_isdigit.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 10:57:25 2001

;--------------------------------------------------------
	.module _isdigit
	
;--------------------------------------------------------
; Public variables in this module
;--------------------------------------------------------
	.globl _isdigit
;--------------------------------------------------------
; 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)
_isdigit_c_1_1::
	.ds 1
;--------------------------------------------------------
; 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 'isdigit'
;------------------------------------------------------------
;c                         Allocated to in memory with name '_isdigit_c_1_1'
;	_isdigit.c 26
;	-----------------------------------------
;	 function isdigit
;	-----------------------------------------
_isdigit:
	ar2 = 0x02
	ar3 = 0x03
	ar4 = 0x04
	ar5 = 0x05
	ar6 = 0x06
	ar7 = 0x07
	ar0 = 0x00
	ar1 = 0x01
;	_isdigit.c 31
	push	dpl
	mov	dptr,#_isdigit_c_1_1
	pop	acc
	movx	@dptr,a
;	_isdigit.c 29
	mov	dptr,#_isdigit_c_1_1
	movx	a,@dptr
	mov	r2,a
	cjne	r2,#0x30,00108$
00108$:
; Peephole 132   changed ljmp to sjmp
; Peephole 160   removed sjmp by inverse jump logic
	jc   00102$
00109$:
	clr	c
	mov	a,#0x39
	subb	a,r2
; Peephole 132   changed ljmp to sjmp
; Peephole 160   removed sjmp by inverse jump logic
	jc   00102$
00110$:
;	_isdigit.c 30
	mov	dpl,#0x01
; Peephole 132   changed ljmp to sjmp
	sjmp 00104$
00102$:
;	_isdigit.c 31
	mov	dpl,#0x00
00104$:
	ret
	.area CSEG    (CODE)