From: Keith Seitz <keiths@redhat.com>
To: John Baldwin <jhb@FreeBSD.org>, gdb-patches@sourceware.org
Subject: Re: [PATCH v6 00/15] Handle variable XSAVE layouts
Date: Tue, 25 Jul 2023 11:43:06 -0700 [thread overview]
Message-ID: <aab75fd3-adb0-8b65-f2cd-903cf059958d@redhat.com> (raw)
In-Reply-To: <b1ab14cd-91b7-ebc7-b7f5-9d4344f95263@FreeBSD.org>
On 7/25/23 11:15, John Baldwin wrote:
> On 7/25/23 10:17 AM, Keith Seitz wrote:
>> On 7/14/23 08:51, John Baldwin wrote:
>> 0x55ef54d4e9bf memcpy
>> /usr/include/bits/string_fortified.h:29
>> 0x55ef54d4e9bf _Z18i387_collect_xsavePK8regcacheiPvi
>> ../../gdb/i387-tdep.c:1543
>
> Can you confirm where this is in your patched copy? For me this line is here:
>
> if (gcore)
> {
> /* Clear XSAVE extended state. */
> memset (regs, 0, tdep->xsave_layout.sizeof_xsave);
>
> /* Update XCR0 and `xstate_bv' with XCR0 for gcore. */
> if (tdep->xsave_xcr0_offset != -1)
>>>> memcpy (regs + tdep->xsave_xcr0_offset, &tdep->xcr0, 8);
> memcpy (XSAVE_XSTATE_BV_ADDR (regs), &tdep->xcr0, 8);
> }
Yes, that's the problem spot.
> If you have a core handy, could you provide the output of 'p tdep->xsave_layout'
> and 'p tdep->xsave_xcr0_offset'?
>
I do have a corefile:
(gdb) up
#6 i387_collect_xsave (regcache=0x5568a96b1ab0, regnum=-1, xsave=0x0, gcore=1)
at ../../gdb/i387-tdep.c:1543
1543 memcpy (regs + tdep->xsave_xcr0_offset, &tdep->xcr0, 8);
(gdb) p tdep->xsave_layout
$1 = {sizeof_xsave = 0, avx_offset = 0, bndregs_offset = 0, bndcfg_offset = 0,
k_offset = 0, zmm_h_offset = 0, zmm_offset = 0, pkru_offset = 0}
(gdb) p tdep->xsave_xcr0_offset
$2 = 464
If there's anything I can do to help, please do not hesitate to ask!
Keith
next prev parent reply other threads:[~2023-07-25 18:43 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-14 15:51 John Baldwin
2023-07-14 15:51 ` [PATCH v6 01/15] x86: Add an x86_xsave_layout structure to handle " John Baldwin
2023-07-26 19:22 ` Simon Marchi
2023-07-26 21:27 ` John Baldwin
2023-07-26 22:51 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 02/15] gdb: Store an x86_xsave_layout in i386_gdbarch_tdep John Baldwin
2023-07-14 15:51 ` [PATCH v6 03/15] core: Support fetching x86 XSAVE layout from architectures John Baldwin
2023-07-26 19:37 ` Simon Marchi
2023-07-26 21:28 ` John Baldwin
2023-07-14 15:51 ` [PATCH v6 04/15] nat/x86-cpuid.h: Add x86_cpuid_count wrapper around __get_cpuid_count John Baldwin
2023-07-26 19:41 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 05/15] x86 nat: Add helper functions to save the XSAVE layout for the host John Baldwin
2023-07-26 19:48 ` Simon Marchi
2023-07-26 21:37 ` John Baldwin
2023-07-14 15:51 ` [PATCH v6 06/15] gdb: Update x86 FreeBSD architectures to support XSAVE layouts John Baldwin
2023-07-26 20:04 ` Simon Marchi
2023-07-26 21:43 ` John Baldwin
2023-07-28 21:23 ` [PATCH v6a " John Baldwin
2023-08-28 16:01 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 07/15] gdb: Support XSAVE layouts for the current host in the FreeBSD x86 targets John Baldwin
2023-07-26 20:26 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 08/15] gdb: Update x86 Linux architectures to support XSAVE layouts John Baldwin
2023-07-26 20:45 ` Simon Marchi
2023-07-26 21:16 ` John Baldwin
2023-07-27 21:48 ` Simon Marchi
2023-07-28 16:30 ` John Baldwin
2023-07-28 17:58 ` Simon Marchi
2023-07-28 21:30 ` John Baldwin
2023-07-28 21:29 ` [PATCH v6a " John Baldwin
2023-08-14 17:52 ` John Baldwin
2023-08-28 16:21 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 09/15] gdb: Support XSAVE layouts for the current host in the Linux x86 targets John Baldwin
2023-07-26 20:51 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 10/15] gdb: Use x86_xstate_layout to parse the XSAVE extended state area John Baldwin
2023-08-28 16:34 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 11/15] gdbserver: Add a function to set the XSAVE mask and size John Baldwin
2023-08-28 16:46 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 12/15] gdbserver: Refactor the legacy region within the xsave struct John Baldwin
2023-08-28 16:50 ` Simon Marchi
2023-08-28 17:32 ` John Baldwin
2023-07-14 15:51 ` [PATCH v6 13/15] gdbserver: Use x86_xstate_layout to parse the XSAVE extended state area John Baldwin
2023-08-28 18:15 ` Simon Marchi
2023-08-28 18:37 ` John Baldwin
2023-07-14 15:51 ` [PATCH v6 14/15] x86: Remove X86_XSTATE_SIZE and related constants John Baldwin
2023-08-28 20:38 ` Simon Marchi
2023-07-14 15:51 ` [PATCH v6 15/15] gdbserver: Simplify handling of ZMM registers John Baldwin
2023-08-28 20:57 ` Simon Marchi
2023-07-14 15:58 ` [PATCH v6 00/15] Handle variable XSAVE layouts John Baldwin
2023-07-26 8:31 ` Willgerodt, Felix
2023-07-25 17:17 ` Keith Seitz
2023-07-25 18:15 ` John Baldwin
2023-07-25 18:43 ` Keith Seitz [this message]
2023-07-25 18:59 ` John Baldwin
2023-07-25 20:42 ` Keith Seitz
2023-07-25 22:05 ` John Baldwin
2023-07-26 22:31 ` John Baldwin
2023-07-27 21:36 ` Keith Seitz
2023-07-28 16:35 ` John Baldwin
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