Microblaze asm and C shared variables

[Andrea Sabatini]

Hi all.

I have to write a code for the MicroBlaze soft processor (Xilinx Platform
Studio 6.1.03i) and I am facing the following problem: both my assembly code
and my c code have to access some shared (global!) variables but I do not
know how to do it. I downloaded all the MicroBlaze documentation from the
Xilinx web site (or at least I am convinced I did) but I did not find any
clue. Does someone of you out there know how to do it?

Regards,

Andrea Sabatini

 

[Matthew Ouellette]

Andrea,

If you are looking for ways on how to pass variables to assembly
instructions in MicroBlaze, check out the very last passage in the
following solution record:

http://support.xilinx.com/xlnx/xil_ans_display.jsp?iLanguageID=1&iCountryID=1&getPagePath=18561

Hope this helps,

Matt

Andrea Sabatini wrote:

Hi all.

I have to write a code for the MicroBlaze soft processor (Xilinx Platform
Studio 6.1.03i) and I am facing the following problem: both my assembly code
and my c code have to access some shared (global!) variables but I do not
know how to do it. I downloaded all the MicroBlaze documentation from the
Xilinx web site (or at least I am convinced I did) but I did not find any
clue. Does someone of you out there know how to do it?

Regards,

Andrea Sabatini

 

[Andrea Sabatini]

Matt,

Thank you for your reply. I am now facing another problem. I would like to
call C routines from my assemble code but I did not found a place where
there is written how to do it. I am able to do it with routines that do not
need input parameters and do not return any value but I need to know how to
do it in a general case (presence of ins and outs).

Thanks in advance,

Andrea


"Matthew Ouellette" <matt.ouellette@xilinx.comNOSPAM> wrote in message
news:cai9bm$jn31@xco-news.xilinx.com...

Andrea,

If you are looking for ways on how to pass variables to assembly
instructions in MicroBlaze, check out the very last passage in the
following solution record:


http://support.xilinx.com/xlnx/xil_ans_display.jsp?iLanguageID=1&iCountryID=

1&getPagePath=18561

Hope this helps,

Matt

Andrea Sabatini wrote:

Hi all.

I have to write a code for the MicroBlaze soft processor (Xilinx
Platform
Studio 6.1.03i) and I am facing the following problem: both my assembly
code
and my c code have to access some shared (global!) variables but I do
not
know how to do it. I downloaded all the MicroBlaze documentation from
the
Xilinx web site (or at least I am convinced I did) but I did not find
any
clue. Does someone of you out there know how to do it?

Regards,

Andrea Sabatini

 

[roller]

"Andrea Sabatini" <andrea@dapdesign.com> escribió en el mensaje
news:40cd7bb7$0$6795$e4fe514c@news.xs4all.nl...

Matt,

Thank you for your reply. I am now facing another problem. I would like to
call C routines from my assemble code but I did not found a place where
there is written how to do it. I am able to do it with routines that do
not
need input parameters and do not return any value but I need to know how
to
do it in a general case (presence of ins and outs).

check out the C calling convention

Thanks in advance,

Andrea


"Matthew Ouellette" <matt.ouellette@xilinx.comNOSPAM> wrote in message
news:cai9bm$jn31@xco-news.xilinx.com...
Andrea,

If you are looking for ways on how to pass variables to assembly
instructions in MicroBlaze, check out the very last passage in the
following solution record:



http://support.xilinx.com/xlnx/xil_ans_display.jsp?iLanguageID=1&iCountryID=
1&getPagePath=18561

Hope this helps,

Matt

Andrea Sabatini wrote:

Hi all.

I have to write a code for the MicroBlaze soft processor (Xilinx
Platform
Studio 6.1.03i) and I am facing the following problem: both my
assembly
code
and my c code have to access some shared (global!) variables but I do
not
know how to do it. I downloaded all the MicroBlaze documentation from
the
Xilinx web site (or at least I am convinced I did) but I did not find
any
clue. Does someone of you out there know how to do it?

Regards,

Andrea Sabatini