diff options
Diffstat (limited to 'bfd/elfxx-ia64.c')
| -rw-r--r-- | bfd/elfxx-ia64.c | 4189 |
1 files changed, 4189 insertions, 0 deletions
diff --git a/bfd/elfxx-ia64.c b/bfd/elfxx-ia64.c new file mode 100644 index 0000000..1e319bc --- /dev/null +++ b/bfd/elfxx-ia64.c @@ -0,0 +1,4189 @@ +/* IA-64 support for 64-bit ELF + Copyright 1998, 1999, 2000 Free Software Foundation, Inc. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com> + +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. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "elf-bfd.h" +#include "opcode/ia64.h" +#include "elf/ia64.h" + + +/* + * THE RULES for all the stuff the linker creates -- + * + * GOT Entries created in response to LTOFF or LTOFF_FPTR + * relocations. Dynamic relocs created for dynamic + * symbols in an application; REL relocs for locals + * in a shared library. + * + * FPTR The canonical function descriptor. Created for local + * symbols in applications. Descriptors for dynamic symbols + * and local symbols in shared libraries are created by + * ld.so. Thus there are no dynamic relocs against these + * objects. The FPTR relocs for such _are_ passed through + * to the dynamic relocation tables. + * + * FULL_PLT Created for a PCREL21B relocation against a dynamic symbol. + * Requires the creation of a PLTOFF entry. This does not + * require any dynamic relocations. + * + * PLTOFF Created by PLTOFF relocations. For local symbols, this + * is an alternate function descriptor, and in shared libraries + * requires two REL relocations. Note that this cannot be + * transformed into an FPTR relocation, since it must be in + * range of the GP. For dynamic symbols, this is a function + * descriptor for a MIN_PLT entry, and requires one IPLT reloc. + * + * MIN_PLT Created by PLTOFF entries against dynamic symbols. This + * does not reqire dynamic relocations. + */ + +#define USE_RELA /* we want RELA relocs, not REL */ + +#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0]))) + +typedef struct bfd_hash_entry *(*new_hash_entry_func) + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); + +/* In dynamically (linker-) created sections, we generally need to keep track + of the place a symbol or expression got allocated to. This is done via hash + tables that store entries of the following type. */ + +struct elfNN_ia64_dyn_sym_info +{ + /* The addend for which this entry is relevant. */ + bfd_vma addend; + + /* Next addend in the list. */ + struct elfNN_ia64_dyn_sym_info *next; + + bfd_vma got_offset; + bfd_vma fptr_offset; + bfd_vma pltoff_offset; + bfd_vma plt_offset; + bfd_vma plt2_offset; + + /* The symbol table entry, if any, that this was derrived from. */ + struct elf_link_hash_entry *h; + + /* Used to count non-got, non-plt relocations for delayed sizing + of relocation sections. */ + struct elfNN_ia64_dyn_reloc_entry + { + struct elfNN_ia64_dyn_reloc_entry *next; + asection *srel; + int type; + int count; + } *reloc_entries; + + /* True when the section contents have been updated. */ + unsigned got_done : 1; + unsigned fptr_done : 1; + unsigned pltoff_done : 1; + + /* True for the different kinds of linker data we want created. */ + unsigned want_got : 1; + unsigned want_fptr : 1; + unsigned want_ltoff_fptr : 1; + unsigned want_plt : 1; + unsigned want_plt2 : 1; + unsigned want_pltoff : 1; +}; + +struct elfNN_ia64_local_hash_entry +{ + struct bfd_hash_entry root; + struct elfNN_ia64_dyn_sym_info *info; +}; + +struct elfNN_ia64_local_hash_table +{ + struct bfd_hash_table root; + /* No additional fields for now. */ +}; + +struct elfNN_ia64_link_hash_entry +{ + struct elf_link_hash_entry root; + struct elfNN_ia64_dyn_sym_info *info; +}; + +struct elfNN_ia64_link_hash_table +{ + /* The main hash table */ + struct elf_link_hash_table root; + + asection *got_sec; /* the linkage table section (or NULL) */ + asection *rel_got_sec; /* dynamic relocation section for same */ + asection *fptr_sec; /* function descriptor table (or NULL) */ + asection *plt_sec; /* the primary plt section (or NULL) */ + asection *pltoff_sec; /* private descriptors for plt (or NULL) */ + asection *rel_pltoff_sec; /* dynamic relocation section for same */ + + bfd_size_type minplt_entries; /* number of minplt entries */ + + struct elfNN_ia64_local_hash_table loc_hash_table; +}; + +#define elfNN_ia64_hash_table(p) \ + ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) + +static bfd_reloc_status_type elfNN_ia64_reloc + PARAMS ((bfd *abfd, arelent *reloc, asymbol *sym, PTR data, + asection *input_section, bfd *output_bfd, char **error_message)); +static reloc_howto_type * lookup_howto + PARAMS ((unsigned int rtype)); +static reloc_howto_type *elfNN_ia64_reloc_type_lookup + PARAMS ((bfd *abfd, bfd_reloc_code_real_type bfd_code)); +static void elfNN_ia64_info_to_howto + PARAMS ((bfd *abfd, arelent *bfd_reloc, ElfNN_Internal_Rela *elf_reloc)); +static boolean elfNN_ia64_relax_section + PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, + boolean *again)); +static boolean elfNN_ia64_section_from_shdr + PARAMS ((bfd *, ElfNN_Internal_Shdr *, char *)); +static boolean elfNN_ia64_fake_sections + PARAMS ((bfd *abfd, ElfNN_Internal_Shdr *hdr, asection *sec)); +static boolean elfNN_ia64_add_symbol_hook + PARAMS ((bfd *abfd, struct bfd_link_info *info, const Elf_Internal_Sym *sym, + const char **namep, flagword *flagsp, asection **secp, + bfd_vma *valp)); +static int elfNN_ia64_additional_program_headers + PARAMS ((bfd *abfd)); +static boolean elfNN_ia64_is_local_label_name + PARAMS ((bfd *abfd, const char *name)); +static boolean elfNN_ia64_dynamic_symbol_p + PARAMS ((struct elf_link_hash_entry *h, struct bfd_link_info *info)); +static boolean elfNN_ia64_local_hash_table_init + PARAMS ((struct elfNN_ia64_local_hash_table *ht, bfd *abfd, + new_hash_entry_func new)); +static struct bfd_hash_entry *elfNN_ia64_new_loc_hash_entry + PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table, + const char *string)); +static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry + PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table, + const char *string)); +static struct bfd_link_hash_table *elfNN_ia64_hash_table_create + PARAMS ((bfd *abfd)); +static struct elfNN_ia64_local_hash_entry *elfNN_ia64_local_hash_lookup + PARAMS ((struct elfNN_ia64_local_hash_table *table, const char *string, + boolean create, boolean copy)); +static void elfNN_ia64_dyn_sym_traverse + PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info, + boolean (*func)(struct elfNN_ia64_dyn_sym_info *, PTR), + PTR info)); +static boolean elfNN_ia64_create_dynamic_sections + PARAMS ((bfd *abfd, struct bfd_link_info *info)); +static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info + PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info, + struct elf_link_hash_entry *h, + bfd *abfd, const Elf_Internal_Rela *rel, boolean create)); +static asection *get_got + PARAMS ((bfd *abfd, struct bfd_link_info *info, + struct elfNN_ia64_link_hash_table *ia64_info)); +static asection *get_fptr + PARAMS ((bfd *abfd, struct bfd_link_info *info, + struct elfNN_ia64_link_hash_table *ia64_info)); +static asection *get_pltoff + PARAMS ((bfd *abfd, struct bfd_link_info *info, + struct elfNN_ia64_link_hash_table *ia64_info)); +static asection *get_reloc_section + PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info, + asection *sec, boolean create)); +static boolean count_dyn_reloc + PARAMS ((bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i, + asection *srel, int type)); +static boolean elfNN_ia64_check_relocs + PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec, + const Elf_Internal_Rela *relocs)); +static boolean elfNN_ia64_adjust_dynamic_symbol + PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h)); +static unsigned long global_sym_index + PARAMS ((struct elf_link_hash_entry *h)); +static boolean allocate_fptr + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_global_data_got + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_global_fptr_got + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_local_got + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_pltoff_entries + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_plt_entries + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_plt2_entries + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean allocate_dynrel_entries + PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data)); +static boolean elfNN_ia64_size_dynamic_sections + PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); +static bfd_reloc_status_type elfNN_ia64_install_value + PARAMS ((bfd *abfd, bfd_byte *hit_addr, bfd_vma val, unsigned int r_type)); +static void elfNN_ia64_install_dyn_reloc + PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec, + asection *srel, bfd_vma offset, unsigned int type, + long dynindx, bfd_vma addend)); +static bfd_vma set_got_entry + PARAMS ((bfd *abfd, struct bfd_link_info *info, + struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx, + bfd_vma addend, bfd_vma value, unsigned int dyn_r_type)); +static bfd_vma set_fptr_entry + PARAMS ((bfd *abfd, struct bfd_link_info *info, + struct elfNN_ia64_dyn_sym_info *dyn_i, + bfd_vma value)); +static bfd_vma set_pltoff_entry + PARAMS ((bfd *abfd, struct bfd_link_info *info, + struct elfNN_ia64_dyn_sym_info *dyn_i, + bfd_vma value, boolean)); +static boolean elfNN_ia64_final_link + PARAMS ((bfd *abfd, struct bfd_link_info *info)); +static boolean elfNN_ia64_relocate_section + PARAMS ((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)); +static boolean elfNN_ia64_finish_dynamic_symbol + PARAMS ((bfd *output_bfd, struct bfd_link_info *info, + struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); +static boolean elfNN_ia64_finish_dynamic_sections + PARAMS ((bfd *abfd, struct bfd_link_info *info)); +static boolean elfNN_ia64_set_private_flags + PARAMS ((bfd *abfd, flagword flags)); +static boolean elfNN_ia64_copy_private_bfd_data + PARAMS ((bfd *ibfd, bfd *obfd)); +static boolean elfNN_ia64_merge_private_bfd_data + PARAMS ((bfd *ibfd, bfd *obfd)); +static boolean elfNN_ia64_print_private_bfd_data + PARAMS ((bfd *abfd, PTR ptr)); + + +/* ia64-specific relocation */ + +/* Perform a relocation. Not much to do here as all the hard work is + done in elfNN_ia64_final_link_relocate. */ +static bfd_reloc_status_type +elfNN_ia64_reloc (abfd, reloc, sym, data, input_section, + output_bfd, error_message) + bfd *abfd; + arelent *reloc; + asymbol *sym; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + if (output_bfd) + { + reloc->address += input_section->output_offset; + return bfd_reloc_ok; + } + *error_message = "Unsupported call to elfNN_ia64_reloc"; + return bfd_reloc_notsupported; +} + +#define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \ + HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \ + elfNN_ia64_reloc, NAME, false, 0, 0, IN) + +/* This table has to be sorted according to increasing number of the + TYPE field. */ +static reloc_howto_type ia64_howto_table[] = + { + IA64_HOWTO (R_IA64_NONE, "NONE", 0, false, true), + + IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, false, true), + IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, false, true), + IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, false, true), + IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, false, true), + IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, false, true), + IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, false, true), + IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, false, true), + IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, false, true), + IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, false, true), + IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, false, true), + IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, false, true), + IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, false, true), + IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, false, true), + + IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, false, true), + IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, false, true), + IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, false, true), + IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, false, true), + IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, false, true), + IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, false, true), + IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, false, true), + IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, true, true), + IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, true, true), + IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, true, true), + IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, true, true), + IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, true, true), + IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, true, true), + IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, true, true), + IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, true, true), + + IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, false, true), + IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, false, true), + IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, false, true), + IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_SEGBASE, "SEGBASE", 4, false, true), + IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, false, true), + IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, false, true), + IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, false, true), + IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, false, true), + IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, false, true), + IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, false, true), + IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, false, true), + IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, false, true), + IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, false, true), + IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, false, true), + IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, false, true), + IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, false, true), + IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, false, true), + + IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, true, true), + IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, true, true), + IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, true, true), + + IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, false, true), + IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, false, true), + IA64_HOWTO (R_IA64_EPLTMSB, "EPLTMSB", 4, false, true), + IA64_HOWTO (R_IA64_EPLTLSB, "EPLTLSB", 4, false, true), + IA64_HOWTO (R_IA64_COPY, "COPY", 4, false, true), + IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, false, true), + IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, false, true), + + IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, false, false), + IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 8, false, false), + IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 8, false, false), + IA64_HOWTO (R_IA64_LTOFF_TP22, "LTOFF_TP22", 0, false, false), + }; + +static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1]; + +/* Given a BFD reloc type, return the matching HOWTO structure. */ + +static reloc_howto_type* +lookup_howto (rtype) + unsigned int rtype; +{ + static int inited = 0; + int i; + + if (!inited) + { + inited = 1; + + memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index)); + for (i = 0; i < NELEMS (ia64_howto_table); ++i) + elf_code_to_howto_index[ia64_howto_table[i].type] = i; + } + + BFD_ASSERT (rtype <= R_IA64_MAX_RELOC_CODE); + i = elf_code_to_howto_index[rtype]; + if (i >= NELEMS (ia64_howto_table)) + return 0; + return ia64_howto_table + i; +} + +static reloc_howto_type* +elfNN_ia64_reloc_type_lookup (abfd, bfd_code) + bfd *abfd; + bfd_reloc_code_real_type bfd_code; +{ + unsigned int rtype; + + switch (bfd_code) + { + case BFD_RELOC_NONE: rtype = R_IA64_NONE; break; + + case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break; + case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break; + case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break; + + case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break; + case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break; + case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break; + case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break; + + case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break; + case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break; + case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break; + case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break; + case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break; + case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break; + + case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break; + case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break; + + case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break; + case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break; + case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break; + case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break; + case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break; + case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break; + case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break; + case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break; + case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break; + + case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break; + case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break; + case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break; + case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break; + case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break; + case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break; + case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break; + case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break; + case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break; + case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break; + case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break; + + case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break; + case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break; + case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break; + case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break; + + case BFD_RELOC_IA64_SEGBASE: rtype = R_IA64_SEGBASE; break; + case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break; + case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break; + case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break; + case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break; + + case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break; + case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break; + case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break; + case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break; + + case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break; + case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break; + case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break; + case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break; + + case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break; + case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break; + case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break; + case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break; + + case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break; + case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break; + case BFD_RELOC_IA64_EPLTMSB: rtype = R_IA64_EPLTMSB; break; + case BFD_RELOC_IA64_EPLTLSB: rtype = R_IA64_EPLTLSB; break; + case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break; + case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break; + case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break; + + case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break; + case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break; + case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break; + case BFD_RELOC_IA64_LTOFF_TP22: rtype = R_IA64_LTOFF_TP22; break; + + default: return 0; + } + return lookup_howto (rtype); +} + +/* Given a ELF reloc, return the matching HOWTO structure. */ + +static void +elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc) + bfd *abfd; + arelent *bfd_reloc; + ElfNN_Internal_Rela *elf_reloc; +{ + bfd_reloc->howto = lookup_howto (ELFNN_R_TYPE (elf_reloc->r_info)); +} + +#define PLT_HEADER_SIZE (3 * 16) +#define PLT_MIN_ENTRY_SIZE (1 * 16) +#define PLT_FULL_ENTRY_SIZE (2 * 16) +#define PLT_RESERVED_WORDS 3 + +static const bfd_byte plt_header[PLT_HEADER_SIZE] = +{ + 0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */ + 0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */ + 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ + 0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */ + 0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */ + 0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */ + 0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */ + 0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */ + 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ +}; + +static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] = +{ + 0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */ + 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */ + 0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */ +}; + +static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] = +{ + 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */ + 0x00, 0x41, 0x3c, 0x30, 0x28, 0xc0, /* ld8 r16=[r15],8 */ + 0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */ + 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */ + 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ + 0x60, 0x00, 0x80, 0x00 /* br.few b6;; */ +}; + +#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" + +/* Select out of range branch fixup type. Note that Itanium does + not support brl, and so it gets emulated by the kernel. */ +#undef USE_BRL + +static const bfd_byte oor_brl[16] = +{ + 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */ + 0x00, 0x00, 0x00, 0xc0 +}; + +static const bfd_byte oor_ip[48] = +{ + 0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */ + 0x01, 0x00, 0x00, 0x60, + 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */ + 0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */ + 0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */ + 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */ + 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */ + 0x60, 0x00, 0x80, 0x00 /* br b6;; */ +}; + +/* These functions do relaxation for IA-64 ELF. + + This is primarily to support branches to targets out of range; + relaxation of R_IA64_LTOFF22X and R_IA64_LDXMOV not yet supported. */ + +static boolean +elfNN_ia64_relax_section (abfd, sec, link_info, again) + bfd *abfd; + asection *sec; + struct bfd_link_info *link_info; + boolean *again; +{ + struct one_fixup + { + struct one_fixup *next; + asection *tsec; + bfd_vma toff; + bfd_vma trampoff; + }; + + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Rela *internal_relocs; + Elf_Internal_Rela *free_relocs; + Elf_Internal_Rela *irel, *irelend; + bfd_byte *contents; + bfd_byte *free_contents; + ElfNN_External_Sym *extsyms; + ElfNN_External_Sym *free_extsyms; + struct elfNN_ia64_link_hash_table *ia64_info; + struct one_fixup *fixups = NULL; + boolean changed_contents = false; + boolean changed_relocs = false; + + /* Assume we're not going to change any sizes, and we'll only need + one pass. */ + *again = false; + + /* Nothing to do if there are no relocations. */ + if ((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; + + /* Load the relocations for this section. */ + internal_relocs = (_bfd_elfNN_link_read_relocs + (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, + link_info->keep_memory)); + if (internal_relocs == NULL) + goto error_return; + free_relocs = NULL; + if (! link_info->keep_memory) + free_relocs = internal_relocs; + + ia64_info = elfNN_ia64_hash_table (link_info); + irelend = internal_relocs + sec->reloc_count; + + for (irel = internal_relocs; irel < irelend; irel++) + if (ELFNN_R_TYPE (irel->r_info) == (int) R_IA64_PCREL21B) + break; + + /* No branch-type relocations. */ + if (irel == irelend) + { + if (free_relocs != NULL) + free (free_relocs); + return true; + } + + /* Get the section contents. */ + free_contents = NULL; + if (elf_section_data (sec)->this_hdr.contents != NULL) + contents = elf_section_data (sec)->this_hdr.contents; + else + { + contents = (bfd_byte *) bfd_malloc (sec->_raw_size); + if (contents == NULL) + goto error_return; + free_contents = contents; + + if (! bfd_get_section_contents (abfd, sec, contents, + (file_ptr) 0, sec->_raw_size)) + goto error_return; + } + + /* Read this BFD's symbols. */ + free_extsyms = NULL; + if (symtab_hdr->contents != NULL) + extsyms = (ElfNN_External_Sym *) symtab_hdr->contents; + else + { + extsyms = (ElfNN_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; + } + + for (; irel < irelend; irel++) + { + bfd_vma symaddr, reladdr, trampoff, toff, roff; + Elf_Internal_Sym isym; + asection *tsec; + struct one_fixup *f; + + if (ELFNN_R_TYPE (irel->r_info) != (int) R_IA64_PCREL21B) + continue; + + /* Get the value of the symbol referred to by the reloc. */ + if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info) + { + /* A local symbol. */ + bfd_elfNN_swap_symbol_in (abfd, + extsyms + ELFNN_R_SYM (irel->r_info), + &isym); + if (isym.st_shndx == SHN_UNDEF) + continue; /* We can't do anthing with undefined symbols. */ + else if (isym.st_shndx == SHN_ABS) + tsec = bfd_abs_section_ptr; + else if (isym.st_shndx == SHN_COMMON) + tsec = bfd_com_section_ptr; + else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) + tsec = bfd_section_from_elf_index (abfd, isym.st_shndx); + else + continue; /* who knows. */ + + toff = isym.st_value; + } + else + { + unsigned long indx; + struct elf_link_hash_entry *h; + struct elfNN_ia64_dyn_sym_info *dyn_i; + + indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info; + h = elf_sym_hashes (abfd)[indx]; + BFD_ASSERT (h != NULL); + + 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; + + dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, false); + + /* For branches to dynamic symbols, we're interested instead + in a branch to the PLT entry. */ + if (dyn_i && dyn_i->want_plt2) + { + tsec = ia64_info->plt_sec; + toff = dyn_i->plt2_offset; + } + else + { + /* We can't do anthing with undefined symbols. */ + if (h->root.type == bfd_link_hash_undefined + || h->root.type == bfd_link_hash_undefweak) + continue; + + tsec = h->root.u.def.section; + toff = h->root.u.def.value; + } + } + + symaddr = (tsec->output_section->vma + + tsec->output_offset + + toff + + irel->r_addend); + + roff = irel->r_offset; + reladdr = (sec->output_section->vma + + sec->output_offset + + roff) & -4; + + /* If the branch is in range, no need to do anything. */ + if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000 + && (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0) + continue; + + /* If the branch and target are in the same section, you've + got one honking big section and we can't help you. You'll + get an error message later. */ + if (tsec == sec) + continue; + + /* Look for an existing fixup to this address. */ + for (f = fixups; f ; f = f->next) + if (f->tsec == tsec && f->toff == toff) + break; + + if (f == NULL) + { + /* Two alternatives: If it's a branch to a PLT entry, we can + make a copy of the FULL_PLT entry. Otherwise, we'll have + to use a `brl' insn to get where we're going. */ + + int size; + + if (tsec == ia64_info->plt_sec) + size = sizeof (plt_full_entry); + else + { +#ifdef USE_BRL + size = sizeof (oor_brl); +#else + size = sizeof (oor_ip); +#endif + } + + /* Resize the current section to make room for the new branch. */ + trampoff = (sec->_cooked_size + 15) & -16; + contents = (bfd_byte *) bfd_realloc (contents, trampoff + size); + if (contents == NULL) + goto error_return; + sec->_cooked_size = trampoff + size; + + if (tsec == ia64_info->plt_sec) + { + memcpy (contents + trampoff, plt_full_entry, size); + + /* Hijack the old relocation for use as the PLTOFF reloc. */ + irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), + R_IA64_PLTOFF22); + irel->r_offset = trampoff; + } + else + { +#ifdef USE_BRL + memcpy (contents + trampoff, oor_brl, size); + irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), + R_IA64_PCREL60B); + irel->r_offset = trampoff + 2; +#else + memcpy (contents + trampoff, oor_ip, size); + irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), + R_IA64_PCREL64I); + irel->r_addend -= 16; + irel->r_offset = trampoff + 2; +#endif + } + + /* Record the fixup so we don't do it again this section. */ + f = (struct one_fixup *) bfd_malloc (sizeof (*f)); + f->next = fixups; + f->tsec = tsec; + f->toff = toff; + f->trampoff = trampoff; + fixups = f; + } + else + { + /* Nop out the reloc, since we're finalizing things here. */ + irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE); + } + + /* Fix up the existing branch to hit the trampoline. Hope like + hell this doesn't overflow too. */ + if (elfNN_ia64_install_value (abfd, contents + roff, + f->trampoff - (roff & -4), + R_IA64_PCREL21B) != bfd_reloc_ok) + goto error_return; + + changed_contents = true; + changed_relocs = true; + } + + /* Clean up and go home. */ + while (fixups) + { + struct one_fixup *f = fixups; + fixups = fixups->next; + free (f); + } + + if (changed_relocs) + elf_section_data (sec)->relocs = internal_relocs; + else if (free_relocs != NULL) + free (free_relocs); + + if (changed_contents) + elf_section_data (sec)->this_hdr.contents = 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 = 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 = changed_contents || 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; +} + +/* Handle an IA-64 specific section when reading an object file. This + is called when elfcode.h finds a section with an unknown type. */ + +static boolean +elfNN_ia64_section_from_shdr (abfd, hdr, name) + bfd *abfd; + ElfNN_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_IA_64_UNWIND: + if (strcmp (name, ELF_STRING_ia64_unwind) != 0) + return false; + break; + + case SHT_IA_64_EXT: + if (strcmp (name, ELF_STRING_ia64_archext) != 0) + return false; + break; + + default: + return false; + } + + if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) + return false; + newsect = hdr->bfd_section; + + return true; +} + +/* Convert IA-64 specific section flags to bfd internal section flags. */ + +/* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV + flag. */ + +static boolean +elfNN_ia64_section_flags (flags, hdr) + flagword *flags; + ElfNN_Internal_Shdr *hdr; +{ + if (hdr->sh_flags & SHF_IA_64_SHORT) + *flags |= SEC_SMALL_DATA; + + return true; +} + +/* Set the correct type for an IA-64 ELF section. We do this by the + section name, which is a hack, but ought to work. */ + +static boolean +elfNN_ia64_fake_sections (abfd, hdr, sec) + bfd *abfd; + ElfNN_Internal_Shdr *hdr; + asection *sec; +{ + register const char *name; + + name = bfd_get_section_name (abfd, sec); + + if (strcmp (name, ELF_STRING_ia64_unwind) == 0) + hdr->sh_type = SHT_IA_64_UNWIND; + else if (strcmp (name, ELF_STRING_ia64_archext) == 0) + hdr->sh_type = SHT_IA_64_EXT; + else if (strcmp (name, ".reloc") == 0) + /* + * This is an ugly, but unfortunately necessary hack that is + * needed when producing EFI binaries on IA-64. It tells + * elf.c:elf_fake_sections() not to consider ".reloc" as a section + * containing ELF relocation info. We need this hack in order to + * be able to generate ELF binaries that can be translated into + * EFI applications (which are essentially COFF objects). Those + * files contain a COFF ".reloc" section inside an ELFNN object, + * which would normally cause BFD to segfault because it would + * attempt to interpret this section as containing relocation + * entries for section "oc". With this hack enabled, ".reloc" + * will be treated as a normal data section, which will avoid the + * segfault. However, you won't be able to create an ELFNN binary + * with a section named "oc" that needs relocations, but that's + * the kind of ugly side-effects you get when detecting section + * types based on their names... In practice, this limitation is + * unlikely to bite. + */ + hdr->sh_type = SHT_PROGBITS; + + if (sec->flags & SEC_SMALL_DATA) + hdr->sh_flags |= SHF_IA_64_SHORT; + + 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 +elfNN_ia64_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; + flagword *flagsp; + 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; +} + +/* Return the number of additional phdrs we will need. */ + +static int +elfNN_ia64_additional_program_headers (abfd) + bfd *abfd; +{ + asection *s; + int ret = 0; + + /* See if we need a PT_IA_64_ARCHEXT segment. */ + s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); + if (s && (s->flags & SEC_LOAD)) + ++ret; + + /* See if we need a PT_IA_64_UNWIND segment. */ + s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); + if (s && (s->flags & SEC_LOAD)) + ++ret; + + return ret; +} + +static boolean +elfNN_ia64_modify_segment_map (abfd) + bfd *abfd; +{ + struct elf_segment_map *m, **pm; + asection *s; + + /* If we need a PT_IA_64_ARCHEXT segment, it must come before + all PT_LOAD segments. */ + s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext); + if (s && (s->flags & SEC_LOAD)) + { + for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) + if (m->p_type == PT_IA_64_ARCHEXT) + break; + if (m == NULL) + { + m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); + if (m == NULL) + return false; + + m->p_type = PT_IA_64_ARCHEXT; + m->count = 1; + m->sections[0] = s; + + /* We want to put it after the PHDR and INTERP segments. */ + pm = &elf_tdata (abfd)->segment_map; + while (*pm != NULL + && ((*pm)->p_type == PT_PHDR + || (*pm)->p_type == PT_INTERP)) + pm = &(*pm)->next; + + m->next = *pm; + *pm = m; + } + } + + /* Install the PT_IA_64_UNWIND segment, if needed. */ + s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); + if (s && (s->flags & SEC_LOAD)) + { + for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) + if (m->p_type == PT_IA_64_UNWIND) + break; + if (m == NULL) + { + m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); + if (m == NULL) + return false; + + m->p_type = PT_IA_64_UNWIND; + m->count = 1; + m->sections[0] = s; + m->next = NULL; + + /* We want to put it last. */ + pm = &elf_tdata (abfd)->segment_map; + while (*pm != NULL) + pm = &(*pm)->next; + *pm = m; + } + } + + /* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of + the input sections for each output section in the segment and testing + for SHF_IA_64_NORECOV on each. */ + for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) + if (m->p_type == PT_LOAD) + { + int i; + for (i = m->count - 1; i >= 0; --i) + { + struct bfd_link_order *order = m->sections[i]->link_order_head; + while (order) + { + if (order->type == bfd_indirect_link_order) + { + asection *is = order->u.indirect.section; + bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags; + if (flags & SHF_IA_64_NORECOV) + { + m->p_flags |= PF_IA_64_NORECOV; + goto found; + } + } + order = order->next; + } + } + found:; + } + + return true; +} + + +/* According to the Tahoe assembler spec, all labels starting with a + '.' are local. */ + +static boolean +elfNN_ia64_is_local_label_name (abfd, name) + bfd *abfd; + const char *name; +{ + return name[0] == '.'; +} + +/* Should we do dynamic things to this symbol? */ + +static boolean +elfNN_ia64_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; + + 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; +} + +static boolean +elfNN_ia64_local_hash_table_init (ht, abfd, new) + struct elfNN_ia64_local_hash_table *ht; + bfd *abfd; + new_hash_entry_func new; +{ + memset (ht, 0, sizeof(*ht)); + return bfd_hash_table_init (&ht->root, new); +} + +static struct bfd_hash_entry* +elfNN_ia64_new_loc_hash_entry (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; +{ + struct elfNN_ia64_local_hash_entry *ret; + ret = (struct elfNN_ia64_local_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (!ret) + ret = bfd_hash_allocate (table, sizeof (*ret)); + + if (!ret) + return 0; + + /* Initialize our local data. All zeros, and definitely easier + than setting a handful of bit fields. */ + memset (ret, 0, sizeof(*ret)); + + /* Call the allocation method of the superclass. */ + ret = ((struct elfNN_ia64_local_hash_entry *) + bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); + + return (struct bfd_hash_entry *) ret; +} + +static struct bfd_hash_entry* +elfNN_ia64_new_elf_hash_entry (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; +{ + struct elfNN_ia64_link_hash_entry *ret; + ret = (struct elfNN_ia64_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (!ret) + ret = bfd_hash_allocate (table, sizeof (*ret)); + + if (!ret) + return 0; + + /* Initialize our local data. All zeros, and definitely easier + than setting a handful of bit fields. */ + memset (ret, 0, sizeof(*ret)); + + /* Call the allocation method of the superclass. */ + ret = ((struct elfNN_ia64_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); + + return (struct bfd_hash_entry *) ret; +} + +static void +elfNN_ia64_hash_copy_indirect (xdir, xind) + struct elf_link_hash_entry *xdir, *xind; +{ + struct elfNN_ia64_link_hash_entry *dir, *ind; + + dir = (struct elfNN_ia64_link_hash_entry *)xdir; + ind = (struct elfNN_ia64_link_hash_entry *)xind; + + /* Copy down any references that we may have already seen to the + symbol which just became indirect. */ + + dir->root.elf_link_hash_flags |= + (ind->root.elf_link_hash_flags + & (ELF_LINK_HASH_REF_DYNAMIC + | ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_REF_REGULAR_NONWEAK)); + + /* Copy over the got and plt data. This would have been done + by check_relocs. */ + + if (dir->info == NULL) + { + struct elfNN_ia64_dyn_sym_info *dyn_i; + + dir->info = dyn_i = ind->info; + ind->info = NULL; + + /* Fix up the dyn_sym_info pointers to the global symbol. */ + for (; dyn_i; dyn_i = dyn_i->next) + dyn_i->h = &dir->root; + } + BFD_ASSERT (ind->info == NULL); + + /* Copy over the dynindx. */ + + if (dir->root.dynindx == -1) + { + dir->root.dynindx = ind->root.dynindx; + dir->root.dynstr_index = ind->root.dynstr_index; + ind->root.dynindx = -1; + ind->root.dynstr_index = 0; + } + BFD_ASSERT (ind->root.dynindx == -1); +} + +static void +elfNN_ia64_hash_hide_symbol (info, xh) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + struct elf_link_hash_entry *xh; +{ + struct elfNN_ia64_link_hash_entry *h; + struct elfNN_ia64_dyn_sym_info *dyn_i; + + h = (struct elfNN_ia64_link_hash_entry *)xh; + + h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + h->root.dynindx = -1; + + for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next) + dyn_i->want_plt2 = 0; +} + +/* Create the derived linker hash table. The IA-64 ELF port uses this + derived hash table to keep information specific to the IA-64 ElF + linker (without using static variables). */ + +static struct bfd_link_hash_table* +elfNN_ia64_hash_table_create (abfd) + bfd *abfd; +{ + struct elfNN_ia64_link_hash_table *ret; + + ret = bfd_alloc (abfd, sizeof (*ret)); + if (!ret) + return 0; + if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, + elfNN_ia64_new_elf_hash_entry)) + { + bfd_release (abfd, ret); + return 0; + } + + if (!elfNN_ia64_local_hash_table_init (&ret->loc_hash_table, abfd, + elfNN_ia64_new_loc_hash_entry)) + return 0; + return &ret->root.root; +} + +/* Look up an entry in a Alpha ELF linker hash table. */ + +static INLINE struct elfNN_ia64_local_hash_entry * +elfNN_ia64_local_hash_lookup(table, string, create, copy) + struct elfNN_ia64_local_hash_table *table; + const char *string; + boolean create, copy; +{ + return ((struct elfNN_ia64_local_hash_entry *) + bfd_hash_lookup (&table->root, string, create, copy)); +} + +/* Traverse both local and global hash tables. */ + +struct elfNN_ia64_dyn_sym_traverse_data +{ + boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR)); + PTR data; +}; + +static boolean +elfNN_ia64_global_dyn_sym_thunk (xentry, xdata) + struct bfd_hash_entry *xentry; + PTR xdata; +{ + struct elfNN_ia64_link_hash_entry *entry + = (struct elfNN_ia64_link_hash_entry *) xentry; + struct elfNN_ia64_dyn_sym_traverse_data *data + = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; + struct elfNN_ia64_dyn_sym_info *dyn_i; + + for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next) + if (! (*data->func) (dyn_i, data->data)) + return false; + return true; +} + +static boolean +elfNN_ia64_local_dyn_sym_thunk (xentry, xdata) + struct bfd_hash_entry *xentry; + PTR xdata; +{ + struct elfNN_ia64_local_hash_entry *entry + = (struct elfNN_ia64_local_hash_entry *) xentry; + struct elfNN_ia64_dyn_sym_traverse_data *data + = (struct elfNN_ia64_dyn_sym_traverse_data *) xdata; + struct elfNN_ia64_dyn_sym_info *dyn_i; + + for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next) + if (! (*data->func) (dyn_i, data->data)) + return false; + return true; +} + +static void +elfNN_ia64_dyn_sym_traverse (ia64_info, func, data) + struct elfNN_ia64_link_hash_table *ia64_info; + boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR)); + PTR data; +{ + struct elfNN_ia64_dyn_sym_traverse_data xdata; + + xdata.func = func; + xdata.data = data; + + elf_link_hash_traverse (&ia64_info->root, + elfNN_ia64_global_dyn_sym_thunk, &xdata); + bfd_hash_traverse (&ia64_info->loc_hash_table.root, + elfNN_ia64_local_dyn_sym_thunk, &xdata); +} + +static boolean +elfNN_ia64_create_dynamic_sections (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + struct elf_link_hash_entry *h; + asection *s; + + if (! _bfd_elf_create_dynamic_sections (abfd, info)) + return false; + + ia64_info = elfNN_ia64_hash_table (info); + + ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt"); + ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got"); + + { + flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec); + bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags); + } + + if (!get_pltoff (abfd, info, ia64_info)) + return false; + + s = bfd_make_section(abfd, ".rela.IA_64.pltoff"); + 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; + ia64_info->rel_pltoff_sec = s; + + 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; + ia64_info->rel_got_sec = s; + + return true; +} + +/* Find and/or create a descriptor for dynamic symbol info. This will + vary based on global or local symbol, and the addend to the reloc. */ + +static struct elfNN_ia64_dyn_sym_info * +get_dyn_sym_info (ia64_info, h, abfd, rel, create) + struct elfNN_ia64_link_hash_table *ia64_info; + struct elf_link_hash_entry *h; + bfd *abfd; + const Elf_Internal_Rela *rel; + boolean create; +{ + struct elfNN_ia64_dyn_sym_info **pp; + struct elfNN_ia64_dyn_sym_info *dyn_i; + bfd_vma addend = rel ? rel->r_addend : 0; + + if (h) + pp = &((struct elfNN_ia64_link_hash_entry *)h)->info; + else + { + struct elfNN_ia64_local_hash_entry *loc_h; + char *addr_name; + size_t len; + + /* Construct a string for use in the elfNN_ia64_local_hash_table. + The name describes what was once anonymous memory. */ + + len = sizeof(void*)*2 + 1 + sizeof(bfd_vma)*4 + 1 + 1; + len += 10; /* %p slop */ + + addr_name = alloca (len); + sprintf (addr_name, "%p:%lx", abfd, ELFNN_R_SYM (rel->r_info)); + + /* Collect the canonical entry data for this address. */ + loc_h = elfNN_ia64_local_hash_lookup (&ia64_info->loc_hash_table, + addr_name, create, create); + BFD_ASSERT (loc_h); + + pp = &loc_h->info; + } + + for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp) + pp = &dyn_i->next; + + if (dyn_i == NULL && create) + { + dyn_i = (struct elfNN_ia64_dyn_sym_info *) + bfd_zalloc (abfd, sizeof *dyn_i); + *pp = dyn_i; + dyn_i->addend = addend; + } + + return dyn_i; +} + +static asection * +get_got (abfd, info, ia64_info) + bfd *abfd; + struct bfd_link_info *info; + struct elfNN_ia64_link_hash_table *ia64_info; +{ + asection *got, *srel; + bfd *dynobj; + + got = ia64_info->got_sec; + if (!got) + { + flagword flags; + + dynobj = ia64_info->root.dynobj; + if (!dynobj) + ia64_info->root.dynobj = dynobj = abfd; + if (!_bfd_elf_create_got_section (dynobj, info)) + return 0; + + got = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (got); + ia64_info->got_sec = got; + + flags = bfd_get_section_flags (abfd, got); + bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags); + } + + return got; +} + +/* Create function descriptor section (.opd). This section is called .opd + because it contains "official prodecure descriptors". The "official" + refers to the fact that these descriptors are used when taking the address + of a procedure, thus ensuring a unique address for each procedure. */ + +static asection * +get_fptr (abfd, info, ia64_info) + bfd *abfd; + struct bfd_link_info *info; + struct elfNN_ia64_link_hash_table *ia64_info; +{ + asection *fptr; + bfd *dynobj; + + fptr = ia64_info->fptr_sec; + if (!fptr) + { + dynobj = ia64_info->root.dynobj; + if (!dynobj) + ia64_info->root.dynobj = dynobj = abfd; + + fptr = bfd_make_section (dynobj, ".opd"); + if (!fptr + || !bfd_set_section_flags (dynobj, fptr, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_READONLY + | SEC_LINKER_CREATED)) + || !bfd_set_section_alignment (abfd, fptr, 4)) + { + BFD_ASSERT (0); + return NULL; + } + + ia64_info->fptr_sec = fptr; + } + + return fptr; +} + +static asection * +get_pltoff (abfd, info, ia64_info) + bfd *abfd; + struct bfd_link_info *info; + struct elfNN_ia64_link_hash_table *ia64_info; +{ + asection *pltoff; + bfd *dynobj; + + pltoff = ia64_info->pltoff_sec; + if (!pltoff) + { + dynobj = ia64_info->root.dynobj; + if (!dynobj) + ia64_info->root.dynobj = dynobj = abfd; + + pltoff = bfd_make_section (dynobj, ELF_STRING_ia64_pltoff); + if (!pltoff + || !bfd_set_section_flags (dynobj, pltoff, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_SMALL_DATA + | SEC_LINKER_CREATED)) + || !bfd_set_section_alignment (abfd, pltoff, 4)) + { + BFD_ASSERT (0); + return NULL; + } + + ia64_info->pltoff_sec = pltoff; + } + + return pltoff; +} + +static asection * +get_reloc_section (abfd, ia64_info, sec, create) + bfd *abfd; + struct elfNN_ia64_link_hash_table *ia64_info; + asection *sec; + boolean create; +{ + const char *srel_name; + asection *srel; + bfd *dynobj; + + srel_name = (bfd_elf_string_from_elf_section + (abfd, elf_elfheader(abfd)->e_shstrndx, + elf_section_data(sec)->rel_hdr.sh_name)); + if (srel_name == NULL) + return NULL; + + BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name (abfd, sec), + srel_name+5) == 0) + || (strncmp (srel_name, ".rel", 4) == 0 + && strcmp (bfd_get_section_name (abfd, sec), + srel_name+4) == 0)); + + dynobj = ia64_info->root.dynobj; + if (!dynobj) + ia64_info->root.dynobj = dynobj = abfd; + + srel = bfd_get_section_by_name (dynobj, srel_name); + if (srel == NULL && create) + { + srel = bfd_make_section (dynobj, srel_name); + if (srel == NULL + || !bfd_set_section_flags (dynobj, srel, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || !bfd_set_section_alignment (dynobj, srel, 3)) + return NULL; + } + + return srel; +} + +static boolean +count_dyn_reloc (abfd, dyn_i, srel, type) + bfd *abfd; + struct elfNN_ia64_dyn_sym_info *dyn_i; + asection *srel; + int type; +{ + struct elfNN_ia64_dyn_reloc_entry *rent; + + for (rent = dyn_i->reloc_entries; rent; rent = rent->next) + if (rent->srel == srel && rent->type == type) + break; + + if (!rent) + { + rent = (struct elfNN_ia64_dyn_reloc_entry *) + bfd_alloc (abfd, sizeof (*rent)); + if (!rent) + return false; + + rent->next = dyn_i->reloc_entries; + rent->srel = srel; + rent->type = type; + rent->count = 0; + dyn_i->reloc_entries = rent; + } + rent->count++; + + return true; +} + +static boolean +elfNN_ia64_check_relocs (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + const Elf_Internal_Rela *relend; + Elf_Internal_Shdr *symtab_hdr; + const Elf_Internal_Rela *rel; + asection *got, *fptr, *srel; + + if (info->relocateable) + return true; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + ia64_info = elfNN_ia64_hash_table (info); + + got = fptr = srel = NULL; + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; ++rel) + { + enum { + NEED_GOT = 1, + NEED_FPTR = 2, + NEED_PLTOFF = 4, + NEED_MIN_PLT = 8, + NEED_FULL_PLT = 16, + NEED_DYNREL = 32, + NEED_LTOFF_FPTR = 64, + }; + + struct elf_link_hash_entry *h = NULL; + unsigned long r_symndx = ELFNN_R_SYM (rel->r_info); + struct elfNN_ia64_dyn_sym_info *dyn_i; + int need_entry; + boolean maybe_dynamic; + int dynrel_type; + + if (r_symndx >= symtab_hdr->sh_info) + { + /* We're dealing with a global symbol -- find its hash entry + and mark it as being referenced. */ + long indx = r_symndx - symtab_hdr->sh_info; + h = elf_sym_hashes (abfd)[indx]; + 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; + + h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; + } + + /* We can only get preliminary data on whether a symbol is + locally or externally defined, as not all of the input files + have yet been processed. Do something with what we know, as + this may help reduce memory usage and processing time later. */ + maybe_dynamic = false; + if (h && ((info->shared && ! info->symbolic) + || ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) + || h->root.type == bfd_link_hash_defweak)) + maybe_dynamic = true; + + need_entry = 0; + switch (ELFNN_R_TYPE (rel->r_info)) + { + case R_IA64_TPREL22: + case R_IA64_TPREL64MSB: + case R_IA64_TPREL64LSB: + case R_IA64_LTOFF_TP22: + return false; + + case R_IA64_LTOFF_FPTR22: + case R_IA64_LTOFF_FPTR64I: + case R_IA64_LTOFF_FPTR64MSB: + case R_IA64_LTOFF_FPTR64LSB: + need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR; + break; + + case R_IA64_FPTR64I: + case R_IA64_FPTR32MSB: + case R_IA64_FPTR32LSB: + case R_IA64_FPTR64MSB: + case R_IA64_FPTR64LSB: + if (info->shared || h) + need_entry = NEED_FPTR | NEED_DYNREL; + else + need_entry = NEED_FPTR; + dynrel_type = R_IA64_FPTR64LSB; + break; + + case R_IA64_LTOFF22: + case R_IA64_LTOFF22X: + case R_IA64_LTOFF64I: + need_entry = NEED_GOT; + break; + + case R_IA64_PLTOFF22: + case R_IA64_PLTOFF64I: + case R_IA64_PLTOFF64MSB: + case R_IA64_PLTOFF64LSB: + need_entry = NEED_PLTOFF; + if (h) + { + if (maybe_dynamic) + need_entry |= NEED_MIN_PLT; + } + else + { + (*info->callbacks->warning) + (info, _("@pltoff reloc against local symbol"), 0, + abfd, 0, 0); + } + break; + + case R_IA64_PCREL21B: + case R_IA64_PCREL60B: + /* Depending on where this symbol is defined, we may or may not + need a full plt entry. Only skip if we know we'll not need + the entry -- static or symbolic, and the symbol definition + has already been seen. */ + if (maybe_dynamic && rel->r_addend == 0) + need_entry = NEED_FULL_PLT; + break; + + case R_IA64_IMM14: + case R_IA64_IMM22: + case R_IA64_IMM64: + case R_IA64_DIR32MSB: + case R_IA64_DIR32LSB: + case R_IA64_DIR64MSB: + case R_IA64_DIR64LSB: + /* Shared objects will always need at least a REL relocation. */ + if (info->shared || maybe_dynamic) + need_entry = NEED_DYNREL; + dynrel_type = R_IA64_DIR64LSB; + break; + + case R_IA64_PCREL22: + case R_IA64_PCREL64I: + case R_IA64_PCREL32MSB: + case R_IA64_PCREL32LSB: + case R_IA64_PCREL64MSB: + case R_IA64_PCREL64LSB: + if (maybe_dynamic) + need_entry = NEED_DYNREL; + dynrel_type = R_IA64_PCREL64LSB; + break; + } + + if (!need_entry) + continue; + + if ((need_entry & NEED_FPTR) != 0 + && rel->r_addend) + { + (*info->callbacks->warning) + (info, _("non-zero addend in @fptr reloc"), 0, + abfd, 0, 0); + } + + dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, true); + + /* Record whether or not this is a local symbol. */ + dyn_i->h = h; + + /* Create what's needed. */ + if (need_entry & NEED_GOT) + { + if (!got) + { + got = get_got (abfd, info, ia64_info); + if (!got) + return false; + } + dyn_i->want_got = 1; + } + if (need_entry & NEED_FPTR) + { + if (!fptr) + { + fptr = get_fptr (abfd, info, ia64_info); + if (!fptr) + return false; + } + + /* FPTRs for shared libraries are allocated by the dynamic + linker. Make sure this local symbol will appear in the + dynamic symbol table. */ + if (!h && info->shared) + { + if (! (_bfd_elfNN_link_record_local_dynamic_symbol + (info, abfd, r_symndx))) + return false; + } + + dyn_i->want_fptr = 1; + } + if (need_entry & NEED_LTOFF_FPTR) + dyn_i->want_ltoff_fptr = 1; + if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT)) + { + if (!ia64_info->root.dynobj) + ia64_info->root.dynobj = abfd; + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + dyn_i->want_plt = 1; + } + if (need_entry & NEED_FULL_PLT) + dyn_i->want_plt2 = 1; + if (need_entry & NEED_PLTOFF) + dyn_i->want_pltoff = 1; + if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC)) + { + if (!srel) + { + srel = get_reloc_section (abfd, ia64_info, sec, true); + if (!srel) + return false; + } + if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type)) + return false; + } + } + + return true; +} + +struct elfNN_ia64_allocate_data +{ + struct bfd_link_info *info; + bfd_size_type ofs; +}; + +/* For cleanliness, and potentially faster dynamic loading, allocate + external GOT entries first. */ + +static boolean +allocate_global_data_got (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_got + && ! dyn_i->want_fptr + && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info)) + { + dyn_i->got_offset = x->ofs; + x->ofs += 8; + } + return true; +} + +/* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */ + +static boolean +allocate_global_fptr_got (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_got + && dyn_i->want_fptr + && elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info)) + { + dyn_i->got_offset = x->ofs; + x->ofs += 8; + } + return true; +} + +/* Lastly, allocate all the GOT entries for local data. */ + +static boolean +allocate_local_got (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_got + && ! elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info)) + { + dyn_i->got_offset = x->ofs; + x->ofs += 8; + } + return true; +} + +/* Search for the index of a global symbol in it's defining object file. */ + +static unsigned long +global_sym_index (h) + struct elf_link_hash_entry *h; +{ + struct elf_link_hash_entry **p; + bfd *obj; + + BFD_ASSERT (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak); + + obj = h->root.u.def.section->owner; + for (p = elf_sym_hashes (obj); *p != h; ++p) + continue; + + return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info; +} + +/* Allocate function descriptors. We can do these for every function + in a main executable that is not exported. */ + +static boolean +allocate_fptr (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_fptr) + { + struct elf_link_hash_entry *h = dyn_i->h; + + if (h) + 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 (x->info->shared) + { + if (h && h->dynindx == -1) + { + BFD_ASSERT ((h->root.type == bfd_link_hash_defined) + || (h->root.type == bfd_link_hash_defweak)); + + if (!_bfd_elfNN_link_record_local_dynamic_symbol + (x->info, h->root.u.def.section->owner, + global_sym_index (h))) + return false; + } + + dyn_i->want_fptr = 0; + } + else if (h == NULL || h->dynindx == -1) + { + dyn_i->fptr_offset = x->ofs; + x->ofs += 16; + } + else + dyn_i->want_fptr = 0; + } + return true; +} + +/* Allocate all the minimal PLT entries. */ + +static boolean +allocate_plt_entries (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_plt) + { + struct elf_link_hash_entry *h = dyn_i->h; + + if (h) + 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; + + /* ??? Versioned symbols seem to lose ELF_LINK_HASH_NEEDS_PLT. */ + if (elfNN_ia64_dynamic_symbol_p (h, x->info)) + { + bfd_size_type offset = x->ofs; + if (offset == 0) + offset = PLT_HEADER_SIZE; + dyn_i->plt_offset = offset; + x->ofs = offset + PLT_MIN_ENTRY_SIZE; + + dyn_i->want_pltoff = 1; + } + else + { + dyn_i->want_plt = 0; + dyn_i->want_plt2 = 0; + } + } + return true; +} + +/* Allocate all the full PLT entries. */ + +static boolean +allocate_plt2_entries (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_plt2) + { + struct elf_link_hash_entry *h = dyn_i->h; + bfd_size_type ofs = x->ofs; + + dyn_i->plt2_offset = ofs; + x->ofs = ofs + PLT_FULL_ENTRY_SIZE; + + 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; + dyn_i->h->plt.offset = ofs; + } + return true; +} + +/* Allocate all the PLTOFF entries requested by relocations and + plt entries. We can't share space with allocated FPTR entries, + because the latter are not necessarily addressable by the GP. + ??? Relaxation might be able to determine that they are. */ + +static boolean +allocate_pltoff_entries (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + + if (dyn_i->want_pltoff) + { + dyn_i->pltoff_offset = x->ofs; + x->ofs += 16; + } + return true; +} + +/* Allocate dynamic relocations for those symbols that turned out + to be dynamic. */ + +static boolean +allocate_dynrel_entries (dyn_i, data) + struct elfNN_ia64_dyn_sym_info *dyn_i; + PTR data; +{ + struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data; + struct elfNN_ia64_link_hash_table *ia64_info; + struct elfNN_ia64_dyn_reloc_entry *rent; + boolean dynamic_symbol, shared; + + ia64_info = elfNN_ia64_hash_table (x->info); + dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info); + shared = x->info->shared; + + /* Take care of the normal data relocations. */ + + for (rent = dyn_i->reloc_entries; rent; rent = rent->next) + { + switch (rent->type) + { + case R_IA64_FPTR64LSB: + /* Allocate one iff !want_fptr, which by this point will + be true only if we're actually allocating one statically + in the main executable. */ + if (dyn_i->want_fptr) + continue; + break; + case R_IA64_PCREL64LSB: + if (!dynamic_symbol) + continue; + break; + case R_IA64_DIR64LSB: + if (!dynamic_symbol && !shared) + continue; + break; + } + rent->srel->_raw_size += sizeof (ElfNN_External_Rela) * rent->count; + } + + /* Take care of the GOT and PLT relocations. */ + + if (((dynamic_symbol || shared) && dyn_i->want_got) + || (dyn_i->want_ltoff_fptr && dyn_i->h && dyn_i->h->dynindx != -1)) + ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela); + + if (dyn_i->want_pltoff) + { + bfd_size_type t = 0; + + /* Dynamic symbols get one IPLT relocation. Local symbols in + shared libraries get two REL relocations. Local symbols in + main applications get nothing. */ + if (dynamic_symbol) + t = sizeof (ElfNN_External_Rela); + else if (shared) + t = 2 * sizeof (ElfNN_External_Rela); + + ia64_info->rel_pltoff_sec->_raw_size += t; + } + + return true; +} + +static boolean +elfNN_ia64_adjust_dynamic_symbol (info, h) + struct bfd_link_info *info; + struct elf_link_hash_entry *h; +{ + /* ??? Undefined symbols with PLT entries should be re-defined + to be the PLT entry. */ + + /* 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; + } + + /* If this is a reference to a symbol defined by a dynamic object which + is not a function, we might allocate the symbol in our .dynbss section + and allocate a COPY dynamic relocation. + + But IA-64 code is canonically PIC, so as a rule we can avoid this sort + of hackery. */ + + return true; +} + +static boolean +elfNN_ia64_size_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + struct elfNN_ia64_allocate_data data; + struct elfNN_ia64_link_hash_table *ia64_info; + asection *sec; + bfd *dynobj; + boolean reltext = false; + boolean relplt = false; + + dynobj = elf_hash_table(info)->dynobj; + ia64_info = elfNN_ia64_hash_table (info); + BFD_ASSERT(dynobj != NULL); + data.info = info; + + /* Set the contents of the .interp section to the interpreter. */ + if (ia64_info->root.dynamic_sections_created + && !info->shared) + { + sec = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (sec != NULL); + sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; + sec->_raw_size = strlen (ELF_DYNAMIC_INTERPRETER) + 1; + } + + /* DT_INIT and DT_FINI get function descriptors not raw code addresses. + Force their symbols to have pltoff entries so we can use those. */ + if (ia64_info->root.dynamic_sections_created) + { + struct elf_link_hash_entry *h; + struct elfNN_ia64_dyn_sym_info *dyn_i; + + if (info->init_function + && (h = elf_link_hash_lookup (elf_hash_table (info), + info->init_function, false, + false, false)) + && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_DEF_REGULAR)) != 0) + { + dyn_i = get_dyn_sym_info (ia64_info, h, output_bfd, NULL, true); + dyn_i->want_pltoff = 1; + } + + if (info->fini_function + && (h = elf_link_hash_lookup (elf_hash_table (info), + info->fini_function, false, + false, false)) + && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_DEF_REGULAR)) != 0) + { + dyn_i = get_dyn_sym_info (ia64_info, h, output_bfd, NULL, true); + dyn_i->want_pltoff = 1; + } + } + + /* Allocate the GOT entries. */ + + if (ia64_info->got_sec) + { + data.ofs = 0; + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data); + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data); + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data); + ia64_info->got_sec->_raw_size = data.ofs; + } + + /* Allocate the FPTR entries. */ + + if (ia64_info->fptr_sec) + { + data.ofs = 0; + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data); + ia64_info->fptr_sec->_raw_size = data.ofs; + } + + /* Now that we've seen all of the input files, we can decide which + symbols need plt entries. Allocate the minimal PLT entries first. + We do this even though dynamic_sections_created may be false, because + this has the side-effect of clearing want_plt and want_plt2. */ + + data.ofs = 0; + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data); + + ia64_info->minplt_entries = 0; + if (data.ofs) + { + ia64_info->minplt_entries + = (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; + } + + /* Align the pointer for the plt2 entries. */ + data.ofs = (data.ofs + 31) & -32; + + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data); + if (data.ofs != 0) + { + BFD_ASSERT (ia64_info->root.dynamic_sections_created); + + ia64_info->plt_sec->_raw_size = data.ofs; + + /* If we've got a .plt, we need some extra memory for the dynamic + linker. We stuff these in .got.plt. */ + sec = bfd_get_section_by_name (dynobj, ".got.plt"); + sec->_raw_size = 8 * PLT_RESERVED_WORDS; + } + + /* Allocate the PLTOFF entries. */ + + if (ia64_info->pltoff_sec) + { + data.ofs = 0; + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data); + ia64_info->pltoff_sec->_raw_size = data.ofs; + } + + if (ia64_info->root.dynamic_sections_created) + { + /* Allocate space for the dynamic relocations that turned out to be + required. */ + + elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data); + } + + /* We have now determined the sizes of the various dynamic sections. + Allocate memory for them. */ + for (sec = dynobj->sections; sec != NULL; sec = sec->next) + { + boolean strip; + + if (!(sec->flags & SEC_LINKER_CREATED)) + continue; + + /* If we don't need this section, strip it from the output file. + There were several sections primarily related to dynamic + linking that must be create before the linker maps input + sections to output sections. The linker does that before + bfd_elf_size_dynamic_sections is called, and it is that + function which decides whether anything needs to go into + these sections. */ + + strip = (sec->_raw_size == 0); + + if (sec == ia64_info->got_sec) + strip = false; + else if (sec == ia64_info->rel_got_sec) + { + if (strip) + ia64_info->rel_got_sec = NULL; + else + /* We use the reloc_count field as a counter if we need to + copy relocs into the output file. */ + sec->reloc_count = 0; + } + else if (sec == ia64_info->fptr_sec) + { + if (strip) + ia64_info->fptr_sec = NULL; + } + else if (sec == ia64_info->plt_sec) + { + if (strip) + ia64_info->plt_sec = NULL; + } + else if (sec == ia64_info->pltoff_sec) + { + if (strip) + ia64_info->pltoff_sec = NULL; + } + else if (sec == ia64_info->rel_pltoff_sec) + { + if (strip) + ia64_info->rel_pltoff_sec = NULL; + else + { + relplt = true; + /* We use the reloc_count field as a counter if we need to + copy relocs into the output file. */ + sec->reloc_count = 0; + } + } + else + { + const char *name; + + /* 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, sec); + + if (strcmp (name, ".got.plt") == 0) + strip = false; + else if (strncmp (name, ".rel", 4) == 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, + sec->output_section); + if (outname[4] == 'a') + outname += 5; + else + outname += 4; + + target = bfd_get_section_by_name (output_bfd, outname); + if (target != NULL + && (target->flags & SEC_READONLY) != 0 + && (target->flags & SEC_ALLOC) != 0) + reltext = true; + + /* We use the reloc_count field as a counter if we need to + copy relocs into the output file. */ + sec->reloc_count = 0; + } + } + else + continue; + } + + if (strip) + _bfd_strip_section_from_output (info, sec); + else + { + /* Allocate memory for the section contents. */ + sec->contents = (bfd_byte *) bfd_zalloc(dynobj, sec->_raw_size); + if (sec->contents == NULL && sec->_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 finish_dynamic_sections) but we must add the entries now + so that we get the correct size for the .dynamic section. */ + + if (!info->shared) + { + /* The DT_DEBUG entry is filled in by the dynamic linker and used + by the debugger. */ + if (!bfd_elfNN_add_dynamic_entry (info, DT_DEBUG, 0)) + return false; + } + + if (! bfd_elfNN_add_dynamic_entry (info, DT_IA_64_PLT_RESERVE, 0)) + return false; + if (! bfd_elfNN_add_dynamic_entry (info, DT_PLTGOT, 0)) + return false; + + if (relplt) + { + if (! bfd_elfNN_add_dynamic_entry (info, DT_PLTRELSZ, 0) + || ! bfd_elfNN_add_dynamic_entry (info, DT_PLTREL, DT_RELA) + || ! bfd_elfNN_add_dynamic_entry (info, DT_JMPREL, 0)) + return false; + } + + if (! bfd_elfNN_add_dynamic_entry (info, DT_RELA, 0) + || ! bfd_elfNN_add_dynamic_entry (info, DT_RELASZ, 0) + || ! bfd_elfNN_add_dynamic_entry (info, DT_RELAENT, + sizeof(ElfNN_External_Rela))) + return false; + + if (reltext) + { + if (! bfd_elfNN_add_dynamic_entry (info, DT_TEXTREL, 0)) + return false; + info->flags |= DF_TEXTREL; + } + } + + /* ??? Perhaps force __gp local. */ + + return true; +} + +static bfd_reloc_status_type +elfNN_ia64_install_value (abfd, hit_addr, val, r_type) + bfd *abfd; + bfd_byte *hit_addr; + bfd_vma val; + unsigned int r_type; +{ + const struct ia64_operand *op; + int bigendian = 0, shift = 0; + bfd_vma t0, t1, insn, dword; + enum ia64_opnd opnd; + const char *err; + size_t size = 8; + + opnd = IA64_OPND_NIL; + switch (r_type) + { + case R_IA64_NONE: + case R_IA64_LDXMOV: + return bfd_reloc_ok; + + /* Instruction relocations. */ + + case R_IA64_IMM14: opnd = IA64_OPND_IMM14; break; + + case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break; + case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break; + case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break; + case R_IA64_PCREL21B: + case R_IA64_PCREL21BI: + opnd = IA64_OPND_TGT25c; + break; + + case R_IA64_IMM22: + case R_IA64_GPREL22: + case R_IA64_LTOFF22: + case R_IA64_LTOFF22X: + case R_IA64_PLTOFF22: + case R_IA64_PCREL22: + case R_IA64_LTOFF_FPTR22: + opnd = IA64_OPND_IMM22; + break; + + case R_IA64_IMM64: + case R_IA64_GPREL64I: + case R_IA64_LTOFF64I: + case R_IA64_PLTOFF64I: + case R_IA64_PCREL64I: + case R_IA64_FPTR64I: + case R_IA64_LTOFF_FPTR64I: + opnd = IA64_OPND_IMMU64; + break; + + /* Data relocations. */ + + case R_IA64_DIR32MSB: + case R_IA64_GPREL32MSB: + case R_IA64_FPTR32MSB: + case R_IA64_PCREL32MSB: + case R_IA64_SEGREL32MSB: + case R_IA64_SECREL32MSB: + case R_IA64_LTV32MSB: + size = 4; bigendian = 1; + break; + + case R_IA64_DIR32LSB: + case R_IA64_GPREL32LSB: + case R_IA64_FPTR32LSB: + case R_IA64_PCREL32LSB: + case R_IA64_SEGREL32LSB: + case R_IA64_SECREL32LSB: + case R_IA64_LTV32LSB: + size = 4; bigendian = 0; + break; + + case R_IA64_DIR64MSB: + case R_IA64_GPREL64MSB: + case R_IA64_PLTOFF64MSB: + case R_IA64_FPTR64MSB: + case R_IA64_PCREL64MSB: + case R_IA64_LTOFF_FPTR64MSB: + case R_IA64_SEGREL64MSB: + case R_IA64_SECREL64MSB: + case R_IA64_LTV64MSB: + size = 8; bigendian = 1; + break; + + case R_IA64_DIR64LSB: + case R_IA64_GPREL64LSB: + case R_IA64_PLTOFF64LSB: + case R_IA64_FPTR64LSB: + case R_IA64_PCREL64LSB: + case R_IA64_LTOFF_FPTR64LSB: + case R_IA64_SEGREL64LSB: + case R_IA64_SECREL64LSB: + case R_IA64_LTV64LSB: + size = 8; bigendian = 0; + break; + + /* Unsupported / Dynamic relocations. */ + + case R_IA64_REL32MSB: + case R_IA64_REL32LSB: + case R_IA64_REL64MSB: + case R_IA64_REL64LSB: + + case R_IA64_IPLTMSB: + case R_IA64_IPLTLSB: + case R_IA64_EPLTMSB: + case R_IA64_EPLTLSB: + case R_IA64_COPY: + + case R_IA64_SEGBASE: + + case R_IA64_TPREL22: + case R_IA64_TPREL64MSB: + case R_IA64_TPREL64LSB: + case R_IA64_LTOFF_TP22: + + default: + return bfd_reloc_notsupported; + } + + switch (opnd) + { + case IA64_OPND_IMMU64: + hit_addr -= (long) hit_addr & 0x3; + t0 = bfd_get_64 (abfd, hit_addr); + t1 = bfd_get_64 (abfd, hit_addr + 8); + + /* tmpl/s: bits 0.. 5 in t0 + slot 0: bits 5..45 in t0 + slot 1: bits 46..63 in t0, bits 0..22 in t1 + slot 2: bits 23..63 in t1 */ + + /* First, clear the bits that form the 64 bit constant. */ + t0 &= ~(0x3ffffLL << 46); + t1 &= ~(0x7fffffLL + | (( (0x07fLL << 13) | (0x1ffLL << 27) + | (0x01fLL << 22) | (0x001LL << 21) + | (0x001LL << 36)) << 23)); + + t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */ + t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */ + t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */ + | (((val >> 7) & 0x1ff) << 27) /* imm9d */ + | (((val >> 16) & 0x01f) << 22) /* imm5c */ + | (((val >> 21) & 0x001) << 21) /* ic */ + | (((val >> 63) & 0x001) << 36)) << 23; /* i */ + + bfd_put_64 (abfd, t0, hit_addr); + bfd_put_64 (abfd, t1, hit_addr + 8); + break; + + case IA64_OPND_TGT64: + hit_addr -= (long) hit_addr & 0x3; + t0 = bfd_get_64 (abfd, hit_addr); + t1 = bfd_get_64 (abfd, hit_addr + 8); + + /* tmpl/s: bits 0.. 5 in t0 + slot 0: bits 5..45 in t0 + slot 1: bits 46..63 in t0, bits 0..22 in t1 + slot 2: bits 23..63 in t1 */ + + /* First, clear the bits that form the 64 bit constant. */ + t0 &= ~(0x3ffffLL << 46); + t1 &= ~(0x7fffffLL + | ((1LL << 36 | 0xfffffLL << 13) << 23)); + + val >>= 4; + t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */ + t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */ + t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */ + | (((val >> 59) & 0x1LL) << 36)) << 23; /* i */ + + bfd_put_64 (abfd, t0, hit_addr); + bfd_put_64 (abfd, t1, hit_addr + 8); + break; + + default: + switch ((long) hit_addr & 0x3) + { + case 0: shift = 5; break; + case 1: shift = 14; hit_addr += 3; break; + case 2: shift = 23; hit_addr += 6; break; + case 3: return bfd_reloc_notsupported; /* shouldn't happen... */ + } + dword = bfd_get_64 (abfd, hit_addr); + insn = (dword >> shift) & 0x1ffffffffffLL; + + op = elf64_ia64_operands + opnd; + err = (*op->insert) (op, val, &insn); + if (err) + return bfd_reloc_overflow; + + dword &= ~(0x1ffffffffffLL << shift); + dword |= (insn << shift); + bfd_put_64 (abfd, dword, hit_addr); + break; + + case IA64_OPND_NIL: + /* A data relocation. */ + if (bigendian) + if (size == 4) + bfd_putb32 (val, hit_addr); + else + bfd_putb64 (val, hit_addr); + else + if (size == 4) + bfd_putl32 (val, hit_addr); + else + bfd_putl64 (val, hit_addr); + break; + } + + return bfd_reloc_ok; +} + +static void +elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type, + dynindx, addend) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + asection *srel; + bfd_vma offset; + unsigned int type; + long dynindx; + bfd_vma addend; +{ + Elf_Internal_Rela outrel; + + outrel.r_offset = (sec->output_section->vma + + sec->output_offset + + offset); + + BFD_ASSERT (dynindx != -1); + outrel.r_info = ELFNN_R_INFO (dynindx, type); + outrel.r_addend = addend; + + if (elf_section_data (sec)->stab_info != NULL) + { + /* This may be NULL for linker-generated relocations, as it is + inconvenient to pass all the bits around. And this shouldn't + happen. */ + BFD_ASSERT (info != NULL); + + offset = (_bfd_stab_section_offset + (abfd, &elf_hash_table (info)->stab_info, sec, + &elf_section_data (sec)->stab_info, offset)); + if (offset == (bfd_vma) -1) + { + /* Run for the hills. We shouldn't be outputting a relocation + for this. So do what everyone else does and output a no-op. */ + outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE); + outrel.r_addend = 0; + offset = 0; + } + outrel.r_offset = offset; + } + + bfd_elfNN_swap_reloca_out (abfd, &outrel, + ((ElfNN_External_Rela *) srel->contents + + srel->reloc_count++)); + BFD_ASSERT (sizeof(ElfNN_External_Rela) * srel->reloc_count + <= srel->_cooked_size); +} + +/* Store an entry for target address TARGET_ADDR in the linkage table + and return the gp-relative address of the linkage table entry. */ + +static bfd_vma +set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type) + bfd *abfd; + struct bfd_link_info *info; + struct elfNN_ia64_dyn_sym_info *dyn_i; + long dynindx; + bfd_vma addend; + bfd_vma value; + unsigned int dyn_r_type; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + asection *got_sec; + + ia64_info = elfNN_ia64_hash_table (info); + got_sec = ia64_info->got_sec; + + BFD_ASSERT ((dyn_i->got_offset & 7) == 0); + + if (! dyn_i->got_done) + { + dyn_i->got_done = true; + + /* Store the target address in the linkage table entry. */ + bfd_put_64 (abfd, value, got_sec->contents + dyn_i->got_offset); + + /* Install a dynamic relocation if needed. */ + if (info->shared + || elfNN_ia64_dynamic_symbol_p (dyn_i->h, info) + || (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB)) + { + if (dynindx == -1) + { + dyn_r_type = R_IA64_REL64LSB; + dynindx = 0; + addend = value; + } + + if (bfd_big_endian (abfd)) + { + switch (dyn_r_type) + { + case R_IA64_REL64LSB: + dyn_r_type = R_IA64_REL64MSB; + break; + case R_IA64_DIR64LSB: + dyn_r_type = R_IA64_DIR64MSB; + break; + case R_IA64_FPTR64LSB: + dyn_r_type = R_IA64_FPTR64MSB; + break; + default: + BFD_ASSERT (false); + break; + } + } + + elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec, + ia64_info->rel_got_sec, + dyn_i->got_offset, dyn_r_type, + dynindx, addend); + } + } + + /* Return the address of the linkage table entry. */ + value = (got_sec->output_section->vma + + got_sec->output_offset + + dyn_i->got_offset); + + return value; +} + +/* Fill in a function descriptor consisting of the function's code + address and its global pointer. Return the descriptor's address. */ + +static bfd_vma +set_fptr_entry (abfd, info, dyn_i, value) + bfd *abfd; + struct bfd_link_info *info; + struct elfNN_ia64_dyn_sym_info *dyn_i; + bfd_vma value; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + asection *fptr_sec; + + ia64_info = elfNN_ia64_hash_table (info); + fptr_sec = ia64_info->fptr_sec; + + if (!dyn_i->fptr_done) + { + dyn_i->fptr_done = 1; + + /* Fill in the function descriptor. */ + bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset); + bfd_put_64 (abfd, _bfd_get_gp_value (abfd), + fptr_sec->contents + dyn_i->fptr_offset + 8); + } + + /* Return the descriptor's address. */ + value = (fptr_sec->output_section->vma + + fptr_sec->output_offset + + dyn_i->fptr_offset); + + return value; +} + +/* Fill in a PLTOFF entry consisting of the function's code address + and its global pointer. Return the descriptor's address. */ + +static bfd_vma +set_pltoff_entry (abfd, info, dyn_i, value, is_plt) + bfd *abfd; + struct bfd_link_info *info; + struct elfNN_ia64_dyn_sym_info *dyn_i; + bfd_vma value; + boolean is_plt; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + asection *pltoff_sec; + + ia64_info = elfNN_ia64_hash_table (info); + pltoff_sec = ia64_info->pltoff_sec; + + /* Don't do anything if this symbol uses a real PLT entry. In + that case, we'll fill this in during finish_dynamic_symbol. */ + if ((! dyn_i->want_plt || is_plt) + && !dyn_i->pltoff_done) + { + /* Fill in the function descriptor. */ + bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset); + bfd_put_64 (abfd, _bfd_get_gp_value (abfd), + pltoff_sec->contents + dyn_i->pltoff_offset + 8); + + /* Install dynamic relocations if needed. */ + if (!is_plt && info->shared) + { + unsigned int dyn_r_type; + + if (bfd_big_endian (abfd)) + dyn_r_type = R_IA64_REL64MSB; + else + dyn_r_type = R_IA64_REL64LSB; + + elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, + ia64_info->rel_pltoff_sec, + dyn_i->pltoff_offset, + dyn_r_type, 0, 0); + elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec, + ia64_info->rel_pltoff_sec, + dyn_i->pltoff_offset + 8, + dyn_r_type, 0, 0); + } + + dyn_i->pltoff_done = 1; + } + + /* Return the descriptor's address. */ + value = (pltoff_sec->output_section->vma + + pltoff_sec->output_offset + + dyn_i->pltoff_offset); + + return value; +} + +/* Called through qsort to sort the .IA_64.unwind section during a + non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd + to the output bfd so we can do proper endianness frobbing. */ + +static bfd *elfNN_ia64_unwind_entry_compare_bfd; + +static int +elfNN_ia64_unwind_entry_compare (a, b) + PTR a; + PTR b; +{ + bfd_vma av, bv; + + av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a); + bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b); + + return (av < bv ? -1 : av > bv ? 1 : 0); +} + +static boolean +elfNN_ia64_final_link (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + ia64_info = elfNN_ia64_hash_table (info); + + /* Make sure we've got ourselves a nice fat __gp value. */ + if (!info->relocateable) + { + bfd_vma min_vma = (bfd_vma) -1, max_vma = 0; + bfd_vma min_short_vma = min_vma, max_short_vma = 0; + struct elf_link_hash_entry *gp; + bfd_vma gp_val; + asection *os; + + /* Find the min and max vma of all sections marked short. Also + collect min and max vma of any type, for use in selecting a + nice gp. */ + for (os = abfd->sections; os ; os = os->next) + { + bfd_vma lo, hi; + + if ((os->flags & SEC_ALLOC) == 0) + continue; + + lo = os->vma; + hi = os->vma + os->_raw_size; + if (hi < lo) + hi = (bfd_vma) -1; + + if (min_vma > lo) + min_vma = lo; + if (max_vma < hi) + max_vma = hi; + if (os->flags & SEC_SMALL_DATA) + { + if (min_short_vma > lo) + min_short_vma = lo; + if (max_short_vma < hi) + max_short_vma = hi; + } + } + + /* See if the user wants to force a value. */ + gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", false, + false, false); + + if (gp + && (gp->root.type == bfd_link_hash_defined + || gp->root.type == bfd_link_hash_defweak)) + { + asection *gp_sec = gp->root.u.def.section; + gp_val = (gp->root.u.def.value + + gp_sec->output_section->vma + + gp_sec->output_offset); + } + else + { + /* Pick a sensible value. */ + + asection *got_sec = ia64_info->got_sec; + + /* Start with just the address of the .got. */ + if (got_sec) + gp_val = got_sec->output_section->vma; + else if (max_short_vma != 0) + gp_val = min_short_vma; + else + gp_val = min_vma; + + /* If it is possible to address the entire image, but we + don't with the choice above, adjust. */ + if (max_vma - min_vma < 0x400000 + && max_vma - gp_val <= 0x200000 + && gp_val - min_vma > 0x200000) + gp_val = min_vma + 0x200000; + else if (max_short_vma != 0) + { + /* If we don't cover all the short data, adjust. */ + if (max_short_vma - gp_val >= 0x200000) + gp_val = min_short_vma + 0x200000; + + /* If we're addressing stuff past the end, adjust back. */ + if (gp_val > max_vma) + gp_val = max_vma - 0x200000 + 8; + } + } + + /* Validate whether all SHF_IA_64_SHORT sections are within + range of the chosen GP. */ + + if (max_short_vma != 0) + { + if (max_short_vma - min_short_vma >= 0x400000) + { + (*_bfd_error_handler) + (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), + bfd_get_filename (abfd), + (unsigned long)(max_short_vma - min_short_vma)); + return false; + } + else if ((gp_val > min_short_vma + && gp_val - min_short_vma > 0x200000) + || (gp_val < max_short_vma + && max_short_vma - gp_val >= 0x200000)) + { + (*_bfd_error_handler) + (_("%s: __gp does not cover short data segment"), + bfd_get_filename (abfd)); + return false; + } + } + + _bfd_set_gp_value (abfd, gp_val); + } + + /* Tricky bits. DT_INIT and DT_FINI use a pltoff entry, which is + normally initialized in finish_dynamic_sections. Except that + we need all non-plt pltoff entries to be initialized before + finish_dynamic_symbols. This because the array of relocations + used for plt entries (aka DT_JMPREL) begins after all the + non-plt pltoff relocations. If the order gets confused, we + munge either the array or the array base. */ + if (ia64_info->root.dynamic_sections_created) + { + struct elf_link_hash_entry *h; + struct elfNN_ia64_dyn_sym_info *dyn_i; + bfd_vma addr; + + if (info->init_function + && (h = elf_link_hash_lookup (elf_hash_table (info), + info->init_function, false, + false, false)) + && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_DEF_REGULAR)) != 0) + { + dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false); + addr = (h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset + + h->root.u.def.value); + (void) set_pltoff_entry (abfd, info, dyn_i, addr, false); + } + + if (info->fini_function + && (h = elf_link_hash_lookup (elf_hash_table (info), + info->fini_function, false, + false, false)) + && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_DEF_REGULAR)) != 0) + { + dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false); + addr = (h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset + + h->root.u.def.value); + (void) set_pltoff_entry (abfd, info, dyn_i, addr, false); + } + } + + /* Invoke the regular ELF backend linker to do all the work. */ + if (!bfd_elfNN_bfd_final_link (abfd, info)) + return false; + + /* If we're producing a final executable, we need to sort the contents + of the .IA_64.unwind section. */ + if (!info->relocateable) + { + asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind); + if (s) + { + bfd_size_type size = s->output_section->_raw_size; + char *contents = bfd_malloc (size); + + if (contents == NULL) + return false; + if (! bfd_get_section_contents (abfd, s->output_section, + contents, (file_ptr) 0, size)) + return false; + + elfNN_ia64_unwind_entry_compare_bfd = abfd; + qsort (contents, size / 24, 24, elfNN_ia64_unwind_entry_compare); + + if (! bfd_set_section_contents (abfd, s->output_section, + contents, (file_ptr) 0, size)) + return false; + } + } + + return true; +} + +static boolean +elfNN_ia64_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; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + asection *srel; + boolean ret_val = true; /* for non-fatal errors */ + bfd_vma gp_val; + + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + ia64_info = elfNN_ia64_hash_table (info); + + /* Infect various flags from the input section to the output section. */ + if (info->relocateable) + { + bfd_vma flags; + + flags = elf_section_data(input_section)->this_hdr.sh_flags; + flags &= SHF_IA_64_NORECOV; + + elf_section_data(input_section->output_section) + ->this_hdr.sh_flags |= flags; + } + + gp_val = _bfd_get_gp_value (output_bfd); + srel = get_reloc_section (input_bfd, ia64_info, input_section, false); + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; ++rel) + { + struct elf_link_hash_entry *h; + struct elfNN_ia64_dyn_sym_info *dyn_i; + bfd_reloc_status_type r; + reloc_howto_type *howto; + unsigned long r_symndx; + Elf_Internal_Sym *sym; + unsigned int r_type; + bfd_vma value; + asection *sym_sec; + bfd_byte *hit_addr; + boolean dynamic_symbol_p; + boolean undef_weak_ref; + + r_type = ELFNN_R_TYPE (rel->r_info); + if (r_type > R_IA64_MAX_RELOC_CODE) + { + (*_bfd_error_handler) + (_("%s: unknown relocation type %d"), + bfd_get_filename (input_bfd), (int)r_type); + bfd_set_error (bfd_error_bad_value); + ret_val = false; + continue; + } + howto = lookup_howto (r_type); + r_symndx = ELFNN_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. */ + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + sym_sec = local_sections[r_symndx]; + rel->r_addend += sym_sec->output_offset; + } + } + continue; + } + + /* This is a final link. */ + + h = NULL; + sym = NULL; + sym_sec = NULL; + undef_weak_ref = false; + + if (r_symndx < symtab_hdr->sh_info) + { + /* Reloc against local symbol. */ + sym = local_syms + r_symndx; + sym_sec = local_sections[r_symndx]; + value = (sym_sec->output_section->vma + + sym_sec->output_offset + + sym->st_value); + } + else + { + long indx; + + /* Reloc against global symbol. */ + indx = r_symndx - symtab_hdr->sh_info; + h = elf_sym_hashes (input_bfd)[indx]; + 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; + + value = 0; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + sym_sec = h->root.u.def.section; + + /* Detect the cases that sym_sec->output_section is + expected to be NULL -- all cases in which the symbol + is defined in another shared module. This includes + PLT relocs for which we've created a PLT entry and + other relocs for which we're prepared to create + dynamic relocations. */ + /* ??? Just accept it NULL and continue. */ + + if (sym_sec->output_section != NULL) + { + value = (h->root.u.def.value + + sym_sec->output_section->vma + + sym_sec->output_offset); + } + } + else if (h->root.type == bfd_link_hash_undefweak) + undef_weak_ref = true; + else if (info->shared && !info->symbolic + && !info->no_undefined + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) + ; + else + { + if (! ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset, + (!info->shared || info->no_undefined + || ELF_ST_VISIBILITY (h->other))))) + return false; + ret_val = false; + continue; + } + } + + hit_addr = contents + rel->r_offset; + value += rel->r_addend; + dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info); + + switch (r_type) + { + case R_IA64_NONE: + case R_IA64_LDXMOV: + continue; + + case R_IA64_IMM14: + case R_IA64_IMM22: + case R_IA64_IMM64: + case R_IA64_DIR32MSB: + case R_IA64_DIR32LSB: + case R_IA64_DIR64MSB: + case R_IA64_DIR64LSB: + /* Install a dynamic relocation for this reloc. */ + if ((dynamic_symbol_p || info->shared) + && (input_section->flags & SEC_ALLOC) != 0) + { + unsigned int dyn_r_type; + long dynindx; + + BFD_ASSERT (srel != NULL); + + /* If we don't need dynamic symbol lookup, find a + matching RELATIVE relocation. */ + dyn_r_type = r_type; + if (dynamic_symbol_p) + dynindx = h->dynindx; + else + { + switch (r_type) + { + case R_IA64_DIR32MSB: + dyn_r_type = R_IA64_REL32MSB; + break; + case R_IA64_DIR32LSB: + dyn_r_type = R_IA64_REL32LSB; + break; + case R_IA64_DIR64MSB: + dyn_r_type = R_IA64_REL64MSB; + break; + case R_IA64_DIR64LSB: + dyn_r_type = R_IA64_REL64LSB; + break; + + default: + /* We can't represent this without a dynamic symbol. + Adjust the relocation to be against an output + section symbol, which are always present in the + dynamic symbol table. */ + /* ??? People shouldn't be doing non-pic code in + shared libraries. Hork. */ + (*_bfd_error_handler) + (_("%s: linking non-pic code in a shared library"), + bfd_get_filename (input_bfd)); + ret_val = false; + continue; + } + dynindx = 0; + } + + elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, + srel, rel->r_offset, dyn_r_type, + dynindx, rel->r_addend); + } + /* FALLTHRU */ + + case R_IA64_LTV32MSB: + case R_IA64_LTV32LSB: + case R_IA64_LTV64MSB: + case R_IA64_LTV64LSB: + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_GPREL22: + case R_IA64_GPREL64I: + case R_IA64_GPREL32MSB: + case R_IA64_GPREL32LSB: + case R_IA64_GPREL64MSB: + case R_IA64_GPREL64LSB: + if (dynamic_symbol_p) + { + (*_bfd_error_handler) + (_("%s: @gprel relocation against dynamic symbol %s"), + bfd_get_filename (input_bfd), h->root.root.string); + ret_val = false; + continue; + } + value -= gp_val; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_LTOFF22: + case R_IA64_LTOFF22X: + case R_IA64_LTOFF64I: + dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false); + value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1), + rel->r_addend, value, R_IA64_DIR64LSB); + value -= gp_val; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_PLTOFF22: + case R_IA64_PLTOFF64I: + case R_IA64_PLTOFF64MSB: + case R_IA64_PLTOFF64LSB: + dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false); + value = set_pltoff_entry (output_bfd, info, dyn_i, value, false); + value -= gp_val; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_FPTR64I: + case R_IA64_FPTR32MSB: + case R_IA64_FPTR32LSB: + case R_IA64_FPTR64MSB: + case R_IA64_FPTR64LSB: + dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false); + if (dyn_i->want_fptr) + { + if (!undef_weak_ref) + value = set_fptr_entry (output_bfd, info, dyn_i, value); + } + else + { + long dynindx; + + /* Otherwise, we expect the dynamic linker to create + the entry. */ + + if (h) + { + if (h->dynindx != -1) + dynindx = h->dynindx; + else + dynindx = (_bfd_elf_link_lookup_local_dynindx + (info, h->root.u.def.section->owner, + global_sym_index (h))); + } + else + { + dynindx = (_bfd_elf_link_lookup_local_dynindx + (info, input_bfd, r_symndx)); + } + + elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, + srel, rel->r_offset, r_type, + dynindx, rel->r_addend); + value = 0; + } + + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_LTOFF_FPTR22: + case R_IA64_LTOFF_FPTR64I: + case R_IA64_LTOFF_FPTR64MSB: + case R_IA64_LTOFF_FPTR64LSB: + { + long dynindx; + + dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false); + if (dyn_i->want_fptr) + { + BFD_ASSERT (h == NULL || h->dynindx == -1) + if (!undef_weak_ref) + value = set_fptr_entry (output_bfd, info, dyn_i, value); + dynindx = -1; + } + else + { + /* Otherwise, we expect the dynamic linker to create + the entry. */ + if (h) + { + if (h->dynindx != -1) + dynindx = h->dynindx; + else + dynindx = (_bfd_elf_link_lookup_local_dynindx + (info, h->root.u.def.section->owner, + global_sym_index (h))); + } + else + dynindx = (_bfd_elf_link_lookup_local_dynindx + (info, input_bfd, r_symndx)); + value = 0; + } + + value = set_got_entry (output_bfd, info, dyn_i, dynindx, + rel->r_addend, value, R_IA64_FPTR64LSB); + value -= gp_val; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + } + break; + + case R_IA64_PCREL32MSB: + case R_IA64_PCREL32LSB: + case R_IA64_PCREL64MSB: + case R_IA64_PCREL64LSB: + /* Install a dynamic relocation for this reloc. */ + if (dynamic_symbol_p) + { + BFD_ASSERT (srel != NULL); + + elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section, + srel, rel->r_offset, r_type, + h->dynindx, rel->r_addend); + } + goto finish_pcrel; + + case R_IA64_PCREL21BI: + case R_IA64_PCREL21F: + case R_IA64_PCREL21M: + /* ??? These two are only used for speculation fixup code. + They should never be dynamic. */ + if (dynamic_symbol_p) + { + (*_bfd_error_handler) + (_("%s: dynamic relocation against speculation fixup"), + bfd_get_filename (input_bfd)); + ret_val = false; + continue; + } + if (undef_weak_ref) + { + (*_bfd_error_handler) + (_("%s: speculation fixup against undefined weak symbol"), + bfd_get_filename (input_bfd)); + ret_val = false; + continue; + } + goto finish_pcrel; + + case R_IA64_PCREL21B: + case R_IA64_PCREL60B: + /* We should have created a PLT entry for any dynamic symbol. */ + dyn_i = NULL; + if (h) + dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false); + + if (dyn_i && dyn_i->want_plt2) + { + /* Should have caught this earlier. */ + BFD_ASSERT (rel->r_addend == 0); + + value = (ia64_info->plt_sec->output_section->vma + + ia64_info->plt_sec->output_offset + + dyn_i->plt2_offset); + } + else + { + /* Since there's no PLT entry, Validate that this is + locally defined. */ + BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL); + + /* If the symbol is undef_weak, we shouldn't be trying + to call it. There's every chance that we'd wind up + with an out-of-range fixup here. Don't bother setting + any value at all. */ + if (undef_weak_ref) + continue; + } + goto finish_pcrel; + + case R_IA64_PCREL22: + case R_IA64_PCREL64I: + finish_pcrel: + /* Make pc-relative. */ + value -= (input_section->output_section->vma + + input_section->output_offset + + rel->r_offset) & ~ (bfd_vma) 0x3; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_SEGREL32MSB: + case R_IA64_SEGREL32LSB: + case R_IA64_SEGREL64MSB: + case R_IA64_SEGREL64LSB: + { + struct elf_segment_map *m; + Elf_Internal_Phdr *p; + + /* Find the segment that contains the output_section. */ + for (m = elf_tdata (output_bfd)->segment_map, + p = elf_tdata (output_bfd)->phdr; + m != NULL; + m = m->next, p++) + { + int i; + for (i = m->count - 1; i >= 0; i--) + if (m->sections[i] == sym_sec->output_section) + break; + if (i >= 0) + break; + } + + if (m == NULL) + { + /* If the input section was discarded from the output, then + do nothing. */ + + if (bfd_is_abs_section (sym_sec->output_section)) + r = bfd_reloc_ok; + else + r = bfd_reloc_notsupported; + } + else + { + /* The VMA of the segment is the vaddr of the associated + program header. */ + if (value > p->p_vaddr) + value -= p->p_vaddr; + else + value = 0; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, + r_type); + } + break; + } + + case R_IA64_SECREL32MSB: + case R_IA64_SECREL32LSB: + case R_IA64_SECREL64MSB: + case R_IA64_SECREL64LSB: + /* Make output-section relative. */ + if (value > input_section->output_section->vma) + value -= input_section->output_section->vma; + else + value = 0; + r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type); + break; + + case R_IA64_SEGBASE: + + case R_IA64_REL32MSB: + case R_IA64_REL32LSB: + case R_IA64_REL64MSB: + case R_IA64_REL64LSB: + + case R_IA64_IPLTMSB: + case R_IA64_IPLTLSB: + case R_IA64_EPLTMSB: + case R_IA64_EPLTLSB: + case R_IA64_COPY: + + case R_IA64_TPREL22: + case R_IA64_TPREL64MSB: + case R_IA64_TPREL64LSB: + case R_IA64_LTOFF_TP22: + default: + r = bfd_reloc_notsupported; + break; + } + + switch (r) + { + case bfd_reloc_ok: + break; + + case bfd_reloc_undefined: + /* This can happen for global table relative relocs if + __gp is undefined. This is a panic situation so we + don't try to continue. */ + (*info->callbacks->undefined_symbol) + (info, "__gp", input_bfd, input_section, rel->r_offset, 1); + return false; + + case bfd_reloc_notsupported: + { + const char *name; + + if (h) + name = h->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, input_section); + } + if (!(*info->callbacks->warning) (info, _("unsupported reloc"), + name, input_bfd, + input_section, rel->r_offset)) + return false; + ret_val = false; + } + break; + + case bfd_reloc_dangerous: + case bfd_reloc_outofrange: + case bfd_reloc_overflow: + default: + { + const char *name; + + if (h) + name = h->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, input_section); + } + if (!(*info->callbacks->reloc_overflow) (info, name, + howto->name, 0, + input_bfd, + input_section, + rel->r_offset)) + return false; + ret_val = false; + } + break; + } + } + + return ret_val; +} + +static boolean +elfNN_ia64_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; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + struct elfNN_ia64_dyn_sym_info *dyn_i; + + ia64_info = elfNN_ia64_hash_table (info); + dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false); + + /* Fill in the PLT data, if required. */ + if (dyn_i && dyn_i->want_plt) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + asection *plt_sec; + bfd_vma plt_addr, pltoff_addr, gp_val, index; + ElfNN_External_Rela *rel; + + gp_val = _bfd_get_gp_value (output_bfd); + + /* Initialize the minimal PLT entry. */ + + index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE; + plt_sec = ia64_info->plt_sec; + loc = plt_sec->contents + dyn_i->plt_offset; + + memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE); + elfNN_ia64_install_value (output_bfd, loc, index, R_IA64_IMM22); + elfNN_ia64_install_value (output_bfd, loc+2, -dyn_i->plt_offset, + R_IA64_PCREL21B); + + plt_addr = (plt_sec->output_section->vma + + plt_sec->output_offset + + dyn_i->plt_offset); + pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, true); + + /* Initialize the FULL PLT entry, if needed. */ + if (dyn_i->want_plt2) + { + loc = plt_sec->contents + dyn_i->plt2_offset; + + memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE); + elfNN_ia64_install_value (output_bfd, loc, pltoff_addr - gp_val, + R_IA64_IMM22); + + /* Mark the symbol as undefined, rather than as defined in the + plt section. Leave the value alone. */ + /* ??? We didn't redefine it in adjust_dynamic_symbol in the + first place. But perhaps elflink.h did some for us. */ + if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + sym->st_shndx = SHN_UNDEF; + } + + /* Create the dynamic relocation. */ + outrel.r_offset = pltoff_addr; + if (bfd_little_endian (output_bfd)) + outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB); + else + outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB); + outrel.r_addend = 0; + + /* This is fun. In the .IA_64.pltoff section, we've got entries + that correspond both to real PLT entries, and those that + happened to resolve to local symbols but need to be created + to satisfy @pltoff relocations. The .rela.IA_64.pltoff + relocations for the real PLT should come at the end of the + section, so that they can be indexed by plt entry at runtime. + + We emitted all of the relocations for the non-PLT @pltoff + entries during relocate_section. So we can consider the + existing sec->reloc_count to be the base of the array of + PLT relocations. */ + + rel = (ElfNN_External_Rela *)ia64_info->rel_pltoff_sec->contents; + rel += ia64_info->rel_pltoff_sec->reloc_count; + + bfd_elfNN_swap_reloca_out (output_bfd, &outrel, rel + index); + } + + /* 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; +} + +static boolean +elfNN_ia64_finish_dynamic_sections (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + struct elfNN_ia64_link_hash_table *ia64_info; + bfd *dynobj; + + ia64_info = elfNN_ia64_hash_table (info); + dynobj = ia64_info->root.dynobj; + + if (elf_hash_table (info)->dynamic_sections_created) + { + ElfNN_External_Dyn *dyncon, *dynconend; + asection *sdyn, *sgotplt; + bfd_vma gp_val; + + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (sdyn != NULL); + dyncon = (ElfNN_External_Dyn *) sdyn->contents; + dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + + gp_val = _bfd_get_gp_value (abfd); + + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + const char *name; + asection *s; + + bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + case DT_PLTGOT: + dyn.d_un.d_ptr = gp_val; + break; + + case DT_PLTRELSZ: + dyn.d_un.d_val = (ia64_info->minplt_entries + * sizeof (ElfNN_External_Rela)); + break; + + case DT_JMPREL: + /* See the comment above in finish_dynamic_symbol. */ + dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma + + ia64_info->rel_pltoff_sec->output_offset + + (ia64_info->rel_pltoff_sec->reloc_count + * sizeof (ElfNN_External_Rela))); + break; + + case DT_IA_64_PLT_RESERVE: + dyn.d_un.d_ptr = (sgotplt->output_section->vma + + sgotplt->output_offset); + break; + + case DT_RELASZ: + /* Do not have RELASZ include JMPREL. This makes things + easier on ld.so. This is not what the rest of BFD set up. */ + dyn.d_un.d_val -= (ia64_info->minplt_entries + * sizeof (ElfNN_External_Rela)); + break; + + case DT_INIT: + case DT_FINI: + { + struct elf_link_hash_entry *h; + struct elfNN_ia64_dyn_sym_info *dyn_i; + const char *which; + + if (dyn.d_tag == DT_INIT) + which = info->init_function; + else + which = info->fini_function; + + h = elf_link_hash_lookup (elf_hash_table (info), which, + false, false, false); + dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false); + dyn.d_un.d_ptr = set_pltoff_entry (abfd, info, dyn_i, + dyn.d_un.d_ptr, 0); + } + } + + bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon); + } + + /* Initialize the PLT0 entry */ + if (ia64_info->plt_sec) + { + bfd_byte *loc = ia64_info->plt_sec->contents; + bfd_vma pltres; + + memcpy (loc, plt_header, PLT_HEADER_SIZE); + + pltres = (sgotplt->output_section->vma + + sgotplt->output_offset + - gp_val); + + elfNN_ia64_install_value (abfd, loc+1, pltres, R_IA64_GPREL22); + } + } + + return true; +} + +/* ELF file flag handling: */ + +/* Function to keep IA-64 specific file flags. */ +static boolean +elfNN_ia64_set_private_flags (abfd, flags) + bfd *abfd; + flagword flags; +{ + BFD_ASSERT (!elf_flags_init (abfd) + || elf_elfheader (abfd)->e_flags == flags); + + elf_elfheader (abfd)->e_flags = flags; + elf_flags_init (abfd) = true; + return true; +} + +/* Copy backend specific data from one object module to another */ +static boolean +elfNN_ia64_copy_private_bfd_data (ibfd, obfd) + bfd *ibfd, *obfd; +{ + if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return true; + + BFD_ASSERT (!elf_flags_init (obfd) + || (elf_elfheader (obfd)->e_flags + == elf_elfheader (ibfd)->e_flags)); + + elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; + elf_flags_init (obfd) = true; + return true; +} + +/* Merge backend specific data from an object file to the output + object file when linking. */ +static boolean +elfNN_ia64_merge_private_bfd_data (ibfd, obfd) + bfd *ibfd, *obfd; +{ + flagword out_flags; + flagword in_flags; + boolean ok = true; + + /* Don't even pretend to support mixed-format linking. */ + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return false; + + in_flags = elf_elfheader (ibfd)->e_flags; + out_flags = elf_elfheader (obfd)->e_flags; + + if (! elf_flags_init (obfd)) + { + elf_flags_init (obfd) = true; + elf_elfheader (obfd)->e_flags = in_flags; + + if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) + && bfd_get_arch_info (obfd)->the_default) + { + return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), + bfd_get_mach (ibfd)); + } + + return true; + } + + /* Check flag compatibility. */ + if (in_flags == out_flags) + return true; + + /* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */ + if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP)) + elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP; + + if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL)) + { + (*_bfd_error_handler) + (_("%s: linking trap-on-NULL-dereference with non-trapping files"), + bfd_get_filename (ibfd)); + + bfd_set_error (bfd_error_bad_value); + ok = false; + } + if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE)) + { + (*_bfd_error_handler) + (_("%s: linking big-endian files with little-endian files"), + bfd_get_filename (ibfd)); + + bfd_set_error (bfd_error_bad_value); + ok = false; + } + if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64)) + { + (*_bfd_error_handler) + (_("%s: linking 64-bit files with 32-bit files"), + bfd_get_filename (ibfd)); + + bfd_set_error (bfd_error_bad_value); + ok = false; + } + if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP)) + { + (*_bfd_error_handler) + (_("%s: linking constant-gp files with non-constant-gp files"), + bfd_get_filename (ibfd)); + + bfd_set_error (bfd_error_bad_value); + ok = false; + } + if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP) + != (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP)) + { + (*_bfd_error_handler) + (_("%s: linking auto-pic files with non-auto-pic files"), + bfd_get_filename (ibfd)); + + bfd_set_error (bfd_error_bad_value); + ok = false; + } + + return ok; +} + +static boolean +elfNN_ia64_print_private_bfd_data (abfd, ptr) + bfd *abfd; + PTR ptr; +{ + FILE *file = (FILE *) ptr; + flagword flags = elf_elfheader (abfd)->e_flags; + + BFD_ASSERT (abfd != NULL && ptr != NULL); + + fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n", + (flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "", + (flags & EF_IA_64_EXT) ? "EXT, " : "", + (flags & EF_IA_64_BE) ? "BE, " : "LE, ", + (flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "", + (flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "", + (flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "", + (flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "", + (flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32"); + + _bfd_elf_print_private_bfd_data (abfd, ptr); + return true; +} + +#define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec +#define TARGET_LITTLE_NAME "elfNN-ia64-little" +#define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec +#define TARGET_BIG_NAME "elfNN-ia64-big" +#define ELF_ARCH bfd_arch_ia64 +#define ELF_MACHINE_CODE EM_IA_64 +#define ELF_MACHINE_ALT1 1999 /* EAS2.3 */ +#define ELF_MACHINE_ALT2 1998 /* EAS2.2 */ +#define ELF_MAXPAGESIZE 0x10000 /* 64KB */ + +#define elf_backend_section_from_shdr \ + elfNN_ia64_section_from_shdr +#define elf_backend_section_flags \ + elfNN_ia64_section_flags +#define elf_backend_fake_sections \ + elfNN_ia64_fake_sections +#define elf_backend_add_symbol_hook \ + elfNN_ia64_add_symbol_hook +#define elf_backend_additional_program_headers \ + elfNN_ia64_additional_program_headers +#define elf_backend_modify_segment_map \ + elfNN_ia64_modify_segment_map +#define elf_info_to_howto \ + elfNN_ia64_info_to_howto + +#define bfd_elfNN_bfd_reloc_type_lookup \ + elfNN_ia64_reloc_type_lookup +#define bfd_elfNN_bfd_is_local_label_name \ + elfNN_ia64_is_local_label_name +#define bfd_elfNN_bfd_relax_section \ + elfNN_ia64_relax_section + +/* Stuff for the BFD linker: */ +#define bfd_elfNN_bfd_link_hash_table_create \ + elfNN_ia64_hash_table_create +#define elf_backend_create_dynamic_sections \ + elfNN_ia64_create_dynamic_sections +#define elf_backend_check_relocs \ + elfNN_ia64_check_relocs +#define elf_backend_adjust_dynamic_symbol \ + elfNN_ia64_adjust_dynamic_symbol +#define elf_backend_size_dynamic_sections \ + elfNN_ia64_size_dynamic_sections +#define elf_backend_relocate_section \ + elfNN_ia64_relocate_section +#define elf_backend_finish_dynamic_symbol \ + elfNN_ia64_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + elfNN_ia64_finish_dynamic_sections +#define bfd_elfNN_bfd_final_link \ + elfNN_ia64_final_link + +#define bfd_elfNN_bfd_copy_private_bfd_data \ + elfNN_ia64_copy_private_bfd_data +#define bfd_elfNN_bfd_merge_private_bfd_data \ + elfNN_ia64_merge_private_bfd_data +#define bfd_elfNN_bfd_set_private_flags \ + elfNN_ia64_set_private_flags +#define bfd_elfNN_bfd_print_private_bfd_data \ + elfNN_ia64_print_private_bfd_data + +#define elf_backend_plt_readonly 1 +#define elf_backend_want_plt_sym 0 +#define elf_backend_plt_alignment 5 +#define elf_backend_got_header_size 0 +#define elf_backend_plt_header_size PLT_HEADER_SIZE +#define elf_backend_want_got_plt 1 +#define elf_backend_may_use_rel_p 1 +#define elf_backend_may_use_rela_p 1 +#define elf_backend_default_use_rela_p 1 +#define elf_backend_want_dynbss 0 +#define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect +#define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol + +#include "elfNN-target.h" |