_fslt.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 10:57:13 2001

;--------------------------------------------------------
	.module _fslt
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl ___fslt_PARM_2
	.globl ___fslt
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
;--------------------------------------------------------
; overlayable items in internal ram 
;--------------------------------------------------------
	.area _DUMMY
	.area	OSEG    (OVR,DATA)
___fslt_PARM_2::
	.ds 4
___fslt_fl1_1_1::
	.ds 4
___fslt_fl2_1_1::
	.ds 4
;--------------------------------------------------------
; 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 '__fslt'
;------------------------------------------------------------
;	_fslt.c 73
;	-----------------------------------------
;	 function __fslt
;	-----------------------------------------
___fslt:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_fslt.c 87
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
;	_fslt.c 77
	mov	___fslt_fl1_1_1,r2
	mov	(___fslt_fl1_1_1 + 1),r3
	mov	(___fslt_fl1_1_1 + 2),r4
	mov	(___fslt_fl1_1_1 + 3),r5
;	_fslt.c 78
	mov	___fslt_fl2_1_1,___fslt_PARM_2
	mov	(___fslt_fl2_1_1 + 1),(___fslt_PARM_2 + 1)
	mov	(___fslt_fl2_1_1 + 2),(___fslt_PARM_2 + 2)
	mov	(___fslt_fl2_1_1 + 3),(___fslt_PARM_2 + 3)
;	_fslt.c 80
	mov	a,(___fslt_fl1_1_1 + 3)
	rl	a
	anl	a,#0x01
; Peephole 105   removed redundant mov
	mov  r2,a
; Peephole 110   removed ljmp by inverse jump logic
	jz  00102$
00111$:
	mov	a,(___fslt_fl2_1_1 + 3)
	rl	a
	anl	a,#0x01
; Peephole 105   removed redundant mov
	mov  r2,a
; Peephole 110   removed ljmp by inverse jump logic
	jz  00102$
00112$:
;	_fslt.c 82
	mov	r2,___fslt_fl1_1_1
	mov	r3,(___fslt_fl1_1_1 + 1)
	mov	r4,(___fslt_fl1_1_1 + 2)
	mov	r5,(___fslt_fl1_1_1 + 3)
	xrl	ar5,#0x80
	mov	___fslt_fl1_1_1,r2
	mov	(___fslt_fl1_1_1 + 1),r3
	mov	(___fslt_fl1_1_1 + 2),r4
	mov	(___fslt_fl1_1_1 + 3),r5
;	_fslt.c 83
	mov	r2,___fslt_fl2_1_1
	mov	r3,(___fslt_fl2_1_1 + 1)
	mov	r4,(___fslt_fl2_1_1 + 2)
	mov	r5,(___fslt_fl2_1_1 + 3)
	xrl	ar5,#0x80
	mov	___fslt_fl2_1_1,r2
	mov	(___fslt_fl2_1_1 + 1),r3
	mov	(___fslt_fl2_1_1 + 2),r4
	mov	(___fslt_fl2_1_1 + 3),r5
00102$:
;	_fslt.c 85
	clr	c
	mov	a,___fslt_fl1_1_1
	subb	a,___fslt_fl2_1_1
	mov	a,(___fslt_fl1_1_1 + 1)
	subb	a,(___fslt_fl2_1_1 + 1)
	mov	a,(___fslt_fl1_1_1 + 2)
	subb	a,(___fslt_fl2_1_1 + 2)
	mov	a,(___fslt_fl1_1_1 + 3)
	xrl	a,#0x80
	mov	b,(___fslt_fl2_1_1 + 3)
	xrl	b,#0x80
	subb	a,b
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00105$
00113$:
;	_fslt.c 86
	mov	dpl,#0x01
; Peephole 132   changed ljmp to sjmp
	sjmp 00106$
00105$:
;	_fslt.c 87
	mov	dpl,#0x00
00106$:
	ret
	.area CSEG    (CODE)