--- /dev/null
+/* Generic support for 64-bit ELF
+ Copyright 1999, 2000 Free Software Foundation, Inc.
+
+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 "elf/hppa.h"
+#include "libhppa.h"
+#include "elf64-hppa.h"
+#define ARCH_SIZE 64
+
+#define PLT_ENTRY_SIZE 0x10
+#define DLT_ENTRY_SIZE 0x8
+#define OPD_ENTRY_SIZE 0x20
+
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/pa20_64/dld.sl"
+
+/* The stub is supposed to load the target address and target's DP
+ value out of the PLT, then do an external branch to the target
+ address.
+
+ LDD PLTOFF(%r27),%r1
+ BVE (%r1)
+ LDD PLTOFF+8(%r27),%r27
+
+ Note that we must use the LDD with a 14 bit displacement, not the one
+ with a 5 bit displacement. */
+static char plt_stub[] = {0x53, 0x61, 0x00, 0x00, 0xe8, 0x20, 0xd0, 0x00,
+ 0x53, 0x7b, 0x00, 0x00 };
+
+struct elf64_hppa_dyn_hash_entry
+{
+ struct bfd_hash_entry root;
+
+ /* Offsets for this symbol in various linker sections. */
+ bfd_vma dlt_offset;
+ bfd_vma plt_offset;
+ bfd_vma opd_offset;
+ bfd_vma stub_offset;
+
+ /* The symbol table entry, if any, that this was derrived from. */
+ struct elf_link_hash_entry *h;
+
+ /* The index of the (possibly local) symbol in the input bfd and its
+ associated BFD. Needed so that we can have relocs against local
+ symbols in shared libraries. */
+ unsigned long sym_indx;
+ bfd *owner;
+
+ /* Dynamic symbols may need to have two different values. One for
+ the dynamic symbol table, one for the normal symbol table.
+
+ In such cases we store the symbol's real value and section
+ index here so we can restore the real value before we write
+ the normal symbol table. */
+ bfd_vma st_value;
+ int st_shndx;
+
+ /* Used to count non-got, non-plt relocations for delayed sizing
+ of relocation sections. */
+ struct elf64_hppa_dyn_reloc_entry
+ {
+ /* Next relocation in the chain. */
+ struct elf64_hppa_dyn_reloc_entry *next;
+
+ /* The type of the relocation. */
+ int type;
+
+ /* The input section of the relocation. */
+ asection *sec;
+
+ /* The index of the section symbol for the input section of
+ the relocation. Only needed when building shared libraries. */
+ int sec_symndx;
+
+ /* The offset within the input section of the relocation. */
+ bfd_vma offset;
+
+ /* The addend for the relocation. */
+ bfd_vma addend;
+
+ } *reloc_entries;
+
+ /* Nonzero if this symbol needs an entry in one of the linker
+ sections. */
+ unsigned want_dlt;
+ unsigned want_plt;
+ unsigned want_opd;
+ unsigned want_stub;
+};
+
+struct elf64_hppa_dyn_hash_table
+{
+ struct bfd_hash_table root;
+};
+
+struct elf64_hppa_link_hash_table
+{
+ struct elf_link_hash_table root;
+
+ /* Shortcuts to get to the various linker defined sections. */
+ asection *dlt_sec;
+ asection *dlt_rel_sec;
+ asection *plt_sec;
+ asection *plt_rel_sec;
+ asection *opd_sec;
+ asection *opd_rel_sec;
+ asection *other_rel_sec;
+
+ /* Offset of __gp within .plt section. When the PLT gets large we want
+ to slide __gp into the PLT section so that we can continue to use
+ single DP relative instructions to load values out of the PLT. */
+ bfd_vma gp_offset;
+
+ /* Note this is not strictly correct. We should create a stub section for
+ each input section with calls. The stub section should be placed before
+ the section with the call. */
+ asection *stub_sec;
+
+ bfd_vma text_segment_base;
+ bfd_vma data_segment_base;
+
+ struct elf64_hppa_dyn_hash_table dyn_hash_table;
+
+ /* We build tables to map from an input section back to its
+ symbol index. This is the BFD for which we currently have
+ a map. */
+ bfd *section_syms_bfd;
+
+ /* Array of symbol numbers for each input section attached to the
+ current BFD. */
+ int *section_syms;
+};
+
+#define elf64_hppa_hash_table(p) \
+ ((struct elf64_hppa_link_hash_table *) ((p)->hash))
+
+typedef struct bfd_hash_entry *(*new_hash_entry_func)
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+
+static boolean elf64_hppa_dyn_hash_table_init
+ PARAMS ((struct elf64_hppa_dyn_hash_table *ht, bfd *abfd,
+ new_hash_entry_func new));
+static struct bfd_hash_entry *elf64_hppa_new_dyn_hash_entry
+ PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
+ const char *string));
+static struct bfd_link_hash_table *elf64_hppa_hash_table_create
+ PARAMS ((bfd *abfd));
+static struct elf64_hppa_dyn_hash_entry *elf64_hppa_dyn_hash_lookup
+ PARAMS ((struct elf64_hppa_dyn_hash_table *table, const char *string,
+ boolean create, boolean copy));
+static void elf64_hppa_dyn_hash_traverse
+ PARAMS ((struct elf64_hppa_dyn_hash_table *table,
+ boolean (*func)(struct elf64_hppa_dyn_hash_entry *, PTR),
+ PTR info));
+
+static const char *get_dyn_name
+ PARAMS ((bfd *abfd, struct elf_link_hash_entry *h,
+ const Elf_Internal_Rela *rel, char **pbuf, size_t *plen));
+
+
+/* This must follow the definitions of the various derived linker
+ hash tables and shared functions. */
+#include "elf-hppa.h"
+
+
+static boolean elf64_hppa_object_p
+ PARAMS ((bfd *));
+
+static boolean elf64_hppa_section_from_shdr
+ PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
+
+static void elf64_hppa_post_process_headers
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+static boolean elf64_hppa_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+static boolean elf64_hppa_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+
+static boolean elf64_hppa_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+static boolean elf64_hppa_finish_dynamic_symbol
+ PARAMS ((bfd *, struct bfd_link_info *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *));
+
+static boolean elf64_hppa_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+static boolean elf64_hppa_check_relocs
+ PARAMS ((bfd *, struct bfd_link_info *,
+ asection *, const Elf_Internal_Rela *));
+
+static boolean elf64_hppa_dynamic_symbol_p
+ PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
+
+static boolean elf64_hppa_mark_exported_functions
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+
+static boolean elf64_hppa_finalize_opd
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean elf64_hppa_finalize_dlt
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean allocate_global_data_dlt
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean allocate_global_data_plt
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean allocate_global_data_stub
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean allocate_global_data_opd
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean get_reloc_section
+ PARAMS ((bfd *, struct elf64_hppa_link_hash_table *, asection *));
+
+static boolean count_dyn_reloc
+ PARAMS ((bfd *, struct elf64_hppa_dyn_hash_entry *,
+ int, asection *, int, bfd_vma, bfd_vma));
+
+static boolean allocate_dynrel_entries
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean elf64_hppa_finalize_dynreloc
+ PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+
+static boolean get_opd
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
+
+static boolean get_plt
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
+
+static boolean get_dlt
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
+
+static boolean get_stub
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf64_hppa_link_hash_table *));
+
+static boolean
+elf64_hppa_dyn_hash_table_init (ht, abfd, new)
+ struct elf64_hppa_dyn_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*
+elf64_hppa_new_dyn_hash_entry (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct elf64_hppa_dyn_hash_entry *ret;
+ ret = (struct elf64_hppa_dyn_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 8 bit fields. */
+ memset (ret, 0, sizeof(*ret));
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf64_hppa_dyn_hash_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+
+ return &ret->root;
+}
+
+/* Create the derived linker hash table. The PA64 ELF port uses this
+ derived hash table to keep information specific to the PA ElF
+ linker (without using static variables). */
+
+static struct bfd_link_hash_table*
+elf64_hppa_hash_table_create (abfd)
+ bfd *abfd;
+{
+ struct elf64_hppa_link_hash_table *ret;
+
+ ret = bfd_zalloc (abfd, sizeof (*ret));
+ if (!ret)
+ return 0;
+ if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
+ _bfd_elf_link_hash_newfunc))
+ {
+ bfd_release (abfd, ret);
+ return 0;
+ }
+
+ if (!elf64_hppa_dyn_hash_table_init (&ret->dyn_hash_table, abfd,
+ elf64_hppa_new_dyn_hash_entry))
+ return 0;
+ return &ret->root.root;
+}
+
+/* Look up an entry in a PA64 ELF linker hash table. */
+
+static struct elf64_hppa_dyn_hash_entry *
+elf64_hppa_dyn_hash_lookup(table, string, create, copy)
+ struct elf64_hppa_dyn_hash_table *table;
+ const char *string;
+ boolean create, copy;
+{
+ return ((struct elf64_hppa_dyn_hash_entry *)
+ bfd_hash_lookup (&table->root, string, create, copy));
+}
+
+/* Traverse a PA64 ELF linker hash table. */
+
+static void
+elf64_hppa_dyn_hash_traverse (table, func, info)
+ struct elf64_hppa_dyn_hash_table *table;
+ boolean (*func) PARAMS ((struct elf64_hppa_dyn_hash_entry *, PTR));
+ PTR info;
+{
+ (bfd_hash_traverse
+ (&table->root,
+ (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) func,
+ info));
+}
+\f
+/* Return nonzero if ABFD represents a PA2.0 ELF64 file.
+
+ Additionally we set the default architecture and machine. */
+static boolean
+elf64_hppa_object_p (abfd)
+ bfd *abfd;
+{
+ /* Set the right machine number for an HPPA ELF file. */
+ return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
+}
+
+/* Given section type (hdr->sh_type), return a boolean indicating
+ whether or not the section is an elf64-hppa specific section. */
+static boolean
+elf64_hppa_section_from_shdr (abfd, hdr, name)
+ bfd *abfd;
+ Elf64_Internal_Shdr *hdr;
+ char *name;
+{
+ asection *newsect;
+
+ switch (hdr->sh_type)
+ {
+ case SHT_PARISC_EXT:
+ if (strcmp (name, ".PARISC.archext") != 0)
+ return false;
+ break;
+ case SHT_PARISC_UNWIND:
+ if (strcmp (name, ".PARISC.unwind") != 0)
+ return false;
+ break;
+ case SHT_PARISC_DOC:
+ case SHT_PARISC_ANNOT:
+ default:
+ return false;
+ }
+
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
+ return false;
+ newsect = hdr->bfd_section;
+
+ return true;
+}
+
+
+/* Construct a string for use in the elf64_hppa_dyn_hash_table. The
+ name describes what was once potentially anonymous memory. We
+ allocate memory as necessary, possibly reusing PBUF/PLEN. */
+
+static const char *
+get_dyn_name (abfd, h, rel, pbuf, plen)
+ bfd *abfd;
+ struct elf_link_hash_entry *h;
+ const Elf_Internal_Rela *rel;
+ char **pbuf;
+ size_t *plen;
+{
+ size_t nlen, tlen;
+ char *buf;
+ size_t len;
+
+ if (h && rel->r_addend == 0)
+ return h->root.root.string;
+
+ if (h)
+ nlen = strlen (h->root.root.string);
+ else
+ {
+ nlen = sizeof(void*)*2 + 1 + sizeof(bfd_vma)*4 + 1 + 1;
+ nlen += 10; /* %p slop */
+ }
+ tlen = nlen + 1 + 16 + 1;
+
+ len = *plen;
+ buf = *pbuf;
+ if (len < tlen)
+ {
+ if (buf)
+ free (buf);
+ *pbuf = buf = malloc (tlen);
+ *plen = len = tlen;
+ if (!buf)
+ return NULL;
+ }
+
+ if (h)
+ {
+ memcpy (buf, h->root.root.string, nlen);
+ sprintf_vma (buf + nlen, rel->r_addend);
+ }
+ else
+ {
+ nlen = sprintf (buf, "%p:%lx", abfd, ELF64_R_SYM (rel->r_info));
+ if (rel->r_addend)
+ {
+ buf[nlen++] = '+';
+ sprintf_vma (buf + nlen, rel->r_addend);
+ }
+ }
+
+ return buf;
+}
+
+/* SEC is a section containing relocs for an input BFD when linking; return
+ a suitable section for holding relocs in the output BFD for a link. */
+
+static boolean
+get_reloc_section (abfd, hppa_info, sec)
+ bfd *abfd;
+ struct elf64_hppa_link_hash_table *hppa_info;
+ asection *sec;
+{
+ 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 false;
+
+ 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 = hppa_info->root.dynobj;
+ if (!dynobj)
+ hppa_info->root.dynobj = dynobj = abfd;
+
+ srel = bfd_get_section_by_name (dynobj, srel_name);
+ if (srel == NULL)
+ {
+ 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 false;
+ }
+
+ hppa_info->other_rel_sec = srel;
+ return true;
+}
+
+/* Add a new entry to the list of dynamic relocations against DYN_H.
+
+ We use this to keep a record of all the FPTR relocations against a
+ particular symbol so that we can create FPTR relocations in the
+ output file. */
+
+static boolean
+count_dyn_reloc (abfd, dyn_h, type, sec, sec_symndx, offset, addend)
+ bfd *abfd;
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ int type;
+ asection *sec;
+ int sec_symndx;
+ bfd_vma offset;
+ bfd_vma addend;
+{
+ struct elf64_hppa_dyn_reloc_entry *rent;
+
+ rent = (struct elf64_hppa_dyn_reloc_entry *)
+ bfd_alloc (abfd, sizeof (*rent));
+ if (!rent)
+ return false;
+
+ rent->next = dyn_h->reloc_entries;
+ rent->type = type;
+ rent->sec = sec;
+ rent->sec_symndx = sec_symndx;
+ rent->offset = offset;
+ rent->addend = addend;
+ dyn_h->reloc_entries = rent;
+
+ return true;
+}
+
+/* Scan the RELOCS and record the type of dynamic entries that each
+ referenced symbol needs. */
+
+static boolean
+elf64_hppa_check_relocs (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
+{
+ struct elf64_hppa_link_hash_table *hppa_info;
+ const Elf_Internal_Rela *relend;
+ Elf_Internal_Shdr *symtab_hdr;
+ const Elf_Internal_Rela *rel;
+ asection *dlt, *plt, *stubs;
+ char *buf;
+ size_t buf_len;
+ int sec_symndx;
+
+ if (info->relocateable)
+ return true;
+
+ /* If this is the first dynamic object found in the link, create
+ the special sections required for dynamic linking. */
+ if (! elf_hash_table (info)->dynamic_sections_created)
+ {
+ if (! bfd_elf64_link_create_dynamic_sections (abfd, info))
+ return false;
+ }
+
+ hppa_info = elf64_hppa_hash_table (info);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ /* If necessary, build a new table holding section symbols indices
+ for this BFD. This is disgusting. */
+
+ if (info->shared && hppa_info->section_syms_bfd != abfd)
+ {
+ int i, highest_shndx;
+ asection *section;
+ Elf_Internal_Sym *local_syms, *isym;
+ Elf64_External_Sym *ext_syms, *esym;
+
+ /* We're done with the old cache of section index to section symbol
+ index information. Free it.
+
+ ?!? Note we leak the last section_syms array. Presumably we
+ could free it in one of the later routines in this file. */
+ if (hppa_info->section_syms)
+ free (hppa_info->section_syms);
+
+ /* Allocate memory for the internal and external symbols. */
+ local_syms
+ = (Elf_Internal_Sym *) bfd_malloc (symtab_hdr->sh_info
+ * sizeof (Elf_Internal_Sym));
+ if (local_syms == NULL)
+ return false;
+
+ ext_syms
+ = (Elf64_External_Sym *) bfd_malloc (symtab_hdr->sh_info
+ * sizeof (Elf64_External_Sym));
+ if (ext_syms == NULL)
+ {
+ free (local_syms);
+ return false;
+ }
+
+ /* Read in the local symbols. */
+ if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
+ || bfd_read (ext_syms, 1,
+ (symtab_hdr->sh_info
+ * sizeof (Elf64_External_Sym)), abfd)
+ != (symtab_hdr->sh_info * sizeof (Elf64_External_Sym)))
+ {
+ free (local_syms);
+ free (ext_syms);
+ return false;
+ }
+
+ /* Swap in the local symbols, also record the highest section index
+ referenced by the local symbols. */
+ isym = local_syms;
+ esym = ext_syms;
+ highest_shndx = 0;
+ for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++)
+ {
+ bfd_elf64_swap_symbol_in (abfd, esym, isym);
+ if (isym->st_shndx > highest_shndx)
+ highest_shndx = isym->st_shndx;
+ }
+
+ /* Now we can free the external symbols. */
+ free (ext_syms);
+
+ /* Allocate an array to hold the section index to section symbol index
+ mapping. Bump by one since we start counting at zero. */
+ highest_shndx++;
+ hppa_info->section_syms = (int *) bfd_malloc (highest_shndx
+ * sizeof (int));
+
+ /* Now walk the local symbols again. If we find a section symbol,
+ record the index of the symbol into the section_syms array. */
+ for (isym = local_syms, i = 0; i < symtab_hdr->sh_info; i++, isym++)
+ {
+ if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ hppa_info->section_syms[isym->st_shndx] = i;
+ }
+
+ /* We are finished with the local symbols. Get rid of them. */
+ free (local_syms);
+
+ /* Record which BFD we built the section_syms mapping for. */
+ hppa_info->section_syms_bfd = abfd;
+ }
+
+ /* Record the symbol index for this input section. We may need it for
+ relocations when building shared libraries. When not building shared
+ libraries this value is never really used, but assign it to zero to
+ prevent out of bounds memory accesses in other routines. */
+ if (info->shared)
+ {
+ sec_symndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+
+ /* If we did not find a section symbol for this section, then
+ something went terribly wrong above. */
+ if (sec_symndx == -1)
+ return false;
+
+ sec_symndx = hppa_info->section_syms[sec_symndx];
+ }
+ else
+ sec_symndx = 0;
+
+ dlt = plt = stubs = NULL;
+ buf = NULL;
+ buf_len = 0;
+
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; ++rel)
+ {
+ enum {
+ NEED_DLT = 1,
+ NEED_PLT = 2,
+ NEED_STUB = 4,
+ NEED_OPD = 8,
+ NEED_DYNREL = 16,
+ };
+
+ struct elf_link_hash_entry *h = NULL;
+ unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ int need_entry;
+ const char *addr_name;
+ boolean maybe_dynamic;
+ int dynrel_type = R_PARISC_NONE;
+ static reloc_howto_type *howto;
+
+ 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;
+
+ howto = elf_hppa_howto_table + ELF64_R_TYPE (rel->r_info);
+ need_entry = 0;
+ switch (howto->type)
+ {
+ /* These are simple indirect references to symbols through the
+ DLT. We need to create a DLT entry for any symbols which
+ appears in a DLTIND relocation. */
+ case R_PARISC_DLTIND21L:
+ case R_PARISC_DLTIND14R:
+ case R_PARISC_DLTIND14F:
+ case R_PARISC_DLTIND14WR:
+ case R_PARISC_DLTIND14DR:
+ need_entry = NEED_DLT;
+ break;
+
+ /* ?!? These need a DLT entry. But I have no idea what to do with
+ the "link time TP value. */
+ case R_PARISC_LTOFF_TP21L:
+ case R_PARISC_LTOFF_TP14R:
+ case R_PARISC_LTOFF_TP14F:
+ case R_PARISC_LTOFF_TP64:
+ case R_PARISC_LTOFF_TP14WR:
+ case R_PARISC_LTOFF_TP14DR:
+ case R_PARISC_LTOFF_TP16F:
+ case R_PARISC_LTOFF_TP16WF:
+ case R_PARISC_LTOFF_TP16DF:
+ need_entry = NEED_DLT;
+ break;
+
+ /* These are function calls. Depending on their precise target we
+ may need to make a stub for them. The stub uses the PLT, so we
+ need to create PLT entries for these symbols too. */
+ case R_PARISC_PCREL17F:
+ case R_PARISC_PCREL22F:
+ case R_PARISC_PCREL32:
+ case R_PARISC_PCREL64:
+ case R_PARISC_PCREL21L:
+ case R_PARISC_PCREL17R:
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL14R:
+ case R_PARISC_PCREL14F:
+ case R_PARISC_PCREL22C:
+ case R_PARISC_PCREL14WR:
+ case R_PARISC_PCREL14DR:
+ case R_PARISC_PCREL16F:
+ case R_PARISC_PCREL16WF:
+ case R_PARISC_PCREL16DF:
+ need_entry = (NEED_PLT | NEED_STUB);
+ break;
+
+ case R_PARISC_PLTOFF21L:
+ case R_PARISC_PLTOFF14R:
+ case R_PARISC_PLTOFF14F:
+ case R_PARISC_PLTOFF14WR:
+ case R_PARISC_PLTOFF14DR:
+ case R_PARISC_PLTOFF16F:
+ case R_PARISC_PLTOFF16WF:
+ case R_PARISC_PLTOFF16DF:
+ need_entry = (NEED_PLT);
+ break;
+
+ case R_PARISC_DIR64:
+ if (info->shared || maybe_dynamic)
+ need_entry = (NEED_DYNREL);
+ dynrel_type = R_PARISC_DIR64;
+ break;
+
+ /* This is an indirect reference through the DLT to get the address
+ of a OPD descriptor. Thus we need to make a DLT entry that points
+ to an OPD entry. */
+ case R_PARISC_LTOFF_FPTR21L:
+ case R_PARISC_LTOFF_FPTR14R:
+ case R_PARISC_LTOFF_FPTR14WR:
+ case R_PARISC_LTOFF_FPTR14DR:
+ case R_PARISC_LTOFF_FPTR32:
+ case R_PARISC_LTOFF_FPTR64:
+ case R_PARISC_LTOFF_FPTR16F:
+ case R_PARISC_LTOFF_FPTR16WF:
+ case R_PARISC_LTOFF_FPTR16DF:
+ if (info->shared || maybe_dynamic)
+ need_entry = (NEED_DLT | NEED_OPD);
+ else
+ need_entry = (NEED_DLT | NEED_OPD);
+ dynrel_type = R_PARISC_FPTR64;
+ break;
+
+ /* This is a simple OPD entry. */
+ case R_PARISC_FPTR64:
+ if (info->shared || maybe_dynamic)
+ need_entry = (NEED_OPD | NEED_DYNREL);
+ else
+ need_entry = (NEED_OPD);
+ dynrel_type = R_PARISC_FPTR64;
+ break;
+
+ /* Add more cases as needed. */
+ }
+
+ if (!need_entry)
+ continue;
+
+ /* Collect a canonical name for this address. */
+ addr_name = get_dyn_name (abfd, h, rel, &buf, &buf_len);
+
+ /* Collect the canonical entry data for this address. */
+ dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
+ addr_name, true, true);
+ BFD_ASSERT (dyn_h);
+
+ /* Stash away enough information to be able to find this symbol
+ regardless of whether or not it is local or global. */
+ dyn_h->h = h;
+ dyn_h->owner = abfd;
+ dyn_h->sym_indx = r_symndx;
+
+ /* ?!? We may need to do some error checking in here. */
+ /* Create what's needed. */
+ if (need_entry & NEED_DLT)
+ {
+ if (! hppa_info->dlt_sec
+ && ! get_dlt (abfd, info, hppa_info))
+ goto err_out;
+ dyn_h->want_dlt = 1;
+ }
+
+ if (need_entry & NEED_PLT)
+ {
+ if (! hppa_info->plt_sec
+ && ! get_plt (abfd, info, hppa_info))
+ goto err_out;
+ dyn_h->want_plt = 1;
+ }
+
+ if (need_entry & NEED_STUB)
+ {
+ if (! hppa_info->stub_sec
+ && ! get_stub (abfd, info, hppa_info))
+ goto err_out;
+ dyn_h->want_stub = 1;
+ }
+
+ if (need_entry & NEED_OPD)
+ {
+ if (! hppa_info->opd_sec
+ && ! get_opd (abfd, info, hppa_info))
+ goto err_out;
+
+ dyn_h->want_opd = 1;
+
+ /* FPTRs are not allocated by the dynamic linker for PA64, though
+ it is possible that will change in the future. */
+
+ /* This could be a local function that had its address taken, in
+ which case H will be NULL. */
+ if (h)
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ }
+
+ /* Add a new dynamic relocation to the chain of dynamic
+ relocations for this symbol. */
+ if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
+ {
+ if (! hppa_info->other_rel_sec
+ && ! get_reloc_section (abfd, hppa_info, sec))
+ goto err_out;
+
+ if (!count_dyn_reloc (abfd, dyn_h, dynrel_type, sec,
+ sec_symndx, rel->r_offset, rel->r_addend))
+ goto err_out;
+
+ /* If we are building a shared library and we just recorded
+ a dynamic R_PARISC_FPTR64 relocation, then make sure the
+ section symbol for this section ends up in the dynamic
+ symbol table. */
+ if (info->shared && dynrel_type == R_PARISC_FPTR64
+ && ! (_bfd_elf64_link_record_local_dynamic_symbol
+ (info, abfd, sec_symndx)))
+ return false;
+ }
+ }
+
+ if (buf)
+ free (buf);
+ return true;
+
+ err_out:
+ if (buf)
+ free (buf);
+ return false;
+}
+
+struct elf64_hppa_allocate_data
+{
+ struct bfd_link_info *info;
+ bfd_size_type ofs;
+};
+
+/* Should we do dynamic things to this symbol? */
+
+static boolean
+elf64_hppa_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 (h->root.root.string[0] == '$' && h->root.root.string[1] == '$')
+ return false;
+
+ 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;
+}
+
+/* Mark all funtions exported by this file so that we can later allocate
+ entries in .opd for them. */
+
+static boolean
+elf64_hppa_mark_exported_functions (h, data)
+ struct elf_link_hash_entry *h;
+ PTR data;
+{
+ struct bfd_link_info *info = (struct bfd_link_info *)data;
+ struct elf64_hppa_link_hash_table *hppa_info;
+
+ hppa_info = elf64_hppa_hash_table (info);
+
+ if (h
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && h->root.u.def.section->output_section != NULL
+ && h->type == STT_FUNC)
+ {
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+
+ /* Add this symbol to the PA64 linker hash table. */
+ dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
+ h->root.root.string, true, true);
+ BFD_ASSERT (dyn_h);
+ dyn_h->h = h;
+
+ if (! hppa_info->opd_sec
+ && ! get_opd (hppa_info->root.dynobj, info, hppa_info))
+ return false;
+
+ dyn_h->want_opd = 1;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ }
+
+ return true;
+}
+
+/* Allocate space for a DLT entry. */
+
+static boolean
+allocate_global_data_dlt (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
+
+ if (dyn_h->want_dlt)
+ {
+ struct elf_link_hash_entry *h = dyn_h->h;
+
+ if (x->info->shared)
+ {
+ /* Possibly add the symbol to the local dynamic symbol
+ table since we might need to create a dynamic relocation
+ against it. */
+ if (! h
+ || (h && h->dynindx == -1))
+ {
+ bfd *owner;
+ owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
+
+ if (!_bfd_elf64_link_record_local_dynamic_symbol
+ (x->info, owner, dyn_h->sym_indx))
+ return false;
+ }
+ }
+
+ dyn_h->dlt_offset = x->ofs;
+ x->ofs += DLT_ENTRY_SIZE;
+ }
+ return true;
+}
+
+/* Allocate space for a DLT.PLT entry. */
+
+static boolean
+allocate_global_data_plt (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
+
+ if (dyn_h->want_plt
+ && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
+ && !((dyn_h->h->root.type == bfd_link_hash_defined
+ || dyn_h->h->root.type == bfd_link_hash_defweak)
+ && dyn_h->h->root.u.def.section->output_section != NULL))
+ {
+ dyn_h->plt_offset = x->ofs;
+ x->ofs += PLT_ENTRY_SIZE;
+ if (dyn_h->plt_offset < 0x2000)
+ elf64_hppa_hash_table (x->info)->gp_offset = dyn_h->plt_offset;
+ }
+ else
+ dyn_h->want_plt = 0;
+
+ return true;
+}
+
+/* Allocate space for a STUB entry. */
+
+static boolean
+allocate_global_data_stub (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
+
+ if (dyn_h->want_stub
+ && elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info)
+ && !((dyn_h->h->root.type == bfd_link_hash_defined
+ || dyn_h->h->root.type == bfd_link_hash_defweak)
+ && dyn_h->h->root.u.def.section->output_section != NULL))
+ {
+ dyn_h->stub_offset = x->ofs;
+ x->ofs += sizeof (plt_stub);
+ }
+ else
+ dyn_h->want_stub = 0;
+ return true;
+}
+
+/* Allocate space for a FPTR entry. */
+
+static boolean
+allocate_global_data_opd (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
+
+ if (dyn_h->want_opd)
+ {
+ struct elf_link_hash_entry *h = dyn_h->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;
+
+ /* We never need an opd entry for a symbol which is not
+ defined by this output file. */
+ if (h && h->root.type == bfd_link_hash_undefined)
+ dyn_h->want_opd = 0;
+
+ /* If we are creating a shared library, took the address of a local
+ function or might export this function from this object file, then
+ we have to create an opd descriptor. */
+ else if (x->info->shared
+ || h == NULL
+ || h->dynindx == -1
+ || ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && h->root.u.def.section->output_section != NULL))
+ {
+ /* If we are creating a shared library, then we will have to
+ create a runtime relocation for the symbol to properly
+ initialize the .opd entry. Make sure the symbol gets
+ added to the dynamic symbol table. */
+ if (x->info->shared
+ && (h == NULL || (h->dynindx == -1)))
+ {
+ bfd *owner;
+ owner = (h ? h->root.u.def.section->owner : dyn_h->owner);
+
+ if (!_bfd_elf64_link_record_local_dynamic_symbol
+ (x->info, owner, dyn_h->sym_indx))
+ return false;
+ }
+
+ /* This may not be necessary or desirable anymore now that
+ we have some support for dealing with section symbols
+ in dynamic relocs. But name munging does make the result
+ much easier to debug. ie, the EPLT reloc will reference
+ a symbol like .foobar, instead of .text + offset. */
+ if (x->info->shared && h)
+ {
+ char *new_name;
+ struct elf_link_hash_entry *nh;
+
+ new_name = alloca (strlen (h->root.root.string) + 2);
+ new_name[0] = '.';
+ strcpy (new_name + 1, h->root.root.string);
+
+ nh = elf_link_hash_lookup (elf_hash_table (x->info),
+ new_name, true, true, true);
+
+ nh->root.type = h->root.type;
+ nh->root.u.def.value = h->root.u.def.value;
+ nh->root.u.def.section = h->root.u.def.section;
+
+ if (! bfd_elf64_link_record_dynamic_symbol (x->info, nh))
+ return false;
+
+ }
+ dyn_h->opd_offset = x->ofs;
+ x->ofs += OPD_ENTRY_SIZE;
+ }
+
+ /* Otherwise we do not need an opd entry. */
+ else
+ dyn_h->want_opd = 0;
+ }
+ return true;
+}
+
+/* HP requires the EI_OSABI field to be filled in. The assignment to
+ EI_ABIVERSION may not be strictly necessary. */
+
+static void
+elf64_hppa_post_process_headers (abfd, link_info)
+ bfd * abfd;
+ struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
+{
+ Elf_Internal_Ehdr * i_ehdrp;
+
+ i_ehdrp = elf_elfheader (abfd);
+
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
+ i_ehdrp->e_ident[EI_ABIVERSION] = 1;
+}
+
+/* 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 boolean
+get_opd (abfd, info, hppa_info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ struct elf64_hppa_link_hash_table *hppa_info;
+{
+ asection *opd;
+ bfd *dynobj;
+
+ opd = hppa_info->opd_sec;
+ if (!opd)
+ {
+ dynobj = hppa_info->root.dynobj;
+ if (!dynobj)
+ hppa_info->root.dynobj = dynobj = abfd;
+
+ opd = bfd_make_section (dynobj, ".opd");
+ if (!opd
+ || !bfd_set_section_flags (dynobj, opd,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, opd, 3))
+ {
+ BFD_ASSERT (0);
+ return false;
+ }
+
+ hppa_info->opd_sec = opd;
+ }
+
+ return true;
+}
+
+/* Create the PLT section. */
+
+static boolean
+get_plt (abfd, info, hppa_info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ struct elf64_hppa_link_hash_table *hppa_info;
+{
+ asection *plt;
+ bfd *dynobj;
+
+ plt = hppa_info->plt_sec;
+ if (!plt)
+ {
+ dynobj = hppa_info->root.dynobj;
+ if (!dynobj)
+ hppa_info->root.dynobj = dynobj = abfd;
+
+ plt = bfd_make_section (dynobj, ".plt");
+ if (!plt
+ || !bfd_set_section_flags (dynobj, plt,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, plt, 3))
+ {
+ BFD_ASSERT (0);
+ return false;
+ }
+
+ hppa_info->plt_sec = plt;
+ }
+
+ return true;
+}
+
+/* Create the DLT section. */
+
+static boolean
+get_dlt (abfd, info, hppa_info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ struct elf64_hppa_link_hash_table *hppa_info;
+{
+ asection *dlt;
+ bfd *dynobj;
+
+ dlt = hppa_info->dlt_sec;
+ if (!dlt)
+ {
+ dynobj = hppa_info->root.dynobj;
+ if (!dynobj)
+ hppa_info->root.dynobj = dynobj = abfd;
+
+ dlt = bfd_make_section (dynobj, ".dlt");
+ if (!dlt
+ || !bfd_set_section_flags (dynobj, dlt,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, dlt, 3))
+ {
+ BFD_ASSERT (0);
+ return false;
+ }
+
+ hppa_info->dlt_sec = dlt;
+ }
+
+ return true;
+}
+
+/* Create the stubs section. */
+
+static boolean
+get_stub (abfd, info, hppa_info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ struct elf64_hppa_link_hash_table *hppa_info;
+{
+ asection *stub;
+ bfd *dynobj;
+
+ stub = hppa_info->stub_sec;
+ if (!stub)
+ {
+ dynobj = hppa_info->root.dynobj;
+ if (!dynobj)
+ hppa_info->root.dynobj = dynobj = abfd;
+
+ stub = bfd_make_section (dynobj, ".stub");
+ if (!stub
+ || !bfd_set_section_flags (dynobj, stub,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, stub, 3))
+ {
+ BFD_ASSERT (0);
+ return false;
+ }
+
+ hppa_info->stub_sec = stub;
+ }
+
+ return true;
+}
+
+/* Create sections necessary for dynamic linking. This is only a rough
+ cut and will likely change as we learn more about the somewhat
+ unusual dynamic linking scheme HP uses.
+
+ .stub:
+ Contains code to implement cross-space calls. The first time one
+ of the stubs is used it will call into the dynamic linker, later
+ calls will go straight to the target.
+
+ The only stub we support right now looks like
+
+ ldd OFFSET(%dp),%r1
+ bve %r0(%r1)
+ ldd OFFSET+8(%dp),%dp
+
+ Other stubs may be needed in the future. We may want the remove
+ the break/nop instruction. It is only used right now to keep the
+ offset of a .plt entry and a .stub entry in sync.
+
+ .dlt:
+ This is what most people call the .got. HP used a different name.
+ Losers.
+
+ .rela.dlt:
+ Relocations for the DLT.
+
+ .plt:
+ Function pointers as address,gp pairs.
+
+ .rela.plt:
+ Should contain dynamic IPLT (and EPLT?) relocations.
+
+ .opd:
+ FPTRS
+
+ .rela.opd:
+ EPLT relocations for symbols exported from shared libraries. */
+
+static boolean
+elf64_hppa_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ asection *s;
+
+ if (! get_stub (abfd, info, elf64_hppa_hash_table (info)))
+ return false;
+
+ if (! get_dlt (abfd, info, elf64_hppa_hash_table (info)))
+ return false;
+
+ if (! get_plt (abfd, info, elf64_hppa_hash_table (info)))
+ return false;
+
+ if (! get_opd (abfd, info, elf64_hppa_hash_table (info)))
+ return false;
+
+ s = bfd_make_section(abfd, ".rela.dlt");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, s, 3))
+ return false;
+ elf64_hppa_hash_table (info)->dlt_rel_sec = s;
+
+ s = bfd_make_section(abfd, ".rela.plt");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, s, 3))
+ return false;
+ elf64_hppa_hash_table (info)->plt_rel_sec = s;
+
+ s = bfd_make_section(abfd, ".rela.data");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, s, 3))
+ return false;
+ elf64_hppa_hash_table (info)->other_rel_sec = s;
+
+ s = bfd_make_section(abfd, ".rela.opd");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY
+ | SEC_LINKER_CREATED))
+ || !bfd_set_section_alignment (abfd, s, 3))
+ return false;
+ elf64_hppa_hash_table (info)->opd_rel_sec = s;
+
+ return true;
+}
+
+/* Allocate dynamic relocations for those symbols that turned out
+ to be dynamic. */
+
+static boolean
+allocate_dynrel_entries (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct elf64_hppa_allocate_data *x = (struct elf64_hppa_allocate_data *)data;
+ struct elf64_hppa_link_hash_table *hppa_info;
+ struct elf64_hppa_dyn_reloc_entry *rent;
+ boolean dynamic_symbol, shared;
+
+ hppa_info = elf64_hppa_hash_table (x->info);
+ dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, x->info);
+ shared = x->info->shared;
+
+ /* We may need to allocate relocations for a non-dynamic symbol
+ when creating a shared library. */
+ if (!dynamic_symbol && !shared)
+ return true;
+
+ /* Take care of the normal data relocations. */
+
+ for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
+ {
+ switch (rent->type)
+ {
+ case R_PARISC_FPTR64:
+ /* Allocate one iff we are not building a shared library and
+ !want_opd, which by this point will be true only if we're
+ actually allocating one statically in the main executable. */
+ if (!x->info->shared && dyn_h->want_opd)
+ continue;
+ break;
+ }
+ hppa_info->other_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
+
+ /* Make sure this symbol gets into the dynamic symbol table if it is
+ not already recorded. ?!? This should not be in the loop since
+ the symbol need only be added once. */
+ if (dyn_h->h == 0 || dyn_h->h->dynindx == -1)
+ if (!_bfd_elf64_link_record_local_dynamic_symbol
+ (x->info, rent->sec->owner, dyn_h->sym_indx))
+ return false;
+ }
+
+ /* Take care of the GOT and PLT relocations. */
+
+ if ((dynamic_symbol || shared) && dyn_h->want_dlt)
+ hppa_info->dlt_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
+
+ /* If we are building a shared library, then every symbol that has an
+ opd entry will need an EPLT relocation to relocate the symbol's address
+ and __gp value based on the runtime load address. */
+ if (shared && dyn_h->want_opd)
+ hppa_info->opd_rel_sec->_raw_size += sizeof (Elf64_External_Rela);
+
+ if (dyn_h->want_plt && dynamic_symbol)
+ {
+ 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 (Elf64_External_Rela);
+ else if (shared)
+ t = 2 * sizeof (Elf64_External_Rela);
+
+ hppa_info->plt_rel_sec->_raw_size += t;
+ }
+
+ return true;
+}
+
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. */
+
+static boolean
+elf64_hppa_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 PA64 code is canonically PIC, so as a rule we can avoid this sort
+ of hackery. */
+
+ return true;
+}
+
+/* Set the final sizes of the dynamic sections and allocate memory for
+ the contents of our special sections. */
+
+static boolean
+elf64_hppa_size_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *s;
+ boolean plt;
+ boolean relocs;
+ boolean reltext;
+ boolean stubs;
+ struct elf64_hppa_allocate_data data;
+ struct elf64_hppa_link_hash_table *hppa_info;
+
+ hppa_info = elf64_hppa_hash_table (info);
+
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (! info->shared)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
+ else
+ {
+ /* We may have created entries in the .rela.got section.
+ However, if we are not creating the dynamic sections, we will
+ not actually use these entries. Reset the size of .rela.dlt,
+ which will cause it to get stripped from the output file
+ below. */
+ s = bfd_get_section_by_name (dynobj, ".rela.dlt");
+ if (s != NULL)
+ s->_raw_size = 0;
+ }
+
+ /* Allocate the GOT entries. */
+
+ data.info = info;
+ if (elf64_hppa_hash_table (info)->dlt_sec)
+ {
+ data.ofs = 0x0;
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ allocate_global_data_dlt, &data);
+ hppa_info->dlt_sec->_raw_size = data.ofs;
+
+ data.ofs = 0x0;
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ allocate_global_data_plt, &data);
+ hppa_info->plt_sec->_raw_size = data.ofs;
+
+ data.ofs = 0x0;
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ allocate_global_data_stub, &data);
+ hppa_info->stub_sec->_raw_size = data.ofs;
+ }
+
+ /* Mark each function this program exports so that we will allocate
+ space in the .opd section for each function's FPTR.
+
+ We have to traverse the main linker hash table since we have to
+ find functions which may not have been mentioned in any relocs. */
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf64_hppa_mark_exported_functions,
+ info);
+
+ /* Allocate space for entries in the .opd section. */
+ if (elf64_hppa_hash_table (info)->opd_sec)
+ {
+ data.ofs = 0;
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ allocate_global_data_opd, &data);
+ hppa_info->opd_sec->_raw_size = data.ofs;
+ }
+
+ /* Now allocate space for dynamic relocations, if necessary. */
+ if (hppa_info->root.dynamic_sections_created)
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ allocate_dynrel_entries, &data);
+
+ /* The sizes of all the sections are set. Allocate memory for them. */
+ plt = false;
+ relocs = false;
+ reltext = false;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char *name;
+ boolean strip;
+
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ /* It's OK to base decisions on the section name, because none
+ of the dynobj section names depend upon the input files. */
+ name = bfd_get_section_name (dynobj, s);
+
+ strip = 0;
+
+ if (strcmp (name, ".plt") == 0)
+ {
+ if (s->_raw_size == 0)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ strip = true;
+ }
+ else
+ {
+ /* Remember whether there is a PLT. */
+ plt = true;
+ }
+ }
+ else if (strcmp (name, ".dlt") == 0)
+ {
+ if (s->_raw_size == 0)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ strip = true;
+ }
+ }
+ else if (strcmp (name, ".opd") == 0)
+ {
+ if (s->_raw_size == 0)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ strip = true;
+ }
+ }
+ else if (strncmp (name, ".rela", 4) == 0)
+ {
+ if (s->_raw_size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ strip = true;
+ }
+ else
+ {
+ asection *target;
+
+ /* Remember whether there are any reloc sections other
+ than .rela.plt. */
+ if (strcmp (name, ".rela.plt") != 0)
+ {
+ const char *outname;
+
+ relocs = true;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL
+ entry. The entries in the .rela.plt section
+ really apply to the .got section, which we
+ created ourselves and so know is not readonly. */
+ outname = bfd_get_section_name (output_bfd,
+ s->output_section);
+ target = bfd_get_section_by_name (output_bfd, outname + 4);
+ 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. */
+ s->reloc_count = 0;
+ }
+ }
+ else if (strncmp (name, ".dlt", 4) != 0
+ && strcmp (name, ".stub") != 0
+ && strcmp (name, ".got") != 0)
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
+
+ if (strip)
+ {
+ _bfd_strip_section_from_output (info, s);
+ continue;
+ }
+
+ /* Allocate memory for the section contents if it has not
+ been allocated already. */
+ if (s->contents == NULL)
+ {
+ s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ return false;
+ }
+ }
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Always create a DT_PLTGOT. It actually has nothing to do with
+ the PLT, it is how we communicate the __gp value of a load
+ module to the dynamic linker. */
+ if (! bfd_elf64_add_dynamic_entry (info, DT_HP_DLD_FLAGS, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0))
+ return false;
+
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elf64_hppa_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+ if (! info->shared)
+ {
+ if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_HP_DLD_HOOK, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_HP_LOAD_MAP, 0))
+ return false;
+ }
+
+ if (plt)
+ {
+ if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0))
+ return false;
+ }
+
+ if (relocs)
+ {
+ if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0)
+ || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT,
+ sizeof (Elf64_External_Rela)))
+ return false;
+ }
+
+ if (reltext)
+ {
+ if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* Called after we have output the symbol into the dynamic symbol
+ table, but before we output the symbol into the normal symbol
+ table.
+
+ For some symbols we had to change their address when outputting
+ the dynamic symbol table. We undo that change here so that
+ the symbols have their expected value in the normal symbol
+ table. Ick. */
+
+static boolean
+elf64_hppa_link_output_symbol_hook (abfd, info, name, sym, input_sec)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ const char *name;
+ Elf_Internal_Sym *sym;
+ asection *input_sec;
+{
+ struct elf64_hppa_link_hash_table *hppa_info;
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+
+ /* We may be called with the file symbol or section symbols.
+ They never need munging, so it is safe to ignore them. */
+ if (!name)
+ return true;
+
+ /* Get the PA dyn_symbol (if any) associated with NAME. */
+ hppa_info = elf64_hppa_hash_table (info);
+ dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
+ name, false, false);
+
+ /* Function symbols for which we created .opd entries were munged
+ by finish_dynamic_symbol and have to be un-munged here. */
+ if (dyn_h && dyn_h->want_opd)
+ {
+ /* Restore the saved value and section index. */
+ sym->st_value = dyn_h->st_value;
+ sym->st_shndx = dyn_h->st_shndx;
+ }
+
+ return true;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static boolean
+elf64_hppa_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;
+{
+ asection *stub, *splt, *sdlt, *sopd, *spltrel, *sdltrel;
+ struct elf64_hppa_link_hash_table *hppa_info;
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+
+ hppa_info = elf64_hppa_hash_table (info);
+ dyn_h = elf64_hppa_dyn_hash_lookup (&hppa_info->dyn_hash_table,
+ h->root.root.string, false, false);
+
+ stub = hppa_info->stub_sec;
+ splt = hppa_info->plt_sec;
+ sdlt = hppa_info->dlt_sec;
+ sopd = hppa_info->opd_sec;
+ spltrel = hppa_info->plt_rel_sec;
+ sdltrel = hppa_info->dlt_rel_sec;
+
+ BFD_ASSERT (stub != NULL && splt != NULL
+ && sopd != NULL && sdlt != NULL)
+
+ /* Incredible. It is actually necessary to NOT use the symbol's real
+ value when building the dynamic symbol table for a shared library.
+ At least for symbols that refer to functions.
+
+ We will store a new value and section index into the symbol long
+ enough to output it into the dynamic symbol table, then we restore
+ the original values (in elf64_hppa_link_output_symbol_hook). */
+ if (dyn_h && dyn_h->want_opd)
+ {
+ /* Save away the original value and section index so that we
+ can restore them later. */
+ dyn_h->st_value = sym->st_value;
+ dyn_h->st_shndx = sym->st_shndx;
+
+ /* For the dynamic symbol table entry, we want the value to be
+ address of this symbol's entry within the .opd section. */
+ sym->st_value = (dyn_h->opd_offset
+ + sopd->output_offset
+ + sopd->output_section->vma);
+ sym->st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
+ sopd->output_section);
+ }
+
+ /* Initialize a .plt entry if requested. */
+ if (dyn_h && dyn_h->want_plt
+ && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
+ {
+ bfd_vma value;
+ Elf_Internal_Rela rel;
+
+ /* We do not actually care about the value in the PLT entry
+ if we are creating a shared library and the symbol is
+ still undefined, we create a dynamic relocation to fill
+ in the correct value. */
+ if (info->shared && h->root.type == bfd_link_hash_undefined)
+ value = 0;
+ else
+ value = (h->root.u.def.value + h->root.u.def.section->vma);
+
+ /* Fill in the entry in the procedure linkage table.
+
+ The format of a plt entry is
+ <funcaddr> <__gp>.
+
+ plt_offset is the offset within the PLT section at which to
+ install the PLT entry.
+
+ We are modifying the in-memory PLT contents here, so we do not add
+ in the output_offset of the PLT section. */
+
+ bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset);
+ value = _bfd_get_gp_value (splt->output_section->owner);
+ bfd_put_64 (splt->owner, value, splt->contents + dyn_h->plt_offset + 0x8);
+
+ /* Create a dynamic IPLT relocation for this entry.
+
+ We are creating a relocation in the output file's PLT section,
+ which is included within the DLT secton. So we do need to include
+ the PLT's output_offset in the computation of the relocation's
+ address. */
+ rel.r_offset = (dyn_h->plt_offset + splt->output_offset
+ + splt->output_section->vma);
+ rel.r_info = ELF64_R_INFO (h->dynindx, R_PARISC_IPLT);
+ rel.r_addend = 0;
+
+ bfd_elf64_swap_reloca_out (splt->output_section->owner, &rel,
+ (((Elf64_External_Rela *)
+ spltrel->contents)
+ + spltrel->reloc_count));
+ spltrel->reloc_count++;
+ }
+
+ /* Initialize an external call stub entry if requested. */
+ if (dyn_h && dyn_h->want_stub
+ && elf64_hppa_dynamic_symbol_p (dyn_h->h, info))
+ {
+ bfd_vma value;
+ int insn;
+
+ /* Install the generic stub template.
+
+ We are modifying the contents of the stub section, so we do not
+ need to include the stub section's output_offset here. */
+ memcpy (stub->contents + dyn_h->stub_offset, plt_stub, sizeof (plt_stub));
+
+ /* Fix up the first ldd instruction.
+
+ We are modifying the contents of the STUB section in memory,
+ so we do not need to include its output offset in this computation.
+
+ Note the plt_offset value is the value of the PLT entry relative to
+ the start of the PLT section. These instructions will reference
+ data relative to the value of __gp, which may not necessarily have
+ the same address as the start of the PLT section.
+
+ gp_offset contains the offset of __gp within the PLT section. */
+ value = dyn_h->plt_offset - hppa_info->gp_offset;
+
+ insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset);
+ insn &= 0xffffc00e;
+ insn |= ((value & 0x2000) >> 13);
+ value &= 0x1ff8;
+ value <<= 1;
+ bfd_put_32 (stub->owner, (insn | value),
+ stub->contents + dyn_h->stub_offset);
+
+ /* Fix up the second ldd instruction. */
+ value = dyn_h->plt_offset - hppa_info->gp_offset + 8;
+
+ insn = bfd_get_32 (stub->owner, stub->contents + dyn_h->stub_offset + 8);
+ insn &= 0xffffc00e;
+ insn |= ((value & 0x2000) >> 13);
+ value &= 0x1ff8;
+ value <<= 1;
+ bfd_put_32 (stub->owner, (insn | value),
+ stub->contents + dyn_h->stub_offset + 8);
+ }
+
+ /* Millicode symbols should not be put in the dynamic
+ symbol table under any circumstances. */
+ if (ELF_ST_TYPE (sym->st_info) == STT_PARISC_MILLI)
+ h->dynindx = -1;
+
+ return true;
+}
+
+/* The .opd section contains FPTRs for each function this file
+ exports. Initialize the FPTR entries. */
+
+static boolean
+elf64_hppa_finalize_opd (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct bfd_link_info *info = (struct bfd_link_info *)data;
+ struct elf64_hppa_link_hash_table *hppa_info;
+ struct elf_link_hash_entry *h = dyn_h->h;
+ asection *sopd;
+ asection *sopdrel;
+
+ hppa_info = elf64_hppa_hash_table (info);
+ sopd = hppa_info->opd_sec;
+ sopdrel = hppa_info->opd_rel_sec;
+
+ if (h && dyn_h && dyn_h->want_opd)
+ {
+ bfd_vma value;
+
+ /* The first two words of an .opd entry are zero.
+
+ We are modifying the contents of the OPD section in memory, so we
+ do not need to include its output offset in this computation. */
+ memset (sopd->contents + dyn_h->opd_offset, 0, 16);
+
+ value = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+
+ /* The next word is the address of the function. */
+ bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 16);
+
+ /* The last word is our local __gp value. */
+ value = _bfd_get_gp_value (sopd->output_section->owner);
+ bfd_put_64 (sopd->owner, value, sopd->contents + dyn_h->opd_offset + 24);
+ }
+
+ /* If we are generating a shared library, we must generate EPLT relocations
+ for each entry in the .opd, even for static functions (they may have
+ had their address taken). */
+ if (info->shared && dyn_h && dyn_h->want_opd)
+ {
+ Elf64_Internal_Rela rel;
+ bfd_vma value;
+ int dynindx;
+
+ /* We may need to do a relocation against a local symbol, in
+ which case we have to look up it's dynamic symbol index off
+ the local symbol hash table. */
+ if (h && h->dynindx != -1)
+ dynindx = h->dynindx;
+ else
+ dynindx
+ = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
+ dyn_h->sym_indx);
+
+ /* The offset of this relocation is the absolute address of the
+ .opd entry for this symbol. */
+ rel.r_offset = (dyn_h->opd_offset + sopd->output_offset
+ + sopd->output_section->vma);
+
+ /* If H is non-null, then we have an external symbol.
+
+ It is imperative that we use a different dynamic symbol for the
+ EPLT relocation if the symbol has global scope.
+
+ In the dynamic symbol table, the function symbol will have a value
+ which is address of the function's .opd entry.
+
+ Thus, we can not use that dynamic symbol for the EPLT relocation
+ (if we did, the data in the .opd would reference itself rather
+ than the actual address of the function). Instead we have to use
+ a new dynamic symbol which has the same value as the original global
+ function symbol.
+
+ We prefix the original symbol with a "." and use the new symbol in
+ the EPLT relocation. This new symbol has already been recorded in
+ the symbol table, we just have to look it up and use it.
+
+ We do not have such problems with static functions because we do
+ not make their addresses in the dynamic symbol table point to
+ the .opd entry. Ultimately this should be safe since a static
+ function can not be directly referenced outside of its shared
+ library.
+
+ We do have to play similar games for FPTR relocations in shared
+ libraries, including those for static symbols. See the FPTR
+ handling in elf64_hppa_finalize_dynreloc. */
+ if (h)
+ {
+ char *new_name;
+ struct elf_link_hash_entry *nh;
+
+ new_name = alloca (strlen (h->root.root.string) + 2);
+ new_name[0] = '.';
+ strcpy (new_name + 1, h->root.root.string);
+
+ nh = elf_link_hash_lookup (elf_hash_table (info),
+ new_name, false, false, false);
+
+ /* All we really want from the new symbol is its dynamic
+ symbol index. */
+ dynindx = nh->dynindx;
+ }
+
+ rel.r_addend = 0;
+ rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_EPLT);
+
+ bfd_elf64_swap_reloca_out (sopd->output_section->owner, &rel,
+ (((Elf64_External_Rela *)
+ sopdrel->contents)
+ + sopdrel->reloc_count));
+ sopdrel->reloc_count++;
+ }
+ return true;
+}
+
+/* The .dlt section contains addresses for items referenced through the
+ dlt. Note that we can have a DLTIND relocation for a local symbol, thus
+ we can not depend on finish_dynamic_symbol to initialize the .dlt. */
+
+static boolean
+elf64_hppa_finalize_dlt (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct bfd_link_info *info = (struct bfd_link_info *)data;
+ struct elf64_hppa_link_hash_table *hppa_info;
+ asection *sdlt, *sdltrel;
+ struct elf_link_hash_entry *h = dyn_h->h;
+
+ hppa_info = elf64_hppa_hash_table (info);
+
+ sdlt = hppa_info->dlt_sec;
+ sdltrel = hppa_info->dlt_rel_sec;
+
+ /* H/DYN_H may refer to a local variable and we know it's
+ address, so there is no need to create a relocation. Just install
+ the proper value into the DLT, note this shortcut can not be
+ skipped when building a shared library. */
+ if (! info->shared && h && dyn_h && dyn_h->want_dlt)
+ {
+ bfd_vma value;
+
+ /* If we had an LTOFF_FPTR style relocation we want the DLT entry
+ to point to the FPTR entry in the .opd section.
+
+ We include the OPD's output offset in this computation as
+ we are referring to an absolute address in the resulting
+ object file. */
+ if (dyn_h->want_opd)
+ {
+ value = (dyn_h->opd_offset
+ + hppa_info->opd_sec->output_offset
+ + hppa_info->opd_sec->output_section->vma);
+ }
+ else
+ {
+ value = (h->root.u.def.value
+ + h->root.u.def.section->output_offset);
+
+ if (h->root.u.def.section->output_section)
+ value += h->root.u.def.section->output_section->vma;
+ else
+ value += h->root.u.def.section->vma;
+ }
+
+ /* We do not need to include the output offset of the DLT section
+ here because we are modifying the in-memory contents. */
+ bfd_put_64 (sdlt->owner, value, sdlt->contents + dyn_h->dlt_offset);
+ }
+
+ /* Create a relocation for the DLT entry assocated with this symbol.
+ When building a shared library the symbol does not have to be dynamic. */
+ if (dyn_h->want_dlt
+ && (elf64_hppa_dynamic_symbol_p (dyn_h->h, info) || info->shared))
+ {
+ Elf64_Internal_Rela rel;
+ int dynindx;
+
+ /* We may need to do a relocation against a local symbol, in
+ which case we have to look up it's dynamic symbol index off
+ the local symbol hash table. */
+ if (h && h->dynindx != -1)
+ dynindx = h->dynindx;
+ else
+ dynindx
+ = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
+ dyn_h->sym_indx);
+
+
+ /* Create a dynamic relocation for this entry. Do include the output
+ offset of the DLT entry since we need an absolute address in the
+ resulting object file. */
+ rel.r_offset = (dyn_h->dlt_offset + sdlt->output_offset
+ + sdlt->output_section->vma);
+ if (h && h->type == STT_FUNC)
+ rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_FPTR64);
+ else
+ rel.r_info = ELF64_R_INFO (dynindx, R_PARISC_DIR64);
+ rel.r_addend = 0;
+
+ bfd_elf64_swap_reloca_out (sdlt->output_section->owner, &rel,
+ (((Elf64_External_Rela *)
+ sdltrel->contents)
+ + sdltrel->reloc_count));
+ sdltrel->reloc_count++;
+ }
+ return true;
+}
+
+/* Finalize the dynamic relocations. Specifically the FPTR relocations
+ for dynamic functions used to initialize static data. */
+
+static boolean
+elf64_hppa_finalize_dynreloc (dyn_h, data)
+ struct elf64_hppa_dyn_hash_entry *dyn_h;
+ PTR data;
+{
+ struct bfd_link_info *info = (struct bfd_link_info *)data;
+ struct elf64_hppa_link_hash_table *hppa_info;
+ struct elf_link_hash_entry *h;
+ int dynamic_symbol;
+
+ dynamic_symbol = elf64_hppa_dynamic_symbol_p (dyn_h->h, info);
+
+ if (!dynamic_symbol && !info->shared)
+ return true;
+
+ if (dyn_h->reloc_entries)
+ {
+ struct elf64_hppa_dyn_reloc_entry *rent;
+ int dynindx;
+
+ hppa_info = elf64_hppa_hash_table (info);
+ h = dyn_h->h;
+
+ /* We may need to do a relocation against a local symbol, in
+ which case we have to look up it's dynamic symbol index off
+ the local symbol hash table. */
+ if (h && h->dynindx != -1)
+ dynindx = h->dynindx;
+ else
+ dynindx
+ = _bfd_elf_link_lookup_local_dynindx (info, dyn_h->owner,
+ dyn_h->sym_indx);
+
+ for (rent = dyn_h->reloc_entries; rent; rent = rent->next)
+ {
+ Elf64_Internal_Rela rel;
+
+ switch (rent->type)
+ {
+ case R_PARISC_FPTR64:
+ /* Allocate one iff we are not building a shared library and
+ !want_opd, which by this point will be true only if we're
+ actually allocating one statically in the main executable. */
+ if (!info->shared && dyn_h->want_opd)
+ continue;
+ break;
+ }
+
+ /* Create a dynamic relocation for this entry.
+
+ We need the output offset for the reloc's section because
+ we are creating an absolute address in the resulting object
+ file. */
+ rel.r_offset = (rent->offset + rent->sec->output_offset
+ + rent->sec->output_section->vma);
+
+ /* An FPTR64 relocation implies that we took the address of
+ a function and that the function has an entry in the .opd
+ section. We want the FPTR64 relocation to reference the
+ entry in .opd.
+
+ We could munge the symbol value in the dynamic symbol table
+ (in fact we already do for functions with global scope) to point
+ to the .opd entry. Then we could use that dynamic symbol in
+ this relocation.
+
+ Or we could do something sensible, not munge the symbol's
+ address and instead just use a different symbol to reference
+ the .opd entry. At least that seems sensible until you
+ realize there's no local dynamic symbols we can use for that
+ purpose. Thus the hair in the check_relocs routine.
+
+ We use a section symbol recorded by check_relocs as the
+ base symbol for the relocation. The addend is the difference
+ between the section symbol and the address of the .opd entry. */
+ if (info->shared && rent->type == R_PARISC_FPTR64)
+ {
+ bfd_vma value, value2;
+ asymbol *sym;
+ int elf_index;
+
+ /* First compute the address of the opd entry for this symbol. */
+ value = (dyn_h->opd_offset
+ + hppa_info->opd_sec->output_section->vma
+ + hppa_info->opd_sec->output_offset);
+
+ /* Compute the value of the start of the section with
+ the relocation. */
+ value2 = (rent->sec->output_section->vma
+ + rent->sec->output_offset);
+
+ /* Compute the difference between the start of the section
+ with the relocation and the opd entry. */
+ value -= value2;
+
+ /* The result becomes the addend of the relocation. */
+ rel.r_addend = value;
+
+ /* The section symbol becomes the symbol for the dynamic
+ relocation. */
+ dynindx
+ = _bfd_elf_link_lookup_local_dynindx (info,
+ rent->sec->owner,
+ rent->sec_symndx);
+ }
+ else
+ rel.r_addend = rent->addend;
+
+ rel.r_info = ELF64_R_INFO (dynindx, rent->type);
+
+ bfd_elf64_swap_reloca_out (hppa_info->other_rel_sec->output_section->owner,
+ &rel,
+ (((Elf64_External_Rela *)
+ hppa_info->other_rel_sec->contents)
+ + hppa_info->other_rel_sec->reloc_count));
+ hppa_info->other_rel_sec->reloc_count++;
+ }
+ }
+
+ return true;
+}
+
+/* Finish up the dynamic sections. */
+
+static boolean
+elf64_hppa_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *sdyn;
+ struct elf64_hppa_link_hash_table *hppa_info;
+
+ hppa_info = elf64_hppa_hash_table (info);
+
+ /* Finalize the contents of the .opd section. */
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ elf64_hppa_finalize_opd,
+ info);
+
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ elf64_hppa_finalize_dynreloc,
+ info);
+
+ /* Finalize the contents of the .dlt section. */
+ dynobj = elf_hash_table (info)->dynobj;
+ /* Finalize the contents of the .dlt section. */
+ elf64_hppa_dyn_hash_traverse (&hppa_info->dyn_hash_table,
+ elf64_hppa_finalize_dlt,
+ info);
+
+
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ Elf64_External_Dyn *dyncon, *dynconend;
+ struct elf_link_hash_entry *h;
+
+ BFD_ASSERT (sdyn != NULL);
+
+ dyncon = (Elf64_External_Dyn *) sdyn->contents;
+ dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ asection *s;
+
+ bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ break;
+
+ case DT_HP_LOAD_MAP:
+ /* Compute the absolute address of 16byte scratchpad area
+ for the dynamic linker.
+
+ By convention the linker script will allocate the scratchpad
+ area at the start of the .data section. So all we have to
+ to is find the start of the .data section. */
+ s = bfd_get_section_by_name (output_bfd, ".data");
+ dyn.d_un.d_ptr = s->vma;
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_PLTGOT:
+ /* HP's use PLTGOT to set the GOT register. */
+ dyn.d_un.d_ptr = _bfd_get_gp_value (output_bfd);
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_JMPREL:
+ s = hppa_info->plt_rel_sec;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_PLTRELSZ:
+ s = hppa_info->plt_rel_sec;
+ dyn.d_un.d_val = s->_raw_size;
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_RELA:
+ s = hppa_info->other_rel_sec;
+ if (! s)
+ s = hppa_info->dlt_rel_sec;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_RELASZ:
+ s = hppa_info->other_rel_sec;
+ dyn.d_un.d_val = s->_raw_size;
+ s = hppa_info->dlt_rel_sec;
+ dyn.d_un.d_val += s->_raw_size;
+ s = hppa_info->opd_rel_sec;
+ dyn.d_un.d_val += s->_raw_size;
+ /* There is some question about whether or not the size of
+ the PLT relocs should be included here. HP's tools do
+ it, so we'll emulate them. */
+ s = hppa_info->plt_rel_sec;
+ dyn.d_un.d_val += s->_raw_size;
+ bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ }
+ }
+ }
+
+ return true;
+}
+
+
+/* Return the number of additional phdrs we will need.
+
+ The generic ELF code only creates PT_PHDRs for executables. The HP
+ dynamic linker requires PT_PHDRs for dynamic libraries too.
+
+ This routine indicates that the backend needs one additional program
+ header for that case.
+
+ Note we do not have access to the link info structure here, so we have
+ to guess whether or not we are building a shared library based on the
+ existence of a .interp section. */
+
+static int
+elf64_hppa_additional_program_headers (abfd)
+ bfd *abfd;
+{
+ asection *s;
+
+ /* If we are creating a shared library, then we have to create a
+ PT_PHDR segment. HP's dynamic linker chokes without it. */
+ s = bfd_get_section_by_name (abfd, ".interp");
+ if (! s)
+ return 1;
+ return 0;
+}
+
+/* Allocate and initialize any program headers required by this
+ specific backend.
+
+ The generic ELF code only creates PT_PHDRs for executables. The HP
+ dynamic linker requires PT_PHDRs for dynamic libraries too.
+
+ This allocates the PT_PHDR and initializes it in a manner suitable
+ for the HP linker.
+
+ Note we do not have access to the link info structure here, so we have
+ to guess whether or not we are building a shared library based on the
+ existence of a .interp section. */
+
+static boolean
+elf64_hppa_modify_segment_map (abfd)
+ bfd *abfd;
+{
+ struct elf_segment_map *m, **pm;
+ asection *s;
+
+ s = bfd_get_section_by_name (abfd, ".interp");
+ if (! s)
+ {
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ if (m->p_type == PT_PHDR)
+ break;
+ if (m == NULL)
+ {
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
+ if (m == NULL)
+ return false;
+
+ m->p_type = PT_PHDR;
+ m->p_flags = PF_R | PF_X;
+ m->p_flags_valid = 1;
+ m->p_paddr_valid = 1;
+ m->includes_phdrs = 1;
+
+ m->next = elf_tdata (abfd)->segment_map;
+ elf_tdata (abfd)->segment_map = m;
+ }
+ }
+
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ if (m->p_type == PT_LOAD)
+ {
+ int i;
+
+ for (i = 0; i < m->count; i++)
+ {
+ /* The code "hint" is not really a hint. It is a requirement
+ for certain versions of the HP dynamic linker. Worse yet,
+ it must be set even if the shared library does not have
+ any code in its "text" segment (thus the check for .hash
+ to catch this situation). */
+ if (m->sections[i]->flags & SEC_CODE
+ || (strcmp (m->sections[i]->name, ".hash") == 0))
+ m->p_flags |= (PF_X | PF_HP_CODE);
+ }
+ }
+
+ return true;
+}
+
+/* The hash bucket size is the standard one, namely 4. */
+
+const struct elf_size_info hppa64_elf_size_info =
+{
+ sizeof (Elf64_External_Ehdr),
+ sizeof (Elf64_External_Phdr),
+ sizeof (Elf64_External_Shdr),
+ sizeof (Elf64_External_Rel),
+ sizeof (Elf64_External_Rela),
+ sizeof (Elf64_External_Sym),
+ sizeof (Elf64_External_Dyn),
+ sizeof (Elf_External_Note),
+ 4,
+ 1,
+ 64, 8,
+ ELFCLASS64, EV_CURRENT,
+ bfd_elf64_write_out_phdrs,
+ bfd_elf64_write_shdrs_and_ehdr,
+ bfd_elf64_write_relocs,
+ bfd_elf64_swap_symbol_out,
+ bfd_elf64_slurp_reloc_table,
+ bfd_elf64_slurp_symbol_table,
+ bfd_elf64_swap_dyn_in,
+ bfd_elf64_swap_dyn_out,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+#define TARGET_BIG_SYM bfd_elf64_hppa_vec
+#define TARGET_BIG_NAME "elf64-hppa"
+#define ELF_ARCH bfd_arch_hppa
+#define ELF_MACHINE_CODE EM_PARISC
+/* This is not strictly correct. The maximum page size for PA2.0 is
+ 64M. But everything still uses 4k. */
+#define ELF_MAXPAGESIZE 0x1000
+#define bfd_elf64_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
+#define bfd_elf64_bfd_is_local_label_name elf_hppa_is_local_label_name
+#define elf_info_to_howto elf_hppa_info_to_howto
+#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
+
+#define elf_backend_section_from_shdr elf64_hppa_section_from_shdr
+#define elf_backend_object_p elf64_hppa_object_p
+#define elf_backend_final_write_processing \
+ elf_hppa_final_write_processing
+#define elf_backend_fake_sections elf_hppa_fake_sections
+#define elf_backend_add_symbol_hook elf_hppa_add_symbol_hook
+
+#define elf_backend_relocate_section elf_hppa_relocate_section
+
+#define bfd_elf64_bfd_final_link elf_hppa_final_link
+
+#define elf_backend_create_dynamic_sections \
+ elf64_hppa_create_dynamic_sections
+#define elf_backend_post_process_headers elf64_hppa_post_process_headers
+
+#define elf_backend_adjust_dynamic_symbol \
+ elf64_hppa_adjust_dynamic_symbol
+
+#define elf_backend_size_dynamic_sections \
+ elf64_hppa_size_dynamic_sections
+
+#define elf_backend_finish_dynamic_symbol \
+ elf64_hppa_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ elf64_hppa_finish_dynamic_sections
+
+/* Stuff for the BFD linker: */
+#define bfd_elf64_bfd_link_hash_table_create \
+ elf64_hppa_hash_table_create
+
+#define elf_backend_check_relocs \
+ elf64_hppa_check_relocs
+
+#define elf_backend_size_info \
+ hppa64_elf_size_info
+
+#define elf_backend_additional_program_headers \
+ elf64_hppa_additional_program_headers
+
+#define elf_backend_modify_segment_map \
+ elf64_hppa_modify_segment_map
+
+#define elf_backend_link_output_symbol_hook \
+ elf64_hppa_link_output_symbol_hook
+
+
+#define elf_backend_want_got_plt 0
+#define elf_backend_plt_readonly 0
+#define elf_backend_want_plt_sym 0
+#define elf_backend_got_header_size 0
+#define elf_backend_plt_header_size 0
+#define elf_backend_type_change_ok true
+
+#include "elf64-target.h"
projects / external / binutils.git / commitdiff