| 1 | /*  MSP430-specific support for 32-bit ELF | 
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| 2 | Copyright (C) 2002 Free Software Foundation, Inc. | 
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| 3 | Contributed by Dmitry Diky <diwil@mail.ru> | 
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| 4 |  | 
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| 5 | This file is part of BFD, the Binary File Descriptor library. | 
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| 6 |  | 
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| 7 | This program is free software; you can redistribute it and/or modify | 
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| 8 | it under the terms of the GNU General Public License as published by | 
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| 9 | the Free Software Foundation; either version 2 of the License, or | 
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| 10 | (at your option) any later version. | 
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| 11 |  | 
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| 12 | This program is distributed in the hope that it will be useful, | 
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
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| 15 | GNU General Public License for more details. | 
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| 16 |  | 
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| 17 | You should have received a copy of the GNU General Public License | 
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| 18 | along with this program; if not, write to the Free Software | 
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| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */ | 
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| 20 |  | 
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| 21 | #include "bfd.h" | 
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| 22 | #include "sysdep.h" | 
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| 23 | #include "libiberty.h" | 
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| 24 | #include "libbfd.h" | 
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| 25 | #include "elf-bfd.h" | 
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| 26 | #include "elf/msp430.h" | 
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| 27 |  | 
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| 28 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | 
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| 29 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | 
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| 30 |  | 
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| 31 | static void msp430_info_to_howto_rela | 
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| 32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | 
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| 33 |  | 
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| 34 | static asection *elf32_msp430_gc_mark_hook | 
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| 35 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, | 
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| 36 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | 
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| 37 |  | 
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| 38 | static bfd_boolean elf32_msp430_gc_sweep_hook | 
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| 39 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | 
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| 40 | const Elf_Internal_Rela *)); | 
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| 41 |  | 
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| 42 | static bfd_boolean elf32_msp430_check_relocs | 
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| 43 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | 
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| 44 | const Elf_Internal_Rela *)); | 
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| 45 |  | 
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| 46 | static bfd_reloc_status_type msp430_final_link_relocate | 
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| 47 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, | 
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| 48 | Elf_Internal_Rela *, bfd_vma)); | 
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| 49 |  | 
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| 50 | static bfd_boolean elf32_msp430_relocate_section | 
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| 51 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | 
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| 52 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | 
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| 53 |  | 
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| 54 | static void bfd_elf_msp430_final_write_processing | 
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| 55 | PARAMS ((bfd *, bfd_boolean)); | 
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| 56 |  | 
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| 57 | static bfd_boolean elf32_msp430_object_p | 
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| 58 | PARAMS ((bfd *)); | 
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| 59 |  | 
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| 60 | static void elf32_msp430_post_process_headers | 
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| 61 | PARAMS ((bfd *, struct bfd_link_info *)); | 
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| 62 |  | 
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| 63 | /* Use RELA instead of REL.  */ | 
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| 64 | #undef USE_REL | 
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| 65 |  | 
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| 66 | static reloc_howto_type elf_msp430_howto_table[] = | 
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| 67 | { | 
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| 68 | HOWTO (R_MSP430_NONE,         /* type */ | 
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| 69 | 0,                     /* rightshift */ | 
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| 70 | 2,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 71 | 32,                    /* bitsize */ | 
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| 72 | FALSE,                 /* pc_relative */ | 
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| 73 | 0,                     /* bitpos */ | 
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| 74 | complain_overflow_bitfield,    /* complain_on_overflow */ | 
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| 75 | bfd_elf_generic_reloc, /* special_function */ | 
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| 76 | "R_MSP430_NONE",       /* name */ | 
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| 77 | FALSE,                 /* partial_inplace */ | 
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| 78 | 0,                     /* src_mask */ | 
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| 79 | 0,                     /* dst_mask */ | 
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| 80 | FALSE),                /* pcrel_offset */ | 
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| 81 |  | 
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| 82 | HOWTO (R_MSP430_32,           /* type */ | 
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| 83 | 0,                     /* rightshift */ | 
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| 84 | 2,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 85 | 32,                    /* bitsize */ | 
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| 86 | FALSE,                 /* pc_relative */ | 
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| 87 | 0,                     /* bitpos */ | 
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| 88 | complain_overflow_bitfield,    /* complain_on_overflow */ | 
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| 89 | bfd_elf_generic_reloc, /* special_function */ | 
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| 90 | "R_MSP430_32",         /* name */ | 
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| 91 | FALSE,                 /* partial_inplace */ | 
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| 92 | 0xffffffff,            /* src_mask */ | 
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| 93 | 0xffffffff,            /* dst_mask */ | 
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| 94 | FALSE),                /* pcrel_offset */ | 
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| 95 |  | 
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| 96 | /* A 13 bit PC relative relocation.  */ | 
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| 97 | HOWTO (R_MSP430_10_PCREL,     /* type */ | 
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| 98 | 1,                     /* rightshift */ | 
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| 99 | 1,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 100 | 10,                    /* bitsize */ | 
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| 101 | TRUE,                  /* pc_relative */ | 
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| 102 | 0,                     /* bitpos */ | 
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| 103 | complain_overflow_bitfield,    /* complain_on_overflow */ | 
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| 104 | bfd_elf_generic_reloc, /* special_function */ | 
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| 105 | "R_MSP430_13_PCREL",   /* name */ | 
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| 106 | FALSE,                 /* partial_inplace */ | 
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| 107 | 0xfff,                 /* src_mask */ | 
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| 108 | 0xfff,                 /* dst_mask */ | 
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| 109 | TRUE),                 /* pcrel_offset */ | 
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| 110 |  | 
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| 111 | /* A 16 bit absolute relocation.  */ | 
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| 112 | HOWTO (R_MSP430_16,           /* type */ | 
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| 113 | 0,                     /* rightshift */ | 
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| 114 | 1,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 115 | 16,                    /* bitsize */ | 
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| 116 | FALSE,                 /* pc_relative */ | 
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| 117 | 0,                     /* bitpos */ | 
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| 118 | complain_overflow_dont,/* complain_on_overflow */ | 
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| 119 | bfd_elf_generic_reloc, /* special_function */ | 
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| 120 | "R_MSP430_16",         /* name */ | 
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| 121 | FALSE,                 /* partial_inplace */ | 
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| 122 | 0xffff,                /* src_mask */ | 
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| 123 | 0xffff,                /* dst_mask */ | 
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| 124 | FALSE),                /* pcrel_offset */ | 
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| 125 |  | 
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| 126 | /* A 16 bit absolute relocation for command address.  */ | 
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| 127 | HOWTO (R_MSP430_16_PCREL,     /* type */ | 
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| 128 | 1,                     /* rightshift */ | 
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| 129 | 1,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 130 | 16,                    /* bitsize */ | 
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| 131 | TRUE,                  /* pc_relative */ | 
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| 132 | 0,                     /* bitpos */ | 
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| 133 | complain_overflow_dont,/* complain_on_overflow */ | 
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| 134 | bfd_elf_generic_reloc, /* special_function */ | 
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| 135 | "R_MSP430_16_PCREL",   /* name */ | 
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| 136 | FALSE,                 /* partial_inplace */ | 
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| 137 | 0xffff,                /* src_mask */ | 
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| 138 | 0xffff,                /* dst_mask */ | 
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| 139 | TRUE),                 /* pcrel_offset */ | 
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| 140 |  | 
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| 141 | /* A 16 bit absolute relocation, byte operations.  */ | 
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| 142 | HOWTO (R_MSP430_16_BYTE,      /* type */ | 
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| 143 | 0,                     /* rightshift */ | 
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| 144 | 1,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 145 | 16,                    /* bitsize */ | 
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| 146 | FALSE,                 /* pc_relative */ | 
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| 147 | 0,                     /* bitpos */ | 
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| 148 | complain_overflow_dont,/* complain_on_overflow */ | 
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| 149 | bfd_elf_generic_reloc, /* special_function */ | 
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| 150 | "R_MSP430_16_BYTE",    /* name */ | 
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| 151 | FALSE,                 /* partial_inplace */ | 
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| 152 | 0xffff,                /* src_mask */ | 
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| 153 | 0xffff,                /* dst_mask */ | 
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| 154 | FALSE),                /* pcrel_offset */ | 
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| 155 |  | 
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| 156 | /* A 16 bit absolute relocation for command address.  */ | 
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| 157 | HOWTO (R_MSP430_16_PCREL_BYTE,/* type */ | 
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| 158 | 1,                     /* rightshift */ | 
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| 159 | 1,                     /* size (0 = byte, 1 = short, 2 = long) */ | 
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| 160 | 16,                    /* bitsize */ | 
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| 161 | TRUE,                  /* pc_relative */ | 
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| 162 | 0,                     /* bitpos */ | 
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| 163 | complain_overflow_dont,/* complain_on_overflow */ | 
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| 164 | bfd_elf_generic_reloc, /* special_function */ | 
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| 165 | "R_MSP430_16_PCREL_BYTE",      /* name */ | 
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| 166 | FALSE,                 /* partial_inplace */ | 
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| 167 | 0xffff,                /* src_mask */ | 
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| 168 | 0xffff,                /* dst_mask */ | 
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| 169 | TRUE)                  /* pcrel_offset */ | 
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| 170 | }; | 
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| 171 |  | 
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| 172 | /* Map BFD reloc types to MSP430 ELF reloc types.  */ | 
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| 173 |  | 
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| 174 | struct msp430_reloc_map | 
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| 175 | { | 
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| 176 | bfd_reloc_code_real_type bfd_reloc_val; | 
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| 177 | unsigned int elf_reloc_val; | 
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| 178 | }; | 
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| 179 |  | 
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| 180 | static const struct msp430_reloc_map msp430_reloc_map[] = | 
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| 181 | { | 
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| 182 | {BFD_RELOC_NONE, R_MSP430_NONE}, | 
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| 183 | {BFD_RELOC_32, R_MSP430_32}, | 
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| 184 | {BFD_RELOC_MSP430_10_PCREL, R_MSP430_10_PCREL}, | 
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| 185 | {BFD_RELOC_16, R_MSP430_16_BYTE}, | 
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| 186 | {BFD_RELOC_MSP430_16_PCREL, R_MSP430_16_PCREL}, | 
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| 187 | {BFD_RELOC_MSP430_16, R_MSP430_16}, | 
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| 188 | {BFD_RELOC_MSP430_16_PCREL_BYTE, R_MSP430_16_PCREL_BYTE}, | 
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| 189 | {BFD_RELOC_MSP430_16_BYTE, R_MSP430_16_BYTE} | 
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| 190 | }; | 
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| 191 |  | 
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| 192 | static reloc_howto_type * | 
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| 193 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | 
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| 194 | bfd *abfd ATTRIBUTE_UNUSED; | 
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| 195 | bfd_reloc_code_real_type code; | 
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| 196 | { | 
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| 197 | unsigned int i; | 
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| 198 |  | 
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| 199 | for (i = 0; i < ARRAY_SIZE (msp430_reloc_map); i++) | 
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| 200 | if (msp430_reloc_map[i].bfd_reloc_val == code) | 
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| 201 | return &elf_msp430_howto_table[msp430_reloc_map[i].elf_reloc_val]; | 
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| 202 |  | 
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| 203 | return NULL; | 
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| 204 | } | 
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| 205 |  | 
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| 206 | /* Set the howto pointer for an MSP430 ELF reloc.  */ | 
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| 207 |  | 
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| 208 | static void | 
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| 209 | msp430_info_to_howto_rela (abfd, cache_ptr, dst) | 
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| 210 | bfd *abfd ATTRIBUTE_UNUSED; | 
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| 211 | arelent *cache_ptr; | 
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| 212 | Elf_Internal_Rela *dst; | 
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| 213 | { | 
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| 214 | unsigned int r_type; | 
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| 215 |  | 
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| 216 | r_type = ELF32_R_TYPE (dst->r_info); | 
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| 217 | BFD_ASSERT (r_type < (unsigned int) R_MSP430_max); | 
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| 218 | cache_ptr->howto = &elf_msp430_howto_table[r_type]; | 
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| 219 | } | 
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| 220 |  | 
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| 221 | static asection * | 
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| 222 | elf32_msp430_gc_mark_hook (sec, info, rel, h, sym) | 
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| 223 | asection *sec; | 
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| 224 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | 
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| 225 | Elf_Internal_Rela *rel; | 
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| 226 | struct elf_link_hash_entry *h; | 
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| 227 | Elf_Internal_Sym *sym; | 
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| 228 | { | 
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| 229 | if (h != NULL) | 
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| 230 | { | 
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| 231 | switch (ELF32_R_TYPE (rel->r_info)) | 
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| 232 | { | 
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| 233 | default: | 
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| 234 | switch (h->root.type) | 
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| 235 | { | 
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| 236 | case bfd_link_hash_defined: | 
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| 237 | case bfd_link_hash_defweak: | 
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| 238 | return h->root.u.def.section; | 
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| 239 |  | 
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| 240 | case bfd_link_hash_common: | 
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| 241 | return h->root.u.c.p->section; | 
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| 242 |  | 
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| 243 | default: | 
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| 244 | break; | 
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| 245 | } | 
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| 246 | } | 
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| 247 | } | 
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| 248 | else | 
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| 249 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); | 
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| 250 |  | 
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| 251 | return NULL; | 
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| 252 | } | 
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| 253 |  | 
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| 254 | static bfd_boolean | 
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| 255 | elf32_msp430_gc_sweep_hook (abfd, info, sec, relocs) | 
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| 256 | bfd *abfd ATTRIBUTE_UNUSED; | 
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| 257 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | 
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| 258 | asection *sec ATTRIBUTE_UNUSED; | 
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| 259 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | 
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| 260 | { | 
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| 261 | /* We don't use got and plt entries for msp430.  */ | 
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| 262 | return TRUE; | 
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| 263 | } | 
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| 264 |  | 
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| 265 | /* Look through the relocs for a section during the first phase. | 
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| 266 | Since we don't do .gots or .plts, we just need to consider the | 
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| 267 | virtual table relocs for gc.  */ | 
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| 268 |  | 
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| 269 | static bfd_boolean | 
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| 270 | elf32_msp430_check_relocs (abfd, info, sec, relocs) | 
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| 271 | bfd *abfd; | 
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| 272 | struct bfd_link_info *info; | 
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| 273 | asection *sec; | 
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| 274 | const Elf_Internal_Rela *relocs; | 
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| 275 | { | 
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| 276 | Elf_Internal_Shdr *symtab_hdr; | 
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| 277 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | 
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| 278 | const Elf_Internal_Rela *rel; | 
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| 279 | const Elf_Internal_Rela *rel_end; | 
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| 280 |  | 
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| 281 | if (info->relocateable) | 
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| 282 | return TRUE; | 
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| 283 |  | 
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| 284 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | 
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| 285 | sym_hashes = elf_sym_hashes (abfd); | 
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| 286 | sym_hashes_end = | 
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| 287 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | 
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| 288 | if (!elf_bad_symtab (abfd)) | 
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| 289 | sym_hashes_end -= symtab_hdr->sh_info; | 
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| 290 |  | 
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| 291 | rel_end = relocs + sec->reloc_count; | 
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| 292 | for (rel = relocs; rel < rel_end; rel++) | 
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| 293 | { | 
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| 294 | struct elf_link_hash_entry *h; | 
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| 295 | unsigned long r_symndx; | 
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| 296 |  | 
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| 297 | r_symndx = ELF32_R_SYM (rel->r_info); | 
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| 298 | if (r_symndx < symtab_hdr->sh_info) | 
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| 299 | h = NULL; | 
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| 300 | else | 
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| 301 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | 
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| 302 | } | 
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| 303 |  | 
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| 304 | return TRUE; | 
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| 305 | } | 
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| 306 |  | 
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| 307 | /* Perform a single relocation.  By default we use the standard BFD | 
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| 308 | routines, but a few relocs, we have to do them ourselves.  */ | 
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| 309 |  | 
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| 310 | static bfd_reloc_status_type | 
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| 311 | msp430_final_link_relocate (howto, input_bfd, input_section, | 
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| 312 | contents, rel, relocation) | 
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| 313 | reloc_howto_type *howto; | 
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| 314 | bfd *input_bfd; | 
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| 315 | asection *input_section; | 
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| 316 | bfd_byte *contents; | 
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| 317 | Elf_Internal_Rela *rel; | 
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| 318 | bfd_vma relocation; | 
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| 319 | { | 
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| 320 | bfd_reloc_status_type r = bfd_reloc_ok; | 
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| 321 | bfd_vma x; | 
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| 322 | bfd_signed_vma srel; | 
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| 323 |  | 
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| 324 | switch (howto->type) | 
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| 325 | { | 
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| 326 | case R_MSP430_10_PCREL: | 
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| 327 | contents += rel->r_offset; | 
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| 328 | srel = (bfd_signed_vma) relocation; | 
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| 329 | srel += rel->r_addend; | 
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| 330 | srel -= rel->r_offset; | 
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| 331 | srel -= 2;                /* Branch instructions add 2 to the PC...  */ | 
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| 332 | srel -= (input_section->output_section->vma + | 
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| 333 | input_section->output_offset); | 
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| 334 |  | 
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| 335 | if (srel & 1) | 
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| 336 | return bfd_reloc_outofrange; | 
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| 337 |  | 
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| 338 | /* MSP430 addresses commands as words.  */ | 
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| 339 | srel >>= 1; | 
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| 340 |  | 
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| 341 | /* Check for an overflow.  */ | 
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| 342 | if (srel < -512 || srel > 511) | 
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| 343 | return bfd_reloc_overflow; | 
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| 344 |  | 
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| 345 | x = bfd_get_16 (input_bfd, contents); | 
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| 346 | x = (x & 0xfc00) | (srel & 0x3ff); | 
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| 347 | bfd_put_16 (input_bfd, x, contents); | 
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| 348 | break; | 
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| 349 |  | 
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| 350 | case R_MSP430_16_PCREL: | 
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| 351 | contents += rel->r_offset; | 
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| 352 | srel = (bfd_signed_vma) relocation; | 
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| 353 | srel += rel->r_addend; | 
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| 354 | srel -= rel->r_offset; | 
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| 355 | /* Only branch instructions add 2 to the PC...  */ | 
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| 356 | srel -= (input_section->output_section->vma + | 
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| 357 | input_section->output_offset); | 
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| 358 |  | 
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| 359 | if (srel & 1) | 
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| 360 | return bfd_reloc_outofrange; | 
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| 361 |  | 
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| 362 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | 
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| 363 | break; | 
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| 364 |  | 
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| 365 | case R_MSP430_16_PCREL_BYTE: | 
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| 366 | contents += rel->r_offset; | 
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| 367 | srel = (bfd_signed_vma) relocation; | 
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| 368 | srel += rel->r_addend; | 
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| 369 | srel -= rel->r_offset; | 
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| 370 | /* Only branch instructions add 2 to the PC...  */ | 
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| 371 | srel -= (input_section->output_section->vma + | 
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| 372 | input_section->output_offset); | 
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| 373 |  | 
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| 374 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | 
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| 375 | break; | 
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| 376 |  | 
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| 377 | case R_MSP430_16_BYTE: | 
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| 378 | contents += rel->r_offset; | 
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| 379 | srel = (bfd_signed_vma) relocation; | 
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| 380 | srel += rel->r_addend; | 
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| 381 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | 
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| 382 | break; | 
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| 383 |  | 
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| 384 | case R_MSP430_16: | 
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| 385 | contents += rel->r_offset; | 
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| 386 | srel = (bfd_signed_vma) relocation; | 
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| 387 | srel += rel->r_addend; | 
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| 388 |  | 
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| 389 | if (srel & 1) | 
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| 390 | return bfd_reloc_notsupported; | 
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| 391 |  | 
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| 392 | bfd_put_16 (input_bfd, srel & 0xffff, contents); | 
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| 393 | break; | 
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| 394 |  | 
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| 395 | default: | 
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| 396 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | 
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| 397 | contents, rel->r_offset, | 
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| 398 | relocation, rel->r_addend); | 
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| 399 | } | 
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| 400 |  | 
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| 401 | return r; | 
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| 402 | } | 
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| 403 |  | 
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| 404 | /* Relocate an MSP430 ELF section.  */ | 
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| 405 |  | 
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| 406 | static bfd_boolean | 
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| 407 | elf32_msp430_relocate_section (output_bfd, info, input_bfd, input_section, | 
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| 408 | contents, relocs, local_syms, local_sections) | 
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| 409 | bfd *output_bfd ATTRIBUTE_UNUSED; | 
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| 410 | struct bfd_link_info *info; | 
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| 411 | bfd *input_bfd; | 
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| 412 | asection *input_section; | 
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| 413 | bfd_byte *contents; | 
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| 414 | Elf_Internal_Rela *relocs; | 
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| 415 | Elf_Internal_Sym *local_syms; | 
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| 416 | asection **local_sections; | 
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| 417 | { | 
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| 418 | Elf_Internal_Shdr *symtab_hdr; | 
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| 419 | struct elf_link_hash_entry **sym_hashes; | 
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| 420 | Elf_Internal_Rela *rel; | 
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| 421 | Elf_Internal_Rela *relend; | 
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| 422 |  | 
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| 423 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | 
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| 424 | sym_hashes = elf_sym_hashes (input_bfd); | 
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| 425 | relend = relocs + input_section->reloc_count; | 
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| 426 |  | 
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| 427 | for (rel = relocs; rel < relend; rel++) | 
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| 428 | { | 
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| 429 | reloc_howto_type *howto; | 
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| 430 | unsigned long r_symndx; | 
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| 431 | Elf_Internal_Sym *sym; | 
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| 432 | asection *sec; | 
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| 433 | struct elf_link_hash_entry *h; | 
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| 434 | bfd_vma relocation; | 
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| 435 | bfd_reloc_status_type r; | 
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| 436 | const char *name = NULL; | 
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| 437 | int r_type; | 
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| 438 |  | 
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| 439 | /* This is a final link.  */ | 
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| 440 |  | 
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| 441 | r_type = ELF32_R_TYPE (rel->r_info); | 
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| 442 | r_symndx = ELF32_R_SYM (rel->r_info); | 
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| 443 | howto = elf_msp430_howto_table + ELF32_R_TYPE (rel->r_info); | 
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| 444 | h = NULL; | 
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| 445 | sym = NULL; | 
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| 446 | sec = NULL; | 
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| 447 |  | 
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| 448 | if (r_symndx < symtab_hdr->sh_info) | 
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| 449 | { | 
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| 450 | sym = local_syms + r_symndx; | 
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| 451 | sec = local_sections[r_symndx]; | 
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| 452 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); | 
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| 453 |  | 
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| 454 | name = bfd_elf_string_from_elf_section | 
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| 455 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | 
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| 456 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | 
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| 457 | } | 
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| 458 | else | 
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| 459 | { | 
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| 460 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | 
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| 461 |  | 
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| 462 | while (h->root.type == bfd_link_hash_indirect | 
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| 463 | || h->root.type == bfd_link_hash_warning) | 
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| 464 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | 
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| 465 |  | 
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| 466 | name = h->root.root.string; | 
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| 467 |  | 
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| 468 | if (h->root.type == bfd_link_hash_defined | 
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| 469 | || h->root.type == bfd_link_hash_defweak) | 
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| 470 | { | 
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| 471 | sec = h->root.u.def.section; | 
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| 472 | relocation = (h->root.u.def.value | 
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| 473 | + sec->output_section->vma + sec->output_offset); | 
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| 474 | } | 
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| 475 | else if (h->root.type == bfd_link_hash_undefweak) | 
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| 476 | { | 
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| 477 | relocation = 0; | 
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| 478 | } | 
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| 479 | else | 
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| 480 | { | 
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| 481 | if (!((*info->callbacks->undefined_symbol) | 
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| 482 | (info, h->root.root.string, input_bfd, | 
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| 483 | input_section, rel->r_offset, TRUE))) | 
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| 484 | return FALSE; | 
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| 485 | relocation = 0; | 
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| 486 | } | 
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| 487 | } | 
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| 488 |  | 
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| 489 | r = msp430_final_link_relocate (howto, input_bfd, input_section, | 
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| 490 | contents, rel, relocation); | 
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| 491 |  | 
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| 492 | if (r != bfd_reloc_ok) | 
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| 493 | { | 
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| 494 | const char *msg = (const char *) NULL; | 
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| 495 |  | 
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| 496 | switch (r) | 
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| 497 | { | 
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| 498 | case bfd_reloc_overflow: | 
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| 499 | r = info->callbacks->reloc_overflow | 
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| 500 | (info, name, howto->name, (bfd_vma) 0, | 
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| 501 | input_bfd, input_section, rel->r_offset); | 
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| 502 | break; | 
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| 503 |  | 
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| 504 | case bfd_reloc_undefined: | 
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| 505 | r = info->callbacks->undefined_symbol | 
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| 506 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | 
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| 507 | break; | 
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| 508 |  | 
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| 509 | case bfd_reloc_outofrange: | 
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| 510 | msg = _("internal error: out of range error"); | 
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| 511 | break; | 
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| 512 |  | 
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| 513 | case bfd_reloc_notsupported: | 
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| 514 | msg = _("internal error: unsupported relocation error"); | 
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| 515 | break; | 
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| 516 |  | 
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| 517 | case bfd_reloc_dangerous: | 
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| 518 | msg = _("internal error: dangerous relocation"); | 
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| 519 | break; | 
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| 520 |  | 
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| 521 | default: | 
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| 522 | msg = _("internal error: unknown error"); | 
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| 523 | break; | 
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| 524 | } | 
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| 525 |  | 
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| 526 | if (msg) | 
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| 527 | r = info->callbacks->warning | 
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| 528 | (info, msg, name, input_bfd, input_section, rel->r_offset); | 
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| 529 |  | 
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| 530 | if (!r) | 
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| 531 | return FALSE; | 
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| 532 | } | 
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| 533 |  | 
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| 534 | } | 
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| 535 |  | 
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| 536 | return TRUE; | 
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| 537 | } | 
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| 538 |  | 
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| 539 | /* The final processing done just before writing out a MSP430 ELF object | 
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| 540 | file.  This gets the MSP430 architecture right based on the machine | 
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| 541 | number.  */ | 
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| 542 |  | 
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| 543 | static void | 
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| 544 | bfd_elf_msp430_final_write_processing (abfd, linker) | 
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| 545 | bfd *abfd; | 
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| 546 | bfd_boolean linker ATTRIBUTE_UNUSED; | 
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| 547 | { | 
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| 548 | unsigned long val; | 
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| 549 |  | 
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| 550 | switch (bfd_get_mach (abfd)) | 
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| 551 | { | 
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| 552 | default: | 
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| 553 | case bfd_mach_msp12: | 
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| 554 | val = E_MSP430_MACH_MSP430x12; | 
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| 555 | break; | 
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| 556 |  | 
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| 557 | case bfd_mach_msp110: | 
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| 558 | val = E_MSP430_MACH_MSP430x11x1; | 
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| 559 | break; | 
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| 560 |  | 
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| 561 | case bfd_mach_msp11: | 
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| 562 | val = E_MSP430_MACH_MSP430x11; | 
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| 563 | break; | 
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| 564 |  | 
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| 565 | case bfd_mach_msp13: | 
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| 566 | val = E_MSP430_MACH_MSP430x13; | 
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| 567 | break; | 
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| 568 |  | 
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| 569 | case bfd_mach_msp14: | 
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| 570 | val = E_MSP430_MACH_MSP430x14; | 
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| 571 | break; | 
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| 572 |  | 
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| 573 | case bfd_mach_msp41: | 
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| 574 | val = E_MSP430_MACH_MSP430x41; | 
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| 575 | break; | 
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| 576 |  | 
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| 577 | case bfd_mach_msp43: | 
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| 578 | val = E_MSP430_MACH_MSP430x43; | 
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| 579 | break; | 
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| 580 |  | 
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| 581 | case bfd_mach_msp44: | 
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| 582 | val = E_MSP430_MACH_MSP430x44; | 
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| 583 | break; | 
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| 584 |  | 
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| 585 | case bfd_mach_msp31: | 
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| 586 | val = E_MSP430_MACH_MSP430x31; | 
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| 587 | break; | 
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| 588 |  | 
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| 589 | case bfd_mach_msp32: | 
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| 590 | val = E_MSP430_MACH_MSP430x32; | 
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| 591 | break; | 
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| 592 |  | 
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| 593 | case bfd_mach_msp33: | 
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| 594 | val = E_MSP430_MACH_MSP430x33; | 
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| 595 | break; | 
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| 596 |  | 
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| 597 | case bfd_mach_msp15: | 
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| 598 | val = E_MSP430_MACH_MSP430x15; | 
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| 599 | break; | 
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| 600 |  | 
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| 601 | case bfd_mach_msp16: | 
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| 602 | val = E_MSP430_MACH_MSP430x16; | 
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| 603 | break; | 
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| 604 | } | 
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| 605 |  | 
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| 606 | elf_elfheader (abfd)->e_machine = EM_MSP430; | 
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| 607 | elf_elfheader (abfd)->e_flags &= ~EF_MSP430_MACH; | 
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| 608 | elf_elfheader (abfd)->e_flags |= val; | 
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| 609 | } | 
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| 610 |  | 
|---|
| 611 | /* Set the right machine number.  */ | 
|---|
| 612 |  | 
|---|
| 613 | static bfd_boolean | 
|---|
| 614 | elf32_msp430_object_p (abfd) | 
|---|
| 615 | bfd *abfd; | 
|---|
| 616 | { | 
|---|
| 617 | int e_set = bfd_mach_msp14; | 
|---|
| 618 |  | 
|---|
| 619 | if (elf_elfheader (abfd)->e_machine == EM_MSP430 | 
|---|
| 620 | || elf_elfheader (abfd)->e_machine == EM_MSP430_OLD) | 
|---|
| 621 | { | 
|---|
| 622 | int e_mach = elf_elfheader (abfd)->e_flags & EF_MSP430_MACH; | 
|---|
| 623 |  | 
|---|
| 624 | switch (e_mach) | 
|---|
| 625 | { | 
|---|
| 626 | default: | 
|---|
| 627 | case E_MSP430_MACH_MSP430x12: | 
|---|
| 628 | e_set = bfd_mach_msp12; | 
|---|
| 629 | break; | 
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| 630 |  | 
|---|
| 631 | case E_MSP430_MACH_MSP430x11: | 
|---|
| 632 | e_set = bfd_mach_msp11; | 
|---|
| 633 | break; | 
|---|
| 634 |  | 
|---|
| 635 | case E_MSP430_MACH_MSP430x11x1: | 
|---|
| 636 | e_set = bfd_mach_msp110; | 
|---|
| 637 | break; | 
|---|
| 638 |  | 
|---|
| 639 | case E_MSP430_MACH_MSP430x13: | 
|---|
| 640 | e_set = bfd_mach_msp13; | 
|---|
| 641 | break; | 
|---|
| 642 |  | 
|---|
| 643 | case E_MSP430_MACH_MSP430x14: | 
|---|
| 644 | e_set = bfd_mach_msp14; | 
|---|
| 645 | break; | 
|---|
| 646 |  | 
|---|
| 647 | case E_MSP430_MACH_MSP430x41: | 
|---|
| 648 | e_set = bfd_mach_msp41; | 
|---|
| 649 | break; | 
|---|
| 650 |  | 
|---|
| 651 | case E_MSP430_MACH_MSP430x31: | 
|---|
| 652 | e_set = bfd_mach_msp31; | 
|---|
| 653 | break; | 
|---|
| 654 |  | 
|---|
| 655 | case E_MSP430_MACH_MSP430x32: | 
|---|
| 656 | e_set = bfd_mach_msp32; | 
|---|
| 657 | break; | 
|---|
| 658 |  | 
|---|
| 659 | case E_MSP430_MACH_MSP430x33: | 
|---|
| 660 | e_set = bfd_mach_msp33; | 
|---|
| 661 | break; | 
|---|
| 662 |  | 
|---|
| 663 | case E_MSP430_MACH_MSP430x43: | 
|---|
| 664 | e_set = bfd_mach_msp43; | 
|---|
| 665 | break; | 
|---|
| 666 |  | 
|---|
| 667 | case E_MSP430_MACH_MSP430x44: | 
|---|
| 668 | e_set = bfd_mach_msp44; | 
|---|
| 669 | break; | 
|---|
| 670 |  | 
|---|
| 671 | case E_MSP430_MACH_MSP430x15: | 
|---|
| 672 | e_set = bfd_mach_msp15; | 
|---|
| 673 | break; | 
|---|
| 674 |  | 
|---|
| 675 | case E_MSP430_MACH_MSP430x16: | 
|---|
| 676 | e_set = bfd_mach_msp16; | 
|---|
| 677 | break; | 
|---|
| 678 | } | 
|---|
| 679 | } | 
|---|
| 680 |  | 
|---|
| 681 | return bfd_default_set_arch_mach (abfd, bfd_arch_msp430, e_set); | 
|---|
| 682 | } | 
|---|
| 683 |  | 
|---|
| 684 | static void | 
|---|
| 685 | elf32_msp430_post_process_headers (abfd, link_info) | 
|---|
| 686 | bfd *abfd; | 
|---|
| 687 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | 
|---|
| 688 | { | 
|---|
| 689 | Elf_Internal_Ehdr *i_ehdrp;   /* ELF file header, internal form.  */ | 
|---|
| 690 |  | 
|---|
| 691 | i_ehdrp = elf_elfheader (abfd); | 
|---|
| 692 |  | 
|---|
| 693 | #ifndef ELFOSABI_STANDALONE | 
|---|
| 694 | #define ELFOSABI_STANDALONE     255 | 
|---|
| 695 | #endif | 
|---|
| 696 |  | 
|---|
| 697 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE; | 
|---|
| 698 | } | 
|---|
| 699 |  | 
|---|
| 700 |  | 
|---|
| 701 | #define ELF_ARCH                bfd_arch_msp430 | 
|---|
| 702 | #define ELF_MACHINE_CODE        EM_MSP430 | 
|---|
| 703 | #define ELF_MACHINE_ALT1        EM_MSP430_OLD | 
|---|
| 704 | #define ELF_MAXPAGESIZE         1 | 
|---|
| 705 |  | 
|---|
| 706 | #define TARGET_LITTLE_SYM       bfd_elf32_msp430_vec | 
|---|
| 707 | #define TARGET_LITTLE_NAME      "elf32-msp430" | 
|---|
| 708 |  | 
|---|
| 709 | #define elf_info_to_howto                    msp430_info_to_howto_rela | 
|---|
| 710 | #define elf_info_to_howto_rel                NULL | 
|---|
| 711 | #define elf_backend_relocate_section         elf32_msp430_relocate_section | 
|---|
| 712 | #define elf_backend_gc_mark_hook             elf32_msp430_gc_mark_hook | 
|---|
| 713 | #define elf_backend_gc_sweep_hook            elf32_msp430_gc_sweep_hook | 
|---|
| 714 | #define elf_backend_check_relocs             elf32_msp430_check_relocs | 
|---|
| 715 | #define elf_backend_can_gc_sections          1 | 
|---|
| 716 | #define elf_backend_final_write_processing   bfd_elf_msp430_final_write_processing | 
|---|
| 717 | #define elf_backend_object_p                 elf32_msp430_object_p | 
|---|
| 718 | #define elf_backend_post_process_headers     elf32_msp430_post_process_headers | 
|---|
| 719 |  | 
|---|
| 720 | #include "elf32-target.h" | 
|---|