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PRIVATE void initialize(void)
{
register struct priv *sp;
int i;
/* 初始化所有的irq_hooks为NONE 未被使用 */
for (i=0; i<NR_IRQ_HOOKS; i++) {
irq_hooks[i].proc_nr_e = NONE;
}
/* 初始化所有的特权结构体中的alarm timer */
for (sp=BEG_PRIV_ADDR; sp < END_PRIV_ADDR; sp++) {
tmr_inittimer(&(sp->s_alarm_timer));
}
/* 初始化所有的system calls为unused
*/
for (i=0; i<NR_SYS_CALLS; i++) {
call_vec[i] = do_unused;
}
/* 进程管理相关的系统调用. */
map(SYS_FORK, do_fork); /*a process forked a new process */
map(SYS_EXEC, do_exec); /* update process after execute*/
map(SYS_EXIT, do_exit); /* clean up after process exit */
map(SYS_NICE, do_nice); /* set scheduling priority*/
map(SYS_PRIVCTL, do_privctl); /* system privileges control*/
map(SYS_TRACE, do_trace); /* request a trace operation*/
/* 信号处理. */
map(SYS_KILL, do_kill); /* cause a process to be signaled */
map(SYS_GETKSIG, do_getksig); /* PM checks for pending signals */
map(SYS_ENDKSIG, do_endksig); /* PM finished processing signal */
map(SYS_SIGSEND, do_sigsend); /* start POSIX-style signal */
map(SYS_SIGRETURN, do_sigreturn); /* return from POSIX-style signal */
/* I/O设备. */
map(SYS_IRQCTL, do_irqctl); /* interrupt control operations */
map(SYS_DEVIO, do_devio); /* inb, inw, inl, outb, outw, outl */
map(SYS_SDEVIO, do_sdevio); /* phys_insb, _insw, _outsb, _outsw */
map(SYS_VDEVIO, do_vdevio); /* vector with devio requests */
map(SYS_INT86, do_int86); /* real-mode BIOS calls */
/* 内存管理. */
map(SYS_NEWMAP, do_newmap); /* set up a process memory map */
map(SYS_SEGCTL, do_segctl); /* add segment and get selector */
map(SYS_MEMSET, do_memset); /* write char to memory area */
map(SYS_VM_SETBUF, do_vm_setbuf); /* PM passes buffer for page tables */
map(SYS_VM_MAP, do_vm_map); /* Map/unmap physical (device) memory */
/* 内存间拷贝. */
map(SYS_UMAP, do_umap); /* map virtual to physical address */
map(SYS_VIRCOPY, do_vircopy); /* use pure virtual addressing */
map(SYS_PHYSCOPY, do_physcopy); /* use physical addressing */
map(SYS_VIRVCOPY, do_virvcopy); /* vector with copy requests */
map(SYS_PHYSVCOPY, do_physvcopy); /* vector with copy requests */
/* 时钟功能. */
map(SYS_TIMES, do_times); /* get uptime and process times */
map(SYS_SETALARM, do_setalarm); /* schedule a synchronous alarm */
/*系统控制. */
map(SYS_ABORT, do_abort); /* abort MINIX */
map(SYS_GETINFO, do_getinfo); /* request system information */
map(SYS_IOPENABLE, do_iopenable); /* Enable I/O */
}
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