(m68hc11_elf_hash_table_create): New function.
(elf32_m68hc11_link_hash_table_free): New function.
(stub_hash_newfunc): New function.
(m68hc11_add_stub): New function.
(elf32_m68hc11_add_symbol_hook): New function.
(elf32_m68hc11_setup_section_lists): New function.
(elf32_m68hc11_next_input_section): New function.
(elf32_m68hc11_size_stubs): New function.
(elf32_m68hc11_build_stubs): New function.
(m68hc11_get_relocation_value): New function.
(elf32_m68hc11_relocate_section): Call the above to redirect
some relocations to the trampoline code.
(m68hc11_elf_export_one_stub): New function.
(m68hc11_elf_set_symbol): New function.
(elf32_m68hc11_build_stubs): Call it via bfd_hash_traverse.
(m68hc11_elf_get_bank_parameters): Get parameters only when the info
is not yet initialized.
* elf32-m68hc1x.h: New file (from elf32-m68hc11.c and elf32-m68hc12.c)
(elf32_m68hc11_stub_hash_entry): New struct.
(m68hc11_page_info): Add trampoline handler address.
(m68hc11_elf_link_hash_table): Add stubs generation members.
(elf32_m68hc11_add_symbol_hook): Declare.
(elf32_m68hc11_setup_section_lists): Declare.
(elf32_m68hc11_size_stubs): Declare.
(elf32_m68hc11_build_stubs): Declare.
* elf32-m68hc11.c (m68hc11_elf_ignore_reloc): Move to elf32-m68hc1x.c.
(elf32_m68hc11_gc_mark_hook, elf32_m68hc11_gc_sweep_hook): Likewise.
(elf32_m68hc11_check_relocs, elf32_m68hc11_relocate_section): Ditto.
(_bfd_m68hc11_elf_set_private_flags): Ditto.
(_bfd_m68hc11_elf_merge_private_bfd_data): Ditto.
(_bfd_m68hc11_elf_print_private_bfd_data): Ditto.
(bfd_elf32_bfd_link_hash_table_create): Define.
(elf_backend_add_symbol_hook): Define.
(m68hc11_elf_bfd_link_hash_table_create): New function.
(m68hc11_elf_build_one_stub): New function.
(m68hc11_elf_size_one_stub): New function.
(m68hc11_elf_bfd_link_hash_table_create): Install the above.
(bfd_elf32_bfd_link_hash_table_create): Define.
* elf32-m68hc12.c (m68hc11_elf_ignore_reloc): Remove.
(m68hc12_addr_is_banked): Remove, use m68hc11_addr_is_banked.
(m68hc12_phys_addr): Ditto.
(m68hc12_phys_page): Ditto.
(m68hc12_elf_special_reloc): Move to elf32-m68hc1x.c.
(elf32_m68hc11_gc_mark_hook): Likewise.
(elf32_m68hc11_gc_sweep_hook): Likewise.
(elf32_m68hc11_check_relocs): Likewise.
(elf32_m68hc11_relocate_section): Likewise.
(_bfd_m68hc12_elf_set_private_flags): Likewise.
(_bfd_m68hc12_elf_merge_private_bfd_data): Likewise.
(_bfd_m68hc12_elf_print_private_bfd_data): Likewise.
(m68hc12_elf_build_one_stub): New function.
(m68hc12_elf_size_one_stub): New function.
(m68hc12_elf_bfd_link_hash_table_create): New function, use the above.
(elf_backend_add_symbol_hook): Define.
(elf_m68hc11_howto_table): Use TRUE for pcrel relocs; fix masks.
+2003-04-21 Stephane Carrez <stcarrez@nerim.fr>
+
+ * elf32-m68hc1x.c: New file (from elf32-m68hc11.c and elf32-m68hc12.c)
+ (m68hc11_elf_hash_table_create): New function.
+ (elf32_m68hc11_link_hash_table_free): New function.
+ (stub_hash_newfunc): New function.
+ (m68hc11_add_stub): New function.
+ (elf32_m68hc11_add_symbol_hook): New function.
+ (elf32_m68hc11_setup_section_lists): New function.
+ (elf32_m68hc11_next_input_section): New function.
+ (elf32_m68hc11_size_stubs): New function.
+ (elf32_m68hc11_build_stubs): New function.
+ (m68hc11_get_relocation_value): New function.
+ (elf32_m68hc11_relocate_section): Call the above to redirect
+ some relocations to the trampoline code.
+ (m68hc11_elf_export_one_stub): New function.
+ (m68hc11_elf_set_symbol): New function.
+ (elf32_m68hc11_build_stubs): Call it via bfd_hash_traverse.
+ (m68hc11_elf_get_bank_parameters): Get parameters only when the info
+ is not yet initialized.
+
+ * elf32-m68hc1x.h: New file (from elf32-m68hc11.c and elf32-m68hc12.c)
+ (elf32_m68hc11_stub_hash_entry): New struct.
+ (m68hc11_page_info): Add trampoline handler address.
+ (m68hc11_elf_link_hash_table): Add stubs generation members.
+ (elf32_m68hc11_add_symbol_hook): Declare.
+ (elf32_m68hc11_setup_section_lists): Declare.
+ (elf32_m68hc11_size_stubs): Declare.
+ (elf32_m68hc11_build_stubs): Declare.
+
+ * elf32-m68hc11.c (m68hc11_elf_ignore_reloc): Move to elf32-m68hc1x.c.
+ (elf32_m68hc11_gc_mark_hook, elf32_m68hc11_gc_sweep_hook): Likewise.
+ (elf32_m68hc11_check_relocs, elf32_m68hc11_relocate_section): Ditto.
+ (_bfd_m68hc11_elf_set_private_flags): Ditto.
+ (_bfd_m68hc11_elf_merge_private_bfd_data): Ditto.
+ (_bfd_m68hc11_elf_print_private_bfd_data): Ditto.
+ (bfd_elf32_bfd_link_hash_table_create): Define.
+ (elf_backend_add_symbol_hook): Define.
+ (m68hc11_elf_bfd_link_hash_table_create): New function.
+ (m68hc11_elf_build_one_stub): New function.
+ (m68hc11_elf_size_one_stub): New function.
+ (m68hc11_elf_bfd_link_hash_table_create): Install the above.
+ (bfd_elf32_bfd_link_hash_table_create): Define.
+
+ * elf32-m68hc12.c (m68hc11_elf_ignore_reloc): Remove.
+ (m68hc12_addr_is_banked): Remove, use m68hc11_addr_is_banked.
+ (m68hc12_phys_addr): Ditto.
+ (m68hc12_phys_page): Ditto.
+ (m68hc12_elf_special_reloc): Move to elf32-m68hc1x.c.
+ (elf32_m68hc11_gc_mark_hook): Likewise.
+ (elf32_m68hc11_gc_sweep_hook): Likewise.
+ (elf32_m68hc11_check_relocs): Likewise.
+ (elf32_m68hc11_relocate_section): Likewise.
+ (_bfd_m68hc12_elf_set_private_flags): Likewise.
+ (_bfd_m68hc12_elf_merge_private_bfd_data): Likewise.
+ (_bfd_m68hc12_elf_print_private_bfd_data): Likewise.
+ (m68hc12_elf_build_one_stub): New function.
+ (m68hc12_elf_size_one_stub): New function.
+ (m68hc12_elf_bfd_link_hash_table_create): New function, use the above.
+ (elf_backend_add_symbol_hook): Define.
+ (elf_m68hc11_howto_table): Use TRUE for pcrel relocs; fix masks.
+
2003-04-18 Nick Clifton <nickc@redhat.com>
* format.c (bfd_check_format_matches): Only check associated
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "elf32-m68hc1x.h"
#include "elf/m68hc11.h"
+#include "opcode/m68hc11.h"
+/* Relocation functions. */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void m68hc11_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-static bfd_reloc_status_type m68hc11_elf_ignore_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-
-/* GC mark and sweep. */
-static asection *elf32_m68hc11_gc_mark_hook
- PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *));
-static bfd_boolean elf32_m68hc11_gc_sweep_hook
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static bfd_boolean elf32_m68hc11_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static bfd_boolean elf32_m68hc11_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+/* Trampoline generation. */
+static bfd_boolean m68hc11_elf_size_one_stub
+ PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+static bfd_boolean m68hc11_elf_build_one_stub
+ PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+static struct bfd_link_hash_table* m68hc11_elf_bfd_link_hash_table_create
+ PARAMS ((bfd* abfd));
+
+/* Linker relaxation. */
static bfd_boolean m68hc11_elf_relax_section
PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
static void m68hc11_elf_relax_delete_bytes
unsigned long, unsigned long));
static int compare_reloc PARAMS ((const void *, const void *));
-
-bfd_boolean _bfd_m68hc11_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
-bfd_boolean _bfd_m68hc11_elf_set_private_flags PARAMS ((bfd *, flagword));
-bfd_boolean _bfd_m68hc11_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
-
/* Use REL instead of RELA to save space */
#define USE_REL 1
-/* The Motorola 68HC11 microcontroler only addresses 64Kb.
+/* The Motorola 68HC11 microcontroller only addresses 64Kb but we also
+ support a memory bank switching mechanism similar to 68HC12.
We must handle 8 and 16-bit relocations. The 32-bit relocation
- is defined but not used except by gas when -gstabs is used (which
- is wrong).
+ are used for debugging sections (DWARF2) to represent a virtual
+ address.
The 3-bit and 16-bit PC rel relocation is only used by 68HC12. */
static reloc_howto_type elf_m68hc11_howto_table[] = {
/* This reloc does nothing. */
return NULL;
}
-/* This function is used for relocs which are only used for relaxing,
- which the linker should otherwise ignore. */
-
-static bfd_reloc_status_type
-m68hc11_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry;
- asymbol *symbol ATTRIBUTE_UNUSED;
- PTR 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;
-}
-
/* Set the howto pointer for an M68HC11 ELF reloc. */
static void
cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
}
-static asection *
-elf32_m68hc11_gc_mark_hook (sec, info, rel, h, sym)
- asection *sec;
- 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))
- {
- 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;
+\f
+/* Far trampoline generation. */
- default:
- break;
- }
- }
- }
- else
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+/* Build a 68HC11 trampoline stub. */
+static bfd_boolean
+m68hc11_elf_build_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR in_arg;
+{
+ struct elf32_m68hc11_stub_hash_entry *stub_entry;
+ struct bfd_link_info *info;
+ struct m68hc11_elf_link_hash_table *htab;
+ asection *stub_sec;
+ bfd *stub_bfd;
+ bfd_byte *loc;
+ bfd_vma sym_value, phys_page, phys_addr;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
+ info = (struct bfd_link_info *) in_arg;
+
+ htab = m68hc11_elf_hash_table (info);
+
+ stub_sec = stub_entry->stub_sec;
+
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = stub_sec->_raw_size;
+ stub_sec->_raw_size += 10;
+ loc = stub_sec->contents + stub_entry->stub_offset;
+
+ stub_bfd = stub_sec->owner;
+
+ /* Create the trampoline call stub:
+
+ pshb
+ ldab #%page(symbol)
+ ldy #%addr(symbol)
+ jmp __trampoline
+
+ */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+ phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
+ phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
+
+ /* pshb; ldab #%page(sym) */
+ bfd_put_8 (stub_bfd, 0x37, loc);
+ bfd_put_8 (stub_bfd, 0xC6, loc + 1);
+ bfd_put_8 (stub_bfd, phys_page, loc + 2);
+ loc += 3;
+
+ /* ldy #%addr(sym) */
+ bfd_put_8 (stub_bfd, 0x18, loc);
+ bfd_put_8 (stub_bfd, 0xCE, loc + 1);
+ bfd_put_16 (stub_bfd, phys_addr, loc + 2);
+ loc += 4;
+
+ /* jmp __trampoline */
+ bfd_put_8 (stub_bfd, 0x7E, loc);
+ bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
- return NULL;
+ return TRUE;
}
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes. */
+
static bfd_boolean
-elf32_m68hc11_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;
+m68hc11_elf_size_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR in_arg ATTRIBUTE_UNUSED;
{
- /* We don't use got and plt entries for 68hc11/68hc12. */
+ struct elf32_m68hc11_stub_hash_entry *stub_entry;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
+
+ stub_entry->stub_sec->_raw_size += 10;
return TRUE;
}
+/* Create a 68HC11 ELF linker hash table. */
+
+static struct bfd_link_hash_table *
+m68hc11_elf_bfd_link_hash_table_create (abfd)
+ bfd *abfd;
+{
+ struct m68hc11_elf_link_hash_table *ret;
+
+ ret = m68hc11_elf_hash_table_create (abfd);
+ if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
+ return NULL;
+
+ ret->size_one_stub = m68hc11_elf_size_one_stub;
+ ret->build_one_stub = m68hc11_elf_build_one_stub;
+
+ return &ret->root.root;
+}
+
\f
/* 68HC11 Linker Relaxation. */
}
}
-/* 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. */
-
-static bfd_boolean
-elf32_m68hc11_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;
-
- if (info->relocateable)
- return TRUE;
-
- 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];
-
- 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_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_M68HC11_GNU_VTENTRY:
- if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return FALSE;
- break;
- }
- }
-
- return TRUE;
-}
-
-/* Relocate a 68hc11/68hc12 ELF section. */
-static bfd_boolean
-elf32_m68hc11_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- 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;
-
- 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;
-
- 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;
-
- howto = elf_m68hc11_howto_table + r_type;
-
- 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];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
- 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)
- {
- sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else
- {
- if (!((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset, TRUE)))
- 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 = _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, 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;
-}
-
-
\f
-/* Set and control ELF flags in ELF header. */
-
-bfd_boolean
-_bfd_m68hc11_elf_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
-{
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
-
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = TRUE;
- return TRUE;
-}
-
-/* Merge backend specific data from an object file to the output
- object file when linking. */
-
-bfd_boolean
-_bfd_m68hc11_elf_merge_private_bfd_data (ibfd, obfd)
- 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)
- (_("%s: linking files compiled for 16-bit integers (-mshort) "
- "and others for 32-bit integers"),
- bfd_archive_filename (ibfd));
- ok = FALSE;
- }
- if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64))
- {
- (*_bfd_error_handler)
- (_("%s: linking files compiled for 32-bit double (-fshort-double) "
- "and others for 64-bit double"),
- bfd_archive_filename (ibfd));
- ok = FALSE;
- }
- new_flags &= ~EF_M68HC11_ABI;
- old_flags &= ~EF_M68HC11_ABI;
-
- /* Warn about any other mismatches */
- if (new_flags != old_flags)
- {
- (*_bfd_error_handler)
- (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
- bfd_archive_filename (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 (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);
-
- /* 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 (elf_elfheader (abfd)->e_flags & E_M68HC12_BANKS)
- fprintf (file, _(" [memory=bank-model]"));
- else
- fprintf (file, _(" [memory=flat]"));
-
- fputc ('\n', file);
-
- return TRUE;
-}
-
-/* Below is the only difference between elf32-m68hc12.c and elf32-m68hc11.c.
- The Motorola spec says to use a different Elf machine code. */
#define ELF_ARCH bfd_arch_m68hc11
#define ELF_MACHINE_CODE EM_68HC11
#define ELF_MAXPAGESIZE 0x1000
#define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
#define elf_backend_check_relocs elf32_m68hc11_check_relocs
#define elf_backend_relocate_section elf32_m68hc11_relocate_section
+#define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
#define elf_backend_object_p 0
#define elf_backend_final_write_processing 0
#define elf_backend_can_gc_sections 1
+
+#define bfd_elf32_bfd_link_hash_table_create \
+ m68hc11_elf_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_free \
+ m68hc11_elf_bfd_link_hash_table_free
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_m68hc11_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
/* Motorola 68HC12-specific support for 32-bit ELF
- Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
+ Copyright 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
Contributed by Stephane Carrez (stcarrez@nerim.fr)
(Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
#include "bfd.h"
#include "sysdep.h"
+#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "elf32-m68hc1x.h"
#include "elf/m68hc11.h"
#include "opcode/m68hc11.h"
+/* Relocation functions. */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void m68hc11_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-static bfd_reloc_status_type m68hc11_elf_ignore_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type m68hc12_elf_special_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static int m68hc12_addr_is_banked PARAMS ((bfd_vma));
-static bfd_vma m68hc12_phys_addr PARAMS ((bfd_vma));
-static bfd_vma m68hc12_phys_page PARAMS ((bfd_vma));
-
-/* GC mark and sweep. */
-static asection *elf32_m68hc11_gc_mark_hook
- PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *));
-static bfd_boolean elf32_m68hc11_gc_sweep_hook
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
+/* Trampoline generation. */
+static bfd_boolean m68hc12_elf_size_one_stub
+ PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+static bfd_boolean m68hc12_elf_build_one_stub
+ PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+static struct bfd_link_hash_table* m68hc12_elf_bfd_link_hash_table_create
+ PARAMS((bfd*));
static bfd_boolean m68hc12_elf_set_mach_from_flags PARAMS ((bfd *));
-bfd_boolean _bfd_m68hc12_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
-bfd_boolean _bfd_m68hc12_elf_set_private_flags PARAMS ((bfd *, flagword));
-bfd_boolean _bfd_m68hc12_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
-
-
-
/* Use REL instead of RELA to save space */
#define USE_REL 1
-/* The Motorola 68HC11 microcontroler only addresses 64Kb.
- We must handle 8 and 16-bit relocations. The 32-bit relocation
- is defined but not used except by gas when -gstabs is used (which
- is wrong).
-
- The 68HC12 microcontroler has a memory bank switching system
+/* The 68HC12 microcontroler has a memory bank switching system
with a 16Kb window in the 64Kb address space. The extended memory
is mapped in the 16Kb window (at 0x8000). The page register controls
which 16Kb bank is mapped. The call/rtc instructions take care of
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* A 16 bit absolute relocation */
HOWTO (R_M68HC11_16, /* type */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont /*bitfield */ , /* complain_on_overflow */
- m68hc12_elf_special_reloc, /* special_function */
+ bfd_elf_generic_reloc, /* special_function */
"R_M68HC12_16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */
/* A 24 bit relocation */
HOWTO (R_M68HC11_24, /* type */
0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- m68hc12_elf_special_reloc, /* special_function */
+ m68hc11_elf_special_reloc, /* special_function */
"R_M68HC12_24", /* name */
FALSE, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
+ 0xffffff, /* src_mask */
+ 0xffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16-bit low relocation */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- m68hc12_elf_special_reloc,/* special_function */
+ m68hc11_elf_special_reloc,/* special_function */
"R_M68HC12_LO16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- m68hc12_elf_special_reloc,/* special_function */
+ m68hc11_elf_special_reloc,/* special_function */
"R_M68HC12_PAGE", /* name */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
return NULL;
}
-/* This function is used for relocs which are only used for relaxing,
- which the linker should otherwise ignore. */
+/* Set the howto pointer for an M68HC11 ELF reloc. */
-static bfd_reloc_status_type
-m68hc11_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
+static void
+m68hc11_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry;
- asymbol *symbol ATTRIBUTE_UNUSED;
- PTR data ATTRIBUTE_UNUSED;
- asection *input_section;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
+ arelent *cache_ptr;
+ Elf_Internal_Rela *dst;
{
- if (output_bfd != NULL)
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
-}
+ unsigned int r_type;
-static int
-m68hc12_addr_is_banked (addr)
- bfd_vma addr;
-{
- return (addr >= M68HC12_BANK_VIRT) ? 1 : 0;
+ r_type = ELF32_R_TYPE (dst->r_info);
+ BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
+ cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
}
-/* Return the physical address seen by the processor, taking
- into account banked memory. */
-static bfd_vma
-m68hc12_phys_addr (addr)
- bfd_vma addr;
-{
- if (addr < M68HC12_BANK_VIRT)
- return addr;
-
- /* Map the address to the memory bank. */
- addr -= M68HC12_BANK_VIRT;
- addr &= M68HC12_BANK_MASK;
- addr += M68HC12_BANK_BASE;
- return addr;
-}
+\f
+/* Far trampoline generation. */
-/* Return the page number corresponding to an address in banked memory. */
-static bfd_vma
-m68hc12_phys_page (addr)
- bfd_vma addr;
+/* Build a 68HC12 trampoline stub. */
+static bfd_boolean
+m68hc12_elf_build_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR in_arg;
{
- if (addr < M68HC12_BANK_VIRT)
- return 0;
-
- /* Map the address to the memory bank. */
- addr -= M68HC12_BANK_VIRT;
- addr >>= M68HC12_BANK_SHIFT;
- addr &= M68HC12_BANK_PAGE_MASK;
- return addr;
-}
+ struct elf32_m68hc11_stub_hash_entry *stub_entry;
+ struct bfd_link_info *info;
+ struct m68hc11_elf_link_hash_table *htab;
+ asection *stub_sec;
+ bfd *stub_bfd;
+ bfd_byte *loc;
+ bfd_vma sym_value, phys_page, phys_addr;
-static bfd_reloc_status_type
-m68hc12_elf_special_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- reloc_howto_type *howto;
- bfd_vma relocation;
- bfd_vma phys_addr;
- bfd_vma phys_page;
- bfd_vma insn_page;
- bfd_vma insn_addr;
-
- 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;
- }
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
+ info = (struct bfd_link_info *) in_arg;
- if (output_bfd != NULL)
- return bfd_reloc_continue;
+ htab = m68hc11_elf_hash_table (info);
- if (reloc_entry->address > input_section->_cooked_size)
- return bfd_reloc_outofrange;
+ stub_sec = stub_entry->stub_sec;
- /* Compute relocation. */
- relocation = (symbol->value
- + symbol->section->output_section->vma
- + symbol->section->output_offset);
- relocation += reloc_entry->addend;
- relocation += bfd_get_16 (abfd, (bfd_byte*) data + reloc_entry->address);
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = stub_sec->_raw_size;
+ stub_sec->_raw_size += 7;
+ loc = stub_sec->contents + stub_entry->stub_offset;
- /* Do the memory bank mapping. */
- phys_addr = m68hc12_phys_addr (relocation);
- phys_page = m68hc12_phys_page (relocation);
+ stub_bfd = stub_sec->owner;
- howto = reloc_entry->howto;
- if (howto->complain_on_overflow != complain_overflow_dont
- && (phys_addr & (((bfd_vma) -1) << 16)))
- return bfd_reloc_overflow;
+ /* Create the trampoline call stub:
- switch (howto->type)
- {
- case R_M68HC11_16:
- /* Get virtual address of instruction having the relocation. */
- insn_addr = input_section->output_section->vma
- + input_section->output_offset
- + reloc_entry->address;
-
- insn_page = m68hc12_phys_page (insn_addr);
-
- if (m68hc12_addr_is_banked (relocation)
- && m68hc12_addr_is_banked (insn_addr)
- && phys_page != insn_page)
- {
- *error_message = _("address is not in the same bank");
- return bfd_reloc_dangerous;
- }
- if (m68hc12_addr_is_banked (relocation)
- && !m68hc12_addr_is_banked (insn_addr))
- {
- *error_message = _("reference to a banked address in "
- "the normal address space");
- return bfd_reloc_dangerous;
- }
-
- case R_M68HC11_LO16:
- bfd_put_16 (abfd, phys_addr, (bfd_byte*) data + reloc_entry->address);
- break;
+ ldy #%addr(symbol)
+ call %page(symbol), __trampoline
- case R_M68HC11_24:
- bfd_put_16 (abfd, phys_addr, (bfd_byte*) data + reloc_entry->address);
- bfd_put_8 (abfd, phys_page, (bfd_byte*) data + reloc_entry->address + 2);
- break;
+ */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+ phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
+ phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
- case R_M68HC11_PAGE:
- bfd_put_8 (abfd, phys_page, (bfd_byte*) data + reloc_entry->address);
- break;
+ /* ldy #%page(sym) */
+ bfd_put_8 (stub_bfd, 0xCD, loc);
+ bfd_put_16 (stub_bfd, phys_addr, loc + 1);
+ loc += 3;
- default:
- abort ();
- break;
- }
+ /* call %page(sym), __trampoline */
+ bfd_put_8 (stub_bfd, 0x4a, loc);
+ bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
+ bfd_put_8 (stub_bfd, phys_page, loc + 3);
- return bfd_reloc_ok;
+ return TRUE;
}
-/* Set the howto pointer for an M68HC11 ELF reloc. */
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes. */
-static void
-m68hc11_info_to_howto_rel (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf_Internal_Rela *dst;
+static bfd_boolean
+m68hc12_elf_size_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR in_arg ATTRIBUTE_UNUSED;
{
- unsigned int r_type;
+ struct elf32_m68hc11_stub_hash_entry *stub_entry;
- r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
- cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
+
+ stub_entry->stub_sec->_raw_size += 7;
+ return TRUE;
}
-static asection *
-elf32_m68hc11_gc_mark_hook (sec, info, rel, h, sym)
- asection *sec;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- Elf_Internal_Rela *rel;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
+/* Create a 68HC12 ELF linker hash table. */
+
+static struct bfd_link_hash_table *
+m68hc12_elf_bfd_link_hash_table_create (abfd)
+ bfd *abfd;
{
- if (h != NULL)
- {
- switch (ELF32_R_TYPE (rel->r_info))
- {
- 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
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+ struct m68hc11_elf_link_hash_table *ret;
- return NULL;
-}
+ ret = m68hc11_elf_hash_table_create (abfd);
+ if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
+ return NULL;
-static bfd_boolean
-elf32_m68hc11_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 use got and plt entries for 68hc11/68hc12. */
- return TRUE;
-}
+ ret->size_one_stub = m68hc12_elf_size_one_stub;
+ ret->build_one_stub = m68hc12_elf_build_one_stub;
+ return &ret->root.root;
+}
\f
static bfd_boolean
m68hc12_elf_set_mach_from_flags (abfd)
return TRUE;
}
-/* Set and control ELF flags in ELF header. */
-
-bfd_boolean
-_bfd_m68hc12_elf_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
-{
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
-
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = TRUE;
- return m68hc12_elf_set_mach_from_flags (abfd);
-}
-
-/* Merge backend specific data from an object file to the output
- object file when linking. */
-
-bfd_boolean
-_bfd_m68hc12_elf_merge_private_bfd_data (ibfd, obfd)
- 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;
- 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)
- (_("%s: linking files compiled for 16-bit integers (-mshort) "
- "and others for 32-bit integers"),
- bfd_archive_filename (ibfd));
- ok = FALSE;
- }
- if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64))
- {
- (*_bfd_error_handler)
- (_("%s: linking files compiled for 32-bit double (-fshort-double) "
- "and others for 64-bit double"),
- bfd_archive_filename (ibfd));
- ok = FALSE;
- }
-
- /* Processor compatibility. */
- if (!EF_M68HC11_CAN_MERGE_MACH (new_flags, old_flags))
- {
- (*_bfd_error_handler)
- (_("%s: linking files compiled for HCS12 with "
- "others compiled for HC12"),
- bfd_archive_filename (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;
-
- /* Warn about any other mismatches */
- new_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK);
- old_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK);
- if (new_flags != old_flags)
- {
- (*_bfd_error_handler)
- (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
- bfd_archive_filename (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_m68hc12_elf_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);
-
- /* 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 (elf_elfheader (abfd)->e_flags & EF_M68HCS12_MACH)
- fprintf (file, _(" cpu=HCS12]"));
- else
- fprintf (file, _(" cpu=HC12]"));
- fputc ('\n', file);
-
- return TRUE;
-}
-
#define ELF_ARCH bfd_arch_m68hc12
#define ELF_MACHINE_CODE EM_68HC12
#define ELF_MAXPAGESIZE 0x1000
#define elf_info_to_howto_rel m68hc11_info_to_howto_rel
#define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook
#define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
+#define elf_backend_check_relocs elf32_m68hc11_check_relocs
+#define elf_backend_relocate_section elf32_m68hc11_relocate_section
#define elf_backend_object_p m68hc12_elf_set_mach_from_flags
#define elf_backend_final_write_processing 0
-/* Disabled as this backend uses the generic linker. */
-#define elf_backend_can_gc_sections 0
-
+#define elf_backend_can_gc_sections 1
+#define elf_backend_post_process_headers elf32_m68hc11_post_process_headers
+#define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
+
+#define bfd_elf32_bfd_link_hash_table_create \
+ m68hc12_elf_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_free \
+ m68hc11_elf_bfd_link_hash_table_free
#define bfd_elf32_bfd_merge_private_bfd_data \
- _bfd_m68hc12_elf_merge_private_bfd_data
-#define bfd_elf32_bfd_set_private_flags _bfd_m68hc12_elf_set_private_flags
+ _bfd_m68hc11_elf_merge_private_bfd_data
+#define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
- _bfd_m68hc12_elf_print_private_bfd_data
+ _bfd_m68hc11_elf_print_private_bfd_data
#include "elf32-target.h"
--- /dev/null
+/* Motorola 68HC11/HC12-specific support for 32-bit ELF
+ Copyright 1999, 2000, 2001, 2002, 2003 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 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "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
+ PARAMS((const char *stub_name,
+ asection *section,
+ struct m68hc11_elf_link_hash_table *htab));
+
+static struct bfd_hash_entry *stub_hash_newfunc
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+
+static void m68hc11_elf_set_symbol
+ PARAMS ((bfd* abfd, struct bfd_link_info *info,
+ const char* name, bfd_vma value, asection* sec));
+
+static bfd_boolean m68hc11_elf_export_one_stub
+ PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+
+static bfd_boolean m68hc11_get_relocation_value
+ PARAMS ((bfd* abfd,
+ struct bfd_link_info* info,
+ asection **local_sections,
+ Elf_Internal_Sym* local_syms,
+ Elf_Internal_Rela* rel,
+ const char** name,
+ bfd_vma* relocation,
+ bfd_boolean* is_far));
+
+static void scan_sections_for_abi PARAMS ((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 (abfd)
+ 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_zalloc (abfd, amt);
+ if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
+ return NULL;
+
+ if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
+ _bfd_elf_link_hash_newfunc))
+ {
+ bfd_release (abfd, 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)
+ {
+ bfd_release (abfd, ret);
+ return NULL;
+ }
+ if (!bfd_hash_table_init (ret->stub_hash_table, stub_hash_newfunc))
+ 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 (hash)
+ 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 (entry, table, string)
+ 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 (stub_name, section, htab)
+ 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) (_("%s: cannot create stub entry %s"),
+ bfd_archive_filename (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 (abfd, info, sym, namep, flagsp, secp, valp)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ const 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 (output_bfd, info)
+ 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 (htab->root.root.creator->flavour != 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
+ _bfd_strip_section_from_output 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 (output_bfd, stub_bfd, info, add_stub_section)
+ bfd *output_bfd;
+ bfd *stub_bfd;
+ struct bfd_link_info *info;
+ asection * (*add_stub_section) PARAMS ((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;
+ Elf_Internal_Shdr *shndx_hdr;
+ Elf_Internal_Sym *isym;
+ Elf32_External_Sym *extsyms, *esym, *end_sy;
+ Elf_External_Sym_Shndx *shndx_buf, *shndx;
+ bfd_size_type sec_size;
+
+ /* 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.
+ Unfortunately, we're going to have to read & swap them in. */
+ sec_size = symtab_hdr->sh_info;
+ sec_size *= sizeof (Elf_Internal_Sym);
+ local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size);
+ if (local_syms == NULL)
+ goto error_ret_free_local;
+
+ all_local_syms[bfd_indx] = local_syms;
+ sec_size = symtab_hdr->sh_info;
+ sec_size *= sizeof (Elf32_External_Sym);
+
+ /* Get the cached copy. */
+ if (symtab_hdr->contents != NULL)
+ extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
+ else
+ {
+ /* Go get them off disk. */
+ bfd_size_type amt = symtab_hdr->sh_size;
+ extsyms = (Elf32_External_Sym *) bfd_malloc (amt);
+ if (extsyms == NULL)
+ goto error_ret_free_local;
+
+ if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread ((PTR) extsyms, amt, input_bfd) != amt)
+ {
+ error_ret_free_ext_syms:
+ free (extsyms);
+ goto error_ret_free_local;
+ }
+ }
+ shndx_buf = NULL;
+ shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr;
+ if (shndx_hdr->sh_size != 0)
+ {
+ bfd_size_type amt;
+
+ amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
+ shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
+ if (shndx_buf == NULL)
+ goto error_ret_free_ext_syms;
+ if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread ((PTR) shndx_buf, amt, input_bfd) != amt)
+ {
+ free (shndx_buf);
+ goto error_ret_free_ext_syms;
+ }
+ shndx_hdr->contents = (PTR) shndx_buf;
+ }
+
+ /* Swap the local symbols in. */
+ for (esym = extsyms, end_sy = esym + symtab_hdr->sh_info,
+ isym = local_syms, shndx = shndx_buf;
+ esym < end_sy;
+ esym++, isym++, shndx = (shndx ? shndx + 1 : NULL))
+ bfd_elf32_swap_symbol_in (input_bfd, esym, shndx, isym);
+
+ /* Now we can free the external symbols. */
+ free (shndx_buf);
+ }
+
+ 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_elf32_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;
+ hdr = elf_elfsections (input_bfd)[sym->st_shndx];
+ sym_sec = hdr->bfd_section;
+ is_far = (sym && (sym->st_other & STO_M68HC12_FAR));
+ if (!is_far)
+ continue;
+ 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)
+ {
+ 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->_raw_size = 0;
+ stub_sec->_cooked_size = 0;
+ }
+
+ bfd_hash_traverse (htab->stub_hash_table, htab->size_one_stub, htab);
+ }
+ free (htab->all_local_syms);
+ return TRUE;
+
+ error_ret_free_local:
+ free (htab->all_local_syms);
+ return FALSE;
+}
+
+/* Export the trampoline addresses in the symbol table. */
+static bfd_boolean
+m68hc11_elf_export_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR 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 (abfd, info, name, value, sec)
+ 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 (abfd, info)
+ 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->_raw_size;
+ stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size);
+ if (stub_sec->contents == NULL && size != 0)
+ return FALSE;
+ stub_sec->_raw_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 (info)
+ 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 (pinfo, addr)
+ 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 (pinfo, 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 (pinfo, addr)
+ 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 (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry;
+ asymbol *symbol ATTRIBUTE_UNUSED;
+ PTR 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 (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR 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 > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ abort();
+}
+
+asection *
+elf32_m68hc11_gc_mark_hook (sec, info, rel, h, sym)
+ asection *sec;
+ 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))
+ {
+ 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
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+
+ return NULL;
+}
+
+bfd_boolean
+elf32_m68hc11_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 use got and plt entries for 68hc11/68hc12. */
+ return TRUE;
+}
+
+/* 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 (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;
+
+ if (info->relocateable)
+ return TRUE;
+
+ 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];
+
+ 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_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_M68HC11_GNU_VTENTRY:
+ if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+m68hc11_get_relocation_value (abfd, info, local_sections, local_syms,
+ rel, name,
+ relocation, is_far)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection **local_sections;
+ Elf_Internal_Sym* local_syms;
+ Elf_Internal_Rela* rel;
+ const char** name;
+ bfd_vma* relocation;
+ bfd_boolean* is_far;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ unsigned long r_symndx;
+ asection *sec;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ const char* stub_name = 0;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ /* 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);
+ *is_far = (sym && (sym->st_other & STO_M68HC12_FAR));
+ if (*is_far)
+ stub_name = (bfd_elf_string_from_elf_section
+ (abfd, symtab_hdr->sh_link,
+ sym->st_name));
+ }
+ 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)
+ {
+ sec = h->root.u.def.section;
+ *relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else if (h->root.type == bfd_link_hash_undefweak)
+ *relocation = 0;
+ else
+ {
+ if (!((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, abfd,
+ sec, rel->r_offset, TRUE)))
+ return FALSE;
+ *relocation = 0;
+ }
+ *is_far = (h && (h->other & STO_M68HC12_FAR));
+ stub_name = h->root.root.string;
+ }
+
+ if (h != NULL)
+ *name = h->root.root.string;
+ else
+ {
+ *name = (bfd_elf_string_from_elf_section
+ (abfd, 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;
+ }
+ }
+ return TRUE;
+}
+
+/* Relocate a 68hc11/68hc12 ELF section. */
+bfd_boolean
+elf32_m68hc11_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ 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;
+ struct m68hc11_page_info *pinfo;
+ 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;
+ 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;
+
+ 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;
+
+ 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];
+ rel->r_addend += sec->output_offset + sym->st_value;
+ }
+ }
+
+ continue;
+ }
+ (*ebd->elf_info_to_howto_rel) (input_bfd, &arel, rel);
+ howto = arel.howto;
+
+ m68hc11_get_relocation_value (input_bfd, info,
+ local_sections, local_syms,
+ rel, &name, &relocation, &is_far);
+
+ /* 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, 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;
+}
+
+
+\f
+/* Set and control ELF flags in ELF header. */
+
+bfd_boolean
+_bfd_m68hc11_elf_set_private_flags (abfd, flags)
+ bfd *abfd;
+ flagword flags;
+{
+ BFD_ASSERT (!elf_flags_init (abfd)
+ || elf_elfheader (abfd)->e_flags == flags);
+
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = TRUE;
+ return TRUE;
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+bfd_boolean
+_bfd_m68hc11_elf_merge_private_bfd_data (ibfd, obfd)
+ 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)
+ (_("%s: linking files compiled for 16-bit integers (-mshort) "
+ "and others for 32-bit integers"),
+ bfd_archive_filename (ibfd));
+ ok = FALSE;
+ }
+ if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64))
+ {
+ (*_bfd_error_handler)
+ (_("%s: linking files compiled for 32-bit double (-fshort-double) "
+ "and others for 64-bit double"),
+ bfd_archive_filename (ibfd));
+ ok = FALSE;
+ }
+ new_flags &= ~EF_M68HC11_ABI;
+ old_flags &= ~EF_M68HC11_ABI;
+
+ /* Warn about any other mismatches */
+ if (new_flags != old_flags)
+ {
+ (*_bfd_error_handler)
+ (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
+ bfd_archive_filename (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 (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);
+
+ /* 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 (abfd, asect, arg)
+ bfd* abfd ATTRIBUTE_UNUSED;
+ asection* asect;
+ PTR 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 (abfd, link_info)
+ 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;
+ }
+}
+
--- /dev/null
+/* Motorola 68HC11/68HC12-specific support for 32-bit ELF
+ Copyright 2003 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 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. */
+
+#ifndef _ELF32_M68HC1X_H
+#define _ELF32_M68HC1X_H
+
+#include "elf-bfd.h"
+#include "bfdlink.h"
+#include "elf/m68hc11.h"
+
+/* Name of symbols exported by HC11/HC12 linker when there is a memory
+ bank window. */
+#define BFD_M68HC11_BANK_START_NAME "__bank_start"
+#define BFD_M68HC11_BANK_SIZE_NAME "__bank_size"
+#define BFD_M68HC11_BANK_VIRTUAL_NAME "__bank_virtual"
+
+/* Set and control ELF flags in ELF header. */
+extern bfd_boolean _bfd_m68hc11_elf_merge_private_bfd_data PARAMS ((bfd*,bfd*));
+extern bfd_boolean _bfd_m68hc11_elf_set_private_flags PARAMS ((bfd*,flagword));
+extern bfd_boolean _bfd_m68hc11_elf_print_private_bfd_data PARAMS ((bfd*,PTR));
+
+/* This hash entry is used to record a trampoline that must be generated
+ to call a far function using a normal calling convention ('jsr').
+ The trampoline is used when a pointer to a far function is used.
+ It takes care of installing the proper memory bank as well as creating
+ the 'call/rtc' calling convention. */
+struct elf32_m68hc11_stub_hash_entry {
+
+ /* Base hash table entry structure. */
+ struct bfd_hash_entry root;
+
+ /* The stub section. */
+ asection *stub_sec;
+
+ /* Offset within stub_sec of the beginning of this stub. */
+ bfd_vma stub_offset;
+
+ /* Given the symbol's value and its section we can determine its final
+ value when building the stubs (so the stub knows where to jump. */
+ bfd_vma target_value;
+ asection *target_section;
+};
+
+/* Placeholder for the parameters to compute memory page and physical address.
+ The following formulas are used:
+
+ sym > bank_virtual =>
+ %addr(sym) = (((sym - bank_virtual) & bank_mask) + bank_physical
+ %page(sym) = (((sym - bank_virtual) >> bank_shift) % 256
+
+ sym < bank_virtual =>
+ %addr(sym) = sym
+ %page(sym) = 0
+
+
+ These parameters are obtained from the symbol table by looking
+ at the following:
+
+ __bank_start Symbol marking the start of memory bank window
+ (bank_physical)
+ __bank_virtual Logical address of symbols for which the transformation
+ must be computed
+ __bank_page_size Size in bytes of page size (this is *NOT* the memory
+ bank window size and the window size is always
+ less or equal to the page size)
+
+ For 68HC12, the window is at 0x8000 and the page size is 16K (full window).
+ For 68HC11 this is board specific (implemented by external hardware).
+
+*/
+struct m68hc11_page_info
+{
+ bfd_vma bank_virtual;
+ bfd_vma bank_physical;
+ bfd_vma bank_physical_end;
+ bfd_vma bank_mask;
+ bfd_vma bank_size;
+ int bank_shift;
+ int bank_param_initialized;
+ bfd_vma trampoline_addr;
+};
+
+struct m68hc11_elf_link_hash_table
+{
+ struct elf_link_hash_table root;
+ struct m68hc11_page_info pinfo;
+
+ /* The stub hash table. */
+ struct bfd_hash_table* stub_hash_table;
+
+ /* Linker stub bfd. */
+ bfd *stub_bfd;
+
+ asection* stub_section;
+ asection* tramp_section;
+
+ /* Linker call-backs. */
+ asection * (*add_stub_section) PARAMS ((const char *, asection *));
+
+ /* Assorted information used by elf32_hppa_size_stubs. */
+ unsigned int bfd_count;
+ int top_index;
+ asection **input_list;
+ Elf_Internal_Sym **all_local_syms;
+
+ /* Small local sym to section mapping cache. */
+ struct sym_sec_cache sym_sec;
+
+ bfd_boolean (* size_one_stub) PARAMS((struct bfd_hash_entry*, PTR));
+ bfd_boolean (* build_one_stub) PARAMS((struct bfd_hash_entry*, PTR));
+};
+
+/* Get the Sparc64 ELF linker hash table from a link_info structure. */
+
+#define m68hc11_elf_hash_table(p) \
+ ((struct m68hc11_elf_link_hash_table *) ((p)->hash))
+
+/* Create a 68HC11/68HC12 ELF linker hash table. */
+
+extern struct m68hc11_elf_link_hash_table* m68hc11_elf_hash_table_create
+ PARAMS ((bfd*));
+extern void m68hc11_elf_bfd_link_hash_table_free
+ PARAMS ((struct bfd_link_hash_table*));
+
+extern void m68hc11_elf_get_bank_parameters
+ PARAMS ((struct bfd_link_info*));
+
+/* Return 1 if the address is in banked memory.
+ This can be applied to a virtual address and to a physical address. */
+extern int m68hc11_addr_is_banked
+ PARAMS ((struct m68hc11_page_info*, bfd_vma));
+
+/* Return the physical address seen by the processor, taking
+ into account banked memory. */
+extern bfd_vma m68hc11_phys_addr
+ PARAMS ((struct m68hc11_page_info*, bfd_vma));
+
+/* Return the page number corresponding to an address in banked memory. */
+extern bfd_vma m68hc11_phys_page
+ PARAMS ((struct m68hc11_page_info*, bfd_vma));
+
+bfd_reloc_status_type m68hc11_elf_ignore_reloc
+ PARAMS ((bfd *abfd, arelent *reloc_entry,
+ asymbol *symbol, PTR data, asection *input_section,
+ bfd *output_bfd, char **error_message));
+bfd_reloc_status_type m68hc11_elf_special_reloc
+ PARAMS ((bfd *abfd, arelent *reloc_entry,
+ asymbol *symbol, PTR data, asection *input_section,
+ bfd *output_bfd, char **error_message));
+
+/* GC mark and sweep. */
+asection *elf32_m68hc11_gc_mark_hook
+ PARAMS ((asection *sec, struct bfd_link_info *info,
+ Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym));
+bfd_boolean elf32_m68hc11_gc_sweep_hook
+ PARAMS ((bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs));
+bfd_boolean elf32_m68hc11_check_relocs
+ PARAMS ((bfd * abfd, struct bfd_link_info * info,
+ asection * sec, const Elf_Internal_Rela * relocs));
+bfd_boolean elf32_m68hc11_relocate_section
+ PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
+ bfd *input_bfd, asection *input_section,
+ bfd_byte *contents, Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms, asection **local_sections));
+
+bfd_boolean elf32_m68hc11_add_symbol_hook
+ PARAMS ((bfd *abfd, struct bfd_link_info *info,
+ const Elf_Internal_Sym *sym, const char **namep,
+ flagword *flagsp, asection **secp,
+ bfd_vma *valp));
+
+/* Tweak the OSABI field of the elf header. */
+
+extern void elf32_m68hc11_post_process_headers
+ PARAMS ((bfd*, struct bfd_link_info*));
+
+int elf32_m68hc11_setup_section_lists
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+bfd_boolean elf32_m68hc11_size_stubs
+ PARAMS ((bfd *, bfd *, struct bfd_link_info *,
+ asection * (*) PARAMS ((const char *, asection *))));
+
+bfd_boolean elf32_m68hc11_build_stubs
+ PARAMS ((bfd* abfd, struct bfd_link_info *));
+#endif
projects / thirdparty / binutils-gdb.git / commitdiff
