1 // Copyright 2014, ARM Limited
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 "examples.h"
28
29 #define BUF_SIZE (4096)
30 #define __ masm->
31
GenerateAdd3Double(MacroAssembler * masm)32 void GenerateAdd3Double(MacroAssembler* masm) {
33 // double add3_double(double x, double y, double z)
34 // Argument locations:
35 // x -> d0
36 // y -> d1
37 // z -> d2
38 __ Fadd(d0, d0, d1); // d0 <- x + y
39 __ Fadd(d0, d0, d2); // d0 <- d0 + z
40
41 // The return value is already in d0.
42 __ Ret();
43 }
44
45
46 #ifndef TEST_EXAMPLES
47 #ifdef USE_SIMULATOR
main(void)48 int main(void) {
49 // Create and initialize the assembler and the simulator.
50 byte assm_buf[BUF_SIZE];
51 MacroAssembler masm(assm_buf, BUF_SIZE);
52 Decoder decoder;
53 Simulator simulator(&decoder);
54
55 // Generate the code for the example function.
56 Label add3_double;
57 masm.Bind(&add3_double);
58 GenerateAdd3Double(&masm);
59 masm.FinalizeCode();
60
61 // Run the example function.
62 double a = 498.36547;
63 double b = 23.369;
64 double c = 7964.697954;
65 simulator.set_dreg(0, a);
66 simulator.set_dreg(1, b);
67 simulator.set_dreg(2, c);
68 simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&add3_double));
69 printf("%f + %f + %f = %f\n", a, b, c, simulator.dreg(0));
70
71 return 0;
72 }
73 #else
74 // Without the simulator there is nothing to test.
main(void)75 int main(void) { return 0; }
76 #endif // USE_SIMULATOR
77 #endif // TEST_EXAMPLES
78