source: mainline/kernel/test/fpu/mips2.c@ dff0a94

/*
 * Copyright (C) 2005 Ondrej Palkovsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <print.h>
#include <debug.h>
#include <panic.h>

#include <test.h>
#include <atomic.h>
#include <proc/thread.h>
#include <time/delay.h>

#include <arch.h>

#ifdef mips32

#define THREADS         50
#define DELAY           10000L
#define ATTEMPTS        5

static atomic_t threads_ok;
static waitq_t can_start;

static void testit1(void *data)
{
        int i;
        int arg __attribute__((aligned(16))) = (int)((unative_t) data);
        int after_arg __attribute__((aligned(16)));

        thread_detach(THREAD);
        
        waitq_sleep(&can_start);

        for (i = 0; i<ATTEMPTS; i++) {
                __asm__ volatile (
                        "mtc1 %0,$1"
                        :"=r"(arg)
                        );

                delay(DELAY);
                __asm__ volatile (
                        "mfc1 %0, $1"
                        :"=r"(after_arg)
                        );
                
                if(arg != after_arg)
                        panic("General reg tid%d: arg(%d) != %d\n", 
                              THREAD->tid, arg, after_arg);
        }

        atomic_inc(&threads_ok);
}

static void testit2(void *data)
{
        int i;
        int arg __attribute__((aligned(16))) = (int)((unative_t) data);
        int after_arg __attribute__((aligned(16)));

        thread_detach(THREAD);

        waitq_sleep(&can_start);

        for (i = 0; i<ATTEMPTS; i++) {
                __asm__ volatile (
                        "mtc1 %0,$1"
                        :"=r"(arg)
                        );

                scheduler();
                __asm__ volatile (
                        "mfc1 %0,$1"
                        :"=r"(after_arg)
                        );
                
                if(arg != after_arg)
                        panic("General reg tid%d: arg(%d) != %d\n", 
                              THREAD->tid, arg, after_arg);
        }

        atomic_inc(&threads_ok);
}


void test_mips2(void)
{
        thread_t *t;
        int i;

        waitq_initialize(&can_start);

        printf("MIPS test #1\n");
        printf("Creating %d threads... ", THREADS);

        for (i=0; i<THREADS/2; i++) {  
                if (!(t = thread_create(testit1, (void *)((unative_t)i*2), TASK, 0, "testit1")))
                        panic("could not create thread\n");
                thread_ready(t);
                if (!(t = thread_create(testit2, (void *)((unative_t)i*2+1), TASK, 0, "testit2")))
                        panic("could not create thread\n");
                thread_ready(t);
        }

        printf("ok\n");
        
        thread_sleep(1);
        waitq_wakeup(&can_start, WAKEUP_ALL);

        while (atomic_get(&threads_ok) != THREADS)
                ;
                
        printf("Test passed.\n");
}

#else

void test_mips2(void)
{
        printf("This test is availaible only on MIPS32 platform.\n");
}

#endif