1999-05-03 09:29:11 +02:00
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/* BFD back-end for HP PA-RISC ELF files.
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1999-07-12 09:35:20 +02:00
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Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999
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1999-05-03 09:29:11 +02:00
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Free Software Foundation, Inc.
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Written by
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Center for Software Science
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Department of Computer Science
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University of Utah
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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1999-06-22 14:20:30 +02:00
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#include "elf/hppa.h"
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#include "libhppa.h"
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#include "elf32-hppa.h"
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#define ARCH_SIZE 32
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#include "elf-hppa.h"
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1999-05-03 09:29:11 +02:00
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/* We use three different hash tables to hold information for
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linking PA ELF objects.
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The first is the elf32_hppa_link_hash_table which is derived
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from the standard ELF linker hash table. We use this as a place to
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attach other hash tables and static information.
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The second is the stub hash table which is derived from the
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base BFD hash table. The stub hash table holds the information
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1999-06-24 22:01:44 +02:00
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necessary to build the linker stubs during a link. */
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1999-05-03 09:29:11 +02:00
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/* Hash table for linker stubs. */
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struct elf32_hppa_stub_hash_entry
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{
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/* Base hash table entry structure, we can get the name of the stub
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(and thus know exactly what actions it performs) from the base
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hash table entry. */
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struct bfd_hash_entry root;
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/* Offset of the beginning of this stub. */
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bfd_vma offset;
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/* Given the symbol's value and its section we can determine its final
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value when building the stubs (so the stub knows where to jump. */
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symvalue target_value;
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asection *target_section;
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};
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struct elf32_hppa_stub_hash_table
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{
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/* The hash table itself. */
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struct bfd_hash_table root;
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/* The stub BFD. */
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bfd *stub_bfd;
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/* Where to place the next stub. */
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bfd_byte *location;
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/* Current offset in the stub section. */
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unsigned int offset;
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};
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struct elf32_hppa_link_hash_entry
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{
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struct elf_link_hash_entry root;
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};
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struct elf32_hppa_link_hash_table
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{
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/* The main hash table. */
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struct elf_link_hash_table root;
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/* The stub hash table. */
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struct elf32_hppa_stub_hash_table *stub_hash_table;
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/* A count of the number of output symbols. */
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unsigned int output_symbol_count;
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/* Stuff so we can handle DP relative relocations. */
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long global_value;
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int global_sym_defined;
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};
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/* ELF32/HPPA relocation support
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This file contains ELF32/HPPA relocation support as specified
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in the Stratus FTX/Golf Object File Format (SED-1762) dated
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February 1994. */
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#include "elf32-hppa.h"
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#include "hppa_stubs.h"
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static unsigned long hppa_elf_relocate_insn
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PARAMS ((bfd *, asection *, unsigned long, unsigned long, long,
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long, unsigned long, unsigned long, unsigned long));
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static boolean elf32_hppa_add_symbol_hook
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PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
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const char **, flagword *, asection **, bfd_vma *));
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static bfd_reloc_status_type elf32_hppa_bfd_final_link_relocate
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PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *,
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bfd_byte *, bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *,
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asection *, const char *, int));
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static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
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PARAMS ((bfd *));
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static struct bfd_hash_entry *
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elf32_hppa_stub_hash_newfunc
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PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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static boolean
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elf32_hppa_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
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bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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static boolean
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elf32_hppa_stub_hash_table_init
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PARAMS ((struct elf32_hppa_stub_hash_table *, bfd *,
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struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *,
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struct bfd_hash_table *,
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const char *))));
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static boolean
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elf32_hppa_build_one_stub PARAMS ((struct bfd_hash_entry *, PTR));
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static unsigned int elf32_hppa_size_of_stub
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1999-06-24 22:01:44 +02:00
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PARAMS ((bfd_vma, bfd_vma, const char *));
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1999-05-03 09:29:11 +02:00
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static void elf32_hppa_name_of_stub
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1999-06-24 22:01:44 +02:00
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PARAMS ((bfd_vma, bfd_vma, char *));
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1999-05-03 09:29:11 +02:00
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/* For linker stub hash tables. */
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#define elf32_hppa_stub_hash_lookup(table, string, create, copy) \
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((struct elf32_hppa_stub_hash_entry *) \
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bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
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#define elf32_hppa_stub_hash_traverse(table, func, info) \
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(bfd_hash_traverse \
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(&(table)->root, \
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(boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \
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(info)))
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/* For HPPA linker hash table. */
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#define elf32_hppa_link_hash_lookup(table, string, create, copy, follow)\
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((struct elf32_hppa_link_hash_entry *) \
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elf_link_hash_lookup (&(table)->root, (string), (create), \
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(copy), (follow)))
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#define elf32_hppa_link_hash_traverse(table, func, info) \
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(elf_link_hash_traverse \
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(&(table)->root, \
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(boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
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(info)))
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/* Get the PA ELF linker hash table from a link_info structure. */
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#define elf32_hppa_hash_table(p) \
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((struct elf32_hppa_link_hash_table *) ((p)->hash))
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/* Assorted hash table functions. */
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/* Initialize an entry in the stub hash table. */
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static struct bfd_hash_entry *
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elf32_hppa_stub_hash_newfunc (entry, table, string)
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struct bfd_hash_entry *entry;
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struct bfd_hash_table *table;
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const char *string;
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{
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struct elf32_hppa_stub_hash_entry *ret;
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ret = (struct elf32_hppa_stub_hash_entry *) entry;
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/* Allocate the structure if it has not already been allocated by a
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subclass. */
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if (ret == NULL)
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ret = ((struct elf32_hppa_stub_hash_entry *)
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bfd_hash_allocate (table,
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sizeof (struct elf32_hppa_stub_hash_entry)));
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if (ret == NULL)
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return NULL;
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/* Call the allocation method of the superclass. */
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ret = ((struct elf32_hppa_stub_hash_entry *)
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bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
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if (ret)
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{
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/* Initialize the local fields. */
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ret->offset = 0;
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ret->target_value = 0;
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ret->target_section = NULL;
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}
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return (struct bfd_hash_entry *) ret;
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}
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/* Initialize a stub hash table. */
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static boolean
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elf32_hppa_stub_hash_table_init (table, stub_bfd, newfunc)
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struct elf32_hppa_stub_hash_table *table;
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bfd *stub_bfd;
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struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
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struct bfd_hash_table *,
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const char *));
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{
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table->offset = 0;
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table->location = 0;
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table->stub_bfd = stub_bfd;
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return (bfd_hash_table_init (&table->root, newfunc));
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}
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/* Create the derived linker hash table. The PA ELF port uses the derived
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hash table to keep information specific to the PA ELF linker (without
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using static variables). */
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static struct bfd_link_hash_table *
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elf32_hppa_link_hash_table_create (abfd)
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bfd *abfd;
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{
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struct elf32_hppa_link_hash_table *ret;
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ret = ((struct elf32_hppa_link_hash_table *)
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bfd_alloc (abfd, sizeof (struct elf32_hppa_link_hash_table)));
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if (ret == NULL)
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return NULL;
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if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
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_bfd_elf_link_hash_newfunc))
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{
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bfd_release (abfd, ret);
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return NULL;
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}
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ret->stub_hash_table = NULL;
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ret->output_symbol_count = 0;
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ret->global_value = 0;
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ret->global_sym_defined = 0;
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return &ret->root.root;
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}
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/* Relocate the given INSN given the various input parameters.
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FIXME: endianness and sizeof (long) issues abound here. */
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static unsigned long
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hppa_elf_relocate_insn (abfd, input_sect, insn, address, sym_value,
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r_addend, r_format, r_field, pcrel)
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bfd *abfd;
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asection *input_sect;
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unsigned long insn;
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unsigned long address;
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long sym_value;
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long r_addend;
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unsigned long r_format;
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unsigned long r_field;
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unsigned long pcrel;
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{
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unsigned char opcode = get_opcode (insn);
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long constant_value;
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switch (opcode)
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{
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case LDO:
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case LDB:
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case LDH:
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case LDW:
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case LDWM:
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case STB:
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case STH:
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case STW:
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case STWM:
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case COMICLR:
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case SUBI:
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case ADDIT:
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case ADDI:
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case LDIL:
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case ADDIL:
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constant_value = HPPA_R_CONSTANT (r_addend);
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if (pcrel)
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sym_value -= address;
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sym_value = hppa_field_adjust (sym_value, constant_value, r_field);
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return hppa_rebuild_insn (abfd, insn, sym_value, r_format);
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case BL:
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case BE:
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case BLE:
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/* XXX computing constant_value is not needed??? */
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constant_value = assemble_17 ((insn & 0x001f0000) >> 16,
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(insn & 0x00001ffc) >> 2,
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insn & 1);
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constant_value = (constant_value << 15) >> 15;
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if (pcrel)
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{
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sym_value -=
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address + input_sect->output_offset
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+ input_sect->output_section->vma;
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sym_value = hppa_field_adjust (sym_value, -8, r_field);
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}
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else
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sym_value = hppa_field_adjust (sym_value, constant_value, r_field);
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return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format);
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default:
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if (opcode == 0)
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{
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constant_value = HPPA_R_CONSTANT (r_addend);
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if (pcrel)
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sym_value -= address;
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return hppa_field_adjust (sym_value, constant_value, r_field);
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}
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else
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abort ();
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}
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}
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/* Relocate an HPPA ELF section. */
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static boolean
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elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
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contents, relocs, local_syms, local_sections)
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bfd *output_bfd;
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struct bfd_link_info *info;
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bfd *input_bfd;
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asection *input_section;
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bfd_byte *contents;
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Elf_Internal_Rela *relocs;
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Elf_Internal_Sym *local_syms;
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asection **local_sections;
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{
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Elf_Internal_Shdr *symtab_hdr;
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Elf_Internal_Rela *rel;
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Elf_Internal_Rela *relend;
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symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
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rel = relocs;
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relend = relocs + input_section->reloc_count;
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for (; rel < relend; rel++)
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|
{
|
|
|
|
int r_type;
|
|
|
|
reloc_howto_type *howto;
|
|
|
|
unsigned long r_symndx;
|
|
|
|
struct elf_link_hash_entry *h;
|
|
|
|
Elf_Internal_Sym *sym;
|
|
|
|
asection *sym_sec;
|
|
|
|
bfd_vma relocation;
|
|
|
|
bfd_reloc_status_type r;
|
|
|
|
const char *sym_name;
|
|
|
|
|
|
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
|
|
|
if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED)
|
|
|
|
{
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
howto = elf_hppa_howto_table + r_type;
|
|
|
|
|
|
|
|
r_symndx = ELF32_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;
|
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
|
|
{
|
|
|
|
sym = local_syms + r_symndx;
|
|
|
|
sym_sec = local_sections[r_symndx];
|
|
|
|
relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
|
|
|
|
? 0 : sym->st_value)
|
|
|
|
+ sym_sec->output_offset
|
|
|
|
+ sym_sec->output_section->vma);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
long indx;
|
|
|
|
|
|
|
|
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;
|
|
|
|
if (h->root.type == bfd_link_hash_defined
|
|
|
|
|| h->root.type == bfd_link_hash_defweak)
|
|
|
|
{
|
|
|
|
sym_sec = h->root.u.def.section;
|
|
|
|
relocation = (h->root.u.def.value
|
|
|
|
+ sym_sec->output_offset
|
|
|
|
+ sym_sec->output_section->vma);
|
|
|
|
}
|
|
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
|
|
|
relocation = 0;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (!((*info->callbacks->undefined_symbol)
|
|
|
|
(info, h->root.root.string, input_bfd,
|
|
|
|
input_section, rel->r_offset)))
|
|
|
|
return false;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (h != NULL)
|
|
|
|
sym_name = h->root.root.string;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
sym_name = bfd_elf_string_from_elf_section (input_bfd,
|
|
|
|
symtab_hdr->sh_link,
|
|
|
|
sym->st_name);
|
|
|
|
if (sym_name == NULL)
|
|
|
|
return false;
|
|
|
|
if (*sym_name == '\0')
|
|
|
|
sym_name = bfd_section_name (input_bfd, sym_sec);
|
|
|
|
}
|
|
|
|
|
|
|
|
r = elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd,
|
|
|
|
input_section, contents,
|
|
|
|
rel->r_offset, relocation,
|
|
|
|
rel->r_addend, info, sym_sec,
|
|
|
|
sym_name, h == NULL);
|
|
|
|
|
|
|
|
if (r != bfd_reloc_ok)
|
|
|
|
{
|
|
|
|
switch (r)
|
|
|
|
{
|
|
|
|
/* This can happen for DP relative relocs if $global$ is
|
|
|
|
undefined. This is a panic situation so we don't try
|
|
|
|
to continue. */
|
|
|
|
case bfd_reloc_undefined:
|
|
|
|
case bfd_reloc_notsupported:
|
|
|
|
if (!((*info->callbacks->undefined_symbol)
|
|
|
|
(info, "$global$", input_bfd,
|
|
|
|
input_section, rel->r_offset)))
|
|
|
|
return false;
|
|
|
|
return false;
|
|
|
|
case bfd_reloc_dangerous:
|
|
|
|
{
|
|
|
|
/* We use this return value to indicate that we performed
|
|
|
|
a "dangerous" relocation. This doesn't mean we did
|
|
|
|
the wrong thing, it just means there may be some cleanup
|
|
|
|
that needs to be done here.
|
|
|
|
|
|
|
|
In particular we had to swap the last call insn and its
|
|
|
|
delay slot. If the delay slot insn needed a relocation,
|
|
|
|
then we'll need to adjust the next relocation entry's
|
|
|
|
offset to account for the fact that the insn moved.
|
|
|
|
|
|
|
|
This hair wouldn't be necessary if we inserted stubs
|
|
|
|
between procedures and used a "bl" to get to the stub. */
|
|
|
|
if (rel != relend)
|
|
|
|
{
|
|
|
|
Elf_Internal_Rela *next_rel = rel + 1;
|
|
|
|
|
|
|
|
if (rel->r_offset + 4 == next_rel->r_offset)
|
|
|
|
next_rel->r_offset -= 4;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
case bfd_reloc_outofrange:
|
|
|
|
case bfd_reloc_overflow:
|
|
|
|
{
|
|
|
|
if (!((*info->callbacks->reloc_overflow)
|
|
|
|
(info, sym_name, howto->name, (bfd_vma) 0,
|
|
|
|
input_bfd, input_section, rel->r_offset)))
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Actually perform a relocation as part of a final link. This can get
|
|
|
|
rather hairy when linker stubs are needed. */
|
|
|
|
|
|
|
|
static bfd_reloc_status_type
|
|
|
|
elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd,
|
|
|
|
input_section, contents, offset, value,
|
|
|
|
addend, info, sym_sec, sym_name, is_local)
|
|
|
|
reloc_howto_type *howto;
|
|
|
|
bfd *input_bfd;
|
1999-07-12 12:30:21 +02:00
|
|
|
bfd *output_bfd ATTRIBUTE_UNUSED;
|
1999-05-03 09:29:11 +02:00
|
|
|
asection *input_section;
|
|
|
|
bfd_byte *contents;
|
|
|
|
bfd_vma offset;
|
|
|
|
bfd_vma value;
|
|
|
|
bfd_vma addend;
|
|
|
|
struct bfd_link_info *info;
|
|
|
|
asection *sym_sec;
|
|
|
|
const char *sym_name;
|
|
|
|
int is_local;
|
|
|
|
{
|
|
|
|
unsigned long insn;
|
|
|
|
unsigned long r_type = howto->type;
|
|
|
|
unsigned long r_format = howto->bitsize;
|
|
|
|
unsigned long r_field = e_fsel;
|
|
|
|
bfd_byte *hit_data = contents + offset;
|
|
|
|
boolean r_pcrel = howto->pc_relative;
|
|
|
|
|
|
|
|
insn = bfd_get_32 (input_bfd, hit_data);
|
|
|
|
|
|
|
|
/* Make sure we have a value for $global$. FIXME isn't this effectively
|
|
|
|
just like the gp pointer on MIPS? Can we use those routines for this
|
|
|
|
purpose? */
|
|
|
|
if (!elf32_hppa_hash_table (info)->global_sym_defined)
|
|
|
|
{
|
|
|
|
struct elf_link_hash_entry *h;
|
|
|
|
asection *sec;
|
|
|
|
|
|
|
|
h = elf_link_hash_lookup (elf_hash_table (info), "$global$", false,
|
|
|
|
false, false);
|
|
|
|
|
|
|
|
/* If there isn't a $global$, then we're in deep trouble. */
|
|
|
|
if (h == NULL)
|
|
|
|
return bfd_reloc_notsupported;
|
|
|
|
|
|
|
|
/* If $global$ isn't a defined symbol, then we're still in deep
|
|
|
|
trouble. */
|
|
|
|
if (h->root.type != bfd_link_hash_defined)
|
|
|
|
return bfd_reloc_undefined;
|
|
|
|
|
|
|
|
sec = h->root.u.def.section;
|
|
|
|
elf32_hppa_hash_table (info)->global_value = (h->root.u.def.value
|
|
|
|
+ sec->output_section->vma
|
|
|
|
+ sec->output_offset);
|
|
|
|
elf32_hppa_hash_table (info)->global_sym_defined = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (r_type)
|
|
|
|
{
|
|
|
|
case R_PARISC_NONE:
|
|
|
|
break;
|
|
|
|
|
|
|
|
case R_PARISC_DIR32:
|
|
|
|
case R_PARISC_DIR17F:
|
|
|
|
case R_PARISC_PCREL17C:
|
|
|
|
r_field = e_fsel;
|
|
|
|
goto do_basic_type_1;
|
|
|
|
case R_PARISC_DIR21L:
|
|
|
|
case R_PARISC_PCREL21L:
|
|
|
|
r_field = e_lrsel;
|
|
|
|
goto do_basic_type_1;
|
|
|
|
case R_PARISC_DIR17R:
|
|
|
|
case R_PARISC_PCREL17R:
|
|
|
|
case R_PARISC_DIR14R:
|
|
|
|
case R_PARISC_PCREL14R:
|
|
|
|
r_field = e_rrsel;
|
|
|
|
goto do_basic_type_1;
|
|
|
|
|
|
|
|
/* For all the DP relative relocations, we need to examine the symbol's
|
|
|
|
section. If it's a code section, then "data pointer relative" makes
|
|
|
|
no sense. In that case we don't adjust the "value", and for 21 bit
|
|
|
|
addil instructions, we change the source addend register from %dp to
|
|
|
|
%r0. */
|
|
|
|
case R_PARISC_DPREL21L:
|
|
|
|
r_field = e_lrsel;
|
|
|
|
if (sym_sec->flags & SEC_CODE)
|
|
|
|
{
|
|
|
|
if ((insn & 0xfc000000) >> 26 == 0xa
|
|
|
|
&& (insn & 0x03e00000) >> 21 == 0x1b)
|
|
|
|
insn &= ~0x03e00000;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
value -= elf32_hppa_hash_table (info)->global_value;
|
|
|
|
goto do_basic_type_1;
|
|
|
|
case R_PARISC_DPREL14R:
|
|
|
|
r_field = e_rrsel;
|
|
|
|
if ((sym_sec->flags & SEC_CODE) == 0)
|
|
|
|
value -= elf32_hppa_hash_table (info)->global_value;
|
|
|
|
goto do_basic_type_1;
|
|
|
|
case R_PARISC_DPREL14F:
|
|
|
|
r_field = e_fsel;
|
|
|
|
if ((sym_sec->flags & SEC_CODE) == 0)
|
|
|
|
value -= elf32_hppa_hash_table (info)->global_value;
|
|
|
|
goto do_basic_type_1;
|
|
|
|
|
|
|
|
/* These cases are separate as they may involve a lot more work
|
|
|
|
to deal with linker stubs. */
|
|
|
|
case R_PARISC_PLABEL32:
|
|
|
|
case R_PARISC_PLABEL21L:
|
|
|
|
case R_PARISC_PLABEL14R:
|
|
|
|
case R_PARISC_PCREL17F:
|
|
|
|
{
|
|
|
|
bfd_vma location;
|
1999-07-12 09:35:20 +02:00
|
|
|
unsigned int len;
|
1999-05-03 09:29:11 +02:00
|
|
|
char *new_name, *stub_name;
|
|
|
|
|
|
|
|
/* Get the field selector right. We'll need it in a minute. */
|
|
|
|
if (r_type == R_PARISC_PCREL17F
|
|
|
|
|| r_type == R_PARISC_PLABEL32)
|
|
|
|
r_field = e_fsel;
|
|
|
|
else if (r_type == R_PARISC_PLABEL21L)
|
|
|
|
r_field = e_lrsel;
|
|
|
|
else if (r_type == R_PARISC_PLABEL14R)
|
|
|
|
r_field = e_rrsel;
|
|
|
|
|
|
|
|
/* Find out where we are and where we're going. */
|
|
|
|
location = (offset +
|
|
|
|
input_section->output_offset +
|
|
|
|
input_section->output_section->vma);
|
|
|
|
|
|
|
|
len = strlen (sym_name) + 1;
|
|
|
|
if (is_local)
|
|
|
|
len += 9;
|
|
|
|
new_name = bfd_malloc (len);
|
|
|
|
if (!new_name)
|
|
|
|
return bfd_reloc_notsupported;
|
|
|
|
strcpy (new_name, sym_name);
|
|
|
|
|
|
|
|
/* Local symbols have unique IDs. */
|
|
|
|
if (is_local)
|
|
|
|
sprintf (new_name + len - 10, "_%08x", (int)sym_sec);
|
|
|
|
|
|
|
|
/* Any kind of linker stub needed? */
|
|
|
|
if (((int)(value - location) > 0x3ffff)
|
1999-06-24 22:01:44 +02:00
|
|
|
|| ((int)(value - location) < (int)0xfffc0000))
|
1999-05-03 09:29:11 +02:00
|
|
|
{
|
|
|
|
struct elf32_hppa_stub_hash_table *stub_hash_table;
|
|
|
|
struct elf32_hppa_stub_hash_entry *stub_hash;
|
|
|
|
asection *stub_section;
|
|
|
|
|
|
|
|
/* Build a name for the stub. */
|
|
|
|
|
|
|
|
len = strlen (new_name);
|
|
|
|
len += 23;
|
|
|
|
stub_name = bfd_malloc (len);
|
|
|
|
if (!stub_name)
|
|
|
|
return bfd_reloc_notsupported;
|
1999-06-24 22:01:44 +02:00
|
|
|
elf32_hppa_name_of_stub (location, value, stub_name);
|
1999-05-03 09:29:11 +02:00
|
|
|
strcat (stub_name, new_name);
|
|
|
|
free (new_name);
|
|
|
|
|
|
|
|
stub_hash_table = elf32_hppa_hash_table (info)->stub_hash_table;
|
|
|
|
|
|
|
|
stub_hash
|
|
|
|
= elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name,
|
|
|
|
false, false);
|
|
|
|
|
|
|
|
/* We're done with that name. */
|
|
|
|
free (stub_name);
|
|
|
|
|
|
|
|
/* The stub BFD only has one section. */
|
|
|
|
stub_section = stub_hash_table->stub_bfd->sections;
|
|
|
|
|
|
|
|
if (stub_hash != NULL)
|
|
|
|
{
|
|
|
|
if (r_type == R_PARISC_PCREL17F)
|
|
|
|
{
|
|
|
|
unsigned long delay_insn;
|
|
|
|
unsigned int opcode, rtn_reg, ldo_target_reg, ldo_src_reg;
|
|
|
|
|
|
|
|
/* We'll need to peek at the next insn. */
|
|
|
|
delay_insn = bfd_get_32 (input_bfd, hit_data + 4);
|
|
|
|
opcode = get_opcode (delay_insn);
|
|
|
|
|
|
|
|
/* We also need to know the return register for this
|
|
|
|
call. */
|
|
|
|
rtn_reg = (insn & 0x03e00000) >> 21;
|
|
|
|
|
|
|
|
ldo_src_reg = (delay_insn & 0x03e00000) >> 21;
|
|
|
|
ldo_target_reg = (delay_insn & 0x001f0000) >> 16;
|
|
|
|
|
|
|
|
/* Munge up the value and other parameters for
|
|
|
|
hppa_elf_relocate_insn. */
|
|
|
|
|
|
|
|
value = (stub_hash->offset
|
|
|
|
+ stub_section->output_offset
|
|
|
|
+ stub_section->output_section->vma);
|
|
|
|
|
|
|
|
r_format = 17;
|
|
|
|
r_field = e_fsel;
|
|
|
|
r_pcrel = 0;
|
|
|
|
addend = 0;
|
|
|
|
|
|
|
|
/* We need to peek at the delay insn and determine if
|
|
|
|
we'll need to swap the branch and its delay insn. */
|
|
|
|
if ((insn & 2)
|
|
|
|
|| (opcode == LDO
|
|
|
|
&& ldo_target_reg == rtn_reg)
|
|
|
|
|| (delay_insn == 0x08000240))
|
|
|
|
{
|
|
|
|
/* No need to swap the branch and its delay slot, but
|
|
|
|
we do need to make sure to jump past the return
|
|
|
|
pointer update in the stub. */
|
|
|
|
value += 4;
|
|
|
|
|
|
|
|
/* If the delay insn does a return pointer adjustment,
|
|
|
|
then we have to make sure it stays valid. */
|
|
|
|
if (opcode == LDO
|
|
|
|
&& ldo_target_reg == rtn_reg)
|
|
|
|
{
|
|
|
|
delay_insn &= 0xfc00ffff;
|
|
|
|
delay_insn |= ((31 << 21) | (31 << 16));
|
|
|
|
bfd_put_32 (input_bfd, delay_insn, hit_data + 4);
|
|
|
|
}
|
|
|
|
/* Use a BLE to reach the stub. */
|
|
|
|
insn = BLE_SR4_R0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Wonderful, we have to swap the call insn and its
|
|
|
|
delay slot. */
|
|
|
|
bfd_put_32 (input_bfd, delay_insn, hit_data);
|
|
|
|
/* Use a BLE,n to reach the stub. */
|
|
|
|
insn = (BLE_SR4_R0 | 0x2);
|
|
|
|
bfd_put_32 (input_bfd, insn, hit_data + 4);
|
|
|
|
insn = hppa_elf_relocate_insn (input_bfd,
|
|
|
|
input_section,
|
|
|
|
insn, offset + 4,
|
|
|
|
value, addend,
|
|
|
|
r_format, r_field,
|
|
|
|
r_pcrel);
|
|
|
|
/* Update the instruction word. */
|
|
|
|
bfd_put_32 (input_bfd, insn, hit_data + 4);
|
|
|
|
return bfd_reloc_dangerous;
|
|
|
|
}
|
|
|
|
}
|
1999-06-24 22:01:44 +02:00
|
|
|
else
|
|
|
|
return bfd_reloc_notsupported;
|
|
|
|
}
|
1999-05-03 09:29:11 +02:00
|
|
|
}
|
|
|
|
goto do_basic_type_1;
|
|
|
|
}
|
|
|
|
|
|
|
|
do_basic_type_1:
|
|
|
|
insn = hppa_elf_relocate_insn (input_bfd, input_section, insn,
|
|
|
|
offset, value, addend, r_format,
|
|
|
|
r_field, r_pcrel);
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* Something we don't know how to handle. */
|
|
|
|
default:
|
|
|
|
return bfd_reloc_notsupported;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Update the instruction word. */
|
|
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
|
|
|
return (bfd_reloc_ok);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Undo the generic ELF code's subtraction of section->vma from the
|
|
|
|
value of each external symbol. */
|
|
|
|
|
|
|
|
static boolean
|
|
|
|
elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
1999-07-12 12:30:21 +02:00
|
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
|
|
|
const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
|
|
|
|
const char **namep ATTRIBUTE_UNUSED;
|
|
|
|
flagword *flagsp ATTRIBUTE_UNUSED;
|
1999-05-03 09:29:11 +02:00
|
|
|
asection **secp;
|
|
|
|
bfd_vma *valp;
|
|
|
|
{
|
|
|
|
*valp += (*secp)->vma;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Determine the name of the stub needed to perform a call assuming the
|
|
|
|
argument relocation bits for caller and callee are in CALLER and CALLEE
|
|
|
|
for a call from LOCATION to DESTINATION. Copy the name into STUB_NAME. */
|
|
|
|
|
|
|
|
static void
|
1999-06-24 22:01:44 +02:00
|
|
|
elf32_hppa_name_of_stub (location, destination, stub_name)
|
1999-07-12 12:30:21 +02:00
|
|
|
bfd_vma location ATTRIBUTE_UNUSED;
|
|
|
|
bfd_vma destination ATTRIBUTE_UNUSED;
|
1999-05-03 09:29:11 +02:00
|
|
|
char *stub_name;
|
|
|
|
{
|
1999-06-24 22:01:44 +02:00
|
|
|
strcpy (stub_name, "_____long_branch_stub_");
|
1999-05-03 09:29:11 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Compute the size of the stub needed to call from LOCATION to DESTINATION
|
|
|
|
(a function named SYM_NAME), with argument relocation bits CALLER and
|
|
|
|
CALLEE. Return zero if no stub is needed to perform such a call. */
|
|
|
|
|
|
|
|
static unsigned int
|
1999-06-24 22:01:44 +02:00
|
|
|
elf32_hppa_size_of_stub (location, destination, sym_name)
|
1999-05-03 09:29:11 +02:00
|
|
|
bfd_vma location, destination;
|
|
|
|
const char *sym_name;
|
|
|
|
{
|
1999-06-24 22:01:44 +02:00
|
|
|
/* Determine if a long branch stub is needed. */
|
1999-05-03 09:29:11 +02:00
|
|
|
if (!(((int)(location - destination) > 0x3ffff)
|
1999-06-24 22:01:44 +02:00
|
|
|
|| ((int)(location - destination) < (int)0xfffc0000)))
|
1999-05-03 09:29:11 +02:00
|
|
|
return 0;
|
|
|
|
|
1999-06-24 22:01:44 +02:00
|
|
|
if (!strncmp ("$$", sym_name, 2)
|
1999-05-03 09:29:11 +02:00
|
|
|
&& strcmp ("$$dyncall", sym_name))
|
|
|
|
return 12;
|
|
|
|
else
|
|
|
|
return 16;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
|
|
|
|
IN_ARGS contains the stub BFD and link info pointers. */
|
|
|
|
|
|
|
|
static boolean
|
|
|
|
elf32_hppa_build_one_stub (gen_entry, in_args)
|
|
|
|
struct bfd_hash_entry *gen_entry;
|
|
|
|
PTR in_args;
|
|
|
|
{
|
|
|
|
void **args = (void **)in_args;
|
|
|
|
bfd *stub_bfd = (bfd *)args[0];
|
|
|
|
struct bfd_link_info *info = (struct bfd_link_info *)args[1];
|
|
|
|
struct elf32_hppa_stub_hash_entry *entry;
|
|
|
|
struct elf32_hppa_stub_hash_table *stub_hash_table;
|
|
|
|
bfd_byte *loc;
|
|
|
|
symvalue sym_value;
|
|
|
|
const char *sym_name;
|
|
|
|
|
|
|
|
/* Initialize pointers to the stub hash table, the particular entry we
|
|
|
|
are building a stub for, and where (in memory) we should place the stub
|
|
|
|
instructions. */
|
|
|
|
entry = (struct elf32_hppa_stub_hash_entry *)gen_entry;
|
|
|
|
stub_hash_table = elf32_hppa_hash_table(info)->stub_hash_table;
|
|
|
|
loc = stub_hash_table->location;
|
|
|
|
|
|
|
|
/* Make a note of the offset within the stubs for this entry. */
|
|
|
|
entry->offset = stub_hash_table->offset;
|
|
|
|
|
|
|
|
/* The symbol's name starts at offset 22. */
|
|
|
|
sym_name = entry->root.string + 22;
|
|
|
|
|
|
|
|
sym_value = (entry->target_value
|
|
|
|
+ entry->target_section->output_offset
|
|
|
|
+ entry->target_section->output_section->vma);
|
|
|
|
|
1999-06-24 22:01:44 +02:00
|
|
|
if (1)
|
1999-05-03 09:29:11 +02:00
|
|
|
{
|
|
|
|
/* Create one of two variant long branch stubs. One for $$dyncall and
|
|
|
|
normal calls, the other for calls to millicode. */
|
|
|
|
unsigned long insn;
|
|
|
|
int millicode_call = 0;
|
|
|
|
|
|
|
|
if (!strncmp ("$$", sym_name, 2) && strcmp ("$$dyncall", sym_name))
|
|
|
|
millicode_call = 1;
|
|
|
|
|
|
|
|
/* First the return pointer adjustment. Depending on exact calling
|
|
|
|
sequence this instruction may be skipped. */
|
|
|
|
bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc);
|
|
|
|
|
|
|
|
/* The next two instructions are the long branch itself. A long branch
|
|
|
|
is formed with "ldil" loading the upper bits of the target address
|
|
|
|
into a register, then branching with "be" which adds in the lower bits.
|
|
|
|
Long branches to millicode nullify the delay slot of the "be". */
|
|
|
|
insn = hppa_rebuild_insn (stub_bfd, LDIL_R1,
|
|
|
|
hppa_field_adjust (sym_value, 0, e_lrsel), 21);
|
|
|
|
bfd_put_32 (stub_bfd, insn, loc + 4);
|
|
|
|
insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1 | (millicode_call ? 2 : 0),
|
|
|
|
hppa_field_adjust (sym_value, 0, e_rrsel) >> 2,
|
|
|
|
17);
|
|
|
|
bfd_put_32 (stub_bfd, insn, loc + 8);
|
|
|
|
|
|
|
|
if (!millicode_call)
|
|
|
|
{
|
|
|
|
/* The sequence to call this stub places the return pointer into %r31,
|
|
|
|
the final target expects the return pointer in %r2, so copy the
|
|
|
|
return pointer into the proper register. */
|
|
|
|
bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 12);
|
|
|
|
|
|
|
|
/* Update the location and offsets. */
|
|
|
|
stub_hash_table->location += 16;
|
|
|
|
stub_hash_table->offset += 16;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Update the location and offsets. */
|
|
|
|
stub_hash_table->location += 12;
|
|
|
|
stub_hash_table->offset += 12;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* External entry points for sizing and building linker stubs. */
|
|
|
|
|
|
|
|
/* Build all the stubs associated with the current output file. The
|
|
|
|
stubs are kept in a hash table attached to the main linker hash
|
|
|
|
table. This is called via hppaelf_finish in the linker. */
|
|
|
|
|
|
|
|
boolean
|
|
|
|
elf32_hppa_build_stubs (stub_bfd, info)
|
|
|
|
bfd *stub_bfd;
|
|
|
|
struct bfd_link_info *info;
|
|
|
|
{
|
|
|
|
/* The stub BFD only has one section. */
|
|
|
|
asection *stub_sec = stub_bfd->sections;
|
|
|
|
struct elf32_hppa_stub_hash_table *table;
|
|
|
|
unsigned int size;
|
|
|
|
void *args[2];
|
|
|
|
|
|
|
|
/* So we can pass both the BFD for the stubs and the link info
|
|
|
|
structure to the routine which actually builds stubs. */
|
|
|
|
args[0] = stub_bfd;
|
|
|
|
args[1] = info;
|
|
|
|
|
|
|
|
/* Allocate memory to hold the linker stubs. */
|
|
|
|
size = bfd_section_size (stub_bfd, stub_sec);
|
|
|
|
stub_sec->contents = (unsigned char *) bfd_zalloc (stub_bfd, size);
|
|
|
|
if (stub_sec->contents == NULL)
|
|
|
|
return false;
|
|
|
|
table = elf32_hppa_hash_table(info)->stub_hash_table;
|
|
|
|
table->location = stub_sec->contents;
|
|
|
|
|
|
|
|
/* Build the stubs as directed by the stub hash table. */
|
|
|
|
elf32_hppa_stub_hash_traverse (table, elf32_hppa_build_one_stub, args);
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Determine and set the size of the stub section for a final link.
|
|
|
|
|
|
|
|
The basic idea here is to examine all the relocations looking for
|
|
|
|
PC-relative calls to a target that is unreachable with a "bl"
|
|
|
|
instruction or calls where the caller and callee disagree on the
|
|
|
|
location of their arguments or return value. */
|
|
|
|
|
|
|
|
boolean
|
|
|
|
elf32_hppa_size_stubs (stub_bfd, output_bfd, link_info)
|
|
|
|
bfd *stub_bfd;
|
1999-07-12 12:30:21 +02:00
|
|
|
bfd *output_bfd ATTRIBUTE_UNUSED;
|
1999-05-03 09:29:11 +02:00
|
|
|
struct bfd_link_info *link_info;
|
|
|
|
{
|
|
|
|
bfd *input_bfd;
|
|
|
|
asection *section, *stub_sec = 0;
|
|
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1999-07-12 09:35:20 +02:00
|
|
|
Elf_Internal_Sym *local_syms, **all_local_syms;
|
1999-05-03 09:29:11 +02:00
|
|
|
unsigned int i, index, bfd_count = 0;
|
|
|
|
struct elf32_hppa_stub_hash_table *stub_hash_table = 0;
|
|
|
|
|
|
|
|
/* Create and initialize the stub hash table. */
|
|
|
|
stub_hash_table = ((struct elf32_hppa_stub_hash_table *)
|
|
|
|
bfd_malloc (sizeof (struct elf32_hppa_stub_hash_table)));
|
|
|
|
if (!stub_hash_table)
|
|
|
|
goto error_return;
|
|
|
|
|
|
|
|
if (!elf32_hppa_stub_hash_table_init (stub_hash_table, stub_bfd,
|
|
|
|
elf32_hppa_stub_hash_newfunc))
|
|
|
|
goto error_return;
|
|
|
|
|
|
|
|
/* Attach the hash tables to the main hash table. */
|
|
|
|
elf32_hppa_hash_table(link_info)->stub_hash_table = stub_hash_table;
|
|
|
|
|
|
|
|
/* Count the number of input BFDs. */
|
|
|
|
for (input_bfd = link_info->input_bfds;
|
|
|
|
input_bfd != NULL;
|
|
|
|
input_bfd = input_bfd->link_next)
|
|
|
|
bfd_count++;
|
|
|
|
|
|
|
|
/* Magic as we know the stub bfd only has one section. */
|
|
|
|
stub_sec = stub_bfd->sections;
|
|
|
|
|
|
|
|
/* If generating a relocateable output file, then we don't
|
|
|
|
have to examine the relocs. */
|
|
|
|
if (link_info->relocateable)
|
|
|
|
{
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now that we have argument location information for all the global
|
|
|
|
functions we can start looking for stubs. */
|
|
|
|
for (input_bfd = link_info->input_bfds, index = 0;
|
|
|
|
input_bfd != NULL;
|
|
|
|
input_bfd = input_bfd->link_next, index++)
|
|
|
|
{
|
|
|
|
/* We'll need the symbol table in a second. */
|
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
|
|
|
if (symtab_hdr->sh_info == 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
local_syms = all_local_syms[index];
|
|
|
|
|
|
|
|
/* Walk over each section attached to the input bfd. */
|
|
|
|
for (section = input_bfd->sections;
|
|
|
|
section != NULL;
|
|
|
|
section = section->next)
|
|
|
|
{
|
|
|
|
Elf_Internal_Shdr *input_rel_hdr;
|
|
|
|
Elf32_External_Rela *external_relocs, *erelaend, *erela;
|
|
|
|
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
|
|
|
|
|
|
|
/* If there aren't any relocs, then there's nothing to do. */
|
|
|
|
if ((section->flags & SEC_RELOC) == 0
|
|
|
|
|| section->reloc_count == 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Allocate space for the external relocations. */
|
|
|
|
external_relocs
|
|
|
|
= ((Elf32_External_Rela *)
|
|
|
|
bfd_malloc (section->reloc_count
|
|
|
|
* sizeof (Elf32_External_Rela)));
|
|
|
|
if (external_relocs == NULL)
|
|
|
|
{
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Likewise for the internal relocations. */
|
|
|
|
internal_relocs
|
|
|
|
= ((Elf_Internal_Rela *)
|
|
|
|
bfd_malloc (section->reloc_count * sizeof (Elf_Internal_Rela)));
|
|
|
|
if (internal_relocs == NULL)
|
|
|
|
{
|
|
|
|
free (external_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Read in the external relocs. */
|
|
|
|
input_rel_hdr = &elf_section_data (section)->rel_hdr;
|
|
|
|
if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
|
|
|
|
|| bfd_read (external_relocs, 1, input_rel_hdr->sh_size,
|
|
|
|
input_bfd) != input_rel_hdr->sh_size)
|
|
|
|
{
|
|
|
|
free (external_relocs);
|
|
|
|
free (internal_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Swap in the relocs. */
|
|
|
|
erela = external_relocs;
|
|
|
|
erelaend = erela + section->reloc_count;
|
|
|
|
irela = internal_relocs;
|
|
|
|
for (; erela < erelaend; erela++, irela++)
|
|
|
|
bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
|
|
|
|
|
|
|
|
/* We're done with the external relocs, free them. */
|
|
|
|
free (external_relocs);
|
|
|
|
|
|
|
|
/* Now examine each relocation. */
|
|
|
|
irela = internal_relocs;
|
|
|
|
irelaend = irela + section->reloc_count;
|
|
|
|
for (; irela < irelaend; irela++)
|
|
|
|
{
|
1999-06-24 22:01:44 +02:00
|
|
|
long r_type, size_of_stub;
|
1999-05-03 09:29:11 +02:00
|
|
|
unsigned long r_index;
|
|
|
|
struct elf_link_hash_entry *hash;
|
|
|
|
struct elf32_hppa_stub_hash_entry *stub_hash;
|
|
|
|
Elf_Internal_Sym *sym;
|
|
|
|
asection *sym_sec;
|
|
|
|
const char *sym_name;
|
|
|
|
symvalue sym_value;
|
|
|
|
bfd_vma location, destination;
|
|
|
|
char *new_name = NULL;
|
|
|
|
|
|
|
|
r_type = ELF32_R_TYPE (irela->r_info);
|
|
|
|
r_index = ELF32_R_SYM (irela->r_info);
|
|
|
|
|
|
|
|
if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED)
|
|
|
|
{
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
|
|
free (internal_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Only look for stubs on call instructions or plabel
|
|
|
|
references. */
|
|
|
|
if (r_type != R_PARISC_PCREL17F
|
|
|
|
&& r_type != R_PARISC_PLABEL32
|
|
|
|
&& r_type != R_PARISC_PLABEL21L
|
|
|
|
&& r_type != R_PARISC_PLABEL14R)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Now determine the call target, its name, value, section
|
|
|
|
and argument relocation bits. */
|
|
|
|
hash = NULL;
|
|
|
|
sym = NULL;
|
|
|
|
sym_sec = NULL;
|
|
|
|
if (r_index < symtab_hdr->sh_info)
|
|
|
|
{
|
|
|
|
/* It's a local symbol. */
|
|
|
|
Elf_Internal_Shdr *hdr;
|
|
|
|
|
|
|
|
sym = local_syms + r_index;
|
|
|
|
hdr = elf_elfsections (input_bfd)[sym->st_shndx];
|
|
|
|
sym_sec = hdr->bfd_section;
|
|
|
|
sym_name = bfd_elf_string_from_elf_section (input_bfd,
|
|
|
|
symtab_hdr->sh_link,
|
|
|
|
sym->st_name);
|
|
|
|
sym_value = (ELF_ST_TYPE (sym->st_info) == STT_SECTION
|
|
|
|
? 0 : sym->st_value);
|
|
|
|
destination = (sym_value
|
|
|
|
+ sym_sec->output_offset
|
|
|
|
+ sym_sec->output_section->vma);
|
|
|
|
|
|
|
|
/* Tack on an ID so we can uniquely identify this local
|
|
|
|
symbol in the stub or arg info hash tables. */
|
|
|
|
new_name = bfd_malloc (strlen (sym_name) + 10);
|
|
|
|
if (new_name == 0)
|
|
|
|
{
|
|
|
|
free (internal_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec);
|
|
|
|
sym_name = new_name;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* It's an external symbol. */
|
|
|
|
long index;
|
|
|
|
|
|
|
|
index = r_index - symtab_hdr->sh_info;
|
|
|
|
hash = elf_sym_hashes (input_bfd)[index];
|
|
|
|
if (hash->root.type == bfd_link_hash_defined
|
|
|
|
|| hash->root.type == bfd_link_hash_defweak)
|
|
|
|
{
|
|
|
|
sym_sec = hash->root.u.def.section;
|
|
|
|
sym_name = hash->root.root.string;
|
|
|
|
sym_value = hash->root.u.def.value;
|
|
|
|
destination = (sym_value
|
|
|
|
+ sym_sec->output_offset
|
|
|
|
+ sym_sec->output_section->vma);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
|
|
free (internal_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now determine where the call point is. */
|
|
|
|
location = (section->output_offset
|
|
|
|
+ section->output_section->vma
|
|
|
|
+ irela->r_offset);
|
|
|
|
|
|
|
|
/* We only care about the destination for PCREL function
|
|
|
|
calls (eg. we don't care for PLABELS). */
|
|
|
|
if (r_type != R_PARISC_PCREL17F)
|
|
|
|
location = destination;
|
|
|
|
|
|
|
|
/* Determine what (if any) linker stub is needed and its
|
|
|
|
size (in bytes). */
|
1999-06-24 22:01:44 +02:00
|
|
|
size_of_stub = elf32_hppa_size_of_stub (location,
|
1999-05-03 09:29:11 +02:00
|
|
|
destination,
|
|
|
|
sym_name);
|
|
|
|
if (size_of_stub != 0)
|
|
|
|
{
|
|
|
|
char *stub_name;
|
|
|
|
unsigned int len;
|
|
|
|
|
|
|
|
/* Get the name of this stub. */
|
|
|
|
len = strlen (sym_name);
|
|
|
|
len += 23;
|
|
|
|
|
|
|
|
stub_name = bfd_malloc (len);
|
|
|
|
if (!stub_name)
|
|
|
|
{
|
|
|
|
/* Because sym_name was mallocd above for local
|
|
|
|
symbols. */
|
|
|
|
if (r_index < symtab_hdr->sh_info)
|
|
|
|
free (new_name);
|
|
|
|
|
|
|
|
free (internal_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
1999-06-24 22:01:44 +02:00
|
|
|
elf32_hppa_name_of_stub (location, destination, stub_name);
|
1999-05-03 09:29:11 +02:00
|
|
|
strcat (stub_name + 22, sym_name);
|
|
|
|
|
|
|
|
/* Because sym_name was malloced above for local symbols. */
|
|
|
|
if (r_index < symtab_hdr->sh_info)
|
|
|
|
free (new_name);
|
|
|
|
|
|
|
|
stub_hash
|
|
|
|
= elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name,
|
|
|
|
false, false);
|
|
|
|
if (stub_hash != NULL)
|
|
|
|
{
|
|
|
|
/* The proper stub has already been created, nothing
|
|
|
|
else to do. */
|
|
|
|
free (stub_name);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
bfd_set_section_size (stub_bfd, stub_sec,
|
|
|
|
(bfd_section_size (stub_bfd,
|
|
|
|
stub_sec)
|
|
|
|
+ size_of_stub));
|
|
|
|
|
|
|
|
/* Enter this entry into the linker stub hash table. */
|
|
|
|
stub_hash
|
|
|
|
= elf32_hppa_stub_hash_lookup (stub_hash_table,
|
|
|
|
stub_name, true, true);
|
|
|
|
if (stub_hash == NULL)
|
|
|
|
{
|
|
|
|
free (stub_name);
|
|
|
|
free (internal_relocs);
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
goto error_return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We'll need these to determine the address that the
|
|
|
|
stub will branch to. */
|
|
|
|
stub_hash->target_value = sym_value;
|
|
|
|
stub_hash->target_section = sym_sec;
|
|
|
|
}
|
|
|
|
free (stub_name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* We're done with the internal relocs, free them. */
|
|
|
|
free (internal_relocs);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* We're done with the local symbols, free them. */
|
|
|
|
for (i = 0; i < bfd_count; i++)
|
|
|
|
if (all_local_syms[i])
|
|
|
|
free (all_local_syms[i]);
|
|
|
|
free (all_local_syms);
|
|
|
|
return true;
|
|
|
|
|
|
|
|
error_return:
|
|
|
|
/* Return gracefully, avoiding dangling references to the hash tables. */
|
|
|
|
if (stub_hash_table)
|
|
|
|
{
|
|
|
|
elf32_hppa_hash_table(link_info)->stub_hash_table = NULL;
|
|
|
|
free (stub_hash_table);
|
|
|
|
}
|
|
|
|
/* Set the size of the stub section to zero since we're never going
|
|
|
|
to create them. Avoids losing when we try to get its contents
|
|
|
|
too. */
|
|
|
|
bfd_set_section_size (stub_bfd, stub_sec, 0);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Misc BFD support code. */
|
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
|
1999-08-10 01:47:04 +02:00
|
|
|
#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_lcoal_label_name
|
1999-06-22 14:20:30 +02:00
|
|
|
#define elf_info_to_howto elf_hppa_info_to_howto
|
|
|
|
#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
/* Stuff for the BFD linker. */
|
|
|
|
#define elf_backend_relocate_section elf32_hppa_relocate_section
|
|
|
|
#define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
|
|
|
|
#define bfd_elf32_bfd_link_hash_table_create \
|
|
|
|
elf32_hppa_link_hash_table_create
|
|
|
|
|
|
|
|
#define TARGET_BIG_SYM bfd_elf32_hppa_vec
|
|
|
|
#define TARGET_BIG_NAME "elf32-hppa"
|
|
|
|
#define ELF_ARCH bfd_arch_hppa
|
|
|
|
#define ELF_MACHINE_CODE EM_PARISC
|
|
|
|
#define ELF_MAXPAGESIZE 0x1000
|
|
|
|
|
|
|
|
#include "elf32-target.h"
|