78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/***************************************************************************
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* File : dosdcc.h
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* Purpose : include file for files decompiled by dcc.
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* Copyright (c) Cristina Cifuentes - QUT - 1992
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**************************************************************************/
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/* Type definitions for intel 80x86 architecture */
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typedef unsigned int uint16_t; /* 16 bits */
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typedef unsigned char uint8_t; /* 8 bits */
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typedef union {
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unsigned long dW;
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uint16_t wL, wH; /* 2 words */
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} Dword; /* 32 bits */
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/* Structure to access high and low bits of a uint8_t or uint16_t variable */
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typedef struct {
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/* low uint8_t */
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uint16_t lowBitWord : 1;
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uint16_t filler1 : 6;
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uint16_t highBitByte : 1;
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/* high uint8_t */
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uint16_t lowBitByte : 1;
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uint16_t filler2 : 6;
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uint16_t highBitWord : 1;
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} wordBits;
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/* Low and high bits of a uint8_t or uint16_t variable */
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#define lowBit(a) ((wordBits)(a).lowBitWord)
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#define highBitByte(a) ((wordBits)(a).highBitByte)
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#define lowBitByte(a) ((wordBits)(a).lowBitByte)
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#define highBit(a) (sizeof(a) == sizeof(uint16_t) ? \
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((wordBits)(a).highBitWord):\
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((wordBits)(a).highBitByte))
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/* uint16_t register variables */
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#define ax regs.x.ax
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#define bx regs.x.bx
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#define cx regs.x.cx
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#define dx regs.x.dx
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#define cs regs.x.cs
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#define es regs.x.es
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#define ds regs.x.ds
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#define ss regs.x.ss
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#define si regs.x.si
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#define di regs.x.di
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#define bp regs.x.bp
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#define sp regs.x.sp
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/* getting rid of all flags */
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#define carry regs.x.cflags
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#define overF regs.x.flags /***** check *****/
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/* uint8_t register variables */
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#define ah regs.h.ah
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#define al regs.h.al
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#define bh regs.h.bh
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#define bl regs.h.bl
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#define ch regs.h.ch
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#define cl regs.h.cl
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#define dh regs.h.dh
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#define dl regs.h.dl
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/* High and low words of a Dword */
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#define highWord(w) (*((uint16_t*)&(w) + 1))
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#define lowWord(w) ((uint16_t)(w))
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#define MAXByte 0xFF
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#define MAXWord 0xFFFF
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#define MAXSignByte 0x7F
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#define MINSignByte 0x81
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#define MAXSignWord 0x7FFF
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#define MINSignWord 0x8001
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