[U-Boot] [PATCH v2 1/1] arm: print instructions pointed to by pc

[Marek Vasut]

On 05/13/2018 02:22 PM, Tuomas Tynkkynen wrote:
> Hi,
> 
> On Thu, 10 May 2018 16:38:30 +0200
> Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
> 
>> If an exception occurs in a loaded image and the relocation offset is
>> unknown, it is helful to know the instructions pointed to by the
>> program counter. This patch adds the missing output.
>>
>> A possible output is:
>>     *pc: fb de f7 e7 1e ff 2f e1 01 00 50 e3 f0 4d 2d e9 01 80 a0 e1
>>
>> The output can be disassembled with
>>     xxd -pc -r - > a.out
>>     $(CROSS_COMPILE)objdump -D -marm -b binary a.out
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
>> ---
>> v2
>> 	print bytes not halfwords
> 
> Note that Linux already comes with a scripts/decodecode tool where you paste the
> output of an Oops and it disassembles the "Code: " line from the dump. So I'd
> vote for importing scripts/decodecode from Linux and making U-Boot's output
> compatible with Linux.

Sounds good.

btw if you get exception because the memory at PC is inaccessible, this
will trigger a double-fault I think.

-- 
Best regards,
Marek Vasut