binutils-gdb/bfd/elf32-ppc.h

61 lines
2.1 KiB
C
Raw Normal View History

* elf32-ppc.h: New file. * elf32-ppc.c: Include elf32-ppc.h. (NOP, CROR_151515, CROR_313131, TP_OFFSET, DTP_OFFSET): Define. (struct ppc_elf_link_hash_entry): Rename "root" to "elf". Adjust uses. Add "tls_mask" field. (TLS_GD, TLS_LD, TLS_TPREL, TLS_DTPREL, TLS_TLS, TLS_TPRELGD): Define. (struct ppc_elf_link_hash_table): Rename "root" to "elf". Adjust uses. Add got, relgot, plt, relplt, dynbss, relbss, dynsbss, relsbss, sdata, sdata2, tls_sec, tls_get_addr, tlsld_got fields. Make use of htab shortcuts throughout file. (ppc_elf_link_hash_newfunc): Init tls_mask field. (ppc_elf_link_hash_table_create): Init new fields. (ppc_elf_copy_indirect_symbol): Copy tls_mask. (ppc_elf_howto_raw): Add tls relocs. (ppc_elf_reloc_type_lookup): Handle them. (ppc_elf_unhandled_reloc): New function. (ppc_elf_create_got): Stash got section pointer in hash table, return status. Make .rela.got too. (ppc_elf_create_dynamic_sections): Stash section pointers in htab. (ppc_elf_adjust_dynamic_symbol): Only set up copy relocs when NON_GOT_REF set. Don't allocate space in .plt here.. (allocate_dynrelocs): ..do so here instead, properly ref-counting and not allocating plt entries unnecessarily. Allocate got entries here. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define. (ppc_elf_size_dynamic_sections): Allocate local got entries. Pass "info" during allocate_dynrelocs hash traversal. Use htab section shortcuts rather than searching for named sections. Get rid of "plt" and "strip" booleans. (update_local_sym_info, bad_shared_reloc): New functions. (ppc_elf_check_relocs): Handle TLS relocs. Move .rela.got creation to ppc_elf_create_got. Don't mark got or plt reloc syms dynamic, do so in allocate_dynreloc. Use update_local_sym_info and bad_shared_reloc. Disallow R_PPC_EMB_RELSDA, R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO, R_PPC_EMB_NADDR16_HI and R_PPC_EMB_NADDR16_HA in shared libs. R_PPC_PLTREL32 is a plt reloc too. Refcount all relocs that might use a plt entry. Set NON_GOT_REF too. Enumerate all do-nothing relocs. (ppc_elf_gc_sweep_hook): Simplify removal of dynrelocs. Handle tls relocs and all plt relocs. (ppc_elf_tls_setup, ppc_elf_tls_optimize): New functions. (ppc_elf_finish_dynamic_symbol): Don't build got entries here. (ppc_elf_finish_dynamic_sections): Rewrite tag code using htab shortcuts. (ppc_elf_relocate_section): Tidy. Handle TLS relocs. Use bfd_elf_local_sym_name. Simplify unresolved reloc code. Build got entries and got relocs here. Warn on non-zero got reloc addend. Split out branch taken/not taken reloc code into a separate switch and correct offset calculation. Allow BRTAKEN/BRNTAKEN dynamic relocs. Split out HA reloc adjustments to separate switch statement. Don't warn on reloc overflow if we've already warned about undefined. Don't rebuild sym name when reporting errors. Report all possible errors from _bfd_final_link_relocate. (bfd_elf32_bfd_final_link): Don't define.
2003-02-18 07:06:17 +01:00
/* PowerPC-specific support for 64-bit ELF.
Copyright (C) 2003-2015 Free Software Foundation, Inc.
* elf32-ppc.h: New file. * elf32-ppc.c: Include elf32-ppc.h. (NOP, CROR_151515, CROR_313131, TP_OFFSET, DTP_OFFSET): Define. (struct ppc_elf_link_hash_entry): Rename "root" to "elf". Adjust uses. Add "tls_mask" field. (TLS_GD, TLS_LD, TLS_TPREL, TLS_DTPREL, TLS_TLS, TLS_TPRELGD): Define. (struct ppc_elf_link_hash_table): Rename "root" to "elf". Adjust uses. Add got, relgot, plt, relplt, dynbss, relbss, dynsbss, relsbss, sdata, sdata2, tls_sec, tls_get_addr, tlsld_got fields. Make use of htab shortcuts throughout file. (ppc_elf_link_hash_newfunc): Init tls_mask field. (ppc_elf_link_hash_table_create): Init new fields. (ppc_elf_copy_indirect_symbol): Copy tls_mask. (ppc_elf_howto_raw): Add tls relocs. (ppc_elf_reloc_type_lookup): Handle them. (ppc_elf_unhandled_reloc): New function. (ppc_elf_create_got): Stash got section pointer in hash table, return status. Make .rela.got too. (ppc_elf_create_dynamic_sections): Stash section pointers in htab. (ppc_elf_adjust_dynamic_symbol): Only set up copy relocs when NON_GOT_REF set. Don't allocate space in .plt here.. (allocate_dynrelocs): ..do so here instead, properly ref-counting and not allocating plt entries unnecessarily. Allocate got entries here. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define. (ppc_elf_size_dynamic_sections): Allocate local got entries. Pass "info" during allocate_dynrelocs hash traversal. Use htab section shortcuts rather than searching for named sections. Get rid of "plt" and "strip" booleans. (update_local_sym_info, bad_shared_reloc): New functions. (ppc_elf_check_relocs): Handle TLS relocs. Move .rela.got creation to ppc_elf_create_got. Don't mark got or plt reloc syms dynamic, do so in allocate_dynreloc. Use update_local_sym_info and bad_shared_reloc. Disallow R_PPC_EMB_RELSDA, R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO, R_PPC_EMB_NADDR16_HI and R_PPC_EMB_NADDR16_HA in shared libs. R_PPC_PLTREL32 is a plt reloc too. Refcount all relocs that might use a plt entry. Set NON_GOT_REF too. Enumerate all do-nothing relocs. (ppc_elf_gc_sweep_hook): Simplify removal of dynrelocs. Handle tls relocs and all plt relocs. (ppc_elf_tls_setup, ppc_elf_tls_optimize): New functions. (ppc_elf_finish_dynamic_symbol): Don't build got entries here. (ppc_elf_finish_dynamic_sections): Rewrite tag code using htab shortcuts. (ppc_elf_relocate_section): Tidy. Handle TLS relocs. Use bfd_elf_local_sym_name. Simplify unresolved reloc code. Build got entries and got relocs here. Warn on non-zero got reloc addend. Split out branch taken/not taken reloc code into a separate switch and correct offset calculation. Allow BRTAKEN/BRNTAKEN dynamic relocs. Split out HA reloc adjustments to separate switch statement. Don't warn on reloc overflow if we've already warned about undefined. Don't rebuild sym name when reporting errors. Report all possible errors from _bfd_final_link_relocate. (bfd_elf32_bfd_final_link): Don't define.
2003-02-18 07:06:17 +01:00
This file is part of BFD, the Binary File Descriptor library.
* elf32-ppc.h: New file. * elf32-ppc.c: Include elf32-ppc.h. (NOP, CROR_151515, CROR_313131, TP_OFFSET, DTP_OFFSET): Define. (struct ppc_elf_link_hash_entry): Rename "root" to "elf". Adjust uses. Add "tls_mask" field. (TLS_GD, TLS_LD, TLS_TPREL, TLS_DTPREL, TLS_TLS, TLS_TPRELGD): Define. (struct ppc_elf_link_hash_table): Rename "root" to "elf". Adjust uses. Add got, relgot, plt, relplt, dynbss, relbss, dynsbss, relsbss, sdata, sdata2, tls_sec, tls_get_addr, tlsld_got fields. Make use of htab shortcuts throughout file. (ppc_elf_link_hash_newfunc): Init tls_mask field. (ppc_elf_link_hash_table_create): Init new fields. (ppc_elf_copy_indirect_symbol): Copy tls_mask. (ppc_elf_howto_raw): Add tls relocs. (ppc_elf_reloc_type_lookup): Handle them. (ppc_elf_unhandled_reloc): New function. (ppc_elf_create_got): Stash got section pointer in hash table, return status. Make .rela.got too. (ppc_elf_create_dynamic_sections): Stash section pointers in htab. (ppc_elf_adjust_dynamic_symbol): Only set up copy relocs when NON_GOT_REF set. Don't allocate space in .plt here.. (allocate_dynrelocs): ..do so here instead, properly ref-counting and not allocating plt entries unnecessarily. Allocate got entries here. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define. (ppc_elf_size_dynamic_sections): Allocate local got entries. Pass "info" during allocate_dynrelocs hash traversal. Use htab section shortcuts rather than searching for named sections. Get rid of "plt" and "strip" booleans. (update_local_sym_info, bad_shared_reloc): New functions. (ppc_elf_check_relocs): Handle TLS relocs. Move .rela.got creation to ppc_elf_create_got. Don't mark got or plt reloc syms dynamic, do so in allocate_dynreloc. Use update_local_sym_info and bad_shared_reloc. Disallow R_PPC_EMB_RELSDA, R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO, R_PPC_EMB_NADDR16_HI and R_PPC_EMB_NADDR16_HA in shared libs. R_PPC_PLTREL32 is a plt reloc too. Refcount all relocs that might use a plt entry. Set NON_GOT_REF too. Enumerate all do-nothing relocs. (ppc_elf_gc_sweep_hook): Simplify removal of dynrelocs. Handle tls relocs and all plt relocs. (ppc_elf_tls_setup, ppc_elf_tls_optimize): New functions. (ppc_elf_finish_dynamic_symbol): Don't build got entries here. (ppc_elf_finish_dynamic_sections): Rewrite tag code using htab shortcuts. (ppc_elf_relocate_section): Tidy. Handle TLS relocs. Use bfd_elf_local_sym_name. Simplify unresolved reloc code. Build got entries and got relocs here. Warn on non-zero got reloc addend. Split out branch taken/not taken reloc code into a separate switch and correct offset calculation. Allow BRTAKEN/BRNTAKEN dynamic relocs. Split out HA reloc adjustments to separate switch statement. Don't warn on reloc overflow if we've already warned about undefined. Don't rebuild sym name when reporting errors. Report all possible errors from _bfd_final_link_relocate. (bfd_elf32_bfd_final_link): Don't define.
2003-02-18 07:06:17 +01:00
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.
* elf32-ppc.h: New file. * elf32-ppc.c: Include elf32-ppc.h. (NOP, CROR_151515, CROR_313131, TP_OFFSET, DTP_OFFSET): Define. (struct ppc_elf_link_hash_entry): Rename "root" to "elf". Adjust uses. Add "tls_mask" field. (TLS_GD, TLS_LD, TLS_TPREL, TLS_DTPREL, TLS_TLS, TLS_TPRELGD): Define. (struct ppc_elf_link_hash_table): Rename "root" to "elf". Adjust uses. Add got, relgot, plt, relplt, dynbss, relbss, dynsbss, relsbss, sdata, sdata2, tls_sec, tls_get_addr, tlsld_got fields. Make use of htab shortcuts throughout file. (ppc_elf_link_hash_newfunc): Init tls_mask field. (ppc_elf_link_hash_table_create): Init new fields. (ppc_elf_copy_indirect_symbol): Copy tls_mask. (ppc_elf_howto_raw): Add tls relocs. (ppc_elf_reloc_type_lookup): Handle them. (ppc_elf_unhandled_reloc): New function. (ppc_elf_create_got): Stash got section pointer in hash table, return status. Make .rela.got too. (ppc_elf_create_dynamic_sections): Stash section pointers in htab. (ppc_elf_adjust_dynamic_symbol): Only set up copy relocs when NON_GOT_REF set. Don't allocate space in .plt here.. (allocate_dynrelocs): ..do so here instead, properly ref-counting and not allocating plt entries unnecessarily. Allocate got entries here. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define. (ppc_elf_size_dynamic_sections): Allocate local got entries. Pass "info" during allocate_dynrelocs hash traversal. Use htab section shortcuts rather than searching for named sections. Get rid of "plt" and "strip" booleans. (update_local_sym_info, bad_shared_reloc): New functions. (ppc_elf_check_relocs): Handle TLS relocs. Move .rela.got creation to ppc_elf_create_got. Don't mark got or plt reloc syms dynamic, do so in allocate_dynreloc. Use update_local_sym_info and bad_shared_reloc. Disallow R_PPC_EMB_RELSDA, R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO, R_PPC_EMB_NADDR16_HI and R_PPC_EMB_NADDR16_HA in shared libs. R_PPC_PLTREL32 is a plt reloc too. Refcount all relocs that might use a plt entry. Set NON_GOT_REF too. Enumerate all do-nothing relocs. (ppc_elf_gc_sweep_hook): Simplify removal of dynrelocs. Handle tls relocs and all plt relocs. (ppc_elf_tls_setup, ppc_elf_tls_optimize): New functions. (ppc_elf_finish_dynamic_symbol): Don't build got entries here. (ppc_elf_finish_dynamic_sections): Rewrite tag code using htab shortcuts. (ppc_elf_relocate_section): Tidy. Handle TLS relocs. Use bfd_elf_local_sym_name. Simplify unresolved reloc code. Build got entries and got relocs here. Warn on non-zero got reloc addend. Split out branch taken/not taken reloc code into a separate switch and correct offset calculation. Allow BRTAKEN/BRNTAKEN dynamic relocs. Split out HA reloc adjustments to separate switch statement. Don't warn on reloc overflow if we've already warned about undefined. Don't rebuild sym name when reporting errors. Report all possible errors from _bfd_final_link_relocate. (bfd_elf32_bfd_final_link): Don't define.
2003-02-18 07:06:17 +01:00
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.
* elf32-ppc.h: New file. * elf32-ppc.c: Include elf32-ppc.h. (NOP, CROR_151515, CROR_313131, TP_OFFSET, DTP_OFFSET): Define. (struct ppc_elf_link_hash_entry): Rename "root" to "elf". Adjust uses. Add "tls_mask" field. (TLS_GD, TLS_LD, TLS_TPREL, TLS_DTPREL, TLS_TLS, TLS_TPRELGD): Define. (struct ppc_elf_link_hash_table): Rename "root" to "elf". Adjust uses. Add got, relgot, plt, relplt, dynbss, relbss, dynsbss, relsbss, sdata, sdata2, tls_sec, tls_get_addr, tlsld_got fields. Make use of htab shortcuts throughout file. (ppc_elf_link_hash_newfunc): Init tls_mask field. (ppc_elf_link_hash_table_create): Init new fields. (ppc_elf_copy_indirect_symbol): Copy tls_mask. (ppc_elf_howto_raw): Add tls relocs. (ppc_elf_reloc_type_lookup): Handle them. (ppc_elf_unhandled_reloc): New function. (ppc_elf_create_got): Stash got section pointer in hash table, return status. Make .rela.got too. (ppc_elf_create_dynamic_sections): Stash section pointers in htab. (ppc_elf_adjust_dynamic_symbol): Only set up copy relocs when NON_GOT_REF set. Don't allocate space in .plt here.. (allocate_dynrelocs): ..do so here instead, properly ref-counting and not allocating plt entries unnecessarily. Allocate got entries here. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define. (ppc_elf_size_dynamic_sections): Allocate local got entries. Pass "info" during allocate_dynrelocs hash traversal. Use htab section shortcuts rather than searching for named sections. Get rid of "plt" and "strip" booleans. (update_local_sym_info, bad_shared_reloc): New functions. (ppc_elf_check_relocs): Handle TLS relocs. Move .rela.got creation to ppc_elf_create_got. Don't mark got or plt reloc syms dynamic, do so in allocate_dynreloc. Use update_local_sym_info and bad_shared_reloc. Disallow R_PPC_EMB_RELSDA, R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO, R_PPC_EMB_NADDR16_HI and R_PPC_EMB_NADDR16_HA in shared libs. R_PPC_PLTREL32 is a plt reloc too. Refcount all relocs that might use a plt entry. Set NON_GOT_REF too. Enumerate all do-nothing relocs. (ppc_elf_gc_sweep_hook): Simplify removal of dynrelocs. Handle tls relocs and all plt relocs. (ppc_elf_tls_setup, ppc_elf_tls_optimize): New functions. (ppc_elf_finish_dynamic_symbol): Don't build got entries here. (ppc_elf_finish_dynamic_sections): Rewrite tag code using htab shortcuts. (ppc_elf_relocate_section): Tidy. Handle TLS relocs. Use bfd_elf_local_sym_name. Simplify unresolved reloc code. Build got entries and got relocs here. Warn on non-zero got reloc addend. Split out branch taken/not taken reloc code into a separate switch and correct offset calculation. Allow BRTAKEN/BRNTAKEN dynamic relocs. Split out HA reloc adjustments to separate switch statement. Don't warn on reloc overflow if we've already warned about undefined. Don't rebuild sym name when reporting errors. Report all possible errors from _bfd_final_link_relocate. (bfd_elf32_bfd_final_link): Don't define.
2003-02-18 07:06:17 +01:00
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. */
* elf32-ppc.h: New file. * elf32-ppc.c: Include elf32-ppc.h. (NOP, CROR_151515, CROR_313131, TP_OFFSET, DTP_OFFSET): Define. (struct ppc_elf_link_hash_entry): Rename "root" to "elf". Adjust uses. Add "tls_mask" field. (TLS_GD, TLS_LD, TLS_TPREL, TLS_DTPREL, TLS_TLS, TLS_TPRELGD): Define. (struct ppc_elf_link_hash_table): Rename "root" to "elf". Adjust uses. Add got, relgot, plt, relplt, dynbss, relbss, dynsbss, relsbss, sdata, sdata2, tls_sec, tls_get_addr, tlsld_got fields. Make use of htab shortcuts throughout file. (ppc_elf_link_hash_newfunc): Init tls_mask field. (ppc_elf_link_hash_table_create): Init new fields. (ppc_elf_copy_indirect_symbol): Copy tls_mask. (ppc_elf_howto_raw): Add tls relocs. (ppc_elf_reloc_type_lookup): Handle them. (ppc_elf_unhandled_reloc): New function. (ppc_elf_create_got): Stash got section pointer in hash table, return status. Make .rela.got too. (ppc_elf_create_dynamic_sections): Stash section pointers in htab. (ppc_elf_adjust_dynamic_symbol): Only set up copy relocs when NON_GOT_REF set. Don't allocate space in .plt here.. (allocate_dynrelocs): ..do so here instead, properly ref-counting and not allocating plt entries unnecessarily. Allocate got entries here. (WILL_CALL_FINISH_DYNAMIC_SYMBOL): Define. (ppc_elf_size_dynamic_sections): Allocate local got entries. Pass "info" during allocate_dynrelocs hash traversal. Use htab section shortcuts rather than searching for named sections. Get rid of "plt" and "strip" booleans. (update_local_sym_info, bad_shared_reloc): New functions. (ppc_elf_check_relocs): Handle TLS relocs. Move .rela.got creation to ppc_elf_create_got. Don't mark got or plt reloc syms dynamic, do so in allocate_dynreloc. Use update_local_sym_info and bad_shared_reloc. Disallow R_PPC_EMB_RELSDA, R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO, R_PPC_EMB_NADDR16_HI and R_PPC_EMB_NADDR16_HA in shared libs. R_PPC_PLTREL32 is a plt reloc too. Refcount all relocs that might use a plt entry. Set NON_GOT_REF too. Enumerate all do-nothing relocs. (ppc_elf_gc_sweep_hook): Simplify removal of dynrelocs. Handle tls relocs and all plt relocs. (ppc_elf_tls_setup, ppc_elf_tls_optimize): New functions. (ppc_elf_finish_dynamic_symbol): Don't build got entries here. (ppc_elf_finish_dynamic_sections): Rewrite tag code using htab shortcuts. (ppc_elf_relocate_section): Tidy. Handle TLS relocs. Use bfd_elf_local_sym_name. Simplify unresolved reloc code. Build got entries and got relocs here. Warn on non-zero got reloc addend. Split out branch taken/not taken reloc code into a separate switch and correct offset calculation. Allow BRTAKEN/BRNTAKEN dynamic relocs. Split out HA reloc adjustments to separate switch statement. Don't warn on reloc overflow if we've already warned about undefined. Don't rebuild sym name when reporting errors. Report all possible errors from _bfd_final_link_relocate. (bfd_elf32_bfd_final_link): Don't define.
2003-02-18 07:06:17 +01:00
enum ppc_elf_plt_type
{
PLT_UNSET,
PLT_OLD,
PLT_NEW,
PLT_VXWORKS
};
ppc476 icache bug workaround This implements a work-around for an icache bug on 476 that can cause execution of stale instructions when control falls through from one page to the next. The idea is to prevent such fall-through by replacing the last instruction on a page with a branch to a patch area containing the instruction, then branch to the next page. The patch also fixes a number of bugs in the existing support for long branch trampolines. bfd/ * elf32-ppc.c (struct ppc_elf_link_hash_table): Add params. Delete emit_stub_syms, no_tls_get_addr_opt. Update all uses. (ppc_elf_link_params): New function. (ppc_elf_create_glink): Align .glink to 64 bytes for ppc476 workaround. (ppc_elf_select_plt_layout): Remove plt_style and emit_stub_syms parameters. Use htab->params instead. (ppc_elf_tls_setup): Remove no_tls_get_addr_opt parameter. (ppc_elf_size_dynamic_sections): Align __glink_PLTresolve to 64 bytes for ppc476 workaround. (struct ppc_elf_relax_info): New. (ppc_elf_relax_section): Exclude linker created sections and those too small to hold one instruction. Don't add another branch around trampolines on later relax passes. Don't generate trampolines for undefined symbols when !relocatable, nor for plugin symbols. Allocate space for ppc476 workaround patch area. Free fixups on error return path. (ppc_elf_relocate_section): Handle ppc476 workaround patching. * elf32-ppc.h (struct ppc_elf_params): New. (ppc_elf_select_plt_layout, ppc_elf_tls_setup): Update prototype. (ppc_elf_link_params): Declare. * section.c (SEC_INFO_TYPE_TARGET): Define. * bfd-in2.h: Regenerate. ld/ * emultempl/ppc32elf.em (no_tls_get_addr_opt, emit_stub_syms) plt_style): Delete. Adjust all refs to instead use.. (params): ..this. New variable. (ppc_after_open_output): New function. Tweak params and pass to ppc_elf_link_params. (ppc_after_open): Adjust ppc_elf_select_plt_layout call. (ppc_before_allocation): Adjust ppc_elf_tls_setup call. Enable relaxation for ppc476 workaround. (PARSE_AND_LIST_*): Add --{no-,}ppc476-workaround support. (LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS): Define.
2014-01-29 22:56:02 +01:00
/* Various options passed from the linker to bfd backend. */
struct ppc_elf_params
{
/* Chooses the type of .plt. */
enum ppc_elf_plt_type plt_style;
/* Whether to emit symbols for stubs. */
int emit_stub_syms;
/* Whether to emit special stub for __tls_get_addr calls. */
int no_tls_get_addr_opt;
/* Insert trampolines for branches that won't reach their destination. */
int branch_trampolines;
/* Avoid execution falling into new page. */
int ppc476_workaround;
unsigned int pagesize_p2;
/* The bfd backend detected a non-PIC reference to a protected symbol
defined in a shared library. */
int pic_fixup;
ppc476 icache bug workaround This implements a work-around for an icache bug on 476 that can cause execution of stale instructions when control falls through from one page to the next. The idea is to prevent such fall-through by replacing the last instruction on a page with a branch to a patch area containing the instruction, then branch to the next page. The patch also fixes a number of bugs in the existing support for long branch trampolines. bfd/ * elf32-ppc.c (struct ppc_elf_link_hash_table): Add params. Delete emit_stub_syms, no_tls_get_addr_opt. Update all uses. (ppc_elf_link_params): New function. (ppc_elf_create_glink): Align .glink to 64 bytes for ppc476 workaround. (ppc_elf_select_plt_layout): Remove plt_style and emit_stub_syms parameters. Use htab->params instead. (ppc_elf_tls_setup): Remove no_tls_get_addr_opt parameter. (ppc_elf_size_dynamic_sections): Align __glink_PLTresolve to 64 bytes for ppc476 workaround. (struct ppc_elf_relax_info): New. (ppc_elf_relax_section): Exclude linker created sections and those too small to hold one instruction. Don't add another branch around trampolines on later relax passes. Don't generate trampolines for undefined symbols when !relocatable, nor for plugin symbols. Allocate space for ppc476 workaround patch area. Free fixups on error return path. (ppc_elf_relocate_section): Handle ppc476 workaround patching. * elf32-ppc.h (struct ppc_elf_params): New. (ppc_elf_select_plt_layout, ppc_elf_tls_setup): Update prototype. (ppc_elf_link_params): Declare. * section.c (SEC_INFO_TYPE_TARGET): Define. * bfd-in2.h: Regenerate. ld/ * emultempl/ppc32elf.em (no_tls_get_addr_opt, emit_stub_syms) plt_style): Delete. Adjust all refs to instead use.. (params): ..this. New variable. (ppc_after_open_output): New function. Tweak params and pass to ppc_elf_link_params. (ppc_after_open): Adjust ppc_elf_select_plt_layout call. (ppc_before_allocation): Adjust ppc_elf_tls_setup call. Enable relaxation for ppc476 workaround. (PARSE_AND_LIST_*): Add --{no-,}ppc476-workaround support. (LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS): Define.
2014-01-29 22:56:02 +01:00
};
void ppc_elf_link_params (struct bfd_link_info *, struct ppc_elf_params *);
int ppc_elf_select_plt_layout (bfd *, struct bfd_link_info *);
asection *ppc_elf_tls_setup (bfd *, struct bfd_link_info *);
bfd_boolean ppc_elf_tls_optimize (bfd *, struct bfd_link_info *);
Rewrite ppc32 backend .sdata and .sdata2 handling 1) _SDA_BASE_ and _SDA2_BASE_ and defined automatically, in a similar manner to the way _GLOBAL_OFFSET_TABLE_ is handled. It's a little more complicated to remove the symbols because _SDA_BASE_ needs to be there if either .sdata or .sbss is present, and similarly for _SDA2_BASE. 2) The linker created .sdata and .sdata2 sections used for R_PPC_EMB_SDAI16 and R_PPC_EMB_SDA2I16 pointers are created early. Nowadays we strip unneeded sections from the output, so it isn't necessary to delay creating the sections. 3) The output section for targets of various SDA relocs is now checked as per the ABI(s). We previously allowed .sdata.foo and similar, most likely because at some stage we were checking input sections. Also, the patch fixes a long-standing bug in size_input_sections that affects the values of symbols defined in stripped input sections. PR 16952 bfd/ * elf32-ppc.c (ppc_elf_create_linker_section): Move earlier. Remove redundant setting of htab->elf.dynobj. Don't align. Define .sdata symbols using _bfd_elf_define_linkage_sym. (ppc_elf_create_glink): Call ppc_elf_create_linker_section. (create_sdata_sym): Delete. (elf_allocate_pointer_linker_section): Rename from elf_create_pointer_linker_section. Align section. (ppc_elf_check_relocs): Don't call ppc_elf_creat_linker_section directly here, or create_sdata_sym. Set ref_regular on _SDA_BASE_ and _SDA2_BASE_. (ppc_elf_size_dynamic_sections): Remove ATTRIBUTE_UNUSED on param. Remove unnecessary tests on _SDA_BASE_ sym. (maybe_strip_sdasym, ppc_elf_maybe_strip_sdata_syms): New functions. (ppc_elf_relocate_section): Tighten SDA reloc symbol section checks. * elf32-ppc.h (ppc_elf_set_sdata_syms): Delete. (ppc_elf_maybe_strip_sdata_syms): Declare. ld/ * emulparams/elf32ppccommon.sh (_SDA_BASE_, _SDA2_BASE_): Delete. * emultempl/ppc32elf.em (ppc_before_allocation): Call ppc_elf_maybe_strip_sdata_syms. * ldlang.c (size_input_section): Correct output_offset value for excluded input sections.
2014-05-20 04:12:42 +02:00
void ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *);
Add support for PowerPC VLE. 2012-05-14 Catherine Moore <clm@codesourcery.com> * NEWS: Mention PowerPC VLE port. 2012-05-14 James Lemke <jwlemke@codesourcery.com> Catherine Moore <clm@codesourcery.com> bfd/ * bfd.c (bfd_lookup_section_flags): Add section parm. * ecoff.c (bfd_debug_section): Remove flag_info initializer. * elf-bfd.h (bfd_elf_section_data): Move in section_flag_info. (bfd_elf_lookup_section_flags): Add section parm. * elf32-ppc.c (is_ppc_vle): New function. (ppc_elf_modify_segment_map): New function. (elf_backend_modify_segment_map): Define. (has_vle_insns): New define. * elf32-ppc.h (ppc_elf_modify_segment_map): Declare. * elflink.c (bfd_elf_lookup_section_flags): Add return value & parm. Move in logic to omit / include a section. * libbfd-in.h (bfd_link_info): Add section parm. (bfd_generic_lookup_section_flags): Likewise. * reloc.c (bfd_generic_lookup_section_flags): Likewise. * section.c (bfd_section): Move out section_flag_info. (BFD_FAKE_SECTION): Remove flag_info initializer. * targets.c (_bfd_lookup_section_flags): Add section parm. 2012-05-14 Catherine Moore <clm@codesourcery.com> bfd/ * archures.c (bfd_mach_ppc_vle): New. * bfd-in2.h: Regenerated. * cpu-powerpc.c (bfd_powerpc_archs): New entry for vle. * elf32-ppc.c (split16_format_type): New enumeration. (ppc_elf_vle_split16): New function. (HOWTO): Add entries for R_PPC_VLE relocations. (ppc_elf_reloc_type_lookup): Handle PPC_VLE relocations. (ppc_elf_section_flags): New function. (ppc_elf_lookup_section_flags): New function. (ppc_elf_section_processing): New function. (ppc_elf_check_relocs): Handle PPC_VLE relocations. (ppc_elf_relocation_section): Likewise. (elf_backend_lookup_section_flags_hook): Define. (elf_backend_section_flags): Define. (elf_backend_section_processing): Define. * elf32-ppc.h (ppc_elf_section_processing): Declare. * libbfd.h: Regenerated. * reloc.c (BFD_RELOC_PPC_VLE_REL8, BFD_RELOC_PPC_VLE_REL15, BFD_RELOC_PPC_VLE_REL24, BFD_RELOC_PPC_VLE_LO16A, BFD_RELOC_PPC_VLE_LO16D, BFD_RELOC_PPC_VLE_HI16A, BFD_RELOC_PPC_VLE_HI16D, BFD_RELOC_PPC_VLE_HA16A, BFD_RELOC_PPC_VLE_HA16D, BFD_RELOC_PPC_VLE_SDA21, BFD_RELOC_PPC_VLE_SDA21_LO, BFD_RELOC_PPC_VLE_SDAREL_LO16A, BFD_RELOC_PPC_VLE_SDAREL_LO16D, BFD_RELOC_PPC_VLE_SDAREL_HI16A, BFD_RELOC_PPC_VLE_SDAREL_HI16D, BFD_RELOC_PPC_VLE_SDAREL_HA16A, BFD_RELOC_PPC_VLE_SDAREL_HA16D): New bfd relocations. 2012-05-14 James Lemke <jwlemke@codesourcery.com> gas/ * config/tc-ppc.c (insn_validate): New func of existing code to call.. (ppc_setup_opcodes): ..from 2 places here. Revise for second (VLE) opcode table. Add #ifdef'd code to print opcode tables. 2012-05-14 James Lemke <jwlemke@codesourcery.com> gas/ * config/tc-ppc.c (ppc_setup_opcodes): Allow out-of-order for the VLE conditional branches. 2012-05-14 Catherine Moore <clm@codesourcery.com> Maciej W. Rozycki <macro@codesourcery.com> Rhonda Wittels <rhonda@codesourcery.com> gas/ * config/tc-ppc.c (PPC_VLE_SPLIT16A): New macro. (PPC_VLE_SPLIT16D): New macro. (PPC_VLE_LO16A): New macro. (PPC_VLE_LO16D): New macro. (PPC_VLE_HI16A): New macro. (PPC_VLE_HI16D): New macro. (PPC_VLE_HA16A): New macro. (PPC_VLE_HA16D): New macro. (PPC_APUINFO_VLE): New definition. (md_chars_to_number): New function. (md_parse_option): Check for combinations of little endian and -mvle. (md_show_usage): Document -mvle. (ppc_arch): Recognize VLE. (ppc_mach): Recognize bfd_mach_ppc_vle. (ppc_setup_opcodes): Print the opcode table if * config/tc-ppc.h (ppc_frag_check): Declare. * doc/c-ppc.texi: Document -mvle. * NEWS: Mention PowerPC VLE port. 2012-05-14 Catherine Moore <clm@codesourcery.com> gas/ * config/tc-ppc.h (ppc_dw2_line_min_insn_length): Declare. (DWARF2_LINE_MIN_INSN_LENGTH): Redefine. * config/tc-ppc.c (ppc_dw2_line_min_insn_length): New. * dwarf2dbg.c (scale_addr_delta): Handle values of 1 for DWARF2_LINE_MIN_INSN_LENGTH. 2012-05-14 Catherine Moore <clm@codesourcery.com> Maciej W. Rozycki <macro@codesourcery.com> Rhonda Wittels <rhonda@codesourcery.com> gas/testsuite/ * gas/ppc/ppc.exp: Run new tests. * gas/ppc/vle-reloc.d: New test. * gas/ppc/vle-reloc.s: New test. * gas/ppc/vle-simple-1.d: New test. * gas/ppc/vle-simple-1.s: New test. * gas/ppc/vle-simple-2.d: New test. * gas/ppc/vle-simple-2.s: New test. * gas/ppc/vle-simple-3.d: New test. * gas/ppc/vle-simple-3.s: New test. * gas/ppc/vle-simple-4.d: New test. * gas/ppc/vle-simple-4.s: New test. * gas/ppc/vle-simple-5.d: New test. * gas/ppc/vle-simple-5.s: New test. * gas/ppc/vle-simple-6.d: New test. * gas/ppc/vle-simple-6.s: New test. * gas/ppc/vle.d: New test. * gas/ppc/vle.s: New test. 2012-05-14 James Lemke <jwlemke@codesourcery.com> include/elf/ * ppc.h (SEC_PPC_VLE): Remove. 2012-05-14 Catherine Moore <clm@codesourcery.com> James Lemke <jwlemke@codesourcery.com> include/elf/ * ppc.h (R_PPC_VLE_REL8): New reloction. (R_PPC_VLE_REL15): Likewise. (R_PPC_VLE_REL24): Likewise. (R_PPC_VLE_LO16A): Likewise. (R_PPC_VLE_LO16D): Likewise. (R_PPC_VLE_HI16A): Likewise. (R_PPC_VLE_HI16D): Likewise. (R_PPC_VLE_HA16A): Likewise. (R_PPC_VLE_HA16D): Likewise. (R_PPC_VLE_SDA21): Likewise. (R_PPC_VLE_SDA21_LO): Likewise. (R_PPC_VLE_SDAREL_LO16A): Likewise. (R_PPC_VLE_SDAREL_LO16D): Likewise. (R_PPC_VLE_SDAREL_HI16A): Likewise. (R_PPC_VLE_SDAREL_HI16D): Likewise. (R_PPC_VLE_SDAREL_HA16A): Likewise. (R_PPC_VLE_SDAREL_HA16D): Likewise. (SEC_PPC_VLE): Remove. (PF_PPC_VLE): New program header flag. (SHF_PPC_VLE): New section header flag. (vle_opcodes, vle_num_opcodes): New. (VLE_OP): New macro. (VLE_OP_TO_SEG): New macro. 2012-05-14 Catherine Moore <clm@codesourcery.com> Maciej W. Rozycki <macro@codesourcery.com> Rhonda Wittels <rhonda@codesourcery.com> include/opcode/ * ppc.h (PPC_OPCODE_VLE): New definition. (PPC_OP_SA): New macro. (PPC_OP_SE_VLE): New macro. (PPC_OP): Use a variable shift amount. (powerpc_operand): Update comments. (PPC_OPSHIFT_INV): New macro. (PPC_OPERAND_CR): Replace with... (PPC_OPERAND_CR_BIT): ...this and (PPC_OPERAND_CR_REG): ...this. 2012-05-14 James Lemke <jwlemke@codesourcery.com> ld/ * ldlang.c (walk_wild_consider_section): Don't copy section_flag_list. Pass it to callback. (walk_wild_section_general): Pass section_flag_list to callback. (lang_add_section): Add sflag_list parm. Move out logic to keep / omit a section & call bfd_lookup_section_flags. (output_section_callback_fast): Add sflag_list parm. Add new parm to lang_add_section calls. (output_section_callback): Likewise. (check_section_callback): Add sflag_list parm. (lang_place_orphans): Add new parm to lang_add_section calls. (gc_section_callback): Add sflag_list parm. (find_relro_section_callback): Likewise. * ldlang.h (callback_t): Add flag_info parm. (lang_add_section): Add sflag_list parm. * emultempl/armelf.em (elf32_arm_add_stub_section): Add lang_add_section parm. * emultempl/beos.em (gld*_place_orphan): Likewise. * emultempl/elf32.em (gld*_place_orphan): Likewise. * emultempl/hppaelf.em (hppaelf_add_stub_section): Likewise. * emultempl/m68hc1xelf.em (m68hc11elf_add_stub_section): Likewise. * emultempl/mipself.em (mips_add_stub_section): Likewise. * emultempl/mmo.em (mmo_place_orphan): Likewise. * emultempl/pe.em (gld_*_place_orphan): Likewise. * emultempl/pep.em (gld_*_place_orphan): Likewise. * emultempl/ppc64elf.em (ppc_add_stub_section): Likewise. * emultempl/spuelf.em (spu_place_special_section): Likewise. * emultempl/vms.em (vms_place_orphan): Likewise. 2012-05-14 James Lemke <jwlemke@codesourcery.com> ld/testsuite/ * ld-powerpc/powerpc.exp: Create ppceabitests. * ld-powerpc/vle-multiseg.s: New. * ld-powerpc/vle-multiseg-1.d: New. * ld-powerpc/vle-multiseg-1.ld: New. * ld-powerpc/vle-multiseg-2.d: New. * ld-powerpc/vle-multiseg-2.ld: New. * ld-powerpc/vle-multiseg-3.d: New. * ld-powerpc/vle-multiseg-3.ld: New. * ld-powerpc/vle-multiseg-4.d: New. * ld-powerpc/vle-multiseg-4.ld: New. * ld-powerpc/vle-multiseg-5.d: New. * ld-powerpc/vle-multiseg-5.ld: New. * ld-powerpc/vle-multiseg-6.d: New. * ld-powerpc/vle-multiseg-6.ld: New. * ld-powerpc/vle-multiseg-6a.s: New. * ld-powerpc/vle-multiseg-6b.s: New. * ld-powerpc/vle-multiseg-6c.s: New. * ld-powerpc/vle-multiseg-6d.s: New. * ld-powerpc/powerpc.exp: Run new tests. 2012-05-14 Catherine Moore <clm@codesourcery.com> ld/ * NEWS: Mention PowerPC VLE port. 2012-05-14 Catherine Moore <clm@codesourcery.com> ld/testsuite/ * ld-powerpc/apuinfo.rd: Update for VLE. * ld-powerpc/vle-reloc-1.d: New. * ld-powerpc/vle-reloc-1.s: New. * ld-powerpc/vle-reloc-2.d: New. * ld-powerpc/vle-reloc-2.s: New. * ld-powerpc/vle-reloc-3.d: New. * ld-powerpc/vle-reloc-3.s: New. * ld-powerpc/vle-reloc-def-1.s: New. * ld-powerpc/vle-reloc-def-2.s: New. * ld-powerpc/vle-reloc-def-3.s: New. 2012-05-14 James Lemke <jwlemke@codesourcery.com> opcodes/ * ppc-dis.c (get_powerpc_dialect): Use is_ppc_vle. (PPC_OPCD_SEGS, VLE_OPCD_SEGS): New defines. (vle_opcd_indices): New array. (lookup_vle): New function. (disassemble_init_powerpc): Revise for second (VLE) opcode table. (print_insn_powerpc): Likewise. * ppc-opc.c: Likewise. 2012-05-14 Catherine Moore <clm@codesourcery.com> Maciej W. Rozycki <macro@codesourcery.com> Rhonda Wittels <rhonda@codesourcery.com> Nathan Froyd <froydnj@codesourcery.com> opcodes/ * ppc-opc.c (insert_arx, extract_arx): New functions. (insert_ary, extract_ary): New functions. (insert_li20, extract_li20): New functions. (insert_rx, extract_rx): New functions. (insert_ry, extract_ry): New functions. (insert_sci8, extract_sci8): New functions. (insert_sci8n, extract_sci8n): New functions. (insert_sd4h, extract_sd4h): New functions. (insert_sd4w, extract_sd4w): New functions. (insert_vlesi, extract_vlesi): New functions. (insert_vlensi, extract_vlensi): New functions. (insert_vleui, extract_vleui): New functions. (insert_vleil, extract_vleil): New functions. (BI_MASK, BB_MASK, BT): Use PPC_OPERAND_CR_BIT. (BI16, BI32, BO32, B8): New. (B15, B24, CRD32, CRS): New. (CRD, OBF, BFA, CR, CRFS): Use PPC_OPERAND_CR_REG. (DB, IMM20, RD, Rx, ARX, RY, RZ): New. (ARY, SCLSCI8, SCLSCI8N, SE_SD, SE_SDH): New. (SH6_MASK): Use PPC_OPSHIFT_INV. (SI8, UI5, OIMM5, UI7, BO16): New. (VLESIMM, VLENSIMM, VLEUIMM, VLEUIMML): New. (XT6, XA6, XB6, XB6S, XC6): Use PPC_OPSHIFT_INV. (ALLOW8_SPRG): New. (insert_sprg, extract_sprg): Check ALLOW8_SPRG. (OPVUP, OPVUP_MASK OPVUP): New (BD8, BD8_MASK, BD8IO, BD8IO_MASK): New. (EBD8IO, EBD8IO1_MASK, EBD8IO2_MASK, EBD8IO3_MASK): New. (BD15, BD15_MASK, EBD15, EBD15_MASK, EBD15BI, EBD15BI_MASK): New. (BD24,BD24_MASK, C_LK, C_LK_MASK, C, C_MASK): New. (IA16, IA16_MASK, I16A, I16A_MASK, I16L, I16L_MASK): New. (IM7, IM7_MASK, LI20, LI20_MASK, SCI8, SCI8_MASK): New. (SCI8BF, SCI8BF_MASK, SD4, SD4_MASK): New. (SE_IM5, SE_IM5_MASK): New. (SE_R, SE_R_MASK, SE_RR, SE_RR_MASK): New. (EX, EX_MASK, BO16F, BO16T, BO32F, BO32T): New. (BO32DNZ, BO32DZ): New. (NO371, PPCSPE, PPCISEL, PPCEFS, MULHW): Include PPC_OPCODE_VLE. (PPCVLE): New. (powerpc_opcodes): Add new VLE instructions. Update existing instruction to include PPCVLE if supported. * ppc-dis.c (ppc_opts): Add vle entry. (get_powerpc_dialect): New function. (powerpc_init_dialect): VLE support. (print_insn_big_powerpc): Call get_powerpc_dialect. (print_insn_little_powerpc): Likewise. (operand_value_powerpc): Handle negative shift counts. (print_insn_powerpc): Handle 2-byte instruction lengths.
2012-05-14 21:45:30 +02:00
extern bfd_boolean ppc_elf_modify_segment_map (bfd *,
struct bfd_link_info * ATTRIBUTE_UNUSED);
extern bfd_boolean ppc_elf_section_processing (bfd *, Elf_Internal_Shdr *);