[avr-gcc-list] ASM in WinAVR GCC

[Panther Electronics]

Hi,

can this problem be solved?

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/signal.h>

#define trg 0
#define db_time 25
unsigned char mem_db;
unsigned char result;
unsigned volatile char temp, wreg;

unsigned char delays(unsigned char pin, unsigned char port);

int main(void)
{
        for (;;)
        {
                temp= 0x01;
                wreg =0x17;
                wreg = delays(temp, wreg);
        }
}

unsigned char delays (unsigned char pin, unsigned char port)
{
        unsigned char __t;
        asm volatile(
        "nop" "\n\t"
        "nop" "\n\t"
        "mov %0, %1" "\n\t"
        "out %2, %1" "\n\t"
        : "=&r" (__t)
        : "a,I" (pin), "a,I" (port)
        );
        return ( 0 );
}

>make all"-------- begin --------"
avr-gcc --version
avr-gcc (GCC) 3.3 20021209 (experimental)
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

"Size before:"
   text    data     bss     dec     hex filename
      0     122       0     122      7a Dd.hex
avr-gcc -c -g -Os -funsigned-char -funsigned-bitfields -fpack-struct 
-fshort-enums -Wall -Wstrict-prototypes -Wa,-ahlms=Dd.lst -mmcu=at90s2313 -I. 
Dd.c -o Dd.o
Dd.c: In function `delays':
Dd.c:37: error: operand constraints for `asm' differ in number of alternatives
make: *** [Dd.o] Error 1
>Exit code: 2

Thanks in advance

Srikanth Kamath T
PS any URL to check this out in depth; tried the GCC, it list all the 
constrains but does not inform how to work arround.


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