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
22 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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 "aarch64/macro-assembler-aarch64.h"
28 #include "aarch64/simulator-aarch64.h"
29
30 #include "executable-memory.h"
31
32 using namespace vixl;
33 using namespace vixl::aarch64;
34
35 #define __ masm->
36
37 using namespace vixl::aarch64;
38
GenerateDemoFunction(MacroAssembler * masm)39 void GenerateDemoFunction(MacroAssembler *masm) {
40 // uint64_t demo_function(uint64_t x)
41 __ Ldr(x1, 0x1122334455667788);
42 __ And(x0, x0, x1);
43 __ Ret();
44 }
45
46
47 #ifndef TEST_EXAMPLES
main()48 int main() {
49 MacroAssembler masm;
50
51 Label demo;
52 masm.Bind(&demo);
53 GenerateDemoFunction(&masm);
54 masm.FinalizeCode();
55
56 #ifdef VIXL_INCLUDE_SIMULATOR_AARCH64
57 Decoder decoder;
58 Simulator simulator(&decoder);
59
60 simulator.WriteXRegister(0, 0x8899aabbccddeeff);
61 simulator.RunFrom(masm.GetLabelAddress<Instruction *>(&demo));
62 printf("x0 = %" PRIx64 "\n", simulator.ReadXRegister(0));
63
64 #else
65 byte* code = masm.GetBuffer()->GetStartAddress<byte*>();
66 size_t code_size = masm.GetSizeOfCodeGenerated();
67 ExecutableMemory memory(code, code_size);
68 // Run the example function.
69 uint64_t (*demo_function)(uint64_t) =
70 memory.GetEntryPoint<uint64_t (*)(uint64_t)>(demo);
71 uint64_t input_value = 0x8899aabbccddeeff;
72 uint64_t output_value = (*demo_function)(input_value);
73 printf("native: demo(0x%016lx) = 0x%016lx\n", input_value, output_value);
74 #endif // VIXL_INCLUDE_SIMULATOR_AARCH64
75
76 return 0;
77 }
78 #endif // TEST_EXAMPLES
79