33 lines
448 B
ArmAsm
33 lines
448 B
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss
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.sect .text
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.define .sti
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.define .sts
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! #bytes in cx
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! address in bx
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! save di/si. they might be register variables
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.sts:
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mov dx,di ! save di
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mov di,bx
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pop bx
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sar cx,1
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jnb 1f
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pop ax
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stosb
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mov di,dx
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jmp bx
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.sti:
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! only called with count > 4
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mov dx,di
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mov di,bx
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pop bx
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sar cx,1
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1:
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mov ax,si
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mov si,sp
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rep movs
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mov sp,si
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mov di,dx
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mov si,ax
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jmp bx
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