_mulslong.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 196 行

;--------------------------------------------------------
; File Created by SDCC : FreeWare ANSI-C Compiler
; Version 2.3.0 Thu Sep 20 10:57:16 2001

;--------------------------------------------------------
	.module _mulslong
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl __mulslong_PARM_2
	.globl __mulslong
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
__mulslong_PARM_2::
	.ds 4
__mulslong_sloc0_1_0::
	.ds 4
;--------------------------------------------------------
; 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)
;--------------------------------------------------------
; 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 '_mulslong'
;------------------------------------------------------------
;b                         Allocated to in memory with name '__mulslong_PARM_2'
;a                         Allocated to registers r2 r3 r4 r5 
;r                         Allocated to registers r2 r3 r4 r5 
;sloc0                     Allocated to in memory with name '__mulslong_sloc0_1_0'
;	_mulslong.c 31
;	-----------------------------------------
;	 function _mulslong
;	-----------------------------------------
__mulslong:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_mulslong.c 0
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
;	_mulslong.c 35
; Peephole 105   removed redundant mov
	mov  r5,a
	rlc	a
	clr	a
	rlc	a
; Peephole 105   removed redundant mov
	mov  r6,a
; Peephole 110   removed ljmp by inverse jump logic
	jz  00106$
00113$:
	clr	c
	clr	a
	subb	a,r2
	mov	__mulslong_sloc0_1_0,a
	clr	a
	subb	a,r3
	mov	(__mulslong_sloc0_1_0 + 1),a
	clr	a
	subb	a,r4
	mov	(__mulslong_sloc0_1_0 + 2),a
	clr	a
	subb	a,r5
	mov	(__mulslong_sloc0_1_0 + 3),a
; Peephole 132   changed ljmp to sjmp
	sjmp 00107$
00106$:
	mov	__mulslong_sloc0_1_0,r2
	mov	(__mulslong_sloc0_1_0 + 1),r3
	mov	(__mulslong_sloc0_1_0 + 2),r4
	mov	(__mulslong_sloc0_1_0 + 3),r5
00107$:
	mov	r2,__mulslong_sloc0_1_0
	mov	r3,(__mulslong_sloc0_1_0 + 1)
	mov	r4,(__mulslong_sloc0_1_0 + 2)
	mov	r5,(__mulslong_sloc0_1_0 + 3)
;	_mulslong.c 36
	mov	a,(__mulslong_PARM_2 + 3)
	rlc	a
	clr	a
	rlc	a
; Peephole 105   removed redundant mov
	mov  r7,a
; Peephole 110   removed ljmp by inverse jump logic
	jz  00108$
00114$:
	clr	c
	clr	a
	subb	a,__mulslong_PARM_2
	mov	__mulslong_sloc0_1_0,a
	clr	a
	subb	a,(__mulslong_PARM_2 + 1)
	mov	(__mulslong_sloc0_1_0 + 1),a
	clr	a
	subb	a,(__mulslong_PARM_2 + 2)
	mov	(__mulslong_sloc0_1_0 + 2),a
	clr	a
	subb	a,(__mulslong_PARM_2 + 3)
	mov	(__mulslong_sloc0_1_0 + 3),a
; Peephole 132   changed ljmp to sjmp
	sjmp 00109$
00108$:
	mov	__mulslong_sloc0_1_0,__mulslong_PARM_2
	mov	(__mulslong_sloc0_1_0 + 1),(__mulslong_PARM_2 + 1)
	mov	(__mulslong_sloc0_1_0 + 2),(__mulslong_PARM_2 + 2)
	mov	(__mulslong_sloc0_1_0 + 3),(__mulslong_PARM_2 + 3)
00109$:
	mov	__mululong_PARM_2,__mulslong_sloc0_1_0
	mov	(__mululong_PARM_2 + 1),(__mulslong_sloc0_1_0 + 1)
	mov	(__mululong_PARM_2 + 2),(__mulslong_sloc0_1_0 + 2)
	mov	(__mululong_PARM_2 + 3),(__mulslong_sloc0_1_0 + 3)
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
	push	ar6
	push	ar7
	lcall	__mululong
	mov	r2,dpl
	mov	r3,dph
	mov	r4,b
	mov	r5,a
	pop	ar7
	pop	ar6
;	_mulslong.c 38
	mov	a,r7
	xrl	a,ar6
; Peephole 110   removed ljmp by inverse jump logic
	jz  00102$
00115$:
;	_mulslong.c 39
	clr	c
	clr	a
	subb	a,r2
	mov	dpl,a
	clr	a
	subb	a,r3
	mov	dph,a
	clr	a
	subb	a,r4
	mov	b,a
	clr	a
	subb	a,r5
; Peephole 132   changed ljmp to sjmp
	sjmp 00104$
00102$:
;	_mulslong.c 41
	mov	dpl,r2
	mov	dph,r3
	mov	b,r4
	mov	a,r5
00104$:
	ret
	.area CSEG    (CODE)