Home | History | Annotate | Line # | Download | only in mips
pthread_md.h revision 1.7.8.2
      1  1.7.8.2  martin /*	$NetBSD: pthread_md.h,v 1.7.8.2 2008/04/28 20:23:03 martin Exp $	*/
      2  1.7.8.2  martin 
      3  1.7.8.2  martin /*-
      4  1.7.8.2  martin  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  1.7.8.2  martin  * All rights reserved.
      6  1.7.8.2  martin  *
      7  1.7.8.2  martin  * This code is derived from software contributed to The NetBSD Foundation
      8  1.7.8.2  martin  * by Nathan J. Williams.
      9  1.7.8.2  martin  *
     10  1.7.8.2  martin  * Redistribution and use in source and binary forms, with or without
     11  1.7.8.2  martin  * modification, are permitted provided that the following conditions
     12  1.7.8.2  martin  * are met:
     13  1.7.8.2  martin  * 1. Redistributions of source code must retain the above copyright
     14  1.7.8.2  martin  *    notice, this list of conditions and the following disclaimer.
     15  1.7.8.2  martin  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.7.8.2  martin  *    notice, this list of conditions and the following disclaimer in the
     17  1.7.8.2  martin  *    documentation and/or other materials provided with the distribution.
     18  1.7.8.2  martin  *
     19  1.7.8.2  martin  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.7.8.2  martin  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.7.8.2  martin  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.7.8.2  martin  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.7.8.2  martin  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.7.8.2  martin  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.7.8.2  martin  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.7.8.2  martin  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.7.8.2  martin  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.7.8.2  martin  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.7.8.2  martin  * POSSIBILITY OF SUCH DAMAGE.
     30  1.7.8.2  martin  */
     31  1.7.8.2  martin 
     32  1.7.8.2  martin #ifndef _LIB_PTHREAD_MIPS_MD_H
     33  1.7.8.2  martin #define _LIB_PTHREAD_MIPS_MD_H
     34  1.7.8.2  martin 
     35  1.7.8.2  martin static inline long
     36  1.7.8.2  martin pthread__sp(void)
     37  1.7.8.2  martin {
     38  1.7.8.2  martin 	long ret;
     39  1.7.8.2  martin 
     40  1.7.8.2  martin 	__asm("move %0, $sp" : "=r" (ret));
     41  1.7.8.2  martin 
     42  1.7.8.2  martin 	return ret;
     43  1.7.8.2  martin }
     44  1.7.8.2  martin 
     45  1.7.8.2  martin #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
     46  1.7.8.2  martin #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EPC])
     47  1.7.8.2  martin 
     48  1.7.8.2  martin /*
     49  1.7.8.2  martin  * Usable stack space below the ucontext_t.
     50  1.7.8.2  martin  *    For a good time, see comments in pthread_switch.S and
     51  1.7.8.2  martin  *    ../i386/pthread_switch.S about STACK_SWITCH.
     52  1.7.8.2  martin  */
     53  1.7.8.2  martin #define STACKSPACE	(6*4)		/* 6 integer values */
     54  1.7.8.2  martin 
     55  1.7.8.2  martin /*
     56  1.7.8.2  martin  * Conversions between struct reg and struct mcontext. Used by
     57  1.7.8.2  martin  * libpthread_dbg.  Note that in the "reg" structure, the indices
     58  1.7.8.2  martin  * are the same as are used in the "frame" structure in the kernel.
     59  1.7.8.2  martin  * These do NOT, in all cases, match the indices used in the
     60  1.7.8.2  martin  * "mcontext" structure.
     61  1.7.8.2  martin  */
     62  1.7.8.2  martin #include <mips/regnum.h>
     63  1.7.8.2  martin 
     64  1.7.8.2  martin #define PTHREAD_UCONTEXT_TO_REG(reg, uc)				\
     65  1.7.8.2  martin do {									\
     66  1.7.8.2  martin 	memcpy(&(reg)->r_regs[_R_AST], &(uc)->uc_mcontext.__gregs[_REG_AT],\
     67  1.7.8.2  martin 	    sizeof(__greg_t) * 31);					\
     68  1.7.8.2  martin 	(reg)->r_regs[_R_MULLO] = (uc)->uc_mcontext.__gregs[_REG_MDLO];	\
     69  1.7.8.2  martin 	(reg)->r_regs[_R_MULHI] = (uc)->uc_mcontext.__gregs[_REG_MDHI];	\
     70  1.7.8.2  martin 	(reg)->r_regs[_R_CAUSE] = (uc)->uc_mcontext.__gregs[_REG_CAUSE];\
     71  1.7.8.2  martin 	(reg)->r_regs[_R_PC] = (uc)->uc_mcontext.__gregs[_REG_EPC];	\
     72  1.7.8.2  martin 	(reg)->r_regs[_R_SR] = (uc)->uc_mcontext.__gregs[_REG_SR];	\
     73  1.7.8.2  martin } while (/*CONSTCOND*/0)
     74  1.7.8.2  martin 
     75  1.7.8.2  martin #define PTHREAD_REG_TO_UCONTEXT(uc, reg)				\
     76  1.7.8.2  martin do {									\
     77  1.7.8.2  martin 	memcpy(&(uc)->uc_mcontext.__gregs[_REG_AT], &(reg)->r_regs[_R_AST],\
     78  1.7.8.2  martin 	    sizeof(__greg_t) * 31);					\
     79  1.7.8.2  martin 	(uc)->uc_mcontext.__gregs[_REG_MDLO] = (reg)->r_regs[_R_MULLO];	\
     80  1.7.8.2  martin 	(uc)->uc_mcontext.__gregs[_REG_MDHI] = (reg)->r_regs[_R_MULHI];	\
     81  1.7.8.2  martin 	(uc)->uc_mcontext.__gregs[_REG_CAUSE] = (reg)->r_regs[_R_CAUSE];\
     82  1.7.8.2  martin 	(uc)->uc_mcontext.__gregs[_REG_EPC] = (reg)->r_regs[_R_PC];	\
     83  1.7.8.2  martin 	(uc)->uc_mcontext.__gregs[_REG_SR] = (reg)->r_regs[_R_SR];	\
     84  1.7.8.2  martin 									\
     85  1.7.8.2  martin 	(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER;       	\
     86  1.7.8.2  martin } while (/*CONSTCOND*/0)
     87  1.7.8.2  martin 
     88  1.7.8.2  martin #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc)       			\
     89  1.7.8.2  martin do {									\
     90  1.7.8.2  martin 	memcpy((freg), &(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs,	\
     91  1.7.8.2  martin 	    sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs));	\
     92  1.7.8.2  martin 	(freg)->r_regs[_R_FSR - _FPBASE] =				\
     93  1.7.8.2  martin 	    (uc)->uc_mcontext.__fpregs.__fp_csr;			\
     94  1.7.8.2  martin } while (/*CONSTCOND*/0)
     95  1.7.8.2  martin 
     96  1.7.8.2  martin #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg)				\
     97  1.7.8.2  martin do {						       	       		\
     98  1.7.8.2  martin 	memcpy(&(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, (freg),	\
     99  1.7.8.2  martin 	    sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs));	\
    100  1.7.8.2  martin 	(uc)->uc_mcontext.__fpregs.__fp_csr =				\
    101  1.7.8.2  martin 	    (freg)->r_regs[_R_FSR - _FPBASE];				\
    102  1.7.8.2  martin 									\
    103  1.7.8.2  martin 	(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER;       	\
    104  1.7.8.2  martin } while (/*CONSTCOND*/0)
    105  1.7.8.2  martin 
    106  1.7.8.2  martin #endif /* !_LIB_PTHREAD_MIPS_MD_H */
    107