pthread_md.h revision 1.10
11.10Sskrll/* $NetBSD: pthread_md.h,v 1.10 2017/07/17 20:24:07 skrll Exp $ */ 21.2Sthorpej 31.2Sthorpej/* 41.2Sthorpej * Copyright (c) 2001 Wasabi Systems, Inc. 51.2Sthorpej * All rights reserved. 61.2Sthorpej * 71.2Sthorpej * Written by Jason R. Thorpe for Wasabi Systems, Inc. 81.2Sthorpej * 91.2Sthorpej * Redistribution and use in source and binary forms, with or without 101.2Sthorpej * modification, are permitted provided that the following conditions 111.2Sthorpej * are met: 121.2Sthorpej * 1. Redistributions of source code must retain the above copyright 131.2Sthorpej * notice, this list of conditions and the following disclaimer. 141.2Sthorpej * 2. Redistributions in binary form must reproduce the above copyright 151.2Sthorpej * notice, this list of conditions and the following disclaimer in the 161.2Sthorpej * documentation and/or other materials provided with the distribution. 171.2Sthorpej * 3. All advertising materials mentioning features or use of this software 181.2Sthorpej * must display the following acknowledgement: 191.2Sthorpej * This product includes software developed for the NetBSD Project by 201.2Sthorpej * Wasabi Systems, Inc. 211.2Sthorpej * 4. The name of Wasabi Systems, Inc. may not be used to endorse 221.2Sthorpej * or promote products derived from this software without specific prior 231.2Sthorpej * written permission. 241.2Sthorpej * 251.2Sthorpej * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 261.2Sthorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 271.2Sthorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 281.2Sthorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 291.2Sthorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 301.2Sthorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 311.2Sthorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 321.2Sthorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 331.2Sthorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 341.2Sthorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 351.2Sthorpej * POSSIBILITY OF SUCH DAMAGE. 361.2Sthorpej */ 371.2Sthorpej 381.2Sthorpej#ifndef _LIB_PTHREAD_ARM_MD_H 391.2Sthorpej#define _LIB_PTHREAD_ARM_MD_H 401.2Sthorpej 411.6Schristosstatic inline unsigned long 421.2Sthorpejpthread__sp(void) 431.2Sthorpej{ 441.6Schristos unsigned long ret; 451.2Sthorpej 461.4Sperry __asm volatile("mov %0, sp" 471.2Sthorpej : "=r" (ret)); 481.2Sthorpej 491.2Sthorpej return (ret); 501.2Sthorpej} 511.2Sthorpej 521.9Smatt#if defined(__thumb__) && defined(_ARM_ARCH_6) 531.9Smatt#define pthread__smt_pause() __asm __volatile(".inst.n 0xbf20") /* wfe */ 541.9Smatt#define pthread__smt_wake() __asm __volatile(".inst.n 0xbf40") /* sev */ 551.9Smatt#elif !defined(__thumb__) 561.8Smatt#define pthread__smt_pause() __asm __volatile(".inst 0xe320f002") /* wfe */ 571.8Smatt#define pthread__smt_wake() __asm __volatile(".inst 0xe320f004") /* sev */ 581.9Smatt#else 591.9Smatt#define pthread__smt_pause() 601.9Smatt#define pthread__smt_wake() 611.9Smatt#endif 621.7Smatt 631.2Sthorpej#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP]) 641.2Sthorpej 651.2Sthorpej/* 661.2Sthorpej * Set initial, sane values for registers whose values aren't just 671.2Sthorpej * "don't care". 681.2Sthorpej */ 691.2Sthorpej#ifdef __APCS_26__ 701.2Sthorpej#define _INITCONTEXT_U_MD(ucp) \ 711.3Schristos/* Set R15_MODE_USR in the PC */ \ 721.2Sthorpej (ucp)->uc_mcontext.__gregs[_REG_PC] = \ 731.2Sthorpej ((ucp)->uc_mcontext.__gregs[_REG_PC] & 0x3fffffc) | 0x0; 741.2Sthorpej#else 751.10Sskrll/* Set CPSR to PSR_USR32_MODE (0x10) from arm/armreg.h */ 761.2Sthorpej#define _INITCONTEXT_U_MD(ucp) \ 771.2Sthorpej (ucp)->uc_mcontext.__gregs[_REG_CPSR] = 0x10; 781.2Sthorpej#endif 791.2Sthorpej 801.2Sthorpej#endif /* _LIB_PTHREAD_ARM_MD_H */ 81