_mulsint.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 10:57:15 2001

;--------------------------------------------------------
	.module _mulsint
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl __mulsint_PARM_2
	.globl __mulsint
;--------------------------------------------------------
; special function registers
;--------------------------------------------------------
;--------------------------------------------------------
; special function bits 
;--------------------------------------------------------
;--------------------------------------------------------
; internal ram data
;--------------------------------------------------------
	.area DSEG    (DATA)
__mulsint_PARM_2::
	.ds 2
;--------------------------------------------------------
; 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 '_mulsint'
;------------------------------------------------------------
;b                         Allocated to in memory with name '__mulsint_PARM_2'
;a                         Allocated to registers r2 r3 
;r                         Allocated to registers r2 r3 
;	_mulsint.c 26
;	-----------------------------------------
;	 function _mulsint
;	-----------------------------------------
__mulsint:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_mulsint.c 0
	mov	r2,dpl
	mov	r3,dph
;	_mulsint.c 30
	mov	a,r3
	rlc	a
	clr	a
	rlc	a
; Peephole 105   removed redundant mov
	mov  r4,a
; Peephole 110   removed ljmp by inverse jump logic
	jz  00106$
00113$:
	clr	c
	clr	a
	subb	a,r2
	mov	r5,a
	clr	a
	subb	a,r3
	mov	r6,a
; Peephole 132   changed ljmp to sjmp
	sjmp 00107$
00106$:
	mov	ar5,r2
	mov	ar6,r3
00107$:
	mov	ar2,r5
	mov	ar3,r6
;	_mulsint.c 31
	mov	a,(__mulsint_PARM_2 + 1)
	rlc	a
	clr	a
	rlc	a
; Peephole 105   removed redundant mov
	mov  r5,a
; Peephole 110   removed ljmp by inverse jump logic
	jz  00108$
00114$:
	clr	c
	clr	a
	subb	a,__mulsint_PARM_2
	mov	r6,a
	clr	a
	subb	a,(__mulsint_PARM_2 + 1)
	mov	r7,a
; Peephole 132   changed ljmp to sjmp
	sjmp 00109$
00108$:
	mov	r6,__mulsint_PARM_2
	mov	r7,(__mulsint_PARM_2 + 1)
00109$:
	mov	__muluint_PARM_2,r6
	mov	(__muluint_PARM_2 + 1),r7
	mov	dpl,r2
	mov	dph,r3
	push	ar4
	push	ar5
	lcall	__muluint
	mov	r2,dpl
	mov	r3,dph
	pop	ar5
	pop	ar4
;	_mulsint.c 33
	mov	a,r5
	xrl	a,ar4
; Peephole 110   removed ljmp by inverse jump logic
	jz  00102$
00115$:
;	_mulsint.c 34
	clr	c
	clr	a
	subb	a,r2
	mov	dpl,a
	clr	a
	subb	a,r3
	mov	dph,a
; Peephole 132   changed ljmp to sjmp
	sjmp 00104$
00102$:
;	_mulsint.c 36
	mov	dpl,r2
	mov	dph,r3
00104$:
	ret
	.area CSEG    (CODE)