1/* 2 * Copyright 2017, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12#pragma once 13 14#include <sel4bench/cpu/sel4bench.h> 15 16#define SEL4BENCH_READ_CCNT(var) do { \ 17 asm volatile("b 2f\n\ 18 1:mrc p15, 0, %[counter], c15, c12," SEL4BENCH_ARM1136_COUNTER_CCNT "\n\ 19 bx lr\n\ 20 2:sub r8, pc, #16\n\ 21 .word 0xe7f000f0" \ 22 : [counter] "=r"(var) \ 23 : \ 24 : "r8", "lr"); \ 25} while(0) 26