ispunct.mac

一个c语言编译器源代码.small-c-for-dos源代码.里面包含基本的库函数

 INCLUDE PROLOG.H
_CC1:
 PUBLIC _ispunct
_ispunct:
 MOV BX,2
 ADD BX,SP
 MOV BX,[BX]
 PUSH BX  ;
 CALL _isalnum
 ADD SP,2
 OR BX,BX
 MOV BX,CX
 JNZ $+3
 INC BX
 OR BX,BX
 JNZ $+5
 JMP _CC3
 MOV BX,2
 ADD BX,SP
 MOV BX,[BX]
 PUSH BX  ;
 CALL _iscntrl
 ADD SP,2
 OR BX,BX
 MOV BX,CX
 JNZ $+3
 INC BX
 OR BX,BX
 JNZ $+5
 JMP _CC3
 MOV BX,1
 JMP _CC4
_CC3:
 MOV BX,0
_CC4:
 RET
 EXTRN _isalnum:NEAR
 EXTRN _iscntrl:NEAR
 INCLUDE EPILOG.H
 END