/* $NetBSD: pthread_md.h,v 1.6 2008/04/28 20:23:02 martin Exp $ */ /*- * Copyright (c) 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Nathan J. Williams. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 THE FOUNDATION OR CONTRIBUTORS * 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. */ /* * Based on the i386 version. */ #ifndef _LIB_PTHREAD_M68K_MD_H #define _LIB_PTHREAD_M68K_MD_H static inline long pthread__sp(void) { long ret; __asm("movl %%sp, %0" : "=g" (ret)); return ret; } #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_A7]) #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC]) /* * Usable stack space below the ucontext_t. * See comment in pthread_switch.S about STACK_SWITCH. */ #define STACKSPACE 12 /* room for 3 integer values */ /* * Conversions between struct reg and struct mcontext. Used by * libpthread_dbg. */ #define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \ memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs, \ _REG_PC * sizeof(__greg_t)); \ (reg)->r_sr = (uc)->uc_mcontext.__gregs[_REG_PS]; \ (reg)->r_pc = (uc)->uc_mcontext.__gregs[_REG_PC]; \ } while (/*CONSTCOND*/0) #define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \ memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs, \ _REG_PC * sizeof(__greg_t)); \ (uc)->uc_mcontext.__gregs[_REG_PS] = (reg)->r_sr; \ (uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_pc; \ (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \ } while (/*CONSTCOND*/0) #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) do { \ memcpy(&(freg)->r_regs, &(uc)->uc_mcontext.__fpregs.__fp_fpregs,\ 8 * 3 * sizeof(int)); \ (freg)->r_fpcr = (uc)->uc_mcontext.__fpregs.__fp_pcr; \ (freg)->r_fpsr = (uc)->uc_mcontext.__fpregs.__fp_psr; \ (freg)->r_fpiar = (uc)->uc_mcontext.__fpregs.__fp_piaddr; \ } while (/*CONSTCOND*/0) #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \ memcpy(&(uc)->uc_mcontext.__fpregs.__fp_fpregs, &(freg)->r_regs,\ 8 * 3 * sizeof(int)); \ (uc)->uc_mcontext.__fpregs.__fp_pcr = (freg)->r_fpcr; \ (uc)->uc_mcontext.__fpregs.__fp_psr = (freg)->r_fpsr; \ (uc)->uc_mcontext.__fpregs.__fp_piaddr = (freg)->r_fpiar; \ (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \ } while (/*CONSTCOND*/0) /* m68k will not go SMP */ #define PTHREAD__ATOMIC_IS_MEMBAR #endif /* _LIB_PTHREAD_M68K_MD_H */