1b78f13911bfe6eda303e91ef215c87a165aae8aeAlexandre Rames// Copyright 2016, VIXL authors 2ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// All rights reserved. 3ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// 4ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// Redistribution and use in source and binary forms, with or without 5ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// modification, are permitted provided that the following conditions are met: 6ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// 7ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// * Redistributions of source code must retain the above copyright notice, 8ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// this list of conditions and the following disclaimer. 9ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// * Redistributions in binary form must reproduce the above copyright notice, 10ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// this list of conditions and the following disclaimer in the documentation 11ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// and/or other materials provided with the distribution. 12ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// * Neither the name of ARM Limited nor the names of its contributors may be 13ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// used to endorse or promote products derived from this software without 14ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// specific prior written permission. 15ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// 16ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND 17ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 20ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 27ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#include "examples.h" 28ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 29ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#define __ masm-> 30ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 31ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixlvoid GenerateAbs(MacroAssembler* masm) { 3288c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // int32_t abs(int32_t x) 33ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Argument location: 3488c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // x -> r0 35ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 3688c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois __ Cmp(r0, 0); 3788c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // If r0 is negative, negate r0. 3888c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois __ Rsb(mi, r0, r0, 0); 3988c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois __ Bx(lr); 40ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl} 41ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 42ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 43ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#ifndef TEST_EXAMPLES 4488c46b84df005638546de5e4e965bdcc31352f48Pierre Langloisint main() { 4510dae1a549308bddc1931f29754d6a4459f70c9bJacob Bramley MacroAssembler masm(A32); 46ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Generate the code for the example function. 47ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl Label abs; 48ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl masm.Bind(&abs); 49ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl GenerateAbs(&masm); 50ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl masm.FinalizeCode(); 511e85b7f2e8ad2bfb233de29405aade635ed207cePierre Langlois#ifdef VIXL_INCLUDE_SIMULATOR_AARCH32 5288c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // There is no simulator defined for VIXL AArch32. 5388c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois printf("This example cannot be simulated\n"); 5488c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois#else 556a049f97861bd71c69d81f643e42308d28c5de31Alexandre Rames byte* code = masm.GetBuffer()->GetStartAddress<byte*>(); 56919e3fe28a5024c53ede42922092bbc32e89dcb8Alexandre Rames uint32_t code_size = masm.GetSizeOfCodeGenerated(); 5788c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois ExecutableMemory memory(code, code_size); 58ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Run the example function. 5988c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois int32_t (*abs_function)(int32_t) = 60963fa8ad3b32ffb62ab7804184e45c6627c080b4Georgia Kouveli memory.GetEntryPoint<int32_t (*)(int32_t)>(abs, 61963fa8ad3b32ffb62ab7804184e45c6627c080b4Georgia Kouveli masm.GetInstructionSetInUse()); 6288c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois int32_t input_value = -42; 6388c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois int32_t output_value = (*abs_function)(input_value); 6488c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois printf("native: abs(%d) = %d\n", input_value, output_value); 6588c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois#endif 66ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl return 0; 67ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl} 68c68cb64496485710cdb5b8480f8fee287058c93farmvixl#endif // TEST_EXAMPLES 69