixl;

void GenerateDemoFunction(MacroAssembler *masm) {
  // uint64_t demo_function(uint64_t x)
  __ Ldr(x1, 0x1122334455667788);
  __ And(x0, x0, x1);
  __ Ret();
}


#ifndef TEST_EXAMPLES
#ifdef VIXL_INCLUDE_SIMULATOR
int main() {
  byte assm_buf[BUF_SIZE];
  MacroAssembler masm(assm_buf, BUF_SIZE);
  Decoder decoder;
  Simulator simulator(&decoder);

  Label demo_function;
  masm.Bind(&demo_function);
  GenerateDemoFunction(&masm);
  masm.FinalizeCode();

  simulator.set_xreg(0, 0x8899aabbccddeeff);
  simulator.RunFrom(masm.GetLabelAddress<Instruction *>(&demo_function));
  printf("x0 = %" PRIx64 "\n", simulator.xreg(0));

  return 0;
}
#else
// Without the simulator there is nothing to test.
int main(void) { return 0; }
#endif  // VIXL_INCLUDE_SIMULATOR
#endif  // TEST_EXAMPLES