/*------------------------------------------------------------------------ * sysinit -- initialize all Xinu data structeres and devices *------------------------------------------------------------------------ */ LOCAL int sysinit() { int i,j; struct pentry *pptr; struct sentry *sptr; struct mblock *mptr; numproc = 0; /* initialize system variables */ nextproc = NPROC-1; nextsem = NSEM-1; nextqueue = NPROC; /* q[0..NPROC-1] are processes */ /* initialize free memory list */ /* PC version has to pre-allocate 640K-1024K "hole" */ if (maxaddr+1 > (char *)HOLESTART) { memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = (struct mblock *)HOLEEND; mptr->mlen = (int) truncew(((unsigned) HOLESTART - (unsigned)&end)); mptr->mlen -= 4; mptr = (struct mblock *) HOLEEND; mptr->mnext = 0; mptr->mlen = (int) truncew((unsigned)maxaddr - HOLEEND - NULLSTK); } else { /* initialize free memory list */ memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = 0; mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end - NULLSTK); } for (i=0 ; i<NPROC ; i++) /* initialize process table */ proctab[i].pstate = PRFREE; pptr = &proctab[NULLPROC]; /* initialize null process entry */ pptr->pstate = PRCURR; for (j=0; j<7; j++) pptr->pname[j] = "prnull"[j]; pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK; pptr->pbase = (WORD) maxaddr - 3; pptr->pesp = pptr->pbase-4; /* for stkchk; rewritten before used */ *( (int *)pptr->pbase ) = MAGIC; pptr->paddr = (WORD) nulluser; pptr->pargs = 0; pptr->pprio = 0; currpid = NULLPROC; for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */ (sptr = &semaph[i])->sstate = SFREE; sptr->sqtail = 1 + (sptr->sqhead = newqueue()); } rdytail = 1 + (rdyhead=newqueue());/* initialize ready list */ #ifdef MEMMARK _mkinit(); /* initialize memory marking */ #endif #ifdef RTCLOCK clkinit(); /* initialize r.t.clock */ #endif pci_init(); /* PCI */ mon_init(); /* init monitor */ // ripinit(); #ifdef NDEVS for (i=0 ; i<NDEVS ; i++ ) { init_dev(i); } #endif buf_init(); return(OK); }
/*------------------------------------------------------------------------ * sysinit -- initialize all Xinu data structeres and devices *------------------------------------------------------------------------ */ LOCAL sysinit() { int i,j,len; struct pentry *pptr; /* null process entry */ struct sentry *sptr; struct mblock *volatile mptr; numproc = 0; /* initialize system variables */ nextproc = NPROC-1; nextsem = NSEM-1; nextqueue = NPROC; /* q[0..NPROC-1] are processes */ memlist.mnext = mptr = /* initialize free memory list */ (struct mblock *volatile) roundmb(__malloc_heap_start); mptr->mnext = (struct mblock *)NULL; mptr->mlen = len = (int) truncmb(RAMEND - NULLSTK - (unsigned)&__bss_end); __malloc_heap_start = (char *)mptr; __malloc_heap_end = __malloc_heap_start + len; kprintf_P(PSTR("Heap: %p of length %d\n"), mptr, len); for (i=0 ; i<NPROC ; i++) /* initialize process table */ proctab[i].pstate = PRFREE; /* initialize null process entry */ pptr = &proctab[NULLPROC]; pptr->pstate = PRCURR; for (j=0; j<6; j++) pptr->pname[j] = "nullp"[j]; pptr->plimit = (unsigned char *)(RAMEND + 1) - NULLSTK; pptr->pbase = (unsigned char *) RAMEND; *pptr->pbase = (unsigned char)MAGIC; /* clobbers return, but proc 0 doesn't return */ pptr->paddr = (int *) main; pptr->pargs = 0; pptr->pprio = 0; pptr->pregs[SSP_L] = lobyte((unsigned int)pptr->plimit); /* for error checking */ pptr->pregs[SSP_H] = hibyte((unsigned int)pptr->plimit); /* for error checking */ currpid = NULLPROC; for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */ (sptr = &semaph[i])->sstate = SFREE; sptr->sqtail = 1 + (sptr->sqhead = newqueue()); } rdytail = 1 + (rdyhead=newqueue()); /* initialize ready list */ #ifdef MEMMARK kprintf("Memory marking\n"); _mkinit(); /* initialize memory marking */ #else kprintf("Pool init\n"); poolinit(); /* explicitly */ pinit(MAXMSGS); #endif #ifdef RTCLOCK kprintf("init RTC\n"); clkinit(); /* initialize r.t.clock */ #endif #ifdef NDEVS for ( i=0 ; i<NDEVS ; i++ ) { if (i>0) kprintf("init dev %d\n", i); init(i); } #endif #ifdef NNETS // kprintf("net init\n"); netinit(); #endif return (OK); }
//------------------------------------------------------------------------ // sysinit -- initialize all Xinu data structures and devices //------------------------------------------------------------------------ static int sysinit(void) { static int (*nulluserp)() = &nulluser; static uword *nulluserpp = (uword *)&nulluserp; struct pentry *pptr; struct mblock *mptr; // initialize system variables numproc = 0; nextproc = NPROC - 1; nextsem = NSEM - 1; nextqueue = NPROC; // q[0..NPROC-1] are processes // initialize free memory list memlist.mnext = mptr = (struct mblock *)roundew(&end); mptr->mnext = (struct mblock *)NULL; mptr->mlen = (uword)truncew((uintptr_t)maxaddr - NULLSTK - (uintptr_t)&end); // initialize process table for (int k = 0; k < NPROC; k++) proctab[k].pstate = PRFREE; // initialize null process entry pptr = &proctab[NULLPROC]; pptr->pstate = PRCURR; pptr->pprio = 0; strlcpy(pptr->pname, "prnull", PNMLEN); pptr->plimit = ((char *)maxaddr) - NULLSTK - sizeof(uword); pptr->pbase = (char *)maxaddr; *((uword *)pptr->pbase) = MAGIC; pptr->paddr = (char *)(*nulluserpp); pptr->phasmsg = FALSE; pptr->pargs = 0; currpid = NULLPROC; // initialize semaphores for (int k = 0; k < NSEM; k++) { struct sentry *sptr = &semaph[k]; sptr->sstate = SFREE; sptr->sqtail = 1 + (sptr->sqhead = newqueue()); } // initialize ready list rdyhead = newqueue(); rdytail = 1 + rdyhead; // initialize memory marking _mkinit(); // initialize r.t.clock clkinit(); // initialize disk buffers dskdbp = mkpool(DBUFSIZ, NDBUFF); dskrbp = mkpool(DREQSIZ, NDREQ); // initialize devices for (int k = 0; k < NDEVS; k++) init(k); return OK; }
/*------------------------------------------------------------------------ * sysinit -- initialize all Xinu data structeres and devices *------------------------------------------------------------------------ */ LOCAL sysinit() { static long currsp; int i,j; struct pentry *pptr; struct sentry *sptr; struct mblock *mptr; numproc = 0; /* initialize system variables */ nextproc = NPROC-1; nextsem = NSEM-1; nextqueue = NPROC; /* q[0..NPROC-1] are processes */ #ifdef X__COM32__ puts_com32("sysinit()\n"); #endif #ifdef __COM32__ /* initialize free memory list */ kprintf("com32topmem %d\n", (unsigned long) com32topmem); com32topmem = com32topmem - 1024*64; /* !!! we need some space fort this code */ maxaddr = (char*) com32topmem; kprintf("maxaddr %d\n", (unsigned long) maxaddr); memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = 0; mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end - NULLSTK); #else /* initialize free memory list */ /* PC version has to pre-allocate 640K-1024K "hole" */ if (maxaddr+1 > HOLESTART) { memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = (struct mblock *)HOLEEND; mptr->mlen = (int) truncew((unsigned) HOLESTART - (unsigned)&end - 4); mptr = (struct mblock *) HOLEEND; mptr->mnext = 0; mptr->mlen = (int) truncew(maxaddr - HOLEEND - NULLSTK); } else { /* initialize free memory list */ memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = 0; mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end - NULLSTK); } #endif #ifdef X__COM32__ puts_com32("sysinit() free memory list done\n"); #endif for (i=0 ; i<NPROC ; i++) /* initialize process table */ proctab[i].pstate = PRFREE; #ifdef X__COM32__ puts_com32("sysinit() proctab done\n"); #endif pptr = &proctab[NULLPROC]; /* initialize null process entry */ pptr->pstate = PRCURR; for (j=0; j<7; j++) pptr->pname[j] = "prnull"[j]; pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK; pptr->pbase = (WORD) maxaddr - 3; pptr->pesp = pptr->pbase-4; /* for stkchk; rewritten before used */ *( (int *)pptr->pbase ) = MAGIC; pptr->paddr = (WORD) nulluser; pptr->pargs = 0; pptr->pprio = 0; currpid = NULLPROC; for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */ (sptr = &semaph[i])->sstate = SFREE; sptr->sqtail = 1 + (sptr->sqhead = newqueue()); } rdytail = 1 + (rdyhead=newqueue());/* initialize ready list */ #ifdef X__COM32__ puts_com32("sysinit() semaphores done\n"); #endif #ifdef MEMMARK _mkinit(); /* initialize memory marking */ #ifdef __COM32__ puts_com32("sysinit() memory marking done\n"); #endif #endif #ifdef RTCLOCK clkinit(); /* initialize r.t.clock */ #ifdef __COM32__ puts_com32("sysinit() rtc done\n"); #endif #endif #ifdef NDEVS for ( i=0 ; i<NDEVS ; i++ ) { init(i); } #ifdef __COM32__ puts_com32("sysinit() devs done\n"); #endif #endif #ifdef NNETS netinit(); #ifdef __COM32__ puts_com32("sysinit() netinit() done\n"); #endif #endif return(OK); }
/*------------------------------------------------------------------------ * sysinit -- initialize all Xinu data structeres and devices *------------------------------------------------------------------------ */ LOCAL sysinit() { static long currsp; int i,j, avail; struct pentry *pptr; struct sentry *sptr; struct mblock *mptr; SYSCALL pfintr(); /*********************/ set_evec(14, pfintr); pptr = &proctab[NULLPROC]; /* initialize null process entry */ /*********************/ numproc = 0; /* initialize system variables */ nextproc = NPROC-1; nextsem = NSEM-1; nextqueue = NPROC; /* q[0..NPROC-1] are processes */ /* initialize free memory list */ /* PC version has to pre-allocate 640K-1024K "hole" */ if (maxaddr+1 > HOLESTART) { memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = (struct mblock *)HOLEEND; mptr->mlen = (int) truncew(((unsigned) HOLESTART - (unsigned)&end)); mptr->mlen -= 4; mptr = (struct mblock *) HOLEEND; mptr->mnext = 0; mptr->mlen = (int) truncew((unsigned)maxaddr - HOLEEND - NULLSTK); /* mptr->mlen = (int) truncew((unsigned)maxaddr - (4096 - 1024 ) * 4096 - HOLEEND - NULLSTK); */ } else { /* initialize free memory list */ memlist.mnext = mptr = (struct mblock *) roundmb(&end); mptr->mnext = 0; mptr->mlen = (int) truncew((unsigned)maxaddr - (int)&end - NULLSTK); } for (i=0 ; i<NPROC ; i++) /* initialize process table */ proctab[i].pstate = PRFREE; #ifdef MEMMARK _mkinit(); /* initialize memory marking */ #endif #ifdef RTCLOCK clkinit(); /* initialize r.t.clock */ #endif mon_init(); /* init monitor */ #ifdef NDEVS for (i=0 ; i<NDEVS ; i++ ) { init_dev(i); } #endif pptr = &proctab[NULLPROC]; /* initialize null process entry */ pptr->pstate = PRCURR; for (j=0; j<7; j++) pptr->pname[j] = "prnull"[j]; pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK; pptr->pbase = (WORD) maxaddr - 3; /* pptr->plimit = (WORD)(maxaddr + 1) - NULLSTK - (4096 - 1024 )*4096; pptr->pbase = (WORD) maxaddr - 3 - (4096-1024)*4096; */ pptr->pesp = pptr->pbase-4; /* for stkchk; rewritten before used */ *( (int *)pptr->pbase ) = MAGIC; pptr->paddr = (WORD) nulluser; pptr->pargs = 0; pptr->pprio = 0; currpid = NULLPROC; for (i=0 ; i<NSEM ; i++) { /* initialize semaphores */ (sptr = &semaph[i])->sstate = SFREE; sptr->sqtail = 1 + (sptr->sqhead = newqueue()); } rdytail = 1 + (rdyhead=newqueue());/* initialize ready list */ init_bsm(); init_frm(); kprintf("initialize page tables for null process\n"); init_glb_pgs(glb_pg_tbl_frm_mapping); // init pg dir for proc 0 frame_t *pg_dir = get_free_frame(); init_pg_dir(pg_dir, NULLPROC); pptr->pdbr = pg_dir->frm_num; pptr->pd = pg_dir; return(OK); }