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The Very Best of Atari Inside
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osbind.s
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1992-06-28
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1KB
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55 lines
; Lovingly swiped from Eric Smith's mntlib.
; Pure C version 13-6-92 um
.globl gemdos
.globl xbios
.globl bios
.text
.even
gemdos:
lea 20(sp),a0 ; 4 bytes for ret addr + 16 for parameters
movem.l a2,-(sp) ; save reggie that TOS clobbers but that
; PureC thinks functions should preserve
move.l -(a0),-(sp) ; max. of 16 bytes parameters to trap #1
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.w d0, -(sp) ; function number passed in d0
trap #1 ; go do the trap
lea 16+2(sp),sp ; pop parameters
movem.l (sp)+,a2 ; restore reggie
rts ; return
bios:
lea 24(sp),a0
movem.l a2,-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.w d0, -(sp)
trap #13
lea 20+2(sp),sp
movem.l (sp)+,a2
rts
xbios:
lea 32(sp),a0
movem.l a2,-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.l -(a0),-(sp)
move.w d0, -(sp)
trap #14
lea 28+2(sp),sp
movem.l (sp)+,a2
rts
.end