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Re: [Qemu-ppc] [Qemu-devel] [PATCH] gdbstub: Synchronize CPU state uncon
From: |
Peter Maydell |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] [PATCH] gdbstub: Synchronize CPU state unconditionally in gdb_set_cpu_pc |
Date: |
Mon, 16 Apr 2012 18:54:53 +0100 |
gdbstub isn't my domain, patches should go via Anthony or Blue
I guess. Patchwork url:
http://patchwork.ozlabs.org/patch/146153/
thanks
-- PMM
On 16 April 2012 18:49, Alexander Graf <address@hidden> wrote:
> Looks great to me, push it :)
>
> Alex
>
> On 10.04.2012, at 14:43, Peter Maydell wrote:
>
>> Combination ping^2 and apology for forgetting to cc qemu-ppc.
>>
>> -- PMM
>>
>> On 3 April 2012 12:57, Peter Maydell <address@hidden> wrote:
>>> Ping?
>>>
>>> -- PMM
>>>
>>> On 12 March 2012 16:24, Peter Maydell <address@hidden> wrote:
>>>> Synchronize the CPU state via cpu_sychronize_state() unconditionally
>>>> in gdb_set_cpu_pc() rather than only in some of the target ifdef
>>>> ladder cases.
>>>>
>>>> We can divide the CPUs into three categories:
>>>> * non-KVM targets: no change of behaviour since we will use the
>>>> kvm-stub.c no-op function.
>>>> * i386 and s390: no change of behaviour since they were already
>>>> calling this function
>>>> * PPC (in KVM mode): this fixes an error: failing to synchronise
>>>> was accidental and probably a bug.
>>>>
>>>> This also paves the way for other targets (specifically ARM) which
>>>> can add KVM support in future without having to add another target
>>>> specific change to this bit of code.
>>>>
>>>> Signed-off-by: Peter Maydell <address@hidden>
>>>> ---
>>>> Alex: could you test the KVM PPC case, please, since that's the only
>>>> one where we actually change behaviour here?
>>>>
>>>> gdbstub.c | 3 +--
>>>> 1 files changed, 1 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/gdbstub.c b/gdbstub.c
>>>> index ef95ac2..776dcc5 100644
>>>> --- a/gdbstub.c
>>>> +++ b/gdbstub.c
>>>> @@ -1904,8 +1904,8 @@ static void gdb_breakpoint_remove_all(void)
>>>>
>>>> static void gdb_set_cpu_pc(GDBState *s, target_ulong pc)
>>>> {
>>>> -#if defined(TARGET_I386)
>>>> cpu_synchronize_state(s->c_cpu);
>>>> +#if defined(TARGET_I386)
>>>> s->c_cpu->eip = pc;
>>>> #elif defined (TARGET_PPC)
>>>> s->c_cpu->nip = pc;
>>>> @@ -1930,7 +1930,6 @@ static void gdb_set_cpu_pc(GDBState *s, target_ulong
>>>> pc)
>>>> #elif defined (TARGET_ALPHA)
>>>> s->c_cpu->pc = pc;
>>>> #elif defined (TARGET_S390X)
>>>> - cpu_synchronize_state(s->c_cpu);
>>>> s->c_cpu->psw.addr = pc;
>>>> #elif defined (TARGET_LM32)
>>>> s->c_cpu->pc = pc;
>>>> --
>>>> 1.7.1
>>>>
>>>>
>
--
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