26 lines
300 B
ArmAsm
26 lines
300 B
ArmAsm
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.sect .text; .sect .rom; .sect .data; .sect .bss; .sect .text
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.define __sbrk
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.extern __sbrk, xbrk, cerror
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__sbrk:
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push bp
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mov bp,sp
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mov ax,4(bp)
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mov bx,(np)
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add ax,bx
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mov cx,sp
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sub cx,128
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sub cx,ax
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jbe 1f
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mov (np),ax
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sub ax,bx
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jbe 2f
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call xbrk
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2:
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mov ax,bx
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pop bp
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ret
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1:
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mov ax,0xc
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pop bp
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jmp cerror
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