275 lines
11 KiB
C
275 lines
11 KiB
C
/* BFD back-end for Sparc COFF files.
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Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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Written by Cygnus Support.
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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "obstack.h"
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#include "coff/sparc.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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#define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC)
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/* The page size is a guess based on ELF. */
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#define COFF_PAGE_SIZE 0x10000
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enum reloc_type
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{
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R_SPARC_NONE = 0,
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R_SPARC_8, R_SPARC_16, R_SPARC_32,
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R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
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R_SPARC_WDISP30, R_SPARC_WDISP22,
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R_SPARC_HI22, R_SPARC_22,
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R_SPARC_13, R_SPARC_LO10,
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R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
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R_SPARC_PC10, R_SPARC_PC22,
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R_SPARC_WPLT30,
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R_SPARC_COPY,
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R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
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R_SPARC_RELATIVE,
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R_SPARC_UA32,
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R_SPARC_max
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};
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#if 0
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static CONST char *CONST reloc_type_names[] =
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{
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"R_SPARC_NONE",
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"R_SPARC_8", "R_SPARC_16", "R_SPARC_32",
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"R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32",
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"R_SPARC_WDISP30", "R_SPARC_WDISP22",
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"R_SPARC_HI22", "R_SPARC_22",
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"R_SPARC_13", "R_SPARC_LO10",
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"R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22",
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"R_SPARC_PC10", "R_SPARC_PC22",
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"R_SPARC_WPLT30",
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"R_SPARC_COPY",
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"R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
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"R_SPARC_RELATIVE",
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"R_SPARC_UA32",
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};
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#endif
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/* This is stolen pretty directly from elf.c. */
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static bfd_reloc_status_type
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bfd_coff_generic_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR,
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asection *, bfd *, char **));
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static bfd_reloc_status_type
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bfd_coff_generic_reloc (abfd, reloc_entry, symbol, data, input_section,
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output_bfd, 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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if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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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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return bfd_reloc_continue;
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}
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static reloc_howto_type coff_sparc_howto_table[] =
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{
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HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_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_coff_generic_reloc,"R_SPARC_LO10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13", false,0,0x00001fff,true),
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HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_PC10, 0,2,10,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10", false,0,0x000003ff,true),
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HOWTO(R_SPARC_PC22, 0,2,22,false,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22", false,0,0x003fffff,true),
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HOWTO(R_SPARC_WPLT30, 0,0,00,false,0,complain_overflow_dont, bfd_coff_generic_reloc,"R_SPARC_WPLT30", false,0,0x00000000,true),
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HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_coff_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_coff_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_coff_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_coff_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_coff_generic_reloc,"R_SPARC_UA32", false,0,0x00000000,true),
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};
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struct coff_reloc_map {
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unsigned char bfd_reloc_val;
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unsigned char coff_reloc_val;
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};
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static CONST struct coff_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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{ 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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/* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
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};
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static CONST struct reloc_howto_struct *
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coff_sparc_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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int i;
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for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_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 &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val];
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}
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return 0;
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}
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#define coff_bfd_reloc_type_lookup coff_sparc_reloc_type_lookup
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static void
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rtype2howto (cache_ptr, dst)
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arelent *cache_ptr;
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struct internal_reloc *dst;
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{
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BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max);
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cache_ptr->howto = &coff_sparc_howto_table[dst->r_type];
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}
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#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
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#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
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#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
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/* This is just like the standard one, except for the addition of the
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last line, the adjustment of the addend. */
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#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
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{ \
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coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
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if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
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coffsym = (obj_symbols (abfd) \
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+ (cache_ptr->sym_ptr_ptr - symbols)); \
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else if (ptr) \
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coffsym = coff_symbol_from (abfd, ptr); \
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if (coffsym != (coff_symbol_type *) NULL \
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&& coffsym->native->u.syment.n_scnum == 0) \
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cache_ptr->addend = 0; \
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else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
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&& ptr->section != (asection *) NULL) \
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cache_ptr->addend = - (ptr->section->vma + ptr->value); \
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else \
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cache_ptr->addend = 0; \
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cache_ptr->addend += reloc.r_offset; \
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}
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/* Clear the r_spare field in relocs. */
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#define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \
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do { \
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dst->r_spare[0] = 0; \
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dst->r_spare[1] = 0; \
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} while (0)
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#define __A_MAGIC_SET__
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/* Enable Sparc-specific hacks in coffcode.h. */
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#define COFF_SPARC
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#include "coffcode.h"
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bfd_target
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#ifdef TARGET_SYM
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TARGET_SYM =
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#else
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sparccoff_vec =
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#endif
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{
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#ifdef TARGET_NAME
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TARGET_NAME,
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#else
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"coff-sparc", /* name */
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#endif
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bfd_target_coff_flavour,
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true, /* data byte order is big */
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true, /* header byte order is big */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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0, /* leading underscore */
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'/', /* ar_pad_char */
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15, /* ar_max_namelen */
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2, /* minimum alignment power */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
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/* Note that we allow an object file to be treated as a core file as well. */
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{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
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bfd_generic_archive_p, coff_object_p},
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{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
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bfd_false},
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{bfd_false, coff_write_object_contents, /* bfd_write_contents */
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_bfd_write_archive_contents, bfd_false},
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BFD_JUMP_TABLE_GENERIC (coff),
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BFD_JUMP_TABLE_COPY (coff),
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BFD_JUMP_TABLE_CORE (_bfd_nocore),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
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BFD_JUMP_TABLE_SYMBOLS (coff),
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BFD_JUMP_TABLE_RELOCS (coff),
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BFD_JUMP_TABLE_WRITE (coff),
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BFD_JUMP_TABLE_LINK (coff),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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COFF_SWAP_TABLE,
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};
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