diff options
Diffstat (limited to 'bfd/elf32-arm.h')
| -rw-r--r-- | bfd/elf32-arm.h | 3238 |
1 files changed, 0 insertions, 3238 deletions
diff --git a/bfd/elf32-arm.h b/bfd/elf32-arm.h deleted file mode 100644 index 7b78fd6c812..00000000000 --- a/bfd/elf32-arm.h +++ /dev/null @@ -1,3238 +0,0 @@ -/* 32-bit ELF support for ARM - Copyright 1998, 1999 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. */ - - -typedef unsigned long int insn32; -typedef unsigned short int insn16; - -static boolean elf32_arm_set_private_flags - PARAMS ((bfd *, flagword)); -static boolean elf32_arm_copy_private_bfd_data - PARAMS ((bfd *, bfd *)); -static boolean elf32_arm_merge_private_bfd_data - PARAMS ((bfd *, bfd *)); -static boolean elf32_arm_print_private_bfd_data - PARAMS ((bfd *, PTR)); -static int elf32_arm_get_symbol_type - PARAMS (( Elf_Internal_Sym *, int)); -static struct bfd_link_hash_table *elf32_arm_link_hash_table_create - PARAMS ((bfd *)); -static bfd_reloc_status_type elf32_arm_final_link_relocate - PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *, - const char *, unsigned char, struct elf_link_hash_entry *)); - -static insn32 insert_thumb_branch - PARAMS ((insn32, int)); -static struct elf_link_hash_entry *find_thumb_glue - PARAMS ((struct bfd_link_info *, CONST char *, bfd *)); -static struct elf_link_hash_entry *find_arm_glue - PARAMS ((struct bfd_link_info *, CONST char *, bfd *)); -static void record_arm_to_thumb_glue - PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static void record_thumb_to_arm_glue - PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static void elf32_arm_post_process_headers - PARAMS ((bfd *, struct bfd_link_info *)); -static int elf32_arm_to_thumb_stub - PARAMS ((struct bfd_link_info *, const char *, bfd *, bfd *, asection *, - bfd_byte *, asection *, bfd_vma, bfd_signed_vma, bfd_vma)); -static int elf32_thumb_to_arm_stub - PARAMS ((struct bfd_link_info *, const char *, bfd *, bfd *, asection *, - bfd_byte *, asection *, bfd_vma, bfd_signed_vma, bfd_vma)); - -/* The linker script knows the section names for placement. - The entry_names are used to do simple name mangling on the stubs. - Given a function name, and its type, the stub can be found. The - name can be changed. The only requirement is the %s be present. - */ - -#define INTERWORK_FLAG( abfd ) (elf_elfheader (abfd)->e_flags & EF_INTERWORK) - -#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" -#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" - -#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" -#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" - -/* The size in bytes of an entry in the procedure linkage table. */ - -#define PLT_ENTRY_SIZE 16 - -/* The first entry in a procedure linkage table looks like - this. It is set up so that any shared library function that is - called before the relocation has been set up calls the dynamic - linker first */ - -static const bfd_byte elf32_arm_plt0_entry [PLT_ENTRY_SIZE] = -{ - 0x04, 0xe0, 0x2d, 0xe5, /* str lr, [sp, #-4]! */ - 0x10, 0xe0, 0x9f, 0xe5, /* ldr lr, [pc, #16] */ - 0x0e, 0xe0, 0x8f, 0xe0, /* adr lr, pc, lr */ - 0x08, 0xf0, 0xbe, 0xe5 /* ldr pc, [lr, #8]! */ -}; - -/* Subsequent entries in a procedure linkage table look like - this. */ - -static const bfd_byte elf32_arm_plt_entry [PLT_ENTRY_SIZE] = -{ - 0x04, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc, #4] */ - 0x0c, 0xc0, 0x8f, 0xe0, /* add ip, pc, ip */ - 0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */ - 0x00, 0x00, 0x00, 0x00 /* offset to symbol in got */ -}; - - -/* The ARM linker needs to keep track of the number of relocs that it - decides to copy in check_relocs for each symbol. This is so that - it can discard PC relative relocs if it doesn't need them when - linking with -Bsymbolic. We store the information in a field - extending the regular ELF linker hash table. */ - -/* This structure keeps track of the number of PC relative relocs we - have copied for a given symbol. */ - -struct elf32_arm_pcrel_relocs_copied -{ - /* Next section. */ - struct elf32_arm_pcrel_relocs_copied * next; - /* A section in dynobj. */ - asection * section; - /* Number of relocs copied in this section. */ - bfd_size_type count; -}; - -/* Arm ELF linker hash entry. */ - -struct elf32_arm_link_hash_entry -{ - struct elf_link_hash_entry root; - - /* Number of PC relative relocs copied for this symbol. */ - struct elf32_arm_pcrel_relocs_copied * pcrel_relocs_copied; -}; - -/* Declare this now that the above structures are defined. */ - -static boolean elf32_arm_discard_copies - PARAMS ((struct elf32_arm_link_hash_entry *, PTR)); - -/* Traverse an arm ELF linker hash table. */ - -#define elf32_arm_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ - (info))) - -/* Get the ARM elf linker hash table from a link_info structure. */ -#define elf32_arm_hash_table(info) \ - ((struct elf32_arm_link_hash_table *) ((info)->hash)) - -/* ARM ELF linker hash table */ -struct elf32_arm_link_hash_table - { - /* The main hash table. */ - struct elf_link_hash_table root; - - /* The size in bytes of the section containg the Thumb-to-ARM glue. */ - long int thumb_glue_size; - - /* The size in bytes of the section containg the ARM-to-Thumb glue. */ - long int arm_glue_size; - - /* An arbitary input BFD chosen to hold the glue sections. */ - bfd * bfd_of_glue_owner; - - /* A boolean indicating whether knowledge of the ARM's pipeline - length should be applied by the linker. */ - int no_pipeline_knowledge; - }; - - -/* Create an entry in an ARM ELF linker hash table. */ - -static struct bfd_hash_entry * -elf32_arm_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry * entry; - struct bfd_hash_table * table; - const char * string; -{ - struct elf32_arm_link_hash_entry * ret = - (struct elf32_arm_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct elf32_arm_link_hash_entry *) NULL) - ret = ((struct elf32_arm_link_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct elf32_arm_link_hash_entry))); - if (ret == (struct elf32_arm_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct elf32_arm_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct elf32_arm_link_hash_entry *) NULL) - ret->pcrel_relocs_copied = NULL; - - return (struct bfd_hash_entry *) ret; -} - -/* Create an ARM elf linker hash table */ - -static struct bfd_link_hash_table * -elf32_arm_link_hash_table_create (abfd) - bfd *abfd; -{ - struct elf32_arm_link_hash_table *ret; - - ret = ((struct elf32_arm_link_hash_table *) - bfd_alloc (abfd, sizeof (struct elf32_arm_link_hash_table))); - if (ret == (struct elf32_arm_link_hash_table *) NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - elf32_arm_link_hash_newfunc)) - { - bfd_release (abfd, ret); - return NULL; - } - - ret->thumb_glue_size = 0; - ret->arm_glue_size = 0; - ret->bfd_of_glue_owner = NULL; - ret->no_pipeline_knowledge = 0; - - return &ret->root.root; -} - -static struct elf_link_hash_entry * -find_thumb_glue (link_info, name, input_bfd) - struct bfd_link_info *link_info; - CONST char *name; - bfd *input_bfd; -{ - char *tmp_name; - struct elf_link_hash_entry *hash; - struct elf32_arm_link_hash_table *hash_table; - - /* We need a pointer to the armelf specific hash table. */ - hash_table = elf32_arm_hash_table (link_info); - - - tmp_name = ((char *) - bfd_malloc (strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1)); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); - - hash = elf_link_hash_lookup - (&(hash_table)->root, tmp_name, false, false, true); - - if (hash == NULL) - /* xgettext:c-format */ - _bfd_error_handler (_ ("%s: unable to find THUMB glue '%s' for `%s'"), - bfd_get_filename (input_bfd), tmp_name, name); - - free (tmp_name); - - return hash; -} - -static struct elf_link_hash_entry * -find_arm_glue (link_info, name, input_bfd) - struct bfd_link_info *link_info; - CONST char *name; - bfd *input_bfd; -{ - char *tmp_name; - struct elf_link_hash_entry *myh; - struct elf32_arm_link_hash_table *hash_table; - - /* We need a pointer to the elfarm specific hash table. */ - hash_table = elf32_arm_hash_table (link_info); - - tmp_name = ((char *) - bfd_malloc (strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1)); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); - - myh = elf_link_hash_lookup - (&(hash_table)->root, tmp_name, false, false, true); - - if (myh == NULL) - /* xgettext:c-format */ - _bfd_error_handler (_ ("%s: unable to find ARM glue '%s' for `%s'"), - bfd_get_filename (input_bfd), tmp_name, name); - - free (tmp_name); - - return myh; -} - -/* - ARM->Thumb glue: - - .arm - __func_from_arm: - ldr r12, __func_addr - bx r12 - __func_addr: - .word func @ behave as if you saw a ARM_32 reloc - */ - -#define ARM2THUMB_GLUE_SIZE 12 -static const insn32 a2t1_ldr_insn = 0xe59fc000; -static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; -static const insn32 a2t3_func_addr_insn = 0x00000001; - -/* - Thumb->ARM: Thumb->(non-interworking aware) ARM - - .thumb .thumb - .align 2 .align 2 - __func_from_thumb: __func_from_thumb: - bx pc push {r6, lr} - nop ldr r6, __func_addr - .arm mov lr, pc - __func_change_to_arm: bx r6 - b func .arm - __func_back_to_thumb: - ldmia r13! {r6, lr} - bx lr - __func_addr: - .word func - */ - -#define THUMB2ARM_GLUE_SIZE 8 -static const insn16 t2a1_bx_pc_insn = 0x4778; -static const insn16 t2a2_noop_insn = 0x46c0; -static const insn32 t2a3_b_insn = 0xea000000; - -static const insn16 t2a1_push_insn = 0xb540; -static const insn16 t2a2_ldr_insn = 0x4e03; -static const insn16 t2a3_mov_insn = 0x46fe; -static const insn16 t2a4_bx_insn = 0x4730; -static const insn32 t2a5_pop_insn = 0xe8bd4040; -static const insn32 t2a6_bx_insn = 0xe12fff1e; - -boolean -bfd_elf32_arm_allocate_interworking_sections (info) - struct bfd_link_info * info; -{ - asection * s; - bfd_byte * foo; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - - if (globals->arm_glue_size != 0) - { - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - foo = (bfd_byte *) bfd_alloc - (globals->bfd_of_glue_owner, globals->arm_glue_size); - - s->_raw_size = s->_cooked_size = globals->arm_glue_size; - s->contents = foo; - } - - if (globals->thumb_glue_size != 0) - { - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - foo = (bfd_byte *) bfd_alloc - (globals->bfd_of_glue_owner, globals->thumb_glue_size); - - s->_raw_size = s->_cooked_size = globals->thumb_glue_size; - s->contents = foo; - } - - return true; -} - -static void -record_arm_to_thumb_glue (link_info, h) - struct bfd_link_info * link_info; - struct elf_link_hash_entry * h; -{ - const char * name = h->root.root.string; - register asection * s; - char * tmp_name; - struct elf_link_hash_entry * myh; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (link_info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); - - - BFD_ASSERT (s != NULL); - - tmp_name = ((char *) - bfd_malloc (strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1)); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); - - myh = elf_link_hash_lookup - (&(globals)->root, tmp_name, false, false, true); - - if (myh != NULL) - { - free (tmp_name); - return; /* we've already seen this guy */ - } - - /* The only trick here is using hash_table->arm_glue_size as the value. Even - though the section isn't allocated yet, this is where we will be putting - it. */ - - _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, tmp_name, - BSF_GLOBAL, - s, globals->arm_glue_size + 1, - NULL, true, false, - (struct bfd_link_hash_entry **) &myh); - - free (tmp_name); - - globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; - - return; -} - -static void -record_thumb_to_arm_glue (link_info, h) - struct bfd_link_info *link_info; - struct elf_link_hash_entry *h; -{ - const char *name = h->root.root.string; - register asection *s; - char *tmp_name; - struct elf_link_hash_entry *myh; - struct elf32_arm_link_hash_table *hash_table; - char bind; - - hash_table = elf32_arm_hash_table (link_info); - - BFD_ASSERT (hash_table != NULL); - BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - tmp_name = (char *) bfd_malloc (strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); - - myh = elf_link_hash_lookup - (&(hash_table)->root, tmp_name, false, false, true); - - if (myh != NULL) - { - free (tmp_name); - return; /* we've already seen this guy */ - } - - _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, tmp_name, - BSF_GLOBAL, s, hash_table->thumb_glue_size + 1, - NULL, true, false, - (struct bfd_link_hash_entry **) &myh); - - /* If we mark it 'thumb', the disassembler will do a better job. */ - bind = ELF_ST_BIND (myh->type); - myh->type = ELF_ST_INFO (bind, STT_ARM_TFUNC); - - free (tmp_name); - - /* Allocate another symbol to mark where we switch to arm mode. */ - -#define CHANGE_TO_ARM "__%s_change_to_arm" -#define BACK_FROM_ARM "__%s_back_from_arm" - - tmp_name = (char *) bfd_malloc (strlen (name) + strlen (CHANGE_TO_ARM) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, CHANGE_TO_ARM, name); - - myh = NULL; - - _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, tmp_name, - BSF_LOCAL, s, hash_table->thumb_glue_size + 4, - NULL, true, false, - (struct bfd_link_hash_entry **) &myh); - - free (tmp_name); - - hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; - - return; -} - -/* Select a BFD to be used to hold the sections used by the glue code. - This function is called from the linker scripts in ld/emultempl/ - {armelf/pe}.em */ -boolean -bfd_elf32_arm_get_bfd_for_interworking (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - struct elf32_arm_link_hash_table *globals; - flagword flags; - asection *sec; - - /* If we are only performing a partial link do not bother - getting a bfd to hold the glue. */ - if (info->relocateable) - return true; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - - if (globals->bfd_of_glue_owner != NULL) - return true; - - sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); - - if (sec == NULL) - { - /* Note: we do not include the flag SEC_LINKER_CREATED, as this - will prevent elf_link_input_bfd() from processing the contents - of this section. */ - flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; - - sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME); - - if (sec == NULL - || !bfd_set_section_flags (abfd, sec, flags) - || !bfd_set_section_alignment (abfd, sec, 2)) - return false; - - /* Set the gc mark to prevent the section from being removed by garbage - collection, despite the fact that no relocs refer to this section. */ - sec->gc_mark = 1; - } - - sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); - - if (sec == NULL) - { - flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; - - sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME); - - if (sec == NULL - || !bfd_set_section_flags (abfd, sec, flags) - || !bfd_set_section_alignment (abfd, sec, 2)) - return false; - - sec->gc_mark = 1; - } - - /* Save the bfd for later use. */ - globals->bfd_of_glue_owner = abfd; - - return true; -} - -boolean -bfd_elf32_arm_process_before_allocation (abfd, link_info, no_pipeline_knowledge) - bfd *abfd; - struct bfd_link_info *link_info; - int no_pipeline_knowledge; -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *free_relocs = NULL; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *contents = NULL; - bfd_byte *free_contents = NULL; - Elf32_External_Sym *extsyms = NULL; - Elf32_External_Sym *free_extsyms = NULL; - - asection *sec; - struct elf32_arm_link_hash_table *globals; - - /* If we are only performing a partial link do not bother - to construct any glue. */ - if (link_info->relocateable) - return true; - - /* Here we have a bfd that is to be included on the link. We have a hook - to do reloc rummaging, before section sizes are nailed down. */ - - globals = elf32_arm_hash_table (link_info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - globals->no_pipeline_knowledge = no_pipeline_knowledge; - - /* Rummage around all the relocs and map the glue vectors. */ - sec = abfd->sections; - - if (sec == NULL) - return true; - - for (; sec != NULL; sec = sec->next) - { - if (sec->reloc_count == 0) - continue; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - /* Load the relocs. */ - - irel = (_bfd_elf32_link_read_relocs (abfd, sec, (PTR) NULL, - (Elf_Internal_Rela *) NULL, false)); - - BFD_ASSERT (irel != 0); - - irelend = irel + sec->reloc_count; - for (; irel < irelend; irel++) - { - long r_type; - unsigned long r_index; - - struct elf_link_hash_entry *h; - - r_type = ELF32_R_TYPE (irel->r_info); - r_index = ELF32_R_SYM (irel->r_info); - - /* These are the only relocation types we care about */ - if ( r_type != R_ARM_PC24 - && r_type != R_ARM_THM_PC22) - continue; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else - { - /* Go get them off disk. */ - contents = (bfd_byte *) bfd_malloc (sec->_raw_size); - if (contents == NULL) - goto error_return; - free_contents = contents; - - if (!bfd_get_section_contents (abfd, sec, contents, - (file_ptr) 0, sec->_raw_size)) - goto error_return; - } - } - - /* Read this BFD's symbols if we haven't done so already. */ - if (extsyms == NULL) - { - /* Get cached copy if it exists. */ - if (symtab_hdr->contents != NULL) - extsyms = (Elf32_External_Sym *) symtab_hdr->contents; - else - { - /* Go get them off disk. */ - extsyms = ((Elf32_External_Sym *) - bfd_malloc (symtab_hdr->sh_size)); - if (extsyms == NULL) - goto error_return; - free_extsyms = extsyms; - if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) - != symtab_hdr->sh_size)) - goto error_return; - } - } - - /* If the relocation is not against a symbol it cannot concern us. */ - - h = NULL; - - /* We don't care about local symbols */ - if (r_index < symtab_hdr->sh_info) - continue; - - /* This is an external symbol */ - r_index -= symtab_hdr->sh_info; - h = (struct elf_link_hash_entry *) - elf_sym_hashes (abfd)[r_index]; - - /* If the relocation is against a static symbol it must be within - the current section and so cannot be a cross ARM/Thumb relocation. */ - if (h == NULL) - continue; - - switch (r_type) - { - case R_ARM_PC24: - /* This one is a call from arm code. We need to look up - the target of the call. If it is a thumb target, we - insert glue. */ - - if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC) - record_arm_to_thumb_glue (link_info, h); - break; - - case R_ARM_THM_PC22: - /* This one is a call from thumb code. We look - up the target of the call. If it is not a thumb - target, we insert glue. */ - - if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC) - record_thumb_to_arm_glue (link_info, h); - break; - - default: - break; - } - } - } - - return true; - -error_return: - if (free_relocs != NULL) - free (free_relocs); - if (free_contents != NULL) - free (free_contents); - if (free_extsyms != NULL) - free (free_extsyms); - - return false; -} - -/* The thumb form of a long branch is a bit finicky, because the offset - encoding is split over two fields, each in it's own instruction. They - can occur in any order. So given a thumb form of long branch, and an - offset, insert the offset into the thumb branch and return finished - instruction. - - It takes two thumb instructions to encode the target address. Each has - 11 bits to invest. The upper 11 bits are stored in one (identifed by - H-0.. see below), the lower 11 bits are stored in the other (identified - by H-1). - - Combine together and shifted left by 1 (it's a half word address) and - there you have it. - - Op: 1111 = F, - H-0, upper address-0 = 000 - Op: 1111 = F, - H-1, lower address-0 = 800 - - They can be ordered either way, but the arm tools I've seen always put - the lower one first. It probably doesn't matter. krk@cygnus.com - - XXX: Actually the order does matter. The second instruction (H-1) - moves the computed address into the PC, so it must be the second one - in the sequence. The problem, however is that whilst little endian code - stores the instructions in HI then LOW order, big endian code does the - reverse. nickc@cygnus.com */ - -#define LOW_HI_ORDER 0xF800F000 -#define HI_LOW_ORDER 0xF000F800 - -static insn32 -insert_thumb_branch (br_insn, rel_off) - insn32 br_insn; - int rel_off; -{ - unsigned int low_bits; - unsigned int high_bits; - - - BFD_ASSERT ((rel_off & 1) != 1); - - rel_off >>= 1; /* half word aligned address */ - low_bits = rel_off & 0x000007FF; /* the bottom 11 bits */ - high_bits = (rel_off >> 11) & 0x000007FF; /* the top 11 bits */ - - if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) - br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; - else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) - br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; - else - abort (); /* error - not a valid branch instruction form */ - - /* FIXME: abort is probably not the right call. krk@cygnus.com */ - - return br_insn; -} - -/* Thumb code calling an ARM function */ -static int -elf32_thumb_to_arm_stub (info, name, input_bfd, output_bfd, input_section, - hit_data, sym_sec, offset, addend, val) - struct bfd_link_info * info; - const char * name; - bfd * input_bfd; - bfd * output_bfd; - asection * input_section; - bfd_byte * hit_data; - asection * sym_sec; - bfd_vma offset; - bfd_signed_vma addend; - bfd_vma val; -{ - asection * s = 0; - long int my_offset; - unsigned long int tmp; - long int ret_offset; - struct elf_link_hash_entry * myh; - struct elf32_arm_link_hash_table * globals; - - myh = find_thumb_glue (info, name, input_bfd); - if (myh == NULL) - return false; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - my_offset = myh->root.u.def.value; - - s = bfd_get_section_by_name (globals->bfd_of_glue_owner, - THUMB2ARM_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - BFD_ASSERT (s->contents != NULL); - BFD_ASSERT (s->output_section != NULL); - - if ((my_offset & 0x01) == 0x01) - { - if (sym_sec != NULL - && sym_sec->owner != NULL - && !INTERWORK_FLAG (sym_sec->owner)) - { - _bfd_error_handler - (_ ("%s(%s): warning: interworking not enabled."), - bfd_get_filename (sym_sec->owner), name); - _bfd_error_handler - (_ (" first occurrence: %s: thumb call to arm"), - bfd_get_filename (input_bfd)); - - return false; - } - - --my_offset; - myh->root.u.def.value = my_offset; - - bfd_put_16 (output_bfd, t2a1_bx_pc_insn, - s->contents + my_offset); - - bfd_put_16 (output_bfd, t2a2_noop_insn, - s->contents + my_offset + 2); - - ret_offset = - ((bfd_signed_vma) val) /* Address of destination of the stub */ - - ((bfd_signed_vma) - (s->output_offset /* Offset from the start of the current section to the start of the stubs. */ - + my_offset /* Offset of the start of this stub from the start of the stubs. */ - + s->output_section->vma) /* Address of the start of the current section. */ - + 4 /* The branch instruction is 4 bytes into the stub. */ - + 8); /* ARM branches work from the pc of the instruction + 8. */ - - bfd_put_32 (output_bfd, - t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), - s->contents + my_offset + 4); - } - - BFD_ASSERT (my_offset <= globals->thumb_glue_size); - - /* Now go back and fix up the original BL insn to point - to here. */ - ret_offset = - s->output_offset - + my_offset - - (input_section->output_offset - + offset + addend) - - 8; - - tmp = bfd_get_32 (input_bfd, hit_data - - input_section->vma); - - bfd_put_32 (output_bfd, - insert_thumb_branch (tmp, ret_offset), - hit_data - input_section->vma); - - return true; -} - -/* Arm code calling a Thumb function */ -static int -elf32_arm_to_thumb_stub (info, name, input_bfd, output_bfd, input_section, - hit_data, sym_sec, offset, addend, val) - struct bfd_link_info * info; - const char * name; - bfd * input_bfd; - bfd * output_bfd; - asection * input_section; - bfd_byte * hit_data; - asection * sym_sec; - bfd_vma offset; - bfd_signed_vma addend; - bfd_vma val; -{ - unsigned long int tmp; - long int my_offset; - asection * s; - long int ret_offset; - struct elf_link_hash_entry * myh; - struct elf32_arm_link_hash_table * globals; - - myh = find_arm_glue (info, name, input_bfd); - if (myh == NULL) - return false; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - my_offset = myh->root.u.def.value; - s = bfd_get_section_by_name (globals->bfd_of_glue_owner, - ARM2THUMB_GLUE_SECTION_NAME); - BFD_ASSERT (s != NULL); - BFD_ASSERT (s->contents != NULL); - BFD_ASSERT (s->output_section != NULL); - - if ((my_offset & 0x01) == 0x01) - { - if (sym_sec != NULL - && sym_sec->owner != NULL - && !INTERWORK_FLAG (sym_sec->owner)) - { - _bfd_error_handler - (_ ("%s(%s): warning: interworking not enabled."), - bfd_get_filename (sym_sec->owner), name); - _bfd_error_handler - (_ (" first occurrence: %s: arm call to thumb"), - bfd_get_filename (input_bfd)); - } - --my_offset; - myh->root.u.def.value = my_offset; - - bfd_put_32 (output_bfd, a2t1_ldr_insn, - s->contents + my_offset); - - bfd_put_32 (output_bfd, a2t2_bx_r12_insn, - s->contents + my_offset + 4); - - /* It's a thumb address. Add the low order bit. */ - bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, - s->contents + my_offset + 8); - } - - BFD_ASSERT (my_offset <= globals->arm_glue_size); - - tmp = bfd_get_32 (input_bfd, hit_data); - tmp = tmp & 0xFF000000; - - /* Somehow these are both 4 too far, so subtract 8. */ - ret_offset = s->output_offset - + my_offset - + s->output_section->vma - - (input_section->output_offset - + input_section->output_section->vma - + offset + addend) - - 8; - - tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); - - bfd_put_32 (output_bfd, tmp, hit_data - - input_section->vma); - - return true; -} - -/* Perform a relocation as part of a final link. */ -static bfd_reloc_status_type -elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, - input_section, contents, rel, value, - info, sym_sec, sym_name, sym_flags, h) - reloc_howto_type * howto; - bfd * input_bfd; - bfd * output_bfd; - asection * input_section; - bfd_byte * contents; - Elf_Internal_Rela * rel; - bfd_vma value; - struct bfd_link_info * info; - asection * sym_sec; - const char * sym_name; - unsigned char sym_flags; - struct elf_link_hash_entry * h; -{ - unsigned long r_type = howto->type; - unsigned long r_symndx; - bfd_byte * hit_data = contents + rel->r_offset; - bfd * dynobj = NULL; - Elf_Internal_Shdr * symtab_hdr; - struct elf_link_hash_entry ** sym_hashes; - bfd_vma * local_got_offsets; - asection * sgot = NULL; - asection * splt = NULL; - asection * sreloc = NULL; - bfd_vma addend; - bfd_signed_vma signed_addend; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (info); - - dynobj = elf_hash_table (info)->dynobj; - if (dynobj) - { - sgot = bfd_get_section_by_name (dynobj, ".got"); - splt = bfd_get_section_by_name (dynobj, ".plt"); - } - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - local_got_offsets = elf_local_got_offsets (input_bfd); - r_symndx = ELF32_R_SYM (rel->r_info); - -#ifdef USE_REL - addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; - - if (addend & ((howto->src_mask + 1) >> 1)) - { - signed_addend = -1; - signed_addend &= ~ howto->src_mask; - signed_addend |= addend; - } - else - signed_addend = addend; -#else - addend = signed_addend = rel->r_addend; -#endif - - switch (r_type) - { - case R_ARM_NONE: - return bfd_reloc_ok; - - case R_ARM_PC24: - case R_ARM_ABS32: - case R_ARM_REL32: - /* When generating a shared object, these relocations are copied - into the output file to be resolved at run time. */ - - if (info->shared - && (r_type != R_ARM_PC24 - || (h != NULL - && h->dynindx != -1 - && (! info->symbolic - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)))) - { - Elf_Internal_Rel outrel; - boolean skip, relocate; - - if (sreloc == NULL) - { - const char * name; - - name = (bfd_elf_string_from_elf_section - (input_bfd, - elf_elfheader (input_bfd)->e_shstrndx, - elf_section_data (input_section)->rel_hdr.sh_name)); - if (name == NULL) - return bfd_reloc_notsupported; - - BFD_ASSERT (strncmp (name, ".rel", 4) == 0 - && strcmp (bfd_get_section_name (input_bfd, - input_section), - name + 4) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - BFD_ASSERT (sreloc != NULL); - } - - skip = false; - - if (elf_section_data (input_section)->stab_info == NULL) - outrel.r_offset = rel->r_offset; - else - { - bfd_vma off; - - off = (_bfd_stab_section_offset - (output_bfd, &elf_hash_table (info)->stab_info, - input_section, - & elf_section_data (input_section)->stab_info, - rel->r_offset)); - if (off == (bfd_vma) -1) - skip = true; - outrel.r_offset = off; - } - - outrel.r_offset += (input_section->output_section->vma - + input_section->output_offset); - - if (skip) - { - memset (&outrel, 0, sizeof outrel); - relocate = false; - } - else if (r_type == R_ARM_PC24) - { - BFD_ASSERT (h != NULL && h->dynindx != -1); - if ((input_section->flags & SEC_ALLOC) != 0) - relocate = false; - else - relocate = true; - outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_PC24); - } - else - { - if (h == NULL - || ((info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) != 0)) - { - relocate = true; - outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); - } - else - { - BFD_ASSERT (h->dynindx != -1); - if ((input_section->flags & SEC_ALLOC) != 0) - relocate = false; - else - relocate = true; - outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_ABS32); - } - } - - bfd_elf32_swap_reloc_out (output_bfd, &outrel, - (((Elf32_External_Rel *) - sreloc->contents) - + sreloc->reloc_count)); - ++sreloc->reloc_count; - - /* If this reloc is against an external symbol, we do not want to - fiddle with the addend. Otherwise, we need to include the symbol - value so that it becomes an addend for the dynamic reloc. */ - if (! relocate) - return bfd_reloc_ok; - - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - } - else switch (r_type) - { - case R_ARM_PC24: - /* Arm B/BL instruction */ - - /* Check for arm calling thumb function. */ - if (sym_flags == STT_ARM_TFUNC) - { - elf32_arm_to_thumb_stub (info, sym_name, input_bfd, output_bfd, - input_section, hit_data, sym_sec, rel->r_offset, - signed_addend, value); - return bfd_reloc_ok; - } - - if ( strcmp (bfd_get_target (input_bfd), "elf32-littlearm-oabi") == 0 - || strcmp (bfd_get_target (input_bfd), "elf32-bigarm-oabi") == 0) - { - /* The old way of doing things. Trearing the addend as a - byte sized field and adding in the pipeline offset. */ - - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= rel->r_offset; - value += addend; - - if (! globals->no_pipeline_knowledge) - value -= 8; - } - else - { - /* The ARM ELF ABI says that this reloc is computed as: S - P + A - where: - S is the address of the symbol in the relocation. - P is address of the instruction being relocated. - A is the addend (extracted from the instruction) in bytes. - - S is held in 'value'. - P is the base address of the section containing the instruction - plus the offset of the reloc into that section, ie: - (input_section->output_section->vma + - input_section->output_offset + - rel->r_offset). - A is the addend, converted into bytes, ie: - (signed_addend * 4) - - Note: None of these operations have knowledge of the pipeline - size of the processor, thus it is up to the assembler to encode - this information into the addend. */ - - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= rel->r_offset; - value += (signed_addend << howto->size); - - /* Previous versions of this code also used to add in the pipeline - offset here. This is wrong because the linker is not supposed - to know about such things, and one day it might change. In order - to support old binaries that need the old behaviour however, so - we attempt to detect which ABI was used to create the reloc. */ - if (! globals->no_pipeline_knowledge) - { - Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ - - i_ehdrp = elf_elfheader (input_bfd); - - if (i_ehdrp->e_ident[EI_OSABI] == 0) - value -= 8; - } - } - - /* It is not an error for an undefined weak reference to be - out of range. Any program that branches to such a symbol - is going to crash anyway, so there is no point worrying - about getting the destination exactly right. */ - if (! h || h->root.type != bfd_link_hash_undefweak) - { - /* Perform a signed range check. */ - signed_addend = value; - signed_addend >>= howto->rightshift; - if (signed_addend > ((bfd_signed_vma)(howto->dst_mask >> 1)) - || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) - return bfd_reloc_overflow; - } - - value = (signed_addend & howto->dst_mask) - | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); - break; - - case R_ARM_ABS32: - value += addend; - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - break; - - case R_ARM_REL32: - value -= (input_section->output_section->vma - + input_section->output_offset); - value += addend; - break; - } - - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_ABS8: - value += addend; - if ((long) value > 0x7f || (long) value < -0x80) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_ABS16: - value += addend; - - if ((long) value > 0x7fff || (long) value < -0x8000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_ABS12: - /* Support ldr and str instruction for the arm */ - /* Also thumb b (unconditional branch). ??? Really? */ - value += addend; - - if ((long) value > 0x7ff || (long) value < -0x800) - return bfd_reloc_overflow; - - value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000); - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_THM_ABS5: - /* Support ldr and str instructions for the thumb. */ -#ifdef USE_REL - /* Need to refetch addend. */ - addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; - /* ??? Need to determine shift amount from operand size. */ - addend >>= howto->rightshift; -#endif - value += addend; - - /* ??? Isn't value unsigned? */ - if ((long) value > 0x1f || (long) value < -0x10) - return bfd_reloc_overflow; - - /* ??? Value needs to be properly shifted into place first. */ - value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_THM_PC22: - /* Thumb BL (branch long instruction). */ - { - bfd_vma relocation; - boolean overflow = false; - bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); - bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); - bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; - bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; - bfd_vma check; - bfd_signed_vma signed_check; - -#ifdef USE_REL - /* Need to refetch the addend and squish the two 11 bit pieces - together. */ - { - bfd_vma upper = upper_insn & 0x7ff; - bfd_vma lower = lower_insn & 0x7ff; - upper = (upper ^ 0x400) - 0x400; /* sign extend */ - addend = (upper << 12) | (lower << 1); - signed_addend = addend; - } -#endif - - /* If it is not a call to thumb, assume call to arm. - If it is a call relative to a section name, then it is not a - function call at all, but rather a long jump. */ - if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION) - { - if (elf32_thumb_to_arm_stub - (info, sym_name, input_bfd, output_bfd, input_section, - hit_data, sym_sec, rel->r_offset, signed_addend, value)) - return bfd_reloc_ok; - else - return bfd_reloc_dangerous; - } - - relocation = value + signed_addend; - - relocation -= (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - if (! globals->no_pipeline_knowledge) - { - Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ - - i_ehdrp = elf_elfheader (input_bfd); - - /* Previous versions of this code also used to add in the pipline - offset here. This is wrong because the linker is not supposed - to know about such things, and one day it might change. In order - to support old binaries that need the old behaviour however, so - we attempt to detect which ABI was used to create the reloc. */ - if ( strcmp (bfd_get_target (input_bfd), "elf32-littlearm-oabi") == 0 - || strcmp (bfd_get_target (input_bfd), "elf32-bigarm-oabi") == 0 - || i_ehdrp->e_ident[EI_OSABI] == 0) - relocation += 4; - } - - check = relocation >> howto->rightshift; - - /* If this is a signed value, the rightshift just dropped - leading 1 bits (assuming twos complement). */ - if ((bfd_signed_vma) relocation >= 0) - signed_check = check; - else - signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); - - /* Assumes two's complement. */ - if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) - overflow = true; - - /* Put RELOCATION back into the insn. */ - upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff); - lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff); - - /* Put the relocated value back in the object file: */ - bfd_put_16 (input_bfd, upper_insn, hit_data); - bfd_put_16 (input_bfd, lower_insn, hit_data + 2); - - return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); - } - break; - - case R_ARM_GNU_VTINHERIT: - case R_ARM_GNU_VTENTRY: - return bfd_reloc_ok; - - case R_ARM_COPY: - return bfd_reloc_notsupported; - - case R_ARM_GLOB_DAT: - return bfd_reloc_notsupported; - - case R_ARM_JUMP_SLOT: - return bfd_reloc_notsupported; - - case R_ARM_RELATIVE: - return bfd_reloc_notsupported; - - case R_ARM_GOTOFF: - /* Relocation is relative to the start of the - global offset table. */ - - BFD_ASSERT (sgot != NULL); - if (sgot == NULL) - return bfd_reloc_notsupported; - - /* Note that sgot->output_offset is not involved in this - calculation. We always want the start of .got. If we - define _GLOBAL_OFFSET_TABLE in a different way, as is - permitted by the ABI, we might have to change this - calculation. */ - - value -= sgot->output_section->vma; - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - - case R_ARM_GOTPC: - /* Use global offset table as symbol value. */ - - BFD_ASSERT (sgot != NULL); - - if (sgot == NULL) - return bfd_reloc_notsupported; - - value = sgot->output_section->vma; - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - - case R_ARM_GOT32: - /* Relocation is to the entry for this symbol in the - global offset table. */ - if (sgot == NULL) - return bfd_reloc_notsupported; - - if (h != NULL) - { - bfd_vma off; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - - if (!elf_hash_table (info)->dynamic_sections_created || - (info->shared && (info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) - { - /* This is actually a static link, or it is a -Bsymbolic link - and the symbol is defined locally. We must initialize this - entry in the global offset table. Since the offset must - always be a multiple of 4, we use the least significant bit - to record whether we have initialized it already. - - When doing a dynamic link, we create a .rel.got relocation - entry to initialize the value. This is done in the - finish_dynamic_symbol routine. */ - - if ((off & 1) != 0) - off &= ~1; - else - { - bfd_put_32 (output_bfd, value, sgot->contents + off); - h->got.offset |= 1; - } - } - - value = sgot->output_offset + off; - } - else - { - bfd_vma off; - - BFD_ASSERT (local_got_offsets != NULL && - local_got_offsets[r_symndx] != (bfd_vma) -1); - - off = local_got_offsets[r_symndx]; - - /* The offset must always be a multiple of 4. We use the - least significant bit to record whether we have already - generated the necessary reloc. */ - if ((off & 1) != 0) - off &= ~1; - else - { - bfd_put_32 (output_bfd, value, sgot->contents + off); - - if (info->shared) - { - asection * srelgot; - Elf_Internal_Rel outrel; - - srelgot = bfd_get_section_by_name (dynobj, ".rel.got"); - BFD_ASSERT (srelgot != NULL); - - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + off); - outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); - bfd_elf32_swap_reloc_out (output_bfd, &outrel, - (((Elf32_External_Rel *) - srelgot->contents) - + srelgot->reloc_count)); - ++srelgot->reloc_count; - } - - local_got_offsets[r_symndx] |= 1; - } - - value = sgot->output_offset + off; - } - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - - case R_ARM_PLT32: - /* Relocation is to the entry for this symbol in the - procedure linkage table. */ - - /* Resolve a PLT32 reloc against a local symbol directly, - without using the procedure linkage table. */ - if (h == NULL) - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - - if (h->plt.offset == (bfd_vma) -1) - /* We didn't make a PLT entry for this symbol. This - happens when statically linking PIC code, or when - using -Bsymbolic. */ - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - - BFD_ASSERT(splt != NULL); - if (splt == NULL) - return bfd_reloc_notsupported; - - value = (splt->output_section->vma - + splt->output_offset - + h->plt.offset); - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - - case R_ARM_SBREL32: - return bfd_reloc_notsupported; - - case R_ARM_AMP_VCALL9: - return bfd_reloc_notsupported; - - case R_ARM_RSBREL32: - return bfd_reloc_notsupported; - - case R_ARM_THM_RPC22: - return bfd_reloc_notsupported; - - case R_ARM_RREL32: - return bfd_reloc_notsupported; - - case R_ARM_RABS32: - return bfd_reloc_notsupported; - - case R_ARM_RPC24: - return bfd_reloc_notsupported; - - case R_ARM_RBASE: - return bfd_reloc_notsupported; - - default: - return bfd_reloc_notsupported; - } -} - -#ifdef USE_REL -/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ -static void -arm_add_to_rel (abfd, address, howto, increment) - bfd * abfd; - bfd_byte * address; - reloc_howto_type * howto; - bfd_signed_vma increment; -{ - bfd_vma contents; - bfd_signed_vma addend; - - contents = bfd_get_32 (abfd, address); - - /* Get the (signed) value from the instruction. */ - addend = contents & howto->src_mask; - if (addend & ((howto->src_mask + 1) >> 1)) - { - bfd_signed_vma mask; - - mask = -1; - mask &= ~ howto->src_mask; - addend |= mask; - } - - /* Add in the increment, (which is a byte value). */ - switch (howto->type) - { - case R_ARM_THM_PC22: - default: - addend += increment; - break; - - case R_ARM_PC24: - addend <<= howto->size; - addend += increment; - - /* Should we check for overflow here ? */ - - /* Drop any undesired bits. */ - addend >>= howto->rightshift; - break; - } - - contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); - - bfd_put_32 (abfd, contents, address); -} -#endif /* USE_REL */ - -/* Relocate an ARM ELF section. */ -static boolean -elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - bfd * output_bfd; - struct bfd_link_info * info; - bfd * input_bfd; - asection * input_section; - bfd_byte * contents; - Elf_Internal_Rela * relocs; - Elf_Internal_Sym * local_syms; - asection ** local_sections; -{ - Elf_Internal_Shdr * symtab_hdr; - struct elf_link_hash_entry ** sym_hashes; - Elf_Internal_Rela * rel; - Elf_Internal_Rela * relend; - const char * name; - - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - int r_type; - reloc_howto_type * howto; - unsigned long r_symndx; - Elf_Internal_Sym * sym; - asection * sec; - struct elf_link_hash_entry * h; - bfd_vma relocation; - bfd_reloc_status_type r; - arelent bfd_reloc; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - - if ( r_type == R_ARM_GNU_VTENTRY - || r_type == R_ARM_GNU_VTINHERIT) - continue; - - elf32_arm_info_to_howto (input_bfd, & bfd_reloc, rel); - howto = bfd_reloc.howto; - - 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) - { - sec = local_sections[r_symndx]; -#ifdef USE_REL - arm_add_to_rel (input_bfd, contents + rel->r_offset, - howto, sec->output_offset + sym->st_value); -#else - rel->r_addend += (sec->output_offset + sym->st_value) - >> howto->rightshift; -#endif - } - } - - continue; - } - - /* This is a final link. */ - h = NULL; - sym = NULL; - sec = NULL; - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); - } - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - int relocation_needed = 1; - - sec = h->root.u.def.section; - - /* In these cases, we don't need the relocation value. - We check specially because in some obscure cases - sec->output_section will be NULL. */ - switch (r_type) - { - case R_ARM_PC24: - case R_ARM_ABS32: - if (info->shared - && ( - (!info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - ) - && ((input_section->flags & SEC_ALLOC) != 0) - ) - relocation_needed = 0; - break; - - case R_ARM_GOTPC: - relocation_needed = 0; - break; - - case R_ARM_GOT32: - if (elf_hash_table(info)->dynamic_sections_created - && (!info->shared - || (!info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - ) - ) - relocation_needed = 0; - break; - - case R_ARM_PLT32: - if (h->plt.offset != (bfd_vma)-1) - relocation_needed = 0; - break; - - default: - if (sec->output_section == NULL) - { - (*_bfd_error_handler) - (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), - bfd_get_filename (input_bfd), h->root.root.string, - bfd_get_section_name (input_bfd, input_section)); - relocation_needed = 0; - } - } - - if (relocation_needed) - relocation = h->root.u.def.value - + sec->output_section->vma - + sec->output_offset; - else - relocation = 0; - } - else if (h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else if (info->shared && !info->symbolic && !info->no_undefined) - relocation = 0; - else - { - if (!((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset))) - return false; - relocation = 0; - } - } - - if (h != NULL) - name = h->root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL || *name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, - input_section, contents, rel, - relocation, info, sec, name, - (h ? ELF_ST_TYPE (h->type) : - ELF_ST_TYPE (sym->st_info)), h); - - if (r != bfd_reloc_ok) - { - const char * msg = (const char *) 0; - - switch (r) - { - case bfd_reloc_overflow: - if (!((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, - input_bfd, input_section, rel->r_offset))) - return false; - break; - - case bfd_reloc_undefined: - if (!((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset))) - return false; - break; - - case bfd_reloc_outofrange: - msg = _ ("internal error: out of range error"); - goto common_error; - - case bfd_reloc_notsupported: - msg = _ ("internal error: unsupported relocation error"); - goto common_error; - - case bfd_reloc_dangerous: - msg = _ ("internal error: dangerous error"); - goto common_error; - - default: - msg = _ ("internal error: unknown error"); - /* fall through */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return false; - break; - } - } - } - - return true; -} - -/* Function to keep ARM specific flags in the ELF header. */ -static boolean -elf32_arm_set_private_flags (abfd, flags) - bfd *abfd; - flagword flags; -{ - if (elf_flags_init (abfd) - && elf_elfheader (abfd)->e_flags != flags) - { - if (flags & EF_INTERWORK) - _bfd_error_handler (_ ("\ -Warning: Not setting interwork flag of %s since it has already been specified as non-interworking"), - bfd_get_filename (abfd)); - else - _bfd_error_handler (_ ("\ -Warning: Clearing the interwork flag of %s due to outside request"), - bfd_get_filename (abfd)); - } - else - { - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = true; - } - - return true; -} - -/* Copy backend specific data from one object module to another */ -static boolean -elf32_arm_copy_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - flagword in_flags; - flagword out_flags; - - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - in_flags = elf_elfheader (ibfd)->e_flags; - out_flags = elf_elfheader (obfd)->e_flags; - - if (elf_flags_init (obfd) && in_flags != out_flags) - { - /* Cannot mix PIC and non-PIC code. */ - if ((in_flags & EF_PIC) != (out_flags & EF_PIC)) - return false; - - /* Cannot mix APCS26 and APCS32 code. */ - if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26)) - return false; - - /* Cannot mix float APCS and non-float APCS code. */ - if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT)) - return false; - - /* If the src and dest have different interworking flags - then turn off the interworking bit. */ - if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK)) - { - if (out_flags & EF_INTERWORK) - _bfd_error_handler (_ ("\ -Warning: Clearing the interwork flag in %s because non-interworking code in %s has been linked with it"), - bfd_get_filename (obfd), bfd_get_filename (ibfd)); - - in_flags &= ~EF_INTERWORK; - } - } - - elf_elfheader (obfd)->e_flags = in_flags; - elf_flags_init (obfd) = true; - - return true; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ -static boolean -elf32_arm_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - flagword out_flags; - flagword in_flags; - - if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - /* Check if we have the same endianess */ - if ( ibfd->xvec->byteorder != obfd->xvec->byteorder - && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN - && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) - { - (*_bfd_error_handler) - (_("%s: compiled for a %s endian system and target is %s endian"), - bfd_get_filename (ibfd), - bfd_big_endian (ibfd) ? "big" : "little", - bfd_big_endian (obfd) ? "big" : "little"); - - bfd_set_error (bfd_error_wrong_format); - return false; - } - - /* The input BFD must have had its flags initialised. */ - /* The following seems bogus to me -- The flags are initialized in - the assembler but I don't think an elf_flags_init field is - written into the object */ - /* BFD_ASSERT (elf_flags_init (ibfd)); */ - - in_flags = elf_elfheader (ibfd)->e_flags; - out_flags = elf_elfheader (obfd)->e_flags; - - if (!elf_flags_init (obfd)) - { - /* If the input is the default architecture then do not - bother setting the flags for the output architecture, - instead allow future merges to do this. If no future - merges ever set these flags then they will retain their - unitialised values, which surprise surprise, correspond - to the default values. */ - if (bfd_get_arch_info (ibfd)->the_default) - return true; - - elf_flags_init (obfd) = true; - elf_elfheader (obfd)->e_flags = in_flags; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_arch_info (obfd)->the_default) - return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); - - return true; - } - - /* Check flag compatibility. */ - if (in_flags == out_flags) - return true; - - /* Complain about various flag mismatches. */ - - if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26)) - _bfd_error_handler (_ ("\ -Error: %s compiled for APCS-%d, whereas %s is compiled for APCS-%d"), - bfd_get_filename (ibfd), - in_flags & EF_APCS_26 ? 26 : 32, - bfd_get_filename (obfd), - out_flags & EF_APCS_26 ? 26 : 32); - - if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT)) - _bfd_error_handler (_ ("\ -Error: %s passes floats in %s registers, whereas %s passes them in %s registers"), - bfd_get_filename (ibfd), - in_flags & EF_APCS_FLOAT ? _ ("float") : _ ("integer"), - bfd_get_filename (obfd), - out_flags & EF_APCS_26 ? _ ("float") : _ ("integer")); - - if ((in_flags & EF_PIC) != (out_flags & EF_PIC)) - _bfd_error_handler (_ ("\ -Error: %s is compiled as position %s code, whereas %s is not"), - bfd_get_filename (ibfd), - in_flags & EF_PIC ? _ ("independent") : _ ("dependent"), - bfd_get_filename (obfd)); - - /* Interworking mismatch is only a warning. */ - if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK)) - { - _bfd_error_handler (_ ("\ -Warning: %s %s interworking, whereas %s %s"), - bfd_get_filename (ibfd), - in_flags & EF_INTERWORK ? _ ("supports") : _ ("does not support"), - bfd_get_filename (obfd), - out_flags & EF_INTERWORK ? _ ("does not") : _ ("does")); - return true; - } - - return false; -} - -/* Display the flags field */ -static boolean -elf32_arm_print_private_bfd_data (abfd, ptr) - bfd *abfd; - PTR ptr; -{ - FILE *file = (FILE *) ptr; - - BFD_ASSERT (abfd != NULL && ptr != NULL); - - /* Print normal ELF private data. */ - _bfd_elf_print_private_bfd_data (abfd, ptr); - - /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ - - /* xgettext:c-format */ - fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags); - - if (elf_elfheader (abfd)->e_flags & EF_INTERWORK) - fprintf (file, _ (" [interworking enabled]")); - else - fprintf (file, _ (" [interworking not enabled]")); - - if (elf_elfheader (abfd)->e_flags & EF_APCS_26) - fprintf (file, _ (" [APCS-26]")); - else - fprintf (file, _ (" [APCS-32]")); - - if (elf_elfheader (abfd)->e_flags & EF_APCS_FLOAT) - fprintf (file, _ (" [floats passed in float registers]")); - else - fprintf (file, _ (" [floats passed in integer registers]")); - - if (elf_elfheader (abfd)->e_flags & EF_PIC) - fprintf (file, _ (" [position independent]")); - else - fprintf (file, _ (" [absolute position]")); - - fputc ('\n', file); - - return true; -} - -static int -elf32_arm_get_symbol_type (elf_sym, type) - Elf_Internal_Sym * elf_sym; - int type; -{ - switch (ELF_ST_TYPE (elf_sym->st_info)) - { - case STT_ARM_TFUNC: - return ELF_ST_TYPE (elf_sym->st_info); - break; - case STT_ARM_16BIT: - /* If the symbol is not an object, return the STT_ARM_16BIT flag. - This allows us to distinguish between data used by Thumb instructions - and non-data (which is probably code) inside Thumb regions of an - executable. */ - if (type != STT_OBJECT) - return ELF_ST_TYPE (elf_sym->st_info); - break; - } - - return type; -} - -static asection * -elf32_arm_gc_mark_hook (abfd, info, rel, h, sym) - bfd *abfd; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - Elf_Internal_Rela *rel; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; -{ - if (h != NULL) - { - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_ARM_GNU_VTINHERIT: - case R_ARM_GNU_VTENTRY: - break; - - default: - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; - - case bfd_link_hash_common: - return h->root.u.c.p->section; - - default: - break; - } - } - } - else - { - if (!(elf_bad_symtab (abfd) - && ELF_ST_BIND (sym->st_info) != STB_LOCAL) - && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) - && sym->st_shndx != SHN_COMMON)) - { - return bfd_section_from_elf_index (abfd, sym->st_shndx); - } - } - return NULL; -} - -/* Update the got entry reference counts for the section being removed. */ - -static boolean -elf32_arm_gc_sweep_hook (abfd, info, sec, relocs) - bfd *abfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - asection *sec ATTRIBUTE_UNUSED; - const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; -{ - /* We don't support garbage collection of GOT and PLT relocs yet. */ - return true; -} - -/* Look through the relocs for a section during the first phase. */ - -static boolean -elf32_arm_check_relocs (abfd, info, sec, relocs) - bfd * abfd; - struct bfd_link_info * info; - asection * sec; - const Elf_Internal_Rela * relocs; -{ - Elf_Internal_Shdr * symtab_hdr; - struct elf_link_hash_entry ** sym_hashes; - struct elf_link_hash_entry ** sym_hashes_end; - const Elf_Internal_Rela * rel; - const Elf_Internal_Rela * rel_end; - bfd * dynobj; - asection * sgot, *srelgot, *sreloc; - bfd_vma * local_got_offsets; - - if (info->relocateable) - return true; - - sgot = srelgot = sreloc = NULL; - - dynobj = elf_hash_table (info)->dynobj; - local_got_offsets = elf_local_got_offsets (abfd); - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); - if (!elf_bad_symtab (abfd)) - sym_hashes_end -= symtab_hdr->sh_info; - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - struct elf_link_hash_entry *h; - unsigned long r_symndx; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - - /* Some relocs require a global offset table. */ - if (dynobj == NULL) - { - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_ARM_GOT32: - case R_ARM_GOTOFF: - case R_ARM_GOTPC: - elf_hash_table (info)->dynobj = dynobj = abfd; - if (! _bfd_elf_create_got_section (dynobj, info)) - return false; - break; - - default: - break; - } - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_ARM_GOT32: - /* This symbol requires a global offset table entry. */ - if (sgot == NULL) - { - sgot = bfd_get_section_by_name (dynobj, ".got"); - BFD_ASSERT (sgot != NULL); - } - - /* Get the got relocation section if necessary. */ - if (srelgot == NULL - && (h != NULL || info->shared)) - { - srelgot = bfd_get_section_by_name (dynobj, ".rel.got"); - - /* If no got relocation section, make one and initialize. */ - if (srelgot == NULL) - { - srelgot = bfd_make_section (dynobj, ".rel.got"); - if (srelgot == NULL - || ! bfd_set_section_flags (dynobj, srelgot, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)) - || ! bfd_set_section_alignment (dynobj, srelgot, 2)) - return false; - } - } - - if (h != NULL) - { - if (h->got.offset != (bfd_vma) -1) - /* We have already allocated space in the .got. */ - break; - - h->got.offset = sgot->_raw_size; - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; - - srelgot->_raw_size += sizeof (Elf32_External_Rel); - } - else - { - /* This is a global offset table entry for a local - symbol. */ - if (local_got_offsets == NULL) - { - size_t size; - register unsigned int i; - - size = symtab_hdr->sh_info * sizeof (bfd_vma); - local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); - if (local_got_offsets == NULL) - return false; - elf_local_got_offsets (abfd) = local_got_offsets; - for (i = 0; i < symtab_hdr->sh_info; i++) - local_got_offsets[i] = (bfd_vma) -1; - } - - if (local_got_offsets[r_symndx] != (bfd_vma) -1) - /* We have already allocated space in the .got. */ - break; - - local_got_offsets[r_symndx] = sgot->_raw_size; - - if (info->shared) - /* If we are generating a shared object, we need to - output a R_ARM_RELATIVE reloc so that the dynamic - linker can adjust this GOT entry. */ - srelgot->_raw_size += sizeof (Elf32_External_Rel); - } - - sgot->_raw_size += 4; - break; - - case R_ARM_PLT32: - /* This symbol requires a procedure linkage table entry. We - actually build the entry in adjust_dynamic_symbol, - because this might be a case of linking PIC code which is - never referenced by a dynamic object, in which case we - don't need to generate a procedure linkage table entry - after all. */ - - /* If this is a local symbol, we resolve it directly without - creating a procedure linkage table entry. */ - if (h == NULL) - continue; - - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - break; - - case R_ARM_ABS32: - case R_ARM_REL32: - case R_ARM_PC24: - /* If we are creating a shared library, and this is a reloc - against a global symbol, or a non PC relative reloc - against a local symbol, then we need to copy the reloc - into the shared library. However, if we are linking with - -Bsymbolic, we do not need to copy a reloc against a - global symbol which is defined in an object we are - including in the link (i.e., DEF_REGULAR is set). At - this point we have not seen all the input files, so it is - possible that DEF_REGULAR is not set now but will be set - later (it is never cleared). We account for that - possibility below by storing information in the - pcrel_relocs_copied field of the hash table entry. */ - if (info->shared - && (ELF32_R_TYPE (rel->r_info) != R_ARM_PC24 - || (h != NULL - && (! info->symbolic - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)))) - { - /* When creating a shared object, we must copy these - reloc types into the output file. We create a reloc - section in dynobj and make room for this reloc. */ - if (sreloc == NULL) - { - const char * name; - - name = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); - if (name == NULL) - return false; - - BFD_ASSERT (strncmp (name, ".rel", 4) == 0 - && strcmp (bfd_get_section_name (abfd, sec), - name + 4) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - if (sreloc == NULL) - { - flagword flags; - - sreloc = bfd_make_section (dynobj, name); - flags = (SEC_HAS_CONTENTS | SEC_READONLY - | SEC_IN_MEMORY | SEC_LINKER_CREATED); - if ((sec->flags & SEC_ALLOC) != 0) - flags |= SEC_ALLOC | SEC_LOAD; - if (sreloc == NULL - || ! bfd_set_section_flags (dynobj, sreloc, flags) - || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return false; - } - } - - sreloc->_raw_size += sizeof (Elf32_External_Rel); - /* If we are linking with -Bsymbolic, and this is a - global symbol, we count the number of PC relative - relocations we have entered for this symbol, so that - we can discard them again if the symbol is later - defined by a regular object. Note that this function - is only called if we are using an elf_i386 linker - hash table, which means that h is really a pointer to - an elf_i386_link_hash_entry. */ - if (h != NULL && info->symbolic - && ELF32_R_TYPE (rel->r_info) == R_ARM_PC24) - { - struct elf32_arm_link_hash_entry * eh; - struct elf32_arm_pcrel_relocs_copied * p; - - eh = (struct elf32_arm_link_hash_entry *) h; - - for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) - if (p->section == sreloc) - break; - - if (p == NULL) - { - p = ((struct elf32_arm_pcrel_relocs_copied *) - bfd_alloc (dynobj, sizeof * p)); - - if (p == NULL) - return false; - p->next = eh->pcrel_relocs_copied; - eh->pcrel_relocs_copied = p; - p->section = sreloc; - p->count = 0; - } - - ++p->count; - } - } - break; - - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_ARM_GNU_VTINHERIT: - if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) - return false; - break; - - /* This relocation describes which C++ vtable entries are actually - used. Record for later use during GC. */ - case R_ARM_GNU_VTENTRY: - if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) - return false; - break; - } - } - - return true; -} - - -/* Find the nearest line to a particular section and offset, for error - reporting. This code is a duplicate of the code in elf.c, except - that it also accepts STT_ARM_TFUNC as a symbol that names a function. */ - -static boolean -elf32_arm_find_nearest_line - (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) - bfd * abfd; - asection * section; - asymbol ** symbols; - bfd_vma offset; - CONST char ** filename_ptr; - CONST char ** functionname_ptr; - unsigned int * line_ptr; -{ - boolean found; - const char * filename; - asymbol * func; - bfd_vma low_func; - asymbol ** p; - - if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr, 0)) - return true; - - if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, - &found, filename_ptr, - functionname_ptr, line_ptr, - &elf_tdata (abfd)->line_info)) - return false; - - if (found) - return true; - - if (symbols == NULL) - return false; - - filename = NULL; - func = NULL; - low_func = 0; - - for (p = symbols; *p != NULL; p++) - { - elf_symbol_type *q; - - q = (elf_symbol_type *) *p; - - if (bfd_get_section (&q->symbol) != section) - continue; - - switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) - { - default: - break; - case STT_FILE: - filename = bfd_asymbol_name (&q->symbol); - break; - case STT_NOTYPE: - case STT_FUNC: - case STT_ARM_TFUNC: - if (q->symbol.section == section - && q->symbol.value >= low_func - && q->symbol.value <= offset) - { - func = (asymbol *) q; - low_func = q->symbol.value; - } - break; - } - } - - if (func == NULL) - return false; - - *filename_ptr = filename; - *functionname_ptr = bfd_asymbol_name (func); - *line_ptr = 0; - - return true; -} - -/* Adjust a symbol defined by a dynamic object and referenced by a - regular object. The current definition is in some section of the - dynamic object, but we're not including those sections. We have to - change the definition to something the rest of the link can - understand. */ - -static boolean -elf32_arm_adjust_dynamic_symbol (info, h) - struct bfd_link_info * info; - struct elf_link_hash_entry * h; -{ - bfd * dynobj; - asection * s; - unsigned int power_of_two; - - dynobj = elf_hash_table (info)->dynobj; - - /* Make sure we know what is going on here. */ - BFD_ASSERT (dynobj != NULL - && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) - || h->weakdef != NULL - || ((h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_REF_REGULAR) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0))); - - /* If this is a function, put it in the procedure linkage table. We - will fill in the contents of the procedure linkage table later, - when we know the address of the .got section. */ - if (h->type == STT_FUNC - || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) - { - if (! info->shared - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) - { - /* This case can occur if we saw a PLT32 reloc in an input - file, but the symbol was never referred to by a dynamic - object. In such a case, we don't actually need to build - a procedure linkage table, and we can just do a PC32 - reloc instead. */ - BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); - return true; - } - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; - } - - s = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (s != NULL); - - /* If this is the first .plt entry, make room for the special - first entry. */ - if (s->_raw_size == 0) - s->_raw_size += PLT_ENTRY_SIZE; - - /* If this symbol is not defined in a regular file, and we are - not generating a shared library, then set the symbol to this - location in the .plt. This is required to make function - pointers compare as equal between the normal executable and - the shared library. */ - if (! info->shared - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - { - h->root.u.def.section = s; - h->root.u.def.value = s->_raw_size; - } - - h->plt.offset = s->_raw_size; - - /* Make room for this entry. */ - s->_raw_size += PLT_ENTRY_SIZE; - - /* We also need to make an entry in the .got.plt section, which - will be placed in the .got section by the linker script. */ - - s = bfd_get_section_by_name (dynobj, ".got.plt"); - BFD_ASSERT (s != NULL); - s->_raw_size += 4; - - /* We also need to make an entry in the .rel.plt section. */ - - s = bfd_get_section_by_name (dynobj, ".rel.plt"); - BFD_ASSERT (s != NULL); - s->_raw_size += sizeof (Elf32_External_Rel); - - return true; - } - - /* If this is a weak symbol, and there is a real definition, the - processor independent code will have arranged for us to see the - real definition first, and we can just use the same value. */ - if (h->weakdef != NULL) - { - BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined - || h->weakdef->root.type == bfd_link_hash_defweak); - h->root.u.def.section = h->weakdef->root.u.def.section; - h->root.u.def.value = h->weakdef->root.u.def.value; - return true; - } - - /* This is a reference to a symbol defined by a dynamic object which - is not a function. */ - - /* If we are creating a shared library, we must presume that the - only references to the symbol are via the global offset table. - For such cases we need not do anything here; the relocations will - be handled correctly by relocate_section. */ - if (info->shared) - return true; - - /* We must allocate the symbol in our .dynbss section, which will - become part of the .bss section of the executable. There will be - an entry for this symbol in the .dynsym section. The dynamic - object will contain position independent code, so all references - from the dynamic object to this symbol will go through the global - offset table. The dynamic linker will use the .dynsym entry to - determine the address it must put in the global offset table, so - both the dynamic object and the regular object will refer to the - same memory location for the variable. */ - - s = bfd_get_section_by_name (dynobj, ".dynbss"); - BFD_ASSERT (s != NULL); - - /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to - copy the initial value out of the dynamic object and into the - runtime process image. We need to remember the offset into the - .rel.bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) - { - asection *srel; - - srel = bfd_get_section_by_name (dynobj, ".rel.bss"); - BFD_ASSERT (srel != NULL); - srel->_raw_size += sizeof (Elf32_External_Rel); - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; - } - - /* We need to figure out the alignment required for this symbol. I - have no idea how ELF linkers handle this. */ - power_of_two = bfd_log2 (h->size); - if (power_of_two > 3) - power_of_two = 3; - - /* Apply the required alignment. */ - s->_raw_size = BFD_ALIGN (s->_raw_size, - (bfd_size_type) (1 << power_of_two)); - if (power_of_two > bfd_get_section_alignment (dynobj, s)) - { - if (! bfd_set_section_alignment (dynobj, s, power_of_two)) - return false; - } - - /* Define the symbol as being at this point in the section. */ - h->root.u.def.section = s; - h->root.u.def.value = s->_raw_size; - - /* Increment the section size to make room for the symbol. */ - s->_raw_size += h->size; - - return true; -} - -/* Set the sizes of the dynamic sections. */ - -static boolean -elf32_arm_size_dynamic_sections (output_bfd, info) - bfd * output_bfd; - struct bfd_link_info * info; -{ - bfd * dynobj; - asection * s; - boolean plt; - boolean relocs; - boolean reltext; - - 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 .rel.got section. - However, if we are not creating the dynamic sections, we will - not actually use these entries. Reset the size of .rel.got, - which will cause it to get stripped from the output file - below. */ - s = bfd_get_section_by_name (dynobj, ".rel.got"); - if (s != NULL) - s->_raw_size = 0; - } - - /* If this is a -Bsymbolic shared link, then we need to discard all - PC relative relocs against symbols defined in a regular object. - We allocated space for them in the check_relocs routine, but we - will not fill them in in the relocate_section routine. */ - if (info->shared && info->symbolic) - elf32_arm_link_hash_traverse (elf32_arm_hash_table (info), - elf32_arm_discard_copies, - (PTR) NULL); - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - plt = false; - relocs = false; - reltext = false; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char * name; - boolean strip; - - 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 = false; - - if (strcmp (name, ".plt") == 0) - { - if (s->_raw_size == 0) - { - /* Strip this section if we don't need it; see the - comment below. */ - strip = true; - } - else - { - /* Remember whether there is a PLT. */ - plt = true; - } - } - else if (strncmp (name, ".rel", 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 .rel.bss and - .rel.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 .rel.plt. */ - if (strcmp (name, ".rel.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 .rel.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, ".got", 4) != 0) - { - /* It's not one of our sections, so don't allocate space. */ - continue; - } - - if (strip) - { - asection ** spp; - - for (spp = &s->output_section->owner->sections; - *spp != s->output_section; - spp = &(*spp)->next) - ; - *spp = s->output_section->next; - --s->output_section->owner->section_count; - - continue; - } - - /* Allocate memory for the section contents. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - return false; - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in elf32_arm_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_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) - return false; - } - - if (plt) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL) - || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) - return false; - } - - if (relocs) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT, - sizeof (Elf32_External_Rel))) - return false; - } - - if (reltext) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) - return false; - } - } - - return true; -} - -/* This function is called via elf32_arm_link_hash_traverse if we are - creating a shared object with -Bsymbolic. It discards the space - allocated to copy PC relative relocs against symbols which are - defined in regular objects. We allocated space for them in the - check_relocs routine, but we won't fill them in in the - relocate_section routine. */ - -static boolean -elf32_arm_discard_copies (h, ignore) - struct elf32_arm_link_hash_entry * h; - PTR ignore ATTRIBUTE_UNUSED; -{ - struct elf32_arm_pcrel_relocs_copied * s; - - /* We only discard relocs for symbols defined in a regular object. */ - if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - return true; - - for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) - s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel); - - return true; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static boolean -elf32_arm_finish_dynamic_symbol (output_bfd, info, h, sym) - bfd * output_bfd; - struct bfd_link_info * info; - struct elf_link_hash_entry * h; - Elf_Internal_Sym * sym; -{ - bfd * dynobj; - - dynobj = elf_hash_table (info)->dynobj; - - if (h->plt.offset != (bfd_vma) -1) - { - asection * splt; - asection * sgot; - asection * srel; - bfd_vma plt_index; - bfd_vma got_offset; - Elf_Internal_Rel rel; - - /* This symbol has an entry in the procedure linkage table. Set - it up. */ - - BFD_ASSERT (h->dynindx != -1); - - splt = bfd_get_section_by_name (dynobj, ".plt"); - sgot = bfd_get_section_by_name (dynobj, ".got.plt"); - srel = bfd_get_section_by_name (dynobj, ".rel.plt"); - BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); - - /* Get the index in the procedure linkage table which - corresponds to this symbol. This is the index of this symbol - in all the symbols for which we are making plt entries. The - first entry in the procedure linkage table is reserved. */ - plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; - - /* Get the offset into the .got table of the entry that - corresponds to this function. Each .got entry is 4 bytes. - The first three are reserved. */ - got_offset = (plt_index + 3) * 4; - - /* Fill in the entry in the procedure linkage table. */ - memcpy (splt->contents + h->plt.offset, - elf32_arm_plt_entry, - PLT_ENTRY_SIZE); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset - + got_offset - - splt->output_section->vma - - splt->output_offset - - h->plt.offset - 12), - splt->contents + h->plt.offset + 12); - - /* Fill in the entry in the global offset table. */ - bfd_put_32 (output_bfd, - (splt->output_section->vma - + splt->output_offset), - sgot->contents + got_offset); - - /* Fill in the entry in the .rel.plt section. */ - rel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + got_offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); - bfd_elf32_swap_reloc_out (output_bfd, &rel, - ((Elf32_External_Rel *) srel->contents - + plt_index)); - - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - { - /* Mark the symbol as undefined, rather than as defined in - the .plt section. Leave the value alone. */ - sym->st_shndx = SHN_UNDEF; - } - } - - if (h->got.offset != (bfd_vma) -1) - { - asection * sgot; - asection * srel; - Elf_Internal_Rel rel; - - /* This symbol has an entry in the global offset table. Set it - up. */ - - sgot = bfd_get_section_by_name (dynobj, ".got"); - srel = bfd_get_section_by_name (dynobj, ".rel.got"); - BFD_ASSERT (sgot != NULL && srel != NULL); - - rel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + (h->got.offset &~ 1)); - - /* If this is a -Bsymbolic link, and the symbol is defined - locally, we just want to emit a RELATIVE reloc. The entry in - the global offset table will already have been initialized in - the relocate_section function. */ - if (info->shared - && (info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) - rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); - else - { - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); - } - - bfd_elf32_swap_reloc_out (output_bfd, &rel, - ((Elf32_External_Rel *) srel->contents - + srel->reloc_count)); - ++srel->reloc_count; - } - - if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) - { - asection * s; - Elf_Internal_Rel rel; - - /* This symbol needs a copy reloc. Set it up. */ - - BFD_ASSERT (h->dynindx != -1 - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)); - - s = bfd_get_section_by_name (h->root.u.def.section->owner, - ".rel.bss"); - BFD_ASSERT (s != NULL); - - rel.r_offset = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); - bfd_elf32_swap_reloc_out (output_bfd, &rel, - ((Elf32_External_Rel *) s->contents - + s->reloc_count)); - ++s->reloc_count; - } - - /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ - if (strcmp (h->root.root.string, "_DYNAMIC") == 0 - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) - sym->st_shndx = SHN_ABS; - - return true; -} - -/* Finish up the dynamic sections. */ - -static boolean -elf32_arm_finish_dynamic_sections (output_bfd, info) - bfd * output_bfd; - struct bfd_link_info * info; -{ - bfd * dynobj; - asection * sgot; - asection * sdyn; - - dynobj = elf_hash_table (info)->dynobj; - - sgot = bfd_get_section_by_name (dynobj, ".got.plt"); - BFD_ASSERT (sgot != NULL); - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); - - dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - const char * name; - asection * s; - - bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - default: - break; - - case DT_PLTGOT: - name = ".got"; - goto get_vma; - case DT_JMPREL: - name = ".rel.plt"; - get_vma: - s = bfd_get_section_by_name (output_bfd, name); - BFD_ASSERT (s != NULL); - dyn.d_un.d_ptr = s->vma; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_PLTRELSZ: - s = bfd_get_section_by_name (output_bfd, ".rel.plt"); - BFD_ASSERT (s != NULL); - if (s->_cooked_size != 0) - dyn.d_un.d_val = s->_cooked_size; - else - dyn.d_un.d_val = s->_raw_size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_RELSZ: - /* My reading of the SVR4 ABI indicates that the - procedure linkage table relocs (DT_JMPREL) should be - included in the overall relocs (DT_REL). This is - what Solaris does. However, UnixWare can not handle - that case. Therefore, we override the DT_RELSZ entry - here to make it not include the JMPREL relocs. Since - the linker script arranges for .rel.plt to follow all - other relocation sections, we don't have to worry - about changing the DT_REL entry. */ - s = bfd_get_section_by_name (output_bfd, ".rel.plt"); - if (s != NULL) - { - if (s->_cooked_size != 0) - dyn.d_un.d_val -= s->_cooked_size; - else - dyn.d_un.d_val -= s->_raw_size; - } - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - } - } - - /* Fill in the first entry in the procedure linkage table. */ - if (splt->_raw_size > 0) - memcpy (splt->contents, elf32_arm_plt0_entry, PLT_ENTRY_SIZE); - - /* UnixWare sets the entsize of .plt to 4, although that doesn't - really seem like the right value. */ - elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; - } - - /* Fill in the first three entries in the global offset table. */ - if (sgot->_raw_size > 0) - { - if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); - else - bfd_put_32 (output_bfd, - sdyn->output_section->vma + sdyn->output_offset, - sgot->contents); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); - } - - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - - return true; -} - -static void -elf32_arm_post_process_headers (abfd, link_info) - bfd * abfd; - struct bfd_link_info * link_info ATTRIBUTE_UNUSED; -{ - Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ - - i_ehdrp = elf_elfheader (abfd); - - i_ehdrp->e_ident[EI_OSABI] = ARM_ELF_OS_ABI_VERSION; - i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; -} - - -#define ELF_ARCH bfd_arch_arm -#define ELF_MACHINE_CODE EM_ARM -#define ELF_MAXPAGESIZE 0x8000 - - -#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data -#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data -#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags -#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data -#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create -#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup -#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line - -#define elf_backend_get_symbol_type elf32_arm_get_symbol_type -#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook -#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook -#define elf_backend_check_relocs elf32_arm_check_relocs -#define elf_backend_relocate_section elf32_arm_relocate_section -#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol -#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections -#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections -#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections -#define elf_backend_post_process_headers elf32_arm_post_process_headers - -#define elf_backend_can_gc_sections 1 -#define elf_backend_plt_readonly 1 -#define elf_backend_want_got_plt 1 -#define elf_backend_want_plt_sym 0 - -#define elf_backend_got_header_size 12 -#define elf_backend_plt_header_size PLT_ENTRY_SIZE - -#include "elf32-target.h" |