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90587a41 | 1 | /* |
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2 | * Copyright (c) 1992, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
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4 | * |
5 | * This software was developed by the Computer Systems Engineering group | |
6 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and | |
7 | * contributed to Berkeley. | |
8 | * | |
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9 | * All advertising materials mentioning features or use of this software |
10 | * must display the following acknowledgement: | |
11 | * This product includes software developed by the University of | |
062bb472 | 12 | * California, Lawrence Berkeley Laboratory. |
b480239a | 13 | * |
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14 | * Redistribution and use in source and binary forms, with or without |
15 | * modification, are permitted provided that the following conditions | |
16 | * are met: | |
17 | * 1. Redistributions of source code must retain the above copyright | |
18 | * notice, this list of conditions and the following disclaimer. | |
19 | * 2. Redistributions in binary form must reproduce the above copyright | |
20 | * notice, this list of conditions and the following disclaimer in the | |
21 | * documentation and/or other materials provided with the distribution. | |
22 | * 3. All advertising materials mentioning features or use of this software | |
23 | * must display the following acknowledgement: | |
24 | * This product includes software developed by the University of | |
25 | * California, Berkeley and its contributors. | |
26 | * 4. Neither the name of the University nor the names of its contributors | |
27 | * may be used to endorse or promote products derived from this software | |
28 | * without specific prior written permission. | |
29 | * | |
30 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
31 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
32 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
33 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
34 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
35 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
36 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
37 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
38 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
39 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
40 | * SUCH DAMAGE. | |
90587a41 | 41 | * |
ad787160 | 42 | * @(#)cpu.h 8.1 (Berkeley) 6/11/93 |
90587a41 | 43 | * |
42158806 | 44 | * from: $Header: cpu.h,v 1.12 93/05/25 10:36:34 torek Exp $ (LBL) |
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45 | */ |
46 | ||
47 | #ifndef _CPU_H_ | |
48 | #define _CPU_H_ | |
49 | ||
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50 | /* |
51 | * CTL_MACHDEP definitinos. | |
52 | */ | |
53 | #define CPU_MAXID 1 /* no valid machdep ids */ | |
54 | ||
55 | #define CTL_MACHDEP_NAMES { \ | |
56 | { 0, 0 }, \ | |
57 | } | |
90587a41 | 58 | |
42158806 | 59 | #ifdef KERNEL |
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60 | /* |
61 | * Exported definitions unique to SPARC cpu support. | |
62 | */ | |
63 | ||
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64 | #include <machine/psl.h> |
65 | #include <sparc/sparc/intreg.h> | |
66 | ||
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67 | /* |
68 | * definitions of cpu-dependent requirements | |
69 | * referenced in generic code | |
70 | */ | |
71 | #define COPY_SIGCODE /* copy sigcode above user stack in exec */ | |
72 | ||
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73 | #define cpu_exec(p) /* nothing */ |
74 | #define cpu_wait(p) /* nothing */ | |
75 | #define cpu_setstack(p, ap) ((p)->p_md.md_tf->tf_out[6] = (ap) - 64) | |
76 | ||
77 | /* | |
78 | * Arguments to hardclock, softclock and gatherstats encapsulate the | |
79 | * previous machine state in an opaque clockframe. The ipl is here | |
80 | * as well for strayintr (see locore.s:interrupt and intr.c:strayintr). | |
81 | * Note that CLKF_INTR is valid only if CLKF_USERMODE is false. | |
82 | */ | |
83 | struct clockframe { | |
84 | u_int psr; /* psr before interrupt, excluding PSR_ET */ | |
85 | u_int pc; /* pc at interrupt */ | |
86 | u_int npc; /* npc at interrupt */ | |
87 | u_int ipl; /* actual interrupt priority level */ | |
88 | u_int fp; /* %fp at interrupt */ | |
89 | }; | |
90 | ||
91 | extern int eintstack[]; | |
92 | ||
93 | #define CLKF_USERMODE(framep) (((framep)->psr & PSR_PS) == 0) | |
94 | #define CLKF_BASEPRI(framep) (((framep)->psr & PSR_PIL) == 0) | |
95 | #define CLKF_PC(framep) ((framep)->pc) | |
96 | #define CLKF_INTR(framep) ((framep)->fp < (u_int)eintstack) | |
97 | ||
98 | /* | |
99 | * Software interrupt request `register'. | |
100 | */ | |
101 | union sir { | |
102 | int sir_any; | |
103 | char sir_which[4]; | |
104 | } sir; | |
105 | ||
106 | #define SIR_NET 0 | |
107 | #define SIR_CLOCK 1 | |
108 | ||
109 | #define setsoftint() ienab_bis(IE_L1) | |
110 | #define setsoftnet() (sir.sir_which[SIR_NET] = 1, setsoftint()) | |
111 | #define setsoftclock() (sir.sir_which[SIR_CLOCK] = 1, setsoftint()) | |
112 | ||
113 | int want_ast; | |
114 | ||
115 | /* | |
116 | * Preempt the current process if in interrupt from user mode, | |
117 | * or after the current trap/syscall if in system mode. | |
118 | */ | |
119 | int want_resched; /* resched() was called */ | |
120 | #define need_resched() (want_resched = 1, want_ast = 1) | |
121 | ||
122 | /* | |
123 | * Give a profiling tick to the current process when the user profiling | |
124 | * buffer pages are invalid. On the sparc, request an ast to send us | |
125 | * through trap(), marking the proc as needing a profiling tick. | |
126 | */ | |
127 | #define need_proftick(p) ((p)->p_flag |= SOWEUPC, want_ast = 1) | |
128 | ||
129 | /* | |
130 | * Notify the current process (p) that it has a signal pending, | |
131 | * process as soon as possible. | |
132 | */ | |
133 | #define signotify(p) (want_ast = 1) | |
134 | ||
135 | /* | |
136 | * Only one process may own the FPU state. | |
137 | * | |
138 | * XXX this must be per-cpu (eventually) | |
139 | */ | |
140 | struct proc *fpproc; /* FPU owner */ | |
141 | int foundfpu; /* true => we have an FPU */ | |
142 | ||
143 | /* | |
144 | * Interrupt handler chains. Interrupt handlers should return 0 for | |
145 | * ``not me'' or 1 (``I took care of it''). intr_establish() inserts a | |
146 | * handler into the list. The handler is called with its (single) | |
147 | * argument, or with a pointer to a clockframe if ih_arg is NULL. | |
148 | */ | |
149 | struct intrhand { | |
150 | int (*ih_fun) __P((void *)); | |
151 | void *ih_arg; | |
152 | struct intrhand *ih_next; | |
153 | } *intrhand[15]; | |
154 | ||
155 | void intr_establish __P((int level, struct intrhand *)); | |
156 | ||
157 | /* | |
158 | * intr_fasttrap() is a lot like intr_establish, but is used for ``fast'' | |
159 | * interrupt vectors (vectors that are not shared and are handled in the | |
160 | * trap window). Such functions must be written in assembly. | |
161 | */ | |
162 | void intr_fasttrap __P((int level, void (*vec)(void))); | |
163 | ||
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164 | #endif /* KERNEL */ |
165 | #endif /* _CPU_H_ */ |