1 /* $NetBSD: pthread_md.h,v 1.5 2009/05/16 22:20:40 ad Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe 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_ARM_MD_H 39 #define _LIB_PTHREAD_ARM_MD_H 40 41 static inline long 42 pthread__sp(void) 43 { 44 long ret; 45 46 __asm volatile("mov %0, sp" 47 : "=r" (ret)); 48 49 return (ret); 50 } 51 52 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) 53 54 /* 55 * Set initial, sane values for registers whose values aren't just 56 * "don't care". 57 */ 58 #ifdef __APCS_26__ 59 #define _INITCONTEXT_U_MD(ucp) \ 60 /* Set R15_MODE_USR in the PC */ \ 61 (ucp)->uc_mcontext.__gregs[_REG_PC] = \ 62 ((ucp)->uc_mcontext.__gregs[_REG_PC] & 0x3fffffc) | 0x0; 63 #else 64 /* Set CPSR to PSR_USE32_MODE (0x10) from arm/armreg.h */ 65 #define _INITCONTEXT_U_MD(ucp) \ 66 (ucp)->uc_mcontext.__gregs[_REG_CPSR] = 0x10; 67 #endif 68 69 #endif /* _LIB_PTHREAD_ARM_MD_H */ 70