strngcpy.$

坦尼保姆

 

.SECT .TEXT
stcstart:			!  1
	PUSH mesg1		!  2
	PUSH mesg2		!  3
	CALL strngcpy		!  4
	ADD  SP,4		!  5
	PUSH 0			!  6
	PUSH 1			!  7
	SYS			!  8
strngcpy:			!  9
	PUSH CX			! 10
	PUSH SI			! 11
	PUSH DI			! 12
	PUSH BP			! 13
	MOV  BP,SP		! 14
	MOV  AX,0		! 15
	MOV  DI,10(BP)		! 16
	MOV  CX,-1		! 17
	REPNZ SCASB		! 18
	NEG  CX			! 19
	DEC CX			! 20
	MOV  SI,10(BP)		! 21
	MOV  DI,12(BP)		! 22
	PUSH DI			! 23
	REP  MOVSB		! 24
	CALL stringpr		! 25
	MOV  SP,BP		! 26
	POP  BP			! 27
	POP  DI			! 28
	POP  SI			! 29
	POP  CX			! 30
	RET			! 31
.SECT .DATA			! 32
mesg1: .ASCIZ "Have a look\n"	! 33
mesg2: .ASCIZ "qrst\n"		! 34
_EXIT	   =	  1	! seven system call numbers
_READ	   =	  3
_WRITE	   =	  4
_OPEN	   =	  5
_CLOSE	   =	  6
_CREAT	   =	  8
_LSEEK	   =	 19
_GETCHAR   =	117	! five system subroutine numbers
_SPRINTF   =	121
_PUTCHAR   =	122
_SSCANF	   =	125
_PRINTF	   =	127
STDIN	   =	  0	! three initially opened file descriptors
STDOUT	   =	  1
STDERR	   =	  2
.SECT .TEXT		! Definition of section header labels
TxtSecHd:
.SECT .DATA
DatSecHd:
.SECT .TEXT
.SECT .TEXT
stpstart:			!  1
	PUSH msg1		!  2
	CALL stringpr		!  3
	PUSH msg2		!  4
	CALL stringpr		!  5
	ADD  SP,4		!  6
	PUSH 0			!  7
	PUSH 1			!  8
	SYS			!  9
stringpr:			! 10
	PUSH CX			! 11
	PUSH SI			! 12
	PUSH DI			! 13
	PUSH BP			! 14
	MOV  BP,SP		! 15
	MOV  AX,0		! 16
	MOV  DI,10(BP)		! 17
	MOV  SI,DI		! 18
	MOV  CX,-1		! 19
	REPNZ SCASB		! 20
	! INC  CX			! 21
	NOT  CX			! 22
	DEC  CX
	MOV  DI,strpribf	! 23
	PUSH CX			! 24
	PUSH DI			! 25
	PUSH STDOUT		! 26
	PUSH _WRITE		! 27
	REP  MOVSB		! 28
	STOSB			! 29
	SYS			! 30
	MOV  SP,BP		! 31
	POP  BP			! 32
	POP  DI			! 33
	POP  SI			! 34
	POP  CX			! 35
	RET			! 36
.SECT .DATA			! 37
.SECT .BSS			! 38
strpribf:			! 39
	.SPACE 88		! 40
.SECT .DATA			! 41
msg1: .ASCIZ "Look here msg1\n"	! 42
msg2: .ASCIZ "And msg 2\n"	! 43