2840 lines
80 KiB
C
2840 lines
80 KiB
C
/* ADI Blackfin BFD support for 32-bit ELF.
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Copyright 2005, 2006 Free Software Foundation, Inc.
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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 2 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, MA 02110-1301,
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USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/bfin.h"
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/* Handling expression relocations for blackfin. Blackfin
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will generate relocations in an expression form with a stack.
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A relocation such as P1.H = _typenames-4000000;
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will generate the following relocs at offset 4:
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00000004 R_expst_push _typenames
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00000004 R_expst_const .__constant
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00000004 R_expst_sub .__operator
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00000006 R_huimm16 .__operator
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The .__constant and .__operator symbol names are fake.
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Special case is a single relocation
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P1.L = _typenames; generates
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00000002 R_luimm16 _typenames
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Thus, if you get a R_luimm16, R_huimm16, R_imm16,
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if the stack is not empty, pop the stack and
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put the value, else do the normal thing
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We will currently assume that the max the stack
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would grow to is 100. . */
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#define RELOC_STACK_SIZE 100
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static bfd_vma reloc_stack[RELOC_STACK_SIZE];
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static unsigned int reloc_stack_tos = 0;
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#define is_reloc_stack_empty() ((reloc_stack_tos > 0) ? 0 : 1)
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static void
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reloc_stack_push (bfd_vma value)
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{
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reloc_stack[reloc_stack_tos++] = value;
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}
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static bfd_vma
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reloc_stack_pop (void)
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{
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return reloc_stack[--reloc_stack_tos];
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}
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static bfd_vma
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reloc_stack_operate (unsigned int oper)
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{
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bfd_vma value;
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switch (oper)
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{
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case R_add:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] + reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_sub:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] - reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_mult:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] * reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_div:
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{
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if (reloc_stack[reloc_stack_tos - 1] == 0)
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{
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_bfd_abort (__FILE__, __LINE__, _("Division by zero. "));
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}
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else
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{
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value =
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reloc_stack[reloc_stack_tos - 2] / reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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}
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break;
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}
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case R_mod:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] % reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_lshift:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] << reloc_stack[reloc_stack_tos -
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1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_rshift:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] >> reloc_stack[reloc_stack_tos -
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1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_and:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] & reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_or:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] | reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_xor:
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{
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value =
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reloc_stack[reloc_stack_tos - 2] ^ reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_land:
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{
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value = reloc_stack[reloc_stack_tos - 2]
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&& reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_lor:
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{
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value = reloc_stack[reloc_stack_tos - 2]
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|| reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 2;
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break;
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}
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case R_neg:
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{
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value = -reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos--;
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break;
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}
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case R_comp:
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{
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value = ~reloc_stack[reloc_stack_tos - 1];
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reloc_stack_tos -= 1;
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break;
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}
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default:
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{
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fprintf (stderr, "bfin relocation : Internal bug\n");
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return 0;
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}
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}
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reloc_stack_push (value);
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return value;
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}
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/* FUNCTION : bfin_pltpc_reloc
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ABSTRACT : TODO : figure out how to handle pltpc relocs. */
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static bfd_reloc_status_type
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bfin_pltpc_reloc (
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bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry ATTRIBUTE_UNUSED,
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asymbol *symbol ATTRIBUTE_UNUSED,
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PTR data ATTRIBUTE_UNUSED,
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asection *input_section ATTRIBUTE_UNUSED,
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bfd *output_bfd ATTRIBUTE_UNUSED,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_reloc_status_type flag = bfd_reloc_ok;
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return flag;
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}
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static bfd_reloc_status_type
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bfin_pcrel24_reloc (bfd *abfd,
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arelent *reloc_entry,
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asymbol *symbol,
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PTR data,
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asection *input_section,
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bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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bfd_vma relocation;
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bfd_size_type addr = reloc_entry->address;
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bfd_vma output_base = 0;
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reloc_howto_type *howto = reloc_entry->howto;
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asection *output_section;
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bfd_boolean relocatable = (output_bfd != NULL);
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if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
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return bfd_reloc_outofrange;
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if (!is_reloc_stack_empty ())
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relocation = reloc_stack_pop();
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else
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{
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if (bfd_is_und_section (symbol->section)
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&& (symbol->flags & BSF_WEAK) == 0
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&& !relocatable)
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return bfd_reloc_undefined;
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if (bfd_is_com_section (symbol->section))
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relocation = 0;
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else
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relocation = symbol->value;
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output_section = symbol->section->output_section;
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if (relocatable)
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output_base = 0;
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else
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output_base = output_section->vma;
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if (!relocatable || !strcmp (symbol->name, symbol->section->name))
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relocation += output_base + symbol->section->output_offset;
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if (!relocatable && !strcmp (symbol->name, symbol->section->name))
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relocation += reloc_entry->addend;
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}
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relocation -= input_section->output_section->vma + input_section->output_offset;
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relocation -= reloc_entry->address;
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if (howto->complain_on_overflow != complain_overflow_dont)
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{
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bfd_reloc_status_type status;
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status= bfd_check_overflow (howto->complain_on_overflow,
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howto->bitsize,
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howto->rightshift,
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bfd_arch_bits_per_address(abfd),
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relocation);
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if (status != bfd_reloc_ok)
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return status;
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}
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/* if rightshift is 1 and the number odd, return error. */
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if (howto->rightshift && (relocation & 0x01))
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{
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fprintf(stderr, "relocation should be even number\n");
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return bfd_reloc_overflow;
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}
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relocation >>= (bfd_vma) howto->rightshift;
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/* Shift everything up to where it's going to be used. */
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relocation <<= (bfd_vma) howto->bitpos;
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if (relocatable)
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{
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reloc_entry->address += input_section->output_offset;
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reloc_entry->addend += symbol->section->output_offset;
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}
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{
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short x;
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/* We are getting reloc_entry->address 2 byte off from
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the start of instruction. Assuming absolute postion
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of the reloc data. But, following code had been written assuming
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reloc address is starting at begining of instruction.
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To compensate that I have increased the value of
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relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
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relocation += 1;
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x = bfd_get_16 (abfd, (bfd_byte *) data + addr - 2);
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x = (x & 0xff00) | ((relocation >> 16) & 0xff);
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bfd_put_16 (abfd, x, (unsigned char *) data + addr - 2);
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x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
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x = relocation & 0xFFFF;
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bfd_put_16 (abfd, x, (unsigned char *) data + addr );
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}
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return bfd_reloc_ok;
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}
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static bfd_reloc_status_type
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bfin_push_reloc (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry,
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asymbol *symbol,
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||
PTR data ATTRIBUTE_UNUSED,
|
||
asection *input_section,
|
||
bfd *output_bfd,
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||
char **error_message ATTRIBUTE_UNUSED)
|
||
{
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||
bfd_vma relocation;
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bfd_vma output_base = 0;
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||
asection *output_section;
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||
bfd_boolean relocatable = (output_bfd != NULL);
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||
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& (symbol->flags & BSF_WEAK) == 0
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||
&& !relocatable)
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||
return bfd_reloc_undefined;
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||
|
||
/* Is the address of the relocation really within the section? */
|
||
if (reloc_entry->address > bfd_get_section_limit(abfd, input_section))
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||
return bfd_reloc_outofrange;
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||
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||
output_section = symbol->section->output_section;
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||
relocation = symbol->value;
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||
|
||
/* Convert input-section-relative symbol value to absolute. */
|
||
if (relocatable)
|
||
output_base = 0;
|
||
else
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||
output_base = output_section->vma;
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||
|
||
if (!relocatable || !strcmp(symbol->name, symbol->section->name))
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||
relocation += output_base + symbol->section->output_offset;
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||
|
||
/* Add in supplied addend. */
|
||
relocation += reloc_entry->addend;
|
||
|
||
if (relocatable)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
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||
reloc_entry->addend += symbol->section->output_offset;
|
||
}
|
||
|
||
/* Now that we have the value, push it. */
|
||
reloc_stack_push (relocation);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
bfin_oper_reloc (bfd *abfd ATTRIBUTE_UNUSED,
|
||
arelent *reloc_entry,
|
||
asymbol *symbol ATTRIBUTE_UNUSED,
|
||
PTR data ATTRIBUTE_UNUSED,
|
||
asection *input_section,
|
||
bfd *output_bfd,
|
||
char **error_message ATTRIBUTE_UNUSED)
|
||
{
|
||
bfd_boolean relocatable = (output_bfd != NULL);
|
||
|
||
/* Just call the operation based on the reloc_type. */
|
||
reloc_stack_operate (reloc_entry->howto->type);
|
||
|
||
if (relocatable)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
bfin_const_reloc (bfd *abfd ATTRIBUTE_UNUSED,
|
||
arelent *reloc_entry,
|
||
asymbol *symbol ATTRIBUTE_UNUSED,
|
||
PTR data ATTRIBUTE_UNUSED,
|
||
asection *input_section,
|
||
bfd *output_bfd,
|
||
char **error_message ATTRIBUTE_UNUSED)
|
||
{
|
||
bfd_boolean relocatable = (output_bfd != NULL);
|
||
|
||
/* Push the addend portion of the relocation. */
|
||
reloc_stack_push (reloc_entry->addend);
|
||
|
||
if (relocatable)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
bfin_imm16_reloc (bfd *abfd,
|
||
arelent *reloc_entry,
|
||
asymbol *symbol,
|
||
PTR data,
|
||
asection *input_section,
|
||
bfd *output_bfd,
|
||
char **error_message ATTRIBUTE_UNUSED)
|
||
{
|
||
bfd_vma relocation, x;
|
||
bfd_size_type reloc_addr = reloc_entry->address;
|
||
bfd_vma output_base = 0;
|
||
reloc_howto_type *howto = reloc_entry->howto;
|
||
asection *output_section;
|
||
bfd_boolean relocatable = (output_bfd != NULL);
|
||
|
||
/* Is the address of the relocation really within the section? */
|
||
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
||
return bfd_reloc_outofrange;
|
||
|
||
if (is_reloc_stack_empty ())
|
||
{
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& (symbol->flags & BSF_WEAK) == 0
|
||
&& !relocatable)
|
||
return bfd_reloc_undefined;
|
||
|
||
output_section = symbol->section->output_section;
|
||
relocation = symbol->value;
|
||
|
||
/* Convert input-section-relative symbol value to absolute. */
|
||
if (relocatable)
|
||
output_base = 0;
|
||
else
|
||
output_base = output_section->vma;
|
||
|
||
if (!relocatable || !strcmp (symbol->name, symbol->section->name))
|
||
relocation += output_base + symbol->section->output_offset;
|
||
|
||
/* Add in supplied addend. */
|
||
relocation += reloc_entry->addend;
|
||
}
|
||
else
|
||
{
|
||
relocation = reloc_stack_pop ();
|
||
}
|
||
|
||
if (relocatable)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
reloc_entry->addend += symbol->section->output_offset;
|
||
}
|
||
else
|
||
{
|
||
reloc_entry->addend = 0;
|
||
}
|
||
|
||
if (howto->complain_on_overflow != complain_overflow_dont)
|
||
{
|
||
bfd_reloc_status_type flag;
|
||
flag = bfd_check_overflow (howto->complain_on_overflow,
|
||
howto->bitsize,
|
||
howto->rightshift,
|
||
bfd_arch_bits_per_address(abfd),
|
||
relocation);
|
||
if (flag != bfd_reloc_ok)
|
||
return flag;
|
||
}
|
||
|
||
|
||
/* Here the variable relocation holds the final address of the
|
||
symbol we are relocating against, plus any addend. */
|
||
|
||
relocation >>= (bfd_vma) howto->rightshift;
|
||
x = relocation;
|
||
bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr);
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
|
||
static bfd_reloc_status_type
|
||
bfin_byte4_reloc (bfd *abfd,
|
||
arelent *reloc_entry,
|
||
asymbol *symbol,
|
||
PTR data,
|
||
asection *input_section,
|
||
bfd *output_bfd,
|
||
char **error_message ATTRIBUTE_UNUSED)
|
||
{
|
||
bfd_vma relocation, x;
|
||
bfd_size_type addr = reloc_entry->address;
|
||
bfd_vma output_base = 0;
|
||
asection *output_section;
|
||
bfd_boolean relocatable = (output_bfd != NULL);
|
||
|
||
/* Is the address of the relocation really within the section? */
|
||
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
||
return bfd_reloc_outofrange;
|
||
|
||
if (is_reloc_stack_empty ())
|
||
{
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& (symbol->flags & BSF_WEAK) == 0
|
||
&& !relocatable)
|
||
return bfd_reloc_undefined;
|
||
|
||
output_section = symbol->section->output_section;
|
||
relocation = symbol->value;
|
||
/* Convert input-section-relative symbol value to absolute. */
|
||
if (relocatable)
|
||
output_base = 0;
|
||
else
|
||
output_base = output_section->vma;
|
||
|
||
if ((symbol->name
|
||
&& symbol->section->name
|
||
&& !strcmp (symbol->name, symbol->section->name))
|
||
|| !relocatable)
|
||
{
|
||
relocation += output_base + symbol->section->output_offset;
|
||
}
|
||
|
||
relocation += reloc_entry->addend;
|
||
}
|
||
else
|
||
{
|
||
relocation = reloc_stack_pop();
|
||
relocation += reloc_entry->addend;
|
||
}
|
||
|
||
if (relocatable)
|
||
{
|
||
/* This output will be relocatable ... like ld -r. */
|
||
reloc_entry->address += input_section->output_offset;
|
||
reloc_entry->addend += symbol->section->output_offset;
|
||
}
|
||
else
|
||
{
|
||
reloc_entry->addend = 0;
|
||
}
|
||
|
||
/* Here the variable relocation holds the final address of the
|
||
symbol we are relocating against, plus any addend. */
|
||
x = relocation & 0xFFFF0000;
|
||
x >>=16;
|
||
bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2);
|
||
|
||
x = relocation & 0x0000FFFF;
|
||
bfd_put_16 (abfd, x, (unsigned char *) data + addr);
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* bfin_bfd_reloc handles the blackfin arithmetic relocations.
|
||
Use this instead of bfd_perform_relocation. */
|
||
static bfd_reloc_status_type
|
||
bfin_bfd_reloc (bfd *abfd,
|
||
arelent *reloc_entry,
|
||
asymbol *symbol,
|
||
PTR data,
|
||
asection *input_section,
|
||
bfd *output_bfd,
|
||
char **error_message ATTRIBUTE_UNUSED)
|
||
{
|
||
bfd_vma relocation;
|
||
bfd_size_type addr = reloc_entry->address;
|
||
bfd_vma output_base = 0;
|
||
reloc_howto_type *howto = reloc_entry->howto;
|
||
asection *output_section;
|
||
bfd_boolean relocatable = (output_bfd != NULL);
|
||
|
||
/* Is the address of the relocation really within the section? */
|
||
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
||
return bfd_reloc_outofrange;
|
||
|
||
if (is_reloc_stack_empty())
|
||
{
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& (symbol->flags & BSF_WEAK) == 0
|
||
&& !relocatable)
|
||
return bfd_reloc_undefined;
|
||
|
||
/* Get symbol value. (Common symbols are special.) */
|
||
if (bfd_is_com_section (symbol->section))
|
||
relocation = 0;
|
||
else
|
||
relocation = symbol->value;
|
||
|
||
output_section = symbol->section->output_section;
|
||
|
||
/* Convert input-section-relative symbol value to absolute. */
|
||
if (relocatable)
|
||
output_base = 0;
|
||
else
|
||
output_base = output_section->vma;
|
||
|
||
if (!relocatable || !strcmp (symbol->name, symbol->section->name))
|
||
relocation += output_base + symbol->section->output_offset;
|
||
|
||
if (!relocatable && !strcmp (symbol->name, symbol->section->name))
|
||
{
|
||
/* Add in supplied addend. */
|
||
relocation += reloc_entry->addend;
|
||
}
|
||
|
||
}
|
||
else
|
||
{
|
||
relocation = reloc_stack_pop();
|
||
}
|
||
|
||
/* Here the variable relocation holds the final address of the
|
||
symbol we are relocating against, plus any addend. */
|
||
|
||
if (howto->pc_relative == TRUE)
|
||
{
|
||
relocation -= input_section->output_section->vma + input_section->output_offset;
|
||
|
||
if (howto->pcrel_offset == TRUE)
|
||
relocation -= reloc_entry->address;
|
||
}
|
||
|
||
if (relocatable)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
reloc_entry->addend += symbol->section->output_offset;
|
||
}
|
||
|
||
if (howto->complain_on_overflow != complain_overflow_dont)
|
||
{
|
||
bfd_reloc_status_type status;
|
||
|
||
status = bfd_check_overflow (howto->complain_on_overflow,
|
||
howto->bitsize,
|
||
howto->rightshift,
|
||
bfd_arch_bits_per_address(abfd),
|
||
relocation);
|
||
if (status != bfd_reloc_ok)
|
||
return status;
|
||
}
|
||
|
||
/* If rightshift is 1 and the number odd, return error. */
|
||
if (howto->rightshift && (relocation & 0x01))
|
||
{
|
||
fprintf(stderr, "relocation should be even number\n");
|
||
return bfd_reloc_overflow;
|
||
}
|
||
|
||
relocation >>= (bfd_vma) howto->rightshift;
|
||
|
||
/* Shift everything up to where it's going to be used. */
|
||
|
||
relocation <<= (bfd_vma) howto->bitpos;
|
||
|
||
#define DOIT(x) \
|
||
x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask))
|
||
|
||
/* handle 8 and 16 bit relocations here. */
|
||
switch (howto->size)
|
||
{
|
||
case 0:
|
||
{
|
||
char x = bfd_get_8 (abfd, (char *) data + addr);
|
||
DOIT (x);
|
||
bfd_put_8 (abfd, x, (unsigned char *) data + addr);
|
||
}
|
||
break;
|
||
|
||
case 1:
|
||
{
|
||
unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
|
||
DOIT (x);
|
||
bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
return bfd_reloc_other;
|
||
}
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
#if 0
|
||
static bfd_reloc_status_type bfin_bfd_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_imm16_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_pcrel24_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_pltpc_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_const_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_oper_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_byte4_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_reloc_status_type bfin_push_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
|
||
static bfd_boolean bfin_is_local_label_name
|
||
PARAMS ((bfd *, const char *));
|
||
#endif
|
||
bfd_boolean bfd_bfin_elf32_create_embedded_relocs
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, char **));
|
||
|
||
|
||
/* HOWTO Table for blackfin.
|
||
Blackfin relocations are fairly complicated.
|
||
Some of the salient features are
|
||
a. Even numbered offsets. A number of (not all) relocations are
|
||
even numbered. This means that the rightmost bit is not stored.
|
||
Needs to right shift by 1 and check to see if value is not odd
|
||
b. A relocation can be an expression. An expression takes on
|
||
a variety of relocations arranged in a stack.
|
||
As a result, we cannot use the standard generic function as special
|
||
function. We will have our own, which is very similar to the standard
|
||
generic function except that it understands how to get the value from
|
||
the relocation stack. . */
|
||
|
||
#define BFIN_RELOC_MIN 0
|
||
#define BFIN_RELOC_MAX 0x13
|
||
#define BFIN_GNUEXT_RELOC_MIN 0x40
|
||
#define BFIN_GNUEXT_RELOC_MAX 0x43
|
||
#define BFIN_ARELOC_MIN 0xE0
|
||
#define BFIN_ARELOC_MAX 0xF3
|
||
|
||
static reloc_howto_type bfin_howto_table [] =
|
||
{
|
||
/* This reloc does nothing. . */
|
||
HOWTO (R_unused0, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
32, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_bitfield, /* complain_on_overflow. */
|
||
bfd_elf_generic_reloc, /* special_function. */
|
||
"R_unused0", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel5m2, /* type. */
|
||
1, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long).. */
|
||
4, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_unsigned, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_pcrel5m2", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x0000000F, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_unused1, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
32, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_bitfield, /* complain_on_overflow. */
|
||
bfd_elf_generic_reloc, /* special_function. */
|
||
"R_unused1", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel10, /* type. */
|
||
1, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
10, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_pcrel10", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x000003FF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel12_jump, /* type. */
|
||
1, /* rightshift. */
|
||
/* the offset is actually 13 bit
|
||
aligned on a word boundary so
|
||
only 12 bits have to be used.
|
||
Right shift the rightmost bit.. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
12, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_pcrel12_jump", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x0FFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_rimm16, /* type. */
|
||
0, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
16, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_imm16_reloc, /* special_function. */
|
||
"R_rimm16", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x0000FFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_luimm16, /* type. */
|
||
0, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
16, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_imm16_reloc, /* special_function. */
|
||
"R_luimm16", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x0000FFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_huimm16, /* type. */
|
||
16, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
16, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_unsigned, /* complain_on_overflow. */
|
||
bfin_imm16_reloc, /* special_function. */
|
||
"R_huimm16", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x0000FFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel12_jump_s, /* type. */
|
||
1, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
12, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_pcrel12_jump_s", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x00000FFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel24_jump_x, /* type. */
|
||
1, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
24, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_pcrel24_reloc, /* special_function. */
|
||
"R_pcrel24_jump_x", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x00FFFFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel24, /* type. */
|
||
1, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
24, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_pcrel24_reloc, /* special_function. */
|
||
"R_pcrel24", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x00FFFFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_unusedb, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
32, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfd_elf_generic_reloc, /* special_function. */
|
||
"R_unusedb", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_unusedc, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
32, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfd_elf_generic_reloc, /* special_function. */
|
||
"R_unusedc", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel24_jump_l, /* type. */
|
||
1, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
24, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_pcrel24_reloc, /* special_function. */
|
||
"R_pcrel24_jump_l", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x00FFFFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel24_call_x, /* type. */
|
||
1, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
24, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_pcrel24_reloc, /* special_function. */
|
||
"R_pcrel24_call_x", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x00FFFFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_var_eq_symb, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
32, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_bitfield, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_var_eq_symb", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_byte_data, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
8, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_unsigned, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_byte_data", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0xFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_byte2_data, /* type. */
|
||
0, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
16, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_signed, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_byte2_data", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0xFFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_byte4_data, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
32, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_unsigned, /* complain_on_overflow. */
|
||
bfin_byte4_reloc, /* special_function. */
|
||
"R_byte4_data", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0xFFFFFFFF, /* dst_mask. */
|
||
TRUE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_pcrel11, /* type. */
|
||
1, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
10, /* bitsize. */
|
||
TRUE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_unsigned, /* complain_on_overflow. */
|
||
bfin_bfd_reloc, /* special_function. */
|
||
"R_pcrel11", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0x000003FF, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
};
|
||
|
||
static reloc_howto_type bfin_areloc_howto_table [] =
|
||
{
|
||
HOWTO (R_push,
|
||
0,
|
||
2,
|
||
0,
|
||
FALSE,
|
||
0,
|
||
complain_overflow_dont,
|
||
bfin_push_reloc,
|
||
"R_expst_push",
|
||
FALSE,
|
||
0,
|
||
0,
|
||
FALSE),
|
||
|
||
HOWTO (R_const,
|
||
0,
|
||
2,
|
||
0,
|
||
FALSE,
|
||
0,
|
||
complain_overflow_dont,
|
||
bfin_const_reloc,
|
||
"R_expst_const",
|
||
FALSE,
|
||
0,
|
||
0,
|
||
FALSE),
|
||
|
||
HOWTO (R_add,
|
||
0,
|
||
0,
|
||
0,
|
||
FALSE,
|
||
0,
|
||
complain_overflow_dont,
|
||
bfin_oper_reloc,
|
||
"R_expst_add",
|
||
FALSE,
|
||
0,
|
||
0,
|
||
FALSE),
|
||
|
||
HOWTO (R_sub,
|
||
0,
|
||
0,
|
||
0,
|
||
FALSE,
|
||
0,
|
||
complain_overflow_dont,
|
||
bfin_oper_reloc,
|
||
"R_expst_sub",
|
||
FALSE,
|
||
0,
|
||
0,
|
||
FALSE),
|
||
|
||
HOWTO (R_mult,
|
||
0,
|
||
0,
|
||
0,
|
||
FALSE,
|
||
0,
|
||
complain_overflow_dont,
|
||
bfin_oper_reloc,
|
||
"R_expst_mult",
|
||
FALSE,
|
||
0,
|
||
0,
|
||
FALSE),
|
||
|
||
HOWTO (R_div, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_div", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_mod, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_mod", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_lshift, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_lshift", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_rshift, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_rshift", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_and, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_and", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_or, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_or", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_xor, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_xor", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_land, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_land", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_lor, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_lor", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_len, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_len", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_neg, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_neg", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_comp, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_comp", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_page, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_page", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_hwpage, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_hwpage", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_addr, /* type. */
|
||
0, /* rightshift. */
|
||
0, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
bfin_oper_reloc, /* special_function. */
|
||
"R_expst_addr", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
};
|
||
|
||
static reloc_howto_type bfin_gnuext_howto_table [] =
|
||
{
|
||
HOWTO (R_pltpc, /* type. */
|
||
0, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
16, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_bitfield, /* complain_on_overflow. */
|
||
bfin_pltpc_reloc, /* special_function. */
|
||
"R_pltpc", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0xffff, /* src_mask. */
|
||
0xffff, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
HOWTO (R_got, /* type. */
|
||
0, /* rightshift. */
|
||
1, /* size (0 = byte, 1 = short, 2 = long). */
|
||
16, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_bitfield, /* complain_on_overflow. */
|
||
bfd_elf_generic_reloc, /* special_function. */
|
||
"R_got", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0x7fff, /* src_mask. */
|
||
0x7fff, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy. */
|
||
HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
NULL, /* special_function. */
|
||
"R_BFIN_GNU_VTINHERIT", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE), /* pcrel_offset. */
|
||
|
||
/* GNU extension to record C++ vtable member usage. */
|
||
HOWTO (R_BFIN_GNU_VTENTRY, /* type. */
|
||
0, /* rightshift. */
|
||
2, /* size (0 = byte, 1 = short, 2 = long). */
|
||
0, /* bitsize. */
|
||
FALSE, /* pc_relative. */
|
||
0, /* bitpos. */
|
||
complain_overflow_dont, /* complain_on_overflow. */
|
||
_bfd_elf_rel_vtable_reloc_fn, /* special_function. */
|
||
"R_BFIN_GNU_VTENTRY", /* name. */
|
||
FALSE, /* partial_inplace. */
|
||
0, /* src_mask. */
|
||
0, /* dst_mask. */
|
||
FALSE) /* pcrel_offset. */
|
||
};
|
||
|
||
struct bfin_reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc_val;
|
||
unsigned int bfin_reloc_val;
|
||
};
|
||
|
||
static const struct bfin_reloc_map bfin_reloc_map [] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_unused0 },
|
||
{ BFD_RELOC_BFIN_5_PCREL, R_pcrel5m2 },
|
||
{ BFD_RELOC_NONE, R_unused1 },
|
||
{ BFD_RELOC_BFIN_10_PCREL, R_pcrel10 },
|
||
{ BFD_RELOC_BFIN_12_PCREL_JUMP, R_pcrel12_jump },
|
||
{ BFD_RELOC_BFIN_16_IMM, R_rimm16 },
|
||
{ BFD_RELOC_BFIN_16_LOW, R_luimm16 },
|
||
{ BFD_RELOC_BFIN_16_HIGH, R_huimm16 },
|
||
{ BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_pcrel12_jump_s },
|
||
{ BFD_RELOC_24_PCREL, R_pcrel24 },
|
||
{ BFD_RELOC_24_PCREL, R_pcrel24 },
|
||
{ BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_pcrel24_jump_l },
|
||
{ BFD_RELOC_NONE, R_unusedb },
|
||
{ BFD_RELOC_NONE, R_unusedc },
|
||
{ BFD_RELOC_BFIN_24_PCREL_CALL_X, R_pcrel24_call_x },
|
||
{ BFD_RELOC_8, R_byte_data },
|
||
{ BFD_RELOC_16, R_byte2_data },
|
||
{ BFD_RELOC_32, R_byte4_data },
|
||
{ BFD_RELOC_BFIN_11_PCREL, R_pcrel11 },
|
||
{ BFD_RELOC_BFIN_GOT, R_got },
|
||
{ BFD_RELOC_BFIN_PLTPC, R_pltpc },
|
||
{ BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT },
|
||
{ BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY },
|
||
{ BFD_ARELOC_BFIN_PUSH, R_push },
|
||
{ BFD_ARELOC_BFIN_CONST, R_const },
|
||
{ BFD_ARELOC_BFIN_ADD, R_add },
|
||
{ BFD_ARELOC_BFIN_SUB, R_sub },
|
||
{ BFD_ARELOC_BFIN_MULT, R_mult },
|
||
{ BFD_ARELOC_BFIN_DIV, R_div },
|
||
{ BFD_ARELOC_BFIN_MOD, R_mod },
|
||
{ BFD_ARELOC_BFIN_LSHIFT, R_lshift },
|
||
{ BFD_ARELOC_BFIN_RSHIFT, R_rshift },
|
||
{ BFD_ARELOC_BFIN_AND, R_and },
|
||
{ BFD_ARELOC_BFIN_OR, R_or },
|
||
{ BFD_ARELOC_BFIN_XOR, R_xor },
|
||
{ BFD_ARELOC_BFIN_LAND, R_land },
|
||
{ BFD_ARELOC_BFIN_LOR, R_lor },
|
||
{ BFD_ARELOC_BFIN_LEN, R_len },
|
||
{ BFD_ARELOC_BFIN_NEG, R_neg },
|
||
{ BFD_ARELOC_BFIN_COMP, R_comp },
|
||
{ BFD_ARELOC_BFIN_PAGE, R_page },
|
||
{ BFD_ARELOC_BFIN_HWPAGE, R_hwpage },
|
||
{ BFD_ARELOC_BFIN_ADDR, R_addr }
|
||
|
||
};
|
||
|
||
|
||
static void
|
||
bfin_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
||
arelent *cache_ptr,
|
||
Elf_Internal_Rela *dst)
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
|
||
if (r_type <= BFIN_RELOC_MAX)
|
||
cache_ptr->howto = &bfin_howto_table [r_type];
|
||
|
||
else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX)
|
||
cache_ptr->howto = &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN];
|
||
|
||
else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
|
||
cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
|
||
|
||
else
|
||
cache_ptr->howto = (reloc_howto_type *) NULL;
|
||
|
||
}
|
||
/* Given a BFD reloc type, return the howto. */
|
||
static reloc_howto_type *
|
||
bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
|
||
bfd_reloc_code_real_type code)
|
||
{
|
||
unsigned int i;
|
||
unsigned int r_type = BFIN_RELOC_MIN;
|
||
|
||
for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); --i;)
|
||
if (bfin_reloc_map[i].bfd_reloc_val == code)
|
||
r_type = bfin_reloc_map[i].bfin_reloc_val;
|
||
|
||
if (r_type <= BFIN_RELOC_MAX && r_type > BFIN_RELOC_MIN)
|
||
return &bfin_howto_table [r_type];
|
||
|
||
else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX)
|
||
return &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN];
|
||
|
||
else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
|
||
return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
|
||
|
||
return (reloc_howto_type *) NULL;
|
||
|
||
}
|
||
/* Given a bfin relocation type, return the howto. */
|
||
static reloc_howto_type *
|
||
bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
|
||
unsigned int r_type)
|
||
{
|
||
if (r_type <= BFIN_RELOC_MAX)
|
||
return &bfin_howto_table [r_type];
|
||
|
||
else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX)
|
||
return &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN];
|
||
|
||
else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX)
|
||
return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN];
|
||
|
||
return (reloc_howto_type *) NULL;
|
||
|
||
}
|
||
|
||
/* Return TRUE if the name is a local label.
|
||
bfin local labels begin with L$. */
|
||
static bfd_boolean
|
||
bfin_is_local_label_name (
|
||
bfd *abfd ATTRIBUTE_UNUSED,
|
||
const char *label)
|
||
{
|
||
if (label[0] == 'L' && label[1] == '$' )
|
||
return TRUE;
|
||
|
||
return _bfd_elf_is_local_label_name (abfd, label);
|
||
}
|
||
|
||
|
||
/* Look through the relocs for a section during the first phase, and
|
||
allocate space in the global offset table or procedure linkage
|
||
table. */
|
||
|
||
static bfd_boolean
|
||
bfin_check_relocs (bfd * abfd,
|
||
struct bfd_link_info *info,
|
||
asection *sec,
|
||
const Elf_Internal_Rela *relocs)
|
||
{
|
||
bfd *dynobj;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
asection *sgot;
|
||
asection *srelgot;
|
||
asection *sreloc;
|
||
if (info->relocatable)
|
||
return TRUE;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
|
||
sgot = NULL;
|
||
srelgot = NULL;
|
||
sreloc = NULL;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_BFIN_GNU_VTINHERIT:
|
||
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
|
||
/* This relocation describes which C++ vtable entries
|
||
are actually used. Record for later use during GC. */
|
||
case R_BFIN_GNU_VTENTRY:
|
||
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
|
||
case R_got:
|
||
if (h != NULL
|
||
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
break;
|
||
/* Fall through. */
|
||
|
||
if (dynobj == NULL)
|
||
{
|
||
/* Create the .got section. */
|
||
elf_hash_table (info)->dynobj = dynobj = abfd;
|
||
if (!_bfd_elf_create_got_section (dynobj, info))
|
||
return FALSE;
|
||
}
|
||
|
||
if (sgot == NULL)
|
||
{
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
BFD_ASSERT (sgot != NULL);
|
||
}
|
||
|
||
if (srelgot == NULL && (h != NULL || info->shared))
|
||
{
|
||
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
if (srelgot == NULL)
|
||
{
|
||
srelgot = bfd_make_section (dynobj, ".rela.got");
|
||
if (srelgot == NULL
|
||
|| !bfd_set_section_flags (dynobj, srelgot,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (dynobj, srelgot, 2))
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
if (h->got.refcount == 0)
|
||
{
|
||
/* Make sure this symbol is output as a dynamic symbol. */
|
||
if (h->dynindx == -1 && !h->forced_local)
|
||
{
|
||
if (!bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return FALSE;
|
||
}
|
||
|
||
/* Allocate space in the .got section. */
|
||
sgot->size += 4;
|
||
/* Allocate relocation space. */
|
||
srelgot->size += sizeof (Elf32_External_Rela);
|
||
}
|
||
h->got.refcount++;
|
||
}
|
||
else
|
||
{
|
||
/* This is a global offset table entry for a local symbol. */
|
||
if (local_got_refcounts == NULL)
|
||
{
|
||
bfd_size_type size;
|
||
|
||
size = symtab_hdr->sh_info;
|
||
size *= sizeof (bfd_signed_vma);
|
||
local_got_refcounts = ((bfd_signed_vma *)
|
||
bfd_zalloc (abfd, size));
|
||
if (local_got_refcounts == NULL)
|
||
return FALSE;
|
||
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
||
}
|
||
if (local_got_refcounts[r_symndx] == 0)
|
||
{
|
||
sgot->size += 4;
|
||
if (info->shared)
|
||
{
|
||
/* If we are generating a shared object, we need to
|
||
output a R_68K_RELATIVE reloc so that the dynamic
|
||
linker can adjust this GOT entry. */
|
||
srelgot->size += sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
local_got_refcounts[r_symndx]++;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static enum elf_reloc_type_class
|
||
elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela)
|
||
{
|
||
switch ((int) ELF32_R_TYPE (rela->r_info))
|
||
{
|
||
default:
|
||
return reloc_class_normal;
|
||
}
|
||
}
|
||
|
||
static bfd_boolean
|
||
bfin_relocate_section (bfd * output_bfd,
|
||
struct bfd_link_info *info,
|
||
bfd * input_bfd,
|
||
asection * input_section,
|
||
bfd_byte * contents,
|
||
Elf_Internal_Rela * relocs,
|
||
Elf_Internal_Sym * local_syms,
|
||
asection ** local_sections)
|
||
{
|
||
bfd *dynobj;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_vma *local_got_offsets;
|
||
asection *sgot;
|
||
asection *sreloc;
|
||
Elf_Internal_Rela *rel;
|
||
Elf_Internal_Rela *relend;
|
||
int i = 0;
|
||
|
||
if (info->relocatable)
|
||
return TRUE;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
local_got_offsets = elf_local_got_offsets (input_bfd);
|
||
|
||
sgot = NULL;
|
||
sreloc = NULL;
|
||
|
||
rel = relocs;
|
||
relend = relocs + input_section->reloc_count;
|
||
for (; rel < relend; rel++, i++)
|
||
{
|
||
int r_type;
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
bfd_vma relocation = 0;
|
||
bfd_boolean unresolved_reloc;
|
||
bfd_reloc_status_type r;
|
||
bfd_vma address;
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
if (r_type < 0 || r_type >= 243)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
|
||
if (r_type == R_BFIN_GNU_VTENTRY
|
||
|| r_type == R_BFIN_GNU_VTINHERIT)
|
||
continue;
|
||
|
||
howto = bfin_reloc_type_lookup (input_bfd, r_type);
|
||
if (howto == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return FALSE;
|
||
}
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
||
h = NULL;
|
||
sym = NULL;
|
||
sec = NULL;
|
||
unresolved_reloc = FALSE;
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections[r_symndx];
|
||
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
||
}
|
||
else
|
||
{
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
if (!
|
||
(!strcmp (h->root.root.string, ".__constant")
|
||
|| !strcmp (h->root.root.string, ".__operator")))
|
||
{
|
||
bfd_boolean warned;
|
||
h = NULL;
|
||
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
||
r_symndx, symtab_hdr, sym_hashes,
|
||
h, sec, relocation,
|
||
unresolved_reloc, warned);
|
||
|
||
}
|
||
}
|
||
|
||
address = rel->r_offset;
|
||
/* First, get stack relocs out of the way. */
|
||
switch (r_type)
|
||
{
|
||
case R_push:
|
||
reloc_stack_push (relocation + rel->r_addend);
|
||
r = bfd_reloc_ok;
|
||
goto done_reloc;
|
||
case R_const:
|
||
reloc_stack_push (rel->r_addend);
|
||
r = bfd_reloc_ok;
|
||
goto done_reloc;
|
||
case R_add:
|
||
case R_sub:
|
||
case R_mult:
|
||
case R_div:
|
||
case R_mod:
|
||
case R_lshift:
|
||
case R_rshift:
|
||
case R_neg:
|
||
case R_and:
|
||
case R_or:
|
||
case R_xor:
|
||
case R_land:
|
||
case R_lor:
|
||
case R_comp:
|
||
case R_page:
|
||
case R_hwpage:
|
||
reloc_stack_operate (r_type);
|
||
r = bfd_reloc_ok;
|
||
goto done_reloc;
|
||
|
||
default:
|
||
if (!is_reloc_stack_empty())
|
||
relocation = reloc_stack_pop ();
|
||
break;
|
||
}
|
||
|
||
/* Then, process normally. */
|
||
switch (r_type)
|
||
{
|
||
case R_BFIN_GNU_VTINHERIT:
|
||
case R_BFIN_GNU_VTENTRY:
|
||
return bfd_reloc_ok;
|
||
|
||
case R_got:
|
||
/* Relocation is to the address of the entry for this symbol
|
||
in the global offset table. */
|
||
if (h != NULL
|
||
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
goto do_default;
|
||
/* Fall through. */
|
||
/* Relocation is the offset of the entry for this symbol in
|
||
the global offset table. */
|
||
|
||
{
|
||
bfd_vma off;
|
||
|
||
if (sgot == NULL)
|
||
{
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
BFD_ASSERT (sgot != NULL);
|
||
}
|
||
|
||
if (h != NULL)
|
||
{
|
||
bfd_boolean dyn;
|
||
|
||
off = h->got.offset;
|
||
BFD_ASSERT (off != (bfd_vma) - 1);
|
||
dyn = elf_hash_table (info)->dynamic_sections_created;
|
||
|
||
if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|
||
|| (info->shared
|
||
&& (info->symbolic
|
||
|| h->dynindx == -1
|
||
|| h->forced_local)
|
||
&& h->def_regular))
|
||
{
|
||
/* This is actually a static link, or it is a
|
||
-Bsymbolic link and the symbol is defined
|
||
locally, or the symbol was forced to be local
|
||
because of a version file.. We must initialize
|
||
this entry in the global offset table. Since
|
||
the offset must always be a multiple of 4, we
|
||
use the least significant bit to record whether
|
||
we have initialized it already.
|
||
|
||
When doing a dynamic link, we create a .rela.got
|
||
relocation entry to initialize the value. This
|
||
is done in the finish_dynamic_symbol routine. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, relocation,
|
||
sgot->contents + off);
|
||
h->got.offset |= 1;
|
||
}
|
||
}
|
||
else
|
||
unresolved_reloc = FALSE;
|
||
}
|
||
else
|
||
{
|
||
BFD_ASSERT (local_got_offsets != NULL);
|
||
off = local_got_offsets[r_symndx];
|
||
BFD_ASSERT (off != (bfd_vma) - 1);
|
||
|
||
/* The offset must always be a multiple of 4. We use
|
||
the least significant bit to record whether we have
|
||
already generated the necessary reloc. */
|
||
if ((off & 1) != 0)
|
||
off &= ~1;
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, relocation, sgot->contents + off);
|
||
|
||
if (info->shared)
|
||
{
|
||
asection *s;
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
outrel.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset + off);
|
||
outrel.r_info =
|
||
ELF32_R_INFO (0, R_pcrel24);
|
||
outrel.r_addend = relocation;
|
||
loc = s->contents;
|
||
loc +=
|
||
s->reloc_count++ * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
||
}
|
||
|
||
local_got_offsets[r_symndx] |= 1;
|
||
}
|
||
}
|
||
|
||
relocation = sgot->output_offset + off;
|
||
rel->r_addend = 0;
|
||
/* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
|
||
relocation /= 4;
|
||
}
|
||
goto do_default;
|
||
|
||
case R_pcrel24:
|
||
case R_pcrel24_jump_l:
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
|
||
/* Perform usual pc-relative correction. */
|
||
relocation -= input_section->output_section->vma + input_section->output_offset;
|
||
relocation -= address;
|
||
|
||
/* We are getting reloc_entry->address 2 byte off from
|
||
the start of instruction. Assuming absolute postion
|
||
of the reloc data. But, following code had been written assuming
|
||
reloc address is starting at begining of instruction.
|
||
To compensate that I have increased the value of
|
||
relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
|
||
|
||
relocation += 2;
|
||
address -= 2;
|
||
|
||
relocation >>= 1;
|
||
|
||
x = bfd_get_16 (input_bfd, contents + address);
|
||
x = (x & 0xff00) | ((relocation >> 16) & 0xff);
|
||
bfd_put_16 (input_bfd, x, contents + address);
|
||
|
||
x = bfd_get_16 (input_bfd, contents + address + 2);
|
||
x = relocation & 0xFFFF;
|
||
bfd_put_16 (input_bfd, x, contents + address + 2);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
do_default:
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, address,
|
||
relocation, rel->r_addend);
|
||
|
||
break;
|
||
}
|
||
|
||
done_reloc:
|
||
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
|
||
because such sections are not SEC_ALLOC and thus ld.so will
|
||
not process them. */
|
||
if (unresolved_reloc
|
||
&& !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic))
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
|
||
input_bfd,
|
||
input_section, (long) rel->r_offset, h->root.root.string);
|
||
return FALSE;
|
||
}
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
const char *name;
|
||
|
||
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)
|
||
return FALSE;
|
||
if (*name == '\0')
|
||
name = bfd_section_name (input_bfd, sec);
|
||
}
|
||
|
||
if (r == 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;
|
||
}
|
||
else
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%B(%A+0x%lx): reloc against `%s': error %d"),
|
||
input_bfd, input_section,
|
||
(long) rel->r_offset, name, (int) r);
|
||
return FALSE;
|
||
}
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static asection *
|
||
bfin_gc_mark_hook (asection * sec,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
Elf_Internal_Rela * rel,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym * sym)
|
||
{
|
||
if (h != NULL)
|
||
{
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
|
||
case R_BFIN_GNU_VTINHERIT:
|
||
case R_BFIN_GNU_VTENTRY:
|
||
break;
|
||
|
||
default:
|
||
switch (h->root.type)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
return h->root.u.def.section;
|
||
|
||
case bfd_link_hash_common:
|
||
return h->root.u.c.p->section;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
|
||
static bfd_boolean
|
||
bfin_gc_sweep_hook (bfd * abfd,
|
||
struct bfd_link_info *info,
|
||
asection * sec,
|
||
const Elf_Internal_Rela * relocs)
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel, *relend;
|
||
bfd *dynobj;
|
||
asection *sgot;
|
||
asection *srelgot;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
if (dynobj == NULL)
|
||
return TRUE;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
local_got_refcounts = elf_local_got_refcounts (abfd);
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_got:
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
if (h->got.refcount > 0)
|
||
{
|
||
--h->got.refcount;
|
||
if (h->got.refcount == 0)
|
||
{
|
||
/* We don't need the .got entry any more. */
|
||
sgot->size -= 4;
|
||
srelgot->size -= sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
}
|
||
else if (local_got_refcounts != NULL)
|
||
{
|
||
if (local_got_refcounts[r_symndx] > 0)
|
||
{
|
||
--local_got_refcounts[r_symndx];
|
||
if (local_got_refcounts[r_symndx] == 0)
|
||
{
|
||
/* We don't need the .got entry any more. */
|
||
sgot->size -= 4;
|
||
if (info->shared)
|
||
srelgot->size -= sizeof (Elf32_External_Rela);
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
static bfd_boolean
|
||
elf32_bfin_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
|
||
{
|
||
flagword out_flags;
|
||
flagword in_flags;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return TRUE;
|
||
|
||
in_flags = elf_elfheader (ibfd)->e_flags;
|
||
out_flags = elf_elfheader (obfd)->e_flags;
|
||
|
||
if (!elf_flags_init (obfd))
|
||
{
|
||
elf_flags_init (obfd) = TRUE;
|
||
elf_elfheader (obfd)->e_flags = in_flags;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
static bfd_boolean
|
||
elf32_bfin_set_private_flags (bfd * abfd, flagword flags)
|
||
{
|
||
elf_elfheader (abfd)->e_flags = flags;
|
||
elf_flags_init (abfd) = TRUE;
|
||
return TRUE;
|
||
}
|
||
|
||
|
||
/* Display the flags field. */
|
||
static bfd_boolean
|
||
elf32_bfin_print_private_bfd_data (bfd * abfd, PTR ptr)
|
||
{
|
||
FILE *file = (FILE *) ptr;
|
||
|
||
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
||
|
||
/* Print normal ELF private data. */
|
||
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
||
|
||
/* Ignore init flag - it may not be set, despite the flags field
|
||
containing valid data. */
|
||
|
||
/* xgettext:c-format */
|
||
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
|
||
|
||
fputc ('\n', file);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* bfin ELF linker hash entry. */
|
||
|
||
struct bfin_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry root;
|
||
|
||
/* Number of PC relative relocs copied for this symbol. */
|
||
struct bfin_pcrel_relocs_copied *pcrel_relocs_copied;
|
||
};
|
||
|
||
/* bfin ELF linker hash table. */
|
||
|
||
struct bfin_link_hash_table
|
||
{
|
||
struct elf_link_hash_table root;
|
||
|
||
/* Small local sym to section mapping cache. */
|
||
struct sym_sec_cache sym_sec;
|
||
};
|
||
|
||
#define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
|
||
|
||
static struct bfd_hash_entry *
|
||
bfin_link_hash_newfunc (struct bfd_hash_entry *entry,
|
||
struct bfd_hash_table *table, const char *string)
|
||
{
|
||
struct bfd_hash_entry *ret = entry;
|
||
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (ret == NULL)
|
||
ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry));
|
||
if (ret == NULL)
|
||
return ret;
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = _bfd_elf_link_hash_newfunc (ret, table, string);
|
||
if (ret != NULL)
|
||
bfin_hash_entry (ret)->pcrel_relocs_copied = NULL;
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Create an bfin ELF linker hash table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
bfin_link_hash_table_create (bfd * abfd)
|
||
{
|
||
struct bfin_link_hash_table *ret;
|
||
bfd_size_type amt = sizeof (struct bfin_link_hash_table);
|
||
|
||
ret = (struct bfin_link_hash_table *) bfd_malloc (amt);
|
||
if (ret == (struct bfin_link_hash_table *) NULL)
|
||
return NULL;
|
||
|
||
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
||
bfin_link_hash_newfunc,
|
||
sizeof (struct bfin_link_hash_entry)))
|
||
{
|
||
free (ret);
|
||
return NULL;
|
||
}
|
||
|
||
ret->sym_sec.abfd = NULL;
|
||
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* The size in bytes of an entry in the procedure linkage table. */
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
static bfd_boolean
|
||
bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
bfd *dynobj;
|
||
asection *sdyn;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
Elf32_External_Dyn *dyncon, *dynconend;
|
||
|
||
BFD_ASSERT (sdyn != NULL);
|
||
|
||
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
||
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
||
for (; dyncon < dynconend; dyncon++)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
|
||
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
}
|
||
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
static bfd_boolean
|
||
bfin_finish_dynamic_symbol (bfd * output_bfd,
|
||
struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym * sym)
|
||
{
|
||
bfd *dynobj;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
if (h->got.offset != (bfd_vma) - 1)
|
||
{
|
||
asection *sgot;
|
||
asection *srela;
|
||
Elf_Internal_Rela rela;
|
||
bfd_byte *loc;
|
||
|
||
/* This symbol has an entry in the global offset table.
|
||
Set it up. */
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
srela = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
BFD_ASSERT (sgot != NULL && srela != NULL);
|
||
|
||
rela.r_offset = (sgot->output_section->vma
|
||
+ sgot->output_offset
|
||
+ (h->got.offset & ~(bfd_vma) 1));
|
||
|
||
/* If this is a -Bsymbolic link, and the symbol is defined
|
||
locally, we just want to emit a RELATIVE reloc. Likewise if
|
||
the symbol was forced to be local because of a version file.
|
||
The entry in the global offset table will already have been
|
||
initialized in the relocate_section function. */
|
||
if (info->shared
|
||
&& (info->symbolic
|
||
|| h->dynindx == -1 || h->forced_local) && h->def_regular)
|
||
{
|
||
fprintf(stderr, "*** check this relocation %s\n", __FUNCTION__);
|
||
rela.r_info = ELF32_R_INFO (0, R_pcrel24);
|
||
rela.r_addend = bfd_get_signed_32 (output_bfd,
|
||
(sgot->contents
|
||
+
|
||
(h->got.
|
||
offset & ~(bfd_vma) 1)));
|
||
}
|
||
else
|
||
{
|
||
bfd_put_32 (output_bfd, (bfd_vma) 0,
|
||
sgot->contents + (h->got.offset & ~(bfd_vma) 1));
|
||
rela.r_info = ELF32_R_INFO (h->dynindx, R_got);
|
||
rela.r_addend = 0;
|
||
}
|
||
|
||
loc = srela->contents;
|
||
loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
|
||
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
||
}
|
||
|
||
if (h->needs_copy)
|
||
{
|
||
BFD_ASSERT (0);
|
||
}
|
||
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
||
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
||
|| h == elf_hash_table (info)->hgot)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Adjust a symbol defined by a dynamic object and referenced by a
|
||
regular object. The current definition is in some section of the
|
||
dynamic object, but we're not including those sections. We have to
|
||
change the definition to something the rest of the link can
|
||
understand. */
|
||
|
||
static bfd_boolean
|
||
bfin_adjust_dynamic_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
bfd *dynobj;
|
||
asection *s;
|
||
unsigned int power_of_two;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
/* Make sure we know what is going on here. */
|
||
BFD_ASSERT (dynobj != NULL
|
||
&& (h->needs_plt
|
||
|| h->u.weakdef != NULL
|
||
|| (h->def_dynamic && h->ref_regular && !h->def_regular)));
|
||
|
||
/* If this is a function, put it in the procedure linkage table. We
|
||
will fill in the contents of the procedure linkage table later,
|
||
when we know the address of the .got section. */
|
||
if (h->type == STT_FUNC || h->needs_plt)
|
||
{
|
||
BFD_ASSERT(0);
|
||
}
|
||
|
||
/* If this is a weak symbol, and there is a real definition, the
|
||
processor independent code will have arranged for us to see the
|
||
real definition first, and we can just use the same value. */
|
||
if (h->u.weakdef != NULL)
|
||
{
|
||
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
||
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
||
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
||
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is a reference to a symbol defined by a dynamic object which
|
||
is not a function. */
|
||
|
||
/* If we are creating a shared library, we must presume that the
|
||
only references to the symbol are via the global offset table.
|
||
For such cases we need not do anything here; the relocations will
|
||
be handled correctly by relocate_section. */
|
||
if (info->shared)
|
||
return TRUE;
|
||
|
||
/* We must allocate the symbol in our .dynbss section, which will
|
||
become part of the .bss section of the executable. There will be
|
||
an entry for this symbol in the .dynsym section. The dynamic
|
||
object will contain position independent code, so all references
|
||
from the dynamic object to this symbol will go through the global
|
||
offset table. The dynamic linker will use the .dynsym entry to
|
||
determine the address it must put in the global offset table, so
|
||
both the dynamic object and the regular object will refer to the
|
||
same memory location for the variable. */
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".dynbss");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
/* We must generate a R_68K_COPY reloc to tell the dynamic linker to
|
||
copy the initial value out of the dynamic object and into the
|
||
runtime process image. We need to remember the offset into the
|
||
.rela.bss section we are going to use. */
|
||
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
asection *srel;
|
||
|
||
srel = bfd_get_section_by_name (dynobj, ".rela.bss");
|
||
BFD_ASSERT (srel != NULL);
|
||
srel->size += sizeof (Elf32_External_Rela);
|
||
h->needs_copy = 1;
|
||
}
|
||
|
||
/* We need to figure out the alignment required for this symbol. I
|
||
have no idea how ELF linkers handle this. */
|
||
power_of_two = bfd_log2 (h->size);
|
||
if (power_of_two > 3)
|
||
power_of_two = 3;
|
||
|
||
/* Apply the required alignment. */
|
||
s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
|
||
if (power_of_two > bfd_get_section_alignment (dynobj, s))
|
||
{
|
||
if (!bfd_set_section_alignment (dynobj, s, power_of_two))
|
||
return FALSE;
|
||
}
|
||
|
||
/* Define the symbol as being at this point in the section. */
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = s->size;
|
||
|
||
/* Increment the section size to make room for the symbol. */
|
||
s->size += h->size;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* The bfin linker needs to keep track of the number of relocs that it
|
||
decides to copy in check_relocs for each symbol. This is so that it
|
||
can discard PC relative relocs if it doesn't need them when linking
|
||
with -Bsymbolic. We store the information in a field extending the
|
||
regular ELF linker hash table. */
|
||
|
||
/* This structure keeps track of the number of PC relative relocs we have
|
||
copied for a given symbol. */
|
||
|
||
struct bfin_pcrel_relocs_copied
|
||
{
|
||
/* Next section. */
|
||
struct bfin_pcrel_relocs_copied *next;
|
||
/* A section in dynobj. */
|
||
asection *section;
|
||
/* Number of relocs copied in this section. */
|
||
bfd_size_type count;
|
||
};
|
||
|
||
/* This function is called via elf_link_hash_traverse if we are
|
||
creating a shared object. In the -Bsymbolic case it discards the
|
||
space allocated to copy PC relative relocs against symbols which
|
||
are defined in regular objects. For the normal shared case, it
|
||
discards space for pc-relative relocs that have become local due to
|
||
symbol visibility changes. We allocated space for them in the
|
||
check_relocs routine, but we won't fill them in in the
|
||
relocate_section routine.
|
||
|
||
We also check whether any of the remaining relocations apply
|
||
against a readonly section, and set the DF_TEXTREL flag in this
|
||
case. */
|
||
|
||
static bfd_boolean
|
||
bfin_discard_copies (struct elf_link_hash_entry *h, PTR inf)
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
||
struct bfin_pcrel_relocs_copied *s;
|
||
|
||
if (h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
if (!h->def_regular || (!info->symbolic && !h->forced_local))
|
||
{
|
||
if ((info->flags & DF_TEXTREL) == 0)
|
||
{
|
||
/* Look for relocations against read-only sections. */
|
||
for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
|
||
s != NULL; s = s->next)
|
||
if ((s->section->flags & SEC_READONLY) != 0)
|
||
{
|
||
info->flags |= DF_TEXTREL;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
|
||
s != NULL; s = s->next)
|
||
s->section->size -= s->count * sizeof (Elf32_External_Rela);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
|
||
|
||
static bfd_boolean
|
||
bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
bfd *dynobj;
|
||
asection *s;
|
||
bfd_boolean relocs;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
BFD_ASSERT (dynobj != NULL);
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (info->executable)
|
||
{
|
||
s = bfd_get_section_by_name (dynobj, ".interp");
|
||
BFD_ASSERT (s != NULL);
|
||
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
||
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* We may have created entries in the .rela.got section.
|
||
However, if we are not creating the dynamic sections, we will
|
||
not actually use these entries. Reset the size of .rela.got,
|
||
which will cause it to get stripped from the output file
|
||
below. */
|
||
s = bfd_get_section_by_name (dynobj, ".rela.got");
|
||
if (s != NULL)
|
||
s->size = 0;
|
||
}
|
||
|
||
/* If this is a -Bsymbolic shared link, then we need to discard all
|
||
PC relative relocs against symbols defined in a regular object.
|
||
For the normal shared case we discard the PC relative relocs
|
||
against symbols that have become local due to visibility changes.
|
||
We allocated space for them in the check_relocs routine, but we
|
||
will not fill them in in the relocate_section routine. */
|
||
if (info->shared)
|
||
elf_link_hash_traverse (elf_hash_table (info),
|
||
bfin_discard_copies, (PTR) info);
|
||
|
||
/* The check_relocs and adjust_dynamic_symbol entry points have
|
||
determined the sizes of the various dynamic sections. Allocate
|
||
memory for them. */
|
||
relocs = FALSE;
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
const char *name;
|
||
bfd_boolean strip;
|
||
|
||
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
||
continue;
|
||
|
||
/* It's OK to base decisions on the section name, because none
|
||
of the dynobj section names depend upon the input files. */
|
||
name = bfd_get_section_name (dynobj, s);
|
||
|
||
strip = FALSE;
|
||
|
||
if (strncmp (name, ".rela", 5) == 0)
|
||
{
|
||
if (s->size == 0)
|
||
{
|
||
/* If we don't need this section, strip it from the
|
||
output file. This is mostly to handle .rela.bss and
|
||
.rela.plt. We must create both sections in
|
||
create_dynamic_sections, because they must be created
|
||
before the linker maps input sections to output
|
||
sections. The linker does that before
|
||
adjust_dynamic_symbol is called, and it is that
|
||
function which decides whether anything needs to go
|
||
into these sections. */
|
||
strip = TRUE;
|
||
}
|
||
else
|
||
{
|
||
relocs = TRUE;
|
||
|
||
/* We use the reloc_count field as a counter if we need
|
||
to copy relocs into the output file. */
|
||
s->reloc_count = 0;
|
||
}
|
||
}
|
||
else if (strncmp (name, ".got", 4) != 0)
|
||
{
|
||
/* It's not one of our sections, so don't allocate space. */
|
||
continue;
|
||
}
|
||
|
||
if (strip)
|
||
{
|
||
s->flags |= SEC_EXCLUDE;
|
||
continue;
|
||
}
|
||
|
||
/* Allocate memory for the section contents. */
|
||
/* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
|
||
Unused entries should be reclaimed before the section's contents
|
||
are written out, but at the moment this does not happen. Thus in
|
||
order to prevent writing out garbage, we initialise the section's
|
||
contents to zero. */
|
||
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
|
||
if (s->contents == NULL && s->size != 0)
|
||
return FALSE;
|
||
}
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the
|
||
values later, in bfin_finish_dynamic_sections, but we
|
||
must add the entries now so that we get the correct size for
|
||
the .dynamic section. The DT_DEBUG entry is filled in by the
|
||
dynamic linker and used by the debugger. */
|
||
#define add_dynamic_entry(TAG, VAL) \
|
||
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
||
|
||
if (!info->shared)
|
||
{
|
||
if (!add_dynamic_entry (DT_DEBUG, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
|
||
if (relocs)
|
||
{
|
||
if (!add_dynamic_entry (DT_RELA, 0)
|
||
|| !add_dynamic_entry (DT_RELASZ, 0)
|
||
|| !add_dynamic_entry (DT_RELAENT,
|
||
sizeof (Elf32_External_Rela)))
|
||
return FALSE;
|
||
}
|
||
|
||
if ((info->flags & DF_TEXTREL) != 0)
|
||
{
|
||
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
||
return FALSE;
|
||
}
|
||
}
|
||
#undef add_dynamic_entry
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Given a .data section and a .emreloc in-memory section, store
|
||
relocation information into the .emreloc section which can be
|
||
used at runtime to relocate the section. This is called by the
|
||
linker when the --embedded-relocs switch is used. This is called
|
||
after the add_symbols entry point has been called for all the
|
||
objects, and before the final_link entry point is called. */
|
||
|
||
bfd_boolean
|
||
bfd_bfin_elf32_create_embedded_relocs (
|
||
bfd *abfd,
|
||
struct bfd_link_info *info,
|
||
asection *datasec,
|
||
asection *relsec,
|
||
char **errmsg)
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
Elf_Internal_Sym *isymbuf = NULL;
|
||
Elf_Internal_Rela *internal_relocs = NULL;
|
||
Elf_Internal_Rela *irel, *irelend;
|
||
bfd_byte *p;
|
||
bfd_size_type amt;
|
||
|
||
BFD_ASSERT (! info->relocatable);
|
||
|
||
*errmsg = NULL;
|
||
|
||
if (datasec->reloc_count == 0)
|
||
return TRUE;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
|
||
/* Get a copy of the native relocations. */
|
||
internal_relocs = (_bfd_elf_link_read_relocs
|
||
(abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
|
||
info->keep_memory));
|
||
if (internal_relocs == NULL)
|
||
goto error_return;
|
||
|
||
amt = (bfd_size_type) datasec->reloc_count * 12;
|
||
relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
|
||
if (relsec->contents == NULL)
|
||
goto error_return;
|
||
|
||
p = relsec->contents;
|
||
|
||
irelend = internal_relocs + datasec->reloc_count;
|
||
for (irel = internal_relocs; irel < irelend; irel++, p += 12)
|
||
{
|
||
asection *targetsec;
|
||
|
||
/* We are going to write a four byte longword into the runtime
|
||
reloc section. The longword will be the address in the data
|
||
section which must be relocated. It is followed by the name
|
||
of the target section NUL-padded or truncated to 8
|
||
characters. */
|
||
|
||
/* We can only relocate absolute longword relocs at run time. */
|
||
if (ELF32_R_TYPE (irel->r_info) != (int) R_byte4_data)
|
||
{
|
||
*errmsg = _("unsupported reloc type");
|
||
bfd_set_error (bfd_error_bad_value);
|
||
goto error_return;
|
||
}
|
||
|
||
/* Get the target section referred to by the reloc. */
|
||
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
||
{
|
||
/* A local symbol. */
|
||
Elf_Internal_Sym *isym;
|
||
|
||
/* Read this BFD's local symbols if we haven't done so already. */
|
||
if (isymbuf == NULL)
|
||
{
|
||
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
||
if (isymbuf == NULL)
|
||
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
||
symtab_hdr->sh_info, 0,
|
||
NULL, NULL, NULL);
|
||
if (isymbuf == NULL)
|
||
goto error_return;
|
||
}
|
||
|
||
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
||
targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
||
}
|
||
else
|
||
{
|
||
unsigned long indx;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
/* An external symbol. */
|
||
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
||
h = elf_sym_hashes (abfd)[indx];
|
||
BFD_ASSERT (h != NULL);
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
targetsec = h->root.u.def.section;
|
||
else
|
||
targetsec = NULL;
|
||
}
|
||
|
||
bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
|
||
memset (p + 4, 0, 8);
|
||
if (targetsec != NULL)
|
||
strncpy ((char *) p + 4, targetsec->output_section->name, 8);
|
||
}
|
||
|
||
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
||
free (isymbuf);
|
||
if (internal_relocs != NULL
|
||
&& elf_section_data (datasec)->relocs != internal_relocs)
|
||
free (internal_relocs);
|
||
return TRUE;
|
||
|
||
error_return:
|
||
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
||
free (isymbuf);
|
||
if (internal_relocs != NULL
|
||
&& elf_section_data (datasec)->relocs != internal_relocs)
|
||
free (internal_relocs);
|
||
return FALSE;
|
||
}
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
|
||
#define TARGET_LITTLE_NAME "elf32-bfin"
|
||
#define ELF_ARCH bfd_arch_bfin
|
||
#define ELF_MACHINE_CODE EM_BLACKFIN
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
#define elf_symbol_leading_char '_'
|
||
|
||
#define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
|
||
#define elf_info_to_howto bfin_info_to_howto
|
||
#define elf_info_to_howto_rel 0
|
||
|
||
#define bfd_elf32_bfd_is_local_label_name \
|
||
bfin_is_local_label_name
|
||
#define bfin_hash_table(p) \
|
||
((struct bfin_link_hash_table *) (p)->hash)
|
||
|
||
|
||
|
||
#define elf_backend_create_dynamic_sections \
|
||
_bfd_elf_create_dynamic_sections
|
||
#define bfd_elf32_bfd_link_hash_table_create \
|
||
bfin_link_hash_table_create
|
||
#define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
|
||
|
||
#define elf_backend_check_relocs bfin_check_relocs
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
bfin_adjust_dynamic_symbol
|
||
#define elf_backend_size_dynamic_sections \
|
||
bfin_size_dynamic_sections
|
||
#define elf_backend_relocate_section bfin_relocate_section
|
||
#define elf_backend_finish_dynamic_symbol \
|
||
bfin_finish_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_sections \
|
||
bfin_finish_dynamic_sections
|
||
#define elf_backend_gc_mark_hook bfin_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
|
||
#define bfd_elf32_bfd_merge_private_bfd_data \
|
||
elf32_bfin_merge_private_bfd_data
|
||
#define bfd_elf32_bfd_set_private_flags \
|
||
elf32_bfin_set_private_flags
|
||
#define bfd_elf32_bfd_print_private_bfd_data \
|
||
elf32_bfin_print_private_bfd_data
|
||
#define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
|
||
#define elf_backend_can_gc_sections 1
|
||
#define elf_backend_can_refcount 1
|
||
#define elf_backend_want_got_plt 0
|
||
#define elf_backend_plt_readonly 1
|
||
#define elf_backend_want_plt_sym 0
|
||
#define elf_backend_got_header_size 12
|
||
#define elf_backend_rela_normal 1
|
||
|
||
|
||
#include "elf32-target.h"
|