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 31void GenerateAdd4Double(MacroAssembler* masm) { 32 // double Add4Double(uint64_t a, double b, uint64_t c, double d) 33 // Argument locations: 34 // a -> x0 35 // b -> d0 36 // c -> x1 37 // d -> d1 38 39 // Turn 'a' and 'c' into double values. 40 __ Ucvtf(d2, x0); 41 __ Ucvtf(d3, x1); 42 43 // Add everything together. 44 __ Fadd(d0, d0, d1); 45 __ Fadd(d2, d2, d3); 46 __ Fadd(d0, d0, d2); 47 48 // The return value is in d0. 49 __ Ret(); 50} 51 52 53#ifndef TEST_EXAMPLES 54#ifdef VIXL_INCLUDE_SIMULATOR_AARCH64 55int main(void) { 56 MacroAssembler masm; 57 Decoder decoder; 58 Simulator simulator(&decoder); 59 60 // Generate the code for the example function. 61 Label add4_double; 62 masm.Bind(&add4_double); 63 GenerateAdd4Double(&masm); 64 masm.FinalizeCode(); 65 66 // Run the example function. 67 uint64_t a = 21; 68 double b = 987.3654; 69 uint64_t c = 4387; 70 double d = 36.698754; 71 simulator.WriteXRegister(0, a); 72 simulator.WriteDRegister(0, b); 73 simulator.WriteXRegister(1, c); 74 simulator.WriteDRegister(1, d); 75 simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&add4_double)); 76 // clang-format off 77 printf("%" PRIu64 " + %f + %" PRIu64 " + %f = %f\n", 78 a, b, c, d, simulator.ReadDRegister(0)); 79 // clang-format on 80 81 return 0; 82} 83#else 84// Without the simulator there is nothing to test. 85int main(void) { return 0; } 86#endif // VIXL_INCLUDE_SIMULATOR_AARCH64 87#endif // TEST_EXAMPLES 88