RE: Re: PB555 and C++

I regularly use the stabdard CW libraries running from internal SRAM, so
they can fit but right now I don't have access to my data base to
determine if I use any specific settings, althought I don't think I done
anyting special.

I'm not familiar with the board you're using - doesn't it have external
memory? Even if you do fit the standard CW libraries into 26K, you'll
soon run out of space once you start compiling larger projects.

Regards,
Allan

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of coles555
Sent: Thursday, October 27, 2005 10:18 PM
To: [email protected]
Subject: [MPC500] Re: PB555 and C++


--- In [email protected], "Liechty Ronald-RAT109" <mwron@m...> 
wrote:
Hi Ron,
Thank you so much for taking the time to answer my question. Please 
correct me if I am wrong but I believe only the MPC556 supports code 
compression. Also, there are two files (MSL_C++.PPCEABI.BARE.H.a and 
MSL_C.PPCEABI.BARE.H.a) for MSL library. Is it okay for me to take 
out MSL_C.PPCEABI.BARE.H.a file since it is only the C library? I 
guess what I am trying to ask is if both MSL library files are needed?

Thanks!
Lei


> Hello Lei,
> 
> One of our engineers said there are 3 possibilities.
> 
> 
> 1) There are some variants of the 5xx chips that support code 
> compression which if you enable it (please see the documentation)
there
> is a post link phase using a tool called Squeezard which will
compress
> the code and the chip has the ability to read the compressed code.
If
> you don't have one of those chips or if your copy of CW doesn't
support
> it, then it won't work for you.
> 
> 
> 2) Starting about a year or 2 ago, CW EPPC started shipping size
reduced
> versions of the C libs. These libs have SZ in the name and we only
ship
> them prebuilt for certain processors such as e500 for which the lib
is
> called MSL_C.PPCEABI.bare.SZ.E.a. You can rebuild the H MSL C lib
with
> the prefix file ansi_prefix.PPCEABI.bare.SZ.h. You also need to use 
> ansi_prefix.PPCEABI.bare.SZ.h to build your project. Again if your
copy
> of CW doesn't have ansi_prefix.PPCEABI.bare.SZ.h, then it won't
work for
> you.
> 
> 
> 3) Change the floating point support to none assuming you do not
need it
> and use N libs. If you are using cout or printf, those functions can 
> cause some bloat and you can hack at their implementation to only 
> support the format characters you need.
> 
> Ron
> 
> --
> Ron Liechty  
> Ombudsman Freescale Developer Technology
> ron.liechty@f... 
> 
> coles555 Wrote:
>  
> Hi there,
> I am working with a PB555 board using Codewarrior for development 
> purposes. Now all the code that I am using are written in C++ and 
the 
> Metrowerks Standard C++ Library (MSL_C++.PPCEABI.BARE.H.a and
> MSL_C.PPCEABI.BARE.H.a) takes up 38 Kbytes of data space. However, 
the 
> PB555 board has only a mere 26 Kbytes of SRAM. My question is
whether 
> or not it is possible to implement C++ code in the PB555 board? If
so, 
> how can those C++ Library data fit within SRAM?
>







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