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[Bug ld/14961] Dynamic IFUNC pointer to local function doesn't work for
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From: |
cvs-commit at gcc dot gnu.org |
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Subject: |
[Bug ld/14961] Dynamic IFUNC pointer to local function doesn't work for i386 |
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Date: |
Mon, 29 Aug 2016 15:16:00 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=14961
--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot
gnu.org> ---
The master branch has been updated by H.J. Lu <address@hidden>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=74437ea28fb611d4c88077b486fd7c0a8b4c2a25
commit 74437ea28fb611d4c88077b486fd7c0a8b4c2a25
Author: H.J. Lu <address@hidden>
Date: Mon Aug 29 08:12:59 2016 -0700
i386: Issue an error on non-PIC call to IFUNC in PIC object
On i386, IFUNC function must be called via PLT. Since PLT in PIC
object uses EBX register, R_386_PLT32 relocation must be used to
call IFUNC function even when IFUNC function is defined locally.
Linker should issue an error when R_386_PC32 relocation is used
to call IFUNC function.
Since PR ld/19784 tests doesn't use PLT relocation to local IFUNC
function, they are moved to the x86-64 test directory.
bfd/
PR ld/14961
PR ld/20515
* elf32-i386.c (elf_i386_check_relocs): Issue an error when
R_386_PC32 relocation is used to call IFUNC function in PIC
object.
ld/
PR ld/14961
PR ld/20515
* testsuite/ld-i386/i386.exp: Run pr20515.
* testsuite/ld-i386/pr20515.d: New file.
* testsuite/ld-i386/pr20515.s: Likewise.
* testsuite/ld-ifunc/ifunc-14a.s: Use R_386_PLT32 to call IFUNC
function.
* testsuite/ld-ifunc/ifunc-14c.s: Likewise.
* testsuite/ld-ifunc/ifunc-2-i386.s: Likewise.
* testsuite/ld-ifunc/ifunc-2-local-i386.s: Likewise.
* testsuite/ld-ifunc/ifunc.exp: Move PR ld/19784 tests to ...
* testsuite/ld-x86-64/x86-64.exp: Here.
* testsuite/ld-ifunc/pr19784a.c: Moved to ...
* testsuite/ld-x86-64/pr19784a.c: Here.
* testsuite/ld-ifunc/pr19784b.c: Moved to ...
* testsuite/ld-x86-64/pr19784b.c: Here.
* testsuite/ld-ifunc/pr19784c.c: Moved to ...
* testsuite/ld-x86-64/pr19784c.c: Here.
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