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/* Renesas / SuperH SH specific support for 32-bit ELF |
| 2 |
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
| 3 |
2006, 2007, 2008 Free Software Foundation, Inc. |
| 4 |
Contributed by Ian Lance Taylor, Cygnus Support. |
| 5 |
|
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This file is part of BFD, the Binary File Descriptor library. |
| 7 |
|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3 of the License, or |
| 11 |
(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
| 19 |
along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 |
MA 02110-1301, USA. */ |
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|
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#include "sysdep.h" |
| 24 |
#include "bfd.h" |
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#include "bfdlink.h" |
| 26 |
#include "libbfd.h" |
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#include "elf-bfd.h" |
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#include "elf-vxworks.h" |
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#include "elf/sh.h" |
| 30 |
#include "libiberty.h" |
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#include "../opcodes/sh-opc.h" |
| 32 |
|
| 33 |
static bfd_reloc_status_type sh_elf_reloc |
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
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static bfd_reloc_status_type sh_elf_ignore_reloc |
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
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static bfd_boolean sh_elf_relax_delete_bytes |
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(bfd *, asection *, bfd_vma, int); |
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static bfd_boolean sh_elf_align_loads |
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(bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_boolean *); |
| 41 |
#ifndef SH64_ELF |
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static bfd_boolean sh_elf_swap_insns |
| 43 |
(bfd *, asection *, void *, bfd_byte *, bfd_vma); |
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#endif |
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static int sh_elf_optimized_tls_reloc |
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(struct bfd_link_info *, int, int); |
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static bfd_vma dtpoff_base |
| 48 |
(struct bfd_link_info *); |
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static bfd_vma tpoff |
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(struct bfd_link_info *, bfd_vma); |
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|
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/* The name of the dynamic interpreter. This is put in the .interp |
| 53 |
section. */ |
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|
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#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" |
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|
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#define MINUS_ONE ((bfd_vma) 0 - 1) |
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|
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#define SH_PARTIAL32 TRUE |
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#define SH_SRC_MASK32 0xffffffff |
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#define SH_ELF_RELOC sh_elf_reloc |
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static reloc_howto_type sh_elf_howto_table[] = |
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{ |
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#include "elf32-sh-relocs.h" |
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}; |
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|
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#define SH_PARTIAL32 FALSE |
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#define SH_SRC_MASK32 0 |
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#define SH_ELF_RELOC bfd_elf_generic_reloc |
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static reloc_howto_type sh_vxworks_howto_table[] = |
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{ |
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#include "elf32-sh-relocs.h" |
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}; |
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|
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/* Return true if OUTPUT_BFD is a VxWorks object. */ |
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|
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static bfd_boolean |
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vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED) |
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{ |
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#if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED |
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extern const bfd_target bfd_elf32_shlvxworks_vec; |
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extern const bfd_target bfd_elf32_shvxworks_vec; |
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|
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return (abfd->xvec == &bfd_elf32_shlvxworks_vec |
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|| abfd->xvec == &bfd_elf32_shvxworks_vec); |
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#else |
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return FALSE; |
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#endif |
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} |
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|
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/* Return the howto table for ABFD. */ |
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|
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static reloc_howto_type * |
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get_howto_table (bfd *abfd) |
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{ |
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if (vxworks_object_p (abfd)) |
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return sh_vxworks_howto_table; |
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return sh_elf_howto_table; |
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} |
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|
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static bfd_reloc_status_type |
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sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd, |
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asection *input_section, bfd_byte *contents, |
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bfd_vma addr, asection *symbol_section, |
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bfd_vma start, bfd_vma end) |
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{ |
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static bfd_vma last_addr; |
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static asection *last_symbol_section; |
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bfd_byte *start_ptr, *ptr, *last_ptr; |
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int diff, cum_diff; |
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bfd_signed_vma x; |
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int insn; |
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|
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/* Sanity check the address. */ |
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if (addr > bfd_get_section_limit (input_bfd, input_section)) |
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return bfd_reloc_outofrange; |
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|
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/* We require the start and end relocations to be processed consecutively - |
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although we allow then to be processed forwards or backwards. */ |
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if (! last_addr) |
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{ |
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last_addr = addr; |
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last_symbol_section = symbol_section; |
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return bfd_reloc_ok; |
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} |
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if (last_addr != addr) |
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abort (); |
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last_addr = 0; |
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|
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if (! symbol_section || last_symbol_section != symbol_section || end < start) |
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return bfd_reloc_outofrange; |
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|
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/* Get the symbol_section contents. */ |
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if (symbol_section != input_section) |
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{ |
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if (elf_section_data (symbol_section)->this_hdr.contents != NULL) |
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contents = elf_section_data (symbol_section)->this_hdr.contents; |
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else |
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{ |
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if (!bfd_malloc_and_get_section (input_bfd, symbol_section, |
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&contents)) |
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{ |
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if (contents != NULL) |
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free (contents); |
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return bfd_reloc_outofrange; |
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} |
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} |
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} |
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#define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800) |
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start_ptr = contents + start; |
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for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;) |
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{ |
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for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);) |
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ptr -= 2; |
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ptr += 2; |
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diff = (last_ptr - ptr) >> 1; |
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cum_diff += diff & 1; |
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cum_diff += diff; |
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} |
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/* Calculate the start / end values to load into rs / re minus four - |
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so that will cancel out the four we would otherwise have to add to |
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addr to get the value to subtract in order to get relative addressing. */ |
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if (cum_diff >= 0) |
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{ |
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start -= 4; |
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end = (ptr + cum_diff * 2) - contents; |
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} |
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else |
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{ |
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bfd_vma start0 = start - 4; |
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|
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while (start0 && IS_PPI (contents + start0)) |
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start0 -= 2; |
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start0 = start - 2 - ((start - start0) & 2); |
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start = start0 - cum_diff - 2; |
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end = start0; |
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} |
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|
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if (contents != NULL |
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&& elf_section_data (symbol_section)->this_hdr.contents != contents) |
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free (contents); |
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|
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insn = bfd_get_16 (input_bfd, contents + addr); |
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|
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x = (insn & 0x200 ? end : start) - addr; |
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if (input_section != symbol_section) |
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x += ((symbol_section->output_section->vma + symbol_section->output_offset) |
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- (input_section->output_section->vma |
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+ input_section->output_offset)); |
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x >>= 1; |
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if (x < -128 || x > 127) |
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return bfd_reloc_overflow; |
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|
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x = (insn & ~0xff) | (x & 0xff); |
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bfd_put_16 (input_bfd, (bfd_vma) x, contents + 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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/* This function is used for normal relocs. This used to be like the COFF |
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function, and is almost certainly incorrect for other ELF targets. */ |
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|
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static bfd_reloc_status_type |
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sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in, |
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void *data, asection *input_section, bfd *output_bfd, |
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char **error_message ATTRIBUTE_UNUSED) |
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{ |
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unsigned long insn; |
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bfd_vma sym_value; |
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enum elf_sh_reloc_type r_type; |
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bfd_vma addr = reloc_entry->address; |
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bfd_byte *hit_data = addr + (bfd_byte *) data; |
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|
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r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type; |
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|
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if (output_bfd != NULL) |
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{ |
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/* Partial linking--do nothing. */ |
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reloc_entry->address += input_section->output_offset; |
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return bfd_reloc_ok; |
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} |
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|
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/* Almost all relocs have to do with relaxing. If any work must be |
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done for them, it has been done in sh_relax_section. */ |
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if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0) |
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return bfd_reloc_ok; |
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|
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if (symbol_in != NULL |
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&& bfd_is_und_section (symbol_in->section)) |
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return bfd_reloc_undefined; |
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|
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if (bfd_is_com_section (symbol_in->section)) |
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sym_value = 0; |
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else |
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sym_value = (symbol_in->value + |
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symbol_in->section->output_section->vma + |
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symbol_in->section->output_offset); |
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|
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switch (r_type) |
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{ |
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case R_SH_DIR32: |
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insn = bfd_get_32 (abfd, hit_data); |
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insn += sym_value + reloc_entry->addend; |
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bfd_put_32 (abfd, (bfd_vma) insn, hit_data); |
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break; |
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case R_SH_IND12W: |
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insn = bfd_get_16 (abfd, hit_data); |
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sym_value += reloc_entry->addend; |
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sym_value -= (input_section->output_section->vma |
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+ input_section->output_offset |
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+ addr |
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+ 4); |
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sym_value += (insn & 0xfff) << 1; |
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if (insn & 0x800) |
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sym_value -= 0x1000; |
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insn = (insn & 0xf000) | (sym_value & 0xfff); |
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bfd_put_16 (abfd, (bfd_vma) insn, hit_data); |
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if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000) |
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return bfd_reloc_overflow; |
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break; |
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default: |
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abort (); |
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break; |
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} |
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|
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return bfd_reloc_ok; |
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} |
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|
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/* This function is used for relocs which are only used for relaxing, |
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which the linker should otherwise ignore. */ |
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|
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static bfd_reloc_status_type |
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sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, |
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asymbol *symbol ATTRIBUTE_UNUSED, |
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void *data ATTRIBUTE_UNUSED, asection *input_section, |
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bfd *output_bfd, |
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char **error_message ATTRIBUTE_UNUSED) |
| 278 |
{ |
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if (output_bfd != NULL) |
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reloc_entry->address += input_section->output_offset; |
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return bfd_reloc_ok; |
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} |
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|
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/* This structure is used to map BFD reloc codes to SH ELF relocs. */ |
| 285 |
|
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struct elf_reloc_map |
| 287 |
{ |
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bfd_reloc_code_real_type bfd_reloc_val; |
| 289 |
unsigned char elf_reloc_val; |
| 290 |
}; |
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|
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/* An array mapping BFD reloc codes to SH ELF relocs. */ |
| 293 |
|
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static const struct elf_reloc_map sh_reloc_map[] = |
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{ |
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{ BFD_RELOC_NONE, R_SH_NONE }, |
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{ BFD_RELOC_32, R_SH_DIR32 }, |
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{ BFD_RELOC_16, R_SH_DIR16 }, |
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{ BFD_RELOC_8, R_SH_DIR8 }, |
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{ BFD_RELOC_CTOR, R_SH_DIR32 }, |
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{ BFD_RELOC_32_PCREL, R_SH_REL32 }, |
| 302 |
{ BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN }, |
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{ BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W }, |
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{ BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ }, |
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{ BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL }, |
| 306 |
{ BFD_RELOC_8_PCREL, R_SH_SWITCH8 }, |
| 307 |
{ BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 }, |
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{ BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 }, |
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{ BFD_RELOC_SH_USES, R_SH_USES }, |
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{ BFD_RELOC_SH_COUNT, R_SH_COUNT }, |
| 311 |
{ BFD_RELOC_SH_ALIGN, R_SH_ALIGN }, |
| 312 |
{ BFD_RELOC_SH_CODE, R_SH_CODE }, |
| 313 |
{ BFD_RELOC_SH_DATA, R_SH_DATA }, |
| 314 |
{ BFD_RELOC_SH_LABEL, R_SH_LABEL }, |
| 315 |
{ BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT }, |
| 316 |
{ BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY }, |
| 317 |
{ BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START }, |
| 318 |
{ BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END }, |
| 319 |
{ BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 }, |
| 320 |
{ BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 }, |
| 321 |
{ BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 }, |
| 322 |
{ BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 }, |
| 323 |
{ BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 }, |
| 324 |
{ BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 }, |
| 325 |
{ BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 }, |
| 326 |
{ BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 }, |
| 327 |
{ BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 }, |
| 328 |
{ BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 }, |
| 329 |
{ BFD_RELOC_SH_COPY, R_SH_COPY }, |
| 330 |
{ BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT }, |
| 331 |
{ BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT }, |
| 332 |
{ BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE }, |
| 333 |
{ BFD_RELOC_32_GOTOFF, R_SH_GOTOFF }, |
| 334 |
{ BFD_RELOC_SH_GOTPC, R_SH_GOTPC }, |
| 335 |
{ BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 }, |
| 336 |
#ifdef INCLUDE_SHMEDIA |
| 337 |
{ BFD_RELOC_SH_GOT_LOW16, R_SH_GOT_LOW16 }, |
| 338 |
{ BFD_RELOC_SH_GOT_MEDLOW16, R_SH_GOT_MEDLOW16 }, |
| 339 |
{ BFD_RELOC_SH_GOT_MEDHI16, R_SH_GOT_MEDHI16 }, |
| 340 |
{ BFD_RELOC_SH_GOT_HI16, R_SH_GOT_HI16 }, |
| 341 |
{ BFD_RELOC_SH_GOTPLT_LOW16, R_SH_GOTPLT_LOW16 }, |
| 342 |
{ BFD_RELOC_SH_GOTPLT_MEDLOW16, R_SH_GOTPLT_MEDLOW16 }, |
| 343 |
{ BFD_RELOC_SH_GOTPLT_MEDHI16, R_SH_GOTPLT_MEDHI16 }, |
| 344 |
{ BFD_RELOC_SH_GOTPLT_HI16, R_SH_GOTPLT_HI16 }, |
| 345 |
{ BFD_RELOC_SH_PLT_LOW16, R_SH_PLT_LOW16 }, |
| 346 |
{ BFD_RELOC_SH_PLT_MEDLOW16, R_SH_PLT_MEDLOW16 }, |
| 347 |
{ BFD_RELOC_SH_PLT_MEDHI16, R_SH_PLT_MEDHI16 }, |
| 348 |
{ BFD_RELOC_SH_PLT_HI16, R_SH_PLT_HI16 }, |
| 349 |
{ BFD_RELOC_SH_GOTOFF_LOW16, R_SH_GOTOFF_LOW16 }, |
| 350 |
{ BFD_RELOC_SH_GOTOFF_MEDLOW16, R_SH_GOTOFF_MEDLOW16 }, |
| 351 |
{ BFD_RELOC_SH_GOTOFF_MEDHI16, R_SH_GOTOFF_MEDHI16 }, |
| 352 |
{ BFD_RELOC_SH_GOTOFF_HI16, R_SH_GOTOFF_HI16 }, |
| 353 |
{ BFD_RELOC_SH_GOTPC_LOW16, R_SH_GOTPC_LOW16 }, |
| 354 |
{ BFD_RELOC_SH_GOTPC_MEDLOW16, R_SH_GOTPC_MEDLOW16 }, |
| 355 |
{ BFD_RELOC_SH_GOTPC_MEDHI16, R_SH_GOTPC_MEDHI16 }, |
| 356 |
{ BFD_RELOC_SH_GOTPC_HI16, R_SH_GOTPC_HI16 }, |
| 357 |
{ BFD_RELOC_SH_COPY64, R_SH_COPY64 }, |
| 358 |
{ BFD_RELOC_SH_GLOB_DAT64, R_SH_GLOB_DAT64 }, |
| 359 |
{ BFD_RELOC_SH_JMP_SLOT64, R_SH_JMP_SLOT64 }, |
| 360 |
{ BFD_RELOC_SH_RELATIVE64, R_SH_RELATIVE64 }, |
| 361 |
{ BFD_RELOC_SH_GOT10BY4, R_SH_GOT10BY4 }, |
| 362 |
{ BFD_RELOC_SH_GOT10BY8, R_SH_GOT10BY8 }, |
| 363 |
{ BFD_RELOC_SH_GOTPLT10BY4, R_SH_GOTPLT10BY4 }, |
| 364 |
{ BFD_RELOC_SH_GOTPLT10BY8, R_SH_GOTPLT10BY8 }, |
| 365 |
{ BFD_RELOC_SH_PT_16, R_SH_PT_16 }, |
| 366 |
{ BFD_RELOC_SH_SHMEDIA_CODE, R_SH_SHMEDIA_CODE }, |
| 367 |
{ BFD_RELOC_SH_IMMU5, R_SH_DIR5U }, |
| 368 |
{ BFD_RELOC_SH_IMMS6, R_SH_DIR6S }, |
| 369 |
{ BFD_RELOC_SH_IMMU6, R_SH_DIR6U }, |
| 370 |
{ BFD_RELOC_SH_IMMS10, R_SH_DIR10S }, |
| 371 |
{ BFD_RELOC_SH_IMMS10BY2, R_SH_DIR10SW }, |
| 372 |
{ BFD_RELOC_SH_IMMS10BY4, R_SH_DIR10SL }, |
| 373 |
{ BFD_RELOC_SH_IMMS10BY8, R_SH_DIR10SQ }, |
| 374 |
{ BFD_RELOC_SH_IMMS16, R_SH_IMMS16 }, |
| 375 |
{ BFD_RELOC_SH_IMMU16, R_SH_IMMU16 }, |
| 376 |
{ BFD_RELOC_SH_IMM_LOW16, R_SH_IMM_LOW16 }, |
| 377 |
{ BFD_RELOC_SH_IMM_LOW16_PCREL, R_SH_IMM_LOW16_PCREL }, |
| 378 |
{ BFD_RELOC_SH_IMM_MEDLOW16, R_SH_IMM_MEDLOW16 }, |
| 379 |
{ BFD_RELOC_SH_IMM_MEDLOW16_PCREL, R_SH_IMM_MEDLOW16_PCREL }, |
| 380 |
{ BFD_RELOC_SH_IMM_MEDHI16, R_SH_IMM_MEDHI16 }, |
| 381 |
{ BFD_RELOC_SH_IMM_MEDHI16_PCREL, R_SH_IMM_MEDHI16_PCREL }, |
| 382 |
{ BFD_RELOC_SH_IMM_HI16, R_SH_IMM_HI16 }, |
| 383 |
{ BFD_RELOC_SH_IMM_HI16_PCREL, R_SH_IMM_HI16_PCREL }, |
| 384 |
{ BFD_RELOC_64, R_SH_64 }, |
| 385 |
{ BFD_RELOC_64_PCREL, R_SH_64_PCREL }, |
| 386 |
#endif /* not INCLUDE_SHMEDIA */ |
| 387 |
}; |
| 388 |
|
| 389 |
/* Given a BFD reloc code, return the howto structure for the |
| 390 |
corresponding SH ELF reloc. */ |
| 391 |
|
| 392 |
static reloc_howto_type * |
| 393 |
sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
| 394 |
{ |
| 395 |
unsigned int i; |
| 396 |
|
| 397 |
for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++) |
| 398 |
{ |
| 399 |
if (sh_reloc_map[i].bfd_reloc_val == code) |
| 400 |
return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val; |
| 401 |
} |
| 402 |
|
| 403 |
return NULL; |
| 404 |
} |
| 405 |
|
| 406 |
static reloc_howto_type * |
| 407 |
sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
| 408 |
{ |
| 409 |
unsigned int i; |
| 410 |
|
| 411 |
if (vxworks_object_p (abfd)) |
| 412 |
{ |
| 413 |
for (i = 0; |
| 414 |
i < (sizeof (sh_vxworks_howto_table) |
| 415 |
/ sizeof (sh_vxworks_howto_table[0])); |
| 416 |
i++) |
| 417 |
if (sh_vxworks_howto_table[i].name != NULL |
| 418 |
&& strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0) |
| 419 |
return &sh_vxworks_howto_table[i]; |
| 420 |
} |
| 421 |
else |
| 422 |
{ |
| 423 |
for (i = 0; |
| 424 |
i < (sizeof (sh_elf_howto_table) |
| 425 |
/ sizeof (sh_elf_howto_table[0])); |
| 426 |
i++) |
| 427 |
if (sh_elf_howto_table[i].name != NULL |
| 428 |
&& strcasecmp (sh_elf_howto_table[i].name, r_name) == 0) |
| 429 |
return &sh_elf_howto_table[i]; |
| 430 |
} |
| 431 |
|
| 432 |
return NULL; |
| 433 |
} |
| 434 |
|
| 435 |
/* Given an ELF reloc, fill in the howto field of a relent. */ |
| 436 |
|
| 437 |
static void |
| 438 |
sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) |
| 439 |
{ |
| 440 |
unsigned int r; |
| 441 |
|
| 442 |
r = ELF32_R_TYPE (dst->r_info); |
| 443 |
|
| 444 |
BFD_ASSERT (r < (unsigned int) R_SH_max); |
| 445 |
BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC); |
| 446 |
BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2); |
| 447 |
BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_3 || r > R_SH_LAST_INVALID_RELOC_3); |
| 448 |
BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_4 || r > R_SH_LAST_INVALID_RELOC_4); |
| 449 |
BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_5 || r > R_SH_LAST_INVALID_RELOC_5); |
| 450 |
|
| 451 |
cache_ptr->howto = get_howto_table (abfd) + r; |
| 452 |
} |
| 453 |
|
| 454 |
/* This function handles relaxing for SH ELF. See the corresponding |
| 455 |
function in coff-sh.c for a description of what this does. FIXME: |
| 456 |
There is a lot of duplication here between this code and the COFF |
| 457 |
specific code. The format of relocs and symbols is wound deeply |
| 458 |
into this code, but it would still be better if the duplication |
| 459 |
could be eliminated somehow. Note in particular that although both |
| 460 |
functions use symbols like R_SH_CODE, those symbols have different |
| 461 |
values; in coff-sh.c they come from include/coff/sh.h, whereas here |
| 462 |
they come from enum elf_sh_reloc_type in include/elf/sh.h. */ |
| 463 |
|
| 464 |
static bfd_boolean |
| 465 |
sh_elf_relax_section (bfd *abfd, asection *sec, |
| 466 |
struct bfd_link_info *link_info, bfd_boolean *again) |
| 467 |
{ |
| 468 |
Elf_Internal_Shdr *symtab_hdr; |
| 469 |
Elf_Internal_Rela *internal_relocs; |
| 470 |
bfd_boolean have_code; |
| 471 |
Elf_Internal_Rela *irel, *irelend; |
| 472 |
bfd_byte *contents = NULL; |
| 473 |
Elf_Internal_Sym *isymbuf = NULL; |
| 474 |
|
| 475 |
*again = FALSE; |
| 476 |
|
| 477 |
if (link_info->relocatable |
| 478 |
|| (sec->flags & SEC_RELOC) == 0 |
| 479 |
|| sec->reloc_count == 0) |
| 480 |
return TRUE; |
| 481 |
|
| 482 |
#ifdef INCLUDE_SHMEDIA |
| 483 |
if (elf_section_data (sec)->this_hdr.sh_flags |
| 484 |
& (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED)) |
| 485 |
{ |
| 486 |
return TRUE; |
| 487 |
} |
| 488 |
#endif |
| 489 |
|
| 490 |
symtab_hdr = &elf_symtab_hdr (abfd); |
| 491 |
|
| 492 |
internal_relocs = (_bfd_elf_link_read_relocs |
| 493 |
(abfd, sec, NULL, (Elf_Internal_Rela *) NULL, |
| 494 |
link_info->keep_memory)); |
| 495 |
if (internal_relocs == NULL) |
| 496 |
goto error_return; |
| 497 |
|
| 498 |
have_code = FALSE; |
| 499 |
|
| 500 |
irelend = internal_relocs + sec->reloc_count; |
| 501 |
for (irel = internal_relocs; irel < irelend; irel++) |
| 502 |
{ |
| 503 |
bfd_vma laddr, paddr, symval; |
| 504 |
unsigned short insn; |
| 505 |
Elf_Internal_Rela *irelfn, *irelscan, *irelcount; |
| 506 |
bfd_signed_vma foff; |
| 507 |
|
| 508 |
if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE) |
| 509 |
have_code = TRUE; |
| 510 |
|
| 511 |
if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES) |
| 512 |
continue; |
| 513 |
|
| 514 |
/* Get the section contents. */ |
| 515 |
if (contents == NULL) |
| 516 |
{ |
| 517 |
if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 518 |
contents = elf_section_data (sec)->this_hdr.contents; |
| 519 |
else |
| 520 |
{ |
| 521 |
if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 522 |
goto error_return; |
| 523 |
} |
| 524 |
} |
| 525 |
|
| 526 |
/* The r_addend field of the R_SH_USES reloc will point us to |
| 527 |
the register load. The 4 is because the r_addend field is |
| 528 |
computed as though it were a jump offset, which are based |
| 529 |
from 4 bytes after the jump instruction. */ |
| 530 |
laddr = irel->r_offset + 4 + irel->r_addend; |
| 531 |
if (laddr >= sec->size) |
| 532 |
{ |
| 533 |
(*_bfd_error_handler) (_("%B: 0x%lx: warning: bad R_SH_USES offset"), |
| 534 |
abfd, |
| 535 |
(unsigned long) irel->r_offset); |
| 536 |
continue; |
| 537 |
} |
| 538 |
insn = bfd_get_16 (abfd, contents + laddr); |
| 539 |
|
| 540 |
/* If the instruction is not mov.l NN,rN, we don't know what to |
| 541 |
do. */ |
| 542 |
if ((insn & 0xf000) != 0xd000) |
| 543 |
{ |
| 544 |
((*_bfd_error_handler) |
| 545 |
(_("%B: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x"), |
| 546 |
abfd, (unsigned long) irel->r_offset, insn)); |
| 547 |
continue; |
| 548 |
} |
| 549 |
|
| 550 |
/* Get the address from which the register is being loaded. The |
| 551 |
displacement in the mov.l instruction is quadrupled. It is a |
| 552 |
displacement from four bytes after the movl instruction, but, |
| 553 |
before adding in the PC address, two least significant bits |
| 554 |
of the PC are cleared. We assume that the section is aligned |
| 555 |
on a four byte boundary. */ |
| 556 |
paddr = insn & 0xff; |
| 557 |
paddr *= 4; |
| 558 |
paddr += (laddr + 4) &~ (bfd_vma) 3; |
| 559 |
if (paddr >= sec->size) |
| 560 |
{ |
| 561 |
((*_bfd_error_handler) |
| 562 |
(_("%B: 0x%lx: warning: bad R_SH_USES load offset"), |
| 563 |
abfd, (unsigned long) irel->r_offset)); |
| 564 |
continue; |
| 565 |
} |
| 566 |
|
| 567 |
/* Get the reloc for the address from which the register is |
| 568 |
being loaded. This reloc will tell us which function is |
| 569 |
actually being called. */ |
| 570 |
for (irelfn = internal_relocs; irelfn < irelend; irelfn++) |
| 571 |
if (irelfn->r_offset == paddr |
| 572 |
&& ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32) |
| 573 |
break; |
| 574 |
if (irelfn >= irelend) |
| 575 |
{ |
| 576 |
((*_bfd_error_handler) |
| 577 |
(_("%B: 0x%lx: warning: could not find expected reloc"), |
| 578 |
abfd, (unsigned long) paddr)); |
| 579 |
continue; |
| 580 |
} |
| 581 |
|
| 582 |
/* Read this BFD's symbols if we haven't done so already. */ |
| 583 |
if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
| 584 |
{ |
| 585 |
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 586 |
if (isymbuf == NULL) |
| 587 |
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 588 |
symtab_hdr->sh_info, 0, |
| 589 |
NULL, NULL, NULL); |
| 590 |
if (isymbuf == NULL) |
| 591 |
goto error_return; |
| 592 |
} |
| 593 |
|
| 594 |
/* Get the value of the symbol referred to by the reloc. */ |
| 595 |
if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) |
| 596 |
{ |
| 597 |
/* A local symbol. */ |
| 598 |
Elf_Internal_Sym *isym; |
| 599 |
|
| 600 |
isym = isymbuf + ELF32_R_SYM (irelfn->r_info); |
| 601 |
if (isym->st_shndx |
| 602 |
!= (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec)) |
| 603 |
{ |
| 604 |
((*_bfd_error_handler) |
| 605 |
(_("%B: 0x%lx: warning: symbol in unexpected section"), |
| 606 |
abfd, (unsigned long) paddr)); |
| 607 |
continue; |
| 608 |
} |
| 609 |
|
| 610 |
symval = (isym->st_value |
| 611 |
+ sec->output_section->vma |
| 612 |
+ sec->output_offset); |
| 613 |
} |
| 614 |
else |
| 615 |
{ |
| 616 |
unsigned long indx; |
| 617 |
struct elf_link_hash_entry *h; |
| 618 |
|
| 619 |
indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info; |
| 620 |
h = elf_sym_hashes (abfd)[indx]; |
| 621 |
BFD_ASSERT (h != NULL); |
| 622 |
if (h->root.type != bfd_link_hash_defined |
| 623 |
&& h->root.type != bfd_link_hash_defweak) |
| 624 |
{ |
| 625 |
/* This appears to be a reference to an undefined |
| 626 |
symbol. Just ignore it--it will be caught by the |
| 627 |
regular reloc processing. */ |
| 628 |
continue; |
| 629 |
} |
| 630 |
|
| 631 |
symval = (h->root.u.def.value |
| 632 |
+ h->root.u.def.section->output_section->vma |
| 633 |
+ h->root.u.def.section->output_offset); |
| 634 |
} |
| 635 |
|
| 636 |
if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace) |
| 637 |
symval += bfd_get_32 (abfd, contents + paddr); |
| 638 |
else |
| 639 |
symval += irelfn->r_addend; |
| 640 |
|
| 641 |
/* See if this function call can be shortened. */ |
| 642 |
foff = (symval |
| 643 |
- (irel->r_offset |
| 644 |
+ sec->output_section->vma |
| 645 |
+ sec->output_offset |
| 646 |
+ 4)); |
| 647 |
/* A branch to an address beyond ours might be increased by an |
| 648 |
.align that doesn't move when bytes behind us are deleted. |
| 649 |
So, we add some slop in this calculation to allow for |
| 650 |
that. */ |
| 651 |
if (foff < -0x1000 || foff >= 0x1000 - 8) |
| 652 |
{ |
| 653 |
/* After all that work, we can't shorten this function call. */ |
| 654 |
continue; |
| 655 |
} |
| 656 |
|
| 657 |
/* Shorten the function call. */ |
| 658 |
|
| 659 |
/* For simplicity of coding, we are going to modify the section |
| 660 |
contents, the section relocs, and the BFD symbol table. We |
| 661 |
must tell the rest of the code not to free up this |
| 662 |
information. It would be possible to instead create a table |
| 663 |
of changes which have to be made, as is done in coff-mips.c; |
| 664 |
that would be more work, but would require less memory when |
| 665 |
the linker is run. */ |
| 666 |
|
| 667 |
elf_section_data (sec)->relocs = internal_relocs; |
| 668 |
elf_section_data (sec)->this_hdr.contents = contents; |
| 669 |
symtab_hdr->contents = (unsigned char *) isymbuf; |
| 670 |
|
| 671 |
/* Replace the jsr with a bsr. */ |
| 672 |
|
| 673 |
/* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and |
| 674 |
replace the jsr with a bsr. */ |
| 675 |
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W); |
| 676 |
/* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) |
| 677 |
here, but that only checks if the symbol is an external symbol, |
| 678 |
not if the symbol is in a different section. Besides, we need |
| 679 |
a consistent meaning for the relocation, so we just assume here that |
| 680 |
the value of the symbol is not available. */ |
| 681 |
|
| 682 |
/* We can't fully resolve this yet, because the external |
| 683 |
symbol value may be changed by future relaxing. We let |
| 684 |
the final link phase handle it. */ |
| 685 |
bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset); |
| 686 |
|
| 687 |
irel->r_addend = -4; |
| 688 |
|
| 689 |
/* When we calculated the symbol "value" we had an offset in the |
| 690 |
DIR32's word in memory (we read and add it above). However, |
| 691 |
the jsr we create does NOT have this offset encoded, so we |
| 692 |
have to add it to the addend to preserve it. */ |
| 693 |
irel->r_addend += bfd_get_32 (abfd, contents + paddr); |
| 694 |
|
| 695 |
/* See if there is another R_SH_USES reloc referring to the same |
| 696 |
register load. */ |
| 697 |
for (irelscan = internal_relocs; irelscan < irelend; irelscan++) |
| 698 |
if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES |
| 699 |
&& laddr == irelscan->r_offset + 4 + irelscan->r_addend) |
| 700 |
break; |
| 701 |
if (irelscan < irelend) |
| 702 |
{ |
| 703 |
/* Some other function call depends upon this register load, |
| 704 |
and we have not yet converted that function call. |
| 705 |
Indeed, we may never be able to convert it. There is |
| 706 |
nothing else we can do at this point. */ |
| 707 |
continue; |
| 708 |
} |
| 709 |
|
| 710 |
/* Look for a R_SH_COUNT reloc on the location where the |
| 711 |
function address is stored. Do this before deleting any |
| 712 |
bytes, to avoid confusion about the address. */ |
| 713 |
for (irelcount = internal_relocs; irelcount < irelend; irelcount++) |
| 714 |
if (irelcount->r_offset == paddr |
| 715 |
&& ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT) |
| 716 |
break; |
| 717 |
|
| 718 |
/* Delete the register load. */ |
| 719 |
if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2)) |
| 720 |
goto error_return; |
| 721 |
|
| 722 |
/* That will change things, so, just in case it permits some |
| 723 |
other function call to come within range, we should relax |
| 724 |
again. Note that this is not required, and it may be slow. */ |
| 725 |
*again = TRUE; |
| 726 |
|
| 727 |
/* Now check whether we got a COUNT reloc. */ |
| 728 |
if (irelcount >= irelend) |
| 729 |
{ |
| 730 |
((*_bfd_error_handler) |
| 731 |
(_("%B: 0x%lx: warning: could not find expected COUNT reloc"), |
| 732 |
abfd, (unsigned long) paddr)); |
| 733 |
continue; |
| 734 |
} |
| 735 |
|
| 736 |
/* The number of uses is stored in the r_addend field. We've |
| 737 |
just deleted one. */ |
| 738 |
if (irelcount->r_addend == 0) |
| 739 |
{ |
| 740 |
((*_bfd_error_handler) (_("%B: 0x%lx: warning: bad count"), |
| 741 |
abfd, |
| 742 |
(unsigned long) paddr)); |
| 743 |
continue; |
| 744 |
} |
| 745 |
|
| 746 |
--irelcount->r_addend; |
| 747 |
|
| 748 |
/* If there are no more uses, we can delete the address. Reload |
| 749 |
the address from irelfn, in case it was changed by the |
| 750 |
previous call to sh_elf_relax_delete_bytes. */ |
| 751 |
if (irelcount->r_addend == 0) |
| 752 |
{ |
| 753 |
if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4)) |
| 754 |
goto error_return; |
| 755 |
} |
| 756 |
|
| 757 |
/* We've done all we can with that function call. */ |
| 758 |
} |
| 759 |
|
| 760 |
/* Look for load and store instructions that we can align on four |
| 761 |
byte boundaries. */ |
| 762 |
if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4 |
| 763 |
&& have_code) |
| 764 |
{ |
| 765 |
bfd_boolean swapped; |
| 766 |
|
| 767 |
/* Get the section contents. */ |
| 768 |
if (contents == NULL) |
| 769 |
{ |
| 770 |
if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 771 |
contents = elf_section_data (sec)->this_hdr.contents; |
| 772 |
else |
| 773 |
{ |
| 774 |
if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
| 775 |
goto error_return; |
| 776 |
} |
| 777 |
} |
| 778 |
|
| 779 |
if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents, |
| 780 |
&swapped)) |
| 781 |
goto error_return; |
| 782 |
|
| 783 |
if (swapped) |
| 784 |
{ |
| 785 |
elf_section_data (sec)->relocs = internal_relocs; |
| 786 |
elf_section_data (sec)->this_hdr.contents = contents; |
| 787 |
symtab_hdr->contents = (unsigned char *) isymbuf; |
| 788 |
} |
| 789 |
} |
| 790 |
|
| 791 |
if (isymbuf != NULL |
| 792 |
&& symtab_hdr->contents != (unsigned char *) isymbuf) |
| 793 |
{ |
| 794 |
if (! link_info->keep_memory) |
| 795 |
free (isymbuf); |
| 796 |
else |
| 797 |
{ |
| 798 |
/* Cache the symbols for elf_link_input_bfd. */ |
| 799 |
symtab_hdr->contents = (unsigned char *) isymbuf; |
| 800 |
} |
| 801 |
} |
| 802 |
|
| 803 |
if (contents != NULL |
| 804 |
&& elf_section_data (sec)->this_hdr.contents != contents) |
| 805 |
{ |
| 806 |
if (! link_info->keep_memory) |
| 807 |
free (contents); |
| 808 |
else |
| 809 |
{ |
| 810 |
/* Cache the section contents for elf_link_input_bfd. */ |
| 811 |
elf_section_data (sec)->this_hdr.contents = contents; |
| 812 |
} |
| 813 |
} |
| 814 |
|
| 815 |
if (internal_relocs != NULL |
| 816 |
&& elf_section_data (sec)->relocs != internal_relocs) |
| 817 |
free (internal_relocs); |
| 818 |
|
| 819 |
return TRUE; |
| 820 |
|
| 821 |
error_return: |
| 822 |
if (isymbuf != NULL |
| 823 |
&& symtab_hdr->contents != (unsigned char *) isymbuf) |
| 824 |
free (isymbuf); |
| 825 |
if (contents != NULL |
| 826 |
&& elf_section_data (sec)->this_hdr.contents != contents) |
| 827 |
free (contents); |
| 828 |
if (internal_relocs != NULL |
| 829 |
&& elf_section_data (sec)->relocs != internal_relocs) |
| 830 |
free (internal_relocs); |
| 831 |
|
| 832 |
return FALSE; |
| 833 |
} |
| 834 |
|
| 835 |
/* Delete some bytes from a section while relaxing. FIXME: There is a |
| 836 |
lot of duplication between this function and sh_relax_delete_bytes |
| 837 |
in coff-sh.c. */ |
| 838 |
|
| 839 |
static bfd_boolean |
| 840 |
sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, |
| 841 |
int count) |
| 842 |
{ |
| 843 |
Elf_Internal_Shdr *symtab_hdr; |
| 844 |
unsigned int sec_shndx; |
| 845 |
bfd_byte *contents; |
| 846 |
Elf_Internal_Rela *irel, *irelend; |
| 847 |
Elf_Internal_Rela *irelalign; |
| 848 |
bfd_vma toaddr; |
| 849 |
Elf_Internal_Sym *isymbuf, *isym, *isymend; |
| 850 |
struct elf_link_hash_entry **sym_hashes; |
| 851 |
struct elf_link_hash_entry **end_hashes; |
| 852 |
unsigned int symcount; |
| 853 |
asection *o; |
| 854 |
|
| 855 |
symtab_hdr = &elf_symtab_hdr (abfd); |
| 856 |
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 857 |
|
| 858 |
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
| 859 |
|
| 860 |
contents = elf_section_data (sec)->this_hdr.contents; |
| 861 |
|
| 862 |
/* The deletion must stop at the next ALIGN reloc for an aligment |
| 863 |
power larger than the number of bytes we are deleting. */ |
| 864 |
|
| 865 |
irelalign = NULL; |
| 866 |
toaddr = sec->size; |
| 867 |
|
| 868 |
irel = elf_section_data (sec)->relocs; |
| 869 |
irelend = irel + sec->reloc_count; |
| 870 |
for (; irel < irelend; irel++) |
| 871 |
{ |
| 872 |
if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN |
| 873 |
&& irel->r_offset > addr |
| 874 |
&& count < (1 << irel->r_addend)) |
| 875 |
{ |
| 876 |
irelalign = irel; |
| 877 |
toaddr = irel->r_offset; |
| 878 |
break; |
| 879 |
} |
| 880 |
} |
| 881 |
|
| 882 |
/* Actually delete the bytes. */ |
| 883 |
memmove (contents + addr, contents + addr + count, |
| 884 |
(size_t) (toaddr - addr - count)); |
| 885 |
if (irelalign == NULL) |
| 886 |
sec->size -= count; |
| 887 |
else |
| 888 |
{ |
| 889 |
int i; |
| 890 |
|
| 891 |
#define NOP_OPCODE (0x0009) |
| 892 |
|
| 893 |
BFD_ASSERT ((count & 1) == 0); |
| 894 |
for (i = 0; i < count; i += 2) |
| 895 |
bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); |
| 896 |
} |
| 897 |
|
| 898 |
/* Adjust all the relocs. */ |
| 899 |
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
| 900 |
{ |
| 901 |
bfd_vma nraddr, stop; |
| 902 |
bfd_vma start = 0; |
| 903 |
int insn = 0; |
| 904 |
int off, adjust, oinsn; |
| 905 |
bfd_signed_vma voff = 0; |
| 906 |
bfd_boolean overflow; |
| 907 |
|
| 908 |
/* Get the new reloc address. */ |
| 909 |
nraddr = irel->r_offset; |
| 910 |
if ((irel->r_offset > addr |
| 911 |
&& irel->r_offset < toaddr) |
| 912 |
|| (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN |
| 913 |
&& irel->r_offset == toaddr)) |
| 914 |
nraddr -= count; |
| 915 |
|
| 916 |
/* See if this reloc was for the bytes we have deleted, in which |
| 917 |
case we no longer care about it. Don't delete relocs which |
| 918 |
represent addresses, though. */ |
| 919 |
if (irel->r_offset >= addr |
| 920 |
&& irel->r_offset < addr + count |
| 921 |
&& ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN |
| 922 |
&& ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE |
| 923 |
&& ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA |
| 924 |
&& ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL) |
| 925 |
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| 926 |
(int) R_SH_NONE); |
| 927 |
|
| 928 |
/* If this is a PC relative reloc, see if the range it covers |
| 929 |
includes the bytes we have deleted. */ |
| 930 |
switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
| 931 |
{ |
| 932 |
default: |
| 933 |
break; |
| 934 |
|
| 935 |
case R_SH_DIR8WPN: |
| 936 |
case R_SH_IND12W: |
| 937 |
case R_SH_DIR8WPZ: |
| 938 |
case R_SH_DIR8WPL: |
| 939 |
start = irel->r_offset; |
| 940 |
insn = bfd_get_16 (abfd, contents + nraddr); |
| 941 |
break; |
| 942 |
} |
| 943 |
|
| 944 |
switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
| 945 |
{ |
| 946 |
default: |
| 947 |
start = stop = addr; |
| 948 |
break; |
| 949 |
|
| 950 |
case R_SH_DIR32: |
| 951 |
/* If this reloc is against a symbol defined in this |
| 952 |
section, and the symbol will not be adjusted below, we |
| 953 |
must check the addend to see it will put the value in |
| 954 |
range to be adjusted, and hence must be changed. */ |
| 955 |
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 956 |
{ |
| 957 |
isym = isymbuf + ELF32_R_SYM (irel->r_info); |
| 958 |
if (isym->st_shndx == sec_shndx |
| 959 |
&& (isym->st_value <= addr |
| 960 |
|| isym->st_value >= toaddr)) |
| 961 |
{ |
| 962 |
bfd_vma val; |
| 963 |
|
| 964 |
if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace) |
| 965 |
{ |
| 966 |
val = bfd_get_32 (abfd, contents + nraddr); |
| 967 |
val += isym->st_value; |
| 968 |
if (val > addr && val < toaddr) |
| 969 |
bfd_put_32 (abfd, val - count, contents + nraddr); |
| 970 |
} |
| 971 |
else |
| 972 |
{ |
| 973 |
val = isym->st_value + irel->r_addend; |
| 974 |
if (val > addr && val < toaddr) |
| 975 |
irel->r_addend -= count; |
| 976 |
} |
| 977 |
} |
| 978 |
} |
| 979 |
start = stop = addr; |
| 980 |
break; |
| 981 |
|
| 982 |
case R_SH_DIR8WPN: |
| 983 |
off = insn & 0xff; |
| 984 |
if (off & 0x80) |
| 985 |
off -= 0x100; |
| 986 |
stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); |
| 987 |
break; |
| 988 |
|
| 989 |
case R_SH_IND12W: |
| 990 |
off = insn & 0xfff; |
| 991 |
if (! off) |
| 992 |
{ |
| 993 |
/* This has been made by previous relaxation. Since the |
| 994 |
relocation will be against an external symbol, the |
| 995 |
final relocation will just do the right thing. */ |
| 996 |
start = stop = addr; |
| 997 |
} |
| 998 |
else |
| 999 |
{ |
| 1000 |
if (off & 0x800) |
| 1001 |
off -= 0x1000; |
| 1002 |
stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); |
| 1003 |
|
| 1004 |
/* The addend will be against the section symbol, thus |
| 1005 |
for adjusting the addend, the relevant start is the |
| 1006 |
start of the section. |
| 1007 |
N.B. If we want to abandon in-place changes here and |
| 1008 |
test directly using symbol + addend, we have to take into |
| 1009 |
account that the addend has already been adjusted by -4. */ |
| 1010 |
if (stop > addr && stop < toaddr) |
| 1011 |
irel->r_addend -= count; |
| 1012 |
} |
| 1013 |
break; |
| 1014 |
|
| 1015 |
case R_SH_DIR8WPZ: |
| 1016 |
off = insn & 0xff; |
| 1017 |
stop = start + 4 + off * 2; |
| 1018 |
break; |
| 1019 |
|
| 1020 |
case R_SH_DIR8WPL: |
| 1021 |
off = insn & 0xff; |
| 1022 |
stop = (start & ~(bfd_vma) 3) + 4 + off * 4; |
| 1023 |
break; |
| 1024 |
|
| 1025 |
case R_SH_SWITCH8: |
| 1026 |
case R_SH_SWITCH16: |
| 1027 |
case R_SH_SWITCH32: |
| 1028 |
/* These relocs types represent |
| 1029 |
.word L2-L1 |
| 1030 |
The r_addend field holds the difference between the reloc |
| 1031 |
address and L1. That is the start of the reloc, and |
| 1032 |
adding in the contents gives us the top. We must adjust |
| 1033 |
both the r_offset field and the section contents. |
| 1034 |
N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset, |
| 1035 |
and the elf bfd r_offset is called r_vaddr. */ |
| 1036 |
|
| 1037 |
stop = irel->r_offset; |
| 1038 |
start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend); |
| 1039 |
|
| 1040 |
if (start > addr |
| 1041 |
&& start < toaddr |
| 1042 |
&& (stop <= addr || stop >= toaddr)) |
| 1043 |
irel->r_addend += count; |
| 1044 |
else if (stop > addr |
| 1045 |
&& stop < toaddr |
| 1046 |
&& (start <= addr || start >= toaddr)) |
| 1047 |
irel->r_addend -= count; |
| 1048 |
|
| 1049 |
if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16) |
| 1050 |
voff = bfd_get_signed_16 (abfd, contents + nraddr); |
| 1051 |
else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8) |
| 1052 |
voff = bfd_get_8 (abfd, contents + nraddr); |
| 1053 |
else |
| 1054 |
voff = bfd_get_signed_32 (abfd, contents + nraddr); |
| 1055 |
stop = (bfd_vma) ((bfd_signed_vma) start + voff); |
| 1056 |
|
| 1057 |
break; |
| 1058 |
|
| 1059 |
case R_SH_USES: |
| 1060 |
start = irel->r_offset; |
| 1061 |
stop = (bfd_vma) ((bfd_signed_vma) start |
| 1062 |
+ (long) irel->r_addend |
| 1063 |
+ 4); |
| 1064 |
break; |
| 1065 |
} |
| 1066 |
|
| 1067 |
if (start > addr |
| 1068 |
&& start < toaddr |
| 1069 |
&& (stop <= addr || stop >= toaddr)) |
| 1070 |
adjust = count; |
| 1071 |
else if (stop > addr |
| 1072 |
&& stop < toaddr |
| 1073 |
&& (start <= addr || start >= toaddr)) |
| 1074 |
adjust = - count; |
| 1075 |
else |
| 1076 |
adjust = 0; |
| 1077 |
|
| 1078 |
if (adjust != 0) |
| 1079 |
{ |
| 1080 |
oinsn = insn; |
| 1081 |
overflow = FALSE; |
| 1082 |
switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
| 1083 |
{ |
| 1084 |
default: |
| 1085 |
abort (); |
| 1086 |
break; |
| 1087 |
|
| 1088 |
case R_SH_DIR8WPN: |
| 1089 |
case R_SH_DIR8WPZ: |
| 1090 |
insn += adjust / 2; |
| 1091 |
if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 1092 |
overflow = TRUE; |
| 1093 |
bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
| 1094 |
break; |
| 1095 |
|
| 1096 |
case R_SH_IND12W: |
| 1097 |
insn += adjust / 2; |
| 1098 |
if ((oinsn & 0xf000) != (insn & 0xf000)) |
| 1099 |
overflow = TRUE; |
| 1100 |
bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
| 1101 |
break; |
| 1102 |
|
| 1103 |
case R_SH_DIR8WPL: |
| 1104 |
BFD_ASSERT (adjust == count || count >= 4); |
| 1105 |
if (count >= 4) |
| 1106 |
insn += adjust / 4; |
| 1107 |
else |
| 1108 |
{ |
| 1109 |
if ((irel->r_offset & 3) == 0) |
| 1110 |
++insn; |
| 1111 |
} |
| 1112 |
if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 1113 |
overflow = TRUE; |
| 1114 |
bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
| 1115 |
break; |
| 1116 |
|
| 1117 |
case R_SH_SWITCH8: |
| 1118 |
voff += adjust; |
| 1119 |
if (voff < 0 || voff >= 0xff) |
| 1120 |
overflow = TRUE; |
| 1121 |
bfd_put_8 (abfd, voff, contents + nraddr); |
| 1122 |
break; |
| 1123 |
|
| 1124 |
case R_SH_SWITCH16: |
| 1125 |
voff += adjust; |
| 1126 |
if (voff < - 0x8000 || voff >= 0x8000) |
| 1127 |
overflow = TRUE; |
| 1128 |
bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr); |
| 1129 |
break; |
| 1130 |
|
| 1131 |
case R_SH_SWITCH32: |
| 1132 |
voff += adjust; |
| 1133 |
bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr); |
| 1134 |
break; |
| 1135 |
|
| 1136 |
case R_SH_USES: |
| 1137 |
irel->r_addend += adjust; |
| 1138 |
break; |
| 1139 |
} |
| 1140 |
|
| 1141 |
if (overflow) |
| 1142 |
{ |
| 1143 |
((*_bfd_error_handler) |
| 1144 |
(_("%B: 0x%lx: fatal: reloc overflow while relaxing"), |
| 1145 |
abfd, (unsigned long) irel->r_offset)); |
| 1146 |
bfd_set_error (bfd_error_bad_value); |
| 1147 |
return FALSE; |
| 1148 |
} |
| 1149 |
} |
| 1150 |
|
| 1151 |
irel->r_offset = nraddr; |
| 1152 |
} |
| 1153 |
|
| 1154 |
/* Look through all the other sections. If there contain any IMM32 |
| 1155 |
relocs against internal symbols which we are not going to adjust |
| 1156 |
below, we may need to adjust the addends. */ |
| 1157 |
for (o = abfd->sections; o != NULL; o = o->next) |
| 1158 |
{ |
| 1159 |
Elf_Internal_Rela *internal_relocs; |
| 1160 |
Elf_Internal_Rela *irelscan, *irelscanend; |
| 1161 |
bfd_byte *ocontents; |
| 1162 |
|
| 1163 |
if (o == sec |
| 1164 |
|| (o->flags & SEC_RELOC) == 0 |
| 1165 |
|| o->reloc_count == 0) |
| 1166 |
continue; |
| 1167 |
|
| 1168 |
/* We always cache the relocs. Perhaps, if info->keep_memory is |
| 1169 |
FALSE, we should free them, if we are permitted to, when we |
| 1170 |
leave sh_coff_relax_section. */ |
| 1171 |
internal_relocs = (_bfd_elf_link_read_relocs |
| 1172 |
(abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE)); |
| 1173 |
if (internal_relocs == NULL) |
| 1174 |
return FALSE; |
| 1175 |
|
| 1176 |
ocontents = NULL; |
| 1177 |
irelscanend = internal_relocs + o->reloc_count; |
| 1178 |
for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++) |
| 1179 |
{ |
| 1180 |
/* Dwarf line numbers use R_SH_SWITCH32 relocs. */ |
| 1181 |
if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32) |
| 1182 |
{ |
| 1183 |
bfd_vma start, stop; |
| 1184 |
bfd_signed_vma voff; |
| 1185 |
|
| 1186 |
if (ocontents == NULL) |
| 1187 |
{ |
| 1188 |
if (elf_section_data (o)->this_hdr.contents != NULL) |
| 1189 |
ocontents = elf_section_data (o)->this_hdr.contents; |
| 1190 |
else |
| 1191 |
{ |
| 1192 |
/* We always cache the section contents. |
| 1193 |
Perhaps, if info->keep_memory is FALSE, we |
| 1194 |
should free them, if we are permitted to, |
| 1195 |
when we leave sh_coff_relax_section. */ |
| 1196 |
if (!bfd_malloc_and_get_section (abfd, o, &ocontents)) |
| 1197 |
{ |
| 1198 |
if (ocontents != NULL) |
| 1199 |
free (ocontents); |
| 1200 |
return FALSE; |
| 1201 |
} |
| 1202 |
|
| 1203 |
elf_section_data (o)->this_hdr.contents = ocontents; |
| 1204 |
} |
| 1205 |
} |
| 1206 |
|
| 1207 |
stop = irelscan->r_offset; |
| 1208 |
start |
| 1209 |
= (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend); |
| 1210 |
|
| 1211 |
/* STOP is in a different section, so it won't change. */ |
| 1212 |
if (start > addr && start < toaddr) |
| 1213 |
irelscan->r_addend += count; |
| 1214 |
|
| 1215 |
voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset); |
| 1216 |
stop = (bfd_vma) ((bfd_signed_vma) start + voff); |
| 1217 |
|
| 1218 |
if (start > addr |
| 1219 |
&& start < toaddr |
| 1220 |
&& (stop <= addr || stop >= toaddr)) |
| 1221 |
bfd_put_signed_32 (abfd, (bfd_vma) voff + count, |
| 1222 |
ocontents + irelscan->r_offset); |
| 1223 |
else if (stop > addr |
| 1224 |
&& stop < toaddr |
| 1225 |
&& (start <= addr || start >= toaddr)) |
| 1226 |
bfd_put_signed_32 (abfd, (bfd_vma) voff - count, |
| 1227 |
ocontents + irelscan->r_offset); |
| 1228 |
} |
| 1229 |
|
| 1230 |
if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32) |
| 1231 |
continue; |
| 1232 |
|
| 1233 |
if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info) |
| 1234 |
continue; |
| 1235 |
|
| 1236 |
|
| 1237 |
isym = isymbuf + ELF32_R_SYM (irelscan->r_info); |
| 1238 |
if (isym->st_shndx == sec_shndx |
| 1239 |
&& (isym->st_value <= addr |
| 1240 |
|| isym->st_value >= toaddr)) |
| 1241 |
{ |
| 1242 |
bfd_vma val; |
| 1243 |
|
| 1244 |
if (ocontents == NULL) |
| 1245 |
{ |
| 1246 |
if (elf_section_data (o)->this_hdr.contents != NULL) |
| 1247 |
ocontents = elf_section_data (o)->this_hdr.contents; |
| 1248 |
else |
| 1249 |
{ |
| 1250 |
/* We always cache the section contents. |
| 1251 |
Perhaps, if info->keep_memory is FALSE, we |
| 1252 |
should free them, if we are permitted to, |
| 1253 |
when we leave sh_coff_relax_section. */ |
| 1254 |
if (!bfd_malloc_and_get_section (abfd, o, &ocontents)) |
| 1255 |
{ |
| 1256 |
if (ocontents != NULL) |
| 1257 |
free (ocontents); |
| 1258 |
return FALSE; |
| 1259 |
} |
| 1260 |
|
| 1261 |
elf_section_data (o)->this_hdr.contents = ocontents; |
| 1262 |
} |
| 1263 |
} |
| 1264 |
|
| 1265 |
val = bfd_get_32 (abfd, ocontents + irelscan->r_offset); |
| 1266 |
val += isym->st_value; |
| 1267 |
if (val > addr && val < toaddr) |
| 1268 |
bfd_put_32 (abfd, val - count, |
| 1269 |
ocontents + irelscan->r_offset); |
| 1270 |
} |
| 1271 |
} |
| 1272 |
} |
| 1273 |
|
| 1274 |
/* Adjust the local symbols defined in this section. */ |
| 1275 |
isymend = isymbuf + symtab_hdr->sh_info; |
| 1276 |
for (isym = isymbuf; isym < isymend; isym++) |
| 1277 |
{ |
| 1278 |
if (isym->st_shndx == sec_shndx |
| 1279 |
&& isym->st_value > addr |
| 1280 |
&& isym->st_value < toaddr) |
| 1281 |
isym->st_value -= count; |
| 1282 |
} |
| 1283 |
|
| 1284 |
/* Now adjust the global symbols defined in this section. */ |
| 1285 |
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
| 1286 |
- symtab_hdr->sh_info); |
| 1287 |
sym_hashes = elf_sym_hashes (abfd); |
| 1288 |
end_hashes = sym_hashes + symcount; |
| 1289 |
for (; sym_hashes < end_hashes; sym_hashes++) |
| 1290 |
{ |
| 1291 |
struct elf_link_hash_entry *sym_hash = *sym_hashes; |
| 1292 |
if ((sym_hash->root.type == bfd_link_hash_defined |
| 1293 |
|| sym_hash->root.type == bfd_link_hash_defweak) |
| 1294 |
&& sym_hash->root.u.def.section == sec |
| 1295 |
&& sym_hash->root.u.def.value > addr |
| 1296 |
&& sym_hash->root.u.def.value < toaddr) |
| 1297 |
{ |
| 1298 |
sym_hash->root.u.def.value -= count; |
| 1299 |
} |
| 1300 |
} |
| 1301 |
|
| 1302 |
/* See if we can move the ALIGN reloc forward. We have adjusted |
| 1303 |
r_offset for it already. */ |
| 1304 |
if (irelalign != NULL) |
| 1305 |
{ |
| 1306 |
bfd_vma alignto, alignaddr; |
| 1307 |
|
| 1308 |
alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); |
| 1309 |
alignaddr = BFD_ALIGN (irelalign->r_offset, |
| 1310 |
1 << irelalign->r_addend); |
| 1311 |
if (alignto != alignaddr) |
| 1312 |
{ |
| 1313 |
/* Tail recursion. */ |
| 1314 |
return sh_elf_relax_delete_bytes (abfd, sec, alignaddr, |
| 1315 |
(int) (alignto - alignaddr)); |
| 1316 |
} |
| 1317 |
} |
| 1318 |
|
| 1319 |
return TRUE; |
| 1320 |
} |
| 1321 |
|
| 1322 |
/* Look for loads and stores which we can align to four byte |
| 1323 |
boundaries. This is like sh_align_loads in coff-sh.c. */ |
| 1324 |
|
| 1325 |
static bfd_boolean |
| 1326 |
sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, |
| 1327 |
Elf_Internal_Rela *internal_relocs, |
| 1328 |
bfd_byte *contents ATTRIBUTE_UNUSED, |
| 1329 |
bfd_boolean *pswapped) |
| 1330 |
{ |
| 1331 |
Elf_Internal_Rela *irel, *irelend; |
| 1332 |
bfd_vma *labels = NULL; |
| 1333 |
bfd_vma *label, *label_end; |
| 1334 |
bfd_size_type amt; |
| 1335 |
|
| 1336 |
*pswapped = FALSE; |
| 1337 |
|
| 1338 |
irelend = internal_relocs + sec->reloc_count; |
| 1339 |
|
| 1340 |
/* Get all the addresses with labels on them. */ |
| 1341 |
amt = sec->reloc_count; |
| 1342 |
amt *= sizeof (bfd_vma); |
| 1343 |
labels = (bfd_vma *) bfd_malloc (amt); |
| 1344 |
if (labels == NULL) |
| 1345 |
goto error_return; |
| 1346 |
label_end = labels; |
| 1347 |
for (irel = internal_relocs; irel < irelend; irel++) |
| 1348 |
{ |
| 1349 |
if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL) |
| 1350 |
{ |
| 1351 |
*label_end = irel->r_offset; |
| 1352 |
++label_end; |
| 1353 |
} |
| 1354 |
} |
| 1355 |
|
| 1356 |
/* Note that the assembler currently always outputs relocs in |
| 1357 |
address order. If that ever changes, this code will need to sort |
| 1358 |
the label values and the relocs. */ |
| 1359 |
|
| 1360 |
label = labels; |
| 1361 |
|
| 1362 |
for (irel = internal_relocs; irel < irelend; irel++) |
| 1363 |
{ |
| 1364 |
bfd_vma start, stop; |
| 1365 |
|
| 1366 |
if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE) |
| 1367 |
continue; |
| 1368 |
|
| 1369 |
start = irel->r_offset; |
| 1370 |
|
| 1371 |
for (irel++; irel < irelend; irel++) |
| 1372 |
if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA) |
| 1373 |
break; |
| 1374 |
if (irel < irelend) |
| 1375 |
stop = irel->r_offset; |
| 1376 |
else |
| 1377 |
stop = sec->size; |
| 1378 |
|
| 1379 |
if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns, |
| 1380 |
internal_relocs, &label, |
| 1381 |
label_end, start, stop, pswapped)) |
| 1382 |
goto error_return; |
| 1383 |
} |
| 1384 |
|
| 1385 |
free (labels); |
| 1386 |
|
| 1387 |
return TRUE; |
| 1388 |
|
| 1389 |
error_return: |
| 1390 |
if (labels != NULL) |
| 1391 |
free (labels); |
| 1392 |
return FALSE; |
| 1393 |
} |
| 1394 |
|
| 1395 |
#ifndef SH64_ELF |
| 1396 |
/* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */ |
| 1397 |
|
| 1398 |
static bfd_boolean |
| 1399 |
sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs, |
| 1400 |
bfd_byte *contents, bfd_vma addr) |
| 1401 |
{ |
| 1402 |
Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs; |
| 1403 |
unsigned short i1, i2; |
| 1404 |
Elf_Internal_Rela *irel, *irelend; |
| 1405 |
|
| 1406 |
/* Swap the instructions themselves. */ |
| 1407 |
i1 = bfd_get_16 (abfd, contents + addr); |
| 1408 |
i2 = bfd_get_16 (abfd, contents + addr + 2); |
| 1409 |
bfd_put_16 (abfd, (bfd_vma) i2, contents + addr); |
| 1410 |
bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2); |
| 1411 |
|
| 1412 |
/* Adjust all reloc addresses. */ |
| 1413 |
irelend = internal_relocs + sec->reloc_count; |
| 1414 |
for (irel = internal_relocs; irel < irelend; irel++) |
| 1415 |
{ |
| 1416 |
enum elf_sh_reloc_type type; |
| 1417 |
int add; |
| 1418 |
|
| 1419 |
/* There are a few special types of relocs that we don't want to |
| 1420 |
adjust. These relocs do not apply to the instruction itself, |
| 1421 |
but are only associated with the address. */ |
| 1422 |
type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info); |
| 1423 |
if (type == R_SH_ALIGN |
| 1424 |
|| type == R_SH_CODE |
| 1425 |
|| type == R_SH_DATA |
| 1426 |
|| type == R_SH_LABEL) |
| 1427 |
continue; |
| 1428 |
|
| 1429 |
/* If an R_SH_USES reloc points to one of the addresses being |
| 1430 |
swapped, we must adjust it. It would be incorrect to do this |
| 1431 |
for a jump, though, since we want to execute both |
| 1432 |
instructions after the jump. (We have avoided swapping |
| 1433 |
around a label, so the jump will not wind up executing an |
| 1434 |
instruction it shouldn't). */ |
| 1435 |
if (type == R_SH_USES) |
| 1436 |
{ |
| 1437 |
bfd_vma off; |
| 1438 |
|
| 1439 |
off = irel->r_offset + 4 + irel->r_addend; |
| 1440 |
if (off == addr) |
| 1441 |
irel->r_offset += 2; |
| 1442 |
else if (off == addr + 2) |
| 1443 |
irel->r_offset -= 2; |
| 1444 |
} |
| 1445 |
|
| 1446 |
if (irel->r_offset == addr) |
| 1447 |
{ |
| 1448 |
irel->r_offset += 2; |
| 1449 |
add = -2; |
| 1450 |
} |
| 1451 |
else if (irel->r_offset == addr + 2) |
| 1452 |
{ |
| 1453 |
irel->r_offset -= 2; |
| 1454 |
add = 2; |
| 1455 |
} |
| 1456 |
else |
| 1457 |
add = 0; |
| 1458 |
|
| 1459 |
if (add != 0) |
| 1460 |
{ |
| 1461 |
bfd_byte *loc; |
| 1462 |
unsigned short insn, oinsn; |
| 1463 |
bfd_boolean overflow; |
| 1464 |
|
| 1465 |
loc = contents + irel->r_offset; |
| 1466 |
overflow = FALSE; |
| 1467 |
switch (type) |
| 1468 |
{ |
| 1469 |
default: |
| 1470 |
break; |
| 1471 |
|
| 1472 |
case R_SH_DIR8WPN: |
| 1473 |
case R_SH_DIR8WPZ: |
| 1474 |
insn = bfd_get_16 (abfd, loc); |
| 1475 |
oinsn = insn; |
| 1476 |
insn += add / 2; |
| 1477 |
if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 1478 |
overflow = TRUE; |
| 1479 |
bfd_put_16 (abfd, (bfd_vma) insn, loc); |
| 1480 |
break; |
| 1481 |
|
| 1482 |
case R_SH_IND12W: |
| 1483 |
insn = bfd_get_16 (abfd, loc); |
| 1484 |
oinsn = insn; |
| 1485 |
insn += add / 2; |
| 1486 |
if ((oinsn & 0xf000) != (insn & 0xf000)) |
| 1487 |
overflow = TRUE; |
| 1488 |
bfd_put_16 (abfd, (bfd_vma) insn, loc); |
| 1489 |
break; |
| 1490 |
|
| 1491 |
case R_SH_DIR8WPL: |
| 1492 |
/* This reloc ignores the least significant 3 bits of |
| 1493 |
the program counter before adding in the offset. |
| 1494 |
This means that if ADDR is at an even address, the |
| 1495 |
swap will not affect the offset. If ADDR is an at an |
| 1496 |
odd address, then the instruction will be crossing a |
| 1497 |
four byte boundary, and must be adjusted. */ |
| 1498 |
if ((addr & 3) != 0) |
| 1499 |
{ |
| 1500 |
insn = bfd_get_16 (abfd, loc); |
| 1501 |
oinsn = insn; |
| 1502 |
insn += add / 2; |
| 1503 |
if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 1504 |
overflow = TRUE; |
| 1505 |
bfd_put_16 (abfd, (bfd_vma) insn, loc); |
| 1506 |
} |
| 1507 |
|
| 1508 |
break; |
| 1509 |
} |
| 1510 |
|
| 1511 |
if (overflow) |
| 1512 |
{ |
| 1513 |
((*_bfd_error_handler) |
| 1514 |
(_("%B: 0x%lx: fatal: reloc overflow while relaxing"), |
| 1515 |
abfd, (unsigned long) irel->r_offset)); |
| 1516 |
bfd_set_error (bfd_error_bad_value); |
| 1517 |
return FALSE; |
| 1518 |
} |
| 1519 |
} |
| 1520 |
} |
| 1521 |
|
| 1522 |
return TRUE; |
| 1523 |
} |
| 1524 |
#endif /* defined SH64_ELF */ |
| 1525 |
|
| 1526 |
/* Describes one of the various PLT styles. */ |
| 1527 |
|
| 1528 |
struct elf_sh_plt_info |
| 1529 |
{ |
| 1530 |
/* The template for the first PLT entry, or NULL if there is no special |
| 1531 |
first entry. */ |
| 1532 |
const bfd_byte *plt0_entry; |
| 1533 |
|
| 1534 |
/* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */ |
| 1535 |
bfd_vma plt0_entry_size; |
| 1536 |
|
| 1537 |
/* Index I is the offset into PLT0_ENTRY of a pointer to |
| 1538 |
_GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE |
| 1539 |
if there is no such pointer. */ |
| 1540 |
bfd_vma plt0_got_fields[3]; |
| 1541 |
|
| 1542 |
/* The template for a symbol's PLT entry. */ |
| 1543 |
const bfd_byte *symbol_entry; |
| 1544 |
|
| 1545 |
/* The size of SYMBOL_ENTRY in bytes. */ |
| 1546 |
bfd_vma symbol_entry_size; |
| 1547 |
|
| 1548 |
/* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used |
| 1549 |
on all targets. The comments by each member indicate the value |
| 1550 |
that the field must hold. */ |
| 1551 |
struct { |
| 1552 |
bfd_vma got_entry; /* the address of the symbol's .got.plt entry */ |
| 1553 |
bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */ |
| 1554 |
bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */ |
| 1555 |
} symbol_fields; |
| 1556 |
|
| 1557 |
/* The offset of the resolver stub from the start of SYMBOL_ENTRY. */ |
| 1558 |
bfd_vma symbol_resolve_offset; |
| 1559 |
}; |
| 1560 |
|
| 1561 |
#ifdef INCLUDE_SHMEDIA |
| 1562 |
|
| 1563 |
/* The size in bytes of an entry in the procedure linkage table. */ |
| 1564 |
|
| 1565 |
#define ELF_PLT_ENTRY_SIZE 64 |
| 1566 |
|
| 1567 |
/* First entry in an absolute procedure linkage table look like this. */ |
| 1568 |
|
| 1569 |
static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] = |
| 1570 |
{ |
| 1571 |
0xcc, 0x00, 0x01, 0x10, /* movi .got.plt >> 16, r17 */ |
| 1572 |
0xc8, 0x00, 0x01, 0x10, /* shori .got.plt & 65535, r17 */ |
| 1573 |
0x89, 0x10, 0x09, 0x90, /* ld.l r17, 8, r25 */ |
| 1574 |
0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */ |
| 1575 |
0x89, 0x10, 0x05, 0x10, /* ld.l r17, 4, r17 */ |
| 1576 |
0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */ |
| 1577 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1578 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1579 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1580 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1581 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1582 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1583 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1584 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1585 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1586 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1587 |
}; |
| 1588 |
|
| 1589 |
static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] = |
| 1590 |
{ |
| 1591 |
0x10, 0x01, 0x00, 0xcc, /* movi .got.plt >> 16, r17 */ |
| 1592 |
0x10, 0x01, 0x00, 0xc8, /* shori .got.plt & 65535, r17 */ |
| 1593 |
0x90, 0x09, 0x10, 0x89, /* ld.l r17, 8, r25 */ |
| 1594 |
0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */ |
| 1595 |
0x10, 0x05, 0x10, 0x89, /* ld.l r17, 4, r17 */ |
| 1596 |
0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */ |
| 1597 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1598 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1599 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1600 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1601 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1602 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1603 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1604 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1605 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1606 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1607 |
}; |
| 1608 |
|
| 1609 |
/* Sebsequent entries in an absolute procedure linkage table look like |
| 1610 |
this. */ |
| 1611 |
|
| 1612 |
static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] = |
| 1613 |
{ |
| 1614 |
0xcc, 0x00, 0x01, 0x90, /* movi nameN-in-GOT >> 16, r25 */ |
| 1615 |
0xc8, 0x00, 0x01, 0x90, /* shori nameN-in-GOT & 65535, r25 */ |
| 1616 |
0x89, 0x90, 0x01, 0x90, /* ld.l r25, 0, r25 */ |
| 1617 |
0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */ |
| 1618 |
0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */ |
| 1619 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1620 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1621 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1622 |
0xcc, 0x00, 0x01, 0x90, /* movi .PLT0 >> 16, r25 */ |
| 1623 |
0xc8, 0x00, 0x01, 0x90, /* shori .PLT0 & 65535, r25 */ |
| 1624 |
0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */ |
| 1625 |
0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */ |
| 1626 |
0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */ |
| 1627 |
0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */ |
| 1628 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1629 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1630 |
}; |
| 1631 |
|
| 1632 |
static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] = |
| 1633 |
{ |
| 1634 |
0x90, 0x01, 0x00, 0xcc, /* movi nameN-in-GOT >> 16, r25 */ |
| 1635 |
0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */ |
| 1636 |
0x90, 0x01, 0x90, 0x89, /* ld.l r25, 0, r25 */ |
| 1637 |
0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */ |
| 1638 |
0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */ |
| 1639 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1640 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1641 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1642 |
0x90, 0x01, 0x00, 0xcc, /* movi .PLT0 >> 16, r25 */ |
| 1643 |
0x90, 0x01, 0x00, 0xc8, /* shori .PLT0 & 65535, r25 */ |
| 1644 |
0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */ |
| 1645 |
0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */ |
| 1646 |
0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */ |
| 1647 |
0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */ |
| 1648 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1649 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1650 |
}; |
| 1651 |
|
| 1652 |
/* Entries in a PIC procedure linkage table look like this. */ |
| 1653 |
|
| 1654 |
static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] = |
| 1655 |
{ |
| 1656 |
0xcc, 0x00, 0x01, 0x90, /* movi nameN@GOT >> 16, r25 */ |
| 1657 |
0xc8, 0x00, 0x01, 0x90, /* shori nameN@GOT & 65535, r25 */ |
| 1658 |
0x40, 0xc2, 0x65, 0x90, /* ldx.l r12, r25, r25 */ |
| 1659 |
0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */ |
| 1660 |
0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */ |
| 1661 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1662 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1663 |
0x6f, 0xf0, 0xff, 0xf0, /* nop */ |
| 1664 |
0xce, 0x00, 0x01, 0x10, /* movi -GOT_BIAS, r17 */ |
| 1665 |
0x00, 0xc8, 0x45, 0x10, /* add.l r12, r17, r17 */ |
| 1666 |
0x89, 0x10, 0x09, 0x90, /* ld.l r17, 8, r25 */ |
| 1667 |
0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */ |
| 1668 |
0x89, 0x10, 0x05, 0x10, /* ld.l r17, 4, r17 */ |
| 1669 |
0xcc, 0x00, 0x01, 0x50, /* movi reloc-offset >> 16, r21 */ |
| 1670 |
0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */ |
| 1671 |
0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */ |
| 1672 |
}; |
| 1673 |
|
| 1674 |
static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] = |
| 1675 |
{ |
| 1676 |
0x90, 0x01, 0x00, 0xcc, /* movi nameN@GOT >> 16, r25 */ |
| 1677 |
0x90, 0x01, 0x00, 0xc8, /* shori nameN@GOT & 65535, r25 */ |
| 1678 |
0x90, 0x65, 0xc2, 0x40, /* ldx.l r12, r25, r25 */ |
| 1679 |
0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */ |
| 1680 |
0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */ |
| 1681 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1682 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1683 |
0xf0, 0xff, 0xf0, 0x6f, /* nop */ |
| 1684 |
0x10, 0x01, 0x00, 0xce, /* movi -GOT_BIAS, r17 */ |
| 1685 |
0x10, 0x45, 0xc8, 0x00, /* add.l r12, r17, r17 */ |
| 1686 |
0x90, 0x09, 0x10, 0x89, /* ld.l r17, 8, r25 */ |
| 1687 |
0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */ |
| 1688 |
0x10, 0x05, 0x10, 0x89, /* ld.l r17, 4, r17 */ |
| 1689 |
0x50, 0x01, 0x00, 0xcc, /* movi reloc-offset >> 16, r21 */ |
| 1690 |
0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */ |
| 1691 |
0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */ |
| 1692 |
}; |
| 1693 |
|
| 1694 |
static const struct elf_sh_plt_info elf_sh_plts[2][2] = { |
| 1695 |
{ |
| 1696 |
{ |
| 1697 |
/* Big-endian non-PIC. */ |
| 1698 |
elf_sh_plt0_entry_be, |
| 1699 |
ELF_PLT_ENTRY_SIZE, |
| 1700 |
{ 0, MINUS_ONE, MINUS_ONE }, |
| 1701 |
elf_sh_plt_entry_be, |
| 1702 |
ELF_PLT_ENTRY_SIZE, |
| 1703 |
{ 0, 32, 48 }, |
| 1704 |
33 /* includes ISA encoding */ |
| 1705 |
}, |
| 1706 |
{ |
| 1707 |
/* Little-endian non-PIC. */ |
| 1708 |
elf_sh_plt0_entry_le, |
| 1709 |
ELF_PLT_ENTRY_SIZE, |
| 1710 |
{ 0, MINUS_ONE, MINUS_ONE }, |
| 1711 |
elf_sh_plt_entry_le, |
| 1712 |
ELF_PLT_ENTRY_SIZE, |
| 1713 |
{ 0, 32, 48 }, |
| 1714 |
33 /* includes ISA encoding */ |
| 1715 |
}, |
| 1716 |
}, |
| 1717 |
{ |
| 1718 |
{ |
| 1719 |
/* Big-endian PIC. */ |
| 1720 |
elf_sh_plt0_entry_be, |
| 1721 |
ELF_PLT_ENTRY_SIZE, |
| 1722 |
{ MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
| 1723 |
elf_sh_pic_plt_entry_be, |
| 1724 |
ELF_PLT_ENTRY_SIZE, |
| 1725 |
{ 0, MINUS_ONE, 52 }, |
| 1726 |
33 /* includes ISA encoding */ |
| 1727 |
}, |
| 1728 |
{ |
| 1729 |
/* Little-endian PIC. */ |
| 1730 |
elf_sh_plt0_entry_le, |
| 1731 |
ELF_PLT_ENTRY_SIZE, |
| 1732 |
{ MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
| 1733 |
elf_sh_pic_plt_entry_le, |
| 1734 |
ELF_PLT_ENTRY_SIZE, |
| 1735 |
{ 0, MINUS_ONE, 52 }, |
| 1736 |
33 /* includes ISA encoding */ |
| 1737 |
}, |
| 1738 |
} |
| 1739 |
}; |
| 1740 |
|
| 1741 |
/* Return offset of the linker in PLT0 entry. */ |
| 1742 |
#define elf_sh_plt0_gotplt_offset(info) 0 |
| 1743 |
|
| 1744 |
/* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD. |
| 1745 |
VALUE is the field's value and CODE_P is true if VALUE refers to code, |
| 1746 |
not data. |
| 1747 |
|
| 1748 |
On SH64, each 32-bit field is loaded by a movi/shori pair. */ |
| 1749 |
|
| 1750 |
inline static void |
| 1751 |
install_plt_field (bfd *output_bfd, bfd_boolean code_p, |
| 1752 |
unsigned long value, bfd_byte *addr) |
| 1753 |
{ |
| 1754 |
value |= code_p; |
| 1755 |
bfd_put_32 (output_bfd, |
| 1756 |
bfd_get_32 (output_bfd, addr) |
| 1757 |
| ((value >> 6) & 0x3fffc00), |
| 1758 |
addr); |
| 1759 |
bfd_put_32 (output_bfd, |
| 1760 |
bfd_get_32 (output_bfd, addr + 4) |
| 1761 |
| ((value << 10) & 0x3fffc00), |
| 1762 |
addr + 4); |
| 1763 |
} |
| 1764 |
|
| 1765 |
/* Return the type of PLT associated with ABFD. PIC_P is true if |
| 1766 |
the object is position-independent. */ |
| 1767 |
|
| 1768 |
static const struct elf_sh_plt_info * |
| 1769 |
get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p) |
| 1770 |
{ |
| 1771 |
return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)]; |
| 1772 |
} |
| 1773 |
#else |
| 1774 |
/* The size in bytes of an entry in the procedure linkage table. */ |
| 1775 |
|
| 1776 |
#define ELF_PLT_ENTRY_SIZE 28 |
| 1777 |
|
| 1778 |
/* First entry in an absolute procedure linkage table look like this. */ |
| 1779 |
|
| 1780 |
/* Note - this code has been "optimised" not to use r2. r2 is used by |
| 1781 |
GCC to return the address of large structures, so it should not be |
| 1782 |
corrupted here. This does mean however, that this PLT does not conform |
| 1783 |
to the SH PIC ABI. That spec says that r0 contains the type of the PLT |
| 1784 |
and r2 contains the GOT id. This version stores the GOT id in r0 and |
| 1785 |
ignores the type. Loaders can easily detect this difference however, |
| 1786 |
since the type will always be 0 or 8, and the GOT ids will always be |
| 1787 |
greater than or equal to 12. */ |
| 1788 |
static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] = |
| 1789 |
{ |
| 1790 |
0xd0, 0x05, /* mov.l 2f,r0 */ |
| 1791 |
0x60, 0x02, /* mov.l @r0,r0 */ |
| 1792 |
0x2f, 0x06, /* mov.l r0,@-r15 */ |
| 1793 |
0xd0, 0x03, /* mov.l 1f,r0 */ |
| 1794 |
0x60, 0x02, /* mov.l @r0,r0 */ |
| 1795 |
0x40, 0x2b, /* jmp @r0 */ |
| 1796 |
0x60, 0xf6, /* mov.l @r15+,r0 */ |
| 1797 |
0x00, 0x09, /* nop */ |
| 1798 |
0x00, 0x09, /* nop */ |
| 1799 |
0x00, 0x09, /* nop */ |
| 1800 |
0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
| 1801 |
0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
| 1802 |
}; |
| 1803 |
|
| 1804 |
static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] = |
| 1805 |
{ |
| 1806 |
0x05, 0xd0, /* mov.l 2f,r0 */ |
| 1807 |
0x02, 0x60, /* mov.l @r0,r0 */ |
| 1808 |
0x06, 0x2f, /* mov.l r0,@-r15 */ |
| 1809 |
0x03, 0xd0, /* mov.l 1f,r0 */ |
| 1810 |
0x02, 0x60, /* mov.l @r0,r0 */ |
| 1811 |
0x2b, 0x40, /* jmp @r0 */ |
| 1812 |
0xf6, 0x60, /* mov.l @r15+,r0 */ |
| 1813 |
0x09, 0x00, /* nop */ |
| 1814 |
0x09, 0x00, /* nop */ |
| 1815 |
0x09, 0x00, /* nop */ |
| 1816 |
0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
| 1817 |
0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
| 1818 |
}; |
| 1819 |
|
| 1820 |
/* Sebsequent entries in an absolute procedure linkage table look like |
| 1821 |
this. */ |
| 1822 |
|
| 1823 |
static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] = |
| 1824 |
{ |
| 1825 |
0xd0, 0x04, /* mov.l 1f,r0 */ |
| 1826 |
0x60, 0x02, /* mov.l @(r0,r12),r0 */ |
| 1827 |
0xd1, 0x02, /* mov.l 0f,r1 */ |
| 1828 |
0x40, 0x2b, /* jmp @r0 */ |
| 1829 |
0x60, 0x13, /* mov r1,r0 */ |
| 1830 |
0xd1, 0x03, /* mov.l 2f,r1 */ |
| 1831 |
0x40, 0x2b, /* jmp @r0 */ |
| 1832 |
0x00, 0x09, /* nop */ |
| 1833 |
0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
| 1834 |
0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 1835 |
0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
| 1836 |
}; |
| 1837 |
|
| 1838 |
static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] = |
| 1839 |
{ |
| 1840 |
0x04, 0xd0, /* mov.l 1f,r0 */ |
| 1841 |
0x02, 0x60, /* mov.l @r0,r0 */ |
| 1842 |
0x02, 0xd1, /* mov.l 0f,r1 */ |
| 1843 |
0x2b, 0x40, /* jmp @r0 */ |
| 1844 |
0x13, 0x60, /* mov r1,r0 */ |
| 1845 |
0x03, 0xd1, /* mov.l 2f,r1 */ |
| 1846 |
0x2b, 0x40, /* jmp @r0 */ |
| 1847 |
0x09, 0x00, /* nop */ |
| 1848 |
0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
| 1849 |
0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 1850 |
0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
| 1851 |
}; |
| 1852 |
|
| 1853 |
/* Entries in a PIC procedure linkage table look like this. */ |
| 1854 |
|
| 1855 |
static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] = |
| 1856 |
{ |
| 1857 |
0xd0, 0x04, /* mov.l 1f,r0 */ |
| 1858 |
0x00, 0xce, /* mov.l @(r0,r12),r0 */ |
| 1859 |
0x40, 0x2b, /* jmp @r0 */ |
| 1860 |
0x00, 0x09, /* nop */ |
| 1861 |
0x50, 0xc2, /* mov.l @(8,r12),r0 */ |
| 1862 |
0xd1, 0x03, /* mov.l 2f,r1 */ |
| 1863 |
0x40, 0x2b, /* jmp @r0 */ |
| 1864 |
0x50, 0xc1, /* mov.l @(4,r12),r0 */ |
| 1865 |
0x00, 0x09, /* nop */ |
| 1866 |
0x00, 0x09, /* nop */ |
| 1867 |
0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 1868 |
0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
| 1869 |
}; |
| 1870 |
|
| 1871 |
static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] = |
| 1872 |
{ |
| 1873 |
0x04, 0xd0, /* mov.l 1f,r0 */ |
| 1874 |
0xce, 0x00, /* mov.l @(r0,r12),r0 */ |
| 1875 |
0x2b, 0x40, /* jmp @r0 */ |
| 1876 |
0x09, 0x00, /* nop */ |
| 1877 |
0xc2, 0x50, /* mov.l @(8,r12),r0 */ |
| 1878 |
0x03, 0xd1, /* mov.l 2f,r1 */ |
| 1879 |
0x2b, 0x40, /* jmp @r0 */ |
| 1880 |
0xc1, 0x50, /* mov.l @(4,r12),r0 */ |
| 1881 |
0x09, 0x00, /* nop */ |
| 1882 |
0x09, 0x00, /* nop */ |
| 1883 |
0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 1884 |
0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
| 1885 |
}; |
| 1886 |
|
| 1887 |
static const struct elf_sh_plt_info elf_sh_plts[2][2] = { |
| 1888 |
{ |
| 1889 |
{ |
| 1890 |
/* Big-endian non-PIC. */ |
| 1891 |
elf_sh_plt0_entry_be, |
| 1892 |
ELF_PLT_ENTRY_SIZE, |
| 1893 |
{ MINUS_ONE, 24, 20 }, |
| 1894 |
elf_sh_plt_entry_be, |
| 1895 |
ELF_PLT_ENTRY_SIZE, |
| 1896 |
{ 20, 16, 24 }, |
| 1897 |
8 |
| 1898 |
}, |
| 1899 |
{ |
| 1900 |
/* Little-endian non-PIC. */ |
| 1901 |
elf_sh_plt0_entry_le, |
| 1902 |
ELF_PLT_ENTRY_SIZE, |
| 1903 |
{ MINUS_ONE, 24, 20 }, |
| 1904 |
elf_sh_plt_entry_le, |
| 1905 |
ELF_PLT_ENTRY_SIZE, |
| 1906 |
{ 20, 16, 24 }, |
| 1907 |
8 |
| 1908 |
}, |
| 1909 |
}, |
| 1910 |
{ |
| 1911 |
{ |
| 1912 |
/* Big-endian PIC. */ |
| 1913 |
elf_sh_plt0_entry_be, |
| 1914 |
ELF_PLT_ENTRY_SIZE, |
| 1915 |
{ MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
| 1916 |
elf_sh_pic_plt_entry_be, |
| 1917 |
ELF_PLT_ENTRY_SIZE, |
| 1918 |
{ 20, MINUS_ONE, 24 }, |
| 1919 |
8 |
| 1920 |
}, |
| 1921 |
{ |
| 1922 |
/* Little-endian PIC. */ |
| 1923 |
elf_sh_plt0_entry_le, |
| 1924 |
ELF_PLT_ENTRY_SIZE, |
| 1925 |
{ MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
| 1926 |
elf_sh_pic_plt_entry_le, |
| 1927 |
ELF_PLT_ENTRY_SIZE, |
| 1928 |
{ 20, MINUS_ONE, 24 }, |
| 1929 |
8 |
| 1930 |
}, |
| 1931 |
} |
| 1932 |
}; |
| 1933 |
|
| 1934 |
#define VXWORKS_PLT_HEADER_SIZE 12 |
| 1935 |
#define VXWORKS_PLT_ENTRY_SIZE 24 |
| 1936 |
|
| 1937 |
static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] = |
| 1938 |
{ |
| 1939 |
0xd1, 0x01, /* mov.l @(8,pc),r1 */ |
| 1940 |
0x61, 0x12, /* mov.l @r1,r1 */ |
| 1941 |
0x41, 0x2b, /* jmp @r1 */ |
| 1942 |
0x00, 0x09, /* nop */ |
| 1943 |
0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */ |
| 1944 |
}; |
| 1945 |
|
| 1946 |
static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] = |
| 1947 |
{ |
| 1948 |
0x01, 0xd1, /* mov.l @(8,pc),r1 */ |
| 1949 |
0x12, 0x61, /* mov.l @r1,r1 */ |
| 1950 |
0x2b, 0x41, /* jmp @r1 */ |
| 1951 |
0x09, 0x00, /* nop */ |
| 1952 |
0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */ |
| 1953 |
}; |
| 1954 |
|
| 1955 |
static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] = |
| 1956 |
{ |
| 1957 |
0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
| 1958 |
0x60, 0x02, /* mov.l @r0,r0 */ |
| 1959 |
0x40, 0x2b, /* jmp @r0 */ |
| 1960 |
0x00, 0x09, /* nop */ |
| 1961 |
0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */ |
| 1962 |
0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
| 1963 |
0xa0, 0x00, /* bra PLT (We need to fix the offset.) */ |
| 1964 |
0x00, 0x09, /* nop */ |
| 1965 |
0x00, 0x09, /* nop */ |
| 1966 |
0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
| 1967 |
}; |
| 1968 |
|
| 1969 |
static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] = |
| 1970 |
{ |
| 1971 |
0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
| 1972 |
0x02, 0x60, /* mov.l @r0,r0 */ |
| 1973 |
0x2b, 0x40, /* jmp @r0 */ |
| 1974 |
0x09, 0x00, /* nop */ |
| 1975 |
0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */ |
| 1976 |
0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
| 1977 |
0x00, 0xa0, /* bra PLT (We need to fix the offset.) */ |
| 1978 |
0x09, 0x00, /* nop */ |
| 1979 |
0x09, 0x00, /* nop */ |
| 1980 |
0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
| 1981 |
}; |
| 1982 |
|
| 1983 |
static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] = |
| 1984 |
{ |
| 1985 |
0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
| 1986 |
0x00, 0xce, /* mov.l @(r0,r12),r0 */ |
| 1987 |
0x40, 0x2b, /* jmp @r0 */ |
| 1988 |
0x00, 0x09, /* nop */ |
| 1989 |
0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */ |
| 1990 |
0xd0, 0x01, /* mov.l @(8,pc),r0 */ |
| 1991 |
0x51, 0xc2, /* mov.l @(8,r12),r1 */ |
| 1992 |
0x41, 0x2b, /* jmp @r1 */ |
| 1993 |
0x00, 0x09, /* nop */ |
| 1994 |
0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
| 1995 |
}; |
| 1996 |
|
| 1997 |
static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] = |
| 1998 |
{ |
| 1999 |
0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
| 2000 |
0xce, 0x00, /* mov.l @(r0,r12),r0 */ |
| 2001 |
0x2b, 0x40, /* jmp @r0 */ |
| 2002 |
0x09, 0x00, /* nop */ |
| 2003 |
0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */ |
| 2004 |
0x01, 0xd0, /* mov.l @(8,pc),r0 */ |
| 2005 |
0xc2, 0x51, /* mov.l @(8,r12),r1 */ |
| 2006 |
0x2b, 0x41, /* jmp @r1 */ |
| 2007 |
0x09, 0x00, /* nop */ |
| 2008 |
0, 0, 0, 0, /* 1: replaced with offset into relocation table. */ |
| 2009 |
}; |
| 2010 |
|
| 2011 |
static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = { |
| 2012 |
{ |
| 2013 |
{ |
| 2014 |
/* Big-endian non-PIC. */ |
| 2015 |
vxworks_sh_plt0_entry_be, |
| 2016 |
VXWORKS_PLT_HEADER_SIZE, |
| 2017 |
{ MINUS_ONE, MINUS_ONE, 8 }, |
| 2018 |
vxworks_sh_plt_entry_be, |
| 2019 |
VXWORKS_PLT_ENTRY_SIZE, |
| 2020 |
{ 8, 14, 20 }, |
| 2021 |
12 |
| 2022 |
}, |
| 2023 |
{ |
| 2024 |
/* Little-endian non-PIC. */ |
| 2025 |
vxworks_sh_plt0_entry_le, |
| 2026 |
VXWORKS_PLT_HEADER_SIZE, |
| 2027 |
{ MINUS_ONE, MINUS_ONE, 8 }, |
| 2028 |
vxworks_sh_plt_entry_le, |
| 2029 |
VXWORKS_PLT_ENTRY_SIZE, |
| 2030 |
{ 8, 14, 20 }, |
| 2031 |
12 |
| 2032 |
}, |
| 2033 |
}, |
| 2034 |
{ |
| 2035 |
{ |
| 2036 |
/* Big-endian PIC. */ |
| 2037 |
NULL, |
| 2038 |
0, |
| 2039 |
{ MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
| 2040 |
vxworks_sh_pic_plt_entry_be, |
| 2041 |
VXWORKS_PLT_ENTRY_SIZE, |
| 2042 |
{ 8, MINUS_ONE, 20 }, |
| 2043 |
12 |
| 2044 |
}, |
| 2045 |
{ |
| 2046 |
/* Little-endian PIC. */ |
| 2047 |
NULL, |
| 2048 |
0, |
| 2049 |
{ MINUS_ONE, MINUS_ONE, MINUS_ONE }, |
| 2050 |
vxworks_sh_pic_plt_entry_le, |
| 2051 |
VXWORKS_PLT_ENTRY_SIZE, |
| 2052 |
{ 8, MINUS_ONE, 20 }, |
| 2053 |
12 |
| 2054 |
}, |
| 2055 |
} |
| 2056 |
}; |
| 2057 |
|
| 2058 |
/* Return the type of PLT associated with ABFD. PIC_P is true if |
| 2059 |
the object is position-independent. */ |
| 2060 |
|
| 2061 |
static const struct elf_sh_plt_info * |
| 2062 |
get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p) |
| 2063 |
{ |
| 2064 |
if (vxworks_object_p (abfd)) |
| 2065 |
return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)]; |
| 2066 |
return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)]; |
| 2067 |
} |
| 2068 |
|
| 2069 |
/* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD. |
| 2070 |
VALUE is the field's value and CODE_P is true if VALUE refers to code, |
| 2071 |
not data. */ |
| 2072 |
|
| 2073 |
inline static void |
| 2074 |
install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED, |
| 2075 |
unsigned long value, bfd_byte *addr) |
| 2076 |
{ |
| 2077 |
bfd_put_32 (output_bfd, value, addr); |
| 2078 |
} |
| 2079 |
#endif |
| 2080 |
|
| 2081 |
/* Return the index of the PLT entry at byte offset OFFSET. */ |
| 2082 |
|
| 2083 |
static bfd_vma |
| 2084 |
get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset) |
| 2085 |
{ |
| 2086 |
return (offset - info->plt0_entry_size) / info->symbol_entry_size; |
| 2087 |
} |
| 2088 |
|
| 2089 |
/* Do the inverse operation. */ |
| 2090 |
|
| 2091 |
static bfd_vma |
| 2092 |
get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma index) |
| 2093 |
{ |
| 2094 |
return info->plt0_entry_size + (index * info->symbol_entry_size); |
| 2095 |
} |
| 2096 |
|
| 2097 |
/* The sh linker needs to keep track of the number of relocs that it |
| 2098 |
decides to copy as dynamic relocs in check_relocs for each symbol. |
| 2099 |
This is so that it can later discard them if they are found to be |
| 2100 |
unnecessary. We store the information in a field extending the |
| 2101 |
regular ELF linker hash table. */ |
| 2102 |
|
| 2103 |
struct elf_sh_dyn_relocs |
| 2104 |
{ |
| 2105 |
struct elf_sh_dyn_relocs *next; |
| 2106 |
|
| 2107 |
/* The input section of the reloc. */ |
| 2108 |
asection *sec; |
| 2109 |
|
| 2110 |
/* Total number of relocs copied for the input section. */ |
| 2111 |
bfd_size_type count; |
| 2112 |
|
| 2113 |
/* Number of pc-relative relocs copied for the input section. */ |
| 2114 |
bfd_size_type pc_count; |
| 2115 |
}; |
| 2116 |
|
| 2117 |
/* sh ELF linker hash entry. */ |
| 2118 |
|
| 2119 |
struct elf_sh_link_hash_entry |
| 2120 |
{ |
| 2121 |
struct elf_link_hash_entry root; |
| 2122 |
|
| 2123 |
#ifdef INCLUDE_SHMEDIA |
| 2124 |
union |
| 2125 |
{ |
| 2126 |
bfd_signed_vma refcount; |
| 2127 |
bfd_vma offset; |
| 2128 |
} datalabel_got; |
| 2129 |
#endif |
| 2130 |
|
| 2131 |
/* Track dynamic relocs copied for this symbol. */ |
| 2132 |
struct elf_sh_dyn_relocs *dyn_relocs; |
| 2133 |
|
| 2134 |
bfd_signed_vma gotplt_refcount; |
| 2135 |
|
| 2136 |
enum { |
| 2137 |
GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE |
| 2138 |
} tls_type; |
| 2139 |
}; |
| 2140 |
|
| 2141 |
#define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent)) |
| 2142 |
|
| 2143 |
struct sh_elf_obj_tdata |
| 2144 |
{ |
| 2145 |
struct elf_obj_tdata root; |
| 2146 |
|
| 2147 |
/* tls_type for each local got entry. */ |
| 2148 |
char *local_got_tls_type; |
| 2149 |
}; |
| 2150 |
|
| 2151 |
#define sh_elf_tdata(abfd) \ |
| 2152 |
((struct sh_elf_obj_tdata *) (abfd)->tdata.any) |
| 2153 |
|
| 2154 |
#define sh_elf_local_got_tls_type(abfd) \ |
| 2155 |
(sh_elf_tdata (abfd)->local_got_tls_type) |
| 2156 |
|
| 2157 |
#define is_sh_elf(bfd) \ |
| 2158 |
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \ |
| 2159 |
&& elf_tdata (bfd) != NULL \ |
| 2160 |
&& elf_object_id (bfd) == SH_ELF_TDATA) |
| 2161 |
|
| 2162 |
/* Override the generic function because we need to store sh_elf_obj_tdata |
| 2163 |
as the specific tdata. */ |
| 2164 |
|
| 2165 |
static bfd_boolean |
| 2166 |
sh_elf_mkobject (bfd *abfd) |
| 2167 |
{ |
| 2168 |
return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata), |
| 2169 |
SH_ELF_TDATA); |
| 2170 |
} |
| 2171 |
|
| 2172 |
/* sh ELF linker hash table. */ |
| 2173 |
|
| 2174 |
struct elf_sh_link_hash_table |
| 2175 |
{ |
| 2176 |
struct elf_link_hash_table root; |
| 2177 |
|
| 2178 |
/* Short-cuts to get to dynamic linker sections. */ |
| 2179 |
asection *sgot; |
| 2180 |
asection *sgotplt; |
| 2181 |
asection *srelgot; |
| 2182 |
asection *splt; |
| 2183 |
asection *srelplt; |
| 2184 |
asection *sdynbss; |
| 2185 |
asection *srelbss; |
| 2186 |
|
| 2187 |
/* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
| 2188 |
asection *srelplt2; |
| 2189 |
|
| 2190 |
/* Small local sym cache. */ |
| 2191 |
struct sym_cache sym_cache; |
| 2192 |
|
| 2193 |
/* A counter or offset to track a TLS got entry. */ |
| 2194 |
union |
| 2195 |
{ |
| 2196 |
bfd_signed_vma refcount; |
| 2197 |
bfd_vma offset; |
| 2198 |
} tls_ldm_got; |
| 2199 |
|
| 2200 |
/* The type of PLT to use. */ |
| 2201 |
const struct elf_sh_plt_info *plt_info; |
| 2202 |
|
| 2203 |
/* True if the target system is VxWorks. */ |
| 2204 |
bfd_boolean vxworks_p; |
| 2205 |
}; |
| 2206 |
|
| 2207 |
/* Traverse an sh ELF linker hash table. */ |
| 2208 |
|
| 2209 |
#define sh_elf_link_hash_traverse(table, func, info) \ |
| 2210 |
(elf_link_hash_traverse \ |
| 2211 |
(&(table)->root, \ |
| 2212 |
(bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
| 2213 |
(info))) |
| 2214 |
|
| 2215 |
/* Get the sh ELF linker hash table from a link_info structure. */ |
| 2216 |
|
| 2217 |
#define sh_elf_hash_table(p) \ |
| 2218 |
((struct elf_sh_link_hash_table *) ((p)->hash)) |
| 2219 |
|
| 2220 |
/* Create an entry in an sh ELF linker hash table. */ |
| 2221 |
|
| 2222 |
static struct bfd_hash_entry * |
| 2223 |
sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 2224 |
struct bfd_hash_table *table, |
| 2225 |
const char *string) |
| 2226 |
{ |
| 2227 |
struct elf_sh_link_hash_entry *ret = |
| 2228 |
(struct elf_sh_link_hash_entry *) entry; |
| 2229 |
|
| 2230 |
/* Allocate the structure if it has not already been allocated by a |
| 2231 |
subclass. */ |
| 2232 |
if (ret == (struct elf_sh_link_hash_entry *) NULL) |
| 2233 |
ret = ((struct elf_sh_link_hash_entry *) |
| 2234 |
bfd_hash_allocate (table, |
| 2235 |
sizeof (struct elf_sh_link_hash_entry))); |
| 2236 |
if (ret == (struct elf_sh_link_hash_entry *) NULL) |
| 2237 |
return (struct bfd_hash_entry *) ret; |
| 2238 |
|
| 2239 |
/* Call the allocation method of the superclass. */ |
| 2240 |
ret = ((struct elf_sh_link_hash_entry *) |
| 2241 |
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 2242 |
table, string)); |
| 2243 |
if (ret != (struct elf_sh_link_hash_entry *) NULL) |
| 2244 |
{ |
| 2245 |
ret->dyn_relocs = NULL; |
| 2246 |
ret->gotplt_refcount = 0; |
| 2247 |
#ifdef INCLUDE_SHMEDIA |
| 2248 |
ret->datalabel_got.refcount = ret->root.got.refcount; |
| 2249 |
#endif |
| 2250 |
ret->tls_type = GOT_UNKNOWN; |
| 2251 |
} |
| 2252 |
|
| 2253 |
return (struct bfd_hash_entry *) ret; |
| 2254 |
} |
| 2255 |
|
| 2256 |
/* Create an sh ELF linker hash table. */ |
| 2257 |
|
| 2258 |
static struct bfd_link_hash_table * |
| 2259 |
sh_elf_link_hash_table_create (bfd *abfd) |
| 2260 |
{ |
| 2261 |
struct elf_sh_link_hash_table *ret; |
| 2262 |
bfd_size_type amt = sizeof (struct elf_sh_link_hash_table); |
| 2263 |
|
| 2264 |
ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt); |
| 2265 |
if (ret == (struct elf_sh_link_hash_table *) NULL) |
| 2266 |
return NULL; |
| 2267 |
|
| 2268 |
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 2269 |
sh_elf_link_hash_newfunc, |
| 2270 |
sizeof (struct elf_sh_link_hash_entry))) |
| 2271 |
{ |
| 2272 |
free (ret); |
| 2273 |
return NULL; |
| 2274 |
} |
| 2275 |
|
| 2276 |
ret->sgot = NULL; |
| 2277 |
ret->sgotplt = NULL; |
| 2278 |
ret->srelgot = NULL; |
| 2279 |
ret->splt = NULL; |
| 2280 |
ret->srelplt = NULL; |
| 2281 |
ret->sdynbss = NULL; |
| 2282 |
ret->srelbss = NULL; |
| 2283 |
ret->srelplt2 = NULL; |
| 2284 |
ret->sym_cache.abfd = NULL; |
| 2285 |
ret->tls_ldm_got.refcount = 0; |
| 2286 |
ret->plt_info = NULL; |
| 2287 |
ret->vxworks_p = vxworks_object_p (abfd); |
| 2288 |
|
| 2289 |
return &ret->root.root; |
| 2290 |
} |
| 2291 |
|
| 2292 |
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up |
| 2293 |
shortcuts to them in our hash table. */ |
| 2294 |
|
| 2295 |
static bfd_boolean |
| 2296 |
create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 2297 |
{ |
| 2298 |
struct elf_sh_link_hash_table *htab; |
| 2299 |
|
| 2300 |
if (! _bfd_elf_create_got_section (dynobj, info)) |
| 2301 |
return FALSE; |
| 2302 |
|
| 2303 |
htab = sh_elf_hash_table (info); |
| 2304 |
htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2305 |
htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 2306 |
htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 2307 |
if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) |
| 2308 |
abort (); |
| 2309 |
return TRUE; |
| 2310 |
} |
| 2311 |
|
| 2312 |
/* Create dynamic sections when linking against a dynamic object. */ |
| 2313 |
|
| 2314 |
static bfd_boolean |
| 2315 |
sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 2316 |
{ |
| 2317 |
struct elf_sh_link_hash_table *htab; |
| 2318 |
flagword flags, pltflags; |
| 2319 |
register asection *s; |
| 2320 |
const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 2321 |
int ptralign = 0; |
| 2322 |
|
| 2323 |
switch (bed->s->arch_size) |
| 2324 |
{ |
| 2325 |
case 32: |
| 2326 |
ptralign = 2; |
| 2327 |
break; |
| 2328 |
|
| 2329 |
case 64: |
| 2330 |
ptralign = 3; |
| 2331 |
break; |
| 2332 |
|
| 2333 |
default: |
| 2334 |
bfd_set_error (bfd_error_bad_value); |
| 2335 |
return FALSE; |
| 2336 |
} |
| 2337 |
|
| 2338 |
htab = sh_elf_hash_table (info); |
| 2339 |
if (htab->root.dynamic_sections_created) |
| 2340 |
return TRUE; |
| 2341 |
|
| 2342 |
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 2343 |
.rel[a].bss sections. */ |
| 2344 |
|
| 2345 |
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 2346 |
| SEC_LINKER_CREATED); |
| 2347 |
|
| 2348 |
pltflags = flags; |
| 2349 |
pltflags |= SEC_CODE; |
| 2350 |
if (bed->plt_not_loaded) |
| 2351 |
pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); |
| 2352 |
if (bed->plt_readonly) |
| 2353 |
pltflags |= SEC_READONLY; |
| 2354 |
|
| 2355 |
s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
| 2356 |
htab->splt = s; |
| 2357 |
if (s == NULL |
| 2358 |
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 2359 |
return FALSE; |
| 2360 |
|
| 2361 |
if (bed->want_plt_sym) |
| 2362 |
{ |
| 2363 |
/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 2364 |
.plt section. */ |
| 2365 |
struct elf_link_hash_entry *h; |
| 2366 |
struct bfd_link_hash_entry *bh = NULL; |
| 2367 |
|
| 2368 |
if (! (_bfd_generic_link_add_one_symbol |
| 2369 |
(info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
| 2370 |
(bfd_vma) 0, (const char *) NULL, FALSE, |
| 2371 |
get_elf_backend_data (abfd)->collect, &bh))) |
| 2372 |
return FALSE; |
| 2373 |
|
| 2374 |
h = (struct elf_link_hash_entry *) bh; |
| 2375 |
h->def_regular = 1; |
| 2376 |
h->type = STT_OBJECT; |
| 2377 |
htab->root.hplt = h; |
| 2378 |
|
| 2379 |
if (info->shared |
| 2380 |
&& ! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2381 |
return FALSE; |
| 2382 |
} |
| 2383 |
|
| 2384 |
s = bfd_make_section_with_flags (abfd, |
| 2385 |
bed->default_use_rela_p ? ".rela.plt" : ".rel.plt", |
| 2386 |
flags | SEC_READONLY); |
| 2387 |
htab->srelplt = s; |
| 2388 |
if (s == NULL |
| 2389 |
|| ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 2390 |
return FALSE; |
| 2391 |
|
| 2392 |
if (htab->sgot == NULL |
| 2393 |
&& !create_got_section (abfd, info)) |
| 2394 |
return FALSE; |
| 2395 |
|
| 2396 |
{ |
| 2397 |
const char *secname; |
| 2398 |
char *relname; |
| 2399 |
flagword secflags; |
| 2400 |
asection *sec; |
| 2401 |
|
| 2402 |
for (sec = abfd->sections; sec; sec = sec->next) |
| 2403 |
{ |
| 2404 |
secflags = bfd_get_section_flags (abfd, sec); |
| 2405 |
if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) |
| 2406 |
|| ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) |
| 2407 |
continue; |
| 2408 |
secname = bfd_get_section_name (abfd, sec); |
| 2409 |
relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); |
| 2410 |
strcpy (relname, ".rela"); |
| 2411 |
strcat (relname, secname); |
| 2412 |
if (bfd_get_section_by_name (abfd, secname)) |
| 2413 |
continue; |
| 2414 |
s = bfd_make_section_with_flags (abfd, relname, |
| 2415 |
flags | SEC_READONLY); |
| 2416 |
if (s == NULL |
| 2417 |
|| ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 2418 |
return FALSE; |
| 2419 |
} |
| 2420 |
} |
| 2421 |
|
| 2422 |
if (bed->want_dynbss) |
| 2423 |
{ |
| 2424 |
/* The .dynbss section is a place to put symbols which are defined |
| 2425 |
by dynamic objects, are referenced by regular objects, and are |
| 2426 |
not functions. We must allocate space for them in the process |
| 2427 |
image and use a R_*_COPY reloc to tell the dynamic linker to |
| 2428 |
initialize them at run time. The linker script puts the .dynbss |
| 2429 |
section into the .bss section of the final image. */ |
| 2430 |
s = bfd_make_section_with_flags (abfd, ".dynbss", |
| 2431 |
SEC_ALLOC | SEC_LINKER_CREATED); |
| 2432 |
htab->sdynbss = s; |
| 2433 |
if (s == NULL) |
| 2434 |
return FALSE; |
| 2435 |
|
| 2436 |
/* The .rel[a].bss section holds copy relocs. This section is not |
| 2437 |
normally needed. We need to create it here, though, so that the |
| 2438 |
linker will map it to an output section. We can't just create it |
| 2439 |
only if we need it, because we will not know whether we need it |
| 2440 |
until we have seen all the input files, and the first time the |
| 2441 |
main linker code calls BFD after examining all the input files |
| 2442 |
(size_dynamic_sections) the input sections have already been |
| 2443 |
mapped to the output sections. If the section turns out not to |
| 2444 |
be needed, we can discard it later. We will never need this |
| 2445 |
section when generating a shared object, since they do not use |
| 2446 |
copy relocs. */ |
| 2447 |
if (! info->shared) |
| 2448 |
{ |
| 2449 |
s = bfd_make_section_with_flags (abfd, |
| 2450 |
(bed->default_use_rela_p |
| 2451 |
? ".rela.bss" : ".rel.bss"), |
| 2452 |
flags | SEC_READONLY); |
| 2453 |
htab->srelbss = s; |
| 2454 |
if (s == NULL |
| 2455 |
|| ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 2456 |
return FALSE; |
| 2457 |
} |
| 2458 |
} |
| 2459 |
|
| 2460 |
if (htab->vxworks_p) |
| 2461 |
{ |
| 2462 |
if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2)) |
| 2463 |
return FALSE; |
| 2464 |
} |
| 2465 |
|
| 2466 |
return TRUE; |
| 2467 |
} |
| 2468 |
|
| 2469 |
/* Adjust a symbol defined by a dynamic object and referenced by a |
| 2470 |
regular object. The current definition is in some section of the |
| 2471 |
dynamic object, but we're not including those sections. We have to |
| 2472 |
change the definition to something the rest of the link can |
| 2473 |
understand. */ |
| 2474 |
|
| 2475 |
static bfd_boolean |
| 2476 |
sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 2477 |
struct elf_link_hash_entry *h) |
| 2478 |
{ |
| 2479 |
struct elf_sh_link_hash_table *htab; |
| 2480 |
struct elf_sh_link_hash_entry *eh; |
| 2481 |
struct elf_sh_dyn_relocs *p; |
| 2482 |
asection *s; |
| 2483 |
|
| 2484 |
htab = sh_elf_hash_table (info); |
| 2485 |
|
| 2486 |
/* Make sure we know what is going on here. */ |
| 2487 |
BFD_ASSERT (htab->root.dynobj != NULL |
| 2488 |
&& (h->needs_plt |
| 2489 |
|| h->u.weakdef != NULL |
| 2490 |
|| (h->def_dynamic |
| 2491 |
&& h->ref_regular |
| 2492 |
&& !h->def_regular))); |
| 2493 |
|
| 2494 |
/* If this is a function, put it in the procedure linkage table. We |
| 2495 |
will fill in the contents of the procedure linkage table later, |
| 2496 |
when we know the address of the .got section. */ |
| 2497 |
if (h->type == STT_FUNC |
| 2498 |
|| h->needs_plt) |
| 2499 |
{ |
| 2500 |
if (h->plt.refcount <= 0 |
| 2501 |
|| SYMBOL_CALLS_LOCAL (info, h) |
| 2502 |
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
| 2503 |
&& h->root.type == bfd_link_hash_undefweak)) |
| 2504 |
{ |
| 2505 |
/* This case can occur if we saw a PLT reloc in an input |
| 2506 |
file, but the symbol was never referred to by a dynamic |
| 2507 |
object. In such a case, we don't actually need to build |
| 2508 |
a procedure linkage table, and we can just do a REL32 |
| 2509 |
reloc instead. */ |
| 2510 |
h->plt.offset = (bfd_vma) -1; |
| 2511 |
h->needs_plt = 0; |
| 2512 |
} |
| 2513 |
|
| 2514 |
return TRUE; |
| 2515 |
} |
| 2516 |
else |
| 2517 |
h->plt.offset = (bfd_vma) -1; |
| 2518 |
|
| 2519 |
/* If this is a weak symbol, and there is a real definition, the |
| 2520 |
processor independent code will have arranged for us to see the |
| 2521 |
real definition first, and we can just use the same value. */ |
| 2522 |
if (h->u.weakdef != NULL) |
| 2523 |
{ |
| 2524 |
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 2525 |
|| h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 2526 |
h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 2527 |
h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 2528 |
if (info->nocopyreloc) |
| 2529 |
h->non_got_ref = h->u.weakdef->non_got_ref; |
| 2530 |
return TRUE; |
| 2531 |
} |
| 2532 |
|
| 2533 |
/* This is a reference to a symbol defined by a dynamic object which |
| 2534 |
is not a function. */ |
| 2535 |
|
| 2536 |
/* If we are creating a shared library, we must presume that the |
| 2537 |
only references to the symbol are via the global offset table. |
| 2538 |
For such cases we need not do anything here; the relocations will |
| 2539 |
be handled correctly by relocate_section. */ |
| 2540 |
if (info->shared) |
| 2541 |
return TRUE; |
| 2542 |
|
| 2543 |
/* If there are no references to this symbol that do not use the |
| 2544 |
GOT, we don't need to generate a copy reloc. */ |
| 2545 |
if (!h->non_got_ref) |
| 2546 |
return TRUE; |
| 2547 |
|
| 2548 |
/* If -z nocopyreloc was given, we won't generate them either. */ |
| 2549 |
if (info->nocopyreloc) |
| 2550 |
{ |
| 2551 |
h->non_got_ref = 0; |
| 2552 |
return TRUE; |
| 2553 |
} |
| 2554 |
|
| 2555 |
eh = (struct elf_sh_link_hash_entry *) h; |
| 2556 |
for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2557 |
{ |
| 2558 |
s = p->sec->output_section; |
| 2559 |
if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) |
| 2560 |
break; |
| 2561 |
} |
| 2562 |
|
| 2563 |
/* If we didn't find any dynamic relocs in sections which needs the |
| 2564 |
copy reloc, then we'll be keeping the dynamic relocs and avoiding |
| 2565 |
the copy reloc. */ |
| 2566 |
if (p == NULL) |
| 2567 |
{ |
| 2568 |
h->non_got_ref = 0; |
| 2569 |
return TRUE; |
| 2570 |
} |
| 2571 |
|
| 2572 |
if (h->size == 0) |
| 2573 |
{ |
| 2574 |
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), |
| 2575 |
h->root.root.string); |
| 2576 |
return TRUE; |
| 2577 |
} |
| 2578 |
|
| 2579 |
/* We must allocate the symbol in our .dynbss section, which will |
| 2580 |
become part of the .bss section of the executable. There will be |
| 2581 |
an entry for this symbol in the .dynsym section. The dynamic |
| 2582 |
object will contain position independent code, so all references |
| 2583 |
from the dynamic object to this symbol will go through the global |
| 2584 |
offset table. The dynamic linker will use the .dynsym entry to |
| 2585 |
determine the address it must put in the global offset table, so |
| 2586 |
both the dynamic object and the regular object will refer to the |
| 2587 |
same memory location for the variable. */ |
| 2588 |
|
| 2589 |
s = htab->sdynbss; |
| 2590 |
BFD_ASSERT (s != NULL); |
| 2591 |
|
| 2592 |
/* We must generate a R_SH_COPY reloc to tell the dynamic linker to |
| 2593 |
copy the initial value out of the dynamic object and into the |
| 2594 |
runtime process image. We need to remember the offset into the |
| 2595 |
.rela.bss section we are going to use. */ |
| 2596 |
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 2597 |
{ |
| 2598 |
asection *srel; |
| 2599 |
|
| 2600 |
srel = htab->srelbss; |
| 2601 |
BFD_ASSERT (srel != NULL); |
| 2602 |
srel->size += sizeof (Elf32_External_Rela); |
| 2603 |
h->needs_copy = 1; |
| 2604 |
} |
| 2605 |
|
| 2606 |
return _bfd_elf_adjust_dynamic_copy (h, s); |
| 2607 |
} |
| 2608 |
|
| 2609 |
/* Allocate space in .plt, .got and associated reloc sections for |
| 2610 |
dynamic relocs. */ |
| 2611 |
|
| 2612 |
static bfd_boolean |
| 2613 |
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 2614 |
{ |
| 2615 |
struct bfd_link_info *info; |
| 2616 |
struct elf_sh_link_hash_table *htab; |
| 2617 |
struct elf_sh_link_hash_entry *eh; |
| 2618 |
struct elf_sh_dyn_relocs *p; |
| 2619 |
|
| 2620 |
if (h->root.type == bfd_link_hash_indirect) |
| 2621 |
return TRUE; |
| 2622 |
|
| 2623 |
if (h->root.type == bfd_link_hash_warning) |
| 2624 |
/* When warning symbols are created, they **replace** the "real" |
| 2625 |
entry in the hash table, thus we never get to see the real |
| 2626 |
symbol in a hash traversal. So look at it now. */ |
| 2627 |
h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2628 |
|
| 2629 |
info = (struct bfd_link_info *) inf; |
| 2630 |
htab = sh_elf_hash_table (info); |
| 2631 |
|
| 2632 |
eh = (struct elf_sh_link_hash_entry *) h; |
| 2633 |
if ((h->got.refcount > 0 |
| 2634 |
|| h->forced_local) |
| 2635 |
&& eh->gotplt_refcount > 0) |
| 2636 |
{ |
| 2637 |
/* The symbol has been forced local, or we have some direct got refs, |
| 2638 |
so treat all the gotplt refs as got refs. */ |
| 2639 |
h->got.refcount += eh->gotplt_refcount; |
| 2640 |
if (h->plt.refcount >= eh->gotplt_refcount) |
| 2641 |
h->plt.refcount -= eh->gotplt_refcount; |
| 2642 |
} |
| 2643 |
|
| 2644 |
if (htab->root.dynamic_sections_created |
| 2645 |
&& h->plt.refcount > 0 |
| 2646 |
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 2647 |
|| h->root.type != bfd_link_hash_undefweak)) |
| 2648 |
{ |
| 2649 |
/* Make sure this symbol is output as a dynamic symbol. |
| 2650 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 2651 |
if (h->dynindx == -1 |
| 2652 |
&& !h->forced_local) |
| 2653 |
{ |
| 2654 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2655 |
return FALSE; |
| 2656 |
} |
| 2657 |
|
| 2658 |
if (info->shared |
| 2659 |
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
| 2660 |
{ |
| 2661 |
asection *s = htab->splt; |
| 2662 |
|
| 2663 |
/* If this is the first .plt entry, make room for the special |
| 2664 |
first entry. */ |
| 2665 |
if (s->size == 0) |
| 2666 |
s->size += htab->plt_info->plt0_entry_size; |
| 2667 |
|
| 2668 |
h->plt.offset = s->size; |
| 2669 |
|
| 2670 |
/* If this symbol is not defined in a regular file, and we are |
| 2671 |
not generating a shared library, then set the symbol to this |
| 2672 |
location in the .plt. This is required to make function |
| 2673 |
pointers compare as equal between the normal executable and |
| 2674 |
the shared library. */ |
| 2675 |
if (! info->shared |
| 2676 |
&& !h->def_regular) |
| 2677 |
{ |
| 2678 |
h->root.u.def.section = s; |
| 2679 |
h->root.u.def.value = h->plt.offset; |
| 2680 |
} |
| 2681 |
|
| 2682 |
/* Make room for this entry. */ |
| 2683 |
s->size += htab->plt_info->symbol_entry_size; |
| 2684 |
|
| 2685 |
/* We also need to make an entry in the .got.plt section, which |
| 2686 |
will be placed in the .got section by the linker script. */ |
| 2687 |
htab->sgotplt->size += 4; |
| 2688 |
|
| 2689 |
/* We also need to make an entry in the .rel.plt section. */ |
| 2690 |
htab->srelplt->size += sizeof (Elf32_External_Rela); |
| 2691 |
|
| 2692 |
if (htab->vxworks_p && !info->shared) |
| 2693 |
{ |
| 2694 |
/* VxWorks executables have a second set of relocations |
| 2695 |
for each PLT entry. They go in a separate relocation |
| 2696 |
section, which is processed by the kernel loader. */ |
| 2697 |
|
| 2698 |
/* There is a relocation for the initial PLT entry: |
| 2699 |
an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */ |
| 2700 |
if (h->plt.offset == htab->plt_info->plt0_entry_size) |
| 2701 |
htab->srelplt2->size += sizeof (Elf32_External_Rela); |
| 2702 |
|
| 2703 |
/* There are two extra relocations for each subsequent |
| 2704 |
PLT entry: an R_SH_DIR32 relocation for the GOT entry, |
| 2705 |
and an R_SH_DIR32 relocation for the PLT entry. */ |
| 2706 |
htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2; |
| 2707 |
} |
| 2708 |
} |
| 2709 |
else |
| 2710 |
{ |
| 2711 |
h->plt.offset = (bfd_vma) -1; |
| 2712 |
h->needs_plt = 0; |
| 2713 |
} |
| 2714 |
} |
| 2715 |
else |
| 2716 |
{ |
| 2717 |
h->plt.offset = (bfd_vma) -1; |
| 2718 |
h->needs_plt = 0; |
| 2719 |
} |
| 2720 |
|
| 2721 |
if (h->got.refcount > 0) |
| 2722 |
{ |
| 2723 |
asection *s; |
| 2724 |
bfd_boolean dyn; |
| 2725 |
int tls_type = sh_elf_hash_entry (h)->tls_type; |
| 2726 |
|
| 2727 |
/* Make sure this symbol is output as a dynamic symbol. |
| 2728 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 2729 |
if (h->dynindx == -1 |
| 2730 |
&& !h->forced_local) |
| 2731 |
{ |
| 2732 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2733 |
return FALSE; |
| 2734 |
} |
| 2735 |
|
| 2736 |
s = htab->sgot; |
| 2737 |
h->got.offset = s->size; |
| 2738 |
s->size += 4; |
| 2739 |
/* R_SH_TLS_GD needs 2 consecutive GOT slots. */ |
| 2740 |
if (tls_type == GOT_TLS_GD) |
| 2741 |
s->size += 4; |
| 2742 |
dyn = htab->root.dynamic_sections_created; |
| 2743 |
/* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic, |
| 2744 |
R_SH_TLS_GD needs one if local symbol and two if global. */ |
| 2745 |
if ((tls_type == GOT_TLS_GD && h->dynindx == -1) |
| 2746 |
|| (tls_type == GOT_TLS_IE && dyn)) |
| 2747 |
htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 2748 |
else if (tls_type == GOT_TLS_GD) |
| 2749 |
htab->srelgot->size += 2 * sizeof (Elf32_External_Rela); |
| 2750 |
else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 2751 |
|| h->root.type != bfd_link_hash_undefweak) |
| 2752 |
&& (info->shared |
| 2753 |
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) |
| 2754 |
htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 2755 |
} |
| 2756 |
else |
| 2757 |
h->got.offset = (bfd_vma) -1; |
| 2758 |
|
| 2759 |
#ifdef INCLUDE_SHMEDIA |
| 2760 |
if (eh->datalabel_got.refcount > 0) |
| 2761 |
{ |
| 2762 |
asection *s; |
| 2763 |
bfd_boolean dyn; |
| 2764 |
|
| 2765 |
/* Make sure this symbol is output as a dynamic symbol. |
| 2766 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 2767 |
if (h->dynindx == -1 |
| 2768 |
&& !h->forced_local) |
| 2769 |
{ |
| 2770 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2771 |
return FALSE; |
| 2772 |
} |
| 2773 |
|
| 2774 |
s = htab->sgot; |
| 2775 |
eh->datalabel_got.offset = s->size; |
| 2776 |
s->size += 4; |
| 2777 |
dyn = htab->root.dynamic_sections_created; |
| 2778 |
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) |
| 2779 |
htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 2780 |
} |
| 2781 |
else |
| 2782 |
eh->datalabel_got.offset = (bfd_vma) -1; |
| 2783 |
#endif |
| 2784 |
|
| 2785 |
if (eh->dyn_relocs == NULL) |
| 2786 |
return TRUE; |
| 2787 |
|
| 2788 |
/* In the shared -Bsymbolic case, discard space allocated for |
| 2789 |
dynamic pc-relative relocs against symbols which turn out to be |
| 2790 |
defined in regular objects. For the normal shared case, discard |
| 2791 |
space for pc-relative relocs that have become local due to symbol |
| 2792 |
visibility changes. */ |
| 2793 |
|
| 2794 |
if (info->shared) |
| 2795 |
{ |
| 2796 |
if (SYMBOL_CALLS_LOCAL (info, h)) |
| 2797 |
{ |
| 2798 |
struct elf_sh_dyn_relocs **pp; |
| 2799 |
|
| 2800 |
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 2801 |
{ |
| 2802 |
p->count -= p->pc_count; |
| 2803 |
p->pc_count = 0; |
| 2804 |
if (p->count == 0) |
| 2805 |
*pp = p->next; |
| 2806 |
else |
| 2807 |
pp = &p->next; |
| 2808 |
} |
| 2809 |
} |
| 2810 |
|
| 2811 |
if (htab->vxworks_p) |
| 2812 |
{ |
| 2813 |
struct elf_sh_dyn_relocs **pp; |
| 2814 |
|
| 2815 |
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 2816 |
{ |
| 2817 |
if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) |
| 2818 |
*pp = p->next; |
| 2819 |
else |
| 2820 |
pp = &p->next; |
| 2821 |
} |
| 2822 |
} |
| 2823 |
|
| 2824 |
/* Also discard relocs on undefined weak syms with non-default |
| 2825 |
visibility. */ |
| 2826 |
if (eh->dyn_relocs != NULL |
| 2827 |
&& h->root.type == bfd_link_hash_undefweak) |
| 2828 |
{ |
| 2829 |
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 2830 |
eh->dyn_relocs = NULL; |
| 2831 |
|
| 2832 |
/* Make sure undefined weak symbols are output as a dynamic |
| 2833 |
symbol in PIEs. */ |
| 2834 |
else if (h->dynindx == -1 |
| 2835 |
&& !h->forced_local) |
| 2836 |
{ |
| 2837 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2838 |
return FALSE; |
| 2839 |
} |
| 2840 |
} |
| 2841 |
} |
| 2842 |
else |
| 2843 |
{ |
| 2844 |
/* For the non-shared case, discard space for relocs against |
| 2845 |
symbols which turn out to need copy relocs or are not |
| 2846 |
dynamic. */ |
| 2847 |
|
| 2848 |
if (!h->non_got_ref |
| 2849 |
&& ((h->def_dynamic |
| 2850 |
&& !h->def_regular) |
| 2851 |
|| (htab->root.dynamic_sections_created |
| 2852 |
&& (h->root.type == bfd_link_hash_undefweak |
| 2853 |
|| h->root.type == bfd_link_hash_undefined)))) |
| 2854 |
{ |
| 2855 |
/* Make sure this symbol is output as a dynamic symbol. |
| 2856 |
Undefined weak syms won't yet be marked as dynamic. */ |
| 2857 |
if (h->dynindx == -1 |
| 2858 |
&& !h->forced_local) |
| 2859 |
{ |
| 2860 |
if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2861 |
return FALSE; |
| 2862 |
} |
| 2863 |
|
| 2864 |
/* If that succeeded, we know we'll be keeping all the |
| 2865 |
relocs. */ |
| 2866 |
if (h->dynindx != -1) |
| 2867 |
goto keep; |
| 2868 |
} |
| 2869 |
|
| 2870 |
eh->dyn_relocs = NULL; |
| 2871 |
|
| 2872 |
keep: ; |
| 2873 |
} |
| 2874 |
|
| 2875 |
/* Finally, allocate space. */ |
| 2876 |
for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2877 |
{ |
| 2878 |
asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 2879 |
sreloc->size += p->count * sizeof (Elf32_External_Rela); |
| 2880 |
} |
| 2881 |
|
| 2882 |
return TRUE; |
| 2883 |
} |
| 2884 |
|
| 2885 |
/* Find any dynamic relocs that apply to read-only sections. */ |
| 2886 |
|
| 2887 |
static bfd_boolean |
| 2888 |
readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 2889 |
{ |
| 2890 |
struct elf_sh_link_hash_entry *eh; |
| 2891 |
struct elf_sh_dyn_relocs *p; |
| 2892 |
|
| 2893 |
if (h->root.type == bfd_link_hash_warning) |
| 2894 |
h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2895 |
|
| 2896 |
eh = (struct elf_sh_link_hash_entry *) h; |
| 2897 |
for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2898 |
{ |
| 2899 |
asection *s = p->sec->output_section; |
| 2900 |
|
| 2901 |
if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 2902 |
{ |
| 2903 |
struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 2904 |
|
| 2905 |
info->flags |= DF_TEXTREL; |
| 2906 |
|
| 2907 |
/* Not an error, just cut short the traversal. */ |
| 2908 |
return FALSE; |
| 2909 |
} |
| 2910 |
} |
| 2911 |
return TRUE; |
| 2912 |
} |
| 2913 |
|
| 2914 |
/* This function is called after all the input files have been read, |
| 2915 |
and the input sections have been assigned to output sections. |
| 2916 |
It's a convenient place to determine the PLT style. */ |
| 2917 |
|
| 2918 |
static bfd_boolean |
| 2919 |
sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) |
| 2920 |
{ |
| 2921 |
sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared); |
| 2922 |
return TRUE; |
| 2923 |
} |
| 2924 |
|
| 2925 |
/* Set the sizes of the dynamic sections. */ |
| 2926 |
|
| 2927 |
static bfd_boolean |
| 2928 |
sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2929 |
struct bfd_link_info *info) |
| 2930 |
{ |
| 2931 |
struct elf_sh_link_hash_table *htab; |
| 2932 |
bfd *dynobj; |
| 2933 |
asection *s; |
| 2934 |
bfd_boolean relocs; |
| 2935 |
bfd *ibfd; |
| 2936 |
|
| 2937 |
htab = sh_elf_hash_table (info); |
| 2938 |
dynobj = htab->root.dynobj; |
| 2939 |
BFD_ASSERT (dynobj != NULL); |
| 2940 |
|
| 2941 |
if (htab->root.dynamic_sections_created) |
| 2942 |
{ |
| 2943 |
/* Set the contents of the .interp section to the interpreter. */ |
| 2944 |
if (info->executable) |
| 2945 |
{ |
| 2946 |
s = bfd_get_section_by_name (dynobj, ".interp"); |
| 2947 |
BFD_ASSERT (s != NULL); |
| 2948 |
s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 2949 |
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 2950 |
} |
| 2951 |
} |
| 2952 |
|
| 2953 |
/* Set up .got offsets for local syms, and space for local dynamic |
| 2954 |
relocs. */ |
| 2955 |
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 2956 |
{ |
| 2957 |
bfd_signed_vma *local_got; |
| 2958 |
bfd_signed_vma *end_local_got; |
| 2959 |
char *local_tls_type; |
| 2960 |
bfd_size_type locsymcount; |
| 2961 |
Elf_Internal_Shdr *symtab_hdr; |
| 2962 |
asection *srel; |
| 2963 |
|
| 2964 |
if (! is_sh_elf (ibfd)) |
| 2965 |
continue; |
| 2966 |
|
| 2967 |
for (s = ibfd->sections; s != NULL; s = s->next) |
| 2968 |
{ |
| 2969 |
struct elf_sh_dyn_relocs *p; |
| 2970 |
|
| 2971 |
for (p = ((struct elf_sh_dyn_relocs *) |
| 2972 |
elf_section_data (s)->local_dynrel); |
| 2973 |
p != NULL; |
| 2974 |
p = p->next) |
| 2975 |
{ |
| 2976 |
if (! bfd_is_abs_section (p->sec) |
| 2977 |
&& bfd_is_abs_section (p->sec->output_section)) |
| 2978 |
{ |
| 2979 |
/* Input section has been discarded, either because |
| 2980 |
it is a copy of a linkonce section or due to |
| 2981 |
linker script /DISCARD/, so we'll be discarding |
| 2982 |
the relocs too. */ |
| 2983 |
} |
| 2984 |
else if (htab->vxworks_p |
| 2985 |
&& strcmp (p->sec->output_section->name, |
| 2986 |
".tls_vars") == 0) |
| 2987 |
{ |
| 2988 |
/* Relocations in vxworks .tls_vars sections are |
| 2989 |
handled specially by the loader. */ |
| 2990 |
} |
| 2991 |
else if (p->count != 0) |
| 2992 |
{ |
| 2993 |
srel = elf_section_data (p->sec)->sreloc; |
| 2994 |
srel->size += p->count * sizeof (Elf32_External_Rela); |
| 2995 |
if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 2996 |
info->flags |= DF_TEXTREL; |
| 2997 |
} |
| 2998 |
} |
| 2999 |
} |
| 3000 |
|
| 3001 |
local_got = elf_local_got_refcounts (ibfd); |
| 3002 |
if (!local_got) |
| 3003 |
continue; |
| 3004 |
|
| 3005 |
symtab_hdr = &elf_symtab_hdr (ibfd); |
| 3006 |
locsymcount = symtab_hdr->sh_info; |
| 3007 |
#ifdef INCLUDE_SHMEDIA |
| 3008 |
/* Count datalabel local GOT. */ |
| 3009 |
locsymcount *= 2; |
| 3010 |
#endif |
| 3011 |
end_local_got = local_got + locsymcount; |
| 3012 |
local_tls_type = sh_elf_local_got_tls_type (ibfd); |
| 3013 |
s = htab->sgot; |
| 3014 |
srel = htab->srelgot; |
| 3015 |
for (; local_got < end_local_got; ++local_got) |
| 3016 |
{ |
| 3017 |
if (*local_got > 0) |
| 3018 |
{ |
| 3019 |
*local_got = s->size; |
| 3020 |
s->size += 4; |
| 3021 |
if (*local_tls_type == GOT_TLS_GD) |
| 3022 |
s->size += 4; |
| 3023 |
if (info->shared) |
| 3024 |
srel->size += sizeof (Elf32_External_Rela); |
| 3025 |
} |
| 3026 |
else |
| 3027 |
*local_got = (bfd_vma) -1; |
| 3028 |
++local_tls_type; |
| 3029 |
} |
| 3030 |
} |
| 3031 |
|
| 3032 |
if (htab->tls_ldm_got.refcount > 0) |
| 3033 |
{ |
| 3034 |
/* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32 |
| 3035 |
relocs. */ |
| 3036 |
htab->tls_ldm_got.offset = htab->sgot->size; |
| 3037 |
htab->sgot->size += 8; |
| 3038 |
htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 3039 |
} |
| 3040 |
else |
| 3041 |
htab->tls_ldm_got.offset = -1; |
| 3042 |
|
| 3043 |
/* Allocate global sym .plt and .got entries, and space for global |
| 3044 |
sym dynamic relocs. */ |
| 3045 |
elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
| 3046 |
|
| 3047 |
/* We now have determined the sizes of the various dynamic sections. |
| 3048 |
Allocate memory for them. */ |
| 3049 |
relocs = FALSE; |
| 3050 |
for (s = dynobj->sections; s != NULL; s = s->next) |
| 3051 |
{ |
| 3052 |
if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 3053 |
continue; |
| 3054 |
|
| 3055 |
if (s == htab->splt |
| 3056 |
|| s == htab->sgot |
| 3057 |
|| s == htab->sgotplt |
| 3058 |
|| s == htab->sdynbss) |
| 3059 |
{ |
| 3060 |
/* Strip this section if we don't need it; see the |
| 3061 |
comment below. */ |
| 3062 |
} |
| 3063 |
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
| 3064 |
{ |
| 3065 |
if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2) |
| 3066 |
relocs = TRUE; |
| 3067 |
|
| 3068 |
/* We use the reloc_count field as a counter if we need |
| 3069 |
to copy relocs into the output file. */ |
| 3070 |
s->reloc_count = 0; |
| 3071 |
} |
| 3072 |
else |
| 3073 |
{ |
| 3074 |
/* It's not one of our sections, so don't allocate space. */ |
| 3075 |
continue; |
| 3076 |
} |
| 3077 |
|
| 3078 |
if (s->size == 0) |
| 3079 |
{ |
| 3080 |
/* If we don't need this section, strip it from the |
| 3081 |
output file. This is mostly to handle .rela.bss and |
| 3082 |
.rela.plt. We must create both sections in |
| 3083 |
create_dynamic_sections, because they must be created |
| 3084 |
before the linker maps input sections to output |
| 3085 |
sections. The linker does that before |
| 3086 |
adjust_dynamic_symbol is called, and it is that |
| 3087 |
function which decides whether anything needs to go |
| 3088 |
into these sections. */ |
| 3089 |
|
| 3090 |
s->flags |= SEC_EXCLUDE; |
| 3091 |
continue; |
| 3092 |
} |
| 3093 |
|
| 3094 |
if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 3095 |
continue; |
| 3096 |
|
| 3097 |
/* Allocate memory for the section contents. We use bfd_zalloc |
| 3098 |
here in case unused entries are not reclaimed before the |
| 3099 |
section's contents are written out. This should not happen, |
| 3100 |
but this way if it does, we get a R_SH_NONE reloc instead |
| 3101 |
of garbage. */ |
| 3102 |
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 3103 |
if (s->contents == NULL) |
| 3104 |
return FALSE; |
| 3105 |
} |
| 3106 |
|
| 3107 |
if (htab->root.dynamic_sections_created) |
| 3108 |
{ |
| 3109 |
/* Add some entries to the .dynamic section. We fill in the |
| 3110 |
values later, in sh_elf_finish_dynamic_sections, but we |
| 3111 |
must add the entries now so that we get the correct size for |
| 3112 |
the .dynamic section. The DT_DEBUG entry is filled in by the |
| 3113 |
dynamic linker and used by the debugger. */ |
| 3114 |
#define add_dynamic_entry(TAG, VAL) \ |
| 3115 |
_bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 3116 |
|
| 3117 |
if (info->executable) |
| 3118 |
{ |
| 3119 |
if (! add_dynamic_entry (DT_DEBUG, 0)) |
| 3120 |
return FALSE; |
| 3121 |
} |
| 3122 |
|
| 3123 |
if (htab->splt->size != 0) |
| 3124 |
{ |
| 3125 |
if (! add_dynamic_entry (DT_PLTGOT, 0) |
| 3126 |
|| ! add_dynamic_entry (DT_PLTRELSZ, 0) |
| 3127 |
|| ! add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 3128 |
|| ! add_dynamic_entry (DT_JMPREL, 0)) |
| 3129 |
return FALSE; |
| 3130 |
} |
| 3131 |
|
| 3132 |
if (relocs) |
| 3133 |
{ |
| 3134 |
if (! add_dynamic_entry (DT_RELA, 0) |
| 3135 |
|| ! add_dynamic_entry (DT_RELASZ, 0) |
| 3136 |
|| ! add_dynamic_entry (DT_RELAENT, |
| 3137 |
sizeof (Elf32_External_Rela))) |
| 3138 |
return FALSE; |
| 3139 |
|
| 3140 |
/* If any dynamic relocs apply to a read-only section, |
| 3141 |
then we need a DT_TEXTREL entry. */ |
| 3142 |
if ((info->flags & DF_TEXTREL) == 0) |
| 3143 |
elf_link_hash_traverse (&htab->root, readonly_dynrelocs, info); |
| 3144 |
|
| 3145 |
if ((info->flags & DF_TEXTREL) != 0) |
| 3146 |
{ |
| 3147 |
if (! add_dynamic_entry (DT_TEXTREL, 0)) |
| 3148 |
return FALSE; |
| 3149 |
} |
| 3150 |
} |
| 3151 |
if (htab->vxworks_p |
| 3152 |
&& !elf_vxworks_add_dynamic_entries (output_bfd, info)) |
| 3153 |
return FALSE; |
| 3154 |
} |
| 3155 |
#undef add_dynamic_entry |
| 3156 |
|
| 3157 |
return TRUE; |
| 3158 |
} |
| 3159 |
|
| 3160 |
/* Relocate an SH ELF section. */ |
| 3161 |
|
| 3162 |
static bfd_boolean |
| 3163 |
sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, |
| 3164 |
bfd *input_bfd, asection *input_section, |
| 3165 |
bfd_byte *contents, Elf_Internal_Rela *relocs, |
| 3166 |
Elf_Internal_Sym *local_syms, |
| 3167 |
asection **local_sections) |
| 3168 |
{ |
| 3169 |
struct elf_sh_link_hash_table *htab; |
| 3170 |
Elf_Internal_Shdr *symtab_hdr; |
| 3171 |
struct elf_link_hash_entry **sym_hashes; |
| 3172 |
Elf_Internal_Rela *rel, *relend; |
| 3173 |
bfd *dynobj; |
| 3174 |
bfd_vma *local_got_offsets; |
| 3175 |
asection *sgot; |
| 3176 |
asection *sgotplt; |
| 3177 |
asection *splt; |
| 3178 |
asection *sreloc; |
| 3179 |
asection *srelgot; |
| 3180 |
bfd_boolean is_vxworks_tls; |
| 3181 |
|
| 3182 |
BFD_ASSERT (is_sh_elf (input_bfd)); |
| 3183 |
|
| 3184 |
htab = sh_elf_hash_table (info); |
| 3185 |
symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 3186 |
sym_hashes = elf_sym_hashes (input_bfd); |
| 3187 |
dynobj = htab->root.dynobj; |
| 3188 |
local_got_offsets = elf_local_got_offsets (input_bfd); |
| 3189 |
|
| 3190 |
sgot = htab->sgot; |
| 3191 |
sgotplt = htab->sgotplt; |
| 3192 |
splt = htab->splt; |
| 3193 |
sreloc = NULL; |
| 3194 |
srelgot = NULL; |
| 3195 |
/* We have to handle relocations in vxworks .tls_vars sections |
| 3196 |
specially, because the dynamic loader is 'weird'. */ |
| 3197 |
is_vxworks_tls = (htab->vxworks_p && info->shared |
| 3198 |
&& !strcmp (input_section->output_section->name, |
| 3199 |
".tls_vars")); |
| 3200 |
|
| 3201 |
rel = relocs; |
| 3202 |
relend = relocs + input_section->reloc_count; |
| 3203 |
for (; rel < relend; rel++) |
| 3204 |
{ |
| 3205 |
int r_type; |
| 3206 |
reloc_howto_type *howto; |
| 3207 |
unsigned long r_symndx; |
| 3208 |
Elf_Internal_Sym *sym; |
| 3209 |
asection *sec; |
| 3210 |
struct elf_link_hash_entry *h; |
| 3211 |
bfd_vma relocation; |
| 3212 |
bfd_vma addend = (bfd_vma) 0; |
| 3213 |
bfd_reloc_status_type r; |
| 3214 |
int seen_stt_datalabel = 0; |
| 3215 |
bfd_vma off; |
| 3216 |
int tls_type; |
| 3217 |
|
| 3218 |
r_symndx = ELF32_R_SYM (rel->r_info); |
| 3219 |
|
| 3220 |
r_type = ELF32_R_TYPE (rel->r_info); |
| 3221 |
|
| 3222 |
/* Many of the relocs are only used for relaxing, and are |
| 3223 |
handled entirely by the relaxation code. */ |
| 3224 |
if (r_type >= (int) R_SH_GNU_VTINHERIT |
| 3225 |
&& r_type <= (int) R_SH_LABEL) |
| 3226 |
continue; |
| 3227 |
if (r_type == (int) R_SH_NONE) |
| 3228 |
continue; |
| 3229 |
|
| 3230 |
if (r_type < 0 |
| 3231 |
|| r_type >= R_SH_max |
| 3232 |
|| (r_type >= (int) R_SH_FIRST_INVALID_RELOC |
| 3233 |
&& r_type <= (int) R_SH_LAST_INVALID_RELOC) |
| 3234 |
|| ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3 |
| 3235 |
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_3) |
| 3236 |
|| ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4 |
| 3237 |
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_4) |
| 3238 |
|| ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5 |
| 3239 |
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_5) |
| 3240 |
|| (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2 |
| 3241 |
&& r_type <= (int) R_SH_LAST_INVALID_RELOC_2)) |
| 3242 |
{ |
| 3243 |
bfd_set_error (bfd_error_bad_value); |
| 3244 |
return FALSE; |
| 3245 |
} |
| 3246 |
|
| 3247 |
howto = get_howto_table (output_bfd) + r_type; |
| 3248 |
|
| 3249 |
/* For relocs that aren't partial_inplace, we get the addend from |
| 3250 |
the relocation. */ |
| 3251 |
if (! howto->partial_inplace) |
| 3252 |
addend = rel->r_addend; |
| 3253 |
|
| 3254 |
h = NULL; |
| 3255 |
sym = NULL; |
| 3256 |
sec = NULL; |
| 3257 |
if (r_symndx < symtab_hdr->sh_info) |
| 3258 |
{ |
| 3259 |
sym = local_syms + r_symndx; |
| 3260 |
sec = local_sections[r_symndx]; |
| 3261 |
relocation = (sec->output_section->vma |
| 3262 |
+ sec->output_offset |
| 3263 |
+ sym->st_value); |
| 3264 |
/* A local symbol never has STO_SH5_ISA32, so we don't need |
| 3265 |
datalabel processing here. Make sure this does not change |
| 3266 |
without notice. */ |
| 3267 |
if ((sym->st_other & STO_SH5_ISA32) != 0) |
| 3268 |
((*info->callbacks->reloc_dangerous) |
| 3269 |
(info, |
| 3270 |
_("Unexpected STO_SH5_ISA32 on local symbol is not handled"), |
| 3271 |
input_bfd, input_section, rel->r_offset)); |
| 3272 |
|
| 3273 |
if (sec != NULL && elf_discarded_section (sec)) |
| 3274 |
/* Handled below. */ |
| 3275 |
; |
| 3276 |
else if (info->relocatable) |
| 3277 |
{ |
| 3278 |
/* This is a relocatable link. We don't have to change |
| 3279 |
anything, unless the reloc is against a section symbol, |
| 3280 |
in which case we have to adjust according to where the |
| 3281 |
section symbol winds up in the output section. */ |
| 3282 |
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 3283 |
{ |
| 3284 |
if (! howto->partial_inplace) |
| 3285 |
{ |
| 3286 |
/* For relocations with the addend in the |
| 3287 |
relocation, we need just to update the addend. |
| 3288 |
All real relocs are of type partial_inplace; this |
| 3289 |
code is mostly for completeness. */ |
| 3290 |
rel->r_addend += sec->output_offset; |
| 3291 |
|
| 3292 |
continue; |
| 3293 |
} |
| 3294 |
|
| 3295 |
/* Relocs of type partial_inplace need to pick up the |
| 3296 |
contents in the contents and add the offset resulting |
| 3297 |
from the changed location of the section symbol. |
| 3298 |
Using _bfd_final_link_relocate (e.g. goto |
| 3299 |
final_link_relocate) here would be wrong, because |
| 3300 |
relocations marked pc_relative would get the current |
| 3301 |
location subtracted, and we must only do that at the |
| 3302 |
final link. */ |
| 3303 |
r = _bfd_relocate_contents (howto, input_bfd, |
| 3304 |
sec->output_offset |
| 3305 |
+ sym->st_value, |
| 3306 |
contents + rel->r_offset); |
| 3307 |
goto relocation_done; |
| 3308 |
} |
| 3309 |
|
| 3310 |
continue; |
| 3311 |
} |
| 3312 |
else if (! howto->partial_inplace) |
| 3313 |
{ |
| 3314 |
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 3315 |
addend = rel->r_addend; |
| 3316 |
} |
| 3317 |
else if ((sec->flags & SEC_MERGE) |
| 3318 |
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 3319 |
{ |
| 3320 |
asection *msec; |
| 3321 |
|
| 3322 |
if (howto->rightshift || howto->src_mask != 0xffffffff) |
| 3323 |
{ |
| 3324 |
(*_bfd_error_handler) |
| 3325 |
(_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), |
| 3326 |
input_bfd, input_section, |
| 3327 |
(long) rel->r_offset, howto->name); |
| 3328 |
return FALSE; |
| 3329 |
} |
| 3330 |
|
| 3331 |
addend = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3332 |
msec = sec; |
| 3333 |
addend = |
| 3334 |
_bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) |
| 3335 |
- relocation; |
| 3336 |
addend += msec->output_section->vma + msec->output_offset; |
| 3337 |
bfd_put_32 (input_bfd, addend, contents + rel->r_offset); |
| 3338 |
addend = 0; |
| 3339 |
} |
| 3340 |
} |
| 3341 |
else |
| 3342 |
{ |
| 3343 |
/* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */ |
| 3344 |
|
| 3345 |
relocation = 0; |
| 3346 |
h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3347 |
while (h->root.type == bfd_link_hash_indirect |
| 3348 |
|| h->root.type == bfd_link_hash_warning) |
| 3349 |
{ |
| 3350 |
#ifdef INCLUDE_SHMEDIA |
| 3351 |
/* If the reference passes a symbol marked with |
| 3352 |
STT_DATALABEL, then any STO_SH5_ISA32 on the final value |
| 3353 |
doesn't count. */ |
| 3354 |
seen_stt_datalabel |= h->type == STT_DATALABEL; |
| 3355 |
#endif |
| 3356 |
h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3357 |
} |
| 3358 |
if (h->root.type == bfd_link_hash_defined |
| 3359 |
|| h->root.type == bfd_link_hash_defweak) |
| 3360 |
{ |
| 3361 |
bfd_boolean dyn; |
| 3362 |
|
| 3363 |
dyn = htab->root.dynamic_sections_created; |
| 3364 |
sec = h->root.u.def.section; |
| 3365 |
/* In these cases, we don't need the relocation value. |
| 3366 |
We check specially because in some obscure cases |
| 3367 |
sec->output_section will be NULL. */ |
| 3368 |
if (r_type == R_SH_GOTPC |
| 3369 |
|| r_type == R_SH_GOTPC_LOW16 |
| 3370 |
|| r_type == R_SH_GOTPC_MEDLOW16 |
| 3371 |
|| r_type == R_SH_GOTPC_MEDHI16 |
| 3372 |
|| r_type == R_SH_GOTPC_HI16 |
| 3373 |
|| ((r_type == R_SH_PLT32 |
| 3374 |
|| r_type == R_SH_PLT_LOW16 |
| 3375 |
|| r_type == R_SH_PLT_MEDLOW16 |
| 3376 |
|| r_type == R_SH_PLT_MEDHI16 |
| 3377 |
|| r_type == R_SH_PLT_HI16) |
| 3378 |
&& h->plt.offset != (bfd_vma) -1) |
| 3379 |
|| ((r_type == R_SH_GOT32 |
| 3380 |
|| r_type == R_SH_GOT_LOW16 |
| 3381 |
|| r_type == R_SH_GOT_MEDLOW16 |
| 3382 |
|| r_type == R_SH_GOT_MEDHI16 |
| 3383 |
|| r_type == R_SH_GOT_HI16) |
| 3384 |
&& WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 3385 |
&& (! info->shared |
| 3386 |
|| (! info->symbolic && h->dynindx != -1) |
| 3387 |
|| !h->def_regular)) |
| 3388 |
/* The cases above are those in which relocation is |
| 3389 |
overwritten in the switch block below. The cases |
| 3390 |
below are those in which we must defer relocation |
| 3391 |
| |