31 lines
543 B
ArmAsm
31 lines
543 B
ArmAsm
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.define Los
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! This subroutine perfoms the LOS instruction.
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! For detail see rapport IR-81.
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Los:
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cmp #0
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bne 3f
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cpx #1
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bne 1f ! the size is one
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jsr Pop ! get address
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jsr Loi1 ! push it on the stack
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jmp Push
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1: cpx #2
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bne 2f ! the size is two
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jsr Pop ! get address
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jsr Loi ! push it on the stack
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jmp Push
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2: cpx #4
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bne 3f ! the size is four
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jsr Pop ! get address
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jmp Ldi ! push it on the stack
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3: sta ARTH+1 ! the size is greater than four
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txa
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tay
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jsr Pop ! get address
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jmp Loil ! push it on the stack
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