From: Simon Marchi <simon.marchi@polymtl.ca>
To: Pedro Alves <palves@redhat.com>
Cc: Alan Hayward <Alan.Hayward@arm.com>,
GDB Patches <gdb-patches@sourceware.org>,
Simon Marchi <simon.marchi@ericsson.com>, nd <nd@arm.com>
Subject: Re: [PATCH v2 02/10] Add Aarch64 SVE Linux headers
Date: Tue, 12 Jun 2018 15:06:00 -0000 [thread overview]
Message-ID: <104a9ac067b435bd80a0b19fc638d0d0@polymtl.ca> (raw)
In-Reply-To: <8f6d2b87-707a-3e34-325c-ed9338e9c1f6@redhat.com>
On 2018-06-12 10:43, Pedro Alves wrote:
> What's "this" ?
From what I understand, "this" is the suggestion I made in my previous
mail, require the user to build against the headers of a recent kernel
(that provide the SVE macros), and not provide a stop-gap copy in the
GDB tree. It would break the buildbot, because they have an old kernel
that doesn't provide the SVE macros the GDB code uses (e.g.
SVE_PT_REGS_OFFSET).
> How about we add a configure check to check if the system headers
> support
> the needed SVE bits, and guard the native gdb SVE bits with
> HAVE_AARCH64_SVE or something like that?
I think that would be a good compromise. By default, building on a
machine with an older kernel would exclude SVE support. But it would be
possible to add it by pointing to the headers of a recent kernel. So
when building on a machine with an older kernel...
- ... without any special flags, you don't get SVE support.
- ... with just --enable-sve, you get a configure error.
- ... with --enable-sve and CFLAGS/CXXFLAGS pointing to headers of a
kernel w/ SVE macros, you get SVE support.
Does that make sense?
Simon
next prev parent reply other threads:[~2018-06-12 15:06 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-06 15:16 [PATCH v2 00/10] gdb/gdbserver support for aarch64 SVE Alan Hayward
2018-06-06 15:17 ` [PATCH v2 03/10] Add reg_buffer_common Alan Hayward
2018-06-07 20:19 ` Simon Marchi
2018-06-07 20:42 ` Simon Marchi
2018-06-08 14:14 ` Alan Hayward
2018-06-10 22:21 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 04/10] Add regcache raw_compare method Alan Hayward
2018-06-07 20:56 ` Simon Marchi
2018-06-08 15:16 ` Alan Hayward
2018-06-10 22:26 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 08/10] Enable Aarch64 SVE for gdbserver Alan Hayward
2018-06-11 0:49 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 05/10] Ptrace support for Aarch64 SVE Alan Hayward
2018-06-10 22:52 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 10/10] Remove reg2 section from Aarch64 SVE cores Alan Hayward
2018-06-11 2:47 ` Simon Marchi
2018-06-11 16:37 ` Alan Hayward
2018-06-06 15:17 ` [PATCH v2 06/10] Add Aarch64 SVE dwarf regnums Alan Hayward
2018-06-11 0:43 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 02/10] Add Aarch64 SVE Linux headers Alan Hayward
2018-06-08 14:13 ` Alan Hayward
2018-06-08 14:37 ` Simon Marchi
2018-06-08 15:23 ` Simon Marchi
2018-06-12 14:37 ` Alan Hayward
2018-06-12 14:43 ` Pedro Alves
2018-06-12 15:06 ` Simon Marchi [this message]
2018-06-12 15:11 ` Pedro Alves
2018-06-12 15:21 ` Simon Marchi
2018-06-12 15:09 ` Alan Hayward
2018-06-12 14:51 ` Simon Marchi
2018-06-12 16:34 ` Sergio Durigan Junior
2018-06-12 17:51 ` Alan Hayward
2018-06-12 20:29 ` Sergio Durigan Junior
2018-06-15 9:45 ` Ramana Radhakrishnan
2018-06-15 17:14 ` Alan Hayward
2018-09-20 21:16 ` Status of the AArch* builders (was: Re: [PATCH v2 02/10] Add Aarch64 SVE Linux headers) Sergio Durigan Junior
2018-09-24 14:16 ` Alan Hayward
2018-09-24 14:42 ` Status of the AArch* builders Sergio Durigan Junior
2018-10-11 9:23 ` Alan Hayward
2018-10-12 19:06 ` Sergio Durigan Junior
2018-10-15 10:16 ` Alan Hayward
2018-10-15 12:42 ` Sergio Durigan Junior
2018-10-15 14:02 ` Alan Hayward
2018-10-15 15:32 ` Sergio Durigan Junior
2018-10-17 18:46 ` Sergio Durigan Junior
2018-10-24 9:56 ` Alan Hayward
2018-10-25 16:26 ` Sergio Durigan Junior
2018-06-08 15:27 ` [PATCH v2 02/10] Add Aarch64 SVE Linux headers Alan Hayward
2018-06-06 15:17 ` [PATCH v2 09/10] Ptrace support for AArch64 SVE gdbsever Alan Hayward
2018-06-11 2:43 ` Simon Marchi
2018-06-11 2:44 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 01/10] Aarch64 SVE pseudo register support Alan Hayward
2018-06-06 22:17 ` Simon Marchi
2018-06-07 9:34 ` Alan Hayward
2018-06-06 15:17 ` [PATCH v2 07/10] Increase gdbsever PBUFSIZ Alan Hayward
2018-06-11 0:46 ` Simon Marchi
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