mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
127 lines
2.6 KiB
C
127 lines
2.6 KiB
C
/* Copyright (C) 2014-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <sys/prctl.h>
|
|
|
|
#if __mips_fpr != 0 || _MIPS_SPFPSET != 16
|
|
# error This test requires -mfpxx -mno-odd-spreg
|
|
#endif
|
|
|
|
/* This test verifies that mode changes do not clobber register state
|
|
in other threads. */
|
|
|
|
static volatile int finished;
|
|
static int mode[6] =
|
|
{
|
|
0,
|
|
PR_FP_MODE_FR,
|
|
PR_FP_MODE_FR | PR_FP_MODE_FRE,
|
|
PR_FP_MODE_FR,
|
|
0,
|
|
PR_FP_MODE_FR | PR_FP_MODE_FRE
|
|
};
|
|
|
|
static void *
|
|
thread_function (void * arg __attribute__ ((unused)))
|
|
{
|
|
volatile int i = 0;
|
|
volatile float f = 0.0;
|
|
volatile double d = 0.0;
|
|
|
|
while (!finished)
|
|
{
|
|
if ((float) i != f || (double) i != d)
|
|
{
|
|
printf ("unexpected value: i(%d) f(%f) d(%f)\n", i, f, d);
|
|
exit (1);
|
|
}
|
|
|
|
if (i == 100)
|
|
{
|
|
i = 0;
|
|
f = 0.0;
|
|
d = 0.0;
|
|
}
|
|
|
|
i++;
|
|
f++;
|
|
d++;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
int count = sysconf (_SC_NPROCESSORS_ONLN);
|
|
if (count <= 0)
|
|
count = 1;
|
|
count *= 4;
|
|
|
|
pthread_t th[count];
|
|
int i;
|
|
int result = 0;
|
|
|
|
for (i = 0; i < count; ++i)
|
|
if (pthread_create (&th[i], NULL, thread_function, 0) != 0)
|
|
{
|
|
printf ("creation of thread %d failed\n", i);
|
|
exit (1);
|
|
}
|
|
|
|
for (i = 0 ; i < 1000000 ; i++)
|
|
{
|
|
if (prctl (PR_SET_FP_MODE, mode[i % 6]) != 0
|
|
&& errno != ENOTSUP)
|
|
{
|
|
printf ("prctl PR_SET_FP_MODE failed: %m\n");
|
|
exit (1);
|
|
}
|
|
}
|
|
|
|
finished = 1;
|
|
|
|
for (i = 0; i < count; ++i)
|
|
{
|
|
void *v;
|
|
if (pthread_join (th[i], &v) != 0)
|
|
{
|
|
printf ("join of thread %d failed\n", i);
|
|
result = 1;
|
|
}
|
|
else if (v != NULL)
|
|
{
|
|
printf ("join %d successful, but child failed\n", i);
|
|
result = 1;
|
|
}
|
|
else
|
|
printf ("join %d successful\n", i);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../../test-skeleton.c"
|