1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* $NetBSD: cpu.h,v 1.35 1996/05/05 19:29:26 christos Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
*
* @(#)cpu.h 5.4 (Berkeley) 5/9/91
*/
#ifndef _I386_CPU_H_
#define _I386_CPU_H_
/*
* Definitions unique to i386 cpu support.
*/
#include <machine/psl.h>
#include <machine/frame.h>
#include <machine/segments.h>
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define cpu_swapin(p) /* nothing */
#define cpu_wait(p) /* nothing */
/*
* Arguments to hardclock, softclock and statclock
* encapsulate the previous machine state in an opaque
* clockframe; for now, use generic intrframe.
*
* XXX intrframe has a lot of gunk we don't need.
*/
#define clockframe intrframe
#define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags)
#define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0)
#define CLKF_PC(frame) ((frame)->if_eip)
#define CLKF_INTR(frame) (IDXSEL((frame)->if_cs) == GICODE_SEL)
/*
* 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, setsoftast())
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the i386, 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, setsoftast())
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
#define signotify(p) setsoftast()
/*
* We need a machine-independent name for this.
*/
#define DELAY(x) delay(x)
void delay __P((int));
#ifdef I586_CPU
/*
* High resolution clock support (Pentium only)
*/
void calibrate_cyclecounter __P((void));
extern u_quad_t pentium_base_tsc;
#define CPU_CLOCKUPDATE(otime, ntime) \
do { \
if (pentium_mhz) { \
__asm __volatile("cli\n" \
"movl (%3), %%eax\n" \
"movl %%eax, (%2)\n" \
"movl 4(%3), %%eax\n" \
"movl %%eax, 4(%2)\n" \
".byte 0xf, 0x31\n" \
"sti\n" \
"#%0 %1 %2 %3" \
: "=m" (*otime), \
"=A" (pentium_base_tsc) \
: "c" (otime), "b" (ntime)); \
} \
else { \
*(otime) = *(ntime); \
} \
} while (0)
#endif
void delay __P((int));
/*
* pull in #defines for kinds of processors
*/
#include <machine/cputypes.h>
struct cpu_nameclass {
char *cpu_name;
int cpu_class;
};
#ifdef _KERNEL
extern int cpu;
extern int cpu_class;
extern struct cpu_nameclass i386_cpus[];
#ifdef I586_CPU
extern int pentium_mhz;
#endif
/* autoconf.c */
void configure __P((void));
/* machdep.c */
void delay __P((int));
void dumpconf __P((void));
void cpu_reset __P((void));
/* locore.s */
struct region_descriptor;
void lgdt __P((struct region_descriptor *));
void fillw __P((short, void *, size_t));
short fusword __P((u_short *));
int susword __P((u_short *t, u_short));
struct pcb;
void savectx __P((struct pcb *));
void switch_exit __P((struct proc *));
void proc_trampoline __P((void));
/* clock.c */
void startrtclock __P((void));
/* npx.c */
void npxdrop __P((void));
void npxsave __P((void));
#if defined(MATH_EMULATE) || defined(GPL_MATH_EMULATE)
/* math_emulate.c */
int math_emulate __P((struct trapframe *));
#endif
#ifdef USER_LDT
/* sys_machdep.h */
void i386_user_cleanup __P((struct pcb *));
int i386_get_ldt __P((struct proc *, char *, register_t *));
int i386_set_ldt __P((struct proc *, char *, register_t *));
#endif
/* isa_machdep.c */
void isa_defaultirq __P((void));
int isa_nmi __P((void));
/* vm_machdep.c */
int kvtop __P((caddr_t));
#ifdef VM86
/* vm86.c */
void vm86_gpfault __P((struct proc *, int));
#endif /* VM86 */
/* trap.c */
void child_return __P((struct proc *, struct trapframe));
#ifdef GENERIC
/* swapgeneric.c */
void setconf __P((void));
#endif /* GENERIC */
#endif /* _KERNEL */
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_BIOSDEV 2 /* int: BIOS boot device */
#define CPU_BIOSGEOMETRY 3 /* int: BIOS boot device geometry */
#define CPU_CNVMEM 4 /* int: amount of conventional memory */
#define CPU_EXTMEM 5 /* int: amount of extended memory */
#define CPU_MAXID 6 /* number of valid machdep ids */
#define CTL_MACHDEP_NAMES { \
{ 0, 0 }, \
{ "console_device", CTLTYPE_STRUCT }, \
{ "biosdev", CTLTYPE_INT }, \
{ "biosgeo", CTLTYPE_INT }, \
{ "cnvmem", CTLTYPE_INT }, \
{ "extmem", CTLTYPE_INT }, \
}
#endif /* !_I386_CPU_H_ */
|
