35 lines
571 B
NASM
35 lines
571 B
NASM
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.section data $0x0 {
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number: .u8 $10
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main:
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; Test subtraction
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mov %status, $1
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mov %r0, (number)u8
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sub %r0, $1
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cmpeq %r0, $9
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jz end
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; Test subtraction from a register
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mov %status, $2
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mov %r1, $2
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sub %r0, %r1
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cmpeq %r0, $7
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jz end
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; Test subtraction overflow
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mov %status, $3
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sub %r0, $8
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cmpeq %r0, $0xFFFFFFFFFFFFFFFF
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jz end
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mov %status, $0
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end:
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halt
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.export main
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}
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.meta {
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entry: main
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}
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