[sdcc-devel] [ sdcc-Bugs-1228110 ] bank selection error

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Bugs item #1228110, was opened at 2005-06-27 11:31
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Category: pic14 target
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Editor (editorx)
Assigned to: Nobody/Anonymous (nobody)
Summary: bank selection error

Initial Comment:
after a function call, it doesn't select the correct
bank (i attach file)

in this steps:
;  putchar(chz = getchar());
	CALL	_getchar

;;     peep 2 - Removed redundant move
	BANKSEL	r0x28
	MOVWF	r0x28
	MOVWF	_chz
	MOVF	r0x28,W
	CALL	_putchar
ok i call getchar function, select chz registry to
assign getchar value and call putchar
and here work...

;#CSRC	up.c 73
;  putchar(chz);
	BANKSEL	_chz
	MOVF	_chz,W
	CALL	_putchar
2nd call of putchar function works (with banksel)

;#CSRC	up.c 74
;  putchar(chz);
	MOVF	_chz,W
	CALL	_putchar
here there is the problem, _putchar function alters the
bank and it doesnt run, if I insert a 
	BANKSEL	_chz
before MOVF _chz, W this asm work correctly


here i report putchar function
_putchar	;Function start
; 2 exit points
;#CSRC	up.c 16
;  void putchar(const char ch) {
	BCF	STATUS,5
	BCF	STATUS,6
	MOVWF	_TXREG

i attach the entire .c file, in the case my solution
was wrong

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