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825d6eba7c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <1612763186-18161-33-git-send-email-tsimpson@quicinc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/*
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* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <pthread.h>
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/* Using volatile because we are testing atomics */
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static inline int atomic_inc32(volatile int *x)
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{
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int old, dummy;
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__asm__ __volatile__(
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"1: %0 = memw_locked(%2)\n\t"
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" %1 = add(%0, #1)\n\t"
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" memw_locked(%2, p0) = %1\n\t"
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" if (!p0) jump 1b\n\t"
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: "=&r"(old), "=&r"(dummy)
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: "r"(x)
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: "p0", "memory");
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return old;
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}
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/* Using volatile because we are testing atomics */
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static inline long long atomic_inc64(volatile long long *x)
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{
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long long old, dummy;
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__asm__ __volatile__(
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"1: %0 = memd_locked(%2)\n\t"
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" %1 = #1\n\t"
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" %1 = add(%0, %1)\n\t"
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" memd_locked(%2, p0) = %1\n\t"
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" if (!p0) jump 1b\n\t"
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: "=&r"(old), "=&r"(dummy)
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: "r"(x)
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: "p0", "memory");
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return old;
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}
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/* Using volatile because we are testing atomics */
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static inline int atomic_dec32(volatile int *x)
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{
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int old, dummy;
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__asm__ __volatile__(
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"1: %0 = memw_locked(%2)\n\t"
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" %1 = add(%0, #-1)\n\t"
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" memw_locked(%2, p0) = %1\n\t"
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" if (!p0) jump 1b\n\t"
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: "=&r"(old), "=&r"(dummy)
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: "r"(x)
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: "p0", "memory");
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return old;
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}
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/* Using volatile because we are testing atomics */
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static inline long long atomic_dec64(volatile long long *x)
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{
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long long old, dummy;
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__asm__ __volatile__(
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"1: %0 = memd_locked(%2)\n\t"
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" %1 = #-1\n\t"
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" %1 = add(%0, %1)\n\t"
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" memd_locked(%2, p0) = %1\n\t"
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" if (!p0) jump 1b\n\t"
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: "=&r"(old), "=&r"(dummy)
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: "r"(x)
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: "p0", "memory");
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return old;
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}
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#define LOOP_CNT 1000
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/* Using volatile because we are testing atomics */
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volatile int tick32 = 1;
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/* Using volatile because we are testing atomics */
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volatile long long tick64 = 1;
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int err;
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void *thread1_func(void *arg)
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{
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int i;
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for (i = 0; i < LOOP_CNT; i++) {
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atomic_inc32(&tick32);
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atomic_dec64(&tick64);
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}
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return NULL;
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}
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void *thread2_func(void *arg)
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{
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int i;
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for (i = 0; i < LOOP_CNT; i++) {
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atomic_dec32(&tick32);
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atomic_inc64(&tick64);
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}
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return NULL;
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}
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void test_pthread(void)
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{
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pthread_t tid1, tid2;
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pthread_create(&tid1, NULL, thread1_func, "hello1");
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pthread_create(&tid2, NULL, thread2_func, "hello2");
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pthread_join(tid1, NULL);
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pthread_join(tid2, NULL);
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if (tick32 != 1) {
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printf("ERROR: tick32 %d != 1\n", tick32);
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err++;
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}
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if (tick64 != 1) {
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printf("ERROR: tick64 %lld != 1\n", tick64);
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err++;
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}
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}
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int main(int argc, char **argv)
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{
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test_pthread();
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puts(err ? "FAIL" : "PASS");
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return err;
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}
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