98ddbffe6e
- it can disassemble object files (dis386o) and executables
(dis386a)
- only useful for as long as we still have ack
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/* const.h - constants for db.
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*
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* $Id: const.h,v 1.0 1990/10/06 12:00:00 cwr Exp cwr $
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*/
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/* general constants */
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#define FALSE 0
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#undef NULL
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#define NULL 0
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#define TRUE 1
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/* C tricks */
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#define EXTERN extern
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#define FORWARD static
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#define PRIVATE static
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#define PUBLIC
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/* ASCII codes */
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#define CAN 24
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#define CR 13
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#define EOF (-1)
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#define LF 10
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#define XOFF 19
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/* hardware processor-specific for 8088 through 80386 */
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#ifndef HCLICK_SIZE
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#define HCLICK_SIZE 0x10
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#endif
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#define IF 0x0200 /* interrupt disable bit in flags */
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#define INT_BREAKPOINT 0xCC /* byte for breakpoint interrupt */
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#define LINEARADR(seg, off) \
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(HCLICK_SIZE * (physoff_t) (segment_t) (seg) + (off))
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#define TF 0x0100 /* trap bit in flags */
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/* hardware processor-specific for 80386 and emulated for others */
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#define BS 0x4000 /* single-step bit in dr6 */
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/* use hardware codes for segments for simplest decoding */
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#define CSEG 0x2E /* 8088 through 80386 */
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#define DSEG 0x3E
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#define ESEG 0x26
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#define FSEG 0x64
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#define GSEG 0x65 /* 80386 only */
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#define SSEG 0x36
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/* software machine-specific for PC family */
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#define BIOS_DATA_SEG 0x40
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# define KB_FLAG 0x17 /* offset to 16-bits of keyboard shift flags */
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/* switches to handle non-conforming compilers */
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#define UCHAR_BUG /* compiler converts unsigned chars wrong */
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#ifdef UCHAR_BUG
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# define UCHAR(x) ((x) & 0xFF)
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#endif
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