/* SPARC-specific support for 64-bit ELF
- Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
-
-/* This is defined if one wants to build upward compatible binaries
- with the original sparc64-elf toolchain. The support is kept in for
- now but is turned off by default. dje 970930 */
-/*#define SPARC64_OLD_RELOCS*/
-
#include "elf/sparc.h"
+#include "opcode/sparc.h"
+#include "elfxx-sparc.h"
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
#define MINUS_ONE (~ (bfd_vma) 0)
-static reloc_howto_type *sparc64_elf_reloc_type_lookup
- PARAMS ((bfd *, bfd_reloc_code_real_type));
-static void sparc64_elf_info_to_howto
- PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-
-static boolean sparc64_elf_check_relocs
- PARAMS((bfd *, struct bfd_link_info *, asection *sec,
- const Elf_Internal_Rela *));
-static boolean sparc64_elf_adjust_dynamic_symbol
- PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *));
-static boolean sparc64_elf_size_dynamic_sections
- PARAMS((bfd *, struct bfd_link_info *));
-static boolean sparc64_elf_adjust_dynindx
- PARAMS((struct elf_link_hash_entry *, PTR));
-
-static boolean sparc64_elf_merge_private_bfd_data
- PARAMS ((bfd *, bfd *));
-
-static boolean sparc64_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static boolean sparc64_elf_object_p PARAMS ((bfd *));
-\f
-/* The relocation "howto" table. */
-
-static bfd_reloc_status_type sparc_elf_notsup_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type sparc_elf_wdisp16_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type sparc_elf_hix22_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type sparc_elf_lox10_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-
-static reloc_howto_type sparc64_elf_howto_table[] =
-{
- HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
- HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
- HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
- HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
- HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
- HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
- HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true),
- HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
- HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
- HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
- HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
- HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
- HOWTO(R_SPARC_GLOB_DAT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
- HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true),
- HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
- HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true),
-#ifndef SPARC64_OLD_RELOCS
- /* These aren't implemented yet. */
- HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true),
- HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
- HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
- HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
- HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
- HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
-#endif
- HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
- HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true),
- HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true),
- HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
- HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
- HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true),
- HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
- HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true),
- HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true),
- HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true),
- HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false),
- HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false),
- HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false),
- HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false),
- HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false),
- HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false),
- HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false),
- HOWTO(R_SPARC_UA64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true),
- HOWTO(R_SPARC_UA16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true)
-};
-
-struct elf_reloc_map {
- unsigned char bfd_reloc_val;
- unsigned char elf_reloc_val;
-};
-
-static CONST struct elf_reloc_map sparc_reloc_map[] =
-{
- { BFD_RELOC_NONE, R_SPARC_NONE, },
- { BFD_RELOC_16, R_SPARC_16, },
- { BFD_RELOC_8, R_SPARC_8 },
- { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
- { BFD_RELOC_CTOR, R_SPARC_64 },
- { BFD_RELOC_32, R_SPARC_32 },
- { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
- { BFD_RELOC_HI22, R_SPARC_HI22 },
- { BFD_RELOC_LO10, R_SPARC_LO10, },
- { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
- { BFD_RELOC_SPARC22, R_SPARC_22 },
- { BFD_RELOC_SPARC13, R_SPARC_13 },
- { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
- { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
- { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
- { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
- { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
- { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
- { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
- { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
- { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
- { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
- { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
- /* ??? Doesn't dwarf use this? */
-/*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
- {BFD_RELOC_SPARC_10, R_SPARC_10},
- {BFD_RELOC_SPARC_11, R_SPARC_11},
- {BFD_RELOC_SPARC_64, R_SPARC_64},
- {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10},
- {BFD_RELOC_SPARC_HH22, R_SPARC_HH22},
- {BFD_RELOC_SPARC_HM10, R_SPARC_HM10},
- {BFD_RELOC_SPARC_LM22, R_SPARC_LM22},
- {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22},
- {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10},
- {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22},
- {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16},
- {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19},
- {BFD_RELOC_SPARC_7, R_SPARC_7},
- {BFD_RELOC_SPARC_5, R_SPARC_5},
- {BFD_RELOC_SPARC_6, R_SPARC_6},
- {BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64},
- {BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64},
- {BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22},
- {BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10},
- {BFD_RELOC_SPARC_H44, R_SPARC_H44},
- {BFD_RELOC_SPARC_M44, R_SPARC_M44},
- {BFD_RELOC_SPARC_L44, R_SPARC_L44},
- {BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER}
-};
-
-static reloc_howto_type *
-sparc64_elf_reloc_type_lookup (abfd, code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
-{
- unsigned int i;
- for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
- {
- if (sparc_reloc_map[i].bfd_reloc_val == code)
- return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
- }
- return 0;
-}
-
-static void
-sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf64_Internal_Rela *dst;
-{
- BFD_ASSERT (ELF64_R_TYPE (dst->r_info) < (unsigned int) R_SPARC_max);
- cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE (dst->r_info)];
-}
-\f
-/* Utility for performing the standard initial work of an instruction
- relocation.
- *PRELOCATION will contain the relocated item.
- *PINSN will contain the instruction from the input stream.
- If the result is `bfd_reloc_other' the caller can continue with
- performing the relocation. Otherwise it must stop and return the
- value to its caller. */
-
-static bfd_reloc_status_type
-init_insn_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- prelocation,
- pinsn)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- bfd_vma *prelocation;
- bfd_vma *pinsn;
-{
- bfd_vma relocation;
- reloc_howto_type *howto = reloc_entry->howto;
-
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- /* This works because partial_inplace == false. */
- if (output_bfd != NULL)
- return bfd_reloc_continue;
+/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
+ section can represent up to two relocs, we must tell the user to allocate
+ more space. */
- if (reloc_entry->address > input_section->_cooked_size)
- return bfd_reloc_outofrange;
-
- relocation = (symbol->value
- + symbol->section->output_section->vma
- + symbol->section->output_offset);
- relocation += reloc_entry->addend;
- if (howto->pc_relative)
- {
- relocation -= (input_section->output_section->vma
- + input_section->output_offset);
- relocation -= reloc_entry->address;
- }
-
- *prelocation = relocation;
- *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
- return bfd_reloc_other;
-}
-
-/* For unsupported relocs. */
-
-static bfd_reloc_status_type
-sparc_elf_notsup_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
-{
- return bfd_reloc_notsupported;
-}
-
-/* Handle the WDISP16 reloc. */
-
-static bfd_reloc_status_type
-sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
-{
- bfd_vma relocation;
- bfd_vma insn;
- bfd_reloc_status_type status;
-
- status = init_insn_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, &relocation, &insn);
- if (status != bfd_reloc_other)
- return status;
-
- insn = (insn & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6)
- | ((relocation >> 2) & 0x3fff));
- bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
-
- if ((bfd_signed_vma) relocation < - 0x40000
- || (bfd_signed_vma) relocation > 0x3ffff)
- return bfd_reloc_overflow;
- else
- return bfd_reloc_ok;
-}
-
-/* Handle the HIX22 reloc. */
-
-static bfd_reloc_status_type
-sparc_elf_hix22_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
+static long
+elf64_sparc_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
{
- bfd_vma relocation;
- bfd_vma insn;
- bfd_reloc_status_type status;
-
- status = init_insn_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, &relocation, &insn);
- if (status != bfd_reloc_other)
- return status;
-
- relocation ^= MINUS_ONE;
- insn = (insn & ~0x3fffff) | ((relocation >> 10) & 0x3fffff);
- bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
-
- if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
- return bfd_reloc_overflow;
- else
- return bfd_reloc_ok;
+ return (sec->reloc_count * 2 + 1) * sizeof (arelent *);
}
-/* Handle the LOX10 reloc. */
-
-static bfd_reloc_status_type
-sparc_elf_lox10_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
+static long
+elf64_sparc_get_dynamic_reloc_upper_bound (bfd *abfd)
{
- bfd_vma relocation;
- bfd_vma insn;
- bfd_reloc_status_type status;
-
- status = init_insn_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, &relocation, &insn);
- if (status != bfd_reloc_other)
- return status;
-
- insn = (insn & ~0x1fff) | 0x1c00 | (relocation & 0x3ff);
- bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
-
- return bfd_reloc_ok;
+ return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2;
}
-\f
-/* PLT/GOT stuff */
-
-/* FIXME: Do Delta Doc PLT entries. */
-
-/* We use five different formats, chosing an optimal form for the
- code model used by the application/library. All of which provide
- the exact same interface to ld.so.
- FIXME, well, only three actually used right now -- fix up medlow
- and fullany later. */
-
-/* Both the headers and the entries are icache aligned. */
-#define PLT_HEADER_SIZE 32
-#define PLT_ENTRY_SIZE 32
-#define GOT_RESERVED_ENTRIES 3
-
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
-
-/* Values for fixups:
- 0 == got0
- 1 == got0 - plt0
- 2 == gotN
- 3 == gotN - pltN
- 4 == relN
- 5 == gotN@got
-*/
-struct plt_template
-{
- unsigned int insns[8];
- struct
- {
- unsigned char reloc;
- unsigned char value;
- } fixup[8];
-};
+/* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of
+ them. We cannot use generic elf routines for this, because R_SPARC_OLO10
+ has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations
+ for the same location, R_SPARC_LO10 and R_SPARC_13. */
-static const struct plt_template plt_medlow_header =
+static bfd_boolean
+elf64_sparc_slurp_one_reloc_table (bfd *abfd, asection *asect,
+ Elf_Internal_Shdr *rel_hdr,
+ asymbol **symbols, bfd_boolean dynamic)
{
- {
- 0x07000000, /* sethi %hi(got0),%g3 */
- 0x8610E000, /* or %g3,%lo(got0),%g3 */
- 0xC258E008, /* ldx [%g3+8],%g1 */
- 0x81C04000, /* jmp %g1 */
- 0xC258E010, /* ldx [%g3+16],%g1 */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_HI22, 0 },
- { R_SPARC_LO10, 0 },
- /* Rest null */
- }
-};
-
-static const struct plt_template plt_medlow_entry =
-{
- {
- 0x03000000, /* sethi %hi(gotN),%g1 */
- 0x05000000, /* sethi %hi(relN),%g2 */
- 0xC2586000, /* ldx [%g1+%lo(gotN)],%g1 */
- 0x8410A000, /* or %g2,%lo(relN),%g2 */
- 0x81C04000, /* jmp %g1 */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_HI22, 2 },
- { R_SPARC_HI22, 4 },
- { R_SPARC_LO10, 2 },
- { R_SPARC_LO10, 2 }
- }
-};
-
-static const struct plt_template plt_medany_header =
-{
- {
- 0x07000000, /* sethi %hi(got0),%g3 */
- 0x8610E000, /* or %g3,%lo(got0),%g3 */
- 0x8600C004, /* add %g3,%g4,%g3 */
- 0xC258E008, /* ldx [%g3+8],%g1 */
- 0x81C04000, /* jmp %g1 */
- 0xC258E010, /* ldx [%g3+16],%g1 */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- },
- {
- { R_SPARC_HI22, 0 },
- { R_SPARC_LO10, 0 }
- }
-};
-
-static const struct plt_template plt_medany_entry =
-{
- {
- 0x03000000, /* sethi %hi(gotN),%g1 */
- 0x82106000, /* or %g1,%lo(gotN),%g1 */
- 0xC2584004, /* ldx [%g1+%g4],%g1 */
- 0x05000000, /* sethi %hi(relN),%g2 */
- 0x81C04000, /* jmp %g1 */
- 0x8410A000, /* or %g2,%lo(relN),%g2 */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_HI22, 2 },
- { R_SPARC_LO10, 2 },
- { R_SPARC_NONE, 0 },
- { R_SPARC_HI22, 4 },
- { R_SPARC_NONE, 0 },
- { R_SPARC_LO10, 4 }
- }
-};
+ PTR allocated = NULL;
+ bfd_byte *native_relocs;
+ arelent *relent;
+ unsigned int i;
+ int entsize;
+ bfd_size_type count;
+ arelent *relents;
-static const struct plt_template plt_fullany_header =
-{
- {
- 0x07000000, /* sethi %hi(got0-plt0),%g3 */
- 0x8610E000, /* or %g3,%lo(got0-plt0),%g3 */
- 0x86004003, /* add %g1,%g3,%g3 */
- 0xC258C008, /* ldx [%g3+8],%g1 */
- 0x81C04000, /* jmp %g1 */
- 0xC258E010, /* ldx [%g3+16],%g1 */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_HI22, 1 },
- { R_SPARC_LO10, 1 }
- }
-};
+ allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
+ if (allocated == NULL)
+ goto error_return;
-static const struct plt_template plt_fullany_entry =
-{
- {
- 0x83414000, /* rd %pc,%g1 */
- 0x07000000, /* sethi %hi(gotN-pltN),%g3 */
- 0x05000000, /* sethi %hi(relN),%g2 */
- 0x8610E000, /* or %g3,%lo(gotN-pltN),%g3 */
- 0xC2584003, /* ldx [%g1+%g3],%g1 */
- 0x81C04000, /* jmp %g1 */
- 0x8410A000, /* or %g2,%lo(relN),%g2 */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_NONE, 0 },
- { R_SPARC_HI22, 3 },
- { R_SPARC_HI22, 4 },
- { R_SPARC_LO10, 3 },
- { R_SPARC_NONE, 0 },
- { R_SPARC_NONE, 0 },
- { R_SPARC_LO10, 4 }
- }
-};
+ if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
+ || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)
+ goto error_return;
-static const struct plt_template plt_pic_header =
-{
- {
- 0xC25DE008, /* ldx [%l7+8],%g1 */
- 0x81C04000, /* jmp %g1 */
- 0xC25DE010, /* ldx [%l7+16],%g1 */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- { }
-};
+ native_relocs = (bfd_byte *) allocated;
-static const struct plt_template plt_pic_small_entry =
-{
- {
- 0xC25DE000, /* ldx [%l7+gotN@got],%g1 */
- 0x05000000, /* sethi %hi(relN),%g2 */
- 0x81C04017, /* jmp %g1+%l7 */
- 0x8410A000, /* or %g2,%lo(relN),%g2 */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_13, 5 }, /* R_SPARC_GOT13 */
- { R_SPARC_HI22, 4 },
- { R_SPARC_NONE, 0 },
- { R_SPARC_LO10, 4 }
- }
-};
+ relents = asect->relocation + canon_reloc_count (asect);
-static const struct plt_template plt_pic_large_entry =
-{
- {
- 0x03000000, /* sethi %hi(gotN@got),%g1 */
- 0x82106000, /* or %g1,%lo(gotN@got),%g1 */
- 0xC2584017, /* ldx [%g1+%l7],%g1 */
- 0x05000000, /* sethi %hi(relN),%g2 */
- 0x81C04000, /* jmp %g1 */
- 0x8410A000, /* or %g2,%lo(relN),%g2 */
- 0x01000000, /* nop */
- 0x01000000 /* nop */
- },
- {
- { R_SPARC_HI22, 5 }, /* R_SPARC_GOT22 */
- { R_SPARC_LO10, 5 }, /* R_SPARC_GOT10 */
- { R_SPARC_NONE, 0 },
- { R_SPARC_HI22, 4 },
- { R_SPARC_NONE, 0 },
- { R_SPARC_LO10, 4 }
- }
-};
+ entsize = rel_hdr->sh_entsize;
+ BFD_ASSERT (entsize == sizeof (Elf64_External_Rela));
-/* Build a plt entry given a template and values. */
+ count = rel_hdr->sh_size / entsize;
-static boolean sparc64_elf_build_plt_entry(output_bfd, loc, tmpl, values)
- bfd *output_bfd;
- unsigned char *loc;
- const struct plt_template *tmpl;
- bfd_vma values[];
-{
- int i;
- for (i = 0; i < 8; ++i)
+ for (i = 0, relent = relents; i < count;
+ i++, relent++, native_relocs += entsize)
{
- unsigned int insn = tmpl->insns[i];
- bfd_vma value = values[tmpl->fixup[i].value];
-
-#if 1
- switch (tmpl->fixup[i].reloc)
- {
- case R_SPARC_NONE:
- break;
- case R_SPARC_HI22:
- insn |= (value >> 10) & 0x3fffff;
- break;
- case R_SPARC_LO10:
- insn |= value & 0x3ff;
- break;
- case R_SPARC_13:
- if ((bfd_signed_vma)value > 0xfff
- || (bfd_signed_vma)value < -0x1000)
- return false;
- insn |= value & 0x1fff;
- break;
- default:
- abort();
- }
-#else
- /* FIXME -- possibly use _bfd_final_link_relocate? */
-
- howto = sparc64_elf_howto_table + tmpl->fixups[i].reloc;
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- &insn, 0, value, 0);
- if (r != bfd_reloc_ok)
- return false;
-#endif
-
- bfd_put_32(output_bfd, insn, loc);
- loc += 4;
- }
+ Elf_Internal_Rela rela;
+ unsigned int r_type;
- return true;
-}
-\f
-/* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
-
-static boolean
-sparc64_elf_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
-{
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_vma *local_got_offsets;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- asection *sgot;
- asection *srelgot;
- asection *sreloc;
-
- if (info->relocateable || (sec->flags & SEC_DEBUGGING))
- return true;
-
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- local_got_offsets = elf_local_got_offsets (abfd);
-
- sgot = NULL;
- srelgot = NULL;
- sreloc = NULL;
-
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
+ bfd_elf64_swap_reloca_in (abfd, native_relocs, &rela);
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
+ /* The address of an ELF reloc is section relative for an object
+ file, and absolute for an executable file or shared library.
+ The address of a normal BFD reloc is always section relative,
+ and the address of a dynamic reloc is absolute.. */
+ if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
+ relent->address = rela.r_offset;
else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ relent->address = rela.r_offset - asect->vma;
- switch (ELF64_R_TYPE (rel->r_info))
+ if (ELF64_R_SYM (rela.r_info) == 0)
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ else
{
- case R_SPARC_GOT10:
- case R_SPARC_GOT13:
- case R_SPARC_GOT22:
- /* This symbol requires a global offset table entry. */
+ asymbol **ps, *s;
- if (dynobj == NULL)
- {
- /* Create the .got section. */
- elf_hash_table (info)->dynobj = dynobj = abfd;
- if (! _bfd_elf_create_got_section (dynobj, info))
- return false;
- }
+ ps = symbols + ELF64_R_SYM (rela.r_info) - 1;
+ s = *ps;
- if (sgot == NULL)
- {
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- }
-
- if (srelgot == NULL && (h != NULL || info->shared))
- {
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- {
- srelgot = bfd_make_section (dynobj, ".rela.got");
- if (srelgot == NULL
- || ! bfd_set_section_flags (dynobj, srelgot,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, srelgot, 3))
- return false;
- }
- }
-
- if (h != NULL)
- {
- if (h->got_offset != (bfd_vma) -1)
- {
- /* We have already allocated space in the .got. */
- break;
- }
- h->got_offset = sgot->_raw_size;
-
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
- return false;
- }
-
- srelgot->_raw_size += sizeof (Elf64_External_Rela);
- }
+ /* Canonicalize ELF section symbols. FIXME: Why? */
+ if ((s->flags & BSF_SECTION_SYM) == 0)
+ relent->sym_ptr_ptr = ps;
else
- {
- /* This is a global offset table entry for a local
- symbol. */
- if (local_got_offsets == NULL)
- {
- size_t size;
- register unsigned int i;
-
- size = symtab_hdr->sh_info * sizeof (bfd_vma);
- local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
- if (local_got_offsets == NULL)
- return false;
- elf_local_got_offsets (abfd) = local_got_offsets;
- for (i = 0; i < symtab_hdr->sh_info; i++)
- local_got_offsets[i] = (bfd_vma) -1;
- }
- if (local_got_offsets[r_symndx] != (bfd_vma) -1)
- {
- /* We have already allocated space in the .got. */
- break;
- }
- local_got_offsets[r_symndx] = sgot->_raw_size;
-
- if (info->shared)
- {
- /* If we are generating a shared object, we need to
- output a R_SPARC_RELATIVE reloc so that the
- dynamic linker can adjust this GOT entry. */
- srelgot->_raw_size += sizeof (Elf64_External_Rela);
- }
- }
-
- sgot->_raw_size += 8;
-
-#if 0
- /* Doesn't work for 64-bit -fPIC, since sethi/or builds
- unsigned numbers. If we permit ourselves to modify
- code so we get sethi/xor, this could work.
- Question: do we consider conditionally re-enabling
- this for -fpic, once we know about object code models? */
- /* If the .got section is more than 0x1000 bytes, we add
- 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
- bit relocations have a greater chance of working. */
- if (sgot->_raw_size >= 0x1000
- && elf_hash_table (info)->hgot->root.u.def.value == 0)
- elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
-#endif
-
- break;
-
- case R_SPARC_WPLT30:
- case R_SPARC_PLT32:
- case R_SPARC_HIPLT22:
- case R_SPARC_LOPLT10:
- case R_SPARC_PCPLT32:
- case R_SPARC_PCPLT22:
- case R_SPARC_PCPLT10:
- case R_SPARC_PLT64:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
-
- if (h == NULL)
- {
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
-
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
- return false;
- }
-
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- break;
-
- case R_SPARC_PC10:
- case R_SPARC_PC22:
- case R_SPARC_PC_HH22:
- case R_SPARC_PC_HM10:
- case R_SPARC_PC_LM22:
- if (h != NULL
- && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* Fall through. */
- case R_SPARC_DISP8:
- case R_SPARC_DISP16:
- case R_SPARC_DISP32:
- case R_SPARC_DISP64:
- case R_SPARC_WDISP30:
- case R_SPARC_WDISP22:
- case R_SPARC_WDISP19:
- case R_SPARC_WDISP16:
- if (h == NULL)
- break;
- /* Fall through. */
- case R_SPARC_8:
- case R_SPARC_16:
- case R_SPARC_32:
- case R_SPARC_HI22:
- case R_SPARC_22:
- case R_SPARC_13:
- case R_SPARC_LO10:
- case R_SPARC_UA32:
- case R_SPARC_10:
- case R_SPARC_11:
- case R_SPARC_64:
- case R_SPARC_OLO10:
- case R_SPARC_HH22:
- case R_SPARC_HM10:
- case R_SPARC_LM22:
- case R_SPARC_7:
- case R_SPARC_5:
- case R_SPARC_6:
- case R_SPARC_HIX22:
- case R_SPARC_LOX10:
- case R_SPARC_H44:
- case R_SPARC_M44:
- case R_SPARC_L44:
- case R_SPARC_UA64:
- case R_SPARC_UA16:
- /* When creating a shared object, we must copy these relocs
- into the output file. We create a reloc section in
- dynobj and make room for the reloc.
-
- But don't do this for debugging sections -- this shows up
- with DWARF2 -- first because they are not loaded, and
- second because DWARF sez the debug info is not to be
- biased by the load address. */
- if (info->shared && !(sec->flags & SEC_DEBUGGING))
- {
- if (sreloc == NULL)
- {
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- return false;
-
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (abfd, sec),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- if (sreloc == NULL)
- {
- flagword flags;
-
- sreloc = bfd_make_section (dynobj, name);
- flags = (SEC_HAS_CONTENTS | SEC_READONLY
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- if ((sec->flags & SEC_ALLOC) != 0)
- flags |= SEC_ALLOC | SEC_LOAD;
- if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc, flags)
- || ! bfd_set_section_alignment (dynobj, sreloc, 3))
- return false;
- }
- }
-
- sreloc->_raw_size += sizeof (Elf64_External_Rela);
- }
- break;
-
- case R_SPARC_REGISTER:
- /* Nothing to do. */
- break;
-
- default:
- (*_bfd_error_handler)("%s: check_relocs: unhandled reloc type %d",
- bfd_get_filename(abfd),
- ELF64_R_TYPE (rel->r_info));
- return false;
+ relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
}
- }
-
- return true;
-}
-/* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
+ relent->addend = rela.r_addend;
-static boolean
-sparc64_elf_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
-{
- bfd *dynobj;
- asection *s;
- unsigned int power_of_two;
-
- dynobj = elf_hash_table (info)->dynobj;
-
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
-
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later
- (although we could actually do it here). The STT_NOTYPE
- condition is a hack specifically for the Oracle libraries
- delivered for Solaris; for some inexplicable reason, they define
- some of their functions as STT_NOTYPE when they really should be
- STT_FUNC. */
- if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
- || (h->type == STT_NOTYPE
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && (h->root.u.def.section->flags & SEC_CODE) != 0))
- {
- if (! elf_hash_table (info)->dynamic_sections_created)
+ r_type = ELF64_R_TYPE_ID (rela.r_info);
+ if (r_type == R_SPARC_OLO10)
{
- /* This case can occur if we saw a WPLT30 reloc in an input
- file, but none of the input files were dynamic objects.
- In such a case, we don't actually need to build a
- procedure linkage table, and we can just do a WDISP30
- reloc instead. */
- BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
- return true;
+ relent->howto = _bfd_sparc_elf_info_to_howto_ptr (R_SPARC_LO10);
+ relent[1].address = relent->address;
+ relent++;
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ relent->addend = ELF64_R_TYPE_DATA (rela.r_info);
+ relent->howto = _bfd_sparc_elf_info_to_howto_ptr (R_SPARC_13);
}
+ else
+ relent->howto = _bfd_sparc_elf_info_to_howto_ptr (r_type);
+ }
- s = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (s != NULL);
+ canon_reloc_count (asect) += relent - relents;
- /* The first four bit in .plt is reserved. */
- if (s->_raw_size == 0)
- s->_raw_size = PLT_HEADER_SIZE;
+ if (allocated != NULL)
+ free (allocated);
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
- }
+ return TRUE;
- h->plt_offset = s->_raw_size;
-
- /* Make room for this entry. */
- s->_raw_size += PLT_ENTRY_SIZE;
+ error_return:
+ if (allocated != NULL)
+ free (allocated);
+ return FALSE;
+}
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
+/* Read in and swap the external relocs. */
- s = bfd_get_section_by_name (dynobj, ".got.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += 8;
+static bfd_boolean
+elf64_sparc_slurp_reloc_table (bfd *abfd, asection *asect,
+ asymbol **symbols, bfd_boolean dynamic)
+{
+ struct bfd_elf_section_data * const d = elf_section_data (asect);
+ Elf_Internal_Shdr *rel_hdr;
+ Elf_Internal_Shdr *rel_hdr2;
+ bfd_size_type amt;
- /* We also need to make an entry in the .rela.plt section. */
+ if (asect->relocation != NULL)
+ return TRUE;
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += sizeof (Elf64_External_Rela);
+ if (! dynamic)
+ {
+ if ((asect->flags & SEC_RELOC) == 0
+ || asect->reloc_count == 0)
+ return TRUE;
- /* The procedure linkage table size is bounded by the magnitude
- of the offset we can describe in the entry. */
- if (s->_raw_size >= (bfd_vma)1 << 32)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
+ rel_hdr = &d->rel_hdr;
+ rel_hdr2 = d->rel_hdr2;
- return true;
+ BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
+ || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
}
-
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->weakdef != NULL)
+ else
{
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->root.u.def.value;
- return true;
+ /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
+ case because relocations against this section may use the
+ dynamic symbol table, and in that case bfd_section_from_shdr
+ in elf.c does not update the RELOC_COUNT. */
+ if (asect->size == 0)
+ return TRUE;
+
+ rel_hdr = &d->this_hdr;
+ asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
+ rel_hdr2 = NULL;
}
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
-
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (info->shared)
- return true;
-
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
-
- s = bfd_get_section_by_name (dynobj, ".dynbss");
- BFD_ASSERT (s != NULL);
-
- /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
- to copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rel.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
- {
- asection *srel;
+ amt = asect->reloc_count;
+ amt *= 2 * sizeof (arelent);
+ asect->relocation = (arelent *) bfd_alloc (abfd, amt);
+ if (asect->relocation == NULL)
+ return FALSE;
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
- BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf64_External_Rela);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
- }
-
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. 16-bytes is the size
- of the largest type that requires hard alignment -- long double. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 4)
- power_of_two = 4;
-
- /* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
- {
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return false;
- }
+ /* The elf64_sparc_slurp_one_reloc_table routine increments
+ canon_reloc_count. */
+ canon_reloc_count (asect) = 0;
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
+ if (!elf64_sparc_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols,
+ dynamic))
+ return FALSE;
- /* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
+ if (rel_hdr2
+ && !elf64_sparc_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols,
+ dynamic))
+ return FALSE;
- return true;
+ return TRUE;
}
-/* Set the sizes of the dynamic sections. */
+/* Canonicalize the relocs. */
-static boolean
-sparc64_elf_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+static long
+elf64_sparc_canonicalize_reloc (bfd *abfd, sec_ptr section,
+ arelent **relptr, asymbol **symbols)
{
- bfd *dynobj;
- asection *s;
- boolean reltext;
- boolean relplt;
-
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
-
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
- {
- s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
- else
- {
- /* We may have created entries in the .rela.got section.
- However, if we are not creating the dynamic sections, we will
- not actually use these entries. Reset the size of .rela.got,
- which will cause it to get stripped from the output file
- below. */
- s = bfd_get_section_by_name (dynobj, ".rela.got");
- if (s != NULL)
- s->_raw_size = 0;
- }
-
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- reltext = false;
- relplt = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- const char *name;
- boolean strip;
+ arelent *tblptr;
+ unsigned int i;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
+ if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
+ return -1;
- /* It's OK to base decisions on the section name, because none
- of the dynobj section names depend upon the input files. */
- name = bfd_get_section_name (dynobj, s);
+ tblptr = section->relocation;
+ for (i = 0; i < canon_reloc_count (section); i++)
+ *relptr++ = tblptr++;
- strip = false;
+ *relptr = NULL;
- if (strncmp (name, ".rela", 5) == 0)
- {
- if (s->_raw_size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is to handle .rela.bss and
- .rel.plt. We must create it in
- create_dynamic_sections, because it must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- strip = true;
- }
- else
- {
- const char *outname;
- asection *target;
-
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL entry. */
- outname = bfd_get_section_name (output_bfd,
- s->output_section);
- target = bfd_get_section_by_name (output_bfd, outname + 5);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0)
- reltext = true;
-
- if (strcmp (name, ".rela.plt") == 0)
- relplt = true;
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- }
- else if (strcmp (name, ".plt") != 0
- && strncmp (name, ".got", 4) != 0)
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
+ return canon_reloc_count (section);
+}
- if (strip)
- {
- asection **spp;
- for (spp = &s->output_section->owner->sections;
- *spp != s->output_section;
- spp = &(*spp)->next)
- ;
- *spp = s->output_section->next;
- --s->output_section->owner->section_count;
+/* Canonicalize the dynamic relocation entries. Note that we return
+ the dynamic relocations as a single block, although they are
+ actually associated with particular sections; the interface, which
+ was designed for SunOS style shared libraries, expects that there
+ is only one set of dynamic relocs. Any section that was actually
+ installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
+ the dynamic symbol table, is considered to be a dynamic reloc
+ section. */
- continue;
- }
+static long
+elf64_sparc_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage,
+ asymbol **syms)
+{
+ asection *s;
+ long ret;
- /* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
- if (s->contents == NULL && s->_raw_size != 0)
- return false;
+ if (elf_dynsymtab (abfd) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
- if (elf_hash_table (info)->dynamic_sections_created)
+ ret = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
{
- /* Add some entries to the .dynamic section. We fill in the
- values later, in sparc64_elf_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
- if (! info->shared)
+ if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
+ && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
{
- if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
- return false;
+ arelent *p;
+ long count, i;
+
+ if (! elf64_sparc_slurp_reloc_table (abfd, s, syms, TRUE))
+ return -1;
+ count = canon_reloc_count (s);
+ p = s->relocation;
+ for (i = 0; i < count; i++)
+ *storage++ = p++;
+ ret += count;
}
+ }
- if (relplt)
- {
- if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
- || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_SPARC_PLTFMT,
- (info->shared != 0) + 1))
- return false;
- }
+ *storage = NULL;
- if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT,
- sizeof (Elf64_External_Rela)))
- return false;
+ return ret;
+}
- if (reltext)
- {
- if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
- return false;
- }
- }
+/* Write out the relocs. */
- /* If we are generating a shared library, we generate a section
- symbol for each output section for which we might need to copy
- relocs. These are local symbols, which means that they must come
- first in the dynamic symbol table. That means we must increment
- the dynamic symbol index of every other dynamic symbol. */
- if (info->shared)
+static void
+elf64_sparc_write_relocs (bfd *abfd, asection *sec, PTR data)
+{
+ bfd_boolean *failedp = (bfd_boolean *) data;
+ Elf_Internal_Shdr *rela_hdr;
+ bfd_vma addr_offset;
+ Elf64_External_Rela *outbound_relocas, *src_rela;
+ unsigned int idx, count;
+ asymbol *last_sym = 0;
+ int last_sym_idx = 0;
+
+ /* If we have already failed, don't do anything. */
+ if (*failedp)
+ return;
+
+ if ((sec->flags & SEC_RELOC) == 0)
+ return;
+
+ /* The linker backend writes the relocs out itself, and sets the
+ reloc_count field to zero to inhibit writing them here. Also,
+ sometimes the SEC_RELOC flag gets set even when there aren't any
+ relocs. */
+ if (sec->reloc_count == 0)
+ return;
+
+ /* We can combine two relocs that refer to the same address
+ into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the
+ latter is R_SPARC_13 with no associated symbol. */
+ count = 0;
+ for (idx = 0; idx < sec->reloc_count; idx++)
{
- int c;
-
- c = 0;
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) != 0
- || (s->flags & SEC_ALLOC) == 0)
- continue;
+ bfd_vma addr;
- elf_section_data (s)->dynindx = c + 1;
+ ++count;
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
+ addr = sec->orelocation[idx]->address;
+ if (sec->orelocation[idx]->howto->type == R_SPARC_LO10
+ && idx < sec->reloc_count - 1)
+ {
+ arelent *r = sec->orelocation[idx + 1];
- ++c;
+ if (r->howto->type == R_SPARC_13
+ && r->address == addr
+ && bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
+ && (*r->sym_ptr_ptr)->value == 0)
+ ++idx;
}
-
- elf_link_hash_traverse (elf_hash_table (info),
- sparc64_elf_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
}
- return true;
-}
+ rela_hdr = &elf_section_data (sec)->rel_hdr;
-/* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
-
-static boolean
-sparc64_elf_adjust_dynindx (h, cparg)
- struct elf_link_hash_entry *h;
- PTR cparg;
-{
- int *cp = (int *) cparg;
-
- if (h->dynindx != -1)
- h->dynindx += *cp;
- return true;
-}
-
-\f
-/* Relocate a SPARC64 ELF section. */
-
-static boolean
-sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
-{
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_vma *local_got_offsets;
- bfd_vma got_base;
- asection *sgot;
- asection *splt;
- asection *sreloc;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
-
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
- local_got_offsets = elf_local_got_offsets (input_bfd);
-
- if (elf_hash_table(info)->hgot == NULL)
- got_base = 0;
- else
- got_base = elf_hash_table (info)->hgot->root.u.def.value;
-
- sgot = splt = sreloc = NULL;
-
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
+ rela_hdr->sh_size = rela_hdr->sh_entsize * count;
+ rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
+ if (rela_hdr->contents == NULL)
{
- int r_type;
- reloc_howto_type *howto;
- long r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- asection *sec;
- bfd_vma relocation;
- bfd_reloc_status_type r;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- if (r_type < 0 || r_type >= (int) R_SPARC_max)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- howto = sparc64_elf_howto_table + r_type;
+ *failedp = TRUE;
+ return;
+ }
- r_symndx = ELF64_R_SYM (rel->r_info);
+ /* Figure out whether the relocations are RELA or REL relocations. */
+ if (rela_hdr->sh_type != SHT_RELA)
+ abort ();
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
+ /* The address of an ELF reloc is section relative for an object
+ file, and absolute for an executable file or shared library.
+ The address of a BFD reloc is always section relative. */
+ addr_offset = 0;
+ if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
+ addr_offset = sec->vma;
- continue;
- }
+ /* orelocation has the data, reloc_count has the count... */
+ outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents;
+ src_rela = outbound_relocas;
- /* This is a final link. */
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rela dst_rela;
+ arelent *ptr;
+ asymbol *sym;
+ int n;
+
+ ptr = sec->orelocation[idx];
+ sym = *ptr->sym_ptr_ptr;
+ if (sym == last_sym)
+ n = last_sym_idx;
+ else if (bfd_is_abs_section (sym->section) && sym->value == 0)
+ n = STN_UNDEF;
else
{
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- boolean skip_it = false;
- sec = h->root.u.def.section;
-
- switch (r_type)
- {
- case R_SPARC_WPLT30:
- case R_SPARC_PLT32:
- case R_SPARC_HIPLT22:
- case R_SPARC_LOPLT10:
- case R_SPARC_PCPLT32:
- case R_SPARC_PCPLT22:
- case R_SPARC_PCPLT10:
- case R_SPARC_PLT64:
- if (h->plt_offset != (bfd_vma) -1)
- skip_it = true;
- break;
-
- case R_SPARC_GOT10:
- case R_SPARC_GOT13:
- case R_SPARC_GOT22:
- if (elf_hash_table(info)->dynamic_sections_created
- && (!info->shared
- || (!info->symbolic && h->dynindx != -1)
- || !(h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR)))
- skip_it = true;
- break;
-
- case R_SPARC_PC10:
- case R_SPARC_PC22:
- case R_SPARC_PC_HH22:
- case R_SPARC_PC_HM10:
- case R_SPARC_PC_LM22:
- if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
- break;
- /* FALLTHRU */
-
- case R_SPARC_8:
- case R_SPARC_16:
- case R_SPARC_32:
- case R_SPARC_DISP8:
- case R_SPARC_DISP16:
- case R_SPARC_DISP32:
- case R_SPARC_WDISP30:
- case R_SPARC_WDISP22:
- case R_SPARC_HI22:
- case R_SPARC_22:
- case R_SPARC_13:
- case R_SPARC_LO10:
- case R_SPARC_UA32:
- case R_SPARC_10:
- case R_SPARC_11:
- case R_SPARC_64:
- case R_SPARC_OLO10:
- case R_SPARC_HH22:
- case R_SPARC_HM10:
- case R_SPARC_LM22:
- case R_SPARC_WDISP19:
- case R_SPARC_WDISP16:
- case R_SPARC_7:
- case R_SPARC_5:
- case R_SPARC_6:
- case R_SPARC_DISP64:
- case R_SPARC_HIX22:
- case R_SPARC_LOX10:
- case R_SPARC_H44:
- case R_SPARC_M44:
- case R_SPARC_L44:
- case R_SPARC_UA64:
- case R_SPARC_UA16:
- if (info->shared
- && ((!info->symbolic && h->dynindx != -1)
- || !(h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR)))
- skip_it = true;
- break;
- }
-
- if (skip_it)
- {
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- relocation = 0;
- }
- else
- {
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared && !info->symbolic)
- relocation = 0;
- else
+ last_sym = sym;
+ n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
+ if (n < 0)
{
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
- return false;
- relocation = 0;
+ *failedp = TRUE;
+ return;
}
+ last_sym_idx = n;
}
- /* When generating a shared object, these relocations are copied
- into the output file to be resolved at run time. */
- if (info->shared && !(input_section->flags & SEC_DEBUGGING))
+ if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
+ && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
+ && ! _bfd_elf_validate_reloc (abfd, ptr))
{
- switch (r_type)
- {
- case R_SPARC_PC10:
- case R_SPARC_PC22:
- case R_SPARC_PC_HH22:
- case R_SPARC_PC_HM10:
- case R_SPARC_PC_LM22:
- if (h != NULL
- && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
- break;
- /* Fall through. */
- case R_SPARC_DISP8:
- case R_SPARC_DISP16:
- case R_SPARC_DISP32:
- case R_SPARC_WDISP30:
- case R_SPARC_WDISP22:
- case R_SPARC_WDISP19:
- case R_SPARC_WDISP16:
- case R_SPARC_DISP64:
- if (h == NULL)
- break;
- /* Fall through. */
- case R_SPARC_8:
- case R_SPARC_16:
- case R_SPARC_32:
- case R_SPARC_HI22:
- case R_SPARC_22:
- case R_SPARC_13:
- case R_SPARC_LO10:
- case R_SPARC_UA32:
- case R_SPARC_10:
- case R_SPARC_11:
- case R_SPARC_64:
- case R_SPARC_OLO10:
- case R_SPARC_HH22:
- case R_SPARC_HM10:
- case R_SPARC_LM22:
- case R_SPARC_7:
- case R_SPARC_5:
- case R_SPARC_6:
- case R_SPARC_HIX22:
- case R_SPARC_LOX10:
- case R_SPARC_H44:
- case R_SPARC_M44:
- case R_SPARC_L44:
- case R_SPARC_UA64:
- case R_SPARC_UA16:
- {
- Elf_Internal_Rela outrel;
- boolean skip;
-
- if (sreloc == NULL)
- {
- const char *name =
- (bfd_elf_string_from_elf_section
- (input_bfd,
- elf_elfheader (input_bfd)->e_shstrndx,
- elf_section_data (input_section)->rel_hdr.sh_name));
-
- if (name == NULL)
- return false;
-
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name(input_bfd,
- input_section),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- BFD_ASSERT (sreloc != NULL);
- }
-
- skip = false;
-
- if (elf_section_data (input_section)->stab_info == NULL)
- outrel.r_offset = rel->r_offset;
- else
- {
- bfd_vma off;
-
- off = (_bfd_stab_section_offset
- (output_bfd, &elf_hash_table (info)->stab_info,
- input_section,
- &elf_section_data (input_section)->stab_info,
- rel->r_offset));
- if (off == MINUS_ONE)
- skip = true;
- outrel.r_offset = off;
- }
-
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
-
- /* Optimize unaligned reloc usage now that we know where
- it finally resides. */
- switch (r_type)
- {
- case R_SPARC_16:
- if (outrel.r_offset & 1) r_type = R_SPARC_UA16;
- break;
- case R_SPARC_UA16:
- if (!(outrel.r_offset & 1)) r_type = R_SPARC_16;
- break;
- case R_SPARC_32:
- if (outrel.r_offset & 3) r_type = R_SPARC_UA32;
- break;
- case R_SPARC_UA32:
- if (!(outrel.r_offset & 3)) r_type = R_SPARC_32;
- break;
- case R_SPARC_64:
- if (outrel.r_offset & 7) r_type = R_SPARC_UA64;
- break;
- case R_SPARC_UA64:
- if (!(outrel.r_offset & 7)) r_type = R_SPARC_64;
- break;
- }
-
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- /* h->dynindx may be -1 if the symbol was marked to
- become local. */
- else if (h != NULL
- && ((! info->symbolic && h->dynindx != -1)
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
- else
- {
- if (r_type == R_SPARC_64)
- {
- outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- long indx;
-
- if (h == NULL)
- sec = local_sections[r_symndx];
- else
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || (h->root.type
- == bfd_link_hash_defweak));
- sec = h->root.u.def.section;
- }
- if (sec != NULL && bfd_is_abs_section (sec))
- indx = 0;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- else
- {
- asection *osec;
-
- osec = sec->output_section;
- indx = elf_section_data (osec)->dynindx;
- BFD_ASSERT (indx > 0);
- }
-
- outrel.r_info = ELF64_R_INFO (indx, r_type);
- outrel.r_addend = relocation + rel->r_addend;
- }
- }
-
- bfd_elf64_swap_reloca_out (output_bfd, &outrel,
- (((Elf64_External_Rela *)
- sreloc->contents)
- + sreloc->reloc_count));
- ++sreloc->reloc_count;
-
- /* This reloc will be computed at runtime, so there's no
- need to do anything now, unless this is a RELATIVE
- reloc in an unallocated section. */
- if (skip
- || (input_section->flags & SEC_ALLOC) != 0
- || ELF64_R_TYPE (outrel.r_info) != R_SPARC_RELATIVE)
- continue;
- }
- break;
- }
+ *failedp = TRUE;
+ return;
}
- switch (r_type)
+ if (ptr->howto->type == R_SPARC_LO10
+ && idx < sec->reloc_count - 1)
{
- case R_SPARC_GOT10:
- case R_SPARC_GOT13:
- case R_SPARC_GOT22:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- if (sgot == NULL)
- {
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- }
+ arelent *r = sec->orelocation[idx + 1];
- if (h != NULL)
+ if (r->howto->type == R_SPARC_13
+ && r->address == ptr->address
+ && bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
+ && (*r->sym_ptr_ptr)->value == 0)
{
- bfd_vma off = h->got_offset;
- BFD_ASSERT (off != (bfd_vma) -1);
-
- if (! elf_hash_table (info)->dynamic_sections_created
- || (info->shared
- && (info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR)))
- {
- /* This is actually a static link, or it is a -Bsymbolic
- link and the symbol is defined locally, or the symbol
- was forced to be local because of a version file. We
- must initialize this entry in the global offset table.
- Since the offset must always be a multiple of 8, we
- use the least significant bit to record whether we
- have initialized it already.
-
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This is
- done in the finish_dynamic_symbol routine. */
-
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation,
- sgot->contents + off);
- h->got_offset |= 1;
- }
- }
- relocation = sgot->output_offset + off - got_base;
+ idx++;
+ dst_rela.r_info
+ = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend,
+ R_SPARC_OLO10));
}
else
- {
- bfd_vma off;
-
- BFD_ASSERT (local_got_offsets != NULL);
- off = local_got_offsets[r_symndx];
- BFD_ASSERT (off != (bfd_vma) -1);
-
- /* The offset must always be a multiple of 8. We use
- the least significant bit to record whether we have
- already processed this entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation, sgot->contents + off);
- local_got_offsets[r_symndx] |= 1;
-
- if (info->shared)
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
-
- /* We need to generate a R_SPARC_RELATIVE reloc
- for the dynamic linker. */
- srelgot = bfd_get_section_by_name(dynobj, ".rela.got");
- BFD_ASSERT (srelgot != NULL);
-
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + off);
- outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
- outrel.r_addend = relocation;
- bfd_elf64_swap_reloca_out (output_bfd, &outrel,
- (((Elf64_External_Rela *)
- srelgot->contents)
- + srelgot->reloc_count));
- ++srelgot->reloc_count;
- }
- }
- relocation = sgot->output_offset + off - got_base;
- }
- goto do_default;
-
- case R_SPARC_WPLT30:
- case R_SPARC_PLT32:
- case R_SPARC_HIPLT22:
- case R_SPARC_LOPLT10:
- case R_SPARC_PCPLT32:
- case R_SPARC_PCPLT22:
- case R_SPARC_PCPLT10:
- case R_SPARC_PLT64:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
- BFD_ASSERT (h != NULL);
-
- if (h->plt_offset == (bfd_vma) -1)
- {
- /* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
- goto do_default;
- }
-
- if (splt == NULL)
- {
- splt = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (splt != NULL);
- }
-
- relocation = (splt->output_section->vma
- + splt->output_offset
- + h->plt_offset);
- goto do_default;
-
- case R_SPARC_OLO10:
- {
- bfd_vma x;
-
- relocation += rel->r_addend;
- relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
-
- x = bfd_get_32 (input_bfd, contents + rel->r_offset);
- x = (x & ~0x1fff) | (relocation & 0x1fff);
- bfd_put_32 (input_bfd, x, contents + rel->r_offset);
-
- r = bfd_check_overflow (howto->complain_on_overflow,
- howto->bitsize, howto->rightshift,
- relocation);
- }
- break;
-
- case R_SPARC_WDISP16:
- {
- bfd_vma x;
-
- relocation += rel->r_addend;
- /* Adjust for pc-relative-ness. */
- relocation -= (input_section->output_section->vma
- + input_section->output_offset);
- relocation -= rel->r_offset;
-
- x = bfd_get_32 (input_bfd, contents + rel->r_offset);
- x = (x & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6)
- | ((relocation >> 2) & 0x3fff));
- bfd_put_32 (input_bfd, x, contents + rel->r_offset);
-
- r = bfd_check_overflow (howto->complain_on_overflow,
- howto->bitsize, howto->rightshift,
- relocation);
- }
- break;
-
- case R_SPARC_HIX22:
- {
- bfd_vma x;
-
- relocation += rel->r_addend;
- relocation = relocation ^ MINUS_ONE;
-
- x = bfd_get_32 (input_bfd, contents + rel->r_offset);
- x = (x & ~0x3fffff) | ((relocation >> 10) & 0x3fffff);
- bfd_put_32 (input_bfd, x, contents + rel->r_offset);
-
- r = bfd_check_overflow (howto->complain_on_overflow,
- howto->bitsize, howto->rightshift,
- relocation);
- }
- break;
-
- case R_SPARC_LOX10:
- {
- bfd_vma x;
-
- relocation += rel->r_addend;
- relocation = (relocation & 0x3ff) | 0x1c00;
-
- x = bfd_get_32 (input_bfd, contents + rel->r_offset);
- x = (x & ~0x1fff) | relocation;
- bfd_put_32 (input_bfd, x, contents + rel->r_offset);
-
- r = bfd_reloc_ok;
- }
- break;
-
- default:
- do_default:
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend);
- break;
+ dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10);
}
+ else
+ dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type);
- switch (r)
- {
- case bfd_reloc_ok:
- break;
+ dst_rela.r_offset = ptr->address + addr_offset;
+ dst_rela.r_addend = ptr->addend;
- default:
- case bfd_reloc_outofrange:
- abort ();
-
- case bfd_reloc_overflow:
- {
- const char *name;
-
- if (h != NULL)
- {
- if (h->root.type == bfd_link_hash_undefweak
- && howto->pc_relative)
- {
- /* Assume this is a call protected by other code that
- detect the symbol is undefined. If this is the case,
- we can safely ignore the overflow. If not, the
- program is hosed anyway, and a little warning isn't
- going to help. */
- break;
- }
-
- name = h->root.root.string;
- }
- else
- {
- name = (bfd_elf_string_from_elf_section
- (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name));
- if (name == NULL)
- return false;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- }
- break;
- }
+ bfd_elf64_swap_reloca_out (abfd, &dst_rela, (bfd_byte *) src_rela);
+ ++src_rela;
}
-
- return true;
}
-
-/* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
-
-static boolean
-sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
- bfd *output_bfd;
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
+\f
+/* Hook called by the linker routine which adds symbols from an object
+ file. We use it for STT_REGISTER symbols. */
+
+static bfd_boolean
+elf64_sparc_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
+ Elf_Internal_Sym *sym, const char **namep,
+ flagword *flagsp ATTRIBUTE_UNUSED,
+ asection **secp ATTRIBUTE_UNUSED,
+ bfd_vma *valp ATTRIBUTE_UNUSED)
{
- bfd *dynobj;
-
- dynobj = elf_hash_table (info)->dynobj;
+ static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" };
- if (h->plt_offset != (bfd_vma) -1)
+ if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER)
{
- asection *splt;
- asection *sgotplt;
- asection *srela;
- Elf_Internal_Rela rela;
- bfd_vma values[6];
- bfd_vma plt0, pltN, got0, gotN, plt_index, got_offset;
- const struct plt_template *plt_tmpl;
-
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
-
- BFD_ASSERT (h->dynindx != -1);
-
- splt = bfd_get_section_by_name (dynobj, ".plt");
- sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
- srela = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (splt != NULL && sgotplt != NULL && srela != NULL);
-
- /* Fill in the various values the plt entry might care about,
- as detailed above. */
-
- plt0 = splt->output_section->vma + splt->output_offset;
- pltN = plt0 + h->plt_offset;
- plt_index = h->plt_offset / PLT_ENTRY_SIZE - 1;
- got0 = sgotplt->output_section->vma + sgotplt->output_offset;
- got_offset = (plt_index + GOT_RESERVED_ENTRIES) * 8;
- gotN = got0 + got_offset;
-
- values[0] = got0;
- values[1] = got0 - plt0;
- values[5] = got_offset;
- values[2] = gotN;
- values[3] = gotN - pltN;
- values[4] = plt_index * sizeof(Elf64_External_Rela);
-
- /* Fill in the entry in the procedure linkage table. */
-
- if (info->shared)
- if (got_offset < 0x1000)
- plt_tmpl = &plt_pic_small_entry;
- else
- plt_tmpl = &plt_pic_large_entry;
- else
- /* FIXME -- learn how to select code models here. */
- plt_tmpl = &plt_medany_entry;
-
- sparc64_elf_build_plt_entry(output_bfd, splt->contents + h->plt_offset,
- plt_tmpl, values);
+ int reg;
+ struct _bfd_sparc_elf_app_reg *p;
- if (plt_index == 0)
+ reg = (int)sym->st_value;
+ switch (reg & ~1)
{
- /* We also need to fill in the plt header, but we only need to
- do it once. Choose to do it while we do the first plt entry. */
-
- sparc64_elf_build_plt_entry(output_bfd, splt->contents,
- (info->shared
- ? &plt_pic_header
- : &plt_medany_header),
- values);
+ case 2: reg -= 2; break;
+ case 6: reg -= 4; break;
+ default:
+ (*_bfd_error_handler)
+ (_("%B: Only registers %%g[2367] can be declared using STT_REGISTER"),
+ abfd);
+ return FALSE;
}
- /* Fill in the entry in the .got.plt section. */
-
- bfd_put_64 (output_bfd, (info->shared ? plt0-got0 : plt0),
- sgotplt->contents + got_offset);
-
- /* Fill in the entry in the .rela.plt section. */
+ if (info->hash->creator != abfd->xvec
+ || (abfd->flags & DYNAMIC) != 0)
+ {
+ /* STT_REGISTER only works when linking an elf64_sparc object.
+ If STT_REGISTER comes from a dynamic object, don't put it into
+ the output bfd. The dynamic linker will recheck it. */
+ *namep = NULL;
+ return TRUE;
+ }
- rela.r_offset = gotN;
- rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
- rela.r_addend = 0;
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) srela->contents
- + plt_index));
+ p = _bfd_sparc_elf_hash_table(info)->app_regs + reg;
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ if (p->name != NULL && strcmp (p->name, *namep))
{
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
+ (*_bfd_error_handler)
+ (_("Register %%g%d used incompatibly: %s in %B, previously %s in %B"),
+ abfd, p->abfd, (int) sym->st_value,
+ **namep ? *namep : "#scratch",
+ *p->name ? p->name : "#scratch");
+ return FALSE;
}
- }
-
- if (h->got_offset != (bfd_vma) -1)
- {
- asection *sgot;
- asection *srela;
- Elf_Internal_Rela rela;
- /* This symbol has an entry in the global offset table. Set it
- up. */
-
- sgot = bfd_get_section_by_name (dynobj, ".got");
- srela = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (sgot != NULL && srela != NULL);
-
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + (h->got_offset &~ 1));
-
- /* If this is a -Bsymbolic link, and the symbol is defined
- locally, we just want to emit a RELATIVE reloc. Likewise if
- the symbol was forced to be local because of a version file.
- The entry in the global offset table will already have been
- initialized in the relocate_section function. */
- if (info->shared
- && (info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
+ if (p->name == NULL)
{
- asection *sec = h->root.u.def.section;
- rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+ if (**namep)
+ {
+ struct elf_link_hash_entry *h;
+
+ h = (struct elf_link_hash_entry *)
+ bfd_link_hash_lookup (info->hash, *namep, FALSE, FALSE, FALSE);
+
+ if (h != NULL)
+ {
+ unsigned char type = h->type;
+
+ if (type > STT_FUNC)
+ type = 0;
+ (*_bfd_error_handler)
+ (_("Symbol `%s' has differing types: REGISTER in %B, previously %s in %B"),
+ abfd, p->abfd, *namep, stt_types[type]);
+ return FALSE;
+ }
+
+ p->name = bfd_hash_allocate (&info->hash->table,
+ strlen (*namep) + 1);
+ if (!p->name)
+ return FALSE;
+
+ strcpy (p->name, *namep);
+ }
+ else
+ p->name = "";
+ p->bind = ELF_ST_BIND (sym->st_info);
+ p->abfd = abfd;
+ p->shndx = sym->st_shndx;
}
else
{
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
- rela.r_addend = 0;
+ if (p->bind == STB_WEAK
+ && ELF_ST_BIND (sym->st_info) == STB_GLOBAL)
+ {
+ p->bind = STB_GLOBAL;
+ p->abfd = abfd;
+ }
}
-
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) srela->contents
- + srela->reloc_count));
- ++srela->reloc_count;
+ *namep = NULL;
+ return TRUE;
}
-
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ else if (*namep && **namep
+ && info->hash->creator == abfd->xvec)
{
- asection *s;
- Elf_Internal_Rela rela;
-
- /* This symbols needs a copy reloc. Set it up. */
-
- BFD_ASSERT (h->dynindx != -1);
+ int i;
+ struct _bfd_sparc_elf_app_reg *p;
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
- BFD_ASSERT (s != NULL);
-
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY);
- rela.r_addend = 0;
- bfd_elf64_swap_reloca_out (output_bfd, &rela,
- ((Elf64_External_Rela *) s->contents
- + s->reloc_count));
- ++s->reloc_count;
+ p = _bfd_sparc_elf_hash_table(info)->app_regs;
+ for (i = 0; i < 4; i++, p++)
+ if (p->name != NULL && ! strcmp (p->name, *namep))
+ {
+ unsigned char type = ELF_ST_TYPE (sym->st_info);
+
+ if (type > STT_FUNC)
+ type = 0;
+ (*_bfd_error_handler)
+ (_("Symbol `%s' has differing types: %s in %B, previously REGISTER in %B"),
+ abfd, p->abfd, *namep, stt_types[type]);
+ return FALSE;
+ }
}
-
- /* Mark some specially defined symbols as absolute. */
- if (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
- sym->st_shndx = SHN_ABS;
-
- return true;
+ return TRUE;
}
-/* Finish up the dynamic sections. */
+/* This function takes care of emitting STT_REGISTER symbols
+ which we cannot easily keep in the symbol hash table. */
-static boolean
-sparc64_elf_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+static bfd_boolean
+elf64_sparc_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info,
+ PTR finfo, bfd_boolean (*func) (PTR, const char *,
+ Elf_Internal_Sym *,
+ asection *,
+ struct elf_link_hash_entry *))
{
- bfd *dynobj;
- asection *sdyn;
- asection *sgot;
-
- dynobj = elf_hash_table (info)->dynobj;
-
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
-
- if (elf_hash_table (info)->dynamic_sections_created)
+ int reg;
+ struct _bfd_sparc_elf_app_reg *app_regs =
+ _bfd_sparc_elf_hash_table(info)->app_regs;
+ Elf_Internal_Sym sym;
+
+ /* We arranged in size_dynamic_sections to put the STT_REGISTER entries
+ at the end of the dynlocal list, so they came at the end of the local
+ symbols in the symtab. Except that they aren't STB_LOCAL, so we need
+ to back up symtab->sh_info. */
+ if (elf_hash_table (info)->dynlocal)
{
- asection *splt;
- Elf64_External_Dyn *dyncon, *dynconend;
-
- splt = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (splt != NULL && sdyn != NULL);
+ bfd * dynobj = elf_hash_table (info)->dynobj;
+ asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym");
+ struct elf_link_local_dynamic_entry *e;
- dyncon = (Elf64_External_Dyn *) sdyn->contents;
- dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
- for (; dyncon < dynconend; dyncon++)
+ for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
+ if (e->input_indx == -1)
+ break;
+ if (e)
{
- Elf_Internal_Dyn dyn;
- const char *name;
- boolean size;
-
- bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
-
- switch (dyn.d_tag)
- {
- case DT_PLTGOT: name = ".got"; size = false; break;
- case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
- case DT_JMPREL: name = ".rela.plt"; size = false; break;
- default: name = NULL; size = false; break;
- }
-
- if (name != NULL)
- {
- asection *s;
-
- s = bfd_get_section_by_name (output_bfd, name);
- if (s == NULL)
- dyn.d_un.d_val = 0;
- else
- {
- if (! size)
- dyn.d_un.d_ptr = s->vma;
- else
- {
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
- }
- }
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
+ elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
+ = e->dynindx;
}
-
- elf_section_data (splt->output_section)->this_hdr.sh_entsize =
- PLT_ENTRY_SIZE;
- }
-
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- sgot = bfd_get_section_by_name (dynobj, ".got.plt");
- BFD_ASSERT (sgot != NULL);
- if (sgot->_raw_size > 0)
- {
- if (sdyn == NULL)
- bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
- else
- bfd_put_64 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- sgot->contents);
}
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
-
- if (info->shared)
- {
- asection *sdynsym;
- asection *s;
- Elf_Internal_Sym sym;
- int c;
-
- /* Set up the section symbols for the output sections. */
-
- sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
- BFD_ASSERT (sdynsym != NULL);
+ if (info->strip == strip_all)
+ return TRUE;
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
-
- c = 0;
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx;
-
- if (elf_section_data (s)->dynindx == 0)
- continue;
+ for (reg = 0; reg < 4; reg++)
+ if (app_regs [reg].name != NULL)
+ {
+ if (info->strip == strip_some
+ && bfd_hash_lookup (info->keep_hash,
+ app_regs [reg].name,
+ FALSE, FALSE) == NULL)
+ continue;
- sym.st_value = s->vma;
+ sym.st_value = reg < 2 ? reg + 2 : reg + 4;
+ sym.st_size = 0;
+ sym.st_other = 0;
+ sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER);
+ sym.st_shndx = app_regs [reg].shndx;
+ if (! (*func) (finfo, app_regs [reg].name, &sym,
+ sym.st_shndx == SHN_ABS
+ ? bfd_abs_section_ptr : bfd_und_section_ptr,
+ NULL))
+ return FALSE;
+ }
+
+ return TRUE;
+}
- indx = elf_section_data (s)->this_idx;
- BFD_ASSERT (indx > 0);
- sym.st_shndx = indx;
+static int
+elf64_sparc_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
+{
+ if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER)
+ return STT_REGISTER;
+ else
+ return type;
+}
- bfd_elf64_swap_symbol_out (output_bfd, &sym,
- (PTR) (((Elf64_External_Sym *)
- sdynsym->contents)
- + elf_section_data (s)->dynindx));
+/* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
+ even in SHN_UNDEF section. */
- ++c;
- }
+static void
+elf64_sparc_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
+{
+ elf_symbol_type *elfsym;
- /* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info = c + 1;
+ elfsym = (elf_symbol_type *) asym;
+ if (elfsym->internal_elf_sym.st_info
+ == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER))
+ {
+ asym->flags |= BSF_GLOBAL;
}
-
- return true;
}
+
\f
-/* Functions for dealing with the e_flags field. */
+/* Functions for dealing with the e_flags field. */
/* Merge backend specific data from an object file to the output
object file when linking. */
-static boolean
-sparc64_elf_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+static bfd_boolean
+elf64_sparc_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
{
- boolean error;
+ bfd_boolean error;
flagword new_flags, old_flags;
int new_mm, old_mm;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
+ return TRUE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
if (!elf_flags_init (obfd)) /* First call, no flags set */
{
- elf_flags_init (obfd) = true;
+ elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
-
+
else if (new_flags == old_flags) /* Compatible flags are ok */
;
-
+
else /* Incompatible flags */
{
- error = false;
-
- old_flags |= (new_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1));
- new_flags |= (old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1));
- if ((old_flags & (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1)) ==
- (EF_SPARC_SUN_US1|EF_SPARC_HAL_R1))
- {
- error = true;
- (*_bfd_error_handler)
- ("%s: linking UltraSPARC specific with HAL specific code",
- bfd_get_filename (ibfd));
- }
-
- /* Choose the most restrictive memory ordering */
- old_mm = (old_flags & EF_SPARCV9_MM);
- new_mm = (new_flags & EF_SPARCV9_MM);
- old_flags &= ~EF_SPARCV9_MM;
- new_flags &= ~EF_SPARCV9_MM;
- if (new_mm < old_mm) old_mm = new_mm;
- old_flags |= old_mm;
- new_flags |= old_mm;
+ error = FALSE;
+
+#define EF_SPARC_ISA_EXTENSIONS \
+ (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
+
+ if ((ibfd->flags & DYNAMIC) != 0)
+ {
+ /* We don't want dynamic objects memory ordering and
+ architecture to have any role. That's what dynamic linker
+ should do. */
+ new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS);
+ new_flags |= (old_flags
+ & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS));
+ }
+ else
+ {
+ /* Choose the highest architecture requirements. */
+ old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS);
+ new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS);
+ if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3))
+ && (old_flags & EF_SPARC_HAL_R1))
+ {
+ error = TRUE;
+ (*_bfd_error_handler)
+ (_("%B: linking UltraSPARC specific with HAL specific code"),
+ ibfd);
+ }
+ /* Choose the most restrictive memory ordering. */
+ old_mm = (old_flags & EF_SPARCV9_MM);
+ new_mm = (new_flags & EF_SPARCV9_MM);
+ old_flags &= ~EF_SPARCV9_MM;
+ new_flags &= ~EF_SPARCV9_MM;
+ if (new_mm < old_mm)
+ old_mm = new_mm;
+ old_flags |= old_mm;
+ new_flags |= old_mm;
+ }
/* Warn about any other mismatches */
if (new_flags != old_flags)
{
- error = true;
+ error = TRUE;
(*_bfd_error_handler)
- ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
- bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
+ (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
+ ibfd, (long) new_flags, (long) old_flags);
}
elf_elfheader (obfd)->e_flags = old_flags;
if (error)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
}
- return true;
+ return TRUE;
}
+/* MARCO: Set the correct entry size for the .stab section. */
+
+static bfd_boolean
+elf64_sparc_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
+ Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
+ asection *sec)
+{
+ const char *name;
+
+ name = bfd_get_section_name (abfd, sec);
+
+ if (strcmp (name, ".stab") == 0)
+ {
+ /* Even in the 64bit case the stab entries are only 12 bytes long. */
+ elf_section_data (sec)->this_hdr.sh_entsize = 12;
+ }
+
+ return TRUE;
+}
\f
-/* Set the right machine number for a SPARC64 ELF file. */
+/* Print a STT_REGISTER symbol to file FILE. */
-static boolean
-sparc64_elf_object_p (abfd)
- bfd *abfd;
+static const char *
+elf64_sparc_print_symbol_all (bfd *abfd ATTRIBUTE_UNUSED, PTR filep,
+ asymbol *symbol)
{
- unsigned long mach = bfd_mach_sparc_v9;
-
- if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
- mach = bfd_mach_sparc_v9a;
- return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
+ FILE *file = (FILE *) filep;
+ int reg, type;
+
+ if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info)
+ != STT_REGISTER)
+ return NULL;
+
+ reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
+ type = symbol->flags;
+ fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "",
+ ((type & BSF_LOCAL)
+ ? (type & BSF_GLOBAL) ? '!' : 'l'
+ : (type & BSF_GLOBAL) ? 'g' : ' '),
+ (type & BSF_WEAK) ? 'w' : ' ');
+ if (symbol->name == NULL || symbol->name [0] == '\0')
+ return "#scratch";
+ else
+ return symbol->name;
+}
+\f
+static enum elf_reloc_type_class
+elf64_sparc_reloc_type_class (const Elf_Internal_Rela *rela)
+{
+ switch ((int) ELF64_R_TYPE (rela->r_info))
+ {
+ case R_SPARC_RELATIVE:
+ return reloc_class_relative;
+ case R_SPARC_JMP_SLOT:
+ return reloc_class_plt;
+ case R_SPARC_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
}
+/* Relocations in the 64 bit SPARC ELF ABI are more complex than in
+ standard ELF, because R_SPARC_OLO10 has secondary addend in
+ ELF64_R_TYPE_DATA field. This structure is used to redirect the
+ relocation handling routines. */
+
+const struct elf_size_info elf64_sparc_size_info =
+{
+ sizeof (Elf64_External_Ehdr),
+ sizeof (Elf64_External_Phdr),
+ sizeof (Elf64_External_Shdr),
+ sizeof (Elf64_External_Rel),
+ sizeof (Elf64_External_Rela),
+ sizeof (Elf64_External_Sym),
+ sizeof (Elf64_External_Dyn),
+ sizeof (Elf_External_Note),
+ 4, /* hash-table entry size. */
+ /* Internal relocations per external relocations.
+ For link purposes we use just 1 internal per
+ 1 external, for assembly and slurp symbol table
+ we use 2. */
+ 1,
+ 64, /* arch_size. */
+ 3, /* log_file_align. */
+ ELFCLASS64,
+ EV_CURRENT,
+ bfd_elf64_write_out_phdrs,
+ bfd_elf64_write_shdrs_and_ehdr,
+ elf64_sparc_write_relocs,
+ bfd_elf64_swap_symbol_in,
+ bfd_elf64_swap_symbol_out,
+ elf64_sparc_slurp_reloc_table,
+ bfd_elf64_slurp_symbol_table,
+ bfd_elf64_swap_dyn_in,
+ bfd_elf64_swap_dyn_out,
+ bfd_elf64_swap_reloc_in,
+ bfd_elf64_swap_reloc_out,
+ bfd_elf64_swap_reloca_in,
+ bfd_elf64_swap_reloca_out
+};
+
#define TARGET_BIG_SYM bfd_elf64_sparc_vec
#define TARGET_BIG_NAME "elf64-sparc"
#define ELF_ARCH bfd_arch_sparc
-#define ELF_MACHINE_CODE EM_SPARC64
#define ELF_MAXPAGESIZE 0x100000
-
+#define ELF_COMMONPAGESIZE 0x2000
+
+/* This is the official ABI value. */
+#define ELF_MACHINE_CODE EM_SPARCV9
+
+/* This is the value that we used before the ABI was released. */
+#define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
+
+#define elf_backend_reloc_type_class \
+ elf64_sparc_reloc_type_class
+#define bfd_elf64_get_reloc_upper_bound \
+ elf64_sparc_get_reloc_upper_bound
+#define bfd_elf64_get_dynamic_reloc_upper_bound \
+ elf64_sparc_get_dynamic_reloc_upper_bound
+#define bfd_elf64_canonicalize_reloc \
+ elf64_sparc_canonicalize_reloc
+#define bfd_elf64_canonicalize_dynamic_reloc \
+ elf64_sparc_canonicalize_dynamic_reloc
+#define elf_backend_add_symbol_hook \
+ elf64_sparc_add_symbol_hook
+#define elf_backend_get_symbol_type \
+ elf64_sparc_get_symbol_type
+#define elf_backend_symbol_processing \
+ elf64_sparc_symbol_processing
+#define elf_backend_print_symbol_all \
+ elf64_sparc_print_symbol_all
+#define elf_backend_output_arch_syms \
+ elf64_sparc_output_arch_syms
+#define bfd_elf64_bfd_merge_private_bfd_data \
+ elf64_sparc_merge_private_bfd_data
+#define elf_backend_fake_sections \
+ elf64_sparc_fake_sections
+#define elf_backend_size_info \
+ elf64_sparc_size_info
+
+#define elf_backend_plt_sym_val \
+ _bfd_sparc_elf_plt_sym_val
+#define bfd_elf64_bfd_link_hash_table_create \
+ _bfd_sparc_elf_link_hash_table_create
#define elf_info_to_howto \
- sparc64_elf_info_to_howto
+ _bfd_sparc_elf_info_to_howto
+#define elf_backend_copy_indirect_symbol \
+ _bfd_sparc_elf_copy_indirect_symbol
#define bfd_elf64_bfd_reloc_type_lookup \
- sparc64_elf_reloc_type_lookup
+ _bfd_sparc_elf_reloc_type_lookup
+#define bfd_elf64_bfd_reloc_name_lookup \
+ _bfd_sparc_elf_reloc_name_lookup
+#define bfd_elf64_bfd_relax_section \
+ _bfd_sparc_elf_relax_section
+#define bfd_elf64_new_section_hook \
+ _bfd_sparc_elf_new_section_hook
#define elf_backend_create_dynamic_sections \
- _bfd_elf_create_dynamic_sections
+ _bfd_sparc_elf_create_dynamic_sections
#define elf_backend_check_relocs \
- sparc64_elf_check_relocs
+ _bfd_sparc_elf_check_relocs
#define elf_backend_adjust_dynamic_symbol \
- sparc64_elf_adjust_dynamic_symbol
+ _bfd_sparc_elf_adjust_dynamic_symbol
+#define elf_backend_omit_section_dynsym \
+ _bfd_sparc_elf_omit_section_dynsym
#define elf_backend_size_dynamic_sections \
- sparc64_elf_size_dynamic_sections
+ _bfd_sparc_elf_size_dynamic_sections
#define elf_backend_relocate_section \
- sparc64_elf_relocate_section
+ _bfd_sparc_elf_relocate_section
#define elf_backend_finish_dynamic_symbol \
- sparc64_elf_finish_dynamic_symbol
+ _bfd_sparc_elf_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections \
- sparc64_elf_finish_dynamic_sections
-
-#define bfd_elf64_bfd_merge_private_bfd_data \
- sparc64_elf_merge_private_bfd_data
+ _bfd_sparc_elf_finish_dynamic_sections
+#define bfd_elf64_mkobject \
+ _bfd_sparc_elf_mkobject
#define elf_backend_object_p \
- sparc64_elf_object_p
-
-#define elf_backend_want_got_plt 1
-#define elf_backend_plt_readonly 1
+ _bfd_sparc_elf_object_p
+#define elf_backend_gc_mark_hook \
+ _bfd_sparc_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook \
+ _bfd_sparc_elf_gc_sweep_hook
+#define elf_backend_init_index_section \
+ _bfd_elf_init_1_index_section
+
+#define elf_backend_can_gc_sections 1
+#define elf_backend_can_refcount 1
+#define elf_backend_want_got_plt 0
+#define elf_backend_plt_readonly 0
#define elf_backend_want_plt_sym 1
-#define elf_backend_plt_alignment 5
+#define elf_backend_got_header_size 8
+#define elf_backend_rela_normal 1
+
+/* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */
+#define elf_backend_plt_alignment 8
+
+#include "elf64-target.h"
+
+/* FreeBSD support */
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM bfd_elf64_sparc_freebsd_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf64-sparc-freebsd"
+#undef ELF_OSABI
+#define ELF_OSABI ELFOSABI_FREEBSD
+
+#undef elf_backend_post_process_headers
+#define elf_backend_post_process_headers _bfd_elf_set_osabi
+#undef elf64_bed
+#define elf64_bed elf64_sparc_fbsd_bed
#include "elf64-target.h"
+
projects / deliverable / binutils-gdb.git / blobdiff