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 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 55 int 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. 85 int main(void) { return 0; } 86 #endif // VIXL_INCLUDE_SIMULATOR_AARCH64 87 #endif // TEST_EXAMPLES 88
