_fsadd.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 10:57:34 2001

;--------------------------------------------------------
	.module _fsadd
	
.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 ___fsadd_PARM_2
	.globl ___fsadd
;--------------------------------------------------------
; 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)
___fsadd_PARM_2::
	.ds 4
___fsadd_mant1_1_1::
	.ds 4
___fsadd_mant2_1_1::
	.ds 4
___fsadd_fl1_1_1::
	.ds 4
___fsadd_fl2_1_1::
	.ds 4
___fsadd_exp1_1_1::
	.ds 2
___fsadd_exp2_1_1::
	.ds 2
___fsadd_sign_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)
;	_fsadd.c 17
;	genFunction 
;	-----------------------------------------
;	 function __fsadd
;	-----------------------------------------
___fsadd:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_fsadd.c 101
;	genReceive 
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
;	_fsadd.c 22
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#___fsadd_sign_1_1
	clr	a
	movx	@dptr,a
	inc	dptr
	movx	@dptr,a
	inc	dptr
	movx	@dptr,a
	inc	dptr
	movx	@dptr,a
;	_fsadd.c 24
;	genPointerSet 
	mov	dptr,#___fsadd_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
;	_fsadd.c 25
;	genPointerSet 
	mov	dptr,#___fsadd_fl2_1_1
	mov     dps, #0x01
	mov     dptr, #___fsadd_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
;	_fsadd.c 28
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_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
;	genIfx 
	mov	a,r2
	orl	a,r3
	orl	a,r4
	orl	a,r5
;	genIfxJump 
; Peephole 109   removed ljmp by inverse jump logic
	jnz  00102$
00146$:
;	_fsadd.c 29
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl2_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genRet 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	ljmp	00128$
;	genLabel 
00102$:
;	_fsadd.c 30
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl2_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genIfx 
	mov	a,r2
	orl	a,r3
	orl	a,r4
	orl	a,r5
;	genIfxJump 
; Peephole 109   removed ljmp by inverse jump logic
	jnz  00104$
00147$:
;	_fsadd.c 31
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genRet 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	ljmp	00128$
;	genLabel 
00104$:
;	_fsadd.c 33
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genRightShift 
;	genRightShiftLiteral (23), size 4
;	genRightShiftLiteral wimping out
	mov	b,#0x18
	sjmp	00149$
00148$:
	clr	c
	mov	a,r5
	rrc	a
	mov	r5,a
	mov	a,r4
	rrc	a
	mov	r4,a
	mov	a,r3
	rrc	a
	mov	r3,a
	mov	a,r2
	rrc	a
	mov	r2,a
00149$:
	djnz	b,00148$
;	genAnd 
	mov	r3,#0x00
	mov	r4,#0x00
	mov	r5,#0x00
;	genCast 
	mov	dptr,#___fsadd_exp1_1_1
	mov	a,r2
	movx	@dptr,a
	inc	dptr
	mov	a,r3
	movx	@dptr,a
;	_fsadd.c 34
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_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
;	genRightShift 
;	genRightShiftLiteral (23), size 4
;	genRightShiftLiteral wimping out
	mov	b,#0x18
	sjmp	00151$
00150$:
	clr	c
	mov	a,r5
	rrc	a
	mov	r5,a
	mov	a,r4
	rrc	a
	mov	r4,a
	mov	a,r3
	rrc	a
	mov	r3,a
	mov	a,r2
	rrc	a
	mov	r2,a
00151$:
	djnz	b,00150$
;	genAnd 
	mov	r3,#0x00
	mov	r4,#0x00
	mov	r5,#0x00
;	genCast 
	mov	dptr,#___fsadd_exp2_1_1
	mov	a,r2
	movx	@dptr,a
	inc	dptr
	mov	a,r3
	movx	@dptr,a
;	_fsadd.c 36
;	genPlus 
	mov	dptr,#___fsadd_exp2_1_1
;	Swapped plus args.
	movx	a,@dptr
	add	a,#0x19
	mov	r2,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	mov	r3,a
;	genCmpGt 
	mov	dptr,#___fsadd_exp1_1_1
;	genCmp
	clr	c
;	genCmp #1: 1/1/0
	mov	a,r2
;	genCmp #2
;	genCmp #4
;	genCmp #4.1
	xch	a, b
	movx	a,@dptr
	xch	a, b
	subb	a,b
;	genCmp #1: 0/1/1
	mov	a,r3
;	genCmp #2
;	genCmp #3
	xrl	a,#0x80
;	genCmp #3.2
	push	acc
	inc	dptr
	movx	a,@dptr
	mov	b,a
	xrl	b,#0x80
	pop	acc
	subb	a,b
;	genIfxJump 
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00106$
00152$:
;	_fsadd.c 37
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genCall 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	lcall	___slong2fs
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
;	genRet 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	ljmp	00128$
;	genLabel 
00106$:
;	_fsadd.c 38
;	genPlus 
	mov	dptr,#___fsadd_exp1_1_1
;	Swapped plus args.
	movx	a,@dptr
	add	a,#0x19
	mov	r2,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	mov	r3,a
;	genCmpGt 
	mov	dptr,#___fsadd_exp2_1_1
;	genCmp
	clr	c
;	genCmp #1: 1/1/0
	mov	a,r2
;	genCmp #2
;	genCmp #4
;	genCmp #4.1
	xch	a, b
	movx	a,@dptr
	xch	a, b
	subb	a,b
;	genCmp #1: 0/1/1
	mov	a,r3
;	genCmp #2
;	genCmp #3
	xrl	a,#0x80
;	genCmp #3.2
	push	acc
	inc	dptr
	movx	a,@dptr
	mov	b,a
	xrl	b,#0x80
	pop	acc
	subb	a,b
;	genIfxJump 
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00108$
00153$:
;	_fsadd.c 39
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl2_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genCall 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	lcall	___slong2fs
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
;	genRet 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	ljmp	00128$
;	genLabel 
00108$:
;	_fsadd.c 42
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_fl1_1_1
	movx	a,@dptr
	inc	dptr
	mov	r2,a
	movx	a,@dptr
	inc	dptr
	mov	r3,a
	movx	a,@dptr
	inc	dptr
	mov	r4,a
	movx	a,@dptr
	mov	r5,a
;	genAnd 
	anl	ar4,#0x7F
	mov	r5,#0x00
;	genOr 
	orl	ar4,#0x80
;	genLeftShift 
;	genLeftShiftLiteral (6), size 4
;	genLeftShiftLiteral wimping out
	mov	b,#0x07
	sjmp	00155$
00154$:
	mov	a,r2
	add	a,acc
	mov	r2,a
	mov	a,r3
	rlc	a
	mov	r3,a
	mov	a,r4
	rlc	a
	mov	r4,a
	mov	a,r5
	rlc	a
	mov	r5,a
00155$:
	djnz	b,00154$
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#___fsadd_mant1_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
;	_fsadd.c 43
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_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
;	genAnd 
	anl	ar4,#0x7F
	mov	r5,#0x00
;	genOr 
	orl	ar4,#0x80
;	genLeftShift 
;	genLeftShiftLiteral (6), size 4
;	genLeftShiftLiteral wimping out
	mov	b,#0x07
	sjmp	00157$
00156$:
	mov	a,r2
	add	a,acc
	mov	r2,a
	mov	a,r3
	rlc	a
	mov	r3,a
	mov	a,r4
	rlc	a
	mov	r4,a
	mov	a,r5
	rlc	a
	mov	r5,a
00157$:
	djnz	b,00156$
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#___fsadd_mant2_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
;	_fsadd.c 45
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_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 
; Peephole 110   removed ljmp by inverse jump logic
	jz  00110$
00158$:
;	_fsadd.c 46
;	genUminus 
	mov	dptr,#___fsadd_mant1_1_1
	movx	a,@dptr
	setb	c
	cpl	a
	addc	a,#0
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	movx	@dptr,a
;	genLabel 
00110$:
;	_fsadd.c 47
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___fsadd_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 
; Peephole 110   removed ljmp by inverse jump logic
	jz  00112$
00159$:
;	_fsadd.c 48
;	genUminus 
	mov	dptr,#___fsadd_mant2_1_1
	movx	a,@dptr
	setb	c
	cpl	a
	addc	a,#0
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	cpl	a
	addc	a,#0
	movx	@dptr,a
;	genLabel 
00112$:
;	_fsadd.c 50
;	genCmpGt 
	mov	dptr,#___fsadd_exp2_1_1
	mov	dps, #0x01
	mov	dptr, #___fsadd_exp1_1_1
	dec	dps
;	genCmp
	clr	c
;	genCmp #1: 1/1/0
	movx	a,@dptr
;	genCmp #2
;	genCmp #4
;	genCmp #4.1
	xch	a, b
	mov	dps, #0x01
	movx	a,@dptr
	mov	dps, #0x00
	xch	a, b
	subb	a,b
;	genCmp #1: 0/1/1
	inc	dptr
	movx	a,@dptr
;	genCmp #2
;	genCmp #3
	xrl	a,#0x80
;	genCmp #3.2
	push	acc
	mov	dps, #0x01
	xch	a, ap
	inc	dptr
	movx	a,@dptr
	mov	dps, #0x00
	xch	a, ap
	mov	b,ap
	xrl	b,#0x80
	pop	acc
	subb	a,b
;	genIfxJump 
	jc	00160$
	ljmp	00114$
00160$:
;	_fsadd.c 52
;	genMinus 
	mov	dptr,#___fsadd_exp1_1_1
	mov	dps, #0x01
	mov	dptr, #___fsadd_exp2_1_1
	dec	dps
	clr	c
	movx	a,@dptr
	xch	a, ap
	inc	dps
	movx	a,@dptr
	xch	a, ap
	subb	a,ap
	push	acc
	dec	dps
	inc	dptr
	movx	a,@dptr
	xch	a, ap
	inc	dps
	inc	dptr
	movx	a,@dptr
	xch	a, ap
	subb	a,ap
	push	acc
	mov	dps, #0x00
	pop	acc
	mov	r3,a
	pop	acc
	mov	r2,a
;	genRightShift 
;	genSignedRightShift 
	mov	b,r2
	inc	b
	mov	dptr,#___fsadd_mant2_1_1
	movx	a,@dptr
	mov	r2,acc
	inc	dptr
	movx	a,@dptr
	mov	r3,acc
	inc	dptr
	movx	a,@dptr
	mov	r4,acc
	inc	dptr
	movx	a,@dptr
	mov	r5,acc
	movx	a,@dptr
; Peephole 206   removed redundant mov a,a
	rlc	a
	mov	ov,c
	sjmp	00162$
00161$:
	mov	c,ov
	mov	a,r5
	rrc	a
	mov	r5,a
	mov	a,r4
	rrc	a
	mov	r4,a
	mov	a,r3
	rrc	a
	mov	r3,a
	mov	a,r2
	rrc	a
	mov	r2,a
00162$:
	djnz	b,00161$