Hi,
You've found a bug that I think I fixed already some time ago. Please try
again with the latest snapshot.
Maarten
> Hello,
>
> I'm using an 8051-derivative with the 2.9.0 version of SDCC. I am
> trying to pass parameters in xdata like this:
>
> void WriteLEDByte( BYTE iOutput, BYTE xdata iData );
>
> void function( void )
> {
> WriteLEDByte( iOutput, LED_ADDRESS );
> ...
>
> The mapping is showing the input variable assigned to XSEG:
>
> XSEG 0000 007A = 122. bytes
> (REL,CON,XDATA)
>
> Value Global
> -------- --------------------------------
> ...
> 0D:0036 _WriteLEDByte_PARM_2
> ...
>
> But when the function is called, its being loaded into a data address:
>
> 1712 ;
> F340_USB0_Keyboard.c:782: WriteLEDByte( iOutput, LED_ADDRESS );
> 046C 75*09 72 1713 mov _WriteLEDByte_PARM_2,#0x72
> 046F 8A 82 1714 mov dpl,r2
> 0471 C0 02 1715 push ar2
> 0473 12s04rC9 1716 lcall _WriteLEDByte
>
> And the function is trying to read it from XDATA:
>
> 04C9 1808 _WriteLEDByte:
> ...
> 04DC 90s00r09 1821 mov dptr,#_WriteLEDByte_PARM_2
> 04DF E0 1822 movx a,@dptr
> 04E0 FB 1823 mov r3,a
> ...
>
> Does anyone know what is happening here?
>
> Thanks,
> Will.
>
>
>
>
>
>
>
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------------------------------------------------------------------------------
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