066d1e09a4
WHAT'S NEW with version 0.0.3:
- Fixed bug with sector sizes.
- Registers at program startup are now set correctly.
- Segment fixups for relocatable-segment internal entry points.
- Fixed bug in DOS PSP structure.
- Some resource loading is done.
- Added "return" ordinal type to build program.
- Added comment capability to build program.
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
static char RCSId[] = "$Id: ldt.c,v 1.1 1993/06/29 15:55:18 root Exp $";
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static char Copyright[] = "Copyright Robert J. Amstadt, 1993";
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <linux/unistd.h>
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#include <linux/head.h>
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#include <linux/ldt.h>
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#include "prototypes.h"
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/**********************************************************************
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* print_ldt
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*/
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void
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print_ldt()
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{
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char buffer[0x10000];
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struct modify_ldt_ldt_s ldt_info;
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unsigned long *lp;
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unsigned long base_addr, limit;
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int type, dpl, i;
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if (get_ldt(buffer) < 0)
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exit(1);
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lp = (unsigned long *) buffer;
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for (i = 0; i < 32; i++, lp++)
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{
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/* First 32 bits of descriptor */
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base_addr = (*lp >> 16) & 0x0000FFFF;
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limit = *lp & 0x0000FFFF;
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lp++;
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/* First 32 bits of descriptor */
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base_addr |= (*lp & 0xFF000000) | ((*lp << 16) & 0x00FF0000);
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limit |= (*lp & 0x000F0000);
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type = (*lp >> 9) & 7;
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dpl = (*lp >> 13) & 3;
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if (*lp & 1000)
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{
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printf("Entry %2d: Base %08.8x, Limit %05.5x, DPL %d, Type %d\n",
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i, base_addr, limit, dpl, type);
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printf(" ");
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if (*lp & 0x100)
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printf("Accessed, ");
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if (*lp & 8000)
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printf("Present, ");
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if (*lp & 0x100000)
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printf("User, ");
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if (*lp & 0x200000)
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printf("X, ");
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if (*lp & 0x400000)
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printf("32, ");
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else
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printf("16, ");
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if (*lp & 0x800000)
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printf("page limit, ");
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else
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printf("byte limit, ");
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printf("\n");
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printf(" %08.8x %08.8x\n", *(lp), *(lp-1));
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}
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else
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{
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printf("Entry %2d: Base %08.8x, Limit %05.5x, DPL %d, Type %d\n",
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i, base_addr, limit, dpl, type);
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printf(" SYSTEM: %08.8x %08.8x\n", *lp, *(lp-1));
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}
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}
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}
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