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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-01-11 09:16:44 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-01-11 09:17:05 -0800 |
| commit | 9e65917652e994b0864b344bfa47014155d93100 (patch) | |
| tree | 2180a62221f443eede5958412d0978f98359ec2b /gold | |
| parent | 4ad2da7317c11fbf09e8feb9948b446d30ba9ec2 (diff) | |
| download | gdb-9e65917652e994b0864b344bfa47014155d93100.zip gdb-9e65917652e994b0864b344bfa47014155d93100.tar.gz gdb-9e65917652e994b0864b344bfa47014155d93100.tar.bz2 | |
x86-64: Correct unwind info for the BND PLT
Since the BND PLT has
230: 68 00 00 00 00 pushq $0x0
235: f2 e9 e5 ff ff ff bnd jmpq 220 <.plt>
23b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
instead of
230: ff 25 e2 0d 20 00 jmpq *0x200de2(%rip) # 201018
<func>
236: 68 00 00 00 00 pushq $0x0
23b: e9 e0 ff ff ff jmpq 220 <.plt>
its unwind info should be
DW_CFA_def_cfa_expression (DW_OP_breg7 (rsp): 8; DW_OP_breg16 (rip): 0;
DW_OP_lit15; DW_OP_and; DW_OP_lit5; DW_OP_ge; DW_OP_lit3; DW_OP_shl;
DW_OP_plus)
bfd/
PR ld/21038
* elf64-x86-64.c (elf_x86_64_eh_frame_bnd_plt): New.
(elf_x86_64_bnd_arch_bed): Use elf_x86_64_eh_frame_bnd_plt and
elf_x86_64_eh_frame_plt_got.
(elf_x86_64_size_dynamic_sections): Get unwind info from
elf_x86_64_bnd_arch_bed for the BND PLT.
ld/
PR ld/21038
* testsuite/ld-x86-64/pr21038a.d: New file.
* testsuite/ld-x86-64/pr21038a.s: Likewise.
* testsuite/ld-x86-64/pr21038b.d: Likewise.
* testsuite/ld-x86-64/pr21038b.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run pr21038a and pr21038b.
Diffstat (limited to 'gold')
0 files changed, 0 insertions, 0 deletions