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/************************************************************************/
/* This file contains the BCC compiler helper functions */
/* (C) Copyright Bruce Evans */
/* Support for integer arithmetic
* __idiv.o __idivu.o __imod.o __imodu.o __imul.o __isl.o __isr.o __isru.o
*/
#ifdef __AS386_16__
#asm
.text ! This is common to all.
.even
#endasm
/************************************************************************/
/* Function idiv */
#ifdef L___idiv
#asm
| idiv.s
| idiv_ doesn`t preserve dx (returns remainder in it)
.globl idiv_
idiv_:
cwd
idiv bx
ret
#endasm
#endif
/************************************************************************/
/* Function idivu */
#ifdef L___idivu
#asm
| idivu.s
| idiv_u doesn`t preserve dx (returns remainder in it)
.globl idiv_u
idiv_u:
xor dx,dx
div bx
ret
#endasm
#endif
/************************************************************************/
/* Function imod */
#ifdef L___imod
#asm
| imod.s
| imod doesn`t preserve dx (returns quotient in it)
.globl imod
imod:
cwd
idiv bx
mov ax,dx
ret
#endasm
#endif
/************************************************************************/
/* Function imodu */
#ifdef L___imodu
#asm
| imodu.s
| imodu doesn`t preserve dx (returns quotient in it)
.globl imodu
imodu:
xor dx,dx
div bx
mov ax,dx ! instruction queue full so xchg slower
ret
#endasm
#endif
/************************************************************************/
/* Function imul */
#ifdef L___imul
#asm
| imul.s
| imul_, imul_u don`t preserve dx
.globl imul_
.globl imul_u
imul_:
imul_u:
imul bx
ret
#endasm
#endif
/************************************************************************/
/* Function isl */
#ifdef L___isl
#asm
| isl.s
| isl, islu don`t preserve cl
.globl isl
.globl islu
isl:
islu:
mov cl,bl
shl ax,cl
ret
#endasm
#endif
/************************************************************************/
/* Function isr */
#ifdef L___isr
#asm
| isr.s
| isr doesn`t preserve cl
.globl isr
isr:
mov cl,bl
sar ax,cl
ret
#endasm
#endif
/************************************************************************/
/* Function isru */
#ifdef L___isru
#asm
| isru.s
| isru doesn`t preserve cl
.globl isru
isru:
mov cl,bl
shr ax,cl
ret
#endasm
#endif
#endif
|
