_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 10:57:11 2001

;--------------------------------------------------------
	.module _atoi
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _atoi
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
_atoi_s_1_1::
	.ds 3
_atoi_sloc0_1_0::
	.ds 2
;--------------------------------------------------------
; 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 'atoi'
;------------------------------------------------------------
;s                         Allocated to in memory with name '_atoi_s_1_1'
;rv                        Allocated to registers r5 r6 
;sign                      Allocated to registers r4 
;sloc0                     Allocated to in memory with name '_atoi_sloc0_1_0'
;	_atoi.c 25
;	-----------------------------------------
;	 function atoi
;	-----------------------------------------
_atoi:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_atoi.c 47
	mov	_atoi_s_1_1,dpl
	mov	(_atoi_s_1_1 + 1),dph
	mov	(_atoi_s_1_1 + 2),b
;	_atoi.c 27
	mov	r5,#0x00
	mov	r6,#0x00
;	_atoi.c 31
	mov	r7,_atoi_s_1_1
	mov	r0,(_atoi_s_1_1 + 1)
	mov	r1,(_atoi_s_1_1 + 2)
00107$:
	mov	dpl,r7
	mov	dph,r0
	mov	b,r1
	lcall	__gptrget
	mov	r2,a
	inc	dptr
	mov	r7,dpl
	mov	r0,dph
	mov	a,r2
; Peephole 110   removed ljmp by inverse jump logic
	jz  00109$
00133$:
;	_atoi.c 32
	clr	c
; Peephole 159   avoided xrl during execution
	mov  a,#(0x39 ^ 0x80)
	mov	b,r2
	xrl	b,#0x80
	subb	a,b
; Peephole 132   changed ljmp to sjmp
; Peephole 160   removed sjmp by inverse jump logic
	jc   00102$
00134$:
	clr	c
	mov	a,r2
	xrl	a,#0x80
	subb	a,#0xb0
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00109$
00135$:
;	_atoi.c 33
00102$:
;	_atoi.c 34
	cjne	r2,#0x2D,00136$
; Peephole 132   changed ljmp to sjmp
	sjmp 00109$
00136$:
; Peephole 132   changed ljmp to sjmp
;	_atoi.c 36
; Peephole 132   changed ljmp to sjmp
; Peephole 199   optimized misc jump sequence
	cjne r2,#0x2B,00107$
;00137$:
; Peephole 200   removed redundant sjmp
00109$:
;	_atoi.c 39
	mov	_atoi_s_1_1,r7
	mov	(_atoi_s_1_1 + 1),r0
	mov	(_atoi_s_1_1 + 2),r1
	cjne	r2,#0x2D,00138$
	mov	a,#0x01
	sjmp	00139$
00138$:
	clr	a
00139$:
;	_atoi.c 40
; Peephole 166   removed redundant mov
	mov  r3,a
	mov  ar4,r3 
; Peephole 109   removed ljmp by inverse jump logic
	jnz  00110$
00140$:
; Peephole 132   changed ljmp to sjmp
; Peephole 199   optimized misc jump sequence
	cjne r2,#0x2B,00131$
;00141$:
; Peephole 200   removed redundant sjmp
00142$:
00110$:
	inc	_atoi_s_1_1
	clr	a
	cjne	a,_atoi_s_1_1,00143$
	inc	(_atoi_s_1_1 + 1)
00143$:
;	_atoi.c 42
00131$:
	mov	r2,_atoi_s_1_1
	mov	r3,(_atoi_s_1_1 + 1)
	mov	r7,(_atoi_s_1_1 + 2)
00115$:
	mov	dpl,r2
	mov	dph,r3
	mov	b,r7
	lcall	__gptrget
	mov	r0,a
	inc	dptr
	mov	r2,dpl
	mov	r3,dph
	mov	a,r0
	jnz	00144$
	ljmp	00117$
00144$:
	clr	c
	mov	a,r0
	xrl	a,#0x80
	subb	a,#0xb0
	jnc	00145$
	ljmp	00117$
00145$:
	clr	c
; Peephole 159   avoided xrl during execution
	mov  a,#(0x39 ^ 0x80)
	mov	b,r0
	xrl	b,#0x80
	subb	a,b
; Peephole 132   changed ljmp to sjmp
; Peephole 160   removed sjmp by inverse jump logic
	jc   00117$
00146$:
;	_atoi.c 43
	clr	a
	mov	(__mulsint_PARM_2 + 1),a
	mov	__mulsint_PARM_2,#0x0A
	mov	dpl,r5
	mov	dph,r6
	push	ar2
	push	ar3
	push	ar4
	push	ar5
	push	ar6
	push	ar7
	push	ar0
	lcall	__mulsint
	mov	_atoi_sloc0_1_0,dpl
	mov	(_atoi_sloc0_1_0 + 1),dph
	pop	ar0
	pop	ar7
	pop	ar6
	pop	ar5
	pop	ar4
	pop	ar3
	pop	ar2
	mov	a,r0
	add	a,#0xd0
	mov	r0,a
; Peephole 180   changed mov to clr
	clr  a
	addc	a,#0xff
	mov	r1,a
	mov	a,r0
	add	a,_atoi_sloc0_1_0
	mov	r5,a
	mov	a,r1
	addc	a,(_atoi_sloc0_1_0 + 1)
	mov	r6,a
;	_atoi.c 44
	ljmp	00115$
00117$:
;	_atoi.c 47
	mov	a,r4
; Peephole 110   removed ljmp by inverse jump logic
	jz  00120$
00147$:
	clr	c
	clr	a
	subb	a,r5
	mov	r2,a
	clr	a
	subb	a,r6
	mov	r3,a
; Peephole 132   changed ljmp to sjmp
	sjmp 00121$
00120$:
	mov	ar2,r5
	mov	ar3,r6
00121$:
	mov	dpl,r2
	mov	dph,r3
00118$:
	ret
	.area CSEG    (CODE)