| /* Matsushita 10300 specific support for 32-bit ELF |
| Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "elf-bfd.h" |
| #include "elf/mn10300.h" |
| |
| struct elf32_mn10300_link_hash_entry |
| { |
| /* The basic elf link hash table entry. */ |
| struct elf_link_hash_entry root; |
| |
| /* For function symbols, the number of times this function is |
| called directly (ie by name). */ |
| unsigned int direct_calls; |
| |
| /* For function symbols, the size of this function's stack |
| (if <= 255 bytes). We stuff this into "call" instructions |
| to this target when it's valid and profitable to do so. |
| |
| This does not include stack allocated by movm! */ |
| unsigned char stack_size; |
| |
| /* For function symbols, arguments (if any) for movm instruction |
| in the prologue. We stuff this value into "call" instructions |
| to the target when it's valid and profitable to do so. */ |
| unsigned char movm_args; |
| |
| /* For funtion symbols, the amount of stack space that would be allocated |
| by the movm instruction. This is redundant with movm_args, but we |
| add it to the hash table to avoid computing it over and over. */ |
| unsigned char movm_stack_size; |
| |
| /* When set, convert all "call" instructions to this target into "calls" |
| instructions. */ |
| #define MN10300_CONVERT_CALL_TO_CALLS 0x1 |
| |
| /* Used to mark functions which have had redundant parts of their |
| prologue deleted. */ |
| #define MN10300_DELETED_PROLOGUE_BYTES 0x2 |
| unsigned char flags; |
| }; |
| |
| /* We derive a hash table from the main elf linker hash table so |
| we can store state variables and a secondary hash table without |
| resorting to global variables. */ |
| struct elf32_mn10300_link_hash_table |
| { |
| /* The main hash table. */ |
| struct elf_link_hash_table root; |
| |
| /* A hash table for static functions. We could derive a new hash table |
| instead of using the full elf32_mn10300_link_hash_table if we wanted |
| to save some memory. */ |
| struct elf32_mn10300_link_hash_table *static_hash_table; |
| |
| /* Random linker state flags. */ |
| #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 |
| char flags; |
| }; |
| |
| /* For MN10300 linker hash table. */ |
| |
| /* Get the MN10300 ELF linker hash table from a link_info structure. */ |
| |
| #define elf32_mn10300_hash_table(p) \ |
| ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) |
| |
| #define elf32_mn10300_link_hash_traverse(table, func, info) \ |
| (elf_link_hash_traverse \ |
| (&(table)->root, \ |
| (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| (info))) |
| |
| static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc |
| PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create |
| PARAMS ((bfd *)); |
| |
| static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup |
| PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
| static void mn10300_info_to_howto |
| PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); |
| static boolean mn10300_elf_check_relocs |
| PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| const Elf_Internal_Rela *)); |
| static asection *mn10300_elf_gc_mark_hook |
| PARAMS ((bfd *, struct bfd_link_info *info, Elf_Internal_Rela *, |
| struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| static boolean mn10300_elf_relax_delete_bytes |
| PARAMS ((bfd *, asection *, bfd_vma, int)); |
| static boolean mn10300_elf_symbol_address_p |
| PARAMS ((bfd *, asection *, Elf32_External_Sym *, bfd_vma)); |
| static boolean elf32_mn10300_finish_hash_table_entry |
| PARAMS ((struct bfd_hash_entry *, PTR)); |
| static void compute_function_info |
| PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *, |
| bfd_vma, unsigned char *)); |
| |
| /* We have to use RELA instructions since md_apply_fix3 in the assembler |
| does absolutely nothing. */ |
| #define USE_RELA |
| |
| |
| static reloc_howto_type elf_mn10300_howto_table[] = |
| { |
| /* Dummy relocation. Does nothing. */ |
| HOWTO (R_MN10300_NONE, |
| 0, |
| 2, |
| 16, |
| false, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_NONE", |
| false, |
| 0, |
| 0, |
| false), |
| /* Standard 32 bit reloc. */ |
| HOWTO (R_MN10300_32, |
| 0, |
| 2, |
| 32, |
| false, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_32", |
| false, |
| 0xffffffff, |
| 0xffffffff, |
| false), |
| /* Standard 16 bit reloc. */ |
| HOWTO (R_MN10300_16, |
| 0, |
| 1, |
| 16, |
| false, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_16", |
| false, |
| 0xffff, |
| 0xffff, |
| false), |
| /* Standard 8 bit reloc. */ |
| HOWTO (R_MN10300_8, |
| 0, |
| 0, |
| 8, |
| false, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_8", |
| false, |
| 0xff, |
| 0xff, |
| false), |
| /* Standard 32bit pc-relative reloc. */ |
| HOWTO (R_MN10300_PCREL32, |
| 0, |
| 2, |
| 32, |
| true, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_PCREL32", |
| false, |
| 0xffffffff, |
| 0xffffffff, |
| true), |
| /* Standard 16bit pc-relative reloc. */ |
| HOWTO (R_MN10300_PCREL16, |
| 0, |
| 1, |
| 16, |
| true, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_PCREL16", |
| false, |
| 0xffff, |
| 0xffff, |
| true), |
| /* Standard 8 pc-relative reloc. */ |
| HOWTO (R_MN10300_PCREL8, |
| 0, |
| 0, |
| 8, |
| true, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_PCREL8", |
| false, |
| 0xff, |
| 0xff, |
| true), |
| |
| /* GNU extension to record C++ vtable hierarchy */ |
| HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| NULL, /* special_function */ |
| "R_MN10300_GNU_VTINHERIT", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* GNU extension to record C++ vtable member usage */ |
| HOWTO (R_MN10300_GNU_VTENTRY, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| NULL, /* special_function */ |
| "R_MN10300_GNU_VTENTRY", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* Standard 24 bit reloc. */ |
| HOWTO (R_MN10300_24, |
| 0, |
| 2, |
| 24, |
| false, |
| 0, |
| complain_overflow_bitfield, |
| bfd_elf_generic_reloc, |
| "R_MN10300_24", |
| false, |
| 0xffffff, |
| 0xffffff, |
| false), |
| |
| }; |
| |
| struct mn10300_reloc_map |
| { |
| bfd_reloc_code_real_type bfd_reloc_val; |
| unsigned char elf_reloc_val; |
| }; |
| |
| static const struct mn10300_reloc_map mn10300_reloc_map[] = |
| { |
| { BFD_RELOC_NONE, R_MN10300_NONE, }, |
| { BFD_RELOC_32, R_MN10300_32, }, |
| { BFD_RELOC_16, R_MN10300_16, }, |
| { BFD_RELOC_8, R_MN10300_8, }, |
| { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, |
| { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, |
| { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, |
| { BFD_RELOC_24, R_MN10300_24, }, |
| { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, |
| { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, |
| }; |
| |
| static reloc_howto_type * |
| bfd_elf32_bfd_reloc_type_lookup (abfd, code) |
| bfd *abfd; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int i; |
| |
| for (i = 0; |
| i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map); |
| i++) |
| { |
| if (mn10300_reloc_map[i].bfd_reloc_val == code) |
| return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; |
| } |
| |
| return NULL; |
| } |
| |
| /* Set the howto pointer for an MN10300 ELF reloc. */ |
| |
| static void |
| mn10300_info_to_howto (abfd, cache_ptr, dst) |
| bfd *abfd; |
| arelent *cache_ptr; |
| Elf32_Internal_Rela *dst; |
| { |
| unsigned int r_type; |
| |
| r_type = ELF32_R_TYPE (dst->r_info); |
| BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); |
| cache_ptr->howto = &elf_mn10300_howto_table[r_type]; |
| } |
| |
| /* 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 boolean |
| mn10300_elf_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, **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_MN10300_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_MN10300_GNU_VTENTRY: |
| if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| return false; |
| break; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Return the section that should be marked against GC for a given |
| relocation. */ |
| |
| static asection * |
| mn10300_elf_gc_mark_hook (abfd, info, rel, h, sym) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| Elf_Internal_Rela *rel; |
| struct elf_link_hash_entry *h; |
| Elf_Internal_Sym *sym; |
| { |
| if (h != NULL) |
| { |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| case R_MN10300_GNU_VTINHERIT: |
| case R_MN10300_GNU_VTENTRY: |
| break; |
| |
| default: |
| switch (h->root.type) |
| { |
| case bfd_link_hash_defined: |
| case bfd_link_hash_defweak: |
| return h->root.u.def.section; |
| |
| case bfd_link_hash_common: |
| return h->root.u.c.p->section; |
| } |
| } |
| } |
| else |
| { |
| if (!(elf_bad_symtab (abfd) |
| && ELF_ST_BIND (sym->st_info) != STB_LOCAL) |
| && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) |
| && sym->st_shndx != SHN_COMMON)) |
| { |
| return bfd_section_from_elf_index (abfd, sym->st_shndx); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| /* Perform a relocation as part of a final link. */ |
| static bfd_reloc_status_type |
| mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
| input_section, contents, offset, value, |
| addend, info, sym_sec, is_local) |
| reloc_howto_type *howto; |
| bfd *input_bfd; |
| bfd *output_bfd; |
| asection *input_section; |
| bfd_byte *contents; |
| bfd_vma offset; |
| bfd_vma value; |
| bfd_vma addend; |
| struct bfd_link_info *info; |
| asection *sym_sec; |
| int is_local; |
| { |
| unsigned long r_type = howto->type; |
| bfd_byte *hit_data = contents + offset; |
| |
| switch (r_type) |
| { |
| case R_MN10300_NONE: |
| return bfd_reloc_ok; |
| |
| case R_MN10300_32: |
| value += addend; |
| bfd_put_32 (input_bfd, value, hit_data); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_24: |
| value += addend; |
| |
| if ((long)value > 0x7fffff || (long)value < -0x800000) |
| return bfd_reloc_overflow; |
| |
| bfd_put_8 (input_bfd, value & 0xff, hit_data); |
| bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); |
| bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_16: |
| value += addend; |
| |
| if ((long)value > 0x7fff || (long)value < -0x8000) |
| return bfd_reloc_overflow; |
| |
| bfd_put_16 (input_bfd, value, hit_data); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_8: |
| value += addend; |
| |
| if ((long)value > 0x7f || (long)value < -0x80) |
| return bfd_reloc_overflow; |
| |
| bfd_put_8 (input_bfd, value, hit_data); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_PCREL8: |
| value -= (input_section->output_section->vma |
| + input_section->output_offset); |
| value -= offset; |
| value += addend; |
| |
| if ((long)value > 0xff || (long)value < -0x100) |
| return bfd_reloc_overflow; |
| |
| bfd_put_8 (input_bfd, value, hit_data); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_PCREL16: |
| value -= (input_section->output_section->vma |
| + input_section->output_offset); |
| value -= offset; |
| value += addend; |
| |
| if ((long)value > 0xffff || (long)value < -0x10000) |
| return bfd_reloc_overflow; |
| |
| bfd_put_16 (input_bfd, value, hit_data); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_PCREL32: |
| value -= (input_section->output_section->vma |
| + input_section->output_offset); |
| value -= offset; |
| value += addend; |
| |
| bfd_put_32 (input_bfd, value, hit_data); |
| return bfd_reloc_ok; |
| |
| case R_MN10300_GNU_VTINHERIT: |
| case R_MN10300_GNU_VTENTRY: |
| return bfd_reloc_ok; |
| |
| default: |
| return bfd_reloc_notsupported; |
| } |
| } |
| |
| |
| /* Relocate an MN10300 ELF section. */ |
| static boolean |
| mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| contents, relocs, local_syms, local_sections) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| bfd *input_bfd; |
| asection *input_section; |
| bfd_byte *contents; |
| Elf_Internal_Rela *relocs; |
| Elf_Internal_Sym *local_syms; |
| asection **local_sections; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| struct elf32_mn10300_link_hash_entry **sym_hashes; |
| Elf_Internal_Rela *rel, *relend; |
| |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| sym_hashes = (struct elf32_mn10300_link_hash_entry **) |
| (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 elf32_mn10300_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); |
| howto = elf_mn10300_howto_table + r_type; |
| |
| /* Just skip the vtable gc relocs. */ |
| if (r_type == R_MN10300_GNU_VTINHERIT |
| || r_type == R_MN10300_GNU_VTENTRY) |
| 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; |
| } |
| |
| /* 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 elf32_mn10300_link_hash_entry *) h->root.root.u.i.link; |
| if (h->root.root.type == bfd_link_hash_defined |
| || h->root.root.type == bfd_link_hash_defweak) |
| { |
| sec = h->root.root.u.def.section; |
| relocation = (h->root.root.u.def.value |
| + sec->output_section->vma |
| + sec->output_offset); |
| } |
| else if (h->root.root.type == bfd_link_hash_undefweak) |
| relocation = 0; |
| else |
| { |
| if (! ((*info->callbacks->undefined_symbol) |
| (info, h->root.root.root.string, input_bfd, |
| input_section, rel->r_offset))) |
| return false; |
| relocation = 0; |
| } |
| } |
| |
| r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
| input_section, |
| contents, rel->r_offset, |
| relocation, rel->r_addend, |
| info, sec, h == NULL); |
| |
| if (r != bfd_reloc_ok) |
| { |
| const char *name; |
| const char *msg = (const char *)0; |
| |
| if (h != NULL) |
| name = h->root.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); |
| } |
| |
| switch (r) |
| { |
| case bfd_reloc_overflow: |
| if (! ((*info->callbacks->reloc_overflow) |
| (info, name, howto->name, (bfd_vma) 0, |
| input_bfd, input_section, rel->r_offset))) |
| return false; |
| break; |
| |
| case bfd_reloc_undefined: |
| if (! ((*info->callbacks->undefined_symbol) |
| (info, name, input_bfd, input_section, |
| rel->r_offset))) |
| return false; |
| break; |
| |
| case bfd_reloc_outofrange: |
| msg = _("internal error: out of range error"); |
| goto common_error; |
| |
| case bfd_reloc_notsupported: |
| msg = _("internal error: unsupported relocation error"); |
| goto common_error; |
| |
| case bfd_reloc_dangerous: |
| msg = _("internal error: dangerous error"); |
| goto common_error; |
| |
| default: |
| msg = _("internal error: unknown error"); |
| /* fall through */ |
| |
| common_error: |
| if (!((*info->callbacks->warning) |
| (info, msg, name, input_bfd, input_section, |
| rel->r_offset))) |
| return false; |
| break; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Finish initializing one hash table entry. */ |
| static boolean |
| elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) |
| struct bfd_hash_entry *gen_entry; |
| PTR in_args; |
| { |
| struct elf32_mn10300_link_hash_entry *entry; |
| unsigned int byte_count = 0; |
| |
| entry = (struct elf32_mn10300_link_hash_entry *)gen_entry; |
| |
| /* If we already know we want to convert "call" to "calls" for calls |
| to this symbol, then return now. */ |
| if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) |
| return true; |
| |
| /* If there are no named calls to this symbol, or there's nothing we |
| can move from the function itself into the "call" instruction, then |
| note that all "call" instructions should be converted into "calls" |
| instructions and return. */ |
| if (entry->direct_calls == 0 |
| || (entry->stack_size == 0 && entry->movm_args == 0)) |
| { |
| /* Make a note that we should convert "call" instructions to "calls" |
| instructions for calls to this symbol. */ |
| entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
| return true; |
| } |
| |
| /* We may be able to move some instructions from the function itself into |
| the "call" instruction. Count how many bytes we might be able to |
| eliminate in the function itself. */ |
| |
| /* A movm instruction is two bytes. */ |
| if (entry->movm_args) |
| byte_count += 2; |
| |
| /* Count the insn to allocate stack space too. */ |
| if (entry->stack_size > 0 && entry->stack_size <= 128) |
| byte_count += 3; |
| else if (entry->stack_size > 0 && entry->stack_size < 256) |
| byte_count += 4; |
| |
| /* If using "call" will result in larger code, then turn all |
| the associated "call" instructions into "calls" instrutions. */ |
| if (byte_count < entry->direct_calls) |
| entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
| |
| /* This routine never fails. */ |
| return true; |
| } |
| |
| /* This function handles relaxing for the mn10300. |
| |
| There's quite a few relaxing opportunites available on the mn10300: |
| |
| * calls:32 -> calls:16 2 bytes |
| * call:32 -> call:16 2 bytes |
| |
| * call:32 -> calls:32 1 byte |
| * call:16 -> calls:16 1 byte |
| * These are done anytime using "calls" would result |
| in smaller code, or when necessary to preserve the |
| meaning of the program. |
| |
| * call:32 varies |
| * call:16 |
| * In some circumstances we can move instructions |
| from a function prologue into a "call" instruction. |
| This is only done if the resulting code is no larger |
| than the original code. |
| |
| |
| * jmp:32 -> jmp:16 2 bytes |
| * jmp:16 -> bra:8 1 byte |
| |
| * If the previous instruction is a conditional branch |
| around the jump/bra, we may be able to reverse its condition |
| and change its target to the jump's target. The jump/bra |
| can then be deleted. 2 bytes |
| |
| * mov abs32 -> mov abs16 1 or 2 bytes |
| |
| * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes |
| - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes |
| |
| * Most instructions which accept d32 can relax to d16 1 or 2 bytes |
| - Most instructions which accept d16 can relax to d8 1 or 2 bytes |
| |
| We don't handle imm16->imm8 or d16->d8 as they're very rare |
| and somewhat more difficult to support. */ |
| |
| static boolean |
| mn10300_elf_relax_section (abfd, sec, link_info, again) |
| bfd *abfd; |
| asection *sec; |
| struct bfd_link_info *link_info; |
| boolean *again; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| Elf_Internal_Rela *internal_relocs = NULL; |
| Elf_Internal_Rela *free_relocs = NULL; |
| Elf_Internal_Rela *irel, *irelend; |
| bfd_byte *contents = NULL; |
| bfd_byte *free_contents = NULL; |
| Elf32_External_Sym *extsyms = NULL; |
| Elf32_External_Sym *free_extsyms = NULL; |
| struct elf32_mn10300_link_hash_table *hash_table; |
| |
| /* Assume nothing changes. */ |
| *again = false; |
| |
| /* We need a pointer to the mn10300 specific hash table. */ |
| hash_table = elf32_mn10300_hash_table (link_info); |
| |
| /* Initialize fields in each hash table entry the first time through. */ |
| if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) |
| { |
| bfd *input_bfd; |
| |
| /* Iterate over all the input bfds. */ |
| for (input_bfd = link_info->input_bfds; |
| input_bfd != NULL; |
| input_bfd = input_bfd->link_next) |
| { |
| asection *section; |
| |
| /* We're going to need all the symbols for each bfd. */ |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| |
| /* Get cached copy if it exists. */ |
| if (symtab_hdr->contents != NULL) |
| extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| else |
| { |
| /* Go get them off disk. */ |
| extsyms = ((Elf32_External_Sym *) |
| bfd_malloc (symtab_hdr->sh_size)); |
| if (extsyms == NULL) |
| goto error_return; |
| free_extsyms = extsyms; |
| if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| || (bfd_read (extsyms, 1, symtab_hdr->sh_size, input_bfd) |
| != symtab_hdr->sh_size)) |
| goto error_return; |
| } |
| |
| /* Iterate over each section in this bfd. */ |
| for (section = input_bfd->sections; |
| section != NULL; |
| section = section->next) |
| { |
| struct elf32_mn10300_link_hash_entry *hash; |
| Elf_Internal_Sym *sym; |
| asection *sym_sec; |
| const char *sym_name; |
| char *new_name; |
| Elf_Internal_Shdr *hdr; |
| |
| /* Get cached copy of section contents if it exists. */ |
| if (elf_section_data (section)->this_hdr.contents != NULL) |
| contents = elf_section_data (section)->this_hdr.contents; |
| else if (section->_raw_size != 0) |
| { |
| /* Go get them off disk. */ |
| contents = (bfd_byte *)bfd_malloc (section->_raw_size); |
| if (contents == NULL) |
| goto error_return; |
| free_contents = contents; |
| |
| if (!bfd_get_section_contents (input_bfd, section, |
| contents, (file_ptr) 0, |
| section->_raw_size)) |
| goto error_return; |
| } |
| else |
| { |
| contents = NULL; |
| free_contents = NULL; |
| } |
| |
| /* If there aren't any relocs, then there's nothing to do. */ |
| if ((section->flags & SEC_RELOC) != 0 |
| && section->reloc_count != 0) |
| { |
| |
| /* Get a copy of the native relocations. */ |
| internal_relocs = (_bfd_elf32_link_read_relocs |
| (input_bfd, section, (PTR) NULL, |
| (Elf_Internal_Rela *) NULL, |
| link_info->keep_memory)); |
| if (internal_relocs == NULL) |
| goto error_return; |
| if (! link_info->keep_memory) |
| free_relocs = internal_relocs; |
| |
| /* Now examine each relocation. */ |
| irel = internal_relocs; |
| irelend = irel + section->reloc_count; |
| for (; irel < irelend; irel++) |
| { |
| long r_type; |
| unsigned long r_index; |
| unsigned char code; |
| |
| r_type = ELF32_R_TYPE (irel->r_info); |
| r_index = ELF32_R_SYM (irel->r_info); |
| |
| if (r_type < 0 || r_type >= (int)R_MN10300_MAX) |
| goto error_return; |
| |
| /* We need the name and hash table entry of the target |
| symbol! */ |
| hash = NULL; |
| sym = NULL; |
| sym_sec = NULL; |
| |
| if (r_index < symtab_hdr->sh_info) |
| { |
| /* A local symbol. */ |
| Elf_Internal_Sym isym; |
| |
| bfd_elf32_swap_symbol_in (input_bfd, |
| extsyms + r_index, &isym); |
| |
| if (isym.st_shndx == SHN_UNDEF) |
| sym_sec = bfd_und_section_ptr; |
| else if (isym.st_shndx > 0 |
| && isym.st_shndx < SHN_LORESERVE) |
| sym_sec |
| = bfd_section_from_elf_index (input_bfd, |
| isym.st_shndx); |
| else if (isym.st_shndx == SHN_ABS) |
| sym_sec = bfd_abs_section_ptr; |
| else if (isym.st_shndx == SHN_COMMON) |
| sym_sec = bfd_com_section_ptr; |
| |
| sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| isym.st_name); |
| |
| /* If it isn't a function, then we don't care |
| about it. */ |
| if (r_index < symtab_hdr->sh_info |
| && ELF_ST_TYPE (isym.st_info) != STT_FUNC) |
| continue; |
| |
| /* Tack on an ID so we can uniquely identify this |
| local symbol in the global hash table. */ |
| new_name = bfd_malloc (strlen (sym_name) + 10); |
| if (new_name == 0) |
| goto error_return; |
| |
| sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
| sym_name = new_name; |
| |
| hash = (struct elf32_mn10300_link_hash_entry *) |
| elf_link_hash_lookup (&hash_table->static_hash_table->root, |
| sym_name, true, |
| true, false); |
| free (new_name); |
| } |
| else |
| { |
| r_index -= symtab_hdr->sh_info; |
| hash = (struct elf32_mn10300_link_hash_entry *) |
| elf_sym_hashes (input_bfd)[r_index]; |
| } |
| |
| /* If this is not a "call" instruction, then we |
| should convert "call" instructions to "calls" |
| instructions. */ |
| code = bfd_get_8 (input_bfd, |
| contents + irel->r_offset - 1); |
| if (code != 0xdd && code != 0xcd) |
| hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
| |
| /* If this is a jump/call, then bump the direct_calls |
| counter. Else force "call" to "calls" conversions. */ |
| if (r_type == R_MN10300_PCREL32 |
| || r_type == R_MN10300_PCREL16) |
| hash->direct_calls++; |
| else |
| hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
| } |
| } |
| |
| /* Now look at the actual contents to get the stack size, |
| and a list of what registers were saved in the prologue |
| (ie movm_args). */ |
| if ((section->flags & SEC_CODE) != 0) |
| { |
| |
| Elf32_External_Sym *esym, *esymend; |
| int idx, shndx; |
| |
| shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
| section); |
| |
| |
| /* Look at each function defined in this section and |
| update info for that function. */ |
| esym = extsyms; |
| esymend = esym + symtab_hdr->sh_info; |
| for (; esym < esymend; esym++) |
| { |
| Elf_Internal_Sym isym; |
| |
| bfd_elf32_swap_symbol_in (input_bfd, esym, &isym); |
| if (isym.st_shndx == shndx |
| && ELF_ST_TYPE (isym.st_info) == STT_FUNC) |
| { |
| if (isym.st_shndx == SHN_UNDEF) |
| sym_sec = bfd_und_section_ptr; |
| else if (isym.st_shndx > 0 |
| && isym.st_shndx < SHN_LORESERVE) |
| sym_sec |
| = bfd_section_from_elf_index (input_bfd, |
| isym.st_shndx); |
| else if (isym.st_shndx == SHN_ABS) |
| sym_sec = bfd_abs_section_ptr; |
| else if (isym.st_shndx == SHN_COMMON) |
| sym_sec = bfd_com_section_ptr; |
| |
| sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| isym.st_name); |
| |
| /* Tack on an ID so we can uniquely identify this |
| local symbol in the global hash table. */ |
| new_name = bfd_malloc (strlen (sym_name) + 10); |
| if (new_name == 0) |
| goto error_return; |
| |
| sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
| sym_name = new_name; |
| |
| hash = (struct elf32_mn10300_link_hash_entry *) |
| elf_link_hash_lookup (&hash_table->static_hash_table->root, |
| sym_name, true, |
| true, false); |
| free (new_name); |
| compute_function_info (input_bfd, hash, |
| isym.st_value, contents); |
| } |
| } |
| |
| esym = extsyms + symtab_hdr->sh_info; |
| esymend = extsyms + (symtab_hdr->sh_size |
| / sizeof (Elf32_External_Sym)); |
| for (idx = 0; esym < esymend; esym++, idx++) |
| { |
| Elf_Internal_Sym isym; |
| |
| bfd_elf32_swap_symbol_in (input_bfd, esym, &isym); |
| hash = (struct elf32_mn10300_link_hash_entry *) |
| elf_sym_hashes (input_bfd)[idx]; |
| if (isym.st_shndx == shndx |
| && ELF_ST_TYPE (isym.st_info) == STT_FUNC |
| && (hash)->root.root.u.def.section == section |
| && ((hash)->root.root.type == bfd_link_hash_defined |
| || (hash)->root.root.type == bfd_link_hash_defweak)) |
| compute_function_info (input_bfd, hash, |
| (hash)->root.root.u.def.value, |
| contents); |
| } |
| } |
| |
| /* Cache or free any memory we allocated for the relocs. */ |
| if (free_relocs != NULL) |
| { |
| free (free_relocs); |
| free_relocs = NULL; |
| } |
| |
| /* Cache or free any memory we allocated for the contents. */ |
| if (free_contents != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_contents); |
| else |
| { |
| /* Cache the section contents for elf_link_input_bfd. */ |
| elf_section_data (section)->this_hdr.contents = contents; |
| } |
| free_contents = NULL; |
| } |
| } |
| |
| /* Cache or free any memory we allocated for the symbols. */ |
| if (free_extsyms != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_extsyms); |
| else |
| { |
| /* Cache the symbols for elf_link_input_bfd. */ |
| symtab_hdr->contents = extsyms; |
| } |
| free_extsyms = NULL; |
| } |
| } |
| |
| /* Now iterate on each symbol in the hash table and perform |
| the final initialization steps on each. */ |
| elf32_mn10300_link_hash_traverse (hash_table, |
| elf32_mn10300_finish_hash_table_entry, |
| NULL); |
| elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
| elf32_mn10300_finish_hash_table_entry, |
| NULL); |
| |
| /* All entries in the hash table are fully initialized. */ |
| hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; |
| |
| /* Now that everything has been initialized, go through each |
| code section and delete any prologue insns which will be |
| redundant because their operations will be performed by |
| a "call" instruction. */ |
| for (input_bfd = link_info->input_bfds; |
| input_bfd != NULL; |
| input_bfd = input_bfd->link_next) |
| { |
| asection *section; |
| |
| /* We're going to need all the symbols for each bfd. */ |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| |
| /* Get cached copy if it exists. */ |
| if (symtab_hdr->contents != NULL) |
| extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| else |
| { |
| /* Go get them off disk. */ |
| extsyms = ((Elf32_External_Sym *) |
| bfd_malloc (symtab_hdr->sh_size)); |
| if (extsyms == NULL) |
| goto error_return; |
| free_extsyms = extsyms; |
| if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| || (bfd_read (extsyms, 1, symtab_hdr->sh_size, input_bfd) |
| != symtab_hdr->sh_size)) |
| goto error_return; |
| } |
| |
| /* Walk over each section in this bfd. */ |
| for (section = input_bfd->sections; |
| section != NULL; |
| section = section->next) |
| { |
| int shndx; |
| Elf32_External_Sym *esym, *esymend; |
| int idx; |
| |
| /* Skip non-code sections and empty sections. */ |
| if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0) |
| continue; |
| |
| if (section->reloc_count != 0) |
| { |
| /* Get a copy of the native relocations. */ |
| internal_relocs = (_bfd_elf32_link_read_relocs |
| (input_bfd, section, (PTR) NULL, |
| (Elf_Internal_Rela *) NULL, |
| link_info->keep_memory)); |
| if (internal_relocs == NULL) |
| goto error_return; |
| if (! link_info->keep_memory) |
| free_relocs = internal_relocs; |
| } |
| |
| /* Get cached copy of section contents if it exists. */ |
| if (elf_section_data (section)->this_hdr.contents != NULL) |
| contents = elf_section_data (section)->this_hdr.contents; |
| else |
| { |
| /* Go get them off disk. */ |
| contents = (bfd_byte *)bfd_malloc (section->_raw_size); |
| if (contents == NULL) |
| goto error_return; |
| free_contents = contents; |
| |
| if (!bfd_get_section_contents (input_bfd, section, |
| contents, (file_ptr) 0, |
| section->_raw_size)) |
| goto error_return; |
| } |
| |
| |
| shndx = _bfd_elf_section_from_bfd_section (input_bfd, section); |
| |
| /* Now look for any function in this section which needs |
| insns deleted from its prologue. */ |
| esym = extsyms; |
| esymend = esym + symtab_hdr->sh_info; |
| for (; esym < esymend; esym++) |
| { |
| Elf_Internal_Sym isym; |
| struct elf32_mn10300_link_hash_entry *sym_hash; |
| asection *sym_sec; |
| const char *sym_name; |
| Elf_Internal_Shdr *hdr; |
| char *new_name; |
| |
| bfd_elf32_swap_symbol_in (input_bfd, esym, &isym); |
| |
| if (isym.st_shndx != shndx) |
| continue; |
| |
| if (isym.st_shndx == SHN_UNDEF) |
| sym_sec = bfd_und_section_ptr; |
| else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) |
| sym_sec |
| = bfd_section_from_elf_index (input_bfd, isym.st_shndx); |
| else if (isym.st_shndx == SHN_ABS) |
| sym_sec = bfd_abs_section_ptr; |
| else if (isym.st_shndx == SHN_COMMON) |
| sym_sec = bfd_com_section_ptr; |
| |
| sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| isym.st_name); |
| |
| /* Tack on an ID so we can uniquely identify this |
| local symbol in the global hash table. */ |
| new_name = bfd_malloc (strlen (sym_name) + 10); |
| if (new_name == 0) |
| goto error_return; |
| sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
| sym_name = new_name; |
| |
| sym_hash = (struct elf32_mn10300_link_hash_entry *) |
| elf_link_hash_lookup (&hash_table->static_hash_table->root, |
| sym_name, false, |
| false, false); |
| |
| free (new_name); |
| if (sym_hash == NULL) |
| continue; |
| |
| if (! ((sym_hash)->flags & MN10300_CONVERT_CALL_TO_CALLS) |
| && ! ((sym_hash)->flags & MN10300_DELETED_PROLOGUE_BYTES)) |
| { |
| int bytes = 0; |
| |
| /* Note that we've changed things. */ |
| elf_section_data (section)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (section)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *)extsyms; |
| free_extsyms = NULL; |
| |
| /* Count how many bytes we're going to delete. */ |
| if (sym_hash->movm_args) |
| bytes += 2; |
| |
| if (sym_hash->stack_size && sym_hash->stack_size <= 128) |
| bytes += 3; |
| else if (sym_hash->stack_size |
| && sym_hash->stack_size < 256) |
| bytes += 4; |
| |
| /* Note that we've deleted prologue bytes for this |
| function. */ |
| sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; |
| |
| /* Actually delete the bytes. */ |
| if (!mn10300_elf_relax_delete_bytes (input_bfd, |
| section, |
| isym.st_value, |
| bytes)) |
| goto error_return; |
| |
| /* Something changed. Not strictly necessary, but |
| may lead to more relaxing opportunities. */ |
| *again = true; |
| } |
| } |
| |
| /* Look for any global functions in this section which |
| need insns deleted from their prologues. */ |
| esym = extsyms + symtab_hdr->sh_info; |
| esymend = extsyms + (symtab_hdr->sh_size |
| / sizeof (Elf32_External_Sym)); |
| for (idx = 0; esym < esymend; esym++, idx++) |
| { |
| Elf_Internal_Sym isym; |
| struct elf32_mn10300_link_hash_entry *sym_hash; |
| |
| bfd_elf32_swap_symbol_in (input_bfd, esym, &isym); |
| sym_hash = (struct elf32_mn10300_link_hash_entry *) |
| (elf_sym_hashes (input_bfd)[idx]); |
| if (isym.st_shndx == shndx |
| && (sym_hash)->root.root.u.def.section == section |
| && ! ((sym_hash)->flags & MN10300_CONVERT_CALL_TO_CALLS) |
| && ! ((sym_hash)->flags & MN10300_DELETED_PROLOGUE_BYTES)) |
| { |
| int bytes = 0; |
| |
| /* Note that we've changed things. */ |
| elf_section_data (section)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (section)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *)extsyms; |
| free_extsyms = NULL; |
| |
| /* Count how many bytes we're going to delete. */ |
| if (sym_hash->movm_args) |
| bytes += 2; |
| |
| if (sym_hash->stack_size && sym_hash->stack_size <= 128) |
| bytes += 3; |
| else if (sym_hash->stack_size |
| && sym_hash->stack_size < 256) |
| bytes += 4; |
| |
| /* Note that we've deleted prologue bytes for this |
| function. */ |
| sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; |
| |
| /* Actually delete the bytes. */ |
| if (!mn10300_elf_relax_delete_bytes (input_bfd, |
| section, |
| (sym_hash)->root.root.u.def.value, |
| bytes)) |
| goto error_return; |
| |
| /* Something changed. Not strictly necessary, but |
| may lead to more relaxing opportunities. */ |
| *again = true; |
| } |
| } |
| |
| /* Cache or free any memory we allocated for the relocs. */ |
| if (free_relocs != NULL) |
| { |
| free (free_relocs); |
| free_relocs = NULL; |
| } |
| |
| /* Cache or free any memory we allocated for the contents. */ |
| if (free_contents != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_contents); |
| else |
| { |
| /* Cache the section contents for elf_link_input_bfd. */ |
| elf_section_data (section)->this_hdr.contents = contents; |
| } |
| free_contents = NULL; |
| } |
| } |
| |
| /* Cache or free any memory we allocated for the symbols. */ |
| if (free_extsyms != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_extsyms); |
| else |
| { |
| /* Cache the symbols for elf_link_input_bfd. */ |
| symtab_hdr->contents = extsyms; |
| } |
| free_extsyms = NULL; |
| } |
| } |
| } |
| |
| |
| /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
| contents = NULL; |
| extsyms = NULL; |
| internal_relocs = NULL; |
| free_relocs = NULL; |
| free_contents = NULL; |
| free_extsyms = NULL; |
| |
| /* We don't have to do anything for a relocateable link, if |
| this section does not have relocs, or if this is not a |
| code section. */ |
| if (link_info->relocateable |
| || (sec->flags & SEC_RELOC) == 0 |
| || sec->reloc_count == 0 |
| || (sec->flags & SEC_CODE) == 0) |
| return true; |
| |
| /* If this is the first time we have been called for this section, |
| initialize the cooked size. */ |
| if (sec->_cooked_size == 0) |
| sec->_cooked_size = sec->_raw_size; |
| |
| symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| |
| /* Get a copy of the native relocations. */ |
| internal_relocs = (_bfd_elf32_link_read_relocs |
| (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
| link_info->keep_memory)); |
| if (internal_relocs == NULL) |
| goto error_return; |
| if (! link_info->keep_memory) |
| free_relocs = internal_relocs; |
| |
| /* Walk through them looking for relaxing opportunities. */ |
| irelend = internal_relocs + sec->reloc_count; |
| for (irel = internal_relocs; irel < irelend; irel++) |
| { |
| bfd_vma symval; |
| struct elf32_mn10300_link_hash_entry *h = NULL; |
| |
| /* If this isn't something that can be relaxed, then ignore |
| this reloc. */ |
| if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE |
| || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 |
| || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) |
| continue; |
| |
| /* Get the section contents if we haven't done so already. */ |
| if (contents == NULL) |
| { |
| /* Get cached copy if it exists. */ |
| if (elf_section_data (sec)->this_hdr.contents != NULL) |
| contents = elf_section_data (sec)->this_hdr.contents; |
| else |
| { |
| /* Go get them off disk. */ |
| contents = (bfd_byte *) bfd_malloc (sec->_raw_size); |
| if (contents == NULL) |
| goto error_return; |
| free_contents = contents; |
| |
| if (! bfd_get_section_contents (abfd, sec, contents, |
| (file_ptr) 0, sec->_raw_size)) |
| goto error_return; |
| } |
| } |
| |
| /* Read this BFD's symbols if we haven't done so already. */ |
| if (extsyms == NULL) |
| { |
| /* Get cached copy if it exists. */ |
| if (symtab_hdr->contents != NULL) |
| extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| else |
| { |
| /* Go get them off disk. */ |
| extsyms = ((Elf32_External_Sym *) |
| bfd_malloc (symtab_hdr->sh_size)); |
| if (extsyms == NULL) |
| goto error_return; |
| free_extsyms = extsyms; |
| if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) |
| != symtab_hdr->sh_size)) |
| goto error_return; |
| } |
| } |
| |
| /* Get the value of the symbol referred to by the reloc. */ |
| if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| { |
| Elf_Internal_Sym isym; |
| asection *sym_sec; |
| Elf_Internal_Shdr *hdr; |
| const char *sym_name; |
| char *new_name; |
| |
| /* A local symbol. */ |
| bfd_elf32_swap_symbol_in (abfd, |
| extsyms + ELF32_R_SYM (irel->r_info), |
| &isym); |
| |
| if (isym.st_shndx == SHN_UNDEF) |
| sym_sec = bfd_und_section_ptr; |
| else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) |
| sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx); |
| else if (isym.st_shndx == SHN_ABS) |
| sym_sec = bfd_abs_section_ptr; |
| else if (isym.st_shndx == SHN_COMMON) |
| sym_sec = bfd_com_section_ptr; |
| |
| symval = (isym.st_value |
| + sym_sec->output_section->vma |
| + sym_sec->output_offset); |
| sym_name = bfd_elf_string_from_elf_section (abfd, |
| symtab_hdr->sh_link, |
| isym.st_name); |
| |
| /* Tack on an ID so we can uniquely identify this |
| local symbol in the global hash table. */ |
| new_name = bfd_malloc (strlen (sym_name) + 10); |
| if (new_name == 0) |
| goto error_return; |
| sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
| sym_name = new_name; |
| |
| h = (struct elf32_mn10300_link_hash_entry *) |
| elf_link_hash_lookup (&hash_table->static_hash_table->root, |
| sym_name, false, false, false); |
| free (new_name); |
| } |
| else |
| { |
| unsigned long indx; |
| |
| /* An external symbol. */ |
| indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| h = (struct elf32_mn10300_link_hash_entry *) |
| (elf_sym_hashes (abfd)[indx]); |
| BFD_ASSERT (h != NULL); |
| if (h->root.root.type != bfd_link_hash_defined |
| && h->root.root.type != bfd_link_hash_defweak) |
| { |
| /* This appears to be a reference to an undefined |
| symbol. Just ignore it--it will be caught by the |
| regular reloc processing. */ |
| continue; |
| } |
| |
| symval = (h->root.root.u.def.value |
| + h->root.root.u.def.section->output_section->vma |
| + h->root.root.u.def.section->output_offset); |
| } |
| |
| /* For simplicity of coding, we are going to modify the section |
| contents, the section relocs, and the BFD symbol table. We |
| must tell the rest of the code not to free up this |
| information. It would be possible to instead create a table |
| of changes which have to be made, as is done in coff-mips.c; |
| that would be more work, but would require less memory when |
| the linker is run. */ |
| |
| /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative |
| branch/call, also deal with "call" -> "calls" conversions and |
| insertion of prologue data into "call" instructions. */ |
| if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32) |
| { |
| bfd_vma value = symval; |
| |
| /* If we've got a "call" instruction that needs to be turned |
| into a "calls" instruction, do so now. It saves a byte. */ |
| if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) |
| { |
| unsigned char code; |
| |
| /* Get the opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| /* Make sure we're working with a "call" instruction! */ |
| if (code == 0xdd) |
| { |
| /* Note that we've changed the relocs, section contents, |
| etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); |
| bfd_put_8 (abfd, 0xff, contents + irel->r_offset); |
| |
| /* Fix irel->r_offset and irel->r_addend. */ |
| irel->r_offset += 1; |
| irel->r_addend += 1; |
| |
| /* Delete one byte of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 3, 1)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| } |
| } |
| else if (h) |
| { |
| /* We've got a "call" instruction which needs some data |
| from target function filled in. */ |
| unsigned char code; |
| |
| /* Get the opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| /* Insert data from the target function into the "call" |
| instruction if needed. */ |
| if (code == 0xdd) |
| { |
| bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); |
| bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, |
| contents + irel->r_offset + 5); |
| } |
| } |
| |
| /* Deal with pc-relative gunk. */ |
| value -= (sec->output_section->vma + sec->output_offset); |
| value -= irel->r_offset; |
| value += irel->r_addend; |
| |
| /* See if the value will fit in 16 bits, note the high value is |
| 0x7fff + 2 as the target will be two bytes closer if we are |
| able to relax. */ |
| if ((long)value < 0x8001 && (long)value > -0x8000) |
| { |
| unsigned char code; |
| |
| /* Get the opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| if (code != 0xdc && code != 0xdd && code != 0xff) |
| continue; |
| |
| /* Note that we've changed the relocs, section contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| if (code == 0xdc) |
| bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); |
| else if (code == 0xdd) |
| bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); |
| else if (code == 0xff) |
| bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_PCREL16); |
| |
| /* Delete two bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 1, 2)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| } |
| } |
| |
| /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative |
| branch. */ |
| if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) |
| { |
| bfd_vma value = symval; |
| |
| /* If we've got a "call" instruction that needs to be turned |
| into a "calls" instruction, do so now. It saves a byte. */ |
| if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) |
| { |
| unsigned char code; |
| |
| /* Get the opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| /* Make sure we're working with a "call" instruction! */ |
| if (code == 0xcd) |
| { |
| /* Note that we've changed the relocs, section contents, |
| etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); |
| bfd_put_8 (abfd, 0xff, contents + irel->r_offset); |
| |
| /* Fix irel->r_offset and irel->r_addend. */ |
| irel->r_offset += 1; |
| irel->r_addend += 1; |
| |
| /* Delete one byte of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 1, 1)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| } |
| } |
| else if (h) |
| { |
| unsigned char code; |
| |
| /* Get the opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| /* Insert data from the target function into the "call" |
| instruction if needed. */ |
| if (code == 0xcd) |
| { |
| bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); |
| bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, |
| contents + irel->r_offset + 3); |
| } |
| } |
| |
| /* Deal with pc-relative gunk. */ |
| value -= (sec->output_section->vma + sec->output_offset); |
| value -= irel->r_offset; |
| value += irel->r_addend; |
| |
| /* See if the value will fit in 8 bits, note the high value is |
| 0x7f + 1 as the target will be one bytes closer if we are |
| able to relax. */ |
| if ((long)value < 0x80 && (long)value > -0x80) |
| { |
| unsigned char code; |
| |
| /* Get the opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| if (code != 0xcc) |
| continue; |
| |
| /* Note that we've changed the relocs, section contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_PCREL8); |
| |
| /* Delete one byte of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 1, 1)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| } |
| } |
| |
| /* Try to eliminate an unconditional 8 bit pc-relative branch |
| which immediately follows a conditional 8 bit pc-relative |
| branch around the unconditional branch. |
| |
| original: new: |
| bCC lab1 bCC' lab2 |
| bra lab2 |
| lab1: lab1: |
| |
| |
| This happens when the bCC can't reach lab2 at assembly time, |
| but due to other relaxations it can reach at link time. */ |
| if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) |
| { |
| Elf_Internal_Rela *nrel; |
| bfd_vma value = symval; |
| unsigned char code; |
| |
| /* Deal with pc-relative gunk. */ |
| value -= (sec->output_section->vma + sec->output_offset); |
| value -= irel->r_offset; |
| value += irel->r_addend; |
| |
| /* Do nothing if this reloc is the last byte in the section. */ |
| if (irel->r_offset == sec->_cooked_size) |
| continue; |
| |
| /* See if the next instruction is an unconditional pc-relative |
| branch, more often than not this test will fail, so we |
| test it first to speed things up. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset + 1); |
| if (code != 0xca) |
| continue; |
| |
| /* Also make sure the next relocation applies to the next |
| instruction and that it's a pc-relative 8 bit branch. */ |
| nrel = irel + 1; |
| if (nrel == irelend |
| || irel->r_offset + 2 != nrel->r_offset |
| || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) |
| continue; |
| |
| /* Make sure our destination immediately follows the |
| unconditional branch. */ |
| if (symval != (sec->output_section->vma + sec->output_offset |
| + irel->r_offset + 3)) |
| continue; |
| |
| /* Now make sure we are a conditional branch. This may not |
| be necessary, but why take the chance. |
| |
| Note these checks assume that R_MN10300_PCREL8 relocs |
| only occur on bCC and bCCx insns. If they occured |
| elsewhere, we'd need to know the start of this insn |
| for this check to be accurate. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| if (code != 0xc0 && code != 0xc1 && code != 0xc2 |
| && code != 0xc3 && code != 0xc4 && code != 0xc5 |
| && code != 0xc6 && code != 0xc7 && code != 0xc8 |
| && code != 0xc9 && code != 0xe8 && code != 0xe9 |
| && code != 0xea && code != 0xeb) |
| continue; |
| |
| /* We also have to be sure there is no symbol/label |
| at the unconditional branch. */ |
| if (mn10300_elf_symbol_address_p (abfd, sec, extsyms, |
| irel->r_offset + 1)) |
| continue; |
| |
| /* Note that we've changed the relocs, section contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Reverse the condition of the first branch. */ |
| switch (code) |
| { |
| case 0xc8: |
| code = 0xc9; |
| break; |
| case 0xc9: |
| code = 0xc8; |
| break; |
| case 0xc0: |
| code = 0xc2; |
| break; |
| case 0xc2: |
| code = 0xc0; |
| break; |
| case 0xc3: |
| code = 0xc1; |
| break; |
| case 0xc1: |
| code = 0xc3; |
| break; |
| case 0xc4: |
| code = 0xc6; |
| break; |
| case 0xc6: |
| code = 0xc4; |
| break; |
| case 0xc7: |
| code = 0xc5; |
| break; |
| case 0xc5: |
| code = 0xc7; |
| break; |
| case 0xe8: |
| code = 0xe9; |
| break; |
| case 0x9d: |
| code = 0xe8; |
| break; |
| case 0xea: |
| code = 0xeb; |
| break; |
| case 0xeb: |
| code = 0xea; |
| break; |
| } |
| bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
| |
| /* Set the reloc type and symbol for the first branch |
| from the second branch. */ |
| irel->r_info = nrel->r_info; |
| |
| /* Make the reloc for the second branch a null reloc. */ |
| nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), |
| R_MN10300_NONE); |
| |
| /* Delete two bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 1, 2)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| } |
| |
| |
| /* Try to turn a 32bit immediate, displacement or absolute address |
| into a 16bit immediate, displacement or absolute address. */ |
| if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32) |
| { |
| bfd_vma value = symval; |
| value += irel->r_addend; |
| |
| |
| /* See if the value will fit in 16 bits. |
| We allow any 16bit match here. We prune those we can't |
| handle below. */ |
| if ((long)value < 0x7fff && (long)value > -0x8000) |
| { |
| unsigned char code; |
| |
| /* Most insns which have 32bit operands are 6 bytes long; |
| exceptions are pcrel insns and bit insns. |
| |
| We handle pcrel insns above. We don't bother trying |
| to handle the bit insns here. |
| |
| The first byte of the remaining insns will be 0xfc. */ |
| |
| /* Get the first opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 2); |
| |
| if (code != 0xfc) |
| continue; |
| |
| /* Get the second opcode. */ |
| code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
| |
| if ((code & 0xf0) < 0x80) |
| switch (code & 0xf0) |
| { |
| /* mov (d32,am),dn -> mov (d32,am),dn |
| mov dm,(d32,am) -> mov dn,(d32,am) |
| mov (d32,am),an -> mov (d32,am),an |
| mov dm,(d32,am) -> mov dn,(d32,am) |
| movbu (d32,am),dn -> movbu (d32,am),dn |
| movbu dm,(d32,am) -> movbu dn,(d32,am) |
| movhu (d32,am),dn -> movhu (d32,am),dn |
| movhu dm,(d32,am) -> movhu dn,(d32,am) */ |
| case 0x00: |
| case 0x10: |
| case 0x20: |
| case 0x30: |
| case 0x40: |
| case 0x50: |
| case 0x60: |
| case 0x70: |
| /* Not safe if the high bit is on as relaxing may |
| move the value out of high mem and thus not fit |
| in a signed 16bit value. */ |
| if (code == 0xcc |
| && (value & 0x8000)) |
| continue; |
| |
| /* Note that we've changed the relocation contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
| bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_16); |
| |
| /* Delete two bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 2, 2)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| break; |
| } |
| else if ((code & 0xf0) == 0x80 |
| || (code & 0xf0) == 0x90) |
| switch (code & 0xf3) |
| { |
| /* mov dn,(abs32) -> mov dn,(abs16) |
| movbu dn,(abs32) -> movbu dn,(abs16) |
| movhu dn,(abs32) -> movhu dn,(abs16) */ |
| case 0x81: |
| case 0x82: |
| case 0x83: |
| /* Note that we've changed the relocation contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| if ((code & 0xf3) == 0x81) |
| code = 0x01 + (code & 0x0c); |
| else if ((code & 0xf3) == 0x82) |
| code = 0x02 + (code & 0x0c); |
| else if ((code & 0xf3) == 0x83) |
| code = 0x03 + (code & 0x0c); |
| else |
| abort (); |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, code, contents + irel->r_offset - 2); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_16); |
| |
| /* The opcode got shorter too, so we have to fix the |
| addend and offset too! */ |
| irel->r_offset -= 1; |
| |
| /* Delete three bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 1, 3)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| break; |
| |
| /* mov am,(abs32) -> mov am,(abs16) |
| mov am,(d32,sp) -> mov am,(d16,sp) |
| mov dm,(d32,sp) -> mov dm,(d32,sp) |
| movbu dm,(d32,sp) -> movbu dm,(d32,sp) |
| movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ |
| case 0x80: |
| case 0x90: |
| case 0x91: |
| case 0x92: |
| case 0x93: |
| /* Note that we've changed the relocation contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
| bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_16); |
| |
| /* Delete two bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 2, 2)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| break; |
| } |
| else if ((code & 0xf0) < 0xf0) |
| switch (code & 0xfc) |
| { |
| /* mov imm32,dn -> mov imm16,dn |
| mov imm32,an -> mov imm16,an |
| mov (abs32),dn -> mov (abs16),dn |
| movbu (abs32),dn -> movbu (abs16),dn |
| movhu (abs32),dn -> movhu (abs16),dn */ |
| case 0xcc: |
| case 0xdc: |
| case 0xa4: |
| case 0xa8: |
| case 0xac: |
| /* Not safe if the high bit is on as relaxing may |
| move the value out of high mem and thus not fit |
| in a signed 16bit value. */ |
| if (code == 0xcc |
| && (value & 0x8000)) |
| continue; |
| |
| /* Note that we've changed the relocation contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| if ((code & 0xfc) == 0xcc) |
| code = 0x2c + (code & 0x03); |
| else if ((code & 0xfc) == 0xdc) |
| code = 0x24 + (code & 0x03); |
| else if ((code & 0xfc) == 0xa4) |
| code = 0x30 + (code & 0x03); |
| else if ((code & 0xfc) == 0xa8) |
| code = 0x34 + (code & 0x03); |
| else if ((code & 0xfc) == 0xac) |
| code = 0x38 + (code & 0x03); |
| else |
| abort (); |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, code, contents + irel->r_offset - 2); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_16); |
| |
| /* The opcode got shorter too, so we have to fix the |
| addend and offset too! */ |
| irel->r_offset -= 1; |
| |
| /* Delete three bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 1, 3)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| break; |
| |
| /* mov (abs32),an -> mov (abs16),an |
| mov (d32,sp),an -> mov (d32,sp),an |
| mov (d32,sp),dn -> mov (d32,sp),dn |
| movbu (d32,sp),dn -> movbu (d32,sp),dn |
| movhu (d32,sp),dn -> movhu (d32,sp),dn |
| add imm32,dn -> add imm16,dn |
| cmp imm32,dn -> cmp imm16,dn |
| add imm32,an -> add imm16,an |
| cmp imm32,an -> cmp imm16,an |
| and imm32,dn -> and imm32,dn |
| or imm32,dn -> or imm32,dn |
| xor imm32,dn -> xor imm32,dn |
| btst imm32,dn -> btst imm32,dn */ |
| |
| case 0xa0: |
| case 0xb0: |
| case 0xb1: |
| case 0xb2: |
| case 0xb3: |
| case 0xc0: |
| case 0xc8: |
| |
| case 0xd0: |
| case 0xd8: |
| case 0xe0: |
| case 0xe1: |
| case 0xe2: |
| case 0xe3: |
| /* Note that we've changed the relocation contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
| bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_16); |
| |
| /* Delete two bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 2, 2)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| break; |
| } |
| else if (code == 0xfe) |
| { |
| /* add imm32,sp -> add imm16,sp */ |
| |
| /* Note that we've changed the relocation contents, etc. */ |
| elf_section_data (sec)->relocs = internal_relocs; |
| free_relocs = NULL; |
| |
| elf_section_data (sec)->this_hdr.contents = contents; |
| free_contents = NULL; |
| |
| symtab_hdr->contents = (bfd_byte *) extsyms; |
| free_extsyms = NULL; |
| |
| /* Fix the opcode. */ |
| bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
| bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); |
| |
| /* Fix the relocation's type. */ |
| irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| R_MN10300_16); |
| |
| /* Delete two bytes of data. */ |
| if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
| irel->r_offset + 2, 2)) |
| goto error_return; |
| |
| /* That will change things, so, we should relax again. |
| Note that this is not required, and it may be slow. */ |
| *again = true; |
| break; |
| } |
| } |
| } |
| } |
| |
| if (free_relocs != NULL) |
| { |
| free (free_relocs); |
| free_relocs = NULL; |
| } |
| |
| if (free_contents != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_contents); |
| else |
| { |
| /* Cache the section contents for elf_link_input_bfd. */ |
| elf_section_data (sec)->this_hdr.contents = contents; |
| } |
| free_contents = NULL; |
| } |
| |
| if (free_extsyms != NULL) |
| { |
| if (! link_info->keep_memory) |
| free (free_extsyms); |
| else |
| { |
| /* Cache the symbols for elf_link_input_bfd. */ |
| symtab_hdr->contents = extsyms; |
| } |
| free_extsyms = NULL; |
| } |
| |
| return true; |
| |
| error_return: |
| if (free_relocs != NULL) |
| free (free_relocs); |
| if (free_contents != NULL) |
| free (free_contents); |
| if (free_extsyms != NULL) |
| free (free_extsyms); |
| return false; |
| } |
| |
| /* Compute the stack size and movm arguments for the function |
| referred to by HASH at address ADDR in section with |
| contents CONTENTS, store the information in the hash table. */ |
| static void |
| compute_function_info (abfd, hash, addr, contents) |
| bfd *abfd; |
| struct elf32_mn10300_link_hash_entry *hash; |
| bfd_vma addr; |
| unsigned char *contents; |
| { |
| unsigned char byte1, byte2; |
| /* We only care about a very small subset of the possible prologue |
| sequences here. Basically we look for: |
| |
| movm [d2,d3,a2,a3],sp (optional) |
| add <size>,sp (optional, and only for sizes which fit in an unsigned |
| 8 bit number) |
| |
| If we find anything else, we quit. */ |
| |
| /* Look for movm [regs],sp */ |
| byte1 = bfd_get_8 (abfd, contents + addr); |
| byte2 = bfd_get_8 (abfd, contents + addr + 1); |
| |
| if (byte1 == 0xcf) |
| { |
| hash->movm_args = byte2; |
| addr += 2; |
| byte1 = bfd_get_8 (abfd, contents + addr); |
| byte2 = bfd_get_8 (abfd, contents + addr + 1); |
| } |
| |
| /* Now figure out how much stack space will be allocated by the movm |
| instruction. We need this kept separate from the funtion's normal |
| stack space. */ |
| if (hash->movm_args) |
| { |
| /* Space for d2. */ |
| if (hash->movm_args & 0x80) |
| hash->movm_stack_size += 4; |
| |
| /* Space for d3. */ |
| if (hash->movm_args & 0x40) |
| hash->movm_stack_size += 4; |
| |
| /* Space for a2. */ |
| if (hash->movm_args & 0x20) |
| hash->movm_stack_size += 4; |
| |
| /* Space for a3. */ |
| if (hash->movm_args & 0x10) |
| hash->movm_stack_size += 4; |
| |
| /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ |
| if (hash->movm_args & 0x08) |
| hash->movm_stack_size += 8 * 4; |
| |
| } |
| |
| /* Now look for the two stack adjustment variants. */ |
| if (byte1 == 0xf8 && byte2 == 0xfe) |
| { |
| int temp = bfd_get_8 (abfd, contents + addr + 2); |
| temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; |
| |
| hash->stack_size = -temp; |
| } |
| else if (byte1 == 0xfa && byte2 == 0xfe) |
| { |
| int temp = bfd_get_16 (abfd, contents + addr + 2); |
| temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; |
| temp = -temp; |
| |
| if (temp < 255) |
| hash->stack_size = temp; |
| } |
| |
| /* If the total stack to be allocated by the call instruction is more |
| than 255 bytes, then we can't remove the stack adjustment by using |
| "call" (we might still be able to remove the "movm" instruction. */ |
| if (hash->stack_size + hash->movm_stack_size > 255) |
| hash->stack_size = 0; |
| |
| return; |
| } |
| |
| /* Delete some bytes from a section while relaxing. */ |
| |
| static boolean |
| mn10300_elf_relax_delete_bytes (abfd, sec, addr, count) |
| bfd *abfd; |
| asection *sec; |
| bfd_vma addr; |
| int count; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| Elf32_External_Sym *extsyms; |
| int shndx, index; |
| bfd_byte *contents; |
| Elf_Internal_Rela *irel, *irelend; |
| Elf_Internal_Rela *irelalign; |
| bfd_vma toaddr; |
| Elf32_External_Sym *esym, *esymend; |
| struct elf32_mn10300_link_hash_entry *sym_hash; |
| |
| symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| |
| shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
| |
| contents = elf_section_data (sec)->this_hdr.contents; |
| |
| /* The deletion must stop at the next ALIGN reloc for an aligment |
| power larger than the number of bytes we are deleting. */ |
| |
| irelalign = NULL; |
| toaddr = sec->_cooked_size; |
| |
| irel = elf_section_data (sec)->relocs; |
| irelend = irel + sec->reloc_count; |
| |
| /* Actually delete the bytes. */ |
| memmove (contents + addr, contents + addr + count, toaddr - addr - count); |
| sec->_cooked_size -= count; |
| |
| /* Adjust all the relocs. */ |
| for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
| { |
| /* Get the new reloc address. */ |
| if ((irel->r_offset > addr |
| && irel->r_offset < toaddr)) |
| irel->r_offset -= count; |
| } |
| |
| /* Adjust the local symbols defined in this section. */ |
| esym = extsyms; |
| esymend = esym + symtab_hdr->sh_info; |
| for (; esym < esymend; esym++) |
| { |
| Elf_Internal_Sym isym; |
| |
| bfd_elf32_swap_symbol_in (abfd, esym, &isym); |
| |
| if (isym.st_shndx == shndx |
| && isym.st_value > addr |
| && isym.st_value < toaddr) |
| { |
| isym.st_value -= count; |
| bfd_elf32_swap_symbol_out (abfd, &isym, esym); |
| } |
| } |
| |
| /* Now adjust the global symbols defined in this section. */ |
| esym = extsyms + symtab_hdr->sh_info; |
| esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); |
| for (index = 0; esym < esymend; esym++, index++) |
| { |
| Elf_Internal_Sym isym; |
| |
| bfd_elf32_swap_symbol_in (abfd, esym, &isym); |
| sym_hash = (struct elf32_mn10300_link_hash_entry *) |
| (elf_sym_hashes (abfd)[index]); |
| if (isym.st_shndx == shndx |
| && ((sym_hash)->root.root.type == bfd_link_hash_defined |
| || (sym_hash)->root.root.type == bfd_link_hash_defweak) |
| && (sym_hash)->root.root.u.def.section == sec |
| && (sym_hash)->root.root.u.def.value > addr |
| && (sym_hash)->root.root.u.def.value < toaddr) |
| { |
| (sym_hash)->root.root.u.def.value -= count; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Return true if a symbol exists at the given address, else return |
| false. */ |
| static boolean |
| mn10300_elf_symbol_address_p (abfd, sec, extsyms, addr) |
| bfd *abfd; |
| asection *sec; |
| Elf32_External_Sym *extsyms; |
| bfd_vma addr; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| int shndx; |
| Elf32_External_Sym *esym, *esymend; |
| struct elf32_mn10300_link_hash_entry **sym_hash, **sym_hash_end; |
| |
| symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
| |
| /* Examine all the symbols. */ |
| esym = extsyms; |
| esymend = esym + symtab_hdr->sh_info; |
| for (; esym < esymend; esym++) |
| { |
| Elf_Internal_Sym isym; |
| |
| bfd_elf32_swap_symbol_in (abfd, esym, &isym); |
| |
| if (isym.st_shndx == shndx |
| && isym.st_value == addr) |
| return true; |
| } |
| |
| sym_hash = (struct elf32_mn10300_link_hash_entry **)(elf_sym_hashes (abfd)); |
| sym_hash_end = (sym_hash |
| + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
| - symtab_hdr->sh_info)); |
| for (; sym_hash < sym_hash_end; sym_hash++) |
| { |
| if (((*sym_hash)->root.root.type == bfd_link_hash_defined |
| || (*sym_hash)->root.root.type == bfd_link_hash_defweak) |
| && (*sym_hash)->root.root.u.def.section == sec |
| && (*sym_hash)->root.root.u.def.value == addr) |
| return true; |
| } |
| return false; |
| } |
| |
| /* This is a version of bfd_generic_get_relocated_section_contents |
| which uses mn10300_elf_relocate_section. */ |
| |
| static bfd_byte * |
| mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, |
| data, relocateable, symbols) |
| bfd *output_bfd; |
| struct bfd_link_info *link_info; |
| struct bfd_link_order *link_order; |
| bfd_byte *data; |
| boolean relocateable; |
| asymbol **symbols; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| asection *input_section = link_order->u.indirect.section; |
| bfd *input_bfd = input_section->owner; |
| asection **sections = NULL; |
| Elf_Internal_Rela *internal_relocs = NULL; |
| Elf32_External_Sym *external_syms = NULL; |
| Elf_Internal_Sym *internal_syms = NULL; |
| |
| /* We only need to handle the case of relaxing, or of having a |
| particular set of section contents, specially. */ |
| if (relocateable |
| || elf_section_data (input_section)->this_hdr.contents == NULL) |
| return bfd_generic_get_relocated_section_contents (output_bfd, link_info, |
| link_order, data, |
| relocateable, |
| symbols); |
| |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| |
| memcpy (data, elf_section_data (input_section)->this_hdr.contents, |
| input_section->_raw_size); |
| |
| if ((input_section->flags & SEC_RELOC) != 0 |
| && input_section->reloc_count > 0) |
| { |
| Elf_Internal_Sym *isymp; |
| asection **secpp; |
| Elf32_External_Sym *esym, *esymend; |
| |
| if (symtab_hdr->contents != NULL) |
| external_syms = (Elf32_External_Sym *) symtab_hdr->contents; |
| else |
| { |
| external_syms = ((Elf32_External_Sym *) |
| bfd_malloc (symtab_hdr->sh_info |
| * sizeof (Elf32_External_Sym))); |
| if (external_syms == NULL && symtab_hdr->sh_info > 0) |
| goto error_return; |
| if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| || (bfd_read (external_syms, sizeof (Elf32_External_Sym), |
| symtab_hdr->sh_info, input_bfd) |
| != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) |
| goto error_return; |
| } |
| |
| internal_relocs = (_bfd_elf32_link_read_relocs |
| (input_bfd, input_section, (PTR) NULL, |
| (Elf_Internal_Rela *) NULL, false)); |
| if (internal_relocs == NULL) |
| goto error_return; |
| |
| internal_syms = ((Elf_Internal_Sym *) |
| bfd_malloc (symtab_hdr->sh_info |
| * sizeof (Elf_Internal_Sym))); |
| if (internal_syms == NULL && symtab_hdr->sh_info > 0) |
| goto error_return; |
| |
| sections = (asection **) bfd_malloc (symtab_hdr->sh_info |
| * sizeof (asection *)); |
| if (sections == NULL && symtab_hdr->sh_info > 0) |
| goto error_return; |
| |
| isymp = internal_syms; |
| secpp = sections; |
| esym = external_syms; |
| esymend = esym + symtab_hdr->sh_info; |
| for (; esym < esymend; ++esym, ++isymp, ++secpp) |
| { |
| asection *isec; |
| |
| bfd_elf32_swap_symbol_in (input_bfd, esym, isymp); |
| |
| if (isymp->st_shndx == SHN_UNDEF) |
| isec = bfd_und_section_ptr; |
| else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE) |
| isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx); |
| else if (isymp->st_shndx == SHN_ABS) |
| isec = bfd_abs_section_ptr; |
| else if (isymp->st_shndx == SHN_COMMON) |
| isec = bfd_com_section_ptr; |
| else |
| { |
| /* Who knows? */ |
| isec = NULL; |
| } |
| |
| *secpp = isec; |
| } |
| |
| if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, |
| input_section, data, internal_relocs, |
| internal_syms, sections)) |
| goto error_return; |
| |
| if (sections != NULL) |
| free (sections); |
| sections = NULL; |
| if (internal_syms != NULL) |
| free (internal_syms); |
| internal_syms = NULL; |
| if (external_syms != NULL && symtab_hdr->contents == NULL) |
| free (external_syms); |
| external_syms = NULL; |
| if (internal_relocs != elf_section_data (input_section)->relocs) |
| free (internal_relocs); |
| internal_relocs = NULL; |
| } |
| |
| return data; |
| |
| error_return: |
| if (internal_relocs != NULL |
| && internal_relocs != elf_section_data (input_section)->relocs) |
| free (internal_relocs); |
| if (external_syms != NULL && symtab_hdr->contents == NULL) |
| free (external_syms); |
| if (internal_syms != NULL) |
| free (internal_syms); |
| if (sections != NULL) |
| free (sections); |
| return NULL; |
| } |
| |
| /* Assorted hash table functions. */ |
| |
| /* Initialize an entry in the link hash table. */ |
| |
| /* Create an entry in an MN10300 ELF linker hash table. */ |
| |
| static struct bfd_hash_entry * |
| elf32_mn10300_link_hash_newfunc (entry, table, string) |
| struct bfd_hash_entry *entry; |
| struct bfd_hash_table *table; |
| const char *string; |
| { |
| struct elf32_mn10300_link_hash_entry *ret = |
| (struct elf32_mn10300_link_hash_entry *) entry; |
| |
| /* Allocate the structure if it has not already been allocated by a |
| subclass. */ |
| if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) |
| ret = ((struct elf32_mn10300_link_hash_entry *) |
| bfd_hash_allocate (table, |
| sizeof (struct elf32_mn10300_link_hash_entry))); |
| if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) |
| return (struct bfd_hash_entry *) ret; |
| |
| /* Call the allocation method of the superclass. */ |
| ret = ((struct elf32_mn10300_link_hash_entry *) |
| _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| table, string)); |
| if (ret != (struct elf32_mn10300_link_hash_entry *) NULL) |
| { |
| ret->direct_calls = 0; |
| ret->stack_size = 0; |
| ret->movm_stack_size = 0; |
| ret->flags = 0; |
| ret->movm_args = 0; |
| } |
| |
| return (struct bfd_hash_entry *) ret; |
| } |
| |
| /* Create an mn10300 ELF linker hash table. */ |
| |
| static struct bfd_link_hash_table * |
| elf32_mn10300_link_hash_table_create (abfd) |
| bfd *abfd; |
| { |
| struct elf32_mn10300_link_hash_table *ret; |
| |
| ret = ((struct elf32_mn10300_link_hash_table *) |
| bfd_alloc (abfd, sizeof (struct elf32_mn10300_link_hash_table))); |
| if (ret == (struct elf32_mn10300_link_hash_table *) NULL) |
| return NULL; |
| |
| if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| elf32_mn10300_link_hash_newfunc)) |
| { |
| bfd_release (abfd, ret); |
| return NULL; |
| } |
| |
| ret->flags = 0; |
| ret->static_hash_table |
| = ((struct elf32_mn10300_link_hash_table *) |
| bfd_alloc (abfd, sizeof (struct elf_link_hash_table))); |
| if (ret->static_hash_table == NULL) |
| { |
| bfd_release (abfd, ret); |
| return NULL; |
| } |
| |
| if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
| elf32_mn10300_link_hash_newfunc)) |
| { |
| bfd_release (abfd, ret->static_hash_table); |
| bfd_release (abfd, ret); |
| return NULL; |
| } |
| return &ret->root.root; |
| } |
| |
| static int |
| elf_mn10300_mach (flags) |
| flagword flags; |
| { |
| switch (flags & EF_MN10300_MACH) |
| { |
| case E_MN10300_MACH_MN10300: |
| default: |
| return bfd_mach_mn10300; |
| |
| } |
| } |
| |
| /* The final processing done just before writing out a MN10300 ELF object |
| file. This gets the MN10300 architecture right based on the machine |
| number. */ |
| |
| /*ARGSUSED*/ |
| void |
| _bfd_mn10300_elf_final_write_processing (abfd, linker) |
| bfd *abfd; |
| boolean linker; |
| { |
| unsigned long val; |
| unsigned int i; |
| Elf_Internal_Shdr **hdrpp; |
| const char *name; |
| asection *sec; |
| |
| switch (bfd_get_mach (abfd)) |
| { |
| default: |
| case bfd_mach_mn10300: |
| val = E_MN10300_MACH_MN10300; |
| break; |
| |
| } |
| |
| elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); |
| elf_elfheader (abfd)->e_flags |= val; |
| } |
| |
| boolean |
| _bfd_mn10300_elf_object_p (abfd) |
| bfd *abfd; |
| { |
| bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, |
| elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
| return true; |
| } |
| |
| /* Merge backend specific data from an object file to the output |
| object file when linking. */ |
| |
| boolean |
| _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) |
| bfd *ibfd; |
| bfd *obfd; |
| { |
| if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| return true; |
| |
| if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) |
| { |
| if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| bfd_get_mach (ibfd))) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| |
| #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
| #define TARGET_LITTLE_NAME "elf32-mn10300" |
| #define ELF_ARCH bfd_arch_mn10300 |
| #define ELF_MACHINE_CODE EM_CYGNUS_MN10300 |
| #define ELF_MAXPAGESIZE 0x1000 |
| |
| #define elf_info_to_howto mn10300_info_to_howto |
| #define elf_info_to_howto_rel 0 |
| #define elf_backend_can_gc_sections 1 |
| #define elf_backend_check_relocs mn10300_elf_check_relocs |
| #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook |
| #define elf_backend_relocate_section mn10300_elf_relocate_section |
| #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section |
| #define bfd_elf32_bfd_get_relocated_section_contents \ |
| mn10300_elf_get_relocated_section_contents |
| #define bfd_elf32_bfd_link_hash_table_create \ |
| elf32_mn10300_link_hash_table_create |
| |
| #define elf_symbol_leading_char '_' |
| |
| /* So we can set bits in e_flags. */ |
| #define elf_backend_final_write_processing \ |
| _bfd_mn10300_elf_final_write_processing |
| #define elf_backend_object_p _bfd_mn10300_elf_object_p |
| |
| #define bfd_elf32_bfd_merge_private_bfd_data \ |
| _bfd_mn10300_elf_merge_private_bfd_data |
| |
| |
| #include "elf32-target.h" |