| // Copyright 2014, VIXL authors |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are met: |
| // |
| // * Redistributions of source code must retain the above copyright notice, |
| // this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above copyright notice, |
| // this list of conditions and the following disclaimer in the documentation |
| // and/or other materials provided with the distribution. |
| // * Neither the name of ARM Limited nor the names of its contributors may be |
| // used to endorse or promote products derived from this software without |
| // specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND |
| // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE |
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "examples.h" |
| |
| #define __ masm-> |
| |
| void GenerateAdd4Double(MacroAssembler* masm) { |
| // double Add4Double(uint64_t a, double b, uint64_t c, double d) |
| // Argument locations: |
| // a -> x0 |
| // b -> d0 |
| // c -> x1 |
| // d -> d1 |
| |
| // Turn 'a' and 'c' into double values. |
| __ Ucvtf(d2, x0); |
| __ Ucvtf(d3, x1); |
| |
| // Add everything together. |
| __ Fadd(d0, d0, d1); |
| __ Fadd(d2, d2, d3); |
| __ Fadd(d0, d0, d2); |
| |
| // The return value is in d0. |
| __ Ret(); |
| } |
| |
| |
| #ifndef TEST_EXAMPLES |
| #ifdef VIXL_INCLUDE_SIMULATOR_AARCH64 |
| int main(void) { |
| MacroAssembler masm; |
| Decoder decoder; |
| Simulator simulator(&decoder); |
| |
| // Generate the code for the example function. |
| Label add4_double; |
| masm.Bind(&add4_double); |
| GenerateAdd4Double(&masm); |
| masm.FinalizeCode(); |
| |
| // Run the example function. |
| uint64_t a = 21; |
| double b = 987.3654; |
| uint64_t c = 4387; |
| double d = 36.698754; |
| simulator.WriteXRegister(0, a); |
| simulator.WriteDRegister(0, b); |
| simulator.WriteXRegister(1, c); |
| simulator.WriteDRegister(1, d); |
| simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&add4_double)); |
| // clang-format off |
| printf("%" PRIu64 " + %f + %" PRIu64 " + %f = %f\n", |
| a, b, c, d, simulator.ReadDRegister(0)); |
| // clang-format on |
| |
| return 0; |
| } |
| #else |
| // Without the simulator there is nothing to test. |
| int main(void) { return 0; } |
| #endif // VIXL_INCLUDE_SIMULATOR_AARCH64 |
| #endif // TEST_EXAMPLES |