61c83c3f05
to ensure a sane installation. (mach_interface_list): Define this variable by checking for .defs files found in various variants. * configure.in (mach_interface_list): AC_SUBST this. * config.make.in (mach-interface-list): New substituted variable. * mach/Makefile (user-interfaces): Define this using the value of $(mach-interface-list) instead of mach, mach4. Updated other references to mach_interface to use it as well. * sysdeps/mach/powerpc/machine-lock.h: Avoid multi-line strings. * mach/msgserver.c [NDR_CHAR_ASCII] (mig_reply_header_t): #define as mig_reply_error_t for OSF Mach variant. * mach/Makefile (routines): Remove bootprivport. * mach/bootprivport.c: File removed. It has never been used. * mach/msg-destroy.c (__mach_msg_destroy) [MACH_MSG_PORT_DESCRIPTOR]: Grok the OSF flavor of message format. (mach_msg_destroy_port): For MAKE_SEND and MAKE_SEND_ONCE rights, create an destroy a right to ensure proper no-senders notification. 2002-02-06 Roland McGrath <roland@frob.com> * hurd/Versions (libc: GLIBC_2.0): Move cthread_fork, cthread_detach to here if 2.0 compatibility enabled ... (libc: GLIBC_2.1.3): ... from here.
79 lines
2 KiB
C
79 lines
2 KiB
C
/* Machine-specific definition for spin locks. PowerPC version.
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Copyright (C) 1994,97,2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _MACHINE_LOCK_H
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#define _MACHINE_LOCK_H
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/* The type of a spin lock variable. */
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typedef __volatile long int __spin_lock_t;
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/* Value to initialize `__spin_lock_t' variables to. */
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#define __SPIN_LOCK_INITIALIZER 0L
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#ifndef _EXTERN_INLINE
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#define _EXTERN_INLINE extern __inline
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#endif
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/* Unlock LOCK. */
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_EXTERN_INLINE void
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__spin_unlock (__spin_lock_t *__lock)
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{
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long int __locked;
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__asm__ __volatile__ ("\
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0: lwarx %0,0,%1\n\
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stwcx. %2,0,%1\n\
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bne- 0b\n\
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" : "=&r" (__locked) : "r" (__lock), "r" (0) : "cr0");
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}
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/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */
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_EXTERN_INLINE int
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__spin_try_lock (register __spin_lock_t *__lock)
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{
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long int __rtn;
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__asm__ __volatile__ ("\
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0: lwarx %0,0,%1\n\
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stwcx. %2,0,%1\n\
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bne- 0b\n\
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" : "=&r" (__rtn) : "r" (__lock), "r" (1) : "cr0");
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return !__rtn;
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}
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/* Return nonzero if LOCK is locked. */
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_EXTERN_INLINE int
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__spin_lock_locked (__spin_lock_t *__lock)
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{
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long int __rtn;
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__asm__ __volatile__ ("\
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0: lwarx %0,0,%1\n\
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stwcx. %0,0,%1\n\
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bne- 0b\n\
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" : "=&r" (__rtn) : "r" (__lock) : "cr0");
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return __rtn;
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}
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#endif /* machine-lock.h */
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