From: Fangrui Song <maskray@google.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: libc-alpha@sourceware.org, "H.J. Lu" <hjl.tools@gmail.com>
Subject: Re: [PATCH 1/3] elf: Disable ifuncmain{1,5,5pic,5pie} when using LLD
Date: Fri, 29 Oct 2021 12:49:49 -0700 [thread overview]
Message-ID: <20211029194949.32ce7f2kr5g2aojs@google.com> (raw)
In-Reply-To: <20211026200346.3371750-2-adhemerval.zanella@linaro.org>
On 2021-10-26, Adhemerval Zanella wrote:
>These tests takes the address of a protected symbol (foo_protected)
>and lld does not support copy relocations on protected data symbols.
>
>Checked on x86_64-linux-gnu.
You may use some information from my previous reply
https://sourceware.org/pipermail/libc-alpha/2021-October/132292.html
to make a better commit message.
ifuncmain1.c and ifuncmain5.c take the address of the function `foo_protected`.
If compiled with -fno-pic, the produced relocation is R_X86_64_PC32.
Nowadays most GCC releases are configured with enable-default-pie and
therefore ifuncmain5.c is compiled with the implicit -fpie.
So I did not catch this issue.
Reviewed-by: Fangrui Song <maskray@google.com>
next prev parent reply other threads:[~2021-10-29 19:49 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 20:03 [PATCH 0/3] Improve lld support and current status Adhemerval Zanella
2021-10-26 20:03 ` [PATCH 1/3] elf: Disable ifuncmain{1,5,5pic,5pie} when using LLD Adhemerval Zanella
2021-10-29 19:49 ` Fangrui Song [this message]
2021-10-26 20:03 ` [PATCH 2/3] Fix LIBC_PROG_BINUTILS for -fuse-ld=lld Adhemerval Zanella
2021-10-26 20:48 ` Fangrui Song
2021-10-27 11:42 ` Adhemerval Zanella
2021-10-26 20:03 ` [PATCH 3/3] Check if linker also support -mtls-dialect=gnu2 Adhemerval Zanella
2021-10-27 2:04 ` Fāng-ruì Sòng
2021-10-29 0:56 ` Fāng-ruì Sòng
2021-10-26 20:33 ` [PATCH 0/3] Improve lld support and current status Fangrui Song
2021-10-27 13:11 ` Adhemerval Zanella
2021-10-28 1:06 ` Fangrui Song
2021-10-28 1:18 ` Fangrui Song
2021-10-28 17:40 ` Adhemerval Zanella
2021-10-28 11:48 ` Adhemerval Zanella
2021-10-27 22:39 ` Tulio Magno Quites Machado Filho
2021-10-27 22:50 ` Tulio Magno Quites Machado Filho
2021-11-05 7:23 ` lld status with powerpc64 Fangrui Song
2021-11-05 7:45 ` Fangrui Song
2021-11-05 13:58 ` Adhemerval Zanella
2021-11-05 19:32 ` Adhemerval Zanella
2021-11-05 19:38 ` H.J. Lu
2021-11-05 19:40 ` H.J. Lu
2021-11-05 19:50 ` Fāng-ruì Sòng
2021-11-07 14:24 ` Bill Schmidt
2021-11-08 11:37 ` Adhemerval Zanella
2021-11-08 13:26 ` Bill Schmidt
2021-11-08 13:54 ` Adhemerval Zanella
2021-11-08 13:59 ` Bill Schmidt
2021-11-08 14:11 ` Adhemerval Zanella
2021-11-08 14:12 ` Bill Schmidt
[not found] ` <OFD215FC7A.323066CE-ON00258787.0051DA95-00258787.00532945@ibm.com>
2021-11-08 22:38 ` Fangrui Song
2021-11-09 12:20 ` Adhemerval Zanella
2021-10-27 23:37 ` [PATCH 0/3] Improve lld support and current status Fangrui Song
2021-10-28 17:27 ` Tulio Magno Quites Machado Filho
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