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 "a64/macro-assembler-a64.h" 28ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl#include "a64/instructions-a64.h" 29bc4afbd2754e20d14114e4ba83f9035b26ab701dSerban Constantinescu#include "globals-vixl.h" 30ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 31ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixlusing namespace vixl; 32ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 33ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixlstatic const unsigned kDefaultInstructionCount = 100000; 34ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 35ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// This program focuses on emitting simple instructions. 36ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// 37ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// This code will emit a given number of 'add x0, x1, x2' in a fixed size 38ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// buffer, looping over the buffer if necessary. This code therefore focuses 39ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl// on Emit and Operand. 40ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixlint main(int argc, char* argv[]) { 41ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl unsigned instructions = 0; 42ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 43ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl switch (argc) { 44ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl case 1: instructions = kDefaultInstructionCount; break; 45ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl case 2: instructions = atoi(argv[1]); break; 46ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl default: 47ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl printf("Usage: %s [#instructions]\n", argv[0]); 48ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl exit(1); 49ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl } 50ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 51ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl const unsigned buffer_size = 256 * KBytes; 52ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl // Emitting on the last word of the buffer will trigger an assert. 53ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl const unsigned buffer_instruction_count = buffer_size / kInstructionSize - 1; 54ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 55ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl byte* assm_buffer = new byte[buffer_size]; 56ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl MacroAssembler* masm = new MacroAssembler(assm_buffer, buffer_size); 57ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 58ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl #define __ masm-> 59ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 60ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl unsigned rounds = instructions / buffer_instruction_count; 61ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl for (unsigned i = 0; i < rounds; ++i) { 62ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl for (unsigned j = 0; j < buffer_instruction_count; ++j) { 63ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ add(x0, x1, Operand(x2)); 64ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl } 65ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl masm->Reset(); 66ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl } 67ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 68ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl unsigned remaining = instructions % buffer_instruction_count; 69ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl for (unsigned i = 0; i < remaining; ++i) { 70ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl __ add(x0, x1, Operand(x2)); 71ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl } 72ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 73ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl delete masm; 74ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl delete assm_buffer; 75ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl 76ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl return 0; 77ad96eda8944ab1c1ba55715c50d9d6f0a3ed1dcarmvixl} 78