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| author | H.J. Lu <hjl.tools@gmail.com> | 2014-12-13 23:37:22 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2014-12-13 23:39:56 -0800 |
| commit | bc696fd5af08fa199750abfca092894ab54206c7 (patch) | |
| tree | 9e6e0d2996eea892e68cebda85f2148706a68a0c /ld/testsuite/ld-x86-64/pr17689b.S | |
| parent | 94ec908766bbe8c146798754261bcce83572b00f (diff) | |
| download | gdb-bc696fd5af08fa199750abfca092894ab54206c7.zip gdb-bc696fd5af08fa199750abfca092894ab54206c7.tar.gz gdb-bc696fd5af08fa199750abfca092894ab54206c7.tar.bz2 | |
Handle weak alias for PIE with copy reloc
When there is a weak symbol with a real definition, the processor
independent code will have arranged for us to see the real definition
first. We need to copy the needs_copy bit from the real definition and
check it when allowing copy reloc in PIE.
bfd/
PR ld/17689
* elf64-x86-64.c (elf_x86_64_link_hash_entry): Add needs_copy.
Change has_bnd_reloc to bit field.
(elf_x86_64_link_hash_newfunc): Initialize needs_copy and
has_bnd_reloc to 0.
(elf_x86_64_check_relocs): Set has_bnd_reloc to 1 instead
of TRUE.
(elf_x86_64_adjust_dynamic_symbol): Copy needs_copy from the
real definition to a weak symbol.
(elf_x86_64_allocate_dynrelocs): Also check needs_copy of a
weak symbol for PIE when discarding space for relocs against
symbols which turn out to need copy relocs.
(elf_x86_64_relocate_section): Also check needs_copy of a
weak symbol for PIE with copy reloc.
ld/testsuite/
PR ld/17689
* ld-x86-64/pr17689.out: New file.
* ld-x86-64/pr17689.rd: Likewise.
* ld-x86-64/pr17689a.c: Likewise.
* ld-x86-64/pr17689b.S: Likewise.
* ld-x86-64/x86-64.exp: Run PR ld/17689 tests.
Diffstat (limited to 'ld/testsuite/ld-x86-64/pr17689b.S')
| -rw-r--r-- | ld/testsuite/ld-x86-64/pr17689b.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ld/testsuite/ld-x86-64/pr17689b.S b/ld/testsuite/ld-x86-64/pr17689b.S new file mode 100644 index 0000000..c95f891 --- /dev/null +++ b/ld/testsuite/ld-x86-64/pr17689b.S @@ -0,0 +1,12 @@ + .text + .globl main + .type main, @function +main: + subq $8, %rsp + movq bar_alias(%rip), %rdi + call foo@PLT + xorl %eax, %eax + addq $8, %rsp + ret + .size main, .-main + .section .note.GNU-stack,"",@progbits |