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26
27#include "examples.h"
28
29#define BUF_SIZE (4096)
30#define __ masm->
31
32void GenerateAdd4Double(MacroAssembler* masm) {
33  // double Add4Double(uint64_t a, double b, uint64_t c, double d)
34  //  Argument locations:
35  //    a -> x0
36  //    b -> d0
37  //    c -> x1
38  //    d -> d1
39
40  // Turn 'a' and 'c' into double values.
41  __ Ucvtf(d2, x0);
42  __ Ucvtf(d3, x1);
43
44  // Add everything together.
45  __ Fadd(d0, d0, d1);
46  __ Fadd(d2, d2, d3);
47  __ Fadd(d0, d0, d2);
48
49  // The return value is in d0.
50  __ Ret();
51}
52
53
54#ifndef TEST_EXAMPLES
55int main(void) {
56  // Create and initialize the assembler and the simulator.
57  byte assm_buf[BUF_SIZE];
58  MacroAssembler masm(assm_buf, BUF_SIZE);
59  Decoder decoder;
60  Simulator simulator(&decoder);
61
62  // Generate the code for the example function.
63  Label add4_double;
64  masm.Bind(&add4_double);
65  GenerateAdd4Double(&masm);
66  masm.FinalizeCode();
67
68  // Run the example function.
69  uint64_t a = 21;
70  double b = 987.3654;
71  uint64_t c = 4387;
72  double d = 36.698754;
73  simulator.set_xreg(0, a);
74  simulator.set_dreg(0, b);
75  simulator.set_xreg(1, c);
76  simulator.set_dreg(1, d);
77  simulator.RunFrom(add4_double.target());
78  printf("%ld + %f + %ld + %f = %f\n", a, b, c, d, simulator.dreg(0));
79
80  return 0;
81}
82#endif
83