MPC55xx Warning for Undefined Behavior

[Joel Sherrill]

On 10/13/2014 2:56 PM, Peter Dufault wrote:
> On Oct 13, 2014, at 15:22 , Peter Dufault <dufault at hda.com> wrote:
>
>> This looks like an issue in the header.  I downloaded the MPC5674F Reference Manual and it does specify 479 interrupt request sources.  See table 9-2, INTC Memory Map
>>
>> Base + (0x0040–0x0219)  INTC_PSRn—INTC priority select registers 2 0–479 
> Last posting on this, because it's confused and I'll defer to someone with the hardware who can puzzle this out.
>
> The Freescale manual is inconsistent - there isn't space for 479 (1-byte) registers in the specified memory range 0x0040 through 0x0219 that I am quoting above.  That amount allows for the 474 registers in the Freescale header file and not the 479 in the RTEMS header file. So if I had to guess I'd guess the RTEMS header is wrong because someone read the Freescale manual and saw it clearly say there are 479 registers.
That sounds enormously like a typo in the manual since the warning says
474u.
The compiler is catching that there isn't enough space in that array.

I am prone to change 479 to 474 as you suggested but I would like another
opinion first.

Thanks for tracking this one down.
> Peter
> -----------------
> Peter Dufault
> HD Associates, Inc.      Software and System Engineering
>

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