examples/add3-double.cc

// Copyright 2014, ARM Limited
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#include "examples.h"

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

void GenerateAdd3Double(MacroAssembler* masm) {
  // double add3_double(double x, double y, double z)
  //  Argument locations:
  //    x -> d0
  //    y -> d1
  //    z -> d2
  __ Fadd(d0, d0, d1);  // d0 <- x + y
  __ Fadd(d0, d0, d2);  // d0 <- d0 + z

  // The return value is already in d0.
  __ Ret();
}


#ifndef TEST_EXAMPLES
#ifdef VIXL_INCLUDE_SIMULATOR
int main(void) {
  // Create and initialize the assembler and the simulator.
  byte assm_buf[BUF_SIZE];
  MacroAssembler masm(assm_buf, BUF_SIZE);
  Decoder decoder;
  Simulator simulator(&decoder);

  // Generate the code for the example function.
  Label add3_double;
  masm.Bind(&add3_double);
  GenerateAdd3Double(&masm);
  masm.FinalizeCode();

  // Run the example function.
  double a = 498.36547;
  double b = 23.369;
  double c = 7964.697954;
  simulator.set_dreg(0, a);
  simulator.set_dreg(1, b);
  simulator.set_dreg(2, c);
  simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&add3_double));
  printf("%f + %f + %f = %f\n", a, b, c, simulator.dreg(0));

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