#1247 PIC14, bitwise test
Description:
When compiling the C-file, the code isn't working. After checking the asm file the bitwise operations seems to be wrong => i&0x01 should be BTFSC r0x1000,0 now it is BTFSC r0x1000,7
SDCC version: Latest svn (
SDCC : mcs51/gbz80/z80/avr/ds390/pic16/pic14/TININative/xa51/ds400/hc08 2.6.1 #4477 (Nov 26 2006) (UNIX))
Compile Command: "sdcc --verbose -mpic14 -p16f690 test.c -I/usr/local/share/sdcc/include"
Sample Codes:
C-code
if((i & 0x01)==0) PORTC = 0x03;
if((i & 0x02)==0) PORTC = 0x03;
if((i & 0x04)==0) PORTC = 0x03;
if((i & 0x80)==0) PORTC = 0x10;
cuts from ASM-code
; .line 10; "test.c" if((i & 0x01)==0)
BANKSEL r0x1000
BTFSC r0x1000,7
GOTO _00106_DS_
; .line 12; "test.c" if((i & 0x02)==0)
BANKSEL r0x1000
BTFSC r0x1000,0
GOTO _00108_DS_
; .line 14; "test.c" if((i & 0x04)==0)
BANKSEL r0x1000
BTFSC r0x1000,1
GOTO _00110_DS_
; .line 24; "test.c" if((i & 0x80)==0)
BANKSEL r0x1000
BTFSC r0x1000,6
GOTO _00124_DS_
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This is an off-by-one bug regarding the bit-position (7(= -1) for 0, 0 for 1, 1 for 2, 6 for 7). Already fixed this one in r4478, you are just a single revision too early! Please update and try again.
Regards,
Raphael
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