1 /* $NetBSD: pthread_md.h,v 1.2 2003/11/20 17:38:08 uwe Exp $ */ 2 3 /* 4 * Copyright 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Steve C. Woodford for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _LIB_PTHREAD_SH3_MD_H 39 #define _LIB_PTHREAD_SH3_MD_H 40 41 static __inline long 42 pthread__sp(void) 43 { 44 long ret; 45 __asm("mov r15, %0" : "=r" (ret)); 46 47 return ret; 48 } 49 50 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_R15]) 51 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) 52 53 /* 54 * Set initial, sane values for registers whose values aren't just 55 * "don't care". 56 */ 57 #define _INITCONTEXT_U_MD(ucp) \ 58 (ucp)->uc_mcontext.__gregs[_REG_SR] = 0; 59 60 /* 61 * SH3 requires no extra stack space 62 */ 63 #define STACKSPACE 0 64 65 66 /* 67 * Conversions between struct reg and struct mcontext. Used by 68 * libpthread_dbg. 69 */ 70 71 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) \ 72 memcpy((reg), &(uc)->uc_mcontext.__gregs[0], sizeof(*(reg))) 73 74 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 75 memcpy(&(uc)->uc_mcontext.__gregs[0], (reg), sizeof(*(reg))); \ 76 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 77 } while (/*CONSTCOND*/0) 78 79 #if 0 /* no struct fpreg!!! */ 80 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \ 81 memcpy((freg), &(uc)->uc_mcontext.__fpregs, sizeof(*(freg))); 82 83 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \ 84 memcpy(&(uc)->uc_mcontext.__fpregs, (freg), sizeof(*(freg))); \ 85 (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ 86 } while (/*CONSTCOND*/0) 87 88 #else /* SBUBS */ 89 #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) 90 #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) 91 #endif 92 93 #endif /* _LIB_PTHREAD_SH3_MD_H */ 94