diff options
Diffstat (limited to 'binutils-2.25/bfd/elf32-cr16.c')
| -rw-r--r-- | binutils-2.25/bfd/elf32-cr16.c | 2992 |
1 files changed, 2992 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/elf32-cr16.c b/binutils-2.25/bfd/elf32-cr16.c new file mode 100644 index 00000000..8ed5af1c --- /dev/null +++ b/binutils-2.25/bfd/elf32-cr16.c @@ -0,0 +1,2992 @@ +/* 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" |