Re: [PING][PATCH 0/3] AArch64 SVE: Support for changing vector length

[Alan Hayward <Alan dot Hayward at arm dot com>]

...And pushed.


Alan.

> On 8 Apr 2019, at 16:46, Alan Hayward <Alan.Hayward@arm.com> wrote:
> 
> Ping.
> 
> AArch64 only changes, so if there are no comments by the end of the week,
> I’ll push on Monday.
> 
> 
> Self review: Spelling mistake “differemt” in the ChangeLog for patch 2. :)
> 
> 
> Alan.
> 
> 
>> On 22 Mar 2019, at 16:27, Alan Hayward <Alan.Hayward@arm.com> wrote:
>> 
>> On an AArch64 SVE system it is possible to change the vector length of the
>> current thread (not process!) using prctl.  Currently GDB will ignore any
>> such changes on a process being debugged.
>> 
>> This patch series supports these changes by using an override of
>> thread_architecture ().  An example is given in patch 2.
>> 
>> Note that this does not yet work when debugging a process attached via
>> gdbserver. Here GDB will continue to ignore the change.  Getting this
>> working is a more larger change which I'm still looking into.
>> 
>> Tested on a system emulator running Linux.
>> 
>> Once real world hardware SVE running Linux is available I'd like to add
>> some tests for this.  until there is not much point as running the
>> testsuite on a fully emulated system is fairly painful.
>> 
>> 
>> Alan Hayward (3):
>> AArch64: Tidy up aarch64_gdbarch_init
>> AArch64 SVE: Check for vector length change when getting gdbarch
>> AArch64 SVE: Support changing vector lengths for ptrace
>> 
>> gdb/aarch64-linux-nat.c            | 36 ++++++++++++
>> gdb/aarch64-tdep.c                 | 92 +++++++++++++++---------------
>> gdb/nat/aarch64-sve-linux-ptrace.c | 92 ++++++++++++++++--------------
>> gdb/nat/aarch64-sve-linux-ptrace.h | 12 +++-
>> 4 files changed, 140 insertions(+), 92 deletions(-)
>> 
>> -- 
>> 2.17.2 (Apple Git-113)
>> 
>