DOS下保护模式的汇编示范源程序(使用Tasm3.0)

DOS下保护模式的汇编示范源程序(使用Tasm3.0)

;名称:PENTIUM.INC
;功能:符号常量等的定义
;----------------------------------------------------------------------------
;IFNDEF         __PENTIUM_INC
;__PENTIUM_INC  EQU     1
;----------------------------------------------------------------------------
CMPXCHG8B       MACRO   MQ                        ;8字节比较交还指令宏定义,在
                LOCAL   LAB1,LAB2                 ;16位段使用时不支持32位地址
LAB1            =       $
                str     mq
LAB2            =       $
                ORG     LAB1+1
                db      0c7h
                ORG     LAB2
                ENDM
;----------------------------------------------------------------------------
CPUID           MACRO                             ;处理器特征识别指令
                DB      0fh,0a2h
                ENDM
;----------------------------------------------------------------------------
RDTSC           MACRO                             ;读时间标记计数器指令
                DB      0fh,31h
                ENDM
;----------------------------------------------------------------------------
RDMSR           MACRO                             ;读模型专用寄存器指令
                DB      0fh,32h
                ENDM
;----------------------------------------------------------------------------
WRMSR           MACRO                             ;写模型专用寄存器指令
                DB      0fh,30h
                ENDM
;----------------------------------------------------------------------------
RSM             MACRO                             ;从系统管理方式返回指令
                DB      0fh,0aah
                ENDM
;----------------------------------------------------------------------------
;ENDIF