X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf-m10300.c;h=d41906ce1983645e6a6782c132675fa41f616a15;hb=83bac4b0108234603a1674d820d0188c9f8c4e68;hp=8f94bbfb73d1d861cc4e42e2fee288579524e58b;hpb=17ea634937fc598b248628b5e533323a6a9f4d82;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf-m10300.c b/bfd/elf-m10300.c index 8f94bbfb73..d41906ce19 100644 --- a/bfd/elf-m10300.c +++ b/bfd/elf-m10300.c @@ -1,30 +1,39 @@ /* Matsushita 10300 specific support for 32-bit ELF - Copyright 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. + Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, + 2006, 2007 Free Software Foundation, Inc. -This file is part of BFD, the Binary File Descriptor library. + 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 free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + 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. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/mn10300.h" +#include "libiberty.h" -struct elf32_mn10300_link_hash_entry { +/* The mn10300 linker needs to keep track of the number of relocs that + it decides to copy in check_relocs for each symbol. This is so + that it can discard PC relative relocs if it doesn't need them when + linking with -Bsymbolic. We store the information in a field + extending the regular ELF linker hash table. */ + +struct elf32_mn10300_link_hash_entry +{ /* The basic elf link hash table entry. */ struct elf_link_hash_entry root; @@ -44,7 +53,7 @@ struct elf32_mn10300_link_hash_entry { 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 + /* For function 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; @@ -57,12 +66,16 @@ struct elf32_mn10300_link_hash_entry { prologue deleted. */ #define MN10300_DELETED_PROLOGUE_BYTES 0x2 unsigned char flags; + + /* Calculated value. */ + bfd_vma value; }; /* 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 { +struct elf32_mn10300_link_hash_table +{ /* The main hash table. */ struct elf_link_hash_table root; @@ -76,6 +89,10 @@ struct elf32_mn10300_link_hash_table { char flags; }; +#ifndef streq +#define streq(a, b) (strcmp ((a),(b)) == 0) +#endif + /* For MN10300 linker hash table. */ /* Get the MN10300 ELF linker hash table from a link_info structure. */ @@ -86,190 +103,397 @@ struct elf32_mn10300_link_hash_table { #define elf32_mn10300_link_hash_traverse(table, func, info) \ (elf_link_hash_traverse \ (&(table)->root, \ - (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ + (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (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[] = { +static reloc_howto_type elf_mn10300_howto_table[] = +{ /* Dummy relocation. Does nothing. */ HOWTO (R_MN10300_NONE, 0, 2, 16, - false, + FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_NONE", - false, + FALSE, 0, 0, - false), + FALSE), /* Standard 32 bit reloc. */ HOWTO (R_MN10300_32, 0, 2, 32, - false, + FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_32", - false, + FALSE, 0xffffffff, 0xffffffff, - false), + FALSE), /* Standard 16 bit reloc. */ HOWTO (R_MN10300_16, 0, 1, 16, - false, + FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_16", - false, + FALSE, 0xffff, 0xffff, - false), + FALSE), /* Standard 8 bit reloc. */ HOWTO (R_MN10300_8, 0, 0, 8, - false, + FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_8", - false, + FALSE, 0xff, 0xff, - false), + FALSE), /* Standard 32bit pc-relative reloc. */ HOWTO (R_MN10300_PCREL32, 0, 2, 32, - true, + TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_PCREL32", - false, + FALSE, 0xffffffff, 0xffffffff, - true), + TRUE), /* Standard 16bit pc-relative reloc. */ HOWTO (R_MN10300_PCREL16, 0, 1, 16, - true, + TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_PCREL16", - false, + FALSE, 0xffff, 0xffff, - true), + TRUE), /* Standard 8 pc-relative reloc. */ HOWTO (R_MN10300_PCREL8, 0, 0, 8, - true, + TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_PCREL8", - false, + FALSE, 0xff, 0xff, - true), + TRUE), - /* GNU extension to record C++ vtable hierarchy */ + /* 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 */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_MN10300_GNU_VTINHERIT", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + 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 */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_MN10300_GNU_VTENTRY", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Standard 24 bit reloc. */ HOWTO (R_MN10300_24, 0, 2, 24, - false, + FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_MN10300_24", - false, + FALSE, 0xffffff, 0xffffff, - false), + FALSE), + HOWTO (R_MN10300_GOTPC32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOTPC32", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOTPC16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOTPC16", /* name */ + FALSE, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOTOFF32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOTOFF32", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOTOFF24, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 24, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOTOFF24", /* name */ + FALSE, /* partial_inplace */ + 0xffffff, /* src_mask */ + 0xffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOTOFF16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOTOFF16", /* name */ + FALSE, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_PLT32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_PLT32", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + HOWTO (R_MN10300_PLT16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_PLT16", /* name */ + FALSE, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOT32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOT32", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOT24, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 24, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOT24", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_GOT16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GOT16", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_COPY, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_COPY", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_GLOB_DAT, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_GLOB_DAT", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_JMP_SLOT, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_JMP_SLOT", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_RELATIVE, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* */ + "R_MN10300_RELATIVE", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + EMPTY_HOWTO (24), + EMPTY_HOWTO (25), + EMPTY_HOWTO (26), + EMPTY_HOWTO (27), + EMPTY_HOWTO (28), + EMPTY_HOWTO (29), + EMPTY_HOWTO (30), + EMPTY_HOWTO (31), + EMPTY_HOWTO (32), + + HOWTO (R_MN10300_SYM_DIFF, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont,/* complain_on_overflow */ + NULL, /* special handler. */ + "R_MN10300_SYM_DIFF", /* name */ + FALSE, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_MN10300_ALIGN, /* type */ + 0, /* rightshift */ + 0, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont,/* complain_on_overflow */ + NULL, /* special handler. */ + "R_MN10300_ALIGN", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE) /* pcrel_offset */ }; -struct mn10300_reloc_map { +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[] = { +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, }, @@ -280,173 +504,641 @@ static const struct mn10300_reloc_map mn10300_reloc_map[] = { { BFD_RELOC_24, R_MN10300_24, }, { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, + { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, + { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, + { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, + { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, + { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, + { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, + { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, + { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, + { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, + { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, + { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, + { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, + { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, + { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, + { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF }, + { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN } }; -static reloc_howto_type * -bfd_elf32_bfd_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; +/* Create the GOT section. */ + +static bfd_boolean +_bfd_mn10300_elf_create_got_section (bfd * abfd, + struct bfd_link_info * info) { - unsigned int i; + flagword flags; + flagword pltflags; + asection * s; + struct elf_link_hash_entry * h; + const struct elf_backend_data * bed = get_elf_backend_data (abfd); + int ptralign; + + /* This function may be called more than once. */ + if (bfd_get_section_by_name (abfd, ".got") != NULL) + return TRUE; + + switch (bed->s->arch_size) + { + case 32: + ptralign = 2; + break; + + case 64: + ptralign = 3; + break; + + default: + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED); - for (i = 0; - i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map); - i++) + pltflags = flags; + pltflags |= SEC_CODE; + if (bed->plt_not_loaded) + pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); + if (bed->plt_readonly) + pltflags |= SEC_READONLY; + + s = bfd_make_section_with_flags (abfd, ".plt", pltflags); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) + return FALSE; + + /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the + .plt section. */ + if (bed->want_plt_sym) + { + h = _bfd_elf_define_linkage_sym (abfd, info, s, + "_PROCEDURE_LINKAGE_TABLE_"); + elf_hash_table (info)->hplt = h; + if (h == NULL) + return FALSE; + } + + s = bfd_make_section_with_flags (abfd, ".got", flags); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, ptralign)) + return FALSE; + + if (bed->want_got_plt) { - if (mn10300_reloc_map[i].bfd_reloc_val == code) - return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; + s = bfd_make_section_with_flags (abfd, ".got.plt", flags); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, ptralign)) + return FALSE; } + /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got + (or .got.plt) section. We don't do this in the linker script + because we don't want to define the symbol if we are not creating + a global offset table. */ + h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); + elf_hash_table (info)->hgot = h; + if (h == NULL) + return FALSE; + + /* The first bit of the global offset table is the header. */ + s->size += bed->got_header_size; + + return TRUE; +} + +static reloc_howto_type * +bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) +{ + unsigned int i; + + for (i = ARRAY_SIZE (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; +} + +static reloc_howto_type * +bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, + const char *r_name) +{ + unsigned int i; + + for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;) + if (elf_mn10300_howto_table[i].name != NULL + && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0) + return elf_mn10300_howto_table + i; + return NULL; } /* Set the howto pointer for an MN10300 ELF reloc. */ static void -mn10300_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr; - Elf32_Internal_Rela *dst; +mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, + arelent *cache_ptr, + Elf_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]; + 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; +static bfd_boolean +mn10300_elf_check_relocs (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) { + bfd_boolean sym_diff_reloc_seen; Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; + Elf_Internal_Sym * isymbuf = NULL; + struct elf_link_hash_entry **sym_hashes; const Elf_Internal_Rela *rel; const Elf_Internal_Rela *rel_end; + bfd * dynobj; + bfd_vma * local_got_offsets; + asection * sgot; + asection * srelgot; + asection * sreloc; + bfd_boolean result = FALSE; + + sgot = NULL; + srelgot = NULL; + sreloc = NULL; - if (info->relocateable) - return true; + if (info->relocatable) + return TRUE; symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; 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; + dynobj = elf_hash_table (info)->dynobj; + local_got_offsets = elf_local_got_offsets (abfd); rel_end = relocs + sec->reloc_count; + sym_diff_reloc_seen = FALSE; + for (rel = relocs; rel < rel_end; rel++) { struct elf_link_hash_entry *h; unsigned long r_symndx; + unsigned int r_type; 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]; + { + 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; + } + + r_type = ELF32_R_TYPE (rel->r_info); + + /* Some relocs require a global offset table. */ + if (dynobj == NULL) + { + switch (r_type) + { + case R_MN10300_GOT32: + case R_MN10300_GOT24: + case R_MN10300_GOT16: + case R_MN10300_GOTOFF32: + case R_MN10300_GOTOFF24: + case R_MN10300_GOTOFF16: + case R_MN10300_GOTPC32: + case R_MN10300_GOTPC16: + elf_hash_table (info)->dynobj = dynobj = abfd; + if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) + goto fail; + break; + + default: + break; + } + } - switch (ELF32_R_TYPE (rel->r_info)) + switch (r_type) { /* 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; + if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + goto fail; 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; + BFD_ASSERT (h != NULL); + if (h != NULL + && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + goto fail; + break; + + case R_MN10300_GOT32: + case R_MN10300_GOT24: + case R_MN10300_GOT16: + /* This symbol requires a global offset table entry. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + if (srelgot == NULL + && (h != NULL || info->shared)) + { + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + if (srelgot == NULL) + { + srelgot = bfd_make_section_with_flags (dynobj, + ".rela.got", + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)); + if (srelgot == NULL + || ! bfd_set_section_alignment (dynobj, srelgot, 2)) + goto fail; + } + } + + if (h != NULL) + { + if (h->got.offset != (bfd_vma) -1) + /* We have already allocated space in the .got. */ + break; + + h->got.offset = sgot->size; + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + goto fail; + } + + srelgot->size += sizeof (Elf32_External_Rela); + } + else + { + /* This is a global offset table entry for a local + symbol. */ + if (local_got_offsets == NULL) + { + size_t size; + unsigned int i; + + size = symtab_hdr->sh_info * sizeof (bfd_vma); + local_got_offsets = bfd_alloc (abfd, size); + + if (local_got_offsets == NULL) + goto fail; + + elf_local_got_offsets (abfd) = local_got_offsets; + + for (i = 0; i < symtab_hdr->sh_info; i++) + local_got_offsets[i] = (bfd_vma) -1; + } + + if (local_got_offsets[r_symndx] != (bfd_vma) -1) + /* We have already allocated space in the .got. */ + break; + + local_got_offsets[r_symndx] = sgot->size; + + if (info->shared) + /* If we are generating a shared object, we need to + output a R_MN10300_RELATIVE reloc so that the dynamic + linker can adjust this GOT entry. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + + sgot->size += 4; + break; + + case R_MN10300_PLT32: + case R_MN10300_PLT16: + /* This symbol requires a procedure linkage table entry. We + actually build the entry in adjust_dynamic_symbol, + because this might be a case of linking PIC code which is + never referenced by a dynamic object, in which case we + don't need to generate a procedure linkage table entry + after all. */ + + /* If this is a local symbol, we resolve it directly without + creating a procedure linkage table entry. */ + if (h == NULL) + continue; + + if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL + || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) + break; + + h->needs_plt = 1; + break; + + case R_MN10300_24: + case R_MN10300_16: + case R_MN10300_8: + case R_MN10300_PCREL32: + case R_MN10300_PCREL16: + case R_MN10300_PCREL8: + if (h != NULL) + h->non_got_ref = 1; + break; + + case R_MN10300_SYM_DIFF: + sym_diff_reloc_seen = TRUE; + break; + + case R_MN10300_32: + if (h != NULL) + h->non_got_ref = 1; + + /* If we are creating a shared library, then we + need to copy the reloc into the shared library. */ + if (info->shared + && (sec->flags & SEC_ALLOC) != 0 + /* Do not generate a dynamic reloc for a + reloc associated with a SYM_DIFF operation. */ + && ! sym_diff_reloc_seen) + { + asection * sym_section = NULL; + + /* Find the section containing the + symbol involved in the relocation. */ + if (h == NULL) + { + Elf_Internal_Sym * isym; + + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf) + { + isym = isymbuf + r_symndx; + /* All we care about is whether this local symbol is absolute. */ + if (isym->st_shndx == SHN_ABS) + sym_section = bfd_abs_section_ptr; + } + } + else + { + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + sym_section = h->root.u.def.section; + } + + /* If the symbol is absolute then the relocation can + be resolved during linking and there is no need for + a dynamic reloc. */ + if (sym_section != bfd_abs_section_ptr) + { + /* When creating a shared object, we must copy these + reloc types into the output file. We create a reloc + section in dynobj and make room for this reloc. */ + if (sreloc == NULL) + { + sreloc = _bfd_elf_make_dynamic_reloc_section + (sec, dynobj, 2, abfd, /*rela?*/ TRUE); + if (sreloc == NULL) + goto fail; + } + + sreloc->size += sizeof (Elf32_External_Rela); + } + } + break; } + + if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF) + sym_diff_reloc_seen = FALSE; } - return true; + result = TRUE; + fail: + if (isymbuf != NULL) + free (isymbuf); + + return result; } /* 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 ATTRIBUTE_UNUSED; - Elf_Internal_Rela *rel; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; +mn10300_elf_gc_mark_hook (asection *sec, + 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; + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_MN10300_GNU_VTINHERIT: + case R_MN10300_GNU_VTENTRY: + return NULL; + } + + return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); +} - default: - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; +/* Perform a relocation as part of a final link. */ - case bfd_link_hash_common: - return h->root.u.c.p->section; +static bfd_reloc_status_type +mn10300_elf_final_link_relocate (reloc_howto_type *howto, + bfd *input_bfd, + bfd *output_bfd ATTRIBUTE_UNUSED, + asection *input_section, + bfd_byte *contents, + bfd_vma offset, + bfd_vma value, + bfd_vma addend, + struct elf_link_hash_entry * h, + unsigned long symndx, + struct bfd_link_info *info, + asection *sym_sec ATTRIBUTE_UNUSED, + int is_local ATTRIBUTE_UNUSED) +{ + static asection * sym_diff_section; + static bfd_vma sym_diff_value; + bfd_boolean is_sym_diff_reloc; + unsigned long r_type = howto->type; + bfd_byte * hit_data = contents + offset; + bfd * dynobj; + bfd_vma * local_got_offsets; + asection * sgot; + asection * splt; + asection * sreloc; - default: - break; - } - } + dynobj = elf_hash_table (info)->dynobj; + local_got_offsets = elf_local_got_offsets (input_bfd); + + sgot = NULL; + splt = NULL; + sreloc = NULL; + + switch (r_type) + { + case R_MN10300_24: + case R_MN10300_16: + case R_MN10300_8: + case R_MN10300_PCREL8: + case R_MN10300_PCREL16: + case R_MN10300_PCREL32: + case R_MN10300_GOTOFF32: + case R_MN10300_GOTOFF24: + case R_MN10300_GOTOFF16: + if (info->shared + && (input_section->flags & SEC_ALLOC) != 0 + && h != NULL + && ! SYMBOL_REFERENCES_LOCAL (info, h)) + return bfd_reloc_dangerous; } - else + + is_sym_diff_reloc = FALSE; + if (sym_diff_section != NULL) { - 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)) + BFD_ASSERT (sym_diff_section == input_section); + + switch (r_type) { - return bfd_section_from_elf_index (abfd, sym->st_shndx); + case R_MN10300_32: + case R_MN10300_24: + case R_MN10300_16: + case R_MN10300_8: + value -= sym_diff_value; + /* If we are computing a 32-bit value for the location lists + and the result is 0 then we add one to the value. A zero + value can result because of linker relaxation deleteing + prologue instructions and using a value of 1 (for the begin + and end offsets in the location list entry) results in a + nul entry which does not prevent the following entries from + being parsed. */ + if (r_type == R_MN10300_32 + && value == 0 + && strcmp (input_section->name, ".debug_loc") == 0) + value = 1; + sym_diff_section = NULL; + is_sym_diff_reloc = TRUE; + break; + + default: + sym_diff_section = NULL; + break; } } - 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 ATTRIBUTE_UNUSED; - asection *input_section; - bfd_byte *contents; - bfd_vma offset; - bfd_vma value; - bfd_vma addend; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - asection *sym_sec ATTRIBUTE_UNUSED; - int is_local ATTRIBUTE_UNUSED; -{ - unsigned long r_type = howto->type; - bfd_byte *hit_data = contents + offset; - switch (r_type) { + case R_MN10300_SYM_DIFF: + BFD_ASSERT (addend == 0); + /* Cache the input section and value. + The offset is unreliable, since relaxation may + have reduced the following reloc's offset. */ + sym_diff_section = input_section; + sym_diff_value = value; + return bfd_reloc_ok; + + case R_MN10300_ALIGN: case R_MN10300_NONE: return bfd_reloc_ok; case R_MN10300_32: + if (info->shared + /* Do not generate relocs when an R_MN10300_32 has been used + with an R_MN10300_SYM_DIFF to compute a difference of two + symbols. */ + && is_sym_diff_reloc == FALSE + /* Also, do not generate a reloc when the symbol associated + with the R_MN10300_32 reloc is absolute - there is no + need for a run time computation in this case. */ + && sym_sec != bfd_abs_section_ptr + /* If the section is not going to be allocated at load time + then there is no need to generate relocs for it. */ + && (input_section->flags & SEC_ALLOC) != 0) + { + Elf_Internal_Rela outrel; + bfd_boolean skip, relocate; + + /* When generating a shared object, these relocations are + copied into the output file to be resolved at run + time. */ + if (sreloc == NULL) + { + sreloc = _bfd_elf_get_dynamic_reloc_section + (input_bfd, input_section, /*rela?*/ TRUE); + if (sreloc == NULL) + return FALSE; + } + + skip = FALSE; + + outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, + input_section, offset); + if (outrel.r_offset == (bfd_vma) -1) + skip = TRUE; + + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + if (skip) + { + memset (&outrel, 0, sizeof outrel); + relocate = FALSE; + } + else + { + /* h->dynindx may be -1 if this symbol was marked to + become local. */ + if (h == NULL + || SYMBOL_REFERENCES_LOCAL (info, h)) + { + relocate = TRUE; + outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); + outrel.r_addend = value + addend; + } + else + { + BFD_ASSERT (h->dynindx != -1); + relocate = FALSE; + outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); + outrel.r_addend = value + addend; + } + } + + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) + + sreloc->reloc_count)); + ++sreloc->reloc_count; + + /* If this reloc is against an external symbol, we do + not want to fiddle with the addend. Otherwise, we + need to include the symbol value so that it becomes + an addend for the dynamic reloc. */ + if (! relocate) + return bfd_reloc_ok; + } value += addend; bfd_put_32 (input_bfd, value, hit_data); return bfd_reloc_ok; @@ -486,7 +1178,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, value -= offset; value += addend; - if ((long) value > 0xff || (long) value < -0x100) + if ((long) value > 0x7f || (long) value < -0x80) return bfd_reloc_overflow; bfd_put_8 (input_bfd, value, hit_data); @@ -498,7 +1190,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, value -= offset; value += addend; - if ((long) value > 0xffff || (long) value < -0x10000) + if ((long) value > 0x7fff || (long) value < -0x8000) return bfd_reloc_overflow; bfd_put_16 (input_bfd, value, hit_data); @@ -517,74 +1209,250 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, 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)); + case R_MN10300_GOTPC32: + /* Use global offset table as symbol value. */ + value = bfd_get_section_by_name (dynobj, + ".got")->output_section->vma; + value -= (input_section->output_section->vma + + input_section->output_offset); + value -= offset; + value += addend; - 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; + bfd_put_32 (input_bfd, value, hit_data); + return bfd_reloc_ok; - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - howto = elf_mn10300_howto_table + r_type; + case R_MN10300_GOTPC16: + /* Use global offset table as symbol value. */ + value = bfd_get_section_by_name (dynobj, + ".got")->output_section->vma; + value -= (input_section->output_section->vma + + input_section->output_offset); + value -= offset; + value += addend; - /* Just skip the vtable gc relocs. */ - if (r_type == R_MN10300_GNU_VTINHERIT - || r_type == R_MN10300_GNU_VTENTRY) - continue; + 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_GOTOFF32: + value -= bfd_get_section_by_name (dynobj, + ".got")->output_section->vma; + value += addend; + + bfd_put_32 (input_bfd, value, hit_data); + return bfd_reloc_ok; + + case R_MN10300_GOTOFF24: + value -= bfd_get_section_by_name (dynobj, + ".got")->output_section->vma; + value += addend; + + if ((long) value > 0x7fffff || (long) value < -0x800000) + return bfd_reloc_overflow; + + bfd_put_8 (input_bfd, value, 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_GOTOFF16: + value -= bfd_get_section_by_name (dynobj, + ".got")->output_section->vma; + 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_PLT32: + if (h != NULL + && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL + && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN + && h->plt.offset != (bfd_vma) -1) + { + asection * splt; + + splt = bfd_get_section_by_name (dynobj, ".plt"); + + value = (splt->output_section->vma + + splt->output_offset + + h->plt.offset) - value; + } + + 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; - if (info->relocateable) + case R_MN10300_PLT16: + if (h != NULL + && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL + && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN + && h->plt.offset != (bfd_vma) -1) { - /* 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) + asection * splt; + + splt = bfd_get_section_by_name (dynobj, ".plt"); + + value = (splt->output_section->vma + + splt->output_offset + + h->plt.offset) - value; + } + + value -= (input_section->output_section->vma + + input_section->output_offset); + value -= offset; + 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_GOT32: + case R_MN10300_GOT24: + case R_MN10300_GOT16: + { + asection * sgot; + + sgot = bfd_get_section_by_name (dynobj, ".got"); + + if (h != NULL) { - sym = local_syms + r_symndx; - if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + bfd_vma off; + + off = h->got.offset; + BFD_ASSERT (off != (bfd_vma) -1); + + if (! elf_hash_table (info)->dynamic_sections_created + || SYMBOL_REFERENCES_LOCAL (info, h)) + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file. We must initialize + this entry in the global offset table. + + When doing a dynamic link, we create a .rela.got + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + bfd_put_32 (output_bfd, value, + sgot->contents + off); + + value = sgot->output_offset + off; + } + else + { + bfd_vma off; + + off = elf_local_got_offsets (input_bfd)[symndx]; + + bfd_put_32 (output_bfd, value, sgot->contents + off); + + if (info->shared) { - sec = local_sections[r_symndx]; - rel->r_addend += sec->output_offset + sym->st_value; + asection * srelgot; + Elf_Internal_Rela outrel; + + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); + outrel.r_addend = value; + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + (bfd_byte *) (((Elf32_External_Rela *) + srelgot->contents) + + srelgot->reloc_count)); + ++ srelgot->reloc_count; } + + value = sgot->output_offset + off; } + } - continue; + value += addend; + + if (r_type == R_MN10300_GOT32) + { + bfd_put_32 (input_bfd, value, hit_data); + return bfd_reloc_ok; } + else if (r_type == R_MN10300_GOT24) + { + 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; + } + else if (r_type == R_MN10300_GOT16) + { + if ((long) value > 0x7fff || (long) value < -0x8000) + return bfd_reloc_overflow; + + bfd_put_16 (input_bfd, value, hit_data); + return bfd_reloc_ok; + } + /* Fall through. */ + + default: + return bfd_reloc_notsupported; + } +} + +/* Relocate an MN10300 ELF section. */ + +static bfd_boolean +mn10300_elf_relocate_section (bfd *output_bfd, + struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + bfd_byte *contents, + Elf_Internal_Rela *relocs, + Elf_Internal_Sym *local_syms, + asection **local_sections) +{ + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + Elf_Internal_Rela *rel, *relend; + + 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 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; - /* This is a final link. */ h = NULL; sym = NULL; sec = NULL; @@ -592,46 +1460,89 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, { sym = local_syms + r_symndx; sec = local_sections[r_symndx]; - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); } else { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.root.type == bfd_link_hash_indirect - || h->root.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 + bfd_boolean unresolved_reloc; + bfd_boolean warned; + struct elf_link_hash_entry *hh; + + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + hh, sec, relocation, + unresolved_reloc, warned); + + h = (struct elf32_mn10300_link_hash_entry *) hh; + + 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) + && ( r_type == R_MN10300_GOTPC32 + || r_type == R_MN10300_GOTPC16 + || (( r_type == R_MN10300_PLT32 + || r_type == R_MN10300_PLT16) + && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL + && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN + && h->root.plt.offset != (bfd_vma) -1) + || (( r_type == R_MN10300_GOT32 + || r_type == R_MN10300_GOT24 + || r_type == R_MN10300_GOT16) + && elf_hash_table (info)->dynamic_sections_created + && !SYMBOL_REFERENCES_LOCAL (info, hh)) + || (r_type == R_MN10300_32 + /* _32 relocs in executables force _COPY relocs, + such that the address of the symbol ends up + being local. */ + && !info->executable + && !SYMBOL_REFERENCES_LOCAL (info, hh) + && ((input_section->flags & SEC_ALLOC) != 0 + /* DWARF will emit R_MN10300_32 relocations + in its sections against symbols defined + externally in shared libraries. We can't + do anything with them here. */ + || ((input_section->flags & SEC_DEBUGGING) != 0 + && h->root.def_dynamic))))) + /* In these cases, we don't need the relocation + value. We check specially because in some + obscure cases sec->output_section will be NULL. */ relocation = 0; - else - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.root.string, input_bfd, - input_section, rel->r_offset, true))) - return false; - relocation = 0; - } + + else if (!info->relocatable && unresolved_reloc) + (*_bfd_error_handler) + (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), + input_bfd, + input_section, + (long) rel->r_offset, + howto->name, + h->root.root.root.string); + } + + if (sec != NULL && elf_discarded_section (sec)) + { + /* For relocs against symbols from removed linkonce sections, + or sections discarded by a linker script, we just want the + section contents zeroed. Avoid any special processing. */ + _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); + rel->r_info = 0; + rel->r_addend = 0; + continue; } + if (info->relocatable) + continue; + r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, input_section, contents, rel->r_offset, relocation, rel->r_addend, + (struct elf_link_hash_entry *) h, + r_symndx, info, sec, h == NULL); if (r != bfd_reloc_ok) { const char *name; - const char *msg = (const char *) 0; + const char *msg = NULL; if (h != NULL) name = h->root.root.root.string; @@ -647,16 +1558,17 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, { 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; + (info, (h ? &h->root.root : NULL), name, + howto->name, (bfd_vma) 0, input_bfd, + input_section, rel->r_offset))) + return FALSE; break; case bfd_reloc_undefined: if (! ((*info->callbacks->undefined_symbol) (info, name, input_bfd, input_section, - rel->r_offset, true))) - return false; + rel->r_offset, TRUE))) + return FALSE; break; case bfd_reloc_outofrange: @@ -668,53 +1580,67 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, goto common_error; case bfd_reloc_dangerous: - msg = _("internal error: dangerous error"); + if (r_type == R_MN10300_PCREL32) + msg = _("error: inappropriate relocation type for shared" + " library (did you forget -fpic?)"); + else + msg = _("internal error: suspicious relocation type used" + " in shared library"); goto common_error; default: msg = _("internal error: unknown error"); - /* fall through */ + /* Fall through. */ common_error: if (!((*info->callbacks->warning) (info, msg, name, input_bfd, input_section, rel->r_offset))) - return false; + return FALSE; break; } } } - return true; + 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 ATTRIBUTE_UNUSED; + +static bfd_boolean +elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry, + void * in_args) { struct elf32_mn10300_link_hash_entry *entry; + struct bfd_link_info *link_info = (struct bfd_link_info *) in_args; unsigned int byte_count = 0; entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; + if (entry->root.root.type == bfd_link_hash_warning) + entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; + /* 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; + 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. */ + 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 a symbol is available for + dynamic symbol resolution (overridable or overriding), avoid + custom calling conventions. */ if (entry->direct_calls == 0 - || (entry->stack_size == 0 && entry->movm_args == 0)) + || (entry->stack_size == 0 && entry->movm_args == 0) + || (elf_hash_table (link_info)->dynamic_sections_created + && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL + && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) { /* 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; + return TRUE; } /* We may be able to move some instructions from the function itself into @@ -726,23 +1652,376 @@ elf32_mn10300_finish_hash_table_entry (gen_entry, in_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 (entry->stack_size > 0) + { + if (entry->stack_size <= 128) + byte_count += 3; + else + byte_count += 4; + } /* If using "call" will result in larger code, then turn all - the associated "call" instructions into "calls" instrutions. */ + the associated "call" instructions into "calls" instructions. */ if (byte_count < entry->direct_calls) entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; /* This routine never fails. */ - return true; + return TRUE; +} + +/* Used to count hash table entries. */ + +static bfd_boolean +elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, + void * in_args) +{ + int *count = (int *) in_args; + + (*count) ++; + return TRUE; +} + +/* Used to enumerate hash table entries into a linear array. */ + +static bfd_boolean +elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, + void * in_args) +{ + struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; + + **ptr = gen_entry; + (*ptr) ++; + return TRUE; +} + +/* Used to sort the array created by the above. */ + +static int +sort_by_value (const void *va, const void *vb) +{ + struct elf32_mn10300_link_hash_entry *a + = *(struct elf32_mn10300_link_hash_entry **) va; + struct elf32_mn10300_link_hash_entry *b + = *(struct elf32_mn10300_link_hash_entry **) vb; + + return a->value - b->value; +} + +/* 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 (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 ,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 function'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; + + if (bfd_get_mach (abfd) == bfd_mach_am33 + || bfd_get_mach (abfd) == bfd_mach_am33_2) + { + /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ + if (hash->movm_args & 0x1) + hash->movm_stack_size += 6 * 4; + + /* exreg1 space. e4, e5, e6, e7 */ + if (hash->movm_args & 0x2) + hash->movm_stack_size += 4 * 4; + + /* exreg0 space. e2, e3 */ + if (hash->movm_args & 0x4) + hash->movm_stack_size += 2 * 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; +} + +/* Delete some bytes from a section while relaxing. */ + +static bfd_boolean +mn10300_elf_relax_delete_bytes (bfd *abfd, + asection *sec, + bfd_vma addr, + int count) +{ + Elf_Internal_Shdr *symtab_hdr; + unsigned int sec_shndx; + bfd_byte *contents; + Elf_Internal_Rela *irel, *irelend; + Elf_Internal_Rela *irelalign; + bfd_vma toaddr; + Elf_Internal_Sym *isym, *isymend; + struct elf_link_hash_entry **sym_hashes; + struct elf_link_hash_entry **end_hashes; + unsigned int symcount; + + sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); + + contents = elf_section_data (sec)->this_hdr.contents; + + irelalign = NULL; + toaddr = sec->size; + + irel = elf_section_data (sec)->relocs; + irelend = irel + sec->reloc_count; + + if (sec->reloc_count > 0) + { + /* If there is an align reloc at the end of the section ignore it. + GAS creates these relocs for reasons of its own, and they just + serve to keep the section artifically inflated. */ + if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN) + --irelend; + + /* The deletion must stop at the next ALIGN reloc for an aligment + power larger than, or not a multiple of, the number of bytes we + are deleting. */ + for (; irel < irelend; irel++) + { + int alignment = 1 << irel->r_addend; + + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN + && irel->r_offset > addr + && irel->r_offset < toaddr + && (count < alignment + || alignment % count != 0)) + { + irelalign = irel; + toaddr = irel->r_offset; + break; + } + } + } + + /* Actually delete the bytes. */ + memmove (contents + addr, contents + addr + count, + (size_t) (toaddr - addr - count)); + + /* Adjust the section's size if we are shrinking it, or else + pad the bytes between the end of the shrunken region and + the start of the next region with NOP codes. */ + if (irelalign == NULL) + { + sec->size -= count; + /* Include symbols at the end of the section, but + not at the end of a sub-region of the section. */ + toaddr ++; + } + else + { + int i; + +#define NOP_OPCODE 0xcb + + for (i = 0; i < count; i ++) + bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); + } + + /* 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) + || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN + && irel->r_offset == toaddr)) + irel->r_offset -= count; + } + + /* Adjust the local symbols in the section, reducing their value + by the number of bytes deleted. Note - symbols within the deleted + region are moved to the address of the start of the region, which + actually means that they will address the byte beyond the end of + the region once the deletion has been completed. */ + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + isym = (Elf_Internal_Sym *) symtab_hdr->contents; + for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) + { + if (isym->st_shndx == sec_shndx + && isym->st_value > addr + && isym->st_value < toaddr) + { + if (isym->st_value < addr + count) + isym->st_value = addr; + else + isym->st_value -= count; + } + /* Adjust the function symbol's size as well. */ + else if (isym->st_shndx == sec_shndx + && ELF_ST_TYPE (isym->st_info) == STT_FUNC + && isym->st_value + isym->st_size > addr + && isym->st_value + isym->st_size < toaddr) + isym->st_size -= count; + } + + /* Now adjust the global symbols defined in this section. */ + symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) + - symtab_hdr->sh_info); + sym_hashes = elf_sym_hashes (abfd); + end_hashes = sym_hashes + symcount; + for (; sym_hashes < end_hashes; sym_hashes++) + { + struct elf_link_hash_entry *sym_hash = *sym_hashes; + + if ((sym_hash->root.type == bfd_link_hash_defined + || sym_hash->root.type == bfd_link_hash_defweak) + && sym_hash->root.u.def.section == sec + && sym_hash->root.u.def.value > addr + && sym_hash->root.u.def.value < toaddr) + { + if (sym_hash->root.u.def.value < addr + count) + sym_hash->root.u.def.value = addr; + else + sym_hash->root.u.def.value -= count; + } + /* Adjust the function symbol's size as well. */ + else if (sym_hash->root.type == bfd_link_hash_defined + && sym_hash->root.u.def.section == sec + && sym_hash->type == STT_FUNC + && sym_hash->root.u.def.value + sym_hash->size > addr + && sym_hash->root.u.def.value + sym_hash->size < toaddr) + sym_hash->size -= count; + } + + /* See if we can move the ALIGN reloc forward. + We have adjusted r_offset for it already. */ + if (irelalign != NULL) + { + bfd_vma alignto, alignaddr; + + if ((int) irelalign->r_addend > 0) + { + /* This is the old address. */ + alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); + /* This is where the align points to now. */ + alignaddr = BFD_ALIGN (irelalign->r_offset, + 1 << irelalign->r_addend); + if (alignaddr < alignto) + /* Tail recursion. */ + return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr, + (int) (alignto - alignaddr)); + } + } + + return TRUE; +} + +/* Return TRUE if a symbol exists at the given address, else return + FALSE. */ + +static bfd_boolean +mn10300_elf_symbol_address_p (bfd *abfd, + asection *sec, + Elf_Internal_Sym *isym, + bfd_vma addr) +{ + Elf_Internal_Shdr *symtab_hdr; + unsigned int sec_shndx; + Elf_Internal_Sym *isymend; + struct elf_link_hash_entry **sym_hashes; + struct elf_link_hash_entry **end_hashes; + unsigned int symcount; + + sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); + + /* Examine all the symbols. */ + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) + if (isym->st_shndx == sec_shndx + && isym->st_value == addr) + return TRUE; + + symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) + - symtab_hdr->sh_info); + sym_hashes = elf_sym_hashes (abfd); + end_hashes = sym_hashes + symcount; + for (; sym_hashes < end_hashes; sym_hashes++) + { + struct elf_link_hash_entry *sym_hash = *sym_hashes; + + if ((sym_hash->root.type == bfd_link_hash_defined + || sym_hash->root.type == bfd_link_hash_defweak) + && sym_hash->root.u.def.section == sec + && sym_hash->root.u.def.value == addr) + return TRUE; + } + + return FALSE; } /* This function handles relaxing for the mn10300. - There's quite a few relaxing opportunites available on the mn10300: + There are quite a few relaxing opportunities available on the mn10300: * calls:32 -> calls:16 2 bytes * call:32 -> call:16 2 bytes @@ -779,25 +2058,23 @@ elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) 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; +static bfd_boolean +mn10300_elf_relax_section (bfd *abfd, + asection *sec, + struct bfd_link_info *link_info, + bfd_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; + Elf_Internal_Sym *isymbuf = NULL; struct elf32_mn10300_link_hash_table *hash_table; + asection *section = sec; + bfd_vma align_gap_adjustment; /* Assume nothing changes. */ - *again = false; + *again = FALSE; /* We need a pointer to the mn10300 specific hash table. */ hash_table = elf32_mn10300_hash_table (link_info); @@ -812,25 +2089,16 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) 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 + if (symtab_hdr->sh_info != 0) { - /* 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)) + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf == NULL) goto error_return; } @@ -845,42 +2113,36 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) const char *sym_name; char *new_name; + /* If there's nothing to do in this section, skip it. */ + if (! ((section->flags & SEC_RELOC) != 0 + && section->reloc_count != 0)) + continue; + if ((section->flags & SEC_ALLOC) == 0) + continue; + /* 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) + else if (section->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)) + if (!bfd_malloc_and_get_section (input_bfd, section, + &contents)) goto error_return; } else - { - contents = NULL; - free_contents = NULL; - } + 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)); + internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, + NULL, 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; @@ -906,47 +2168,47 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (r_index < symtab_hdr->sh_info) { /* A local symbol. */ - Elf_Internal_Sym isym; + Elf_Internal_Sym *isym; + struct elf_link_hash_table *elftab; + bfd_size_type amt; - bfd_elf32_swap_symbol_in (input_bfd, - extsyms + r_index, &isym); - - if (isym.st_shndx == SHN_UNDEF) + isym = isymbuf + r_index; + 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) + else if (isym->st_shndx == SHN_ABS) sym_sec = bfd_abs_section_ptr; - else if (isym.st_shndx == SHN_COMMON) + else if (isym->st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; + else + sym_sec + = bfd_section_from_elf_index (input_bfd, + isym->st_shndx); - sym_name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - isym.st_name); + 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) + if (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) + amt = strlen (sym_name) + 10; + new_name = bfd_malloc (amt); + if (new_name == NULL) goto error_return; - sprintf (new_name, "%s_%08x", - sym_name, (int) sym_sec); + sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); 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); + elftab = &hash_table->static_hash_table->root; + hash = ((struct elf32_mn10300_link_hash_entry *) + elf_link_hash_lookup (elftab, sym_name, + TRUE, TRUE, FALSE)); free (new_name); } else @@ -956,17 +2218,24 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) 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; + sym_name = hash->root.root.root.string; + if ((section->flags & SEC_CODE) != 0) + { + /* 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 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_PLT32 + || r_type == R_MN10300_PLT16 || r_type == R_MN10300_PCREL16) hash->direct_calls++; else @@ -979,76 +2248,90 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) (ie movm_args). */ if ((section->flags & SEC_CODE) != 0) { + Elf_Internal_Sym *isym, *isymend; + unsigned int sec_shndx; + struct elf_link_hash_entry **hashes; + struct elf_link_hash_entry **end_hashes; + unsigned int symcount; - Elf32_External_Sym *esym, *esymend; - int idx, shndx; + sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, + section); - shndx = _bfd_elf_section_from_bfd_section (input_bfd, - section); + symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) + - symtab_hdr->sh_info); + hashes = elf_sym_hashes (input_bfd); + end_hashes = hashes + symcount; /* 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++) + isymend = isymbuf + symtab_hdr->sh_info; + for (isym = isymbuf; isym < isymend; isym++) { - 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 == sec_shndx + && ELF_ST_TYPE (isym->st_info) == STT_FUNC) { - if (isym.st_shndx == SHN_UNDEF) + struct elf_link_hash_table *elftab; + bfd_size_type amt; + struct elf_link_hash_entry **lhashes = hashes; + + /* Skip a local symbol if it aliases a + global one. */ + for (; lhashes < end_hashes; lhashes++) + { + hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; + if ((hash->root.root.type == bfd_link_hash_defined + || hash->root.root.type == bfd_link_hash_defweak) + && hash->root.root.u.def.section == section + && hash->root.type == STT_FUNC + && hash->root.root.u.def.value == isym->st_value) + break; + } + if (lhashes != end_hashes) + 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) + else if (isym->st_shndx == SHN_ABS) sym_sec = bfd_abs_section_ptr; - else if (isym.st_shndx == SHN_COMMON) + else if (isym->st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; + else + sym_sec + = bfd_section_from_elf_index (input_bfd, + isym->st_shndx); - sym_name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - isym.st_name); + 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) + amt = strlen (sym_name) + 10; + new_name = bfd_malloc (amt); + if (new_name == NULL) goto error_return; - sprintf (new_name, "%s_%08x", - sym_name, (int) sym_sec); + sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); 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); + elftab = &hash_table->static_hash_table->root; + hash = ((struct elf32_mn10300_link_hash_entry *) + elf_link_hash_lookup (elftab, sym_name, + TRUE, TRUE, FALSE)); free (new_name); compute_function_info (input_bfd, hash, - isym.st_value, contents); + isym->st_value, contents); + hash->value = isym->st_value; } } - esym = extsyms + symtab_hdr->sh_info; - esymend = extsyms + (symtab_hdr->sh_size - / sizeof (Elf32_External_Sym)); - for (idx = 0; esym < esymend; esym++, idx++) + for (; hashes < end_hashes; hashes++) { - 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)) + hash = (struct elf32_mn10300_link_hash_entry *) *hashes; + if ((hash->root.root.type == bfd_link_hash_defined + || hash->root.root.type == bfd_link_hash_defweak) + && hash->root.root.u.def.section == section + && hash->root.type == STT_FUNC) compute_function_info (input_bfd, hash, (hash)->root.root.u.def.value, contents); @@ -1056,48 +2339,89 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) } /* Cache or free any memory we allocated for the relocs. */ - if (free_relocs != NULL) - { - free (free_relocs); - free_relocs = NULL; - } + if (internal_relocs != NULL + && elf_section_data (section)->relocs != internal_relocs) + free (internal_relocs); + internal_relocs = NULL; /* Cache or free any memory we allocated for the contents. */ - if (free_contents != NULL) + if (contents != NULL + && elf_section_data (section)->this_hdr.contents != contents) { if (! link_info->keep_memory) - free (free_contents); + free (contents); else { /* Cache the section contents for elf_link_input_bfd. */ elf_section_data (section)->this_hdr.contents = contents; } - free_contents = NULL; } + contents = NULL; } /* Cache or free any memory we allocated for the symbols. */ - if (free_extsyms != NULL) + if (isymbuf != NULL + && symtab_hdr->contents != (unsigned char *) isymbuf) { if (! link_info->keep_memory) - free (free_extsyms); + free (isymbuf); else { /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = extsyms; + symtab_hdr->contents = (unsigned char *) isymbuf; } - free_extsyms = NULL; } + isymbuf = 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); + link_info); elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, elf32_mn10300_finish_hash_table_entry, - NULL); + link_info); + + { + /* This section of code collects all our local symbols, sorts + them by value, and looks for multiple symbols referring to + the same address. For those symbols, the flags are merged. + At this point, the only flag that can be set is + MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags + together. */ + int static_count = 0, i; + struct elf32_mn10300_link_hash_entry **entries; + struct elf32_mn10300_link_hash_entry **ptr; + + elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, + elf32_mn10300_count_hash_table_entries, + &static_count); + + entries = bfd_malloc (static_count * sizeof (* ptr)); + + ptr = entries; + elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, + elf32_mn10300_list_hash_table_entries, + & ptr); + + qsort (entries, static_count, sizeof (entries[0]), sort_by_value); + + for (i = 0; i < static_count - 1; i++) + if (entries[i]->value && entries[i]->value == entries[i+1]->value) + { + int v = entries[i]->flags; + int j; + + for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++) + v |= entries[j]->flags; + + for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++) + entries[j]->flags = v; + + i = j - 1; + } + } /* All entries in the hash table are fully initialized. */ hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; @@ -1110,25 +2434,16 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) input_bfd != NULL; input_bfd = input_bfd->link_next) { - asection *section; - - /* We're going to need all the symbols for each bfd. */ + /* We're going to need all the local 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 + if (symtab_hdr->sh_info != 0) { - /* 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)) + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf == NULL) goto error_return; } @@ -1137,25 +2452,24 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) section != NULL; section = section->next) { - int shndx; - Elf32_External_Sym *esym, *esymend; - int idx; + unsigned int sec_shndx; + Elf_Internal_Sym *isym, *isymend; + struct elf_link_hash_entry **hashes; + struct elf_link_hash_entry **end_hashes; + unsigned int symcount; /* Skip non-code sections and empty sections. */ - if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0) + if ((section->flags & SEC_CODE) == 0 || section->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)); + internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, + NULL, 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. */ @@ -1164,93 +2478,83 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) 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)) + if (!bfd_malloc_and_get_section (input_bfd, section, + &contents)) goto error_return; } - shndx = _bfd_elf_section_from_bfd_section (input_bfd, section); + sec_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++) + isymend = isymbuf + symtab_hdr->sh_info; + for (isym = isymbuf; isym < isymend; isym++) { - Elf_Internal_Sym isym; struct elf32_mn10300_link_hash_entry *sym_hash; asection *sym_sec = NULL; const char *sym_name; char *new_name; + struct elf_link_hash_table *elftab; + bfd_size_type amt; - bfd_elf32_swap_symbol_in (input_bfd, esym, &isym); - - if (isym.st_shndx != shndx) + if (isym->st_shndx != sec_shndx) continue; - if (isym.st_shndx == SHN_UNDEF) + 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) + else if (isym->st_shndx == SHN_ABS) sym_sec = bfd_abs_section_ptr; - else if (isym.st_shndx == SHN_COMMON) + else if (isym->st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; else - abort (); + sym_sec + = bfd_section_from_elf_index (input_bfd, isym->st_shndx); - sym_name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - isym.st_name); + 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) + amt = strlen (sym_name) + 10; + new_name = bfd_malloc (amt); + if (new_name == NULL) goto error_return; - sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); + sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); sym_name = new_name; + elftab = & hash_table->static_hash_table->root; sym_hash = (struct elf32_mn10300_link_hash_entry *) - elf_link_hash_lookup (&hash_table->static_hash_table->root, - sym_name, false, - false, false); + elf_link_hash_lookup (elftab, 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)) + 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* 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; + if (sym_hash->stack_size > 0) + { + if (sym_hash->stack_size <= 128) + bytes += 3; + else + bytes += 4; + } /* Note that we've deleted prologue bytes for this function. */ @@ -1259,147 +2563,162 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Actually delete the bytes. */ if (!mn10300_elf_relax_delete_bytes (input_bfd, section, - isym.st_value, + isym->st_value, bytes)) goto error_return; /* Something changed. Not strictly necessary, but may lead to more relaxing opportunities. */ - *again = true; + *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++) + symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) + - symtab_hdr->sh_info); + hashes = elf_sym_hashes (input_bfd); + end_hashes = hashes + symcount; + for (; hashes < end_hashes; hashes++) { - 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)) + sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; + 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 == section + && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) + && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) { int bytes = 0; + bfd_vma symval; /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* 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; + if (sym_hash->stack_size > 0) + { + if (sym_hash->stack_size <= 128) + bytes += 3; + else + bytes += 4; + } /* Note that we've deleted prologue bytes for this function. */ sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; /* Actually delete the bytes. */ + symval = sym_hash->root.root.u.def.value; if (!mn10300_elf_relax_delete_bytes (input_bfd, section, - (sym_hash)->root.root.u.def.value, + symval, bytes)) goto error_return; /* Something changed. Not strictly necessary, but may lead to more relaxing opportunities. */ - *again = true; + *again = TRUE; } } /* Cache or free any memory we allocated for the relocs. */ - if (free_relocs != NULL) - { - free (free_relocs); - free_relocs = NULL; - } + if (internal_relocs != NULL + && elf_section_data (section)->relocs != internal_relocs) + free (internal_relocs); + internal_relocs = NULL; /* Cache or free any memory we allocated for the contents. */ - if (free_contents != NULL) + if (contents != NULL + && elf_section_data (section)->this_hdr.contents != contents) { if (! link_info->keep_memory) - free (free_contents); + free (contents); else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (section)->this_hdr.contents = contents; - } - free_contents = NULL; + /* Cache the section contents for elf_link_input_bfd. */ + elf_section_data (section)->this_hdr.contents = contents; } + contents = NULL; } /* Cache or free any memory we allocated for the symbols. */ - if (free_extsyms != NULL) + if (isymbuf != NULL + && symtab_hdr->contents != (unsigned char *) isymbuf) { if (! link_info->keep_memory) - free (free_extsyms); + free (isymbuf); else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = extsyms; - } - free_extsyms = NULL; + /* Cache the symbols for elf_link_input_bfd. */ + symtab_hdr->contents = (unsigned char *) isymbuf; } + isymbuf = 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; + isymbuf = NULL; + /* For error_return. */ + section = sec; - /* We don't have to do anything for a relocateable link, if + /* We don't have to do anything for a relocatable link, if this section does not have relocs, or if this is not a code section. */ - if (link_info->relocateable + if (link_info->relocatable || (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; + return TRUE; 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)); + internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, + link_info->keep_memory); if (internal_relocs == NULL) goto error_return; - if (! link_info->keep_memory) - free_relocs = internal_relocs; + + /* Scan for worst case alignment gap changes. Note that this logic + is not ideal; what we should do is run this scan for every + opcode/address range and adjust accordingly, but that's + expensive. Worst case is that for an alignment of N bytes, we + move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc + all before it. Plus, this still doesn't cover cross-section + jumps with section alignment. */ + irelend = internal_relocs + sec->reloc_count; + align_gap_adjustment = 0; + for (irel = internal_relocs; irel < irelend; irel++) + { + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN) + { + bfd_vma adj = 1 << irel->r_addend; + bfd_vma aend = irel->r_offset; + + aend = BFD_ALIGN (aend, 1 << irel->r_addend); + adj = 2 * adj - adj - 1; + + /* Record the biggest adjustmnet. Skip any alignment at the + end of our section. */ + if (align_gap_adjustment < adj + && aend < sec->output_section->vma + sec->output_offset + sec->size) + align_gap_adjustment = adj; + } + } /* Walk through them looking for relaxing opportunities. */ irelend = internal_relocs + sec->reloc_count; for (irel = internal_relocs; irel < irelend; irel++) { bfd_vma symval; + bfd_signed_vma jump_offset; + asection *sym_sec = NULL; struct elf32_mn10300_link_hash_entry *h = NULL; /* If this isn't something that can be relaxed, then ignore @@ -1418,80 +2737,71 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) 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)) + if (!bfd_malloc_and_get_section (abfd, sec, &contents)) goto error_return; } } /* Read this BFD's symbols if we haven't done so already. */ - if (extsyms == NULL) + if (isymbuf == NULL && symtab_hdr->sh_info != 0) { - /* 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; - } + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf == NULL) + 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 = NULL; + Elf_Internal_Sym *isym; 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) + isym = isymbuf + ELF32_R_SYM (irel->r_info); + 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) + else if (isym->st_shndx == SHN_ABS) sym_sec = bfd_abs_section_ptr; - else if (isym.st_shndx == SHN_COMMON) + else if (isym->st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; else - abort (); + sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - 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); + isym->st_name); + + if ((sym_sec->flags & SEC_MERGE) + && ELF_ST_TYPE (isym->st_info) == STT_SECTION + && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) + { + symval = isym->st_value + irel->r_addend; + symval = _bfd_merged_section_offset (abfd, & sym_sec, + elf_section_data (sym_sec)->sec_info, + symval); + symval += sym_sec->output_section->vma + sym_sec->output_offset - irel->r_addend; + } + else + symval = (isym->st_value + + sym_sec->output_section->vma + + sym_sec->output_offset); /* 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) + new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); + if (new_name == NULL) goto error_return; - sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); + sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); 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); + sym_name, FALSE, FALSE, FALSE); free (new_name); } else @@ -1505,12 +2815,16 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) 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; - } + /* This appears to be a reference to an undefined + symbol. Just ignore it--it will be caught by the + regular reloc processing. */ + continue; + + /* Check for a reference to a discarded symbol and ignore it. */ + if (h->root.root.u.def.section->output_section == NULL) + continue; + + sym_sec = h->root.root.u.def.section->output_section; symval = (h->root.root.u.def.value + h->root.root.u.def.section->output_section->vma @@ -1528,10 +2842,30 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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) + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 + || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) { bfd_vma value = symval; + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 + && h != NULL + && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL + && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN + && h->root.plt.offset != (bfd_vma) -1) + { + asection * splt; + + splt = bfd_get_section_by_name (elf_hash_table (link_info) + ->dynobj, ".plt"); + + value = ((splt->output_section->vma + + splt->output_offset + + h->root.plt.offset) + - (sec->output_section->vma + + sec->output_offset + + irel->r_offset)); + } + /* 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)) @@ -1547,13 +2881,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); @@ -1570,7 +2899,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; } } else if (h) @@ -1599,8 +2928,16 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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) + able to relax, if it's in the same section. */ + if (sec->output_section == sym_sec->output_section) + jump_offset = 0x8001; + else + jump_offset = 0x7fff; + + /* Account for jumps across alignment boundaries using + align_gap_adjustment. */ + if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment + && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment)) { unsigned char code; @@ -1612,13 +2949,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ if (code == 0xdc) @@ -1630,6 +2962,9 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_PLT32) + ? R_MN10300_PLT16 : R_MN10300_PCREL16); /* Delete two bytes of data. */ @@ -1639,7 +2974,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; } } @@ -1664,13 +2999,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); @@ -1687,7 +3017,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; } } else if (h) @@ -1727,13 +3057,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); @@ -1749,7 +3074,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; } } @@ -1776,7 +3101,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) value += irel->r_addend; /* Do nothing if this reloc is the last byte in the section. */ - if (irel->r_offset == sec->_cooked_size) + if (irel->r_offset == sec->size) continue; /* See if the next instruction is an unconditional pc-relative @@ -1817,19 +3142,14 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* We also have to be sure there is no symbol/label at the unconditional branch. */ - if (mn10300_elf_symbol_address_p (abfd, sec, extsyms, + if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Reverse the condition of the first branch. */ switch (code) @@ -1894,7 +3214,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; } /* Try to turn a 24 immediate, displacement or absolute address @@ -1922,28 +3242,23 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit equivalent instructions exists. */ - if (code != 0x6b && code != 0x7b + if (code != 0x6b && code != 0x7b && code != 0x8b && code != 0x9b && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b || (code & 0x0f) == 0x0e)) { /* 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 8bit value. This is currently over - conservative. */ + move the value out of high mem and thus not fit + in a signed 8bit value. This is currently over + conservative. */ if ((value & 0x80) == 0) { /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); @@ -1962,7 +3277,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; } } @@ -1972,9 +3287,40 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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) + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 + || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 + || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) { bfd_vma value = symval; + + if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) + { + asection * sgot; + + sgot = bfd_get_section_by_name (elf_hash_table (link_info) + ->dynobj, ".got"); + + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) + { + value = sgot->output_offset; + + if (h) + value += h->root.got.offset; + else + value += (elf_local_got_offsets + (abfd)[ELF32_R_SYM (irel->r_info)]); + } + else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) + value -= sgot->output_section->vma; + else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) + value = (sgot->output_section->vma + - (sec->output_section->vma + + sec->output_offset + + irel->r_offset)); + else + abort (); + } + value += irel->r_addend; /* See if the value will fit in 24 bits. @@ -1992,34 +3338,31 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (code == 0xfe) { - /* Get the second opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); + /* Get the second opcode. */ + code = bfd_get_8 (abfd, contents + irel->r_offset - 2); /* All the am33 32 -> 24 relaxing possibilities. */ /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit equivalent instructions exists. */ if (code != 0x6b && code != 0x7b && code != 0x8b && code != 0x9b + && (ELF32_R_TYPE (irel->r_info) + != (int) R_MN10300_GOTPC32) && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b || (code & 0x0f) == 0x0e)) { /* 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. This is currently over - conservative. */ + move the value out of high mem and thus not fit + in a signed 16bit value. This is currently over + conservative. */ if ((value & 0x8000) == 0) { /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); @@ -2028,6 +3371,12 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF24 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT24 : R_MN10300_24); /* Delete one byte of data. */ @@ -2038,7 +3387,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; } } @@ -2097,13 +3446,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); @@ -2111,6 +3455,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTPC32) + ? R_MN10300_GOTPC16 : R_MN10300_16); /* Delete two bytes of data. */ @@ -2120,7 +3473,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; } else if ((code & 0xf0) == 0x80 @@ -2135,13 +3488,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) 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; + symtab_hdr->contents = (unsigned char *) isymbuf; if ((code & 0xf3) == 0x81) code = 0x01 + (code & 0x0c); @@ -2157,6 +3505,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTPC32) + ? R_MN10300_GOTPC16 : R_MN10300_16); /* The opcode got shorter too, so we have to fix the @@ -2170,7 +3527,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; /* mov am,(abs32) -> mov am,(abs16) @@ -2185,18 +3542,13 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) case 0x93: /* sp-based offsets are zero-extended. */ if (code >= 0x90 && code <= 0x93 - && (long)value < 0) + && (long) value < 0) 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); @@ -2204,6 +3556,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTPC32) + ? R_MN10300_GOTPC16 : R_MN10300_16); /* Delete two bytes of data. */ @@ -2213,7 +3574,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; } else if ((code & 0xf0) < 0xf0) @@ -2238,18 +3599,13 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* mov imm16, an zero-extends the immediate. */ if (code == 0xdc - && (long)value < 0) + && (long) value < 0) 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; + symtab_hdr->contents = (unsigned char *) isymbuf; if ((code & 0xfc) == 0xcc) code = 0x2c + (code & 0x03); @@ -2269,6 +3625,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTPC32) + ? R_MN10300_GOTPC16 : R_MN10300_16); /* The opcode got shorter too, so we have to fix the @@ -2282,7 +3647,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; /* mov (abs32),an -> mov (abs16),an @@ -2315,23 +3680,18 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) case 0xe3: /* cmp imm16, an zero-extends the immediate. */ if (code == 0xdc - && (long)value < 0) + && (long) value < 0) continue; /* So do sp-based offsets. */ if (code >= 0xb0 && code <= 0xb3 - && (long)value < 0) + && (long) value < 0) 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); @@ -2339,6 +3699,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTPC32) + ? R_MN10300_GOTPC16 : R_MN10300_16); /* Delete two bytes of data. */ @@ -2348,7 +3717,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *again = TRUE; break; } else if (code == 0xfe) @@ -2357,13 +3726,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* 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; + symtab_hdr->contents = (unsigned char *) isymbuf; /* Fix the opcode. */ bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); @@ -2371,6 +3735,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOT32) + ? R_MN10300_GOT16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTOFF32) + ? R_MN10300_GOTOFF16 + : (ELF32_R_TYPE (irel->r_info) + == (int) R_MN10300_GOTPC32) + ? R_MN10300_GOTPC16 : R_MN10300_16); /* Delete two bytes of data. */ @@ -2380,424 +3753,158 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it may be slow. */ - *again = true; + *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 (isymbuf != NULL + && symtab_hdr->contents != (unsigned char *) isymbuf) { if (! link_info->keep_memory) - free (free_extsyms); + free (isymbuf); 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 ,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; - - if (bfd_get_mach (abfd) == bfd_mach_am33) - { - /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ - if (hash->movm_args & 0x1) - hash->movm_stack_size += 6 * 4; - - /* exreg1 space. e4, e5, e6, e7 */ - if (hash->movm_args & 0x2) - hash->movm_stack_size += 4 * 4; - - /* exreg0 space. e2, e3 */ - if (hash->movm_args & 0x4) - hash->movm_stack_size += 2 * 4; + symtab_hdr->contents = (unsigned char *) isymbuf; } } - /* 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++) + if (contents != NULL + && elf_section_data (sec)->this_hdr.contents != contents) { - 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) + if (! link_info->keep_memory) + free (contents); + else { - (sym_hash)->root.root.u.def.value -= count; + /* Cache the section contents for elf_link_input_bfd. */ + elf_section_data (sec)->this_hdr.contents = contents; } } - 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; + if (internal_relocs != NULL + && elf_section_data (sec)->relocs != internal_relocs) + free (internal_relocs); - bfd_elf32_swap_symbol_in (abfd, esym, &isym); + return TRUE; - if (isym.st_shndx == shndx - && isym.st_value == addr) - return true; - } + error_return: + if (isymbuf != NULL + && symtab_hdr->contents != (unsigned char *) isymbuf) + free (isymbuf); + if (contents != NULL + && elf_section_data (section)->this_hdr.contents != contents) + free (contents); + if (internal_relocs != NULL + && elf_section_data (section)->relocs != internal_relocs) + free (internal_relocs); - 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; + 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; +mn10300_elf_get_relocated_section_contents (bfd *output_bfd, + struct bfd_link_info *link_info, + struct bfd_link_order *link_order, + bfd_byte *data, + bfd_boolean relocatable, + 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; + Elf_Internal_Sym *isymbuf = NULL; /* We only need to handle the case of relaxing, or of having a particular set of section contents, specially. */ - if (relocateable + if (relocatable || elf_section_data (input_section)->this_hdr.contents == NULL) return bfd_generic_get_relocated_section_contents (output_bfd, link_info, link_order, data, - relocateable, + relocatable, symbols); symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; memcpy (data, elf_section_data (input_section)->this_hdr.contents, - input_section->_raw_size); + (size_t) input_section->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; - } + Elf_Internal_Sym *isym, *isymend; + bfd_size_type amt; - internal_relocs = (_bfd_elf32_link_read_relocs - (input_bfd, input_section, (PTR) NULL, - (Elf_Internal_Rela *) NULL, false)); + internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, + NULL, 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; + if (symtab_hdr->sh_info != 0) + { + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf == NULL) + goto error_return; + } - sections = (asection **) bfd_malloc (symtab_hdr->sh_info - * sizeof (asection *)); - if (sections == NULL && symtab_hdr->sh_info > 0) + amt = symtab_hdr->sh_info; + amt *= sizeof (asection *); + sections = bfd_malloc (amt); + if (sections == NULL && amt != 0) goto error_return; - isymp = internal_syms; - secpp = sections; - esym = external_syms; - esymend = esym + symtab_hdr->sh_info; - for (; esym < esymend; ++esym, ++isymp, ++secpp) + isymend = isymbuf + symtab_hdr->sh_info; + for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) { asection *isec; - bfd_elf32_swap_symbol_in (input_bfd, esym, isymp); - - if (isymp->st_shndx == SHN_UNDEF) + if (isym->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) + else if (isym->st_shndx == SHN_ABS) isec = bfd_abs_section_ptr; - else if (isymp->st_shndx == SHN_COMMON) + else if (isym->st_shndx == SHN_COMMON) isec = bfd_com_section_ptr; else - { - /* Who knows? */ - isec = NULL; - } + isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); *secpp = isec; } if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, - input_section, data, internal_relocs, - internal_syms, sections)) + input_section, data, internal_relocs, + isymbuf, 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 (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) + free (isymbuf); if (internal_relocs != elf_section_data (input_section)->relocs) free (internal_relocs); - internal_relocs = NULL; } return data; error_return: + if (sections != NULL) + free (sections); + if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) + free (isymbuf); 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; } @@ -2808,34 +3915,33 @@ mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, /* 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; +elf32_mn10300_link_hash_newfunc (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) + if (ret == NULL) + ret = (struct elf32_mn10300_link_hash_entry *) + bfd_hash_allocate (table, sizeof (* ret)); + if (ret == NULL) return (struct bfd_hash_entry *) ret; /* Call the allocation method of the superclass. */ - ret = ((struct elf32_mn10300_link_hash_entry *) + 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) + table, string); + if (ret != NULL) { ret->direct_calls = 0; ret->stack_size = 0; + ret->movm_args = 0; ret->movm_stack_size = 0; ret->flags = 0; - ret->movm_args = 0; + ret->value = 0; } return (struct bfd_hash_entry *) ret; @@ -2844,46 +3950,59 @@ elf32_mn10300_link_hash_newfunc (entry, table, string) /* Create an mn10300 ELF linker hash table. */ static struct bfd_link_hash_table * -elf32_mn10300_link_hash_table_create (abfd) - bfd *abfd; +elf32_mn10300_link_hash_table_create (bfd *abfd) { struct elf32_mn10300_link_hash_table *ret; + bfd_size_type amt = sizeof (* 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) + ret = bfd_malloc (amt); + if (ret == NULL) return NULL; - if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, - elf32_mn10300_link_hash_newfunc)) + if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, + elf32_mn10300_link_hash_newfunc, + sizeof (struct elf32_mn10300_link_hash_entry))) { - bfd_release (abfd, ret); + free (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))); + amt = sizeof (struct elf_link_hash_table); + ret->static_hash_table = bfd_malloc (amt); if (ret->static_hash_table == NULL) { - bfd_release (abfd, ret); + free (ret); return NULL; } - if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, - elf32_mn10300_link_hash_newfunc)) + if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, + elf32_mn10300_link_hash_newfunc, + sizeof (struct elf32_mn10300_link_hash_entry))) { - bfd_release (abfd, ret->static_hash_table); - bfd_release (abfd, ret); + free (ret->static_hash_table); + free (ret); return NULL; } - return &ret->root.root; + return & ret->root.root; } -static int -elf_mn10300_mach (flags) - flagword flags; +/* Free an mn10300 ELF linker hash table. */ + +static void +elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash) +{ + struct elf32_mn10300_link_hash_table *ret + = (struct elf32_mn10300_link_hash_table *) hash; + + _bfd_generic_link_hash_table_free + ((struct bfd_link_hash_table *) ret->static_hash_table); + _bfd_generic_link_hash_table_free + ((struct bfd_link_hash_table *) ret); +} + +static unsigned long +elf_mn10300_mach (flagword flags) { switch (flags & EF_MN10300_MACH) { @@ -2893,6 +4012,9 @@ elf_mn10300_mach (flags) case E_MN10300_MACH_AM33: return bfd_mach_am33; + + case E_MN10300_MACH_AM33_2: + return bfd_mach_am33_2; } } @@ -2900,10 +4022,9 @@ elf_mn10300_mach (flags) file. This gets the MN10300 architecture right based on the machine number. */ -void -_bfd_mn10300_elf_final_write_processing (abfd, linker) - bfd *abfd; - boolean linker ATTRIBUTE_UNUSED; +static void +_bfd_mn10300_elf_final_write_processing (bfd *abfd, + bfd_boolean linker ATTRIBUTE_UNUSED) { unsigned long val; @@ -2917,53 +4038,854 @@ _bfd_mn10300_elf_final_write_processing (abfd, linker) case bfd_mach_am33: val = E_MN10300_MACH_AM33; break; + + case bfd_mach_am33_2: + val = E_MN10300_MACH_AM33_2; + break; } elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); elf_elfheader (abfd)->e_flags |= val; } -boolean -_bfd_mn10300_elf_object_p (abfd) - bfd *abfd; +static bfd_boolean +_bfd_mn10300_elf_object_p (bfd *abfd) { bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); - return true; + 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; +static bfd_boolean +_bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) { if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; + 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; + bfd_get_mach (ibfd))) + return FALSE; + } + + return TRUE; +} + +#define PLT0_ENTRY_SIZE 15 +#define PLT_ENTRY_SIZE 20 +#define PIC_PLT_ENTRY_SIZE 24 + +static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = +{ + 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ + 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ + 0xf0, 0xf4, /* jmp (a0) */ +}; + +static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = +{ + 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ + 0xf0, 0xf4, /* jmp (a0) */ + 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ + 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ +}; + +static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = +{ + 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ + 0xf0, 0xf4, /* jmp (a0) */ + 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ + 0xf8, 0x22, 8, /* mov (8,a2),a0 */ + 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ + 0xf0, 0xf4, /* jmp (a0) */ +}; + +/* Return size of the first PLT entry. */ +#define elf_mn10300_sizeof_plt0(info) \ + (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) + +/* Return size of a PLT entry. */ +#define elf_mn10300_sizeof_plt(info) \ + (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) + +/* Return offset of the PLT0 address in an absolute PLT entry. */ +#define elf_mn10300_plt_plt0_offset(info) 16 + +/* Return offset of the linker in PLT0 entry. */ +#define elf_mn10300_plt0_linker_offset(info) 2 + +/* Return offset of the GOT id in PLT0 entry. */ +#define elf_mn10300_plt0_gotid_offset(info) 9 + +/* Return offset of the temporary in PLT entry. */ +#define elf_mn10300_plt_temp_offset(info) 8 + +/* Return offset of the symbol in PLT entry. */ +#define elf_mn10300_plt_symbol_offset(info) 2 + +/* Return offset of the relocation in PLT entry. */ +#define elf_mn10300_plt_reloc_offset(info) 11 + +/* The name of the dynamic interpreter. This is put in the .interp + section. */ + +#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" + +/* Create dynamic sections when linking against a dynamic object. */ + +static bfd_boolean +_bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) +{ + flagword flags; + asection * s; + const struct elf_backend_data * bed = get_elf_backend_data (abfd); + int ptralign = 0; + + switch (bed->s->arch_size) + { + case 32: + ptralign = 2; + break; + + case 64: + ptralign = 3; + break; + + default: + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and + .rel[a].bss sections. */ + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED); + + s = bfd_make_section_with_flags (abfd, + (bed->default_use_rela_p + ? ".rela.plt" : ".rel.plt"), + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, ptralign)) + return FALSE; + + if (! _bfd_mn10300_elf_create_got_section (abfd, info)) + return FALSE; + + { + const char * secname; + char * relname; + flagword secflags; + asection * sec; + + for (sec = abfd->sections; sec; sec = sec->next) + { + secflags = bfd_get_section_flags (abfd, sec); + if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) + || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) + continue; + + secname = bfd_get_section_name (abfd, sec); + relname = bfd_malloc (strlen (secname) + 6); + strcpy (relname, ".rela"); + strcat (relname, secname); + + s = bfd_make_section_with_flags (abfd, relname, + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, ptralign)) + return FALSE; + } + } + + if (bed->want_dynbss) + { + /* The .dynbss section is a place to put symbols which are defined + by dynamic objects, are referenced by regular objects, and are + not functions. We must allocate space for them in the process + image and use a R_*_COPY reloc to tell the dynamic linker to + initialize them at run time. The linker script puts the .dynbss + section into the .bss section of the final image. */ + s = bfd_make_section_with_flags (abfd, ".dynbss", + SEC_ALLOC | SEC_LINKER_CREATED); + if (s == NULL) + return FALSE; + + /* The .rel[a].bss section holds copy relocs. This section is not + normally needed. We need to create it here, though, so that the + linker will map it to an output section. We can't just create it + only if we need it, because we will not know whether we need it + until we have seen all the input files, and the first time the + main linker code calls BFD after examining all the input files + (size_dynamic_sections) the input sections have already been + mapped to the output sections. If the section turns out not to + be needed, we can discard it later. We will never need this + section when generating a shared object, since they do not use + copy relocs. */ + if (! info->shared) + { + s = bfd_make_section_with_flags (abfd, + (bed->default_use_rela_p + ? ".rela.bss" : ".rel.bss"), + flags | SEC_READONLY); + if (s == NULL + || ! bfd_set_section_alignment (abfd, s, ptralign)) + return FALSE; + } + } + + return TRUE; +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static bfd_boolean +_bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info, + struct elf_link_hash_entry * h) +{ + bfd * dynobj; + asection * s; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && (h->needs_plt + || h->u.weakdef != NULL + || (h->def_dynamic + && h->ref_regular + && !h->def_regular))); + + /* If this is a function, put it in the procedure linkage table. We + will fill in the contents of the procedure linkage table later, + when we know the address of the .got section. */ + if (h->type == STT_FUNC + || h->needs_plt) + { + if (! info->shared + && !h->def_dynamic + && !h->ref_dynamic) + { + /* This case can occur if we saw a PLT reloc in an input + file, but the symbol was never referred to by a dynamic + object. In such a case, we don't actually need to build + a procedure linkage table, and we can just do a REL32 + reloc instead. */ + BFD_ASSERT (h->needs_plt); + return TRUE; + } + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + + s = bfd_get_section_by_name (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + + /* If this is the first .plt entry, make room for the special + first entry. */ + if (s->size == 0) + s->size += elf_mn10300_sizeof_plt0 (info); + + /* If this symbol is not defined in a regular file, and we are + not generating a shared library, then set the symbol to this + location in the .plt. This is required to make function + pointers compare as equal between the normal executable and + the shared library. */ + if (! info->shared + && !h->def_regular) + { + h->root.u.def.section = s; + h->root.u.def.value = s->size; + } + + h->plt.offset = s->size; + + /* Make room for this entry. */ + s->size += elf_mn10300_sizeof_plt (info); + + /* We also need to make an entry in the .got.plt section, which + will be placed in the .got section by the linker script. */ + s = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (s != NULL); + s->size += 4; + + /* We also need to make an entry in the .rela.plt section. */ + s = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (s != NULL); + s->size += sizeof (Elf32_External_Rela); + + return TRUE; + } + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->u.weakdef != NULL) + { + BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined + || h->u.weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->u.weakdef->root.u.def.section; + h->root.u.def.value = h->u.weakdef->root.u.def.value; + return TRUE; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return TRUE; + + /* If there are no references to this symbol that do not use the + GOT, we don't need to generate a copy reloc. */ + if (!h->non_got_ref) + return TRUE; + + if (h->size == 0) + { + (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), + h->root.root.string); + return TRUE; + } + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = bfd_get_section_by_name (dynobj, ".dynbss"); + BFD_ASSERT (s != NULL); + + /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to + copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rela.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection * srel; + + srel = bfd_get_section_by_name (dynobj, ".rela.bss"); + BFD_ASSERT (srel != NULL); + srel->size += sizeof (Elf32_External_Rela); + h->needs_copy = 1; + } + + return _bfd_elf_adjust_dynamic_copy (h, s); +} + +/* Set the sizes of the dynamic sections. */ + +static bfd_boolean +_bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd, + struct bfd_link_info * info) +{ + bfd * dynobj; + asection * s; + bfd_boolean plt; + bfd_boolean relocs; + bfd_boolean reltext; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (info->executable) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + else + { + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + s = bfd_get_section_by_name (dynobj, ".rela.got"); + if (s != NULL) + s->size = 0; + } + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + plt = FALSE; + relocs = FALSE; + reltext = FALSE; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char * name; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + if (streq (name, ".plt")) + { + /* Remember whether there is a PLT. */ + plt = s->size != 0; + } + else if (CONST_STRNEQ (name, ".rela")) + { + if (s->size != 0) + { + asection * target; + + /* Remember whether there are any reloc sections other + than .rela.plt. */ + if (! streq (name, ".rela.plt")) + { + const char * outname; + + relocs = TRUE; + + /* If this relocation section applies to a read only + section, then we probably need a DT_TEXTREL + entry. The entries in the .rela.plt section + really apply to the .got section, which we + created ourselves and so know is not readonly. */ + outname = bfd_get_section_name (output_bfd, + s->output_section); + target = bfd_get_section_by_name (output_bfd, outname + 5); + if (target != NULL + && (target->flags & SEC_READONLY) != 0 + && (target->flags & SEC_ALLOC) != 0) + reltext = TRUE; + } + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; + } + } + else if (! CONST_STRNEQ (name, ".got") + && ! streq (name, ".dynbss")) + /* It's not one of our sections, so don't allocate space. */ + continue; + + if (s->size == 0) + { + /* If we don't need this section, strip it from the + output file. This is mostly to handle .rela.bss and + .rela.plt. We must create both sections in + create_dynamic_sections, because they must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + s->flags |= SEC_EXCLUDE; + continue; + } + + if ((s->flags & SEC_HAS_CONTENTS) == 0) + continue; + + /* Allocate memory for the section contents. We use bfd_zalloc + here in case unused entries are not reclaimed before the + section's contents are written out. This should not happen, + but this way if it does, we get a R_MN10300_NONE reloc + instead of garbage. */ + s->contents = bfd_zalloc (dynobj, s->size); + if (s->contents == NULL) + return FALSE; + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in _bfd_mn10300_elf_finish_dynamic_sections, + but we must add the entries now so that we get the correct + size for the .dynamic section. The DT_DEBUG entry is filled + in by the dynamic linker and used by the debugger. */ + if (! info->shared) + { + if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) + return FALSE; + } + + if (plt) + { + if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) + || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) + || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) + || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) + return FALSE; + } + + if (relocs) + { + if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) + || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) + || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, + sizeof (Elf32_External_Rela))) + return FALSE; + } + + if (reltext) + { + if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) + return FALSE; + } + } + + return TRUE; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static bfd_boolean +_bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd, + struct bfd_link_info * info, + struct elf_link_hash_entry * h, + Elf_Internal_Sym * sym) +{ + bfd * dynobj; + + dynobj = elf_hash_table (info)->dynobj; + + if (h->plt.offset != (bfd_vma) -1) + { + asection * splt; + asection * sgot; + asection * srel; + bfd_vma plt_index; + bfd_vma got_offset; + Elf_Internal_Rela rel; + + /* This symbol has an entry in the procedure linkage table. Set + it up. */ + + BFD_ASSERT (h->dynindx != -1); + + splt = bfd_get_section_by_name (dynobj, ".plt"); + sgot = bfd_get_section_by_name (dynobj, ".got.plt"); + srel = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); + + /* Get the index in the procedure linkage table which + corresponds to this symbol. This is the index of this symbol + in all the symbols for which we are making plt entries. The + first entry in the procedure linkage table is reserved. */ + plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) + / elf_mn10300_sizeof_plt (info)); + + /* Get the offset into the .got table of the entry that + corresponds to this function. Each .got entry is 4 bytes. + The first three are reserved. */ + got_offset = (plt_index + 3) * 4; + + /* Fill in the entry in the procedure linkage table. */ + if (! info->shared) + { + memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, + elf_mn10300_sizeof_plt (info)); + bfd_put_32 (output_bfd, + (sgot->output_section->vma + + sgot->output_offset + + got_offset), + (splt->contents + h->plt.offset + + elf_mn10300_plt_symbol_offset (info))); + + bfd_put_32 (output_bfd, + (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), + (splt->contents + h->plt.offset + + elf_mn10300_plt_plt0_offset (info))); + } + else + { + memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, + elf_mn10300_sizeof_plt (info)); + + bfd_put_32 (output_bfd, got_offset, + (splt->contents + h->plt.offset + + elf_mn10300_plt_symbol_offset (info))); + } + + bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), + (splt->contents + h->plt.offset + + elf_mn10300_plt_reloc_offset (info))); + + /* Fill in the entry in the global offset table. */ + bfd_put_32 (output_bfd, + (splt->output_section->vma + + splt->output_offset + + h->plt.offset + + elf_mn10300_plt_temp_offset (info)), + sgot->contents + got_offset); + + /* Fill in the entry in the .rela.plt section. */ + rel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + got_offset); + rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); + rel.r_addend = 0; + bfd_elf32_swap_reloca_out (output_bfd, &rel, + (bfd_byte *) ((Elf32_External_Rela *) srel->contents + + plt_index)); + + if (!h->def_regular) + /* Mark the symbol as undefined, rather than as defined in + the .plt section. Leave the value alone. */ + sym->st_shndx = SHN_UNDEF; + } + + if (h->got.offset != (bfd_vma) -1) + { + asection * sgot; + asection * srel; + Elf_Internal_Rela rel; + + /* This symbol has an entry in the global offset table. Set it up. */ + sgot = bfd_get_section_by_name (dynobj, ".got"); + srel = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (sgot != NULL && srel != NULL); + + rel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + (h->got.offset & ~1)); + + /* If this is a -Bsymbolic link, and the symbol is defined + locally, we just want to emit a RELATIVE reloc. Likewise if + the symbol was forced to be local because of a version file. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + if (info->shared + && (info->symbolic || h->dynindx == -1) + && h->def_regular) + { + rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); + rel.r_addend = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + } + else + { + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); + rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); + rel.r_addend = 0; + } + + bfd_elf32_swap_reloca_out (output_bfd, &rel, + (bfd_byte *) ((Elf32_External_Rela *) srel->contents + + srel->reloc_count)); + ++ srel->reloc_count; + } + + if (h->needs_copy) + { + asection * s; + Elf_Internal_Rela rel; + + /* This symbol needs a copy reloc. Set it up. */ + BFD_ASSERT (h->dynindx != -1 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)); + + s = bfd_get_section_by_name (h->root.u.def.section->owner, + ".rela.bss"); + BFD_ASSERT (s != NULL); + + rel.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); + rel.r_addend = 0; + bfd_elf32_swap_reloca_out (output_bfd, & rel, + (bfd_byte *) ((Elf32_External_Rela *) s->contents + + s->reloc_count)); + ++ s->reloc_count; + } + + /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ + if (streq (h->root.root.string, "_DYNAMIC") + || h == elf_hash_table (info)->hgot) + sym->st_shndx = SHN_ABS; + + return TRUE; +} + +/* Finish up the dynamic sections. */ + +static bfd_boolean +_bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd, + struct bfd_link_info * info) +{ + bfd * dynobj; + asection * sgot; + asection * sdyn; + + dynobj = elf_hash_table (info)->dynobj; + + sgot = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (sgot != NULL); + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + if (elf_hash_table (info)->dynamic_sections_created) + { + asection * splt; + Elf32_External_Dyn * dyncon; + Elf32_External_Dyn * dynconend; + + BFD_ASSERT (sdyn != NULL); + + dyncon = (Elf32_External_Dyn *) sdyn->contents; + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); + + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + const char * name; + asection * s; + + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + default: + break; + + case DT_PLTGOT: + name = ".got"; + goto get_vma; + + case DT_JMPREL: + name = ".rela.plt"; + get_vma: + s = bfd_get_section_by_name (output_bfd, name); + BFD_ASSERT (s != NULL); + dyn.d_un.d_ptr = s->vma; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_PLTRELSZ: + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + BFD_ASSERT (s != NULL); + dyn.d_un.d_val = s->size; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_RELASZ: + /* My reading of the SVR4 ABI indicates that the + procedure linkage table relocs (DT_JMPREL) should be + included in the overall relocs (DT_RELA). This is + what Solaris does. However, UnixWare can not handle + that case. Therefore, we override the DT_RELASZ entry + here to make it not include the JMPREL relocs. Since + the linker script arranges for .rela.plt to follow all + other relocation sections, we don't have to worry + about changing the DT_RELA entry. */ + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + if (s != NULL) + dyn.d_un.d_val -= s->size; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + } + } + + /* Fill in the first entry in the procedure linkage table. */ + splt = bfd_get_section_by_name (dynobj, ".plt"); + if (splt && splt->size > 0) + { + if (info->shared) + { + memcpy (splt->contents, elf_mn10300_pic_plt_entry, + elf_mn10300_sizeof_plt (info)); + } + else + { + memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); + bfd_put_32 (output_bfd, + sgot->output_section->vma + sgot->output_offset + 4, + splt->contents + elf_mn10300_plt0_gotid_offset (info)); + bfd_put_32 (output_bfd, + sgot->output_section->vma + sgot->output_offset + 8, + splt->contents + elf_mn10300_plt0_linker_offset (info)); + } + + /* UnixWare sets the entsize of .plt to 4, although that doesn't + really seem like the right value. */ + elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; + } + } + + /* Fill in the first three entries in the global offset table. */ + if (sgot->size > 0) + { + if (sdyn == NULL) + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); + else + bfd_put_32 (output_bfd, + sdyn->output_section->vma + sdyn->output_offset, + sgot->contents); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); } - return true; + elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; + + return TRUE; } +/* Classify relocation types, such that combreloc can sort them + properly. */ + +static enum elf_reloc_type_class +_bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) +{ + switch ((int) ELF32_R_TYPE (rela->r_info)) + { + case R_MN10300_RELATIVE: return reloc_class_relative; + case R_MN10300_JMP_SLOT: return reloc_class_plt; + case R_MN10300_COPY: return reloc_class_copy; + default: return reloc_class_normal; + } +} + +#ifndef ELF_ARCH #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_MACHINE_CODE EM_MN10300 +#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 #define ELF_MAXPAGESIZE 0x1000 +#endif #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_rela_normal 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 @@ -2972,15 +4894,41 @@ _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) mn10300_elf_get_relocated_section_contents #define bfd_elf32_bfd_link_hash_table_create \ elf32_mn10300_link_hash_table_create +#define bfd_elf32_bfd_link_hash_table_free \ + elf32_mn10300_link_hash_table_free +#ifndef elf_symbol_leading_char #define elf_symbol_leading_char '_' +#endif /* 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 + _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 + _bfd_mn10300_elf_merge_private_bfd_data + +#define elf_backend_can_gc_sections 1 +#define elf_backend_create_dynamic_sections \ + _bfd_mn10300_elf_create_dynamic_sections +#define elf_backend_adjust_dynamic_symbol \ + _bfd_mn10300_elf_adjust_dynamic_symbol +#define elf_backend_size_dynamic_sections \ + _bfd_mn10300_elf_size_dynamic_sections +#define elf_backend_omit_section_dynsym \ + ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) +#define elf_backend_finish_dynamic_symbol \ + _bfd_mn10300_elf_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + _bfd_mn10300_elf_finish_dynamic_sections + +#define elf_backend_reloc_type_class \ + _bfd_mn10300_elf_reloc_type_class + +#define elf_backend_want_got_plt 1 +#define elf_backend_plt_readonly 1 +#define elf_backend_want_plt_sym 0 +#define elf_backend_got_header_size 12 #include "elf32-target.h"