diff options
Diffstat (limited to 'binutils-2.24/bfd/elf32-cr16.c')
-rw-r--r-- | binutils-2.24/bfd/elf32-cr16.c | 2992 |
1 files changed, 0 insertions, 2992 deletions
diff --git a/binutils-2.24/bfd/elf32-cr16.c b/binutils-2.24/bfd/elf32-cr16.c deleted file mode 100644 index 8ed5af1c..00000000 --- a/binutils-2.24/bfd/elf32-cr16.c +++ /dev/null @@ -1,2992 +0,0 @@ -/* BFD back-end for National Semiconductor's CR16 ELF - Copyright 2007, 2008, 2009, 2010, 2012 Free Software Foundation, Inc. - Written by M R Swami Reddy. - - This file is part of BFD, the Binary File Descriptor library. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ - -#include "sysdep.h" -#include "bfd.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "libiberty.h" -#include "elf-bfd.h" -#include "elf/cr16.h" - -/* The cr16 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_cr16_link_hash_entry -{ - /* The basic elf link hash table entry. */ - struct elf_link_hash_entry root; - - /* For function symbols, the number of times this function is - called directly (ie by name). */ - unsigned int direct_calls; - - /* For function symbols, the size of this function's stack - (if <= 255 bytes). We stuff this into "call" instructions - to this target when it's valid and profitable to do so. - - This does not include stack allocated by movm! */ - unsigned char stack_size; - - /* For function symbols, arguments (if any) for movm instruction - in the prologue. We stuff this value into "call" instructions - to the target when it's valid and profitable to do so. */ - unsigned char movm_args; - - /* For 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; - -/* Used to mark functions which have had redundant parts of their - prologue deleted. */ -#define CR16_DELETED_PROLOGUE_BYTES 0x1 - unsigned char flags; - - /* Calculated value. */ - bfd_vma value; -}; - -/* cr16_reloc_map array maps BFD relocation enum into a CRGAS relocation type. */ - -struct cr16_reloc_map -{ - bfd_reloc_code_real_type bfd_reloc_enum; /* BFD relocation enum. */ - unsigned short cr16_reloc_type; /* CR16 relocation type. */ -}; - -static const struct cr16_reloc_map cr16_reloc_map[R_CR16_MAX] = -{ - {BFD_RELOC_NONE, R_CR16_NONE}, - {BFD_RELOC_CR16_NUM8, R_CR16_NUM8}, - {BFD_RELOC_CR16_NUM16, R_CR16_NUM16}, - {BFD_RELOC_CR16_NUM32, R_CR16_NUM32}, - {BFD_RELOC_CR16_NUM32a, R_CR16_NUM32a}, - {BFD_RELOC_CR16_REGREL4, R_CR16_REGREL4}, - {BFD_RELOC_CR16_REGREL4a, R_CR16_REGREL4a}, - {BFD_RELOC_CR16_REGREL14, R_CR16_REGREL14}, - {BFD_RELOC_CR16_REGREL14a, R_CR16_REGREL14a}, - {BFD_RELOC_CR16_REGREL16, R_CR16_REGREL16}, - {BFD_RELOC_CR16_REGREL20, R_CR16_REGREL20}, - {BFD_RELOC_CR16_REGREL20a, R_CR16_REGREL20a}, - {BFD_RELOC_CR16_ABS20, R_CR16_ABS20}, - {BFD_RELOC_CR16_ABS24, R_CR16_ABS24}, - {BFD_RELOC_CR16_IMM4, R_CR16_IMM4}, - {BFD_RELOC_CR16_IMM8, R_CR16_IMM8}, - {BFD_RELOC_CR16_IMM16, R_CR16_IMM16}, - {BFD_RELOC_CR16_IMM20, R_CR16_IMM20}, - {BFD_RELOC_CR16_IMM24, R_CR16_IMM24}, - {BFD_RELOC_CR16_IMM32, R_CR16_IMM32}, - {BFD_RELOC_CR16_IMM32a, R_CR16_IMM32a}, - {BFD_RELOC_CR16_DISP4, R_CR16_DISP4}, - {BFD_RELOC_CR16_DISP8, R_CR16_DISP8}, - {BFD_RELOC_CR16_DISP16, R_CR16_DISP16}, - {BFD_RELOC_CR16_DISP24, R_CR16_DISP24}, - {BFD_RELOC_CR16_DISP24a, R_CR16_DISP24a}, - {BFD_RELOC_CR16_SWITCH8, R_CR16_SWITCH8}, - {BFD_RELOC_CR16_SWITCH16, R_CR16_SWITCH16}, - {BFD_RELOC_CR16_SWITCH32, R_CR16_SWITCH32}, - {BFD_RELOC_CR16_GOT_REGREL20, R_CR16_GOT_REGREL20}, - {BFD_RELOC_CR16_GOTC_REGREL20, R_CR16_GOTC_REGREL20}, - {BFD_RELOC_CR16_GLOB_DAT, R_CR16_GLOB_DAT} -}; - -static reloc_howto_type cr16_elf_howto_table[] = -{ - HOWTO (R_CR16_NONE, /* type */ - 0, /* rightshift */ - 2, /* size */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_NUM8, /* type */ - 0, /* rightshift */ - 0, /* size */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_NUM8", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_NUM16, /* type */ - 0, /* rightshift */ - 1, /* size */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_NUM16", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_NUM32, /* type */ - 0, /* rightshift */ - 2, /* size */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_NUM32", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_NUM32a, /* type */ - 1, /* rightshift */ - 2, /* size */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_NUM32a", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL4, /* type */ - 0, /* rightshift */ - 0, /* size */ - 4, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL4", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xf, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL4a, /* type */ - 0, /* rightshift */ - 0, /* size */ - 4, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL4a", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xf, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL14, /* type */ - 0, /* rightshift */ - 1, /* size */ - 14, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL14", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x3fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL14a, /* type */ - 0, /* rightshift */ - 1, /* size */ - 14, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL14a", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x3fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL16, /* type */ - 0, /* rightshift */ - 1, /* size */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL16", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL20, /* type */ - 0, /* rightshift */ - 2, /* size */ - 20, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL20", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xfffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_REGREL20a, /* type */ - 0, /* rightshift */ - 2, /* size */ - 20, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_REGREL20a", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xfffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_ABS20, /* type */ - 0, /* rightshift */ - 2, /* size */ - 20, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_ABS20", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xfffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_ABS24, /* type */ - 0, /* rightshift */ - 2, /* size */ - 24, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_ABS24", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM4, /* type */ - 0, /* rightshift */ - 0, /* size */ - 4, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM4", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xf, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM8, /* type */ - 0, /* rightshift */ - 0, /* size */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM8", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM16, /* type */ - 0, /* rightshift */ - 1, /* size */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM16", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM20, /* type */ - 0, /* rightshift */ - 2, /* size */ - 20, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM20", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xfffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM24, /* type */ - 0, /* rightshift */ - 2, /* size */ - 24, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM24", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM32, /* type */ - 0, /* rightshift */ - 2, /* size */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM32", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_IMM32a, /* type */ - 1, /* rightshift */ - 2, /* size */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_IMM32a", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_DISP4, /* type */ - 1, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 4, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_DISP4", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xf, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_DISP8, /* type */ - 1, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_DISP8", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x1ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_DISP16, /* type */ - 0, /* rightshift REVIITS: To sync with WinIDEA*/ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_DISP16", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x1ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - /* REVISIT: DISP24 should be left-shift by 2 as per ISA doc - but its not done, to sync with WinIDEA and CR16 4.1 tools */ - HOWTO (R_CR16_DISP24, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_DISP24", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0x1ffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_DISP24a, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_DISP24a", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* An 8 bit switch table entry. This is generated for an expression - such as ``.byte L1 - L2''. The offset holds the difference - between the reloc address and L2. */ - HOWTO (R_CR16_SWITCH8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_SWITCH8", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 16 bit switch table entry. This is generated for an expression - such as ``.word L1 - L2''. The offset holds the difference - between the reloc address and L2. */ - HOWTO (R_CR16_SWITCH16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_SWITCH16", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 32 bit switch table entry. This is generated for an expression - such as ``.long L1 - L2''. The offset holds the difference - between the reloc address and L2. */ - HOWTO (R_CR16_SWITCH32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_SWITCH32", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_CR16_GOT_REGREL20, /* type */ - 0, /* rightshift */ - 2, /* size */ - 20, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_GOT_REGREL20", /* name */ - TRUE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xfffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_GOTC_REGREL20, /* type */ - 0, /* rightshift */ - 2, /* size */ - 20, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_GOTC_REGREL20", /* name */ - TRUE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xfffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_CR16_GLOB_DAT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_CR16_GLOB_DAT", /* name */ - FALSE, /* partial_inplace */ - 0x0, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE) /* pcrel_offset */ -}; - - -/* Create the GOT section. */ - -static bfd_boolean -_bfd_cr16_elf_create_got_section (bfd * abfd, struct bfd_link_info * info) -{ - flagword flags; - 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_linker_section (abfd, ".got") != NULL) - return TRUE; - - switch (bed->s->arch_size) - { - case 16: - ptralign = 1; - break; - - case 32: - ptralign = 2; - 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); - - s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - - if (bed->want_got_plt) - { - s = bfd_make_section_anyway_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; -} - - -/* Retrieve a howto ptr using a BFD reloc_code. */ - -static reloc_howto_type * -elf_cr16_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - - for (i = 0; i < R_CR16_MAX; i++) - if (code == cr16_reloc_map[i].bfd_reloc_enum) - return &cr16_elf_howto_table[cr16_reloc_map[i].cr16_reloc_type]; - - _bfd_error_handler ("Unsupported CR16 relocation type: 0x%x\n", code); - return NULL; -} - -static reloc_howto_type * -elf_cr16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, - const char *r_name) -{ - unsigned int i; - - for (i = 0; ARRAY_SIZE (cr16_elf_howto_table); i++) - if (cr16_elf_howto_table[i].name != NULL - && strcasecmp (cr16_elf_howto_table[i].name, r_name) == 0) - return cr16_elf_howto_table + i; - - return NULL; -} - -/* Retrieve a howto ptr using an internal relocation entry. */ - -static void -elf_cr16_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, - Elf_Internal_Rela *dst) -{ - unsigned int r_type = ELF32_R_TYPE (dst->r_info); - - BFD_ASSERT (r_type < (unsigned int) R_CR16_MAX); - cache_ptr->howto = cr16_elf_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 bfd_boolean -cr16_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec, - const Elf_Internal_Rela *relocs) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Sym * isymbuf = NULL; - struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - bfd * dynobj; - bfd_vma * local_got_offsets; - asection * sgot; - asection * srelgot; - - sgot = NULL; - srelgot = NULL; - bfd_boolean result = FALSE; - - if (info->relocatable) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); - if (!elf_bad_symtab (abfd)) - sym_hashes_end -= symtab_hdr->sh_info; - - dynobj = elf_hash_table (info)->dynobj; - local_got_offsets = elf_local_got_offsets (abfd); - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - struct elf_link_hash_entry *h; - unsigned long r_symndx; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* PR15323, ref flags aren't set for references in the same - object. */ - h->root.non_ir_ref = 1; - } - - /* Some relocs require a global offset table. */ - if (dynobj == NULL) - { - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_CR16_GOT_REGREL20: - case R_CR16_GOTC_REGREL20: - elf_hash_table (info)->dynobj = dynobj = abfd; - if (! _bfd_cr16_elf_create_got_section (dynobj, info)) - goto fail; - break; - - default: - break; - } - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_CR16_GOT_REGREL20: - case R_CR16_GOTC_REGREL20: - /* This symbol requires a global offset table entry. */ - - if (sgot == NULL) - { - sgot = bfd_get_linker_section (dynobj, ".got"); - BFD_ASSERT (sgot != NULL); - } - - if (srelgot == NULL - && (h != NULL || info->executable)) - { - srelgot = bfd_get_linker_section (dynobj, ".rela.got"); - if (srelgot == NULL) - { - flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY | SEC_LINKER_CREATED - | SEC_READONLY); - srelgot = bfd_make_section_anyway_with_flags (dynobj, - ".rela.got", - flags); - 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_vma *) 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->executable) - /* If we are generating a shared object, we need to - output a R_CR16_RELATIVE reloc so that the dynamic - linker can adjust this GOT entry. */ - srelgot->size += sizeof (Elf32_External_Rela); - } - - sgot->size += 4; - break; - - } - } - - result = TRUE; - fail: - if (isymbuf != NULL) - free (isymbuf); - - return result; -} - -/* Perform a relocation as part of a final link. */ - -static bfd_reloc_status_type -cr16_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 Rvalue, - bfd_vma addend, - struct elf_link_hash_entry * h, - unsigned long symndx ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - asection *sec ATTRIBUTE_UNUSED, - int is_local ATTRIBUTE_UNUSED) -{ - unsigned short r_type = howto->type; - bfd_byte *hit_data = contents + offset; - bfd_vma reloc_bits, check, Rvalue1; - bfd * dynobj; - - dynobj = elf_hash_table (info)->dynobj; - - switch (r_type) - { - case R_CR16_IMM4: - case R_CR16_IMM20: - case R_CR16_ABS20: - break; - - case R_CR16_IMM8: - case R_CR16_IMM16: - case R_CR16_IMM32: - case R_CR16_IMM32a: - case R_CR16_REGREL4: - case R_CR16_REGREL4a: - case R_CR16_REGREL14: - case R_CR16_REGREL14a: - case R_CR16_REGREL16: - case R_CR16_REGREL20: - case R_CR16_REGREL20a: - case R_CR16_GOT_REGREL20: - case R_CR16_GOTC_REGREL20: - case R_CR16_ABS24: - case R_CR16_DISP16: - case R_CR16_DISP24: - /* 'hit_data' is relative to the start of the instruction, not the - relocation offset. Advance it to account for the exact offset. */ - hit_data += 2; - break; - - case R_CR16_NONE: - return bfd_reloc_ok; - break; - - case R_CR16_DISP4: - if (is_local) - Rvalue += -1; - break; - - case R_CR16_DISP8: - case R_CR16_DISP24a: - if (is_local) - Rvalue -= -1; - break; - - case R_CR16_SWITCH8: - case R_CR16_SWITCH16: - case R_CR16_SWITCH32: - /* We only care about the addend, where the difference between - expressions is kept. */ - Rvalue = 0; - - default: - break; - } - - if (howto->pc_relative) - { - /* Subtract the address of the section containing the location. */ - Rvalue -= (input_section->output_section->vma - + input_section->output_offset); - /* Subtract the position of the location within the section. */ - Rvalue -= offset; - } - - /* Add in supplied addend. */ - Rvalue += addend; - - /* Complain if the bitfield overflows, whether it is considered - as signed or unsigned. */ - check = Rvalue >> howto->rightshift; - - /* Assumes two's complement. This expression avoids - overflow if howto->bitsize is the number of bits in - bfd_vma. */ - reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1; - - /* For GOT and GOTC relocs no boundary checks applied. */ - if (!((r_type == R_CR16_GOT_REGREL20) - || (r_type == R_CR16_GOTC_REGREL20))) - { - if (((bfd_vma) check & ~reloc_bits) != 0 - && (((bfd_vma) check & ~reloc_bits) - != (-(bfd_vma) 1 & ~reloc_bits))) - { - /* The above right shift is incorrect for a signed - value. See if turning on the upper bits fixes the - overflow. */ - if (howto->rightshift && (bfd_signed_vma) Rvalue < 0) - { - check |= ((bfd_vma) - 1 - & ~((bfd_vma) - 1 - >> howto->rightshift)); - - if (((bfd_vma) check & ~reloc_bits) - != (-(bfd_vma) 1 & ~reloc_bits)) - return bfd_reloc_overflow; - } - else - return bfd_reloc_overflow; - } - - /* Drop unwanted bits from the value we are relocating to. */ - Rvalue >>= (bfd_vma) howto->rightshift; - - /* Apply dst_mask to select only relocatable part of the insn. */ - Rvalue &= howto->dst_mask; - } - - switch (howto->size) - { - case 0: - if (r_type == R_CR16_DISP8) - { - Rvalue1 = bfd_get_16 (input_bfd, hit_data); - Rvalue = ((Rvalue1 & 0xf000) | ((Rvalue << 4) & 0xf00) - | (Rvalue1 & 0x00f0) | (Rvalue & 0xf)); - bfd_put_16 (input_bfd, Rvalue, hit_data); - } - else if (r_type == R_CR16_IMM4) - { - Rvalue1 = bfd_get_16 (input_bfd, hit_data); - Rvalue = (((Rvalue1 & 0xff) << 8) | ((Rvalue << 4) & 0xf0) - | ((Rvalue1 & 0x0f00) >> 8)); - bfd_put_16 (input_bfd, Rvalue, hit_data); - } - else if (r_type == R_CR16_DISP4) - { - Rvalue1 = bfd_get_16 (input_bfd, hit_data); - Rvalue = (Rvalue1 | ((Rvalue & 0xf) << 4)); - bfd_put_16 (input_bfd, Rvalue, hit_data); - } - else - { - bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data); - } - break; - - case 1: - if (r_type == R_CR16_DISP16) - { - Rvalue |= (bfd_get_16 (input_bfd, hit_data)); - Rvalue = ((Rvalue & 0xfffe) | ((Rvalue >> 16) & 0x1)); - } - if (r_type == R_CR16_IMM16) - { - Rvalue1 = bfd_get_16 (input_bfd, hit_data); - - /* Add or subtract the offset value. */ - if (Rvalue1 & 0x8000) - Rvalue -= (~Rvalue1 + 1) & 0xffff; - else - Rvalue += Rvalue1; - - /* Check for range. */ - if ((long) Rvalue > 0xffff || (long) Rvalue < 0x0) - return bfd_reloc_overflow; - } - - bfd_put_16 (input_bfd, Rvalue, hit_data); - break; - - case 2: - if ((r_type == R_CR16_ABS20) || (r_type == R_CR16_IMM20)) - { - Rvalue1 = (bfd_get_16 (input_bfd, hit_data + 2) - | (((bfd_get_16 (input_bfd, hit_data) & 0xf) <<16))); - - /* Add or subtract the offset value. */ - if (Rvalue1 & 0x80000) - Rvalue -= (~Rvalue1 + 1) & 0xfffff; - else - Rvalue += Rvalue1; - - /* Check for range. */ - if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, ((bfd_get_16 (input_bfd, hit_data) & 0xfff0) - | ((Rvalue >> 16) & 0xf)), hit_data); - bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); - } - else if (r_type == R_CR16_GOT_REGREL20) - { - asection * sgot = bfd_get_linker_section (dynobj, ".got"); - - if (h != NULL) - { - 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, Rvalue, sgot->contents + off); - - Rvalue = sgot->output_offset + off; - } - else - { - bfd_vma off; - - off = elf_local_got_offsets (input_bfd)[symndx]; - bfd_put_32 (output_bfd,Rvalue, sgot->contents + off); - - Rvalue = sgot->output_offset + off; - } - - Rvalue += addend; - - /* REVISIT: if ((long) Rvalue > 0xffffff || - (long) Rvalue < -0x800000). */ - if ((long) Rvalue > 0xffffff || (long) Rvalue < 0) - return bfd_reloc_overflow; - - - bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data)) - | (((Rvalue >> 16) & 0xf) << 8), hit_data); - bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); - - } - else if (r_type == R_CR16_GOTC_REGREL20) - { - asection * sgot; - sgot = bfd_get_linker_section (dynobj, ".got"); - - if (h != NULL) - { - bfd_vma off; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - - Rvalue >>=1; /* For code symbols. */ - - 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, Rvalue, sgot->contents + off); - - Rvalue = sgot->output_offset + off; - } - else - { - bfd_vma off; - - off = elf_local_got_offsets (input_bfd)[symndx]; - Rvalue >>= 1; - bfd_put_32 (output_bfd,Rvalue, sgot->contents + off); - Rvalue = sgot->output_offset + off; - } - - Rvalue += addend; - - /* Check if any value in DISP. */ - Rvalue1 =((bfd_get_32 (input_bfd, hit_data) >>16) - | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16)); - - /* Add or subtract the offset value. */ - if (Rvalue1 & 0x80000) - Rvalue -= (~Rvalue1 + 1) & 0xfffff; - else - Rvalue += Rvalue1; - - /* Check for range. */ - /* REVISIT: if ((long) Rvalue > 0xffffff - || (long) Rvalue < -0x800000). */ - if ((long) Rvalue > 0xffffff || (long) Rvalue < 0) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data)) - | (((Rvalue >> 16) & 0xf) << 8), hit_data); - bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2); - } - else - { - if (r_type == R_CR16_ABS24) - { - Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16) - | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16) - | (((bfd_get_32 (input_bfd, hit_data) & 0xf) <<20))); - - /* Add or subtract the offset value. */ - if (Rvalue1 & 0x800000) - Rvalue -= (~Rvalue1 + 1) & 0xffffff; - else - Rvalue += Rvalue1; - - /* Check for Range. */ - if ((long) Rvalue > 0xffffff || (long) Rvalue < 0x0) - return bfd_reloc_overflow; - - Rvalue = ((((Rvalue >> 20) & 0xf) | (((Rvalue >> 16) & 0xf)<<8) - | (bfd_get_32 (input_bfd, hit_data) & 0xf0f0)) - | ((Rvalue & 0xffff) << 16)); - } - else if (r_type == R_CR16_DISP24) - { - Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8) - | (bfd_get_16 (input_bfd, hit_data))) - | (((Rvalue & 0xfffe) | ((Rvalue >> 24) & 0x1)) << 16)); - } - else if ((r_type == R_CR16_IMM32) || (r_type == R_CR16_IMM32a)) - { - Rvalue1 =((((bfd_get_32 (input_bfd, hit_data)) >> 16) &0xffff) - | (((bfd_get_32 (input_bfd, hit_data)) &0xffff)) << 16); - - /* Add or subtract the offset value. */ - if (Rvalue1 & 0x80000000) - Rvalue -= (~Rvalue1 + 1) & 0xffffffff; - else - Rvalue += Rvalue1; - - /* Check for range. */ - if (Rvalue > 0xffffffff || (long) Rvalue < 0x0) - return bfd_reloc_overflow; - - Rvalue = (((Rvalue >> 16)& 0xffff) | (Rvalue & 0xffff) << 16); - } - else if (r_type == R_CR16_DISP24a) - { - Rvalue = (((Rvalue & 0xfffffe) | (Rvalue >> 23))); - Rvalue = ((Rvalue >> 16) & 0xff) | ((Rvalue & 0xffff) << 16) - | (bfd_get_32 (input_bfd, hit_data)); - } - else if ((r_type == R_CR16_REGREL20) - || (r_type == R_CR16_REGREL20a)) - { - Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16) - | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16)); - /* Add or subtract the offset value. */ - if (Rvalue1 & 0x80000) - Rvalue -= (~Rvalue1 + 1) & 0xfffff; - else - Rvalue += Rvalue1; - - /* Check for range. */ - if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0) - return bfd_reloc_overflow; - - Rvalue = (((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8) - | ((Rvalue & 0xffff) << 16))) - | (bfd_get_32 (input_bfd, hit_data) & 0xf0ff)); - - } - else if (r_type == R_CR16_NUM32) - { - Rvalue1 = (bfd_get_32 (input_bfd, hit_data)); - - /* Add or subtract the offset value */ - if (Rvalue1 & 0x80000000) - Rvalue -= (~Rvalue1 + 1) & 0xffffffff; - else - Rvalue += Rvalue1; - - /* Check for Ranga */ - if (Rvalue > 0xffffffff) - return bfd_reloc_overflow; - } - - bfd_put_32 (input_bfd, Rvalue, hit_data); - } - break; - - default: - return bfd_reloc_notsupported; - } - - return bfd_reloc_ok; -} - -/* Delete some bytes from a section while relaxing. */ - -static bfd_boolean -elf32_cr16_relax_delete_bytes (struct bfd_link_info *link_info, 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; - bfd_vma toaddr; - Elf_Internal_Sym *isym; - Elf_Internal_Sym *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - struct elf_link_hash_entry **start_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - contents = elf_section_data (sec)->this_hdr.contents; - - toaddr = sec->size; - - irel = elf_section_data (sec)->relocs; - irelend = irel + sec->reloc_count; - - /* Actually delete the bytes. */ - memmove (contents + addr, contents + addr + count, - (size_t) (toaddr - addr - count)); - sec->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. */ - 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) - { - /* Adjust the addend of SWITCH relocations in this section, - which reference this local symbol. */ -#if 0 - for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) - { - unsigned long r_symndx; - Elf_Internal_Sym *rsym; - bfd_vma addsym, subsym; - - /* Skip if not a SWITCH relocation. */ - if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH8 - && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH16 - && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH32) - continue; - - r_symndx = ELF32_R_SYM (irel->r_info); - rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx; - - /* Skip if not the local adjusted symbol. */ - if (rsym != isym) - continue; - - addsym = isym->st_value; - subsym = addsym - irel->r_addend; - - /* Fix the addend only when -->> (addsym > addr >= subsym). */ - if (subsym <= addr) - irel->r_addend -= count; - else - continue; - } -#endif - - isym->st_value -= 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 = start_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; - - /* The '--wrap SYMBOL' option is causing a pain when the object file, - containing the definition of __wrap_SYMBOL, includes a direct - call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference - the same symbol (which is __wrap_SYMBOL), but still exist as two - different symbols in 'sym_hashes', we don't want to adjust - the global symbol __wrap_SYMBOL twice. - This check is only relevant when symbols are being wrapped. */ - if (link_info->wrap_hash != NULL) - { - struct elf_link_hash_entry **cur_sym_hashes; - - /* Loop only over the symbols whom been already checked. */ - for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes; - cur_sym_hashes++) - /* If the current symbol is identical to 'sym_hash', that means - the symbol was already adjusted (or at least checked). */ - if (*cur_sym_hashes == sym_hash) - break; - - /* Don't adjust the symbol again. */ - if (cur_sym_hashes < sym_hashes) - continue; - } - - 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) - sym_hash->root.u.def.value -= count; - } - - return TRUE; -} - -/* Relocate a CR16 ELF section. */ - -static bfd_boolean -elf32_cr16_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 elf_link_hash_entry *h; - bfd_vma relocation; - bfd_reloc_status_type r; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - howto = cr16_elf_howto_table + (r_type); - - h = NULL; - sym = NULL; - sec = NULL; - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - } - else - { - bfd_boolean unresolved_reloc, warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, howto, 0, contents); - - if (info->relocatable) - continue; - - r = cr16_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 = NULL; - - if (h != NULL) - name = h->root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL || *name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - switch (r) - { - case bfd_reloc_overflow: - if (!((*info->callbacks->reloc_overflow) - (info, (h ? &h->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; - break; - - case bfd_reloc_outofrange: - msg = _("internal error: out of range error"); - goto common_error; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - goto common_error; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous error"); - goto common_error; - - default: - msg = _("internal error: unknown error"); - /* Fall through. */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - } - } - } - - return TRUE; -} - -/* This is a version of bfd_generic_get_relocated_section_contents - which uses elf32_cr16_relocate_section. */ - -static bfd_byte * -elf32_cr16_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; - 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 (relocatable - || elf_section_data (input_section)->this_hdr.contents == NULL) - return bfd_generic_get_relocated_section_contents (output_bfd, link_info, - link_order, data, - relocatable, - symbols); - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - - memcpy (data, elf_section_data (input_section)->this_hdr.contents, - (size_t) input_section->size); - - if ((input_section->flags & SEC_RELOC) != 0 - && input_section->reloc_count > 0) - { - Elf_Internal_Sym *isym; - Elf_Internal_Sym *isymend; - asection **secpp; - bfd_size_type amt; - - internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, - NULL, NULL, FALSE); - if (internal_relocs == NULL) - 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; - } - - amt = symtab_hdr->sh_info; - amt *= sizeof (asection *); - sections = bfd_malloc (amt); - if (sections == NULL && amt != 0) - goto error_return; - - isymend = isymbuf + symtab_hdr->sh_info; - for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) - { - asection *isec; - - if (isym->st_shndx == SHN_UNDEF) - isec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - isec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - isec = bfd_com_section_ptr; - else - isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); - - *secpp = isec; - } - - if (! elf32_cr16_relocate_section (output_bfd, link_info, input_bfd, - input_section, data, internal_relocs, - isymbuf, sections)) - goto error_return; - - if (sections != NULL) - free (sections); - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (elf_section_data (input_section)->relocs != internal_relocs) - free (internal_relocs); - } - - return data; - - error_return: - if (sections != NULL) - free (sections); - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (input_section)->relocs != internal_relocs) - free (internal_relocs); - return NULL; -} - -/* Assorted hash table functions. */ - -/* Initialize an entry in the link hash table. */ - -/* Create an entry in an CR16 ELF linker hash table. */ - -static struct bfd_hash_entry * -elf32_cr16_link_hash_newfunc (struct bfd_hash_entry *entry, - struct bfd_hash_table *table, - const char *string) -{ - struct elf32_cr16_link_hash_entry *ret = - (struct elf32_cr16_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct elf32_cr16_link_hash_entry *) NULL) - ret = ((struct elf32_cr16_link_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct elf32_cr16_link_hash_entry))); - if (ret == (struct elf32_cr16_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct elf32_cr16_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct elf32_cr16_link_hash_entry *) NULL) - { - ret->direct_calls = 0; - ret->stack_size = 0; - ret->movm_args = 0; - ret->movm_stack_size = 0; - ret->flags = 0; - ret->value = 0; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create an cr16 ELF linker hash table. */ - -static struct bfd_link_hash_table * -elf32_cr16_link_hash_table_create (bfd *abfd) -{ - struct elf_link_hash_table *ret; - bfd_size_type amt = sizeof (struct elf_link_hash_table); - - ret = (struct elf_link_hash_table *) bfd_zmalloc (amt); - if (ret == (struct elf_link_hash_table *) NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (ret, abfd, - elf32_cr16_link_hash_newfunc, - sizeof (struct elf32_cr16_link_hash_entry), - GENERIC_ELF_DATA)) - { - free (ret); - return NULL; - } - - return &ret->root; -} - -static unsigned long -elf_cr16_mach (flagword flags) -{ - switch (flags) - { - case EM_CR16: - default: - return bfd_mach_cr16; - } -} - -/* The final processing done just before writing out a CR16 ELF object - file. This gets the CR16 architecture right based on the machine - number. */ - -static void -_bfd_cr16_elf_final_write_processing (bfd *abfd, - bfd_boolean linker ATTRIBUTE_UNUSED) -{ - unsigned long val; - switch (bfd_get_mach (abfd)) - { - default: - case bfd_mach_cr16: - val = EM_CR16; - break; - } - - - elf_elfheader (abfd)->e_flags |= val; -} - - -static bfd_boolean -_bfd_cr16_elf_object_p (bfd *abfd) -{ - bfd_default_set_arch_mach (abfd, bfd_arch_cr16, - elf_cr16_mach (elf_elfheader (abfd)->e_flags)); - return TRUE; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ - -static bfd_boolean -_bfd_cr16_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; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) - { - if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), - bfd_get_mach (ibfd))) - return FALSE; - } - - return TRUE; -} - - -/* This function handles relaxing for the CR16. - - There's quite a few relaxing opportunites available on the CR16: - - * bcond:24 -> bcond:16 1 byte - * bcond:16 -> bcond:8 1 byte - * arithmetic imm32 -> arithmetic imm20 12 bits - * arithmetic imm20/imm16 -> arithmetic imm4 12/16 bits - - Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */ - -static bfd_boolean -elf32_cr16_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; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *contents = NULL; - Elf_Internal_Sym *isymbuf = NULL; - - /* Assume nothing changes. */ - *again = FALSE; - - /* 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->relocatable - || (sec->flags & SEC_RELOC) == 0 - || sec->reloc_count == 0 - || (sec->flags & SEC_CODE) == 0) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - - /* Get a copy of the native relocations. */ - internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, - link_info->keep_memory); - if (internal_relocs == NULL) - goto error_return; - - /* Walk through them looking for relaxing opportunities. */ - irelend = internal_relocs + sec->reloc_count; - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - - /* If this isn't something that can be relaxed, then ignore - this reloc. */ - if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP16 - && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP24 - && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM32 - && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM20 - && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM16) - continue; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - /* Go get them off disk. */ - else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL && symtab_hdr->sh_info != 0) - { - 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) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - asection *sym_sec; - - 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 == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = (isym->st_value - + sym_sec->output_section->vma - + sym_sec->output_offset); - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - - if (h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - - symval = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - - /* Try to turn a 24 branch/call into a 16bit relative - branch/call. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP24) - { - bfd_vma value = symval; - - /* Deal with pc-relative gunk. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value += irel->r_addend; - - /* See if the value will fit in 16 bits, note the high value is - 0xfffe + 2 as the target will be two bytes closer if we are - able to relax. */ - if ((long) value < 0x10000 && (long) value > -0x10002) - { - unsigned int code; - - /* Get the opcode. */ - code = (unsigned int) bfd_get_32 (abfd, contents + irel->r_offset); - - /* Verify it's a 'bcond' and fix the opcode. */ - if ((code & 0xffff) == 0x0010) - bfd_put_16 (abfd, 0x1800 | ((0xf & (code >> 20)) << 4), contents + irel->r_offset); - else - continue; - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_CR16_DISP16); - - /* Delete two bytes of data. */ - if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - - /* Try to turn a 16bit pc-relative branch into an - 8bit pc-relative branch. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP16) - { - bfd_vma value = symval; - - /* Deal with pc-relative gunk. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value += irel->r_addend; - - /* See if the value will fit in 8 bits, note the high value is - 0xfc + 2 as the target will be two bytes closer if we are - able to relax. */ - /*if ((long) value < 0x1fa && (long) value > -0x100) REVISIT:range */ - if ((long) value < 0xfa && (long) value > -0x100) - { - unsigned short code; - - /* Get the opcode. */ - code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); - - /* Verify it's a 'bcond' and fix the opcode. */ - if ((code & 0xff0f) == 0x1800) - bfd_put_16 (abfd, (code & 0xf0f0), contents + irel->r_offset); - else - continue; - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_CR16_DISP8); - - /* Delete two bytes of data. */ - if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - - /* Try to turn a 32-bit IMM address into a 20/16-bit IMM address */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM32) - { - bfd_vma value = symval; - unsigned short is_add_mov = 0; - bfd_vma value1 = 0; - - /* Get the existing value from the mcode */ - value1 = ((bfd_get_32 (abfd, contents + irel->r_offset + 2) >> 16) - |(((bfd_get_32 (abfd, contents + irel->r_offset + 2) & 0xffff) << 16))); - - /* See if the value will fit in 20 bits. */ - if ((long) (value + value1) < 0xfffff && (long) (value + value1) > 0) - { - unsigned short code; - - /* Get the opcode. */ - code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); - - /* Verify it's a 'arithmetic ADDD or MOVD instruction'. - For ADDD and MOVD only, convert to IMM32 -> IMM20. */ - - if (((code & 0xfff0) == 0x0070) || ((code & 0xfff0) == 0x0020)) - is_add_mov = 1; - - if (is_add_mov) - { - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - if ((code & 0xfff0) == 0x0070) /* For movd. */ - bfd_put_8 (abfd, 0x05, contents + irel->r_offset + 1); - else /* code == 0x0020 for addd. */ - bfd_put_8 (abfd, 0x04, contents + irel->r_offset + 1); - - bfd_put_8 (abfd, (code & 0xf) << 4, contents + irel->r_offset); - - /* If existing value is nagavive adjust approriately - place the 16-20bits (ie 4 bit) in new opcode, - as the 0xffffxxxx, the higher 2 byte values removed. */ - if (value1 & 0x80000000) - bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset); - else - bfd_put_8 (abfd, (((value1 >> 16)&0xf) | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_CR16_IMM20); - - /* Delete two bytes of data. */ - if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - - /* See if the value will fit in 16 bits. */ - if ((!is_add_mov) - && ((long)(value + value1) < 0x7fff && (long)(value + value1) > 0)) - { - unsigned short code; - - /* Get the opcode. */ - code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - if ((code & 0xf0) == 0x70) /* For movd. */ - bfd_put_8 (abfd, 0x54, contents + irel->r_offset + 1); - else if ((code & 0xf0) == 0x20) /* For addd. */ - bfd_put_8 (abfd, 0x60, contents + irel->r_offset + 1); - else if ((code & 0xf0) == 0x90) /* For cmpd. */ - bfd_put_8 (abfd, 0x56, contents + irel->r_offset + 1); - else - continue; - - bfd_put_8 (abfd, 0xb0 | (code & 0xf), contents + irel->r_offset); - - /* If existing value is nagavive adjust approriately - place the 12-16bits (ie 4 bit) in new opcode, - as the 0xfffffxxx, the higher 2 byte values removed. */ - if (value1 & 0x80000000) - bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset); - else - bfd_put_16 (abfd, value1, contents + irel->r_offset + 2); - - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_CR16_IMM16); - - /* Delete two bytes of data. */ - if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - -#if 0 - /* Try to turn a 16bit immediate address into a 4bit - immediate address. */ - if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20) - || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM16)) - { - bfd_vma value = symval; - bfd_vma value1 = 0; - - /* Get the existing value from the mcode */ - value1 = ((bfd_get_16 (abfd, contents + irel->r_offset + 2) & 0xffff)); - - if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20) - { - value1 |= ((bfd_get_16 (abfd, contents + irel->r_offset + 1) & 0xf000) << 0x4); - } - - /* See if the value will fit in 4 bits. */ - if ((((long) (value + value1)) < 0xf) - && (((long) (value + value1)) > 0)) - { - unsigned short code; - - /* Get the opcode. */ - code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset); - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - if (((code & 0x0f00) == 0x0400) || ((code & 0x0f00) == 0x0500)) - { - if ((code & 0x0f00) == 0x0400) /* For movd imm20. */ - bfd_put_8 (abfd, 0x60, contents + irel->r_offset); - else /* For addd imm20. */ - bfd_put_8 (abfd, 0x54, contents + irel->r_offset); - bfd_put_8 (abfd, (code & 0xf0) >> 4, contents + irel->r_offset + 1); - } - else - { - if ((code & 0xfff0) == 0x56b0) /* For cmpd imm16. */ - bfd_put_8 (abfd, 0x56, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x54b0) /* For movd imm16. */ - bfd_put_8 (abfd, 0x54, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x58b0) /* For movb imm16. */ - bfd_put_8 (abfd, 0x58, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x5Ab0) /* For movw imm16. */ - bfd_put_8 (abfd, 0x5A, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x60b0) /* For addd imm16. */ - bfd_put_8 (abfd, 0x60, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x30b0) /* For addb imm16. */ - bfd_put_8 (abfd, 0x30, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x2Cb0) /* For addub imm16. */ - bfd_put_8 (abfd, 0x2C, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x32b0) /* For adduw imm16. */ - bfd_put_8 (abfd, 0x32, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x38b0) /* For subb imm16. */ - bfd_put_8 (abfd, 0x38, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x3Cb0) /* For subcb imm16. */ - bfd_put_8 (abfd, 0x3C, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x3Fb0) /* For subcw imm16. */ - bfd_put_8 (abfd, 0x3F, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x3Ab0) /* For subw imm16. */ - bfd_put_8 (abfd, 0x3A, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x50b0) /* For cmpb imm16. */ - bfd_put_8 (abfd, 0x50, contents + irel->r_offset); - else if ((code & 0xfff0) == 0x52b0) /* For cmpw imm16. */ - bfd_put_8 (abfd, 0x52, contents + irel->r_offset); - else - continue; - - bfd_put_8 (abfd, (code & 0xf), contents + irel->r_offset + 1); - } - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_CR16_IMM4); - - /* Delete two bytes of data. */ - if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } -#endif - } - - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (! link_info->keep_memory) - free (isymbuf); - else - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) isymbuf; - } - - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - { - if (! link_info->keep_memory) - free (contents); - else - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (sec)->this_hdr.contents = contents; - - } - - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return TRUE; - - error_return: - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - free (contents); - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return FALSE; -} - -static asection * -elf32_cr16_gc_mark_hook (asection *sec, - struct bfd_link_info *info, - Elf_Internal_Rela *rel, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym) -{ - return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); -} - -/* Update the got entry reference counts for the section being removed. */ - -static bfd_boolean -elf32_cr16_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - asection *sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) -{ - /* We don't support garbage collection of GOT and PLT relocs yet. */ - return TRUE; -} - -/* Create dynamic sections when linking against a dynamic object. */ - -static bfd_boolean -_bfd_cr16_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 16: - ptralign = 1; - break; - - case 32: - ptralign = 2; - 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_anyway_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_cr16_elf_create_got_section (abfd, info)) - 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_anyway_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->executable) - { - s = bfd_make_section_anyway_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_cr16_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->executable - && !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; - } - - /* 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_linker_section (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_linker_section (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->executable) - 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; - - /* 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_linker_section (dynobj, ".dynbss"); - BFD_ASSERT (s != NULL); - - /* We must generate a R_CR16_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 && h->size != 0) - { - asection * srel; - - srel = bfd_get_linker_section (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_cr16_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) - { -#if 0 - s = bfd_get_linker_section (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - s->size = sizeof ELF_DYNAMIC_INTERPRETER; - s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; -#endif - } - } - 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_linker_section (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 (strcmp (name, ".plt") == 0) - { - /* 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 (strcmp (name, ".rela.plt") != 0) - { - const char * outname; - - relocs = TRUE; - - /* If this relocation section applies to a read only - section, then we probably need a DT_TEXTREL - entry. The entries in the .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") - && strcmp (name, ".dynbss") != 0) - /* 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_CR16_NONE reloc - instead of garbage. */ - s->contents = (bfd_byte *) 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_cr16_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->executable) - { - 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_cr16_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->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_linker_section (dynobj, ".got"); - srel = bfd_get_linker_section (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->executable - && (info->symbolic || h->dynindx == -1) - && h->def_regular) - { - rel.r_info = ELF32_R_INFO (0, R_CR16_GOT_REGREL20); - 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_CR16_GOT_REGREL20); - 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_linker_section (dynobj, ".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_CR16_GOT_REGREL20); - 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 (h == elf_hash_table (info)->hdynamic - || h == elf_hash_table (info)->hgot) - sym->st_shndx = SHN_ABS; - - return TRUE; -} - -/* Finish up the dynamic sections. */ - -static bfd_boolean -_bfd_cr16_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_linker_section (dynobj, ".got.plt"); - BFD_ASSERT (sgot != NULL); - sdyn = bfd_get_linker_section (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - 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 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); - } - - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - - return TRUE; -} - -/* Given a .data.rel section and a .emreloc in-memory section, store - relocation information into the .emreloc section which can be - used at runtime to relocate the section. This is called by the - linker when the --embedded-relocs switch is used. This is called - after the add_symbols entry point has been called for all the - objects, and before the final_link entry point is called. */ - -bfd_boolean -bfd_cr16_elf32_create_embedded_relocs (bfd *abfd, - struct bfd_link_info *info, - asection *datasec, - asection *relsec, - char **errmsg) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Sym *isymbuf = NULL; - Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *p; - bfd_size_type amt; - - BFD_ASSERT (! info->relocatable); - - *errmsg = NULL; - - if (datasec->reloc_count == 0) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf_link_read_relocs - (abfd, datasec, NULL, NULL, info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - amt = (bfd_size_type) datasec->reloc_count * 8; - relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); - if (relsec->contents == NULL) - goto error_return; - - p = relsec->contents; - - irelend = internal_relocs + datasec->reloc_count; - for (irel = internal_relocs; irel < irelend; irel++, p += 8) - { - asection *targetsec; - - /* We are going to write a four byte longword into the runtime - reloc section. The longword will be the address in the data - section which must be relocated. It is followed by the name - of the target section NUL-padded or truncated to 8 - characters. */ - - /* We can only relocate absolute longword relocs at run time. */ - if (!((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a) - || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32))) - { - *errmsg = _("unsupported reloc type"); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - /* Get the target section referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL) - { - 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; - } - - isym = isymbuf + ELF32_R_SYM (irel->r_info); - targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - targetsec = h->root.u.def.section; - else - targetsec = NULL; - } - - bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); - memset (p + 4, 0, 4); - if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a) - && (targetsec != NULL) ) - strncpy ((char *) p + 4, targetsec->output_section->name, 4); - } - - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (datasec)->relocs != internal_relocs) - free (internal_relocs); - return TRUE; - -error_return: - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (datasec)->relocs != internal_relocs) - free (internal_relocs); - return FALSE; -} - - -/* Classify relocation types, such that combreloc can sort them - properly. */ - -static enum elf_reloc_type_class -_bfd_cr16_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, - const asection *rel_sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela *rela) -{ - switch ((int) ELF32_R_TYPE (rela->r_info)) - { - case R_CR16_GOT_REGREL20: - case R_CR16_GOTC_REGREL20: - return reloc_class_relative; - default: - return reloc_class_normal; - } -} - -/* Definitions for setting CR16 target vector. */ -#define TARGET_LITTLE_SYM bfd_elf32_cr16_vec -#define TARGET_LITTLE_NAME "elf32-cr16" -#define ELF_ARCH bfd_arch_cr16 -#define ELF_MACHINE_CODE EM_CR16 -#define ELF_MACHINE_ALT1 EM_CR16_OLD -#define ELF_MAXPAGESIZE 0x1 -#define elf_symbol_leading_char '_' - -#define bfd_elf32_bfd_reloc_type_lookup elf_cr16_reloc_type_lookup -#define bfd_elf32_bfd_reloc_name_lookup elf_cr16_reloc_name_lookup -#define elf_info_to_howto elf_cr16_info_to_howto -#define elf_info_to_howto_rel 0 -#define elf_backend_relocate_section elf32_cr16_relocate_section -#define bfd_elf32_bfd_relax_section elf32_cr16_relax_section -#define bfd_elf32_bfd_get_relocated_section_contents \ - elf32_cr16_get_relocated_section_contents -#define elf_backend_gc_mark_hook elf32_cr16_gc_mark_hook -#define elf_backend_gc_sweep_hook elf32_cr16_gc_sweep_hook -#define elf_backend_can_gc_sections 1 -#define elf_backend_rela_normal 1 -#define elf_backend_check_relocs cr16_elf_check_relocs -/* So we can set bits in e_flags. */ -#define elf_backend_final_write_processing \ - _bfd_cr16_elf_final_write_processing -#define elf_backend_object_p _bfd_cr16_elf_object_p - -#define bfd_elf32_bfd_merge_private_bfd_data \ - _bfd_cr16_elf_merge_private_bfd_data - - -#define bfd_elf32_bfd_link_hash_table_create \ - elf32_cr16_link_hash_table_create - -#define elf_backend_create_dynamic_sections \ - _bfd_cr16_elf_create_dynamic_sections -#define elf_backend_adjust_dynamic_symbol \ - _bfd_cr16_elf_adjust_dynamic_symbol -#define elf_backend_size_dynamic_sections \ - _bfd_cr16_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_cr16_elf_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections \ - _bfd_cr16_elf_finish_dynamic_sections - -#define elf_backend_reloc_type_class _bfd_cr16_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" |