Sweden-Number/loader/ldt.c

90 lines
2.1 KiB
C

#ifndef WINELIB
static char RCSId[] = "$Id: ldt.c,v 1.2 1993/07/04 04:04:21 root Exp root $";
static char Copyright[] = "Copyright Robert J. Amstadt, 1993";
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "prototypes.h"
#if defined(__NetBSD__) || defined(__FreeBSD__)
#include <machine/segments.h>
#endif
/**********************************************************************
* print_ldt
*/
/* XXX These are *real* 386 descriptors !! */
void
print_ldt()
{
char buffer[0x10000];
unsigned long *lp;
unsigned long base_addr, limit;
int type, dpl, i;
#if defined(__NetBSD__) || defined(__FreeBSD__)
struct segment_descriptor *sd;
#endif
if (get_ldt(buffer) < 0)
exit(1);
lp = (unsigned long *) buffer;
#if defined(__NetBSD__) || defined(__FreeBSD__)
sd = (struct segment_descriptor *) buffer;
#endif
for (i = 0; i < 32; i++, lp++)
{
/* First 32 bits of descriptor */
base_addr = (*lp >> 16) & 0x0000FFFF;
limit = *lp & 0x0000FFFF;
lp++;
/* First 32 bits of descriptor */
base_addr |= (*lp & 0xFF000000) | ((*lp << 16) & 0x00FF0000);
limit |= (*lp & 0x000F0000);
#ifdef linux
type = (*lp >> 10) & 5;
dpl = (*lp >> 13) & 3;
#endif
#if defined(__NetBSD__) || defined(__FreeBSD__)
type = sd->sd_type;
dpl = sd->sd_dpl;
sd++;
#endif
if (*lp & 1000)
{
printf("Entry %2d: Base %08.8x, Limit %05.5x, DPL %d, Type %d\n",
i, base_addr, limit, dpl, type);
printf(" ");
if (*lp & 0x100)
printf("Accessed, ");
if (*lp & 8000)
printf("Present, ");
if (*lp & 0x100000)
printf("User, ");
if (*lp & 0x200000)
printf("X, ");
if (*lp & 0x400000)
printf("32, ");
else
printf("16, ");
if (*lp & 0x800000)
printf("page limit, ");
else
printf("byte limit, ");
printf("\n");
printf(" %08.8x %08.8x\n", *(lp), *(lp-1));
}
else
{
printf("Entry %2d: Base %08.8x, Limit %05.5x, DPL %d, Type %d\n",
i, base_addr, limit, dpl, type);
printf(" SYSTEM: %08.8x %08.8x\n", *lp, *(lp-1));
}
}
}
#endif /* ifndef WINELIB */