ack/mach/m68k4/libem/shp.s

31 lines
469 B
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.define .strhp
.sect .text
.sect .rom
.sect .data
.sect .bss
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.sect .text
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.strhp:
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move.l 4(sp), d1 ! new heap pointer
cmp.l .limhp, d1
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blt 1f
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add.l #0x400, d1
and.l #~0x3ff, d1
move.l d1, .limhp
move.l d1, -(sp)
jsr _brk ! allocate 1K bytes of extra storage
add.l #4, sp
bcs 2f
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1:
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move.l 4(sp), .reghp ! store new value of heap pointer
move.l (sp)+,a0
move.l a0,(sp)
rts
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2:
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move.l #EHEAP, -(sp)
jsr .trp
move.l (sp)+,a0
move.l a0,(sp)
rts
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.align 2