_atoi.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 10:57:32 2001

;--------------------------------------------------------
	.module _atoi
	
.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 _atoi
;--------------------------------------------------------
; 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)
_atoi_s_1_1::
	.ds 4
_atoi_rv_1_1::
	.ds 2
_atoi_sloc0_1_0::
	.ds 2
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area GSINIT  (CODE)
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area HOME	 (CODE)
	.area CSEG    (CODE)
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area CSEG    (CODE)
;	_atoi.c 25
;	genFunction 
;	-----------------------------------------
;	 function atoi
;	-----------------------------------------
_atoi:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_atoi.c 47
;	genReceive 
	push	b
	push	dpx
	push	dph
	push	dpl
	mov	dptr,#_atoi_s_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
;	_atoi.c 27
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#_atoi_rv_1_1
	clr	a
	movx	@dptr,a
	inc	dptr
	movx	@dptr,a
;	_atoi.c 31
;	genAssign 
	mov	dptr,#_atoi_s_1_1
;	genAssign: resultIsFar = TRUE
;	genFarFarAssign
	movx	a,@dptr
	mov	r0,a
	inc	dptr
	movx	a,@dptr
	mov	r1,a
	inc	dptr
	movx	a,@dptr
	mov	r6,a
	inc	dptr
	movx	a,@dptr
	mov	r7,a
;	genLabel 
00107$:
;	genPointerGet 
;	genGenPointerGet 
	mov	dpl,r0
	mov	dph,r1
	mov	dpx,r6
	mov	b,r7
	lcall	__gptrget
;	genIfx 
; Peephole 105   removed redundant mov
	mov  r2,a
;	genIfxJump 
; Peephole 110   removed ljmp by inverse jump logic
	jz  00109$
00133$:
;	_atoi.c 32
;	genCmpGt 
;	genCmp
	clr	c
;	genCmp #1: 0/1/0
;	genCmp #2
;	genCmp #3
; Peephole 159   avoided xrl during execution
	mov  a,#(0x39 ^ 0x80)
;	genCmp #3.2
	mov	b,r2
	xrl	b,#0x80
	subb	a,b
;	genIfxJump 
; Peephole 132   changed ljmp to sjmp
; Peephole 160   removed sjmp by inverse jump logic
	jc   00102$
00134$:
;	genCmpLt 
;	genCmp
	clr	c
;	genCmp #1: 0/1/0
	mov	a,r2
;	genCmp #2
;	genCmp #3
	xrl	a,#0x80
;	genCmp #3.1
	subb	a,#0xb0
;	genIfxJump 
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00109$
00135$:
;	_atoi.c 33
;	genLabel 
00102$:
;	_atoi.c 34
;	genCmpEq 
;	gencjneshort
	mov	a,r2
	cjne	a,#0x2D,00136$
; Peephole 132   changed ljmp to sjmp
	sjmp 00109$
00136$:
;	genCmpEq 
;	gencjneshort
	mov	a,r2
	cjne	a,#0x2B,00137$
; Peephole 132   changed ljmp to sjmp
	sjmp 00109$
00137$:
;	_atoi.c 36
;	genPlus 
	inc	r0
	cjne	r0,#0x00,00138$
	inc	r1
	cjne	r1,#0x00,00138$
	inc	r6
00138$:
;	did genPlusIncr
;	genGoto 
;	genLabel 
; Peephole 132   changed ljmp to sjmp
	sjmp 00107$
00109$:
;	_atoi.c 39
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#_atoi_s_1_1
	mov	a,r0
	movx	@dptr,a
	inc	dptr
	mov	a,r1
	movx	@dptr,a
	inc	dptr
	mov	a,r6
	movx	@dptr,a
	inc	dptr
	mov	a,r7
	movx	@dptr,a
;	genCmpEq 
;	gencjne
;	gencjneshort
	mov	a,r2
	cjne	a,#0x2D,00139$
	mov	a,#0x01
	sjmp	00140$
00139$:
	clr	a
00140$:
;	genAssign 
;	genAssign: resultIsFar = TRUE
;	_atoi.c 40
;	genIfx 
; Peephole 166   removed redundant mov
	mov  r3,a
	mov  ar4,r3 
;	genIfxJump 
; Peephole 109   removed ljmp by inverse jump logic
	jnz  00110$
00141$:
;	genCmpEq 
;	gencjneshort
	mov	a,r2
; Peephole 132   changed ljmp to sjmp
; Peephole 199   optimized misc jump sequence
	cjne a,#0x2B,00131$
;00142$:
; Peephole 200   removed redundant sjmp
00143$:
;	genLabel 
00110$:
;	genPlus 
	mov	dptr,#_atoi_s_1_1
;	Swapped plus args.
	movx	a,@dptr
	add	a,#0x01
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	movx	@dptr,a
;	_atoi.c 42
;	genLabel 
00131$:
;	genAssign 
	mov	dptr,#_atoi_s_1_1
;	genAssign: resultIsFar = TRUE
;	genFarFarAssign
	movx	a,@dptr
	mov	r2,a
	inc	dptr
	movx	a,@dptr
	mov	r3,a
	inc	dptr
	movx	a,@dptr
	mov	r5,a
	inc	dptr
	movx	a,@dptr
	mov	r6,a
;	genLabel 
00115$:
;	genPointerGet 
;	genGenPointerGet 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r5
	mov	b,r6
	lcall	__gptrget
;	genIfx 
; Peephole 105   removed redundant mov
	mov  r7,a
;	genIfxJump 
	jnz	00144$
	ljmp	00117$
00144$:
;	genCmpLt 
;	genCmp
	clr	c
;	genCmp #1: 0/1/0
	mov	a,r7
;	genCmp #2
;	genCmp #3
	xrl	a,#0x80
;	genCmp #3.1
	subb	a,#0xb0
;	genIfxJump 
	jnc	00145$
	ljmp	00117$
00145$:
;	genCmpGt 
;	genCmp
	clr	c
;	genCmp #1: 0/1/0
;	genCmp #2
;	genCmp #3
; Peephole 159   avoided xrl during execution
	mov  a,#(0x39 ^ 0x80)
;	genCmp #3.2
	mov	b,r7
	xrl	b,#0x80
	subb	a,b
;	genIfxJump 
	jnc	00146$
	ljmp	00117$
00146$:
;	_atoi.c 43
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#__mulsint_PARM_2
	mov	a,#0x0A
	movx	@dptr,a
	clr	a
	inc	dptr
	movx	@dptr,a
;	genCall 
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	mov	dptr,#_atoi_rv_1_1
	movx	a,@dptr
	mov	r2,a
	inc	dptr
	movx	a,@dptr
	mov	dph,a
	mov	dpl,r2
	lcall	__mulsint
	mov	r0,dpl
	mov	r1,dph
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
;	genMinus 
	mov	a,r7
	add	a,#0xd0
;	genCast 
; Peephole 100   removed redundant mov
	mov  r7,a
	mov  dptr,#_atoi_sloc0_1_0
	movx @dptr,a
	mov	a,r7
	rlc	a
	subb	a,acc
	inc	dptr
	movx	@dptr,a
;	genPlus 
	mov	dptr,#_atoi_sloc0_1_0
	mov	dps, #0x01
	mov	dptr, #_atoi_rv_1_1
	dec	dps
	movx	a,@dptr
	add	a,r0
	inc	dps
	movx	@dptr,a
	dec	dps
	inc	dptr
	movx	a,@dptr
	addc	a,r1
	inc	dps
	inc	dptr
	movx	@dptr,a
	mov	dps, #0x00
;	_atoi.c 44
;	genPlus 
	inc	r2
	cjne	r2,#0x00,00147$
	inc	r3
	cjne	r3,#0x00,00147$
	inc	r5
00147$:
;	did genPlusIncr
;	genGoto 
	ljmp	00115$
;	genLabel 
00117$:
;	_atoi.c 47
;	genIfx 
	mov	a,r4
;	genIfxJump 
; Peephole 110   removed ljmp by inverse jump logic
	jz  00120$
00148$:
;	genUminus 
	mov	dptr,#_atoi_rv_1_1
	movx	a,@dptr
	setb	c
	cpl	a
	addc	a,#0
	mov	r2,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	mov	r3,a
;	genGoto 
;	genLabel 
; Peephole 132   changed ljmp to sjmp
	sjmp 00121$
00120$:
;	genAssign 
	mov	dptr,#_atoi_rv_1_1
;	genAssign: resultIsFar = FALSE
	movx	a,@dptr
	mov	r2,a
	inc	dptr
	movx	a,@dptr
	mov	r3,a
;	genLabel 
00121$:
;	genRet 
	mov	dpl,r2
	mov	dph,r3
;	genLabel 
00118$:
;	genEndFunction 
	ret
	.area CSEG    (CODE)