39 lines
514 B
ArmAsm
39 lines
514 B
ArmAsm
.sect .text; .sect .rom; .sect .data; .sect .bss
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.define .cfu
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.sect .text
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.cfu:
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mov bx,sp
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fstcw 4(bx)
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wait
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mov dx,4(bx)
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or 4(bx),0xc00 ! truncating mode
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wait
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fldcw 4(bx)
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cmp 8(bx),4
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jne 2f
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! loc 4 loc ? cfu
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flds 12(bx)
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fabs ! ???
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fiaddl (bigmin)
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fistpl 12(bx)
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wait
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mov ax,12(bx)
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sub ax,(bigmin)
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mov 12(bx),ax
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1:
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mov 4(bx),dx
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wait
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fldcw 4(bx)
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ret
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2:
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! loc 8 loc ? cfu
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fldd 12(bx)
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fabs ! ???
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fiaddl (bigmin)
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fistpl 16(bx)
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mov ax,16(bx)
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sub ax,(bigmin)
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mov 16(bx),ax
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jmp 1b
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