51 lines
606 B
ArmAsm
51 lines
606 B
ArmAsm
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.define _brk
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.define _sbrk
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.extern _brk
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.text
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_brk:
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tst.b -40(sp)
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link a6,#-0
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move.l 8(a6),-(sp)
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jsr __Sbrk
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add.l #4,sp
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unlk a6
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rts
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.extern _sbrk
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_sbrk:
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tst.b -40(sp)
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link a6,#-0
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move.w 8(a6), d2
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ext.l d2
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move.l d2,-(sp)
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jsr __Ssbrk
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add.l #4,sp
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unlk a6
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rts
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__Ssbrk: tst.b -8(sp)
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move.l 4(sp),d0
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beq 1f
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add.l nd,d0
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move.l d0,-(sp)
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clr.l -(sp)
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trap #0
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.short 0x11
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add.l #8,sp
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bcc 1f
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jmp cerror
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1:
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move.l nd,d0
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move.l 4(sp),d1
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add.l d1,nd
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rts
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__Sbrk: trap #0
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.short 0x11
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bcc 1f
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jmp cerror
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1:
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move.l 4(sp),nd
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clr.l d0
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rts
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.data
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nd: .long endbss
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.text
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