Re: [RFC] New GDB Port CR16

[Yao Qi <yao at codesourcery dot com>]

On 08/30/2012 12:49 PM, Kaushik Phatak wrote:
> I have another cr16-tdep.c file (might call it cr16-linux-tdep.c) that would
> work with the kernel port. They have slightly different register set and use
> different breakpoint instruction. I am still not sure how to go about that part.

We've handled different breakpoint instructions in other ports, and you 
can follow the similar way for your port.

  You need a 'struct gdbarch_tdep' defined in ${arch}-tdep.h, with a 
field 'breakpoint', for example, which points to the exact breakpoint 
instruction you'll use.

  Set field 'breakpoint' in 
${arch}-linux-tdep.c:${arch}_uclinux_init_abi according to some ELF 
header or attributes.

  Return correct breakpoint instruction in ${arch}_breakpoint_from_pc.

Set ${arch} to 'tic6x' above, you'll see the example in details.

With respect to different register sets, you may have to use 'target 
description' feature in GDB.

--
Yao