1 /* $NetBSD: pthread_md.h,v 1.3 2003/01/20 01:49:36 matt 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_VAX_MD_H 40 #define _LIB_PTHREAD_VAX_MD_H 41 42 static __inline long 43 pthread__sp(void) 44 { 45 long ret; 46 47 __asm("movl %%sp,%0" : "=r" (ret)); 48 49 return ret; 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_PC]) 54 55 /* 56 * Set initial, sane values for registers whose values aren't just 57 * "don't care". 58 * 0x03c00000 is PSL_U|PSL_PREVU from arch/vax/include/psl.h 59 */ 60 #define _INITCONTEXT_U_MD(ucp) \ 61 (ucp)->uc_mcontext.__gregs[_REG_PSL] = 0x03c00000; 62 63 #define STACKSPACE 0 64 /* 65 * Conversions between struct reg and struct mcontext. Used by 66 * libpthread_dbg. 67 */ 68 69 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ 70 memcpy((reg), &(uc)->uc_mcontext.__gregs, 17 * sizeof(__greg_t)); \ 71 (reg)->fp = (uc)->uc_mcontext.__gregs[_REG_FP]; \ 72 (reg)->sp = (uc)->uc_mcontext.__gregs[_REG_SP]; \ 73 } while (/*CONSTCOND*/0) 74 75 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 76 memcpy(&(uc)->uc_mcontext.__gregs, (reg), 17 * sizeof(__greg_t)); \ 77 (uc)->uc_mcontext.__gregs[_REG_FP] = (reg)->fp; \ 78 (uc)->uc_mcontext.__gregs[_REG_SP] = (reg)->sp; \ 79 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 80 } while (/*CONSTCOND*/0) 81 82 #define PTHREAD_UCONTEXT_TO_FPREG(reg, uc) do { \ 83 } while (/*CONSTCOND*/0) 84 85 #define PTHREAD_FPREG_TO_UCONTEXT(uc, reg) do { \ 86 } while (/*CONSTCOND*/0) 87 88 #endif /* _LIB_PTHREAD_VAX_MD_H */ 89