5582a08852
* elf32-arm.c (elf32_arm_check_relocs): Likewise. * elf32-avr.c (elf32_avr_check_relocs): Likewise. * elf32-bfin.c (bfinfdpic_check_relocs): Likewise. * elf32-cris.c (cris_elf_check_relocs): Likewise. * elf32-d10v.c (elf32_d10v_check_relocs): Likewise. * elf32-dlx.c (elf32_dlx_check_relocs): Likewise. * elf32-fr30.c (fr30_elf_check_relocs): Likewise. * elf32-frv.c (_frvfdpic_check_discarded_relocs): Likewise. (elf32_frv_check_relocs): Likewise. * elf32-iq2000.c (iq2000_elf_check_relocs): Likewise. * elf32-m32c.c (m32c_elf_check_relocs): Likewise. * elf32-m32r.c (m32r_elf_check_relocs): Likewise. * elf32-m68hc1x.c (elf32_m68hc11_check_relocs): Likewise. * elf32-mcore.c (mcore_elf_check_relocs): Likewise. * elf32-msp430.c (elf32_msp430_check_relocs): Likewise. * elf32-mt.c (mt_elf_check_relocs): Likewise. * elf32-openrisc.c (openrisc_elf_check_relocs): Likewise. * elf32-sh.c (sh_elf_check_relocs): Likewise. * elf64-mmix.c (mmix_elf_check_relocs): Likewise. * elf64-sh64.c (sh_elf64_check_relocs): Likewise. * elf32-score.c (_bfd_score_elf_check_relocs): Likewise. (score_elf_local_relocation_p): Likewise. (_bfd_score_elf_relocate_section): Likewise. (score_elf_final_link_relocate): Likewise.
561 lines
16 KiB
C
561 lines
16 KiB
C
/* D10V-specific support for 32-bit ELF
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Copyright 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
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2007 Free Software Foundation, Inc.
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Contributed by Martin Hunt (hunt@cygnus.com).
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/d10v.h"
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/* Use REL instead of RELA to save space. */
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#define USE_REL 1
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static reloc_howto_type elf_d10v_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_D10V_NONE, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_NONE", /* Name. */
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FALSE, /* Partial_inplace. */
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0, /* Src_mask. */
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0, /* Dst_mask. */
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FALSE), /* PCrel_offset. */
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/* An PC Relative 10-bit relocation, shifted by 2, right container. */
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HOWTO (R_D10V_10_PCREL_R, /* Type. */
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2, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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8, /* Bitsize. */
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TRUE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_signed, /* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_10_PCREL_R", /* Name. */
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FALSE, /* Partial_inplace. */
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0xff, /* Src_mask. */
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0xff, /* Dst_mask. */
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TRUE), /* PCrel_offset. */
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/* An PC Relative 10-bit relocation, shifted by 2, left container. */
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HOWTO (R_D10V_10_PCREL_L, /* Type. */
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2, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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8, /* Bitsize. */
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TRUE, /* PC_relative. */
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15, /* Bitpos. */
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complain_overflow_signed, /* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_10_PCREL_L", /* Name. */
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FALSE, /* Partial_inplace. */
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0x07f8000, /* Src_mask. */
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0x07f8000, /* Dst_mask. */
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TRUE), /* PCrel_offset. */
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/* A 16 bit absolute relocation. */
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HOWTO (R_D10V_16, /* Type. */
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0, /* Rightshift. */
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1, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_16", /* Name. */
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FALSE, /* Partial_inplace. */
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0xffff, /* Src_mask. */
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0xffff, /* Dst_mask. */
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FALSE), /* PCrel_offset. */
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/* An 18 bit absolute relocation, right shifted 2. */
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HOWTO (R_D10V_18, /* Type. */
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2, /* Rightshift. */
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1, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont, /* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_18", /* Name. */
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FALSE, /* Partial_inplace. */
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0xffff, /* Src_mask. */
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0xffff, /* Dst_mask. */
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FALSE), /* PCrel_offset. */
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/* A relative 18 bit relocation, right shifted by 2. */
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HOWTO (R_D10V_18_PCREL, /* Type. */
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2, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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16, /* Bitsize. */
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TRUE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_signed, /* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_18_PCREL", /* Name. */
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FALSE, /* Partial_inplace. */
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0xffff, /* Src_mask. */
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0xffff, /* Dst_mask. */
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TRUE), /* PCrel_offset. */
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/* A 32 bit absolute relocation. */
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HOWTO (R_D10V_32, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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32, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain_on_overflow. */
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bfd_elf_generic_reloc, /* Special_function. */
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"R_D10V_32", /* Name. */
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FALSE, /* Partial_inplace. */
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0xffffffff, /* Src_mask. */
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0xffffffff, /* Dst_mask. */
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FALSE), /* PCrel_offset. */
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_D10V_GNU_VTINHERIT, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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0, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain_on_overflow. */
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NULL, /* Special_function. */
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"R_D10V_GNU_VTINHERIT",/* Name. */
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FALSE, /* Partial_inplace. */
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0, /* Src_mask. */
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0, /* Dst_mask. */
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FALSE), /* PCrel_offset. */
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/* GNU extension to record C++ vtable member usage. */
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HOWTO (R_D10V_GNU_VTENTRY, /* Type. */
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0, /* Rightshift. */
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2, /* Size (0 = byte, 1 = short, 2 = long). */
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0, /* Bitsize. */
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FALSE, /* PC_relative. */
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0, /* Bitpos. */
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complain_overflow_dont,/* Complain_on_overflow. */
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_bfd_elf_rel_vtable_reloc_fn, /* Special_function. */
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"R_D10V_GNU_VTENTRY", /* Name. */
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FALSE, /* Partial_inplace. */
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0, /* Src_mask. */
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0, /* Dst_mask. */
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FALSE), /* PCrel_offset. */
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};
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/* Map BFD reloc types to D10V ELF reloc types. */
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struct d10v_reloc_map
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{
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bfd_reloc_code_real_type bfd_reloc_val;
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unsigned char elf_reloc_val;
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};
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static const struct d10v_reloc_map d10v_reloc_map[] =
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{
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{ BFD_RELOC_NONE, R_D10V_NONE, },
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{ BFD_RELOC_D10V_10_PCREL_R, R_D10V_10_PCREL_R },
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{ BFD_RELOC_D10V_10_PCREL_L, R_D10V_10_PCREL_L },
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{ BFD_RELOC_16, R_D10V_16 },
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{ BFD_RELOC_D10V_18, R_D10V_18 },
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{ BFD_RELOC_D10V_18_PCREL, R_D10V_18_PCREL },
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{ BFD_RELOC_32, R_D10V_32 },
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{ BFD_RELOC_VTABLE_INHERIT, R_D10V_GNU_VTINHERIT },
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{ BFD_RELOC_VTABLE_ENTRY, R_D10V_GNU_VTENTRY },
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};
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static reloc_howto_type *
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bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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{
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unsigned int i;
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for (i = 0;
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i < sizeof (d10v_reloc_map) / sizeof (struct d10v_reloc_map);
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i++)
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if (d10v_reloc_map[i].bfd_reloc_val == code)
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return &elf_d10v_howto_table[d10v_reloc_map[i].elf_reloc_val];
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return NULL;
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}
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static reloc_howto_type *
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bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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const char *r_name)
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{
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unsigned int i;
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for (i = 0;
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i < sizeof (elf_d10v_howto_table) / sizeof (elf_d10v_howto_table[0]);
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i++)
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if (elf_d10v_howto_table[i].name != NULL
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&& strcasecmp (elf_d10v_howto_table[i].name, r_name) == 0)
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return &elf_d10v_howto_table[i];
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return NULL;
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}
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/* Set the howto pointer for an D10V ELF reloc. */
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static void
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d10v_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *cache_ptr,
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Elf_Internal_Rela *dst)
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{
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unsigned int r_type;
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r_type = ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (r_type < (unsigned int) R_D10V_max);
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cache_ptr->howto = &elf_d10v_howto_table[r_type];
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}
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static asection *
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elf32_d10v_gc_mark_hook (asection *sec,
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struct bfd_link_info *info,
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Elf_Internal_Rela *rel,
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struct elf_link_hash_entry *h,
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Elf_Internal_Sym *sym)
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{
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if (h != NULL)
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switch (ELF32_R_TYPE (rel->r_info))
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{
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case R_D10V_GNU_VTINHERIT:
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case R_D10V_GNU_VTENTRY:
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return NULL;
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}
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return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
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}
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/* Look through the relocs for a section during the first phase.
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Since we don't do .gots or .plts, we just need to consider the
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virtual table relocs for gc. */
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static bfd_boolean
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elf32_d10v_check_relocs (bfd *abfd,
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struct bfd_link_info *info,
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asection *sec,
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const Elf_Internal_Rela *relocs)
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{
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Elf_Internal_Shdr *symtab_hdr;
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struct elf_link_hash_entry **sym_hashes;
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const Elf_Internal_Rela *rel;
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const Elf_Internal_Rela *rel_end;
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if (info->relocatable)
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return TRUE;
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symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
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sym_hashes = elf_sym_hashes (abfd);
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rel_end = relocs + sec->reloc_count;
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for (rel = relocs; rel < rel_end; rel++)
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{
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struct elf_link_hash_entry *h;
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unsigned long r_symndx;
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r_symndx = ELF32_R_SYM (rel->r_info);
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if (r_symndx < symtab_hdr->sh_info)
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h = NULL;
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else
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{
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h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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while (h->root.type == bfd_link_hash_indirect
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|| h->root.type == bfd_link_hash_warning)
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h = (struct elf_link_hash_entry *) h->root.u.i.link;
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}
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switch (ELF32_R_TYPE (rel->r_info))
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{
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/* This relocation describes the C++ object vtable hierarchy.
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Reconstruct it for later use during GC. */
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case R_D10V_GNU_VTINHERIT:
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if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
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return FALSE;
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break;
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/* This relocation describes which C++ vtable entries are actually
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used. Record for later use during GC. */
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case R_D10V_GNU_VTENTRY:
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BFD_ASSERT (h != NULL);
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if (h != NULL
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&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
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return FALSE;
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break;
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}
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}
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return TRUE;
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}
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static bfd_vma
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extract_rel_addend (bfd *abfd,
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bfd_byte *where,
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reloc_howto_type *howto)
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{
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bfd_vma insn, val;
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switch (howto->size)
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{
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case 0:
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insn = bfd_get_8 (abfd, where);
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break;
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case 1:
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insn = bfd_get_16 (abfd, where);
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break;
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case 2:
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insn = bfd_get_32 (abfd, where);
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break;
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default:
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abort ();
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}
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val = (insn & howto->dst_mask) >> howto->bitpos << howto->rightshift;
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/* We should really be testing for signed addends here, but we don't
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have that info directly in the howto. */
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if (howto->pc_relative)
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{
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bfd_vma sign;
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sign = howto->dst_mask & (~howto->dst_mask >> 1 | ~(-(bfd_vma) 1 >> 1));
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sign = sign >> howto->bitpos << howto->rightshift;
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val = (val ^ sign) - sign;
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}
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return val;
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}
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static void
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insert_rel_addend (bfd *abfd,
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bfd_byte *where,
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reloc_howto_type *howto,
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bfd_vma addend)
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{
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bfd_vma insn;
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addend = (addend >> howto->rightshift << howto->bitpos) & howto->dst_mask;
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insn = ~howto->dst_mask;
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switch (howto->size)
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{
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case 0:
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insn &= bfd_get_8 (abfd, where);
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insn |= addend;
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bfd_put_8 (abfd, insn, where);
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break;
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case 1:
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insn &= bfd_get_16 (abfd, where);
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insn |= addend;
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bfd_put_16 (abfd, insn, where);
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break;
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case 2:
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insn &= bfd_get_32 (abfd, where);
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insn |= addend;
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bfd_put_32 (abfd, insn, where);
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break;
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default:
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abort ();
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}
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}
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/* Relocate a D10V ELF section. */
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static bfd_boolean
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elf32_d10v_relocate_section (bfd *output_bfd,
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struct bfd_link_info *info,
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bfd *input_bfd,
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asection *input_section,
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bfd_byte *contents,
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Elf_Internal_Rela *relocs,
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Elf_Internal_Sym *local_syms,
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asection **local_sections)
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{
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Elf_Internal_Shdr *symtab_hdr;
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struct elf_link_hash_entry **sym_hashes;
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Elf_Internal_Rela *rel, *relend;
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const char *name;
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symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
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sym_hashes = elf_sym_hashes (input_bfd);
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rel = relocs;
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relend = relocs + input_section->reloc_count;
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for (; rel < relend; rel++)
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{
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int r_type;
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reloc_howto_type *howto;
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unsigned long r_symndx;
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Elf_Internal_Sym *sym;
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asection *sec;
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struct elf_link_hash_entry *h;
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bfd_vma relocation;
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bfd_reloc_status_type r;
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r_symndx = ELF32_R_SYM (rel->r_info);
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r_type = ELF32_R_TYPE (rel->r_info);
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if (r_type == R_D10V_GNU_VTENTRY
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|| r_type == R_D10V_GNU_VTINHERIT)
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continue;
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howto = elf_d10v_howto_table + r_type;
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h = NULL;
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sym = NULL;
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sec = NULL;
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if (r_symndx < symtab_hdr->sh_info)
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{
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sym = local_syms + r_symndx;
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sec = local_sections[r_symndx];
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relocation = (sec->output_section->vma
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+ sec->output_offset
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+ sym->st_value);
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if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
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&& ((sec->flags & SEC_MERGE) != 0
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|| (info->relocatable
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&& sec->output_offset != 0)))
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{
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bfd_vma addend;
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bfd_byte *where = contents + rel->r_offset;
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addend = extract_rel_addend (input_bfd, where, howto);
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if (info->relocatable)
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addend += sec->output_offset;
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|
else
|
|
{
|
|
asection *msec = sec;
|
|
addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
|
|
addend);
|
|
addend -= relocation;
|
|
addend += msec->output_section->vma + msec->output_offset;
|
|
}
|
|
insert_rel_addend (input_bfd, where, howto, addend);
|
|
}
|
|
}
|
|
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 && elf_discarded_section (sec))
|
|
{
|
|
/* For relocs against symbols from removed linkonce sections,
|
|
or sections discarded by a linker script, we just want the
|
|
section contents zeroed. Avoid any special processing. */
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
|
rel->r_info = 0;
|
|
rel->r_addend = 0;
|
|
continue;
|
|
}
|
|
|
|
if (info->relocatable)
|
|
continue;
|
|
|
|
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);
|
|
}
|
|
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
|
contents, rel->r_offset,
|
|
relocation, (bfd_vma) 0);
|
|
|
|
if (r != bfd_reloc_ok)
|
|
{
|
|
const char * msg = (const char *) 0;
|
|
|
|
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;
|
|
}
|
|
#define ELF_ARCH bfd_arch_d10v
|
|
#define ELF_MACHINE_CODE EM_D10V
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_D10V
|
|
#define ELF_MAXPAGESIZE 0x1000
|
|
|
|
#define TARGET_BIG_SYM bfd_elf32_d10v_vec
|
|
#define TARGET_BIG_NAME "elf32-d10v"
|
|
|
|
#define elf_info_to_howto 0
|
|
#define elf_info_to_howto_rel d10v_info_to_howto_rel
|
|
#define elf_backend_object_p 0
|
|
#define elf_backend_final_write_processing 0
|
|
#define elf_backend_gc_mark_hook elf32_d10v_gc_mark_hook
|
|
#define elf_backend_check_relocs elf32_d10v_check_relocs
|
|
#define elf_backend_relocate_section elf32_d10v_relocate_section
|
|
#define elf_backend_can_gc_sections 1
|
|
|
|
#include "elf32-target.h"
|