oracle汇编01
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1: / define numeric label "1"
one: / define symbolic label "one"
/ ... assembler code ...
jmp 1f / jump to first numeric label "1" defined
/ after this instruction
/ (this reference is equivalent to label "two")
jmp 1b / jump to last numeric label "1" defined
/ before this instruction
/ (this reference is equivalent to label "one")
1: / redefine label "1"
two: / define symbolic label "two"
jmp 1b / jump to last numeric label "1" defined
/ before this instruction
/ (this reference is equivalent to label "two")
2.There are fve classes of tokens:
■ Identifers (symbols)
■ Keywords
■ Numerical constants
■ String Constants
■ Operators
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