_ulong2fs.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 10:57:40 2001

;--------------------------------------------------------
	.module _ulong2fs
	
.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 ___ulong2fs
;--------------------------------------------------------
; 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)
___ulong2fs_exp_1_1::
	.ds 2
___ulong2fs_fl_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)
;	_ulong2fs.c 35
;	genFunction 
;	-----------------------------------------
;	 function __ulong2fs
;	-----------------------------------------
___ulong2fs:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_ulong2fs.c 55
;	genReceive 
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
;	_ulong2fs.c 40
;	genIfx 
	mov	a,r2
	orl	a,r3
	orl	a,r4
	orl	a,r5
;	genIfxJump 
; Peephole 109   removed ljmp by inverse jump logic
	jnz  00110$
00111$:
;	_ulong2fs.c 42
;	genRet 
; Peephole 181a   used 24 bit load of dptr
	mov  dptr,#0x0000
	mov	b,#0x00
	ljmp	00106$
;	_ulong2fs.c 45
;	genLabel 
00110$:
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#___ulong2fs_exp_1_1
	mov	a,#0x96
	movx	@dptr,a
	clr	a
	inc	dptr
	movx	@dptr,a
;	genLabel 
00103$:
;	genCmpLt 
;	genCmp
	clr	c
;	genCmp #1: 3/0/0
	mov	a,r2
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,#0x00
;	genCmp #1: 2/0/1
	mov	a,r3
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,#0x00
;	genCmp #1: 1/0/2
	mov	a,r4
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,#0x80
;	genCmp #1: 0/0/3
	mov	a,r5
;	genCmp #2
;	genCmp #4
;	genCmp #4.2
	subb	a,#0x00
;	genIfxJump 
; Peephole 108   removed ljmp by inverse jump logic
	jnc  00105$
00112$:
;	_ulong2fs.c 47
;	genLeftShift 
;	genLeftShiftLiteral (1), size 4
;	genLeftShiftLiteral wimping out
	mov	b,#0x02
	mov	r0,ar2
	mov	r1,ar3
	mov	r6,ar4
	mov	r7,ar5
	sjmp	00114$
00113$:
	mov	a,r0
	add	a,acc
	mov	r0,a
	mov	a,r1
	rlc	a
	mov	r1,a
	mov	a,r6
	rlc	a
	mov	r6,a
	mov	a,r7
	rlc	a
	mov	r7,a
00114$:
	djnz	b,00113$
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	ar2,r0
	mov	ar3,r1
	mov	ar4,r6
	mov	ar5,r7
;	_ulong2fs.c 48
;	genMinus 
	mov	dptr,#___ulong2fs_exp_1_1
	movx	a,@dptr
	add	a,#0xff
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0xff
	movx	@dptr,a
;	genGoto 
;	genLabel 
; Peephole 132   changed ljmp to sjmp
	sjmp 00103$
00105$:
;	_ulong2fs.c 51
;	genAnd 
	anl	ar4,#0x7F
;	_ulong2fs.c 53
;	genCast 
	mov	dptr,#___ulong2fs_exp_1_1
	movx	a,@dptr
	mov	r6,a
	inc	dptr
	movx	a,@dptr
	mov	r7,a
	movx	a,@dptr
	rlc	a
	subb	a,acc
	mov	r0,a
	mov	r1,a
;	genLeftShift 
;	genLeftShiftLiteral (23), size 4
;	genLeftShiftLiteral wimping out
	mov	b,#0x18
	sjmp	00116$
00115$:
	mov	a,r6
	add	a,acc
	mov	r6,a
	mov	a,r7
	rlc	a
	mov	r7,a
	mov	a,r0
	rlc	a
	mov	r0,a
	mov	a,r1
	rlc	a
	mov	r1,a
00116$:
	djnz	b,00115$
;	genOr 
;	genOr 
	mov	a,r6
	orl	ar2,a
	mov	a,r7
	orl	ar3,a
	mov	a,r0
	orl	ar4,a
	mov	a,r1
	orl	ar5,a
;	genPointerSet 
	mov	dptr,#___ulong2fs_fl_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
;	_ulong2fs.c 55
;	genPointerGet 
;	genFarPointerGet
	mov	dptr,#___ulong2fs_fl_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
;	genLabel 
00106$:
;	genEndFunction 
	ret
	.area CSEG    (CODE)