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/*
* Copyright (c) 1996 Nivas Madhur
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
#ifndef _CPU_H_
#define _CPU_H_
/*
* CTL_MACHDEP definitinos.
*/
#define CPU_MAXID 1 /* no valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
}
#ifdef _KERNEL
#include <machine/psl.h>
#include <machine/pcb.h>
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define COPY_SIGCODE /* copy sigcode above user stack in exec */
#define cpu_exec(p) /* nothing */
#define cpu_wait(p) /* nothing */
#define cpu_swapout(p) /* nothing */
/*
* Arguments to hardclock and gatherstats encapsulate the previous
* machine state in an opaque clockframe. CLKF_INTR is only valid
* if the process is in kernel mode. Clockframe is really trapframe,
* so pointer to clockframe can be safely cast into a pointer to
* trapframe.
*/
struct clockframe {
struct trapframe tf;
};
extern intstack;
#define CLKF_USERMODE(framep) ((((struct trapframe *)(framep))->epsr & 80000000) == 0)
#define CLKF_BASEPRI(framep) (((struct trapframe *)(framep))->mask == 0)
#define CLKF_PC(framep) (((struct trapframe *)(framep))->sxip & ~3)
#define CLKF_INTR(framep) (((struct trapframe *)(framep))->r[31] > intstack)
#define SIR_NET 1
#define SIR_CLOCK 2
#define setsoftnet() (ssir |= SIR_NET)
#define setsoftclock() (ssir |= SIR_CLOCK)
#define siroff(x) (ssir &= ~x)
int ssir;
int want_ast;
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
int want_resched; /* resched() was called */
#define need_resched() (want_resched = 1, want_ast = 1)
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the sparc, request an ast to send us
* through trap(), marking the proc as needing a profiling tick.
*/
#define need_proftick(p) ((p)->p_flag |= P_OWEUPC, want_ast = 1)
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
#define signotify(p) (want_ast = 1)
struct intrhand {
int (*ih_fn)();
void *ih_arg;
int ih_ipl;
int ih_wantframe;
struct intrhand *ih_next;
};
int intr_establish __P((int vec, struct intrhand *));
/*
* return values for intr_establish()
*/
#define INTR_EST_SUCC 0
#define INTR_EST_BADVEC 1
#define INTR_EST_BADIPL 2
/*
* There are 256 possible vectors on a MVME1x7 platform (including
* onboard and VME vectors. Use intr_establish() to register a
* handler for the given vector. vector number is used to index
* into the intr_handlers[] table.
*/
extern struct intrhand *intr_handlers[256];
/*
* switchframe - should be double word aligned.
*/
struct switchframe {
u_int sf_pc; /* pc */
void *sf_proc; /* proc pointer */
};
#endif /* _KERNEL */
#endif /* _CPU_H_ */
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