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1.1 root 1: /*-
2: * Copyright (c) 1990 The Regents of the University of California.
3: * All rights reserved.
4: *
5: * This code is derived from software contributed to Berkeley by
6: * William Jolitz.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: *
1.1.1.2 ! root 36: * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91
! 37: * cpu.h,v 1.9 1993/06/16 22:28:12 jtc Exp
1.1 root 38: */
39:
40: /*
41: * Definitions unique to i386 cpu support.
42: */
43: #include "machine/frame.h"
44: #include "machine/segments.h"
45:
46: /*
47: * definitions of cpu-dependent requirements
48: * referenced in generic code
49: */
1.1.1.2 ! root 50: #define COPY_SIGCODE /* copy sigcode above user stack in exec */
1.1 root 51:
52: /*
53: * function vs. inline configuration;
54: * these are defined to get generic functions
55: * rather than inline or machine-dependent implementations
56: */
57: #define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */
1.1.1.2 ! root 58: #undef NEED_FFS /* need ffs function */
1.1 root 59: #define NEED_BCMP /* need bcmp function */
1.1.1.2 ! root 60: #undef NEED_STRLEN /* need strlen function */
1.1 root 61:
62: #define cpu_exec(p) /* nothing */
63:
64: /*
65: * Arguments to hardclock, softclock and gatherstats
66: * encapsulate the previous machine state in an opaque
67: * clockframe; for now, use generic intrframe.
68: */
69: typedef struct intrframe clockframe;
70:
71: #define CLKF_USERMODE(framep) (ISPL((framep)->if_cs) == SEL_UPL)
72: #define CLKF_BASEPRI(framep) ((framep)->if_ppl == 0)
73: #define CLKF_PC(framep) ((framep)->if_eip)
74:
75: #define resettodr() /* no todr to set */
76:
77: /*
78: * Preempt the current process if in interrupt from user mode,
79: * or after the current trap/syscall if in system mode.
80: */
81: #define need_resched() { want_resched++; aston(); }
82:
83: /*
84: * Give a profiling tick to the current process from the softclock
85: * interrupt. On tahoe, request an ast to send us through trap(),
86: * marking the proc as needing a profiling tick.
87: */
88: #define profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; aston(); }
89:
90: /*
91: * Notify the current process (p) that it has a signal pending,
92: * process as soon as possible.
93: */
94: #define signotify(p) aston()
95:
96: #define aston() (astpending++)
97:
98: int astpending; /* need to trap before returning to user mode */
99: int want_resched; /* resched() was called */
100:
101: /*
1.1.1.2 ! root 102: * pull in #defines for kinds of processors
1.1 root 103: */
1.1.1.2 ! root 104: #include "machine/cputypes.h"
1.1 root 105:
1.1.1.2 ! root 106: struct cpu_nameclass {
! 107: char *cpu_name;
! 108: int cpu_class;
! 109: };
! 110:
! 111: #ifdef KERNEL
! 112: extern int cpu;
! 113: extern int cpu_class;
! 114: extern struct cpu_nameclass i386_cpus[];
! 115: #endif
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