84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
162 lines
4.6 KiB
C
162 lines
4.6 KiB
C
/* $NetBSD: atomic_init_testset.c,v 1.9 2013/08/21 03:00:56 matt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2008 The NetBSD Foundation, Inc.
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* libc glue for atomic operations where the hardware does not provide
|
|
* compare-and-swap. It's assumed that this will only be used on 32-bit
|
|
* platforms.
|
|
*
|
|
* This should be compiled with '-fno-reorder-blocks -fomit-frame-pointer'
|
|
* if using gcc.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: atomic_init_testset.c,v 1.9 2013/08/21 03:00:56 matt Exp $");
|
|
|
|
#include "atomic_op_namespace.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/atomic.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/ras.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <string.h>
|
|
|
|
#define I2 __SIMPLELOCK_UNLOCKED, __SIMPLELOCK_UNLOCKED,
|
|
#define I16 I2 I2 I2 I2 I2 I2 I2 I2
|
|
#define I128 I16 I16 I16 I16 I16 I16 I16 I16
|
|
|
|
static __cpu_simple_lock_t atomic_locks[128] = { I128 };
|
|
|
|
#ifdef __HAVE_ASM_ATOMIC_CAS_UP
|
|
extern uint32_t _atomic_cas_up(volatile uint32_t *, uint32_t, uint32_t);
|
|
#else
|
|
static uint32_t _atomic_cas_up(volatile uint32_t *, uint32_t, uint32_t);
|
|
#endif
|
|
|
|
static uint32_t (*_atomic_cas_fn)(volatile uint32_t *, uint32_t, uint32_t) =
|
|
_atomic_cas_up;
|
|
|
|
void __libc_atomic_init(void) __attribute__ ((visibility("hidden")));
|
|
|
|
RAS_DECL(_atomic_cas);
|
|
|
|
#ifndef __HAVE_ASM_ATOMIC_CAS_UP
|
|
static uint32_t
|
|
_atomic_cas_up(volatile uint32_t *ptr, uint32_t old, uint32_t new)
|
|
{
|
|
uint32_t ret;
|
|
|
|
RAS_START(_atomic_cas);
|
|
ret = *ptr;
|
|
if (__predict_false(ret != old)) {
|
|
return ret;
|
|
}
|
|
*ptr = new;
|
|
RAS_END(_atomic_cas);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
static uint32_t
|
|
_atomic_cas_mp(volatile uint32_t *ptr, uint32_t old, uint32_t new)
|
|
{
|
|
__cpu_simple_lock_t *lock;
|
|
uint32_t ret;
|
|
|
|
lock = &atomic_locks[((uintptr_t)ptr >> 3) & 127];
|
|
__cpu_simple_lock(lock);
|
|
ret = *ptr;
|
|
if (__predict_true(ret == old)) {
|
|
*ptr = new;
|
|
}
|
|
__cpu_simple_unlock(lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
uint32_t
|
|
_atomic_cas_32(volatile uint32_t *ptr, uint32_t old, uint32_t new)
|
|
{
|
|
|
|
return (*_atomic_cas_fn)(ptr, old, new);
|
|
}
|
|
|
|
void __section(".text.startup")
|
|
__libc_atomic_init(void)
|
|
{
|
|
#if !defined(__minix)
|
|
int ncpu, mib[2];
|
|
size_t len;
|
|
#endif
|
|
|
|
_atomic_cas_fn = _atomic_cas_mp;
|
|
|
|
#if !defined(__minix)
|
|
mib[0] = CTL_HW;
|
|
mib[1] = HW_NCPU;
|
|
len = sizeof(ncpu);
|
|
if (sysctl(mib, 2, &ncpu, &len, NULL, 0) == -1)
|
|
return;
|
|
if (ncpu > 1)
|
|
return;
|
|
if (rasctl(RAS_ADDR(_atomic_cas), RAS_SIZE(_atomic_cas),
|
|
RAS_INSTALL) == 0) {
|
|
_atomic_cas_fn = _atomic_cas_up;
|
|
return;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#undef atomic_cas_32
|
|
#undef atomic_cas_uint
|
|
#undef atomic_cas_ulong
|
|
#undef atomic_cas_ptr
|
|
#undef atomic_cas_32_ni
|
|
#undef atomic_cas_uint_ni
|
|
#undef atomic_cas_ulong_ni
|
|
#undef atomic_cas_ptr_ni
|
|
|
|
atomic_op_alias(atomic_cas_32,_atomic_cas_32)
|
|
atomic_op_alias(atomic_cas_uint,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_uint,_atomic_cas_32)
|
|
atomic_op_alias(atomic_cas_ulong,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_ulong,_atomic_cas_32)
|
|
atomic_op_alias(atomic_cas_ptr,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_ptr,_atomic_cas_32)
|
|
|
|
atomic_op_alias(atomic_cas_32_ni,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_32_ni,_atomic_cas_32)
|
|
atomic_op_alias(atomic_cas_uint_ni,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_uint_ni,_atomic_cas_32)
|
|
atomic_op_alias(atomic_cas_ulong_ni,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_ulong_ni,_atomic_cas_32)
|
|
atomic_op_alias(atomic_cas_ptr_ni,_atomic_cas_32)
|
|
__strong_alias(_atomic_cas_ptr_ni,_atomic_cas_32)
|