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/************************************************************************/
/* This file contains the BCC compiler helper functions */
/* (C) Prentice Hall (Minix) http://www.cs.vu.nl/~ast/minix.html */
/* Miscellaneous obsolete junk
* __inport.o __inportb.o __outport.o __outportb.o __peekb.o __peekw.o
* __pokeb.o __pokew.o
*/
#ifdef __AS368_16__
#if !__FIRST_ARG_IN_AX__
#asm
.text ! This is common to all.
.even
#endasm
/************************************************************************/
/* Function inport */
#ifdef L___inport
#asm
! int inport( int port );
! reads a word from the i/o port port and returns it
.globl _inport
_inport:
pop bx
pop dx
dec sp
dec sp
inw
jmp bx
#endasm
#endif
/************************************************************************/
/* Function inportb */
#ifdef L___inportb
#asm
! int inportb( int port );
! reads a byte from the i/o port port and returns it
.globl _inportb
_inportb:
pop bx
pop dx
dec sp
dec sp
in
sub ah,ah
jmp bx
#endasm
#endif
/************************************************************************/
/* Function outport */
#ifdef L___outport
#asm
! void outport( int port, int value );
! writes the word value to the i/o port port
.globl _outport
_outport:
pop bx
pop dx
pop ax
sub sp,*4
outw
jmp bx
#endasm
#endif
/************************************************************************/
/* Function outportb */
#ifdef L___outportb
#asm
! void oportb( int port, char value );
! writes the byte value to the i/o port port
! this would be outportb except for feeble linkers
.globl _oportb
_oportb:
pop bx
pop dx
pop ax
sub sp,*4
out
jmp bx
#endasm
#endif
/************************************************************************/
/* Function peekb */
#ifdef L___peekb
#asm
! int peekb( unsigned segment, char *offset );
! returns the (unsigned) byte at the far pointer segment:offset
.define _peekb
_peekb:
mov cx,ds
pop dx
pop ds
pop bx
sub sp,*4
movb al,(bx)
subb ah,ah
mov ds,cx
jmp dx
#endasm
#endif
/************************************************************************/
/* Function peekw */
#ifdef L___peekw
#asm
! int peekw( unsigned segment, int *offset );
! returns the word at the far pointer segment:offset
.define _peekw
_peekw:
mov cx,ds
pop dx
pop ds
pop bx
sub sp,*4
mov ax,(bx)
mov ds,cx
jmp dx
#endasm
#endif
/************************************************************************/
/* Function pokeb */
#ifdef L___pokeb
#asm
! void pokeb( unsigned segment, char *offset, char value );
! writes the byte value at the far pointer segment:offset
.define _pokeb
_pokeb:
mov cx,ds
pop dx
pop ds
pop bx
pop ax
sub sp,*6
movb (bx),al
mov ds,cx
jmp dx
#endasm
#endif
/************************************************************************/
/* Function pokew */
#ifdef L___pokew
#asm
! void pokew( unsigned segment, int *offset, int value );
! writes the word value at the far pointer segment:offset
.define _pokew
_pokew:
mov cx,ds
pop dx
pop ds
pop bx
pop ax
sub sp,*6
mov (bx),ax
mov ds,cx
jmp dx
#endasm
#endif
#endif /* !__FIRST_ARG_IN_AX__ */
#endif
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