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From: "brobecker at gnat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/29738] Arm M-profile dwarf2 unwinder performance suffers from exponential growth
Date: Thu, 02 Feb 2023 03:43:28 +0000 [thread overview]
Message-ID: <bug-29738-4717-FO18d20Pa9@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-29738-4717@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=29738
Joel Brobecker <brobecker at gnat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |brobecker at gnat dot com
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Joel Brobecker <brobecker at gnat dot com> ---
Just to clarify the impact of this issue (prior to fixing), Luis kindly
explained on gdb-patches:
> It affects 32-bit m-profile Arm targets that report the additional stack pointers. This is either
> the org.gnu.gdb.arm.m-system feature or the org.gnu.gdb.arm.secext feature.
>
> I'm fairly sure these features are only reported by emulators and bare-metal targets.
>
> Now, a 64-bit gdb can debug 32-bit Arm as well, so you could have a 64-bit gdb running into this too
> if the target is a 32-bit m-profile Arm. But the target is still 32-bit Arm.
>
> This doesn't affect AArch64 at all.
The patches have now been pushed to both master:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d72ba177c85f2ad18d0dcabdd8844532c9acb819
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2d36c9404e360126551fef20f3f79f5a56f6ad8b
... and the gdb-13-branch:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2d36c9404e360126551fef20f3f79f5a56f6ad8b
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7944d457903af4ba966df2a48aa6a2582b823b55
Closing.
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prev parent reply other threads:[~2023-02-02 3:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-31 18:18 [Bug tdep/29738] New: Arm v8 M-profile secure extension dwarf2 unwinder performance tomas.vanek at fbl dot cz
2022-11-02 8:16 ` [Bug tdep/29738] " luis.machado at arm dot com
2022-11-02 16:26 ` luis.machado at arm dot com
2022-11-03 8:20 ` luis.machado at arm dot com
2022-11-03 8:43 ` [Bug tdep/29738] Arm M-profile dwarf2 unwinder performance suffers from exponential grows tomas.vanek at fbl dot cz
2022-11-03 8:44 ` [Bug tdep/29738] Arm M-profile dwarf2 unwinder performance suffers from exponential growth tomas.vanek at fbl dot cz
2022-11-04 11:04 ` tomas.vanek at fbl dot cz
2022-11-04 15:27 ` torbjorn.svensson at st dot com
2023-02-02 3:43 ` brobecker at gnat dot com [this message]
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