| 1 |
/* ADI Blackfin BFD support for 32-bit ELF. |
| 2 |
Copyright 2005, 2006, 2007 Free Software Foundation, Inc. |
| 3 |
|
| 4 |
This file is part of BFD, the Binary File Descriptor library. |
| 5 |
|
| 6 |
This program is free software; you can redistribute it and/or modify |
| 7 |
it under the terms of the GNU General Public License as published by |
| 8 |
the Free Software Foundation; either version 3 of the License, or |
| 9 |
(at your option) any later version. |
| 10 |
|
| 11 |
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 |
| 13 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
GNU General Public License for more details. |
| 15 |
|
| 16 |
You should have received a copy of the GNU General Public License |
| 17 |
along with this program; if not, write to the Free Software |
| 18 |
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 |
MA 02110-1301, USA. */ |
| 20 |
|
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#include "sysdep.h" |
| 22 |
#include "bfd.h" |
| 23 |
#include "libbfd.h" |
| 24 |
#include "elf-bfd.h" |
| 25 |
#include "elf/bfin.h" |
| 26 |
#include "dwarf2.h" |
| 27 |
#include "hashtab.h" |
| 28 |
|
| 29 |
/* FUNCTION : bfin_pltpc_reloc |
| 30 |
ABSTRACT : TODO : figure out how to handle pltpc relocs. */ |
| 31 |
static bfd_reloc_status_type |
| 32 |
bfin_pltpc_reloc ( |
| 33 |
bfd *abfd ATTRIBUTE_UNUSED, |
| 34 |
arelent *reloc_entry ATTRIBUTE_UNUSED, |
| 35 |
asymbol *symbol ATTRIBUTE_UNUSED, |
| 36 |
PTR data ATTRIBUTE_UNUSED, |
| 37 |
asection *input_section ATTRIBUTE_UNUSED, |
| 38 |
bfd *output_bfd ATTRIBUTE_UNUSED, |
| 39 |
char **error_message ATTRIBUTE_UNUSED) |
| 40 |
{ |
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bfd_reloc_status_type flag = bfd_reloc_ok; |
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return flag; |
| 43 |
} |
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|
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|
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static bfd_reloc_status_type |
| 47 |
bfin_pcrel24_reloc (bfd *abfd, |
| 48 |
arelent *reloc_entry, |
| 49 |
asymbol *symbol, |
| 50 |
PTR data, |
| 51 |
asection *input_section, |
| 52 |
bfd *output_bfd, |
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char **error_message ATTRIBUTE_UNUSED) |
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{ |
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bfd_vma relocation; |
| 56 |
bfd_size_type addr = reloc_entry->address; |
| 57 |
bfd_vma output_base = 0; |
| 58 |
reloc_howto_type *howto = reloc_entry->howto; |
| 59 |
asection *output_section; |
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bfd_boolean relocatable = (output_bfd != NULL); |
| 61 |
|
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if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 63 |
return bfd_reloc_outofrange; |
| 64 |
|
| 65 |
if (bfd_is_und_section (symbol->section) |
| 66 |
&& (symbol->flags & BSF_WEAK) == 0 |
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&& !relocatable) |
| 68 |
return bfd_reloc_undefined; |
| 69 |
|
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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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|
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output_section = symbol->section->output_section; |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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relocation <<= (bfd_vma) howto->bitpos; |
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|
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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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{ |
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short x; |
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|
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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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|
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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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|
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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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|
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static bfd_reloc_status_type |
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bfin_imm16_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, x; |
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bfd_size_type reloc_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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|
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/* Is the address of the relocation really within the section? */ |
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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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|
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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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|
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output_section = symbol->section->output_section; |
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relocation = symbol->value; |
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|
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/* Convert input-section-relative symbol value to absolute. */ |
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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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|
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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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|
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/* Add in supplied addend. */ |
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relocation += reloc_entry->addend; |
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|
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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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else |
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{ |
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reloc_entry->addend = 0; |
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} |
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|
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if (howto->complain_on_overflow != complain_overflow_dont) |
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{ |
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bfd_reloc_status_type flag; |
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flag = 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 (flag != bfd_reloc_ok) |
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return flag; |
| 203 |
} |
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|
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/* Here the variable relocation holds the final address of the |
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symbol we are relocating against, plus any addend. */ |
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|
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relocation >>= (bfd_vma) howto->rightshift; |
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x = relocation; |
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bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr); |
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return bfd_reloc_ok; |
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} |
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|
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|
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static bfd_reloc_status_type |
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bfin_byte4_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, x; |
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bfd_size_type addr = reloc_entry->address; |
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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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|
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/* Is the address of the relocation really within the section? */ |
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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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|
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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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|
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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. */ |
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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; |
| 246 |
|
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if ((symbol->name |
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&& symbol->section->name |
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&& !strcmp (symbol->name, symbol->section->name)) |
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|| !relocatable) |
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{ |
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relocation += output_base + symbol->section->output_offset; |
| 253 |
} |
| 254 |
|
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relocation += reloc_entry->addend; |
| 256 |
|
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if (relocatable) |
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{ |
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/* This output will be relocatable ... like ld -r. */ |
| 260 |
reloc_entry->address += input_section->output_offset; |
| 261 |
reloc_entry->addend += symbol->section->output_offset; |
| 262 |
} |
| 263 |
else |
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{ |
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reloc_entry->addend = 0; |
| 266 |
} |
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|
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/* Here the variable relocation holds the final address of the |
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symbol we are relocating against, plus any addend. */ |
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x = relocation & 0xFFFF0000; |
| 271 |
x >>=16; |
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bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2); |
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|
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x = relocation & 0x0000FFFF; |
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bfd_put_16 (abfd, x, (unsigned char *) data + addr); |
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return bfd_reloc_ok; |
| 277 |
} |
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|
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/* bfin_bfd_reloc handles the blackfin arithmetic relocations. |
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Use this instead of bfd_perform_relocation. */ |
| 281 |
static bfd_reloc_status_type |
| 282 |
bfin_bfd_reloc (bfd *abfd, |
| 283 |
arelent *reloc_entry, |
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asymbol *symbol, |
| 285 |
PTR data, |
| 286 |
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; |
| 291 |
bfd_size_type addr = reloc_entry->address; |
| 292 |
bfd_vma output_base = 0; |
| 293 |
reloc_howto_type *howto = reloc_entry->howto; |
| 294 |
asection *output_section; |
| 295 |
bfd_boolean relocatable = (output_bfd != NULL); |
| 296 |
|
| 297 |
/* Is the address of the relocation really within the section? */ |
| 298 |
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 299 |
return bfd_reloc_outofrange; |
| 300 |
|
| 301 |
if (bfd_is_und_section (symbol->section) |
| 302 |
&& (symbol->flags & BSF_WEAK) == 0 |
| 303 |
&& !relocatable) |
| 304 |
return bfd_reloc_undefined; |
| 305 |
|
| 306 |
/* Get symbol value. (Common symbols are special.) */ |
| 307 |
if (bfd_is_com_section (symbol->section)) |
| 308 |
relocation = 0; |
| 309 |
else |
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relocation = symbol->value; |
| 311 |
|
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output_section = symbol->section->output_section; |
| 313 |
|
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/* Convert input-section-relative symbol value to absolute. */ |
| 315 |
if (relocatable) |
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output_base = 0; |
| 317 |
else |
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output_base = output_section->vma; |
| 319 |
|
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if (!relocatable || !strcmp (symbol->name, symbol->section->name)) |
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relocation += output_base + symbol->section->output_offset; |
| 322 |
|
| 323 |
if (!relocatable && !strcmp (symbol->name, symbol->section->name)) |
| 324 |
{ |
| 325 |
/* Add in supplied addend. */ |
| 326 |
relocation += reloc_entry->addend; |
| 327 |
} |
| 328 |
|
| 329 |
/* Here the variable relocation holds the final address of the |
| 330 |
symbol we are relocating against, plus any addend. */ |
| 331 |
|
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if (howto->pc_relative == TRUE) |
| 333 |
{ |
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relocation -= input_section->output_section->vma + input_section->output_offset; |
| 335 |
|
| 336 |
if (howto->pcrel_offset == TRUE) |
| 337 |
relocation -= reloc_entry->address; |
| 338 |
} |
| 339 |
|
| 340 |
if (relocatable) |
| 341 |
{ |
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reloc_entry->address += input_section->output_offset; |
| 343 |
reloc_entry->addend += symbol->section->output_offset; |
| 344 |
} |
| 345 |
|
| 346 |
if (howto->complain_on_overflow != complain_overflow_dont) |
| 347 |
{ |
| 348 |
bfd_reloc_status_type status; |
| 349 |
|
| 350 |
status = bfd_check_overflow (howto->complain_on_overflow, |
| 351 |
howto->bitsize, |
| 352 |
howto->rightshift, |
| 353 |
bfd_arch_bits_per_address(abfd), |
| 354 |
relocation); |
| 355 |
if (status != bfd_reloc_ok) |
| 356 |
return status; |
| 357 |
} |
| 358 |
|
| 359 |
/* If rightshift is 1 and the number odd, return error. */ |
| 360 |
if (howto->rightshift && (relocation & 0x01)) |
| 361 |
{ |
| 362 |
fprintf(stderr, "relocation should be even number\n"); |
| 363 |
return bfd_reloc_overflow; |
| 364 |
} |
| 365 |
|
| 366 |
relocation >>= (bfd_vma) howto->rightshift; |
| 367 |
|
| 368 |
/* Shift everything up to where it's going to be used. */ |
| 369 |
|
| 370 |
relocation <<= (bfd_vma) howto->bitpos; |
| 371 |
|
| 372 |
#define DOIT(x) \ |
| 373 |
x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask)) |
| 374 |
|
| 375 |
/* handle 8 and 16 bit relocations here. */ |
| 376 |
switch (howto->size) |
| 377 |
{ |
| 378 |
case 0: |
| 379 |
{ |
| 380 |
char x = bfd_get_8 (abfd, (char *) data + addr); |
| 381 |
DOIT (x); |
| 382 |
bfd_put_8 (abfd, x, (unsigned char *) data + addr); |
| 383 |
} |
| 384 |
break; |
| 385 |
|
| 386 |
case 1: |
| 387 |
{ |
| 388 |
unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr); |
| 389 |
DOIT (x); |
| 390 |
bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr); |
| 391 |
} |
| 392 |
break; |
| 393 |
|
| 394 |
default: |
| 395 |
return bfd_reloc_other; |
| 396 |
} |
| 397 |
|
| 398 |
return bfd_reloc_ok; |
| 399 |
} |
| 400 |
|
| 401 |
/* HOWTO Table for blackfin. |
| 402 |
Blackfin relocations are fairly complicated. |
| 403 |
Some of the salient features are |
| 404 |
a. Even numbered offsets. A number of (not all) relocations are |
| 405 |
even numbered. This means that the rightmost bit is not stored. |
| 406 |
Needs to right shift by 1 and check to see if value is not odd |
| 407 |
b. A relocation can be an expression. An expression takes on |
| 408 |
a variety of relocations arranged in a stack. |
| 409 |
As a result, we cannot use the standard generic function as special |
| 410 |
function. We will have our own, which is very similar to the standard |
| 411 |
generic function except that it understands how to get the value from |
| 412 |
the relocation stack. . */ |
| 413 |
|
| 414 |
#define BFIN_RELOC_MIN 0 |
| 415 |
#define BFIN_RELOC_MAX 0x21 |
| 416 |
#define BFIN_GNUEXT_RELOC_MIN 0x40 |
| 417 |
#define BFIN_GNUEXT_RELOC_MAX 0x43 |
| 418 |
#define BFIN_ARELOC_MIN 0xE0 |
| 419 |
#define BFIN_ARELOC_MAX 0xF3 |
| 420 |
|
| 421 |
static reloc_howto_type bfin_howto_table [] = |
| 422 |
{ |
| 423 |
/* This reloc does nothing. . */ |
| 424 |
HOWTO (R_unused0, /* type. */ |
| 425 |
0, /* rightshift. */ |
| 426 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 427 |
32, /* bitsize. */ |
| 428 |
FALSE, /* pc_relative. */ |
| 429 |
0, /* bitpos. */ |
| 430 |
complain_overflow_bitfield, /* complain_on_overflow. */ |
| 431 |
bfd_elf_generic_reloc, /* special_function. */ |
| 432 |
"R_unused0", /* name. */ |
| 433 |
FALSE, /* partial_inplace. */ |
| 434 |
0, /* src_mask. */ |
| 435 |
0, /* dst_mask. */ |
| 436 |
FALSE), /* pcrel_offset. */ |
| 437 |
|
| 438 |
HOWTO (R_pcrel5m2, /* type. */ |
| 439 |
1, /* rightshift. */ |
| 440 |
1, /* size (0 = byte, 1 = short, 2 = long).. */ |
| 441 |
4, /* bitsize. */ |
| 442 |
TRUE, /* pc_relative. */ |
| 443 |
0, /* bitpos. */ |
| 444 |
complain_overflow_unsigned, /* complain_on_overflow. */ |
| 445 |
bfin_bfd_reloc, /* special_function. */ |
| 446 |
"R_pcrel5m2", /* name. */ |
| 447 |
FALSE, /* partial_inplace. */ |
| 448 |
0, /* src_mask. */ |
| 449 |
0x0000000F, /* dst_mask. */ |
| 450 |
FALSE), /* pcrel_offset. */ |
| 451 |
|
| 452 |
HOWTO (R_unused1, /* type. */ |
| 453 |
0, /* rightshift. */ |
| 454 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 455 |
32, /* bitsize. */ |
| 456 |
FALSE, /* pc_relative. */ |
| 457 |
0, /* bitpos. */ |
| 458 |
complain_overflow_bitfield, /* complain_on_overflow. */ |
| 459 |
bfd_elf_generic_reloc, /* special_function. */ |
| 460 |
"R_unused1", /* name. */ |
| 461 |
FALSE, /* partial_inplace. */ |
| 462 |
0, /* src_mask. */ |
| 463 |
0, /* dst_mask. */ |
| 464 |
FALSE), /* pcrel_offset. */ |
| 465 |
|
| 466 |
HOWTO (R_pcrel10, /* type. */ |
| 467 |
1, /* rightshift. */ |
| 468 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 469 |
10, /* bitsize. */ |
| 470 |
TRUE, /* pc_relative. */ |
| 471 |
0, /* bitpos. */ |
| 472 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 473 |
bfin_bfd_reloc, /* special_function. */ |
| 474 |
"R_pcrel10", /* name. */ |
| 475 |
FALSE, /* partial_inplace. */ |
| 476 |
0, /* src_mask. */ |
| 477 |
0x000003FF, /* dst_mask. */ |
| 478 |
TRUE), /* pcrel_offset. */ |
| 479 |
|
| 480 |
HOWTO (R_pcrel12_jump, /* type. */ |
| 481 |
1, /* rightshift. */ |
| 482 |
/* the offset is actually 13 bit |
| 483 |
aligned on a word boundary so |
| 484 |
only 12 bits have to be used. |
| 485 |
Right shift the rightmost bit.. */ |
| 486 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 487 |
12, /* bitsize. */ |
| 488 |
TRUE, /* pc_relative. */ |
| 489 |
0, /* bitpos. */ |
| 490 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 491 |
bfin_bfd_reloc, /* special_function. */ |
| 492 |
"R_pcrel12_jump", /* name. */ |
| 493 |
FALSE, /* partial_inplace. */ |
| 494 |
0, /* src_mask. */ |
| 495 |
0x0FFF, /* dst_mask. */ |
| 496 |
TRUE), /* pcrel_offset. */ |
| 497 |
|
| 498 |
HOWTO (R_rimm16, /* type. */ |
| 499 |
0, /* rightshift. */ |
| 500 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 501 |
16, /* bitsize. */ |
| 502 |
FALSE, /* pc_relative. */ |
| 503 |
0, /* bitpos. */ |
| 504 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 505 |
bfin_imm16_reloc, /* special_function. */ |
| 506 |
"R_rimm16", /* name. */ |
| 507 |
FALSE, /* partial_inplace. */ |
| 508 |
0, /* src_mask. */ |
| 509 |
0x0000FFFF, /* dst_mask. */ |
| 510 |
TRUE), /* pcrel_offset. */ |
| 511 |
|
| 512 |
HOWTO (R_luimm16, /* type. */ |
| 513 |
0, /* rightshift. */ |
| 514 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 515 |
16, /* bitsize. */ |
| 516 |
FALSE, /* pc_relative. */ |
| 517 |
0, /* bitpos. */ |
| 518 |
complain_overflow_dont, /* complain_on_overflow. */ |
| 519 |
bfin_imm16_reloc, /* special_function. */ |
| 520 |
"R_luimm16", /* name. */ |
| 521 |
FALSE, /* partial_inplace. */ |
| 522 |
0, /* src_mask. */ |
| 523 |
0x0000FFFF, /* dst_mask. */ |
| 524 |
TRUE), /* pcrel_offset. */ |
| 525 |
|
| 526 |
HOWTO (R_huimm16, /* type. */ |
| 527 |
16, /* rightshift. */ |
| 528 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 529 |
16, /* bitsize. */ |
| 530 |
FALSE, /* pc_relative. */ |
| 531 |
0, /* bitpos. */ |
| 532 |
complain_overflow_unsigned, /* complain_on_overflow. */ |
| 533 |
bfin_imm16_reloc, /* special_function. */ |
| 534 |
"R_huimm16", /* name. */ |
| 535 |
FALSE, /* partial_inplace. */ |
| 536 |
0, /* src_mask. */ |
| 537 |
0x0000FFFF, /* dst_mask. */ |
| 538 |
TRUE), /* pcrel_offset. */ |
| 539 |
|
| 540 |
HOWTO (R_pcrel12_jump_s, /* type. */ |
| 541 |
1, /* rightshift. */ |
| 542 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 543 |
12, /* bitsize. */ |
| 544 |
TRUE, /* pc_relative. */ |
| 545 |
0, /* bitpos. */ |
| 546 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 547 |
bfin_bfd_reloc, /* special_function. */ |
| 548 |
"R_pcrel12_jump_s", /* name. */ |
| 549 |
FALSE, /* partial_inplace. */ |
| 550 |
0, /* src_mask. */ |
| 551 |
0x00000FFF, /* dst_mask. */ |
| 552 |
TRUE), /* pcrel_offset. */ |
| 553 |
|
| 554 |
HOWTO (R_pcrel24_jump_x, /* type. */ |
| 555 |
1, /* rightshift. */ |
| 556 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 557 |
24, /* bitsize. */ |
| 558 |
TRUE, /* pc_relative. */ |
| 559 |
0, /* bitpos. */ |
| 560 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 561 |
bfin_pcrel24_reloc, /* special_function. */ |
| 562 |
"R_pcrel24_jump_x", /* name. */ |
| 563 |
FALSE, /* partial_inplace. */ |
| 564 |
0, /* src_mask. */ |
| 565 |
0x00FFFFFF, /* dst_mask. */ |
| 566 |
TRUE), /* pcrel_offset. */ |
| 567 |
|
| 568 |
HOWTO (R_pcrel24, /* type. */ |
| 569 |
1, /* rightshift. */ |
| 570 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 571 |
24, /* bitsize. */ |
| 572 |
TRUE, /* pc_relative. */ |
| 573 |
0, /* bitpos. */ |
| 574 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 575 |
bfin_pcrel24_reloc, /* special_function. */ |
| 576 |
"R_pcrel24", /* name. */ |
| 577 |
FALSE, /* partial_inplace. */ |
| 578 |
0, /* src_mask. */ |
| 579 |
0x00FFFFFF, /* dst_mask. */ |
| 580 |
TRUE), /* pcrel_offset. */ |
| 581 |
|
| 582 |
HOWTO (R_unusedb, /* type. */ |
| 583 |
0, /* rightshift. */ |
| 584 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 585 |
32, /* bitsize. */ |
| 586 |
FALSE, /* pc_relative. */ |
| 587 |
0, /* bitpos. */ |
| 588 |
complain_overflow_dont, /* complain_on_overflow. */ |
| 589 |
bfd_elf_generic_reloc, /* special_function. */ |
| 590 |
"R_unusedb", /* name. */ |
| 591 |
FALSE, /* partial_inplace. */ |
| 592 |
0, /* src_mask. */ |
| 593 |
0, /* dst_mask. */ |
| 594 |
FALSE), /* pcrel_offset. */ |
| 595 |
|
| 596 |
HOWTO (R_unusedc, /* type. */ |
| 597 |
0, /* rightshift. */ |
| 598 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 599 |
32, /* bitsize. */ |
| 600 |
FALSE, /* pc_relative. */ |
| 601 |
0, /* bitpos. */ |
| 602 |
complain_overflow_dont, /* complain_on_overflow. */ |
| 603 |
bfd_elf_generic_reloc, /* special_function. */ |
| 604 |
"R_unusedc", /* name. */ |
| 605 |
FALSE, /* partial_inplace. */ |
| 606 |
0, /* src_mask. */ |
| 607 |
0, /* dst_mask. */ |
| 608 |
FALSE), /* pcrel_offset. */ |
| 609 |
|
| 610 |
HOWTO (R_pcrel24_jump_l, /* type. */ |
| 611 |
1, /* rightshift. */ |
| 612 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 613 |
24, /* bitsize. */ |
| 614 |
TRUE, /* pc_relative. */ |
| 615 |
0, /* bitpos. */ |
| 616 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 617 |
bfin_pcrel24_reloc, /* special_function. */ |
| 618 |
"R_pcrel24_jump_l", /* name. */ |
| 619 |
FALSE, /* partial_inplace. */ |
| 620 |
0, /* src_mask. */ |
| 621 |
0x00FFFFFF, /* dst_mask. */ |
| 622 |
TRUE), /* pcrel_offset. */ |
| 623 |
|
| 624 |
HOWTO (R_pcrel24_call_x, /* type. */ |
| 625 |
1, /* rightshift. */ |
| 626 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 627 |
24, /* bitsize. */ |
| 628 |
TRUE, /* pc_relative. */ |
| 629 |
0, /* bitpos. */ |
| 630 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 631 |
bfin_pcrel24_reloc, /* special_function. */ |
| 632 |
"R_pcrel24_call_x", /* name. */ |
| 633 |
FALSE, /* partial_inplace. */ |
| 634 |
0, /* src_mask. */ |
| 635 |
0x00FFFFFF, /* dst_mask. */ |
| 636 |
TRUE), /* pcrel_offset. */ |
| 637 |
|
| 638 |
HOWTO (R_var_eq_symb, /* type. */ |
| 639 |
0, /* rightshift. */ |
| 640 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 641 |
32, /* bitsize. */ |
| 642 |
FALSE, /* pc_relative. */ |
| 643 |
0, /* bitpos. */ |
| 644 |
complain_overflow_bitfield, /* complain_on_overflow. */ |
| 645 |
bfin_bfd_reloc, /* special_function. */ |
| 646 |
"R_var_eq_symb", /* name. */ |
| 647 |
FALSE, /* partial_inplace. */ |
| 648 |
0, /* src_mask. */ |
| 649 |
0, /* dst_mask. */ |
| 650 |
FALSE), /* pcrel_offset. */ |
| 651 |
|
| 652 |
HOWTO (R_byte_data, /* type. */ |
| 653 |
0, /* rightshift. */ |
| 654 |
0, /* size (0 = byte, 1 = short, 2 = long). */ |
| 655 |
8, /* bitsize. */ |
| 656 |
FALSE, /* pc_relative. */ |
| 657 |
0, /* bitpos. */ |
| 658 |
complain_overflow_unsigned, /* complain_on_overflow. */ |
| 659 |
bfin_bfd_reloc, /* special_function. */ |
| 660 |
"R_byte_data", /* name. */ |
| 661 |
FALSE, /* partial_inplace. */ |
| 662 |
0, /* src_mask. */ |
| 663 |
0xFF, /* dst_mask. */ |
| 664 |
TRUE), /* pcrel_offset. */ |
| 665 |
|
| 666 |
HOWTO (R_byte2_data, /* type. */ |
| 667 |
0, /* rightshift. */ |
| 668 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 669 |
16, /* bitsize. */ |
| 670 |
FALSE, /* pc_relative. */ |
| 671 |
0, /* bitpos. */ |
| 672 |
complain_overflow_signed, /* complain_on_overflow. */ |
| 673 |
bfin_bfd_reloc, /* special_function. */ |
| 674 |
"R_byte2_data", /* name. */ |
| 675 |
FALSE, /* partial_inplace. */ |
| 676 |
0, /* src_mask. */ |
| 677 |
0xFFFF, /* dst_mask. */ |
| 678 |
TRUE), /* pcrel_offset. */ |
| 679 |
|
| 680 |
HOWTO (R_byte4_data, /* type. */ |
| 681 |
0, /* rightshift. */ |
| 682 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 683 |
32, /* bitsize. */ |
| 684 |
FALSE, /* pc_relative. */ |
| 685 |
0, /* bitpos. */ |
| 686 |
complain_overflow_unsigned, /* complain_on_overflow. */ |
| 687 |
bfin_byte4_reloc, /* special_function. */ |
| 688 |
"R_byte4_data", /* name. */ |
| 689 |
FALSE, /* partial_inplace. */ |
| 690 |
0, /* src_mask. */ |
| 691 |
0xFFFFFFFF, /* dst_mask. */ |
| 692 |
TRUE), /* pcrel_offset. */ |
| 693 |
|
| 694 |
HOWTO (R_pcrel11, /* type. */ |
| 695 |
1, /* rightshift. */ |
| 696 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 697 |
10, /* bitsize. */ |
| 698 |
TRUE, /* pc_relative. */ |
| 699 |
0, /* bitpos. */ |
| 700 |
complain_overflow_unsigned, /* complain_on_overflow. */ |
| 701 |
bfin_bfd_reloc, /* special_function. */ |
| 702 |
"R_pcrel11", /* name. */ |
| 703 |
FALSE, /* partial_inplace. */ |
| 704 |
0, /* src_mask. */ |
| 705 |
0x000003FF, /* dst_mask. */ |
| 706 |
FALSE), /* pcrel_offset. */ |
| 707 |
|
| 708 |
|
| 709 |
/* A 18-bit signed operand with the GOT offset for the address of |
| 710 |
the symbol. */ |
| 711 |
HOWTO (R_BFIN_GOT17M4, /* type */ |
| 712 |
2, /* rightshift */ |
| 713 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 714 |
16, /* bitsize */ |
| 715 |
FALSE, /* pc_relative */ |
| 716 |
0, /* bitpos */ |
| 717 |
complain_overflow_signed, /* complain_on_overflow */ |
| 718 |
bfd_elf_generic_reloc, /* special_function */ |
| 719 |
"R_BFIN_GOT17M4", /* name */ |
| 720 |
FALSE, /* partial_inplace */ |
| 721 |
0xffff, /* src_mask */ |
| 722 |
0xffff, /* dst_mask */ |
| 723 |
FALSE), /* pcrel_offset */ |
| 724 |
|
| 725 |
/* The upper 16 bits of the GOT offset for the address of the |
| 726 |
symbol. */ |
| 727 |
HOWTO (R_BFIN_GOTHI, /* type */ |
| 728 |
0, /* rightshift */ |
| 729 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 730 |
16, /* bitsize */ |
| 731 |
FALSE, /* pc_relative */ |
| 732 |
0, /* bitpos */ |
| 733 |
complain_overflow_dont, /* complain_on_overflow */ |
| 734 |
bfd_elf_generic_reloc, /* special_function */ |
| 735 |
"R_BFIN_GOTHI", /* name */ |
| 736 |
FALSE, /* partial_inplace */ |
| 737 |
0xffff, /* src_mask */ |
| 738 |
0xffff, /* dst_mask */ |
| 739 |
FALSE), /* pcrel_offset */ |
| 740 |
|
| 741 |
/* The lower 16 bits of the GOT offset for the address of the |
| 742 |
symbol. */ |
| 743 |
HOWTO (R_BFIN_GOTLO, /* type */ |
| 744 |
0, /* rightshift */ |
| 745 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 746 |
16, /* bitsize */ |
| 747 |
FALSE, /* pc_relative */ |
| 748 |
0, /* bitpos */ |
| 749 |
complain_overflow_dont, /* complain_on_overflow */ |
| 750 |
bfd_elf_generic_reloc, /* special_function */ |
| 751 |
"R_BFIN_GOTLO", /* name */ |
| 752 |
FALSE, /* partial_inplace */ |
| 753 |
0xffff, /* src_mask */ |
| 754 |
0xffff, /* dst_mask */ |
| 755 |
FALSE), /* pcrel_offset */ |
| 756 |
|
| 757 |
/* The 32-bit address of the canonical descriptor of a function. */ |
| 758 |
HOWTO (R_BFIN_FUNCDESC, /* type */ |
| 759 |
0, /* rightshift */ |
| 760 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 761 |
32, /* bitsize */ |
| 762 |
FALSE, /* pc_relative */ |
| 763 |
0, /* bitpos */ |
| 764 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 765 |
bfd_elf_generic_reloc, /* special_function */ |
| 766 |
"R_BFIN_FUNCDESC", /* name */ |
| 767 |
FALSE, /* partial_inplace */ |
| 768 |
0xffffffff, /* src_mask */ |
| 769 |
0xffffffff, /* dst_mask */ |
| 770 |
FALSE), /* pcrel_offset */ |
| 771 |
|
| 772 |
/* A 12-bit signed operand with the GOT offset for the address of |
| 773 |
canonical descriptor of a function. */ |
| 774 |
HOWTO (R_BFIN_FUNCDESC_GOT17M4, /* type */ |
| 775 |
2, /* rightshift */ |
| 776 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 777 |
16, /* bitsize */ |
| 778 |
FALSE, /* pc_relative */ |
| 779 |
0, /* bitpos */ |
| 780 |
complain_overflow_signed, /* complain_on_overflow */ |
| 781 |
bfd_elf_generic_reloc, /* special_function */ |
| 782 |
"R_BFIN_FUNCDESC_GOT17M4", /* name */ |
| 783 |
FALSE, /* partial_inplace */ |
| 784 |
0xffff, /* src_mask */ |
| 785 |
0xffff, /* dst_mask */ |
| 786 |
FALSE), /* pcrel_offset */ |
| 787 |
|
| 788 |
/* The upper 16 bits of the GOT offset for the address of the |
| 789 |
canonical descriptor of a function. */ |
| 790 |
HOWTO (R_BFIN_FUNCDESC_GOTHI, /* type */ |
| 791 |
0, /* rightshift */ |
| 792 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 793 |
16, /* bitsize */ |
| 794 |
FALSE, /* pc_relative */ |
| 795 |
0, /* bitpos */ |
| 796 |
complain_overflow_dont, /* complain_on_overflow */ |
| 797 |
bfd_elf_generic_reloc, /* special_function */ |
| 798 |
"R_BFIN_FUNCDESC_GOTHI", /* name */ |
| 799 |
FALSE, /* partial_inplace */ |
| 800 |
0xffff, /* src_mask */ |
| 801 |
0xffff, /* dst_mask */ |
| 802 |
FALSE), /* pcrel_offset */ |
| 803 |
|
| 804 |
/* The lower 16 bits of the GOT offset for the address of the |
| 805 |
canonical descriptor of a function. */ |
| 806 |
HOWTO (R_BFIN_FUNCDESC_GOTLO, /* type */ |
| 807 |
0, /* rightshift */ |
| 808 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 809 |
16, /* bitsize */ |
| 810 |
FALSE, /* pc_relative */ |
| 811 |
0, /* bitpos */ |
| 812 |
complain_overflow_dont, /* complain_on_overflow */ |
| 813 |
bfd_elf_generic_reloc, /* special_function */ |
| 814 |
"R_BFIN_FUNCDESC_GOTLO", /* name */ |
| 815 |
FALSE, /* partial_inplace */ |
| 816 |
0xffff, /* src_mask */ |
| 817 |
0xffff, /* dst_mask */ |
| 818 |
FALSE), /* pcrel_offset */ |
| 819 |
|
| 820 |
/* The 32-bit address of the canonical descriptor of a function. */ |
| 821 |
HOWTO (R_BFIN_FUNCDESC_VALUE, /* type */ |
| 822 |
0, /* rightshift */ |
| 823 |
2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 824 |
64, /* bitsize */ |
| 825 |
FALSE, /* pc_relative */ |
| 826 |
0, /* bitpos */ |
| 827 |
complain_overflow_bitfield, /* complain_on_overflow */ |
| 828 |
bfd_elf_generic_reloc, /* special_function */ |
| 829 |
"R_BFIN_FUNCDESC_VALUE", /* name */ |
| 830 |
FALSE, /* partial_inplace */ |
| 831 |
0xffffffff, /* src_mask */ |
| 832 |
0xffffffff, /* dst_mask */ |
| 833 |
FALSE), /* pcrel_offset */ |
| 834 |
|
| 835 |
/* A 12-bit signed operand with the GOT offset for the address of |
| 836 |
canonical descriptor of a function. */ |
| 837 |
HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4, /* type */ |
| 838 |
2, /* rightshift */ |
| 839 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 840 |
16, /* bitsize */ |
| 841 |
FALSE, /* pc_relative */ |
| 842 |
0, /* bitpos */ |
| 843 |
complain_overflow_signed, /* complain_on_overflow */ |
| 844 |
bfd_elf_generic_reloc, /* special_function */ |
| 845 |
"R_BFIN_FUNCDESC_GOTOFF17M4", /* name */ |
| 846 |
FALSE, /* partial_inplace */ |
| 847 |
0xffff, /* src_mask */ |
| 848 |
0xffff, /* dst_mask */ |
| 849 |
FALSE), /* pcrel_offset */ |
| 850 |
|
| 851 |
/* The upper 16 bits of the GOT offset for the address of the |
| 852 |
canonical descriptor of a function. */ |
| 853 |
HOWTO (R_BFIN_FUNCDESC_GOTOFFHI, /* type */ |
| 854 |
0, /* rightshift */ |
| 855 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 856 |
16, /* bitsize */ |
| 857 |
FALSE, /* pc_relative */ |
| 858 |
0, /* bitpos */ |
| 859 |
complain_overflow_dont, /* complain_on_overflow */ |
| 860 |
bfd_elf_generic_reloc, /* special_function */ |
| 861 |
"R_BFIN_FUNCDESC_GOTOFFHI", /* name */ |
| 862 |
FALSE, /* partial_inplace */ |
| 863 |
0xffff, /* src_mask */ |
| 864 |
0xffff, /* dst_mask */ |
| 865 |
FALSE), /* pcrel_offset */ |
| 866 |
|
| 867 |
/* The lower 16 bits of the GOT offset for the address of the |
| 868 |
canonical descriptor of a function. */ |
| 869 |
HOWTO (R_BFIN_FUNCDESC_GOTOFFLO, /* type */ |
| 870 |
0, /* rightshift */ |
| 871 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 872 |
16, /* bitsize */ |
| 873 |
FALSE, /* pc_relative */ |
| 874 |
0, /* bitpos */ |
| 875 |
complain_overflow_dont, /* complain_on_overflow */ |
| 876 |
bfd_elf_generic_reloc, /* special_function */ |
| 877 |
"R_BFIN_FUNCDESC_GOTOFFLO", /* name */ |
| 878 |
FALSE, /* partial_inplace */ |
| 879 |
0xffff, /* src_mask */ |
| 880 |
0xffff, /* dst_mask */ |
| 881 |
FALSE), /* pcrel_offset */ |
| 882 |
|
| 883 |
/* A 12-bit signed operand with the GOT offset for the address of |
| 884 |
the symbol. */ |
| 885 |
HOWTO (R_BFIN_GOTOFF17M4, /* type */ |
| 886 |
2, /* rightshift */ |
| 887 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 888 |
16, /* bitsize */ |
| 889 |
FALSE, /* pc_relative */ |
| 890 |
0, /* bitpos */ |
| 891 |
complain_overflow_signed, /* complain_on_overflow */ |
| 892 |
bfd_elf_generic_reloc, /* special_function */ |
| 893 |
"R_BFIN_GOTOFF17M4", /* name */ |
| 894 |
FALSE, /* partial_inplace */ |
| 895 |
0xffff, /* src_mask */ |
| 896 |
0xffff, /* dst_mask */ |
| 897 |
FALSE), /* pcrel_offset */ |
| 898 |
|
| 899 |
/* The upper 16 bits of the GOT offset for the address of the |
| 900 |
symbol. */ |
| 901 |
HOWTO (R_BFIN_GOTOFFHI, /* type */ |
| 902 |
0, /* rightshift */ |
| 903 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 904 |
16, /* bitsize */ |
| 905 |
FALSE, /* pc_relative */ |
| 906 |
0, /* bitpos */ |
| 907 |
complain_overflow_dont, /* complain_on_overflow */ |
| 908 |
bfd_elf_generic_reloc, /* special_function */ |
| 909 |
"R_BFIN_GOTOFFHI", /* name */ |
| 910 |
FALSE, /* partial_inplace */ |
| 911 |
0xffff, /* src_mask */ |
| 912 |
0xffff, /* dst_mask */ |
| 913 |
FALSE), /* pcrel_offset */ |
| 914 |
|
| 915 |
/* The lower 16 bits of the GOT offset for the address of the |
| 916 |
symbol. */ |
| 917 |
HOWTO (R_BFIN_GOTOFFLO, /* type */ |
| 918 |
0, /* rightshift */ |
| 919 |
1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 920 |
16, /* bitsize */ |
| 921 |
FALSE, /* pc_relative */ |
| 922 |
0, /* bitpos */ |
| 923 |
complain_overflow_dont, /* complain_on_overflow */ |
| 924 |
bfd_elf_generic_reloc, /* special_function */ |
| 925 |
"R_BFIN_GOTOFFLO", /* name */ |
| 926 |
FALSE, /* partial_inplace */ |
| 927 |
0xffff, /* src_mask */ |
| 928 |
0xffff, /* dst_mask */ |
| 929 |
FALSE), /* pcrel_offset */ |
| 930 |
}; |
| 931 |
|
| 932 |
static reloc_howto_type bfin_gnuext_howto_table [] = |
| 933 |
{ |
| 934 |
HOWTO (R_pltpc, /* type. */ |
| 935 |
0, /* rightshift. */ |
| 936 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 937 |
16, /* bitsize. */ |
| 938 |
FALSE, /* pc_relative. */ |
| 939 |
0, /* bitpos. */ |
| 940 |
complain_overflow_bitfield, /* complain_on_overflow. */ |
| 941 |
bfin_pltpc_reloc, /* special_function. */ |
| 942 |
"R_pltpc", /* name. */ |
| 943 |
FALSE, /* partial_inplace. */ |
| 944 |
0xffff, /* src_mask. */ |
| 945 |
0xffff, /* dst_mask. */ |
| 946 |
FALSE), /* pcrel_offset. */ |
| 947 |
|
| 948 |
HOWTO (R_got, /* type. */ |
| 949 |
0, /* rightshift. */ |
| 950 |
1, /* size (0 = byte, 1 = short, 2 = long). */ |
| 951 |
16, /* bitsize. */ |
| 952 |
FALSE, /* pc_relative. */ |
| 953 |
0, /* bitpos. */ |
| 954 |
complain_overflow_bitfield, /* complain_on_overflow. */ |
| 955 |
bfd_elf_generic_reloc, /* special_function. */ |
| 956 |
"R_got", /* name. */ |
| 957 |
FALSE, /* partial_inplace. */ |
| 958 |
0x7fff, /* src_mask. */ |
| 959 |
0x7fff, /* dst_mask. */ |
| 960 |
FALSE), /* pcrel_offset. */ |
| 961 |
|
| 962 |
/* GNU extension to record C++ vtable hierarchy. */ |
| 963 |
HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */ |
| 964 |
0, /* rightshift. */ |
| 965 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 966 |
0, /* bitsize. */ |
| 967 |
FALSE, /* pc_relative. */ |
| 968 |
0, /* bitpos. */ |
| 969 |
complain_overflow_dont, /* complain_on_overflow. */ |
| 970 |
NULL, /* special_function. */ |
| 971 |
"R_BFIN_GNU_VTINHERIT", /* name. */ |
| 972 |
FALSE, /* partial_inplace. */ |
| 973 |
0, /* src_mask. */ |
| 974 |
0, /* dst_mask. */ |
| 975 |
FALSE), /* pcrel_offset. */ |
| 976 |
|
| 977 |
/* GNU extension to record C++ vtable member usage. */ |
| 978 |
HOWTO (R_BFIN_GNU_VTENTRY, /* type. */ |
| 979 |
0, /* rightshift. */ |
| 980 |
2, /* size (0 = byte, 1 = short, 2 = long). */ |
| 981 |
0, /* bitsize. */ |
| 982 |
FALSE, /* pc_relative. */ |
| 983 |
0, /* bitpos. */ |
| 984 |
complain_overflow_dont, /* complain_on_overflow. */ |
| 985 |
_bfd_elf_rel_vtable_reloc_fn, /* special_function. */ |
| 986 |
"R_BFIN_GNU_VTENTRY", /* name. */ |
| 987 |
FALSE, /* partial_inplace. */ |
| 988 |
0, /* src_mask. */ |
| 989 |
0, /* dst_mask. */ |
| 990 |
FALSE) /* pcrel_offset. */ |
| 991 |
}; |
| 992 |
|
| 993 |
struct bfin_reloc_map |
| 994 |
{ |
| 995 |
bfd_reloc_code_real_type bfd_reloc_val; |
| 996 |
unsigned int bfin_reloc_val; |
| 997 |
}; |
| 998 |
|
| 999 |
static const struct bfin_reloc_map bfin_reloc_map [] = |
| 1000 |
{ |
| 1001 |
{ BFD_RELOC_NONE, R_unused0 }, |
| 1002 |
{ BFD_RELOC_BFIN_5_PCREL, R_pcrel5m2 }, |
| 1003 |
{ BFD_RELOC_NONE, R_unused1 }, |
| 1004 |
{ BFD_RELOC_BFIN_10_PCREL, R_pcrel10 }, |
| 1005 |
{ BFD_RELOC_BFIN_12_PCREL_JUMP, R_pcrel12_jump }, |
| 1006 |
{ BFD_RELOC_BFIN_16_IMM, R_rimm16 }, |
| 1007 |
{ BFD_RELOC_BFIN_16_LOW, R_luimm16 }, |
| 1008 |
{ BFD_RELOC_BFIN_16_HIGH, R_huimm16 }, |
| 1009 |
{ BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_pcrel12_jump_s }, |
| 1010 |
{ BFD_RELOC_24_PCREL, R_pcrel24 }, |
| 1011 |
{ BFD_RELOC_24_PCREL, R_pcrel24 }, |
| 1012 |
{ BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_pcrel24_jump_l }, |
| 1013 |
{ BFD_RELOC_NONE, R_unusedb }, |
| 1014 |
{ BFD_RELOC_NONE, R_unusedc }, |
| 1015 |
{ BFD_RELOC_BFIN_24_PCREL_CALL_X, R_pcrel24_call_x }, |
| 1016 |
{ BFD_RELOC_8, R_byte_data }, |
| 1017 |
{ BFD_RELOC_16, R_byte2_data }, |
| 1018 |
{ BFD_RELOC_32, R_byte4_data }, |
| 1019 |
{ BFD_RELOC_BFIN_11_PCREL, R_pcrel11 }, |
| 1020 |
{ BFD_RELOC_BFIN_GOT, R_got }, |
| 1021 |
{ BFD_RELOC_BFIN_PLTPC, R_pltpc }, |
| 1022 |
|
| 1023 |
{ BFD_RELOC_BFIN_GOT17M4, R_BFIN_GOT17M4 }, |
| 1024 |
{ BFD_RELOC_BFIN_GOTHI, R_BFIN_GOTHI }, |
| 1025 |
{ BFD_RELOC_BFIN_GOTLO, R_BFIN_GOTLO }, |
| 1026 |
{ BFD_RELOC_BFIN_FUNCDESC, R_BFIN_FUNCDESC }, |
| 1027 |
{ BFD_RELOC_BFIN_FUNCDESC_GOT17M4, R_BFIN_FUNCDESC_GOT17M4 }, |
| 1028 |
{ BFD_RELOC_BFIN_FUNCDESC_GOTHI, R_BFIN_FUNCDESC_GOTHI }, |
| 1029 |
{ BFD_RELOC_BFIN_FUNCDESC_GOTLO, R_BFIN_FUNCDESC_GOTLO }, |
| 1030 |
{ BFD_RELOC_BFIN_FUNCDESC_VALUE, R_BFIN_FUNCDESC_VALUE }, |
| 1031 |
{ BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4, R_BFIN_FUNCDESC_GOTOFF17M4 }, |
| 1032 |
{ BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI, R_BFIN_FUNCDESC_GOTOFFHI }, |
| 1033 |
{ BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO, R_BFIN_FUNCDESC_GOTOFFLO }, |
| 1034 |
{ BFD_RELOC_BFIN_GOTOFF17M4, R_BFIN_GOTOFF17M4 }, |
| 1035 |
{ BFD_RELOC_BFIN_GOTOFFHI, R_BFIN_GOTOFFHI }, |
| 1036 |
{ BFD_RELOC_BFIN_GOTOFFLO, R_BFIN_GOTOFFLO }, |
| 1037 |
|
| 1038 |
{ BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT }, |
| 1039 |
{ BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY }, |
| 1040 |
}; |
| 1041 |
|
| 1042 |
|
| 1043 |
static void |
| 1044 |
bfin_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 1045 |
arelent *cache_ptr, |
| 1046 |
Elf_Internal_Rela *dst) |
| 1047 |
{ |
| 1048 |
unsigned int r_type; |
| 1049 |
|
| 1050 |
r_type = ELF32_R_TYPE (dst->r_info); |
| 1051 |
|
| 1052 |
if (r_type <= BFIN_RELOC_MAX) |
| 1053 |
cache_ptr->howto = &bfin_howto_table [r_type]; |
| 1054 |
|
| 1055 |
else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
| 1056 |
cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; |
| 1057 |
|
| 1058 |
else |
| 1059 |
cache_ptr->howto = (reloc_howto_type *) NULL; |
| 1060 |
} |
| 1061 |
|
| 1062 |
/* Given a BFD reloc type, return the howto. */ |
| 1063 |
static reloc_howto_type * |
| 1064 |
bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
| 1065 |
bfd_reloc_code_real_type code) |
| 1066 |
{ |
| 1067 |
unsigned int i; |
| 1068 |
unsigned int r_type = BFIN_RELOC_MIN; |
| 1069 |
|
| 1070 |
for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); --i;) |
| 1071 |
if (bfin_reloc_map[i].bfd_reloc_val == code) |
| 1072 |
r_type = bfin_reloc_map[i].bfin_reloc_val; |
| 1073 |
|
| 1074 |
if (r_type <= BFIN_RELOC_MAX && r_type > BFIN_RELOC_MIN) |
| 1075 |
return &bfin_howto_table [r_type]; |
| 1076 |
|
| 1077 |
else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
| 1078 |
return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; |
| 1079 |
|
| 1080 |
return (reloc_howto_type *) NULL; |
| 1081 |
} |
| 1082 |
|
| 1083 |
static reloc_howto_type * |
| 1084 |
bfin_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1085 |
const char *r_name) |
| 1086 |
{ |
| 1087 |
unsigned int i; |
| 1088 |
|
| 1089 |
for (i = 0; |
| 1090 |
i < (sizeof (bfin_howto_table) |
| 1091 |
/ sizeof (bfin_howto_table[0])); |
| 1092 |
i++) |
| 1093 |
if (bfin_howto_table[i].name != NULL |
| 1094 |
&& strcasecmp (bfin_howto_table[i].name, r_name) == 0) |
| 1095 |
return &bfin_howto_table[i]; |
| 1096 |
|
| 1097 |
for (i = 0; |
| 1098 |
i < (sizeof (bfin_gnuext_howto_table) |
| 1099 |
/ sizeof (bfin_gnuext_howto_table[0])); |
| 1100 |
i++) |
| 1101 |
if (bfin_gnuext_howto_table[i].name != NULL |
| 1102 |
&& strcasecmp (bfin_gnuext_howto_table[i].name, r_name) == 0) |
| 1103 |
return &bfin_gnuext_howto_table[i]; |
| 1104 |
|
| 1105 |
return NULL; |
| 1106 |
} |
| 1107 |
|
| 1108 |
/* Given a bfin relocation type, return the howto. */ |
| 1109 |
static reloc_howto_type * |
| 1110 |
bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
| 1111 |
unsigned int r_type) |
| 1112 |
{ |
| 1113 |
if (r_type <= BFIN_RELOC_MAX) |
| 1114 |
return &bfin_howto_table [r_type]; |
| 1115 |
|
| 1116 |
else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
| 1117 |
return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; |
| 1118 |
|
| 1119 |
return (reloc_howto_type *) NULL; |
| 1120 |
} |
| 1121 |
|
| 1122 |
/* Return TRUE if the name is a local label. |
| 1123 |
bfin local labels begin with L$. */ |
| 1124 |
static bfd_boolean |
| 1125 |
bfin_is_local_label_name ( |
| 1126 |
bfd *abfd, |
| 1127 |
const char *label) |
| 1128 |
{ |
| 1129 |
if (label[0] == 'L' && label[1] == '$' ) |
| 1130 |
return TRUE; |
| 1131 |
|
| 1132 |
return _bfd_elf_is_local_label_name (abfd, label); |
| 1133 |
} |
| 1134 |
|
| 1135 |
/* Look through the relocs for a section during the first phase, and |
| 1136 |
allocate space in the global offset table or procedure linkage |
| 1137 |
table. */ |
| 1138 |
|
| 1139 |
static bfd_boolean |
| 1140 |
bfin_check_relocs (bfd * abfd, |
| 1141 |
struct bfd_link_info *info, |
| 1142 |
asection *sec, |
| 1143 |
const Elf_Internal_Rela *relocs) |
| 1144 |
{ |
| 1145 |
bfd *dynobj; |
| 1146 |
Elf_Internal_Shdr *symtab_hdr; |
| 1147 |
struct elf_link_hash_entry **sym_hashes; |
| 1148 |
bfd_signed_vma *local_got_refcounts; |
| 1149 |
const Elf_Internal_Rela *rel; |
| 1150 |
const Elf_Internal_Rela *rel_end; |
| 1151 |
asection *sgot; |
| 1152 |
asection *srelgot; |
| 1153 |
if (info->relocatable) |
| 1154 |
return TRUE; |
| 1155 |
|
| 1156 |
dynobj = elf_hash_table (info)->dynobj; |
| 1157 |
symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1158 |
sym_hashes = elf_sym_hashes (abfd); |
| 1159 |
local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1160 |
|
| 1161 |
sgot = NULL; |
| 1162 |
srelgot = NULL; |
| 1163 |
|
| 1164 |
rel_end = relocs + sec->reloc_count; |
| 1165 |
for (rel = relocs; rel < rel_end; rel++) |
| 1166 |
{ |
| 1167 |
unsigned long r_symndx; |
| 1168 |
struct elf_link_hash_entry *h; |
| 1169 |
|
| 1170 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 1171 |
if (r_symndx < symtab_hdr->sh_info) |
| 1172 |
h = NULL; |
| 1173 |
else |
| 1174 |
h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1175 |
|
| 1176 |
switch (ELF32_R_TYPE (rel->r_info)) |
| 1177 |
{ |
| 1178 |
/* This relocation describes the C++ object vtable hierarchy. |
| 1179 |
Reconstruct it for later use during GC. */ |
| 1180 |
case R_BFIN_GNU_VTINHERIT: |
| 1181 |
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 1182 |
return FALSE; |
| 1183 |
break; |
| 1184 |
|
| 1185 |
/* This relocation describes which C++ vtable entries |
| 1186 |
are actually used. Record for later use during GC. */ |
| 1187 |
case R_BFIN_GNU_VTENTRY: |
| 1188 |
BFD_ASSERT (h != NULL); |
| 1189 |
if (h != NULL |
| 1190 |
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 1191 |
return FALSE; |
| 1192 |
break; |
| 1193 |
|
| 1194 |
case R_got: |
| 1195 |
if (h != NULL |
| 1196 |
&& strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) |
| 1197 |
break; |
| 1198 |
/* Fall through. */ |
| 1199 |
|
| 1200 |
if (dynobj == NULL) |
| 1201 |
{ |
| 1202 |
/* Create the .got section. */ |
| 1203 |
elf_hash_table (info)->dynobj = dynobj = abfd; |
| 1204 |
if (!_bfd_elf_create_got_section (dynobj, info)) |
| 1205 |
return FALSE; |
| 1206 |
} |
| 1207 |
|
| 1208 |
if (sgot == NULL) |
| 1209 |
{ |
| 1210 |
sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1211 |
BFD_ASSERT (sgot != NULL); |
| 1212 |
} |
| 1213 |
|
| 1214 |
if (srelgot == NULL && (h != NULL || info->shared)) |
| 1215 |
{ |
| 1216 |
srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1217 |
if (srelgot == NULL) |
| 1218 |
{ |
| 1219 |
flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 1220 |
| SEC_IN_MEMORY | SEC_LINKER_CREATED |
| 1221 |
| SEC_READONLY); |
| 1222 |
srelgot = bfd_make_section_with_flags (dynobj, ".rela.got", |
| 1223 |
flags); |
| 1224 |
if (srelgot == NULL |
| 1225 |
|| !bfd_set_section_alignment (dynobj, srelgot, 2)) |
| 1226 |
return FALSE; |
| 1227 |
} |
| 1228 |
} |
| 1229 |
|
| 1230 |
if (h != NULL) |
| 1231 |
{ |
| 1232 |
if (h->got.refcount == 0) |
| 1233 |
{ |
| 1234 |
/* Make sure this symbol is output as a dynamic symbol. */ |
| 1235 |
if (h->dynindx == -1 && !h->forced_local) |
| 1236 |
{ |
| 1237 |
if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1238 |
return FALSE; |
| 1239 |
} |
| 1240 |
|
| 1241 |
/* Allocate space in the .got section. */ |
| 1242 |
sgot->size += 4; |
| 1243 |
/* Allocate relocation space. */ |
| 1244 |
srelgot->size += sizeof (Elf32_External_Rela); |
| 1245 |
} |
| 1246 |
h->got.refcount++; |
| 1247 |
} |
| 1248 |
else |
| 1249 |
{ |
| 1250 |
/* This is a global offset table entry for a local symbol. */ |
| 1251 |
if (local_got_refcounts == NULL) |
| 1252 |
{ |
| 1253 |
bfd_size_type size; |
| 1254 |
|
| 1255 |
size = symtab_hdr->sh_info; |
| 1256 |
size *= sizeof (bfd_signed_vma); |
| 1257 |
local_got_refcounts = ((bfd_signed_vma *) |
| 1258 |
bfd_zalloc (abfd, size)); |
| 1259 |
if (local_got_refcounts == NULL) |
| 1260 |
return FALSE; |
| 1261 |
elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 1262 |
} |
| 1263 |
if (local_got_refcounts[r_symndx] == 0) |
| 1264 |
{ |
| 1265 |
sgot->size += 4; |
| 1266 |
if (info->shared) |
| 1267 |
{ |
| 1268 |
/* If we are generating a shared object, we need to |
| 1269 |
output a R_68K_RELATIVE reloc so that the dynamic |
| 1270 |
linker can adjust this GOT entry. */ |
| 1271 |
srelgot->size += sizeof (Elf32_External_Rela); |
| 1272 |
} |
| 1273 |
} |
| 1274 |
local_got_refcounts[r_symndx]++; |
| 1275 |
} |
| 1276 |
break; |
| 1277 |
|
| 1278 |
default: |
| 1279 |
break; |
| 1280 |
} |
| 1281 |
} |
| 1282 |
|
| 1283 |
return TRUE; |
| 1284 |
} |
| 1285 |
|
| 1286 |
static enum elf_reloc_type_class |
| 1287 |
elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela) |
| 1288 |
{ |
| 1289 |
switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 1290 |
{ |
| 1291 |
default: |
| 1292 |
return reloc_class_normal; |
| 1293 |
} |
| 1294 |
} |
| 1295 |
|
| 1296 |
static bfd_reloc_status_type |
| 1297 |
bfin_final_link_relocate (Elf_Internal_Rela *rel, reloc_howto_type *howto, |
| 1298 |
bfd *input_bfd, asection *input_section, |
| 1299 |
bfd_byte *contents, bfd_vma address, |
| 1300 |
bfd_vma value, bfd_vma addend) |
| 1301 |
{ |
| 1302 |
int r_type = ELF32_R_TYPE (rel->r_info); |
| 1303 |
|
| 1304 |
if (r_type == R_pcrel24 || r_type == R_pcrel24_jump_l) |
| 1305 |
{ |
| 1306 |
bfd_reloc_status_type r = bfd_reloc_ok; |
| 1307 |
bfd_vma x; |
| 1308 |
|
| 1309 |
if (address > bfd_get_section_limit (input_bfd, input_section)) |
| 1310 |
return bfd_reloc_outofrange; |
| 1311 |
|
| 1312 |
value += addend; |
| 1313 |
|
| 1314 |
/* Perform usual pc-relative correction. */ |
| 1315 |
value -= input_section->output_section->vma + input_section->output_offset; |
| 1316 |
value -= address; |
| 1317 |
|
| 1318 |
/* We are getting reloc_entry->address 2 byte off from |
| 1319 |
the start of instruction. Assuming absolute postion |
| 1320 |
of the reloc data. But, following code had been written assuming |
| 1321 |
reloc address is starting at begining of instruction. |
| 1322 |
To compensate that I have increased the value of |
| 1323 |
relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ |
| 1324 |
|
| 1325 |
value += 2; |
| 1326 |
address -= 2; |
| 1327 |
|
| 1328 |
if ((value & 0xFF000000) != 0 |
| 1329 |
&& (value & 0xFF000000) != 0xFF000000) |
| 1330 |
r = bfd_reloc_overflow; |
| 1331 |
|
| 1332 |
value >>= 1; |
| 1333 |
|
| 1334 |
x = bfd_get_16 (input_bfd, contents + address); |
| 1335 |
x = (x & 0xff00) | ((value >> 16) & 0xff); |
| 1336 |
bfd_put_16 (input_bfd, x, contents + address); |
| 1337 |
|
| 1338 |
x = bfd_get_16 (input_bfd, contents + address + 2); |
| 1339 |
x = value & 0xFFFF; |
| 1340 |
bfd_put_16 (input_bfd, x, contents + address + 2); |
| 1341 |
return r; |
| 1342 |
} |
| 1343 |
|
| 1344 |
return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, |
| 1345 |
rel->r_offset, value, addend); |
| 1346 |
|
| 1347 |
} |
| 1348 |
|
| 1349 |
static bfd_boolean |
| 1350 |
bfin_relocate_section (bfd * output_bfd, |
| 1351 |
struct bfd_link_info *info, |
| 1352 |
bfd * input_bfd, |
| 1353 |
asection * input_section, |
| 1354 |
bfd_byte * contents, |
| 1355 |
Elf_Internal_Rela * relocs, |
| 1356 |
Elf_Internal_Sym * local_syms, |
| 1357 |
asection ** local_sections) |
| 1358 |
{ |
| 1359 |
bfd *dynobj; |
| 1360 |
Elf_Internal_Shdr *symtab_hdr; |
| 1361 |
struct elf_link_hash_entry **sym_hashes; |
| 1362 |
bfd_vma *local_got_offsets; |
| 1363 |
asection *sgot; |
| 1364 |
Elf_Internal_Rela *rel; |
| 1365 |
Elf_Internal_Rela *relend; |
| 1366 |
int i = 0; |
| 1367 |
|
| 1368 |
dynobj = elf_hash_table (info)->dynobj; |
| 1369 |
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 1370 |
sym_hashes = elf_sym_hashes (input_bfd); |
| 1371 |
local_got_offsets = elf_local_got_offsets (input_bfd); |
| 1372 |
|
| 1373 |
sgot = NULL; |
| 1374 |
|
| 1375 |
rel = relocs; |
| 1376 |
relend = relocs + input_section->reloc_count; |
| 1377 |
for (; rel < relend; rel++, i++) |
| 1378 |
{ |
| 1379 |
int r_type; |
| 1380 |
reloc_howto_type *howto; |
| 1381 |
unsigned long r_symndx; |
| 1382 |
struct elf_link_hash_entry *h; |
| 1383 |
Elf_Internal_Sym *sym; |
| 1384 |
asection *sec; |
| 1385 |
bfd_vma relocation = 0; |
| 1386 |
bfd_boolean unresolved_reloc; |
| 1387 |
bfd_reloc_status_type r; |
| 1388 |
bfd_vma address; |
| 1389 |
|
| 1390 |
r_type = ELF32_R_TYPE (rel->r_info); |
| 1391 |
if (r_type < 0 || r_type >= 243) |
| 1392 |
{ |
| 1393 |
bfd_set_error (bfd_error_bad_value); |
| 1394 |
return FALSE; |
| 1395 |
} |
| 1396 |
|
| 1397 |
if (r_type == R_BFIN_GNU_VTENTRY |
| 1398 |
|| r_type == R_BFIN_GNU_VTINHERIT) |
| 1399 |
continue; |
| 1400 |
|
| 1401 |
howto = bfin_reloc_type_lookup (input_bfd, r_type); |
| 1402 |
if (howto == NULL) |
| 1403 |
{ |
| 1404 |
bfd_set_error (bfd_error_bad_value); |
| 1405 |
return FALSE; |
| 1406 |
} |
| 1407 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 1408 |
|
| 1409 |
h = NULL; |
| 1410 |
sym = NULL; |
| 1411 |
sec = NULL; |
| 1412 |
unresolved_reloc = FALSE; |
| 1413 |
|
| 1414 |
if (r_symndx < symtab_hdr->sh_info) |
| 1415 |
{ |
| 1416 |
sym = local_syms + r_symndx; |
| 1417 |
sec = local_sections[r_symndx]; |
| 1418 |
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 1419 |
} |
| 1420 |
else |
| 1421 |
{ |
| 1422 |
bfd_boolean warned; |
| 1423 |
|
| 1424 |
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 1425 |
r_symndx, symtab_hdr, sym_hashes, |
| 1426 |
h, sec, relocation, |
| 1427 |
unresolved_reloc, warned); |
| 1428 |
} |
| 1429 |
|
| 1430 |
if (sec != NULL && elf_discarded_section (sec)) |
| 1431 |
{ |
| 1432 |
/* For relocs against symbols from removed linkonce sections, |
| 1433 |
or sections discarded by a linker script, we just want the |
| 1434 |
section contents zeroed. Avoid any special processing. */ |
| 1435 |
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 1436 |
rel->r_info = 0; |
| 1437 |
rel->r_addend = 0; |
| 1438 |
continue; |
| 1439 |
} |
| 1440 |
|
| 1441 |
if (info->relocatable) |
| 1442 |
continue; |
| 1443 |
|
| 1444 |
address = rel->r_offset; |
| 1445 |
|
| 1446 |
/* Then, process normally. */ |
| 1447 |
switch (r_type) |
| 1448 |
{ |
| 1449 |
case R_BFIN_GNU_VTINHERIT: |
| 1450 |
case R_BFIN_GNU_VTENTRY: |
| 1451 |
return bfd_reloc_ok; |
| 1452 |
|
| 1453 |
case R_got: |
| 1454 |
/* Relocation is to the address of the entry for this symbol |
| 1455 |
in the global offset table. */ |
| 1456 |
if (h != NULL |
| 1457 |
&& strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) |
| 1458 |
goto do_default; |
| 1459 |
/* Fall through. */ |
| 1460 |
/* Relocation is the offset of the entry for this symbol in |
| 1461 |
the global offset table. */ |
| 1462 |
|
| 1463 |
{ |
| 1464 |
bfd_vma off; |
| 1465 |
|
| 1466 |
if (dynobj == NULL) |
| 1467 |
{ |
| 1468 |
/* Create the .got section. */ |
| 1469 |
elf_hash_table (info)->dynobj = dynobj = output_bfd; |
| 1470 |
if (!_bfd_elf_create_got_section (dynobj, info)) |
| 1471 |
return FALSE; |
| 1472 |
} |
| 1473 |
|
| 1474 |
if (sgot == NULL) |
| 1475 |
{ |
| 1476 |
sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1477 |
BFD_ASSERT (sgot != NULL); |
| 1478 |
} |
| 1479 |
|
| 1480 |
if (h != NULL) |
| 1481 |
{ |
| 1482 |
bfd_boolean dyn; |
| 1483 |
|
| 1484 |
off = h->got.offset; |
| 1485 |
BFD_ASSERT (off != (bfd_vma) - 1); |
| 1486 |
dyn = elf_hash_table (info)->dynamic_sections_created; |
| 1487 |
|
| 1488 |
if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 1489 |
|| (info->shared |
| 1490 |
&& (info->symbolic |
| 1491 |
|| h->dynindx == -1 |
| 1492 |
|| h->forced_local) |
| 1493 |
&& h->def_regular)) |
| 1494 |
{ |
| 1495 |
/* This is actually a static link, or it is a |
| 1496 |
-Bsymbolic link and the symbol is defined |
| 1497 |
locally, or the symbol was forced to be local |
| 1498 |
because of a version file.. We must initialize |
| 1499 |
this entry in the global offset table. Since |
| 1500 |
the offset must always be a multiple of 4, we |
| 1501 |
use the least significant bit to record whether |
| 1502 |
we have initialized it already. |
| 1503 |
|
| 1504 |
When doing a dynamic link, we create a .rela.got |
| 1505 |
relocation entry to initialize the value. This |
| 1506 |
is done in the finish_dynamic_symbol routine. */ |
| 1507 |
if ((off & 1) != 0) |
| 1508 |
off &= ~1; |
| 1509 |
else |
| 1510 |
{ |
| 1511 |
bfd_put_32 (output_bfd, relocation, |
| 1512 |
sgot->contents + off); |
| 1513 |
h->got.offset |= 1; |
| 1514 |
} |
| 1515 |
} |
| 1516 |
else |
| 1517 |
unresolved_reloc = FALSE; |
| 1518 |
} |
| 1519 |
else |
| 1520 |
{ |
| 1521 |
BFD_ASSERT (local_got_offsets != NULL); |
| 1522 |
off = local_got_offsets[r_symndx]; |
| 1523 |
BFD_ASSERT (off != (bfd_vma) - 1); |
| 1524 |
|
| 1525 |
/* The offset must always be a multiple of 4. We use |
| 1526 |
the least significant bit to record whether we have |
| 1527 |
already generated the necessary reloc. */ |
| 1528 |
if ((off & 1) != 0) |
| 1529 |
off &= ~1; |
| 1530 |
else |
| 1531 |
{ |
| 1532 |
bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 1533 |
|
| 1534 |
if (info->shared) |
| 1535 |
{ |
| 1536 |
asection *s; |
| 1537 |
Elf_Internal_Rela outrel; |
| 1538 |
bfd_byte *loc; |
| 1539 |
|
| 1540 |
s = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1541 |
BFD_ASSERT (s != NULL); |
| 1542 |
|
| 1543 |
outrel.r_offset = (sgot->output_section->vma |
| 1544 |
+ sgot->output_offset + off); |
| 1545 |
outrel.r_info = |
| 1546 |
ELF32_R_INFO (0, R_pcrel24); |
| 1547 |
outrel.r_addend = relocation; |
| 1548 |
loc = s->contents; |
| 1549 |
loc += |
| 1550 |
s->reloc_count++ * sizeof (Elf32_External_Rela); |
| 1551 |
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 1552 |
} |
| 1553 |
|
| 1554 |
local_got_offsets[r_symndx] |= 1; |
| 1555 |
} |
| 1556 |
} |
| 1557 |
|
| 1558 |
relocation = sgot->output_offset + off; |
| 1559 |
rel->r_addend = 0; |
| 1560 |
/* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */ |
| 1561 |
relocation /= 4; |
| 1562 |
} |
| 1563 |
goto do_default; |
| 1564 |
|
| 1565 |
default: |
| 1566 |
do_default: |
| 1567 |
r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, |
| 1568 |
contents, address, |
| 1569 |
relocation, rel->r_addend); |
| 1570 |
|
| 1571 |
break; |
| 1572 |
} |
| 1573 |
|
| 1574 |
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 1575 |
because such sections are not SEC_ALLOC and thus ld.so will |
| 1576 |
not process them. */ |
| 1577 |
if (unresolved_reloc |
| 1578 |
&& !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic)) |
| 1579 |
{ |
| 1580 |
(*_bfd_error_handler) |
| 1581 |
(_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), |
| 1582 |
input_bfd, |
| 1583 |
input_section, (long) rel->r_offset, h->root.root.string); |
| 1584 |
return FALSE; |
| 1585 |
} |
| 1586 |
|
| 1587 |
if (r != bfd_reloc_ok) |
| 1588 |
{ |
| 1589 |
const char *name; |
| 1590 |
|
| 1591 |
if (h != NULL) |
| 1592 |
name = h->root.root.string; |
| 1593 |
else |
| 1594 |
{ |
| 1595 |
name = bfd_elf_string_from_elf_section (input_bfd, |
| 1596 |
symtab_hdr->sh_link, |
| 1597 |
sym->st_name); |
| 1598 |
if (name == NULL) |
| 1599 |
return FALSE; |
| 1600 |
if (*name == '\0') |
| 1601 |
name = bfd_section_name (input_bfd, sec); |
| 1602 |
} |
| 1603 |
|
| 1604 |
if (r == bfd_reloc_overflow) |
| 1605 |
{ |
| 1606 |
if (!(info->callbacks->reloc_overflow |
| 1607 |
(info, (h ? &h->root : NULL), name, howto->name, |
| 1608 |
(bfd_vma) 0, input_bfd, input_section, rel->r_offset))) |
| 1609 |
return FALSE; |
| 1610 |
} |
| 1611 |
else |
| 1612 |
{ |
| 1613 |
(*_bfd_error_handler) |
| 1614 |
(_("%B(%A+0x%lx): reloc against `%s': error %d"), |
| 1615 |
input_bfd, input_section, |
| 1616 |
(long) rel->r_offset, name, (int) r); |
| 1617 |
return FALSE; |
| 1618 |
} |
| 1619 |
} |
| 1620 |
} |
| 1621 |
|
| 1622 |
return TRUE; |
| 1623 |
} |
| 1624 |
|
| 1625 |
static asection * |
| 1626 |
bfin_gc_mark_hook (asection * sec, |
| 1627 |
struct bfd_link_info *info, |
| 1628 |
Elf_Internal_Rela * rel, |
| 1629 |
struct elf_link_hash_entry *h, |
| 1630 |
Elf_Internal_Sym * sym) |
| 1631 |
{ |
| 1632 |
if (h != NULL) |
| 1633 |
switch (ELF32_R_TYPE (rel->r_info)) |
| 1634 |
{ |
| 1635 |
case R_BFIN_GNU_VTINHERIT: |
| 1636 |
case R_BFIN_GNU_VTENTRY: |
| 1637 |
return NULL; |
| 1638 |
} |
| 1639 |
|
| 1640 |
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 1641 |
} |
| 1642 |
|
| 1643 |
/* Update the got entry reference counts for the section being removed. */ |
| 1644 |
|
| 1645 |
static bfd_boolean |
| 1646 |
bfin_gc_sweep_hook (bfd * abfd, |
| 1647 |
struct bfd_link_info *info, |
| 1648 |
asection * sec, |
| 1649 |
const Elf_Internal_Rela * relocs) |
| 1650 |
{ |
| 1651 |
Elf_Internal_Shdr *symtab_hdr; |
| 1652 |
struct elf_link_hash_entry **sym_hashes; |
| 1653 |
bfd_signed_vma *local_got_refcounts; |
| 1654 |
const Elf_Internal_Rela *rel, *relend; |
| 1655 |
bfd *dynobj; |
| 1656 |
asection *sgot; |
| 1657 |
asection *srelgot; |
| 1658 |
|
| 1659 |
dynobj = elf_hash_table (info)->dynobj; |
| 1660 |
if (dynobj == NULL) |
| 1661 |
return TRUE; |
| 1662 |
|
| 1663 |
symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1664 |
sym_hashes = elf_sym_hashes (abfd); |
| 1665 |
local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1666 |
|
| 1667 |
sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1668 |
srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1669 |
|
| 1670 |
relend = relocs + sec->reloc_count; |
| 1671 |
for (rel = relocs; rel < relend; rel++) |
| 1672 |
{ |
| 1673 |
unsigned long r_symndx; |
| 1674 |
struct elf_link_hash_entry *h; |
| 1675 |
|
| 1676 |
switch (ELF32_R_TYPE (rel->r_info)) |
| 1677 |
{ |
| 1678 |
case R_got: |
| 1679 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 1680 |
if (r_symndx >= symtab_hdr->sh_info) |
| 1681 |
{ |
| 1682 |
h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1683 |
if (h->got.refcount > 0) |
| 1684 |
{ |
| 1685 |
--h->got.refcount; |
| 1686 |
if (h->got.refcount == 0) |
| 1687 |
{ |
| 1688 |
/* We don't need the .got entry any more. */ |
| 1689 |
sgot->size -= 4; |
| 1690 |
srelgot->size -= sizeof (Elf32_External_Rela); |
| 1691 |
} |
| 1692 |
} |
| 1693 |
} |
| 1694 |
else if (local_got_refcounts != NULL) |
| 1695 |
{ |
| 1696 |
if (local_got_refcounts[r_symndx] > 0) |
| 1697 |
{ |
| 1698 |
--local_got_refcounts[r_symndx]; |
| 1699 |
if (local_got_refcounts[r_symndx] == 0) |
| 1700 |
{ |
| 1701 |
/* We don't need the .got entry any more. */ |
| 1702 |
sgot->size -= 4; |
| 1703 |
if (info->shared) |
| 1704 |
srelgot->size -= sizeof (Elf32_External_Rela); |
| 1705 |
} |
| 1706 |
} |
| 1707 |
} |
| 1708 |
break; |
| 1709 |
default: |
| 1710 |
break; |
| 1711 |
} |
| 1712 |
} |
| 1713 |
return TRUE; |
| 1714 |
} |
| 1715 |
|
| 1716 |
extern const bfd_target bfd_elf32_bfinfdpic_vec; |
| 1717 |
#define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_bfinfdpic_vec) |
| 1718 |
|
| 1719 |
/* An extension of the elf hash table data structure, containing some |
| 1720 |
additional Blackfin-specific data. */ |
| 1721 |
struct bfinfdpic_elf_link_hash_table |
| 1722 |
{ |
| 1723 |
struct elf_link_hash_table elf; |
| 1724 |
|
| 1725 |
/* A pointer to the .got section. */ |
| 1726 |
asection *sgot; |
| 1727 |
/* A pointer to the .rel.got section. */ |
| 1728 |
asection *sgotrel; |
| 1729 |
/* A pointer to the .rofixup section. */ |
| 1730 |
asection *sgotfixup; |
| 1731 |
/* A pointer to the .plt section. */ |
| 1732 |
asection *splt; |
| 1733 |
/* A pointer to the .rel.plt section. */ |
| 1734 |
asection *spltrel; |
| 1735 |
/* GOT base offset. */ |
| 1736 |
bfd_vma got0; |
| 1737 |
/* Location of the first non-lazy PLT entry, i.e., the number of |
| 1738 |
bytes taken by lazy PLT entries. */ |
| 1739 |
bfd_vma plt0; |
| 1740 |
/* A hash table holding information about which symbols were |
| 1741 |
referenced with which PIC-related relocations. */ |
| 1742 |
struct htab *relocs_info; |
| 1743 |
}; |
| 1744 |
|
| 1745 |
/* Get the Blackfin ELF linker hash table from a link_info structure. */ |
| 1746 |
|
| 1747 |
#define bfinfdpic_hash_table(info) \ |
| 1748 |
((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) |
| 1749 |
|
| 1750 |
#define bfinfdpic_got_section(info) \ |
| 1751 |
(bfinfdpic_hash_table (info)->sgot) |
| 1752 |
#define bfinfdpic_gotrel_section(info) \ |
| 1753 |
(bfinfdpic_hash_table (info)->sgotrel) |
| 1754 |
#define bfinfdpic_gotfixup_section(info) \ |
| 1755 |
(bfinfdpic_hash_table (info)->sgotfixup) |
| 1756 |
#define bfinfdpic_plt_section(info) \ |
| 1757 |
(bfinfdpic_hash_table (info)->splt) |
| 1758 |
#define bfinfdpic_pltrel_section(info) \ |
| 1759 |
(bfinfdpic_hash_table (info)->spltrel) |
| 1760 |
#define bfinfdpic_relocs_info(info) \ |
| 1761 |
(bfinfdpic_hash_table (info)->relocs_info) |
| 1762 |
#define bfinfdpic_got_initial_offset(info) \ |
| 1763 |
(bfinfdpic_hash_table (info)->got0) |
| 1764 |
#define bfinfdpic_plt_initial_offset(info) \ |
| 1765 |
(bfinfdpic_hash_table (info)->plt0) |
| 1766 |
|
| 1767 |
/* The name of the dynamic interpreter. This is put in the .interp |
| 1768 |
section. */ |
| 1769 |
|
| 1770 |
#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
| 1771 |
|
| 1772 |
#define DEFAULT_STACK_SIZE 0x20000 |
| 1773 |
|
| 1774 |
/* This structure is used to collect the number of entries present in |
| 1775 |
each addressable range of the got. */ |
| 1776 |
struct _bfinfdpic_dynamic_got_info |
| 1777 |
{ |
| 1778 |
/* Several bits of information about the current link. */ |
| 1779 |
struct bfd_link_info *info; |
| 1780 |
/* Total size needed for GOT entries within the 18- or 32-bit |
| 1781 |
ranges. */ |
| 1782 |
bfd_vma got17m4, gothilo; |
| 1783 |
/* Total size needed for function descriptor entries within the 18- |
| 1784 |
or 32-bit ranges. */ |
| 1785 |
bfd_vma fd17m4, fdhilo; |
| 1786 |
/* Total size needed function descriptor entries referenced in PLT |
| 1787 |
entries, that would be profitable to place in offsets close to |
| 1788 |
the PIC register. */ |
| 1789 |
bfd_vma fdplt; |
| 1790 |
/* Total size needed by lazy PLT entries. */ |
| 1791 |
bfd_vma lzplt; |
| 1792 |
/* Number of relocations carried over from input object files. */ |
| 1793 |
unsigned long relocs; |
| 1794 |
/* Number of fixups introduced by relocations in input object files. */ |
| 1795 |
unsigned long fixups; |
| 1796 |
}; |
| 1797 |
|
| 1798 |
/* Create a Blackfin ELF linker hash table. */ |
| 1799 |
|
| 1800 |
static struct bfd_link_hash_table * |
| 1801 |
bfinfdpic_elf_link_hash_table_create (bfd *abfd) |
| 1802 |
{ |
| 1803 |
struct bfinfdpic_elf_link_hash_table *ret; |
| 1804 |
bfd_size_type amt = sizeof (struct bfinfdpic_elf_link_hash_table); |
| 1805 |
|
| 1806 |
ret = bfd_zalloc (abfd, amt); |
| 1807 |
if (ret == NULL) |
| 1808 |
return NULL; |
| 1809 |
|
| 1810 |
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
| 1811 |
_bfd_elf_link_hash_newfunc, |
| 1812 |
sizeof (struct elf_link_hash_entry))) |
| 1813 |
{ |
| 1814 |
free (ret); |
| 1815 |
return NULL; |
| 1816 |
} |
| 1817 |
|
| 1818 |
return &ret->elf.root; |
| 1819 |
} |
| 1820 |
|
| 1821 |
/* Decide whether a reference to a symbol can be resolved locally or |
| 1822 |
not. If the symbol is protected, we want the local address, but |
| 1823 |
its function descriptor must be assigned by the dynamic linker. */ |
| 1824 |
#define BFINFDPIC_SYM_LOCAL(INFO, H) \ |
| 1825 |
(_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ |
| 1826 |
|| ! elf_hash_table (INFO)->dynamic_sections_created) |
| 1827 |
#define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \ |
| 1828 |
((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) |
| 1829 |
|
| 1830 |
/* This structure collects information on what kind of GOT, PLT or |
| 1831 |
function descriptors are required by relocations that reference a |
| 1832 |
certain symbol. */ |
| 1833 |
struct bfinfdpic_relocs_info |
| 1834 |
{ |
| 1835 |
/* The index of the symbol, as stored in the relocation r_info, if |
| 1836 |
we have a local symbol; -1 otherwise. */ |
| 1837 |
long symndx; |
| 1838 |
union |
| 1839 |
{ |
| 1840 |
/* The input bfd in which the symbol is defined, if it's a local |
| 1841 |
symbol. */ |
| 1842 |
bfd *abfd; |
| 1843 |
/* If symndx == -1, the hash table entry corresponding to a global |
| 1844 |
symbol (even if it turns out to bind locally, in which case it |
| 1845 |
should ideally be replaced with section's symndx + addend). */ |
| 1846 |
struct elf_link_hash_entry *h; |
| 1847 |
} d; |
| 1848 |
/* The addend of the relocation that references the symbol. */ |
| 1849 |
bfd_vma addend; |
| 1850 |
|
| 1851 |
/* The fields above are used to identify an entry. The fields below |
| 1852 |
contain information on how an entry is used and, later on, which |
| 1853 |
locations it was assigned. */ |
| 1854 |
/* The following 2 fields record whether the symbol+addend above was |
| 1855 |
ever referenced with a GOT relocation. The 17M4 suffix indicates a |
| 1856 |
GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */ |
| 1857 |
unsigned got17m4; |
| 1858 |
unsigned gothilo; |
| 1859 |
/* Whether a FUNCDESC relocation references symbol+addend. */ |
| 1860 |
unsigned fd; |
| 1861 |
/* Whether a FUNCDESC_GOT relocation references symbol+addend. */ |
| 1862 |
unsigned fdgot17m4; |
| 1863 |
unsigned fdgothilo; |
| 1864 |
/* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ |
| 1865 |
unsigned fdgoff17m4; |
| 1866 |
unsigned fdgoffhilo; |
| 1867 |
/* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or |
| 1868 |
GOTOFFHI relocations. The addend doesn't really matter, since we |
| 1869 |
envision that this will only be used to check whether the symbol |
| 1870 |
is mapped to the same segment as the got. */ |
| 1871 |
unsigned gotoff; |
| 1872 |
/* Whether symbol+addend is referenced by a LABEL24 relocation. */ |
| 1873 |
unsigned call; |
| 1874 |
/* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE |
| 1875 |
relocation. */ |
| 1876 |
unsigned sym; |
| 1877 |
/* Whether we need a PLT entry for a symbol. Should be implied by |
| 1878 |
something like: |
| 1879 |
(call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */ |
| 1880 |
unsigned plt:1; |
| 1881 |
/* Whether a function descriptor should be created in this link unit |
| 1882 |
for symbol+addend. Should be implied by something like: |
| 1883 |
(plt || fdgotoff17m4 || fdgotofflohi |
| 1884 |
|| ((fd || fdgot17m4 || fdgothilo) |
| 1885 |
&& (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ |
| 1886 |
unsigned privfd:1; |
| 1887 |
/* Whether a lazy PLT entry is needed for this symbol+addend. |
| 1888 |
Should be implied by something like: |
| 1889 |
(privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h) |
| 1890 |
&& ! (info->flags & DF_BIND_NOW)) */ |
| 1891 |
unsigned lazyplt:1; |
| 1892 |
/* Whether we've already emitted GOT relocations and PLT entries as |
| 1893 |
needed for this symbol. */ |
| 1894 |
unsigned done:1; |
| 1895 |
|
| 1896 |
/* The number of R_byte4_data, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE |
| 1897 |
relocations referencing the symbol. */ |
| 1898 |
unsigned relocs32, relocsfd, relocsfdv; |
| 1899 |
|
| 1900 |
/* The number of .rofixups entries and dynamic relocations allocated |
| 1901 |
for this symbol, minus any that might have already been used. */ |
| 1902 |
unsigned fixups, dynrelocs; |
| 1903 |
|
| 1904 |
/* The offsets of the GOT entries assigned to symbol+addend, to the |
| 1905 |
function descriptor's address, and to a function descriptor, |
| 1906 |
respectively. Should be zero if unassigned. The offsets are |
| 1907 |
counted from the value that will be assigned to the PIC register, |
| 1908 |
not from the beginning of the .got section. */ |
| 1909 |
bfd_signed_vma got_entry, fdgot_entry, fd_entry; |
| 1910 |
/* The offsets of the PLT entries assigned to symbol+addend, |
| 1911 |
non-lazy and lazy, respectively. If unassigned, should be |
| 1912 |
(bfd_vma)-1. */ |
| 1913 |
bfd_vma plt_entry, lzplt_entry; |
| 1914 |
}; |
| 1915 |
|
| 1916 |
/* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */ |
| 1917 |
static hashval_t |
| 1918 |
bfinfdpic_relocs_info_hash (const void *entry_) |
| 1919 |
{ |
| 1920 |
const struct bfinfdpic_relocs_info *entry = entry_; |
| 1921 |
|
| 1922 |
return (entry->symndx == -1 |
| 1923 |
? (long) entry->d.h->root.root.hash |
| 1924 |
: entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; |
| 1925 |
} |
| 1926 |
|
| 1927 |
/* Test whether the key fields of two bfinfdpic_relocs_info entries are |
| 1928 |
identical. */ |
| 1929 |
static int |
| 1930 |
bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2) |
| 1931 |
{ |
| 1932 |
const struct bfinfdpic_relocs_info *e1 = entry1; |
| 1933 |
const struct bfinfdpic_relocs_info *e2 = entry2; |
| 1934 |
|
| 1935 |
return e1->symndx == e2->symndx && e1->addend == e2->addend |
| 1936 |
&& (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); |
| 1937 |
} |
| 1938 |
|
| 1939 |
/* Find or create an entry in a hash table HT that matches the key |
| 1940 |
fields of the given ENTRY. If it's not found, memory for a new |
| 1941 |
entry is allocated in ABFD's obstack. */ |
| 1942 |
static struct bfinfdpic_relocs_info * |
| 1943 |
bfinfdpic_relocs_info_find (struct htab *ht, |
| 1944 |
bfd *abfd, |
| 1945 |
const struct bfinfdpic_relocs_info *entry, |
| 1946 |
enum insert_option insert) |
| 1947 |
{ |
| 1948 |
struct bfinfdpic_relocs_info **loc = |
| 1949 |
(struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert); |
| 1950 |
|
| 1951 |
if (! loc) |
| 1952 |
return NULL; |
| 1953 |
|
| 1954 |
if (*loc) |
| 1955 |
return *loc; |
| 1956 |
|
| 1957 |
*loc = bfd_zalloc (abfd, sizeof (**loc)); |
| 1958 |
|
| 1959 |
if (! *loc) |
| 1960 |
return *loc; |
| 1961 |
|
| 1962 |
(*loc)->symndx = entry->symndx; |
| 1963 |
(*loc)->d = entry->d; |
| 1964 |
(*loc)->addend = entry->addend; |
| 1965 |
(*loc)->plt_entry = (bfd_vma)-1; |
| 1966 |
(*loc)->lzplt_entry = (bfd_vma)-1; |
| 1967 |
|
| 1968 |
return *loc; |
| 1969 |
} |
| 1970 |
|
| 1971 |
/* Obtain the address of the entry in HT associated with H's symbol + |
| 1972 |
addend, creating a new entry if none existed. ABFD is only used |
| 1973 |
for memory allocation purposes. */ |
| 1974 |
inline static struct bfinfdpic_relocs_info * |
| 1975 |
bfinfdpic_relocs_info_for_global (struct htab *ht, |
| 1976 |
bfd *abfd, |
| 1977 |
struct elf_link_hash_entry *h, |
| 1978 |
bfd_vma addend, |
| 1979 |
enum insert_option insert) |
| 1980 |
{ |
| 1981 |
struct bfinfdpic_relocs_info entry; |
| 1982 |
|
| 1983 |
entry.symndx = -1; |
| 1984 |
entry.d.h = h; |
| 1985 |
entry.addend = addend; |
| 1986 |
|
| 1987 |
return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
| 1988 |
} |
| 1989 |
|
| 1990 |
/* Obtain the address of the entry in HT associated with the SYMNDXth |
| 1991 |
local symbol of the input bfd ABFD, plus the addend, creating a new |
| 1992 |
entry if none existed. */ |
| 1993 |
inline static struct bfinfdpic_relocs_info * |
| 1994 |
bfinfdpic_relocs_info_for_local (struct htab *ht, |
| 1995 |
bfd *abfd, |
| 1996 |
long symndx, |
| 1997 |
bfd_vma addend, |
| 1998 |
enum insert_option insert) |
| 1999 |
{ |
| 2000 |
struct bfinfdpic_relocs_info entry; |
| 2001 |
|
| 2002 |
entry.symndx = symndx; |
| 2003 |
entry.d.abfd = abfd; |
| 2004 |
entry.addend = addend; |
| 2005 |
|
| 2006 |
return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
| 2007 |
} |
| 2008 |
|
| 2009 |
/* Merge fields set by check_relocs() of two entries that end up being |
| 2010 |
mapped to the same (presumably global) symbol. */ |
| 2011 |
|
| 2012 |
inline static void |
| 2013 |
bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2, |
| 2014 |
struct bfinfdpic_relocs_info const *e1) |
| 2015 |
{ |
| 2016 |
e2->got17m4 |= e1->got17m4; |
| 2017 |
e2->gothilo |= e1->gothilo; |
| 2018 |
e2->fd |= e1->fd; |
| 2019 |
e2->fdgot17m4 |= e1->fdgot17m4; |
| 2020 |
e2->fdgothilo |= e1->fdgothilo; |
| 2021 |
e2->fdgoff17m4 |= e1->fdgoff17m4; |
| 2022 |
e2->fdgoffhilo |= e1->fdgoffhilo; |
| 2023 |
e2->gotoff |= e1->gotoff; |
| 2024 |
e2->call |= e1->call; |
| 2025 |
e2->sym |= e1->sym; |
| 2026 |
} |
| 2027 |
|
| 2028 |
/* Every block of 65535 lazy PLT entries shares a single call to the |
| 2029 |
resolver, inserted in the 32768th lazy PLT entry (i.e., entry # |
| 2030 |
32767, counting from 0). All other lazy PLT entries branch to it |
| 2031 |
in a single instruction. */ |
| 2032 |
|
| 2033 |
#define LZPLT_RESOLVER_EXTRA 10 |
| 2034 |
#define LZPLT_NORMAL_SIZE 6 |
| 2035 |
#define LZPLT_ENTRIES 1362 |
| 2036 |
|
| 2037 |
#define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA) |
| 2038 |
#define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2) |
| 2039 |
|
| 2040 |
/* Add a dynamic relocation to the SRELOC section. */ |
| 2041 |
|
| 2042 |
inline static bfd_vma |
| 2043 |
_bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, |
| 2044 |
int reloc_type, long dynindx, bfd_vma addend, |
| 2045 |
struct bfinfdpic_relocs_info *entry) |
| 2046 |
{ |
| 2047 |
Elf_Internal_Rela outrel; |
| 2048 |
bfd_vma reloc_offset; |
| 2049 |
|
| 2050 |
outrel.r_offset = offset; |
| 2051 |
outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); |
| 2052 |
outrel.r_addend = addend; |
| 2053 |
|
| 2054 |
reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
| 2055 |
BFD_ASSERT (reloc_offset < sreloc->size); |
| 2056 |
bfd_elf32_swap_reloc_out (output_bfd, &outrel, |
| 2057 |
sreloc->contents + reloc_offset); |
| 2058 |
sreloc->reloc_count++; |
| 2059 |
|
| 2060 |
/* If the entry's index is zero, this relocation was probably to a |
| 2061 |
linkonce section that got discarded. We reserved a dynamic |
| 2062 |
relocation, but it was for another entry than the one we got at |
| 2063 |
the time of emitting the relocation. Unfortunately there's no |
| 2064 |
simple way for us to catch this situation, since the relocation |
| 2065 |
is cleared right before calling relocate_section, at which point |
| 2066 |
we no longer know what the relocation used to point to. */ |
| 2067 |
if (entry->symndx) |
| 2068 |
{ |
| 2069 |
BFD_ASSERT (entry->dynrelocs > 0); |
| 2070 |
entry->dynrelocs--; |
| 2071 |
} |
| 2072 |
|
| 2073 |
return reloc_offset; |
| 2074 |
} |
| 2075 |
|
| 2076 |
/* Add a fixup to the ROFIXUP section. */ |
| 2077 |
|
| 2078 |
static bfd_vma |
| 2079 |
_bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, |
| 2080 |
struct bfinfdpic_relocs_info *entry) |
| 2081 |
{ |
| 2082 |
bfd_vma fixup_offset; |
| 2083 |
|
| 2084 |
if (rofixup->flags & SEC_EXCLUDE) |
| 2085 |
return -1; |
| 2086 |
|
| 2087 |
fixup_offset = rofixup->reloc_count * 4; |
| 2088 |
if (rofixup->contents) |
| 2089 |
{ |
| 2090 |
BFD_ASSERT (fixup_offset < rofixup->size); |
| 2091 |
bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); |
| 2092 |
} |
| 2093 |
rofixup->reloc_count++; |
| 2094 |
|
| 2095 |
if (entry && entry->symndx) |
| 2096 |
{ |
| 2097 |
/* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc |
| 2098 |
above. */ |
| 2099 |
BFD_ASSERT (entry->fixups > 0); |
| 2100 |
entry->fixups--; |
| 2101 |
} |
| 2102 |
|
| 2103 |
return fixup_offset; |
| 2104 |
} |
| 2105 |
|
| 2106 |
/* Find the segment number in which OSEC, and output section, is |
| 2107 |
located. */ |
| 2108 |
|
| 2109 |
static unsigned |
| 2110 |
_bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec) |
| 2111 |
{ |
| 2112 |
Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); |
| 2113 |
|
| 2114 |
return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
| 2115 |
} |
| 2116 |
|
| 2117 |
inline static bfd_boolean |
| 2118 |
_bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) |
| 2119 |
{ |
| 2120 |
unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec); |
| 2121 |
|
| 2122 |
return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); |
| 2123 |
} |
| 2124 |
|
| 2125 |
/* Generate relocations for GOT entries, function descriptors, and |
| 2126 |
code for PLT and lazy PLT entries. */ |
| 2127 |
|
| 2128 |
inline static bfd_boolean |
| 2129 |
_bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry, |
| 2130 |
bfd *output_bfd, |
| 2131 |
struct bfd_link_info *info, |
| 2132 |
asection *sec, |
| 2133 |
Elf_Internal_Sym *sym, |
| 2134 |
bfd_vma addend) |
| 2135 |
|
| 2136 |
{ |
| 2137 |
bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; |
| 2138 |
int dynindx = -1; |
| 2139 |
|
| 2140 |
if (entry->done) |
| 2141 |
return TRUE; |
| 2142 |
entry->done = 1; |
| 2143 |
|
| 2144 |
if (entry->got_entry || entry->fdgot_entry || entry->fd_entry) |
| 2145 |
{ |
| 2146 |
/* If the symbol is dynamic, consider it for dynamic |
| 2147 |
relocations, otherwise decay to section + offset. */ |
| 2148 |
if (entry->symndx == -1 && entry->d.h->dynindx != -1) |
| 2149 |
dynindx = entry->d.h->dynindx; |
| 2150 |
else |
| 2151 |
{ |
| 2152 |
if (sec->output_section |
| 2153 |
&& ! bfd_is_abs_section (sec->output_section) |
| 2154 |
&& ! bfd_is_und_section (sec->output_section)) |
| 2155 |
dynindx = elf_section_data (sec->output_section)->dynindx; |
| 2156 |
else |
| 2157 |
dynindx = 0; |
| 2158 |
} |
| 2159 |
} |
| 2160 |
|
| 2161 |
/* Generate relocation for GOT entry pointing to the symbol. */ |
| 2162 |
if (entry->got_entry) |
| 2163 |
{ |
| 2164 |
int idx = dynindx; |
| 2165 |
bfd_vma ad = addend; |
| 2166 |
|
| 2167 |
/* If the symbol is dynamic but binds locally, use |
| 2168 |
section+offset. */ |
| 2169 |
if (sec && (entry->symndx != -1 |
| 2170 |
|| BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 2171 |
{ |
| 2172 |
if (entry->symndx == -1) |
| 2173 |
ad += entry->d.h->root.u.def.value; |
| 2174 |
else |
| 2175 |
ad += sym->st_value; |
| 2176 |
ad += sec->output_offset; |
| 2177 |
if (sec->output_section && elf_section_data (sec->output_section)) |
| 2178 |
idx = elf_section_data (sec->output_section)->dynindx; |
| 2179 |
else |
| 2180 |
idx = 0; |
| 2181 |
} |
| 2182 |
|
| 2183 |
/* If we're linking an executable at a fixed address, we can |
| 2184 |
omit the dynamic relocation as long as the symbol is local to |
| 2185 |
this module. */ |
| 2186 |
if (info->executable && !info->pie |
| 2187 |
&& (entry->symndx != -1 |
| 2188 |
|| BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 2189 |
{ |
| 2190 |
if (sec) |
| 2191 |
ad += sec->output_section->vma; |
| 2192 |
if (entry->symndx != -1 |
| 2193 |
|| entry->d.h->root.type != bfd_link_hash_undefweak) |
| 2194 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2195 |
bfinfdpic_gotfixup_section (info), |
| 2196 |
bfinfdpic_got_section (info)->output_section |
| 2197 |
->vma |
| 2198 |
+ bfinfdpic_got_section (info)->output_offset |
| 2199 |
+ bfinfdpic_got_initial_offset (info) |
| 2200 |
+ entry->got_entry, entry); |
| 2201 |
} |
| 2202 |
else |
| 2203 |
_bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info), |
| 2204 |
_bfd_elf_section_offset |
| 2205 |
(output_bfd, info, |
| 2206 |
bfinfdpic_got_section (info), |
| 2207 |
bfinfdpic_got_initial_offset (info) |
| 2208 |
+ entry->got_entry) |
| 2209 |
+ bfinfdpic_got_section (info) |
| 2210 |
->output_section->vma |
| 2211 |
+ bfinfdpic_got_section (info)->output_offset, |
| 2212 |
R_byte4_data, idx, ad, entry); |
| 2213 |
|
| 2214 |
bfd_put_32 (output_bfd, ad, |
| 2215 |
bfinfdpic_got_section (info)->contents |
| 2216 |
+ bfinfdpic_got_initial_offset (info) |
| 2217 |
+ entry->got_entry); |
| 2218 |
} |
| 2219 |
|
| 2220 |
/* Generate relocation for GOT entry pointing to a canonical |
| 2221 |
function descriptor. */ |
| 2222 |
if (entry->fdgot_entry) |
| 2223 |
{ |
| 2224 |
int reloc, idx; |
| 2225 |
bfd_vma ad = 0; |
| 2226 |
|
| 2227 |
if (! (entry->symndx == -1 |
| 2228 |
&& entry->d.h->root.type == bfd_link_hash_undefweak |
| 2229 |
&& BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 2230 |
{ |
| 2231 |
/* If the symbol is dynamic and there may be dynamic symbol |
| 2232 |
resolution because we are, or are linked with, a shared |
| 2233 |
library, emit a FUNCDESC relocation such that the dynamic |
| 2234 |
linker will allocate the function descriptor. If the |
| 2235 |
symbol needs a non-local function descriptor but binds |
| 2236 |
locally (e.g., its visibility is protected, emit a |
| 2237 |
dynamic relocation decayed to section+offset. */ |
| 2238 |
if (entry->symndx == -1 |
| 2239 |
&& ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h) |
| 2240 |
&& BFINFDPIC_SYM_LOCAL (info, entry->d.h) |
| 2241 |
&& !(info->executable && !info->pie)) |
| 2242 |
{ |
| 2243 |
reloc = R_BFIN_FUNCDESC; |
| 2244 |
idx = elf_section_data (entry->d.h->root.u.def.section |
| 2245 |
->output_section)->dynindx; |
| 2246 |
ad = entry->d.h->root.u.def.section->output_offset |
| 2247 |
+ entry->d.h->root.u.def.value; |
| 2248 |
} |
| 2249 |
else if (entry->symndx == -1 |
| 2250 |
&& ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) |
| 2251 |
{ |
| 2252 |
reloc = R_BFIN_FUNCDESC; |
| 2253 |
idx = dynindx; |
| 2254 |
ad = addend; |
| 2255 |
if (ad) |
| 2256 |
return FALSE; |
| 2257 |
} |
| 2258 |
else |
| 2259 |
{ |
| 2260 |
/* Otherwise, we know we have a private function descriptor, |
| 2261 |
so reference it directly. */ |
| 2262 |
if (elf_hash_table (info)->dynamic_sections_created) |
| 2263 |
BFD_ASSERT (entry->privfd); |
| 2264 |
reloc = R_byte4_data; |
| 2265 |
idx = elf_section_data (bfinfdpic_got_section (info) |
| 2266 |
->output_section)->dynindx; |
| 2267 |
ad = bfinfdpic_got_section (info)->output_offset |
| 2268 |
+ bfinfdpic_got_initial_offset (info) + entry->fd_entry; |
| 2269 |
} |
| 2270 |
|
| 2271 |
/* If there is room for dynamic symbol resolution, emit the |
| 2272 |
dynamic relocation. However, if we're linking an |
| 2273 |
executable at a fixed location, we won't have emitted a |
| 2274 |
dynamic symbol entry for the got section, so idx will be |
| 2275 |
zero, which means we can and should compute the address |
| 2276 |
of the private descriptor ourselves. */ |
| 2277 |
if (info->executable && !info->pie |
| 2278 |
&& (entry->symndx != -1 |
| 2279 |
|| BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) |
| 2280 |
{ |
| 2281 |
ad += bfinfdpic_got_section (info)->output_section->vma; |
| 2282 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2283 |
bfinfdpic_gotfixup_section (info), |
| 2284 |
bfinfdpic_got_section (info) |
| 2285 |
->output_section->vma |
| 2286 |
+ bfinfdpic_got_section (info) |
| 2287 |
->output_offset |
| 2288 |
+ bfinfdpic_got_initial_offset (info) |
| 2289 |
+ entry->fdgot_entry, entry); |
| 2290 |
} |
| 2291 |
else |
| 2292 |
_bfinfdpic_add_dyn_reloc (output_bfd, |
| 2293 |
bfinfdpic_gotrel_section (info), |
| 2294 |
_bfd_elf_section_offset |
| 2295 |
(output_bfd, info, |
| 2296 |
bfinfdpic_got_section (info), |
| 2297 |
bfinfdpic_got_initial_offset (info) |
| 2298 |
+ entry->fdgot_entry) |
| 2299 |
+ bfinfdpic_got_section (info) |
| 2300 |
->output_section->vma |
| 2301 |
+ bfinfdpic_got_section (info) |
| 2302 |
->output_offset, |
| 2303 |
reloc, idx, ad, entry); |
| 2304 |
} |
| 2305 |
|
| 2306 |
bfd_put_32 (output_bfd, ad, |
| 2307 |
bfinfdpic_got_section (info)->contents |
| 2308 |
+ bfinfdpic_got_initial_offset (info) |
| 2309 |
+ entry->fdgot_entry); |
| 2310 |
} |
| 2311 |
|
| 2312 |
/* Generate relocation to fill in a private function descriptor in |
| 2313 |
the GOT. */ |
| 2314 |
if (entry->fd_entry) |
| 2315 |
{ |
| 2316 |
int idx = dynindx; |
| 2317 |
bfd_vma ad = addend; |
| 2318 |
bfd_vma ofst; |
| 2319 |
long lowword, highword; |
| 2320 |
|
| 2321 |
/* If the symbol is dynamic but binds locally, use |
| 2322 |
section+offset. */ |
| 2323 |
if (sec && (entry->symndx != -1 |
| 2324 |
|| BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 2325 |
{ |
| 2326 |
if (entry->symndx == -1) |
| 2327 |
ad += entry->d.h->root.u.def.value; |
| 2328 |
else |
| 2329 |
ad += sym->st_value; |
| 2330 |
ad += sec->output_offset; |
| 2331 |
if (sec->output_section && elf_section_data (sec->output_section)) |
| 2332 |
idx = elf_section_data (sec->output_section)->dynindx; |
| 2333 |
else |
| 2334 |
idx = 0; |
| 2335 |
} |
| 2336 |
|
| 2337 |
/* If we're linking an executable at a fixed address, we can |
| 2338 |
omit the dynamic relocation as long as the symbol is local to |
| 2339 |
this module. */ |
| 2340 |
if (info->executable && !info->pie |
| 2341 |
&& (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 2342 |
{ |
| 2343 |
if (sec) |
| 2344 |
ad += sec->output_section->vma; |
| 2345 |
ofst = 0; |
| 2346 |
if (entry->symndx != -1 |
| 2347 |
|| entry->d.h->root.type != bfd_link_hash_undefweak) |
| 2348 |
{ |
| 2349 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2350 |
bfinfdpic_gotfixup_section (info), |
| 2351 |
bfinfdpic_got_section (info) |
| 2352 |
->output_section->vma |
| 2353 |
+ bfinfdpic_got_section (info) |
| 2354 |
->output_offset |
| 2355 |
+ bfinfdpic_got_initial_offset (info) |
| 2356 |
+ entry->fd_entry, entry); |
| 2357 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2358 |
bfinfdpic_gotfixup_section (info), |
| 2359 |
bfinfdpic_got_section (info) |
| 2360 |
->output_section->vma |
| 2361 |
+ bfinfdpic_got_section (info) |
| 2362 |
->output_offset |
| 2363 |
+ bfinfdpic_got_initial_offset (info) |
| 2364 |
+ entry->fd_entry + 4, entry); |
| 2365 |
} |
| 2366 |
} |
| 2367 |
else |
| 2368 |
{ |
| 2369 |
ofst |
| 2370 |
= _bfinfdpic_add_dyn_reloc (output_bfd, |
| 2371 |
entry->lazyplt |
| 2372 |
? bfinfdpic_pltrel_section (info) |
| 2373 |
: bfinfdpic_gotrel_section (info), |
| 2374 |
_bfd_elf_section_offset |
| 2375 |
(output_bfd, info, |
| 2376 |
bfinfdpic_got_section (info), |
| 2377 |
bfinfdpic_got_initial_offset (info) |
| 2378 |
+ entry->fd_entry) |
| 2379 |
+ bfinfdpic_got_section (info) |
| 2380 |
->output_section->vma |
| 2381 |
+ bfinfdpic_got_section (info) |
| 2382 |
->output_offset, |
| 2383 |
R_BFIN_FUNCDESC_VALUE, idx, ad, entry); |
| 2384 |
} |
| 2385 |
|
| 2386 |
/* If we've omitted the dynamic relocation, just emit the fixed |
| 2387 |
addresses of the symbol and of the local GOT base offset. */ |
| 2388 |
if (info->executable && !info->pie && sec && sec->output_section) |
| 2389 |
{ |
| 2390 |
lowword = ad; |
| 2391 |
highword = bfinfdpic_got_section (info)->output_section->vma |
| 2392 |
+ bfinfdpic_got_section (info)->output_offset |
| 2393 |
+ bfinfdpic_got_initial_offset (info); |
| 2394 |
} |
| 2395 |
else if (entry->lazyplt) |
| 2396 |
{ |
| 2397 |
if (ad) |
| 2398 |
return FALSE; |
| 2399 |
|
| 2400 |
fd_lazy_rel_offset = ofst; |
| 2401 |
|
| 2402 |
/* A function descriptor used for lazy or local resolving is |
| 2403 |
initialized such that its high word contains the output |
| 2404 |
section index in which the PLT entries are located, and |
| 2405 |
the low word contains the address of the lazy PLT entry |
| 2406 |
entry point, that must be within the memory region |
| 2407 |
assigned to that section. */ |
| 2408 |
lowword = entry->lzplt_entry + 4 |
| 2409 |
+ bfinfdpic_plt_section (info)->output_offset |
| 2410 |
+ bfinfdpic_plt_section (info)->output_section->vma; |
| 2411 |
highword = _bfinfdpic_osec_to_segment |
| 2412 |
(output_bfd, bfinfdpic_plt_section (info)->output_section); |
| 2413 |
} |
| 2414 |
else |
| 2415 |
{ |
| 2416 |
/* A function descriptor for a local function gets the index |
| 2417 |
of the section. For a non-local function, it's |
| 2418 |
disregarded. */ |
| 2419 |
lowword = ad; |
| 2420 |
if (entry->symndx == -1 && entry->d.h->dynindx != -1 |
| 2421 |
&& entry->d.h->dynindx == idx) |
| 2422 |
highword = 0; |
| 2423 |
else |
| 2424 |
highword = _bfinfdpic_osec_to_segment |
| 2425 |
(output_bfd, sec->output_section); |
| 2426 |
} |
| 2427 |
|
| 2428 |
bfd_put_32 (output_bfd, lowword, |
| 2429 |
bfinfdpic_got_section (info)->contents |
| 2430 |
+ bfinfdpic_got_initial_offset (info) |
| 2431 |
+ entry->fd_entry); |
| 2432 |
bfd_put_32 (output_bfd, highword, |
| 2433 |
bfinfdpic_got_section (info)->contents |
| 2434 |
+ bfinfdpic_got_initial_offset (info) |
| 2435 |
+ entry->fd_entry + 4); |
| 2436 |
} |
| 2437 |
|
| 2438 |
/* Generate code for the PLT entry. */ |
| 2439 |
if (entry->plt_entry != (bfd_vma) -1) |
| 2440 |
{ |
| 2441 |
bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents |
| 2442 |
+ entry->plt_entry; |
| 2443 |
|
| 2444 |
BFD_ASSERT (entry->fd_entry); |
| 2445 |
|
| 2446 |
/* Figure out what kind of PLT entry we need, depending on the |
| 2447 |
location of the function descriptor within the GOT. */ |
| 2448 |
if (entry->fd_entry >= -(1 << (18 - 1)) |
| 2449 |
&& entry->fd_entry + 4 < (1 << (18 - 1))) |
| 2450 |
{ |
| 2451 |
/* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */ |
| 2452 |
bfd_put_32 (output_bfd, |
| 2453 |
0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000), |
| 2454 |
plt_code); |
| 2455 |
bfd_put_32 (output_bfd, |
| 2456 |
0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000), |
| 2457 |
plt_code + 4); |
| 2458 |
plt_code += 8; |
| 2459 |
} |
| 2460 |
else |
| 2461 |
{ |
| 2462 |
/* P1.L = fd_entry; P1.H = fd_entry; |
| 2463 |
P3 = P3 + P1; |
| 2464 |
P1 = [P3]; |
| 2465 |
P3 = [P3 + 4]; */ |
| 2466 |
bfd_put_32 (output_bfd, |
| 2467 |
0xe109 | (entry->fd_entry << 16), |
| 2468 |
plt_code); |
| 2469 |
bfd_put_32 (output_bfd, |
| 2470 |
0xe149 | (entry->fd_entry & 0xFFFF0000), |
| 2471 |
plt_code + 4); |
| 2472 |
bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8); |
| 2473 |
bfd_put_16 (output_bfd, 0x9159, plt_code + 10); |
| 2474 |
bfd_put_16 (output_bfd, 0xac5b, plt_code + 12); |
| 2475 |
plt_code += 14; |
| 2476 |
} |
| 2477 |
/* JUMP (P1) */ |
| 2478 |
bfd_put_16 (output_bfd, 0x0051, plt_code); |
| 2479 |
} |
| 2480 |
|
| 2481 |
/* Generate code for the lazy PLT entry. */ |
| 2482 |
if (entry->lzplt_entry != (bfd_vma) -1) |
| 2483 |
{ |
| 2484 |
bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents |
| 2485 |
+ entry->lzplt_entry; |
| 2486 |
bfd_vma resolverStub_addr; |
| 2487 |
|
| 2488 |
bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
| 2489 |
lzplt_code += 4; |
| 2490 |
|
| 2491 |
resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE |
| 2492 |
* BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC; |
| 2493 |
if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info)) |
| 2494 |
resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA; |
| 2495 |
|
| 2496 |
if (entry->lzplt_entry == resolverStub_addr) |
| 2497 |
{ |
| 2498 |
/* This is a lazy PLT entry that includes a resolver call. |
| 2499 |
P2 = [P3]; |
| 2500 |
R3 = [P3 + 4]; |
| 2501 |
JUMP (P2); */ |
| 2502 |
bfd_put_32 (output_bfd, |
| 2503 |
0xa05b915a, |
| 2504 |
lzplt_code); |
| 2505 |
bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4); |
| 2506 |
} |
| 2507 |
else |
| 2508 |
{ |
| 2509 |
/* JUMP.S resolverStub */ |
| 2510 |
bfd_put_16 (output_bfd, |
| 2511 |
0x2000 |
| 2512 |
| (((resolverStub_addr - entry->lzplt_entry) |
| 2513 |
/ 2) & (((bfd_vma)1 << 12) - 1)), |
| 2514 |
lzplt_code); |
| 2515 |
} |
| 2516 |
} |
| 2517 |
|
| 2518 |
return TRUE; |
| 2519 |
} |
| 2520 |
|
| 2521 |
/* Relocate an Blackfin ELF section. |
| 2522 |
|
| 2523 |
The RELOCATE_SECTION function is called by the new ELF backend linker |
| 2524 |
to handle the relocations for a section. |
| 2525 |
|
| 2526 |
The relocs are always passed as Rela structures; if the section |
| 2527 |
actually uses Rel structures, the r_addend field will always be |
| 2528 |
zero. |
| 2529 |
|
| 2530 |
This function is responsible for adjusting the section contents as |
| 2531 |
necessary, and (if using Rela relocs and generating a relocatable |
| 2532 |
output file) adjusting the reloc addend as necessary. |
| 2533 |
|
| 2534 |
This function does not have to worry about setting the reloc |
| 2535 |
address or the reloc symbol index. |
| 2536 |
|
| 2537 |
LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 2538 |
|
| 2539 |
LOCAL_SECTIONS is an array giving the section in the input file |
| 2540 |
corresponding to the st_shndx field of each local symbol. |
| 2541 |
|
| 2542 |
The global hash table entry for the global symbols can be found |
| 2543 |
via elf_sym_hashes (input_bfd). |
| 2544 |
|
| 2545 |
When generating relocatable output, this function must handle |
| 2546 |
STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 2547 |
going to be the section symbol corresponding to the output |
| 2548 |
section, which means that the addend must be adjusted |
| 2549 |
accordingly. */ |
| 2550 |
|
| 2551 |
static bfd_boolean |
| 2552 |
bfinfdpic_relocate_section (bfd * output_bfd, |
| 2553 |
struct bfd_link_info *info, |
| 2554 |
bfd * input_bfd, |
| 2555 |
asection * input_section, |
| 2556 |
bfd_byte * contents, |
| 2557 |
Elf_Internal_Rela * relocs, |
| 2558 |
Elf_Internal_Sym * local_syms, |
| 2559 |
asection ** local_sections) |
| 2560 |
{ |
| 2561 |
Elf_Internal_Shdr *symtab_hdr; |
| 2562 |
struct elf_link_hash_entry **sym_hashes; |
| 2563 |
Elf_Internal_Rela *rel; |
| 2564 |
Elf_Internal_Rela *relend; |
| 2565 |
unsigned isec_segment, got_segment, plt_segment, |
| 2566 |
check_segment[2]; |
| 2567 |
int silence_segment_error = !(info->shared || info->pie); |
| 2568 |
|
| 2569 |
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 2570 |
sym_hashes = elf_sym_hashes (input_bfd); |
| 2571 |
relend = relocs + input_section->reloc_count; |
| 2572 |
|
| 2573 |
isec_segment = _bfinfdpic_osec_to_segment (output_bfd, |
| 2574 |
input_section->output_section); |
| 2575 |
if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info)) |
| 2576 |
got_segment = _bfinfdpic_osec_to_segment (output_bfd, |
| 2577 |
bfinfdpic_got_section (info) |
| 2578 |
->output_section); |
| 2579 |
else |
| 2580 |
got_segment = -1; |
| 2581 |
if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created) |
| 2582 |
plt_segment = _bfinfdpic_osec_to_segment (output_bfd, |
| 2583 |
bfinfdpic_plt_section (info) |
| 2584 |
->output_section); |
| 2585 |
else |
| 2586 |
plt_segment = -1; |
| 2587 |
|
| 2588 |
for (rel = relocs; rel < relend; rel ++) |
| 2589 |
{ |
| 2590 |
reloc_howto_type *howto; |
| 2591 |
unsigned long r_symndx; |
| 2592 |
Elf_Internal_Sym *sym; |
| 2593 |
asection *sec; |
| 2594 |
struct elf_link_hash_entry *h; |
| 2595 |
bfd_vma relocation; |
| 2596 |
bfd_reloc_status_type r; |
| 2597 |
const char * name = NULL; |
| 2598 |
int r_type; |
| 2599 |
asection *osec; |
| 2600 |
struct bfinfdpic_relocs_info *picrel; |
| 2601 |
bfd_vma orig_addend = rel->r_addend; |
| 2602 |
|
| 2603 |
r_type = ELF32_R_TYPE (rel->r_info); |
| 2604 |
|
| 2605 |
if (r_type == R_BFIN_GNU_VTINHERIT |
| 2606 |
|| r_type == R_BFIN_GNU_VTENTRY) |
| 2607 |
continue; |
| 2608 |
|
| 2609 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 2610 |
howto = bfin_reloc_type_lookup (input_bfd, r_type); |
| 2611 |
if (howto == NULL) |
| 2612 |
{ |
| 2613 |
bfd_set_error (bfd_error_bad_value); |
| 2614 |
return FALSE; |
| 2615 |
} |
| 2616 |
|
| 2617 |
h = NULL; |
| 2618 |
sym = NULL; |
| 2619 |
sec = NULL; |
| 2620 |
|
| 2621 |
if (r_symndx < symtab_hdr->sh_info) |
| 2622 |
{ |
| 2623 |
sym = local_syms + r_symndx; |
| 2624 |
osec = sec = local_sections [r_symndx]; |
| 2625 |
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 2626 |
|
| 2627 |
name = bfd_elf_string_from_elf_section |
| 2628 |
(input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 2629 |
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 2630 |
} |
| 2631 |
else |
| 2632 |
{ |
| 2633 |
bfd_boolean warned; |
| 2634 |
bfd_boolean unresolved_reloc; |
| 2635 |
|
| 2636 |
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 2637 |
r_symndx, symtab_hdr, sym_hashes, |
| 2638 |
h, sec, relocation, |
| 2639 |
unresolved_reloc, warned); |
| 2640 |
osec = sec; |
| 2641 |
} |
| 2642 |
|
| 2643 |
if (sec != NULL && elf_discarded_section (sec)) |
| 2644 |
{ |
| 2645 |
/* For relocs against symbols from removed linkonce sections, |
| 2646 |
or sections discarded by a linker script, we just want the |
| 2647 |
section contents zeroed. Avoid any special processing. */ |
| 2648 |
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 2649 |
rel->r_info = 0; |
| 2650 |
rel->r_addend = 0; |
| 2651 |
continue; |
| 2652 |
} |
| 2653 |
|
| 2654 |
if (info->relocatable) |
| 2655 |
continue; |
| 2656 |
|
| 2657 |
if (h != NULL |
| 2658 |
&& (h->root.type == bfd_link_hash_defined |
| 2659 |
|| h->root.type == bfd_link_hash_defweak) |
| 2660 |
&& !BFINFDPIC_SYM_LOCAL (info, h)) |
| 2661 |
{ |
| 2662 |
osec = sec = NULL; |
| 2663 |
relocation = 0; |
| 2664 |
} |
| 2665 |
|
| 2666 |
switch (r_type) |
| 2667 |
{ |
| 2668 |
case R_pcrel24: |
| 2669 |
case R_pcrel24_jump_l: |
| 2670 |
case R_byte4_data: |
| 2671 |
if (! IS_FDPIC (output_bfd)) |
| 2672 |
goto non_fdpic; |
| 2673 |
|
| 2674 |
case R_BFIN_GOT17M4: |
| 2675 |
case R_BFIN_GOTHI: |
| 2676 |
case R_BFIN_GOTLO: |
| 2677 |
case R_BFIN_FUNCDESC_GOT17M4: |
| 2678 |
case R_BFIN_FUNCDESC_GOTHI: |
| 2679 |
case R_BFIN_FUNCDESC_GOTLO: |
| 2680 |
case R_BFIN_GOTOFF17M4: |
| 2681 |
case R_BFIN_GOTOFFHI: |
| 2682 |
case R_BFIN_GOTOFFLO: |
| 2683 |
case R_BFIN_FUNCDESC_GOTOFF17M4: |
| 2684 |
case R_BFIN_FUNCDESC_GOTOFFHI: |
| 2685 |
case R_BFIN_FUNCDESC_GOTOFFLO: |
| 2686 |
case R_BFIN_FUNCDESC: |
| 2687 |
case R_BFIN_FUNCDESC_VALUE: |
| 2688 |
if (h != NULL) |
| 2689 |
picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info |
| 2690 |
(info), input_bfd, h, |
| 2691 |
orig_addend, INSERT); |
| 2692 |
else |
| 2693 |
/* In order to find the entry we created before, we must |
| 2694 |
use the original addend, not the one that may have been |
| 2695 |
modified by _bfd_elf_rela_local_sym(). */ |
| 2696 |
picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info |
| 2697 |
(info), input_bfd, r_symndx, |
| 2698 |
orig_addend, INSERT); |
| 2699 |
if (! picrel) |
| 2700 |
return FALSE; |
| 2701 |
|
| 2702 |
if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, |
| 2703 |
osec, sym, |
| 2704 |
rel->r_addend)) |
| 2705 |
{ |
| 2706 |
(*_bfd_error_handler) |
| 2707 |
(_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"), |
| 2708 |
input_bfd, input_section, rel->r_offset, name); |
| 2709 |
return FALSE; |
| 2710 |
|
| 2711 |
} |
| 2712 |
|
| 2713 |
break; |
| 2714 |
|
| 2715 |
default: |
| 2716 |
non_fdpic: |
| 2717 |
picrel = NULL; |
| 2718 |
if (h && ! BFINFDPIC_SYM_LOCAL (info, h)) |
| 2719 |
{ |
| 2720 |
info->callbacks->warning |
| 2721 |
(info, _("relocation references symbol not defined in the module"), |
| 2722 |
name, input_bfd, input_section, rel->r_offset); |
| 2723 |
return FALSE; |
| 2724 |
} |
| 2725 |
break; |
| 2726 |
} |
| 2727 |
|
| 2728 |
switch (r_type) |
| 2729 |
{ |
| 2730 |
case R_pcrel24: |
| 2731 |
case R_pcrel24_jump_l: |
| 2732 |
check_segment[0] = isec_segment; |
| 2733 |
if (! IS_FDPIC (output_bfd)) |
| 2734 |
check_segment[1] = isec_segment; |
| 2735 |
else if (picrel->plt) |
| 2736 |
{ |
| 2737 |
relocation = bfinfdpic_plt_section (info)->output_section->vma |
| 2738 |
+ bfinfdpic_plt_section (info)->output_offset |
| 2739 |
+ picrel->plt_entry; |
| 2740 |
check_segment[1] = plt_segment; |
| 2741 |
} |
| 2742 |
/* We don't want to warn on calls to undefined weak symbols, |
| 2743 |
as calls to them must be protected by non-NULL tests |
| 2744 |
anyway, and unprotected calls would invoke undefined |
| 2745 |
behavior. */ |
| 2746 |
else if (picrel->symndx == -1 |
| 2747 |
&& picrel->d.h->root.type == bfd_link_hash_undefweak) |
| 2748 |
check_segment[1] = check_segment[0]; |
| 2749 |
else |
| 2750 |
check_segment[1] = sec |
| 2751 |
? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 2752 |
: (unsigned)-1; |
| 2753 |
break; |
| 2754 |
|
| 2755 |
case R_BFIN_GOT17M4: |
| 2756 |
case R_BFIN_GOTHI: |
| 2757 |
case R_BFIN_GOTLO: |
| 2758 |
relocation = picrel->got_entry; |
| 2759 |
check_segment[0] = check_segment[1] = got_segment; |
| 2760 |
break; |
| 2761 |
|
| 2762 |
case R_BFIN_FUNCDESC_GOT17M4: |
| 2763 |
case R_BFIN_FUNCDESC_GOTHI: |
| 2764 |
case R_BFIN_FUNCDESC_GOTLO: |
| 2765 |
relocation = picrel->fdgot_entry; |
| 2766 |
check_segment[0] = check_segment[1] = got_segment; |
| 2767 |
break; |
| 2768 |
|
| 2769 |
case R_BFIN_GOTOFFHI: |
| 2770 |
case R_BFIN_GOTOFF17M4: |
| 2771 |
case R_BFIN_GOTOFFLO: |
| 2772 |
relocation -= bfinfdpic_got_section (info)->output_section->vma |
| 2773 |
+ bfinfdpic_got_section (info)->output_offset |
| 2774 |
+ bfinfdpic_got_initial_offset (info); |
| 2775 |
check_segment[0] = got_segment; |
| 2776 |
check_segment[1] = sec |
| 2777 |
? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 2778 |
: (unsigned)-1; |
| 2779 |
break; |
| 2780 |
|
| 2781 |
case R_BFIN_FUNCDESC_GOTOFF17M4: |
| 2782 |
case R_BFIN_FUNCDESC_GOTOFFHI: |
| 2783 |
case R_BFIN_FUNCDESC_GOTOFFLO: |
| 2784 |
relocation = picrel->fd_entry; |
| 2785 |
check_segment[0] = check_segment[1] = got_segment; |
| 2786 |
break; |
| 2787 |
|
| 2788 |
case R_BFIN_FUNCDESC: |
| 2789 |
{ |
| 2790 |
int dynindx; |
| 2791 |
bfd_vma addend = rel->r_addend; |
| 2792 |
|
| 2793 |
if (! (h && h->root.type == bfd_link_hash_undefweak |
| 2794 |
&& BFINFDPIC_SYM_LOCAL (info, h))) |
| 2795 |
{ |
| 2796 |
/* If the symbol is dynamic and there may be dynamic |
| 2797 |
symbol resolution because we are or are linked with a |
| 2798 |
shared library, emit a FUNCDESC relocation such that |
| 2799 |
the dynamic linker will allocate the function |
| 2800 |
descriptor. If the symbol needs a non-local function |
| 2801 |
descriptor but binds locally (e.g., its visibility is |
| 2802 |
protected, emit a dynamic relocation decayed to |
| 2803 |
section+offset. */ |
| 2804 |
if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h) |
| 2805 |
&& BFINFDPIC_SYM_LOCAL (info, h) |
| 2806 |
&& !(info->executable && !info->pie)) |
| 2807 |
{ |
| 2808 |
dynindx = elf_section_data (h->root.u.def.section |
| 2809 |
->output_section)->dynindx; |
| 2810 |
addend += h->root.u.def.section->output_offset |
| 2811 |
+ h->root.u.def.value; |
| 2812 |
} |
| 2813 |
else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)) |
| 2814 |
{ |
| 2815 |
if (addend) |
| 2816 |
{ |
| 2817 |
info->callbacks->warning |
| 2818 |
(info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"), |
| 2819 |
name, input_bfd, input_section, rel->r_offset); |
| 2820 |
return FALSE; |
| 2821 |
} |
| 2822 |
dynindx = h->dynindx; |
| 2823 |
} |
| 2824 |
else |
| 2825 |
{ |
| 2826 |
/* Otherwise, we know we have a private function |
| 2827 |
descriptor, so reference it directly. */ |
| 2828 |
BFD_ASSERT (picrel->privfd); |
| 2829 |
r_type = R_byte4_data; |
| 2830 |
dynindx = elf_section_data (bfinfdpic_got_section (info) |
| 2831 |
->output_section)->dynindx; |
| 2832 |
addend = bfinfdpic_got_section (info)->output_offset |
| 2833 |
+ bfinfdpic_got_initial_offset (info) |
| 2834 |
+ picrel->fd_entry; |
| 2835 |
} |
| 2836 |
|
| 2837 |
/* If there is room for dynamic symbol resolution, emit |
| 2838 |
the dynamic relocation. However, if we're linking an |
| 2839 |
executable at a fixed location, we won't have emitted a |
| 2840 |
dynamic symbol entry for the got section, so idx will |
| 2841 |
be zero, which means we can and should compute the |
| 2842 |
address of the private descriptor ourselves. */ |
| 2843 |
if (info->executable && !info->pie |
| 2844 |
&& (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h))) |
| 2845 |
{ |
| 2846 |
addend += bfinfdpic_got_section (info)->output_section->vma; |
| 2847 |
if ((bfd_get_section_flags (output_bfd, |
| 2848 |
input_section->output_section) |
| 2849 |
& (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2850 |
{ |
| 2851 |
if (_bfinfdpic_osec_readonly_p (output_bfd, |
| 2852 |
input_section |
| 2853 |
->output_section)) |
| 2854 |
{ |
| 2855 |
info->callbacks->warning |
| 2856 |
(info, |
| 2857 |
_("cannot emit fixups in read-only section"), |
| 2858 |
name, input_bfd, input_section, rel->r_offset); |
| 2859 |
return FALSE; |
| 2860 |
} |
| 2861 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2862 |
bfinfdpic_gotfixup_section |
| 2863 |
(info), |
| 2864 |
_bfd_elf_section_offset |
| 2865 |
(output_bfd, info, |
| 2866 |
input_section, rel->r_offset) |
| 2867 |
+ input_section |
| 2868 |
->output_section->vma |
| 2869 |
+ input_section->output_offset, |
| 2870 |
picrel); |
| 2871 |
} |
| 2872 |
} |
| 2873 |
else if ((bfd_get_section_flags (output_bfd, |
| 2874 |
input_section->output_section) |
| 2875 |
& (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2876 |
{ |
| 2877 |
bfd_vma offset; |
| 2878 |
|
| 2879 |
if (_bfinfdpic_osec_readonly_p (output_bfd, |
| 2880 |
input_section |
| 2881 |
->output_section)) |
| 2882 |
{ |
| 2883 |
info->callbacks->warning |
| 2884 |
(info, |
| 2885 |
_("cannot emit dynamic relocations in read-only section"), |
| 2886 |
name, input_bfd, input_section, rel->r_offset); |
| 2887 |
return FALSE; |
| 2888 |
} |
| 2889 |
offset = _bfd_elf_section_offset (output_bfd, info, |
| 2890 |
input_section, rel->r_offset); |
| 2891 |
/* Only output a reloc for a not deleted entry. */ |
| 2892 |
if (offset >= (bfd_vma) -2) |
| 2893 |
_bfinfdpic_add_dyn_reloc (output_bfd, |
| 2894 |
bfinfdpic_gotrel_section (info), |
| 2895 |
0, |
| 2896 |
R_unused0, |
| 2897 |
dynindx, addend, picrel); |
| 2898 |
else |
| 2899 |
_bfinfdpic_add_dyn_reloc (output_bfd, |
| 2900 |
bfinfdpic_gotrel_section (info), |
| 2901 |
offset + input_section |
| 2902 |
->output_section->vma |
| 2903 |
+ input_section->output_offset, |
| 2904 |
r_type, |
| 2905 |
dynindx, addend, picrel); |
| 2906 |
} |
| 2907 |
else |
| 2908 |
addend += bfinfdpic_got_section (info)->output_section->vma; |
| 2909 |
} |
| 2910 |
|
| 2911 |
/* We want the addend in-place because dynamic |
| 2912 |
relocations are REL. Setting relocation to it should |
| 2913 |
arrange for it to be installed. */ |
| 2914 |
relocation = addend - rel->r_addend; |
| 2915 |
} |
| 2916 |
check_segment[0] = check_segment[1] = got_segment; |
| 2917 |
break; |
| 2918 |
|
| 2919 |
case R_byte4_data: |
| 2920 |
if (! IS_FDPIC (output_bfd)) |
| 2921 |
{ |
| 2922 |
check_segment[0] = check_segment[1] = -1; |
| 2923 |
break; |
| 2924 |
} |
| 2925 |
/* Fall through. */ |
| 2926 |
case R_BFIN_FUNCDESC_VALUE: |
| 2927 |
{ |
| 2928 |
int dynindx; |
| 2929 |
bfd_vma addend = rel->r_addend; |
| 2930 |
bfd_vma offset; |
| 2931 |
offset = _bfd_elf_section_offset (output_bfd, info, |
| 2932 |
input_section, rel->r_offset); |
| 2933 |
|
| 2934 |
/* If the symbol is dynamic but binds locally, use |
| 2935 |
section+offset. */ |
| 2936 |
if (h && ! BFINFDPIC_SYM_LOCAL (info, h)) |
| 2937 |
{ |
| 2938 |
if (addend && r_type == R_BFIN_FUNCDESC_VALUE) |
| 2939 |
{ |
| 2940 |
info->callbacks->warning |
| 2941 |
(info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), |
| 2942 |
name, input_bfd, input_section, rel->r_offset); |
| 2943 |
return FALSE; |
| 2944 |
} |
| 2945 |
dynindx = h->dynindx; |
| 2946 |
} |
| 2947 |
else |
| 2948 |
{ |
| 2949 |
if (h) |
| 2950 |
addend += h->root.u.def.value; |
| 2951 |
else |
| 2952 |
addend += sym->st_value; |
| 2953 |
if (osec) |
| 2954 |
addend += osec->output_offset; |
| 2955 |
if (osec && osec->output_section |
| 2956 |
&& ! bfd_is_abs_section (osec->output_section) |
| 2957 |
&& ! bfd_is_und_section (osec->output_section)) |
| 2958 |
dynindx = elf_section_data (osec->output_section)->dynindx; |
| 2959 |
else |
| 2960 |
dynindx = 0; |
| 2961 |
} |
| 2962 |
|
| 2963 |
/* If we're linking an executable at a fixed address, we |
| 2964 |
can omit the dynamic relocation as long as the symbol |
| 2965 |
is defined in the current link unit (which is implied |
| 2966 |
by its output section not being NULL). */ |
| 2967 |
if (info->executable && !info->pie |
| 2968 |
&& (!h || BFINFDPIC_SYM_LOCAL (info, h))) |
| 2969 |
{ |
| 2970 |
if (osec) |
| 2971 |
addend += osec->output_section->vma; |
| 2972 |
if (IS_FDPIC (input_bfd) |
| 2973 |
&& (bfd_get_section_flags (output_bfd, |
| 2974 |
input_section->output_section) |
| 2975 |
& (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2976 |
{ |
| 2977 |
if (_bfinfdpic_osec_readonly_p (output_bfd, |
| 2978 |
input_section |
| 2979 |
->output_section)) |
| 2980 |
{ |
| 2981 |
info->callbacks->warning |
| 2982 |
(info, |
| 2983 |
_("cannot emit fixups in read-only section"), |
| 2984 |
name, input_bfd, input_section, rel->r_offset); |
| 2985 |
return FALSE; |
| 2986 |
} |
| 2987 |
if (!h || h->root.type != bfd_link_hash_undefweak) |
| 2988 |
{ |
| 2989 |
/* Only output a reloc for a not deleted entry. */ |
| 2990 |
if (offset >= (bfd_vma)-2) |
| 2991 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2992 |
bfinfdpic_gotfixup_section |
| 2993 |
(info), -1, picrel); |
| 2994 |
else |
| 2995 |
_bfinfdpic_add_rofixup (output_bfd, |
| 2996 |
bfinfdpic_gotfixup_section |
| 2997 |
(info), |
| 2998 |
offset + input_section |
| 2999 |
->output_section->vma |
| 3000 |
+ input_section->output_offset, |
| 3001 |
picrel); |
| 3002 |
|
| 3003 |
if (r_type == R_BFIN_FUNCDESC_VALUE) |
| 3004 |
{ |
| 3005 |
if (offset >= (bfd_vma)-2) |
| 3006 |
_bfinfdpic_add_rofixup |
| 3007 |
(output_bfd, |
| 3008 |
bfinfdpic_gotfixup_section (info), |
| 3009 |
-1, picrel); |
| 3010 |
else |
| 3011 |
_bfinfdpic_add_rofixup |
| 3012 |
(output_bfd, |
| 3013 |
bfinfdpic_gotfixup_section (info), |
| 3014 |
offset + input_section->output_section->vma |
| 3015 |
+ input_section->output_offset + 4, picrel); |
| 3016 |
} |
| 3017 |
} |
| 3018 |
} |
| 3019 |
} |
| 3020 |
else |
| 3021 |
{ |
| 3022 |
if ((bfd_get_section_flags (output_bfd, |
| 3023 |
input_section->output_section) |
| 3024 |
& (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3025 |
{ |
| 3026 |
if (_bfinfdpic_osec_readonly_p (output_bfd, |
| 3027 |
input_section |
| 3028 |
->output_section)) |
| 3029 |
{ |
| 3030 |
info->callbacks->warning |
| 3031 |
(info, |
| 3032 |
_("cannot emit dynamic relocations in read-only section"), |
| 3033 |
name, input_bfd, input_section, rel->r_offset); |
| 3034 |
return FALSE; |
| 3035 |
} |
| 3036 |
/* Only output a reloc for a not deleted entry. */ |
| 3037 |
if (offset >= (bfd_vma)-2) |
| 3038 |
_bfinfdpic_add_dyn_reloc (output_bfd, |
| 3039 |
bfinfdpic_gotrel_section (info), |
| 3040 |
0, R_unused0, dynindx, addend, picrel); |
| 3041 |
else |
| 3042 |
_bfinfdpic_add_dyn_reloc (output_bfd, |
| 3043 |
bfinfdpic_gotrel_section (info), |
| 3044 |
offset |
| 3045 |
+ input_section |
| 3046 |
->output_section->vma |
| 3047 |
+ input_section->output_offset, |
| 3048 |
r_type, dynindx, addend, picrel); |
| 3049 |
} |
| 3050 |
else if (osec) |
| 3051 |
addend += osec->output_section->vma; |
| 3052 |
/* We want the addend in-place because dynamic |
| 3053 |
relocations are REL. Setting relocation to it |
| 3054 |
should arrange for it to be installed. */ |
| 3055 |
relocation = addend - rel->r_addend; |
| 3056 |
} |
| 3057 |
|
| 3058 |
if (r_type == R_BFIN_FUNCDESC_VALUE && offset < (bfd_vma)-2) |
| 3059 |
{ |
| 3060 |
/* If we've omitted the dynamic relocation, just emit |
| 3061 |
the fixed addresses of the symbol and of the local |
| 3062 |
GOT base offset. */ |
| 3063 |
if (info->executable && !info->pie |
| 3064 |
&& (!h || BFINFDPIC_SYM_LOCAL (info, h))) |
| 3065 |
bfd_put_32 (output_bfd, |
| 3066 |
bfinfdpic_got_section (info)->output_section->vma |
| 3067 |
+ bfinfdpic_got_section (info)->output_offset |
| 3068 |
+ bfinfdpic_got_initial_offset (info), |
| 3069 |
contents + rel->r_offset + 4); |
| 3070 |
else |
| 3071 |
/* A function descriptor used for lazy or local |
| 3072 |
resolving is initialized such that its high word |
| 3073 |
contains the output section index in which the |
| 3074 |
PLT entries are located, and the low word |
| 3075 |
contains the offset of the lazy PLT entry entry |
| 3076 |
point into that section. */ |
| 3077 |
bfd_put_32 (output_bfd, |
| 3078 |
h && ! BFINFDPIC_SYM_LOCAL (info, h) |
| 3079 |
? 0 |
| 3080 |
: _bfinfdpic_osec_to_segment (output_bfd, |
| 3081 |
sec |
| 3082 |
->output_section), |
| 3083 |
contents + rel->r_offset + 4); |
| 3084 |
} |
| 3085 |
} |
| 3086 |
check_segment[0] = check_segment[1] = got_segment; |
| 3087 |
break; |
| 3088 |
|
| 3089 |
default: |
| 3090 |
check_segment[0] = isec_segment; |
| 3091 |
check_segment[1] = sec |
| 3092 |
? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3093 |
: (unsigned)-1; |
| 3094 |
break; |
| 3095 |
} |
| 3096 |
|
| 3097 |
if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) |
| 3098 |
{ |
| 3099 |
#if 1 /* If you take this out, remove the #error from fdpic-static-6.d |
| 3100 |
in the ld testsuite. */ |
| 3101 |
/* This helps catch problems in GCC while we can't do more |
| 3102 |
than static linking. The idea is to test whether the |
| 3103 |
input file basename is crt0.o only once. */ |
| 3104 |
if (silence_segment_error == 1) |
| 3105 |
silence_segment_error = |
| 3106 |
(strlen (input_bfd->filename) == 6 |
| 3107 |
&& strcmp (input_bfd->filename, "crt0.o") == 0) |
| 3108 |
|| (strlen (input_bfd->filename) > 6 |
| 3109 |
&& strcmp (input_bfd->filename |
| 3110 |
+ strlen (input_bfd->filename) - 7, |
| 3111 |
"/crt0.o") == 0) |
| 3112 |
? -1 : 0; |
| 3113 |
#endif |
| 3114 |
if (!silence_segment_error |
| 3115 |
/* We don't want duplicate errors for undefined |
| 3116 |
symbols. */ |
| 3117 |
&& !(picrel && picrel->symndx == -1 |
| 3118 |
&& picrel->d.h->root.type == bfd_link_hash_undefined)) |
| 3119 |
info->callbacks->warning |
| 3120 |
(info, |
| 3121 |
(info->shared || info->pie) |
| 3122 |
? _("relocations between different segments are not supported") |
| 3123 |
: _("warning: relocation references a different segment"), |
| 3124 |
name, input_bfd, input_section, rel->r_offset); |
| 3125 |
if (!silence_segment_error && (info->shared || info->pie)) |
| 3126 |
return FALSE; |
| 3127 |
elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC; |
| 3128 |
} |
| 3129 |
|
| 3130 |
switch (r_type) |
| 3131 |
{ |
| 3132 |
case R_BFIN_GOTOFFHI: |
| 3133 |
/* We need the addend to be applied before we shift the |
| 3134 |
value right. */ |
| 3135 |
relocation += rel->r_addend; |
| 3136 |
/* Fall through. */ |
| 3137 |
case R_BFIN_GOTHI: |
| 3138 |
case R_BFIN_FUNCDESC_GOTHI: |
| 3139 |
case R_BFIN_FUNCDESC_GOTOFFHI: |
| 3140 |
relocation >>= 16; |
| 3141 |
/* Fall through. */ |
| 3142 |
|
| 3143 |
case R_BFIN_GOTLO: |
| 3144 |
case R_BFIN_FUNCDESC_GOTLO: |
| 3145 |
case R_BFIN_GOTOFFLO: |
| 3146 |
case R_BFIN_FUNCDESC_GOTOFFLO: |
| 3147 |
relocation &= 0xffff; |
| 3148 |
break; |
| 3149 |
|
| 3150 |
default: |
| 3151 |
break; |
| 3152 |
} |
| 3153 |
|
| 3154 |
switch (r_type) |
| 3155 |
{ |
| 3156 |
case R_pcrel24: |
| 3157 |
case R_pcrel24_jump_l: |
| 3158 |
if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
| 3159 |
break; |
| 3160 |
/* Fall through. */ |
| 3161 |
|
| 3162 |
/* When referencing a GOT entry, a function descriptor or a |
| 3163 |
PLT, we don't want the addend to apply to the reference, |
| 3164 |
but rather to the referenced symbol. The actual entry |
| 3165 |
will have already been created taking the addend into |
| 3166 |
account, so cancel it out here. */ |
| 3167 |
case R_BFIN_GOT17M4: |
| 3168 |
case R_BFIN_GOTHI: |
| 3169 |
case R_BFIN_GOTLO: |
| 3170 |
case R_BFIN_FUNCDESC_GOT17M4: |
| 3171 |
case R_BFIN_FUNCDESC_GOTHI: |
| 3172 |
case R_BFIN_FUNCDESC_GOTLO: |
| 3173 |
case R_BFIN_FUNCDESC_GOTOFF17M4: |
| 3174 |
case R_BFIN_FUNCDESC_GOTOFFHI: |
| 3175 |
case R_BFIN_FUNCDESC_GOTOFFLO: |
| 3176 |
/* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4 |
| 3177 |
here, since we do want to apply the addend to the others. |
| 3178 |
Note that we've applied the addend to GOTOFFHI before we |
| 3179 |
shifted it right. */ |
| 3180 |
case R_BFIN_GOTOFFHI: |
| 3181 |
relocation -= rel->r_addend; |
| 3182 |
break; |
| 3183 |
|
| 3184 |
default: |
| 3185 |
break; |
| 3186 |
} |
| 3187 |
|
| 3188 |
r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, |
| 3189 |
contents, rel->r_offset, |
| 3190 |
relocation, rel->r_addend); |
| 3191 |
|
| 3192 |
if (r != bfd_reloc_ok) |
| 3193 |
{ |
| 3194 |
const char * msg = (const char *) NULL; |
| 3195 |
|
| 3196 |
switch (r) |
| 3197 |
{ |
| 3198 |
case bfd_reloc_overflow: |
| 3199 |
r = info->callbacks->reloc_overflow |
| 3200 |
(info, (h ? &h->root : NULL), name, howto->name, |
| 3201 |
(bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
| 3202 |
break; |
| 3203 |
|
| 3204 |
case bfd_reloc_undefined: |
| 3205 |
r = info->callbacks->undefined_symbol |
| 3206 |
(info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 3207 |
break; |
| 3208 |
|
| 3209 |
case bfd_reloc_outofrange: |
| 3210 |
msg = _("internal error: out of range error"); |
| 3211 |
break; |
| 3212 |
|
| 3213 |
case bfd_reloc_notsupported: |
| 3214 |
msg = _("internal error: unsupported relocation error"); |
| 3215 |
break; |
| 3216 |
|
| 3217 |
case bfd_reloc_dangerous: |
| 3218 |
msg = _("internal error: dangerous relocation"); |
| 3219 |
break; |
| 3220 |
|
| 3221 |
default: |
| 3222 |
msg = _("internal error: unknown error"); |
| 3223 |
break; |
| 3224 |
} |
| 3225 |
|
| 3226 |
if (msg) |
| 3227 |
r = info->callbacks->warning |
| 3228 |
(info, msg, name, input_bfd, input_section, rel->r_offset); |
| 3229 |
|
| 3230 |
if (! r) |
| 3231 |
return FALSE; |
| 3232 |
} |
| 3233 |
} |
| 3234 |
|
| 3235 |
return TRUE; |
| 3236 |
} |
| 3237 |
|
| 3238 |
/* Update the relocation information for the relocations of the section |
| 3239 |
being removed. */ |
| 3240 |
|
| 3241 |
static bfd_boolean |
| 3242 |
bfinfdpic_gc_sweep_hook (bfd *abfd, |
| 3243 |
struct bfd_link_info *info, |
| 3244 |
asection *sec, |
| 3245 |
const Elf_Internal_Rela *relocs) |
| 3246 |
{ |
| 3247 |
Elf_Internal_Shdr *symtab_hdr; |
| 3248 |
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| 3249 |
const Elf_Internal_Rela *rel; |
| 3250 |
const Elf_Internal_Rela *rel_end; |
| 3251 |
struct bfinfdpic_relocs_info *picrel; |
| 3252 |
|
| 3253 |
BFD_ASSERT (IS_FDPIC (abfd)); |
| 3254 |
|
| 3255 |
symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3256 |
sym_hashes = elf_sym_hashes (abfd); |
| 3257 |
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); |
| 3258 |
if (!elf_bad_symtab (abfd)) |
| 3259 |
sym_hashes_end -= symtab_hdr->sh_info; |
| 3260 |
|
| 3261 |
rel_end = relocs + sec->reloc_count; |
| 3262 |
for (rel = relocs; rel < rel_end; rel++) |
| 3263 |
{ |
| 3264 |
struct elf_link_hash_entry *h; |
| 3265 |
unsigned long r_symndx; |
| 3266 |
|
| 3267 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 3268 |
if (r_symndx < symtab_hdr->sh_info) |
| 3269 |
h = NULL; |
| 3270 |
else |
| 3271 |
h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3272 |
|
| 3273 |
if (h != NULL) |
| 3274 |
picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), |
| 3275 |
abfd, h, |
| 3276 |
rel->r_addend, NO_INSERT); |
| 3277 |
else |
| 3278 |
picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info |
| 3279 |
(info), abfd, r_symndx, |
| 3280 |
rel->r_addend, NO_INSERT); |
| 3281 |
|
| 3282 |
if (!picrel) |
| 3283 |
return TRUE; |
| 3284 |
|
| 3285 |
switch (ELF32_R_TYPE (rel->r_info)) |
| 3286 |
{ |
| 3287 |
case R_pcrel24: |
| 3288 |
case R_pcrel24_jump_l: |
| 3289 |
picrel->call--; |
| 3290 |
break; |
| 3291 |
|
| 3292 |
case R_BFIN_FUNCDESC_VALUE: |
| 3293 |
picrel->relocsfdv--; |
| 3294 |
if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 3295 |
picrel->relocs32++; |
| 3296 |
/* Fall through. */ |
| 3297 |
|
| 3298 |
case R_byte4_data: |
| 3299 |
picrel->sym--; |
| 3300 |
if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 3301 |
picrel->relocs32--; |
| 3302 |
break; |
| 3303 |
|
| 3304 |
case R_BFIN_GOT17M4: |
| 3305 |
picrel->got17m4--; |
| 3306 |
break; |
| 3307 |
|
| 3308 |
case R_BFIN_GOTHI: |
| 3309 |
case R_BFIN_GOTLO: |
| 3310 |
picrel->gothilo--; |
| 3311 |
break; |
| 3312 |
|
| 3313 |
case R_BFIN_FUNCDESC_GOT17M4: |
| 3314 |
picrel->fdgot17m4--; |
| 3315 |
break; |
| 3316 |
|
| 3317 |
case R_BFIN_FUNCDESC_GOTHI: |
| 3318 |
case R_BFIN_FUNCDESC_GOTLO: |
| 3319 |
picrel->fdgothilo--; |
| 3320 |
break; |
| 3321 |
|
| 3322 |
case R_BFIN_GOTOFF17M4: |
| 3323 |
case R_BFIN_GOTOFFHI: |
| 3324 |
case R_BFIN_GOTOFFLO: |
| 3325 |
picrel->gotoff--; |
| 3326 |
break; |
| 3327 |
|
| 3328 |
case R_BFIN_FUNCDESC_GOTOFF17M4: |
| 3329 |
picrel->fdgoff17m4--; |
| 3330 |
break; |
| 3331 |
|
| 3332 |
case R_BFIN_FUNCDESC_GOTOFFHI: |
| 3333 |
case R_BFIN_FUNCDESC_GOTOFFLO: |
| 3334 |
picrel->fdgoffhilo--; |
| 3335 |
break; |
| 3336 |
|
| 3337 |
case R_BFIN_FUNCDESC: |
| 3338 |
picrel->fd--; |
| 3339 |
picrel->relocsfd--; |
| 3340 |
break; |
| 3341 |
|
| 3342 |
default: |
| 3343 |
break; |
| 3344 |
} |
| 3345 |
} |
| 3346 |
|
| 3347 |
return TRUE; |
| 3348 |
} |
| 3349 |
|
| 3350 |
/* We need dynamic symbols for every section, since segments can |
| 3351 |
relocate independently. */ |
| 3352 |
static bfd_boolean |
| 3353 |
_bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 3354 |
struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3355 |
asection *p) |
| 3356 |
{ |
| 3357 |
switch (elf_section_data (p)->this_hdr.sh_type) |
| 3358 |
{ |
| 3359 |
case SHT_PROGBITS: |
| 3360 |
case SHT_NOBITS: |
| 3361 |
/* If sh_type is yet undecided, assume it could be |
| 3362 |
SHT_PROGBITS/SHT_NOBITS. */ |
| 3363 |
case SHT_NULL: |
| 3364 |
return FALSE; |
| 3365 |
|
| 3366 |
/* There shouldn't be section relative relocations |
| 3367 |
against any other section. */ |
| 3368 |
default: |
| 3369 |
return TRUE; |
| 3370 |
} |
| 3371 |
} |
| 3372 |
|
| 3373 |
/* Create a .got section, as well as its additional info field. This |
| 3374 |
is almost entirely copied from |
| 3375 |
elflink.c:_bfd_elf_create_got_section(). */ |
| 3376 |
|
| 3377 |
static bfd_boolean |
| 3378 |
_bfin_create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 3379 |
{ |
| 3380 |
flagword flags, pltflags; |
| 3381 |
asection *s; |
| 3382 |
struct elf_link_hash_entry *h; |
| 3383 |
const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 3384 |
int ptralign; |
| 3385 |
int offset; |
| 3386 |
|
| 3387 |
/* This function may be called more than once. */ |
| 3388 |
s = bfd_get_section_by_name (abfd, ".got"); |
| 3389 |
if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0) |
| 3390 |
return TRUE; |
| 3391 |
|
| 3392 |
/* Machine specific: although pointers are 32-bits wide, we want the |
| 3393 |
GOT to be aligned to a 64-bit boundary, such that function |
| 3394 |
descriptors in it can be accessed with 64-bit loads and |
| 3395 |
stores. */ |
| 3396 |
ptralign = 3; |
| 3397 |
|
| 3398 |
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 3399 |
| SEC_LINKER_CREATED); |
| 3400 |
pltflags = flags; |
| 3401 |
|
| 3402 |
s = bfd_make_section_with_flags (abfd, ".got", flags); |
| 3403 |
if (s == NULL |
| 3404 |
|| !bfd_set_section_alignment (abfd, s, ptralign)) |
| 3405 |
return FALSE; |
| 3406 |
|
| 3407 |
if (bed->want_got_plt) |
| 3408 |
{ |
| 3409 |
s = bfd_make_section_with_flags (abfd, ".got.plt", flags); |
| 3410 |
if (s == NULL |
| 3411 |
|| !bfd_set_section_alignment (abfd, s, ptralign)) |
| 3412 |
return FALSE; |
| 3413 |
} |
| 3414 |
|
| 3415 |
if (bed->want_got_sym) |
| 3416 |
{ |
| 3417 |
/* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
| 3418 |
(or .got.plt) section. We don't do this in the linker script |
| 3419 |
because we don't want to define the symbol if we are not creating |
| 3420 |
a global offset table. */ |
| 3421 |
h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_"); |
| 3422 |
elf_hash_table (info)->hgot = h; |
| 3423 |
if (h == NULL) |
| 3424 |
return FALSE; |
| 3425 |
|
| 3426 |
/* Machine-specific: we want the symbol for executables as |
| 3427 |
well. */ |
| 3428 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 3429 |
return FALSE; |
| 3430 |
} |
| 3431 |
|
| 3432 |
/* The first bit of the global offset table is the header. */ |
| 3433 |
s->size += bed->got_header_size; |
| 3434 |
|
| 3435 |
/* This is the machine-specific part. Create and initialize section |
| 3436 |
data for the got. */ |
| 3437 |
if (IS_FDPIC (abfd)) |
| 3438 |
{ |
| 3439 |
bfinfdpic_got_section (info) = s; |
| 3440 |
bfinfdpic_relocs_info (info) = htab_try_create (1, |
| 3441 |
bfinfdpic_relocs_info_hash, |
| 3442 |
bfinfdpic_relocs_info_eq, |
| 3443 |
(htab_del) NULL); |
| 3444 |
if (! bfinfdpic_relocs_info (info)) |
| 3445 |
return FALSE; |
| 3446 |
|
| 3447 |
s = bfd_make_section_with_flags (abfd, ".rel.got", |
| 3448 |
(flags | SEC_READONLY)); |
| 3449 |
if (s == NULL |
| 3450 |
|| ! bfd_set_section_alignment (abfd, s, 2)) |
| 3451 |
return FALSE; |
| 3452 |
|
| 3453 |
bfinfdpic_gotrel_section (info) = s; |
| 3454 |
|
| 3455 |
/* Machine-specific. */ |
| 3456 |
s = bfd_make_section_with_flags (abfd, ".rofixup", |
| 3457 |
(flags | SEC_READONLY)); |
| 3458 |
if (s == NULL |
| 3459 |
|| ! bfd_set_section_alignment (abfd, s, 2)) |
| 3460 |
return FALSE; |
| 3461 |
|
| 3462 |
bfinfdpic_gotfixup_section (info) = s; |
| 3463 |
offset = -2048; |
| 3464 |
flags = BSF_GLOBAL; |
| 3465 |
} |
| 3466 |
else |
| 3467 |
{ |
| 3468 |
offset = 2048; |
| 3469 |
flags = BSF_GLOBAL | BSF_WEAK; |
| 3470 |
} |
| 3471 |
|
| 3472 |
return TRUE; |
| 3473 |
} |
| 3474 |
|
| 3475 |
/* Make sure the got and plt sections exist, and that our pointers in |
| 3476 |
the link hash table point to them. */ |
| 3477 |
|
| 3478 |
static bfd_boolean |
| 3479 |
elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 3480 |
{ |
| 3481 |
/* This is mostly copied from |
| 3482 |
elflink.c:_bfd_elf_create_dynamic_sections(). */ |
| 3483 |
flagword flags, pltflags; |
| 3484 |
asection *s; |
| 3485 |
const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 3486 |
|
| 3487 |
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 3488 |
.rel[a].bss sections. */ |
| 3489 |
|
| 3490 |
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 3491 |
| SEC_LINKER_CREATED); |
| 3492 |
|
| 3493 |
pltflags = flags; |
| 3494 |
pltflags |= SEC_CODE; |
| 3495 |
if (bed->plt_not_loaded) |
| 3496 |
pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); |
| 3497 |
if (bed->plt_readonly) |
|