add4-double.cc revision ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dc8
1// Copyright 2013, 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 32void GenerateAdd4Double(MacroAssembler* masm) { 33 // double Add4Double(uint64_t a, double b, uint64_t c, double d) 34 // Argument locations: 35 // a -> x0 36 // b -> d0 37 // c -> x1 38 // d -> d1 39 40 // Turn 'a' and 'c' into double values. 41 __ Ucvtf(d2, x0); 42 __ Ucvtf(d3, x1); 43 44 // Add everything together. 45 __ Fadd(d0, d0, d1); 46 __ Fadd(d2, d2, d3); 47 __ Fadd(d0, d0, d2); 48 49 // The return value is in d0. 50 __ Ret(); 51} 52 53 54#ifndef TEST_EXAMPLES 55int main(void) { 56 // Create and initialize the assembler and the simulator. 57 byte assm_buf[BUF_SIZE]; 58 MacroAssembler masm(assm_buf, BUF_SIZE); 59 Decoder decoder; 60 Simulator simulator(&decoder); 61 62 // Generate the code for the example function. 63 Label add4_double; 64 masm.Bind(&add4_double); 65 GenerateAdd4Double(&masm); 66 masm.FinalizeCode(); 67 68 // Run the example function. 69 uint64_t a = 21; 70 double b = 987.3654; 71 uint64_t c = 4387; 72 double d = 36.698754; 73 simulator.set_xreg(0, a); 74 simulator.set_dreg(0, b); 75 simulator.set_xreg(1, c); 76 simulator.set_dreg(1, d); 77 simulator.RunFrom(add4_double.target()); 78 printf("%ld + %f + %ld + %f = %f\n", a, b, c, d, simulator.dreg(0)); 79 80 return 0; 81} 82#endif 83