reading register information from corefile

reading register information from corefile

[Harsha HS]

Hello,

 I am trying to build a corss gdb for mips r3k architecture. I am able
to load any mips executable on gdb and can debug the same

But when i try to load core file i get the message that "GDB can't
read core files on this machine".

Can u please help me by pointing to the code where I have to add to 
struct target_ops the mips core file format and also the note section
in the core file to read the register information for a standalone
embedded application.

thanks
-harsha

Re: reading register information from corefile

[Daniel Jacobowitz]

On Mon, Feb 27, 2006 at 09:46:13PM +0530, Harsha HS wrote:
> Hello,
> 
>  I am trying to build a corss gdb for mips r3k architecture. I am able
> to load any mips executable on gdb and can debug the same
> 
> But when i try to load core file i get the message that "GDB can't
> read core files on this machine".
> 
> Can u please help me by pointing to the code where I have to add to 
> struct target_ops the mips core file format and also the note section
> in the core file to read the register information for a standalone
> embedded application.

No, it's not in target_ops.  Take a look at
set_gdbarch_regset_from_core_section instead.

-- 
Daniel Jacobowitz
CodeSourcery

Re: reading register information from corefile

[Harsha HS]

I am trying to build a corss gdb for mips r3k architecture. When i try
to load core file i get the message that "GDB can't read core files on
this machine", as the function find_target_core returns NULL.

find_target_core scans the struct target_ops for the core_stratum and
returns the appropriate target structure.

Can u please help me on how to initialize the struct target_ops with
the relevent values to support the loading of the core file specific
to mips target.

thanks,
harsha

Re: reading register information from corefile

[Daniel Jacobowitz]

On Tue, Feb 28, 2006 at 09:15:57PM +0530, Harsha HS wrote:
> I am trying to build a corss gdb for mips r3k architecture. When i try
> to load core file i get the message that "GDB can't read core files on
> this machine", as the function find_target_core returns NULL.
> 
> find_target_core scans the struct target_ops for the core_stratum and
> returns the appropriate target structure.
> 
> Can u please help me on how to initialize the struct target_ops with
> the relevent values to support the loading of the core file specific
> to mips target.

It sounds like you didn't link in core file support.  Add it to
the list of target-specific files for your target - look at some of the
Linux or BSD targets for an example.

-- 
Daniel Jacobowitz
CodeSourcery