110 lines
3.7 KiB
C
Executable File
110 lines
3.7 KiB
C
Executable File
#ifndef GLO_H
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#define GLO_H
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/* 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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#include <archtypes.h>
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#include "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 shutdown_started; /* TRUE after shutdowns / reboots */
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/* Kernel information structures. This groups vital kernel information. */
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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 loadinfo kloadinfo; /* status of load average */
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/* Process scheduling information and the kernel reentry count. */
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EXTERN struct proc *prev_ptr; /* previously running process */
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EXTERN struct proc *proc_ptr; /* pointer to currently running process */
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EXTERN struct proc *next_ptr; /* next process to run after restart() */
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EXTERN struct proc *bill_ptr; /* process to bill for clock ticks */
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EXTERN struct proc *vmrestart; /* first process on vmrestart queue */
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EXTERN struct proc *vmrequest; /* first process on vmrequest queue */
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EXTERN struct proc *pagefaults; /* first process on pagefault queue */
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EXTERN struct proc *softnotify; /* first process on softnotify queue */
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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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/* 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 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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EXTERN u32_t system_hz; /* HZ value */
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EXTERN struct ipc_stats
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{
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unsigned long deadproc;
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unsigned long bad_endpoint;
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unsigned long dst_not_allowed;
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unsigned long bad_call;
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unsigned long call_not_allowed;
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unsigned long bad_buffer;
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unsigned long deadlock;
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unsigned long not_ready;
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unsigned long src_died;
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unsigned long dst_died;
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unsigned long no_priv;
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unsigned long bad_size;
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unsigned long bad_senda;
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u64_t total;
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} ipc_stats;
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extern endpoint_t ipc_stats_target;
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EXTERN struct system_stats
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{
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unsigned long bad_req;
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unsigned long not_allowed;
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u64_t total;
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} sys_stats;
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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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EXTERN int do_serial_debug;
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EXTERN endpoint_t who_e; /* message source endpoint */
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EXTERN int who_p; /* message source proc */
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EXTERN int sys_call_code; /* kernel call number in SYSTEM */
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EXTERN time_t boottime;
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EXTERN char params_buffer[512]; /* boot monitor parameters */
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EXTERN int minix_panicing;
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EXTERN int locklevel;
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EXTERN unsigned long cr3switch;
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EXTERN unsigned long cr3reload;
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/* VM */
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EXTERN phys_bytes vm_base;
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EXTERN phys_bytes vm_size;
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EXTERN phys_bytes vm_mem_high;
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EXTERN int vm_running;
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EXTERN int must_notify_vm;
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/* Verbose flags (debugging). */
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EXTERN int verbose_vm;
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/* Timing measurements. */
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EXTERN struct lock_timingdata timingdata[TIMING_CATEGORIES];
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/* Variables that are initialized elsewhere are just extern here. */
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extern struct boot_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 /* GLO_H */
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