131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/* $NetBSD: cpu.h,v 1.1 1995/02/13 23:07:33 cgd Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: cpu.h 1.16 91/03/25$
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*
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* @(#)cpu.h 8.4 (Berkeley) 1/5/94
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*/
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#ifndef _ALPHA_CPU_H_
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#define _ALPHA_CPU_H_
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/*
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* Exported definitions unique to Alpha cpu support.
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*/
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#include <machine/frame.h>
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/*
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* definitions of cpu-dependent requirements
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* referenced in generic code
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*/
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#define COPY_SIGCODE /* copy sigcode above user stack in exec */
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#define cpu_exec(p) /* nothing XXX? */
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#define cpu_wait(p) /* nothing */
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#define cpu_setstack(p, ap) (p)->p_addr->u_pcb.pcb_usp
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#define cpu_set_init_frame(p, fp) (p)->p_md.md_tf = fp
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/*
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* Arguments to hardclock and gatherstats encapsulate the previous
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* machine state in an opaque clockframe. One the Alpha, we use
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* what we push on an interrupt (a trapframe).
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*/
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struct clockframe {
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struct trapframe cf_tf;
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};
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#define CLKF_USERMODE(framep) (((framep)->cf_tf.tf_ps & PSL_U) != 0)
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#define CLKF_BASEPRI(framep) (((framep)->cf_tf.tf_ps & PSL_IPL) == 0)
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#define CLKF_PC(framep) ((framep)->cf_tf.tf_pc)
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/*
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* XXX No way to accurately tell if we were in interrupt mode before taking
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* clock interrupt.
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*/
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#define CLKF_INTR(framep) (0)
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/*
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* Preempt the current process if in interrupt from user mode,
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* or after the current trap/syscall if in system mode.
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*/
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#define need_resched() { want_resched = 1; aston(); }
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/*
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* Give a profiling tick to the current process when the user profiling
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* buffer pages are invalid. On the hp300, request an ast to send us
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* through trap, marking the proc as needing a profiling tick.
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*/
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#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
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/*
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* Notify the current process (p) that it has a signal pending,
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* process as soon as possible.
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*/
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#define signotify(p) aston()
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#define aston() (astpending = 1)
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u_int64_t astpending; /* need to trap before returning to user mode */
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u_int64_t want_resched; /* resched() was called */
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/*
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* simulated software interrupt register
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*/
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extern u_int64_t ssir;
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#define SIR_NET 0x1
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#define SIR_CLOCK 0x2
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#define siroff(x) ssir &= ~(x)
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#define setsoftnet() ssir |= SIR_NET
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#define setsoftclock() ssir |= SIR_CLOCK
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/*
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* CTL_MACHDEP definitions.
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*/
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#define CPU_CONSDEV 1 /* dev_t: console terminal device */
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#define CPU_MAXID 2 /* number of valid machdep ids */
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#define CTL_MACHDEP_NAMES { \
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{ 0, 0 }, \
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{ "console_device", CTLTYPE_STRUCT }, \
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}
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#endif /* _ALPHA_CPU_H_ */
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