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pthread_md.h revision 1.2 
      1 /*	$NetBSD: pthread_md.h,v 1.2 2005/12/24 21:11:16 perry 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 static inline long
     45 pthread__sp(void)
     46 {
     47 	register long sp __asm__("r30");
     48 
     49 	return sp;
     50 }
     51 
     52 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
     53 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PCOQH])
     54 
     55 /*
     56  * Set initial, sane values for registers whose values aren't just
     57  * "don't care".
     58  */
     59 #define _INITCONTEXT_U_MD(ucp)						\
     60 	(ucp)->uc_mcontext.__gregs[_REG_PSW] = 0x4000f;
     61 
     62 /*
     63  * Usable stack space below the ucontext_t.
     64  */
     65 #define STACKSPACE	(HPPA_FRAME_SIZE)
     66 
     67 /*
     68  * Conversions between struct reg and struct mcontext. Used by
     69  * libpthread_dbg.
     70  */
     71 #include <hppa/reg.h>
     72 
     73 #define PTHREAD_UCONTEXT_TO_REG(reg, uc)				\
     74 do {									\
     75 	memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs,		\
     76 	    sizeof(__greg_t) * 32);					\
     77 } while (/*CONSTCOND*/0)
     78 
     79 #define PTHREAD_REG_TO_UCONTEXT(uc, reg)				\
     80 do {									\
     81 	memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs,		\
     82 	    sizeof(__greg_t) * 32);					\
     83 	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
     84 } while (/*CONSTCOND*/0)
     85 
     86 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc)       			\
     87 do {									\
     88 	memcpy((freg), &(uc)->uc_mcontext.__fpregs,			\
     89 	    sizeof(struct fpreg));					\
     90 } while (/*CONSTCOND*/0)
     91 
     92 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg)				\
     93 do {						       	       		\
     94 	memcpy(&(uc)->uc_mcontext.__fpregs, (freg),			\
     95 	    sizeof(struct fpreg));					\
     96 	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
     97 } while (/*CONSTCOND*/0)
     98 
     99 #endif /* !_LIB_PTHREAD_HPPA_MD_H */
    100