From: Simon Marchi <simon.marchi@ericsson.com>
To: Jan Beulich <JBeulich@suse.com>, GDB <gdb-patches@sourceware.org>
Cc: "Wiederhake, Tim" <tim.wiederhake@intel.com>
Subject: Re: [PATCH] x86-64: fix ZMM register state tracking
Date: Fri, 07 Sep 2018 23:13:00 -0000 [thread overview]
Message-ID: <369f9b84-77e3-3fa4-f363-a89ee503cff4@ericsson.com> (raw)
In-Reply-To: <5B8FD8B302000078001E5940@prv1-mh.provo.novell.com>
Hi Jan,
Would it be possible to update or create a test to exercise that?
arch-specific tests are in testsuite/gdb.arch.
I have some comments about the form. Tim, could you or somebody
else from Intel take a look at the functional side of the changes?
On 2018-09-05 02:22 PM, Jan Beulich wrote:
> The three AVX512 state components are entirely independent - one being
> in its "init state" has no implication whatsoever on either of the other
> two. Fully separate X86_XSTATE_ZMM_H and X86_XSTATE_ZMM handling, to
> prevent upper halves of the upper 16 ZMM registers to display as if they
> were zero (when they aren't) after e.g. VZEROALL/VZEROUPPER.
>
> gdb/
> 2018-09-05 Jan Beulich <jbeulich@suse.com>
>
> * i387-tdep.c (i387_supply_xsave): Split handling of
> X86_XSTATE_ZMM_H and X86_XSTATE_ZMM.
> (i387_collect_xsave): Likewise.
>
> --- a/gdb/i387-tdep.c
> +++ b/gdb/i387-tdep.c
> @@ -923,7 +923,8 @@ i387_supply_xsave (struct regcache *regc
> enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
> struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
> const gdb_byte *regs = (const gdb_byte *) xsave;
> - int i;
> + int i, zmm_endlo_regnum = I387_ZMM0H_REGNUM (tdep)
> + + std::min (tdep->num_zmm_regs, 16);
The GNU standard requires to parenthesis when breaking lines:
int i, zmm_endlo_regnum = (I387_ZMM0H_REGNUM (tdep)
+ std::min (tdep->num_zmm_regs, 16));
Simon
next prev parent reply other threads:[~2018-09-07 23:13 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 13:23 Jan Beulich
2018-09-07 23:13 ` Simon Marchi [this message]
2018-09-10 6:25 ` Jan Beulich
2018-09-10 13:01 ` Simon Marchi
2018-09-18 13:38 ` Jan Beulich
2018-09-25 3:29 ` Simon Marchi
2018-09-25 15:04 ` Jan Beulich
2018-10-02 19:20 ` Simon Marchi
2018-10-03 14:30 ` Jan Beulich
2018-10-03 14:41 ` Simon Marchi
2018-09-11 10:34 ` Pedro Alves
2018-09-11 11:34 ` Jan Beulich
2018-09-24 17:19 ` Metzger, Markus T
2018-09-25 7:47 ` Jan Beulich
2018-10-10 15:12 ` [PATCH v2] " Jan Beulich
2018-10-29 10:31 ` Ping: " Jan Beulich
2018-10-31 14:00 ` Simon Marchi
2018-11-07 9:07 ` Metzger, Markus T
2018-11-07 9:12 ` Jan Beulich
2018-11-07 13:18 ` Metzger, Markus T
2018-11-07 13:25 ` Jan Beulich
2018-11-07 14:18 ` Simon Marchi
2018-11-08 11:16 ` Jan Beulich
2018-11-08 16:24 ` Simon Marchi
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