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[Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches
From: |
hjl.tools at gmail dot com |
Subject: |
[Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches |
Date: |
Wed, 07 Feb 2018 22:11:36 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=22791
--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Rafael Ávila de Espíndola from comment #16)
> > > If your argument is that you can always treat PC32 relocations on branches
> > > as if they were PLT32 relocations, why not just have the compiler emit
> > > PLT32
> > > relocations in the first place?
> >
> > Yes, this patch does that:
> >
> > https://sourceware.org/ml/binutils/2018-02/msg00074.html
>
> If I understand it correctly, the idea is to generate a R_X86_64_PLT32 for
> "call foo" but a R_86_64_PC32 for ".long foo - .". If that is indeed what
> the patch is doing, I love it :-)
Yes, that is what patch does. My current patch is at
https://github.com/hjl-tools/binutils-gdb/commit/80de23823c97db558436c9ad13d6728f43329706
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- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, (continued)
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, rafael.espindola at gmail dot com, 2018/02/05
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, ccoutant at gmail dot com, 2018/02/05
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, rafael.espindola at gmail dot com, 2018/02/05
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, ccoutant at gmail dot com, 2018/02/05
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, rafael.espindola at gmail dot com, 2018/02/05
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, hjl.tools at gmail dot com, 2018/02/06
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, ccoutant at gmail dot com, 2018/02/06
- [Bug gold/22791] Don't error when a -pie executable uses a shared function without PIC/PIE relocation, hjl.tools at gmail dot com, 2018/02/06
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, hjl.tools at gmail dot com, 2018/02/07
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, rafael.espindola at gmail dot com, 2018/02/07
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches,
hjl.tools at gmail dot com <=
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, cvs-commit at gcc dot gnu.org, 2018/02/13
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, hjl.tools at gmail dot com, 2018/02/13
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, rafael.espindola at gmail dot com, 2018/02/13
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, hjl.tools at gmail dot com, 2018/02/13
- [Bug gas/22791] PLT32 should be used for 32-bit PC-relative branches, rafael.espindola at gmail dot com, 2018/02/13