160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
/*-
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Ralph Campbell and Rick Macklem.
|
|
*
|
|
* 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.
|
|
*
|
|
* from: @(#)cpu.h 8.4 (Berkeley) 1/4/94
|
|
* $Id: cpu.h,v 1.7 1994/06/02 06:15:03 glass Exp $
|
|
*/
|
|
|
|
#ifndef _CPU_H_
|
|
#define _CPU_H_
|
|
|
|
#include <machine/machConst.h>
|
|
|
|
/*
|
|
* Exported definitions unique to pmax/mips cpu support.
|
|
*/
|
|
|
|
/*
|
|
* definitions of cpu-dependent requirements
|
|
* referenced in generic code
|
|
*/
|
|
#define COPY_SIGCODE /* copy sigcode above user stack in exec */
|
|
|
|
#define cpu_exec(p) (p->p_md.md_ss_addr = 0) /* init single step */
|
|
#define cpu_wait(p) /* nothing */
|
|
#define cpu_set_init_frame(p, fp) /* nothing */
|
|
|
|
/*
|
|
* Arguments to hardclock and gatherstats encapsulate the previous
|
|
* machine state in an opaque clockframe.
|
|
*/
|
|
struct clockframe {
|
|
int pc; /* program counter at time of interrupt */
|
|
int sr; /* status register at time of interrupt */
|
|
};
|
|
|
|
#define CLKF_USERMODE(framep) ((framep)->sr & MACH_SR_KU_PREV)
|
|
#define CLKF_BASEPRI(framep) \
|
|
((~(framep)->sr & (MACH_INT_MASK | MACH_SR_INT_ENA_PREV)) == 0)
|
|
#define CLKF_PC(framep) ((framep)->pc)
|
|
#define CLKF_INTR(framep) (0)
|
|
|
|
/*
|
|
* Preempt the current process if in interrupt from user mode,
|
|
* or after the current trap/syscall if in system mode.
|
|
*/
|
|
#define need_resched() { want_resched = 1; aston(); }
|
|
|
|
/*
|
|
* Give a profiling tick to the current process when the user profiling
|
|
* buffer pages are invalid. On the PMAX, 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; aston(); }
|
|
|
|
/*
|
|
* Notify the current process (p) that it has a signal pending,
|
|
* process as soon as possible.
|
|
*/
|
|
#define signotify(p) aston()
|
|
|
|
#define aston() (astpending = 1)
|
|
|
|
int astpending; /* need to trap before returning to user mode */
|
|
int want_resched; /* resched() was called */
|
|
|
|
/*
|
|
* CPU identification, from PRID register.
|
|
*/
|
|
union cpuprid {
|
|
int cpuprid;
|
|
struct {
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
u_int pad1:16; /* reserved */
|
|
u_int cp_imp:8; /* implementation identifier */
|
|
u_int cp_majrev:4; /* major revision identifier */
|
|
u_int cp_minrev:4; /* minor revision identifier */
|
|
#else
|
|
u_int cp_minrev:4; /* minor revision identifier */
|
|
u_int cp_majrev:4; /* major revision identifier */
|
|
u_int cp_imp:8; /* implementation identifier */
|
|
u_int pad1:16; /* reserved */
|
|
#endif
|
|
} cpu;
|
|
};
|
|
|
|
/*
|
|
* CTL_MACHDEP definitions.
|
|
*/
|
|
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
|
|
#define CPU_MAXID 2 /* number of valid machdep ids */
|
|
|
|
#define CTL_MACHDEP_NAMES { \
|
|
{ 0, 0 }, \
|
|
{ "console_device", CTLTYPE_STRUCT }, \
|
|
}
|
|
|
|
/*
|
|
* MIPS CPU types (cp_imp).
|
|
*/
|
|
#define MIPS_R2000 0x01
|
|
#define MIPS_R3000 0x02
|
|
#define MIPS_R6000 0x03
|
|
#define MIPS_R4000 0x04
|
|
#define MIPS_R6000A 0x06
|
|
|
|
/*
|
|
* MIPS FPU types
|
|
*/
|
|
#define MIPS_R2010 0x02
|
|
#define MIPS_R3010 0x03
|
|
#define MIPS_R6010 0x04
|
|
#define MIPS_R4010 0x05
|
|
|
|
#ifdef KERNEL
|
|
union cpuprid cpu;
|
|
union cpuprid fpu;
|
|
u_int machDataCacheSize;
|
|
u_int machInstCacheSize;
|
|
extern struct intr_tab intr_tab[];
|
|
#endif
|
|
|
|
/*
|
|
* Enable realtime clock (always enabled).
|
|
*/
|
|
#define enablertclock()
|
|
|
|
#endif /* _CPU_H_ */
|