pthread_md.h revision 1.3
1/* $NetBSD: pthread_md.h,v 1.3 2003/11/25 21:27:30 christos 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/* 40 * Based on the i386 version. 41 */ 42 43#ifndef _LIB_PTHREAD_M68K_MD_H 44#define _LIB_PTHREAD_M68K_MD_H 45 46 47static __inline long 48pthread__sp(void) 49{ 50 long ret; 51 __asm("movl %%sp, %0" : "=g" (ret)); 52 53 return ret; 54} 55 56#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_A7]) 57#define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) 58 59/* 60 * Usable stack space below the ucontext_t. 61 * See comment in pthread_switch.S about STACK_SWITCH. 62 */ 63#define STACKSPACE 12 /* room for 3 integer values */ 64 65/* 66 * Conversions between struct reg and struct mcontext. Used by 67 * libpthread_dbg. 68 */ 69 70#define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ 71 memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs, \ 72 _REG_PC * sizeof(__greg_t)); \ 73 (reg)->r_sr = (uc)->uc_mcontext.__gregs[_REG_PS]; \ 74 (reg)->r_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ 75 } while (/*CONSTCOND*/0) 76 77#define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ 78 memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs, \ 79 _REG_PC * sizeof(__greg_t)); \ 80 (uc)->uc_mcontext.__gregs[_REG_PS] = (reg)->r_sr; \ 81 (uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_pc; \ 82 (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ 83 } while (/*CONSTCOND*/0) 84 85#define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) do { \ 86 memcpy(&(freg)->r_regs, &(uc)->uc_mcontext.__fpregs.__fp_fpregs,\ 87 8 * 3 * sizeof(int)); \ 88 (freg)->r_fpcr = (uc)->uc_mcontext.__fpregs.__fp_pcr; \ 89 (freg)->r_fpsr = (uc)->uc_mcontext.__fpregs.__fp_psr; \ 90 (freg)->r_fpiar = (uc)->uc_mcontext.__fpregs.__fp_piaddr; \ 91 } while (/*CONSTCOND*/0) 92 93#define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \ 94 memcpy(&(uc)->uc_mcontext.__fpregs.__fp_fpregs, &(freg)->r_regs,\ 95 8 * 3 * sizeof(int)); \ 96 (uc)->uc_mcontext.__fpregs.__fp_pcr = (freg)->r_fpcr; \ 97 (uc)->uc_mcontext.__fpregs.__fp_psr = (freg)->r_fpsr; \ 98 (uc)->uc_mcontext.__fpregs.__fp_piaddr = (freg)->r_fpiar; \ 99 (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ 100 } while (/*CONSTCOND*/0) 101 102#endif /* _LIB_PTHREAD_M68K_MD_H */ 103