Re: [PATCH 30/31] Add debugger entry points for SPARC

[Jeffrey Merkey]

On 1/28/16, Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:
> Hi Jeff.
>
>> +++ b/arch/sparc/include/asm/kdebug.h
>> @@ -5,4 +5,9 @@
>>  #else
>>  #include <asm/kdebug_32.h>
>>  #endif
>> +
>> +static inline void arch_breakpoint(void)
>> +{
>> +	asm("ta	$0x7d");
>> +}
>>  #endif
> There seems to be some debugger infrastructure present already for kgdb,
> but I assume this cannot be used.
> Anyway - trap 0x7d is a debugger trap in sparc32.
> If CONFIG_KGDB is not defined then 0x7d is just a regular BAD_TRAP.
>
> For sparc64 trap 0x7d is something different.
> I did not conclude what was the right choice for neither.
>
> 	Sam
>

I'll go research that one.  If I am unsure I'll no-op the function for
sparc and let you guys decide how architecturally you wish to handle
that.

:-)

Jeff