From: "Frager, Neal" <neal.frager@amd.com>
To: Michael Eager <eager@eagercon.com>, Jan Beulich <jbeulich@suse.com>
Cc: "Erkiaga Elorza, Ibai" <ibai.erkiaga-elorza@amd.com>,
"Mekala, Nagaraju" <nagaraju.mekala@amd.com>,
"Hatle, Mark" <mark.hatle@amd.com>,
"Mutyala, Sadanand" <sadanand.mutyala@amd.com>,
"Nali, Appa Rao" <appa.rao.nali@amd.com>,
"Hunsigida, Vidhumouli" <vidhumouli.hunsigida@amd.com>,
"luca.ceresoli@bootlin.com" <luca.ceresoli@bootlin.com>,
"binutils@sourceware.org" <binutils@sourceware.org>
Subject: RE: [PATCH v1 1/1] gas: expr: fix support .long 0U and .long 0u
Date: Sun, 1 Oct 2023 16:22:12 +0000 [thread overview]
Message-ID: <CH2PR12MB500486E747FD95AC4EC6B796F0C6A@CH2PR12MB5004.namprd12.prod.outlook.com> (raw)
In-Reply-To: <1eb5429b-94dc-e394-14f3-9063f19125eb@eagercon.com>
>> Fix support for .long 0U and .long 0u in GCC.
>>
>> This patch has been tested for years of AMD Xilinx Yocto releases as
>> part of the following patch set:
>>
>> https://github.com/Xilinx/meta-xilinx/tree/master/meta-microblaze/rec
>> ipes-devtools/binutils/binutils
>>
>> Signed-off-by: Neal Frager <neal.frager@amd.com>
>> ---
>> gas/expr.c | 9 +++++++++
>> 1 file changed, 9 insertions(+)
>
> Without a testcase demonstrating what's wrong, I'd almost be inclined
> to say that ...
>
>> --- a/gas/expr.c
>> +++ b/gas/expr.c
>> @@ -824,6 +824,15 @@ operand (expressionS *expressionP, enum expr_mode mode)
>> break;
>> }
>> }
>> + if ((*input_line_pointer == 'U') || (*input_line_pointer == 'u'))
>> + {
>> + input_line_pointer--;
>> +
>> + integer_constant ((NUMBERS_WITH_SUFFIX || flag_m68k_mri)
>> + ? 0 : 10,
>> + expressionP);
>> + break;
>> + }
>> c = *input_line_pointer;
>> switch (c)
>> {
>
> ... this ought to be covered by logic in integer_constant() already.
> But I think I see what the issue is. Nevertheless, go look for
> tc_allow_U_suffix, which wants using here as well. Further I think the
> same issue then exists for L/l suffixes?
>
> Plus I think you want to add the new code to the switch() statement
> rather than immediately ahead of it.
>
> Jan
>
Hi Michael, Jan,
> Neal --
> Can you provide a test case for this patch? I'm not able to reproduce any error.
>Please take a look at gas/expr.c:541-543 (PR 19910: Look for, and ignore, a U suffix to the number). Is this a fix for the same issue?
> https://sourceware.org/bugzilla/show_bug.cgi?id=19910
>As Jan says, it looks like this code, if needed, should be in the switch
> statement.
Thank you for your review.
I would just like to clarify where this patch is coming from.
I am not actually the author of the patches I am submitting.
When we provide a Microblaze toolchain with PetaLinux, Yocto or Vitis, we are actually applying all of the following patches to the binutils portion of the toolchain:
https://github.com/Xilinx/meta-xilinx/tree/master/meta-microblaze/recipes-devtools/binutils/binutils
Instead of continuing to carry the maintenance of this patch set with all of our releases, I would like to get as many of these patches upstreamed as possible.
This particular patch is coming from here:
https://github.com/Xilinx/meta-xilinx/blob/master/meta-microblaze/recipes-devtools/binutils/binutils/0009-Patch-Microblaze-fixed-bug-in-GCC-so-that-It-will-su.patch
It is possible that this patch is not required anymore. I will check internally at AMD Xilinx to see if I can identify a way to reproduce the error that this patch is solving.
Until I can prove that this patch is still needed, let's skip it. If it is really no longer necessary, I will try to get it removed from our list of patches.
Thanks for your help!
Best regards,
Neal Frager
AMD
next prev parent reply other threads:[~2023-10-01 16:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-27 13:21 Neal Frager
2023-09-27 13:33 ` Jan Beulich
2023-09-28 19:27 ` Michael Eager
2023-10-01 16:22 ` Frager, Neal [this message]
2023-10-01 16:34 ` Michael Eager
2023-10-01 18:06 ` Frager, Neal
2023-10-16 9:18 ` Jan Beulich
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