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author | Dan Albert <danalbert@google.com> | 2015-06-17 15:33:58 -0700 |
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committer | Dan Albert <danalbert@google.com> | 2015-06-17 15:33:58 -0700 |
commit | 7a1d76c6c5b354abbba43308d5061eb6ff96d3ea (patch) | |
tree | 78a639d039e517565afa35d7af021a6967bec0d9 /binutils-2.19/bfd/elf32-m68hc1x.c | |
parent | c39479f4ab4d372b518957871e1f205a03e7c3d6 (diff) | |
download | toolchain_binutils-7a1d76c6c5b354abbba43308d5061eb6ff96d3ea.zip toolchain_binutils-7a1d76c6c5b354abbba43308d5061eb6ff96d3ea.tar.gz toolchain_binutils-7a1d76c6c5b354abbba43308d5061eb6ff96d3ea.tar.bz2 |
Remove old versions of binutils.
Change-Id: If634d8d30cfa8c88ca3ba59691a0df4ee5596f85
Diffstat (limited to 'binutils-2.19/bfd/elf32-m68hc1x.c')
-rw-r--r-- | binutils-2.19/bfd/elf32-m68hc1x.c | 1340 |
1 files changed, 0 insertions, 1340 deletions
diff --git a/binutils-2.19/bfd/elf32-m68hc1x.c b/binutils-2.19/bfd/elf32-m68hc1x.c deleted file mode 100644 index 2660c89..0000000 --- a/binutils-2.19/bfd/elf32-m68hc1x.c +++ /dev/null @@ -1,1340 +0,0 @@ -/* Motorola 68HC11/HC12-specific support for 32-bit ELF - Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 - Free Software Foundation, Inc. - Contributed by Stephane Carrez (stcarrez@nerim.fr) - - 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 3 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., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -#include "sysdep.h" -#include "bfd.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf32-m68hc1x.h" -#include "elf/m68hc11.h" -#include "opcode/m68hc11.h" - - -#define m68hc12_stub_hash_lookup(table, string, create, copy) \ - ((struct elf32_m68hc11_stub_hash_entry *) \ - bfd_hash_lookup ((table), (string), (create), (copy))) - -static struct elf32_m68hc11_stub_hash_entry* m68hc12_add_stub - (const char *stub_name, - asection *section, - struct m68hc11_elf_link_hash_table *htab); - -static struct bfd_hash_entry *stub_hash_newfunc - (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); - -static void m68hc11_elf_set_symbol (bfd* abfd, struct bfd_link_info *info, - const char* name, bfd_vma value, - asection* sec); - -static bfd_boolean m68hc11_elf_export_one_stub - (struct bfd_hash_entry *gen_entry, void *in_arg); - -static void scan_sections_for_abi (bfd*, asection*, PTR); - -struct m68hc11_scan_param -{ - struct m68hc11_page_info* pinfo; - bfd_boolean use_memory_banks; -}; - - -/* Create a 68HC11/68HC12 ELF linker hash table. */ - -struct m68hc11_elf_link_hash_table* -m68hc11_elf_hash_table_create (bfd *abfd) -{ - struct m68hc11_elf_link_hash_table *ret; - bfd_size_type amt = sizeof (struct m68hc11_elf_link_hash_table); - - ret = (struct m68hc11_elf_link_hash_table *) bfd_malloc (amt); - if (ret == (struct m68hc11_elf_link_hash_table *) NULL) - return NULL; - - memset (ret, 0, amt); - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - _bfd_elf_link_hash_newfunc, - sizeof (struct elf_link_hash_entry))) - { - free (ret); - return NULL; - } - - /* Init the stub hash table too. */ - amt = sizeof (struct bfd_hash_table); - ret->stub_hash_table = (struct bfd_hash_table*) bfd_malloc (amt); - if (ret->stub_hash_table == NULL) - { - free (ret); - return NULL; - } - if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc, - sizeof (struct elf32_m68hc11_stub_hash_entry))) - return NULL; - - ret->stub_bfd = NULL; - ret->stub_section = 0; - ret->add_stub_section = NULL; - ret->sym_sec.abfd = NULL; - - return ret; -} - -/* Free the derived linker hash table. */ - -void -m68hc11_elf_bfd_link_hash_table_free (struct bfd_link_hash_table *hash) -{ - struct m68hc11_elf_link_hash_table *ret - = (struct m68hc11_elf_link_hash_table *) hash; - - bfd_hash_table_free (ret->stub_hash_table); - free (ret->stub_hash_table); - _bfd_generic_link_hash_table_free (hash); -} - -/* Assorted hash table functions. */ - -/* Initialize an entry in the stub hash table. */ - -static struct bfd_hash_entry * -stub_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, - const char *string) -{ - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (entry == NULL) - { - entry = bfd_hash_allocate (table, - sizeof (struct elf32_m68hc11_stub_hash_entry)); - if (entry == NULL) - return entry; - } - - /* Call the allocation method of the superclass. */ - entry = bfd_hash_newfunc (entry, table, string); - if (entry != NULL) - { - struct elf32_m68hc11_stub_hash_entry *eh; - - /* Initialize the local fields. */ - eh = (struct elf32_m68hc11_stub_hash_entry *) entry; - eh->stub_sec = NULL; - eh->stub_offset = 0; - eh->target_value = 0; - eh->target_section = NULL; - } - - return entry; -} - -/* Add a new stub entry to the stub hash. Not all fields of the new - stub entry are initialised. */ - -static struct elf32_m68hc11_stub_hash_entry * -m68hc12_add_stub (const char *stub_name, asection *section, - struct m68hc11_elf_link_hash_table *htab) -{ - struct elf32_m68hc11_stub_hash_entry *stub_entry; - - /* Enter this entry into the linker stub hash table. */ - stub_entry = m68hc12_stub_hash_lookup (htab->stub_hash_table, stub_name, - TRUE, FALSE); - if (stub_entry == NULL) - { - (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), - section->owner, stub_name); - return NULL; - } - - if (htab->stub_section == 0) - { - htab->stub_section = (*htab->add_stub_section) (".tramp", - htab->tramp_section); - } - - stub_entry->stub_sec = htab->stub_section; - stub_entry->stub_offset = 0; - return stub_entry; -} - -/* Hook called by the linker routine which adds symbols from an object - file. We use it for identify far symbols and force a loading of - the trampoline handler. */ - -bfd_boolean -elf32_m68hc11_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, - Elf_Internal_Sym *sym, - const char **namep ATTRIBUTE_UNUSED, - flagword *flagsp ATTRIBUTE_UNUSED, - asection **secp ATTRIBUTE_UNUSED, - bfd_vma *valp ATTRIBUTE_UNUSED) -{ - if (sym->st_other & STO_M68HC12_FAR) - { - struct elf_link_hash_entry *h; - - h = (struct elf_link_hash_entry *) - bfd_link_hash_lookup (info->hash, "__far_trampoline", - FALSE, FALSE, FALSE); - if (h == NULL) - { - struct bfd_link_hash_entry* entry = NULL; - - _bfd_generic_link_add_one_symbol (info, abfd, - "__far_trampoline", - BSF_GLOBAL, - bfd_und_section_ptr, - (bfd_vma) 0, (const char*) NULL, - FALSE, FALSE, &entry); - } - - } - return TRUE; -} - -/* External entry points for sizing and building linker stubs. */ - -/* Set up various things so that we can make a list of input sections - for each output section included in the link. Returns -1 on error, - 0 when no stubs will be needed, and 1 on success. */ - -int -elf32_m68hc11_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) -{ - bfd *input_bfd; - unsigned int bfd_count; - int top_id, top_index; - asection *section; - asection **input_list, **list; - bfd_size_type amt; - asection *text_section; - struct m68hc11_elf_link_hash_table *htab; - - htab = m68hc11_elf_hash_table (info); - - if (bfd_get_flavour (info->output_bfd) != bfd_target_elf_flavour) - return 0; - - /* Count the number of input BFDs and find the top input section id. - Also search for an existing ".tramp" section so that we know - where generated trampolines must go. Default to ".text" if we - can't find it. */ - htab->tramp_section = 0; - text_section = 0; - for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; - input_bfd != NULL; - input_bfd = input_bfd->link_next) - { - bfd_count += 1; - for (section = input_bfd->sections; - section != NULL; - section = section->next) - { - const char* name = bfd_get_section_name (input_bfd, section); - - if (!strcmp (name, ".tramp")) - htab->tramp_section = section; - - if (!strcmp (name, ".text")) - text_section = section; - - if (top_id < section->id) - top_id = section->id; - } - } - htab->bfd_count = bfd_count; - if (htab->tramp_section == 0) - htab->tramp_section = text_section; - - /* We can't use output_bfd->section_count here to find the top output - section index as some sections may have been removed, and - strip_excluded_output_sections doesn't renumber the indices. */ - for (section = output_bfd->sections, top_index = 0; - section != NULL; - section = section->next) - { - if (top_index < section->index) - top_index = section->index; - } - - htab->top_index = top_index; - amt = sizeof (asection *) * (top_index + 1); - input_list = (asection **) bfd_malloc (amt); - htab->input_list = input_list; - if (input_list == NULL) - return -1; - - /* For sections we aren't interested in, mark their entries with a - value we can check later. */ - list = input_list + top_index; - do - *list = bfd_abs_section_ptr; - while (list-- != input_list); - - for (section = output_bfd->sections; - section != NULL; - section = section->next) - { - if ((section->flags & SEC_CODE) != 0) - input_list[section->index] = NULL; - } - - return 1; -} - -/* 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. */ - -bfd_boolean -elf32_m68hc11_size_stubs (bfd *output_bfd, bfd *stub_bfd, - struct bfd_link_info *info, - asection * (*add_stub_section) (const char*, asection*)) -{ - bfd *input_bfd; - asection *section; - Elf_Internal_Sym *local_syms, **all_local_syms; - unsigned int bfd_indx, bfd_count; - bfd_size_type amt; - asection *stub_sec; - - struct m68hc11_elf_link_hash_table *htab = m68hc11_elf_hash_table (info); - - /* Stash our params away. */ - htab->stub_bfd = stub_bfd; - htab->add_stub_section = add_stub_section; - - /* Count the number of input BFDs and find the top input section id. */ - for (input_bfd = info->input_bfds, bfd_count = 0; - input_bfd != NULL; - input_bfd = input_bfd->link_next) - { - bfd_count += 1; - } - - /* We want to read in symbol extension records only once. To do this - we need to read in the local symbols in parallel and save them for - later use; so hold pointers to the local symbols in an array. */ - amt = sizeof (Elf_Internal_Sym *) * bfd_count; - all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt); - if (all_local_syms == NULL) - return FALSE; - - /* Walk over all the input BFDs, swapping in local symbols. */ - for (input_bfd = info->input_bfds, bfd_indx = 0; - input_bfd != NULL; - input_bfd = input_bfd->link_next, bfd_indx++) - { - Elf_Internal_Shdr *symtab_hdr; - - /* We'll need the symbol table in a second. */ - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - if (symtab_hdr->sh_info == 0) - continue; - - /* We need an array of the local symbols attached to the input bfd. */ - local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; - if (local_syms == NULL) - { - local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - /* Cache them for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) local_syms; - } - if (local_syms == NULL) - { - free (all_local_syms); - return FALSE; - } - - all_local_syms[bfd_indx] = local_syms; - } - - for (input_bfd = info->input_bfds, bfd_indx = 0; - input_bfd != NULL; - input_bfd = input_bfd->link_next, bfd_indx++) - { - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Sym *local_syms; - struct elf_link_hash_entry ** sym_hashes; - - sym_hashes = elf_sym_hashes (input_bfd); - - /* 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[bfd_indx]; - - /* Walk over each section attached to the input bfd. */ - for (section = input_bfd->sections; - section != NULL; - section = section->next) - { - Elf_Internal_Rela *internal_relocs, *irelaend, *irela; - - /* If there aren't any relocs, then there's nothing more - to do. */ - if ((section->flags & SEC_RELOC) == 0 - || section->reloc_count == 0) - continue; - - /* If this section is a link-once section that will be - discarded, then don't create any stubs. */ - if (section->output_section == NULL - || section->output_section->owner != output_bfd) - continue; - - /* Get the relocs. */ - internal_relocs - = _bfd_elf_link_read_relocs (input_bfd, section, NULL, - (Elf_Internal_Rela *) NULL, - info->keep_memory); - if (internal_relocs == NULL) - goto error_ret_free_local; - - /* Now examine each relocation. */ - irela = internal_relocs; - irelaend = irela + section->reloc_count; - for (; irela < irelaend; irela++) - { - unsigned int r_type, r_indx; - struct elf32_m68hc11_stub_hash_entry *stub_entry; - asection *sym_sec; - bfd_vma sym_value; - struct elf_link_hash_entry *hash; - const char *stub_name; - Elf_Internal_Sym *sym; - - r_type = ELF32_R_TYPE (irela->r_info); - - /* Only look at 16-bit relocs. */ - if (r_type != (unsigned int) R_M68HC11_16) - continue; - - /* Now determine the call target, its name, value, - section. */ - r_indx = ELF32_R_SYM (irela->r_info); - if (r_indx < symtab_hdr->sh_info) - { - /* It's a local symbol. */ - Elf_Internal_Shdr *hdr; - bfd_boolean is_far; - - sym = local_syms + r_indx; - is_far = (sym && (sym->st_other & STO_M68HC12_FAR)); - if (!is_far) - continue; - - if (sym->st_shndx >= elf_numsections (input_bfd)) - sym_sec = NULL; - else - { - hdr = elf_elfsections (input_bfd)[sym->st_shndx]; - sym_sec = hdr->bfd_section; - } - stub_name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, - sym->st_name)); - sym_value = sym->st_value; - hash = NULL; - } - else - { - /* It's an external symbol. */ - int e_indx; - - e_indx = r_indx - symtab_hdr->sh_info; - hash = (struct elf_link_hash_entry *) - (sym_hashes[e_indx]); - - while (hash->root.type == bfd_link_hash_indirect - || hash->root.type == bfd_link_hash_warning) - hash = ((struct elf_link_hash_entry *) - hash->root.u.i.link); - - if (hash->root.type == bfd_link_hash_defined - || hash->root.type == bfd_link_hash_defweak - || hash->root.type == bfd_link_hash_new) - { - if (!(hash->other & STO_M68HC12_FAR)) - continue; - } - else if (hash->root.type == bfd_link_hash_undefweak) - { - continue; - } - else if (hash->root.type == bfd_link_hash_undefined) - { - continue; - } - else - { - bfd_set_error (bfd_error_bad_value); - goto error_ret_free_internal; - } - sym_sec = hash->root.u.def.section; - sym_value = hash->root.u.def.value; - stub_name = hash->root.root.string; - } - - if (!stub_name) - goto error_ret_free_internal; - - stub_entry = m68hc12_stub_hash_lookup - (htab->stub_hash_table, - stub_name, - FALSE, FALSE); - if (stub_entry == NULL) - { - if (add_stub_section == 0) - continue; - - stub_entry = m68hc12_add_stub (stub_name, section, htab); - if (stub_entry == NULL) - { - error_ret_free_internal: - if (elf_section_data (section)->relocs == NULL) - free (internal_relocs); - goto error_ret_free_local; - } - } - - stub_entry->target_value = sym_value; - stub_entry->target_section = sym_sec; - } - - /* We're done with the internal relocs, free them. */ - if (elf_section_data (section)->relocs == NULL) - free (internal_relocs); - } - } - - if (add_stub_section) - { - /* OK, we've added some stubs. Find out the new size of the - stub sections. */ - for (stub_sec = htab->stub_bfd->sections; - stub_sec != NULL; - stub_sec = stub_sec->next) - { - stub_sec->size = 0; - } - - bfd_hash_traverse (htab->stub_hash_table, htab->size_one_stub, htab); - } - free (all_local_syms); - return TRUE; - - error_ret_free_local: - free (all_local_syms); - return FALSE; -} - -/* Export the trampoline addresses in the symbol table. */ -static bfd_boolean -m68hc11_elf_export_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) -{ - struct bfd_link_info *info; - struct m68hc11_elf_link_hash_table *htab; - struct elf32_m68hc11_stub_hash_entry *stub_entry; - char* name; - bfd_boolean result; - - info = (struct bfd_link_info *) in_arg; - htab = m68hc11_elf_hash_table (info); - - /* Massage our args to the form they really have. */ - stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry; - - /* Generate the trampoline according to HC11 or HC12. */ - result = (* htab->build_one_stub) (gen_entry, in_arg); - - /* Make a printable name that does not conflict with the real function. */ - name = alloca (strlen (stub_entry->root.string) + 16); - sprintf (name, "tramp.%s", stub_entry->root.string); - - /* Export the symbol for debugging/disassembling. */ - m68hc11_elf_set_symbol (htab->stub_bfd, info, name, - stub_entry->stub_offset, - stub_entry->stub_sec); - return result; -} - -/* Export a symbol or set its value and section. */ -static void -m68hc11_elf_set_symbol (bfd *abfd, struct bfd_link_info *info, - const char *name, bfd_vma value, asection *sec) -{ - struct elf_link_hash_entry *h; - - h = (struct elf_link_hash_entry *) - bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, FALSE); - if (h == NULL) - { - _bfd_generic_link_add_one_symbol (info, abfd, - name, - BSF_GLOBAL, - sec, - value, - (const char*) NULL, - TRUE, FALSE, NULL); - } - else - { - h->root.type = bfd_link_hash_defined; - h->root.u.def.value = value; - h->root.u.def.section = sec; - } -} - - -/* 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 function is called via m68hc12elf_finish in the - linker. */ - -bfd_boolean -elf32_m68hc11_build_stubs (bfd *abfd, struct bfd_link_info *info) -{ - asection *stub_sec; - struct bfd_hash_table *table; - struct m68hc11_elf_link_hash_table *htab; - struct m68hc11_scan_param param; - - m68hc11_elf_get_bank_parameters (info); - htab = m68hc11_elf_hash_table (info); - - for (stub_sec = htab->stub_bfd->sections; - stub_sec != NULL; - stub_sec = stub_sec->next) - { - bfd_size_type size; - - /* Allocate memory to hold the linker stubs. */ - size = stub_sec->size; - stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size); - if (stub_sec->contents == NULL && size != 0) - return FALSE; - stub_sec->size = 0; - } - - /* Build the stubs as directed by the stub hash table. */ - table = htab->stub_hash_table; - bfd_hash_traverse (table, m68hc11_elf_export_one_stub, info); - - /* Scan the output sections to see if we use the memory banks. - If so, export the symbols that define how the memory banks - are mapped. This is used by gdb and the simulator to obtain - the information. It can be used by programs to burn the eprom - at the good addresses. */ - param.use_memory_banks = FALSE; - param.pinfo = &htab->pinfo; - bfd_map_over_sections (abfd, scan_sections_for_abi, ¶m); - if (param.use_memory_banks) - { - m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_START_NAME, - htab->pinfo.bank_physical, - bfd_abs_section_ptr); - m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_VIRTUAL_NAME, - htab->pinfo.bank_virtual, - bfd_abs_section_ptr); - m68hc11_elf_set_symbol (abfd, info, BFD_M68HC11_BANK_SIZE_NAME, - htab->pinfo.bank_size, - bfd_abs_section_ptr); - } - - return TRUE; -} - -void -m68hc11_elf_get_bank_parameters (struct bfd_link_info *info) -{ - unsigned i; - struct m68hc11_page_info *pinfo; - struct bfd_link_hash_entry *h; - - pinfo = &m68hc11_elf_hash_table (info)->pinfo; - if (pinfo->bank_param_initialized) - return; - - pinfo->bank_virtual = M68HC12_BANK_VIRT; - pinfo->bank_mask = M68HC12_BANK_MASK; - pinfo->bank_physical = M68HC12_BANK_BASE; - pinfo->bank_shift = M68HC12_BANK_SHIFT; - pinfo->bank_size = 1 << M68HC12_BANK_SHIFT; - - h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_START_NAME, - FALSE, FALSE, TRUE); - if (h != (struct bfd_link_hash_entry*) NULL - && h->type == bfd_link_hash_defined) - pinfo->bank_physical = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - - h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_VIRTUAL_NAME, - FALSE, FALSE, TRUE); - if (h != (struct bfd_link_hash_entry*) NULL - && h->type == bfd_link_hash_defined) - pinfo->bank_virtual = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - - h = bfd_link_hash_lookup (info->hash, BFD_M68HC11_BANK_SIZE_NAME, - FALSE, FALSE, TRUE); - if (h != (struct bfd_link_hash_entry*) NULL - && h->type == bfd_link_hash_defined) - pinfo->bank_size = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - - pinfo->bank_shift = 0; - for (i = pinfo->bank_size; i != 0; i >>= 1) - pinfo->bank_shift++; - pinfo->bank_shift--; - pinfo->bank_mask = (1 << pinfo->bank_shift) - 1; - pinfo->bank_physical_end = pinfo->bank_physical + pinfo->bank_size; - pinfo->bank_param_initialized = 1; - - h = bfd_link_hash_lookup (info->hash, "__far_trampoline", FALSE, - FALSE, TRUE); - if (h != (struct bfd_link_hash_entry*) NULL - && h->type == bfd_link_hash_defined) - pinfo->trampoline_addr = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); -} - -/* Return 1 if the address is in banked memory. - This can be applied to a virtual address and to a physical address. */ -int -m68hc11_addr_is_banked (struct m68hc11_page_info *pinfo, bfd_vma addr) -{ - if (addr >= pinfo->bank_virtual) - return 1; - - if (addr >= pinfo->bank_physical && addr <= pinfo->bank_physical_end) - return 1; - - return 0; -} - -/* Return the physical address seen by the processor, taking - into account banked memory. */ -bfd_vma -m68hc11_phys_addr (struct m68hc11_page_info *pinfo, bfd_vma addr) -{ - if (addr < pinfo->bank_virtual) - return addr; - - /* Map the address to the memory bank. */ - addr -= pinfo->bank_virtual; - addr &= pinfo->bank_mask; - addr += pinfo->bank_physical; - return addr; -} - -/* Return the page number corresponding to an address in banked memory. */ -bfd_vma -m68hc11_phys_page (struct m68hc11_page_info *pinfo, bfd_vma addr) -{ - if (addr < pinfo->bank_virtual) - return 0; - - /* Map the address to the memory bank. */ - addr -= pinfo->bank_virtual; - addr >>= pinfo->bank_shift; - addr &= 0x0ff; - return addr; -} - -/* This function is used for relocs which are only used for relaxing, - which the linker should otherwise ignore. */ - -bfd_reloc_status_type -m68hc11_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, - arelent *reloc_entry, - asymbol *symbol ATTRIBUTE_UNUSED, - void *data ATTRIBUTE_UNUSED, - asection *input_section, - bfd *output_bfd, - char **error_message ATTRIBUTE_UNUSED) -{ - if (output_bfd != NULL) - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; -} - -bfd_reloc_status_type -m68hc11_elf_special_reloc (bfd *abfd ATTRIBUTE_UNUSED, - arelent *reloc_entry, - asymbol *symbol, - void *data ATTRIBUTE_UNUSED, - asection *input_section, - bfd *output_bfd, - char **error_message ATTRIBUTE_UNUSED) -{ - if (output_bfd != (bfd *) NULL - && (symbol->flags & BSF_SECTION_SYM) == 0 - && (! reloc_entry->howto->partial_inplace - || reloc_entry->addend == 0)) - { - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; - } - - if (output_bfd != NULL) - return bfd_reloc_continue; - - if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) - return bfd_reloc_outofrange; - - abort(); -} - -/* Look through the relocs for a section during the first phase. - Since we don't do .gots or .plts, we just need to consider the - virtual table relocs for gc. */ - -bfd_boolean -elf32_m68hc11_check_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; - const Elf_Internal_Rela * rel; - const Elf_Internal_Rela * rel_end; - - if (info->relocatable) - return TRUE; - - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - 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]; - 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; - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_M68HC11_GNU_VTINHERIT: - if (!bfd_elf_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_M68HC11_GNU_VTENTRY: - BFD_ASSERT (h != NULL); - if (h != NULL - && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return FALSE; - break; - } - } - - return TRUE; -} - -/* Relocate a 68hc11/68hc12 ELF section. */ -bfd_boolean -elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, - 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, *relend; - const char *name = NULL; - struct m68hc11_page_info *pinfo; - const struct elf_backend_data * const ebd = get_elf_backend_data (input_bfd); - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - /* Get memory bank parameters. */ - m68hc11_elf_get_bank_parameters (info); - pinfo = &m68hc11_elf_hash_table (info)->pinfo; - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - int r_type; - arelent arel; - reloc_howto_type *howto; - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - bfd_vma relocation = 0; - bfd_reloc_status_type r = bfd_reloc_undefined; - bfd_vma phys_page; - bfd_vma phys_addr; - bfd_vma insn_addr; - bfd_vma insn_page; - bfd_boolean is_far = FALSE; - struct elf_link_hash_entry *h; - const char* stub_name = 0; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - - if (r_type == R_M68HC11_GNU_VTENTRY - || r_type == R_M68HC11_GNU_VTINHERIT ) - continue; - - (*ebd->elf_info_to_howto_rel) (input_bfd, &arel, rel); - howto = arel.howto; - - 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); - is_far = (sym && (sym->st_other & STO_M68HC12_FAR)); - if (is_far) - stub_name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, - sym->st_name)); - } - else - { - bfd_boolean unresolved_reloc, warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, unresolved_reloc, - warned); - - is_far = (h && (h->other & STO_M68HC12_FAR)); - stub_name = h->root.root.string; - } - - if (sec != NULL && elf_discarded_section (sec)) - { - /* For relocs against symbols from removed linkonce sections, - or sections discarded by a linker script, we just want the - section contents zeroed. Avoid any special processing. */ - _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); - rel->r_info = 0; - rel->r_addend = 0; - continue; - } - - if (info->relocatable) - { - /* This is a relocatable 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 (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) - rel->r_addend += sec->output_offset; - continue; - } - - 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); - } - - if (is_far && ELF32_R_TYPE (rel->r_info) == R_M68HC11_16) - { - struct elf32_m68hc11_stub_hash_entry* stub; - struct m68hc11_elf_link_hash_table *htab; - - htab = m68hc11_elf_hash_table (info); - stub = m68hc12_stub_hash_lookup (htab->stub_hash_table, - name, FALSE, FALSE); - if (stub) - { - relocation = stub->stub_offset - + stub->stub_sec->output_section->vma - + stub->stub_sec->output_offset; - is_far = FALSE; - } - } - - /* Do the memory bank mapping. */ - phys_addr = m68hc11_phys_addr (pinfo, relocation + rel->r_addend); - phys_page = m68hc11_phys_page (pinfo, relocation + rel->r_addend); - switch (r_type) - { - case R_M68HC11_24: - /* Reloc used by 68HC12 call instruction. */ - bfd_put_16 (input_bfd, phys_addr, - (bfd_byte*) contents + rel->r_offset); - bfd_put_8 (input_bfd, phys_page, - (bfd_byte*) contents + rel->r_offset + 2); - r = bfd_reloc_ok; - r_type = R_M68HC11_NONE; - break; - - case R_M68HC11_NONE: - r = bfd_reloc_ok; - break; - - case R_M68HC11_LO16: - /* Reloc generated by %addr(expr) gas to obtain the - address as mapped in the memory bank window. */ - relocation = phys_addr; - break; - - case R_M68HC11_PAGE: - /* Reloc generated by %page(expr) gas to obtain the - page number associated with the address. */ - relocation = phys_page; - break; - - case R_M68HC11_16: - /* Get virtual address of instruction having the relocation. */ - if (is_far) - { - const char* msg; - char* buf; - msg = _("Reference to the far symbol `%s' using a wrong " - "relocation may result in incorrect execution"); - buf = alloca (strlen (msg) + strlen (name) + 10); - sprintf (buf, msg, name); - - (* info->callbacks->warning) - (info, buf, name, input_bfd, NULL, rel->r_offset); - } - - /* Get virtual address of instruction having the relocation. */ - insn_addr = input_section->output_section->vma - + input_section->output_offset - + rel->r_offset; - - insn_page = m68hc11_phys_page (pinfo, insn_addr); - - if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend) - && m68hc11_addr_is_banked (pinfo, insn_addr) - && phys_page != insn_page) - { - const char* msg; - char* buf; - - msg = _("banked address [%lx:%04lx] (%lx) is not in the same bank " - "as current banked address [%lx:%04lx] (%lx)"); - - buf = alloca (strlen (msg) + 128); - sprintf (buf, msg, phys_page, phys_addr, - (long) (relocation + rel->r_addend), - insn_page, m68hc11_phys_addr (pinfo, insn_addr), - (long) (insn_addr)); - if (!((*info->callbacks->warning) - (info, buf, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - } - if (phys_page != 0 && insn_page == 0) - { - const char* msg; - char* buf; - - msg = _("reference to a banked address [%lx:%04lx] in the " - "normal address space at %04lx"); - - buf = alloca (strlen (msg) + 128); - sprintf (buf, msg, phys_page, phys_addr, insn_addr); - if (!((*info->callbacks->warning) - (info, buf, name, input_bfd, input_section, - insn_addr))) - return FALSE; - - relocation = phys_addr; - break; - } - - /* If this is a banked address use the phys_addr so that - we stay in the banked window. */ - if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend)) - relocation = phys_addr; - break; - } - if (r_type != R_M68HC11_NONE) - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - - if (r != bfd_reloc_ok) - { - const char * msg = (const char *) 0; - - switch (r) - { - case bfd_reloc_overflow: - if (!((*info->callbacks->reloc_overflow) - (info, NULL, 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, TRUE))) - 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; -} - - - -/* Set and control ELF flags in ELF header. */ - -bfd_boolean -_bfd_m68hc11_elf_set_private_flags (bfd *abfd, flagword flags) -{ - BFD_ASSERT (!elf_flags_init (abfd) - || elf_elfheader (abfd)->e_flags == flags); - - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = TRUE; - return TRUE; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ - -bfd_boolean -_bfd_m68hc11_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - flagword old_flags; - flagword new_flags; - bfd_boolean ok = TRUE; - - /* Check if we have the same endianess */ - if (!_bfd_generic_verify_endian_match (ibfd, obfd)) - return FALSE; - - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - new_flags = elf_elfheader (ibfd)->e_flags; - elf_elfheader (obfd)->e_flags |= new_flags & EF_M68HC11_ABI; - old_flags = elf_elfheader (obfd)->e_flags; - - if (! elf_flags_init (obfd)) - { - elf_flags_init (obfd) = TRUE; - elf_elfheader (obfd)->e_flags = new_flags; - elf_elfheader (obfd)->e_ident[EI_CLASS] - = elf_elfheader (ibfd)->e_ident[EI_CLASS]; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_arch_info (obfd)->the_default) - { - if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), - bfd_get_mach (ibfd))) - return FALSE; - } - - return TRUE; - } - - /* Check ABI compatibility. */ - if ((new_flags & E_M68HC11_I32) != (old_flags & E_M68HC11_I32)) - { - (*_bfd_error_handler) - (_("%B: linking files compiled for 16-bit integers (-mshort) " - "and others for 32-bit integers"), ibfd); - ok = FALSE; - } - if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64)) - { - (*_bfd_error_handler) - (_("%B: linking files compiled for 32-bit double (-fshort-double) " - "and others for 64-bit double"), ibfd); - ok = FALSE; - } - - /* Processor compatibility. */ - if (!EF_M68HC11_CAN_MERGE_MACH (new_flags, old_flags)) - { - (*_bfd_error_handler) - (_("%B: linking files compiled for HCS12 with " - "others compiled for HC12"), ibfd); - ok = FALSE; - } - new_flags = ((new_flags & ~EF_M68HC11_MACH_MASK) - | (EF_M68HC11_MERGE_MACH (new_flags, old_flags))); - - elf_elfheader (obfd)->e_flags = new_flags; - - new_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK); - old_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK); - - /* Warn about any other mismatches */ - if (new_flags != old_flags) - { - (*_bfd_error_handler) - (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), - ibfd, (unsigned long) new_flags, (unsigned long) old_flags); - ok = FALSE; - } - - if (! ok) - { - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - - return TRUE; -} - -bfd_boolean -_bfd_m68hc11_elf_print_private_bfd_data (bfd *abfd, void *ptr) -{ - FILE *file = (FILE *) ptr; - - BFD_ASSERT (abfd != NULL && ptr != NULL); - - /* Print normal ELF private data. */ - _bfd_elf_print_private_bfd_data (abfd, ptr); - - /* xgettext:c-format */ - fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); - - if (elf_elfheader (abfd)->e_flags & E_M68HC11_I32) - fprintf (file, _("[abi=32-bit int, ")); - else - fprintf (file, _("[abi=16-bit int, ")); - - if (elf_elfheader (abfd)->e_flags & E_M68HC11_F64) - fprintf (file, _("64-bit double, ")); - else - fprintf (file, _("32-bit double, ")); - - if (strcmp (bfd_get_target (abfd), "elf32-m68hc11") == 0) - fprintf (file, _("cpu=HC11]")); - else if (elf_elfheader (abfd)->e_flags & EF_M68HCS12_MACH) - fprintf (file, _("cpu=HCS12]")); - else - fprintf (file, _("cpu=HC12]")); - - if (elf_elfheader (abfd)->e_flags & E_M68HC12_BANKS) - fprintf (file, _(" [memory=bank-model]")); - else - fprintf (file, _(" [memory=flat]")); - - fputc ('\n', file); - - return TRUE; -} - -static void scan_sections_for_abi (bfd *abfd ATTRIBUTE_UNUSED, - asection *asect, void *arg) -{ - struct m68hc11_scan_param* p = (struct m68hc11_scan_param*) arg; - - if (asect->vma >= p->pinfo->bank_virtual) - p->use_memory_banks = TRUE; -} - -/* Tweak the OSABI field of the elf header. */ - -void -elf32_m68hc11_post_process_headers (bfd *abfd, struct bfd_link_info *link_info) -{ - struct m68hc11_scan_param param; - - if (link_info == 0) - return; - - m68hc11_elf_get_bank_parameters (link_info); - - param.use_memory_banks = FALSE; - param.pinfo = &m68hc11_elf_hash_table (link_info)->pinfo; - bfd_map_over_sections (abfd, scan_sections_for_abi, ¶m); - if (param.use_memory_banks) - { - Elf_Internal_Ehdr * i_ehdrp; - - i_ehdrp = elf_elfheader (abfd); - i_ehdrp->e_flags |= E_M68HC12_BANKS; - } -} - |