_strspn.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 10:57:40 2001

;--------------------------------------------------------
	.module _strspn
	
.flat24 on		; 24 bit flat addressing
dpx = 0x93		; dpx register unknown to assembler
dps = 0x86		; dps register unknown to assembler
dpl1 = 0x84		; dpl1 register unknown to assembler
dph1 = 0x85		; dph1 register unknown to assembler
dpx1 = 0x95		; dpx1 register unknown to assembler
ap = 0x9C		; ap register unknown to assembler
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _strspn_PARM_2
	.globl _strspn
;--------------------------------------------------------
; 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)
_strspn_PARM_2::
	.ds 4
_strspn_string_1_1::
	.ds 4
_strspn_count_1_1::
	.ds 2
_strspn_sloc0_1_0::
	.ds 1
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area GSINIT  (CODE)
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area HOME	 (CODE)
	.area CSEG    (CODE)
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area CSEG    (CODE)
;	_strspn.c 27
;	genFunction 
;	-----------------------------------------
;	 function strspn
;	-----------------------------------------
_strspn:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_strspn.c 43
;	genReceive 
	push	b
	push	dpx
	push	dph
	push	dpl
	mov	dptr,#_strspn_string_1_1
	pop	acc
	movx	@dptr,a
	pop	acc
	inc	dptr
	movx	@dptr,a
	pop	acc
	inc	dptr
	movx	@dptr,a
	pop	acc
	inc	dptr
	movx	@dptr,a
;	_strspn.c 35
;	genAssign 
	mov	dptr,#_strspn_PARM_2
;	genAssign: resultIsFar = FALSE
	movx	a,@dptr
	mov	r6,a
	inc	dptr
	movx	a,@dptr
	mov	r7,a
	inc	dptr
	movx	a,@dptr
	mov	r0,a
	inc	dptr
	movx	a,@dptr
	mov	r1,a
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#_strspn_count_1_1
	clr	a
	movx	@dptr,a
	inc	dptr
	movx	@dptr,a
;	genAssign 
	mov	dptr,#_strspn_string_1_1
;	genAssign: resultIsFar = TRUE
;	genFarFarAssign (390 auto-toggle fun)
	mov	dps, #0x21
	mov	dptr,#_strspn_string_1_1
	movx	a,@dptr
	movx	@dptr,a
	inc	dptr
	inc	dptr
	movx	a,@dptr
	movx	@dptr,a
	inc	dptr
	inc	dptr
	movx	a,@dptr
	movx	@dptr,a
	inc	dptr
	inc	dptr
	movx	a,@dptr
	movx	@dptr,a
	mov	dps, #0
;	genLabel 
00104$:
;	genPointerGet 
;	genGenPointerGet 
	mov     dps, #0x01
	mov     dptr, #_strspn_string_1_1
	movx	a,@dptr
	dec	dps
	mov	dpl,a
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	mov	dph,a
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	mov	dpx,a
	inc	dps
	inc	dptr
	movx	a,@dptr
	mov	b,a
; Peephole 220a removed bogus DPS set
	mov	dps, #0x01
	mov	dptr, #_strspn_sloc0_1_0
	dec	dps
	lcall	__gptrget
	mov	dps, #0x01
	movx	@dptr,a
	mov	dps, #0x00
;	genAssign 
	mov	dptr,#_strspn_sloc0_1_0
;	genAssign: resultIsFar = TRUE
;	genFarFarAssign (1 byte case)
	movx	a,@dptr
	mov	r2,a
;	genIfx 
	mov	dptr,#_strspn_sloc0_1_0
	movx	a,@dptr
;	genIfxJump 
	jnz	00112$
	ljmp	00106$
00112$:
;	_strspn.c 36
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#_strchr_PARM_2
	mov	a,r2
	movx	@dptr,a
;	genCall 
	push	ar6
	push	ar7
	push	ar0
	push	ar1
	mov	dpl,r6
	mov	dph,r7
	mov	dpx,r0
	mov	b,r1
	lcall	_strchr
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
	pop	ar1
	pop	ar0
	pop	ar7
	pop	ar6
;	genIfx 
;	toBoolean: generic ptr special case.
	mov	a,r2
	orl	a,r3
	orl	a,r4
;	genIfxJump 
; Peephole 110   removed ljmp by inverse jump logic
	jz  00106$
00113$:
;	_strspn.c 37
;	genPlus 
	mov	dptr,#_strspn_count_1_1
;	Swapped plus args.
	movx	a,@dptr
	add	a,#0x01
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
;	_strspn.c 40
;	genPlus 
	mov	dptr,#_strspn_string_1_1
;	Swapped plus args.
	movx	a,@dptr
	add	a,#0x01
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	movx	@dptr,a
;	genGoto 
	ljmp	00104$
;	genLabel 
00106$:
;	_strspn.c 43
;	genRet 
	mov     dps, #0x01
	mov     dptr, #_strspn_count_1_1
	movx	a,@dptr
	mov	dpl,a
	inc	dptr
	movx	a,@dptr
	mov	dph,a
	mov	dps, #0x00
;	genLabel 
00107$:
;	genEndFunction 
	ret
	.area CSEG    (CODE)