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Make sure _atomic_cas_fn is initialised for "weirdo environments" such 

as ramdisks where the constructor doesn't get called.

Fixes ifconfig in hp700 sysinst.

OK'ed by ad.
This commit is contained in:
skrll 2009-01-30 14:29:44 +00:00
parent 29358e4ac0
commit 5dbd6a69ca
1 changed files with 12 additions and 6 deletions
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18
common/lib/libc/atomic/atomic_init_testset.c
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@ -1,4 +1,4 @@
/* $NetBSD: atomic_init_testset.c,v 1.5 2008/04/29 20:57:50 scw Exp $ */
/* $NetBSD: atomic_init_testset.c,v 1.6 2009/01/30 14:29:44 skrll Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: atomic_init_testset.c,v 1.5 2008/04/29 20:57:50 scw Exp $");
__RCSID("$NetBSD: atomic_init_testset.c,v 1.6 2009/01/30 14:29:44 skrll Exp $");
#include "atomic_op_namespace.h"
@ -53,15 +53,21 @@ __RCSID("$NetBSD: atomic_init_testset.c,v 1.5 2008/04/29 20:57:50 scw Exp $");
#define I128 I16 I16 I16 I16 I16 I16 I16 I16
static __cpu_simple_lock_t atomic_locks[128] = { I128 };
static uint32_t (*_atomic_cas_fn)(volatile uint32_t *, uint32_t, uint32_t);
#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);
#ifdef __HAVE_ASM_ATOMIC_CAS_UP
extern uint32_t _atomic_cas_up(volatile uint32_t *, uint32_t, uint32_t);
#else
#ifndef __HAVE_ASM_ATOMIC_CAS_UP
static uint32_t
_atomic_cas_up(volatile uint32_t *ptr, uint32_t old, uint32_t new)
{