f2a85e58d9
* Removed some variants of the SYS_GETINFO calls from the kernel; replaced them with new PM and utils libary functionality. Fixed bugs in utils library that used old get_kenv() variant. * Implemented a buffer in the kernel to gather random data. Memory driver periodically checks this for /dev/random. A better random algorithm can now be implemented in the driver. Removed SYS_RANDOM; the SYS_GETINFO call is used instead. * Remove SYS_KMALLOC from the kernel. Memory allocation can now be done at the process manager with new 'other' library functions.
67 lines
2.7 KiB
C
Executable file
67 lines
2.7 KiB
C
Executable file
/* Global variables used in the kernel. This file contains the declarations;
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* storage space for the variables is allocated in table.c, because EXTERN is
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* defined as extern unless the _TABLE definition is seen. We rely on the
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* compiler's default initialization (0) for several global variables.
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*/
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#ifdef _TABLE
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#undef EXTERN
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#define EXTERN
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#endif
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#include <minix/config.h>
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/* Variables relating to shutting down MINIX. */
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EXTERN char kernel_exception; /* TRUE after system exceptions */
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EXTERN char shutting_down; /* TRUE if shutting down */
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EXTERN struct proc *shutdown_process; /* process awaiting shutdown of */
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EXTERN timer_t shutdown_timer; /* timer for watchdog function */
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/* Kernel information structures. This groups vital kernel information. */
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EXTERN phys_bytes aout; /* address of a.out headers */
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EXTERN struct kinfo kinfo; /* kernel information for users */
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EXTERN struct machine machine; /* machine information for users */
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EXTERN struct kmessages kmess; /* diagnostic messages in kernel */
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EXTERN struct randomness krandom; /* gather kernel random information */
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EXTERN struct memory mem[NR_MEMS]; /* base and size of chunks of memory */
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/* Process scheduling information and the kernel reentry count. */
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EXTERN struct proc *proc_ptr; /* pointer to currently running process */
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EXTERN struct proc *next_ptr; /* pointer to next process to run */
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EXTERN char k_reenter; /* kernel reentry count (entry count less 1) */
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EXTERN unsigned lost_ticks; /* clock ticks counted outside clock task */
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/* Declare buffer space and a bit map for notification messages. */
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EXTERN struct notification notify_buffer[NR_NOTIFY_BUFS];
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EXTERN bitchunk_t notify_bitmap[BITMAP_CHUNKS(NR_NOTIFY_BUFS)];
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#if (CHIP == INTEL)
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/* Interrupt related variables. */
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EXTERN irq_hook_t irq_hooks[NR_IRQ_HOOKS]; /* hooks for general use */
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EXTERN irq_hook_t *irq_handlers[NR_IRQ_VECTORS];/* list of IRQ handlers */
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EXTERN int irq_actids[NR_IRQ_VECTORS]; /* IRQ ID bits active */
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EXTERN int irq_use; /* map of all in-use irq's */
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/* Data structure to store lock() timing data. */
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#if ENABLE_LOCK_TIMING
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EXTERN struct lock_timedata timingdata[TIMING_CATEGORIES];
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#endif
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/* Miscellaneous. */
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EXTERN reg_t mon_ss, mon_sp; /* boot monitor stack */
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EXTERN int mon_return; /* true if we can return to monitor */
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/* Variables that are initialized elsewhere are just extern here. */
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extern struct system_image image[]; /* system image processes */
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extern char *t_stack[]; /* task stack space */
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extern struct segdesc_s gdt[]; /* global descriptor table */
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EXTERN _PROTOTYPE( void (*level0_func), (void) );
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#endif /* (CHIP == INTEL) */
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#if (CHIP == M68000)
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/* M68000 specific variables go here. */
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#endif
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