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
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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 "examples.h"
28
29
30// This is an interactive example, not to be used for testing.
31#ifndef TEST_EXAMPLES
32
33#define __ masm->
34
35// The aim is to let the user "play" with the debugger. Brk will trigger the
36// debugger shell.
37void GenerateBreak(MacroAssembler* masm) {
38  Label hop;
39  __ Brk();
40  __ Nop();
41  __ B(&hop);
42  __ Nop();
43  __ Bind(&hop);
44  __ Mov(x1, 123);
45  __ Mov(x2, 456);
46  __ Add(x0, x1, x2);
47  __ Ret();
48}
49
50
51#ifdef VIXL_INCLUDE_SIMULATOR_AARCH64
52int main(void) {
53  MacroAssembler masm;
54  Decoder decoder;
55  Debugger debugger(&decoder);
56
57  // Generate the code for the example function.
58  Label start;
59  masm.Bind(&start);
60  GenerateBreak(&masm);
61  masm.FinalizeCode();
62
63  // Run the example function.
64  debugger.RunFrom(masm.GetLabelAddress<Instruction*>(&start));
65  printf("Debugger example run\n");
66
67  return 0;
68}
69#else
70// Without the simulator there is nothing to test.
71int main(void) { return 0; }
72#endif  // VIXL_INCLUDE_SIMULATOR_AARCH64
73#endif  // TEST_EXAMPLES
74