1 /* $NetBSD: pthread_md.h,v 1.6 2008/04/28 20:23:02 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _LIB_PTHREAD_VAX_MD_H 33 #define _LIB_PTHREAD_VAX_MD_H 34 35 static inline long 36 pthread__sp(void) 37 { 38 long ret; 39 40 __asm("movl %%sp,%0" : "=r" (ret)); 41 42 return ret; 43 } 44 45 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) 46 #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) 47 48 /* 49 * Set initial, sane values for registers whose values aren't just 50 * "don't care". 51 * 0x03c00000 is PSL_U|PSL_PREVU from arch/vax/include/psl.h 52 */ 53 #define _INITCONTEXT_U_MD(ucp) \ 54 (ucp)->uc_mcontext.__gregs[_REG_PSL] = 0x03c00000; 55 56 #define STACKSPACE 0 57 /* 58 * Conversions between struct reg and struct mcontext. Used by 59 * libpthread_dbg. 60 */ 61 62 #define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ 63 memcpy((reg), &(uc)->uc_mcontext.__gregs, 17 * sizeof(__greg_t)); \ 64 (reg)->fp = (uc)->uc_mcontext.__gregs[_REG_FP]; \ 65 (reg)->sp = (uc)->uc_mcontext.__gregs[_REG_SP]; \ 66 } while (/*CONSTCOND*/0) 67 68 #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 69 memcpy(&(uc)->uc_mcontext.__gregs, (reg), 17 * sizeof(__greg_t)); \ 70 (uc)->uc_mcontext.__gregs[_REG_FP] = (reg)->fp; \ 71 (uc)->uc_mcontext.__gregs[_REG_SP] = (reg)->sp; \ 72 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 73 } while (/*CONSTCOND*/0) 74 75 #define PTHREAD_UCONTEXT_TO_FPREG(reg, uc) do { \ 76 } while (/*CONSTCOND*/0) 77 78 #define PTHREAD_FPREG_TO_UCONTEXT(uc, reg) do { \ 79 } while (/*CONSTCOND*/0) 80 81 /* Don't need additional memory barriers. */ 82 #define PTHREAD__ATOMIC_IS_MEMBAR 83 84 #endif /* _LIB_PTHREAD_VAX_MD_H */ 85