1ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// Copyright 2013, ARM Limited 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 ARRAY_SIZE(Array) (sizeof(Array) / sizeof((Array)[0])) 30ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#define BUF_SIZE (4096) 31ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#define __ masm-> 32ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 33ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixlvoid GenerateSumArray(MacroAssembler* masm) { 34ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // uint32_t sum_array(uint8_t* array, uint32_t size) 35ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Argument locations: 36ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // array (pointer) -> x0 37ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // size -> x1 38ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 39ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl Label loop, end; 40ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 41ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Mov(x2, x0); 42ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Mov(w0, 0); 43ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 44ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // There's nothing to do if the array is empty. 45ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Cbz(w1, &end); 46ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 47ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Go through the array and sum the elements. 48ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Bind(&loop); 49ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 50ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Ldrb(w3, MemOperand(x2, 1, PostIndex)); // w3 = *(x2++) 51ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Add(w0, w0, w3); 52ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 53ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Sub(w1, w1, 1); 54ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Cbnz(w1, &loop); 55ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 56ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Bind(&end); 57ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ Ret(); 58ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl} 59ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 60ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 61ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#ifndef TEST_EXAMPLES 62ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixlint main(void) { 63ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Create and initialize the assembler and the simulator. 64ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl byte assm_buf[BUF_SIZE]; 65ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl MacroAssembler masm(assm_buf, BUF_SIZE); 66ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl Decoder decoder; 67ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl Simulator simulator(&decoder); 68ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 69ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Generate the code for the example function. 70ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl Label sum_array; 71ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl masm.Bind(&sum_array); 72ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl GenerateSumArray(&masm); 73ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl masm.FinalizeCode(); 74ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 75ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Run the example function. 76ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl uint8_t data[] = { 2, 45, 63, 7, 245, 38 }; 77ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl uintptr_t data_addr = reinterpret_cast<uintptr_t>(data); 78ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl simulator.set_xreg(0, data_addr); 79ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl simulator.set_xreg(1, ARRAY_SIZE(data)); 80ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl simulator.RunFrom(sum_array.target()); 81ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 82ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl unsigned int i; 83ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl for (i = 0; i < ARRAY_SIZE(data) - 1; ++i) { 84ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl printf("%d + ", data[i]); 85ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl } 86ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl printf("%d = %d\n", data[i], simulator.wreg(0)); 87ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 88ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl return 0; 89ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl} 90ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#endif 91