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Basic VM and other minor improvements.

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Not complete, probably not fully debugged or optimized.
This commit is contained in:
Ben Gras
2008-11-19 12:26:10 +00:00
parent c888305e21
commit c078ec0331
273 changed files with 10814 additions and 4305 deletions
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36
kernel/main.c
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@@ -20,7 +20,6 @@
/* Prototype declarations for PRIVATE functions. */
FORWARD _PROTOTYPE( void announce, (void));
FORWARD _PROTOTYPE( void shutdown, (timer_t *));
/*===========================================================================*
* main *
@@ -115,11 +114,11 @@ PUBLIC void main()
hdrindex = 1 + i-NR_TASKS; /* servers, drivers, INIT */
}
/* The bootstrap loader created an array of the a.out headers at
* absolute address 'aout'. Get one element to e_hdr.
/* Architecture-specific way to find out aout header of this
* boot process.
*/
phys_copy(aout + hdrindex * A_MINHDR, vir2phys(&e_hdr),
(phys_bytes) A_MINHDR);
arch_get_aout_headers(hdrindex, &e_hdr);
/* Convert addresses to clicks and build process memory map */
text_base = e_hdr.a_syms >> CLICK_SHIFT;
text_clicks = (e_hdr.a_text + CLICK_SIZE-1) >> CLICK_SHIFT;
@@ -156,8 +155,8 @@ PUBLIC void main()
}
/* Set ready. The HARDWARE task is never ready. */
if (rp->p_nr == HARDWARE) RTS_LOCK_SET(rp, NO_PRIORITY);
RTS_LOCK_UNSET(rp, SLOT_FREE); /* remove SLOT_FREE and schedule */
if (rp->p_nr == HARDWARE) RTS_SET(rp, NO_PRIORITY);
RTS_UNSET(rp, SLOT_FREE); /* remove SLOT_FREE and schedule */
/* Code and data segments must be allocated in protected mode. */
alloc_segments(rp);
@@ -170,6 +169,8 @@ PUBLIC void main()
cprof_procs_no = 0; /* init nr of hash table slots used */
#endif /* CPROFILE */
vm_running = 0;
/* MINIX is now ready. All boot image processes are on the ready queue.
* Return to the assembly code to start running the current process.
*/
@@ -203,34 +204,19 @@ int how;
register struct proc *rp;
message m;
/* Send a signal to all system processes that are still alive to inform
* them that the MINIX kernel is shutting down. A proper shutdown sequence
* should be implemented by a user-space server. This mechanism is useful
* as a backup in case of system panics, so that system processes can still
* run their shutdown code, e.g, to synchronize the FS or to let the TTY
* switch to the first console.
*/
#if DEAD_CODE
kprintf("Sending SIGKSTOP to system processes ...\n");
for (rp=BEG_PROC_ADDR; rp<END_PROC_ADDR; rp++) {
if (!isemptyp(rp) && (priv(rp)->s_flags & SYS_PROC) && !iskernelp(rp))
send_sig(proc_nr(rp), SIGKSTOP);
}
#endif
/* Continue after 1 second, to give processes a chance to get scheduled to
* do shutdown work. Set a watchog timer to call shutdown(). The timer
* argument passes the shutdown status.
*/
kprintf("MINIX will now be shut down ...\n");
tmr_arg(&shutdown_timer)->ta_int = how;
set_timer(&shutdown_timer, get_uptime() + HZ, shutdown);
set_timer(&shutdown_timer, get_uptime() + 5*HZ, minix_shutdown);
}
/*===========================================================================*
* shutdown *
*===========================================================================*/
PRIVATE void shutdown(tp)
PUBLIC void minix_shutdown(tp)
timer_t *tp;
{
/* This function is called from prepare_shutdown or stop_sequence to bring
@@ -239,6 +225,6 @@ timer_t *tp;
*/
intr_init(INTS_ORIG);
clock_stop();
arch_shutdown(tmr_arg(tp)->ta_int);
arch_shutdown(tp ? tmr_arg(tp)->ta_int : RBT_PANIC);
}