/* $NetBSD: pthread_md.h,v 1.11.10.1 2023/08/01 16:21:07 martin Exp $ */ /* * Copyright (c) 2001 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _LIB_PTHREAD_ARM_MD_H #define _LIB_PTHREAD_ARM_MD_H static inline unsigned long pthread__sp(void) { unsigned long ret; __asm volatile("mov %0, sp" : "=r" (ret)); return (ret); } #if defined(__thumb__) && defined(_ARM_ARCH_6) #define pthread__smt_wait() __asm __volatile(".inst.n 0xbf20") /* wfe */ #define pthread__smt_wake() __asm __volatile(".inst.n 0xbf40") /* sev */ #elif !defined(__thumb__) #define pthread__smt_wait() __asm __volatile(".inst 0xe320f002") /* wfe */ #define pthread__smt_wake() __asm __volatile(".inst 0xe320f004") /* sev */ #else #define pthread__smt_wait() __nothing #define pthread__smt_wake() __nothing #endif #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) /* * Set initial, sane values for registers whose values aren't just * "don't care". */ /* Set CPSR to PSR_USR32_MODE (0x10) from arm/armreg.h */ #define _INITCONTEXT_U_MD(ucp) \ (ucp)->uc_mcontext.__gregs[_REG_CPSR] = 0x10; #endif /* _LIB_PTHREAD_ARM_MD_H */