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| author | Alan Modra <amodra@gmail.com> | 2020-09-26 15:10:09 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-09-26 19:03:02 +0930 |
| commit | 3cd7c7d7ef38ec5dc0a0c137c47d9ad0fc9e2e5f (patch) | |
| tree | 1b9ed3050e4eb9b5338592f702929c91e44be19e /ld/ChangeLog-2012 | |
| parent | 0be2fe677c53c6d363a40ae3612d4490ba377e02 (diff) | |
| download | gdb-3cd7c7d7ef38ec5dc0a0c137c47d9ad0fc9e2e5f.zip gdb-3cd7c7d7ef38ec5dc0a0c137c47d9ad0fc9e2e5f.tar.gz gdb-3cd7c7d7ef38ec5dc0a0c137c47d9ad0fc9e2e5f.tar.bz2 | |
PPC64_OPT_LOCALENTRY is incompatible with tail calls
The save of r2 in __glink_PLTresolve is the culprit. Remove it,
unless we know we need it for --plt-localentry. --plt-localentry
should not be used with power10 pc-relative code that makes tail
calls.
The patch also removes use of r2 as a scratch reg in the ELFv2
__glink_PLTresolve. Using r2 isn't a problem, this is just reducing
the number of scratch regs.
bfd/
* elf64-ppc.c (GLINK_PLTRESOLVE_SIZE): Depend on has_plt_localentry0.
(LD_R0_0R11, ADD_R11_R0_R11): Define.
(ppc64_elf_tls_setup): Disable params->plt_localentry0 when power10
code detected.
(ppc64_elf_size_stubs): Update __glink_PLTresolve eh_frame.
(ppc64_elf_build_stubs): Move r2 save to start of __glink_PLTresolve,
and only emit for has_plt_localentry0. Don't use r2 in the stub.
ld/
* testsuite/ld-powerpc/elfv2so.d,
* testsuite/ld-powerpc/notoc2.d,
* testsuite/ld-powerpc/tlsdesc.wf,
* testsuite/ld-powerpc/tlsdesc2.d,
* testsuite/ld-powerpc/tlsdesc2.wf,
* testsuite/ld-powerpc/tlsopt5.d,
* testsuite/ld-powerpc/tlsopt5.wf,
* testsuite/ld-powerpc/tlsopt6.d,
* testsuite/ld-powerpc/tlsopt6.wf: Update __glink_PLTresolve.
Diffstat (limited to 'ld/ChangeLog-2012')
0 files changed, 0 insertions, 0 deletions