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 "examples.h" 28 29 #define __ masm-> 30 31 void GenerateAdd3Double(MacroAssembler* masm) { 32 // double add3_double(double x, double y, double z) 33 // Argument locations: 34 // x -> d0 35 // y -> d1 36 // z -> d2 37 __ Fadd(d0, d0, d1); // d0 <- x + y 38 __ Fadd(d0, d0, d2); // d0 <- d0 + z 39 40 // The return value is already in d0. 41 __ Ret(); 42 } 43 44 45 #ifndef TEST_EXAMPLES 46 #ifdef VIXL_INCLUDE_SIMULATOR_AARCH64 47 int main(void) { 48 MacroAssembler masm; 49 Decoder decoder; 50 Simulator simulator(&decoder); 51 52 // Generate the code for the example function. 53 Label add3_double; 54 masm.Bind(&add3_double); 55 GenerateAdd3Double(&masm); 56 masm.FinalizeCode(); 57 58 // Run the example function. 59 double a = 498.36547; 60 double b = 23.369; 61 double c = 7964.697954; 62 simulator.WriteDRegister(0, a); 63 simulator.WriteDRegister(1, b); 64 simulator.WriteDRegister(2, c); 65 simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&add3_double)); 66 printf("%f + %f + %f = %f\n", a, b, c, simulator.ReadDRegister(0)); 67 68 return 0; 69 } 70 #else 71 // Without the simulator there is nothing to test. 72 int main(void) { return 0; } 73 #endif // VIXL_INCLUDE_SIMULATOR_AARCH64 74 #endif // TEST_EXAMPLES 75