fabsf.asm

sdcc的win版本.是small device c compiler的意思.支持8051和z80.是一个遵循GPL的软件,不过他的库函数是LGPL的,允许商业联结,可以用在自己的软件里

;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.3.1-pj3 Sun Jan 20 13:10:05 2002

;--------------------------------------------------------
	.module fabsf
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _fabsf
;--------------------------------------------------------
; 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)
;--------------------------------------------------------
; external initialized ram data
;--------------------------------------------------------
	.area XISEG   (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 'fabsf'
;------------------------------------------------------------
;x                         Allocated to registers r2 r3 r4 r5 
;fl                        Allocated to stack - offset 1
;	fabsf.c 24
;	-----------------------------------------
;	 function fabsf
;	-----------------------------------------
_fabsf:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
	push	_bp
	mov	_bp,sp
	inc	sp
	inc	sp
	inc	sp
	inc	sp
;	fabsf.c 30
;	genReceive
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
;	fabsf.c 28
;	genAddrOf
; Peephole 212  reduced add sequence to inc
	mov  r0,_bp
	inc  r0
;	genPointerSet
;	genNearPointerSet
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
	dec	r0
	dec	r0
	dec	r0
;	fabsf.c 29
;	genAnd
	anl	ar5,#0x7F
;	genPointerSet
;	genNearPointerSet
	mov	@r0,ar2
	inc	r0
	mov	@r0,ar3
	inc	r0
	mov	@r0,ar4
	inc	r0
	mov	@r0,ar5
;	fabsf.c 30
;	genRet
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
00101$:
	mov	sp,_bp
	pop	_bp
	ret
	.area CSEG    (CODE)
	.area	XINIT   (CODE)