_strchr.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 10:57:16 2001

;--------------------------------------------------------
	.module _strchr
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _strchr_PARM_2
	.globl _strchr
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
;--------------------------------------------------------
; overlayable items in internal ram 
;--------------------------------------------------------
	.area _DUMMY
	.area	OSEG    (OVR,DATA)
_strchr_PARM_2::
	.ds 1
;--------------------------------------------------------
; 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 'strchr'
;------------------------------------------------------------
;	_strchr.c 27
;	-----------------------------------------
;	 function strchr
;	-----------------------------------------
_strchr:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_strchr.c 0
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
;	_strchr.c 32
00102$:
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	lcall	__gptrget
	mov	r5,a
	inc	dptr
	mov	r2,dpl
	mov	r3,dph
	mov	a,r5
; Peephole 110   removed ljmp by inverse jump logic
	jz  00104$
00113$:
	mov	a,r5
; Peephole 132   changed ljmp to sjmp
;	_strchr.c 33
; Peephole 132   changed ljmp to sjmp
; Peephole 199   optimized misc jump sequence
	cjne a,_strchr_PARM_2,00102$
;00114$:
; Peephole 200   removed redundant sjmp
00104$:
;	_strchr.c 35
	mov	a,r5
; Peephole 132   changed ljmp to sjmp
; Peephole 199   optimized misc jump sequence
	cjne a,_strchr_PARM_2,00106$
;00115$:
; Peephole 200   removed redundant sjmp
00116$:
;	_strchr.c 36
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
; Peephole 132   changed ljmp to sjmp
	sjmp 00107$
00106$:
;	_strchr.c 37
; Peephole 181   used 16 bit load of dptr
	mov  dptr,#0x0000
	mov	b,#0x00
00107$:
	ret
	.area CSEG    (CODE)