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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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30
kernel/utility.c
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@@ -1,5 +1,5 @@
/* This file contains a collection of miscellaneous procedures:
* panic: abort MINIX due to a fatal error
* minix_panic: abort MINIX due to a fatal error
* kprintf: (from lib/sysutil/kprintf.c)
* kputc: buffered putc used by kernel kprintf
*/
@@ -9,26 +9,32 @@
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <minix/sysutil.h>
#include <minix/sys_config.h>
/*===========================================================================*
* panic *
* minix_panic *
*===========================================================================*/
PUBLIC void panic(mess,nr)
_CONST char *mess;
PUBLIC void minix_panic(mess,nr)
char *mess;
int nr;
{
/* The system has run aground of a fatal kernel error. Terminate execution. */
static int panicking = 0;
if (panicking ++) return; /* prevent recursive panics */
if (minix_panicing ++) return; /* prevent recursive panics */
if (mess != NULL) {
kprintf("\nKernel panic: %s", mess);
if (nr != NO_NUM) kprintf(" %d", nr);
kprintf("kernel panic: %s", mess);
if(nr != NO_NUM)
kprintf(" %d", nr);
kprintf("\n");
kprintf("kernel stacktrace: ");
util_stacktrace();
}
/* Abort MINIX. */
prepare_shutdown(RBT_PANIC);
minix_shutdown(NULL);
}
@@ -36,6 +42,7 @@ int nr;
#define printf kprintf
#include "../lib/sysutil/kprintf.c"
#define END_OF_KMESS 0
/*===========================================================================*
@@ -54,11 +61,12 @@ int c; /* character to append */
ser_putc(c);
}
kmess.km_buf[kmess.km_next] = c; /* put normal char in buffer */
if (kmess.km_size < KMESS_BUF_SIZE)
if (kmess.km_size < sizeof(kmess.km_buf))
kmess.km_size += 1;
kmess.km_next = (kmess.km_next + 1) % KMESS_BUF_SIZE;
kmess.km_next = (kmess.km_next + 1) % _KMESS_BUF_SIZE;
} else {
int p, outprocs[] = OUTPUT_PROCS_ARRAY;
if(minix_panicing) return;
for(p = 0; outprocs[p] != NONE; p++) {
if(isokprocn(outprocs[p]) && !isemptyn(outprocs[p])) {
send_sig(outprocs[p], SIGKMESS);