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pthread_md.h revision 1.5 
      1 /*	$NetBSD: pthread_md.h,v 1.5 2008/02/10 18:50:55 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Nathan J. Williams.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _LIB_PTHREAD_HPPA_MD_H
     40 #define _LIB_PTHREAD_HPPA_MD_H
     41 
     42 #include <machine/frame.h>
     43 
     44 #define	PTHREAD__ASM_RASOPS
     45 
     46 static inline long
     47 pthread__sp(void)
     48 {
     49 	register long sp __asm("r30");
     50 
     51 	return sp;
     52 }
     53 
     54 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
     55 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PCOQH])
     56 
     57 /*
     58  * Set initial, sane values for registers whose values aren't just
     59  * "don't care".
     60  */
     61 #define _INITCONTEXT_U_MD(ucp)						\
     62 	(ucp)->uc_mcontext.__gregs[_REG_PSW] = 0x4000f;
     63 
     64 /*
     65  * Usable stack space below the ucontext_t.
     66  */
     67 #define STACKSPACE	(HPPA_FRAME_SIZE)
     68 
     69 /*
     70  * Conversions between struct reg and struct mcontext. Used by
     71  * libpthread_dbg.
     72  */
     73 #include <hppa/reg.h>
     74 
     75 #define PTHREAD_UCONTEXT_TO_REG(reg, uc)				\
     76 do {									\
     77 	memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs,		\
     78 	    sizeof(__greg_t) * 32);					\
     79 } while (/*CONSTCOND*/0)
     80 
     81 #define PTHREAD_REG_TO_UCONTEXT(uc, reg)				\
     82 do {									\
     83 	memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs,		\
     84 	    sizeof(__greg_t) * 32);					\
     85 	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
     86 } while (/*CONSTCOND*/0)
     87 
     88 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc)       			\
     89 do {									\
     90 	memcpy((freg), &(uc)->uc_mcontext.__fpregs,			\
     91 	    sizeof(struct fpreg));					\
     92 } while (/*CONSTCOND*/0)
     93 
     94 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg)				\
     95 do {						       	       		\
     96 	memcpy(&(uc)->uc_mcontext.__fpregs, (freg),			\
     97 	    sizeof(struct fpreg));					\
     98 	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
     99 } while (/*CONSTCOND*/0)
    100 
    101 /* Don't need additional memory barriers. */
    102 #define	PTHREAD__ATOMIC_IS_MEMBAR
    103 
    104 #endif /* !_LIB_PTHREAD_HPPA_MD_H */
    105