419 lines
17 KiB
C
419 lines
17 KiB
C
/* SPARC-specific support for 64-bit ELF
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Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* We need a published ABI spec for this. Until one comes out, don't
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assume this'll remain unchanged forever. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#define SPARC64_OLD_RELOCS
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#include "elf/sparc.h"
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static reloc_howto_type *sparc64_elf_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void sparc64_elf_info_to_howto
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PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
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static boolean sparc64_elf_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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static boolean sparc64_elf_object_p PARAMS ((bfd *));
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/* The howto table and associated functions.
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??? Some of the relocation values have changed. Until we're ready
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to upgrade, we have our own copy. At some point a non upward compatible
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change will be made at which point this table can be deleted and we'll
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use the one in elf32-sparc.c. */
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static bfd_reloc_status_type sparc_elf_wdisp16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type sparc64_elf_howto_table[] =
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{
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HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
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HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
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HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
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HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
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HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
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HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
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HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true),
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HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
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HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
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HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
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HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
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HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
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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),
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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),
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HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
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HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true),
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#if 0 /* not used yet */
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HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true),
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HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
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HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
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HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
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HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
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HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
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#endif
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HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
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HOWTO(R_SPARC_64, 0,4,00,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,~ (bfd_vma) 0, true),
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HOWTO(R_SPARC_OLO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_OLO10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
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HOWTO(R_SPARC_WDISP19, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
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HOWTO(R_SPARC_GLOB_JMP, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_JMP",false,0,0x00000000,true),
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HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
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HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true),
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HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true),
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};
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struct elf_reloc_map {
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unsigned char bfd_reloc_val;
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unsigned char elf_reloc_val;
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};
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static CONST struct elf_reloc_map sparc_reloc_map[] =
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{
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{ BFD_RELOC_NONE, R_SPARC_NONE, },
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{ BFD_RELOC_16, R_SPARC_16, },
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{ BFD_RELOC_8, R_SPARC_8 },
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{ BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
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/* ??? This might cause us to need separate functions in elf{32,64}-sparc.c
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(we could still have just one table), but is this reloc ever used? */
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{ BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */
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{ BFD_RELOC_32, R_SPARC_32 },
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{ BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
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{ BFD_RELOC_HI22, R_SPARC_HI22 },
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{ BFD_RELOC_LO10, R_SPARC_LO10, },
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{ BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
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{ BFD_RELOC_SPARC22, R_SPARC_22 },
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{ BFD_RELOC_SPARC13, R_SPARC_13 },
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{ BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
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{ BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
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{ BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
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{ BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
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{ BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
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{ BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
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{ BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
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{ BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
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{ BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
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{ BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
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{ BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
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/* ??? Doesn't dwarf use this? */
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/*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
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{BFD_RELOC_SPARC_10, R_SPARC_10},
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{BFD_RELOC_SPARC_11, R_SPARC_11},
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{BFD_RELOC_SPARC_64, R_SPARC_64},
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{BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10},
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{BFD_RELOC_SPARC_HH22, R_SPARC_HH22},
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{BFD_RELOC_SPARC_HM10, R_SPARC_HM10},
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{BFD_RELOC_SPARC_LM22, R_SPARC_LM22},
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{BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22},
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{BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10},
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{BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22},
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{BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16},
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{BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19},
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{BFD_RELOC_SPARC_GLOB_JMP, R_SPARC_GLOB_JMP},
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{BFD_RELOC_SPARC_7, R_SPARC_7},
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{BFD_RELOC_SPARC_5, R_SPARC_5},
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{BFD_RELOC_SPARC_6, R_SPARC_6},
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};
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static reloc_howto_type *
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sparc64_elf_reloc_type_lookup (abfd, code)
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bfd *abfd;
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bfd_reloc_code_real_type code;
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{
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unsigned int i;
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for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
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{
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if (sparc_reloc_map[i].bfd_reloc_val == code)
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return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
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}
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return 0;
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}
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static void
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sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
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bfd *abfd;
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arelent *cache_ptr;
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Elf64_Internal_Rela *dst;
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{
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BFD_ASSERT (ELF64_R_TYPE (dst->r_info) < (unsigned int) R_SPARC_max);
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cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE (dst->r_info)];
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}
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/* Handle the WDISP16 reloc. */
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static bfd_reloc_status_type
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sparc_elf_wdisp16_reloc (abfd,
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reloc_entry,
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symbol,
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data,
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input_section,
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output_bfd,
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error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section;
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bfd *output_bfd;
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char **error_message;
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{
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bfd_vma relocation;
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bfd_vma x;
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if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (! reloc_entry->howto->partial_inplace
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|| reloc_entry->addend == 0))
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{
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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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if (output_bfd != NULL)
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return bfd_reloc_continue;
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if (reloc_entry->address > input_section->_cooked_size)
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return bfd_reloc_outofrange;
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relocation = (symbol->value
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+ symbol->section->output_section->vma
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+ symbol->section->output_offset);
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relocation += reloc_entry->addend;
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relocation -= (input_section->output_section->vma
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+ input_section->output_offset);
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relocation -= reloc_entry->address;
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x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
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x |= ((((relocation >> 2) & 0xc000) << 6)
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| ((relocation >> 2) & 0x3fff));
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bfd_put_32 (abfd, x, (char *) data + reloc_entry->address);
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if ((bfd_signed_vma) relocation < - 0x40000
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|| (bfd_signed_vma) relocation > 0x3ffff)
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return bfd_reloc_overflow;
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else
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return bfd_reloc_ok;
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}
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/* Relocate a SPARC64 ELF section. */
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static boolean
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sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
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contents, relocs, local_syms, local_sections)
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bfd *output_bfd;
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struct bfd_link_info *info;
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bfd *input_bfd;
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asection *input_section;
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bfd_byte *contents;
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Elf_Internal_Rela *relocs;
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Elf_Internal_Sym *local_syms;
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asection **local_sections;
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{
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Elf_Internal_Shdr *symtab_hdr;
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struct elf_link_hash_entry **sym_hashes;
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Elf_Internal_Rela *rel;
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Elf_Internal_Rela *relend;
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symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
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sym_hashes = elf_sym_hashes (input_bfd);
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rel = relocs;
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relend = relocs + input_section->reloc_count;
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for (; rel < relend; rel++)
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{
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int r_type;
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reloc_howto_type *howto;
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long r_symndx;
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struct elf_link_hash_entry *h;
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Elf_Internal_Sym *sym;
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asection *sec;
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bfd_vma relocation;
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bfd_reloc_status_type r;
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r_type = ELF64_R_TYPE (rel->r_info);
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if (r_type < 0 || r_type >= (int) R_SPARC_max)
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{
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bfd_set_error (bfd_error_bad_value);
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return false;
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}
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howto = sparc64_elf_howto_table + r_type;
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r_symndx = ELF64_R_SYM (rel->r_info);
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if (info->relocateable)
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{
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/* This is a relocateable link. We don't have to change
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anything, unless the reloc is against a section symbol,
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in which case we have to adjust according to where the
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section symbol winds up in the output section. */
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if (r_symndx < symtab_hdr->sh_info)
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{
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sym = local_syms + r_symndx;
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if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
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{
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sec = local_sections[r_symndx];
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rel->r_addend += sec->output_offset + sym->st_value;
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}
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}
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continue;
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}
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/* This is a final link. */
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h = NULL;
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sym = NULL;
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sec = NULL;
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if (r_symndx < symtab_hdr->sh_info)
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{
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sym = local_syms + r_symndx;
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sec = local_sections[r_symndx];
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relocation = (sec->output_section->vma
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+ sec->output_offset
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+ sym->st_value);
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}
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else
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{
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h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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while (h->root.type == bfd_link_hash_indirect
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|| h->root.type == bfd_link_hash_warning)
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h = (struct elf_link_hash_entry *) h->root.u.i.link;
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||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
sec = h->root.u.def.section;
|
||
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->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, rel->r_offset)))
|
||
return false;
|
||
relocation = 0;
|
||
}
|
||
}
|
||
|
||
if (r_type != R_SPARC_WDISP16)
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel->r_offset,
|
||
relocation, rel->r_addend);
|
||
else
|
||
{
|
||
bfd_vma x;
|
||
|
||
relocation += rel->r_addend;
|
||
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 |= ((((relocation >> 2) & 0xc000) << 6)
|
||
| ((relocation >> 2) & 0x3fff));
|
||
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
|
||
|
||
if ((bfd_signed_vma) relocation < - 0x40000
|
||
|| (bfd_signed_vma) relocation > 0x3ffff)
|
||
r = bfd_reloc_overflow;
|
||
else
|
||
r = bfd_reloc_ok;
|
||
}
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
switch (r)
|
||
{
|
||
default:
|
||
case bfd_reloc_outofrange:
|
||
abort ();
|
||
case bfd_reloc_overflow:
|
||
{
|
||
const char *name;
|
||
|
||
if (h != NULL)
|
||
name = h->root.root.string;
|
||
else
|
||
{
|
||
name = (bfd_elf_string_from_elf_section
|
||
(input_bfd,
|
||
symtab_hdr->sh_link,
|
||
sym->st_name));
|
||
if (name == NULL)
|
||
return false;
|
||
if (*name == '\0')
|
||
name = bfd_section_name (input_bfd, sec);
|
||
}
|
||
if (! ((*info->callbacks->reloc_overflow)
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset)))
|
||
return false;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Set the right machine number for a SPARC64 ELF file. */
|
||
|
||
static boolean
|
||
sparc64_elf_object_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
|
||
}
|
||
|
||
#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_info_to_howto sparc64_elf_info_to_howto
|
||
#define bfd_elf64_bfd_reloc_type_lookup sparc64_elf_reloc_type_lookup
|
||
#define elf_backend_relocate_section sparc64_elf_relocate_section
|
||
#define elf_backend_object_p sparc64_elf_object_p
|
||
|
||
#include "elf64-target.h"
|