27 lines
470 B
ArmAsm
27 lines
470 B
ArmAsm
.define .strhp
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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EHEAP=17
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.sect .text
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.strhp:
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move.l (sp)+, a0
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move.l (sp), d1 ! new heap pointer
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cmp.l (.limhp), d1 ! compare new heap pointer with limit
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blt 1f
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add.l #0x400, d1
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and.l #~0x3ff, d1
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move.l d1, -(sp)
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jsr (__brk) ! allocate 1K bytes of extra storage
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bcs 2f
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move.l (sp)+,(.limhp)
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1:
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move.l (sp)+, (.reghp) ! store new value
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jmp (a0) ! return
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2:
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move.l #EHEAP, -(sp)
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jsr (.trp)
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jmp (a0)
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.align 2
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