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pthread_md.h revision 1.4.2.1
      1  1.4.2.1       he /*	$NetBSD: pthread_md.h,v 1.4.2.1 2004/07/04 12:56:21 he Exp $	*/
      2      1.2  thorpej 
      3      1.2  thorpej /*-
      4      1.2  thorpej  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5      1.2  thorpej  * All rights reserved.
      6      1.2  thorpej  *
      7      1.2  thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8      1.2  thorpej  * by Nathan J. Williams.
      9      1.2  thorpej  *
     10      1.2  thorpej  * Redistribution and use in source and binary forms, with or without
     11      1.2  thorpej  * modification, are permitted provided that the following conditions
     12      1.2  thorpej  * are met:
     13      1.2  thorpej  * 1. Redistributions of source code must retain the above copyright
     14      1.2  thorpej  *    notice, this list of conditions and the following disclaimer.
     15      1.2  thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.2  thorpej  *    notice, this list of conditions and the following disclaimer in the
     17      1.2  thorpej  *    documentation and/or other materials provided with the distribution.
     18      1.2  thorpej  * 3. All advertising materials mentioning features or use of this software
     19      1.2  thorpej  *    must display the following acknowledgement:
     20      1.2  thorpej  *        This product includes software developed by the NetBSD
     21      1.2  thorpej  *        Foundation, Inc. and its contributors.
     22      1.2  thorpej  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23      1.2  thorpej  *    contributors may be used to endorse or promote products derived
     24      1.2  thorpej  *    from this software without specific prior written permission.
     25      1.2  thorpej  *
     26      1.2  thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27      1.2  thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28      1.2  thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29      1.2  thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30      1.2  thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31      1.2  thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32      1.2  thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33      1.2  thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34      1.2  thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35      1.2  thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36      1.2  thorpej  * POSSIBILITY OF SUCH DAMAGE.
     37      1.2  thorpej  */
     38      1.2  thorpej 
     39      1.2  thorpej #ifndef _LIB_PTHREAD_MIPS_MD_H
     40      1.2  thorpej #define _LIB_PTHREAD_MIPS_MD_H
     41      1.2  thorpej 
     42      1.2  thorpej static __inline long
     43      1.2  thorpej pthread__sp(void)
     44      1.2  thorpej {
     45      1.2  thorpej 	long ret;
     46      1.2  thorpej 
     47      1.2  thorpej 	__asm("move %0, $sp" : "=r" (ret));
     48      1.2  thorpej 
     49      1.2  thorpej 	return ret;
     50      1.2  thorpej }
     51      1.2  thorpej 
     52      1.2  thorpej #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
     53      1.2  thorpej #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EPC])
     54      1.2  thorpej 
     55      1.2  thorpej /*
     56      1.2  thorpej  * Usable stack space below the ucontext_t.
     57      1.2  thorpej  *    For a good time, see comments in pthread_switch.S and
     58      1.2  thorpej  *    ../i386/pthread_switch.S about STACK_SWITCH.
     59      1.2  thorpej  */
     60      1.3  nathanw #define STACKSPACE	(6*4)		/* 6 integer values */
     61      1.2  thorpej 
     62      1.2  thorpej /*
     63      1.2  thorpej  * Conversions between struct reg and struct mcontext. Used by
     64      1.2  thorpej  * libpthread_dbg.  Note that in the "reg" structure, the indices
     65      1.2  thorpej  * are the same as are used in the "frame" structure in the kernel.
     66      1.2  thorpej  * These do NOT, in all cases, match the indices used in the
     67      1.2  thorpej  * "mcontext" structure.
     68      1.2  thorpej  */
     69      1.2  thorpej #include <mips/regnum.h>
     70      1.2  thorpej 
     71      1.2  thorpej #define PTHREAD_UCONTEXT_TO_REG(reg, uc)				\
     72      1.2  thorpej do {									\
     73      1.4       he 	memcpy(&(reg)->r_regs[_R_AST], &(uc)->uc_mcontext.__gregs[_REG_AT],\
     74      1.2  thorpej 	    sizeof(__greg_t) * 31);					\
     75      1.4       he 	(reg)->r_regs[_R_MULLO] = (uc)->uc_mcontext.__gregs[_REG_MDLO];	\
     76      1.4       he 	(reg)->r_regs[_R_MULHI] = (uc)->uc_mcontext.__gregs[_REG_MDHI];	\
     77      1.4       he 	(reg)->r_regs[_R_CAUSE] = (uc)->uc_mcontext.__gregs[_REG_CAUSE];\
     78      1.4       he 	(reg)->r_regs[_R_PC] = (uc)->uc_mcontext.__gregs[_REG_EPC];	\
     79      1.4       he 	(reg)->r_regs[_R_SR] = (uc)->uc_mcontext.__gregs[_REG_SR];	\
     80      1.2  thorpej } while (/*CONSTCOND*/0)
     81      1.2  thorpej 
     82      1.2  thorpej #define PTHREAD_REG_TO_UCONTEXT(uc, reg)				\
     83      1.2  thorpej do {									\
     84      1.4       he 	memcpy(&(uc)->uc_mcontext.__gregs[_REG_AT], &(reg)->r_regs[_R_AST],\
     85      1.2  thorpej 	    sizeof(__greg_t) * 31);					\
     86      1.4       he 	(uc)->uc_mcontext.__gregs[_REG_MDLO] = (reg)->r_regs[_R_MULLO];	\
     87      1.4       he 	(uc)->uc_mcontext.__gregs[_REG_MDHI] = (reg)->r_regs[_R_MULHI];	\
     88      1.4       he 	(uc)->uc_mcontext.__gregs[_REG_CAUSE] = (reg)->r_regs[_R_CAUSE];\
     89      1.4       he 	(uc)->uc_mcontext.__gregs[_REG_EPC] = (reg)->r_regs[_R_PC];	\
     90      1.4       he 	(uc)->uc_mcontext.__gregs[_REG_SR] = (reg)->r_regs[_R_SR];	\
     91      1.2  thorpej 									\
     92      1.2  thorpej 	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
     93      1.2  thorpej } while (/*CONSTCOND*/0)
     94      1.2  thorpej 
     95      1.2  thorpej #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc)       			\
     96      1.2  thorpej do {									\
     97  1.4.2.1       he 	memcpy((freg), &(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs,	\
     98  1.4.2.1       he 	    sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs));	\
     99      1.4       he 	(freg)->r_regs[_R_FSR - _FPBASE] =				\
    100      1.2  thorpej 	    (uc)->uc_mcontext.__fpregs.__fp_csr;			\
    101      1.2  thorpej } while (/*CONSTCOND*/0)
    102      1.2  thorpej 
    103      1.2  thorpej #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg)				\
    104      1.2  thorpej do {						       	       		\
    105  1.4.2.1       he 	memcpy(&(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, (freg),	\
    106  1.4.2.1       he 	    sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs));	\
    107      1.2  thorpej 	(uc)->uc_mcontext.__fpregs.__fp_csr =				\
    108      1.4       he 	    (freg)->r_regs[_R_FSR - _FPBASE];				\
    109      1.2  thorpej 									\
    110      1.2  thorpej 	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
    111      1.2  thorpej } while (/*CONSTCOND*/0)
    112      1.2  thorpej 
    113      1.2  thorpej #endif /* !_LIB_PTHREAD_MIPS_MD_H */
    114