* elflink.c (_bfd_elf_create_dynamic_sections): Don't set SEC_CODE
when plt_not_loaded.
* elf64-ppc.c (ppc64_elf_create_dynamic_sections): No need to
clear .plt SEC_CODE here. Create .stub and correct .glink flags.
(PLT_INITIAL_ENTRY_SIZE): Set to 24.
(ppc64_elf_glink_code): Delete.
(PPC64_ELF_GLINK_SIZE): Delete.
(ADDIS_R12_R2, STD_R2_40R1, LD_R11_0R12, LD_R2_0R12, MTCTR_R11,
BCTR, ADDIS_R12_R12_1, LD_R2_40R1, NOP, LI_R0_0, B_DOT, LIS_R0_0,
ORI_R0_R0_0): Define.
(PLT_CALL_STUB_SIZE, GLINK_CALL_STUB_SIZE): Define.
(struct ppc_link_hash_table): Add sstub and plt_overflow.
(ppc64_elf_link_hash_table_create): Init them.
(ppc64_elf_check_relocs <R_PPC64_REL24>): Refcount .plt entry.
Don't copy to shared lib.
(ppc64_elf_check_relocs): Call bfd_set_error on errors.
(ppc64_elf_gc_sweep_hook <R_PPC64_REL24>): Sweep plt refcount.
(allocate_dynrelocs <plt>): Don't change function sym here. Make
room for .stub and .glink code.
(ppc64_elf_size_dynamic_sections): Handle .stub. Make entry for
DT_PPC64_GLINK.
(ppc64_elf_final_link): Rename to ppc64_elf_set_toc. Don't call
bfd_elf64_bfd_final_link.
(bfd_elf64_bfd_final_link): Don't define.
(ppc64_elf_size_stubs): New.
(build_plt_stub): New.
(build_one_stub): New.
(ppc64_elf_build_stubs): New.
(ppc64_elf_relocate_section <toc relocs>): Remove assert.
(ppc64_elf_relocate_section): Don't copy R_PPC64_REL24 relocs.
(ppc64_elf_finish_dynamic_symbol): Don't build stubs here. Set
DT_PPC64_GLINK entry. Tweak DT_PLTGOT, DT_JMPREL, DT_PLTRELSZ in
case output sections not separate. Adjust DT_RELASZ to not
include plt relocs. Set reserved got entry. Set got and plt
entry size.
(elf_backend_got_header_size): Set to 8.
* elf64-ppc.h: New file.
2002-01-16 13:50:03 +08:00
|
|
|
/* PowerPC64-specific support for 64-bit ELF.
|
2020-01-01 15:57:01 +08:00
|
|
|
Copyright (C) 2002-2020 Free Software Foundation, Inc.
|
* elflink.c (_bfd_elf_create_dynamic_sections): Don't set SEC_CODE
when plt_not_loaded.
* elf64-ppc.c (ppc64_elf_create_dynamic_sections): No need to
clear .plt SEC_CODE here. Create .stub and correct .glink flags.
(PLT_INITIAL_ENTRY_SIZE): Set to 24.
(ppc64_elf_glink_code): Delete.
(PPC64_ELF_GLINK_SIZE): Delete.
(ADDIS_R12_R2, STD_R2_40R1, LD_R11_0R12, LD_R2_0R12, MTCTR_R11,
BCTR, ADDIS_R12_R12_1, LD_R2_40R1, NOP, LI_R0_0, B_DOT, LIS_R0_0,
ORI_R0_R0_0): Define.
(PLT_CALL_STUB_SIZE, GLINK_CALL_STUB_SIZE): Define.
(struct ppc_link_hash_table): Add sstub and plt_overflow.
(ppc64_elf_link_hash_table_create): Init them.
(ppc64_elf_check_relocs <R_PPC64_REL24>): Refcount .plt entry.
Don't copy to shared lib.
(ppc64_elf_check_relocs): Call bfd_set_error on errors.
(ppc64_elf_gc_sweep_hook <R_PPC64_REL24>): Sweep plt refcount.
(allocate_dynrelocs <plt>): Don't change function sym here. Make
room for .stub and .glink code.
(ppc64_elf_size_dynamic_sections): Handle .stub. Make entry for
DT_PPC64_GLINK.
(ppc64_elf_final_link): Rename to ppc64_elf_set_toc. Don't call
bfd_elf64_bfd_final_link.
(bfd_elf64_bfd_final_link): Don't define.
(ppc64_elf_size_stubs): New.
(build_plt_stub): New.
(build_one_stub): New.
(ppc64_elf_build_stubs): New.
(ppc64_elf_relocate_section <toc relocs>): Remove assert.
(ppc64_elf_relocate_section): Don't copy R_PPC64_REL24 relocs.
(ppc64_elf_finish_dynamic_symbol): Don't build stubs here. Set
DT_PPC64_GLINK entry. Tweak DT_PLTGOT, DT_JMPREL, DT_PLTRELSZ in
case output sections not separate. Adjust DT_RELASZ to not
include plt relocs. Set reserved got entry. Set got and plt
entry size.
(elf_backend_got_header_size): Set to 8.
* elf64-ppc.h: New file.
2002-01-16 13:50:03 +08:00
|
|
|
|
2007-07-03 22:26:43 +08:00
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
* elflink.c (_bfd_elf_create_dynamic_sections): Don't set SEC_CODE
when plt_not_loaded.
* elf64-ppc.c (ppc64_elf_create_dynamic_sections): No need to
clear .plt SEC_CODE here. Create .stub and correct .glink flags.
(PLT_INITIAL_ENTRY_SIZE): Set to 24.
(ppc64_elf_glink_code): Delete.
(PPC64_ELF_GLINK_SIZE): Delete.
(ADDIS_R12_R2, STD_R2_40R1, LD_R11_0R12, LD_R2_0R12, MTCTR_R11,
BCTR, ADDIS_R12_R12_1, LD_R2_40R1, NOP, LI_R0_0, B_DOT, LIS_R0_0,
ORI_R0_R0_0): Define.
(PLT_CALL_STUB_SIZE, GLINK_CALL_STUB_SIZE): Define.
(struct ppc_link_hash_table): Add sstub and plt_overflow.
(ppc64_elf_link_hash_table_create): Init them.
(ppc64_elf_check_relocs <R_PPC64_REL24>): Refcount .plt entry.
Don't copy to shared lib.
(ppc64_elf_check_relocs): Call bfd_set_error on errors.
(ppc64_elf_gc_sweep_hook <R_PPC64_REL24>): Sweep plt refcount.
(allocate_dynrelocs <plt>): Don't change function sym here. Make
room for .stub and .glink code.
(ppc64_elf_size_dynamic_sections): Handle .stub. Make entry for
DT_PPC64_GLINK.
(ppc64_elf_final_link): Rename to ppc64_elf_set_toc. Don't call
bfd_elf64_bfd_final_link.
(bfd_elf64_bfd_final_link): Don't define.
(ppc64_elf_size_stubs): New.
(build_plt_stub): New.
(build_one_stub): New.
(ppc64_elf_build_stubs): New.
(ppc64_elf_relocate_section <toc relocs>): Remove assert.
(ppc64_elf_relocate_section): Don't copy R_PPC64_REL24 relocs.
(ppc64_elf_finish_dynamic_symbol): Don't build stubs here. Set
DT_PPC64_GLINK entry. Tweak DT_PLTGOT, DT_JMPREL, DT_PLTRELSZ in
case output sections not separate. Adjust DT_RELASZ to not
include plt relocs. Set reserved got entry. Set got and plt
entry size.
(elf_backend_got_header_size): Set to 8.
* elf64-ppc.h: New file.
2002-01-16 13:50:03 +08:00
|
|
|
|
2007-07-03 22:26:43 +08:00
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
|
|
|
(at your option) any later version.
|
* elflink.c (_bfd_elf_create_dynamic_sections): Don't set SEC_CODE
when plt_not_loaded.
* elf64-ppc.c (ppc64_elf_create_dynamic_sections): No need to
clear .plt SEC_CODE here. Create .stub and correct .glink flags.
(PLT_INITIAL_ENTRY_SIZE): Set to 24.
(ppc64_elf_glink_code): Delete.
(PPC64_ELF_GLINK_SIZE): Delete.
(ADDIS_R12_R2, STD_R2_40R1, LD_R11_0R12, LD_R2_0R12, MTCTR_R11,
BCTR, ADDIS_R12_R12_1, LD_R2_40R1, NOP, LI_R0_0, B_DOT, LIS_R0_0,
ORI_R0_R0_0): Define.
(PLT_CALL_STUB_SIZE, GLINK_CALL_STUB_SIZE): Define.
(struct ppc_link_hash_table): Add sstub and plt_overflow.
(ppc64_elf_link_hash_table_create): Init them.
(ppc64_elf_check_relocs <R_PPC64_REL24>): Refcount .plt entry.
Don't copy to shared lib.
(ppc64_elf_check_relocs): Call bfd_set_error on errors.
(ppc64_elf_gc_sweep_hook <R_PPC64_REL24>): Sweep plt refcount.
(allocate_dynrelocs <plt>): Don't change function sym here. Make
room for .stub and .glink code.
(ppc64_elf_size_dynamic_sections): Handle .stub. Make entry for
DT_PPC64_GLINK.
(ppc64_elf_final_link): Rename to ppc64_elf_set_toc. Don't call
bfd_elf64_bfd_final_link.
(bfd_elf64_bfd_final_link): Don't define.
(ppc64_elf_size_stubs): New.
(build_plt_stub): New.
(build_one_stub): New.
(ppc64_elf_build_stubs): New.
(ppc64_elf_relocate_section <toc relocs>): Remove assert.
(ppc64_elf_relocate_section): Don't copy R_PPC64_REL24 relocs.
(ppc64_elf_finish_dynamic_symbol): Don't build stubs here. Set
DT_PPC64_GLINK entry. Tweak DT_PLTGOT, DT_JMPREL, DT_PLTRELSZ in
case output sections not separate. Adjust DT_RELASZ to not
include plt relocs. Set reserved got entry. Set got and plt
entry size.
(elf_backend_got_header_size): Set to 8.
* elf64-ppc.h: New file.
2002-01-16 13:50:03 +08:00
|
|
|
|
2007-07-03 22:26:43 +08:00
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
GNU General Public License for more details.
|
* elflink.c (_bfd_elf_create_dynamic_sections): Don't set SEC_CODE
when plt_not_loaded.
* elf64-ppc.c (ppc64_elf_create_dynamic_sections): No need to
clear .plt SEC_CODE here. Create .stub and correct .glink flags.
(PLT_INITIAL_ENTRY_SIZE): Set to 24.
(ppc64_elf_glink_code): Delete.
(PPC64_ELF_GLINK_SIZE): Delete.
(ADDIS_R12_R2, STD_R2_40R1, LD_R11_0R12, LD_R2_0R12, MTCTR_R11,
BCTR, ADDIS_R12_R12_1, LD_R2_40R1, NOP, LI_R0_0, B_DOT, LIS_R0_0,
ORI_R0_R0_0): Define.
(PLT_CALL_STUB_SIZE, GLINK_CALL_STUB_SIZE): Define.
(struct ppc_link_hash_table): Add sstub and plt_overflow.
(ppc64_elf_link_hash_table_create): Init them.
(ppc64_elf_check_relocs <R_PPC64_REL24>): Refcount .plt entry.
Don't copy to shared lib.
(ppc64_elf_check_relocs): Call bfd_set_error on errors.
(ppc64_elf_gc_sweep_hook <R_PPC64_REL24>): Sweep plt refcount.
(allocate_dynrelocs <plt>): Don't change function sym here. Make
room for .stub and .glink code.
(ppc64_elf_size_dynamic_sections): Handle .stub. Make entry for
DT_PPC64_GLINK.
(ppc64_elf_final_link): Rename to ppc64_elf_set_toc. Don't call
bfd_elf64_bfd_final_link.
(bfd_elf64_bfd_final_link): Don't define.
(ppc64_elf_size_stubs): New.
(build_plt_stub): New.
(build_one_stub): New.
(ppc64_elf_build_stubs): New.
(ppc64_elf_relocate_section <toc relocs>): Remove assert.
(ppc64_elf_relocate_section): Don't copy R_PPC64_REL24 relocs.
(ppc64_elf_finish_dynamic_symbol): Don't build stubs here. Set
DT_PPC64_GLINK entry. Tweak DT_PLTGOT, DT_JMPREL, DT_PLTRELSZ in
case output sections not separate. Adjust DT_RELASZ to not
include plt relocs. Set reserved got entry. Set got and plt
entry size.
(elf_backend_got_header_size): Set to 8.
* elf64-ppc.h: New file.
2002-01-16 13:50:03 +08:00
|
|
|
|
2007-07-03 22:26:43 +08:00
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
|
along with this program; if not, write to the Free Software
|
|
|
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
|
|
|
MA 02110-1301, USA. */
|
* elflink.c (_bfd_elf_create_dynamic_sections): Don't set SEC_CODE
when plt_not_loaded.
* elf64-ppc.c (ppc64_elf_create_dynamic_sections): No need to
clear .plt SEC_CODE here. Create .stub and correct .glink flags.
(PLT_INITIAL_ENTRY_SIZE): Set to 24.
(ppc64_elf_glink_code): Delete.
(PPC64_ELF_GLINK_SIZE): Delete.
(ADDIS_R12_R2, STD_R2_40R1, LD_R11_0R12, LD_R2_0R12, MTCTR_R11,
BCTR, ADDIS_R12_R12_1, LD_R2_40R1, NOP, LI_R0_0, B_DOT, LIS_R0_0,
ORI_R0_R0_0): Define.
(PLT_CALL_STUB_SIZE, GLINK_CALL_STUB_SIZE): Define.
(struct ppc_link_hash_table): Add sstub and plt_overflow.
(ppc64_elf_link_hash_table_create): Init them.
(ppc64_elf_check_relocs <R_PPC64_REL24>): Refcount .plt entry.
Don't copy to shared lib.
(ppc64_elf_check_relocs): Call bfd_set_error on errors.
(ppc64_elf_gc_sweep_hook <R_PPC64_REL24>): Sweep plt refcount.
(allocate_dynrelocs <plt>): Don't change function sym here. Make
room for .stub and .glink code.
(ppc64_elf_size_dynamic_sections): Handle .stub. Make entry for
DT_PPC64_GLINK.
(ppc64_elf_final_link): Rename to ppc64_elf_set_toc. Don't call
bfd_elf64_bfd_final_link.
(bfd_elf64_bfd_final_link): Don't define.
(ppc64_elf_size_stubs): New.
(build_plt_stub): New.
(build_one_stub): New.
(ppc64_elf_build_stubs): New.
(ppc64_elf_relocate_section <toc relocs>): Remove assert.
(ppc64_elf_relocate_section): Don't copy R_PPC64_REL24 relocs.
(ppc64_elf_finish_dynamic_symbol): Don't build stubs here. Set
DT_PPC64_GLINK entry. Tweak DT_PLTGOT, DT_JMPREL, DT_PLTRELSZ in
case output sections not separate. Adjust DT_RELASZ to not
include plt relocs. Set reserved got entry. Set got and plt
entry size.
(elf_backend_got_header_size): Set to 8.
* elf64-ppc.h: New file.
2002-01-16 13:50:03 +08:00
|
|
|
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
/* Used to pass info between ld and bfd. */
|
|
|
|
|
struct ppc64_elf_params
|
|
|
|
|
{
|
|
|
|
|
/* Linker stub bfd. */
|
|
|
|
|
bfd *stub_bfd;
|
|
|
|
|
|
|
|
|
|
/* Linker call-backs. */
|
|
|
|
|
asection * (*add_stub_section) (const char *, asection *);
|
|
|
|
|
void (*layout_sections_again) (void);
|
|
|
|
|
|
|
|
|
|
/* Maximum size of a group of input sections that can be handled by
|
|
|
|
|
one stub section. A value of +/-1 indicates the bfd back-end
|
|
|
|
|
should use a suitable default size. */
|
|
|
|
|
bfd_signed_vma group_size;
|
|
|
|
|
|
|
|
|
|
/* Whether to use a special call stub for __tls_get_addr. */
|
2015-09-18 14:47:49 +08:00
|
|
|
int tls_get_addr_opt;
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
|
PowerPC64 __tls_get_addr_desc
This implements register saving and restoring in the __tls_get_addr
call stub, so that when glibc supports the optimized tls call stub gcc
can generate code that assumes only r0, r12 and of course r3 are
changed on a __tls_get_addr call. When gcc expects __tls_get_addr
calls to preserve registers the call will be to __tls_get_addr_desc,
which will be translated by the linker to a call to __tls_get_addr_opt.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Add no_tls_get_addr_regsave.
* elf64-ppc.c (struct ppc_link_hash_table): Add tga_desc and
tga_desc_fd.
(is_tls_get_addr): Match tga_desc and tga_desc_df too.
(STDU_R1_0R1, ADDI_R1_R1): Define.
(tls_get_addr_prologue, tls_get_addr_epilogue): New functions.
(ppc64_elf_tls_setup): Set up tga_desc and tga_desc_fd. Indirect
tga_desc_fd to opt_fd, and tga_desc to opt. Set
no_tls_get_addr_regsave.
(branch_reloc_hash_match): Add hash3 and hash4.
(ppc64_elf_tls_optimize): Handle tga_desc_fd and tga_desc too.
(ppc64_elf_size_dynamic_sections): Likewise.
(ppc64_elf_relocate_section): Likewise.
(plt_stub_size, build_plt_stub): Likewise. Size regsave
__tls_get_addr stub.
(build_tls_get_addr_stub): Build regsave __tls_get_addr stub and
eh_frame.
(ppc_size_one_stub): Handle tga_desc_fd and tga_desc too. Size
eh_frame for regsave __tls_get_addr.
gas/
* config/tc-ppc.c (parse_tls_arg): Handle tls arg for
__tls_get_addr_desc and __tls_get_addr_opt.
ld/
* emultempl/ppc64elf.em (ppc64_opt, PARSE_AND_LIST_LONGOPTS),
(PARSE_AND_LIST_OPTIONS, PARSE_AND_LIST_ARGS_CASES): Support
--tls-get-addr-regsave and --no-tls-get-addr-regsave.
(params): Init new field.
* ld.texi (--tls-get-addr-regsave, --no-tls-get-addr-regsave):
Document.
* testsuite/ld-powerpc/tlsdesc.s,
* testsuite/ld-powerpc/tlsdesc.d,
* testsuite/ld-powerpc/tlsdesc.wf,
* testsuite/ld-powerpc/tlsdesc2.d,
* testsuite/ld-powerpc/tlsdesc2.wf,
* testsuite/ld-powerpc/tlsexenors.d,
* testsuite/ld-powerpc/tlsexenors.r,
* testsuite/ld-powerpc/tlsexers.d,
* testsuite/ld-powerpc/tlsexers.r,
* testsuite/ld-powerpc/tlsexetocnors.d,
* testsuite/ld-powerpc/tlsexetocrs.d,
* testsuite/ld-powerpc/tlsexetocrs.r,
* testsuite/ld-powerpc/tlsopt6.d,
* testsuite/ld-powerpc/tlsopt6.wf: New.
* testsuite/ld-powerpc/powerpc.exp: Run new tests.
2020-01-20 10:08:00 +08:00
|
|
|
/* Whether the special call stub should save r4..r12. */
|
|
|
|
|
int no_tls_get_addr_regsave;
|
|
|
|
|
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
/* Whether to allow multiple toc sections. */
|
|
|
|
|
int no_multi_toc;
|
|
|
|
|
|
|
|
|
|
/* Set if PLT call stubs should load r11. */
|
|
|
|
|
int plt_static_chain;
|
|
|
|
|
|
|
|
|
|
/* Set if PLT call stubs need to be thread safe on power7+. */
|
|
|
|
|
int plt_thread_safe;
|
|
|
|
|
|
|
|
|
|
/* Set if individual PLT call stubs should be aligned. */
|
|
|
|
|
int plt_stub_align;
|
|
|
|
|
|
PPC64_OPT_LOCALENTRY
ELFv2 functions with localentry:0 are those with a single entry point,
ie. global entry == local entry, and that have no requirement on r2 or
r12, and guarantee r2 is unchanged on return. Such an external
function can be called via the PLT without saving r2 or restoring it
on return, avoiding a common load-hit-store for small functions. The
optimization is attractive. The TOC pointer load-hit-store is a major
reason why calls to small functions that need no register saves, or
with shrink-wrap, no register saves on a fast path, are slow on
powerpc64le.
To be safe, this optimization needs ld.so support to check that the
run-time matches link-time function implementation. If a function
in a shared library with st_other localentry non-zero is called
without saving and restoring r2, r2 will be trashed on return, leading
to segfaults. For that reason the optimization does not happen for
weak functions since a weak definition is a fairly solid hint that the
function will likely be overridden. I'm also not enabling the
optimization by default unless glibc-2.26 is detected, which should
have the ld.so checks implemented.
bfd/
* elf64-ppc.c (struct ppc_link_hash_table): Add has_plt_localentry0.
(ppc64_elf_merge_symbol_attribute): Merge localentry bits from
dynamic objects.
(is_elfv2_localentry0): New function.
(ppc64_elf_tls_setup): Default params->plt_localentry0.
(plt_stub_size): Adjust size for tls_get_addr_opt stub.
(build_tls_get_addr_stub): Use a simpler stub when r2 is not saved.
(ppc64_elf_size_stubs): Leave stub_type as ppc_stub_plt_call for
optimized localentry:0 stubs.
(ppc64_elf_build_stubs): Save r2 in ELFv2 __glink_PLTresolve.
(ppc64_elf_relocate_section): Leave nop unchanged for optimized
localentry:0 stubs.
(ppc64_elf_finish_dynamic_sections): Set PPC64_OPT_LOCALENTRY in
DT_PPC64_OPT.
* elf64-ppc.h (struct ppc64_elf_params): Add plt_localentry0.
include/
* elf/ppc64.h (PPC64_OPT_LOCALENTRY): Define.
ld/
* emultempl/ppc64elf.em (params): Init plt_localentry0 field.
(enum ppc64_opt): New, replacing OPTION_* defines. Add
OPTION_PLT_LOCALENTRY, and OPTION_NO_PLT_LOCALENTRY.
(PARSE_AND_LIST_*): Support --plt-localentry and --no-plt-localentry.
* testsuite/ld-powerpc/elfv2so.d: Update.
* testsuite/ld-powerpc/powerpc.exp (TLS opt 5): Use --no-plt-localentry.
* testsuite/ld-powerpc/tlsopt5.d: Update.
2017-05-26 08:32:29 +08:00
|
|
|
/* Set if PLT call stubs for localentry:0 functions should omit r2 save. */
|
|
|
|
|
int plt_localentry0;
|
|
|
|
|
|
2020-07-10 09:18:45 +08:00
|
|
|
/* Whether to use power10 instructions in linkage stubs. */
|
|
|
|
|
int power10_stubs;
|
|
|
|
|
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
/* Whether to canonicalize .opd so that there are no overlapping
|
|
|
|
|
.opd entries. */
|
|
|
|
|
int non_overlapping_opd;
|
|
|
|
|
|
|
|
|
|
/* Whether to emit symbols for stubs. */
|
|
|
|
|
int emit_stub_syms;
|
2014-02-19 11:53:12 +08:00
|
|
|
|
|
|
|
|
/* Whether to generate out-of-line register save/restore for gcc -Os code. */
|
|
|
|
|
int save_restore_funcs;
|
2015-01-27 21:10:05 +08:00
|
|
|
|
|
|
|
|
/* Set when a potential variable is detected in .toc. */
|
|
|
|
|
int object_in_toc;
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
};
|
|
|
|
|
|
2013-04-22 11:11:40 +08:00
|
|
|
bfd_boolean ppc64_elf_init_stub_bfd
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
(struct bfd_link_info *, struct ppc64_elf_params *);
|
2002-11-30 16:39:46 +08:00
|
|
|
bfd_boolean ppc64_elf_edit_opd
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
(struct bfd_link_info *);
|
2018-04-09 08:02:39 +08:00
|
|
|
bfd_boolean ppc64_elf_inline_plt
|
|
|
|
|
(struct bfd_link_info *);
|
2003-11-04 14:16:39 +08:00
|
|
|
asection *ppc64_elf_tls_setup
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
(struct bfd_link_info *);
|
* reloc.c: Add PPC and PPC64 TLS relocs.
* libbfd.h: Regenerate.
* bfd-in2.h: Regenerate.
* elf64-ppc.c (TP_OFFSET, DTP_OFFSET): Declare.
(ppc64_elf_howto_raw): Add TLS howto's. Adjust R_PPC64_NONE to be
against a 32 bit field.
(ppc64_elf_reloc_type_lookup): Handle TLS relocs.
(_ppc64_elf_section_data): Add t_symndx and comments.
(ppc64_elf_section_data): Use elf_section_data macro.
(ppc64_elf_new_section_hook): American spelling.
(struct got_entry, struct plt_entry): New.
(MUST_BE_DYN_RELOC): Rename from IS_ABSOLUTE_RELOC.
(struct ppc_stub_hash_entry): Add "addend" field.
(struct ppc_link_hash_entry): Add "tls_type".
(TLS_TLS, TLS_GD_LD, TLS_LD, TLS_TPREL, TLS_DTPREL,
TLS_EXPLICIT): Define.
(struct ppc_link_hash_table): Add tls_sec, tls_get_addr, tlsld_got.
(link_hash_newfunc): Init new fields.
(ppc64_elf_link_hash_table_create): Likewise. Set init_relcount and
init_offset to NULL.
(ppc64_elf_copy_indirect_symbol): Copy got and plt info. Don't call
_bfd_elf_link_hash_copy_indirect, rather insert relevant code from
there.
(update_local_sym_info, update_plt_info): New functions.
(ppc64_elf_check_relocs): Use them. Handle TLS relocs. Adjust GOT
handling to use got.glist rather than got.refcount. Likewise for PLT.
(ppc64_elf_gc_sweep_hook): Handle TLS relocs, new GOT and PLT lists.
(func_desc_adjust): Adjust for new PLT list.
(ppc64_elf_adjust_dynamic_symbol): Likewise.
(get_sym_h, get_tls_type): New functions.
(ppc64_elf_edit_opd): Remove unused variable. Use get_sym_h.
(ppc64_elf_tls_optimize): New function.
(allocate_dynrelocs): Adjust for new PLT and GOT lists. Allocate
TLS relocs.
(ppc64_elf_size_dynamic_sections): Likewise.
(ppc_type_of_stub): Adjust for new PLT list.
(ppc_build_one_stub): Likewise.
(ppc64_elf_size_stubs): Likewise. Use get_sym_h. Treat __tls_get_addr
calls specially.
(ppc64_elf_relocate_section): Adjust for new GOT and PLT lists. Handle
TLS relocs. Report local syms using bfd_elf_local_sym_name. Don't
init GOT entries that have a reloc. Generate GOT relocs here..
(ppc64_elf_finish_dynamic_symbol): ..not here. Adjust for PLT list.
* elf64-ppc.h (ppc64_elf_tls_optimize): Declare.
2003-02-04 22:50:50 +08:00
|
|
|
bfd_boolean ppc64_elf_tls_optimize
|
2010-02-08 21:50:17 +08:00
|
|
|
(struct bfd_link_info *);
|
2004-11-04 19:55:13 +08:00
|
|
|
bfd_boolean ppc64_elf_edit_toc
|
2010-02-08 21:50:17 +08:00
|
|
|
(struct bfd_link_info *);
|
2010-03-15 09:59:57 +08:00
|
|
|
bfd_boolean ppc64_elf_has_small_toc_reloc
|
|
|
|
|
(asection *);
|
2013-07-01 11:45:05 +08:00
|
|
|
bfd_vma ppc64_elf_set_toc
|
2014-08-21 19:31:58 +08:00
|
|
|
(struct bfd_link_info *, bfd *);
|
2002-05-01 10:34:20 +08:00
|
|
|
int ppc64_elf_setup_section_lists
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
(struct bfd_link_info *);
|
2010-02-03 20:03:35 +08:00
|
|
|
void ppc64_elf_start_multitoc_partition
|
|
|
|
|
(struct bfd_link_info *);
|
|
|
|
|
bfd_boolean ppc64_elf_next_toc_section
|
2003-06-20 13:30:46 +08:00
|
|
|
(struct bfd_link_info *, asection *);
|
2010-02-03 20:03:35 +08:00
|
|
|
bfd_boolean ppc64_elf_layout_multitoc
|
|
|
|
|
(struct bfd_link_info *);
|
|
|
|
|
void ppc64_elf_finish_multitoc_partition
|
|
|
|
|
(struct bfd_link_info *);
|
2010-03-14 15:05:36 +08:00
|
|
|
bfd_boolean ppc64_elf_check_init_fini
|
|
|
|
|
(struct bfd_link_info *);
|
2003-06-19 19:49:02 +08:00
|
|
|
bfd_boolean ppc64_elf_next_input_section
|
2003-06-20 13:30:46 +08:00
|
|
|
(struct bfd_link_info *, asection *);
|
2002-11-30 16:39:46 +08:00
|
|
|
bfd_boolean ppc64_elf_size_stubs
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
(struct bfd_link_info *);
|
2002-11-30 16:39:46 +08:00
|
|
|
bfd_boolean ppc64_elf_build_stubs
|
Consolidate ppc64 ld/bfd communication
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
2014-02-17 14:38:00 +08:00
|
|
|
(struct bfd_link_info *, char **);
|
