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Re: [PATCH] includes linux-record.c to be common for all arch. (arm-reversible>phase-3)

Hi Hui,

please ignore the syscall record patch;
I will be working on resolving certain things from gdb.reverse suite
on ARM for the first patch.


On Tue, Jun 19, 2012 at 10:43 AM, oza Pawandeep <> wrote:
> Let me elaborate it further how it works.
>> Â the bare metal insn is thought to be separately working; where it doesnt support syscall.
>> now with this patch syscall support is provided; it is done in phases. I believe the change is huge and independent enough;
>> this first patch has been in with the approval of Tom and it was under review for more than a year; I would have appreciated the early comments. the patch has been reviewed with all aspects. (of course I would expect some hiccups, that would be solved in due time)
>> as far as syscall number is concerned; yes I have read the code and amd64_canonicalize_syscall. If you re-read the patch, arm_canonicalize_syscall is alredy defined, the question is not at internal gdb syscall number but at different level of conflicting syscall numbers.
> please have a look at the chain
> Regards,
> Oza.
> On Tue, Jun 19, 2012 at 7:04 AM, Hui Zhu <> wrote:
>> On Tue, Jun 19, 2012 at 2:49 AM, oza Pawandeep <> wrote:
>>> Hi Hui,
>>> The phase2 works indepedently. It does not need syscall really. If i recall
>>> correctly michael snyder suggested that i make two patches. The first patch
>>> contains arm instructions and the and second part contains linux abi
>>> support.
>> I think he's means is divide the patch to insn part and syscall part.
>> But if you want to post to maillist or commit to cvs tree. ÂI think
>> they need to be commit together.
>> The reason is without the syscall-record support, how the patch test
>> with the testsuite? ÂWithout that, How do you prove that your code is
>> correct?
>> For the x86-record code, the insn and syscall patch is commit
>> together. ÂSo go back to my suggest, move all the code about arm
>> record to a separate branch. ÂAnd when you done all of them and past
>> the test, re-commit them.
>>> The second part which i am working now requires linux-record.o hence i wrote
>>> we require it to be compiled with the second part of patch.
>>> So first i try to chek in minor change of congpfigure.tgt
>>> And then i check syscall record on arm.
>>> By the way there is one more query which has been there under discussion.
>>> When you made gdb sys call defination, it was thought as generic, but it
>>> does not turn out to be applicable for arm as syscall number differs.
>>> Sometime back tom had suggestion of having xml files under gdb/syscalls for
>>> arm arch and x86 separately; do you have any inputs to it? Of course it
>>> would change x86 syscall record to be read from xml files.j
>> Do you really see the code of syscall-record part? ÂI suggest you
>> re-read the code.
>> The linux-syscall-record code can be work with most of the arch
>> because before call record_linux_system_call, the syscall number will
>> be translate to enum gdb_syscall. ÂYou can see the
>> amd64_canonicalize_syscall as the example.
>> Thanks,
>> Hui
>>> Regards,
>>> Oza.
>>> On Jun 18, 2012 2:22 PM, "Hui Zhu" <> wrote:
>>>> On Mon, Jun 18, 2012 at 7:49 PM, oza Pawandeep <>
>>>> wrote:
>>>> > Yes I agree; as I integrated both of them and post them at once.
>>>> > sorry about confusion; this patch has to be ignored.
>>>> >
>>>> > In fact I wanted this patch to be approved first because without which
>>>> > sys call patch would not compile.
>>>> Why you cannot commit a patch list when the function is done?
>>>> I think the function in the trunk tree need be done before commit to
>>>> it. ÂIf you want work in cvs, I suggest you use the branch first.
>>>> On the other hand, I heard that some of code of arm record is checked
>>>> in. ÂI don't think it is right. ÂBecause without syscall support, it
>>>> cannot work, right?
>>>> So what I suggest is move all the code about arm record to a separate
>>>> branch. ÂAnd when all of the arm record function done, you re-send all
>>>> of them.
>>>> Thanks,
>>>> Hui
>>>> >
>>>> > Regards,
>>>> > Oza.
>>>> >
>>>> > On Mon, Jun 18, 2012 at 2:54 PM, Yao Qi <> wrote:
>>>> >> On 06/18/2012 05:08 PM, oza Pawandeep wrote:
>>>> >>> diff -urN orig/configure.tgt new/configure.tgt
>>>> >>> --- orig/configure.tgt    Â2012-06-18 12:36:47.274501400 +0530
>>>> >>> +++ new/configure.tgt 2012-06-18 12:31:47.335501400 +0530
>>>> >>> @@ -76,7 +76,7 @@
>>>> >>> Âarm*-*-linux*)
>>>> >>> Â Â Â # Target: ARM based machine running GNU/Linux
>>>> >>> Â Â Â gdb_target_obs="arm-tdep.o arm-linux-tdep.o glibc-tdep.o \
>>>> >>> - Â Â Â Â Â Â Â Â Â Â solib-svr4.o symfile-mem.o linux-tdep.o"
>>>> >>> + Â Â Â Â Â Â Â Â Â Â solib-svr4.o symfile-mem.o linux-tdep.o
>>>> >>> linux-record.o"
>>>> >>> Â Â Â build_gdbserver=yes
>>>> >>> Â Â Â ;;
>>>> >>> Âarm*-*-netbsd* | arm*-*-knetbsd*-gnu)
>>>> >>>
>>>> >>> ok to check in ?
>>>> >>
>>>> >> It is not good to post the same change twice in different mails. ÂThis
>>>> >> change makes no sense until your 'arm-syscall record' patch is
>>>> >> approved.
>>>> >> ÂI noticed that this change has been included in your 'arm-syscall
>>>> >> record' patch, so I think patch here doesn't have to reviewed.
>>>> >>
>>>> >> --
>>>> >> Yao (éå)
>>>> >>
>>>> >>

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