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| author | Alan Modra <amodra@gmail.com> | 2015-09-01 08:56:22 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2015-09-01 17:42:32 +0930 |
| commit | a4b6fadd50968ec6c1b687fe52b88bd11ff734b3 (patch) | |
| tree | 980406b43224c4a4b2eebd3071c30f84042343e8 /bfd/ChangeLog | |
| parent | 76b20b99f79c7352db31c31a504e86843bc5c882 (diff) | |
| download | gdb-a4b6fadd50968ec6c1b687fe52b88bd11ff734b3.zip gdb-a4b6fadd50968ec6c1b687fe52b88bd11ff734b3.tar.gz gdb-a4b6fadd50968ec6c1b687fe52b88bd11ff734b3.tar.bz2 | |
ppc64 out-of-line register save/restore functions
Don't emit long branch or plt branch stubs to save/restore functions.
Copy them instead. The problem is that plt branch stubs currently
trash r12, one of the parameters to some of the save/restore
functions, and there is no free register available to use instead of
r12.
6f20ed8a is prerequisite for this patch.
PR 18878
* elf64-ppc.c (ARRAY_SIZE): Define. Use throughout.
(enum ppc_stub_type): Add ppc_stub_save_res.
(struct map_stub): Add "next" and "needs_save_res".
(struct ppc_link_hash_entry): Add "save_res" flag.
(struct ppc_link_hash_table): Add "group".
(sfpr_define): Add stub_sec param. Define symbol in stub_sec if
stub_sec is non-null. Set "save_res".
(save_res_funcs): Make file scope, rename from funcs. Adjust uses.
(ppc64_elf_adjust_dynamic_symbol): Prohibit plt call to save_res syms.
(ppc_build_one_stub): Handle ppc_stub_save_res.
(ppc_size_one_stub): Set stub type to ppc_size_one_stub on finding
stub for linker defined save_res sym.
(group_sections): Init new fields of struct map_stub.
(ppc64_elf_size_stubs): Reserve space for save/restore func copy.
(ppc64_elf_build_stubs): Copy save/restore funcs to groups. Emit
alias syms too.
(ppc64_elf_relocate_section): Set destination for ppc_stub_save_res.
Diffstat (limited to 'bfd/ChangeLog')
| -rw-r--r-- | bfd/ChangeLog | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 5742aa3..e2819fe 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,24 @@ +2015-09-01 Alan Modra <amodra@gmail.com> + + PR 18878 + * elf64-ppc.c (ARRAY_SIZE): Define. Use throughout. + (enum ppc_stub_type): Add ppc_stub_save_res. + (struct map_stub): Add "next" and "needs_save_res". + (struct ppc_link_hash_entry): Add "save_res" flag. + (struct ppc_link_hash_table): Add "group". + (sfpr_define): Add stub_sec param. Define symbol in stub_sec if + stub_sec is non-null. Set "save_res". + (save_res_funcs): Make file scope, rename from funcs. Adjust uses. + (ppc64_elf_adjust_dynamic_symbol): Prohibit plt call to save_res syms. + (ppc_build_one_stub): Handle ppc_stub_save_res. + (ppc_size_one_stub): Set stub type to ppc_size_one_stub on finding + stub for linker defined save_res sym. + (group_sections): Init new fields of struct map_stub. + (ppc64_elf_size_stubs): Reserve space for save/restore func copy. + (ppc64_elf_build_stubs): Copy save/restore funcs to groups. Emit + alias syms too. + (ppc64_elf_relocate_section): Set destination for ppc_stub_save_res. + 2015-08-31 Alan Modra <amodra@gmail.com> * elf64-ppc.c (get_r2off): Return -1 on error. |