oracle汇编01

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

原文地址：https://www.cnblogs.com/xpylovely/p/10935805.html