diff options
Diffstat (limited to 'libsyscounter/arm_sys_counter.c')
-rw-r--r-- | libsyscounter/arm_sys_counter.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/libsyscounter/arm_sys_counter.c b/libsyscounter/arm_sys_counter.c deleted file mode 100644 index 90da6fc..0000000 --- a/libsyscounter/arm_sys_counter.c +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright (c) 2014, Linaro Limited - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * liABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ -#include <arm_sys_counter.h> - -#define WORD_SIZE 32 - -uint64_t arm_sys_counter_get_counter(void) -{ - uint64_t val; - -#ifdef __aarch64__ - - asm volatile("mrs %0, cntvct_el0" : "=r"(val)); - -#else - - uint32_t cntvct_low, cntvct_high; - __asm__ volatile("mrrc p15, 1, %0, %1, c14" - : "=r"(cntvct_low), "=r"(cntvct_high)); - - val = cntvct_low | ((uint64_t)cntvct_high << WORD_SIZE); - -#endif - - return val; -} - - -uint32_t arm_sys_counter_get_frequency(void) -{ - uint32_t frq; - -#ifdef __aarch64__ - - asm volatile("mrs %0, cntfrq_el0" : "=r"(frq)); - -#else - - asm volatile("mrc p15, 0, %0, c14, c0, 0" : "=r"(frq)); - -#endif - - return frq; -} |