1 // Copyright 2023, VIXL authors
2 // All rights reserved.
3 //
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5 // modification, are permitted provided that the following conditions are met:
6 //
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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
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13 // used to endorse or promote products derived from this software without
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15 //
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25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27 #include "examples.h"
28
29 #include "aarch64/disasm-aarch64.h"
30 #include "aarch64/macro-assembler-aarch64.h"
31 #include "aarch64/simulator-aarch64.h"
32
33 using namespace vixl;
34 using namespace vixl::aarch64;
35
36 #define __ masm->
37
GenerateDebugExample(MacroAssembler * masm)38 void GenerateDebugExample(MacroAssembler* masm) {
39 // Create a breakpoint here to break into the debugger.
40 __ Brk(0);
41
42 // Do some arithmetic.
43 __ Add(x1, x0, 5);
44 __ Mov(x2, 2);
45 __ Sub(x3, x1, x2);
46
47 __ Ret();
48 }
49
50 #ifndef TEST_EXAMPLES
51 #ifdef VIXL_INCLUDE_SIMULATOR_AARCH64
52
main(void)53 int main(void) {
54 MacroAssembler masm;
55
56 // Generate the code for the example function.
57 Label debug_example;
58 masm.Bind(&debug_example);
59 GenerateDebugExample(&masm);
60 masm.FinalizeCode();
61
62 Instruction* start = masm.GetLabelAddress<Instruction*>(&debug_example);
63
64 // Disassemble the generated code.
65 PrintDisassembler disassembler(stdout);
66 disassembler.DisassembleBuffer(start, masm.GetSizeOfCodeGenerated());
67
68 Decoder decoder;
69 Simulator simulator(&decoder);
70
71 simulator.SetColouredTrace(true);
72 simulator.SetDebuggerEnabled(true);
73
74 int32_t input_a = 1;
75 int32_t input_b = 2;
76 simulator.WriteWRegister(0, input_a);
77 simulator.WriteWRegister(1, input_b);
78 simulator.RunFrom(start);
79 printf("The final result is %ld\n", simulator.ReadXRegister(3));
80
81 return 0;
82 }
83
84 #else
main(void)85 int main(void) { return 0; }
86 #endif // VIXL_INCLUDE_SIMULATOR_AARCH64
87 #endif // TEST_EXAMPLES
88