_memcpy.asm

来自「很少见的源码公开的msc51和z80的c编译器。」· 汇编 代码 · 共 247 行

;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.3.0 Thu Sep 20 10:57:37 2001

;--------------------------------------------------------
	.module _memcpy
	
.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 _memcpy_PARM_3
	.globl _memcpy_PARM_2
	.globl _memcpy
;--------------------------------------------------------
; 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)
_memcpy_PARM_2::
	.ds 4
_memcpy_PARM_3::
	.ds 2
_memcpy_ret_1_1::
	.ds 4
_memcpy_s_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)
;	_memcpy.c 31
;	genFunction 
;	-----------------------------------------
;	 function memcpy
;	-----------------------------------------
_memcpy:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_memcpy.c 75
;	genReceive 
	mov	r2,dpl
	mov	r3,dph
	mov	r4,dpx
	mov	r5,b
;	_memcpy.c 64
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#_memcpy_ret_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
;	_memcpy.c 66
;	genAssign 
	mov	dptr,#_memcpy_PARM_2
;	genAssign: resultIsFar = FALSE
	movx	a,@dptr
	mov	r6,a
	inc	dptr
	movx	a,@dptr
	mov	r7,a
	inc	dptr
	movx	a,@dptr
	mov	r0,a
	inc	dptr
	movx	a,@dptr
	mov	r1,a
;	genAssign 
;	genAssign: resultIsFar = TRUE
;	_memcpy.c 71
;	genAssign 
;	genAssign: resultIsFar = TRUE
	mov	dptr,#_memcpy_s_1_1
	mov	a,r6
	movx	@dptr,a
	inc	dptr
	mov	a,r7
	movx	@dptr,a
	inc	dptr
	mov	a,r0
	movx	@dptr,a
	inc	dptr
	mov	a,r1
	movx	@dptr,a
;	genAssign 
;	genAssign: resultIsFar = TRUE
;	genAssign 
	mov	dptr,#_memcpy_PARM_3
;	genAssign: resultIsFar = FALSE
	movx	a,@dptr
	mov	r6,a
	inc	dptr
	movx	a,@dptr
	mov	r7,a
;	genLabel 
00101$:
;	genAssign 
;	genAssign: resultIsFar = FALSE
	mov	ar0,r6
	mov	ar1,r7
;	genMinus 
	dec	r6
	cjne	r6,#0xff,00108$
	dec	r7
00108$:
;	genIfx 
	mov	a,r0
	orl	a,r1
;	genIfxJump 
	jnz	00109$
	ljmp	00103$
00109$:
;	_memcpy.c 72
;	genPointerGet 
;	genGenPointerGet 
	mov     dps, #0x01
	mov     dptr, #_memcpy_s_1_1
	movx	a,@dptr
	dec	dps
	mov	dpl,a
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	mov	dph,a
	inc	dps
	inc	dptr
	movx	a,@dptr
	dec	dps
	mov	dpx,a
	inc	dps
	inc	dptr
	movx	a,@dptr
	mov	b,a
	mov	dps, #0x00
	lcall	__gptrget
	mov	r0,a
;	genPlus 
	mov	dptr,#_memcpy_s_1_1
;	Swapped plus args.
	movx	a,@dptr
	add	a,#0x01
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	addc	a,#0x00
	movx	@dptr,a
	inc	dptr
	movx	a,@dptr
	movx	@dptr,a
;	genPointerSet 
	mov	dpl,r2
	mov	dph,r3
	mov	dpx,r4
	mov	b,r5
	mov	a,r0
	lcall	__gptrput
;	genPlus 
	inc	r2
	cjne	r2,#0x00,00110$
	inc	r3
	cjne	r3,#0x00,00110$
	inc	r4
00110$:
;	did genPlusIncr
;	genGoto 
	ljmp	00101$
;	genLabel 
00103$:
;	_memcpy.c 75
;	genRet 
	mov     dps, #0x01
	mov     dptr, #_memcpy_ret_1_1
	movx	a,@dptr
	mov	dpl,a
	inc	dptr
	movx	a,@dptr
	mov	dph,a
	inc	dptr
	movx	a,@dptr
	mov	dpx,a
	inc	dptr
	movx	a,@dptr
	mov	b,a
	mov	dps, #0x00
;	genLabel 
00104$:
;	genEndFunction 
	ret
	.area CSEG    (CODE)