_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 10:57:35 2001

;--------------------------------------------------------
	.module _fslt
	
.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 ___fslt_PARM_2
	.globl ___fslt
;--------------------------------------------------------
; 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)
___fslt_PARM_2::
	.ds 4
___fslt_fl1_1_1::
	.ds 4
___fslt_fl2_1_1::
	.ds 4
;--------------------------------------------------------
; global & static initialisations
;--------------------------------------------------------
	.area GSINIT  (CODE)
	.area GSFINAL (CODE)
	.area GSINIT  (CODE)
;--------------------------------------------------------
; Home
;--------------------------------------------------------
	.area HOME	 (CODE)
	.area CSEG    (CODE)
;--------------------------------------------------------
; code
;--------------------------------------------------------
	.area CSEG    (CODE)
;	_fslt.c 73
;	genFunction 
;	-----------------------------------------
;	 function __fslt
;	-----------------------------------------
___fslt:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_fslt.c 87
;	genReceive 
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
;	_fslt.c 77
;	genPointerSet 
	mov	dptr,#___fslt_fl1_1_1
	mov	a,r2
	movx	@dptr,a
	inc	dptr
	mov	a,r3
	movx	@dptr,a
	inc	dptr
	mov	a,r4
	movx	@dptr,a
	inc	dptr
	mov	a,r5
	movx	@dptr,a
;	_fslt.c 78
;	genPointerSet 
	mov	dptr,#___fslt_fl2_1_1
	mov     dps, #0x01
	mov     dptr, #___fslt_PARM_2
	movx	a,@dptr
	dec	dps
	movx	@dptr,a
	inc	dptr
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	movx	@dptr,a
	inc	dptr
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	movx	@dptr,a
	inc	dptr
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	movx	@dptr,a
;	_fslt.c 80
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fslt_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
;	genGetHbit 
; Peephole 105   removed redundant mov
	mov  r5,a
	rl	a
	anl	a,#0x01
;	genIfx 
; Peephole 105   removed redundant mov
	mov  r2,a
;	genIfxJump 
	jnz	00111$
	ljmp	00102$
00111$:
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fslt_fl2_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
;	genGetHbit 
; Peephole 105   removed redundant mov
	mov  r5,a
	rl	a
	anl	a,#0x01
;	genIfx 
; Peephole 105   removed redundant mov
	mov  r2,a
;	genIfxJump 
	jnz	00112$
	ljmp	00102$
00112$:
;	_fslt.c 82
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fslt_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genXor 
	xrl	ar5,#0x80
;	genPointerSet 
	mov	dptr,#___fslt_fl1_1_1
	mov	a,r2
	movx	@dptr,a
	inc	dptr
	mov	a,r3
	movx	@dptr,a
	inc	dptr
	mov	a,r4
	movx	@dptr,a
	inc	dptr
	mov	a,r5
	movx	@dptr,a
;	_fslt.c 83
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fslt_fl2_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genXor 
	xrl	ar5,#0x80
;	genPointerSet 
	mov	dptr,#___fslt_fl2_1_1
	mov	a,r2
	movx	@dptr,a
	inc	dptr
	mov	a,r3
	movx	@dptr,a
	inc	dptr
	mov	a,r4
	movx	@dptr,a
	inc	dptr
	mov	a,r5
	movx	@dptr,a
;	genLabel 
00102$:
;	_fslt.c 85
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fslt_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fslt_fl2_1_1
	movx	a,@dptr
	inc	dptr
	mov	r6,a
	movx	a,@dptr
	inc	dptr
	mov	r7,a
	movx	a,@dptr
	inc	dptr
	mov	r0,a
	movx	a,@dptr
	mov	r1,a
;	genCmpLt 
;	genCmp
	clr	c
;	genCmp #1: 3/1/0
	mov	a,r2
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,r6
;	genCmp #1: 2/1/1
	mov	a,r3
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,r7
;	genCmp #1: 1/1/2
	mov	a,r4
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,r0
;	genCmp #1: 0/1/3
	mov	a,r5
;	genCmp #2
;	genCmp #3
	xrl	a,#0x80
;	genCmp #3.2
	mov	b,r1
	xrl	b,#0x80
	subb	a,b
;	genIfxJump 
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00105$
00113$:
;	_fslt.c 86
;	genRet 
	mov	dpl,#0x01
;	genLabel 
; Peephole 132   changed ljmp to sjmp
	sjmp 00106$
00105$:
;	_fslt.c 87
;	genRet 
	mov	dpl,#0x00
;	genLabel 
00106$:
;	genEndFunction 
	ret
	.area CSEG    (CODE)