92 lines
3.6 KiB
C
92 lines
3.6 KiB
C
/* $NetBSD: pthread_md.h,v 1.3 2005/12/24 21:11:16 perry Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nathan J. Williams.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LIB_PTHREAD_ALPHA_MD_H
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#define _LIB_PTHREAD_ALPHA_MD_H
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static inline long
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pthread__sp(void)
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{
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long ret;
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__asm("mov $30, %0" : "=r" (ret));
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return ret;
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}
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#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
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#define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_PC])
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/*
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* Set initial, sane values for registers whose values aren't just
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* "don't care".
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* 0x0008 is ALPHA_PSL_USERSET from arch/alpha/include/alpha_cpu.h
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*/
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#define _INITCONTEXT_U_MD(ucp) \
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(ucp)->uc_mcontext.__gregs[_REG_PS] = 0x0008;
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#define STACKSPACE 32 /* 4 quad values */
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/*
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* Conversions between struct reg and struct mcontext. Used by
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* libpthread_dbg.
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*/
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#define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \
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memcpy(&(reg)->r_regs, &(uc)->uc_mcontext.__gregs, \
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31 * sizeof(__greg_t)); \
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(reg)->r_regs[R_ZERO] = (uc)->uc_mcontext.__gregs[_REG_PC]; \
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} while (/*CONSTCOND*/0)
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#define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \
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memcpy(&(uc)->uc_mcontext.__gregs, &(reg)->r_regs, \
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31 * sizeof(__greg_t)); \
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(uc)->uc_mcontext.__gregs[_REG_PC] = (reg)->r_regs[R_ZERO]; \
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(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \
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} while (/*CONSTCOND*/0)
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#define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \
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memcpy((freg), &(uc)->uc_mcontext.__fpregs, \
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sizeof(struct fpreg)) \
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#define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \
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memcpy(&(uc)->uc_mcontext.__fpregs, (freg), \
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sizeof(struct fpreg)); \
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(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \
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} while (/*CONSTCOND*/0)
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#endif /* _LIB_PTHREAD_ALPHA_MD_H */
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