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Diffstat (limited to 'bfd/elf64-alpha.c')
| -rw-r--r-- | bfd/elf64-alpha.c | 4792 |
1 files changed, 0 insertions, 4792 deletions
diff --git a/bfd/elf64-alpha.c b/bfd/elf64-alpha.c deleted file mode 100644 index bd89a7b8053..00000000000 --- a/bfd/elf64-alpha.c +++ /dev/null @@ -1,4792 +0,0 @@ -/* Alpha specific support for 64-bit ELF - Copyright 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. - Contributed by Richard Henderson <rth@tamu.edu>. - -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 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. */ - -/* We need a published ABI spec for this. Until one comes out, don't - assume this'll remain unchanged forever. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "elf-bfd.h" - -#include "elf/alpha.h" - -#define ALPHAECOFF - -#define NO_COFF_RELOCS -#define NO_COFF_SYMBOLS -#define NO_COFF_LINENOS - -/* Get the ECOFF swapping routines. Needed for the debug information. */ -#include "coff/internal.h" -#include "coff/sym.h" -#include "coff/symconst.h" -#include "coff/ecoff.h" -#include "coff/alpha.h" -#include "aout/ar.h" -#include "libcoff.h" -#include "libecoff.h" -#define ECOFF_64 -#include "ecoffswap.h" - -static int alpha_elf_dynamic_symbol_p - PARAMS((struct elf_link_hash_entry *, struct bfd_link_info *)); -static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc - PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); -static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create - PARAMS((bfd *)); - -static bfd_reloc_status_type elf64_alpha_reloc_nil - PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); -static bfd_reloc_status_type elf64_alpha_reloc_bad - PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); -static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp - PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *)); -static bfd_reloc_status_type elf64_alpha_reloc_gpdisp - PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); - -static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup - PARAMS((bfd *, bfd_reloc_code_real_type)); -static void elf64_alpha_info_to_howto - PARAMS((bfd *, arelent *, Elf64_Internal_Rela *)); - -static boolean elf64_alpha_mkobject - PARAMS((bfd *)); -static boolean elf64_alpha_object_p - PARAMS((bfd *)); -static boolean elf64_alpha_section_from_shdr - PARAMS((bfd *, Elf64_Internal_Shdr *, char *)); -static boolean elf64_alpha_fake_sections - PARAMS((bfd *, Elf64_Internal_Shdr *, asection *)); -static boolean elf64_alpha_create_got_section - PARAMS((bfd *, struct bfd_link_info *)); -static boolean elf64_alpha_create_dynamic_sections - PARAMS((bfd *, struct bfd_link_info *)); - -static boolean elf64_alpha_read_ecoff_info - PARAMS((bfd *, asection *, struct ecoff_debug_info *)); -static boolean elf64_alpha_is_local_label_name - PARAMS((bfd *, const char *)); -static boolean elf64_alpha_find_nearest_line - PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **, - const char **, unsigned int *)); - -#if defined(__STDC__) || defined(ALMOST_STDC) -struct alpha_elf_link_hash_entry; -#endif - -static boolean elf64_alpha_output_extsym - PARAMS((struct alpha_elf_link_hash_entry *, PTR)); - -static boolean elf64_alpha_can_merge_gots - PARAMS((bfd *, bfd *)); -static void elf64_alpha_merge_gots - PARAMS((bfd *, bfd *)); -static boolean elf64_alpha_calc_got_offsets_for_symbol - PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); -static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *)); -static boolean elf64_alpha_size_got_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean elf64_alpha_always_size_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean elf64_alpha_calc_dynrel_sizes - PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); -static boolean elf64_alpha_add_symbol_hook - PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, - const char **, flagword *, asection **, bfd_vma *)); -static boolean elf64_alpha_check_relocs - PARAMS((bfd *, struct bfd_link_info *, asection *sec, - const Elf_Internal_Rela *)); -static boolean elf64_alpha_adjust_dynamic_symbol - PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); -static boolean elf64_alpha_size_dynamic_sections - PARAMS((bfd *, struct bfd_link_info *)); -static boolean elf64_alpha_relocate_section - PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -static boolean elf64_alpha_finish_dynamic_symbol - PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, - Elf_Internal_Sym *)); -static boolean elf64_alpha_finish_dynamic_sections - PARAMS((bfd *, struct bfd_link_info *)); -static boolean elf64_alpha_final_link - PARAMS((bfd *, struct bfd_link_info *)); -static boolean elf64_alpha_merge_ind_symbols - PARAMS((struct alpha_elf_link_hash_entry *, PTR)); -static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs - PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int)); - -struct alpha_elf_link_hash_entry -{ - struct elf_link_hash_entry root; - - /* External symbol information. */ - EXTR esym; - - /* Cumulative flags for all the .got entries. */ - int flags; - - /* Contexts (LITUSE) in which a literal was referenced. */ -#define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 -#define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 -#define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 -#define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08 - - /* Used to implement multiple .got subsections. */ - struct alpha_elf_got_entry - { - struct alpha_elf_got_entry *next; - - /* which .got subsection? */ - bfd *gotobj; - - /* the addend in effect for this entry. */ - bfd_vma addend; - - /* the .got offset for this entry. */ - int got_offset; - - int flags; - - /* An additional flag. */ -#define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10 - - int use_count; - } *got_entries; - - /* used to count non-got, non-plt relocations for delayed sizing - of relocation sections. */ - struct alpha_elf_reloc_entry - { - struct alpha_elf_reloc_entry *next; - - /* which .reloc section? */ - asection *srel; - - /* what kind of relocation? */ - unsigned long rtype; - - /* how many did we find? */ - unsigned long count; - } *reloc_entries; -}; - -/* Alpha ELF linker hash table. */ - -struct alpha_elf_link_hash_table -{ - struct elf_link_hash_table root; - - /* The head of a list of .got subsections linked through - alpha_elf_tdata(abfd)->got_link_next. */ - bfd *got_list; -}; - -/* Look up an entry in a Alpha ELF linker hash table. */ - -#define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ - ((struct alpha_elf_link_hash_entry *) \ - elf_link_hash_lookup (&(table)->root, (string), (create), \ - (copy), (follow))) - -/* Traverse a Alpha ELF linker hash table. */ - -#define alpha_elf_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ - (info))) - -/* Get the Alpha ELF linker hash table from a link_info structure. */ - -#define alpha_elf_hash_table(p) \ - ((struct alpha_elf_link_hash_table *) ((p)->hash)) - -/* Get the object's symbols as our own entry type. */ - -#define alpha_elf_sym_hashes(abfd) \ - ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) - -/* Should we do dynamic things to this symbol? */ - -static int -alpha_elf_dynamic_symbol_p (h, info) - struct elf_link_hash_entry *h; - struct bfd_link_info *info; -{ - if (h == NULL) - return false; - - 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 (h->dynindx == -1) - return false; - - if (h->root.type == bfd_link_hash_undefweak - || h->root.type == bfd_link_hash_defweak) - return true; - - switch (ELF_ST_VISIBILITY (h->other)) - { - case STV_DEFAULT: - break; - case STV_HIDDEN: - case STV_INTERNAL: - return false; - case STV_PROTECTED: - if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) - return false; - break; - } - - if ((info->shared && !info->symbolic) - || ((h->elf_link_hash_flags - & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) - == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))) - return true; - - return false; -} - -/* Create an entry in a Alpha ELF linker hash table. */ - -static struct bfd_hash_entry * -elf64_alpha_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct alpha_elf_link_hash_entry *ret = - (struct alpha_elf_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct alpha_elf_link_hash_entry *) NULL) - ret = ((struct alpha_elf_link_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct alpha_elf_link_hash_entry))); - if (ret == (struct alpha_elf_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct alpha_elf_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct alpha_elf_link_hash_entry *) NULL) - { - /* Set local fields. */ - memset (&ret->esym, 0, sizeof (EXTR)); - /* We use -2 as a marker to indicate that the information has - not been set. -1 means there is no associated ifd. */ - ret->esym.ifd = -2; - ret->flags = 0; - ret->got_entries = NULL; - ret->reloc_entries = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create a Alpha ELF linker hash table. */ - -static struct bfd_link_hash_table * -elf64_alpha_bfd_link_hash_table_create (abfd) - bfd *abfd; -{ - struct alpha_elf_link_hash_table *ret; - - ret = ((struct alpha_elf_link_hash_table *) - bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table))); - if (ret == (struct alpha_elf_link_hash_table *) NULL) - return NULL; - - if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, - elf64_alpha_link_hash_newfunc)) - { - bfd_release (abfd, ret); - return NULL; - } - - return &ret->root.root; -} - -/* We have some private fields hanging off of the elf_tdata structure. */ - -struct alpha_elf_obj_tdata -{ - struct elf_obj_tdata root; - - /* For every input file, these are the got entries for that object's - local symbols. */ - struct alpha_elf_got_entry ** local_got_entries; - - /* For every input file, this is the object that owns the got that - this input file uses. */ - bfd *gotobj; - - /* For every got, this is a linked list through the objects using this got */ - bfd *in_got_link_next; - - /* For every got, this is a link to the next got subsegment. */ - bfd *got_link_next; - - /* For every got, this is the section. */ - asection *got; - - /* For every got, this is it's total number of *entries*. */ - int total_got_entries; - - /* For every got, this is the sum of the number of *entries* required - to hold all of the member object's local got. */ - int n_local_got_entries; -}; - -#define alpha_elf_tdata(abfd) \ - ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) - -static boolean -elf64_alpha_mkobject (abfd) - bfd *abfd; -{ - abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); - if (abfd->tdata.any == NULL) - return false; - return true; -} - -static boolean -elf64_alpha_object_p (abfd) - bfd *abfd; -{ - /* Allocate our special target data. */ - struct alpha_elf_obj_tdata *new_tdata; - new_tdata = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); - if (new_tdata == NULL) - return false; - new_tdata->root = *abfd->tdata.elf_obj_data; - abfd->tdata.any = new_tdata; - - /* Set the right machine number for an Alpha ELF file. */ - return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); -} - -/* In case we're on a 32-bit machine, construct a 64-bit "-1" value - from smaller values. Start with zero, widen, *then* decrement. */ -#define MINUS_ONE (((bfd_vma)0) - 1) - -static reloc_howto_type elf64_alpha_howto_table[] = -{ - HOWTO (R_ALPHA_NONE, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_nil, /* special_function */ - "NONE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - true), /* pcrel_offset */ - - /* A 32 bit reference to a symbol. */ - HOWTO (R_ALPHA_REFLONG, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "REFLONG", /* name */ - false, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* A 64 bit reference to a symbol. */ - HOWTO (R_ALPHA_REFQUAD, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "REFQUAD", /* name */ - false, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - false), /* pcrel_offset */ - - /* A 32 bit GP relative offset. This is just like REFLONG except - that when the value is used the value of the gp register will be - added in. */ - HOWTO (R_ALPHA_GPREL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "GPREL32", /* name */ - false, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Used for an instruction that refers to memory off the GP register. */ - HOWTO (R_ALPHA_LITERAL, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "ELF_LITERAL", /* name */ - false, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* This reloc only appears immediately following an ELF_LITERAL reloc. - It identifies a use of the literal. The symbol index is special: - 1 means the literal address is in the base register of a memory - format instruction; 2 means the literal address is in the byte - offset register of a byte-manipulation instruction; 3 means the - literal address is in the target register of a jsr instruction. - This does not actually do any relocation. */ - HOWTO (R_ALPHA_LITUSE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_nil, /* special_function */ - "LITUSE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Load the gp register. This is always used for a ldah instruction - which loads the upper 16 bits of the gp register. The symbol - index of the GPDISP instruction is an offset in bytes to the lda - instruction that loads the lower 16 bits. The value to use for - the relocation is the difference between the GP value and the - current location; the load will always be done against a register - holding the current address. - - NOTE: Unlike ECOFF, partial in-place relocation is not done. If - any offset is present in the instructions, it is an offset from - the register to the ldah instruction. This lets us avoid any - stupid hackery like inventing a gp value to do partial relocation - against. Also unlike ECOFF, we do the whole relocation off of - the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, - space consuming bit, that, since all the information was present - in the GPDISP_HI16 reloc. */ - HOWTO (R_ALPHA_GPDISP, /* type */ - 16, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_gpdisp, /* special_function */ - "GPDISP", /* name */ - false, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - true), /* pcrel_offset */ - - /* A 21 bit branch. */ - HOWTO (R_ALPHA_BRADDR, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 21, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "BRADDR", /* name */ - false, /* partial_inplace */ - 0x1fffff, /* src_mask */ - 0x1fffff, /* dst_mask */ - true), /* pcrel_offset */ - - /* A hint for a jump to a register. */ - HOWTO (R_ALPHA_HINT, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 14, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - 0, /* special_function */ - "HINT", /* name */ - false, /* partial_inplace */ - 0x3fff, /* src_mask */ - 0x3fff, /* dst_mask */ - true), /* pcrel_offset */ - - /* 16 bit PC relative offset. */ - HOWTO (R_ALPHA_SREL16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "SREL16", /* name */ - false, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - true), /* pcrel_offset */ - - /* 32 bit PC relative offset. */ - HOWTO (R_ALPHA_SREL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "SREL32", /* name */ - false, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - true), /* pcrel_offset */ - - /* A 64 bit PC relative offset. */ - HOWTO (R_ALPHA_SREL64, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "SREL64", /* name */ - false, /* partial_inplace */ - MINUS_ONE, /* src_mask */ - MINUS_ONE, /* dst_mask */ - true), /* pcrel_offset */ - - /* Push a value on the reloc evaluation stack. */ - /* Not implemented -- it's dumb. */ - HOWTO (R_ALPHA_OP_PUSH, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "OP_PUSH", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Store the value from the stack at the given address. Store it in - a bitfield of size r_size starting at bit position r_offset. */ - /* Not implemented -- it's dumb. */ - HOWTO (R_ALPHA_OP_STORE, /* type */ - 0, /* rightshift */ - 4, /* size (0 = byte, 1 = short, 2 = long) */ - 64, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "OP_STORE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - MINUS_ONE, /* dst_mask */ - false), /* pcrel_offset */ - - /* Subtract the reloc address from the value on the top of the - relocation stack. */ - /* Not implemented -- it's dumb. */ - HOWTO (R_ALPHA_OP_PSUB, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "OP_PSUB", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Shift the value on the top of the relocation stack right by the - given value. */ - /* Not implemented -- it's dumb. */ - HOWTO (R_ALPHA_OP_PRSHIFT, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "OP_PRSHIFT", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Change the value of GP used by +r_addend until the next GPVALUE or the - end of the input bfd. */ - /* Not implemented -- it's dumb. */ - HOWTO (R_ALPHA_GPVALUE, - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "GPVALUE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high 16 bits of the displacement from GP to the target. */ - HOWTO (R_ALPHA_GPRELHIGH, - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "GPRELHIGH", /* name */ - false, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The low 16 bits of the displacement from GP to the target. */ - HOWTO (R_ALPHA_GPRELLOW, - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "GPRELLOW", /* name */ - false, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* A 16-bit displacement from the GP to the target. */ - /* XXX: Not implemented. */ - HOWTO (R_ALPHA_IMMED_GP_16, - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "IMMED_GP_16", /* name */ - false, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high bits of a 32-bit displacement from the GP to the target; the - low bits are supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */ - /* XXX: Not implemented. */ - HOWTO (R_ALPHA_IMMED_GP_HI32, - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "IMMED_GP_HI32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high bits of a 32-bit displacement to the starting address of the - current section (the relocation target is ignored); the low bits are - supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */ - /* XXX: Not implemented. */ - HOWTO (R_ALPHA_IMMED_SCN_HI32, - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "IMMED_SCN_HI32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high bits of a 32-bit displacement from the previous br, bsr, jsr - or jmp insn (as tagged by a BRADDR or HINT reloc) to the target; the - low bits are supplied by subsequent R_ALPHA_IMMED_LO32 relocs. */ - /* XXX: Not implemented. */ - HOWTO (R_ALPHA_IMMED_BR_HI32, - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "IMMED_BR_HI32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* The low 16 bits of a displacement calculated in a previous HI32 reloc. */ - /* XXX: Not implemented. */ - HOWTO (R_ALPHA_IMMED_LO32, - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - elf64_alpha_reloc_bad, /* special_function */ - "IMMED_LO32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Misc ELF relocations. */ - - /* A dynamic relocation to copy the target into our .dynbss section. */ - /* Not generated, as all Alpha objects use PIC, so it is not needed. It - is present because every other ELF has one, but should not be used - because .dynbss is an ugly thing. */ - HOWTO (R_ALPHA_COPY, - 0, - 0, - 0, - false, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "COPY", - false, - 0, - 0, - true), - - /* A dynamic relocation for a .got entry. */ - HOWTO (R_ALPHA_GLOB_DAT, - 0, - 0, - 0, - false, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "GLOB_DAT", - false, - 0, - 0, - true), - - /* A dynamic relocation for a .plt entry. */ - HOWTO (R_ALPHA_JMP_SLOT, - 0, - 0, - 0, - false, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "JMP_SLOT", - false, - 0, - 0, - true), - - /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ - HOWTO (R_ALPHA_RELATIVE, - 0, - 0, - 0, - false, - 0, - complain_overflow_dont, - bfd_elf_generic_reloc, - "RELATIVE", - false, - 0, - 0, - true) -}; - -/* A relocation function which doesn't do anything. */ - -static bfd_reloc_status_type -elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *reloc; - asymbol *sym ATTRIBUTE_UNUSED; - PTR data ATTRIBUTE_UNUSED; - asection *sec; - bfd *output_bfd; - char **error_message ATTRIBUTE_UNUSED; -{ - if (output_bfd) - reloc->address += sec->output_offset; - return bfd_reloc_ok; -} - -/* A relocation function used for an unsupported reloc. */ - -static bfd_reloc_status_type -elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *reloc; - asymbol *sym ATTRIBUTE_UNUSED; - PTR data ATTRIBUTE_UNUSED; - asection *sec; - bfd *output_bfd; - char **error_message ATTRIBUTE_UNUSED; -{ - if (output_bfd) - reloc->address += sec->output_offset; - return bfd_reloc_notsupported; -} - -/* Do the work of the GPDISP relocation. */ - -static bfd_reloc_status_type -elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) - bfd *abfd; - bfd_vma gpdisp; - bfd_byte *p_ldah; - bfd_byte *p_lda; -{ - bfd_reloc_status_type ret = bfd_reloc_ok; - bfd_vma addend; - unsigned long i_ldah, i_lda; - - i_ldah = bfd_get_32 (abfd, p_ldah); - i_lda = bfd_get_32 (abfd, p_lda); - - /* Complain if the instructions are not correct. */ - if (((i_ldah >> 26) & 0x3f) != 0x09 - || ((i_lda >> 26) & 0x3f) != 0x08) - ret = bfd_reloc_dangerous; - - /* Extract the user-supplied offset, mirroring the sign extensions - that the instructions perform. */ - addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); - addend = (addend ^ 0x80008000) - 0x80008000; - - gpdisp += addend; - - if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 - || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) - ret = bfd_reloc_overflow; - - /* compensate for the sign extension again. */ - i_ldah = ((i_ldah & 0xffff0000) - | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); - i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); - - bfd_put_32 (abfd, i_ldah, p_ldah); - bfd_put_32 (abfd, i_lda, p_lda); - - return ret; -} - -/* The special function for the GPDISP reloc. */ - -static bfd_reloc_status_type -elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, - output_bfd, err_msg) - bfd *abfd; - arelent *reloc_entry; - asymbol *sym ATTRIBUTE_UNUSED; - PTR data; - asection *input_section; - bfd *output_bfd; - char **err_msg; -{ - bfd_reloc_status_type ret; - bfd_vma gp, relocation; - bfd_byte *p_ldah, *p_lda; - - /* Don't do anything if we're not doing a final link. */ - if (output_bfd) - { - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; - } - - if (reloc_entry->address > input_section->_cooked_size || - reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) - return bfd_reloc_outofrange; - - /* The gp used in the portion of the output object to which this - input object belongs is cached on the input bfd. */ - gp = _bfd_get_gp_value (abfd); - - relocation = (input_section->output_section->vma - + input_section->output_offset - + reloc_entry->address); - - p_ldah = (bfd_byte *) data + reloc_entry->address; - p_lda = p_ldah + reloc_entry->addend; - - ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); - - /* Complain if the instructions are not correct. */ - if (ret == bfd_reloc_dangerous) - *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); - - return ret; -} - -/* A mapping from BFD reloc types to Alpha ELF reloc types. */ - -struct elf_reloc_map -{ - bfd_reloc_code_real_type bfd_reloc_val; - int elf_reloc_val; -}; - -static const struct elf_reloc_map elf64_alpha_reloc_map[] = -{ - {BFD_RELOC_NONE, R_ALPHA_NONE}, - {BFD_RELOC_32, R_ALPHA_REFLONG}, - {BFD_RELOC_64, R_ALPHA_REFQUAD}, - {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, - {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, - {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, - {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, - {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, - {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, - {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, - {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, - {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, - {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, - -/* The BFD_RELOC_ALPHA_USER_* relocations are used by the assembler to process - the explicit !<reloc>!sequence relocations, and are mapped into the normal - relocations at the end of processing. */ - {BFD_RELOC_ALPHA_USER_LITERAL, R_ALPHA_LITERAL}, - {BFD_RELOC_ALPHA_USER_LITUSE_BASE, R_ALPHA_LITUSE}, - {BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF, R_ALPHA_LITUSE}, - {BFD_RELOC_ALPHA_USER_LITUSE_JSR, R_ALPHA_LITUSE}, - {BFD_RELOC_ALPHA_USER_GPDISP, R_ALPHA_GPDISP}, - {BFD_RELOC_ALPHA_USER_GPRELHIGH, R_ALPHA_GPRELHIGH}, - {BFD_RELOC_ALPHA_USER_GPRELLOW, R_ALPHA_GPRELLOW}, -}; - -/* Given a BFD reloc type, return a HOWTO structure. */ - -static reloc_howto_type * -elf64_alpha_bfd_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; -{ - const struct elf_reloc_map *i, *e; - i = e = elf64_alpha_reloc_map; - e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); - for (; i != e; ++i) - { - if (i->bfd_reloc_val == code) - return &elf64_alpha_howto_table[i->elf_reloc_val]; - } - return 0; -} - -/* Given an Alpha ELF reloc type, fill in an arelent structure. */ - -static void -elf64_alpha_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr; - Elf64_Internal_Rela *dst; -{ - unsigned r_type; - - r_type = ELF64_R_TYPE(dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); - cache_ptr->howto = &elf64_alpha_howto_table[r_type]; -} - -/* These functions do relaxation for Alpha ELF. - - Currently I'm only handling what I can do with existing compiler - and assembler support, which means no instructions are removed, - though some may be nopped. At this time GCC does not emit enough - information to do all of the relaxing that is possible. It will - take some not small amount of work for that to happen. - - There are a couple of interesting papers that I once read on this - subject, that I cannot find references to at the moment, that - related to Alpha in particular. They are by David Wall, then of - DEC WRL. */ - -#define OP_LDA 0x08 -#define OP_LDAH 0x09 -#define INSN_JSR 0x68004000 -#define INSN_JSR_MASK 0xfc00c000 -#define OP_LDQ 0x29 -#define OP_BR 0x30 -#define OP_BSR 0x34 -#define INSN_UNOP 0x2fe00000 - -struct alpha_relax_info -{ - bfd *abfd; - asection *sec; - bfd_byte *contents; - Elf_Internal_Rela *relocs, *relend; - struct bfd_link_info *link_info; - boolean changed_contents; - boolean changed_relocs; - bfd_vma gp; - bfd *gotobj; - asection *tsec; - struct alpha_elf_link_hash_entry *h; - struct alpha_elf_got_entry *gotent; - unsigned char other; -}; - -static Elf_Internal_Rela * elf64_alpha_relax_with_lituse - PARAMS((struct alpha_relax_info *info, bfd_vma symval, - Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend)); - -static boolean elf64_alpha_relax_without_lituse - PARAMS((struct alpha_relax_info *info, bfd_vma symval, - Elf_Internal_Rela *irel)); - -static bfd_vma elf64_alpha_relax_opt_call - PARAMS((struct alpha_relax_info *info, bfd_vma symval)); - -static boolean elf64_alpha_relax_section - PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, - boolean *again)); - -static Elf_Internal_Rela * -elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) - Elf_Internal_Rela *rel, *relend; - bfd_vma offset; - int type; -{ - while (rel < relend) - { - if (rel->r_offset == offset && ELF64_R_TYPE (rel->r_info) == type) - return rel; - ++rel; - } - return NULL; -} - -static Elf_Internal_Rela * -elf64_alpha_relax_with_lituse (info, symval, irel, irelend) - struct alpha_relax_info *info; - bfd_vma symval; - Elf_Internal_Rela *irel, *irelend; -{ - Elf_Internal_Rela *urel; - int flags, count, i; - bfd_signed_vma disp; - boolean fits16; - boolean fits32; - boolean lit_reused = false; - boolean all_optimized = true; - unsigned int lit_insn; - - lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); - if (lit_insn >> 26 != OP_LDQ) - { - ((*_bfd_error_handler) - ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", - bfd_get_filename (info->abfd), info->sec->name, - (unsigned long)irel->r_offset)); - return irel; - } - - /* Summarize how this particular LITERAL is used. */ - for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) - { - if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) - break; - if (urel->r_addend >= 0 && urel->r_addend <= 3) - flags |= 1 << urel->r_addend; - } - - /* A little preparation for the loop... */ - disp = symval - info->gp; - - for (urel = irel+1, i = 0; i < count; ++i, ++urel) - { - unsigned int insn; - int insn_disp; - bfd_signed_vma xdisp; - - insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); - - switch (urel->r_addend) - { - default: /* 0 = ADDRESS FORMAT */ - /* This type is really just a placeholder to note that all - uses cannot be optimized, but to still allow some. */ - all_optimized = false; - break; - - case 1: /* MEM FORMAT */ - /* We can always optimize 16-bit displacements. */ - - /* Extract the displacement from the instruction, sign-extending - it if necessary, then test whether it is within 16 or 32 bits - displacement from GP. */ - insn_disp = insn & 0x0000ffff; - if (insn_disp & 0x00008000) - insn_disp |= 0xffff0000; /* Negative: sign-extend. */ - - xdisp = disp + insn_disp; - fits16 = (xdisp >= - (bfd_signed_vma) 0x00008000 && xdisp < 0x00008000); - fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 && xdisp < 0x7fff8000); - - if (fits16) - { - /* Take the op code and dest from this insn, take the base - register from the literal insn. Leave the offset alone. */ - insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); - urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_GPRELLOW); - urel->r_addend = irel->r_addend; - info->changed_relocs = true; - - bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); - info->changed_contents = true; - } - - /* If all mem+byte, we can optimize 32-bit mem displacements. */ - else if (fits32 && !(flags & ~6)) - { - /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ - - irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_GPRELHIGH); - lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); - bfd_put_32 (info->abfd, lit_insn, - info->contents + irel->r_offset); - lit_reused = true; - info->changed_contents = true; - - urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_GPRELLOW); - urel->r_addend = irel->r_addend; - info->changed_relocs = true; - } - else - all_optimized = false; - break; - - case 2: /* BYTE OFFSET FORMAT */ - /* We can always optimize byte instructions. */ - - /* FIXME: sanity check the insn for byte op. Check that the - literal dest reg is indeed Rb in the byte insn. */ - - insn = (insn & ~0x001ff000) | ((symval & 7) << 13) | 0x1000; - - urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - urel->r_addend = 0; - info->changed_relocs = true; - - bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); - info->changed_contents = true; - break; - - case 3: /* CALL FORMAT */ - { - /* If not zero, place to jump without needing pv. */ - bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval); - bfd_vma org = (info->sec->output_section->vma - + info->sec->output_offset - + urel->r_offset + 4); - bfd_signed_vma odisp; - - odisp = (optdest ? optdest : symval) - org; - if (odisp >= -0x400000 && odisp < 0x400000) - { - Elf_Internal_Rela *xrel; - - /* Preserve branch prediction call stack when possible. */ - if ((insn & INSN_JSR_MASK) == INSN_JSR) - insn = (OP_BSR << 26) | (insn & 0x03e00000); - else - insn = (OP_BR << 26) | (insn & 0x03e00000); - - urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), - R_ALPHA_BRADDR); - urel->r_addend = irel->r_addend; - - if (optdest) - urel->r_addend += optdest - symval; - else - all_optimized = false; - - bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); - - /* Kill any HINT reloc that might exist for this insn. */ - xrel = (elf64_alpha_find_reloc_at_ofs - (info->relocs, info->relend, urel->r_offset, - R_ALPHA_HINT)); - if (xrel) - xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - - info->changed_contents = true; - info->changed_relocs = true; - } - else - all_optimized = false; - - /* ??? If target gp == current gp we can eliminate the gp reload. - This does depend on every place a gp could be reloaded will - be, which currently happens for all code produced by gcc, but - not necessarily by hand-coded assembly, or if sibling calls - are enabled in gcc. - - Perhaps conditionalize this on a flag being set in the target - object file's header, and have gcc set it? */ - } - break; - } - } - - /* If all cases were optimized, we can reduce the use count on this - got entry by one, possibly eliminating it. */ - if (all_optimized) - { - info->gotent->use_count -= 1; - alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; - if (!info->h) - alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; - - /* If the literal instruction is no longer needed (it may have been - reused. We can eliminate it. - ??? For now, I don't want to deal with compacting the section, - so just nop it out. */ - if (!lit_reused) - { - irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); - info->changed_relocs = true; - - bfd_put_32 (info->abfd, INSN_UNOP, info->contents + irel->r_offset); - info->changed_contents = true; - } - } - - return irel + count; -} - -static bfd_vma -elf64_alpha_relax_opt_call (info, symval) - struct alpha_relax_info *info; - bfd_vma symval; -{ - /* If the function has the same gp, and we can identify that the - function does not use its function pointer, we can eliminate the - address load. */ - - /* If the symbol is marked NOPV, we are being told the function never - needs its procedure value. */ - if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) - return symval; - - /* If the symbol is marked STD_GP, we are being told the function does - a normal ldgp in the first two words. */ - else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) - ; - - /* Otherwise, we may be able to identify a GP load in the first two - words, which we can then skip. */ - else - { - Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; - bfd_vma ofs; - - /* Load the relocations from the section that the target symbol is in. */ - if (info->sec == info->tsec) - { - tsec_relocs = info->relocs; - tsec_relend = info->relend; - tsec_free = NULL; - } - else - { - tsec_relocs = (_bfd_elf64_link_read_relocs - (info->abfd, info->tsec, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - info->link_info->keep_memory)); - if (tsec_relocs == NULL) - return 0; - tsec_relend = tsec_relocs + info->tsec->reloc_count; - tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); - } - - /* Recover the symbol's offset within the section. */ - ofs = (symval - info->tsec->output_section->vma - - info->tsec->output_offset); - - /* Look for a GPDISP reloc. */ - gpdisp = (elf64_alpha_find_reloc_at_ofs - (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); - - if (!gpdisp || gpdisp->r_addend != 4) - { - if (tsec_free) - free (tsec_free); - return 0; - } - if (tsec_free) - free (tsec_free); - } - - /* We've now determined that we can skip an initial gp load. Verify - that the call and the target use the same gp. */ - if (info->link_info->hash->creator != info->tsec->owner->xvec - || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) - return 0; - - return symval + 8; -} - -static boolean -elf64_alpha_relax_without_lituse (info, symval, irel) - struct alpha_relax_info *info; - bfd_vma symval; - Elf_Internal_Rela *irel; -{ - unsigned int insn; - bfd_signed_vma disp; - - /* Get the instruction. */ - insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); - - if (insn >> 26 != OP_LDQ) - { - ((*_bfd_error_handler) - ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", - bfd_get_filename (info->abfd), info->sec->name, - (unsigned long) irel->r_offset)); - return true; - } - - /* So we aren't told much. Do what we can with the address load and - fake the rest. All of the optimizations here require that the - offset from the GP fit in 16 bits. */ - - disp = symval - info->gp; - if (disp < -0x8000 || disp >= 0x8000) - return true; - - /* On the LITERAL instruction itself, consider exchanging - `ldq R,X(gp)' for `lda R,Y(gp)'. */ - - insn = (OP_LDA << 26) | (insn & 0x03ff0000); - bfd_put_32 (info->abfd, insn, info->contents + irel->r_offset); - info->changed_contents = true; - - irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPRELLOW); - info->changed_relocs = true; - - /* Reduce the use count on this got entry by one, possibly - eliminating it. */ - info->gotent->use_count -= 1; - alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; - if (!info->h) - alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; - - /* ??? Search forward through this basic block looking for insns - that use the target register. Stop after an insn modifying the - register is seen, or after a branch or call. - - Any such memory load insn may be substituted by a load directly - off the GP. This allows the memory load insn to be issued before - the calculated GP register would otherwise be ready. - - Any such jsr insn can be replaced by a bsr if it is in range. - - This would mean that we'd have to _add_ relocations, the pain of - which gives one pause. */ - - return true; -} - -static boolean -elf64_alpha_relax_section (abfd, sec, link_info, again) - bfd *abfd; - asection *sec; - struct bfd_link_info *link_info; - boolean *again; -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *internal_relocs; - Elf_Internal_Rela *free_relocs = NULL; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *free_contents = NULL; - Elf64_External_Sym *extsyms = NULL; - Elf64_External_Sym *free_extsyms = NULL; - struct alpha_elf_got_entry **local_got_entries; - struct alpha_relax_info info; - - /* We are not currently changing any sizes, so only one pass. */ - *again = false; - - if (link_info->relocateable - || (sec->flags & SEC_RELOC) == 0 - || sec->reloc_count == 0) - return true; - - /* If this is the first time we have been called for this section, - initialize the cooked size. */ - if (sec->_cooked_size == 0) - sec->_cooked_size = sec->_raw_size; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; - - /* Load the relocations for this section. */ - internal_relocs = (_bfd_elf64_link_read_relocs - (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - if (! link_info->keep_memory) - free_relocs = internal_relocs; - - memset(&info, 0, sizeof (info)); - info.abfd = abfd; - info.sec = sec; - info.link_info = link_info; - info.relocs = internal_relocs; - info.relend = irelend = internal_relocs + sec->reloc_count; - - /* Find the GP for this object. */ - info.gotobj = alpha_elf_tdata (abfd)->gotobj; - if (info.gotobj) - { - asection *sgot = alpha_elf_tdata (info.gotobj)->got; - info.gp = _bfd_get_gp_value (info.gotobj); - if (info.gp == 0) - { - info.gp = (sgot->output_section->vma - + sgot->output_offset - + 0x8000); - _bfd_set_gp_value (info.gotobj, info.gp); - } - } - - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - Elf_Internal_Sym isym; - struct alpha_elf_got_entry *gotent; - - if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL) - continue; - - /* Get the section contents. */ - if (info.contents == NULL) - { - if (elf_section_data (sec)->this_hdr.contents != NULL) - info.contents = elf_section_data (sec)->this_hdr.contents; - else - { - info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size); - if (info.contents == NULL) - goto error_return; - free_contents = info.contents; - - if (! bfd_get_section_contents (abfd, sec, info.contents, - (file_ptr) 0, sec->_raw_size)) - goto error_return; - } - } - - /* Read this BFD's symbols if we haven't done so already. */ - if (extsyms == NULL) - { - if (symtab_hdr->contents != NULL) - extsyms = (Elf64_External_Sym *) symtab_hdr->contents; - else - { - extsyms = ((Elf64_External_Sym *) - bfd_malloc (symtab_hdr->sh_size)); - if (extsyms == NULL) - goto error_return; - free_extsyms = extsyms; - if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) - != symtab_hdr->sh_size)) - goto error_return; - } - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - /* A local symbol. */ - bfd_elf64_swap_symbol_in (abfd, - extsyms + ELF64_R_SYM (irel->r_info), - &isym); - if (isym.st_shndx == SHN_UNDEF) - info.tsec = bfd_und_section_ptr; - else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) - info.tsec = bfd_section_from_elf_index (abfd, isym.st_shndx); - else if (isym.st_shndx == SHN_ABS) - info.tsec = bfd_abs_section_ptr; - else if (isym.st_shndx == SHN_COMMON) - info.tsec = bfd_com_section_ptr; - else - continue; /* who knows. */ - - info.h = NULL; - info.other = isym.st_other; - gotent = local_got_entries[ELF64_R_SYM(irel->r_info)]; - symval = isym.st_value; - } - else - { - unsigned long indx; - struct alpha_elf_link_hash_entry *h; - - indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = alpha_elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - /* We can't do anthing with undefined or dynamic symbols. */ - if (h->root.root.type == bfd_link_hash_undefined - || h->root.root.type == bfd_link_hash_undefweak - || alpha_elf_dynamic_symbol_p (&h->root, link_info)) - continue; - - info.h = h; - info.gotent = gotent; - info.tsec = h->root.root.u.def.section; - info.other = h->root.other; - gotent = h->got_entries; - symval = h->root.root.u.def.value; - } - - /* Search for the got entry to be used by this relocation. */ - while (gotent->gotobj != info.gotobj || gotent->addend != irel->r_addend) - gotent = gotent->next; - info.gotent = gotent; - - symval += info.tsec->output_section->vma + info.tsec->output_offset; - symval += irel->r_addend; - - BFD_ASSERT(info.gotent != NULL); - - /* If there exist LITUSE relocations immediately following, this - opens up all sorts of interesting optimizations, because we - now know every location that this address load is used. */ - - if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) - { - irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend); - if (irel == NULL) - goto error_return; - } - else - { - if (!elf64_alpha_relax_without_lituse (&info, symval, irel)) - goto error_return; - } - } - - if (!elf64_alpha_size_got_sections (abfd, link_info)) - return false; - - if (info.changed_relocs) - { - elf_section_data (sec)->relocs = internal_relocs; - } - else if (free_relocs != NULL) - { - free (free_relocs); - } - - if (info.changed_contents) - { - elf_section_data (sec)->this_hdr.contents = info.contents; - } - else if (free_contents != NULL) - { - if (! link_info->keep_memory) - free (free_contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (sec)->this_hdr.contents = info.contents; - } - } - - if (free_extsyms != NULL) - { - if (! link_info->keep_memory) - free (free_extsyms); - else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = extsyms; - } - } - - *again = info.changed_contents || info.changed_relocs; - - return true; - - error_return: - if (free_relocs != NULL) - free (free_relocs); - if (free_contents != NULL) - free (free_contents); - if (free_extsyms != NULL) - free (free_extsyms); - return false; -} - -/* PLT/GOT Stuff */ -#define PLT_HEADER_SIZE 32 -#define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */ -#define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */ -#define PLT_HEADER_WORD3 0x47ff041f /* nop */ -#define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */ - -#define PLT_ENTRY_SIZE 12 -#define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ -#define PLT_ENTRY_WORD2 0 -#define PLT_ENTRY_WORD3 0 - -#define MAX_GOT_ENTRIES (64*1024 / 8) - -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" - -/* Handle an Alpha specific section when reading an object file. This - is called when elfcode.h finds a section with an unknown type. - FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure - how to. */ - -static boolean -elf64_alpha_section_from_shdr (abfd, hdr, name) - bfd *abfd; - Elf64_Internal_Shdr *hdr; - char *name; -{ - asection *newsect; - - /* There ought to be a place to keep ELF backend specific flags, but - at the moment there isn't one. We just keep track of the - sections by their name, instead. Fortunately, the ABI gives - suggested names for all the MIPS specific sections, so we will - probably get away with this. */ - switch (hdr->sh_type) - { - case SHT_ALPHA_DEBUG: - if (strcmp (name, ".mdebug") != 0) - return false; - break; -#ifdef ERIC_neverdef - case SHT_ALPHA_REGINFO: - if (strcmp (name, ".reginfo") != 0 - || hdr->sh_size != sizeof (Elf64_External_RegInfo)) - return false; - break; -#endif - default: - return false; - } - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) - return false; - newsect = hdr->bfd_section; - - if (hdr->sh_type == SHT_ALPHA_DEBUG) - { - if (! bfd_set_section_flags (abfd, newsect, - (bfd_get_section_flags (abfd, newsect) - | SEC_DEBUGGING))) - return false; - } - -#ifdef ERIC_neverdef - /* For a .reginfo section, set the gp value in the tdata information - from the contents of this section. We need the gp value while - processing relocs, so we just get it now. */ - if (hdr->sh_type == SHT_ALPHA_REGINFO) - { - Elf64_External_RegInfo ext; - Elf64_RegInfo s; - - if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext, - (file_ptr) 0, sizeof ext)) - return false; - bfd_alpha_elf64_swap_reginfo_in (abfd, &ext, &s); - elf_gp (abfd) = s.ri_gp_value; - } -#endif - - return true; -} - -/* Set the correct type for an Alpha ELF section. We do this by the - section name, which is a hack, but ought to work. */ - -static boolean -elf64_alpha_fake_sections (abfd, hdr, sec) - bfd *abfd; - Elf64_Internal_Shdr *hdr; - asection *sec; -{ - register const char *name; - - name = bfd_get_section_name (abfd, sec); - - if (strcmp (name, ".mdebug") == 0) - { - hdr->sh_type = SHT_ALPHA_DEBUG; - /* In a shared object on Irix 5.3, the .mdebug section has an - entsize of 0. FIXME: Does this matter? */ - if ((abfd->flags & DYNAMIC) != 0 ) - hdr->sh_entsize = 0; - else - hdr->sh_entsize = 1; - } -#ifdef ERIC_neverdef - else if (strcmp (name, ".reginfo") == 0) - { - hdr->sh_type = SHT_ALPHA_REGINFO; - /* In a shared object on Irix 5.3, the .reginfo section has an - entsize of 0x18. FIXME: Does this matter? */ - if ((abfd->flags & DYNAMIC) != 0) - hdr->sh_entsize = sizeof (Elf64_External_RegInfo); - else - hdr->sh_entsize = 1; - - /* Force the section size to the correct value, even if the - linker thinks it is larger. The link routine below will only - write out this much data for .reginfo. */ - hdr->sh_size = sec->_raw_size = sizeof (Elf64_External_RegInfo); - } - else if (strcmp (name, ".hash") == 0 - || strcmp (name, ".dynamic") == 0 - || strcmp (name, ".dynstr") == 0) - { - hdr->sh_entsize = 0; - hdr->sh_info = SIZEOF_ALPHA_DYNSYM_SECNAMES; - } -#endif - else if (strcmp (name, ".sdata") == 0 - || strcmp (name, ".sbss") == 0 - || strcmp (name, ".lit4") == 0 - || strcmp (name, ".lit8") == 0) - hdr->sh_flags |= SHF_ALPHA_GPREL; - - return true; -} - -/* Hook called by the linker routine which adds symbols from an object - file. We use it to put .comm items in .sbss, and not .bss. */ - -static boolean -elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) - bfd *abfd; - struct bfd_link_info *info; - const Elf_Internal_Sym *sym; - const char **namep ATTRIBUTE_UNUSED; - flagword *flagsp ATTRIBUTE_UNUSED; - asection **secp; - bfd_vma *valp; -{ - if (sym->st_shndx == SHN_COMMON - && !info->relocateable - && sym->st_size <= bfd_get_gp_size (abfd)) - { - /* Common symbols less than or equal to -G nn bytes are - automatically put into .sbss. */ - - asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); - - if (scomm == NULL) - { - scomm = bfd_make_section (abfd, ".scommon"); - if (scomm == NULL - || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC - | SEC_IS_COMMON - | SEC_LINKER_CREATED))) - return false; - } - - *secp = scomm; - *valp = sym->st_size; - } - - return true; -} - -/* Create the .got section. */ - -static boolean -elf64_alpha_create_got_section(abfd, info) - bfd *abfd; - struct bfd_link_info *info ATTRIBUTE_UNUSED; -{ - asection *s; - - if (bfd_get_section_by_name (abfd, ".got")) - return true; - - s = bfd_make_section (abfd, ".got"); - if (s == NULL - || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED)) - || !bfd_set_section_alignment (abfd, s, 3)) - return false; - - alpha_elf_tdata (abfd)->got = s; - - return true; -} - -/* Create all the dynamic sections. */ - -static boolean -elf64_alpha_create_dynamic_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - asection *s; - struct elf_link_hash_entry *h; - - /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ - - s = bfd_make_section (abfd, ".plt"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_CODE)) - || ! bfd_set_section_alignment (abfd, s, 3)) - return false; - - /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the - .plt section. */ - h = NULL; - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, - (bfd_vma) 0, (const char *) NULL, false, - get_elf_backend_data (abfd)->collect, - (struct bfd_link_hash_entry **) &h))) - return false; - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - h->type = STT_OBJECT; - - if (info->shared - && ! _bfd_elf_link_record_dynamic_symbol (info, h)) - return false; - - s = bfd_make_section (abfd, ".rela.plt"); - if (s == NULL - || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || ! bfd_set_section_alignment (abfd, s, 3)) - return false; - - /* We may or may not have created a .got section for this object, but - we definitely havn't done the rest of the work. */ - - if (!elf64_alpha_create_got_section (abfd, info)) - return false; - - s = bfd_make_section(abfd, ".rela.got"); - if (s == NULL - || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || !bfd_set_section_alignment (abfd, s, 3)) - return false; - - /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the - dynobj's .got section. We don't do this in the linker script - because we don't want to define the symbol if we are not creating - a global offset table. */ - h = NULL; - if (!(_bfd_generic_link_add_one_symbol - (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, - alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, - false, get_elf_backend_data (abfd)->collect, - (struct bfd_link_hash_entry **) &h))) - return false; - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - h->type = STT_OBJECT; - - if (info->shared - && ! _bfd_elf_link_record_dynamic_symbol (info, h)) - return false; - - elf_hash_table (info)->hgot = h; - - return true; -} - -/* Read ECOFF debugging information from a .mdebug section into a - ecoff_debug_info structure. */ - -static boolean -elf64_alpha_read_ecoff_info (abfd, section, debug) - bfd *abfd; - asection *section; - struct ecoff_debug_info *debug; -{ - HDRR *symhdr; - const struct ecoff_debug_swap *swap; - char *ext_hdr = NULL; - - swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - memset (debug, 0, sizeof (*debug)); - - ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); - if (ext_hdr == NULL && swap->external_hdr_size != 0) - goto error_return; - - if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, - swap->external_hdr_size) - == false) - goto error_return; - - symhdr = &debug->symbolic_header; - (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); - - /* The symbolic header contains absolute file offsets and sizes to - read. */ -#define READ(ptr, offset, count, size, type) \ - if (symhdr->count == 0) \ - debug->ptr = NULL; \ - else \ - { \ - debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ - if (debug->ptr == NULL) \ - goto error_return; \ - if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ - || (bfd_read (debug->ptr, size, symhdr->count, \ - abfd) != size * symhdr->count)) \ - goto error_return; \ - } - - READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); - READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); - READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); - READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); - READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); - READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), - union aux_ext *); - READ (ss, cbSsOffset, issMax, sizeof (char), char *); - READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); - READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); - READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); - READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); -#undef READ - - debug->fdr = NULL; - debug->adjust = NULL; - - return true; - - error_return: - if (ext_hdr != NULL) - free (ext_hdr); - if (debug->line != NULL) - free (debug->line); - if (debug->external_dnr != NULL) - free (debug->external_dnr); - if (debug->external_pdr != NULL) - free (debug->external_pdr); - if (debug->external_sym != NULL) - free (debug->external_sym); - if (debug->external_opt != NULL) - free (debug->external_opt); - if (debug->external_aux != NULL) - free (debug->external_aux); - if (debug->ss != NULL) - free (debug->ss); - if (debug->ssext != NULL) - free (debug->ssext); - if (debug->external_fdr != NULL) - free (debug->external_fdr); - if (debug->external_rfd != NULL) - free (debug->external_rfd); - if (debug->external_ext != NULL) - free (debug->external_ext); - return false; -} - -/* Alpha ELF local labels start with '$'. */ - -static boolean -elf64_alpha_is_local_label_name (abfd, name) - bfd *abfd ATTRIBUTE_UNUSED; - const char *name; -{ - return name[0] == '$'; -} - -/* Alpha ELF follows MIPS ELF in using a special find_nearest_line - routine in order to handle the ECOFF debugging information. We - still call this mips_elf_find_line because of the slot - find_line_info in elf_obj_tdata is declared that way. */ - -struct mips_elf_find_line -{ - struct ecoff_debug_info d; - struct ecoff_find_line i; -}; - -static boolean -elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, - functionname_ptr, line_ptr) - bfd *abfd; - asection *section; - asymbol **symbols; - bfd_vma offset; - const char **filename_ptr; - const char **functionname_ptr; - unsigned int *line_ptr; -{ - asection *msec; - - if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr, 0, - &elf_tdata (abfd)->dwarf2_find_line_info)) - return true; - - msec = bfd_get_section_by_name (abfd, ".mdebug"); - if (msec != NULL) - { - flagword origflags; - struct mips_elf_find_line *fi; - const struct ecoff_debug_swap * const swap = - get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - - /* If we are called during a link, alpha_elf_final_link may have - cleared the SEC_HAS_CONTENTS field. We force it back on here - if appropriate (which it normally will be). */ - origflags = msec->flags; - if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) - msec->flags |= SEC_HAS_CONTENTS; - - fi = elf_tdata (abfd)->find_line_info; - if (fi == NULL) - { - bfd_size_type external_fdr_size; - char *fraw_src; - char *fraw_end; - struct fdr *fdr_ptr; - - fi = ((struct mips_elf_find_line *) - bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); - if (fi == NULL) - { - msec->flags = origflags; - return false; - } - - if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) - { - msec->flags = origflags; - return false; - } - - /* Swap in the FDR information. */ - fi->d.fdr = ((struct fdr *) - bfd_alloc (abfd, - (fi->d.symbolic_header.ifdMax * - sizeof (struct fdr)))); - if (fi->d.fdr == NULL) - { - msec->flags = origflags; - return false; - } - external_fdr_size = swap->external_fdr_size; - fdr_ptr = fi->d.fdr; - fraw_src = (char *) fi->d.external_fdr; - fraw_end = (fraw_src - + fi->d.symbolic_header.ifdMax * external_fdr_size); - for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) - (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); - - elf_tdata (abfd)->find_line_info = fi; - - /* Note that we don't bother to ever free this information. - find_nearest_line is either called all the time, as in - objdump -l, so the information should be saved, or it is - rarely called, as in ld error messages, so the memory - wasted is unimportant. Still, it would probably be a - good idea for free_cached_info to throw it away. */ - } - - if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, - &fi->i, filename_ptr, functionname_ptr, - line_ptr)) - { - msec->flags = origflags; - return true; - } - - msec->flags = origflags; - } - - /* Fall back on the generic ELF find_nearest_line routine. */ - - return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr); -} - -/* Structure used to pass information to alpha_elf_output_extsym. */ - -struct extsym_info -{ - bfd *abfd; - struct bfd_link_info *info; - struct ecoff_debug_info *debug; - const struct ecoff_debug_swap *swap; - boolean failed; -}; - -static boolean -elf64_alpha_output_extsym (h, data) - struct alpha_elf_link_hash_entry *h; - PTR data; -{ - struct extsym_info *einfo = (struct extsym_info *) data; - boolean strip; - asection *sec, *output_section; - - if (h->root.indx == -2) - strip = false; - else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) - && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) - strip = true; - else if (einfo->info->strip == strip_all - || (einfo->info->strip == strip_some - && bfd_hash_lookup (einfo->info->keep_hash, - h->root.root.root.string, - false, false) == NULL)) - strip = true; - else - strip = false; - - if (strip) - return true; - - if (h->esym.ifd == -2) - { - h->esym.jmptbl = 0; - h->esym.cobol_main = 0; - h->esym.weakext = 0; - h->esym.reserved = 0; - h->esym.ifd = ifdNil; - h->esym.asym.value = 0; - h->esym.asym.st = stGlobal; - - if (h->root.root.type != bfd_link_hash_defined - && h->root.root.type != bfd_link_hash_defweak) - h->esym.asym.sc = scAbs; - else - { - const char *name; - - sec = h->root.root.u.def.section; - output_section = sec->output_section; - - /* When making a shared library and symbol h is the one from - the another shared library, OUTPUT_SECTION may be null. */ - if (output_section == NULL) - h->esym.asym.sc = scUndefined; - else - { - name = bfd_section_name (output_section->owner, output_section); - - if (strcmp (name, ".text") == 0) - h->esym.asym.sc = scText; - else if (strcmp (name, ".data") == 0) - h->esym.asym.sc = scData; - else if (strcmp (name, ".sdata") == 0) - h->esym.asym.sc = scSData; - else if (strcmp (name, ".rodata") == 0 - || strcmp (name, ".rdata") == 0) - h->esym.asym.sc = scRData; - else if (strcmp (name, ".bss") == 0) - h->esym.asym.sc = scBss; - else if (strcmp (name, ".sbss") == 0) - h->esym.asym.sc = scSBss; - else if (strcmp (name, ".init") == 0) - h->esym.asym.sc = scInit; - else if (strcmp (name, ".fini") == 0) - h->esym.asym.sc = scFini; - else - h->esym.asym.sc = scAbs; - } - } - - h->esym.asym.reserved = 0; - h->esym.asym.index = indexNil; - } - - if (h->root.root.type == bfd_link_hash_common) - h->esym.asym.value = h->root.root.u.c.size; - else if (h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - { - if (h->esym.asym.sc == scCommon) - h->esym.asym.sc = scBss; - else if (h->esym.asym.sc == scSCommon) - h->esym.asym.sc = scSBss; - - sec = h->root.root.u.def.section; - output_section = sec->output_section; - if (output_section != NULL) - h->esym.asym.value = (h->root.root.u.def.value - + sec->output_offset - + output_section->vma); - else - h->esym.asym.value = 0; - } - else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) - { - /* Set type and value for a symbol with a function stub. */ - h->esym.asym.st = stProc; - sec = bfd_get_section_by_name (einfo->abfd, ".plt"); - if (sec == NULL) - h->esym.asym.value = 0; - else - { - output_section = sec->output_section; - if (output_section != NULL) - h->esym.asym.value = (h->root.plt.offset - + sec->output_offset - + output_section->vma); - else - h->esym.asym.value = 0; - } -#if 0 /* FIXME? */ - h->esym.ifd = 0; -#endif - } - - if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, - h->root.root.root.string, - &h->esym)) - { - einfo->failed = true; - return false; - } - - return true; -} - -/* FIXME: Create a runtime procedure table from the .mdebug section. - -static boolean -mips_elf_create_procedure_table (handle, abfd, info, s, debug) - PTR handle; - bfd *abfd; - struct bfd_link_info *info; - asection *s; - struct ecoff_debug_info *debug; -*/ - -/* Handle dynamic relocations when doing an Alpha ELF link. */ - -static boolean -elf64_alpha_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; -{ - bfd *dynobj; - asection *sreloc; - const char *rel_sec_name; - Elf_Internal_Shdr *symtab_hdr; - struct alpha_elf_link_hash_entry **sym_hashes; - struct alpha_elf_got_entry **local_got_entries; - const Elf_Internal_Rela *rel, *relend; - int got_created; - - if (info->relocateable) - return true; - - dynobj = elf_hash_table(info)->dynobj; - if (dynobj == NULL) - elf_hash_table(info)->dynobj = dynobj = abfd; - - sreloc = NULL; - rel_sec_name = NULL; - symtab_hdr = &elf_tdata(abfd)->symtab_hdr; - sym_hashes = alpha_elf_sym_hashes(abfd); - local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; - got_created = 0; - - relend = relocs + sec->reloc_count; - for (rel = relocs; rel < relend; ++rel) - { - unsigned long r_symndx, r_type; - struct alpha_elf_link_hash_entry *h; - - 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.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; - } - r_type = ELF64_R_TYPE (rel->r_info); - - switch (r_type) - { - case R_ALPHA_LITERAL: - { - struct alpha_elf_got_entry *gotent; - int flags = 0; - - if (h) - { - /* Search for and possibly create a got entry. */ - for (gotent = h->got_entries; gotent ; gotent = gotent->next) - if (gotent->gotobj == abfd && - gotent->addend == rel->r_addend) - break; - - if (!gotent) - { - gotent = ((struct alpha_elf_got_entry *) - bfd_alloc (abfd, - sizeof (struct alpha_elf_got_entry))); - if (!gotent) - return false; - - gotent->gotobj = abfd; - gotent->addend = rel->r_addend; - gotent->got_offset = -1; - gotent->flags = 0; - gotent->use_count = 1; - - gotent->next = h->got_entries; - h->got_entries = gotent; - - alpha_elf_tdata (abfd)->total_got_entries++; - } - else - gotent->use_count += 1; - } - else - { - /* This is a local .got entry -- record for merge. */ - if (!local_got_entries) - { - size_t size; - size = (symtab_hdr->sh_info - * sizeof (struct alpha_elf_got_entry *)); - - local_got_entries = ((struct alpha_elf_got_entry **) - bfd_alloc (abfd, size)); - if (!local_got_entries) - return false; - - memset (local_got_entries, 0, size); - alpha_elf_tdata (abfd)->local_got_entries = - local_got_entries; - } - - for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)]; - gotent != NULL && gotent->addend != rel->r_addend; - gotent = gotent->next) - continue; - if (!gotent) - { - gotent = ((struct alpha_elf_got_entry *) - bfd_alloc (abfd, - sizeof (struct alpha_elf_got_entry))); - if (!gotent) - return false; - - gotent->gotobj = abfd; - gotent->addend = rel->r_addend; - gotent->got_offset = -1; - gotent->flags = 0; - gotent->use_count = 1; - - gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)]; - local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent; - - alpha_elf_tdata(abfd)->total_got_entries++; - alpha_elf_tdata(abfd)->n_local_got_entries++; - } - else - gotent->use_count += 1; - } - - /* Remember how this literal is used from its LITUSEs. - This will be important when it comes to decide if we can - create a .plt entry for a function symbol. */ - if (rel+1 < relend - && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE) - { - do - { - ++rel; - if (rel->r_addend >= 1 && rel->r_addend <= 3) - flags |= 1 << rel->r_addend; - } - while (rel+1 < relend && - ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE); - } - else - { - /* No LITUSEs -- presumably the address is not being - loaded for nothing. */ - flags = ALPHA_ELF_LINK_HASH_LU_ADDR; - } - - gotent->flags |= flags; - if (h) - { - /* Make a guess as to whether a .plt entry will be needed. */ - if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC) - h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - else - h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; - } - } - /* FALLTHRU */ - - case R_ALPHA_GPDISP: - case R_ALPHA_GPREL32: - case R_ALPHA_GPRELHIGH: - case R_ALPHA_GPRELLOW: - /* We don't actually use the .got here, but the sections must - be created before the linker maps input sections to output - sections. */ - if (!got_created) - { - if (!elf64_alpha_create_got_section (abfd, info)) - return false; - - /* Make sure the object's gotobj is set to itself so - that we default to every object with its own .got. - We'll merge .gots later once we've collected each - object's info. */ - alpha_elf_tdata(abfd)->gotobj = abfd; - - got_created = 1; - } - break; - - case R_ALPHA_SREL16: - case R_ALPHA_SREL32: - case R_ALPHA_SREL64: - if (h == NULL) - break; - /* FALLTHRU */ - - case R_ALPHA_REFLONG: - case R_ALPHA_REFQUAD: - if (rel_sec_name == NULL) - { - rel_sec_name = (bfd_elf_string_from_elf_section - (abfd, elf_elfheader(abfd)->e_shstrndx, - elf_section_data(sec)->rel_hdr.sh_name)); - if (rel_sec_name == NULL) - return false; - - BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (abfd, sec), - rel_sec_name+5) == 0); - } - - /* We need to create the section here now whether we eventually - use it or not so that it gets mapped to an output section by - the linker. If not used, we'll kill it in - size_dynamic_sections. */ - if (sreloc == NULL) - { - sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); - if (sreloc == NULL) - { - sreloc = bfd_make_section (dynobj, rel_sec_name); - if (sreloc == NULL - || !bfd_set_section_flags (dynobj, sreloc, - ((sec->flags & (SEC_ALLOC - | SEC_LOAD)) - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || !bfd_set_section_alignment (dynobj, sreloc, 3)) - return false; - } - } - - if (h) - { - /* Since we havn't seen all of the input symbols yet, we - don't know whether we'll actually need a dynamic relocation - entry for this reloc. So make a record of it. Once we - find out if this thing needs dynamic relocation we'll - expand the relocation sections by the appropriate amount. */ - - struct alpha_elf_reloc_entry *rent; - - for (rent = h->reloc_entries; rent; rent = rent->next) - if (rent->rtype == r_type && rent->srel == sreloc) - break; - - if (!rent) - { - rent = ((struct alpha_elf_reloc_entry *) - bfd_alloc (abfd, - sizeof (struct alpha_elf_reloc_entry))); - if (!rent) - return false; - - rent->srel = sreloc; - rent->rtype = r_type; - rent->count = 1; - - rent->next = h->reloc_entries; - h->reloc_entries = rent; - } - else - rent->count++; - } - else if (info->shared && (sec->flags & SEC_ALLOC)) - { - /* If this is a shared library, and the section is to be - loaded into memory, we need a RELATIVE reloc. */ - sreloc->_raw_size += sizeof (Elf64_External_Rela); - } - break; - } - } - - 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 boolean -elf64_alpha_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; -{ - bfd *dynobj; - asection *s; - struct alpha_elf_link_hash_entry *ah; - - dynobj = elf_hash_table(info)->dynobj; - ah = (struct alpha_elf_link_hash_entry *)h; - - /* Now that we've seen all of the input symbols, finalize our decision - about whether this symbol should get a .plt entry. */ - - if (h->root.type != bfd_link_hash_undefweak - && alpha_elf_dynamic_symbol_p (h, info) - && ((h->type == STT_FUNC - && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) - || (h->type == STT_NOTYPE - && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC)) - /* Don't prevent otherwise valid programs from linking by attempting - to create a new .got entry somewhere. A Correct Solution would be - to add a new .got section to a new object file and let it be merged - somewhere later. But for now don't bother. */ - && ah->got_entries) - { - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - - s = bfd_get_section_by_name(dynobj, ".plt"); - if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) - return false; - - /* The first bit of the .plt is reserved. */ - if (s->_raw_size == 0) - s->_raw_size = PLT_HEADER_SIZE; - - h->plt.offset = s->_raw_size; - s->_raw_size += PLT_ENTRY_SIZE; - - /* If this symbol is not defined in a regular file, and we are not - generating a shared library, then set the symbol to the location - in the .plt. This is required to make function pointers compare - equal between the normal executable and the shared library. */ - if (! info->shared - && h->root.type != bfd_link_hash_defweak) - { - h->root.u.def.section = s; - h->root.u.def.value = h->plt.offset; - } - - /* We also need a JMP_SLOT 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); - - return true; - } - else - h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; - - /* 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) - { - 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 is a reference to a symbol defined by a dynamic object which - is not a function. The Alpha, since it uses .got entries for all - symbols even in regular objects, does not need the hackery of a - .dynbss section and COPY dynamic relocations. */ - - return true; -} - -/* Symbol versioning can create new symbols, and make our old symbols - indirect to the new ones. Consolidate the got and reloc information - in these situations. */ - -static boolean -elf64_alpha_merge_ind_symbols (hi, dummy) - struct alpha_elf_link_hash_entry *hi; - PTR dummy ATTRIBUTE_UNUSED; -{ - struct alpha_elf_link_hash_entry *hs; - - if (hi->root.root.type != bfd_link_hash_indirect) - return true; - hs = hi; - do { - hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; - } while (hs->root.root.type == bfd_link_hash_indirect); - - /* Merge the flags. Whee. */ - - hs->flags |= hi->flags; - - /* Merge the .got entries. Cannibalize the old symbol's list in - doing so, since we don't need it anymore. */ - - if (hs->got_entries == NULL) - hs->got_entries = hi->got_entries; - else - { - struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; - - gsh = hs->got_entries; - for (gi = hi->got_entries; gi ; gi = gin) - { - gin = gi->next; - for (gs = gsh; gs ; gs = gs->next) - if (gi->gotobj == gs->gotobj && gi->addend == gs->addend) - goto got_found; - gi->next = hs->got_entries; - hs->got_entries = gi; - got_found:; - } - } - hi->got_entries = NULL; - - /* And similar for the reloc entries. */ - - if (hs->reloc_entries == NULL) - hs->reloc_entries = hi->reloc_entries; - else - { - struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; - - rsh = hs->reloc_entries; - for (ri = hi->reloc_entries; ri ; ri = rin) - { - rin = ri->next; - for (rs = rsh; rs ; rs = rs->next) - if (ri->rtype == rs->rtype) - { - rs->count += ri->count; - goto found_reloc; - } - ri->next = hs->reloc_entries; - hs->reloc_entries = ri; - found_reloc:; - } - } - hi->reloc_entries = NULL; - - return true; -} - -/* Is it possible to merge two object file's .got tables? */ - -static boolean -elf64_alpha_can_merge_gots (a, b) - bfd *a, *b; -{ - int total = alpha_elf_tdata (a)->total_got_entries; - bfd *bsub; - - /* Trivial quick fallout test. */ - if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES) - return true; - - /* By their nature, local .got entries cannot be merged. */ - if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES) - return false; - - /* Failing the common trivial comparison, we must effectively - perform the merge. Not actually performing the merge means that - we don't have to store undo information in case we fail. */ - for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) - { - struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; - int i, n; - - n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; - for (i = 0; i < n; ++i) - { - struct alpha_elf_got_entry *ae, *be; - struct alpha_elf_link_hash_entry *h; - - h = hashes[i]; - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - for (be = h->got_entries; be ; be = be->next) - { - if (be->use_count == 0) - continue; - if (be->gotobj != b) - continue; - - for (ae = h->got_entries; ae ; ae = ae->next) - if (ae->gotobj == a && ae->addend == be->addend) - goto global_found; - - if (++total > MAX_GOT_ENTRIES) - return false; - global_found:; - } - } - } - - return true; -} - -/* Actually merge two .got tables. */ - -static void -elf64_alpha_merge_gots (a, b) - bfd *a, *b; -{ - int total = alpha_elf_tdata (a)->total_got_entries; - bfd *bsub; - - /* Remember local expansion. */ - { - int e = alpha_elf_tdata (b)->n_local_got_entries; - total += e; - alpha_elf_tdata (a)->n_local_got_entries += e; - } - - for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) - { - struct alpha_elf_got_entry **local_got_entries; - struct alpha_elf_link_hash_entry **hashes; - Elf_Internal_Shdr *symtab_hdr; - int i, n; - - /* Let the local .got entries know they are part of a new subsegment. */ - local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; - if (local_got_entries) - { - n = elf_tdata (bsub)->symtab_hdr.sh_info; - for (i = 0; i < n; ++i) - { - struct alpha_elf_got_entry *ent; - for (ent = local_got_entries[i]; ent; ent = ent->next) - ent->gotobj = a; - } - } - - /* Merge the global .got entries. */ - hashes = alpha_elf_sym_hashes (bsub); - symtab_hdr = &elf_tdata (bsub)->symtab_hdr; - - n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; - for (i = 0; i < n; ++i) - { - struct alpha_elf_got_entry *ae, *be, **pbe, **start; - struct alpha_elf_link_hash_entry *h; - - h = hashes[i]; - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - start = &h->got_entries; - for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) - { - if (be->use_count == 0) - { - *pbe = be->next; - continue; - } - if (be->gotobj != b) - continue; - - for (ae = *start; ae ; ae = ae->next) - if (ae->gotobj == a && ae->addend == be->addend) - { - ae->flags |= be->flags; - ae->use_count += be->use_count; - *pbe = be->next; - goto global_found; - } - be->gotobj = a; - total += 1; - - global_found:; - } - } - - alpha_elf_tdata (bsub)->gotobj = a; - } - alpha_elf_tdata (a)->total_got_entries = total; - - /* Merge the two in_got chains. */ - { - bfd *next; - - bsub = a; - while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) - bsub = next; - - alpha_elf_tdata (bsub)->in_got_link_next = b; - } -} - -/* Calculate the offsets for the got entries. */ - -static boolean -elf64_alpha_calc_got_offsets_for_symbol (h, arg) - struct alpha_elf_link_hash_entry *h; - PTR arg; -{ - struct alpha_elf_got_entry *gotent; - - for (gotent = h->got_entries; gotent; gotent = gotent->next) - if (gotent->use_count > 0) - { - bfd_size_type *plge - = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; - - gotent->got_offset = *plge; - *plge += 8; - } - - return true; -} - -static void -elf64_alpha_calc_got_offsets (info) - struct bfd_link_info *info; -{ - bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; - - /* First, zero out the .got sizes, as we may be recalculating the - .got after optimizing it. */ - for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) - alpha_elf_tdata(i)->got->_raw_size = 0; - - /* Next, fill in the offsets for all the global entries. */ - alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), - elf64_alpha_calc_got_offsets_for_symbol, - NULL); - - /* Finally, fill in the offsets for the local entries. */ - for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) - { - bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; - bfd *j; - - for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) - { - struct alpha_elf_got_entry **local_got_entries, *gotent; - int k, n; - - local_got_entries = alpha_elf_tdata(j)->local_got_entries; - if (!local_got_entries) - continue; - - for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) - for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) - if (gotent->use_count > 0) - { - gotent->got_offset = got_offset; - got_offset += 8; - } - } - - alpha_elf_tdata(i)->got->_raw_size = got_offset; - alpha_elf_tdata(i)->got->_cooked_size = got_offset; - } -} - -/* Constructs the gots. */ - -static boolean -elf64_alpha_size_got_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *i, *got_list, *cur_got_obj; - int something_changed = 0; - - got_list = alpha_elf_hash_table (info)->got_list; - - /* On the first time through, pretend we have an existing got list - consisting of all of the input files. */ - if (got_list == NULL) - { - for (i = info->input_bfds; i ; i = i->link_next) - { - bfd *this_got = alpha_elf_tdata (i)->gotobj; - if (this_got == NULL) - continue; - - /* We are assuming no merging has yet ocurred. */ - BFD_ASSERT (this_got == i); - - if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES) - { - /* Yikes! A single object file has too many entries. */ - (*_bfd_error_handler) - (_("%s: .got subsegment exceeds 64K (size %d)"), - bfd_get_filename (i), - alpha_elf_tdata (this_got)->total_got_entries * 8); - return false; - } - - if (got_list == NULL) - got_list = this_got; - else - alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; - cur_got_obj = this_got; - } - - /* Strange degenerate case of no got references. */ - if (got_list == NULL) - return true; - - alpha_elf_hash_table (info)->got_list = got_list; - - /* Force got offsets to be recalculated. */ - something_changed = 1; - } - - cur_got_obj = got_list; - i = alpha_elf_tdata(cur_got_obj)->got_link_next; - while (i != NULL) - { - if (elf64_alpha_can_merge_gots (cur_got_obj, i)) - { - elf64_alpha_merge_gots (cur_got_obj, i); - i = alpha_elf_tdata(i)->got_link_next; - alpha_elf_tdata(cur_got_obj)->got_link_next = i; - something_changed = 1; - } - else - { - cur_got_obj = i; - i = alpha_elf_tdata(i)->got_link_next; - } - } - - /* Once the gots have been merged, fill in the got offsets for - everything therein. */ - if (1 || something_changed) - elf64_alpha_calc_got_offsets (info); - - return true; -} - -static boolean -elf64_alpha_always_size_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *i; - - if (info->relocateable) - return true; - - /* First, take care of the indirect symbols created by versioning. */ - alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), - elf64_alpha_merge_ind_symbols, - NULL); - - if (!elf64_alpha_size_got_sections (output_bfd, info)) - return false; - - /* Allocate space for all of the .got subsections. */ - i = alpha_elf_hash_table (info)->got_list; - for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) - { - asection *s = alpha_elf_tdata(i)->got; - if (s->_raw_size > 0) - { - s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); - if (s->contents == NULL) - return false; - } - } - - return true; -} - -/* Work out the sizes of the dynamic relocation entries. */ - -static boolean -elf64_alpha_calc_dynrel_sizes (h, info) - struct alpha_elf_link_hash_entry *h; - struct bfd_link_info *info; -{ - /* If the symbol was defined as a common symbol in a regular object - file, and there was no definition in any dynamic object, then the - linker will have allocated space for the symbol in a common - section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been - set. This is done for dynamic symbols in - elf_adjust_dynamic_symbol but this is not done for non-dynamic - symbols, somehow. */ - if (((h->root.elf_link_hash_flags - & (ELF_LINK_HASH_DEF_REGULAR - | ELF_LINK_HASH_REF_REGULAR - | ELF_LINK_HASH_DEF_DYNAMIC)) - == ELF_LINK_HASH_REF_REGULAR) - && (h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) - { - h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - } - - /* If the symbol is dynamic, we'll need all the relocations in their - natural form. If this is a shared object, and it has been forced - local, we'll need the same number of RELATIVE relocations. */ - - if (alpha_elf_dynamic_symbol_p (&h->root, info) || info->shared) - { - struct alpha_elf_reloc_entry *relent; - bfd *dynobj; - struct alpha_elf_got_entry *gotent; - bfd_size_type count; - asection *srel; - - for (relent = h->reloc_entries; relent; relent = relent->next) - if (relent->rtype == R_ALPHA_REFLONG - || relent->rtype == R_ALPHA_REFQUAD) - { - relent->srel->_raw_size += - sizeof (Elf64_External_Rela) * relent->count; - } - - dynobj = elf_hash_table(info)->dynobj; - count = 0; - - for (gotent = h->got_entries; gotent ; gotent = gotent->next) - count++; - - /* If we are using a .plt entry, subtract one, as the first - reference uses a .rela.plt entry instead. */ - if (h->root.plt.offset != MINUS_ONE) - count--; - - if (count > 0) - { - srel = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (srel != NULL); - srel->_raw_size += sizeof (Elf64_External_Rela) * count; - } - } - - return true; -} - -/* Set the sizes of the dynamic sections. */ - -static boolean -elf64_alpha_size_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *s; - boolean reltext; - boolean relplt; - - dynobj = elf_hash_table(info)->dynobj; - BFD_ASSERT(dynobj != NULL); - - 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; - } - - /* Now that we've seen all of the input files, we can decide which - symbols need dynamic relocation entries and which don't. We've - collected information in check_relocs that we can now apply to - size the dynamic relocation sections. */ - alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), - elf64_alpha_calc_dynrel_sizes, - info); - - /* When building shared libraries, each local .got entry needs a - RELATIVE reloc. */ - if (info->shared) - { - bfd *i; - asection *srel; - bfd_size_type count; - - srel = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (srel != NULL); - - for (i = alpha_elf_hash_table(info)->got_list, count = 0; - i != NULL; - i = alpha_elf_tdata(i)->got_link_next) - count += alpha_elf_tdata(i)->n_local_got_entries; - - srel->_raw_size += count * sizeof (Elf64_External_Rela); - } - } - /* else we're not dynamic and by definition we don't need such things. */ - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - reltext = false; - relplt = false; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - boolean strip; - - if (!(s->flags & SEC_LINKER_CREATED)) - continue; - - /* 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); - - /* If we don't need this section, strip it from the output file. - This is to handle .rela.bss and .rela.plt. We must create it - in create_dynamic_sections, because it 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 = false; - - if (strncmp (name, ".rela", 5) == 0) - { - strip = (s->_raw_size == 0); - - if (!strip) - { - const char *outname; - asection *target; - - /* 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; - - if (strcmp(name, ".rela.plt") == 0) - relplt = 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 if (strcmp (name, ".plt") != 0) - { - /* It's not one of our dynamic sections, so don't allocate space. */ - continue; - } - - if (strip) - _bfd_strip_section_from_output (info, s); - else - { - /* 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; - } - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in elf64_alpha_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. */ - if (!info->shared) - { - if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) - return false; - } - - if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) - return false; - - if (relplt) - { - if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) - || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) - || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) - return false; - } - - if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) - || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) - || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, - sizeof (Elf64_External_Rela))) - return false; - - if (reltext) - { - if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) - return false; - info->flags |= DF_TEXTREL; - } - } - - return true; -} - -/* Relocate an Alpha ELF section. */ - -static boolean -elf64_alpha_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; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - asection *sec, *sgot, *srel, *srelgot; - bfd *dynobj, *gotobj; - bfd_vma gp; - - srelgot = srel = NULL; - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - dynobj = elf_hash_table (info)->dynobj; - if (dynobj) - { - srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); - } - - /* Find the gp value for this input bfd. */ - sgot = NULL; - gp = 0; - gotobj = alpha_elf_tdata (input_bfd)->gotobj; - if (gotobj) - { - sgot = alpha_elf_tdata (gotobj)->got; - gp = _bfd_get_gp_value (gotobj); - if (gp == 0) - { - gp = (sgot->output_section->vma - + sgot->output_offset - + 0x8000); - _bfd_set_gp_value (gotobj, gp); - } - } - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - int r_type; - reloc_howto_type *howto; - unsigned long r_symndx; - struct alpha_elf_link_hash_entry *h; - Elf_Internal_Sym *sym; - bfd_vma relocation; - bfd_vma addend; - bfd_reloc_status_type r; - - r_type = ELF64_R_TYPE(rel->r_info); - if (r_type < 0 || r_type >= (int) R_ALPHA_max) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - howto = elf64_alpha_howto_table + r_type; - - r_symndx = ELF64_R_SYM(rel->r_info); - - if (info->relocateable) - { - /* This is a relocateable 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. */ - - /* The symbol associated with GPDISP and LITUSE is - immaterial. Only the addend is significant. */ - if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) - continue; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) - { - sec = local_sections[r_symndx]; - rel->r_addend += sec->output_offset + sym->st_value; - } - } - - continue; - } - - /* This is a final link. */ - - h = NULL; - sym = NULL; - sec = NULL; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); - } - else - { - h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; - - while (h->root.root.type == bfd_link_hash_indirect - || h->root.root.type == bfd_link_hash_warning) - h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; - - if (h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - { - sec = h->root.root.u.def.section; - -#if rth_notdef - if ((r_type == R_ALPHA_LITERAL - && elf_hash_table(info)->dynamic_sections_created - && (!info->shared - || !info->symbolic - || !(h->root.elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR))) - || (info->shared - && (!info->symbolic - || !(h->root.elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR)) - && (input_section->flags & SEC_ALLOC) - && (r_type == R_ALPHA_REFLONG - || r_type == R_ALPHA_REFQUAD - || r_type == R_ALPHA_LITERAL))) - { - /* 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; - } -#else - /* FIXME: Are not these obscure cases simply bugs? Let's - get something working and come back to this. */ - if (sec->output_section == NULL) - relocation = 0; -#endif /* rth_notdef */ - else - { - relocation = (h->root.root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } - } - else if (h->root.root.type == bfd_link_hash_undefweak) - relocation = 0; - else if (info->shared && !info->symbolic - && !info->no_undefined - && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) - relocation = 0; - else - { - if (!((*info->callbacks->undefined_symbol) - (info, h->root.root.root.string, input_bfd, - input_section, rel->r_offset, - (!info->shared || info->no_undefined - || ELF_ST_VISIBILITY (h->root.other))))) - return false; - relocation = 0; - } - } - addend = rel->r_addend; - - switch (r_type) - { - case R_ALPHA_GPDISP: - { - bfd_byte *p_ldah, *p_lda; - - BFD_ASSERT(gp != 0); - - relocation = (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - p_ldah = contents + rel->r_offset - input_section->vma; - p_lda = p_ldah + rel->r_addend; - - r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation, - p_ldah, p_lda); - } - break; - - case R_ALPHA_OP_PUSH: - case R_ALPHA_OP_STORE: - case R_ALPHA_OP_PSUB: - case R_ALPHA_OP_PRSHIFT: - /* We hate these silly beasts. */ - abort (); - - case R_ALPHA_LITERAL: - { - struct alpha_elf_got_entry *gotent; - boolean dynamic_symbol; - - BFD_ASSERT(sgot != NULL); - BFD_ASSERT(gp != 0); - - if (h != NULL) - { - gotent = h->got_entries; - dynamic_symbol = alpha_elf_dynamic_symbol_p (&h->root, info); - } - else - { - gotent = (alpha_elf_tdata(input_bfd)-> - local_got_entries[r_symndx]); - dynamic_symbol = false; - } - - BFD_ASSERT(gotent != NULL); - - while (gotent->gotobj != gotobj || gotent->addend != addend) - gotent = gotent->next; - - BFD_ASSERT(gotent->use_count >= 1); - - /* Initialize the .got entry's value. */ - if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) - { - bfd_put_64 (output_bfd, relocation+addend, - sgot->contents + gotent->got_offset); - - /* If the symbol has been forced local, output a - RELATIVE reloc, otherwise it will be handled in - finish_dynamic_symbol. */ - if (info->shared && !dynamic_symbol) - { - Elf_Internal_Rela outrel; - - BFD_ASSERT(srelgot != NULL); - - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); - outrel.r_addend = 0; - - bfd_elf64_swap_reloca_out (output_bfd, &outrel, - ((Elf64_External_Rela *) - srelgot->contents) - + srelgot->reloc_count++); - BFD_ASSERT (sizeof (Elf64_External_Rela) - * srelgot->reloc_count - <= srelgot->_cooked_size); - } - - gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; - } - - /* Figure the gprel relocation. */ - addend = 0; - relocation = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - relocation -= gp; - } - /* overflow handled by _bfd_final_link_relocate */ - goto default_reloc; - - case R_ALPHA_GPREL32: - case R_ALPHA_GPRELLOW: - BFD_ASSERT(gp != 0); - relocation -= gp; - goto default_reloc; - - case R_ALPHA_GPRELHIGH: - BFD_ASSERT(gp != 0); - relocation -= gp; - relocation += addend; - addend = 0; - relocation = (((bfd_signed_vma) relocation >> 16) - + ((relocation >> 15) & 1)); - goto default_reloc; - - case R_ALPHA_BRADDR: - case R_ALPHA_HINT: - /* The regular PC-relative stuff measures from the start of - the instruction rather than the end. */ - addend -= 4; - goto default_reloc; - - case R_ALPHA_REFLONG: - case R_ALPHA_REFQUAD: - { - Elf_Internal_Rela outrel; - boolean skip; - - /* Careful here to remember RELATIVE relocations for global - variables for symbolic shared objects. */ - - if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) - { - BFD_ASSERT(h->root.dynindx != -1); - outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type); - outrel.r_addend = addend; - addend = 0, relocation = 0; - } - else if (info->shared && (input_section->flags & SEC_ALLOC)) - { - outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); - outrel.r_addend = 0; - } - else - goto default_reloc; - - if (!srel) - { - const char *name; - - name = (bfd_elf_string_from_elf_section - (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, - elf_section_data(input_section)->rel_hdr.sh_name)); - BFD_ASSERT(name != NULL); - - srel = bfd_get_section_by_name (dynobj, name); - BFD_ASSERT(srel != NULL); - } - - skip = false; - - 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; - } - - if (! skip) - outrel.r_offset += (input_section->output_section->vma - + input_section->output_offset); - else - memset (&outrel, 0, sizeof outrel); - - bfd_elf64_swap_reloca_out (output_bfd, &outrel, - ((Elf64_External_Rela *) - srel->contents) - + srel->reloc_count++); - BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count - <= srel->_cooked_size); - } - goto default_reloc; - - default: - default_reloc: - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, relocation, - addend); - break; - } - - switch (r) - { - case bfd_reloc_ok: - break; - - case bfd_reloc_overflow: - { - const char *name; - - if (h != NULL) - name = h->root.root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL) - return false; - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); - } - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, - input_bfd, input_section, rel->r_offset))) - return false; - } - break; - - default: - case bfd_reloc_outofrange: - abort (); - } - } - - return true; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static boolean -elf64_alpha_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; -{ - bfd *dynobj = elf_hash_table(info)->dynobj; - - if (h->plt.offset != MINUS_ONE) - { - /* Fill in the .plt entry for this symbol. */ - asection *splt, *sgot, *srel; - Elf_Internal_Rela outrel; - bfd_vma got_addr, plt_addr; - bfd_vma plt_index; - struct alpha_elf_got_entry *gotent; - - BFD_ASSERT (h->dynindx != -1); - - /* The first .got entry will be updated by the .plt with the - address of the target function. */ - gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; - BFD_ASSERT (gotent && gotent->addend == 0); - - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL); - srel = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (srel != NULL); - sgot = alpha_elf_tdata (gotent->gotobj)->got; - BFD_ASSERT (sgot != NULL); - - got_addr = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - plt_addr = (splt->output_section->vma - + splt->output_offset - + h->plt.offset); - - plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; - - /* Fill in the entry in the procedure linkage table. */ - { - unsigned insn1, insn2, insn3; - - insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); - insn2 = PLT_ENTRY_WORD2; - insn3 = PLT_ENTRY_WORD3; - - bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); - bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); - bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); - } - - /* Fill in the entry in the .rela.plt section. */ - outrel.r_offset = got_addr; - outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); - outrel.r_addend = 0; - - bfd_elf64_swap_reloca_out (output_bfd, &outrel, - ((Elf64_External_Rela *)srel->contents - + plt_index)); - - if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) - { - /* Mark the symbol as undefined, rather than as defined in the - .plt section. Leave the value alone. */ - sym->st_shndx = SHN_UNDEF; - } - - /* Fill in the entries in the .got. */ - bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); - - /* Subsequent .got entries will continue to bounce through the .plt. */ - if (gotent->next) - { - srel = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (! info->shared || srel != NULL); - - gotent = gotent->next; - do - { - sgot = alpha_elf_tdata(gotent->gotobj)->got; - BFD_ASSERT(sgot != NULL); - BFD_ASSERT(gotent->addend == 0); - - bfd_put_64 (output_bfd, plt_addr, - sgot->contents + gotent->got_offset); - - if (info->shared) - { - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); - outrel.r_addend = 0; - - bfd_elf64_swap_reloca_out (output_bfd, &outrel, - ((Elf64_External_Rela *) - srel->contents) - + srel->reloc_count++); - BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count - <= srel->_cooked_size); - } - - gotent = gotent->next; - } - while (gotent != NULL); - } - } - else if (alpha_elf_dynamic_symbol_p (h, info)) - { - /* Fill in the dynamic relocations for this symbol's .got entries. */ - asection *srel; - Elf_Internal_Rela outrel; - struct alpha_elf_got_entry *gotent; - - srel = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (srel != NULL); - - outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT); - for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; - gotent != NULL; - gotent = gotent->next) - { - asection *sgot = alpha_elf_tdata (gotent->gotobj)->got; - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + gotent->got_offset); - outrel.r_addend = gotent->addend; - - bfd_elf64_swap_reloca_out (output_bfd, &outrel, - ((Elf64_External_Rela *)srel->contents - + srel->reloc_count++)); - BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count - <= srel->_cooked_size); - } - } - - /* Mark some specially defined symbols as absolute. */ - if (strcmp (h->root.root.string, "_DYNAMIC") == 0 - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 - || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) - sym->st_shndx = SHN_ABS; - - return true; -} - -/* Finish up the dynamic sections. */ - -static boolean -elf64_alpha_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *sdyn; - - dynobj = elf_hash_table (info)->dynobj; - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf64_External_Dyn *dyncon, *dynconend; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); - - dyncon = (Elf64_External_Dyn *) sdyn->contents; - dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - const char *name; - asection *s; - - bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - case DT_PLTGOT: - name = ".plt"; - goto get_vma; - case DT_PLTRELSZ: - name = ".rela.plt"; - goto get_size; - case DT_JMPREL: - name = ".rela.plt"; - goto get_vma; - - case DT_RELASZ: - /* My interpretation of the TIS v1.1 ELF document indicates - that RELASZ should not include JMPREL. This is not what - the rest of the BFD does. It is, however, what the - glibc ld.so wants. Do this fixup here until we found - out who is right. */ - s = bfd_get_section_by_name (output_bfd, ".rela.plt"); - if (s) - { - dyn.d_un.d_val -= - (s->_cooked_size ? s->_cooked_size : s->_raw_size); - } - break; - - get_vma: - s = bfd_get_section_by_name (output_bfd, name); - dyn.d_un.d_ptr = (s ? s->vma : 0); - break; - - get_size: - s = bfd_get_section_by_name (output_bfd, name); - dyn.d_un.d_val = - (s->_cooked_size ? s->_cooked_size : s->_raw_size); - break; - } - - bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); - } - - /* Initialize the PLT0 entry */ - if (splt->_raw_size > 0) - { - bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); - bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); - bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); - bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); - - /* The next two words will be filled in by ld.so */ - bfd_put_64 (output_bfd, 0, splt->contents + 16); - bfd_put_64 (output_bfd, 0, splt->contents + 24); - - elf_section_data (splt->output_section)->this_hdr.sh_entsize = - PLT_HEADER_SIZE; - } - } - - return true; -} - -/* We need to use a special link routine to handle the .reginfo and - the .mdebug sections. We need to merge all instances of these - sections together, not write them all out sequentially. */ - -static boolean -elf64_alpha_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - asection *o; - struct bfd_link_order *p; - asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; - struct ecoff_debug_info debug; - const struct ecoff_debug_swap *swap - = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; - HDRR *symhdr = &debug.symbolic_header; - PTR mdebug_handle = NULL; - -#if 0 - if (++ngots == 2) - { - (*info->callbacks->warning) - (info, _("using multiple gp values"), (char *) NULL, - output_bfd, (asection *) NULL, (bfd_vma) 0); - } -#endif - - /* Go through the sections and collect the .reginfo and .mdebug - information. */ - reginfo_sec = NULL; - mdebug_sec = NULL; - gptab_data_sec = NULL; - gptab_bss_sec = NULL; - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - { -#ifdef ERIC_neverdef - if (strcmp (o->name, ".reginfo") == 0) - { - memset (®info, 0, sizeof reginfo); - - /* We have found the .reginfo section in the output file. - Look through all the link_orders comprising it and merge - the information together. */ - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - bfd *input_bfd; - Elf64_External_RegInfo ext; - Elf64_RegInfo sub; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_fill_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - input_bfd = input_section->owner; - - /* The linker emulation code has probably clobbered the - size to be zero bytes. */ - if (input_section->_raw_size == 0) - input_section->_raw_size = sizeof (Elf64_External_RegInfo); - - if (! bfd_get_section_contents (input_bfd, input_section, - (PTR) &ext, - (file_ptr) 0, - sizeof ext)) - return false; - - bfd_alpha_elf64_swap_reginfo_in (input_bfd, &ext, &sub); - - reginfo.ri_gprmask |= sub.ri_gprmask; - reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; - reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; - reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; - reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; - - /* ri_gp_value is set by the function - alpha_elf_section_processing when the section is - finally written out. */ - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* Force the section size to the value we want. */ - o->_raw_size = sizeof (Elf64_External_RegInfo); - - /* Skip this section later on (I don't think this currently - matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - - reginfo_sec = o; - } -#endif - - if (strcmp (o->name, ".mdebug") == 0) - { - struct extsym_info einfo; - - /* We have found the .mdebug section in the output file. - Look through all the link_orders comprising it and merge - the information together. */ - symhdr->magic = swap->sym_magic; - /* FIXME: What should the version stamp be? */ - symhdr->vstamp = 0; - symhdr->ilineMax = 0; - symhdr->cbLine = 0; - symhdr->idnMax = 0; - symhdr->ipdMax = 0; - symhdr->isymMax = 0; - symhdr->ioptMax = 0; - symhdr->iauxMax = 0; - symhdr->issMax = 0; - symhdr->issExtMax = 0; - symhdr->ifdMax = 0; - symhdr->crfd = 0; - symhdr->iextMax = 0; - - /* We accumulate the debugging information itself in the - debug_info structure. */ - debug.line = NULL; - debug.external_dnr = NULL; - debug.external_pdr = NULL; - debug.external_sym = NULL; - debug.external_opt = NULL; - debug.external_aux = NULL; - debug.ss = NULL; - debug.ssext = debug.ssext_end = NULL; - debug.external_fdr = NULL; - debug.external_rfd = NULL; - debug.external_ext = debug.external_ext_end = NULL; - - mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); - if (mdebug_handle == (PTR) NULL) - return false; - - if (1) - { - asection *s; - EXTR esym; - bfd_vma last; - unsigned int i; - static const char * const name[] = - { - ".text", ".init", ".fini", ".data", - ".rodata", ".sdata", ".sbss", ".bss" - }; - static const int sc[] = { scText, scInit, scFini, scData, - scRData, scSData, scSBss, scBss }; - - esym.jmptbl = 0; - esym.cobol_main = 0; - esym.weakext = 0; - esym.reserved = 0; - esym.ifd = ifdNil; - esym.asym.iss = issNil; - esym.asym.st = stLocal; - esym.asym.reserved = 0; - esym.asym.index = indexNil; - for (i = 0; i < 8; i++) - { - esym.asym.sc = sc[i]; - s = bfd_get_section_by_name (abfd, name[i]); - if (s != NULL) - { - esym.asym.value = s->vma; - last = s->vma + s->_raw_size; - } - else - esym.asym.value = last; - - if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, - name[i], &esym)) - return false; - } - } - - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - bfd *input_bfd; - const struct ecoff_debug_swap *input_swap; - struct ecoff_debug_info input_debug; - char *eraw_src; - char *eraw_end; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_fill_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - input_bfd = input_section->owner; - - if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour - || (get_elf_backend_data (input_bfd) - ->elf_backend_ecoff_debug_swap) == NULL) - { - /* I don't know what a non ALPHA ELF bfd would be - doing with a .mdebug section, but I don't really - want to deal with it. */ - continue; - } - - input_swap = (get_elf_backend_data (input_bfd) - ->elf_backend_ecoff_debug_swap); - - BFD_ASSERT (p->size == input_section->_raw_size); - - /* The ECOFF linking code expects that we have already - read in the debugging information and set up an - ecoff_debug_info structure, so we do that now. */ - if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, - &input_debug)) - return false; - - if (! (bfd_ecoff_debug_accumulate - (mdebug_handle, abfd, &debug, swap, input_bfd, - &input_debug, input_swap, info))) - return false; - - /* Loop through the external symbols. For each one with - interesting information, try to find the symbol in - the linker global hash table and save the information - for the output external symbols. */ - eraw_src = input_debug.external_ext; - eraw_end = (eraw_src - + (input_debug.symbolic_header.iextMax - * input_swap->external_ext_size)); - for (; - eraw_src < eraw_end; - eraw_src += input_swap->external_ext_size) - { - EXTR ext; - const char *name; - struct alpha_elf_link_hash_entry *h; - - (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); - if (ext.asym.sc == scNil - || ext.asym.sc == scUndefined - || ext.asym.sc == scSUndefined) - continue; - - name = input_debug.ssext + ext.asym.iss; - h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), - name, false, false, true); - if (h == NULL || h->esym.ifd != -2) - continue; - - if (ext.ifd != -1) - { - BFD_ASSERT (ext.ifd - < input_debug.symbolic_header.ifdMax); - ext.ifd = input_debug.ifdmap[ext.ifd]; - } - - h->esym = ext; - } - - /* Free up the information we just read. */ - free (input_debug.line); - free (input_debug.external_dnr); - free (input_debug.external_pdr); - free (input_debug.external_sym); - free (input_debug.external_opt); - free (input_debug.external_aux); - free (input_debug.ss); - free (input_debug.ssext); - free (input_debug.external_fdr); - free (input_debug.external_rfd); - free (input_debug.external_ext); - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - -#ifdef ERIC_neverdef - if (info->shared) - { - /* Create .rtproc section. */ - rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); - if (rtproc_sec == NULL) - { - flagword flags = (SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY); - - rtproc_sec = bfd_make_section (abfd, ".rtproc"); - if (rtproc_sec == NULL - || ! bfd_set_section_flags (abfd, rtproc_sec, flags) - || ! bfd_set_section_alignment (abfd, rtproc_sec, 12)) - return false; - } - - if (! alpha_elf_create_procedure_table (mdebug_handle, abfd, - info, rtproc_sec, &debug)) - return false; - } -#endif - - /* Build the external symbol information. */ - einfo.abfd = abfd; - einfo.info = info; - einfo.debug = &debug; - einfo.swap = swap; - einfo.failed = false; - elf_link_hash_traverse (elf_hash_table (info), - elf64_alpha_output_extsym, - (PTR) &einfo); - if (einfo.failed) - return false; - - /* Set the size of the .mdebug section. */ - o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); - - /* Skip this section later on (I don't think this currently - matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - - mdebug_sec = o; - } - -#ifdef ERIC_neverdef - if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) - { - const char *subname; - unsigned int c; - Elf64_gptab *tab; - Elf64_External_gptab *ext_tab; - unsigned int i; - - /* The .gptab.sdata and .gptab.sbss sections hold - information describing how the small data area would - change depending upon the -G switch. These sections - not used in executables files. */ - if (! info->relocateable) - { - asection **secpp; - - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_fill_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* Skip this section later on (I don't think this - currently matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - - /* Really remove the section. */ - for (secpp = &abfd->sections; - *secpp != o; - secpp = &(*secpp)->next) - ; - *secpp = (*secpp)->next; - --abfd->section_count; - - continue; - } - - /* There is one gptab for initialized data, and one for - uninitialized data. */ - if (strcmp (o->name, ".gptab.sdata") == 0) - gptab_data_sec = o; - else if (strcmp (o->name, ".gptab.sbss") == 0) - gptab_bss_sec = o; - else - { - (*_bfd_error_handler) - (_("%s: illegal section name `%s'"), - bfd_get_filename (abfd), o->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - - /* The linker script always combines .gptab.data and - .gptab.sdata into .gptab.sdata, and likewise for - .gptab.bss and .gptab.sbss. It is possible that there is - no .sdata or .sbss section in the output file, in which - case we must change the name of the output section. */ - subname = o->name + sizeof ".gptab" - 1; - if (bfd_get_section_by_name (abfd, subname) == NULL) - { - if (o == gptab_data_sec) - o->name = ".gptab.data"; - else - o->name = ".gptab.bss"; - subname = o->name + sizeof ".gptab" - 1; - BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); - } - - /* Set up the first entry. */ - c = 1; - tab = (Elf64_gptab *) bfd_malloc (c * sizeof (Elf64_gptab)); - if (tab == NULL) - return false; - tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); - tab[0].gt_header.gt_unused = 0; - - /* Combine the input sections. */ - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - asection *input_section; - bfd *input_bfd; - bfd_size_type size; - unsigned long last; - bfd_size_type gpentry; - - if (p->type != bfd_indirect_link_order) - { - if (p->type == bfd_fill_link_order) - continue; - abort (); - } - - input_section = p->u.indirect.section; - input_bfd = input_section->owner; - - /* Combine the gptab entries for this input section one - by one. We know that the input gptab entries are - sorted by ascending -G value. */ - size = bfd_section_size (input_bfd, input_section); - last = 0; - for (gpentry = sizeof (Elf64_External_gptab); - gpentry < size; - gpentry += sizeof (Elf64_External_gptab)) - { - Elf64_External_gptab ext_gptab; - Elf64_gptab int_gptab; - unsigned long val; - unsigned long add; - boolean exact; - unsigned int look; - - if (! (bfd_get_section_contents - (input_bfd, input_section, (PTR) &ext_gptab, - gpentry, sizeof (Elf64_External_gptab)))) - { - free (tab); - return false; - } - - bfd_alpha_elf64_swap_gptab_in (input_bfd, &ext_gptab, - &int_gptab); - val = int_gptab.gt_entry.gt_g_value; - add = int_gptab.gt_entry.gt_bytes - last; - - exact = false; - for (look = 1; look < c; look++) - { - if (tab[look].gt_entry.gt_g_value >= val) - tab[look].gt_entry.gt_bytes += add; - - if (tab[look].gt_entry.gt_g_value == val) - exact = true; - } - - if (! exact) - { - Elf64_gptab *new_tab; - unsigned int max; - - /* We need a new table entry. */ - new_tab = ((Elf64_gptab *) - bfd_realloc ((PTR) tab, - (c + 1) * sizeof (Elf64_gptab))); - if (new_tab == NULL) - { - free (tab); - return false; - } - tab = new_tab; - tab[c].gt_entry.gt_g_value = val; - tab[c].gt_entry.gt_bytes = add; - - /* Merge in the size for the next smallest -G - value, since that will be implied by this new - value. */ - max = 0; - for (look = 1; look < c; look++) - { - if (tab[look].gt_entry.gt_g_value < val - && (max == 0 - || (tab[look].gt_entry.gt_g_value - > tab[max].gt_entry.gt_g_value))) - max = look; - } - if (max != 0) - tab[c].gt_entry.gt_bytes += - tab[max].gt_entry.gt_bytes; - - ++c; - } - - last = int_gptab.gt_entry.gt_bytes; - } - - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &=~ SEC_HAS_CONTENTS; - } - - /* The table must be sorted by -G value. */ - if (c > 2) - qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); - - /* Swap out the table. */ - ext_tab = ((Elf64_External_gptab *) - bfd_alloc (abfd, c * sizeof (Elf64_External_gptab))); - if (ext_tab == NULL) - { - free (tab); - return false; - } - - for (i = 0; i < c; i++) - bfd_alpha_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); - free (tab); - - o->_raw_size = c * sizeof (Elf64_External_gptab); - o->contents = (bfd_byte *) ext_tab; - - /* Skip this section later on (I don't think this currently - matters, but someday it might). */ - o->link_order_head = (struct bfd_link_order *) NULL; - } -#endif - - } - - /* Invoke the regular ELF backend linker to do all the work. */ - if (! bfd_elf64_bfd_final_link (abfd, info)) - return false; - - /* Now write out the computed sections. */ - - /* The .got subsections... */ - { - bfd *i, *dynobj = elf_hash_table(info)->dynobj; - for (i = alpha_elf_hash_table(info)->got_list; - i != NULL; - i = alpha_elf_tdata(i)->got_link_next) - { - asection *sgot; - - /* elf_bfd_final_link already did everything in dynobj. */ - if (i == dynobj) - continue; - - sgot = alpha_elf_tdata(i)->got; - if (! bfd_set_section_contents (abfd, sgot->output_section, - sgot->contents, sgot->output_offset, - sgot->_raw_size)) - return false; - } - } - -#ifdef ERIC_neverdef - if (reginfo_sec != (asection *) NULL) - { - Elf64_External_RegInfo ext; - - bfd_alpha_elf64_swap_reginfo_out (abfd, ®info, &ext); - if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, - (file_ptr) 0, sizeof ext)) - return false; - } -#endif - - if (mdebug_sec != (asection *) NULL) - { - BFD_ASSERT (abfd->output_has_begun); - if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, - swap, info, - mdebug_sec->filepos)) - return false; - - bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); - } - - if (gptab_data_sec != (asection *) NULL) - { - if (! bfd_set_section_contents (abfd, gptab_data_sec, - gptab_data_sec->contents, - (file_ptr) 0, - gptab_data_sec->_raw_size)) - return false; - } - - if (gptab_bss_sec != (asection *) NULL) - { - if (! bfd_set_section_contents (abfd, gptab_bss_sec, - gptab_bss_sec->contents, - (file_ptr) 0, - gptab_bss_sec->_raw_size)) - return false; - } - - return true; -} - -/* ECOFF swapping routines. These are used when dealing with the - .mdebug section, which is in the ECOFF debugging format. Copied - from elf32-mips.c. */ -static const struct ecoff_debug_swap -elf64_alpha_ecoff_debug_swap = -{ - /* Symbol table magic number. */ - magicSym2, - /* Alignment of debugging information. E.g., 4. */ - 8, - /* Sizes of external symbolic information. */ - sizeof (struct hdr_ext), - sizeof (struct dnr_ext), - sizeof (struct pdr_ext), - sizeof (struct sym_ext), - sizeof (struct opt_ext), - sizeof (struct fdr_ext), - sizeof (struct rfd_ext), - sizeof (struct ext_ext), - /* Functions to swap in external symbolic data. */ - ecoff_swap_hdr_in, - ecoff_swap_dnr_in, - ecoff_swap_pdr_in, - ecoff_swap_sym_in, - ecoff_swap_opt_in, - ecoff_swap_fdr_in, - ecoff_swap_rfd_in, - ecoff_swap_ext_in, - _bfd_ecoff_swap_tir_in, - _bfd_ecoff_swap_rndx_in, - /* Functions to swap out external symbolic data. */ - ecoff_swap_hdr_out, - ecoff_swap_dnr_out, - ecoff_swap_pdr_out, - ecoff_swap_sym_out, - ecoff_swap_opt_out, - ecoff_swap_fdr_out, - ecoff_swap_rfd_out, - ecoff_swap_ext_out, - _bfd_ecoff_swap_tir_out, - _bfd_ecoff_swap_rndx_out, - /* Function to read in symbolic data. */ - elf64_alpha_read_ecoff_info -}; - -/* Use a non-standard hash bucket size of 8. */ - -const struct elf_size_info alpha_elf_size_info = -{ - sizeof (Elf64_External_Ehdr), - sizeof (Elf64_External_Phdr), - sizeof (Elf64_External_Shdr), - sizeof (Elf64_External_Rel), - sizeof (Elf64_External_Rela), - sizeof (Elf64_External_Sym), - sizeof (Elf64_External_Dyn), - sizeof (Elf_External_Note), - 8, - 1, - 64, 8, - ELFCLASS64, EV_CURRENT, - bfd_elf64_write_out_phdrs, - bfd_elf64_write_shdrs_and_ehdr, - bfd_elf64_write_relocs, - bfd_elf64_swap_symbol_out, - bfd_elf64_slurp_reloc_table, - bfd_elf64_slurp_symbol_table, - bfd_elf64_swap_dyn_in, - bfd_elf64_swap_dyn_out, - NULL, - NULL, - NULL, - NULL -}; - -#define TARGET_LITTLE_SYM bfd_elf64_alpha_vec -#define TARGET_LITTLE_NAME "elf64-alpha" -#define ELF_ARCH bfd_arch_alpha -#define ELF_MACHINE_CODE EM_ALPHA -#define ELF_MAXPAGESIZE 0x10000 - -#define bfd_elf64_bfd_link_hash_table_create \ - elf64_alpha_bfd_link_hash_table_create - -#define bfd_elf64_bfd_reloc_type_lookup \ - elf64_alpha_bfd_reloc_type_lookup -#define elf_info_to_howto \ - elf64_alpha_info_to_howto - -#define bfd_elf64_mkobject \ - elf64_alpha_mkobject -#define elf_backend_object_p \ - elf64_alpha_object_p - -#define elf_backend_section_from_shdr \ - elf64_alpha_section_from_shdr -#define elf_backend_fake_sections \ - elf64_alpha_fake_sections - -#define bfd_elf64_bfd_is_local_label_name \ - elf64_alpha_is_local_label_name -#define bfd_elf64_find_nearest_line \ - elf64_alpha_find_nearest_line -#define bfd_elf64_bfd_relax_section \ - elf64_alpha_relax_section - -#define elf_backend_add_symbol_hook \ - elf64_alpha_add_symbol_hook -#define elf_backend_check_relocs \ - elf64_alpha_check_relocs -#define elf_backend_create_dynamic_sections \ - elf64_alpha_create_dynamic_sections -#define elf_backend_adjust_dynamic_symbol \ - elf64_alpha_adjust_dynamic_symbol -#define elf_backend_always_size_sections \ - elf64_alpha_always_size_sections -#define elf_backend_size_dynamic_sections \ - elf64_alpha_size_dynamic_sections -#define elf_backend_relocate_section \ - elf64_alpha_relocate_section -#define elf_backend_finish_dynamic_symbol \ - elf64_alpha_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections \ - elf64_alpha_finish_dynamic_sections -#define bfd_elf64_bfd_final_link \ - elf64_alpha_final_link - -#define elf_backend_ecoff_debug_swap \ - &elf64_alpha_ecoff_debug_swap - -#define elf_backend_size_info \ - alpha_elf_size_info - -/* A few constants that determine how the .plt section is set up. */ -#define elf_backend_want_got_plt 0 -#define elf_backend_plt_readonly 0 -#define elf_backend_want_plt_sym 1 -#define elf_backend_got_header_size 0 -#define elf_backend_plt_header_size PLT_HEADER_SIZE - -#include "elf64-target.h" |