Hi Peter,
> > Using the following (on PIC14):
> >
> > var_u_char_8_b = (unsigned char) (var_int_16 / 8);
> >
> > where:
> > var_u_char_8_b is unsigned char
> > var_int_16 is int
> >
> > var_u_char_8_b always seems to be zero.
I cannot reproduce this behaviour (unless I fail to initialize
var_int_16 to something != 0 that is...). I get beautiful results, gpsim
loops happily in my catch-all loop in
<code filename="bDIV.c">
typedef unsigned char uchar;
typedef unsigned int uint;
typedef unsigned long ulong;
__data __at (0x60) unsigned int var_u_int_16;
__data __at (0x62) unsigned char var_u_char_8;
__data __at (0x30) unsigned char var_u_char_8_b;
uchar
div1(int b)
{
var_u_int_16 = b;
var_u_char_8_b = (unsigned char) (var_u_int_16 / 7);
return var_u_char_8_b;
}
void
main(void)
{
uchar res;
res = div1(44);
while (res != 6);
res = div1(50);
while (res != 7);
res = div1(0);
while (res != 0);
while (1); /* gpsim reaches here */
}
</code>
sdcc -mpic14 -p16f877 bDIV.c
Could you post a more complete example showing your error?
> I was using the following so I could nail down where the offending
> variables were in gpsim, I declaired the varibles as shown here:
>
> __data __at (0x60) unsigned int var_u_int_16;
> __data __at (0x62) unsigned char var_u_char_8;
> __data __at (0x030) unsigned char var_u_char_8_b;
>
> var_u_char_8 and var_u_char_8_b seem to end up where told but var_u_int_16
> seems to end up at 0x63 & 0x64!
This was a bug, which is now (r4440) fixed: SDCC/pic14 emitted
_var_u_int_16 twice, once in its pinned location and again in udata. You
did get a warning from gplink about this though... (value of symbol
_var_u_int_16 changed in second pass).
--
Regards,
Raphael Neider
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