gets.asm

很少见的源码公开的msc51和z80的c编译器。

;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.3.0 Thu Sep 20 10:57:19 2001

;--------------------------------------------------------
	.module gets
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _gets
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
;--------------------------------------------------------
; overlayable items in internal ram 
;--------------------------------------------------------
	.area OSEG    (OVR,DATA)
;--------------------------------------------------------
; indirectly addressable internal ram data
;--------------------------------------------------------
	.area ISEG    (DATA)
;--------------------------------------------------------
; bit data
;--------------------------------------------------------
	.area BSEG    (BIT)
;--------------------------------------------------------
; external ram data
;--------------------------------------------------------
	.area XSEG    (XDATA)
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area GSINIT  (CODE)
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area HOME	 (CODE)
	.area CSEG    (CODE)
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area CSEG    (CODE)
;------------------------------------------------------------
;Allocation info for local variables in function 'gets'
;------------------------------------------------------------
;s                         Allocated to registers r2 r3 r4 
;c                         Allocated to registers r7 
;count                     Allocated to registers r5 r6 
;	gets.c 3
;	-----------------------------------------
;	 function gets
;	-----------------------------------------
_gets:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	gets.c 0
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
;	gets.c 5
	mov	r5,#0x00
	mov	r6,#0x00
;	gets.c 7
00109$:
;	gets.c 8
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	lcall	_getchar
	mov	r7,dpl
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 9
	cjne	r7,#0x08,00118$
; Peephole 132   changed ljmp to sjmp
	sjmp 00103$
00118$:
	cjne	r7,#0x0A,00119$
	ljmp	00104$
00119$:
	cjne	r7,#0x0D,00120$
	ljmp	00104$
00120$:
	ljmp	00106$
;	gets.c 18
00103$:
;	gets.c 11
	mov	a,r5
	orl	a,r6
; Peephole 110   removed ljmp by inverse jump logic
	jz  00109$
00121$:
;	gets.c 12
	mov	dpl,#0x08
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	lcall	_putchar
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 13
	mov	dpl,#0x20
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	lcall	_putchar
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 14
	mov	dpl,#0x08
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	lcall	_putchar
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 15
	dec	r2
	cjne	r2,#0xff,00122$
	dec	r3
00122$:
;	gets.c 16
	dec	r5
	cjne	r5,#0xff,00123$
	dec	r6
00123$:
;	gets.c 18
	ljmp	00109$
;	gets.c 21
00104$:
	mov	dpl,#0x0D
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	lcall	_putchar
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 22
	mov	dpl,#0x0A
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	lcall	_putchar
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 23
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
; Peephole 180   changed mov to clr
	clr  a
	lcall	__gptrput
;	gets.c 24
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
;	gets.c 26
; Peephole 132   changed ljmp to sjmp
	sjmp 00111$
00106$:
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r7
	lcall	__gptrput
	inc	dptr
	mov	r2,dpl
	mov	r3,dph
;	gets.c 27
	inc	r5
	cjne	r5,#0x00,00124$
	inc	r6
00124$:
;	gets.c 28
	mov	dpl,r7
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	lcall	_putchar
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	gets.c 30
	ljmp	00109$
00111$:
	ret
	.area CSEG    (CODE)