getting-started.cc revision 1bce007699e07bd855b7d194ca93fa5504a73eda
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 3188c46b84df005638546de5e4e965bdcc31352f48Pierre Langloisvoid GenerateDemo(MacroAssembler* masm) { 3288c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // uint32_t demo(uint32_t x) 33ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 3488c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // Load a constant in r1 using the literal pool. 3588c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois __ Ldr(r1, 0x12345678); 3688c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois __ And(r0, r0, r1); 3788c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois __ Bx(lr); 3888c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois} 39ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 40ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 4188c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois#ifndef TEST_EXAMPLES 4288c46b84df005638546de5e4e965bdcc31352f48Pierre Langloisint main() { 4388c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois MacroAssembler masm; 44ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Generate the code for the example function. 4588c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois Label demo; 4688c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // Tell the macro assembler that the label "demo" refer to the current 4788c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // location in the buffer. 4888c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois masm.Bind(&demo); 4988c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois GenerateDemo(&masm); 5088c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // Ensure that everything is generated and that the generated buffer is 5188c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois // ready to use. 52ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl masm.FinalizeCode(); 531e85b7f2e8ad2bfb233de29405aade635ed207cePierre Langlois#ifdef VIXL_INCLUDE_SIMULATOR_AARCH32 5488c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois// There is no simulator defined for VIXL AArch32. 5588c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois#else 566a049f97861bd71c69d81f643e42308d28c5de31Alexandre Rames byte* code = masm.GetBuffer()->GetStartAddress<byte*>(); 57919e3fe28a5024c53ede42922092bbc32e89dcb8Alexandre Rames uint32_t code_size = masm.GetSizeOfCodeGenerated(); 5888c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois ExecutableMemory memory(code, code_size); 59ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Run the example function. 601bce007699e07bd855b7d194ca93fa5504a73edaPierre Langlois uint32_t (*demo_function)(uint32_t) = memory.GetEntryPoint<uint32_t (*)( 611bce007699e07bd855b7d194ca93fa5504a73edaPierre Langlois uint32_t)>(demo, masm.GetInstructionSetInUse()); 6288c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois uint32_t input_value = 0x89abcdef; 6388c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois uint32_t output_value = (*demo_function)(input_value); 6488c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois printf("native: demo(0x%08x) = 0x%08x\n", input_value, output_value); 6588c46b84df005638546de5e4e965bdcc31352f48Pierre Langlois#endif 66ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl return 0; 67ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl} 68c68cb64496485710cdb5b8480f8fee287058c93farmvixl#endif // TEST_EXAMPLES 69