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pthread_md.h revision 1.6.22.1
      1  1.6.22.1     yamt /*	$NetBSD: pthread_md.h,v 1.6.22.1 2008/05/18 12:30:42 yamt 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  *
     19       1.2  thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20       1.2  thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.2  thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.2  thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23       1.2  thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.2  thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.2  thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.2  thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.2  thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.2  thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.2  thorpej  * POSSIBILITY OF SUCH DAMAGE.
     30       1.2  thorpej  */
     31       1.2  thorpej 
     32       1.2  thorpej #ifndef _LIB_PTHREAD_MIPS_MD_H
     33       1.2  thorpej #define _LIB_PTHREAD_MIPS_MD_H
     34       1.2  thorpej 
     35       1.6    perry static inline long
     36       1.2  thorpej pthread__sp(void)
     37       1.2  thorpej {
     38       1.2  thorpej 	long ret;
     39       1.2  thorpej 
     40       1.2  thorpej 	__asm("move %0, $sp" : "=r" (ret));
     41       1.2  thorpej 
     42       1.2  thorpej 	return ret;
     43       1.2  thorpej }
     44       1.2  thorpej 
     45       1.2  thorpej #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
     46       1.2  thorpej #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EPC])
     47       1.2  thorpej 
     48       1.2  thorpej /*
     49       1.2  thorpej  * Usable stack space below the ucontext_t.
     50       1.2  thorpej  *    For a good time, see comments in pthread_switch.S and
     51       1.2  thorpej  *    ../i386/pthread_switch.S about STACK_SWITCH.
     52       1.2  thorpej  */
     53       1.3  nathanw #define STACKSPACE	(6*4)		/* 6 integer values */
     54       1.2  thorpej 
     55       1.2  thorpej /*
     56       1.2  thorpej  * Conversions between struct reg and struct mcontext. Used by
     57       1.2  thorpej  * libpthread_dbg.  Note that in the "reg" structure, the indices
     58       1.2  thorpej  * are the same as are used in the "frame" structure in the kernel.
     59       1.2  thorpej  * These do NOT, in all cases, match the indices used in the
     60       1.2  thorpej  * "mcontext" structure.
     61       1.2  thorpej  */
     62       1.2  thorpej #include <mips/regnum.h>
     63       1.2  thorpej 
     64       1.2  thorpej #define PTHREAD_UCONTEXT_TO_REG(reg, uc)				\
     65       1.2  thorpej do {									\
     66       1.4       he 	memcpy(&(reg)->r_regs[_R_AST], &(uc)->uc_mcontext.__gregs[_REG_AT],\
     67       1.2  thorpej 	    sizeof(__greg_t) * 31);					\
     68       1.4       he 	(reg)->r_regs[_R_MULLO] = (uc)->uc_mcontext.__gregs[_REG_MDLO];	\
     69       1.4       he 	(reg)->r_regs[_R_MULHI] = (uc)->uc_mcontext.__gregs[_REG_MDHI];	\
     70       1.4       he 	(reg)->r_regs[_R_CAUSE] = (uc)->uc_mcontext.__gregs[_REG_CAUSE];\
     71       1.4       he 	(reg)->r_regs[_R_PC] = (uc)->uc_mcontext.__gregs[_REG_EPC];	\
     72       1.4       he 	(reg)->r_regs[_R_SR] = (uc)->uc_mcontext.__gregs[_REG_SR];	\
     73       1.2  thorpej } while (/*CONSTCOND*/0)
     74       1.2  thorpej 
     75       1.2  thorpej #define PTHREAD_REG_TO_UCONTEXT(uc, reg)				\
     76       1.2  thorpej do {									\
     77       1.4       he 	memcpy(&(uc)->uc_mcontext.__gregs[_REG_AT], &(reg)->r_regs[_R_AST],\
     78       1.2  thorpej 	    sizeof(__greg_t) * 31);					\
     79       1.4       he 	(uc)->uc_mcontext.__gregs[_REG_MDLO] = (reg)->r_regs[_R_MULLO];	\
     80       1.4       he 	(uc)->uc_mcontext.__gregs[_REG_MDHI] = (reg)->r_regs[_R_MULHI];	\
     81       1.4       he 	(uc)->uc_mcontext.__gregs[_REG_CAUSE] = (reg)->r_regs[_R_CAUSE];\
     82       1.4       he 	(uc)->uc_mcontext.__gregs[_REG_EPC] = (reg)->r_regs[_R_PC];	\
     83       1.4       he 	(uc)->uc_mcontext.__gregs[_REG_SR] = (reg)->r_regs[_R_SR];	\
     84       1.2  thorpej 									\
     85       1.2  thorpej 	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
     86       1.2  thorpej } while (/*CONSTCOND*/0)
     87       1.2  thorpej 
     88       1.2  thorpej #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc)       			\
     89       1.2  thorpej do {									\
     90       1.5   simonb 	memcpy((freg), &(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs,	\
     91       1.5   simonb 	    sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs));	\
     92       1.4       he 	(freg)->r_regs[_R_FSR - _FPBASE] =				\
     93       1.2  thorpej 	    (uc)->uc_mcontext.__fpregs.__fp_csr;			\
     94       1.2  thorpej } while (/*CONSTCOND*/0)
     95       1.2  thorpej 
     96       1.2  thorpej #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg)				\
     97       1.2  thorpej do {						       	       		\
     98       1.5   simonb 	memcpy(&(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, (freg),	\
     99       1.5   simonb 	    sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs));	\
    100       1.2  thorpej 	(uc)->uc_mcontext.__fpregs.__fp_csr =				\
    101       1.4       he 	    (freg)->r_regs[_R_FSR - _FPBASE];				\
    102       1.2  thorpej 									\
    103       1.2  thorpej 	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
    104       1.2  thorpej } while (/*CONSTCOND*/0)
    105       1.2  thorpej 
    106       1.2  thorpej #endif /* !_LIB_PTHREAD_MIPS_MD_H */
    107