projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| af5295ff KM |
1 | /* |
| 2 | * Copyright (c) 1992 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Ralph Campbell and Kazumasa Utashiro of Software Research | |
| 7 | * Associates, Inc. | |
| 8 | * | |
| 9 | * %sccs.include.redist.c% | |
| 10 | * | |
| 11 | * @(#)cpu.h 7.1 (Berkeley) %G% | |
| 12 | */ | |
| 13 | ||
| 14 | #ifndef _CPU_H_ | |
| 15 | #define _CPU_H_ | |
| 16 | ||
| 17 | #include "machConst.h" | |
| 18 | ||
| 19 | /* | |
| 20 | * Exported definitions unique to pmax/mips cpu support. | |
| 21 | */ | |
| 22 | ||
| 23 | /* | |
| 24 | * definitions of cpu-dependent requirements | |
| 25 | * referenced in generic code | |
| 26 | */ | |
| 27 | #undef COPY_SIGCODE /* copy sigcode above user stack in exec */ | |
| 28 | ||
| 29 | /* | |
| 30 | * function vs. inline configuration; | |
| 31 | * these are defined to get generic functions | |
| 32 | * rather than inline or machine-dependent implementations | |
| 33 | */ | |
| 34 | #define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */ | |
| 35 | #define NEED_FFS /* don't need ffs function */ | |
| 36 | #undef NEED_BCMP /* don't need bcmp function */ | |
| 37 | #undef NEED_STRLEN /* don't need strlen function */ | |
| 38 | ||
| 39 | #define cpu_exec(p) (p->p_md.md_ss_addr = 0) /* init single step */ | |
| 40 | #define cpu_wait(p) /* nothing */ | |
| 41 | #define cpu_setstack(p, ap) \ | |
| 42 | (p)->p_md.md_regs[SP] = ap | |
| 43 | ||
| 44 | /* | |
| 45 | * Arguments to hardclock, softclock and gatherstats | |
| 46 | * encapsulate the previous machine state in an opaque | |
| 47 | * clockframe; | |
| 48 | */ | |
| 49 | typedef struct intrframe { | |
| 50 | int pc; | |
| 51 | int ps; | |
| 52 | } clockframe; | |
| 53 | ||
| 54 | #define CLKF_USERMODE(framep) ((framep)->ps & MACH_SR_KU_PREV) | |
| 55 | #define CLKF_BASEPRI(framep) \ | |
| 56 | (((framep)->ps & (MACH_INT_MASK | MACH_SR_INT_ENA_PREV)) == \ | |
| 57 | (MACH_INT_MASK | MACH_SR_INT_ENA_PREV)) | |
| 58 | #define CLKF_PC(framep) ((framep)->pc) | |
| 59 | ||
| 60 | /* | |
| 61 | * Preempt the current process if in interrupt from user mode, | |
| 62 | * or after the current trap/syscall if in system mode. | |
| 63 | */ | |
| 64 | #define need_resched() { want_resched = 1; aston(); } | |
| 65 | ||
| 66 | /* | |
| 67 | * Give a profiling tick to the current process from the softclock | |
| 68 | * interrupt. | |
| 69 | */ | |
| 70 | #define profile_tick(p, framep) \ | |
| 71 | addupc((framep)->pc, &p->p_stats->p_prof, 1); | |
| 72 | ||
| 73 | /* | |
| 74 | * Notify the current process (p) that it has a signal pending, | |
| 75 | * process as soon as possible. | |
| 76 | */ | |
| 77 | #define signotify(p) aston() | |
| 78 | ||
| 79 | #define aston() (astpending = 1) | |
| 80 | ||
| 81 | int astpending; /* need to trap before returning to user mode */ | |
| 82 | int want_resched; /* resched() was called */ | |
| 83 | ||
| 84 | /* | |
| 85 | * CPU identification, from PRID register. | |
| 86 | */ | |
| 87 | union cpuprid { | |
| 88 | int cpuprid; | |
| 89 | struct { | |
| 90 | #if BYTE_ORDER == BIG_ENDIAN | |
| 91 | u_int pad1:16; /* reserved */ | |
| 92 | u_int cp_imp:8; /* implementation identifier */ | |
| 93 | u_int cp_majrev:4; /* major revision identifier */ | |
| 94 | u_int cp_minrev:4; /* minor revision identifier */ | |
| 95 | #else | |
| 96 | u_int cp_minrev:4; /* minor revision identifier */ | |
| 97 | u_int cp_majrev:4; /* major revision identifier */ | |
| 98 | u_int cp_imp:8; /* implementation identifier */ | |
| 99 | u_int pad1:16; /* reserved */ | |
| 100 | #endif | |
| 101 | } cpu; | |
| 102 | }; | |
| 103 | ||
| 104 | /* | |
| 105 | * MIPS CPU types (cp_imp). | |
| 106 | */ | |
| 107 | #define MIPS_R2000 0x01 | |
| 108 | #define MIPS_R3000 0x02 | |
| 109 | #define MIPS_R6000 0x03 | |
| 110 | #define MIPS_R4000 0x04 | |
| 111 | #define MIPS_R6000A 0x06 | |
| 112 | ||
| 113 | /* | |
| 114 | * MIPS FPU types | |
| 115 | */ | |
| 116 | #define MIPS_R2010_FPU 0x02 | |
| 117 | #define MIPS_R3010_FPU 0x03 | |
| 118 | #define MIPS_R6010_FPU 0x04 | |
| 119 | #define MIPS_R4000_FPU 0x05 | |
| 120 | ||
| 121 | struct intr_tab { | |
| 122 | void (*func)(); /* pointer to interrupt routine */ | |
| 123 | int unit; /* logical unit number */ | |
| 124 | }; | |
| 125 | ||
| 126 | #ifdef KERNEL | |
| 127 | union cpuprid cpu; | |
| 128 | union cpuprid fpu; | |
| 129 | u_int machDataCacheSize; | |
| 130 | u_int machInstCacheSize; | |
| 131 | extern struct intr_tab intr_tab[]; | |
| 132 | #endif | |
| 133 | ||
| 134 | #endif /* _CPU_H_ */ |