/* PowerPC64-specific support for 64-bit ELF.
- Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Written by Linus Nordberg, Swox AB <info@swox.com>,
based on elf32-ppc.c by Ian Lance Taylor.
+ Largely rewritten by Alan Modra <amodra@bigpond.net.au>
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-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 2 of the License, or
-(at your option) any later version.
+ 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.
-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.
+ 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.
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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. */
-/* This file is based on the 64-bit PowerPC ELF ABI. It is also based
- on the file elf32-ppc.c. */
-#include "bfd.h"
+/* The 64-bit PowerPC ELF ABI may be found at
+ http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
+ http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
+
#include "sysdep.h"
+#include <stdarg.h>
+#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
-#include "elf/ppc.h"
-
-#define USE_RELA /* we want RELA relocations, not REL. */
-
-
-static void ppc_howto_init
- PARAMS ((void));
-static reloc_howto_type *ppc64_elf_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void ppc64_elf_info_to_howto
- PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
-static bfd_reloc_status_type ppc64_elf_addr16_ha_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static boolean ppc64_elf_set_private_flags
- PARAMS ((bfd *, flagword));
-static boolean ppc64_elf_copy_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static boolean ppc64_elf_merge_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static boolean ppc64_elf_section_from_shdr
- PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
-static boolean ppc64_elf_create_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean ppc64_elf_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static asection * ppc64_elf_gc_mark_hook
- PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
-static boolean ppc64_elf_gc_sweep_hook
- PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
- const Elf_Internal_Rela *relocs));
-static boolean ppc64_elf_adjust_dynamic_symbol
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static boolean ppc_adjust_dynindx
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean ppc64_elf_size_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean ppc64_elf_final_link
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean ppc64_elf_fake_sections
- PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
-static boolean ppc64_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
- asection **));
-static boolean ppc64_elf_finish_dynamic_symbol
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
-static boolean ppc64_elf_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-
-
-/* Branch prediction bit for branch taken relocs. */
-#define BRANCH_PREDICT_BIT 0x200000
-
-/* Mask to set RA in memory instructions. */
-#define RA_REGISTER_MASK 0x001f0000
-
-/* Value to shift register by to insert RA. */
-#define RA_REGISTER_SHIFT 16
+#include "elf/ppc64.h"
+#include "elf64-ppc.h"
+
+static bfd_reloc_status_type ppc64_elf_ha_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_branch_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_brtaken_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_sectoff_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_toc_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_toc64_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_reloc_status_type ppc64_elf_unhandled_reloc
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
+static bfd_vma opd_entry_value
+ (asection *, bfd_vma, asection **, bfd_vma *);
+
+#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
+#define TARGET_LITTLE_NAME "elf64-powerpcle"
+#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
+#define TARGET_BIG_NAME "elf64-powerpc"
+#define ELF_ARCH bfd_arch_powerpc
+#define ELF_MACHINE_CODE EM_PPC64
+#define ELF_MAXPAGESIZE 0x10000
+#define ELF_COMMONPAGESIZE 0x1000
+#define elf_info_to_howto ppc64_elf_info_to_howto
+
+#define elf_backend_want_got_sym 0
+#define elf_backend_want_plt_sym 0
+#define elf_backend_plt_alignment 3
+#define elf_backend_plt_not_loaded 1
+#define elf_backend_got_header_size 8
+#define elf_backend_can_gc_sections 1
+#define elf_backend_can_refcount 1
+#define elf_backend_rela_normal 1
+#define elf_backend_default_execstack 0
+
+#define bfd_elf64_mkobject ppc64_elf_mkobject
+#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
+#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
+#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
+#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
+#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
+#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
+#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
+
+#define elf_backend_object_p ppc64_elf_object_p
+#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
+#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
+#define elf_backend_write_core_note ppc64_elf_write_core_note
+#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
+#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
+#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
+#define elf_backend_check_directives ppc64_elf_check_directives
+#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
+#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
+#define elf_backend_check_relocs ppc64_elf_check_relocs
+#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
+#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
+#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
+#define elf_backend_hide_symbol ppc64_elf_hide_symbol
+#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
+#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
+#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
+#define elf_backend_action_discarded ppc64_elf_action_discarded
+#define elf_backend_relocate_section ppc64_elf_relocate_section
+#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
+#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
+#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
+#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
+#define elf_backend_special_sections ppc64_elf_special_sections
/* The name of the dynamic interpreter. This is put in the .interp
section. */
#define PLT_ENTRY_SIZE 24
/* The initial size of the plt reserved for the dynamic linker. */
-#define PLT_INITIAL_ENTRY_SIZE 96
+#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
/* TOC base pointers offset from start of TOC. */
-#define TOC_BASE_OFF (0x8000)
-
-/* Global linkage stub. The first instruction has its offset patched. */
-/* FIXME: Need traceback table? */
-static const unsigned int ppc64_elf_glink_code[] = {
- 0xe9820000, /* ld %r12,0(%r2) */
- 0xf8410028, /* std %r2,40(%r1) */
- 0xe80c0000, /* ld %r0,0(%r12) */
- 0xe84c0008, /* ld %r2,8(%r12) */
- 0x7c0903a6, /* mtctr %r0 */
- 0x4e800420 /* bctr */
-};
-
-#define PPC64_ELF_GLINK_SIZE \
- ((sizeof ppc64_elf_glink_code / sizeof ppc64_elf_glink_code[0]) * 4)
+#define TOC_BASE_OFF 0x8000
+
+/* Offset of tp and dtp pointers from start of TLS block. */
+#define TP_OFFSET 0x7000
+#define DTP_OFFSET 0x8000
+
+/* .plt call stub instructions. The normal stub is like this, but
+ sometimes the .plt entry crosses a 64k boundary and we need to
+ insert an addi to adjust r12. */
+#define PLT_CALL_STUB_SIZE (7*4)
+#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
+#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
+#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
+#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
+#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
+ /* ld %r11,xxx+16@l(%r12) */
+#define BCTR 0x4e800420 /* bctr */
+
+
+#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
+#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
+#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
+#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
+
+#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
+#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
+
+#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
+
+/* glink call stub instructions. We enter with the index in R0. */
+#define GLINK_CALL_STUB_SIZE (16*4)
+ /* 0: */
+ /* .quad plt0-1f */
+ /* __glink: */
+#define MFLR_R12 0x7d8802a6 /* mflr %12 */
+#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
+ /* 1: */
+#define MFLR_R11 0x7d6802a6 /* mflr %11 */
+#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
+#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
+#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
+ /* ld %11,0(%12) */
+ /* ld %2,8(%12) */
+ /* mtctr %11 */
+ /* ld %11,16(%12) */
+ /* bctr */
+
+/* Pad with this. */
+#define NOP 0x60000000
+
+/* Some other nops. */
+#define CROR_151515 0x4def7b82
+#define CROR_313131 0x4ffffb82
+
+/* .glink entries for the first 32k functions are two instructions. */
+#define LI_R0_0 0x38000000 /* li %r0,0 */
+#define B_DOT 0x48000000 /* b . */
+
+/* After that, we need two instructions to load the index, followed by
+ a branch. */
+#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
+#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
+
+/* Instructions used by the save and restore reg functions. */
+#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
+#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
+#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
+#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
+#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
+#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
+#define LI_R12_0 0x39800000 /* li %r12,0 */
+#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
+#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
+#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
+#define BLR 0x4e800020 /* blr */
+
+/* Since .opd is an array of descriptors and each entry will end up
+ with identical R_PPC64_RELATIVE relocs, there is really no need to
+ propagate .opd relocs; The dynamic linker should be taught to
+ relocate .opd without reloc entries. */
+#ifndef NO_OPD_RELOCS
+#define NO_OPD_RELOCS 0
+#endif
\f
+#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
+
/* Relocation HOWTO's. */
-static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
+static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
static reloc_howto_type ppc64_elf_howto_raw[] = {
/* This reloc does nothing. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
+ complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_NONE", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A standard 32 bit relocation. */
HOWTO (R_PPC64_ADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* An absolute 26 bit branch; the lower two bits must be zero.
FIXME: we don't check that, we just clear them. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR24", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0x3fffffc, /* dst_mask */
- false), /* pcrel_offset */
+ 0x03fffffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
/* A standard 16 bit relocation. */
HOWTO (R_PPC64_ADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* A 16 bit relocation without overflow. */
HOWTO (R_PPC64_ADDR16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Bits 16-31 of an address. */
HOWTO (R_PPC64_ADDR16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Bits 16-31 of an address, plus 1 if the contents of the low 16
bits, treated as a signed number, is negative. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_ha_reloc, /* special_function */
"R_PPC64_ADDR16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* An absolute 16 bit branch; the lower two bits must be zero.
FIXME: we don't check that, we just clear them. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_branch_reloc, /* special_function */
"R_PPC64_ADDR14", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ 0x0000fffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
/* An absolute 16 bit branch, for which bit 10 should be set to
indicate that the branch is expected to be taken. The lower two
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_brtaken_reloc, /* special_function */
"R_PPC64_ADDR14_BRTAKEN",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ 0x0000fffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
/* An absolute 16 bit branch, for which bit 10 should be set to
indicate that the branch is not expected to be taken. The lower
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_brtaken_reloc, /* special_function */
"R_PPC64_ADDR14_BRNTAKEN",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ 0x0000fffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
/* A relative 26 bit branch; the lower two bits must be zero. */
HOWTO (R_PPC64_REL24, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_branch_reloc, /* special_function */
"R_PPC64_REL24", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
+ 0x03fffffc, /* dst_mask */
+ TRUE), /* pcrel_offset */
/* A relative 16 bit branch; the lower two bits must be zero. */
HOWTO (R_PPC64_REL14, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_branch_reloc, /* special_function */
"R_PPC64_REL14", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xfffc, /* dst_mask */
- true), /* pcrel_offset */
+ 0x0000fffc, /* dst_mask */
+ TRUE), /* pcrel_offset */
/* A relative 16 bit branch. Bit 10 should be set to indicate that
the branch is expected to be taken. The lower two bits must be
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_brtaken_reloc, /* special_function */
"R_PPC64_REL14_BRTAKEN", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xfffc, /* dst_mask */
- true), /* pcrel_offset */
+ 0x0000fffc, /* dst_mask */
+ TRUE), /* pcrel_offset */
/* A relative 16 bit branch. Bit 10 should be set to indicate that
the branch is not expected to be taken. The lower two bits must
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_brtaken_reloc, /* special_function */
"R_PPC64_REL14_BRNTAKEN",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xfffc, /* dst_mask */
- true), /* pcrel_offset */
+ 0x0000fffc, /* dst_mask */
+ TRUE), /* pcrel_offset */
/* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
symbol. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GOT16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
the symbol. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GOT16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
the symbol. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GOT16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
the symbol. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GOT16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* This is used only by the dynamic linker. The symbol should exist
both in the object being run and in some shared library. The
run has to have the data at some particular address. */
HOWTO (R_PPC64_COPY, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
+ 0, /* this one is variable size */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_COPY", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR64, but used when setting global offset table
entries. */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GLOB_DAT", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffffffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
/* Created by the link editor. Marks a procedure linkage table
entry for a symbol. */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_JMP_SLOT", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Used only by the dynamic linker. When the object is run, this
doubleword64 is set to the load address of the object, plus the
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_RELATIVE", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffffffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR32, but may be unaligned. */
HOWTO (R_PPC64_UADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_UADDR32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16, but may be unaligned. */
HOWTO (R_PPC64_UADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_UADDR16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 32-bit PC relative. */
HOWTO (R_PPC64_REL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
- /* FIXME: Verify. Was complain_overflow_bitfield. */
+ /* FIXME: Verify. Was complain_overflow_bitfield. */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_REL32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
- /* 32-bit relocation to the symbol's procedure linkage table.
- FIXME: R_PPC64_PLT32 not supported. */
+ /* 32-bit relocation to the symbol's procedure linkage table. */
HOWTO (R_PPC64_PLT32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLT32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
FIXME: R_PPC64_PLTREL32 not supported. */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_PLTREL32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
the symbol. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLT16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
the symbol. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLT16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
the symbol. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLT16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* 32-bit section relative relocation. */
- /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
- dst_mask=0. */
+ /* 16-bit section relative relocation. */
HOWTO (R_PPC64_SECTOFF, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_sectoff_reloc, /* special_function */
"R_PPC64_SECTOFF", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- /* 16-bit lower half section relative relocation. */
+ /* Like R_PPC64_SECTOFF, but no overflow warning. */
HOWTO (R_PPC64_SECTOFF_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_sectoff_reloc, /* special_function */
"R_PPC64_SECTOFF_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 16-bit upper half section relative relocation. */
HOWTO (R_PPC64_SECTOFF_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_sectoff_reloc, /* special_function */
"R_PPC64_SECTOFF_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 16-bit upper half adjusted section relative relocation. */
HOWTO (R_PPC64_SECTOFF_HA, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_sectoff_ha_reloc, /* special_function */
"R_PPC64_SECTOFF_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* Like R_PPC64_REL24 without touching the two least significant
- bits. */
- /* FIXME: Verify R_PPC64_ADDR30. */
- HOWTO (R_PPC64_ADDR30, /* type */
+ /* Like R_PPC64_REL24 without touching the two least significant bits. */
+ HOWTO (R_PPC64_REL30, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
30, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR30", /* name */
- false, /* partial_inplace */
+ "R_PPC64_REL30", /* name */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffffffc, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR64", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffffffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
/* The bits 32-47 of an address. */
HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
32, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16_HIGHER", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* The bits 32-47 of an address, plus 1 if the contents of the low
16 bits, treated as a signed number, is negative. */
32, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_ha_reloc, /* special_function */
"R_PPC64_ADDR16_HIGHERA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* The bits 48-63 of an address. */
HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
48, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16_HIGHEST", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* The bits 48-63 of an address, plus 1 if the contents of the low
16 bits, treated as a signed number, is negative. */
48, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_ha_reloc, /* special_function */
"R_PPC64_ADDR16_HIGHESTA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like ADDR64, but may be unaligned. */
HOWTO (R_PPC64_UADDR64, /* type */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_UADDR64", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffffffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
/* 64-bit relative relocation. */
HOWTO (R_PPC64_REL64, /* type */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_REL64", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffffffffffff, /* dst_mask */
- true), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ TRUE), /* pcrel_offset */
- /* 64-bit relocation to the symbol's procedure linkage table. */
- /* FIXME: R_PPC64_PLT64 not supported. */
+ /* 64-bit relocation to the symbol's procedure linkage table. */
HOWTO (R_PPC64_PLT64, /* type */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLT64", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
/* 64-bit PC relative relocation to the symbol's procedure linkage
table. */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTREL64", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ TRUE), /* pcrel_offset */
/* 16 bit TOC-relative relocation. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_toc_reloc, /* special_function */
"R_PPC64_TOC16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 16 bit TOC-relative relocation without overflow. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_toc_reloc, /* special_function */
"R_PPC64_TOC16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 16 bit TOC-relative relocation, high 16 bits. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_toc_reloc, /* special_function */
"R_PPC64_TOC16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
contents of the low 16 bits, treated as a signed number, is
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_toc_ha_reloc, /* special_function */
"R_PPC64_TOC16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* 64-bit relocation; insert value of TOC base (.TOC.). */
0, /* rightshift */
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
64, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_toc64_reloc, /* special_function */
"R_PPC64_TOC", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffffffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_GOT16, but also informs the link editor that the
value to relocate may (!) refer to a PLT entry which the link
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTGOT16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_PLTGOT16, but without overflow. */
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTGOT16_LO", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
/* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTGOT16_HI", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1 if the contents of the low 16 bits, treated as a signed number,
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
- ppc64_elf_addr16_ha_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTGOT16_HA", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16, but for instructions with a DS field. */
HOWTO (R_PPC64_ADDR16_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_PPC64_ADDR16_LO_DS",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_GOT16, but for instructions with a DS field. */
HOWTO (R_PPC64_GOT16_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GOT16_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
HOWTO (R_PPC64_GOT16_LO_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_GOT16_LO_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
HOWTO (R_PPC64_PLT16_LO_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLT16_LO_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
- /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
- dst_mask=0. */
HOWTO (R_PPC64_SECTOFF_DS, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_sectoff_reloc, /* special_function */
"R_PPC64_SECTOFF_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_sectoff_reloc, /* special_function */
"R_PPC64_SECTOFF_LO_DS",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_TOC16, but for instructions with a DS field. */
HOWTO (R_PPC64_TOC16_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_toc_reloc, /* special_function */
"R_PPC64_TOC16_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
HOWTO (R_PPC64_TOC16_LO_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_toc_reloc, /* special_function */
"R_PPC64_TOC16_LO_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
/* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
- HOWTO (R_PPC64_PLTGOT16_DS, /* type */
+ HOWTO (R_PPC64_PLTGOT16_DS, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTGOT16_DS", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
/* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ ppc64_elf_unhandled_reloc, /* special_function */
"R_PPC64_PLTGOT16_LO_DS",/* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xfffc, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* GNU extension to record C++ vtable hierarchy. */
- HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
+ /* Marker reloc for TLS. */
+ HOWTO (R_PPC64_TLS,
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_PPC64_GNU_VTINHERIT", /* name */
- false, /* partial_inplace */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC64_TLS", /* name */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage. */
- HOWTO (R_PPC64_GNU_VTENTRY, /* type */
+ /* Computes the load module index of the load module that contains the
+ definition of its TLS sym. */
+ HOWTO (R_PPC64_DTPMOD64,
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
+ 4, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_PPC64_GNU_VTENTRY", /* name */
- false, /* partial_inplace */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPMOD64", /* name */
+ FALSE, /* partial_inplace */
0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
-};
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
-\f
-/* Initialize the ppc64_elf_howto_table, so that linear accesses can
- be done. */
+ /* Computes a dtv-relative displacement, the difference between the value
+ of sym+add and the base address of the thread-local storage block that
+ contains the definition of sym, minus 0x8000. */
+ HOWTO (R_PPC64_DTPREL64,
+ 0, /* rightshift */
+ 4, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL64", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
-static void
-ppc_howto_init ()
-{
- unsigned int i, type;
+ /* A 16 bit dtprel reloc. */
+ HOWTO (R_PPC64_DTPREL16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- for (i = 0;
- i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
- i++)
- {
- type = ppc64_elf_howto_raw[i].type;
- BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
- / sizeof (ppc64_elf_howto_table[0])));
- ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
- }
-}
+ /* Like DTPREL16, but no overflow. */
+ HOWTO (R_PPC64_DTPREL16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
-static reloc_howto_type *
-ppc64_elf_reloc_type_lookup (abfd, code)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
-{
- enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
+ /* Like DTPREL16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_DTPREL16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
- /* Initialize howto table if needed. */
- ppc_howto_init ();
+ /* Like DTPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_DTPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- switch ((int) code)
- {
- default:
- return (reloc_howto_type *) NULL;
+ /* Like DTPREL16_HI, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_DTPREL16_HIGHER,
+ 32, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_HIGHER", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
- break;
- case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
- break;
- case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
- break;
- case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
- break;
- case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
- break;
- case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
- break;
- case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
- break;
- case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
- break;
- case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
- break;
- case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
- break;
- case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
- break;
- case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
- break;
- case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
- break;
- case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
- break;
- case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
- break;
- case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
- break;
- case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
- break;
- case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
- break;
- case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
- break;
- case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
- break;
- case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
- break;
- case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
- break;
- case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
- break;
- case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
- break;
- case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
- break;
- case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
- break;
- case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
- break;
- case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
- break;
- case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
- break;
- case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
- break;
- /* FIXME: Is CTOR 32 or 64 bits? Fix md_apply_fix3 in
- gas/config/tc-ppc.c too. */
- case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR32;
- break;
- case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
- break;
- case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
- break;
- case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
- break;
- case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
- break;
- case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
- break;
- case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
- break;
- case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
- break;
- case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
- break;
- case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
- break;
- case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
- break;
- case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
- break;
- case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
- break;
- case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
- break;
- case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
- break;
- case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
- break;
- case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
- break;
- case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
- break;
- case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
- break;
- case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
- break;
- case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
- break;
- case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
- break;
- case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
- break;
- case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
- break;
- case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
- break;
- case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
- break;
- }
+ /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_DTPREL16_HIGHERA,
+ 32, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_HIGHERA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
- return ppc64_elf_howto_table[(int) ppc_reloc];
-};
+ /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_DTPREL16_HIGHEST,
+ 48, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_HIGHEST", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
-/* Set the howto pointer for a PowerPC ELF reloc. */
+ /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_DTPREL16_HIGHESTA,
+ 48, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_HIGHESTA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like DTPREL16, but for insns with a DS field. */
+ HOWTO (R_PPC64_DTPREL16_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like DTPREL16_DS, but no overflow. */
+ HOWTO (R_PPC64_DTPREL16_LO_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_DTPREL16_LO_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Computes a tp-relative displacement, the difference between the value of
+ sym+add and the value of the thread pointer (r13). */
+ HOWTO (R_PPC64_TPREL64,
+ 0, /* rightshift */
+ 4, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL64", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16 bit tprel reloc. */
+ HOWTO (R_PPC64_TPREL16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16, but no overflow. */
+ HOWTO (R_PPC64_TPREL16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_TPREL16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_TPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_HI, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_TPREL16_HIGHER,
+ 32, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_HIGHER", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_TPREL16_HIGHERA,
+ 32, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_HIGHERA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_TPREL16_HIGHEST,
+ 48, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_HIGHEST", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_TPREL16_HIGHESTA,
+ 48, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_HIGHESTA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16, but for insns with a DS field. */
+ HOWTO (R_PPC64_TPREL16_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like TPREL16_DS, but no overflow. */
+ HOWTO (R_PPC64_TPREL16_LO_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_TPREL16_LO_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
+ with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
+ to the first entry relative to the TOC base (r2). */
+ HOWTO (R_PPC64_GOT_TLSGD16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSGD16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSGD16, but no overflow. */
+ HOWTO (R_PPC64_GOT_TLSGD16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSGD16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_GOT_TLSGD16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSGD16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_GOT_TLSGD16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSGD16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
+ with values (sym+add)@dtpmod and zero, and computes the offset to the
+ first entry relative to the TOC base (r2). */
+ HOWTO (R_PPC64_GOT_TLSLD16,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSLD16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSLD16, but no overflow. */
+ HOWTO (R_PPC64_GOT_TLSLD16_LO,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSLD16_LO", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_GOT_TLSLD16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSLD16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_GOT_TLSLD16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TLSLD16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
+ the offset to the entry relative to the TOC base (r2). */
+ HOWTO (R_PPC64_GOT_DTPREL16_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_DTPREL16_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_DTPREL16_DS, but no overflow. */
+ HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_GOT_DTPREL16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_DTPREL16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_GOT_DTPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_DTPREL16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
+ offset to the entry relative to the TOC base (r2). */
+ HOWTO (R_PPC64_GOT_TPREL16_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TPREL16_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TPREL16_DS, but no overflow. */
+ HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TPREL16_LO_DS", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
+ HOWTO (R_PPC64_GOT_TPREL16_HI,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TPREL16_HI", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
+ HOWTO (R_PPC64_GOT_TPREL16_HA,
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc64_elf_unhandled_reloc, /* special_function */
+ "R_PPC64_GOT_TPREL16_HA", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable hierarchy. */
+ HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_PPC64_GNU_VTINHERIT", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable member usage. */
+ HOWTO (R_PPC64_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_PPC64_GNU_VTENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+};
+
+\f
+/* Initialize the ppc64_elf_howto_table, so that linear accesses can
+ be done. */
+
+static void
+ppc_howto_init (void)
+{
+ unsigned int i, type;
+
+ for (i = 0;
+ i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
+ i++)
+ {
+ type = ppc64_elf_howto_raw[i].type;
+ BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
+ / sizeof (ppc64_elf_howto_table[0])));
+ ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
+ }
+}
+
+static reloc_howto_type *
+ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ enum elf_ppc64_reloc_type r = R_PPC64_NONE;
-static void
-ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf64_Internal_Rela *dst;
-{
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
/* Initialize howto table if needed. */
ppc_howto_init ();
- BFD_ASSERT (ELF64_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
- cache_ptr->howto = ppc64_elf_howto_table[ELF64_R_TYPE (dst->r_info)];
+ switch (code)
+ {
+ default:
+ return NULL;
+
+ case BFD_RELOC_NONE: r = R_PPC64_NONE;
+ break;
+ case BFD_RELOC_32: r = R_PPC64_ADDR32;
+ break;
+ case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
+ break;
+ case BFD_RELOC_16: r = R_PPC64_ADDR16;
+ break;
+ case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
+ break;
+ case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
+ break;
+ case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
+ break;
+ case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
+ break;
+ case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
+ break;
+ case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
+ break;
+ case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
+ break;
+ case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
+ break;
+ case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
+ break;
+ case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
+ break;
+ case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
+ break;
+ case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
+ break;
+ case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
+ break;
+ case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
+ break;
+ case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
+ break;
+ case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
+ break;
+ case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
+ break;
+ case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
+ break;
+ case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
+ break;
+ case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
+ break;
+ case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
+ break;
+ case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
+ break;
+ case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
+ break;
+ case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
+ break;
+ case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
+ break;
+ case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
+ break;
+ case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
+ break;
+ case BFD_RELOC_64: r = R_PPC64_ADDR64;
+ break;
+ case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
+ break;
+ case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
+ break;
+ case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
+ break;
+ case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
+ break;
+ case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
+ break;
+ case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
+ break;
+ case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
+ break;
+ case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
+ break;
+ case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
+ break;
+ case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
+ break;
+ case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
+ break;
+ case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
+ break;
+ case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
+ break;
+ case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
+ break;
+ case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
+ break;
+ case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
+ break;
+ case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
+ break;
+ case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
+ break;
+ case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
+ break;
+ case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
+ break;
+ case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
+ break;
+ case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
+ break;
+ case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
+ break;
+ case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
+ break;
+ case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
+ break;
+ case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
+ break;
+ case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
+ break;
+ case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
+ break;
+ case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
+ break;
+ case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
+ break;
+ case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
+ break;
+ case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
+ break;
+ case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
+ break;
+ case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
+ break;
+ case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
+ break;
+ case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
+ break;
+ case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
+ break;
+ case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
+ break;
+ case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
+ break;
+ case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
+ break;
+ case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
+ break;
+ case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
+ break;
+ case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
+ break;
+ case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
+ break;
+ case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
+ break;
+ case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
+ break;
+ case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
+ break;
+ case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
+ break;
+ case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
+ break;
+ case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
+ break;
+ case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
+ break;
+ case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
+ break;
+ case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
+ break;
+ case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
+ break;
+ case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
+ break;
+ case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
+ break;
+ }
+
+ return ppc64_elf_howto_table[r];
+};
+
+static reloc_howto_type *
+ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
+ i++)
+ if (ppc64_elf_howto_raw[i].name != NULL
+ && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
+ return &ppc64_elf_howto_raw[i];
+
+ return NULL;
+}
+
+/* Set the howto pointer for a PowerPC ELF reloc. */
+
+static void
+ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
+{
+ unsigned int type;
+
+ /* Initialize howto table if needed. */
+ if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
+ ppc_howto_init ();
+
+ type = ELF64_R_TYPE (dst->r_info);
+ if (type >= (sizeof (ppc64_elf_howto_table)
+ / sizeof (ppc64_elf_howto_table[0])))
+ {
+ (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
+ abfd, (int) type);
+ type = R_PPC64_NONE;
+ }
+ cache_ptr->howto = ppc64_elf_howto_table[type];
+}
+
+/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
+
+static bfd_reloc_status_type
+ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ /* Adjust the addend for sign extension of the low 16 bits.
+ We won't actually be using the low 16 bits, so trashing them
+ doesn't matter. */
+ reloc_entry->addend += 0x8000;
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ if (strcmp (symbol->section->name, ".opd") == 0
+ && (symbol->section->owner->flags & DYNAMIC) == 0)
+ {
+ bfd_vma dest = opd_entry_value (symbol->section,
+ symbol->value + reloc_entry->addend,
+ NULL, NULL);
+ if (dest != (bfd_vma) -1)
+ reloc_entry->addend = dest - (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset);
+ }
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ long insn;
+ enum elf_ppc64_reloc_type r_type;
+ bfd_size_type octets;
+ /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
+ bfd_boolean is_power4 = FALSE;
+
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ octets = reloc_entry->address * bfd_octets_per_byte (abfd);
+ insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
+ insn &= ~(0x01 << 21);
+ r_type = reloc_entry->howto->type;
+ if (r_type == R_PPC64_ADDR14_BRTAKEN
+ || r_type == R_PPC64_REL14_BRTAKEN)
+ insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
+
+ if (is_power4)
+ {
+ /* Set 'a' bit. This is 0b00010 in BO field for branch
+ on CR(BI) insns (BO == 001at or 011at), and 0b01000
+ for branch on CTR insns (BO == 1a00t or 1a01t). */
+ if ((insn & (0x14 << 21)) == (0x04 << 21))
+ insn |= 0x02 << 21;
+ else if ((insn & (0x14 << 21)) == (0x10 << 21))
+ insn |= 0x08 << 21;
+ else
+ goto out;
+ }
+ else
+ {
+ bfd_vma target = 0;
+ bfd_vma from;
+
+ if (!bfd_is_com_section (symbol->section))
+ target = symbol->value;
+ target += symbol->section->output_section->vma;
+ target += symbol->section->output_offset;
+ target += reloc_entry->addend;
+
+ from = (reloc_entry->address
+ + input_section->output_offset
+ + input_section->output_section->vma);
+
+ /* Invert 'y' bit if not the default. */
+ if ((bfd_signed_vma) (target - from) < 0)
+ insn ^= 0x01 << 21;
+ }
+ bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
+ out:
+ return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+}
+
+static bfd_reloc_status_type
+ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ /* Subtract the symbol section base address. */
+ reloc_entry->addend -= symbol->section->output_section->vma;
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ /* Subtract the symbol section base address. */
+ reloc_entry->addend -= symbol->section->output_section->vma;
+
+ /* Adjust the addend for sign extension of the low 16 bits. */
+ reloc_entry->addend += 0x8000;
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ bfd_vma TOCstart;
+
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
+ if (TOCstart == 0)
+ TOCstart = ppc64_elf_toc (input_section->output_section->owner);
+
+ /* Subtract the TOC base address. */
+ reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ bfd_vma TOCstart;
+
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
+ if (TOCstart == 0)
+ TOCstart = ppc64_elf_toc (input_section->output_section->owner);
+
+ /* Subtract the TOC base address. */
+ reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
+
+ /* Adjust the addend for sign extension of the low 16 bits. */
+ reloc_entry->addend += 0x8000;
+ return bfd_reloc_continue;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ bfd_vma TOCstart;
+ bfd_size_type octets;
+
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
+ if (TOCstart == 0)
+ TOCstart = ppc64_elf_toc (input_section->output_section->owner);
+
+ octets = reloc_entry->address * bfd_octets_per_byte (abfd);
+ bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
+ return bfd_reloc_ok;
+}
+
+static bfd_reloc_status_type
+ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
+ void *data, asection *input_section,
+ bfd *output_bfd, char **error_message)
+{
+ /* If this is a relocatable link (output_bfd test tells us), just
+ call the generic function. Any adjustment will be done at final
+ link time. */
+ if (output_bfd != NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ if (error_message != NULL)
+ {
+ static char buf[60];
+ sprintf (buf, "generic linker can't handle %s",
+ reloc_entry->howto->name);
+ *error_message = buf;
+ }
+ return bfd_reloc_dangerous;
+}
+
+struct ppc64_elf_obj_tdata
+{
+ struct elf_obj_tdata elf;
+
+ /* Shortcuts to dynamic linker sections. */
+ asection *got;
+ asection *relgot;
+
+ /* Used during garbage collection. We attach global symbols defined
+ on removed .opd entries to this section so that the sym is removed. */
+ asection *deleted_section;
+
+ /* TLS local dynamic got entry handling. Suppose for multiple GOT
+ sections means we potentially need one of these for each input bfd. */
+ union {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } tlsld_got;
+
+ /* A copy of relocs before they are modified for --emit-relocs. */
+ Elf_Internal_Rela *opd_relocs;
+};
+
+#define ppc64_elf_tdata(bfd) \
+ ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
+
+#define ppc64_tlsld_got(bfd) \
+ (&ppc64_elf_tdata (bfd)->tlsld_got)
+
+/* Override the generic function because we store some extras. */
+
+static bfd_boolean
+ppc64_elf_mkobject (bfd *abfd)
+{
+ if (abfd->tdata.any == NULL)
+ {
+ bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
+ abfd->tdata.any = bfd_zalloc (abfd, amt);
+ if (abfd->tdata.any == NULL)
+ return FALSE;
+ }
+ return bfd_elf_mkobject (abfd);
+}
+
+/* Return 1 if target is one of ours. */
+
+static bfd_boolean
+is_ppc64_elf_target (const struct bfd_target *targ)
+{
+ extern const bfd_target bfd_elf64_powerpc_vec;
+ extern const bfd_target bfd_elf64_powerpcle_vec;
+
+ return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
+}
+
+/* Fix bad default arch selected for a 64 bit input bfd when the
+ default is 32 bit. */
+
+static bfd_boolean
+ppc64_elf_object_p (bfd *abfd)
+{
+ if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
+ {
+ Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
+
+ if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
+ {
+ /* Relies on arch after 32 bit default being 64 bit default. */
+ abfd->arch_info = abfd->arch_info->next;
+ BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
+ }
+ }
+ return TRUE;
+}
+
+/* Support for core dump NOTE sections. */
+
+static bfd_boolean
+ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
+{
+ size_t offset, size;
+
+ if (note->descsz != 504)
+ return FALSE;
+
+ /* pr_cursig */
+ elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+
+ /* pr_pid */
+ elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
+
+ /* pr_reg */
+ offset = 112;
+ size = 384;
+
+ /* Make a ".reg/999" section. */
+ return _bfd_elfcore_make_pseudosection (abfd, ".reg",
+ size, note->descpos + offset);
+}
+
+static bfd_boolean
+ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+ if (note->descsz != 136)
+ return FALSE;
+
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
+
+ return TRUE;
+}
+
+static char *
+ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
+ ...)
+{
+ switch (note_type)
+ {
+ default:
+ return NULL;
+
+ case NT_PRPSINFO:
+ {
+ char data[136];
+ va_list ap;
+
+ va_start (ap, note_type);
+ memset (data, 0, 40);
+ strncpy (data + 40, va_arg (ap, const char *), 16);
+ strncpy (data + 56, va_arg (ap, const char *), 80);
+ va_end (ap);
+ return elfcore_write_note (abfd, buf, bufsiz,
+ "CORE", note_type, data, sizeof (data));
+ }
+
+ case NT_PRSTATUS:
+ {
+ char data[504];
+ va_list ap;
+ long pid;
+ int cursig;
+ const void *greg;
+
+ va_start (ap, note_type);
+ memset (data, 0, 112);
+ pid = va_arg (ap, long);
+ bfd_put_32 (abfd, pid, data + 32);
+ cursig = va_arg (ap, int);
+ bfd_put_16 (abfd, cursig, data + 12);
+ greg = va_arg (ap, const void *);
+ memcpy (data + 112, greg, 384);
+ memset (data + 496, 0, 8);
+ va_end (ap);
+ return elfcore_write_note (abfd, buf, bufsiz,
+ "CORE", note_type, data, sizeof (data));
+ }
+ }
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+static bfd_boolean
+ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ /* Check if we have the same endianess. */
+ if (ibfd->xvec->byteorder != obfd->xvec->byteorder
+ && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
+ && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
+ {
+ const char *msg;
+
+ if (bfd_big_endian (ibfd))
+ msg = _("%B: compiled for a big endian system "
+ "and target is little endian");
+ else
+ msg = _("%B: compiled for a little endian system "
+ "and target is big endian");
+
+ (*_bfd_error_handler) (msg, ibfd);
+
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Add extra PPC sections. */
+
+static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
+{
+ { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
+ { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { NULL, 0, 0, 0, 0 }
+};
+
+enum _ppc64_sec_type {
+ sec_normal = 0,
+ sec_opd = 1,
+ sec_toc = 2
+};
+
+struct _ppc64_elf_section_data
+{
+ struct bfd_elf_section_data elf;
+
+ /* An array with one entry for each opd function descriptor. */
+ union
+ {
+ /* Points to the function code section for local opd entries. */
+ asection **opd_func_sec;
+ /* After editing .opd, adjust references to opd local syms. */
+ long *opd_adjust;
+
+ /* An array for toc sections, indexed by offset/8.
+ Specifies the relocation symbol index used at a given toc offset. */
+ unsigned *t_symndx;
+ } u;
+
+ enum _ppc64_sec_type sec_type:2;
+
+ /* Flag set when small branches are detected. Used to
+ select suitable defaults for the stub group size. */
+ unsigned int has_14bit_branch:1;
+};
+
+#define ppc64_elf_section_data(sec) \
+ ((struct _ppc64_elf_section_data *) elf_section_data (sec))
+
+static bfd_boolean
+ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
+{
+ if (!sec->used_by_bfd)
+ {
+ struct _ppc64_elf_section_data *sdata;
+ bfd_size_type amt = sizeof (*sdata);
+
+ sdata = bfd_zalloc (abfd, amt);
+ if (sdata == NULL)
+ return FALSE;
+ sec->used_by_bfd = sdata;
+ }
+
+ return _bfd_elf_new_section_hook (abfd, sec);
+}
+
+static void *
+get_opd_info (asection * sec)
+{
+ if (sec != NULL
+ && ppc64_elf_section_data (sec) != NULL
+ && ppc64_elf_section_data (sec)->sec_type == sec_opd)
+ return ppc64_elf_section_data (sec)->u.opd_adjust;
+ return NULL;
+}
+\f
+/* Parameters for the qsort hook. */
+static asection *synthetic_opd;
+static bfd_boolean synthetic_relocatable;
+
+/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
+
+static int
+compare_symbols (const void *ap, const void *bp)
+{
+ const asymbol *a = * (const asymbol **) ap;
+ const asymbol *b = * (const asymbol **) bp;
+
+ /* Section symbols first. */
+ if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
+ return -1;
+ if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
+ return 1;
+
+ /* then .opd symbols. */
+ if (a->section == synthetic_opd && b->section != synthetic_opd)
+ return -1;
+ if (a->section != synthetic_opd && b->section == synthetic_opd)
+ return 1;
+
+ /* then other code symbols. */
+ if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
+ == (SEC_CODE | SEC_ALLOC)
+ && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
+ != (SEC_CODE | SEC_ALLOC))
+ return -1;
+
+ if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
+ != (SEC_CODE | SEC_ALLOC)
+ && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
+ == (SEC_CODE | SEC_ALLOC))
+ return 1;
+
+ if (synthetic_relocatable)
+ {
+ if (a->section->id < b->section->id)
+ return -1;
+
+ if (a->section->id > b->section->id)
+ return 1;
+ }
+
+ if (a->value + a->section->vma < b->value + b->section->vma)
+ return -1;
+
+ if (a->value + a->section->vma > b->value + b->section->vma)
+ return 1;
+
+ /* For syms with the same value, prefer strong dynamic global function
+ syms over other syms. */
+ if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
+ return -1;
+
+ if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
+ return 1;
+
+ if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
+ return -1;
+
+ if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
+ return 1;
+
+ if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
+ return -1;
+
+ if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
+ return 1;
+
+ if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
+ return -1;
+
+ if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
+ return 1;
+
+ return 0;
+}
+
+/* Search SYMS for a symbol of the given VALUE. */
+
+static asymbol *
+sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
+{
+ long mid;
+
+ if (id == -1)
+ {
+ while (lo < hi)
+ {
+ mid = (lo + hi) >> 1;
+ if (syms[mid]->value + syms[mid]->section->vma < value)
+ lo = mid + 1;
+ else if (syms[mid]->value + syms[mid]->section->vma > value)
+ hi = mid;
+ else
+ return syms[mid];
+ }
+ }
+ else
+ {
+ while (lo < hi)
+ {
+ mid = (lo + hi) >> 1;
+ if (syms[mid]->section->id < id)
+ lo = mid + 1;
+ else if (syms[mid]->section->id > id)
+ hi = mid;
+ else if (syms[mid]->value < value)
+ lo = mid + 1;
+ else if (syms[mid]->value > value)
+ hi = mid;
+ else
+ return syms[mid];
+ }
+ }
+ return NULL;
+}
+
+/* Create synthetic symbols, effectively restoring "dot-symbol" function
+ entry syms. */
+
+static long
+ppc64_elf_get_synthetic_symtab (bfd *abfd,
+ long static_count, asymbol **static_syms,
+ long dyn_count, asymbol **dyn_syms,
+ asymbol **ret)
+{
+ asymbol *s;
+ long i;
+ long count;
+ char *names;
+ long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
+ asection *opd;
+ bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
+ asymbol **syms;
+
+ *ret = NULL;
+
+ opd = bfd_get_section_by_name (abfd, ".opd");
+ if (opd == NULL)
+ return 0;
+
+ symcount = static_count;
+ if (!relocatable)
+ symcount += dyn_count;
+ if (symcount == 0)
+ return 0;
+
+ syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
+ if (syms == NULL)
+ return -1;
+
+ if (!relocatable && static_count != 0 && dyn_count != 0)
+ {
+ /* Use both symbol tables. */
+ memcpy (syms, static_syms, static_count * sizeof (*syms));
+ memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
+ }
+ else if (!relocatable && static_count == 0)
+ memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
+ else
+ memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
+
+ synthetic_opd = opd;
+ synthetic_relocatable = relocatable;
+ qsort (syms, symcount, sizeof (*syms), compare_symbols);
+
+ if (!relocatable && symcount > 1)
+ {
+ long j;
+ /* Trim duplicate syms, since we may have merged the normal and
+ dynamic symbols. Actually, we only care about syms that have
+ different values, so trim any with the same value. */
+ for (i = 1, j = 1; i < symcount; ++i)
+ if (syms[i - 1]->value + syms[i - 1]->section->vma
+ != syms[i]->value + syms[i]->section->vma)
+ syms[j++] = syms[i];
+ symcount = j;
+ }
+
+ i = 0;
+ if (syms[i]->section == opd)
+ ++i;
+ codesecsym = i;
+
+ for (; i < symcount; ++i)
+ if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
+ != (SEC_CODE | SEC_ALLOC))
+ || (syms[i]->flags & BSF_SECTION_SYM) == 0)
+ break;
+ codesecsymend = i;
+
+ for (; i < symcount; ++i)
+ if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
+ break;
+ secsymend = i;
+
+ for (; i < symcount; ++i)
+ if (syms[i]->section != opd)
+ break;
+ opdsymend = i;
+
+ for (; i < symcount; ++i)
+ if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
+ != (SEC_CODE | SEC_ALLOC))
+ break;
+ symcount = i;
+
+ count = 0;
+ if (opdsymend == secsymend)
+ goto done;
+
+ if (relocatable)
+ {
+ bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
+ arelent *r;
+ size_t size;
+ long relcount;
+
+ slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
+ relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
+ if (relcount == 0)
+ goto done;
+
+ if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
+ {
+ count = -1;
+ goto done;
+ }
+
+ size = 0;
+ for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
+ {
+ asymbol *sym;
+
+ while (r < opd->relocation + relcount
+ && r->address < syms[i]->value + opd->vma)
+ ++r;
+
+ if (r == opd->relocation + relcount)
+ break;
+
+ if (r->address != syms[i]->value + opd->vma)
+ continue;
+
+ if (r->howto->type != R_PPC64_ADDR64)
+ continue;
+
+ sym = *r->sym_ptr_ptr;
+ if (!sym_exists_at (syms, opdsymend, symcount,
+ sym->section->id, sym->value + r->addend))
+ {
+ ++count;
+ size += sizeof (asymbol);
+ size += strlen (syms[i]->name) + 2;
+ }
+ }
+
+ s = *ret = bfd_malloc (size);
+ if (s == NULL)
+ {
+ count = -1;
+ goto done;
+ }
+
+ names = (char *) (s + count);
+
+ for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
+ {
+ asymbol *sym;
+
+ while (r < opd->relocation + relcount
+ && r->address < syms[i]->value + opd->vma)
+ ++r;
+
+ if (r == opd->relocation + relcount)
+ break;
+
+ if (r->address != syms[i]->value + opd->vma)
+ continue;
+
+ if (r->howto->type != R_PPC64_ADDR64)
+ continue;
+
+ sym = *r->sym_ptr_ptr;
+ if (!sym_exists_at (syms, opdsymend, symcount,
+ sym->section->id, sym->value + r->addend))
+ {
+ size_t len;
+
+ *s = *syms[i];
+ s->section = sym->section;
+ s->value = sym->value + r->addend;
+ s->name = names;
+ *names++ = '.';
+ len = strlen (syms[i]->name);
+ memcpy (names, syms[i]->name, len + 1);
+ names += len + 1;
+ /* Have udata.p point back to the original symbol this
+ synthetic symbol was derived from. */
+ s->udata.p = syms[i];
+ s++;
+ }
+ }
+ }
+ else
+ {
+ bfd_byte *contents;
+ size_t size;
+
+ if (!bfd_malloc_and_get_section (abfd, opd, &contents))
+ {
+ if (contents)
+ {
+ free_contents_and_exit:
+ free (contents);
+ }
+ count = -1;
+ goto done;
+ }
+
+ size = 0;
+ for (i = secsymend; i < opdsymend; ++i)
+ {
+ bfd_vma ent;
+
+ ent = bfd_get_64 (abfd, contents + syms[i]->value);
+ if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
+ {
+ ++count;
+ size += sizeof (asymbol);
+ size += strlen (syms[i]->name) + 2;
+ }
+ }
+
+ s = *ret = bfd_malloc (size);
+ if (s == NULL)
+ goto free_contents_and_exit;
+
+ names = (char *) (s + count);
+
+ for (i = secsymend; i < opdsymend; ++i)
+ {
+ bfd_vma ent;
+
+ ent = bfd_get_64 (abfd, contents + syms[i]->value);
+ if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
+ {
+ long lo, hi;
+ size_t len;
+ asection *sec = abfd->sections;
+
+ *s = *syms[i];
+ lo = codesecsym;
+ hi = codesecsymend;
+ while (lo < hi)
+ {
+ long mid = (lo + hi) >> 1;
+ if (syms[mid]->section->vma < ent)
+ lo = mid + 1;
+ else if (syms[mid]->section->vma > ent)
+ hi = mid;
+ else
+ {
+ sec = syms[mid]->section;
+ break;
+ }
+ }
+
+ if (lo >= hi && lo > codesecsym)
+ sec = syms[lo - 1]->section;
+
+ for (; sec != NULL; sec = sec->next)
+ {
+ if (sec->vma > ent)
+ break;
+ if ((sec->flags & SEC_ALLOC) == 0
+ || (sec->flags & SEC_LOAD) == 0)
+ break;
+ if ((sec->flags & SEC_CODE) != 0)
+ s->section = sec;
+ }
+ s->value = ent - s->section->vma;
+ s->name = names;
+ *names++ = '.';
+ len = strlen (syms[i]->name);
+ memcpy (names, syms[i]->name, len + 1);
+ names += len + 1;
+ /* Have udata.p point back to the original symbol this
+ synthetic symbol was derived from. */
+ s->udata.p = syms[i];
+ s++;
+ }
+ }
+ free (contents);
+ }
+
+ done:
+ free (syms);
+ return count;
+}
+\f
+/* The following functions are specific to the ELF linker, while
+ functions above are used generally. Those named ppc64_elf_* are
+ called by the main ELF linker code. They appear in this file more
+ or less in the order in which they are called. eg.
+ ppc64_elf_check_relocs is called early in the link process,
+ ppc64_elf_finish_dynamic_sections is one of the last functions
+ called.
+
+ PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
+ functions have both a function code symbol and a function descriptor
+ symbol. A call to foo in a relocatable object file looks like:
+
+ . .text
+ . x:
+ . bl .foo
+ . nop
+
+ The function definition in another object file might be:
+
+ . .section .opd
+ . foo: .quad .foo
+ . .quad .TOC.@tocbase
+ . .quad 0
+ .
+ . .text
+ . .foo: blr
+
+ When the linker resolves the call during a static link, the branch
+ unsurprisingly just goes to .foo and the .opd information is unused.
+ If the function definition is in a shared library, things are a little
+ different: The call goes via a plt call stub, the opd information gets
+ copied to the plt, and the linker patches the nop.
+
+ . x:
+ . bl .foo_stub
+ . ld 2,40(1)
+ .
+ .
+ . .foo_stub:
+ . addis 12,2,Lfoo@toc@ha # in practice, the call stub
+ . addi 12,12,Lfoo@toc@l # is slightly optimized, but
+ . std 2,40(1) # this is the general idea
+ . ld 11,0(12)
+ . ld 2,8(12)
+ . mtctr 11
+ . ld 11,16(12)
+ . bctr
+ .
+ . .section .plt
+ . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
+
+ The "reloc ()" notation is supposed to indicate that the linker emits
+ an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
+ copying.
+
+ What are the difficulties here? Well, firstly, the relocations
+ examined by the linker in check_relocs are against the function code
+ sym .foo, while the dynamic relocation in the plt is emitted against
+ the function descriptor symbol, foo. Somewhere along the line, we need
+ to carefully copy dynamic link information from one symbol to the other.
+ Secondly, the generic part of the elf linker will make .foo a dynamic
+ symbol as is normal for most other backends. We need foo dynamic
+ instead, at least for an application final link. However, when
+ creating a shared library containing foo, we need to have both symbols
+ dynamic so that references to .foo are satisfied during the early
+ stages of linking. Otherwise the linker might decide to pull in a
+ definition from some other object, eg. a static library.
+
+ Update: As of August 2004, we support a new convention. Function
+ calls may use the function descriptor symbol, ie. "bl foo". This
+ behaves exactly as "bl .foo". */
+
+/* The linker needs to keep track of the number of relocs that it
+ decides to copy as dynamic relocs in check_relocs for each symbol.
+ This is so that it can later discard them if they are found to be
+ unnecessary. We store the information in a field extending the
+ regular ELF linker hash table. */
+
+struct ppc_dyn_relocs
+{
+ struct ppc_dyn_relocs *next;
+
+ /* The input section of the reloc. */
+ asection *sec;
+
+ /* Total number of relocs copied for the input section. */
+ bfd_size_type count;
+
+ /* Number of pc-relative relocs copied for the input section. */
+ bfd_size_type pc_count;
+};
+
+/* Track GOT entries needed for a given symbol. We might need more
+ than one got entry per symbol. */
+struct got_entry
+{
+ struct got_entry *next;
+
+ /* The symbol addend that we'll be placing in the GOT. */
+ bfd_vma addend;
+
+ /* Unlike other ELF targets, we use separate GOT entries for the same
+ symbol referenced from different input files. This is to support
+ automatic multiple TOC/GOT sections, where the TOC base can vary
+ from one input file to another. FIXME: After group_sections we
+ ought to merge entries within the group.
+
+ Point to the BFD owning this GOT entry. */
+ bfd *owner;
+
+ /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
+ TLS_TPREL or TLS_DTPREL for tls entries. */
+ char tls_type;
+
+ /* Reference count until size_dynamic_sections, GOT offset thereafter. */
+ union
+ {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } got;
+};
+
+/* The same for PLT. */
+struct plt_entry
+{
+ struct plt_entry *next;
+
+ bfd_vma addend;
+
+ union
+ {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } plt;
+};
+
+/* Of those relocs that might be copied as dynamic relocs, this macro
+ selects those that must be copied when linking a shared library,
+ even when the symbol is local. */
+
+#define MUST_BE_DYN_RELOC(RTYPE) \
+ ((RTYPE) != R_PPC64_REL32 \
+ && (RTYPE) != R_PPC64_REL64 \
+ && (RTYPE) != R_PPC64_REL30)
+
+/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
+ copying dynamic variables from a shared lib into an app's dynbss
+ section, and instead use a dynamic relocation to point into the
+ shared lib. With code that gcc generates, it's vital that this be
+ enabled; In the PowerPC64 ABI, the address of a function is actually
+ the address of a function descriptor, which resides in the .opd
+ section. gcc uses the descriptor directly rather than going via the
+ GOT as some other ABI's do, which means that initialized function
+ pointers must reference the descriptor. Thus, a function pointer
+ initialized to the address of a function in a shared library will
+ either require a copy reloc, or a dynamic reloc. Using a copy reloc
+ redefines the function descriptor symbol to point to the copy. This
+ presents a problem as a plt entry for that function is also
+ initialized from the function descriptor symbol and the copy reloc
+ may not be initialized first. */
+#define ELIMINATE_COPY_RELOCS 1
+
+/* Section name for stubs is the associated section name plus this
+ string. */
+#define STUB_SUFFIX ".stub"
+
+/* Linker stubs.
+ ppc_stub_long_branch:
+ Used when a 14 bit branch (or even a 24 bit branch) can't reach its
+ destination, but a 24 bit branch in a stub section will reach.
+ . b dest
+
+ ppc_stub_plt_branch:
+ Similar to the above, but a 24 bit branch in the stub section won't
+ reach its destination.
+ . addis %r12,%r2,xxx@toc@ha
+ . ld %r11,xxx@toc@l(%r12)
+ . mtctr %r11
+ . bctr
+
+ ppc_stub_plt_call:
+ Used to call a function in a shared library. If it so happens that
+ the plt entry referenced crosses a 64k boundary, then an extra
+ "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
+ . addis %r12,%r2,xxx@toc@ha
+ . std %r2,40(%r1)
+ . ld %r11,xxx+0@toc@l(%r12)
+ . mtctr %r11
+ . ld %r2,xxx+8@toc@l(%r12)
+ . ld %r11,xxx+16@toc@l(%r12)
+ . bctr
+
+ ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
+ code to adjust the value and save r2 to support multiple toc sections.
+ A ppc_stub_long_branch with an r2 offset looks like:
+ . std %r2,40(%r1)
+ . addis %r2,%r2,off@ha
+ . addi %r2,%r2,off@l
+ . b dest
+
+ A ppc_stub_plt_branch with an r2 offset looks like:
+ . std %r2,40(%r1)
+ . addis %r12,%r2,xxx@toc@ha
+ . ld %r11,xxx@toc@l(%r12)
+ . addis %r2,%r2,off@ha
+ . addi %r2,%r2,off@l
+ . mtctr %r11
+ . bctr
+
+ In cases where the "addis" instruction would add zero, the "addis" is
+ omitted and following instructions modified slightly in some cases.
+*/
+
+enum ppc_stub_type {
+ ppc_stub_none,
+ ppc_stub_long_branch,
+ ppc_stub_long_branch_r2off,
+ ppc_stub_plt_branch,
+ ppc_stub_plt_branch_r2off,
+ ppc_stub_plt_call
+};
+
+struct ppc_stub_hash_entry {
+
+ /* Base hash table entry structure. */
+ struct bfd_hash_entry root;
+
+ enum ppc_stub_type stub_type;
+
+ /* The stub section. */
+ asection *stub_sec;
+
+ /* Offset within stub_sec of the beginning of this stub. */
+ bfd_vma stub_offset;
+
+ /* Given the symbol's value and its section we can determine its final
+ value when building the stubs (so the stub knows where to jump. */
+ bfd_vma target_value;
+ asection *target_section;
+
+ /* The symbol table entry, if any, that this was derived from. */
+ struct ppc_link_hash_entry *h;
+
+ /* And the reloc addend that this was derived from. */
+ bfd_vma addend;
+
+ /* Where this stub is being called from, or, in the case of combined
+ stub sections, the first input section in the group. */
+ asection *id_sec;
+};
+
+struct ppc_branch_hash_entry {
+
+ /* Base hash table entry structure. */
+ struct bfd_hash_entry root;
+
+ /* Offset within branch lookup table. */
+ unsigned int offset;
+
+ /* Generation marker. */
+ unsigned int iter;
+};
+
+struct ppc_link_hash_entry
+{
+ struct elf_link_hash_entry elf;
+
+ union {
+ /* A pointer to the most recently used stub hash entry against this
+ symbol. */
+ struct ppc_stub_hash_entry *stub_cache;
+
+ /* A pointer to the next symbol starting with a '.' */
+ struct ppc_link_hash_entry *next_dot_sym;
+ } u;
+
+ /* Track dynamic relocs copied for this symbol. */
+ struct ppc_dyn_relocs *dyn_relocs;
+
+ /* Link between function code and descriptor symbols. */
+ struct ppc_link_hash_entry *oh;
+
+ /* Flag function code and descriptor symbols. */
+ unsigned int is_func:1;
+ unsigned int is_func_descriptor:1;
+ unsigned int fake:1;
+
+ /* Whether global opd/toc sym has been adjusted or not.
+ After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
+ should be set for all globals defined in any opd/toc section. */
+ unsigned int adjust_done:1;
+
+ /* Set if we twiddled this symbol to weak at some stage. */
+ unsigned int was_undefined:1;
+
+ /* Contexts in which symbol is used in the GOT (or TOC).
+ TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
+ corresponding relocs are encountered during check_relocs.
+ tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
+ indicate the corresponding GOT entry type is not needed.
+ tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
+ a TPREL one. We use a separate flag rather than setting TPREL
+ just for convenience in distinguishing the two cases. */
+#define TLS_GD 1 /* GD reloc. */
+#define TLS_LD 2 /* LD reloc. */
+#define TLS_TPREL 4 /* TPREL reloc, => IE. */
+#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
+#define TLS_TLS 16 /* Any TLS reloc. */
+#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
+#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
+ char tls_mask;
+};
+
+/* ppc64 ELF linker hash table. */
+
+struct ppc_link_hash_table
+{
+ struct elf_link_hash_table elf;
+
+ /* The stub hash table. */
+ struct bfd_hash_table stub_hash_table;
+
+ /* Another hash table for plt_branch stubs. */
+ struct bfd_hash_table branch_hash_table;
+
+ /* Linker stub bfd. */
+ bfd *stub_bfd;
+
+ /* Linker call-backs. */
+ asection * (*add_stub_section) (const char *, asection *);
+ void (*layout_sections_again) (void);
+
+ /* Array to keep track of which stub sections have been created, and
+ information on stub grouping. */
+ struct map_stub {
+ /* This is the section to which stubs in the group will be attached. */
+ asection *link_sec;
+ /* The stub section. */
+ asection *stub_sec;
+ /* Along with elf_gp, specifies the TOC pointer used in this group. */
+ bfd_vma toc_off;
+ } *stub_group;
+
+ /* Temp used when calculating TOC pointers. */
+ bfd_vma toc_curr;
+
+ /* Highest input section id. */
+ int top_id;
+
+ /* Highest output section index. */
+ int top_index;
+
+ /* Used when adding symbols. */
+ struct ppc_link_hash_entry *dot_syms;
+
+ /* List of input sections for each output section. */
+ asection **input_list;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *got;
+ asection *plt;
+ asection *relplt;
+ asection *dynbss;
+ asection *relbss;
+ asection *glink;
+ asection *sfpr;
+ asection *brlt;
+ asection *relbrlt;
+
+ /* Shortcut to .__tls_get_addr and __tls_get_addr. */
+ struct ppc_link_hash_entry *tls_get_addr;
+ struct ppc_link_hash_entry *tls_get_addr_fd;
+
+ /* Statistics. */
+ unsigned long stub_count[ppc_stub_plt_call];
+
+ /* Number of stubs against global syms. */
+ unsigned long stub_globals;
+
+ /* Set if we should emit symbols for stubs. */
+ unsigned int emit_stub_syms:1;
+
+ /* Support for multiple toc sections. */
+ unsigned int no_multi_toc:1;
+ unsigned int multi_toc_needed:1;
+
+ /* Set on error. */
+ unsigned int stub_error:1;
+
+ /* Temp used by ppc64_elf_check_directives. */
+ unsigned int twiddled_syms:1;
+
+ /* Incremented every time we size stubs. */
+ unsigned int stub_iteration;
+
+ /* Small local sym to section mapping cache. */
+ struct sym_sec_cache sym_sec;
+};
+
+/* Rename some of the generic section flags to better document how they
+ are used here. */
+#define has_toc_reloc has_gp_reloc
+#define makes_toc_func_call need_finalize_relax
+#define call_check_in_progress reloc_done
+
+/* Get the ppc64 ELF linker hash table from a link_info structure. */
+
+#define ppc_hash_table(p) \
+ ((struct ppc_link_hash_table *) ((p)->hash))
+
+#define ppc_stub_hash_lookup(table, string, create, copy) \
+ ((struct ppc_stub_hash_entry *) \
+ bfd_hash_lookup ((table), (string), (create), (copy)))
+
+#define ppc_branch_hash_lookup(table, string, create, copy) \
+ ((struct ppc_branch_hash_entry *) \
+ bfd_hash_lookup ((table), (string), (create), (copy)))
+
+/* Create an entry in the stub hash table. */
+
+static struct bfd_hash_entry *
+stub_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = bfd_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct ppc_stub_hash_entry *eh;
+
+ /* Initialize the local fields. */
+ eh = (struct ppc_stub_hash_entry *) entry;
+ eh->stub_type = ppc_stub_none;
+ eh->stub_sec = NULL;
+ eh->stub_offset = 0;
+ eh->target_value = 0;
+ eh->target_section = NULL;
+ eh->h = NULL;
+ eh->id_sec = NULL;
+ }
+
+ return entry;
+}
+
+/* Create an entry in the branch hash table. */
+
+static struct bfd_hash_entry *
+branch_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = bfd_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct ppc_branch_hash_entry *eh;
+
+ /* Initialize the local fields. */
+ eh = (struct ppc_branch_hash_entry *) entry;
+ eh->offset = 0;
+ eh->iter = 0;
+ }
+
+ return entry;
+}
+
+/* Create an entry in a ppc64 ELF linker hash table. */
+
+static struct bfd_hash_entry *
+link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = _bfd_elf_link_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
+
+ memset (&eh->u.stub_cache, 0,
+ (sizeof (struct ppc_link_hash_entry)
+ - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
+
+ /* When making function calls, old ABI code references function entry
+ points (dot symbols), while new ABI code references the function
+ descriptor symbol. We need to make any combination of reference and
+ definition work together, without breaking archive linking.
+
+ For a defined function "foo" and an undefined call to "bar":
+ An old object defines "foo" and ".foo", references ".bar" (possibly
+ "bar" too).
+ A new object defines "foo" and references "bar".
+
+ A new object thus has no problem with its undefined symbols being
+ satisfied by definitions in an old object. On the other hand, the
+ old object won't have ".bar" satisfied by a new object.
+
+ Keep a list of newly added dot-symbols. */
+
+ if (string[0] == '.')
+ {
+ struct ppc_link_hash_table *htab;
+
+ htab = (struct ppc_link_hash_table *) table;
+ eh->u.next_dot_sym = htab->dot_syms;
+ htab->dot_syms = eh;
+ }
+ }
+
+ return entry;
+}
+
+/* Create a ppc64 ELF linker hash table. */
+
+static struct bfd_link_hash_table *
+ppc64_elf_link_hash_table_create (bfd *abfd)
+{
+ struct ppc_link_hash_table *htab;
+ bfd_size_type amt = sizeof (struct ppc_link_hash_table);
+
+ htab = bfd_zmalloc (amt);
+ if (htab == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
+ sizeof (struct ppc_link_hash_entry)))
+ {
+ free (htab);
+ return NULL;
+ }
+
+ /* Init the stub hash table too. */
+ if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
+ sizeof (struct ppc_stub_hash_entry)))
+ return NULL;
+
+ /* And the branch hash table. */
+ if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
+ sizeof (struct ppc_branch_hash_entry)))
+ return NULL;
+
+ /* Initializing two fields of the union is just cosmetic. We really
+ only care about glist, but when compiled on a 32-bit host the
+ bfd_vma fields are larger. Setting the bfd_vma to zero makes
+ debugger inspection of these fields look nicer. */
+ htab->elf.init_got_refcount.refcount = 0;
+ htab->elf.init_got_refcount.glist = NULL;
+ htab->elf.init_plt_refcount.refcount = 0;
+ htab->elf.init_plt_refcount.glist = NULL;
+ htab->elf.init_got_offset.offset = 0;
+ htab->elf.init_got_offset.glist = NULL;
+ htab->elf.init_plt_offset.offset = 0;
+ htab->elf.init_plt_offset.glist = NULL;
+
+ return &htab->elf.root;
+}
+
+/* Free the derived linker hash table. */
+
+static void
+ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
+{
+ struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
+
+ bfd_hash_table_free (&ret->stub_hash_table);
+ bfd_hash_table_free (&ret->branch_hash_table);
+ _bfd_generic_link_hash_table_free (hash);
+}
+
+/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
+
+void
+ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+
+ elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
+
+/* Always hook our dynamic sections into the first bfd, which is the
+ linker created stub bfd. This ensures that the GOT header is at
+ the start of the output TOC section. */
+ htab = ppc_hash_table (info);
+ htab->stub_bfd = abfd;
+ htab->elf.dynobj = abfd;
+}
+
+/* Build a name for an entry in the stub hash table. */
+
+static char *
+ppc_stub_name (const asection *input_section,
+ const asection *sym_sec,
+ const struct ppc_link_hash_entry *h,
+ const Elf_Internal_Rela *rel)
+{
+ char *stub_name;
+ bfd_size_type len;
+
+ /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
+ offsets from a sym as a branch target? In fact, we could
+ probably assume the addend is always zero. */
+ BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
+
+ if (h)
+ {
+ len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name == NULL)
+ return stub_name;
+
+ sprintf (stub_name, "%08x.%s+%x",
+ input_section->id & 0xffffffff,
+ h->elf.root.root.string,
+ (int) rel->r_addend & 0xffffffff);
+ }
+ else
+ {
+ len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name == NULL)
+ return stub_name;
+
+ sprintf (stub_name, "%08x.%x:%x+%x",
+ input_section->id & 0xffffffff,
+ sym_sec->id & 0xffffffff,
+ (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
+ (int) rel->r_addend & 0xffffffff);
+ }
+ if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
+ stub_name[len - 2] = 0;
+ return stub_name;
+}
+
+/* Look up an entry in the stub hash. Stub entries are cached because
+ creating the stub name takes a bit of time. */
+
+static struct ppc_stub_hash_entry *
+ppc_get_stub_entry (const asection *input_section,
+ const asection *sym_sec,
+ struct ppc_link_hash_entry *h,
+ const Elf_Internal_Rela *rel,
+ struct ppc_link_hash_table *htab)
+{
+ struct ppc_stub_hash_entry *stub_entry;
+ const asection *id_sec;
+
+ /* If this input section is part of a group of sections sharing one
+ stub section, then use the id of the first section in the group.
+ Stub names need to include a section id, as there may well be
+ more than one stub used to reach say, printf, and we need to
+ distinguish between them. */
+ id_sec = htab->stub_group[input_section->id].link_sec;
+
+ if (h != NULL && h->u.stub_cache != NULL
+ && h->u.stub_cache->h == h
+ && h->u.stub_cache->id_sec == id_sec)
+ {
+ stub_entry = h->u.stub_cache;
+ }
+ else
+ {
+ char *stub_name;
+
+ stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
+ if (stub_name == NULL)
+ return NULL;
+
+ stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
+ stub_name, FALSE, FALSE);
+ if (h != NULL)
+ h->u.stub_cache = stub_entry;
+
+ free (stub_name);
+ }
+
+ return stub_entry;
+}
+
+/* Add a new stub entry to the stub hash. Not all fields of the new
+ stub entry are initialised. */
+
+static struct ppc_stub_hash_entry *
+ppc_add_stub (const char *stub_name,
+ asection *section,
+ struct ppc_link_hash_table *htab)
+{
+ asection *link_sec;
+ asection *stub_sec;
+ struct ppc_stub_hash_entry *stub_entry;
+
+ link_sec = htab->stub_group[section->id].link_sec;
+ stub_sec = htab->stub_group[section->id].stub_sec;
+ if (stub_sec == NULL)
+ {
+ stub_sec = htab->stub_group[link_sec->id].stub_sec;
+ if (stub_sec == NULL)
+ {
+ size_t namelen;
+ bfd_size_type len;
+ char *s_name;
+
+ namelen = strlen (link_sec->name);
+ len = namelen + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (htab->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
+
+ memcpy (s_name, link_sec->name, namelen);
+ memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
+ stub_sec = (*htab->add_stub_section) (s_name, link_sec);
+ if (stub_sec == NULL)
+ return NULL;
+ htab->stub_group[link_sec->id].stub_sec = stub_sec;
+ }
+ htab->stub_group[section->id].stub_sec = stub_sec;
+ }
+
+ /* Enter this entry into the linker stub hash table. */
+ stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ TRUE, FALSE);
+ if (stub_entry == NULL)
+ {
+ (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
+ section->owner, stub_name);
+ return NULL;
+ }
+
+ stub_entry->stub_sec = stub_sec;
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_sec;
+ return stub_entry;
+}
+
+/* Create sections for linker generated code. */
+
+static bfd_boolean
+create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+ flagword flags;
+
+ htab = ppc_hash_table (info);
+
+ /* Create .sfpr for code to save and restore fp regs. */
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
+ | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
+ flags);
+ if (htab->sfpr == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
+ return FALSE;
+
+ /* Create .glink for lazy dynamic linking support. */
+ htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
+ flags);
+ if (htab->glink == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
+ return FALSE;
+
+ /* Create branch lookup table for plt_branch stubs. */
+ flags = (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
+ flags);
+ if (htab->brlt == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
+ return FALSE;
+
+ if (!info->shared)
+ return TRUE;
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
+ | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
+ ".rela.branch_lt",
+ flags);
+ if (!htab->relbrlt
+ || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
+ not already done. */
+
+static bfd_boolean
+create_got_section (bfd *abfd, struct bfd_link_info *info)
+{
+ asection *got, *relgot;
+ flagword flags;
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+
+ if (!htab->got)
+ {
+ if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
+ return FALSE;
+
+ htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
+ if (!htab->got)
+ abort ();
+ }
+
+ flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
+
+ got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
+ if (!got
+ || !bfd_set_section_alignment (abfd, got, 3))
+ return FALSE;
+
+ relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
+ flags | SEC_READONLY);
+ if (!relgot
+ || ! bfd_set_section_alignment (abfd, relgot, 3))
+ return FALSE;
+
+ ppc64_elf_tdata (abfd)->got = got;
+ ppc64_elf_tdata (abfd)->relgot = relgot;
+ return TRUE;
+}
+
+/* Create the dynamic sections, and set up shortcuts. */
+
+static bfd_boolean
+ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+
+ if (!_bfd_elf_create_dynamic_sections (dynobj, info))
+ return FALSE;
+
+ htab = ppc_hash_table (info);
+ if (!htab->got)
+ htab->got = bfd_get_section_by_name (dynobj, ".got");
+ htab->plt = bfd_get_section_by_name (dynobj, ".plt");
+ htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
+ htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
+ if (!info->shared)
+ htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
+
+ if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
+ || (!info->shared && !htab->relbss))
+ abort ();
+
+ return TRUE;
+}
+
+/* Merge PLT info on FROM with that on TO. */
+
+static void
+move_plt_plist (struct ppc_link_hash_entry *from,
+ struct ppc_link_hash_entry *to)
+{
+ if (from->elf.plt.plist != NULL)
+ {
+ if (to->elf.plt.plist != NULL)
+ {
+ struct plt_entry **entp;
+ struct plt_entry *ent;
+
+ for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
+ {
+ struct plt_entry *dent;
+
+ for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
+ if (dent->addend == ent->addend)
+ {
+ dent->plt.refcount += ent->plt.refcount;
+ *entp = ent->next;
+ break;
+ }
+ if (dent == NULL)
+ entp = &ent->next;
+ }
+ *entp = to->elf.plt.plist;
+ }
+
+ to->elf.plt.plist = from->elf.plt.plist;
+ from->elf.plt.plist = NULL;
+ }
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ struct ppc_link_hash_entry *edir, *eind;
+
+ edir = (struct ppc_link_hash_entry *) dir;
+ eind = (struct ppc_link_hash_entry *) ind;
+
+ /* Copy over any dynamic relocs we may have on the indirect sym. */
+ if (eind->dyn_relocs != NULL)
+ {
+ if (edir->dyn_relocs != NULL)
+ {
+ struct ppc_dyn_relocs **pp;
+ struct ppc_dyn_relocs *p;
+
+ /* Add reloc counts against the indirect sym to the direct sym
+ list. Merge any entries against the same section. */
+ for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
+ {
+ struct ppc_dyn_relocs *q;
+
+ for (q = edir->dyn_relocs; q != NULL; q = q->next)
+ if (q->sec == p->sec)
+ {
+ q->pc_count += p->pc_count;
+ q->count += p->count;
+ *pp = p->next;
+ break;
+ }
+ if (q == NULL)
+ pp = &p->next;
+ }
+ *pp = edir->dyn_relocs;
+ }
+
+ edir->dyn_relocs = eind->dyn_relocs;
+ eind->dyn_relocs = NULL;
+ }
+
+ edir->is_func |= eind->is_func;
+ edir->is_func_descriptor |= eind->is_func_descriptor;
+ edir->tls_mask |= eind->tls_mask;
+
+ /* If called to transfer flags for a weakdef during processing
+ of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
+ We clear it ourselves for ELIMINATE_COPY_RELOCS. */
+ if (!(ELIMINATE_COPY_RELOCS
+ && eind->elf.root.type != bfd_link_hash_indirect
+ && edir->elf.dynamic_adjusted))
+ edir->elf.non_got_ref |= eind->elf.non_got_ref;
+
+ edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
+ edir->elf.ref_regular |= eind->elf.ref_regular;
+ edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
+ edir->elf.needs_plt |= eind->elf.needs_plt;
+
+ /* If we were called to copy over info for a weak sym, that's all. */
+ if (eind->elf.root.type != bfd_link_hash_indirect)
+ return;
+
+ /* Copy over got entries that we may have already seen to the
+ symbol which just became indirect. */
+ if (eind->elf.got.glist != NULL)
+ {
+ if (edir->elf.got.glist != NULL)
+ {
+ struct got_entry **entp;
+ struct got_entry *ent;
+
+ for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
+ {
+ struct got_entry *dent;
+
+ for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
+ if (dent->addend == ent->addend
+ && dent->owner == ent->owner
+ && dent->tls_type == ent->tls_type)
+ {
+ dent->got.refcount += ent->got.refcount;
+ *entp = ent->next;
+ break;
+ }
+ if (dent == NULL)
+ entp = &ent->next;
+ }
+ *entp = edir->elf.got.glist;
+ }
+
+ edir->elf.got.glist = eind->elf.got.glist;
+ eind->elf.got.glist = NULL;
+ }
+
+ /* And plt entries. */
+ move_plt_plist (eind, edir);
+
+ if (eind->elf.dynindx != -1)
+ {
+ if (edir->elf.dynindx != -1)
+ _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
+ edir->elf.dynstr_index);
+ edir->elf.dynindx = eind->elf.dynindx;
+ edir->elf.dynstr_index = eind->elf.dynstr_index;
+ eind->elf.dynindx = -1;
+ eind->elf.dynstr_index = 0;
+ }
+}
+
+/* Find the function descriptor hash entry from the given function code
+ hash entry FH. Link the entries via their OH fields. */
+
+static struct ppc_link_hash_entry *
+get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
+{
+ struct ppc_link_hash_entry *fdh = fh->oh;
+
+ if (fdh == NULL)
+ {
+ const char *fd_name = fh->elf.root.root.string + 1;
+
+ fdh = (struct ppc_link_hash_entry *)
+ elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
+ if (fdh != NULL)
+ {
+ fdh->is_func_descriptor = 1;
+ fdh->oh = fh;
+ fh->is_func = 1;
+ fh->oh = fdh;
+ }
+ }
+
+ return fdh;
+}
+
+/* Make a fake function descriptor sym for the code sym FH. */
+
+static struct ppc_link_hash_entry *
+make_fdh (struct bfd_link_info *info,
+ struct ppc_link_hash_entry *fh)
+{
+ bfd *abfd;
+ asymbol *newsym;
+ struct bfd_link_hash_entry *bh;
+ struct ppc_link_hash_entry *fdh;
+
+ abfd = fh->elf.root.u.undef.abfd;
+ newsym = bfd_make_empty_symbol (abfd);
+ newsym->name = fh->elf.root.root.string + 1;
+ newsym->section = bfd_und_section_ptr;
+ newsym->value = 0;
+ newsym->flags = BSF_WEAK;
+
+ bh = NULL;
+ if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
+ newsym->flags, newsym->section,
+ newsym->value, NULL, FALSE, FALSE,
+ &bh))
+ return NULL;
+
+ fdh = (struct ppc_link_hash_entry *) bh;
+ fdh->elf.non_elf = 0;
+ fdh->fake = 1;
+ fdh->is_func_descriptor = 1;
+ fdh->oh = fh;
+ fh->is_func = 1;
+ fh->oh = fdh;
+ return fdh;
+}
+
+/* Fix function descriptor symbols defined in .opd sections to be
+ function type. */
+
+static bfd_boolean
+ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ Elf_Internal_Sym *isym,
+ const char **name ATTRIBUTE_UNUSED,
+ flagword *flags ATTRIBUTE_UNUSED,
+ asection **sec,
+ bfd_vma *value ATTRIBUTE_UNUSED)
+{
+ if (*sec != NULL
+ && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
+ isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
+
+ return TRUE;
+}
+
+/* This function makes an old ABI object reference to ".bar" cause the
+ inclusion of a new ABI object archive that defines "bar".
+ NAME is a symbol defined in an archive. Return a symbol in the hash
+ table that might be satisfied by the archive symbols. */
+
+static struct elf_link_hash_entry *
+ppc64_elf_archive_symbol_lookup (bfd *abfd,
+ struct bfd_link_info *info,
+ const char *name)
+{
+ struct elf_link_hash_entry *h;
+ char *dot_name;
+ size_t len;
+
+ h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
+ if (h != NULL
+ /* Don't return this sym if it is a fake function descriptor
+ created by add_symbol_adjust. */
+ && !(h->root.type == bfd_link_hash_undefweak
+ && ((struct ppc_link_hash_entry *) h)->fake))
+ return h;
+
+ if (name[0] == '.')
+ return h;
+
+ len = strlen (name);
+ dot_name = bfd_alloc (abfd, len + 2);
+ if (dot_name == NULL)
+ return (struct elf_link_hash_entry *) 0 - 1;
+ dot_name[0] = '.';
+ memcpy (dot_name + 1, name, len + 1);
+ h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
+ bfd_release (abfd, dot_name);
+ return h;
+}
+
+/* This function satisfies all old ABI object references to ".bar" if a
+ new ABI object defines "bar". Well, at least, undefined dot symbols
+ are made weak. This stops later archive searches from including an
+ object if we already have a function descriptor definition. It also
+ prevents the linker complaining about undefined symbols.
+ We also check and correct mismatched symbol visibility here. The
+ most restrictive visibility of the function descriptor and the
+ function entry symbol is used. */
+
+static bfd_boolean
+add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+ struct ppc_link_hash_entry *fdh;
+
+ if (eh->elf.root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (eh->elf.root.type == bfd_link_hash_warning)
+ eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
+
+ if (eh->elf.root.root.string[0] != '.')
+ abort ();
+
+ htab = ppc_hash_table (info);
+ fdh = get_fdh (eh, htab);
+ if (fdh == NULL
+ && !info->relocatable
+ && (eh->elf.root.type == bfd_link_hash_undefined
+ || eh->elf.root.type == bfd_link_hash_undefweak)
+ && eh->elf.ref_regular)
+ {
+ /* Make an undefweak function descriptor sym, which is enough to
+ pull in an --as-needed shared lib, but won't cause link
+ errors. Archives are handled elsewhere. */
+ fdh = make_fdh (info, eh);
+ if (fdh == NULL)
+ return FALSE;
+ else
+ fdh->elf.ref_regular = 1;
+ }
+ else if (fdh != NULL)
+ {
+ unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
+ unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
+ if (entry_vis < descr_vis)
+ fdh->elf.other += entry_vis - descr_vis;
+ else if (entry_vis > descr_vis)
+ eh->elf.other += descr_vis - entry_vis;
+
+ if ((fdh->elf.root.type == bfd_link_hash_defined
+ || fdh->elf.root.type == bfd_link_hash_defweak)
+ && eh->elf.root.type == bfd_link_hash_undefined)
+ {
+ eh->elf.root.type = bfd_link_hash_undefweak;
+ eh->was_undefined = 1;
+ htab->twiddled_syms = 1;
+ }
+ }
+
+ return TRUE;
+}
+
+/* Process list of dot-symbols we made in link_hash_newfunc. */
+
+static bfd_boolean
+ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+ struct ppc_link_hash_entry **p, *eh;
+
+ htab = ppc_hash_table (info);
+ if (!is_ppc64_elf_target (htab->elf.root.creator))
+ return TRUE;
+
+ if (is_ppc64_elf_target (ibfd->xvec))
+ {
+ p = &htab->dot_syms;
+ while ((eh = *p) != NULL)
+ {
+ *p = NULL;
+ if (!add_symbol_adjust (eh, info))
+ return FALSE;
+ p = &eh->u.next_dot_sym;
+ }
+ }
+
+ /* Clear the list for non-ppc64 input files. */
+ p = &htab->dot_syms;
+ while ((eh = *p) != NULL)
+ {
+ *p = NULL;
+ p = &eh->u.next_dot_sym;
+ }
+
+ /* We need to fix the undefs list for any syms we have twiddled to
+ undef_weak. */
+ if (htab->twiddled_syms)
+ {
+ bfd_link_repair_undef_list (&htab->elf.root);
+ htab->twiddled_syms = 0;
+ }
+ return TRUE;
+}
+
+/* Undo hash table changes when an --as-needed input file is determined
+ not to be needed. */
+
+static bfd_boolean
+ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ ppc_hash_table (info)->dot_syms = NULL;
+ return TRUE;
+}
+
+static bfd_boolean
+update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
+ unsigned long r_symndx, bfd_vma r_addend, int tls_type)
+{
+ struct got_entry **local_got_ents = elf_local_got_ents (abfd);
+ char *local_got_tls_masks;
+
+ if (local_got_ents == NULL)
+ {
+ bfd_size_type size = symtab_hdr->sh_info;
+
+ size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
+ local_got_ents = bfd_zalloc (abfd, size);
+ if (local_got_ents == NULL)
+ return FALSE;
+ elf_local_got_ents (abfd) = local_got_ents;
+ }
+
+ if ((tls_type & TLS_EXPLICIT) == 0)
+ {
+ struct got_entry *ent;
+
+ for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
+ if (ent->addend == r_addend
+ && ent->owner == abfd
+ && ent->tls_type == tls_type)
+ break;
+ if (ent == NULL)
+ {
+ bfd_size_type amt = sizeof (*ent);
+ ent = bfd_alloc (abfd, amt);
+ if (ent == NULL)
+ return FALSE;
+ ent->next = local_got_ents[r_symndx];
+ ent->addend = r_addend;
+ ent->owner = abfd;
+ ent->tls_type = tls_type;
+ ent->got.refcount = 0;
+ local_got_ents[r_symndx] = ent;
+ }
+ ent->got.refcount += 1;
+ }
+
+ local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
+ local_got_tls_masks[r_symndx] |= tls_type;
+ return TRUE;
+}
+
+static bfd_boolean
+update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
+{
+ struct plt_entry *ent;
+
+ for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
+ if (ent->addend == addend)
+ break;
+ if (ent == NULL)
+ {
+ bfd_size_type amt = sizeof (*ent);
+ ent = bfd_alloc (abfd, amt);
+ if (ent == NULL)
+ return FALSE;
+ ent->next = eh->elf.plt.plist;
+ ent->addend = addend;
+ ent->plt.refcount = 0;
+ eh->elf.plt.plist = ent;
+ }
+ ent->plt.refcount += 1;
+ eh->elf.needs_plt = 1;
+ if (eh->elf.root.root.string[0] == '.'
+ && eh->elf.root.root.string[1] != '\0')
+ eh->is_func = 1;
+ return TRUE;
+}
+
+/* Look through the relocs for a section during the first phase, and
+ calculate needed space in the global offset table, procedure
+ linkage table, and dynamic reloc sections. */
+
+static bfd_boolean
+ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
+{
+ struct ppc_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ asection *sreloc;
+ asection **opd_sym_map;
+
+ if (info->relocatable)
+ return TRUE;
+
+ /* Don't do anything special with non-loaded, non-alloced sections.
+ In particular, any relocs in such sections should not affect GOT
+ and PLT reference counting (ie. we don't allow them to create GOT
+ or PLT entries), there's no possibility or desire to optimize TLS
+ relocs, and there's not much point in propagating relocs to shared
+ libs that the dynamic linker won't relocate. */
+ if ((sec->flags & SEC_ALLOC) == 0)
+ return TRUE;
+
+ htab = ppc_hash_table (info);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ sym_hashes = elf_sym_hashes (abfd);
+ sym_hashes_end = (sym_hashes
+ + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
+ - symtab_hdr->sh_info);
+
+ sreloc = NULL;
+ opd_sym_map = NULL;
+ if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
+ {
+ /* Garbage collection needs some extra help with .opd sections.
+ We don't want to necessarily keep everything referenced by
+ relocs in .opd, as that would keep all functions. Instead,
+ if we reference an .opd symbol (a function descriptor), we
+ want to keep the function code symbol's section. This is
+ easy for global symbols, but for local syms we need to keep
+ information about the associated function section. Later, if
+ edit_opd deletes entries, we'll use this array to adjust
+ local syms in .opd. */
+ union opd_info {
+ asection *func_section;
+ long entry_adjust;
+ };
+ bfd_size_type amt;
+
+ amt = sec->size * sizeof (union opd_info) / 8;
+ opd_sym_map = bfd_zalloc (abfd, amt);
+ if (opd_sym_map == NULL)
+ return FALSE;
+ ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map;
+ BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
+ ppc64_elf_section_data (sec)->sec_type = sec_opd;
+ }
+
+ if (htab->sfpr == NULL
+ && !create_linkage_sections (htab->elf.dynobj, info))
+ return FALSE;
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+ enum elf_ppc64_reloc_type r_type;
+ int tls_type = 0;
+ struct _ppc64_elf_section_data *ppc64_sec;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_PPC64_GOT_TLSLD16:
+ case R_PPC64_GOT_TLSLD16_LO:
+ case R_PPC64_GOT_TLSLD16_HI:
+ case R_PPC64_GOT_TLSLD16_HA:
+ tls_type = TLS_TLS | TLS_LD;
+ goto dogottls;
+
+ case R_PPC64_GOT_TLSGD16:
+ case R_PPC64_GOT_TLSGD16_LO:
+ case R_PPC64_GOT_TLSGD16_HI:
+ case R_PPC64_GOT_TLSGD16_HA:
+ tls_type = TLS_TLS | TLS_GD;
+ goto dogottls;
+
+ case R_PPC64_GOT_TPREL16_DS:
+ case R_PPC64_GOT_TPREL16_LO_DS:
+ case R_PPC64_GOT_TPREL16_HI:
+ case R_PPC64_GOT_TPREL16_HA:
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ tls_type = TLS_TLS | TLS_TPREL;
+ goto dogottls;
+
+ case R_PPC64_GOT_DTPREL16_DS:
+ case R_PPC64_GOT_DTPREL16_LO_DS:
+ case R_PPC64_GOT_DTPREL16_HI:
+ case R_PPC64_GOT_DTPREL16_HA:
+ tls_type = TLS_TLS | TLS_DTPREL;
+ dogottls:
+ sec->has_tls_reloc = 1;
+ /* Fall thru */
+
+ case R_PPC64_GOT16:
+ case R_PPC64_GOT16_DS:
+ case R_PPC64_GOT16_HA:
+ case R_PPC64_GOT16_HI:
+ case R_PPC64_GOT16_LO:
+ case R_PPC64_GOT16_LO_DS:
+ /* This symbol requires a global offset table entry. */
+ sec->has_toc_reloc = 1;
+ if (ppc64_elf_tdata (abfd)->got == NULL
+ && !create_got_section (abfd, info))
+ return FALSE;
+
+ if (h != NULL)
+ {
+ struct ppc_link_hash_entry *eh;
+ struct got_entry *ent;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
+ if (ent->addend == rel->r_addend
+ && ent->owner == abfd
+ && ent->tls_type == tls_type)
+ break;
+ if (ent == NULL)
+ {
+ bfd_size_type amt = sizeof (*ent);
+ ent = bfd_alloc (abfd, amt);
+ if (ent == NULL)
+ return FALSE;
+ ent->next = eh->elf.got.glist;
+ ent->addend = rel->r_addend;
+ ent->owner = abfd;
+ ent->tls_type = tls_type;
+ ent->got.refcount = 0;
+ eh->elf.got.glist = ent;
+ }
+ ent->got.refcount += 1;
+ eh->tls_mask |= tls_type;
+ }
+ else
+ /* This is a global offset table entry for a local symbol. */
+ if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
+ rel->r_addend, tls_type))
+ return FALSE;
+ break;
+
+ case R_PPC64_PLT16_HA:
+ case R_PPC64_PLT16_HI:
+ case R_PPC64_PLT16_LO:
+ case R_PPC64_PLT32:
+ case R_PPC64_PLT64:
+ /* This symbol requires a procedure linkage table entry. We
+ actually build the entry in adjust_dynamic_symbol,
+ because this might be a case of linking PIC code without
+ linking in any dynamic objects, in which case we don't
+ need to generate a procedure linkage table after all. */
+ if (h == NULL)
+ {
+ /* It does not make sense to have a procedure linkage
+ table entry for a local symbol. */
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ else
+ if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
+ rel->r_addend))
+ return FALSE;
+ break;
+
+ /* The following relocations don't need to propagate the
+ relocation if linking a shared object since they are
+ section relative. */
+ case R_PPC64_SECTOFF:
+ case R_PPC64_SECTOFF_LO:
+ case R_PPC64_SECTOFF_HI:
+ case R_PPC64_SECTOFF_HA:
+ case R_PPC64_SECTOFF_DS:
+ case R_PPC64_SECTOFF_LO_DS:
+ case R_PPC64_DTPREL16:
+ case R_PPC64_DTPREL16_LO:
+ case R_PPC64_DTPREL16_HI:
+ case R_PPC64_DTPREL16_HA:
+ case R_PPC64_DTPREL16_DS:
+ case R_PPC64_DTPREL16_LO_DS:
+ case R_PPC64_DTPREL16_HIGHER:
+ case R_PPC64_DTPREL16_HIGHERA:
+ case R_PPC64_DTPREL16_HIGHEST:
+ case R_PPC64_DTPREL16_HIGHESTA:
+ break;
+
+ /* Nor do these. */
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TOC16_HI:
+ case R_PPC64_TOC16_HA:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ sec->has_toc_reloc = 1;
+ break;
+
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_PPC64_GNU_VTINHERIT:
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
+
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ case R_PPC64_GNU_VTENTRY:
+ BFD_ASSERT (h != NULL);
+ if (h != NULL
+ && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
+
+ case R_PPC64_REL14:
+ case R_PPC64_REL14_BRTAKEN:
+ case R_PPC64_REL14_BRNTAKEN:
+ {
+ asection *dest = NULL;
+
+ /* Heuristic: If jumping outside our section, chances are
+ we are going to need a stub. */
+ if (h != NULL)
+ {
+ /* If the sym is weak it may be overridden later, so
+ don't assume we know where a weak sym lives. */
+ if (h->root.type == bfd_link_hash_defined)
+ dest = h->root.u.def.section;
+ }
+ else
+ dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+ sec, r_symndx);
+ if (dest != sec)
+ ppc64_elf_section_data (sec)->has_14bit_branch = 1;
+ }
+ /* Fall through. */
+
+ case R_PPC64_REL24:
+ if (h != NULL)
+ {
+ /* We may need a .plt entry if the function this reloc
+ refers to is in a shared lib. */
+ if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
+ rel->r_addend))
+ return FALSE;
+ if (h == &htab->tls_get_addr->elf
+ || h == &htab->tls_get_addr_fd->elf)
+ sec->has_tls_reloc = 1;
+ else if (htab->tls_get_addr == NULL
+ && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
+ && (h->root.root.string[15] == 0
+ || h->root.root.string[15] == '@'))
+ {
+ htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
+ sec->has_tls_reloc = 1;
+ }
+ else if (htab->tls_get_addr_fd == NULL
+ && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
+ && (h->root.root.string[14] == 0
+ || h->root.root.string[14] == '@'))
+ {
+ htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
+ sec->has_tls_reloc = 1;
+ }
+ }
+ break;
+
+ case R_PPC64_TPREL64:
+ tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ goto dotlstoc;
+
+ case R_PPC64_DTPMOD64:
+ if (rel + 1 < rel_end
+ && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
+ && rel[1].r_offset == rel->r_offset + 8)
+ tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
+ else
+ tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
+ goto dotlstoc;
+
+ case R_PPC64_DTPREL64:
+ tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
+ if (rel != relocs
+ && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
+ && rel[-1].r_offset == rel->r_offset - 8)
+ /* This is the second reloc of a dtpmod, dtprel pair.
+ Don't mark with TLS_DTPREL. */
+ goto dodyn;
+
+ dotlstoc:
+ sec->has_tls_reloc = 1;
+ if (h != NULL)
+ {
+ struct ppc_link_hash_entry *eh;
+ eh = (struct ppc_link_hash_entry *) h;
+ eh->tls_mask |= tls_type;
+ }
+ else
+ if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
+ rel->r_addend, tls_type))
+ return FALSE;
+
+ ppc64_sec = ppc64_elf_section_data (sec);
+ if (ppc64_sec->sec_type != sec_toc)
+ {
+ /* One extra to simplify get_tls_mask. */
+ bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
+ ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
+ if (ppc64_sec->u.t_symndx == NULL)
+ return FALSE;
+ BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
+ ppc64_sec->sec_type = sec_toc;
+ }
+ BFD_ASSERT (rel->r_offset % 8 == 0);
+ ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
+
+ /* Mark the second slot of a GD or LD entry.
+ -1 to indicate GD and -2 to indicate LD. */
+ if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
+ ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
+ else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
+ ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
+ goto dodyn;
+
+ case R_PPC64_TPREL16:
+ case R_PPC64_TPREL16_LO:
+ case R_PPC64_TPREL16_HI:
+ case R_PPC64_TPREL16_HA:
+ case R_PPC64_TPREL16_DS:
+ case R_PPC64_TPREL16_LO_DS:
+ case R_PPC64_TPREL16_HIGHER:
+ case R_PPC64_TPREL16_HIGHERA:
+ case R_PPC64_TPREL16_HIGHEST:
+ case R_PPC64_TPREL16_HIGHESTA:
+ if (info->shared)
+ {
+ info->flags |= DF_STATIC_TLS;
+ goto dodyn;
+ }
+ break;
+
+ case R_PPC64_ADDR64:
+ if (opd_sym_map != NULL
+ && rel + 1 < rel_end
+ && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
+ {
+ if (h != NULL)
+ {
+ if (h->root.root.string[0] == '.'
+ && h->root.root.string[1] != 0
+ && get_fdh ((struct ppc_link_hash_entry *) h, htab))
+ ;
+ else
+ ((struct ppc_link_hash_entry *) h)->is_func = 1;
+ }
+ else
+ {
+ asection *s;
+
+ s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
+ r_symndx);
+ if (s == NULL)
+ return FALSE;
+ else if (s != sec)
+ opd_sym_map[rel->r_offset / 8] = s;
+ }
+ }
+ /* Fall through. */
+
+ case R_PPC64_REL30:
+ case R_PPC64_REL32:
+ case R_PPC64_REL64:
+ case R_PPC64_ADDR14:
+ case R_PPC64_ADDR14_BRNTAKEN:
+ case R_PPC64_ADDR14_BRTAKEN:
+ case R_PPC64_ADDR16:
+ case R_PPC64_ADDR16_DS:
+ case R_PPC64_ADDR16_HA:
+ case R_PPC64_ADDR16_HI:
+ case R_PPC64_ADDR16_HIGHER:
+ case R_PPC64_ADDR16_HIGHERA:
+ case R_PPC64_ADDR16_HIGHEST:
+ case R_PPC64_ADDR16_HIGHESTA:
+ case R_PPC64_ADDR16_LO:
+ case R_PPC64_ADDR16_LO_DS:
+ case R_PPC64_ADDR24:
+ case R_PPC64_ADDR32:
+ case R_PPC64_UADDR16:
+ case R_PPC64_UADDR32:
+ case R_PPC64_UADDR64:
+ case R_PPC64_TOC:
+ if (h != NULL && !info->shared)
+ /* We may need a copy reloc. */
+ h->non_got_ref = 1;
+
+ /* Don't propagate .opd relocs. */
+ if (NO_OPD_RELOCS && opd_sym_map != NULL)
+ break;
+
+ /* If we are creating a shared library, and this is a reloc
+ against a global symbol, or a non PC relative reloc
+ against a local symbol, then we need to copy the reloc
+ into the shared library. However, if we are linking with
+ -Bsymbolic, we do not need to copy a reloc against a
+ global symbol which is defined in an object we are
+ including in the link (i.e., DEF_REGULAR is set). At
+ this point we have not seen all the input files, so it is
+ possible that DEF_REGULAR is not set now but will be set
+ later (it is never cleared). In case of a weak definition,
+ DEF_REGULAR may be cleared later by a strong definition in
+ a shared library. We account for that possibility below by
+ storing information in the dyn_relocs field of the hash
+ table entry. A similar situation occurs when creating
+ shared libraries and symbol visibility changes render the
+ symbol local.
+
+ If on the other hand, we are creating an executable, we
+ may need to keep relocations for symbols satisfied by a
+ dynamic library if we manage to avoid copy relocs for the
+ symbol. */
+ dodyn:
+ if ((info->shared
+ && (MUST_BE_DYN_RELOC (r_type)
+ || (h != NULL
+ && (! info->symbolic
+ || h->root.type == bfd_link_hash_defweak
+ || !h->def_regular))))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && h != NULL
+ && (h->root.type == bfd_link_hash_defweak
+ || !h->def_regular)))
+ {
+ struct ppc_dyn_relocs *p;
+ struct ppc_dyn_relocs **head;
+
+ /* We must copy these reloc types into the output file.
+ Create a reloc section in dynobj and make room for
+ this reloc. */
+ if (sreloc == NULL)
+ {
+ const char *name;
+ bfd *dynobj;
+
+ name = (bfd_elf_string_from_elf_section
+ (abfd,
+ elf_elfheader (abfd)->e_shstrndx,
+ elf_section_data (sec)->rel_hdr.sh_name));
+ if (name == NULL)
+ return FALSE;
+
+ if (! CONST_STRNEQ (name, ".rela")
+ || strcmp (bfd_get_section_name (abfd, sec),
+ name + 5) != 0)
+ {
+ (*_bfd_error_handler)
+ (_("%B: bad relocation section name `%s\'"),
+ abfd, name);
+ bfd_set_error (bfd_error_bad_value);
+ }
+
+ dynobj = htab->elf.dynobj;
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ if (sreloc == NULL)
+ {
+ flagword flags;
+
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED
+ | SEC_ALLOC | SEC_LOAD);
+ sreloc = bfd_make_section_with_flags (dynobj,
+ name,
+ flags);
+ if (sreloc == NULL
+ || ! bfd_set_section_alignment (dynobj, sreloc, 3))
+ return FALSE;
+ }
+ elf_section_data (sec)->sreloc = sreloc;
+ }
+
+ /* If this is a global symbol, we count the number of
+ relocations we need for this symbol. */
+ if (h != NULL)
+ {
+ head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
+ }
+ else
+ {
+ /* Track dynamic relocs needed for local syms too.
+ We really need local syms available to do this
+ easily. Oh well. */
+
+ asection *s;
+ void *vpp;
+
+ s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+ sec, r_symndx);
+ if (s == NULL)
+ return FALSE;
+
+ vpp = &elf_section_data (s)->local_dynrel;
+ head = (struct ppc_dyn_relocs **) vpp;
+ }
+
+ p = *head;
+ if (p == NULL || p->sec != sec)
+ {
+ p = bfd_alloc (htab->elf.dynobj, sizeof *p);
+ if (p == NULL)
+ return FALSE;
+ p->next = *head;
+ *head = p;
+ p->sec = sec;
+ p->count = 0;
+ p->pc_count = 0;
+ }
+
+ p->count += 1;
+ if (!MUST_BE_DYN_RELOC (r_type))
+ p->pc_count += 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
+ of the code entry point, and its section. */
+
+static bfd_vma
+opd_entry_value (asection *opd_sec,
+ bfd_vma offset,
+ asection **code_sec,
+ bfd_vma *code_off)
+{
+ bfd *opd_bfd = opd_sec->owner;
+ Elf_Internal_Rela *relocs;
+ Elf_Internal_Rela *lo, *hi, *look;
+ bfd_vma val;
+
+ /* No relocs implies we are linking a --just-symbols object. */
+ if (opd_sec->reloc_count == 0)
+ {
+ bfd_vma val;
+
+ if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
+ return (bfd_vma) -1;
+
+ if (code_sec != NULL)
+ {
+ asection *sec, *likely = NULL;
+ for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
+ if (sec->vma <= val
+ && (sec->flags & SEC_LOAD) != 0
+ && (sec->flags & SEC_ALLOC) != 0)
+ likely = sec;
+ if (likely != NULL)
+ {
+ *code_sec = likely;
+ if (code_off != NULL)
+ *code_off = val - likely->vma;
+ }
+ }
+ return val;
+ }
+
+ relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
+ if (relocs == NULL)
+ relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
+
+ /* Go find the opd reloc at the sym address. */
+ lo = relocs;
+ BFD_ASSERT (lo != NULL);
+ hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
+ val = (bfd_vma) -1;
+ while (lo < hi)
+ {
+ look = lo + (hi - lo) / 2;
+ if (look->r_offset < offset)
+ lo = look + 1;
+ else if (look->r_offset > offset)
+ hi = look;
+ else
+ {
+ Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
+ if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
+ && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
+ {
+ unsigned long symndx = ELF64_R_SYM (look->r_info);
+ asection *sec;
+
+ if (symndx < symtab_hdr->sh_info)
+ {
+ Elf_Internal_Sym *sym;
+
+ sym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (sym == NULL)
+ {
+ sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
+ symtab_hdr->sh_info,
+ 0, NULL, NULL, NULL);
+ if (sym == NULL)
+ break;
+ symtab_hdr->contents = (bfd_byte *) sym;
+ }
+
+ sym += symndx;
+ val = sym->st_value;
+ sec = NULL;
+ if ((sym->st_shndx != SHN_UNDEF
+ && sym->st_shndx < SHN_LORESERVE)
+ || sym->st_shndx > SHN_HIRESERVE)
+ sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
+ BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
+ }
+ else
+ {
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry *rh;
+
+ sym_hashes = elf_sym_hashes (opd_bfd);
+ rh = sym_hashes[symndx - symtab_hdr->sh_info];
+ while (rh->root.type == bfd_link_hash_indirect
+ || rh->root.type == bfd_link_hash_warning)
+ rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
+ BFD_ASSERT (rh->root.type == bfd_link_hash_defined
+ || rh->root.type == bfd_link_hash_defweak);
+ val = rh->root.u.def.value;
+ sec = rh->root.u.def.section;
+ }
+ val += look->r_addend;
+ if (code_off != NULL)
+ *code_off = val;
+ if (code_sec != NULL)
+ *code_sec = sec;
+ if (sec != NULL && sec->output_section != NULL)
+ val += sec->output_section->vma + sec->output_offset;
+ }
+ break;
+ }
+ }
+
+ return val;
+}
+
+/* Mark sections containing dynamically referenced symbols. When
+ building shared libraries, we must assume that any visible symbol is
+ referenced. */
+
+static bfd_boolean
+ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
+{
+ struct bfd_link_info *info = (struct bfd_link_info *) inf;
+ struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
+
+ if (eh->elf.root.type == bfd_link_hash_warning)
+ eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
+
+ /* Dynamic linking info is on the func descriptor sym. */
+ if (eh->oh != NULL
+ && eh->oh->is_func_descriptor
+ && (eh->oh->elf.root.type == bfd_link_hash_defined
+ || eh->oh->elf.root.type == bfd_link_hash_defweak))
+ eh = eh->oh;
+
+ if ((eh->elf.root.type == bfd_link_hash_defined
+ || eh->elf.root.type == bfd_link_hash_defweak)
+ && (eh->elf.ref_dynamic
+ || (!info->executable
+ && eh->elf.def_regular
+ && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
+ && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
+ {
+ asection *code_sec;
+
+ eh->elf.root.u.def.section->flags |= SEC_KEEP;
+
+ /* Function descriptor syms cause the associated
+ function code sym section to be marked. */
+ if (eh->is_func_descriptor
+ && (eh->oh->elf.root.type == bfd_link_hash_defined
+ || eh->oh->elf.root.type == bfd_link_hash_defweak))
+ eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
+ else if (get_opd_info (eh->elf.root.u.def.section) != NULL
+ && opd_entry_value (eh->elf.root.u.def.section,
+ eh->elf.root.u.def.value,
+ &code_sec, NULL) != (bfd_vma) -1)
+ code_sec->flags |= SEC_KEEP;
+ }
+
+ return TRUE;
+}
+
+/* Return the section that should be marked against GC for a given
+ relocation. */
+
+static asection *
+ppc64_elf_gc_mark_hook (asection *sec,
+ struct bfd_link_info *info,
+ Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
+{
+ asection *rsec;
+
+ /* First mark all our entry sym sections. */
+ if (info->gc_sym_list != NULL)
+ {
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ struct bfd_sym_chain *sym = info->gc_sym_list;
+
+ info->gc_sym_list = NULL;
+ for (; sym != NULL; sym = sym->next)
+ {
+ struct ppc_link_hash_entry *eh;
+
+ eh = (struct ppc_link_hash_entry *)
+ elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
+ if (eh == NULL)
+ continue;
+ if (eh->elf.root.type != bfd_link_hash_defined
+ && eh->elf.root.type != bfd_link_hash_defweak)
+ continue;
+
+ if (eh->is_func_descriptor
+ && (eh->oh->elf.root.type == bfd_link_hash_defined
+ || eh->oh->elf.root.type == bfd_link_hash_defweak))
+ rsec = eh->oh->elf.root.u.def.section;
+ else if (get_opd_info (eh->elf.root.u.def.section) != NULL
+ && opd_entry_value (eh->elf.root.u.def.section,
+ eh->elf.root.u.def.value,
+ &rsec, NULL) != (bfd_vma) -1)
+ ;
+ else
+ continue;
+
+ if (!rsec->gc_mark)
+ _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
+
+ rsec = eh->elf.root.u.def.section;
+ if (!rsec->gc_mark)
+ _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
+ }
+ }
+
+ /* Syms return NULL if we're marking .opd, so we avoid marking all
+ function sections, as all functions are referenced in .opd. */
+ rsec = NULL;
+ if (get_opd_info (sec) != NULL)
+ return rsec;
+
+ if (h != NULL)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ struct ppc_link_hash_entry *eh;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_PPC64_GNU_VTINHERIT:
+ case R_PPC64_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ eh = (struct ppc_link_hash_entry *) h;
+ if (eh->oh != NULL
+ && eh->oh->is_func_descriptor
+ && (eh->oh->elf.root.type == bfd_link_hash_defined
+ || eh->oh->elf.root.type == bfd_link_hash_defweak))
+ eh = eh->oh;
+
+ /* Function descriptor syms cause the associated
+ function code sym section to be marked. */
+ if (eh->is_func_descriptor
+ && (eh->oh->elf.root.type == bfd_link_hash_defined
+ || eh->oh->elf.root.type == bfd_link_hash_defweak))
+ {
+ /* They also mark their opd section. */
+ if (!eh->elf.root.u.def.section->gc_mark)
+ _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
+ ppc64_elf_gc_mark_hook);
+
+ rsec = eh->oh->elf.root.u.def.section;
+ }
+ else if (get_opd_info (eh->elf.root.u.def.section) != NULL
+ && opd_entry_value (eh->elf.root.u.def.section,
+ eh->elf.root.u.def.value,
+ &rsec, NULL) != (bfd_vma) -1)
+ {
+ if (!eh->elf.root.u.def.section->gc_mark)
+ _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
+ ppc64_elf_gc_mark_hook);
+ }
+ else
+ rsec = h->root.u.def.section;
+ break;
+
+ case bfd_link_hash_common:
+ rsec = h->root.u.c.p->section;
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+ else
+ {
+ asection **opd_sym_section;
+
+ rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+ opd_sym_section = get_opd_info (rsec);
+ if (opd_sym_section != NULL)
+ {
+ if (!rsec->gc_mark)
+ _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
+
+ rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
+ }
+ }
+
+ return rsec;
+}
+
+/* Update the .got, .plt. and dynamic reloc reference counts for the
+ section being removed. */
+
+static bfd_boolean
+ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
+{
+ struct ppc_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ struct got_entry **local_got_ents;
+ const Elf_Internal_Rela *rel, *relend;
+
+ if ((sec->flags & SEC_ALLOC) == 0)
+ return TRUE;
+
+ elf_section_data (sec)->local_dynrel = NULL;
+
+ htab = ppc_hash_table (info);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_ents = elf_local_got_ents (abfd);
+
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; rel++)
+ {
+ unsigned long r_symndx;
+ enum elf_ppc64_reloc_type r_type;
+ struct elf_link_hash_entry *h = NULL;
+ char tls_type = 0;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ r_type = ELF64_R_TYPE (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ struct ppc_link_hash_entry *eh;
+ struct ppc_dyn_relocs **pp;
+ struct ppc_dyn_relocs *p;
+
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ eh = (struct ppc_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
+ }
+ }
+
+ switch (r_type)
+ {
+ case R_PPC64_GOT_TLSLD16:
+ case R_PPC64_GOT_TLSLD16_LO:
+ case R_PPC64_GOT_TLSLD16_HI:
+ case R_PPC64_GOT_TLSLD16_HA:
+ tls_type = TLS_TLS | TLS_LD;
+ goto dogot;
+
+ case R_PPC64_GOT_TLSGD16:
+ case R_PPC64_GOT_TLSGD16_LO:
+ case R_PPC64_GOT_TLSGD16_HI:
+ case R_PPC64_GOT_TLSGD16_HA:
+ tls_type = TLS_TLS | TLS_GD;
+ goto dogot;
+
+ case R_PPC64_GOT_TPREL16_DS:
+ case R_PPC64_GOT_TPREL16_LO_DS:
+ case R_PPC64_GOT_TPREL16_HI:
+ case R_PPC64_GOT_TPREL16_HA:
+ tls_type = TLS_TLS | TLS_TPREL;
+ goto dogot;
+
+ case R_PPC64_GOT_DTPREL16_DS:
+ case R_PPC64_GOT_DTPREL16_LO_DS:
+ case R_PPC64_GOT_DTPREL16_HI:
+ case R_PPC64_GOT_DTPREL16_HA:
+ tls_type = TLS_TLS | TLS_DTPREL;
+ goto dogot;
+
+ case R_PPC64_GOT16:
+ case R_PPC64_GOT16_DS:
+ case R_PPC64_GOT16_HA:
+ case R_PPC64_GOT16_HI:
+ case R_PPC64_GOT16_LO:
+ case R_PPC64_GOT16_LO_DS:
+ dogot:
+ {
+ struct got_entry *ent;
+
+ if (h != NULL)
+ ent = h->got.glist;
+ else
+ ent = local_got_ents[r_symndx];
+
+ for (; ent != NULL; ent = ent->next)
+ if (ent->addend == rel->r_addend
+ && ent->owner == abfd
+ && ent->tls_type == tls_type)
+ break;
+ if (ent == NULL)
+ abort ();
+ if (ent->got.refcount > 0)
+ ent->got.refcount -= 1;
+ }
+ break;
+
+ case R_PPC64_PLT16_HA:
+ case R_PPC64_PLT16_HI:
+ case R_PPC64_PLT16_LO:
+ case R_PPC64_PLT32:
+ case R_PPC64_PLT64:
+ case R_PPC64_REL14:
+ case R_PPC64_REL14_BRNTAKEN:
+ case R_PPC64_REL14_BRTAKEN:
+ case R_PPC64_REL24:
+ if (h != NULL)
+ {
+ struct plt_entry *ent;
+
+ for (ent = h->plt.plist; ent != NULL; ent = ent->next)
+ if (ent->addend == rel->r_addend)
+ break;
+ if (ent == NULL)
+ abort ();
+ if (ent->plt.refcount > 0)
+ ent->plt.refcount -= 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+ return TRUE;
+}
+
+/* The maximum size of .sfpr. */
+#define SFPR_MAX (218*4)
+
+struct sfpr_def_parms
+{
+ const char name[12];
+ unsigned char lo, hi;
+ bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
+ bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
+};
+
+/* Auto-generate _save*, _rest* functions in .sfpr. */
+
+static unsigned int
+sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
+{
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ unsigned int i;
+ size_t len = strlen (parm->name);
+ bfd_boolean writing = FALSE;
+ char sym[16];
+
+ memcpy (sym, parm->name, len);
+ sym[len + 2] = 0;
+
+ for (i = parm->lo; i <= parm->hi; i++)
+ {
+ struct elf_link_hash_entry *h;
+
+ sym[len + 0] = i / 10 + '0';
+ sym[len + 1] = i % 10 + '0';
+ h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
+ if (h != NULL
+ && !h->def_regular)
+ {
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = htab->sfpr;
+ h->root.u.def.value = htab->sfpr->size;
+ h->type = STT_FUNC;
+ h->def_regular = 1;
+ _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
+ writing = TRUE;
+ if (htab->sfpr->contents == NULL)
+ {
+ htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
+ if (htab->sfpr->contents == NULL)
+ return FALSE;
+ }
+ }
+ if (writing)
+ {
+ bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
+ if (i != parm->hi)
+ p = (*parm->write_ent) (htab->elf.dynobj, p, i);
+ else
+ p = (*parm->write_tail) (htab->elf.dynobj, p, i);
+ htab->sfpr->size = p - htab->sfpr->contents;
+ }
+ }
+
+ return TRUE;
+}
+
+static bfd_byte *
+savegpr0 (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = savegpr0 (abfd, p, r);
+ bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
+ p = p + 4;
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restgpr0 (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
+ p = p + 4;
+ p = restgpr0 (abfd, p, r);
+ bfd_put_32 (abfd, MTLR_R0, p);
+ p = p + 4;
+ if (r == 29)
+ {
+ p = restgpr0 (abfd, p, 30);
+ p = restgpr0 (abfd, p, 31);
+ }
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savegpr1 (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = savegpr1 (abfd, p, r);
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restgpr1 (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = restgpr1 (abfd, p, r);
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savefpr (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = savefpr (abfd, p, r);
+ bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
+ p = p + 4;
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restfpr (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
+ p = p + 4;
+ p = restfpr (abfd, p, r);
+ bfd_put_32 (abfd, MTLR_R0, p);
+ p = p + 4;
+ if (r == 29)
+ {
+ p = restfpr (abfd, p, 30);
+ p = restfpr (abfd, p, 31);
+ }
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = savefpr (abfd, p, r);
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = restfpr (abfd, p, r);
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+savevr (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
+ p = p + 4;
+ bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
+ return p + 4;
+}
+
+static bfd_byte *
+savevr_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = savevr (abfd, p, r);
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+static bfd_byte *
+restvr (bfd *abfd, bfd_byte *p, int r)
+{
+ bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
+ p = p + 4;
+ bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
+ return p + 4;
+}
+
+static bfd_byte *
+restvr_tail (bfd *abfd, bfd_byte *p, int r)
+{
+ p = restvr (abfd, p, r);
+ bfd_put_32 (abfd, BLR, p);
+ return p + 4;
+}
+
+/* Called via elf_link_hash_traverse to transfer dynamic linking
+ information on function code symbol entries to their corresponding
+ function descriptor symbol entries. */
+
+static bfd_boolean
+func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
+{
+ struct bfd_link_info *info;
+ struct ppc_link_hash_table *htab;
+ struct plt_entry *ent;
+ struct ppc_link_hash_entry *fh;
+ struct ppc_link_hash_entry *fdh;
+ bfd_boolean force_local;
+
+ fh = (struct ppc_link_hash_entry *) h;
+ if (fh->elf.root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (fh->elf.root.type == bfd_link_hash_warning)
+ fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
+
+ info = inf;
+ htab = ppc_hash_table (info);
+
+ /* Resolve undefined references to dot-symbols as the value
+ in the function descriptor, if we have one in a regular object.
+ This is to satisfy cases like ".quad .foo". Calls to functions
+ in dynamic objects are handled elsewhere. */
+ if (fh->elf.root.type == bfd_link_hash_undefweak
+ && fh->was_undefined
+ && (fh->oh->elf.root.type == bfd_link_hash_defined
+ || fh->oh->elf.root.type == bfd_link_hash_defweak)
+ && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
+ && opd_entry_value (fh->oh->elf.root.u.def.section,
+ fh->oh->elf.root.u.def.value,
+ &fh->elf.root.u.def.section,
+ &fh->elf.root.u.def.value) != (bfd_vma) -1)
+ {
+ fh->elf.root.type = fh->oh->elf.root.type;
+ fh->elf.forced_local = 1;
+ fh->elf.def_regular = fh->oh->elf.def_regular;
+ fh->elf.def_dynamic = fh->oh->elf.def_dynamic;
+ }
+
+ /* If this is a function code symbol, transfer dynamic linking
+ information to the function descriptor symbol. */
+ if (!fh->is_func)
+ return TRUE;
+
+ for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
+ if (ent->plt.refcount > 0)
+ break;
+ if (ent == NULL
+ || fh->elf.root.root.string[0] != '.'
+ || fh->elf.root.root.string[1] == '\0')
+ return TRUE;
+
+ /* Find the corresponding function descriptor symbol. Create it
+ as undefined if necessary. */
+
+ fdh = get_fdh (fh, htab);
+ if (fdh != NULL)
+ while (fdh->elf.root.type == bfd_link_hash_indirect
+ || fdh->elf.root.type == bfd_link_hash_warning)
+ fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
+
+ if (fdh == NULL
+ && info->shared
+ && (fh->elf.root.type == bfd_link_hash_undefined
+ || fh->elf.root.type == bfd_link_hash_undefweak))
+ {
+ fdh = make_fdh (info, fh);
+ if (fdh == NULL)
+ return FALSE;
+ }
+
+ /* Fake function descriptors are made undefweak. If the function
+ code symbol is strong undefined, make the fake sym the same.
+ If the function code symbol is defined, then force the fake
+ descriptor local; We can't support overriding of symbols in a
+ shared library on a fake descriptor. */
+
+ if (fdh != NULL
+ && fdh->fake
+ && fdh->elf.root.type == bfd_link_hash_undefweak)
+ {
+ if (fh->elf.root.type == bfd_link_hash_undefined)
+ {
+ fdh->elf.root.type = bfd_link_hash_undefined;
+ bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
+ }
+ else if (fh->elf.root.type == bfd_link_hash_defined
+ || fh->elf.root.type == bfd_link_hash_defweak)
+ {
+ _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
+ }
+ }
+
+ if (fdh != NULL
+ && !fdh->elf.forced_local
+ && (info->shared
+ || fdh->elf.def_dynamic
+ || fdh->elf.ref_dynamic
+ || (fdh->elf.root.type == bfd_link_hash_undefweak
+ && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
+ {
+ if (fdh->elf.dynindx == -1)
+ if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
+ return FALSE;
+ fdh->elf.ref_regular |= fh->elf.ref_regular;
+ fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
+ fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
+ fdh->elf.non_got_ref |= fh->elf.non_got_ref;
+ if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
+ {
+ move_plt_plist (fh, fdh);
+ fdh->elf.needs_plt = 1;
+ }
+ fdh->is_func_descriptor = 1;
+ fdh->oh = fh;
+ fh->oh = fdh;
+ }
+
+ /* Now that the info is on the function descriptor, clear the
+ function code sym info. Any function code syms for which we
+ don't have a definition in a regular file, we force local.
+ This prevents a shared library from exporting syms that have
+ been imported from another library. Function code syms that
+ are really in the library we must leave global to prevent the
+ linker dragging in a definition from a static library. */
+ force_local = (!fh->elf.def_regular
+ || fdh == NULL
+ || !fdh->elf.def_regular
+ || fdh->elf.forced_local);
+ _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
+
+ return TRUE;
+}
+
+/* Called near the start of bfd_elf_size_dynamic_sections. We use
+ this hook to a) provide some gcc support functions, and b) transfer
+ dynamic linking information gathered so far on function code symbol
+ entries, to their corresponding function descriptor symbol entries. */
+
+static bfd_boolean
+ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+ unsigned int i;
+ const struct sfpr_def_parms funcs[] =
+ {
+ { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
+ { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
+ { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
+ { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
+ { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
+ { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
+ { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
+ { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
+ { "._savef", 14, 31, savefpr, savefpr1_tail },
+ { "._restf", 14, 31, restfpr, restfpr1_tail },
+ { "_savevr_", 20, 31, savevr, savevr_tail },
+ { "_restvr_", 20, 31, restvr, restvr_tail }
+ };
+
+ htab = ppc_hash_table (info);
+ if (htab->sfpr == NULL)
+ /* We don't have any relocs. */
+ return TRUE;
+
+ /* Provide any missing _save* and _rest* functions. */
+ htab->sfpr->size = 0;
+ for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
+ if (!sfpr_define (info, &funcs[i]))
+ return FALSE;
+
+ elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
+
+ if (htab->sfpr->size == 0)
+ htab->sfpr->flags |= SEC_EXCLUDE;
+
+ return TRUE;
+}
+
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
+
+static bfd_boolean
+ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
+{
+ struct ppc_link_hash_table *htab;
+ asection *s;
+
+ htab = ppc_hash_table (info);
+
+ /* Deal with function syms. */
+ if (h->type == STT_FUNC
+ || h->needs_plt)
+ {
+ /* Clear procedure linkage table information for any symbol that
+ won't need a .plt entry. */
+ struct plt_entry *ent;
+ for (ent = h->plt.plist; ent != NULL; ent = ent->next)
+ if (ent->plt.refcount > 0)
+ break;
+ if (ent == NULL
+ || SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))
+ {
+ h->plt.plist = NULL;
+ h->needs_plt = 0;
+ }
+ }
+ else
+ h->plt.plist = NULL;
+
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->u.weakdef != NULL)
+ {
+ BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+ || h->u.weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->u.weakdef->root.u.def.section;
+ h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ if (ELIMINATE_COPY_RELOCS)
+ h->non_got_ref = h->u.weakdef->non_got_ref;
+ return TRUE;
+ }
+
+ /* If we are creating a shared library, we must presume that the
+ only references to the symbol are via the global offset table.
+ For such cases we need not do anything here; the relocations will
+ be handled correctly by relocate_section. */
+ if (info->shared)
+ return TRUE;
+
+ /* If there are no references to this symbol that do not use the
+ GOT, we don't need to generate a copy reloc. */
+ if (!h->non_got_ref)
+ return TRUE;
+
+ /* Don't generate a copy reloc for symbols defined in the executable. */
+ if (!h->def_dynamic || !h->ref_regular || h->def_regular)
+ return TRUE;
+
+ if (ELIMINATE_COPY_RELOCS)
+ {
+ struct ppc_link_hash_entry * eh;
+ struct ppc_dyn_relocs *p;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ s = p->sec->output_section;
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ break;
+ }
+
+ /* If we didn't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ if (p == NULL)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+ }
+
+ if (h->plt.plist != NULL)
+ {
+ /* We should never get here, but unfortunately there are versions
+ of gcc out there that improperly (for this ABI) put initialized
+ function pointers, vtable refs and suchlike in read-only
+ sections. Allow them to proceed, but warn that this might
+ break at runtime. */
+ (*_bfd_error_handler)
+ (_("copy reloc against `%s' requires lazy plt linking; "
+ "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
+ h->root.root.string);
+ }
+
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. */
+
+ if (h->size == 0)
+ {
+ (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
+ h->root.root.string);
+ return TRUE;
+ }
+
+ /* We must allocate the symbol in our .dynbss section, which will
+ become part of the .bss section of the executable. There will be
+ an entry for this symbol in the .dynsym section. The dynamic
+ object will contain position independent code, so all references
+ from the dynamic object to this symbol will go through the global
+ offset table. The dynamic linker will use the .dynsym entry to
+ determine the address it must put in the global offset table, so
+ both the dynamic object and the regular object will refer to the
+ same memory location for the variable. */
+
+ /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
+ to copy the initial value out of the dynamic object and into the
+ runtime process image. We need to remember the offset into the
+ .rela.bss section we are going to use. */
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ {
+ htab->relbss->size += sizeof (Elf64_External_Rela);
+ h->needs_copy = 1;
+ }
+
+ s = htab->dynbss;
+
+ return _bfd_elf_adjust_dynamic_copy (h, s);
+}
+
+/* If given a function descriptor symbol, hide both the function code
+ sym and the descriptor. */
+static void
+ppc64_elf_hide_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ bfd_boolean force_local)
+{
+ struct ppc_link_hash_entry *eh;
+ _bfd_elf_link_hash_hide_symbol (info, h, force_local);
+
+ eh = (struct ppc_link_hash_entry *) h;
+ if (eh->is_func_descriptor)
+ {
+ struct ppc_link_hash_entry *fh = eh->oh;
+
+ if (fh == NULL)
+ {
+ const char *p, *q;
+ struct ppc_link_hash_table *htab;
+ char save;
+
+ /* We aren't supposed to use alloca in BFD because on
+ systems which do not have alloca the version in libiberty
+ calls xmalloc, which might cause the program to crash
+ when it runs out of memory. This function doesn't have a
+ return status, so there's no way to gracefully return an
+ error. So cheat. We know that string[-1] can be safely
+ accessed; It's either a string in an ELF string table,
+ or allocated in an objalloc structure. */
+
+ p = eh->elf.root.root.string - 1;
+ save = *p;
+ *(char *) p = '.';
+ htab = ppc_hash_table (info);
+ fh = (struct ppc_link_hash_entry *)
+ elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
+ *(char *) p = save;
+
+ /* Unfortunately, if it so happens that the string we were
+ looking for was allocated immediately before this string,
+ then we overwrote the string terminator. That's the only
+ reason the lookup should fail. */
+ if (fh == NULL)
+ {
+ q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
+ while (q >= eh->elf.root.root.string && *q == *p)
+ --q, --p;
+ if (q < eh->elf.root.root.string && *p == '.')
+ fh = (struct ppc_link_hash_entry *)
+ elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
+ }
+ if (fh != NULL)
+ {
+ eh->oh = fh;
+ fh->oh = eh;
+ }
+ }
+ if (fh != NULL)
+ _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
+ }
+}
+
+static bfd_boolean
+get_sym_h (struct elf_link_hash_entry **hp,
+ Elf_Internal_Sym **symp,
+ asection **symsecp,
+ char **tls_maskp,
+ Elf_Internal_Sym **locsymsp,
+ unsigned long r_symndx,
+ bfd *ibfd)
+{
+ Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
+ struct elf_link_hash_entry *h;
+
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ if (hp != NULL)
+ *hp = h;
+
+ if (symp != NULL)
+ *symp = NULL;
+
+ if (symsecp != NULL)
+ {
+ asection *symsec = NULL;
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ symsec = h->root.u.def.section;
+ *symsecp = symsec;
+ }
+
+ if (tls_maskp != NULL)
+ {
+ struct ppc_link_hash_entry *eh;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ *tls_maskp = &eh->tls_mask;
+ }
+ }
+ else
+ {
+ Elf_Internal_Sym *sym;
+ Elf_Internal_Sym *locsyms = *locsymsp;
+
+ if (locsyms == NULL)
+ {
+ locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (locsyms == NULL)
+ locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
+ symtab_hdr->sh_info,
+ 0, NULL, NULL, NULL);
+ if (locsyms == NULL)
+ return FALSE;
+ *locsymsp = locsyms;
+ }
+ sym = locsyms + r_symndx;
+
+ if (hp != NULL)
+ *hp = NULL;
+
+ if (symp != NULL)
+ *symp = sym;
+
+ if (symsecp != NULL)
+ {
+ asection *symsec = NULL;
+ if ((sym->st_shndx != SHN_UNDEF
+ && sym->st_shndx < SHN_LORESERVE)
+ || sym->st_shndx > SHN_HIRESERVE)
+ symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
+ *symsecp = symsec;
+ }
+
+ if (tls_maskp != NULL)
+ {
+ struct got_entry **lgot_ents;
+ char *tls_mask;
+
+ tls_mask = NULL;
+ lgot_ents = elf_local_got_ents (ibfd);
+ if (lgot_ents != NULL)
+ {
+ char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
+ tls_mask = &lgot_masks[r_symndx];
+ }
+ *tls_maskp = tls_mask;
+ }
+ }
+ return TRUE;
+}
+
+/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
+ error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
+ type suitable for optimization, and 1 otherwise. */
+
+static int
+get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
+ Elf_Internal_Sym **locsymsp,
+ const Elf_Internal_Rela *rel, bfd *ibfd)
+{
+ unsigned long r_symndx;
+ int next_r;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ bfd_vma off;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
+ return 0;
+
+ if ((*tls_maskp != NULL && **tls_maskp != 0)
+ || sec == NULL
+ || ppc64_elf_section_data (sec)->sec_type != sec_toc)
+ return 1;
+
+ /* Look inside a TOC section too. */
+ if (h != NULL)
+ {
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined);
+ off = h->root.u.def.value;
+ }
+ else
+ off = sym->st_value;
+ off += rel->r_addend;
+ BFD_ASSERT (off % 8 == 0);
+ r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
+ next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
+ if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
+ return 0;
+ if (toc_symndx != NULL)
+ *toc_symndx = r_symndx;
+ if ((h == NULL
+ || ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && !h->def_dynamic))
+ && (next_r == -1 || next_r == -2))
+ return 1 - next_r;
+ return 1;
+}
+
+/* Adjust all global syms defined in opd sections. In gcc generated
+ code for the old ABI, these will already have been done. */
+
+static bfd_boolean
+adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
+{
+ struct ppc_link_hash_entry *eh;
+ asection *sym_sec;
+ long *opd_adjust;
+
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ return TRUE;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ if (eh->adjust_done)
+ return TRUE;
+
+ sym_sec = eh->elf.root.u.def.section;
+ opd_adjust = get_opd_info (sym_sec);
+ if (opd_adjust != NULL)
+ {
+ long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
+ if (adjust == -1)
+ {
+ /* This entry has been deleted. */
+ asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
+ if (dsec == NULL)
+ {
+ for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
+ if (elf_discarded_section (dsec))
+ {
+ ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
+ break;
+ }
+ }
+ eh->elf.root.u.def.value = 0;
+ eh->elf.root.u.def.section = dsec;
+ }
+ else
+ eh->elf.root.u.def.value += adjust;
+ eh->adjust_done = 1;
+ }
+ return TRUE;
+}
+
+/* Handles decrementing dynamic reloc counts for the reloc specified by
+ R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
+ have already been determined. */
+
+static bfd_boolean
+dec_dynrel_count (bfd_vma r_info,
+ asection *sec,
+ struct bfd_link_info *info,
+ Elf_Internal_Sym **local_syms,
+ struct elf_link_hash_entry *h,
+ asection *sym_sec)
+{
+ enum elf_ppc64_reloc_type r_type;
+ struct ppc_dyn_relocs *p;
+ struct ppc_dyn_relocs **pp;
+
+ /* Can this reloc be dynamic? This switch, and later tests here
+ should be kept in sync with the code in check_relocs. */
+ r_type = ELF64_R_TYPE (r_info);
+ switch (r_type)
+ {
+ default:
+ return TRUE;
+
+ case R_PPC64_TPREL16:
+ case R_PPC64_TPREL16_LO:
+ case R_PPC64_TPREL16_HI:
+ case R_PPC64_TPREL16_HA:
+ case R_PPC64_TPREL16_DS:
+ case R_PPC64_TPREL16_LO_DS:
+ case R_PPC64_TPREL16_HIGHER:
+ case R_PPC64_TPREL16_HIGHERA:
+ case R_PPC64_TPREL16_HIGHEST:
+ case R_PPC64_TPREL16_HIGHESTA:
+ if (!info->shared)
+ return TRUE;
+
+ case R_PPC64_TPREL64:
+ case R_PPC64_DTPMOD64:
+ case R_PPC64_DTPREL64:
+ case R_PPC64_ADDR64:
+ case R_PPC64_REL30:
+ case R_PPC64_REL32:
+ case R_PPC64_REL64:
+ case R_PPC64_ADDR14:
+ case R_PPC64_ADDR14_BRNTAKEN:
+ case R_PPC64_ADDR14_BRTAKEN:
+ case R_PPC64_ADDR16:
+ case R_PPC64_ADDR16_DS:
+ case R_PPC64_ADDR16_HA:
+ case R_PPC64_ADDR16_HI:
+ case R_PPC64_ADDR16_HIGHER:
+ case R_PPC64_ADDR16_HIGHERA:
+ case R_PPC64_ADDR16_HIGHEST:
+ case R_PPC64_ADDR16_HIGHESTA:
+ case R_PPC64_ADDR16_LO:
+ case R_PPC64_ADDR16_LO_DS:
+ case R_PPC64_ADDR24:
+ case R_PPC64_ADDR32:
+ case R_PPC64_UADDR16:
+ case R_PPC64_UADDR32:
+ case R_PPC64_UADDR64:
+ case R_PPC64_TOC:
+ break;
+ }
+
+ if (local_syms != NULL)
+ {
+ unsigned long r_symndx;
+ Elf_Internal_Sym *sym;
+ bfd *ibfd = sec->owner;
+
+ r_symndx = ELF64_R_SYM (r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
+ return FALSE;
+ }
+
+ if ((info->shared
+ && (MUST_BE_DYN_RELOC (r_type)
+ || (h != NULL
+ && (!info->symbolic
+ || h->root.type == bfd_link_hash_defweak
+ || !h->def_regular))))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && h != NULL
+ && (h->root.type == bfd_link_hash_defweak
+ || !h->def_regular)))
+ ;
+ else
+ return TRUE;
+
+ if (h != NULL)
+ pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
+ else
+ {
+ if (sym_sec != NULL)
+ {
+ void *vpp = &elf_section_data (sym_sec)->local_dynrel;
+ pp = (struct ppc_dyn_relocs **) vpp;
+ }
+ else
+ {
+ void *vpp = &elf_section_data (sec)->local_dynrel;
+ pp = (struct ppc_dyn_relocs **) vpp;
+ }
+
+ /* elf_gc_sweep may have already removed all dyn relocs associated
+ with local syms for a given section. Don't report a dynreloc
+ miscount. */
+ if (*pp == NULL)
+ return TRUE;
+ }
+
+ while ((p = *pp) != NULL)
+ {
+ if (p->sec == sec)
+ {
+ if (!MUST_BE_DYN_RELOC (r_type))
+ p->pc_count -= 1;
+ p->count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ return TRUE;
+ }
+ pp = &p->next;
+ }
+
+ (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
+ sec->owner, sec);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+}
+
+/* Remove unused Official Procedure Descriptor entries. Currently we
+ only remove those associated with functions in discarded link-once
+ sections, or weakly defined functions that have been overridden. It
+ would be possible to remove many more entries for statically linked
+ applications. */
+
+bfd_boolean
+ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
+ bfd_boolean no_opd_opt,
+ bfd_boolean non_overlapping)
+{
+ bfd *ibfd;
+ bfd_boolean some_edited = FALSE;
+ asection *need_pad = NULL;
+
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ asection *sec;
+ Elf_Internal_Rela *relstart, *rel, *relend;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Sym *local_syms;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_vma offset;
+ bfd_size_type amt;
+ long *opd_adjust;
+ bfd_boolean need_edit, add_aux_fields;
+ bfd_size_type cnt_16b = 0;
+
+ sec = bfd_get_section_by_name (ibfd, ".opd");
+ if (sec == NULL || sec->size == 0)
+ continue;
+
+ amt = sec->size * sizeof (long) / 8;
+ opd_adjust = get_opd_info (sec);
+ if (opd_adjust == NULL)
+ {
+ /* check_relocs hasn't been called. Must be a ld -r link
+ or --just-symbols object. */
+ opd_adjust = bfd_alloc (obfd, amt);
+ if (opd_adjust == NULL)
+ return FALSE;
+ ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust;
+ BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
+ ppc64_elf_section_data (sec)->sec_type = sec_opd;
+ }
+ memset (opd_adjust, 0, amt);
+
+ if (no_opd_opt)
+ continue;
+
+ if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
+ continue;
+
+ if (sec->output_section == bfd_abs_section_ptr)
+ continue;
+
+ /* Look through the section relocs. */
+ if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
+ continue;
+
+ local_syms = NULL;
+ symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (ibfd);
+
+ /* Read the relocations. */
+ relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
+ info->keep_memory);
+ if (relstart == NULL)
+ return FALSE;
+
+ /* First run through the relocs to check they are sane, and to
+ determine whether we need to edit this opd section. */
+ need_edit = FALSE;
+ need_pad = sec;
+ offset = 0;
+ relend = relstart + sec->reloc_count;
+ for (rel = relstart; rel < relend; )
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned long r_symndx;
+ asection *sym_sec;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+
+ /* .opd contains a regular array of 16 or 24 byte entries. We're
+ only interested in the reloc pointing to a function entry
+ point. */
+ if (rel->r_offset != offset
+ || rel + 1 >= relend
+ || (rel + 1)->r_offset != offset + 8)
+ {
+ /* If someone messes with .opd alignment then after a
+ "ld -r" we might have padding in the middle of .opd.
+ Also, there's nothing to prevent someone putting
+ something silly in .opd with the assembler. No .opd
+ optimization for them! */
+ broken_opd:
+ (*_bfd_error_handler)
+ (_("%B: .opd is not a regular array of opd entries"), ibfd);
+ need_edit = FALSE;
+ break;
+ }
+
+ if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
+ || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
+ {
+ (*_bfd_error_handler)
+ (_("%B: unexpected reloc type %u in .opd section"),
+ ibfd, r_type);
+ need_edit = FALSE;
+ break;
+ }
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_symndx, ibfd))
+ goto error_ret;
+
+ if (sym_sec == NULL || sym_sec->owner == NULL)
+ {
+ const char *sym_name;
+ if (h != NULL)
+ sym_name = h->root.root.string;
+ else
+ sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
+ sym_sec);
+
+ (*_bfd_error_handler)
+ (_("%B: undefined sym `%s' in .opd section"),
+ ibfd, sym_name);
+ need_edit = FALSE;
+ break;
+ }
+
+ /* opd entries are always for functions defined in the
+ current input bfd. If the symbol isn't defined in the
+ input bfd, then we won't be using the function in this
+ bfd; It must be defined in a linkonce section in another
+ bfd, or is weak. It's also possible that we are
+ discarding the function due to a linker script /DISCARD/,
+ which we test for via the output_section. */
+ if (sym_sec->owner != ibfd
+ || sym_sec->output_section == bfd_abs_section_ptr)
+ need_edit = TRUE;
+
+ rel += 2;
+ if (rel == relend
+ || (rel + 1 == relend && rel->r_offset == offset + 16))
+ {
+ if (sec->size == offset + 24)
+ {
+ need_pad = NULL;
+ break;
+ }
+ if (rel == relend && sec->size == offset + 16)
+ {
+ cnt_16b++;
+ break;
+ }
+ goto broken_opd;
+ }
+
+ if (rel->r_offset == offset + 24)
+ offset += 24;
+ else if (rel->r_offset != offset + 16)
+ goto broken_opd;
+ else if (rel + 1 < relend
+ && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
+ && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
+ {
+ offset += 16;
+ cnt_16b++;
+ }
+ else if (rel + 2 < relend
+ && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
+ && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
+ {
+ offset += 24;
+ rel += 1;
+ }
+ else
+ goto broken_opd;
+ }
+
+ add_aux_fields = non_overlapping && cnt_16b > 0;
+
+ if (need_edit || add_aux_fields)
+ {
+ Elf_Internal_Rela *write_rel;
+ bfd_byte *rptr, *wptr;
+ bfd_byte *new_contents = NULL;
+ bfd_boolean skip;
+ long opd_ent_size;
+
+ /* This seems a waste of time as input .opd sections are all
+ zeros as generated by gcc, but I suppose there's no reason
+ this will always be so. We might start putting something in
+ the third word of .opd entries. */
+ if ((sec->flags & SEC_IN_MEMORY) == 0)
+ {
+ bfd_byte *loc;
+ if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
+ {
+ if (loc != NULL)
+ free (loc);
+ error_ret:
+ if (local_syms != NULL
+ && symtab_hdr->contents != (unsigned char *) local_syms)
+ free (local_syms);
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ return FALSE;
+ }
+ sec->contents = loc;
+ sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
+ }
+
+ elf_section_data (sec)->relocs = relstart;
+
+ new_contents = sec->contents;
+ if (add_aux_fields)
+ {
+ new_contents = bfd_malloc (sec->size + cnt_16b * 8);
+ if (new_contents == NULL)
+ return FALSE;
+ need_pad = FALSE;
+ }
+ wptr = new_contents;
+ rptr = sec->contents;
+
+ write_rel = relstart;
+ skip = FALSE;
+ offset = 0;
+ opd_ent_size = 0;
+ for (rel = relstart; rel < relend; rel++)
+ {
+ unsigned long r_symndx;
+ asection *sym_sec;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_symndx, ibfd))
+ goto error_ret;
+
+ if (rel->r_offset == offset)
+ {
+ struct ppc_link_hash_entry *fdh = NULL;
+
+ /* See if the .opd entry is full 24 byte or
+ 16 byte (with fd_aux entry overlapped with next
+ fd_func). */
+ opd_ent_size = 24;
+ if ((rel + 2 == relend && sec->size == offset + 16)
+ || (rel + 3 < relend
+ && rel[2].r_offset == offset + 16
+ && rel[3].r_offset == offset + 24
+ && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
+ && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
+ opd_ent_size = 16;
+
+ if (h != NULL
+ && h->root.root.string[0] == '.')
+ {
+ fdh = get_fdh ((struct ppc_link_hash_entry *) h,
+ ppc_hash_table (info));
+ if (fdh != NULL
+ && fdh->elf.root.type != bfd_link_hash_defined
+ && fdh->elf.root.type != bfd_link_hash_defweak)
+ fdh = NULL;
+ }
+
+ skip = (sym_sec->owner != ibfd
+ || sym_sec->output_section == bfd_abs_section_ptr);
+ if (skip)
+ {
+ if (fdh != NULL && sym_sec->owner == ibfd)
+ {
+ /* Arrange for the function descriptor sym
+ to be dropped. */
+ fdh->elf.root.u.def.value = 0;
+ fdh->elf.root.u.def.section = sym_sec;
+ }
+ opd_adjust[rel->r_offset / 8] = -1;
+ }
+ else
+ {
+ /* We'll be keeping this opd entry. */
+
+ if (fdh != NULL)
+ {
+ /* Redefine the function descriptor symbol to
+ this location in the opd section. It is
+ necessary to update the value here rather
+ than using an array of adjustments as we do
+ for local symbols, because various places
+ in the generic ELF code use the value
+ stored in u.def.value. */
+ fdh->elf.root.u.def.value = wptr - new_contents;
+ fdh->adjust_done = 1;
+ }
+
+ /* Local syms are a bit tricky. We could
+ tweak them as they can be cached, but
+ we'd need to look through the local syms
+ for the function descriptor sym which we
+ don't have at the moment. So keep an
+ array of adjustments. */
+ opd_adjust[rel->r_offset / 8]
+ = (wptr - new_contents) - (rptr - sec->contents);
+
+ if (wptr != rptr)
+ memcpy (wptr, rptr, opd_ent_size);
+ wptr += opd_ent_size;
+ if (add_aux_fields && opd_ent_size == 16)
+ {
+ memset (wptr, '\0', 8);
+ wptr += 8;
+ }
+ }
+ rptr += opd_ent_size;
+ offset += opd_ent_size;
+ }
+
+ if (skip)
+ {
+ if (!NO_OPD_RELOCS
+ && !info->relocatable
+ && !dec_dynrel_count (rel->r_info, sec, info,
+ NULL, h, sym_sec))
+ goto error_ret;
+ }
+ else
+ {
+ /* We need to adjust any reloc offsets to point to the
+ new opd entries. While we're at it, we may as well
+ remove redundant relocs. */
+ rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
+ if (write_rel != rel)
+ memcpy (write_rel, rel, sizeof (*rel));
+ ++write_rel;
+ }
+ }
+
+ sec->size = wptr - new_contents;
+ sec->reloc_count = write_rel - relstart;
+ if (add_aux_fields)
+ {
+ free (sec->contents);
+ sec->contents = new_contents;
+ }
+
+ /* Fudge the header size too, as this is used later in
+ elf_bfd_final_link if we are emitting relocs. */
+ elf_section_data (sec)->rel_hdr.sh_size
+ = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
+ BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
+ some_edited = TRUE;
+ }
+ else if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+
+ if (local_syms != NULL
+ && symtab_hdr->contents != (unsigned char *) local_syms)
+ {
+ if (!info->keep_memory)
+ free (local_syms);
+ else
+ symtab_hdr->contents = (unsigned char *) local_syms;
+ }
+ }
+
+ if (some_edited)
+ elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
+
+ /* If we are doing a final link and the last .opd entry is just 16 byte
+ long, add a 8 byte padding after it. */
+ if (need_pad != NULL && !info->relocatable)
+ {
+ bfd_byte *p;
+
+ if ((need_pad->flags & SEC_IN_MEMORY) == 0)
+ {
+ BFD_ASSERT (need_pad->size > 0);
+
+ p = bfd_malloc (need_pad->size + 8);
+ if (p == NULL)
+ return FALSE;
+
+ if (! bfd_get_section_contents (need_pad->owner, need_pad,
+ p, 0, need_pad->size))
+ return FALSE;
+
+ need_pad->contents = p;
+ need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
+ }
+ else
+ {
+ p = bfd_realloc (need_pad->contents, need_pad->size + 8);
+ if (p == NULL)
+ return FALSE;
+
+ need_pad->contents = p;
+ }
+
+ memset (need_pad->contents + need_pad->size, 0, 8);
+ need_pad->size += 8;
+ }
+
+ return TRUE;
+}
+
+/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
+
+asection *
+ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+
+ htab = ppc_hash_table (info);
+ if (htab->tls_get_addr != NULL)
+ {
+ struct ppc_link_hash_entry *h = htab->tls_get_addr;
+
+ while (h->elf.root.type == bfd_link_hash_indirect
+ || h->elf.root.type == bfd_link_hash_warning)
+ h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
+
+ htab->tls_get_addr = h;
+
+ if (htab->tls_get_addr_fd == NULL
+ && h->oh != NULL
+ && h->oh->is_func_descriptor
+ && (h->oh->elf.root.type == bfd_link_hash_defined
+ || h->oh->elf.root.type == bfd_link_hash_defweak))
+ htab->tls_get_addr_fd = h->oh;
+ }
+
+ if (htab->tls_get_addr_fd != NULL)
+ {
+ struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
+
+ while (h->elf.root.type == bfd_link_hash_indirect
+ || h->elf.root.type == bfd_link_hash_warning)
+ h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
+
+ htab->tls_get_addr_fd = h;
+ }
+
+ return _bfd_elf_tls_setup (obfd, info);
+}
+
+/* Run through all the TLS relocs looking for optimization
+ opportunities. The linker has been hacked (see ppc64elf.em) to do
+ a preliminary section layout so that we know the TLS segment
+ offsets. We can't optimize earlier because some optimizations need
+ to know the tp offset, and we need to optimize before allocating
+ dynamic relocations. */
+
+bfd_boolean
+ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
+{
+ bfd *ibfd;
+ asection *sec;
+ struct ppc_link_hash_table *htab;
+ int pass;
+
+ if (info->relocatable || info->shared)
+ return TRUE;
+
+ htab = ppc_hash_table (info);
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ Elf_Internal_Sym *locsyms = NULL;
+ asection *toc = bfd_get_section_by_name (ibfd, ".toc");
+ unsigned char *toc_ref = NULL;
+
+ /* Look at all the sections for this file. Make two passes over
+ the relocs. On the first pass, mark toc entries involved
+ with tls relocs, and check that tls relocs involved in
+ setting up a tls_get_addr call are indeed followed by such a
+ call. If they are not, exclude them from the optimizations
+ done on the second pass. */
+ for (pass = 0; pass < 2; ++pass)
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
+ {
+ Elf_Internal_Rela *relstart, *rel, *relend;
+
+ /* Read the relocations. */
+ relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
+ info->keep_memory);
+ if (relstart == NULL)
+ return FALSE;
+
+ relend = relstart + sec->reloc_count;
+ for (rel = relstart; rel < relend; rel++)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sym_sec;
+ char *tls_mask;
+ char tls_set, tls_clear, tls_type = 0;
+ bfd_vma value;
+ bfd_boolean ok_tprel, is_local;
+ long toc_ref_index = 0;
+ int expecting_tls_get_addr = 0;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
+ r_symndx, ibfd))
+ {
+ err_free_rel:
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ if (toc_ref != NULL)
+ free (toc_ref);
+ if (locsyms != NULL
+ && (elf_tdata (ibfd)->symtab_hdr.contents
+ != (unsigned char *) locsyms))
+ free (locsyms);
+ return FALSE;
+ }
+
+ if (h != NULL)
+ {
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ continue;
+ value = h->root.u.def.value;
+ }
+ else
+ /* Symbols referenced by TLS relocs must be of type
+ STT_TLS. So no need for .opd local sym adjust. */
+ value = sym->st_value;
+
+ ok_tprel = FALSE;
+ is_local = FALSE;
+ if (h == NULL
+ || !h->def_dynamic)
+ {
+ is_local = TRUE;
+ value += sym_sec->output_offset;
+ value += sym_sec->output_section->vma;
+ value -= htab->elf.tls_sec->vma;
+ ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
+ < (bfd_vma) 1 << 32);
+ }
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_PPC64_GOT_TLSLD16:
+ case R_PPC64_GOT_TLSLD16_LO:
+ expecting_tls_get_addr = 1;
+ /* Fall thru */
+
+ case R_PPC64_GOT_TLSLD16_HI:
+ case R_PPC64_GOT_TLSLD16_HA:
+ /* These relocs should never be against a symbol
+ defined in a shared lib. Leave them alone if
+ that turns out to be the case. */
+ if (!is_local)
+ continue;
+
+ /* LD -> LE */
+ tls_set = 0;
+ tls_clear = TLS_LD;
+ tls_type = TLS_TLS | TLS_LD;
+ break;
+
+ case R_PPC64_GOT_TLSGD16:
+ case R_PPC64_GOT_TLSGD16_LO:
+ expecting_tls_get_addr = 1;
+ /* Fall thru */
+
+ case R_PPC64_GOT_TLSGD16_HI:
+ case R_PPC64_GOT_TLSGD16_HA:
+ if (ok_tprel)
+ /* GD -> LE */
+ tls_set = 0;
+ else
+ /* GD -> IE */
+ tls_set = TLS_TLS | TLS_TPRELGD;
+ tls_clear = TLS_GD;
+ tls_type = TLS_TLS | TLS_GD;
+ break;
+
+ case R_PPC64_GOT_TPREL16_DS:
+ case R_PPC64_GOT_TPREL16_LO_DS:
+ case R_PPC64_GOT_TPREL16_HI:
+ case R_PPC64_GOT_TPREL16_HA:
+ if (ok_tprel)
+ {
+ /* IE -> LE */
+ tls_set = 0;
+ tls_clear = TLS_TPREL;
+ tls_type = TLS_TLS | TLS_TPREL;
+ break;
+ }
+ continue;
+
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TLS:
+ if (sym_sec == NULL || sym_sec != toc)
+ continue;
+
+ /* Mark this toc entry as referenced by a TLS
+ code sequence. We can do that now in the
+ case of R_PPC64_TLS, and after checking for
+ tls_get_addr for the TOC16 relocs. */
+ if (toc_ref == NULL)
+ {
+ toc_ref = bfd_zmalloc (toc->size / 8);
+ if (toc_ref == NULL)
+ goto err_free_rel;
+ }
+ if (h != NULL)
+ value = h->root.u.def.value;
+ else
+ value = sym->st_value;
+ value += rel->r_addend;
+ BFD_ASSERT (value < toc->size && value % 8 == 0);
+ toc_ref_index = value / 8;
+ if (r_type == R_PPC64_TLS)
+ {
+ toc_ref[toc_ref_index] = 1;
+ continue;
+ }
+
+ if (pass != 0 && toc_ref[toc_ref_index] == 0)
+ continue;
+
+ tls_set = 0;
+ tls_clear = 0;
+ expecting_tls_get_addr = 2;
+ break;
+
+ case R_PPC64_TPREL64:
+ if (pass == 0
+ || sec != toc
+ || toc_ref == NULL
+ || !toc_ref[rel->r_offset / 8])
+ continue;
+ if (ok_tprel)
+ {
+ /* IE -> LE */
+ tls_set = TLS_EXPLICIT;
+ tls_clear = TLS_TPREL;
+ break;
+ }
+ continue;
+
+ case R_PPC64_DTPMOD64:
+ if (pass == 0
+ || sec != toc
+ || toc_ref == NULL
+ || !toc_ref[rel->r_offset / 8])
+ continue;
+ if (rel + 1 < relend
+ && (rel[1].r_info
+ == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
+ && rel[1].r_offset == rel->r_offset + 8)
+ {
+ if (ok_tprel)
+ /* GD -> LE */
+ tls_set = TLS_EXPLICIT | TLS_GD;
+ else
+ /* GD -> IE */
+ tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
+ tls_clear = TLS_GD;
+ }
+ else
+ {
+ if (!is_local)
+ continue;
+
+ /* LD -> LE */
+ tls_set = TLS_EXPLICIT;
+ tls_clear = TLS_LD;
+ }
+ break;
+
+ default:
+ continue;
+ }
+
+ if (pass == 0)
+ {
+ if (!expecting_tls_get_addr)
+ continue;
+
+ if (rel + 1 < relend)
+ {
+ Elf_Internal_Shdr *symtab_hdr;
+ enum elf_ppc64_reloc_type r_type2;
+ unsigned long r_symndx2;
+ struct elf_link_hash_entry *h2;
+
+ symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+
+ /* The next instruction should be a call to
+ __tls_get_addr. Peek at the reloc to be sure. */
+ r_type2 = ELF64_R_TYPE (rel[1].r_info);
+ r_symndx2 = ELF64_R_SYM (rel[1].r_info);
+ if (r_symndx2 >= symtab_hdr->sh_info
+ && (r_type2 == R_PPC64_REL14
+ || r_type2 == R_PPC64_REL14_BRTAKEN
+ || r_type2 == R_PPC64_REL14_BRNTAKEN
+ || r_type2 == R_PPC64_REL24))
+ {
+ struct elf_link_hash_entry **sym_hashes;
+
+ sym_hashes = elf_sym_hashes (ibfd);
+
+ h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
+ while (h2->root.type == bfd_link_hash_indirect
+ || h2->root.type == bfd_link_hash_warning)
+ h2 = ((struct elf_link_hash_entry *)
+ h2->root.u.i.link);
+ if (h2 != NULL
+ && (h2 == &htab->tls_get_addr->elf
+ || h2 == &htab->tls_get_addr_fd->elf))
+ {
+ if (expecting_tls_get_addr == 2)
+ {
+ /* Check for toc tls entries. */
+ char *toc_tls;
+ int retval;
+
+ retval = get_tls_mask (&toc_tls, NULL,
+ &locsyms,
+ rel, ibfd);
+ if (retval == 0)
+ goto err_free_rel;
+ if (retval > 1 && toc_tls != NULL)
+ toc_ref[toc_ref_index] = 1;
+ }
+ continue;
+ }
+ }
+ }
+
+ if (expecting_tls_get_addr != 1)
+ continue;
+
+ /* Uh oh, we didn't find the expected call. We
+ could just mark this symbol to exclude it
+ from tls optimization but it's safer to skip
+ the entire section. */
+ sec->has_tls_reloc = 0;
+ break;
+ }
+
+ if (expecting_tls_get_addr)
+ {
+ struct plt_entry *ent;
+ for (ent = htab->tls_get_addr->elf.plt.plist;
+ ent != NULL;
+ ent = ent->next)
+ if (ent->addend == 0)
+ {
+ if (ent->plt.refcount > 0)
+ {
+ ent->plt.refcount -= 1;
+ expecting_tls_get_addr = 0;
+ }
+ break;
+ }
+ }
+
+ if (expecting_tls_get_addr)
+ {
+ struct plt_entry *ent;
+ for (ent = htab->tls_get_addr_fd->elf.plt.plist;
+ ent != NULL;
+ ent = ent->next)
+ if (ent->addend == 0)
+ {
+ if (ent->plt.refcount > 0)
+ ent->plt.refcount -= 1;
+ break;
+ }
+ }
+
+ if (tls_clear == 0)
+ continue;
+
+ if ((tls_set & TLS_EXPLICIT) == 0)
+ {
+ struct got_entry *ent;
+
+ /* Adjust got entry for this reloc. */
+ if (h != NULL)
+ ent = h->got.glist;
+ else
+ ent = elf_local_got_ents (ibfd)[r_symndx];
+
+ for (; ent != NULL; ent = ent->next)
+ if (ent->addend == rel->r_addend
+ && ent->owner == ibfd
+ && ent->tls_type == tls_type)
+ break;
+ if (ent == NULL)
+ abort ();
+
+ if (tls_set == 0)
+ {
+ /* We managed to get rid of a got entry. */
+ if (ent->got.refcount > 0)
+ ent->got.refcount -= 1;
+ }
+ }
+ else
+ {
+ /* If we got rid of a DTPMOD/DTPREL reloc pair then
+ we'll lose one or two dyn relocs. */
+ if (!dec_dynrel_count (rel->r_info, sec, info,
+ NULL, h, sym_sec))
+ return FALSE;
+
+ if (tls_set == (TLS_EXPLICIT | TLS_GD))
+ {
+ if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
+ NULL, h, sym_sec))
+ return FALSE;
+ }
+ }
+
+ *tls_mask |= tls_set;
+ *tls_mask &= ~tls_clear;
+ }
+
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ }
+
+ if (toc_ref != NULL)
+ free (toc_ref);
+
+ if (locsyms != NULL
+ && (elf_tdata (ibfd)->symtab_hdr.contents
+ != (unsigned char *) locsyms))
+ {
+ if (!info->keep_memory)
+ free (locsyms);
+ else
+ elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
+ }
+ }
+ return TRUE;
+}
+
+/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
+ the values of any global symbols in a toc section that has been
+ edited. Globals in toc sections should be a rarity, so this function
+ sets a flag if any are found in toc sections other than the one just
+ edited, so that futher hash table traversals can be avoided. */
+
+struct adjust_toc_info
+{
+ asection *toc;
+ unsigned long *skip;
+ bfd_boolean global_toc_syms;
+};
+
+static bfd_boolean
+adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
+{
+ struct ppc_link_hash_entry *eh;
+ struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
+
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ return TRUE;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ if (eh->adjust_done)
+ return TRUE;
+
+ if (eh->elf.root.u.def.section == toc_inf->toc)
+ {
+ unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
+ if (skip != (unsigned long) -1)
+ eh->elf.root.u.def.value -= skip;
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%s defined in removed toc entry"), eh->elf.root.root.string);
+ eh->elf.root.u.def.section = &bfd_abs_section;
+ eh->elf.root.u.def.value = 0;
+ }
+ eh->adjust_done = 1;
+ }
+ else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
+ toc_inf->global_toc_syms = TRUE;
+
+ return TRUE;
+}
+
+/* Examine all relocs referencing .toc sections in order to remove
+ unused .toc entries. */
+
+bfd_boolean
+ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
+{
+ bfd *ibfd;
+ struct adjust_toc_info toc_inf;
+
+ toc_inf.global_toc_syms = TRUE;
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ asection *toc, *sec;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Sym *local_syms;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *relstart, *rel;
+ unsigned long *skip, *drop;
+ unsigned char *used;
+ unsigned char *keep, last, some_unused;
+
+ toc = bfd_get_section_by_name (ibfd, ".toc");
+ if (toc == NULL
+ || toc->size == 0
+ || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
+ || elf_discarded_section (toc))
+ continue;
+
+ local_syms = NULL;
+ symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (ibfd);
+
+ /* Look at sections dropped from the final link. */
+ skip = NULL;
+ relstart = NULL;
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ {
+ if (sec->reloc_count == 0
+ || !elf_discarded_section (sec)
+ || get_opd_info (sec)
+ || (sec->flags & SEC_ALLOC) == 0
+ || (sec->flags & SEC_DEBUGGING) != 0)
+ continue;
+
+ relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
+ if (relstart == NULL)
+ goto error_ret;
+
+ /* Run through the relocs to see which toc entries might be
+ unused. */
+ for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned long r_symndx;
+ asection *sym_sec;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ bfd_vma val;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ default:
+ continue;
+
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TOC16_HI:
+ case R_PPC64_TOC16_HA:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ break;
+ }
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_symndx, ibfd))
+ goto error_ret;
+
+ if (sym_sec != toc)
+ continue;
+
+ if (h != NULL)
+ val = h->root.u.def.value;
+ else
+ val = sym->st_value;
+ val += rel->r_addend;
+
+ if (val >= toc->size)
+ continue;
+
+ /* Anything in the toc ought to be aligned to 8 bytes.
+ If not, don't mark as unused. */
+ if (val & 7)
+ continue;
+
+ if (skip == NULL)
+ {
+ skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
+ if (skip == NULL)
+ goto error_ret;
+ }
+
+ skip[val >> 3] = 1;
+ }
+
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ }
+
+ if (skip == NULL)
+ continue;
+
+ used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
+ if (used == NULL)
+ {
+ error_ret:
+ if (local_syms != NULL
+ && symtab_hdr->contents != (unsigned char *) local_syms)
+ free (local_syms);
+ if (sec != NULL
+ && relstart != NULL
+ && elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ if (skip != NULL)
+ free (skip);
+ return FALSE;
+ }
+
+ /* Now check all kept sections that might reference the toc.
+ Check the toc itself last. */
+ for (sec = (ibfd->sections == toc && toc->next ? toc->next
+ : ibfd->sections);
+ sec != NULL;
+ sec = (sec == toc ? NULL
+ : sec->next == NULL ? toc
+ : sec->next == toc && toc->next ? toc->next
+ : sec->next))
+ {
+ int repeat;
+
+ if (sec->reloc_count == 0
+ || elf_discarded_section (sec)
+ || get_opd_info (sec)
+ || (sec->flags & SEC_ALLOC) == 0
+ || (sec->flags & SEC_DEBUGGING) != 0)
+ continue;
+
+ relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
+ if (relstart == NULL)
+ goto error_ret;
+
+ /* Mark toc entries referenced as used. */
+ repeat = 0;
+ do
+ for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned long r_symndx;
+ asection *sym_sec;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ bfd_vma val;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TOC16_HI:
+ case R_PPC64_TOC16_HA:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ /* In case we're taking addresses of toc entries. */
+ case R_PPC64_ADDR64:
+ break;
+
+ default:
+ continue;
+ }
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_symndx, ibfd))
+ {
+ free (used);
+ goto error_ret;
+ }
+
+ if (sym_sec != toc)
+ continue;
+
+ if (h != NULL)
+ val = h->root.u.def.value;
+ else
+ val = sym->st_value;
+ val += rel->r_addend;
+
+ if (val >= toc->size)
+ continue;
+
+ /* For the toc section, we only mark as used if
+ this entry itself isn't unused. */
+ if (sec == toc
+ && !used[val >> 3]
+ && (used[rel->r_offset >> 3]
+ || !skip[rel->r_offset >> 3]))
+ /* Do all the relocs again, to catch reference
+ chains. */
+ repeat = 1;
+
+ used[val >> 3] = 1;
+ }
+ while (repeat);
+ }
+
+ /* Merge the used and skip arrays. Assume that TOC
+ doublewords not appearing as either used or unused belong
+ to to an entry more than one doubleword in size. */
+ for (drop = skip, keep = used, last = 0, some_unused = 0;
+ drop < skip + (toc->size + 7) / 8;
+ ++drop, ++keep)
+ {
+ if (*keep)
+ {
+ *drop = 0;
+ last = 0;
+ }
+ else if (*drop)
+ {
+ some_unused = 1;
+ last = 1;
+ }
+ else
+ *drop = last;
+ }
+
+ free (used);
+
+ if (some_unused)
+ {
+ bfd_byte *contents, *src;
+ unsigned long off;
+
+ /* Shuffle the toc contents, and at the same time convert the
+ skip array from booleans into offsets. */
+ if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
+ goto error_ret;
+
+ elf_section_data (toc)->this_hdr.contents = contents;
+
+ for (src = contents, off = 0, drop = skip;
+ src < contents + toc->size;
+ src += 8, ++drop)
+ {
+ if (*drop)
+ {
+ *drop = (unsigned long) -1;
+ off += 8;
+ }
+ else if (off != 0)
+ {
+ *drop = off;
+ memcpy (src - off, src, 8);
+ }
+ }
+ toc->rawsize = toc->size;
+ toc->size = src - contents - off;
+
+ if (toc->reloc_count != 0)
+ {
+ Elf_Internal_Rela *wrel;
+ bfd_size_type sz;
+
+ /* Read toc relocs. */
+ relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
+ TRUE);
+ if (relstart == NULL)
+ goto error_ret;
+
+ /* Remove unused toc relocs, and adjust those we keep. */
+ wrel = relstart;
+ for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
+ if (skip[rel->r_offset >> 3] != (unsigned long) -1)
+ {
+ wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
+ wrel->r_info = rel->r_info;
+ wrel->r_addend = rel->r_addend;
+ ++wrel;
+ }
+ else if (!dec_dynrel_count (rel->r_info, toc, info,
+ &local_syms, NULL, NULL))
+ goto error_ret;
+
+ toc->reloc_count = wrel - relstart;
+ sz = elf_section_data (toc)->rel_hdr.sh_entsize;
+ elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
+ BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
+ }
+
+ /* Adjust addends for relocs against the toc section sym. */
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ {
+ if (sec->reloc_count == 0
+ || elf_discarded_section (sec))
+ continue;
+
+ relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
+ TRUE);
+ if (relstart == NULL)
+ goto error_ret;
+
+ for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned long r_symndx;
+ asection *sym_sec;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ default:
+ continue;
+
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TOC16_HI:
+ case R_PPC64_TOC16_HA:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ case R_PPC64_ADDR64:
+ break;
+ }
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_symndx, ibfd))
+ goto error_ret;
+
+ if (sym_sec != toc || h != NULL || sym->st_value != 0)
+ continue;
+
+ rel->r_addend -= skip[rel->r_addend >> 3];
+ }
+ }
+
+ /* We shouldn't have local or global symbols defined in the TOC,
+ but handle them anyway. */
+ if (local_syms != NULL)
+ {
+ Elf_Internal_Sym *sym;
+
+ for (sym = local_syms;
+ sym < local_syms + symtab_hdr->sh_info;
+ ++sym)
+ if (sym->st_shndx != SHN_UNDEF
+ && (sym->st_shndx < SHN_LORESERVE
+ || sym->st_shndx > SHN_HIRESERVE)
+ && sym->st_value != 0
+ && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
+ {
+ if (skip[sym->st_value >> 3] != (unsigned long) -1)
+ sym->st_value -= skip[sym->st_value >> 3];
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%s defined in removed toc entry"),
+ bfd_elf_sym_name (ibfd, symtab_hdr, sym,
+ NULL));
+ sym->st_value = 0;
+ sym->st_shndx = SHN_ABS;
+ }
+ symtab_hdr->contents = (unsigned char *) local_syms;
+ }
+ }
+
+ /* Finally, adjust any global syms defined in the toc. */
+ if (toc_inf.global_toc_syms)
+ {
+ toc_inf.toc = toc;
+ toc_inf.skip = skip;
+ toc_inf.global_toc_syms = FALSE;
+ elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
+ &toc_inf);
+ }
+ }
+
+ if (local_syms != NULL
+ && symtab_hdr->contents != (unsigned char *) local_syms)
+ {
+ if (!info->keep_memory)
+ free (local_syms);
+ else
+ symtab_hdr->contents = (unsigned char *) local_syms;
+ }
+ free (skip);
+ }
+
+ return TRUE;
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ dynamic relocs. */
+
+static bfd_boolean
+allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
+{
+ struct bfd_link_info *info;
+ struct ppc_link_hash_table *htab;
+ asection *s;
+ struct ppc_link_hash_entry *eh;
+ struct ppc_dyn_relocs *p;
+ struct got_entry *gent;
+
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ info = (struct bfd_link_info *) inf;
+ htab = ppc_hash_table (info);
+
+ if (htab->elf.dynamic_sections_created
+ && h->dynindx != -1
+ && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
+ {
+ struct plt_entry *pent;
+ bfd_boolean doneone = FALSE;
+ for (pent = h->plt.plist; pent != NULL; pent = pent->next)
+ if (pent->plt.refcount > 0)
+ {
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ s = htab->plt;
+ if (s->size == 0)
+ s->size += PLT_INITIAL_ENTRY_SIZE;
+
+ pent->plt.offset = s->size;
+
+ /* Make room for this entry. */
+ s->size += PLT_ENTRY_SIZE;
+
+ /* Make room for the .glink code. */
+ s = htab->glink;
+ if (s->size == 0)
+ s->size += GLINK_CALL_STUB_SIZE;
+ /* We need bigger stubs past index 32767. */
+ if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
+ s->size += 4;
+ s->size += 2*4;
+
+ /* We also need to make an entry in the .rela.plt section. */
+ s = htab->relplt;
+ s->size += sizeof (Elf64_External_Rela);
+ doneone = TRUE;
+ }
+ else
+ pent->plt.offset = (bfd_vma) -1;
+ if (!doneone)
+ {
+ h->plt.plist = NULL;
+ h->needs_plt = 0;
+ }
+ }
+ else
+ {
+ h->plt.plist = NULL;
+ h->needs_plt = 0;
+ }
+
+ eh = (struct ppc_link_hash_entry *) h;
+ /* Run through the TLS GD got entries first if we're changing them
+ to TPREL. */
+ if ((eh->tls_mask & TLS_TPRELGD) != 0)
+ for (gent = h->got.glist; gent != NULL; gent = gent->next)
+ if (gent->got.refcount > 0
+ && (gent->tls_type & TLS_GD) != 0)
+ {
+ /* This was a GD entry that has been converted to TPREL. If
+ there happens to be a TPREL entry we can use that one. */
+ struct got_entry *ent;
+ for (ent = h->got.glist; ent != NULL; ent = ent->next)
+ if (ent->got.refcount > 0
+ && (ent->tls_type & TLS_TPREL) != 0
+ && ent->addend == gent->addend
+ && ent->owner == gent->owner)
+ {
+ gent->got.refcount = 0;
+ break;
+ }
+
+ /* If not, then we'll be using our own TPREL entry. */
+ if (gent->got.refcount != 0)
+ gent->tls_type = TLS_TLS | TLS_TPREL;
+ }
+
+ for (gent = h->got.glist; gent != NULL; gent = gent->next)
+ if (gent->got.refcount > 0)
+ {
+ bfd_boolean dyn;
+
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic,
+ nor will all TLS symbols. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+
+ if ((gent->tls_type & TLS_LD) != 0
+ && !h->def_dynamic)
+ {
+ ppc64_tlsld_got (gent->owner)->refcount += 1;
+ gent->got.offset = (bfd_vma) -1;
+ continue;
+ }
+
+ s = ppc64_elf_tdata (gent->owner)->got;
+ gent->got.offset = s->size;
+ s->size
+ += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
+ dyn = htab->elf.dynamic_sections_created;
+ if ((info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ ppc64_elf_tdata (gent->owner)->relgot->size
+ += (gent->tls_type & eh->tls_mask & TLS_GD
+ ? 2 * sizeof (Elf64_External_Rela)
+ : sizeof (Elf64_External_Rela));
+ }
+ else
+ gent->got.offset = (bfd_vma) -1;
+
+ if (eh->dyn_relocs == NULL)
+ return TRUE;
+
+ /* In the shared -Bsymbolic case, discard space allocated for
+ dynamic pc-relative relocs against symbols which turn out to be
+ defined in regular objects. For the normal shared case, discard
+ space for relocs that have become local due to symbol visibility
+ changes. */
+
+ if (info->shared)
+ {
+ /* Relocs that use pc_count are those that appear on a call insn,
+ or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
+ generated via assembly. We want calls to protected symbols to
+ resolve directly to the function rather than going via the plt.
+ If people want function pointer comparisons to work as expected
+ then they should avoid writing weird assembly. */
+ if (SYMBOL_CALLS_LOCAL (info, h))
+ {
+ struct ppc_dyn_relocs **pp;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ {
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+ }
+
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (eh->dyn_relocs != NULL
+ && h->root.type == bfd_link_hash_undefweak)
+ {
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ eh->dyn_relocs = NULL;
+
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ else if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+ }
+ }
+ else if (ELIMINATE_COPY_RELOCS)
+ {
+ /* For the non-shared case, discard space for relocs against
+ symbols which turn out to need copy relocs or are not
+ dynamic. */
+
+ if (!h->non_got_ref
+ && h->def_dynamic
+ && !h->def_regular)
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+
+ /* If that succeeded, we know we'll be keeping all the
+ relocs. */
+ if (h->dynindx != -1)
+ goto keep;
+ }
+
+ eh->dyn_relocs = NULL;
+
+ keep: ;
+ }
+
+ /* Finally, allocate space. */
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *sreloc = elf_section_data (p->sec)->sreloc;
+ sreloc->size += p->count * sizeof (Elf64_External_Rela);
+ }
+
+ return TRUE;
+}
+
+/* Find any dynamic relocs that apply to read-only sections. */
+
+static bfd_boolean
+readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
+{
+ struct ppc_link_hash_entry *eh;
+ struct ppc_dyn_relocs *p;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ eh = (struct ppc_link_hash_entry *) h;
+ for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *s = p->sec->output_section;
+
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ {
+ struct bfd_link_info *info = inf;
+
+ info->flags |= DF_TEXTREL;
+
+ /* Not an error, just cut short the traversal. */
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+/* Set the sizes of the dynamic sections. */
+
+static bfd_boolean
+ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab;
+ bfd *dynobj;
+ asection *s;
+ bfd_boolean relocs;
+ bfd *ibfd;
+
+ htab = ppc_hash_table (info);
+ dynobj = htab->elf.dynobj;
+ if (dynobj == NULL)
+ abort ();
+
+ if (htab->elf.dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (info->executable)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ if (s == NULL)
+ abort ();
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
+
+ /* Set up .got offsets for local syms, and space for local dynamic
+ relocs. */
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ struct got_entry **lgot_ents;
+ struct got_entry **end_lgot_ents;
+ char *lgot_masks;
+ bfd_size_type locsymcount;
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *srel;
+
+ if (!is_ppc64_elf_target (ibfd->xvec))
+ continue;
+
+ for (s = ibfd->sections; s != NULL; s = s->next)
+ {
+ struct ppc_dyn_relocs *p;
+
+ for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
+ {
+ if (!bfd_is_abs_section (p->sec)
+ && bfd_is_abs_section (p->sec->output_section))
+ {
+ /* Input section has been discarded, either because
+ it is a copy of a linkonce section or due to
+ linker script /DISCARD/, so we'll be discarding
+ the relocs too. */
+ }
+ else if (p->count != 0)
+ {
+ srel = elf_section_data (p->sec)->sreloc;
+ srel->size += p->count * sizeof (Elf64_External_Rela);
+ if ((p->sec->output_section->flags & SEC_READONLY) != 0)
+ info->flags |= DF_TEXTREL;
+ }
+ }
+ }
+
+ lgot_ents = elf_local_got_ents (ibfd);
+ if (!lgot_ents)
+ continue;
+
+ symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ locsymcount = symtab_hdr->sh_info;
+ end_lgot_ents = lgot_ents + locsymcount;
+ lgot_masks = (char *) end_lgot_ents;
+ s = ppc64_elf_tdata (ibfd)->got;
+ srel = ppc64_elf_tdata (ibfd)->relgot;
+ for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
+ {
+ struct got_entry *ent;
+
+ for (ent = *lgot_ents; ent != NULL; ent = ent->next)
+ if (ent->got.refcount > 0)
+ {
+ if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
+ {
+ ppc64_tlsld_got (ibfd)->refcount += 1;
+ ent->got.offset = (bfd_vma) -1;
+ }
+ else
+ {
+ ent->got.offset = s->size;
+ if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
+ {
+ s->size += 16;
+ if (info->shared)
+ srel->size += 2 * sizeof (Elf64_External_Rela);
+ }
+ else
+ {
+ s->size += 8;
+ if (info->shared)
+ srel->size += sizeof (Elf64_External_Rela);
+ }
+ }
+ }
+ else
+ ent->got.offset = (bfd_vma) -1;
+ }
+ }
+
+ /* Allocate global sym .plt and .got entries, and space for global
+ sym dynamic relocs. */
+ elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
+
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ if (!is_ppc64_elf_target (ibfd->xvec))
+ continue;
+
+ if (ppc64_tlsld_got (ibfd)->refcount > 0)
+ {
+ s = ppc64_elf_tdata (ibfd)->got;
+ ppc64_tlsld_got (ibfd)->offset = s->size;
+ s->size += 16;
+ if (info->shared)
+ {
+ asection *srel = ppc64_elf_tdata (ibfd)->relgot;
+ srel->size += sizeof (Elf64_External_Rela);
+ }
+ }
+ else
+ ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
+ }
+
+ /* We now have determined the sizes of the various dynamic sections.
+ Allocate memory for them. */
+ relocs = FALSE;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ if (s == htab->brlt || s == htab->relbrlt)
+ /* These haven't been allocated yet; don't strip. */
+ continue;
+ else if (s == htab->got
+ || s == htab->plt
+ || s == htab->glink
+ || s == htab->dynbss)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ }
+ else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
+ {
+ if (s->size != 0)
+ {
+ if (s != htab->relplt)
+ relocs = TRUE;
+
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ s->reloc_count = 0;
+ }
+ }
+ else
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
+
+ if (s->size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ s->flags |= SEC_EXCLUDE;
+ continue;
+ }
+
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
+ /* Allocate memory for the section contents. We use bfd_zalloc
+ here in case unused entries are not reclaimed before the
+ section's contents are written out. This should not happen,
+ but this way if it does we get a R_PPC64_NONE reloc in .rela
+ sections instead of garbage.
+ We also rely on the section contents being zero when writing
+ the GOT. */
+ s->contents = bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL)
+ return FALSE;
+ }
+
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ if (!is_ppc64_elf_target (ibfd->xvec))
+ continue;
+
+ s = ppc64_elf_tdata (ibfd)->got;
+ if (s != NULL && s != htab->got)
+ {
+ if (s->size == 0)
+ s->flags |= SEC_EXCLUDE;
+ else
+ {
+ s->contents = bfd_zalloc (ibfd, s->size);
+ if (s->contents == NULL)
+ return FALSE;
+ }
+ }
+ s = ppc64_elf_tdata (ibfd)->relgot;
+ if (s != NULL)
+ {
+ if (s->size == 0)
+ s->flags |= SEC_EXCLUDE;
+ else
+ {
+ s->contents = bfd_zalloc (ibfd, s->size);
+ if (s->contents == NULL)
+ return FALSE;
+ relocs = TRUE;
+ s->reloc_count = 0;
+ }
+ }
+ }
+
+ if (htab->elf.dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in ppc64_elf_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+#define add_dynamic_entry(TAG, VAL) \
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
+
+ if (info->executable)
+ {
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
+ }
+
+ if (htab->plt != NULL && htab->plt->size != 0)
+ {
+ if (!add_dynamic_entry (DT_PLTGOT, 0)
+ || !add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_RELA)
+ || !add_dynamic_entry (DT_JMPREL, 0)
+ || !add_dynamic_entry (DT_PPC64_GLINK, 0))
+ return FALSE;
+ }
+
+ if (NO_OPD_RELOCS)
+ {
+ if (!add_dynamic_entry (DT_PPC64_OPD, 0)
+ || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
+ return FALSE;
+ }
+
+ if (relocs)
+ {
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
+ return FALSE;
+
+ /* If any dynamic relocs apply to a read-only section,
+ then we need a DT_TEXTREL entry. */
+ if ((info->flags & DF_TEXTREL) == 0)
+ elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
+
+ if ((info->flags & DF_TEXTREL) != 0)
+ {
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
+ }
+ }
+ }
+#undef add_dynamic_entry
+
+ return TRUE;
}
-/* Handle the R_PPC_ADDR16_HA reloc. */
+/* Determine the type of stub needed, if any, for a call. */
-static bfd_reloc_status_type
-ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data ATTRIBUTE_UNUSED;
- asection *input_section;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- bfd_vma relocation;
+static inline enum ppc_stub_type
+ppc_type_of_stub (asection *input_sec,
+ const Elf_Internal_Rela *rel,
+ struct ppc_link_hash_entry **hash,
+ bfd_vma destination)
+{
+ struct ppc_link_hash_entry *h = *hash;
+ bfd_vma location;
+ bfd_vma branch_offset;
+ bfd_vma max_branch_offset;
+ enum elf_ppc64_reloc_type r_type;
- if (output_bfd != NULL)
+ if (h != NULL)
{
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
+ struct ppc_link_hash_entry *fdh = h;
+ if (fdh->oh != NULL
+ && fdh->oh->is_func_descriptor)
+ fdh = fdh->oh;
+
+ if (fdh->elf.dynindx != -1)
+ {
+ struct plt_entry *ent;
+
+ for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
+ if (ent->addend == rel->r_addend
+ && ent->plt.offset != (bfd_vma) -1)
+ {
+ *hash = fdh;
+ return ppc_stub_plt_call;
+ }
+ }
+
+ /* Here, we know we don't have a plt entry. If we don't have a
+ either a defined function descriptor or a defined entry symbol
+ in a regular object file, then it is pointless trying to make
+ any other type of stub. */
+ if (!((fdh->elf.root.type == bfd_link_hash_defined
+ || fdh->elf.root.type == bfd_link_hash_defweak)
+ && fdh->elf.root.u.def.section->output_section != NULL)
+ && !((h->elf.root.type == bfd_link_hash_defined
+ || h->elf.root.type == bfd_link_hash_defweak)
+ && h->elf.root.u.def.section->output_section != NULL))
+ return ppc_stub_none;
}
- if (reloc_entry->address > input_section->_cooked_size)
- return bfd_reloc_outofrange;
+ /* Determine where the call point is. */
+ location = (input_sec->output_offset
+ + input_sec->output_section->vma
+ + rel->r_offset);
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
+ branch_offset = destination - location;
+ r_type = ELF64_R_TYPE (rel->r_info);
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- relocation += reloc_entry->addend;
+ /* Determine if a long branch stub is needed. */
+ max_branch_offset = 1 << 25;
+ if (r_type != R_PPC64_REL24)
+ max_branch_offset = 1 << 15;
- reloc_entry->addend += (relocation & 0x8000) << 1;
+ if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
+ /* We need a stub. Figure out whether a long_branch or plt_branch
+ is needed later. */
+ return ppc_stub_long_branch;
- return bfd_reloc_continue;
+ return ppc_stub_none;
}
-/* Function to set whether a module needs the -mrelocatable bit set. */
+/* Build a .plt call stub. */
-static boolean
-ppc64_elf_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
+static inline bfd_byte *
+build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
{
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
+#define PPC_LO(v) ((v) & 0xffff)
+#define PPC_HI(v) (((v) >> 16) & 0xffff)
+#define PPC_HA(v) PPC_HI ((v) + 0x8000)
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = true;
- return true;
+ if (PPC_HA (offset) != 0)
+ {
+ bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
+ bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
+ bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
+ if (PPC_HA (offset + 16) != PPC_HA (offset))
+ {
+ bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
+ offset = 0;
+ }
+ bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
+ bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
+ bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
+ bfd_put_32 (obfd, BCTR, p), p += 4;
+ }
+ else
+ {
+ bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
+ bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
+ if (PPC_HA (offset + 16) != PPC_HA (offset))
+ {
+ bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
+ offset = 0;
+ }
+ bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
+ bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
+ bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
+ bfd_put_32 (obfd, BCTR, p), p += 4;
+ }
+ return p;
}
-/* Copy backend specific data from one object module to another. */
-static boolean
-ppc64_elf_copy_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+static bfd_boolean
+ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
{
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
+ struct ppc_stub_hash_entry *stub_entry;
+ struct ppc_branch_hash_entry *br_entry;
+ struct bfd_link_info *info;
+ struct ppc_link_hash_table *htab;
+ bfd_byte *loc;
+ bfd_byte *p;
+ unsigned int indx;
+ struct plt_entry *ent;
+ bfd_vma dest, off;
+ int size;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
+ info = in_arg;
+
+ htab = ppc_hash_table (info);
+
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = stub_entry->stub_sec->size;
+ loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
+
+ htab->stub_count[stub_entry->stub_type - 1] += 1;
+ switch (stub_entry->stub_type)
+ {
+ case ppc_stub_long_branch:
+ case ppc_stub_long_branch_r2off:
+ /* Branches are relative. This is where we are going to. */
+ off = dest = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+
+ /* And this is where we are coming from. */
+ off -= (stub_entry->stub_offset
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma);
+
+ size = 4;
+ if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
+ {
+ bfd_vma r2off;
+
+ r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
+ loc += 4;
+ size = 12;
+ if (PPC_HA (r2off) != 0)
+ {
+ size = 16;
+ bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
+ loc += 4;
+ }
+ bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
+ loc += 4;
+ off -= size - 4;
+ }
+ bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
- BFD_ASSERT (!elf_flags_init (obfd)
- || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
+ if (off + (1 << 25) >= (bfd_vma) (1 << 26))
+ {
+ (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
+ stub_entry->root.string);
+ htab->stub_error = TRUE;
+ return FALSE;
+ }
- elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
- elf_flags_init (obfd) = true;
- return true;
-}
+ if (info->emitrelocations)
+ {
+ Elf_Internal_Rela *relocs, *r;
+ struct bfd_elf_section_data *elfsec_data;
-/* Merge backend specific data from an object file to the output
- object file when linking. */
-static boolean
-ppc64_elf_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
-{
- flagword old_flags;
- flagword new_flags;
- boolean error;
+ elfsec_data = elf_section_data (stub_entry->stub_sec);
+ relocs = elfsec_data->relocs;
+ if (relocs == NULL)
+ {
+ bfd_size_type relsize;
+ relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
+ relocs = bfd_alloc (htab->stub_bfd, relsize);
+ if (relocs == NULL)
+ return FALSE;
+ elfsec_data->relocs = relocs;
+ elfsec_data->rel_hdr.sh_size = (stub_entry->stub_sec->reloc_count
+ * sizeof (Elf64_External_Rela));
+ elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
+ stub_entry->stub_sec->reloc_count = 0;
+ }
+ r = relocs + stub_entry->stub_sec->reloc_count;
+ stub_entry->stub_sec->reloc_count += 1;
+ r->r_offset = loc - stub_entry->stub_sec->contents;
+ r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
+ r->r_addend = dest;
+ if (stub_entry->h != NULL)
+ {
+ struct elf_link_hash_entry **hashes;
+ unsigned long symndx;
+ struct ppc_link_hash_entry *h;
- /* Check if we have the same endianess. */
- if (ibfd->xvec->byteorder != obfd->xvec->byteorder
- && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
- {
- const char *msg;
+ hashes = elf_sym_hashes (htab->stub_bfd);
+ if (hashes == NULL)
+ {
+ bfd_size_type hsize;
+
+ hsize = (htab->stub_globals + 1) * sizeof (*hashes);
+ hashes = bfd_zalloc (htab->stub_bfd, hsize);
+ if (hashes == NULL)
+ return FALSE;
+ elf_sym_hashes (htab->stub_bfd) = hashes;
+ htab->stub_globals = 1;
+ }
+ symndx = htab->stub_globals++;
+ h = stub_entry->h;
+ hashes[symndx] = &h->elf;
+ r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
+ if (h->oh != NULL && h->oh->is_func)
+ h = h->oh;
+ if (h->elf.root.u.def.section != stub_entry->target_section)
+ /* H is an opd symbol. The addend must be zero. */
+ r->r_addend = 0;
+ else
+ {
+ off = (h->elf.root.u.def.value
+ + h->elf.root.u.def.section->output_offset
+ + h->elf.root.u.def.section->output_section->vma);
+ r->r_addend -= off;
+ }
+ }
+ }
+ break;
- if (bfd_big_endian (ibfd))
- msg = _("%s: compiled for a big endian system and target is little endian");
- else
- msg = _("%s: compiled for a little endian system and target is big endian");
+ case ppc_stub_plt_branch:
+ case ppc_stub_plt_branch_r2off:
+ br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
+ stub_entry->root.string + 9,
+ FALSE, FALSE);
+ if (br_entry == NULL)
+ {
+ (*_bfd_error_handler) (_("can't find branch stub `%s'"),
+ stub_entry->root.string);
+ htab->stub_error = TRUE;
+ return FALSE;
+ }
- (*_bfd_error_handler) (msg, bfd_get_filename (ibfd));
+ off = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
- bfd_set_error (bfd_error_wrong_format);
- return false;
- }
+ bfd_put_64 (htab->brlt->owner, off,
+ htab->brlt->contents + br_entry->offset);
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
+ if (br_entry->iter == htab->stub_iteration)
+ {
+ br_entry->iter = 0;
- new_flags = elf_elfheader (ibfd)->e_flags;
- old_flags = elf_elfheader (obfd)->e_flags;
- if (!elf_flags_init (obfd))
- {
- /* First call, no flags set. */
- elf_flags_init (obfd) = true;
- elf_elfheader (obfd)->e_flags = new_flags;
- }
+ if (htab->relbrlt != NULL)
+ {
+ /* Create a reloc for the branch lookup table entry. */
+ Elf_Internal_Rela rela;
+ bfd_byte *rl;
+
+ rela.r_offset = (br_entry->offset
+ + htab->brlt->output_offset
+ + htab->brlt->output_section->vma);
+ rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
+ rela.r_addend = off;
+
+ rl = htab->relbrlt->contents;
+ rl += (htab->relbrlt->reloc_count++
+ * sizeof (Elf64_External_Rela));
+ bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
+ }
+ else if (info->emitrelocations)
+ {
+ Elf_Internal_Rela *relocs, *r;
+ struct bfd_elf_section_data *elfsec_data;
- else if (new_flags == old_flags)
- /* Compatible flags are ok. */
- ;
+ elfsec_data = elf_section_data (htab->brlt);
+ relocs = elfsec_data->relocs;
+ if (relocs == NULL)
+ {
+ bfd_size_type relsize;
+ relsize = htab->brlt->reloc_count * sizeof (*relocs);
+ relocs = bfd_alloc (htab->brlt->owner, relsize);
+ if (relocs == NULL)
+ return FALSE;
+ elfsec_data->relocs = relocs;
+ elfsec_data->rel_hdr.sh_size
+ = (stub_entry->stub_sec->reloc_count
+ * sizeof (Elf64_External_Rela));
+ elfsec_data->rel_hdr.sh_entsize
+ = sizeof (Elf64_External_Rela);
+ htab->brlt->reloc_count = 0;
+ }
+ r = relocs + htab->brlt->reloc_count;
+ htab->brlt->reloc_count += 1;
+ r->r_offset = (br_entry->offset
+ + htab->brlt->output_offset
+ + htab->brlt->output_section->vma);
+ r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
+ r->r_addend = off;
+ }
+ }
- else
- {
- /* Incompatible flags. Warn about -mrelocatable mismatch.
- Allow -mrelocatable-lib to be linked with either. */
- error = false;
- if ((new_flags & EF_PPC_RELOCATABLE) != 0
- && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
+ off = (br_entry->offset
+ + htab->brlt->output_offset
+ + htab->brlt->output_section->vma
+ - elf_gp (htab->brlt->output_section->owner)
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
+
+ if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
{
- error = true;
(*_bfd_error_handler)
- (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
- bfd_get_filename (ibfd));
+ (_("linkage table error against `%s'"),
+ stub_entry->root.string);
+ bfd_set_error (bfd_error_bad_value);
+ htab->stub_error = TRUE;
+ return FALSE;
}
- else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
- && (old_flags & EF_PPC_RELOCATABLE) != 0)
+
+ indx = off;
+ if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
{
- error = true;
- (*_bfd_error_handler)
- (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
- bfd_get_filename (ibfd));
+ if (PPC_HA (indx) != 0)
+ {
+ size = 16;
+ bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
+ loc += 4;
+ bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
+ }
+ else
+ {
+ size = 12;
+ bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
+ }
}
+ else
+ {
+ bfd_vma r2off;
+
+ r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
+ loc += 4;
+ size = 20;
+ if (PPC_HA (indx) != 0)
+ {
+ size += 4;
+ bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
+ loc += 4;
+ bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
+ loc += 4;
+ }
+ else
+ {
+ bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (indx), loc);
+ loc += 4;
+ }
- /* The output is -mrelocatable-lib iff both the input files are. */
- if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
- elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
+ if (PPC_HA (r2off) != 0)
+ {
+ size += 4;
+ bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
+ loc += 4;
+ }
+ bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
+ }
+ loc += 4;
+ bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
+ loc += 4;
+ bfd_put_32 (htab->stub_bfd, BCTR, loc);
+ break;
- /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
- but each input file is either -mrelocatable or -mrelocatable-lib. */
- if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
- && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
- && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
- elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
+ case ppc_stub_plt_call:
+ /* Do the best we can for shared libraries built without
+ exporting ".foo" for each "foo". This can happen when symbol
+ versioning scripts strip all bar a subset of symbols. */
+ if (stub_entry->h->oh != NULL
+ && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
+ && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
+ {
+ /* Point the symbol at the stub. There may be multiple stubs,
+ we don't really care; The main thing is to make this sym
+ defined somewhere. Maybe defining the symbol in the stub
+ section is a silly idea. If we didn't do this, htab->top_id
+ could disappear. */
+ stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
+ stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
+ stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
+ }
- /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
- if any module uses it. */
- elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
+ /* Now build the stub. */
+ off = (bfd_vma) -1;
+ for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
+ if (ent->addend == stub_entry->addend)
+ {
+ off = ent->plt.offset;
+ break;
+ }
+ if (off >= (bfd_vma) -2)
+ abort ();
- new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
- old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
+ off &= ~ (bfd_vma) 1;
+ off += (htab->plt->output_offset
+ + htab->plt->output_section->vma
+ - elf_gp (htab->plt->output_section->owner)
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
- /* Warn about any other mismatches. */
- if (new_flags != old_flags)
+ if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
{
- error = true;
(*_bfd_error_handler)
- (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
- bfd_get_filename (ibfd), (long) new_flags, (long) old_flags);
+ (_("linkage table error against `%s'"),
+ stub_entry->h->elf.root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ htab->stub_error = TRUE;
+ return FALSE;
}
- if (error)
+ p = build_plt_stub (htab->stub_bfd, loc, off);
+ size = p - loc;
+ break;
+
+ default:
+ BFD_FAIL ();
+ return FALSE;
+ }
+
+ stub_entry->stub_sec->size += size;
+
+ if (htab->emit_stub_syms)
+ {
+ struct elf_link_hash_entry *h;
+ size_t len1, len2;
+ char *name;
+ const char *const stub_str[] = { "long_branch",
+ "long_branch_r2off",
+ "plt_branch",
+ "plt_branch_r2off",
+ "plt_call" };
+
+ len1 = strlen (stub_str[stub_entry->stub_type - 1]);
+ len2 = strlen (stub_entry->root.string);
+ name = bfd_malloc (len1 + len2 + 2);
+ if (name == NULL)
+ return FALSE;
+ memcpy (name, stub_entry->root.string, 9);
+ memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
+ memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
+ h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
+ if (h == NULL)
+ return FALSE;
+ if (h->root.type == bfd_link_hash_new)
{
- bfd_set_error (bfd_error_bad_value);
- return false;
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = stub_entry->stub_sec;
+ h->root.u.def.value = stub_entry->stub_offset;
+ h->ref_regular = 1;
+ h->def_regular = 1;
+ h->ref_regular_nonweak = 1;
+ h->forced_local = 1;
+ h->non_elf = 0;
}
}
- return true;
+ return TRUE;
}
-/* Handle a PowerPC specific section when reading an object file. This
- is called when elfcode.h finds a section with an unknown type. */
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes, and select plt_branch stubs where
+ long_branch stubs won't do. */
-static boolean
-ppc64_elf_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf64_Internal_Shdr *hdr;
- char *name;
+static bfd_boolean
+ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
{
- asection *newsect;
- flagword flags;
+ struct ppc_stub_hash_entry *stub_entry;
+ struct bfd_link_info *info;
+ struct ppc_link_hash_table *htab;
+ bfd_vma off;
+ int size;
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
- return false;
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
+ info = in_arg;
- newsect = hdr->bfd_section;
- flags = bfd_get_section_flags (abfd, newsect);
- if (hdr->sh_flags & SHF_EXCLUDE)
- flags |= SEC_EXCLUDE;
+ htab = ppc_hash_table (info);
- if (hdr->sh_type == SHT_ORDERED)
- flags |= SEC_SORT_ENTRIES;
+ if (stub_entry->stub_type == ppc_stub_plt_call)
+ {
+ struct plt_entry *ent;
+ off = (bfd_vma) -1;
+ for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
+ if (ent->addend == stub_entry->addend)
+ {
+ off = ent->plt.offset & ~(bfd_vma) 1;
+ break;
+ }
+ if (off >= (bfd_vma) -2)
+ abort ();
+ off += (htab->plt->output_offset
+ + htab->plt->output_section->vma
+ - elf_gp (htab->plt->output_section->owner)
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
+
+ size = PLT_CALL_STUB_SIZE;
+ if (PPC_HA (off) == 0)
+ size -= 4;
+ if (PPC_HA (off + 16) != PPC_HA (off))
+ size += 4;
+ }
+ else
+ {
+ /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
+ variants. */
+ bfd_vma r2off = 0;
+
+ off = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+ off -= (stub_entry->stub_sec->size
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma);
+
+ /* Reset the stub type from the plt variant in case we now
+ can reach with a shorter stub. */
+ if (stub_entry->stub_type >= ppc_stub_plt_branch)
+ stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
+
+ size = 4;
+ if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
+ {
+ r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
+ size = 12;
+ if (PPC_HA (r2off) != 0)
+ size = 16;
+ off -= size - 4;
+ }
- bfd_set_section_flags (abfd, newsect, flags);
- return true;
-}
-\f
-/* The following routines are specific to the ELF linker, while
- routines above are used generally. They appear in this file more
- or less in the order in which they are called from external
- routines. eg. ppc64_elf_check_relocs is called early in the link
- process, ppc64_elf_finish_dynamic_sections is one of the last
- functions called. */
+ /* If the branch offset if too big, use a ppc_stub_plt_branch. */
+ if (off + (1 << 25) >= (bfd_vma) (1 << 26))
+ {
+ struct ppc_branch_hash_entry *br_entry;
+ unsigned int indx;
-/* Create the .glink section as well as the ordinary dynamic
- sections. */
+ br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
+ stub_entry->root.string + 9,
+ TRUE, FALSE);
+ if (br_entry == NULL)
+ {
+ (*_bfd_error_handler) (_("can't build branch stub `%s'"),
+ stub_entry->root.string);
+ htab->stub_error = TRUE;
+ return FALSE;
+ }
-static boolean
-ppc64_elf_create_dynamic_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
-{
- asection *s;
- flagword flags;
+ if (br_entry->iter != htab->stub_iteration)
+ {
+ br_entry->iter = htab->stub_iteration;
+ br_entry->offset = htab->brlt->size;
+ htab->brlt->size += 8;
- if (!_bfd_elf_create_dynamic_sections (abfd, info))
- return false;
+ if (htab->relbrlt != NULL)
+ htab->relbrlt->size += sizeof (Elf64_External_Rela);
+ else if (info->emitrelocations)
+ {
+ htab->brlt->reloc_count += 1;
+ htab->brlt->flags |= SEC_RELOC;
+ }
+ }
- /* Our .plt just contains pointers, no code. */
- s = bfd_get_section_by_name (abfd, ".plt");
- if (s == NULL)
- return false;
- flags = bfd_get_section_flags (abfd, s);
- flags &= ~SEC_CODE;
- if (! bfd_set_section_flags (abfd, s, flags))
- return false;
+ stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
+ off = (br_entry->offset
+ + htab->brlt->output_offset
+ + htab->brlt->output_section->vma
+ - elf_gp (htab->brlt->output_section->owner)
+ - htab->stub_group[stub_entry->id_sec->id].toc_off);
- /* Create .glink for global linkage functions. */
- flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
- s = bfd_make_section (abfd, ".glink");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags)
- || ! bfd_set_section_alignment (abfd, s, 3))
- return false;
+ indx = off;
+ if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
+ {
+ size = 12;
+ if (PPC_HA (indx) != 0)
+ size = 16;
+ }
+ else
+ {
+ size = 20;
+ if (PPC_HA (indx) != 0)
+ size += 4;
+
+ if (PPC_HA (r2off) != 0)
+ size += 4;
+ }
+ }
+ else if (info->emitrelocations)
+ {
+ stub_entry->stub_sec->reloc_count += 1;
+ stub_entry->stub_sec->flags |= SEC_RELOC;
+ }
+ }
- return true;
+ stub_entry->stub_sec->size += size;
+ return TRUE;
}
-/* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
+/* Set up various things so that we can make a list of input sections
+ for each output section included in the link. Returns -1 on error,
+ 0 when no stubs will be needed, and 1 on success. */
-static boolean
-ppc64_elf_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+int
+ppc64_elf_setup_section_lists (bfd *output_bfd,
+ struct bfd_link_info *info,
+ int no_multi_toc)
{
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- bfd_signed_vma *local_got_refcounts;
- asection *sreloc;
- asection *sgot = NULL;
- asection *srelgot = NULL;
+ bfd *input_bfd;
+ int top_id, top_index, id;
+ asection *section;
+ asection **input_list;
+ bfd_size_type amt;
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+
+ htab->no_multi_toc = no_multi_toc;
+
+ if (htab->brlt == NULL)
+ return 0;
+
+ /* Find the top input section id. */
+ for (input_bfd = info->input_bfds, top_id = 3;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next)
+ {
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if (top_id < section->id)
+ top_id = section->id;
+ }
+ }
- if (info->relocateable)
- return true;
+ htab->top_id = top_id;
+ amt = sizeof (struct map_stub) * (top_id + 1);
+ htab->stub_group = bfd_zmalloc (amt);
+ if (htab->stub_group == NULL)
+ return -1;
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_check_relocs called for section %s in %s\n",
- bfd_get_section_name (abfd, sec),
- bfd_get_filename (abfd));
-#endif
+ /* Set toc_off for com, und, abs and ind sections. */
+ for (id = 0; id < 3; id++)
+ htab->stub_group[id].toc_off = TOC_BASE_OFF;
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- local_got_refcounts = elf_local_got_refcounts (abfd);
+ elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
- sym_hashes = elf_sym_hashes (abfd);
- sym_hashes_end = (sym_hashes
- + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
+ /* We can't use output_bfd->section_count here to find the top output
+ section index as some sections may have been removed, and
+ strip_excluded_output_sections doesn't renumber the indices. */
+ for (section = output_bfd->sections, top_index = 0;
+ section != NULL;
+ section = section->next)
+ {
+ if (top_index < section->index)
+ top_index = section->index;
+ }
- sreloc = NULL;
+ htab->top_index = top_index;
+ amt = sizeof (asection *) * (top_index + 1);
+ input_list = bfd_zmalloc (amt);
+ htab->input_list = input_list;
+ if (input_list == NULL)
+ return -1;
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
+ return 1;
+}
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+/* The linker repeatedly calls this function for each TOC input section
+ and linker generated GOT section. Group input bfds such that the toc
+ within a group is less than 64k in size. Will break with cute linker
+ scripts that play games with dot in the output toc section. */
- switch (ELF64_R_TYPE (rel->r_info))
- {
- /* GOT16 relocations */
- case R_PPC64_GOT16:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_HI:
- case R_PPC64_GOT16_HA:
- case R_PPC64_GOT16_DS:
- case R_PPC64_GOT16_LO_DS:
- /* This symbol requires a global offset table entry. */
+void
+ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
+{
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
- if (sgot == NULL)
- {
- if (dynobj == NULL)
- elf_hash_table (info)->dynobj = dynobj = abfd;
- if (! _bfd_elf_create_got_section (dynobj, info))
- return false;
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- }
+ if (!htab->no_multi_toc)
+ {
+ bfd_vma addr = isec->output_offset + isec->output_section->vma;
+ bfd_vma off = addr - htab->toc_curr;
- if (srelgot == NULL
- && (h != NULL || info->shared))
- {
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- {
- srelgot = bfd_make_section (dynobj, ".rela.got");
- if (srelgot == NULL
- || ! bfd_set_section_flags (dynobj, srelgot,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, srelgot, 2))
- return false;
- }
- }
+ if (off + isec->size > 0x10000)
+ htab->toc_curr = addr;
- if (h != NULL)
- {
- if (h->got.refcount == -1)
- {
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- if (!bfd_elf64_link_record_dynamic_symbol (info, h))
- return false;
+ elf_gp (isec->owner) = (htab->toc_curr
+ - elf_gp (isec->output_section->owner)
+ + TOC_BASE_OFF);
+ }
+}
- /* Allocate space in the .got. */
- sgot->_raw_size += 8;
- /* Allocate relocation space. */
- srelgot->_raw_size += sizeof (Elf64_External_Rela);
+/* Called after the last call to the above function. */
- h->got.refcount = 1;
- }
- else
- h->got.refcount++;
- }
- else
- {
- /* This is a global offset table entry for a local symbol. */
- if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
-
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_alloc (abfd, size));
- if (local_got_refcounts == NULL)
- return false;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- memset (local_got_refcounts, -1, (size_t) size);
- }
- if (local_got_refcounts[r_symndx] == -1)
- {
- sgot->_raw_size += 8;
+void
+ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
- /* If we are generating a shared object, we need to
- output a R_PPC64_RELATIVE reloc so that the
- dynamic linker can adjust this GOT entry. */
- if (info->shared)
- srelgot->_raw_size += sizeof (Elf64_External_Rela);
+ htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
- local_got_refcounts[r_symndx] = 1;
- }
- else
- local_got_refcounts[r_symndx]++;
- }
- break;
+ /* toc_curr tracks the TOC offset used for code sections below in
+ ppc64_elf_next_input_section. Start off at 0x8000. */
+ htab->toc_curr = TOC_BASE_OFF;
+}
- case R_PPC64_PLT64:
- case R_PPC64_PLT32:
- case R_PPC64_PLT16_LO:
- case R_PPC64_PLT16_HI:
- case R_PPC64_PLT16_HA:
- case R_PPC64_PLTGOT16_DS:
- case R_PPC64_PLTGOT16_LO_DS:
-#ifdef DEBUG
- fprintf (stderr, "Reloc requires a PLT entry\n");
-#endif
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
+/* No toc references were found in ISEC. If the code in ISEC makes no
+ calls, then there's no need to use toc adjusting stubs when branching
+ into ISEC. Actually, indirect calls from ISEC are OK as they will
+ load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
+ needed, and 2 if a cyclical call-graph was found but no other reason
+ for a stub was detected. If called from the top level, a return of
+ 2 means the same as a return of 0. */
- if (h == NULL)
- {
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
+static int
+toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
+{
+ Elf_Internal_Rela *relstart, *rel;
+ Elf_Internal_Sym *local_syms;
+ int ret;
+ struct ppc_link_hash_table *htab;
+
+ /* We know none of our code bearing sections will need toc stubs. */
+ if ((isec->flags & SEC_LINKER_CREATED) != 0)
+ return 0;
+
+ if (isec->size == 0)
+ return 0;
+
+ if (isec->output_section == NULL)
+ return 0;
+
+ if (isec->reloc_count == 0)
+ return 0;
+
+ relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
+ info->keep_memory);
+ if (relstart == NULL)
+ return -1;
+
+ /* Look for branches to outside of this section. */
+ local_syms = NULL;
+ ret = 0;
+ htab = ppc_hash_table (info);
+ for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sym_sec;
+ long *opd_adjust;
+ bfd_vma sym_value;
+ bfd_vma dest;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ if (r_type != R_PPC64_REL24
+ && r_type != R_PPC64_REL14
+ && r_type != R_PPC64_REL14_BRTAKEN
+ && r_type != R_PPC64_REL14_BRNTAKEN)
+ continue;
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
- return false;
- }
- if (h->plt.refcount == -1)
- {
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.refcount = 1;
- }
- else
- h->plt.refcount++;
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
+ isec->owner))
+ {
+ ret = -1;
break;
+ }
- /* The following relocations don't need to propagate the
- relocation if linking a shared object since they are
- section relative. */
- case R_PPC64_SECTOFF:
- case R_PPC64_SECTOFF_LO:
- case R_PPC64_SECTOFF_HI:
- case R_PPC64_SECTOFF_HA:
- case R_PPC64_SECTOFF_DS:
- case R_PPC64_SECTOFF_LO_DS:
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_HI:
- case R_PPC64_TOC16_HA:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- break;
+ /* Calls to dynamic lib functions go through a plt call stub
+ that uses r2. Branches to undefined symbols might be a call
+ using old-style dot symbols that can be satisfied by a plt
+ call into a new-style dynamic library. */
+ if (sym_sec == NULL)
+ {
+ struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
+ if (eh != NULL
+ && eh->oh != NULL
+ && eh->oh->elf.plt.plist != NULL)
+ {
+ ret = 1;
+ break;
+ }
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_PPC64_GNU_VTINHERIT:
- if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return false;
- break;
+ /* Ignore other undefined symbols. */
+ continue;
+ }
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_PPC64_GNU_VTENTRY:
- if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
+ /* Assume branches to other sections not included in the link need
+ stubs too, to cover -R and absolute syms. */
+ if (sym_sec->output_section == NULL)
+ {
+ ret = 1;
break;
+ }
- /* When creating a shared object, we must copy these
- relocs into the output file. We create a reloc
- section in dynobj and make room for the reloc. */
- case R_PPC64_REL64:
- case R_PPC64_REL32:
- case R_PPC64_REL24:
- case R_PPC64_REL14:
- case R_PPC64_REL14_BRTAKEN:
- case R_PPC64_REL14_BRNTAKEN:
+ if (h == NULL)
+ sym_value = sym->st_value;
+ else
+ {
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ abort ();
+ sym_value = h->root.u.def.value;
+ }
+ sym_value += rel->r_addend;
+
+ /* If this branch reloc uses an opd sym, find the code section. */
+ opd_adjust = get_opd_info (sym_sec);
+ if (opd_adjust != NULL)
+ {
if (h == NULL)
- break;
- /* fall through */
+ {
+ long adjust;
- case R_PPC64_TOC:
- /* fall through */
+ adjust = opd_adjust[sym->st_value / 8];
+ if (adjust == -1)
+ /* Assume deleted functions won't ever be called. */
+ continue;
+ sym_value += adjust;
+ }
- default:
- if (info->shared)
- {
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_check_relocs need to create relocation for %s\n",
- (h && h->root.root.string
- ? h->root.root.string
- : "<unknown>"));
-#endif
- if (sreloc == NULL)
- {
- const char *name;
+ dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
+ if (dest == (bfd_vma) -1)
+ continue;
+ }
+ else
+ dest = (sym_value
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return false;
+ /* Ignore branch to self. */
+ if (sym_sec == isec)
+ continue;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (abfd, sec),
- name + 5) == 0);
+ /* If the called function uses the toc, we need a stub. */
+ if (sym_sec->has_toc_reloc
+ || sym_sec->makes_toc_func_call)
+ {
+ ret = 1;
+ break;
+ }
- sreloc = bfd_get_section_by_name (dynobj, name);
- if (sreloc == NULL)
- {
- flagword flags;
+ /* Assume any branch that needs a long branch stub might in fact
+ need a plt_branch stub. A plt_branch stub uses r2. */
+ else if (dest - (isec->output_offset
+ + isec->output_section->vma
+ + rel->r_offset) + (1 << 25) >= (2 << 25))
+ {
+ ret = 1;
+ break;
+ }
- sreloc = bfd_make_section (dynobj, name);
- flags = (SEC_HAS_CONTENTS | SEC_READONLY
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- if ((sec->flags & SEC_ALLOC) != 0)
- flags |= SEC_ALLOC | SEC_LOAD;
- if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc, flags)
- || ! bfd_set_section_alignment (dynobj, sreloc, 2))
- return false;
- }
- }
+ /* If calling back to a section in the process of being tested, we
+ can't say for sure that no toc adjusting stubs are needed, so
+ don't return zero. */
+ else if (sym_sec->call_check_in_progress)
+ ret = 2;
- sreloc->_raw_size += sizeof (Elf64_External_Rela);
+ /* Branches to another section that itself doesn't have any TOC
+ references are OK. Recursively call ourselves to check. */
+ else if (sym_sec->id <= htab->top_id
+ && htab->stub_group[sym_sec->id].toc_off == 0)
+ {
+ int recur;
- /* FIXME: We should here do what the m68k and i386
- backends do: if the reloc is pc-relative, record it
- in case it turns out that the reloc is unnecessary
- because the symbol is forced local by versioning or
- we are linking with -Bdynamic. Fortunately this
- case is not frequent. */
- }
+ /* Mark current section as indeterminate, so that other
+ sections that call back to current won't be marked as
+ known. */
+ isec->call_check_in_progress = 1;
+ recur = toc_adjusting_stub_needed (info, sym_sec);
+ isec->call_check_in_progress = 0;
- break;
+ if (recur < 0)
+ {
+ /* An error. Exit. */
+ ret = -1;
+ break;
+ }
+ else if (recur <= 1)
+ {
+ /* Known result. Mark as checked and set section flag. */
+ htab->stub_group[sym_sec->id].toc_off = 1;
+ if (recur != 0)
+ {
+ sym_sec->makes_toc_func_call = 1;
+ ret = 1;
+ break;
+ }
+ }
+ else
+ {
+ /* Unknown result. Continue checking. */
+ ret = 2;
+ }
}
}
- return true;
+ if (local_syms != NULL
+ && (elf_tdata (isec->owner)->symtab_hdr.contents
+ != (unsigned char *) local_syms))
+ free (local_syms);
+ if (elf_section_data (isec)->relocs != relstart)
+ free (relstart);
+
+ return ret;
}
-/* Return the section that should be marked against GC for a given
- relocation. */
+/* The linker repeatedly calls this function for each input section,
+ in the order that input sections are linked into output sections.
+ Build lists of input sections to determine groupings between which
+ we may insert linker stubs. */
-static asection *
-ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- Elf_Internal_Rela *rel;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
+bfd_boolean
+ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
{
- if (h != NULL)
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+
+ if ((isec->output_section->flags & SEC_CODE) != 0
+ && isec->output_section->index <= htab->top_index)
+ {
+ asection **list = htab->input_list + isec->output_section->index;
+ /* Steal the link_sec pointer for our list. */
+#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
+ /* This happens to make the list in reverse order,
+ which is what we want. */
+ PREV_SEC (isec) = *list;
+ *list = isec;
+ }
+
+ if (htab->multi_toc_needed)
{
- switch (ELF64_R_TYPE (rel->r_info))
+ /* If a code section has a function that uses the TOC then we need
+ to use the right TOC (obviously). Also, make sure that .opd gets
+ the correct TOC value for R_PPC64_TOC relocs that don't have or
+ can't find their function symbol (shouldn't ever happen now).
+ Also specially treat .fixup for the linux kernel. .fixup
+ contains branches, but only back to the function that hit an
+ exception. */
+ if (isec->has_toc_reloc
+ || (isec->flags & SEC_CODE) == 0
+ || strcmp (isec->name, ".fixup") == 0)
{
- case R_PPC64_GNU_VTINHERIT:
- case R_PPC64_GNU_VTENTRY:
- break;
+ if (elf_gp (isec->owner) != 0)
+ htab->toc_curr = elf_gp (isec->owner);
+ }
+ else if (htab->stub_group[isec->id].toc_off == 0)
+ {
+ int ret = toc_adjusting_stub_needed (info, isec);
+ if (ret < 0)
+ return FALSE;
+ else
+ isec->makes_toc_func_call = ret & 1;
+ }
+ }
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
+ /* Functions that don't use the TOC can belong in any TOC group.
+ Use the last TOC base. This happens to make _init and _fini
+ pasting work. */
+ htab->stub_group[isec->id].toc_off = htab->toc_curr;
+ return TRUE;
+}
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
+/* See whether we can group stub sections together. Grouping stub
+ sections may result in fewer stubs. More importantly, we need to
+ put all .init* and .fini* stubs at the beginning of the .init or
+ .fini output sections respectively, because glibc splits the
+ _init and _fini functions into multiple parts. Putting a stub in
+ the middle of a function is not a good idea. */
- default:
- break;
- }
+static void
+group_sections (struct ppc_link_hash_table *htab,
+ bfd_size_type stub_group_size,
+ bfd_boolean stubs_always_before_branch)
+{
+ asection **list;
+ bfd_size_type stub14_group_size;
+ bfd_boolean suppress_size_errors;
+
+ suppress_size_errors = FALSE;
+ stub14_group_size = stub_group_size;
+ if (stub_group_size == 1)
+ {
+ /* Default values. */
+ if (stubs_always_before_branch)
+ {
+ stub_group_size = 0x1e00000;
+ stub14_group_size = 0x7800;
+ }
+ else
+ {
+ stub_group_size = 0x1c00000;
+ stub14_group_size = 0x7000;
}
+ suppress_size_errors = TRUE;
}
- else
+
+ list = htab->input_list + htab->top_index;
+ do
{
- if (! (elf_bad_symtab (abfd)
- && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
- && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
- && sym->st_shndx != SHN_COMMON))
+ asection *tail = *list;
+ while (tail != NULL)
{
- return bfd_section_from_elf_index (abfd, sym->st_shndx);
+ asection *curr;
+ asection *prev;
+ bfd_size_type total;
+ bfd_boolean big_sec;
+ bfd_vma curr_toc;
+
+ curr = tail;
+ total = tail->size;
+ big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
+ ? stub14_group_size : stub_group_size);
+ if (big_sec && !suppress_size_errors)
+ (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
+ tail->owner, tail);
+ curr_toc = htab->stub_group[tail->id].toc_off;
+
+ while ((prev = PREV_SEC (curr)) != NULL
+ && ((total += curr->output_offset - prev->output_offset)
+ < (ppc64_elf_section_data (prev)->has_14bit_branch
+ ? stub14_group_size : stub_group_size))
+ && htab->stub_group[prev->id].toc_off == curr_toc)
+ curr = prev;
+
+ /* OK, the size from the start of CURR to the end is less
+ than stub_group_size and thus can be handled by one stub
+ section. (or the tail section is itself larger than
+ stub_group_size, in which case we may be toast.) We
+ should really be keeping track of the total size of stubs
+ added here, as stubs contribute to the final output
+ section size. That's a little tricky, and this way will
+ only break if stubs added make the total size more than
+ 2^25, ie. for the default stub_group_size, if stubs total
+ more than 2097152 bytes, or nearly 75000 plt call stubs. */
+ do
+ {
+ prev = PREV_SEC (tail);
+ /* Set up this stub group. */
+ htab->stub_group[tail->id].link_sec = curr;
+ }
+ while (tail != curr && (tail = prev) != NULL);
+
+ /* But wait, there's more! Input sections up to stub_group_size
+ bytes before the stub section can be handled by it too.
+ Don't do this if we have a really large section after the
+ stubs, as adding more stubs increases the chance that
+ branches may not reach into the stub section. */
+ if (!stubs_always_before_branch && !big_sec)
+ {
+ total = 0;
+ while (prev != NULL
+ && ((total += tail->output_offset - prev->output_offset)
+ < (ppc64_elf_section_data (prev)->has_14bit_branch
+ ? stub14_group_size : stub_group_size))
+ && htab->stub_group[prev->id].toc_off == curr_toc)
+ {
+ tail = prev;
+ prev = PREV_SEC (tail);
+ htab->stub_group[tail->id].link_sec = curr;
+ }
+ }
+ tail = prev;
}
}
-
- return NULL;
+ while (list-- != htab->input_list);
+ free (htab->input_list);
+#undef PREV_SEC
}
-/* Update the got entry reference counts for the section being removed. */
+/* Determine and set the size of the stub section for a final link.
-static boolean
-ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+ The basic idea here is to examine all the relocations looking for
+ PC-relative calls to a target that is unreachable with a "bl"
+ instruction. */
+
+bfd_boolean
+ppc64_elf_size_stubs (bfd *output_bfd,
+ struct bfd_link_info *info,
+ bfd_signed_vma group_size,
+ asection *(*add_stub_section) (const char *, asection *),
+ void (*layout_sections_again) (void))
{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_signed_vma *local_got_refcounts;
- const Elf_Internal_Rela *rel, *relend;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
+ bfd_size_type stub_group_size;
+ bfd_boolean stubs_always_before_branch;
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+
+ /* Stash our params away. */
+ htab->add_stub_section = add_stub_section;
+ htab->layout_sections_again = layout_sections_again;
+ stubs_always_before_branch = group_size < 0;
+ if (group_size < 0)
+ stub_group_size = -group_size;
+ else
+ stub_group_size = group_size;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
+ group_sections (htab, stub_group_size, stubs_always_before_branch);
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- switch (ELF64_R_TYPE (rel->r_info))
- {
- case R_PPC64_GOT16:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_HI:
- case R_PPC64_GOT16_HA:
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->got.refcount > 0)
- h->got.refcount--;
- }
- else
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx]--;
- }
- break;
-
- case R_PPC64_PLT32:
- case R_PPC64_PLT16_LO:
- case R_PPC64_PLT16_HI:
- case R_PPC64_PLT16_HA:
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->plt.refcount > 0)
- h->plt.refcount--;
- }
- break;
+ while (1)
+ {
+ bfd *input_bfd;
+ unsigned int bfd_indx;
+ asection *stub_sec;
- default:
- break;
- }
+ htab->stub_iteration += 1;
- return true;
-}
+ for (input_bfd = info->input_bfds, bfd_indx = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next, bfd_indx++)
+ {
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *section;
+ Elf_Internal_Sym *local_syms = NULL;
+
+ if (!is_ppc64_elf_target (input_bfd->xvec))
+ continue;
+
+ /* We'll need the symbol table in a second. */
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ if (symtab_hdr->sh_info == 0)
+ continue;
+
+ /* Walk over each section attached to the input bfd. */
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
+
+ /* If there aren't any relocs, then there's nothing more
+ to do. */
+ if ((section->flags & SEC_RELOC) == 0
+ || (section->flags & SEC_ALLOC) == 0
+ || (section->flags & SEC_LOAD) == 0
+ || (section->flags & SEC_CODE) == 0
+ || section->reloc_count == 0)
+ continue;
-/* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
+ /* If this section is a link-once section that will be
+ discarded, then don't create any stubs. */
+ if (section->output_section == NULL
+ || section->output_section->owner != output_bfd)
+ continue;
-static boolean
-ppc64_elf_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
-{
- bfd *dynobj = elf_hash_table (info)->dynobj;
- asection *s;
- unsigned int power_of_two;
- bfd_vma plt_offset;
+ /* Get the relocs. */
+ internal_relocs
+ = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
+ info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_ret_free_local;
+
+ /* Now examine each relocation. */
+ irela = internal_relocs;
+ irelaend = irela + section->reloc_count;
+ for (; irela < irelaend; irela++)
+ {
+ enum elf_ppc64_reloc_type r_type;
+ unsigned int r_indx;
+ enum ppc_stub_type stub_type;
+ struct ppc_stub_hash_entry *stub_entry;
+ asection *sym_sec, *code_sec;
+ bfd_vma sym_value;
+ bfd_vma destination;
+ bfd_boolean ok_dest;
+ struct ppc_link_hash_entry *hash;
+ struct ppc_link_hash_entry *fdh;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ char *stub_name;
+ const asection *id_sec;
+ long *opd_adjust;
+
+ r_type = ELF64_R_TYPE (irela->r_info);
+ r_indx = ELF64_R_SYM (irela->r_info);
+
+ if (r_type >= R_PPC64_max)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_ret_free_internal;
+ }
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_adjust_dynamic_symbol called for %s\n",
- h->root.root.string);
-#endif
+ /* Only look for stubs on branch instructions. */
+ if (r_type != R_PPC64_REL24
+ && r_type != R_PPC64_REL14
+ && r_type != R_PPC64_REL14_BRTAKEN
+ && r_type != R_PPC64_REL14_BRNTAKEN)
+ continue;
+
+ /* Now determine the call target, its name, value,
+ section. */
+ if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
+ r_indx, input_bfd))
+ goto error_ret_free_internal;
+ hash = (struct ppc_link_hash_entry *) h;
+
+ ok_dest = FALSE;
+ fdh = NULL;
+ sym_value = 0;
+ if (hash == NULL)
+ {
+ sym_value = sym->st_value;
+ ok_dest = TRUE;
+ }
+ else if (hash->elf.root.type == bfd_link_hash_defined
+ || hash->elf.root.type == bfd_link_hash_defweak)
+ {
+ sym_value = hash->elf.root.u.def.value;
+ if (sym_sec->output_section != NULL)
+ ok_dest = TRUE;
+ }
+ else if (hash->elf.root.type == bfd_link_hash_undefweak
+ || hash->elf.root.type == bfd_link_hash_undefined)
+ {
+ /* Recognise an old ABI func code entry sym, and
+ use the func descriptor sym instead if it is
+ defined. */
+ if (hash->elf.root.root.string[0] == '.'
+ && (fdh = get_fdh (hash, htab)) != NULL)
+ {
+ if (fdh->elf.root.type == bfd_link_hash_defined
+ || fdh->elf.root.type == bfd_link_hash_defweak)
+ {
+ sym_sec = fdh->elf.root.u.def.section;
+ sym_value = fdh->elf.root.u.def.value;
+ if (sym_sec->output_section != NULL)
+ ok_dest = TRUE;
+ }
+ else
+ fdh = NULL;
+ }
+ }
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_ret_free_internal;
+ }
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
-
- /* If this is a function, alter the symbol to refer to global
- linkage code, which will be generated by ppc64_elf_relocate_section.
- Also, allocate a slot in the PLT. */
- if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
- {
- asection *splt, *sglink;
+ destination = 0;
+ if (ok_dest)
+ {
+ sym_value += irela->r_addend;
+ destination = (sym_value
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ }
- if (! elf_hash_table (info)->dynamic_sections_created
- || ((!info->shared || info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) != 0))
- {
- /* A PLT entry is not required/allowed when:
+ code_sec = sym_sec;
+ opd_adjust = get_opd_info (sym_sec);
+ if (opd_adjust != NULL)
+ {
+ bfd_vma dest;
- 1. We are not using ld.so; because then the PLT entry
- can't be set up, so we can't use one.
+ if (hash == NULL)
+ {
+ long adjust = opd_adjust[sym_value / 8];
+ if (adjust == -1)
+ continue;
+ sym_value += adjust;
+ }
+ dest = opd_entry_value (sym_sec, sym_value,
+ &code_sec, &sym_value);
+ if (dest != (bfd_vma) -1)
+ {
+ destination = dest;
+ if (fdh != NULL)
+ {
+ /* Fixup old ABI sym to point at code
+ entry. */
+ hash->elf.root.type = bfd_link_hash_defweak;
+ hash->elf.root.u.def.section = code_sec;
+ hash->elf.root.u.def.value = sym_value;
+ }
+ }
+ }
- 2. We know for certain that a symbol is defined in
- this object, because this object is the application,
- is linked with -Bsymbolic, or because the symbol is local.
+ /* Determine what (if any) linker stub is needed. */
+ stub_type = ppc_type_of_stub (section, irela, &hash,
+ destination);
- We used to end up here for GC if
- (info->shared && h->plt.refcount <= 0)
- We can't use plt.refcount here since
- ppc64_elf_check_relocs can't detect all needs for
- PLT. FIXME: Rewrite GC. */
+ if (stub_type != ppc_stub_plt_call)
+ {
+ /* Check whether we need a TOC adjusting stub.
+ Since the linker pastes together pieces from
+ different object files when creating the
+ _init and _fini functions, it may be that a
+ call to what looks like a local sym is in
+ fact a call needing a TOC adjustment. */
+ if (code_sec != NULL
+ && code_sec->output_section != NULL
+ && (htab->stub_group[code_sec->id].toc_off
+ != htab->stub_group[section->id].toc_off)
+ && (code_sec->has_toc_reloc
+ || code_sec->makes_toc_func_call))
+ stub_type = ppc_stub_long_branch_r2off;
+ }
- h->plt.offset = (bfd_vma) -1;
- h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
- return true;
- }
+ if (stub_type == ppc_stub_none)
+ continue;
- splt = bfd_get_section_by_name (dynobj, ".plt");
- sglink = bfd_get_section_by_name (dynobj, ".glink");
- BFD_ASSERT (splt != NULL && sglink != NULL);
+ /* __tls_get_addr calls might be eliminated. */
+ if (stub_type != ppc_stub_plt_call
+ && hash != NULL
+ && (hash == htab->tls_get_addr
+ || hash == htab->tls_get_addr_fd)
+ && section->has_tls_reloc
+ && irela != internal_relocs)
+ {
+ /* Get tls info. */
+ char *tls_mask;
+
+ if (!get_tls_mask (&tls_mask, NULL, &local_syms,
+ irela - 1, input_bfd))
+ goto error_ret_free_internal;
+ if (*tls_mask != 0)
+ continue;
+ }
- /* If it's a function entry point (the name starts with a dot)
- (FIXME: Could it ever be anything else?), find its
- corresponding function descriptor symbol and make sure it's
- output as a dynamic symbol. Create it as undefined if
- necessary. ppc64_elf_finish_dynamic_symbol will look it up
- again and create a JMP_SLOT reloc for it. FIXME: The second
- lookup could be avoided by adding a new flag to
- elf_link_hash_entry->elf_link_hash_flags. */
+ /* Support for grouping stub sections. */
+ id_sec = htab->stub_group[section->id].link_sec;
- if (h->root.root.string[0] == '.')
- {
- struct elf_link_hash_entry *fdh;
+ /* Get the name of this stub. */
+ stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
+ if (!stub_name)
+ goto error_ret_free_internal;
- /* FIXME: Follow bfd_link_hash_indirect? */
- fdh = elf_link_hash_lookup (elf_hash_table (info),
- h->root.root.string + 1,
- false, false, false);
+ stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
+ stub_name, FALSE, FALSE);
+ if (stub_entry != NULL)
+ {
+ /* The proper stub has already been created. */
+ free (stub_name);
+ continue;
+ }
- if (fdh == (struct elf_link_hash_entry *) NULL)
- {
- asymbol *newsym;
+ stub_entry = ppc_add_stub (stub_name, section, htab);
+ if (stub_entry == NULL)
+ {
+ free (stub_name);
+ error_ret_free_internal:
+ if (elf_section_data (section)->relocs == NULL)
+ free (internal_relocs);
+ error_ret_free_local:
+ if (local_syms != NULL
+ && (symtab_hdr->contents
+ != (unsigned char *) local_syms))
+ free (local_syms);
+ return FALSE;
+ }
- /* Create it as undefined. */
- newsym = bfd_make_empty_symbol (dynobj);
- BFD_ASSERT (newsym != NULL);
- /* FIXME: Need own copy of name? */
- newsym->name = h->root.root.string + 1;
- newsym->section = bfd_und_section_ptr;
- newsym->value = 0;
- newsym->flags = BSF_DYNAMIC | BSF_OBJECT;
+ stub_entry->stub_type = stub_type;
+ stub_entry->target_value = sym_value;
+ stub_entry->target_section = code_sec;
+ stub_entry->h = hash;
+ stub_entry->addend = irela->r_addend;
- if ( ! (_bfd_generic_link_add_one_symbol
- (info, dynobj, newsym->name, newsym->flags,
- newsym->section, newsym->value,
- NULL, /* string */
- true, /* copy */
- false, /*collect*/
- (struct bfd_link_hash_entry **) &fdh)))
- {
- /* FIXME: Print error message. */
- return false;
+ if (stub_entry->h != NULL)
+ htab->stub_globals += 1;
}
- fdh->root.type = bfd_link_hash_undefined;
-#ifdef DEBUG
- fprintf (stderr, "\tcreated %s", newsym->name);
-#endif
+
+ /* We're done with the internal relocs, free them. */
+ if (elf_section_data (section)->relocs != internal_relocs)
+ free (internal_relocs);
}
-#ifdef DEBUG
- else
- fprintf (stderr, "\tfound %s", fdh->root.root.string);
- fprintf (stderr, "\n");
-#endif
- BFD_ASSERT (fdh != NULL);
-
- /* Make sure it's output as a dynamic symbol. */
- if (fdh->dynindx == -1)
- {
- if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
- return false;
- }
- BFD_ASSERT (fdh->dynindx != -1);
- }
-
- /* If this is the first .plt entry, make room for the special
- first entry. */
- if (splt->_raw_size == 0)
- splt->_raw_size = PLT_INITIAL_ENTRY_SIZE;
-
- plt_offset = splt->_raw_size;
-
- /* FIXME: What about function pointer comparisons in 64-bit PPC?
- We can't use the same trick as 32-bit PPC, since we set the
- symbol to the linkage function. This will make function entry
- point comparison work as expected within one object, but not
- across object boundaries. From the ABI:
-
- In this ABI, the address of a function is actually the address of a
- function descriptor. A reference to a function, other than a function
- call, will normally load the address of the function descriptor from
- the global offset table. The dynamic linker will ensure that for a
- given function, the same address is used for all references to the
- function from any global offset table. Thus, function address
- comparisons will work as expected.
-
- When making a call to the function, the code may refer to the
- procedure linkage table entry, in order to permit lazy symbol
- resolution at run time. In order to support correct function address
- comparisons, the compiler should be careful to only generate
- references to the procedure linkage table entry for function calls.
- For any other use of a function, the compiler should use the real
- address.
-
- I don't see how this could ever work when passing a pointer to
- a function across an object boundary. The compiler has no
- way of knowing how to find the function descriptor for a
- function whose entrypoint is taken as an argument.
-
- Or should the compiler arrange so that the function descriptor
- address is passed and make the callee dig out the entry point
- from that? */
-#if 0
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- h->root.u.def.section = splt;
- h->root.u.def.value = plt_offset;
+ if (local_syms != NULL
+ && symtab_hdr->contents != (unsigned char *) local_syms)
+ {
+ if (!info->keep_memory)
+ free (local_syms);
+ else
+ symtab_hdr->contents = (unsigned char *) local_syms;
+ }
}
-#endif
- /* FIXME: How should a linkage symbol be defined? It shouldn't
- be global, since it can't be used by any other object than
- this one. Set ELF_LINK_FORCED_LOCAL? */
- h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = sglink;
- h->root.u.def.value = sglink->_raw_size;
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.offset = plt_offset;
+ /* We may have added some stubs. Find out the new size of the
+ stub sections. */
+ for (stub_sec = htab->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
+ {
+ stub_sec->rawsize = stub_sec->size;
+ stub_sec->size = 0;
+ stub_sec->reloc_count = 0;
+ stub_sec->flags &= ~SEC_RELOC;
+ }
+
+ htab->brlt->size = 0;
+ htab->brlt->reloc_count = 0;
+ htab->brlt->flags &= ~SEC_RELOC;
+ if (htab->relbrlt != NULL)
+ htab->relbrlt->size = 0;
- /* Make room for global linkage code in .glink. */
- sglink->_raw_size += PPC64_ELF_GLINK_SIZE;
+ bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
- /* Make room for this entry in PLT. */
- splt->_raw_size += PLT_ENTRY_SIZE;
+ for (stub_sec = htab->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
+ && stub_sec->rawsize != stub_sec->size)
+ break;
- /* We also need to make an entry in the .rela.plt section. */
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += sizeof (Elf64_External_Rela);
+ /* Exit from this loop when no stubs have been added, and no stubs
+ have changed size. */
+ if (stub_sec == NULL)
+ break;
- return true;
+ /* Ask the linker to do its stuff. */
+ (*htab->layout_sections_again) ();
}
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->weakdef != NULL)
+ /* It would be nice to strip htab->brlt from the output if the
+ section is empty, but it's too late. If we strip sections here,
+ the dynamic symbol table is corrupted since the section symbol
+ for the stripped section isn't written. */
+
+ return TRUE;
+}
+
+/* Called after we have determined section placement. If sections
+ move, we'll be called again. Provide a value for TOCstart. */
+
+bfd_vma
+ppc64_elf_toc (bfd *obfd)
+{
+ asection *s;
+ bfd_vma TOCstart;
+
+ /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
+ order. The TOC starts where the first of these sections starts. */
+ s = bfd_get_section_by_name (obfd, ".got");
+ if (s == NULL)
+ s = bfd_get_section_by_name (obfd, ".toc");
+ if (s == NULL)
+ s = bfd_get_section_by_name (obfd, ".tocbss");
+ if (s == NULL)
+ s = bfd_get_section_by_name (obfd, ".plt");
+ if (s == NULL)
{
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->root.u.def.value;
- return true;
+ /* This may happen for
+ o references to TOC base (SYM@toc / TOC[tc0]) without a
+ .toc directive
+ o bad linker script
+ o --gc-sections and empty TOC sections
+
+ FIXME: Warn user? */
+
+ /* Look for a likely section. We probably won't even be
+ using TOCstart. */
+ for (s = obfd->sections; s != NULL; s = s->next)
+ if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
+ == (SEC_ALLOC | SEC_SMALL_DATA))
+ break;
+ if (s == NULL)
+ for (s = obfd->sections; s != NULL; s = s->next)
+ if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
+ == (SEC_ALLOC | SEC_SMALL_DATA))
+ break;
+ if (s == NULL)
+ for (s = obfd->sections; s != NULL; s = s->next)
+ if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
+ break;
+ if (s == NULL)
+ for (s = obfd->sections; s != NULL; s = s->next)
+ if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
+ break;
}
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
+ TOCstart = 0;
+ if (s != NULL)
+ TOCstart = s->output_section->vma + s->output_offset;
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (info->shared)
- return true;
+ return TOCstart;
+}
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
- s = bfd_get_section_by_name (dynobj, ".dynbss");
- BFD_ASSERT (s != NULL);
+/* Build all the stubs associated with the current output file.
+ The stubs are kept in a hash table attached to the main linker
+ hash table. This function is called via gldelf64ppc_finish. */
+
+bfd_boolean
+ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
+ struct bfd_link_info *info,
+ char **stats)
+{
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ asection *stub_sec;
+ bfd_byte *p;
+ int stub_sec_count = 0;
+
+ htab->emit_stub_syms = emit_stub_syms;
+
+ /* Allocate memory to hold the linker stubs. */
+ for (stub_sec = htab->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
+ && stub_sec->size != 0)
+ {
+ stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
+ if (stub_sec->contents == NULL)
+ return FALSE;
+ /* We want to check that built size is the same as calculated
+ size. rawsize is a convenient location to use. */
+ stub_sec->rawsize = stub_sec->size;
+ stub_sec->size = 0;
+ }
+
+ if (htab->glink != NULL && htab->glink->size != 0)
+ {
+ unsigned int indx;
+ bfd_vma plt0;
+
+ /* Build the .glink plt call stub. */
+ if (htab->emit_stub_syms)
+ {
+ struct elf_link_hash_entry *h;
+ h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
+ if (h == NULL)
+ return FALSE;
+ if (h->root.type == bfd_link_hash_new)
+ {
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = htab->glink;
+ h->root.u.def.value = 8;
+ h->ref_regular = 1;
+ h->def_regular = 1;
+ h->ref_regular_nonweak = 1;
+ h->forced_local = 1;
+ h->non_elf = 0;
+ }
+ }
+ p = htab->glink->contents;
+ plt0 = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ - (htab->glink->output_section->vma
+ + htab->glink->output_offset
+ + 16));
+ bfd_put_64 (htab->glink->owner, plt0, p);
+ p += 8;
+ bfd_put_32 (htab->glink->owner, MFLR_R12, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, BCL_20_31, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, MFLR_R11, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, MTLR_R12, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, BCTR, p);
+ p += 4;
+ while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
+ {
+ bfd_put_32 (htab->glink->owner, NOP, p);
+ p += 4;
+ }
+
+ /* Build the .glink lazy link call stubs. */
+ indx = 0;
+ while (p < htab->glink->contents + htab->glink->size)
+ {
+ if (indx < 0x8000)
+ {
+ bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
+ p += 4;
+ }
+ else
+ {
+ bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
+ p += 4;
+ bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
+ p += 4;
+ }
+ bfd_put_32 (htab->glink->owner,
+ B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
+ indx++;
+ p += 4;
+ }
+ htab->glink->rawsize = p - htab->glink->contents;
+ }
- /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
- copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rela.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ if (htab->brlt->size != 0)
{
- asection *srel;
-
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
- BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf64_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
+ htab->brlt->size);
+ if (htab->brlt->contents == NULL)
+ return FALSE;
+ }
+ if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
+ {
+ htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
+ htab->relbrlt->size);
+ if (htab->relbrlt->contents == NULL)
+ return FALSE;
}
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 4)
- power_of_two = 4;
+ /* Build the stubs as directed by the stub hash table. */
+ bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
+
+ if (htab->relbrlt != NULL)
+ htab->relbrlt->reloc_count = 0;
+
+ for (stub_sec = htab->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
+ {
+ stub_sec_count += 1;
+ if (stub_sec->rawsize != stub_sec->size)
+ break;
+ }
- /* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
+ if (stub_sec != NULL
+ || htab->glink->rawsize != htab->glink->size)
{
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return false;
+ htab->stub_error = TRUE;
+ (*_bfd_error_handler) (_("stubs don't match calculated size"));
}
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
+ if (htab->stub_error)
+ return FALSE;
- /* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
-
- return true;
+ if (stats != NULL)
+ {
+ *stats = bfd_malloc (500);
+ if (*stats == NULL)
+ return FALSE;
+
+ sprintf (*stats, _("linker stubs in %u group%s\n"
+ " branch %lu\n"
+ " toc adjust %lu\n"
+ " long branch %lu\n"
+ " long toc adj %lu\n"
+ " plt call %lu"),
+ stub_sec_count,
+ stub_sec_count == 1 ? "" : "s",
+ htab->stub_count[ppc_stub_long_branch - 1],
+ htab->stub_count[ppc_stub_long_branch_r2off - 1],
+ htab->stub_count[ppc_stub_plt_branch - 1],
+ htab->stub_count[ppc_stub_plt_branch_r2off - 1],
+ htab->stub_count[ppc_stub_plt_call - 1]);
+ }
+ return TRUE;
}
-/* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
+/* This function undoes the changes made by add_symbol_adjust. */
-static boolean
-ppc_adjust_dynindx (h, cparg)
- struct elf_link_hash_entry *h;
- PTR cparg;
+static bfd_boolean
+undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
{
- int *cp = (int *) cparg;
+ struct ppc_link_hash_entry *eh;
-#ifdef DEBUG
- fprintf (stderr,
- "ppc_adjust_dynindx: h->dynindx = %ld, *cp = %d (%s)\n",
- h->dynindx, *cp,
- h->root.root.string ? h->root.root.string : "<unknown>");
-#endif
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
- if (h->dynindx != -1)
- h->dynindx += *cp;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
- return true;
+ eh = (struct ppc_link_hash_entry *) h;
+ if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
+ return TRUE;
+
+ eh->elf.root.type = bfd_link_hash_undefined;
+ return TRUE;
}
-/* Set the sizes of the dynamic sections. */
+void
+ppc64_elf_restore_symbols (struct bfd_link_info *info)
+{
+ struct ppc_link_hash_table *htab = ppc_hash_table (info);
+ elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
+}
-static boolean
-ppc64_elf_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+/* What to do when ld finds relocations against symbols defined in
+ discarded sections. */
+
+static unsigned int
+ppc64_elf_action_discarded (asection *sec)
{
- bfd *dynobj;
- asection *s;
- boolean plt;
- boolean relocs;
- boolean reltext;
+ if (strcmp (".opd", sec->name) == 0)
+ return 0;
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_size_dynamic_sections called\n");
-#endif
+ if (strcmp (".toc", sec->name) == 0)
+ return 0;
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
+ if (strcmp (".toc1", sec->name) == 0)
+ return 0;
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
- {
- s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
- else
- {
- /* We may have created entries in the .rela.got section.
- However, if we are not creating the dynamic sections, we will
- not actually use these entries. Reset the size of .rela.got
- which will cause it to get stripped from the output file
- below. */
- s = bfd_get_section_by_name (dynobj, ".rela.got");
- if (s != NULL)
- s->_raw_size = 0;
- }
+ return _bfd_elf_default_action_discarded (sec);
+}
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- plt = false;
- relocs = false;
- reltext = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- const char *name;
- boolean strip;
+/* The RELOCATE_SECTION function is called by the ELF backend linker
+ to handle the relocations for a section.
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
+ The relocs are always passed as Rela structures; if the section
+ actually uses Rel structures, the r_addend field will always be
+ zero.
- /* It's OK to base decisions on the section name, because none
- of the dynobj section names depend upon the input files. */
- name = bfd_get_section_name (dynobj, s);
+ This function is responsible for adjust the section contents as
+ necessary, and (if using Rela relocs and generating a
+ relocatable output file) adjusting the reloc addend as
+ necessary.
- strip = false;
+ This function does not have to worry about setting the reloc
+ address or the reloc symbol index.
- if (strcmp (name, ".plt") == 0)
- {
- if (s->_raw_size == 0)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- strip = true;
- }
- else
- {
- /* Remember whether there is a PLT. */
- plt = true;
- }
- }
- else if (strncmp (name, ".rela", 5) == 0)
- {
- if (s->_raw_size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- strip = true;
- }
- else
- {
- asection *target;
- const char *outname;
+ LOCAL_SYMS is a pointer to the swapped in local symbols.
- /* Remember whether there are any relocation sections. */
- relocs = true;
+ LOCAL_SECTIONS is an array giving the section in the input file
+ corresponding to the st_shndx field of each local symbol.
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL entry. */
- outname = bfd_get_section_name (output_bfd,
- s->output_section);
- target = bfd_get_section_by_name (output_bfd, outname + 5);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0
- && (target->flags & SEC_ALLOC) != 0)
- reltext = true;
+ The global hash table entry for the global symbols can be found
+ via elf_sym_hashes (input_bfd).
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- }
- else if (strcmp (name, ".got") != 0
- && strcmp (name, ".toc") != 0
- && strcmp (name, ".glink") != 0)
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
+ When generating relocatable output, this function must handle
+ STB_LOCAL/STT_SECTION symbols specially. The output symbol is
+ going to be the section symbol corresponding to the output
+ section, which means that the addend must be adjusted
+ accordingly. */
- if (strip)
- {
- _bfd_strip_section_from_output (info, s);
- continue;
- }
+static bfd_boolean
+ppc64_elf_relocate_section (bfd *output_bfd,
+ struct bfd_link_info *info,
+ bfd *input_bfd,
+ asection *input_section,
+ bfd_byte *contents,
+ Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
+{
+ struct ppc_link_hash_table *htab;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ struct got_entry **local_got_ents;
+ bfd_vma TOCstart;
+ bfd_boolean ret = TRUE;
+ bfd_boolean is_opd;
+ /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
+ bfd_boolean is_power4 = FALSE;
+ bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
-#ifdef DEBUG
- fprintf (stderr, "\tallocating %lu bytes for section %s\n",
- (unsigned long) s->_raw_size, name);
-#endif
+ /* Initialize howto table if needed. */
+ if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
+ ppc_howto_init ();
- /* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
- if (s->contents == NULL && s->_raw_size != 0)
- return false;
- }
+ htab = ppc_hash_table (info);
+
+ /* Don't relocate stub sections. */
+ if (input_section->owner == htab->stub_bfd)
+ return TRUE;
+
+ local_got_ents = elf_local_got_ents (input_bfd);
+ TOCstart = elf_gp (output_bfd);
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
- if (elf_hash_table (info)->dynamic_sections_created)
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
{
- /* Add some entries to the .dynamic section. We fill in the
- values later, in ppc64_elf_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
-#define add_dynamic_entry(TAG, VAL) \
- bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+ enum elf_ppc64_reloc_type r_type;
+ bfd_vma addend, orig_addend;
+ bfd_reloc_status_type r;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ struct elf_link_hash_entry *h_elf;
+ struct ppc_link_hash_entry *h;
+ struct ppc_link_hash_entry *fdh;
+ const char *sym_name;
+ unsigned long r_symndx, toc_symndx;
+ char tls_mask, tls_gd, tls_type;
+ char sym_type;
+ bfd_vma relocation;
+ bfd_boolean unresolved_reloc;
+ bfd_boolean warned;
+ unsigned long insn, mask;
+ struct ppc_stub_hash_entry *stub_entry;
+ bfd_vma max_br_offset;
+ bfd_vma from;
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ r_symndx = ELF64_R_SYM (rel->r_info);
- if (!info->shared)
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return false;
- }
+ /* For old style R_PPC64_TOC relocs with a zero symbol, use the
+ symbol of the previous ADDR64 reloc. The symbol gives us the
+ proper TOC base to use. */
+ if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
+ && rel != relocs
+ && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
+ && is_opd)
+ r_symndx = ELF64_R_SYM (rel[-1].r_info);
+
+ sym = NULL;
+ sec = NULL;
+ h_elf = NULL;
+ sym_name = NULL;
+ unresolved_reloc = FALSE;
+ warned = FALSE;
+ orig_addend = rel->r_addend;
- if (plt)
+ if (r_symndx < symtab_hdr->sh_info)
{
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_RELA)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return false;
- }
+ /* It's a local symbol. */
+ long *opd_adjust;
- if (relocs)
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+ sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
+ sym_type = ELF64_ST_TYPE (sym->st_info);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+ opd_adjust = get_opd_info (sec);
+ if (opd_adjust != NULL)
+ {
+ long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
+ if (adjust == -1)
+ relocation = 0;
+ else
+ {
+ /* If this is a relocation against the opd section sym
+ and we have edited .opd, adjust the reloc addend so
+ that ld -r and ld --emit-relocs output is correct.
+ If it is a reloc against some other .opd symbol,
+ then the symbol value will be adjusted later. */
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ rel->r_addend += adjust;
+ else
+ relocation += adjust;
+ }
+ }
+ }
+ else
{
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
- return false;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h_elf, sec, relocation,
+ unresolved_reloc, warned);
+ sym_name = h_elf->root.root.string;
+ sym_type = h_elf->type;
}
+ h = (struct ppc_link_hash_entry *) h_elf;
- if (reltext)
+ if (sec != NULL && elf_discarded_section (sec))
{
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return false;
+ /* For relocs against symbols from removed linkonce sections,
+ or sections discarded by a linker script, we just want the
+ section contents zeroed. Avoid any special processing. */
+ _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
+ contents + rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
}
- }
-#undef add_dynamic_entry
- /* If we are generating a shared library, we generate a section
- symbol for each output section. These are local symbols, which
- means that they must come first in the dynamic symbol table.
- That means we must increment the dynamic symbol index of every
- other dynamic symbol.
-
- FIXME: We assume that there will never be relocations to
- locations in linker-created sections that do not have
- externally-visible names. Instead, we should work out precisely
- which sections relocations are targetted at. */
- if (info->shared)
- {
- int c;
+ if (info->relocatable)
+ continue;
- for (c = 0, s = output_bfd->sections; s != NULL; s = s->next)
+ /* TLS optimizations. Replace instruction sequences and relocs
+ based on information we collected in tls_optimize. We edit
+ RELOCS so that --emit-relocs will output something sensible
+ for the final instruction stream. */
+ tls_mask = 0;
+ tls_gd = 0;
+ toc_symndx = 0;
+ if (IS_PPC64_TLS_RELOC (r_type))
{
- if ((s->flags & SEC_LINKER_CREATED) != 0
- || (s->flags & SEC_ALLOC) == 0)
+ if (h != NULL)
+ tls_mask = h->tls_mask;
+ else if (local_got_ents != NULL)
{
- elf_section_data (s)->dynindx = -1;
- continue;
+ char *lgot_masks;
+ lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
+ tls_mask = lgot_masks[r_symndx];
}
+ if (tls_mask == 0 && r_type == R_PPC64_TLS)
+ {
+ /* Check for toc tls entries. */
+ char *toc_tls;
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
-
- elf_section_data (s)->dynindx = c + 1;
+ if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
+ rel, input_bfd))
+ return FALSE;
- c++;
+ if (toc_tls)
+ tls_mask = *toc_tls;
+ }
}
- elf_link_hash_traverse (elf_hash_table (info),
- ppc_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
- }
-
- return true;
-}
-
-/* Called after we have seen all the input files/sections, but before
- final symbol resolution and section placement has been determined.
-
- We use this hook to provide a value for TOCstart, which we store in
- the output bfd elf_gp, then we call the generic ELF final link
- routine. */
-
-static boolean
-ppc64_elf_final_link (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
-{
- if (! info->relocateable)
- {
- asection *s;
- bfd_vma TOCstart;
-
- /* The TOC consists of sections .got, .toc, .tocbss, .plt in this
- order. The TOC starts where the first of these sections starts. */
- s = bfd_get_section_by_name (abfd, ".got");
- if (s == NULL)
- s = bfd_get_section_by_name (abfd, ".toc");
- if (s == NULL)
- s = bfd_get_section_by_name (abfd, ".tocbss");
- if (s == NULL)
- s = bfd_get_section_by_name (abfd, ".plt");
- if (s == NULL)
+ /* Check that tls relocs are used with tls syms, and non-tls
+ relocs are used with non-tls syms. */
+ if (r_symndx != 0
+ && r_type != R_PPC64_NONE
+ && (h == NULL
+ || h->elf.root.type == bfd_link_hash_defined
+ || h->elf.root.type == bfd_link_hash_defweak)
+ && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
{
- /* This may happen for
- o references to TOC base (SYM@toc / TOC[tc0]) without a
- .toc directive
- o bad linker script
- o --gc-sections and empty TOC sections
-
- FIXME: Warn user? */
-
- /* Look for a likely section. We probably won't even be
- using TOCstart. */
- for (s = abfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
- == (SEC_ALLOC | SEC_SMALL_DATA))
- break;
- if (s == NULL)
- for (s = abfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
- == (SEC_ALLOC | SEC_SMALL_DATA))
- break;
- if (s == NULL)
- for (s = abfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
- break;
- if (s == NULL)
- for (s = abfd->sections; s != NULL; s = s->next)
- if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
- break;
+ if (r_type == R_PPC64_TLS && tls_mask != 0)
+ /* R_PPC64_TLS is OK against a symbol in the TOC. */
+ ;
+ else
+ (*_bfd_error_handler)
+ (sym_type == STT_TLS
+ ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
+ : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ ppc64_elf_howto_table[r_type]->name,
+ sym_name);
}
- TOCstart = 0;
- if (s != NULL)
- TOCstart = s->output_section->vma + s->output_offset;
-
- elf_gp (abfd) = TOCstart;
- }
-
- /* Invoke the regular gc ELF backend linker to do all the work. */
- return _bfd_elf64_gc_common_final_link (abfd, info);
-}
+ /* Ensure reloc mapping code below stays sane. */
+ if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
+ || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
+ || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
+ || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
+ || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
+ || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
+ || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
+ || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
+ || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
+ || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
+ abort ();
+
+ switch (r_type)
+ {
+ default:
+ break;
-/* Set up any other section flags and such that may be necessary. */
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ {
+ /* Check for toc tls entries. */
+ char *toc_tls;
+ int retval;
-static boolean
-ppc64_elf_fake_sections (abfd, shdr, asect)
- bfd *abfd ATTRIBUTE_UNUSED;
- Elf64_Internal_Shdr *shdr;
- asection *asect;
-{
- if ((asect->flags & SEC_EXCLUDE) != 0)
- shdr->sh_flags |= SHF_EXCLUDE;
+ retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
+ rel, input_bfd);
+ if (retval == 0)
+ return FALSE;
- if ((asect->flags & SEC_SORT_ENTRIES) != 0)
- shdr->sh_type = SHT_ORDERED;
+ if (toc_tls)
+ {
+ tls_mask = *toc_tls;
+ if (r_type == R_PPC64_TOC16_DS
+ || r_type == R_PPC64_TOC16_LO_DS)
+ {
+ if (tls_mask != 0
+ && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
+ goto toctprel;
+ }
+ else
+ {
+ /* If we found a GD reloc pair, then we might be
+ doing a GD->IE transition. */
+ if (retval == 2)
+ {
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_ldgd_opt;
+ }
+ else if (retval == 3)
+ {
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
+ goto tls_ldgd_opt;
+ }
+ }
+ }
+ }
+ break;
- return true;
-}
+ case R_PPC64_GOT_TPREL16_DS:
+ case R_PPC64_GOT_TPREL16_LO_DS:
+ if (tls_mask != 0
+ && (tls_mask & TLS_TPREL) == 0)
+ {
+ toctprel:
+ insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
+ insn &= 31 << 21;
+ insn |= 0x3c0d0000; /* addis 0,13,0 */
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
+ r_type = R_PPC64_TPREL16_HA;
+ if (toc_symndx != 0)
+ {
+ rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
+ /* We changed the symbol. Start over in order to
+ get h, sym, sec etc. right. */
+ rel--;
+ continue;
+ }
+ else
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ break;
-/* The RELOCATE_SECTION function is called by the ELF backend linker
- to handle the relocations for a section.
+ case R_PPC64_TLS:
+ if (tls_mask != 0
+ && (tls_mask & TLS_TPREL) == 0)
+ {
+ bfd_vma rtra;
+ insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
+ if ((insn & ((0x3f << 26) | (31 << 11)))
+ == ((31 << 26) | (13 << 11)))
+ rtra = insn & ((1 << 26) - (1 << 16));
+ else if ((insn & ((0x3f << 26) | (31 << 16)))
+ == ((31 << 26) | (13 << 16)))
+ rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
+ else
+ abort ();
+ if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
+ /* add -> addi. */
+ insn = 14 << 26;
+ else if ((insn & (31 << 1)) == 23 << 1
+ && ((insn & (31 << 6)) < 14 << 6
+ || ((insn & (31 << 6)) >= 16 << 6
+ && (insn & (31 << 6)) < 24 << 6)))
+ /* load and store indexed -> dform. */
+ insn = (32 | ((insn >> 6) & 31)) << 26;
+ else if ((insn & (31 << 1)) == 21 << 1
+ && (insn & (0x1a << 6)) == 0)
+ /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
+ insn = (((58 | ((insn >> 6) & 4)) << 26)
+ | ((insn >> 6) & 1));
+ else if ((insn & (31 << 1)) == 21 << 1
+ && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
+ /* lwax -> lwa. */
+ insn = (58 << 26) | 2;
+ else
+ abort ();
+ insn |= rtra;
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ /* Was PPC64_TLS which sits on insn boundary, now
+ PPC64_TPREL16_LO which is at low-order half-word. */
+ rel->r_offset += d_offset;
+ r_type = R_PPC64_TPREL16_LO;
+ if (toc_symndx != 0)
+ {
+ rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
+ /* We changed the symbol. Start over in order to
+ get h, sym, sec etc. right. */
+ rel--;
+ continue;
+ }
+ else
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ break;
- The relocs are always passed as Rela structures; if the section
- actually uses Rel structures, the r_addend field will always be
- zero.
+ case R_PPC64_GOT_TLSGD16_HI:
+ case R_PPC64_GOT_TLSGD16_HA:
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_gdld_hi;
+ break;
- This function is responsible for adjust the section contents as
- necessary, and (if using Rela relocs and generating a
- relocateable output file) adjusting the reloc addend as
- necessary.
+ case R_PPC64_GOT_TLSLD16_HI:
+ case R_PPC64_GOT_TLSLD16_HA:
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
+ {
+ tls_gdld_hi:
+ if ((tls_mask & tls_gd) != 0)
+ r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
+ + R_PPC64_GOT_TPREL16_DS);
+ else
+ {
+ bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
+ rel->r_offset -= d_offset;
+ r_type = R_PPC64_NONE;
+ }
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ break;
- This function does not have to worry about setting the reloc
- address or the reloc symbol index.
+ case R_PPC64_GOT_TLSGD16:
+ case R_PPC64_GOT_TLSGD16_LO:
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_ldgd_opt;
+ break;
- LOCAL_SYMS is a pointer to the swapped in local symbols.
+ case R_PPC64_GOT_TLSLD16:
+ case R_PPC64_GOT_TLSLD16_LO:
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
+ {
+ bfd_vma insn1, insn2, insn3;
+ bfd_vma offset;
+
+ tls_ldgd_opt:
+ /* We know that the next reloc is on a tls_get_addr
+ call, since ppc64_elf_tls_optimize checks this. */
+ offset = rel[1].r_offset;
+ insn1 = bfd_get_32 (output_bfd,
+ contents + rel->r_offset - d_offset);
+ insn3 = bfd_get_32 (output_bfd,
+ contents + offset + 4);
+ if ((tls_mask & tls_gd) != 0)
+ {
+ /* IE */
+ insn1 &= (1 << 26) - (1 << 2);
+ insn1 |= 58 << 26; /* ld */
+ insn2 = 0x7c636a14; /* add 3,3,13 */
+ rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
+ R_PPC64_NONE);
+ if ((tls_mask & TLS_EXPLICIT) == 0)
+ r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
+ + R_PPC64_GOT_TPREL16_DS);
+ else
+ r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ else
+ {
+ /* LE */
+ insn1 = 0x3c6d0000; /* addis 3,13,0 */
+ insn2 = 0x38630000; /* addi 3,3,0 */
+ if (tls_gd == 0)
+ {
+ /* Was an LD reloc. */
+ r_symndx = 0;
+ rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
+ rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
+ }
+ else if (toc_symndx != 0)
+ r_symndx = toc_symndx;
+ r_type = R_PPC64_TPREL16_HA;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ rel[1].r_info = ELF64_R_INFO (r_symndx,
+ R_PPC64_TPREL16_LO);
+ rel[1].r_offset += d_offset;
+ }
+ if (insn3 == NOP
+ || insn3 == CROR_151515 || insn3 == CROR_313131)
+ {
+ insn3 = insn2;
+ insn2 = NOP;
+ rel[1].r_offset += 4;
+ }
+ bfd_put_32 (output_bfd, insn1,
+ contents + rel->r_offset - d_offset);
+ bfd_put_32 (output_bfd, insn2, contents + offset);
+ bfd_put_32 (output_bfd, insn3, contents + offset + 4);
+ if (tls_gd == 0 || toc_symndx != 0)
+ {
+ /* We changed the symbol. Start over in order
+ to get h, sym, sec etc. right. */
+ rel--;
+ continue;
+ }
+ }
+ break;
- LOCAL_SECTIONS is an array giving the section in the input file
- corresponding to the st_shndx field of each local symbol.
+ case R_PPC64_DTPMOD64:
+ if (rel + 1 < relend
+ && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
+ && rel[1].r_offset == rel->r_offset + 8)
+ {
+ if ((tls_mask & TLS_GD) == 0)
+ {
+ rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
+ if ((tls_mask & TLS_TPRELGD) != 0)
+ r_type = R_PPC64_TPREL64;
+ else
+ {
+ bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
+ r_type = R_PPC64_NONE;
+ }
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ }
+ else
+ {
+ if ((tls_mask & TLS_LD) == 0)
+ {
+ bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
+ r_type = R_PPC64_NONE;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ }
+ break;
- The global hash table entry for the global symbols can be found
- via elf_sym_hashes (input_bfd).
+ case R_PPC64_TPREL64:
+ if ((tls_mask & TLS_TPREL) == 0)
+ {
+ r_type = R_PPC64_NONE;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ break;
+ }
- When generating relocateable output, this function must handle
- STB_LOCAL/STT_SECTION symbols specially. The output symbol is
- going to be the section symbol corresponding to the output
- section, which means that the addend must be adjusted
- accordingly. */
+ /* Handle other relocations that tweak non-addend part of insn. */
+ insn = 0;
+ max_br_offset = 1 << 25;
+ addend = rel->r_addend;
+ switch (r_type)
+ {
+ default:
+ break;
-static boolean
-ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
-{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd *dynobj;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
- asection *sreloc;
- asection *splt;
- asection *sgot;
- bfd_vma *local_got_offsets;
- bfd_vma TOCstart;
- boolean ret = true;
-
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_relocate_section called for %s section %s, %ld relocations%s\n",
- bfd_get_filename (input_bfd),
- bfd_section_name (input_bfd, input_section),
- (long) input_section->reloc_count,
- (info->relocateable) ? " (relocatable)" : "");
-#endif
+ /* Branch taken prediction relocations. */
+ case R_PPC64_ADDR14_BRTAKEN:
+ case R_PPC64_REL14_BRTAKEN:
+ insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
+ /* Fall thru. */
- if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
- /* Initialize howto table if needed. */
- ppc_howto_init ();
+ /* Branch not taken prediction relocations. */
+ case R_PPC64_ADDR14_BRNTAKEN:
+ case R_PPC64_REL14_BRNTAKEN:
+ insn |= bfd_get_32 (output_bfd,
+ contents + rel->r_offset) & ~(0x01 << 21);
+ /* Fall thru. */
- local_got_offsets = elf_local_got_offsets (input_bfd);
+ case R_PPC64_REL14:
+ max_br_offset = 1 << 15;
+ /* Fall thru. */
- sreloc = NULL;
- splt = NULL;
- sgot = NULL;
- dynobj = elf_hash_table (info)->dynobj;
- if (dynobj != NULL)
- {
- splt = bfd_get_section_by_name (dynobj, ".plt");
- sgot = bfd_get_section_by_name (dynobj, ".got");
- }
- TOCstart = elf_gp (output_bfd);
+ case R_PPC64_REL24:
+ /* Calls to functions with a different TOC, such as calls to
+ shared objects, need to alter the TOC pointer. This is
+ done using a linkage stub. A REL24 branching to these
+ linkage stubs needs to be followed by a nop, as the nop
+ will be replaced with an instruction to restore the TOC
+ base pointer. */
+ stub_entry = NULL;
+ fdh = h;
+ if (((h != NULL
+ && (((fdh = h->oh) != NULL
+ && fdh->elf.plt.plist != NULL)
+ || (fdh = h)->elf.plt.plist != NULL))
+ || (sec != NULL
+ && sec->output_section != NULL
+ && sec->id <= htab->top_id
+ && (htab->stub_group[sec->id].toc_off
+ != htab->stub_group[input_section->id].toc_off)))
+ && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
+ rel, htab)) != NULL
+ && (stub_entry->stub_type == ppc_stub_plt_call
+ || stub_entry->stub_type == ppc_stub_plt_branch_r2off
+ || stub_entry->stub_type == ppc_stub_long_branch_r2off))
+ {
+ bfd_boolean can_plt_call = FALSE;
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- enum elf_ppc_reloc_type r_type;
- bfd_vma offset;
- bfd_vma addend;
- bfd_reloc_status_type r;
- Elf_Internal_Sym *sym;
- asection *sec;
- struct elf_link_hash_entry *h;
- const char *sym_name;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- bfd_vma relocation;
- long insn;
+ if (rel->r_offset + 8 <= input_section->size)
+ {
+ unsigned long nop;
+ nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
+ if (nop == NOP
+ || nop == CROR_151515 || nop == CROR_313131)
+ {
+ bfd_put_32 (input_bfd, LD_R2_40R1,
+ contents + rel->r_offset + 4);
+ can_plt_call = TRUE;
+ }
+ }
- r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
- offset = rel->r_offset;
- addend = rel->r_addend;
- r = bfd_reloc_other;
- sym = (Elf_Internal_Sym *) 0;
- sec = (asection *) 0;
- h = (struct elf_link_hash_entry *) 0;
- sym_name = (const char *) 0;
-
- /* Unknown relocation handling. */
- if ((unsigned) r_type >= (unsigned) R_PPC_max
- || !ppc64_elf_howto_table[(int) r_type])
- {
- (*_bfd_error_handler) (_("%s: unknown relocation type %d"),
- bfd_get_filename (input_bfd),
- (int) r_type);
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
- }
+ if (!can_plt_call)
+ {
+ if (stub_entry->stub_type == ppc_stub_plt_call)
+ {
+ /* If this is a plain branch rather than a branch
+ and link, don't require a nop. However, don't
+ allow tail calls in a shared library as they
+ will result in r2 being corrupted. */
+ unsigned long br;
+ br = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ if (info->executable && (br & 1) == 0)
+ can_plt_call = TRUE;
+ else
+ stub_entry = NULL;
+ }
+ else if (h != NULL
+ && strcmp (h->elf.root.root.string,
+ ".__libc_start_main") == 0)
+ {
+ /* Allow crt1 branch to go via a toc adjusting stub. */
+ can_plt_call = TRUE;
+ }
+ else
+ {
+ if (strcmp (input_section->output_section->name,
+ ".init") == 0
+ || strcmp (input_section->output_section->name,
+ ".fini") == 0)
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): automatic multiple TOCs "
+ "not supported using your crt files; "
+ "recompile with -mminimal-toc or upgrade gcc"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset);
+ else
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): sibling call optimization to `%s' "
+ "does not allow automatic multiple TOCs; "
+ "recompile with -mminimal-toc or "
+ "-fno-optimize-sibling-calls, "
+ "or make `%s' extern"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ sym_name,
+ sym_name);
+ bfd_set_error (bfd_error_bad_value);
+ ret = FALSE;
+ }
+ }
- howto = ppc64_elf_howto_table[(int) r_type];
- r_symndx = ELF64_R_SYM (rel->r_info);
+ if (can_plt_call
+ && stub_entry->stub_type == ppc_stub_plt_call)
+ unresolved_reloc = FALSE;
+ }
- if (info->relocateable)
- {
- /* This is a relocatable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
+ if (stub_entry == NULL
+ && get_opd_info (sec) != NULL)
{
- sym = local_syms + r_symndx;
- if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ /* The branch destination is the value of the opd entry. */
+ bfd_vma off = (relocation + addend
+ - sec->output_section->vma
+ - sec->output_offset);
+ bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
+ if (dest != (bfd_vma) -1)
{
- sec = local_sections[r_symndx];
- addend = rel->r_addend += sec->output_offset + sym->st_value;
+ relocation = dest;
+ addend = 0;
}
}
-#ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int) r_type,
- r_symndx,
- (long) offset,
- (long) addend);
-#endif
- continue;
- }
-
- /* This is a final link. */
-
- /* Set `relocation'. */
- if (r_type == R_PPC64_TOC)
- {
- /* Relocation value is TOC base. Symbol is ignored. */
- relocation = TOCstart + TOC_BASE_OFF;
- }
- else if (r_symndx < symtab_hdr->sh_info)
- {
- /* It's a local symbol. */
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- sym_name = "<local symbol>";
+ /* If the branch is out of reach we ought to have a long
+ branch stub. */
+ from = (rel->r_offset
+ + input_section->output_offset
+ + input_section->output_section->vma);
+
+ if (stub_entry == NULL
+ && (relocation + addend - from + max_br_offset
+ >= 2 * max_br_offset)
+ && r_type != R_PPC64_ADDR14_BRTAKEN
+ && r_type != R_PPC64_ADDR14_BRNTAKEN)
+ stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
+ htab);
+
+ if (stub_entry != NULL)
+ {
+ /* Munge up the value and addend so that we call the stub
+ rather than the procedure directly. */
+ relocation = (stub_entry->stub_offset
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma);
+ addend = 0;
+ }
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
- else
- {
- /* It's a global symbol. */
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- sym_name = h->root.root.string;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
+ if (insn != 0)
{
- sec = h->root.u.def.section;
- if ((r_type == R_PPC64_PLT32
- && h->plt.offset != (bfd_vma) -1)
- || ((r_type == R_PPC64_GOT16
- || r_type == R_PPC64_GOT16_LO
- || r_type == R_PPC64_GOT16_HI
- || r_type == R_PPC64_GOT16_HA
- || r_type == R_PPC64_GOT16_DS
- || r_type == R_PPC64_GOT16_LO_DS)
- && elf_hash_table (info)->dynamic_sections_created
- && (! info->shared
- || (! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- || (info->shared
- && ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)
- && (input_section->flags & SEC_ALLOC) != 0
- && (r_type == R_PPC64_ADDR64
- || r_type == R_PPC64_ADDR32
- || r_type == R_PPC64_ADDR24
- || r_type == R_PPC64_ADDR16
- || r_type == R_PPC64_ADDR16_LO
- || r_type == R_PPC64_ADDR16_DS
- || r_type == R_PPC64_ADDR16_LO_DS
- || r_type == R_PPC64_ADDR16_HI
- || r_type == R_PPC64_ADDR16_HA
- || r_type == R_PPC64_ADDR16_HIGHER
- || r_type == R_PPC64_ADDR16_HIGHERA
- || r_type == R_PPC64_ADDR16_HIGHEST
- || r_type == R_PPC64_ADDR16_HIGHESTA
- || r_type == R_PPC64_ADDR14
- || r_type == R_PPC64_ADDR14_BRTAKEN
- || r_type == R_PPC64_ADDR14_BRNTAKEN
- || r_type == R_PPC64_COPY
- || r_type == R_PPC64_GLOB_DAT
- || r_type == R_PPC64_JMP_SLOT
- || r_type == R_PPC64_UADDR64
- || r_type == R_PPC64_UADDR32
- || r_type == R_PPC64_UADDR16)))
+ if (is_power4)
{
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- relocation = 0;
+ /* Set 'a' bit. This is 0b00010 in BO field for branch
+ on CR(BI) insns (BO == 001at or 011at), and 0b01000
+ for branch on CTR insns (BO == 1a00t or 1a01t). */
+ if ((insn & (0x14 << 21)) == (0x04 << 21))
+ insn |= 0x02 << 21;
+ else if ((insn & (0x14 << 21)) == (0x10 << 21))
+ insn |= 0x08 << 21;
+ else
+ break;
}
else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
- && !info->no_undefined)
- relocation = 0;
- else
+ {
+ /* Invert 'y' bit if not the default. */
+ if ((bfd_signed_vma) (relocation + addend - from) < 0)
+ insn ^= 0x01 << 21;
+ }
+
+ bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
+ }
+
+ /* NOP out calls to undefined weak functions.
+ We can thus call a weak function without first
+ checking whether the function is defined. */
+ else if (h != NULL
+ && h->elf.root.type == bfd_link_hash_undefweak
+ && r_type == R_PPC64_REL24
+ && relocation == 0
+ && addend == 0)
{
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_offset, (!info->shared
- || info->no_undefined
- || ELF_ST_VISIBILITY (h->other)))))
- return false;
- relocation = 0;
- }
- }
-
- switch ((int) r_type)
- {
- case (int) R_PPC64_ADDR16_DS:
- case (int) R_PPC64_ADDR16_LO_DS:
- case (int) R_PPC64_GOT16_DS:
- case (int) R_PPC64_GOT16_LO_DS:
- case (int) R_PPC64_PLT16_LO_DS:
- case (int) R_PPC64_SECTOFF_DS:
- case (int) R_PPC64_SECTOFF_LO_DS:
- case (int) R_PPC64_TOC16_DS:
- case (int) R_PPC64_TOC16_LO_DS:
- case (int) R_PPC64_PLTGOT16_DS:
- case (int) R_PPC64_PLTGOT16_LO_DS:
- if (((relocation + addend) & 3) != 0)
- {
- (*_bfd_error_handler) (_("%s: error: relocation %s not a multiple of 4"),
- bfd_get_filename (input_bfd),
- howto->name);
- bfd_set_error (bfd_error_bad_value);
- ret = false;
+ bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
continue;
}
+ break;
}
/* Set `addend'. */
- switch ((int) r_type)
+ tls_type = 0;
+ switch (r_type)
{
default:
- (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"),
- bfd_get_filename (input_bfd),
- (int) r_type, sym_name);
+ (*_bfd_error_handler)
+ (_("%B: unknown relocation type %d for symbol %s"),
+ input_bfd, (int) r_type, sym_name);
bfd_set_error (bfd_error_bad_value);
- ret = false;
+ ret = FALSE;
continue;
- /* Relocations that may need to be propagated if this is a shared
- object. */
- case (int) R_PPC64_REL24:
- case (int) R_PPC64_ADDR24:
- /* An ADDR24 or REL24 branching to a linkage function may be
- followed by a nop that we have to replace with an ld in
- order to restore the TOC base pointer. Only calls to
- shared objects need to alter the TOC base. These are
- recognized by their need for a PLT entry. */
- if (h != NULL
- && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
- /* Make sure that there really is an instruction after
- the branch that we can decode. */
- && (rel->r_offset - input_section->vma + 8
- <= input_section->_cooked_size))
- {
- bfd_byte *pnext;
+ case R_PPC64_NONE:
+ case R_PPC64_TLS:
+ case R_PPC64_GNU_VTINHERIT:
+ case R_PPC64_GNU_VTENTRY:
+ continue;
+
+ /* GOT16 relocations. Like an ADDR16 using the symbol's
+ address in the GOT as relocation value instead of the
+ symbol's value itself. Also, create a GOT entry for the
+ symbol and put the symbol value there. */
+ case R_PPC64_GOT_TLSGD16:
+ case R_PPC64_GOT_TLSGD16_LO:
+ case R_PPC64_GOT_TLSGD16_HI:
+ case R_PPC64_GOT_TLSGD16_HA:
+ tls_type = TLS_TLS | TLS_GD;
+ goto dogot;
+
+ case R_PPC64_GOT_TLSLD16:
+ case R_PPC64_GOT_TLSLD16_LO:
+ case R_PPC64_GOT_TLSLD16_HI:
+ case R_PPC64_GOT_TLSLD16_HA:
+ tls_type = TLS_TLS | TLS_LD;
+ goto dogot;
+
+ case R_PPC64_GOT_TPREL16_DS:
+ case R_PPC64_GOT_TPREL16_LO_DS:
+ case R_PPC64_GOT_TPREL16_HI:
+ case R_PPC64_GOT_TPREL16_HA:
+ tls_type = TLS_TLS | TLS_TPREL;
+ goto dogot;
+
+ case R_PPC64_GOT_DTPREL16_DS:
+ case R_PPC64_GOT_DTPREL16_LO_DS:
+ case R_PPC64_GOT_DTPREL16_HI:
+ case R_PPC64_GOT_DTPREL16_HA:
+ tls_type = TLS_TLS | TLS_DTPREL;
+ goto dogot;
- pnext = contents + (rel->r_offset - input_section->vma) + 4;
- insn = bfd_get_32 (input_bfd, pnext);
+ case R_PPC64_GOT16:
+ case R_PPC64_GOT16_LO:
+ case R_PPC64_GOT16_HI:
+ case R_PPC64_GOT16_HA:
+ case R_PPC64_GOT16_DS:
+ case R_PPC64_GOT16_LO_DS:
+ dogot:
+ {
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ asection *got;
+ bfd_vma *offp;
+ bfd_vma off;
+ unsigned long indx = 0;
- if (insn == 0x60000000 /* nop (ori r0,r0,0) */
- || insn == 0x4def7b82 /* cror 15,15,15 */
- || insn == 0x4ffffb82) /* cror 31,31,31 */
- {
- bfd_put_32 (input_bfd,
- (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
- pnext);
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_relocate_section: " \
- "patched nop after call to %s\n", sym_name);
-#endif
- }
- }
- /* fall through */
+ if (tls_type == (TLS_TLS | TLS_LD)
+ && (h == NULL
+ || !h->elf.def_dynamic))
+ offp = &ppc64_tlsld_got (input_bfd)->offset;
+ else
+ {
+ struct got_entry *ent;
+
+ if (h != NULL)
+ {
+ bfd_boolean dyn = htab->elf.dynamic_sections_created;
+ if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
+ &h->elf)
+ || (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
+ /* This is actually a static link, or it is a
+ -Bsymbolic link and the symbol is defined
+ locally, or the symbol was forced to be local
+ because of a version file. */
+ ;
+ else
+ {
+ indx = h->elf.dynindx;
+ unresolved_reloc = FALSE;
+ }
+ ent = h->elf.got.glist;
+ }
+ else
+ {
+ if (local_got_ents == NULL)
+ abort ();
+ ent = local_got_ents[r_symndx];
+ }
+
+ for (; ent != NULL; ent = ent->next)
+ if (ent->addend == orig_addend
+ && ent->owner == input_bfd
+ && ent->tls_type == tls_type)
+ break;
+ if (ent == NULL)
+ abort ();
+ offp = &ent->got.offset;
+ }
+
+ got = ppc64_elf_tdata (input_bfd)->got;
+ if (got == NULL)
+ abort ();
+
+ /* The offset must always be a multiple of 8. We use the
+ least significant bit to record whether we have already
+ processed this entry. */
+ off = *offp;
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ /* Generate relocs for the dynamic linker, except in
+ the case of TLSLD where we'll use one entry per
+ module. */
+ asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
+
+ *offp = off | 1;
+ if ((info->shared || indx != 0)
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
+ || h->elf.root.type != bfd_link_hash_undefweak))
+ {
+ outrel.r_offset = (got->output_section->vma
+ + got->output_offset
+ + off);
+ outrel.r_addend = addend;
+ if (tls_type & (TLS_LD | TLS_GD))
+ {
+ outrel.r_addend = 0;
+ outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
+ if (tls_type == (TLS_TLS | TLS_GD))
+ {
+ loc = relgot->contents;
+ loc += (relgot->reloc_count++
+ * sizeof (Elf64_External_Rela));
+ bfd_elf64_swap_reloca_out (output_bfd,
+ &outrel, loc);
+ outrel.r_offset += 8;
+ outrel.r_addend = addend;
+ outrel.r_info
+ = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
+ }
+ }
+ else if (tls_type == (TLS_TLS | TLS_DTPREL))
+ outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
+ else if (tls_type == (TLS_TLS | TLS_TPREL))
+ outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
+ else if (indx == 0)
+ {
+ outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
+
+ /* Write the .got section contents for the sake
+ of prelink. */
+ loc = got->contents + off;
+ bfd_put_64 (output_bfd, outrel.r_addend + relocation,
+ loc);
+ }
+ else
+ outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
+
+ if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
+ {
+ outrel.r_addend += relocation;
+ if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
+ outrel.r_addend -= htab->elf.tls_sec->vma;
+ }
+ loc = relgot->contents;
+ loc += (relgot->reloc_count++
+ * sizeof (Elf64_External_Rela));
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+ }
+
+ /* Init the .got section contents here if we're not
+ emitting a reloc. */
+ else
+ {
+ relocation += addend;
+ if (tls_type == (TLS_TLS | TLS_LD))
+ relocation = 1;
+ else if (tls_type != 0)
+ {
+ relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ if (tls_type == (TLS_TLS | TLS_TPREL))
+ relocation += DTP_OFFSET - TP_OFFSET;
+
+ if (tls_type == (TLS_TLS | TLS_GD))
+ {
+ bfd_put_64 (output_bfd, relocation,
+ got->contents + off + 8);
+ relocation = 1;
+ }
+ }
+
+ bfd_put_64 (output_bfd, relocation,
+ got->contents + off);
+ }
+ }
+
+ if (off >= (bfd_vma) -2)
+ abort ();
+
+ relocation = got->output_offset + off;
+
+ /* TOC base (r2) is TOC start plus 0x8000. */
+ addend = -TOC_BASE_OFF;
+ }
+ break;
+
+ case R_PPC64_PLT16_HA:
+ case R_PPC64_PLT16_HI:
+ case R_PPC64_PLT16_LO:
+ case R_PPC64_PLT32:
+ case R_PPC64_PLT64:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table. */
- case (int) R_PPC64_REL64:
- case (int) R_PPC64_REL32:
- case (int) R_PPC64_REL14:
- /* If these relocations are not to a named symbol, they can be
- handled right here, no need to bother the dynamic linker. */
- if (h == NULL && r_type != R_PPC64_ADDR24)
+ /* Resolve a PLT reloc against a local symbol directly,
+ without using the procedure linkage table. */
+ if (h == NULL)
break;
- /* fall through */
-
- /* Relocations that always need to be propagated if this is a shared
- object. */
- case (int) R_PPC64_NONE:
- case (int) R_PPC64_ADDR64:
- case (int) R_PPC64_ADDR32:
- case (int) R_PPC64_ADDR16:
- case (int) R_PPC64_ADDR16_LO:
- case (int) R_PPC64_ADDR16_DS:
- case (int) R_PPC64_ADDR16_LO_DS:
- case (int) R_PPC64_ADDR16_HI:
- case (int) R_PPC64_ADDR16_HA:
- case (int) R_PPC64_ADDR16_HIGHER:
- case (int) R_PPC64_ADDR16_HIGHERA:
- case (int) R_PPC64_ADDR16_HIGHEST:
- case (int) R_PPC64_ADDR16_HIGHESTA:
- case (int) R_PPC64_ADDR14:
- case (int) R_PPC64_UADDR64:
- case (int) R_PPC64_UADDR32:
- case (int) R_PPC64_UADDR16:
- case (int) R_PPC64_TOC:
- if (info->shared)
+
+ /* It's possible that we didn't make a PLT entry for this
+ symbol. This happens when statically linking PIC code,
+ or when using -Bsymbolic. Go find a match if there is a
+ PLT entry. */
+ if (htab->plt != NULL)
{
- Elf_Internal_Rela outrel;
- boolean skip;
+ struct plt_entry *ent;
+ for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
+ if (ent->addend == orig_addend
+ && ent->plt.offset != (bfd_vma) -1)
+ {
+ relocation = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ + ent->plt.offset);
+ unresolved_reloc = FALSE;
+ }
+ }
+ break;
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_relocate_section need to create relocation for %s\n",
- (h && h->root.root.string
- ? h->root.root.string
- : "<unknown>"));
-#endif
+ case R_PPC64_TOC:
+ /* Relocation value is TOC base. */
+ relocation = TOCstart;
+ if (r_symndx == 0)
+ relocation += htab->stub_group[input_section->id].toc_off;
+ else if (unresolved_reloc)
+ ;
+ else if (sec != NULL && sec->id <= htab->top_id)
+ relocation += htab->stub_group[sec->id].toc_off;
+ else
+ unresolved_reloc = TRUE;
+ goto dodyn;
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
+ /* TOC16 relocs. We want the offset relative to the TOC base,
+ which is the address of the start of the TOC plus 0x8000.
+ The TOC consists of sections .got, .toc, .tocbss, and .plt,
+ in this order. */
+ case R_PPC64_TOC16:
+ case R_PPC64_TOC16_LO:
+ case R_PPC64_TOC16_HI:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ case R_PPC64_TOC16_HA:
+ addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
+ break;
- if (sreloc == NULL)
- {
- const char *name;
+ /* Relocate against the beginning of the section. */
+ case R_PPC64_SECTOFF:
+ case R_PPC64_SECTOFF_LO:
+ case R_PPC64_SECTOFF_HI:
+ case R_PPC64_SECTOFF_DS:
+ case R_PPC64_SECTOFF_LO_DS:
+ case R_PPC64_SECTOFF_HA:
+ if (sec != NULL)
+ addend -= sec->output_section->vma;
+ break;
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- elf_elfheader (input_bfd)->e_shstrndx,
- elf_section_data (input_section)->rel_hdr.sh_name));
- if (name == NULL)
- return false;
+ case R_PPC64_REL14:
+ case R_PPC64_REL14_BRNTAKEN:
+ case R_PPC64_REL14_BRTAKEN:
+ case R_PPC64_REL24:
+ break;
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (input_bfd,
- input_section),
- name + 5) == 0);
+ case R_PPC64_TPREL16:
+ case R_PPC64_TPREL16_LO:
+ case R_PPC64_TPREL16_HI:
+ case R_PPC64_TPREL16_HA:
+ case R_PPC64_TPREL16_DS:
+ case R_PPC64_TPREL16_LO_DS:
+ case R_PPC64_TPREL16_HIGHER:
+ case R_PPC64_TPREL16_HIGHERA:
+ case R_PPC64_TPREL16_HIGHEST:
+ case R_PPC64_TPREL16_HIGHESTA:
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ if (info->shared)
+ /* The TPREL16 relocs shouldn't really be used in shared
+ libs as they will result in DT_TEXTREL being set, but
+ support them anyway. */
+ goto dodyn;
+ break;
- sreloc = bfd_get_section_by_name (dynobj, name);
- BFD_ASSERT (sreloc != NULL);
- }
+ case R_PPC64_DTPREL16:
+ case R_PPC64_DTPREL16_LO:
+ case R_PPC64_DTPREL16_HI:
+ case R_PPC64_DTPREL16_HA:
+ case R_PPC64_DTPREL16_DS:
+ case R_PPC64_DTPREL16_LO_DS:
+ case R_PPC64_DTPREL16_HIGHER:
+ case R_PPC64_DTPREL16_HIGHERA:
+ case R_PPC64_DTPREL16_HIGHEST:
+ case R_PPC64_DTPREL16_HIGHESTA:
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ break;
- skip = false;
+ case R_PPC64_DTPMOD64:
+ relocation = 1;
+ addend = 0;
+ goto dodyn;
- if (elf_section_data (input_section)->stab_info == NULL)
- outrel.r_offset = rel->r_offset;
- else
- {
- bfd_vma off;
-
- off = (_bfd_stab_section_offset
- (output_bfd, &elf_hash_table (info)->stab_info,
- input_section,
- &elf_section_data (input_section)->stab_info,
- rel->r_offset));
- if (off == (bfd_vma) -1)
- skip = true;
- outrel.r_offset = off;
- }
+ case R_PPC64_TPREL64:
+ addend -= htab->elf.tls_sec->vma + TP_OFFSET;
+ goto dodyn;
+
+ case R_PPC64_DTPREL64:
+ addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
+ /* Fall thru */
+
+ /* Relocations that may need to be propagated if this is a
+ dynamic object. */
+ case R_PPC64_REL30:
+ case R_PPC64_REL32:
+ case R_PPC64_REL64:
+ case R_PPC64_ADDR14:
+ case R_PPC64_ADDR14_BRNTAKEN:
+ case R_PPC64_ADDR14_BRTAKEN:
+ case R_PPC64_ADDR16:
+ case R_PPC64_ADDR16_DS:
+ case R_PPC64_ADDR16_HA:
+ case R_PPC64_ADDR16_HI:
+ case R_PPC64_ADDR16_HIGHER:
+ case R_PPC64_ADDR16_HIGHERA:
+ case R_PPC64_ADDR16_HIGHEST:
+ case R_PPC64_ADDR16_HIGHESTA:
+ case R_PPC64_ADDR16_LO:
+ case R_PPC64_ADDR16_LO_DS:
+ case R_PPC64_ADDR24:
+ case R_PPC64_ADDR32:
+ case R_PPC64_ADDR64:
+ case R_PPC64_UADDR16:
+ case R_PPC64_UADDR32:
+ case R_PPC64_UADDR64:
+ dodyn:
+ if ((input_section->flags & SEC_ALLOC) == 0)
+ break;
+
+ if (NO_OPD_RELOCS && is_opd)
+ break;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
+ if ((info->shared
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
+ || h->elf.root.type != bfd_link_hash_undefweak)
+ && (MUST_BE_DYN_RELOC (r_type)
+ || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
+ && h != NULL
+ && h->elf.dynindx != -1
+ && !h->elf.non_got_ref
+ && h->elf.def_dynamic
+ && !h->elf.def_regular))
+ {
+ Elf_Internal_Rela outrel;
+ bfd_boolean skip, relocate;
+ asection *sreloc;
+ bfd_byte *loc;
+ bfd_vma out_off;
+
+ /* When generating a dynamic object, these relocations
+ are copied into the output file to be resolved at run
+ time. */
+
+ skip = FALSE;
+ relocate = FALSE;
+
+ out_off = _bfd_elf_section_offset (output_bfd, info,
+ input_section, rel->r_offset);
+ if (out_off == (bfd_vma) -1)
+ skip = TRUE;
+ else if (out_off == (bfd_vma) -2)
+ skip = TRUE, relocate = TRUE;
+ out_off += (input_section->output_section->vma
+ + input_section->output_offset);
+ outrel.r_offset = out_off;
+ outrel.r_addend = rel->r_addend;
+
+ /* Optimize unaligned reloc use. */
+ if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
+ || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
+ r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
+ else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
+ || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
+ r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
+ else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
+ || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
+ r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
if (skip)
memset (&outrel, 0, sizeof outrel);
- /* h->dynindx may be -1 if this symbol was marked to
- become local. */
- else if (h != NULL
- && ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
+ else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
+ && !is_opd
+ && r_type != R_PPC64_TOC)
+ outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
else
{
- if (r_type == R_PPC64_ADDR64)
+ /* This symbol is local, or marked to become local,
+ or this is an opd section reloc which must point
+ at a local function. */
+ outrel.r_addend += relocation;
+ if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
{
+ if (is_opd && h != NULL)
+ {
+ /* Lie about opd entries. This case occurs
+ when building shared libraries and we
+ reference a function in another shared
+ lib. The same thing happens for a weak
+ definition in an application that's
+ overridden by a strong definition in a
+ shared lib. (I believe this is a generic
+ bug in binutils handling of weak syms.)
+ In these cases we won't use the opd
+ entry in this lib. */
+ unresolved_reloc = FALSE;
+ }
outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
+
+ /* We need to relocate .opd contents for ld.so.
+ Prelink also wants simple and consistent rules
+ for relocs. This make all RELATIVE relocs have
+ *r_offset equal to r_addend. */
+ relocate = TRUE;
}
else
{
- long indx;
+ long indx = 0;
- if (h == NULL)
- sec = local_sections[r_symndx];
- else
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || (h->root.type
- == bfd_link_hash_defweak));
- sec = h->root.u.def.section;
- }
-
- if (r_type == R_PPC64_TOC
- || (sec != NULL && bfd_is_abs_section (sec)))
- {
- indx = 0;
- }
+ if (bfd_is_abs_section (sec))
+ ;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
else
{
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
- BFD_ASSERT (indx > 0);
-#ifdef DEBUG
- if (indx <= 0)
+
+ if (indx == 0)
{
- printf ("indx=%ld section=%s flags=%08x name=%s\n",
- indx, osec->name, osec->flags,
- h->root.root.string);
+ if ((osec->flags & SEC_READONLY) == 0
+ && htab->elf.data_index_section != NULL)
+ osec = htab->elf.data_index_section;
+ else
+ osec = htab->elf.text_index_section;
+ indx = elf_section_data (osec)->dynindx;
}
-#endif
+ BFD_ASSERT (indx != 0);
+
+ /* We are turning this relocation into one
+ against a section symbol, so subtract out
+ the output section's address but not the
+ offset of the input section in the output
+ section. */
+ outrel.r_addend -= osec->vma;
}
outrel.r_info = ELF64_R_INFO (indx, r_type);
- outrel.r_addend = relocation + rel->r_addend;
}
}
- bfd_elf64_swap_reloca_out (output_bfd, &outrel,
- (((Elf64_External_Rela *)
- sreloc->contents)
- + sreloc->reloc_count));
- ++sreloc->reloc_count;
-
- /* This reloc will be computed at runtime, so there's no
- need to do anything now, unless this is a RELATIVE
- reloc in an unallocated section. */
- if (skip
- || (input_section->flags & SEC_ALLOC) != 0
- || ELF64_R_TYPE (outrel.r_info) != R_PPC64_RELATIVE)
- continue;
- }
-
- /* Arithmetic adjust relocations that aren't going into a
- shared object. */
- if ((r_type == R_PPC64_ADDR16_HA
- || r_type == R_PPC64_ADDR16_HIGHERA
- || r_type == R_PPC64_ADDR16_HIGHESTA)
- /* It's just possible that this symbol is a weak symbol
- that's not actually defined anywhere. In that case,
- 'sec' would be NULL, and we should leave the symbol
- alone (it will be set to zero elsewhere in the link). */
- && sec != NULL)
- {
- addend += ((relocation + addend) & 0x8000) << 1;
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL)
+ abort ();
+
+ if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
+ >= sreloc->size)
+ abort ();
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+
+ /* If this reloc is against an external symbol, it will
+ be computed at runtime, so there's no need to do
+ anything now. However, for the sake of prelink ensure
+ that the section contents are a known value. */
+ if (! relocate)
+ {
+ unresolved_reloc = FALSE;
+ /* The value chosen here is quite arbitrary as ld.so
+ ignores section contents except for the special
+ case of .opd where the contents might be accessed
+ before relocation. Choose zero, as that won't
+ cause reloc overflow. */
+ relocation = 0;
+ addend = 0;
+ /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
+ to improve backward compatibility with older
+ versions of ld. */
+ if (r_type == R_PPC64_ADDR64)
+ addend = outrel.r_addend;
+ /* Adjust pc_relative relocs to have zero in *r_offset. */
+ else if (ppc64_elf_howto_table[r_type]->pc_relative)
+ addend = (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+ }
}
break;
- /* Branch taken prediction relocations. */
- case (int) R_PPC64_ADDR14_BRTAKEN:
- case (int) R_PPC64_REL14_BRTAKEN:
- insn = bfd_get_32 (output_bfd, contents + offset);
- if ((relocation - offset) & 0x8000)
- insn &= ~BRANCH_PREDICT_BIT;
- else
- insn |= BRANCH_PREDICT_BIT;
- bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
- break;
-
- /* Branch not taken predicition relocations. */
- case (int) R_PPC64_ADDR14_BRNTAKEN:
- case (int) R_PPC64_REL14_BRNTAKEN:
- insn = bfd_get_32 (output_bfd, contents + offset);
- if ((relocation - offset) & 0x8000)
- insn |= BRANCH_PREDICT_BIT;
- else
- insn &= ~BRANCH_PREDICT_BIT;
- bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
- break;
-
-
- /* GOT16 relocations. Like an ADDR16 using the symbol's
- address in the GOT as relocation value instead of the
- symbols value itself. Also, create a GOT entry for the
- symbol and put the symbol value there. */
- /* FIXME: If the symbol is not in the .got section
- (typically in the .toc section) we fail (h->got.offset is
- 0). */
- /* NOTE: Sets `relocation'. */
- case (int) R_PPC64_GOT16:
- case (int) R_PPC64_GOT16_LO:
- case (int) R_PPC64_GOT16_HI:
- case (int) R_PPC64_GOT16_HA:
- case (int) R_PPC64_GOT16_DS:
- case (int) R_PPC64_GOT16_LO_DS:
- {
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- bfd_vma off;
- BFD_ASSERT (sgot != NULL);
-
- if (h != NULL)
- {
- off = h->got.offset;
- BFD_ASSERT (off != (bfd_vma) -1);
-
- if (! elf_hash_table (info)->dynamic_sections_created
- || (info->shared
- && (info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR)))
- {
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally. We must initialize this entry in the
- global offset table. Since the offset must
- always be a multiple of 4, we use the least
- significant bit to record whether we have
- initialized it already.
-
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation,
- sgot->contents + off);
- h->got.offset |= 1;
- }
- }
- }
- else
- {
- BFD_ASSERT (local_got_offsets != NULL
- && local_got_offsets[r_symndx] != (bfd_vma) -1);
-
- off = local_got_offsets[r_symndx];
-
- /* The offset must always be a multiple of 4. We use
- the least significant bit to record whether we have
- already processed this entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation, sgot->contents + off);
-
- if (info->shared)
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
-
- /* We need to generate a R_PPC64_RELATIVE reloc
- for the dynamic linker. */
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (srelgot != NULL);
-
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + off);
- outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
- outrel.r_addend = relocation;
- bfd_elf64_swap_reloca_out (output_bfd, &outrel,
- (((Elf64_External_Rela *)
- srelgot->contents)
- + srelgot->reloc_count));
- ++srelgot->reloc_count;
- }
-
- local_got_offsets[r_symndx] |= 1;
- }
- }
+ case R_PPC64_COPY:
+ case R_PPC64_GLOB_DAT:
+ case R_PPC64_JMP_SLOT:
+ case R_PPC64_RELATIVE:
+ /* We shouldn't ever see these dynamic relocs in relocatable
+ files. */
+ /* Fall through. */
- relocation = sgot->output_offset + off;
- /* TOC base (r2) is TOC start plus 0x8000. */
- addend -= TOC_BASE_OFF;
- break;
- }
+ case R_PPC64_PLTGOT16:
+ case R_PPC64_PLTGOT16_DS:
+ case R_PPC64_PLTGOT16_HA:
+ case R_PPC64_PLTGOT16_HI:
+ case R_PPC64_PLTGOT16_LO:
+ case R_PPC64_PLTGOT16_LO_DS:
+ case R_PPC64_PLTREL32:
+ case R_PPC64_PLTREL64:
+ /* These ones haven't been implemented yet. */
- /* TOC16 relocs. We want the offset relative to the TOC base,
- which is the address of the start of the TOC plus 0x8000.
- The TOC consists of sections .got, .toc, .tocbss, and .plt,
- in this order. */
+ (*_bfd_error_handler)
+ (_("%B: relocation %s is not supported for symbol %s."),
+ input_bfd,
+ ppc64_elf_howto_table[r_type]->name, sym_name);
- case (int) R_PPC64_TOC16:
- case (int) R_PPC64_TOC16_LO:
- case (int) R_PPC64_TOC16_HI:
- case (int) R_PPC64_TOC16_DS:
- case (int) R_PPC64_TOC16_LO_DS:
- BFD_ASSERT (sec != (asection *) 0);
- /* Only .got, .toc and *UND* symbols are allowed. */
- BFD_ASSERT (bfd_is_und_section (sec)
- || strcmp (bfd_get_section_name (abfd, sec),
- ".got") == 0
- || strcmp (bfd_get_section_name (abfd, sec),
- ".toc") == 0);
+ bfd_set_error (bfd_error_invalid_operation);
+ ret = FALSE;
+ continue;
+ }
- addend -= TOCstart + TOC_BASE_OFF;
+ /* Do any further special processing. */
+ switch (r_type)
+ {
+ default:
break;
- case (int) R_PPC64_TOC16_HA:
- BFD_ASSERT (sec != (asection *) 0);
- BFD_ASSERT (bfd_is_und_section (sec)
- || strcmp (bfd_get_section_name (abfd, sec),
- ".got") == 0
- || strcmp (bfd_get_section_name (abfd, sec),
- ".toc") == 0);
-
- addend -= TOCstart + TOC_BASE_OFF;
- /* Add 1 to 16-bit word 16:31 if sign bit in 0:15 is set. */
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
+ case R_PPC64_ADDR16_HA:
+ case R_PPC64_ADDR16_HIGHERA:
+ case R_PPC64_ADDR16_HIGHESTA:
+ case R_PPC64_TOC16_HA:
+ case R_PPC64_SECTOFF_HA:
+ case R_PPC64_TPREL16_HA:
+ case R_PPC64_DTPREL16_HA:
+ case R_PPC64_TPREL16_HIGHER:
+ case R_PPC64_TPREL16_HIGHERA:
+ case R_PPC64_TPREL16_HIGHEST:
+ case R_PPC64_TPREL16_HIGHESTA:
+ case R_PPC64_DTPREL16_HIGHER:
+ case R_PPC64_DTPREL16_HIGHERA:
+ case R_PPC64_DTPREL16_HIGHEST:
+ case R_PPC64_DTPREL16_HIGHESTA:
+ /* It's just possible that this symbol is a weak symbol
+ that's not actually defined anywhere. In that case,
+ 'sec' would be NULL, and we should leave the symbol
+ alone (it will be set to zero elsewhere in the link). */
+ if (sec == NULL)
+ break;
+ /* Fall thru */
- /* Relocate against the beginning of the section. */
- case (int) R_PPC64_SECTOFF:
- case (int) R_PPC64_SECTOFF_LO:
- case (int) R_PPC64_SECTOFF_HI:
- case (int) R_PPC64_SECTOFF_DS:
- case (int) R_PPC64_SECTOFF_LO_DS:
- BFD_ASSERT (sec != (asection *) 0);
- addend -= sec->output_section->vma;
+ case R_PPC64_GOT16_HA:
+ case R_PPC64_PLTGOT16_HA:
+ case R_PPC64_PLT16_HA:
+ case R_PPC64_GOT_TLSGD16_HA:
+ case R_PPC64_GOT_TLSLD16_HA:
+ case R_PPC64_GOT_TPREL16_HA:
+ case R_PPC64_GOT_DTPREL16_HA:
+ /* Add 0x10000 if sign bit in 0:15 is set.
+ Bits 0:15 are not used. */
+ addend += 0x8000;
break;
- case (int) R_PPC64_SECTOFF_HA:
- BFD_ASSERT (sec != (asection *) 0);
- addend -= sec->output_section->vma;
- addend += ((relocation + addend) & 0x8000) << 1;
+ case R_PPC64_ADDR16_DS:
+ case R_PPC64_ADDR16_LO_DS:
+ case R_PPC64_GOT16_DS:
+ case R_PPC64_GOT16_LO_DS:
+ case R_PPC64_PLT16_LO_DS:
+ case R_PPC64_SECTOFF_DS:
+ case R_PPC64_SECTOFF_LO_DS:
+ case R_PPC64_TOC16_DS:
+ case R_PPC64_TOC16_LO_DS:
+ case R_PPC64_PLTGOT16_DS:
+ case R_PPC64_PLTGOT16_LO_DS:
+ case R_PPC64_GOT_TPREL16_DS:
+ case R_PPC64_GOT_TPREL16_LO_DS:
+ case R_PPC64_GOT_DTPREL16_DS:
+ case R_PPC64_GOT_DTPREL16_LO_DS:
+ case R_PPC64_TPREL16_DS:
+ case R_PPC64_TPREL16_LO_DS:
+ case R_PPC64_DTPREL16_DS:
+ case R_PPC64_DTPREL16_LO_DS:
+ insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
+ mask = 3;
+ /* If this reloc is against an lq insn, then the value must be
+ a multiple of 16. This is somewhat of a hack, but the
+ "correct" way to do this by defining _DQ forms of all the
+ _DS relocs bloats all reloc switches in this file. It
+ doesn't seem to make much sense to use any of these relocs
+ in data, so testing the insn should be safe. */
+ if ((insn & (0x3f << 26)) == (56u << 26))
+ mask = 15;
+ if (((relocation + addend) & mask) != 0)
+ {
+ (*_bfd_error_handler)
+ (_("%B: error: relocation %s not a multiple of %d"),
+ input_bfd,
+ ppc64_elf_howto_table[r_type]->name,
+ mask + 1);
+ bfd_set_error (bfd_error_bad_value);
+ ret = FALSE;
+ continue;
+ }
break;
-
- case (int) R_PPC64_COPY:
- case (int) R_PPC64_GLOB_DAT:
- case (int) R_PPC64_JMP_SLOT:
- case (int) R_PPC64_RELATIVE:
- case (int) R_PPC64_PLT32:
- case (int) R_PPC64_PLTREL32:
- case (int) R_PPC64_PLT16_LO:
- case (int) R_PPC64_PLT16_LO_DS:
- case (int) R_PPC64_PLT16_HI:
- case (int) R_PPC64_PLT16_HA:
- case (int) R_PPC64_PLT64:
- case (int) R_PPC64_PLTREL64:
- case (int) R_PPC64_PLTGOT16:
- case (int) R_PPC64_PLTGOT16_LO:
- case (int) R_PPC64_PLTGOT16_DS:
- case (int) R_PPC64_PLTGOT16_LO_DS:
- case (int) R_PPC64_PLTGOT16_HI:
- case (int) R_PPC64_PLTGOT16_HA:
- (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."),
- bfd_get_filename (input_bfd),
- ppc64_elf_howto_table[(int) r_type]->name,
- sym_name);
-
- bfd_set_error (bfd_error_invalid_operation);
- ret = false;
- continue;
-
- case (int) R_PPC_GNU_VTINHERIT:
- case (int) R_PPC_GNU_VTENTRY:
- /* These are no-ops in the end. */
- continue;
}
-#ifdef DEBUG
- fprintf (stderr, " type = %s (%d), name = %s, sym index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int) r_type,
- sym_name,
- r_symndx,
- (long) offset,
- (long) addend);
-#endif
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+ because such sections are not SEC_ALLOC and thus ld.so will
+ not process them. */
+ if (unresolved_reloc
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && h->elf.def_dynamic))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ ppc64_elf_howto_table[(int) r_type]->name,
+ h->elf.root.root.string);
+ ret = FALSE;
+ }
- r = _bfd_final_link_relocate (howto,
+ r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
input_bfd,
input_section,
contents,
- offset,
+ rel->r_offset,
relocation,
addend);
- if (r == bfd_reloc_ok)
- ;
- else if (r == bfd_reloc_overflow)
+ if (r != bfd_reloc_ok)
{
- const char *name;
-
- if (h != NULL)
+ if (sym_name == NULL)
+ sym_name = "(null)";
+ if (r == bfd_reloc_overflow)
{
- if (h->root.type == bfd_link_hash_undefweak
- && howto->pc_relative)
+ if (warned)
+ continue;
+ if (h != NULL
+ && h->elf.root.type == bfd_link_hash_undefweak
+ && ppc64_elf_howto_table[r_type]->pc_relative)
{
/* Assume this is a call protected by other code that
detects the symbol is undefined. If this is the case,
continue;
}
- name = h->root.root.string;
+ if (!((*info->callbacks->reloc_overflow)
+ (info, (h ? &h->elf.root : NULL), sym_name,
+ ppc64_elf_howto_table[r_type]->name,
+ orig_addend, input_bfd, input_section, rel->r_offset)))
+ return FALSE;
}
else
{
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- continue;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ ppc64_elf_howto_table[r_type]->name,
+ sym_name,
+ (int) r);
+ ret = FALSE;
}
-
- if (! (*info->callbacks->reloc_overflow) (info,
- name,
- howto->name,
- (bfd_vma) 0,
- input_bfd,
- input_section,
- offset))
- return false;
}
- else
- ret = false;
}
-#ifdef DEBUG
- fprintf (stderr, "\n");
-#endif
-
+ /* If we're emitting relocations, then shortly after this function
+ returns, reloc offsets and addends for this section will be
+ adjusted. Worse, reloc symbol indices will be for the output
+ file rather than the input. Save a copy of the relocs for
+ opd_entry_value. */
+ if (is_opd && (info->emitrelocations || info->relocatable))
+ {
+ bfd_size_type amt;
+ amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
+ rel = bfd_alloc (input_bfd, amt);
+ BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
+ ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
+ if (rel == NULL)
+ return FALSE;
+ memcpy (rel, relocs, amt);
+ }
return ret;
}
-/* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
+/* Adjust the value of any local symbols in opd sections. */
-static boolean
-ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
- bfd *output_bfd;
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
+static bfd_boolean
+ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
+ const char *name ATTRIBUTE_UNUSED,
+ Elf_Internal_Sym *elfsym,
+ asection *input_sec,
+ struct elf_link_hash_entry *h)
{
- bfd *dynobj;
-
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_finish_dynamic_symbol called for %s",
- h->root.root.string);
-#endif
-
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
-
- if (h->plt.offset != (bfd_vma) -1)
- {
- asection *splt, *srela, *sglink;
- Elf_Internal_Rela rela;
- bfd_vma reloc_index, plt_offset;
- struct elf_link_hash_entry *funcdesc_h;
-
-#ifdef DEBUG
- fprintf (stderr, ", plt_offset = 0x%lx", (unsigned long) h->plt.offset);
-#endif
-
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
-
- BFD_ASSERT (h->dynindx != -1);
-
- splt = bfd_get_section_by_name (dynobj, ".plt");
- srela = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (splt != NULL && srela != NULL);
+ long *opd_adjust, adjust;
+ bfd_vma value;
- /* We don't need to fill in the .plt. The dynamic linker will
- fill it in. */
-
- /* We may need to create a linkage function. */
- sglink = bfd_get_section_by_name (dynobj, ".glink");
- if (sglink != NULL && h->root.u.def.section == sglink)
- {
- bfd_byte *p;
- bfd_vma pltoff;
- const unsigned int *stub;
-
- /* Where to write it. */
- p = h->root.u.def.section->contents + h->root.u.def.value;
-
- /* The function descriptor is in the PLT. */
- pltoff = splt->output_section->vma
- + splt->output_section->output_offset
- + h->plt.offset
- - elf_gp (output_bfd) - TOC_BASE_OFF;
-
- if (pltoff + 0x8000 > 0xffff)
- {
- (*_bfd_error_handler)
- (_("linkage table overflow against `%s'"),
- h->root.root.string);
- }
-
- /* Write it out. */
- stub = ppc64_elf_glink_code;
- bfd_put_32 (output_bfd, *stub | (pltoff & 0xfffc), p);
- while (p += 4, ++stub < (ppc64_elf_glink_code
- + (sizeof (ppc64_elf_glink_code)
- / sizeof (*ppc64_elf_glink_code))));
- {
- bfd_put_32 (output_bfd, (bfd_vma) *stub, p);
- }
-#ifdef DEBUG
- fprintf (stderr, ", linkage function");
-#endif
- }
-
- /* Create a JMP_SLOT reloc to inform the dynamic linker to fix
- the PLT entry. */
-
- /* Save the PLT offset, since `h' may be changed below. */
- plt_offset = h->plt.offset;
-
- /* If it's a function entry point, find its corresponding
- function descriptor. ppc64_elf_adjust_dynamic_symbol have
- already set it up for us. */
-
- /* FIXME: Is it safe to assume that this symbol is a function? */
- BFD_ASSERT (h->root.root.string[0] == '.');
-
- /* FIXME: Follow bfd_link_hash_indirect? */
- funcdesc_h = elf_link_hash_lookup (elf_hash_table (info),
- h->root.root.string + 1,
- false, false, false);
- BFD_ASSERT (funcdesc_h != NULL);
- BFD_ASSERT (funcdesc_h->dynindx != -1);
-
- /* FIXME: Rename the symbol for the function entry point to
- `linkage_for_FUNC'? */
-
- rela.r_offset = (splt->output_section->vma
- + splt->output_offset
- + plt_offset);
- rela.r_info = ELF64_R_INFO (funcdesc_h->dynindx, R_PPC64_JMP_SLOT);
- rela.r_addend = 0;
-
- reloc_index = (plt_offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) srela->contents
- + reloc_index));
-#ifdef DEBUG
- fprintf (stderr, ", JMP_SLOT for %s", funcdesc_h->root.root.string);
-#endif
-
-#if 0
- /* FIXME: Really do this? */
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- }
-#endif
- }
+ if (h != NULL)
+ return TRUE;
- if (h->got.offset != (bfd_vma) -1)
- {
- asection *sgot;
- asection *srela;
- Elf_Internal_Rela rela;
+ opd_adjust = get_opd_info (input_sec);
+ if (opd_adjust == NULL)
+ return TRUE;
-#ifdef DEBUG
- fprintf (stderr, ", got.offset = %08lx", (unsigned long) h->got.offset);
-#endif
+ value = elfsym->st_value - input_sec->output_offset;
+ if (!info->relocatable)
+ value -= input_sec->output_section->vma;
- /* This symbol has an entry in the global offset table. Set it
- up. */
+ adjust = opd_adjust[value / 8];
+ if (adjust == -1)
+ elfsym->st_value = 0;
+ else
+ elfsym->st_value += adjust;
+ return TRUE;
+}
- sgot = bfd_get_section_by_name (dynobj, ".got");
- srela = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (sgot != NULL && srela != NULL);
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + (h->got.offset &~ (bfd_vma) 1));
+static bfd_boolean
+ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
+{
+ struct ppc_link_hash_table *htab;
+ struct plt_entry *ent;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
- /* If this is a -Bsymbolic link, and the symbol is defined
- locally, we just want to emit a RELATIVE reloc. The entry in
- the global offset table will already have been initialized in
- the relocate_section function. */
- if (info->shared
- && (info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
- {
- rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
- else
- {
- BFD_ASSERT ((h->got.offset & 1) == 0);
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
- rela.r_addend = 0;
- }
+ htab = ppc_hash_table (info);
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) srela->contents
- + srela->reloc_count));
- ++srela->reloc_count;
- }
+ for (ent = h->plt.plist; ent != NULL; ent = ent->next)
+ if (ent->plt.offset != (bfd_vma) -1)
+ {
+ /* This symbol has an entry in the procedure linkage
+ table. Set it up. */
+
+ if (htab->plt == NULL
+ || htab->relplt == NULL
+ || htab->glink == NULL)
+ abort ();
+
+ /* Create a JMP_SLOT reloc to inform the dynamic linker to
+ fill in the PLT entry. */
+ rela.r_offset = (htab->plt->output_section->vma
+ + htab->plt->output_offset
+ + ent->plt.offset);
+ rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
+ rela.r_addend = ent->addend;
+
+ loc = htab->relplt->contents;
+ loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
+ * sizeof (Elf64_External_Rela));
+ bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
+ }
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ if (h->needs_copy)
{
- asection *s;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
- /* This symbols needs a copy reloc. Set it up. */
-
-#ifdef DEBUG
- fprintf (stderr, ", copy");
-#endif
-
- BFD_ASSERT (h->dynindx != -1);
+ /* This symbol needs a copy reloc. Set it up. */
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
- BFD_ASSERT (s != NULL);
+ if (h->dynindx == -1
+ || (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ || htab->relbss == NULL)
+ abort ();
rela.r_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
rela.r_addend = 0;
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) s->contents
- + s->reloc_count));
- ++s->reloc_count;
+ loc = htab->relbss->contents;
+ loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
+ bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
}
-#ifdef DEBUG
- fprintf (stderr, "\n");
-#endif
-
/* Mark some specially defined symbols as absolute. */
if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
sym->st_shndx = SHN_ABS;
- return true;
+ return TRUE;
+}
+
+/* Used to decide how to sort relocs in an optimal manner for the
+ dynamic linker, before writing them out. */
+
+static enum elf_reloc_type_class
+ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
+{
+ enum elf_ppc64_reloc_type r_type;
+
+ r_type = ELF64_R_TYPE (rela->r_info);
+ switch (r_type)
+ {
+ case R_PPC64_RELATIVE:
+ return reloc_class_relative;
+ case R_PPC64_JMP_SLOT:
+ return reloc_class_plt;
+ case R_PPC64_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
}
/* Finish up the dynamic sections. */
-static boolean
-ppc64_elf_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+static bfd_boolean
+ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
+ struct ppc_link_hash_table *htab;
+ bfd *dynobj;
asection *sdyn;
- bfd *dynobj = elf_hash_table (info)->dynobj;
-
-#ifdef DEBUG
- fprintf (stderr, "ppc64_elf_finish_dynamic_sections called\n");
-#endif
+ htab = ppc_hash_table (info);
+ dynobj = htab->elf.dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
- if (elf_hash_table (info)->dynamic_sections_created)
+ if (htab->elf.dynamic_sections_created)
{
- asection *splt;
Elf64_External_Dyn *dyncon, *dynconend;
- splt = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (splt != NULL && sdyn != NULL);
+ if (sdyn == NULL || htab->got == NULL)
+ abort ();
dyncon = (Elf64_External_Dyn *) sdyn->contents;
- dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
- const char *name;
- boolean size;
+ asection *s;
bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
- case DT_PLTGOT: name = ".plt"; size = false; break;
- case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
- case DT_JMPREL: name = ".rela.plt"; size = false; break;
- default: name = NULL; size = false; break;
- }
+ default:
+ continue;
- if (name != NULL)
- {
- asection *s;
+ case DT_PPC64_GLINK:
+ s = htab->glink;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ /* We stupidly defined DT_PPC64_GLINK to be the start
+ of glink rather than the first entry point, which is
+ what ld.so needs, and now have a bigger stub to
+ support automatic multiple TOCs. */
+ dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
+ break;
- s = bfd_get_section_by_name (output_bfd, name);
+ case DT_PPC64_OPD:
+ s = bfd_get_section_by_name (output_bfd, ".opd");
if (s == NULL)
- dyn.d_un.d_val = 0;
- else
- {
- if (! size)
- dyn.d_un.d_ptr = s->vma;
- else
- {
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
- }
- }
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- }
- }
-
- if (info->shared)
- {
- asection *sdynsym;
- asection *s;
- Elf_Internal_Sym sym;
- int maxdindx = 0;
-
- /* Set up the section symbols for the output sections. */
-
- sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
- BFD_ASSERT (sdynsym != NULL);
-
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
+ continue;
+ dyn.d_un.d_ptr = s->vma;
+ break;
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx, dindx;
+ case DT_PPC64_OPDSZ:
+ s = bfd_get_section_by_name (output_bfd, ".opd");
+ if (s == NULL)
+ continue;
+ dyn.d_un.d_val = s->size;
+ break;
- sym.st_value = s->vma;
+ case DT_PLTGOT:
+ s = htab->plt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ break;
- indx = elf_section_data (s)->this_idx;
- dindx = elf_section_data (s)->dynindx;
- if (dindx != -1)
- {
- BFD_ASSERT (indx > 0);
- BFD_ASSERT (dindx > 0);
+ case DT_JMPREL:
+ s = htab->relplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ break;
- if (dindx > maxdindx)
- maxdindx = dindx;
+ case DT_PLTRELSZ:
+ dyn.d_un.d_val = htab->relplt->size;
+ break;
- sym.st_shndx = indx;
+ case DT_RELASZ:
+ /* Don't count procedure linkage table relocs in the
+ overall reloc count. */
+ s = htab->relplt;
+ if (s == NULL)
+ continue;
+ dyn.d_un.d_val -= s->size;
+ break;
- bfd_elf64_swap_symbol_out (output_bfd, &sym,
- (PTR) (((Elf64_External_Sym *)
- sdynsym->contents)
- + dindx));
+ case DT_RELA:
+ /* We may not be using the standard ELF linker script.
+ If .rela.plt is the first .rela section, we adjust
+ DT_RELA to not include it. */
+ s = htab->relplt;
+ if (s == NULL)
+ continue;
+ if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
+ continue;
+ dyn.d_un.d_ptr += s->size;
+ break;
}
- }
- /* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- maxdindx + 1;
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ }
}
- return true;
-}
+ if (htab->got != NULL && htab->got->size != 0)
+ {
+ /* Fill in the first entry in the global offset table.
+ We use it to hold the link-time TOCbase. */
+ bfd_put_64 (output_bfd,
+ elf_gp (output_bfd) + TOC_BASE_OFF,
+ htab->got->contents);
+
+ /* Set .got entry size. */
+ elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
+ }
-#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
-#define TARGET_LITTLE_NAME "elf64-powerpcle"
-#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
-#define TARGET_BIG_NAME "elf64-powerpc"
-#define ELF_ARCH bfd_arch_powerpc
-#define ELF_MACHINE_CODE EM_PPC64
-#define ELF_MAXPAGESIZE 0x10000
-#define elf_info_to_howto ppc64_elf_info_to_howto
+ if (htab->plt != NULL && htab->plt->size != 0)
+ {
+ /* Set .plt entry size. */
+ elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
+ = PLT_ENTRY_SIZE;
+ }
-#ifdef EM_CYGNUS_POWERPC
-#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
-#endif
+ /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
+ brlt ourselves if emitrelocations. */
+ if (htab->brlt != NULL
+ && htab->brlt->reloc_count != 0
+ && !_bfd_elf_link_output_relocs (output_bfd,
+ htab->brlt,
+ &elf_section_data (htab->brlt)->rel_hdr,
+ elf_section_data (htab->brlt)->relocs,
+ NULL))
+ return FALSE;
+
+ /* We need to handle writing out multiple GOT sections ourselves,
+ since we didn't add them to DYNOBJ. We know dynobj is the first
+ bfd. */
+ while ((dynobj = dynobj->link_next) != NULL)
+ {
+ asection *s;
-#ifdef EM_PPC_OLD
-#define ELF_MACHINE_ALT2 EM_PPC_OLD
-#endif
+ if (!is_ppc64_elf_target (dynobj->xvec))
+ continue;
-#define elf_backend_want_got_sym 0
-#define elf_backend_want_plt_sym 0
-#define elf_backend_plt_alignment 3
-#define elf_backend_plt_not_loaded 1
-#define elf_backend_got_symbol_offset 0
-#define elf_backend_got_header_size 0
-#define elf_backend_can_gc_sections 1
+ s = ppc64_elf_tdata (dynobj)->got;
+ if (s != NULL
+ && s->size != 0
+ && s->output_section != bfd_abs_section_ptr
+ && !bfd_set_section_contents (output_bfd, s->output_section,
+ s->contents, s->output_offset,
+ s->size))
+ return FALSE;
+ s = ppc64_elf_tdata (dynobj)->relgot;
+ if (s != NULL
+ && s->size != 0
+ && s->output_section != bfd_abs_section_ptr
+ && !bfd_set_section_contents (output_bfd, s->output_section,
+ s->contents, s->output_offset,
+ s->size))
+ return FALSE;
+ }
-#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
-
-#define bfd_elf64_bfd_copy_private_bfd_data ppc64_elf_copy_private_bfd_data
-#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
-#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
-#define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
-#define bfd_elf64_bfd_final_link ppc64_elf_final_link
-
-#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
-#define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
-#define elf_backend_relocate_section ppc64_elf_relocate_section
-#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
-#define elf_backend_check_relocs ppc64_elf_check_relocs
-#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
-#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
-#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
-#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
-#define elf_backend_fake_sections ppc64_elf_fake_sections
+ return TRUE;
+}
#include "elf64-target.h"
projects / deliverable / binutils-gdb.git / blobdiff