text: /* BFD back-end for Sparc COFF files.
     Copyright (C) 1990-2017 Free Software Foundation, Inc.
     Written by Cygnus Support.
  
     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 3 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.
  
     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 "sysdep.h"
  #include "bfd.h"
  #include "libbfd.h"
  #include "coff/sparc.h"
  #include "coff/internal.h"
  #include "libcoff.h"
  
  #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
  
  #define BADMAG(x) ((x).f_magic != SPARCMAGIC && (x).f_magic != LYNXCOFFMAGIC)
  
  /* The page size is a guess based on ELF.  */
  #define COFF_PAGE_SIZE 0x10000
  
  enum reloc_type
    {
      R_SPARC_NONE = 0,
      R_SPARC_8,		R_SPARC_16,		R_SPARC_32,
      R_SPARC_DISP8,	R_SPARC_DISP16,		R_SPARC_DISP32,
      R_SPARC_WDISP30,	R_SPARC_WDISP22,
      R_SPARC_HI22,	R_SPARC_22,
      R_SPARC_13,		R_SPARC_LO10,
      R_SPARC_GOT10,	R_SPARC_GOT13,		R_SPARC_GOT22,
      R_SPARC_PC10,	R_SPARC_PC22,
      R_SPARC_WPLT30,
      R_SPARC_COPY,
      R_SPARC_GLOB_DAT,	R_SPARC_JMP_SLOT,
      R_SPARC_RELATIVE,
      R_SPARC_UA32,
      R_SPARC_max
    };
  
  /* This is stolen pretty directly from elf.c.  */
  
  static bfd_reloc_status_type
  bfd_coff_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED,
  			arelent *reloc_entry,
  			asymbol *symbol,
  			void * data ATTRIBUTE_UNUSED,
  			asection *input_section,
  			bfd *output_bfd,
  			char **error_message ATTRIBUTE_UNUSED)
  {
    if (output_bfd != (bfd *) NULL
        && (symbol->flags & BSF_SECTION_SYM) == 0)
      {
        reloc_entry->address += input_section->output_offset;
        return bfd_reloc_ok;
      }
  
    return bfd_reloc_continue;
  }
  
  static reloc_howto_type coff_sparc_howto_table[] =
  {
    HOWTO(R_SPARC_NONE,    0,3, 0,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_NONE",    FALSE,0,0x00000000,TRUE),
    HOWTO(R_SPARC_8,       0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_8",       FALSE,0,0x000000ff,TRUE),
    HOWTO(R_SPARC_16,      0,1,16,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_16",      FALSE,0,0x0000ffff,TRUE),
    HOWTO(R_SPARC_32,      0,2,32,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_32",      FALSE,0,0xffffffff,TRUE),
    HOWTO(R_SPARC_DISP8,   0,0, 8,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_DISP8",   FALSE,0,0x000000ff,TRUE),
    HOWTO(R_SPARC_DISP16,  0,1,16,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_DISP16",  FALSE,0,0x0000ffff,TRUE),
    HOWTO(R_SPARC_DISP32,  0,2,32,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_DISP32",  FALSE,0,0x00ffffff,TRUE),
    HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
    HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed,  bfd_coff_generic_reloc,"R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
    HOWTO(R_SPARC_HI22,   10,2,22,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_HI22",    FALSE,0,0x003fffff,TRUE),
    HOWTO(R_SPARC_22,      0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_22",      FALSE,0,0x003fffff,TRUE),
    HOWTO(R_SPARC_13,      0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_13",      FALSE,0,0x00001fff,TRUE),
    HOWTO(R_SPARC_LO10,    0,2,10,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_LO10",    FALSE,0,0x000003ff,TRUE),
    HOWTO(R_SPARC_GOT10,   0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT10",   FALSE,0,0x000003ff,TRUE),
    HOWTO(R_SPARC_GOT13,   0,2,13,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT13",   FALSE,0,0x00001fff,TRUE),
    HOWTO(R_SPARC_GOT22,  10,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_GOT22",   FALSE,0,0x003fffff,TRUE),
    HOWTO(R_SPARC_PC10,    0,2,10,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC10",    FALSE,0,0x000003ff,TRUE),
    HOWTO(R_SPARC_PC22,    0,2,22,FALSE,0,complain_overflow_bitfield,bfd_coff_generic_reloc,"R_SPARC_PC22",    FALSE,0,0x003fffff,TRUE),
    HOWTO(R_SPARC_WPLT30,  0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_WPLT30",  FALSE,0,0x00000000,TRUE),
    HOWTO(R_SPARC_COPY,    0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_COPY",    FALSE,0,0x00000000,TRUE),
    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),
    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),
    HOWTO(R_SPARC_RELATIVE,0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
    HOWTO(R_SPARC_UA32,    0,0,00,FALSE,0,complain_overflow_dont,    bfd_coff_generic_reloc,"R_SPARC_UA32",    FALSE,0,0x00000000,TRUE),
  };
  
  struct coff_reloc_map
  {
    bfd_reloc_code_real_type bfd_reloc_val;
    unsigned char coff_reloc_val;
  };
  
  static const struct coff_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_32 }, /* @@ Assumes 32 bits.  */
    { 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 },
    /*  { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
  };
  
  static reloc_howto_type *
  coff_sparc_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
  			      bfd_reloc_code_real_type code)
  {
    unsigned int i;
    for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct coff_reloc_map); i++)
      {
        if (sparc_reloc_map[i].bfd_reloc_val == code)
  	return &coff_sparc_howto_table[(int) sparc_reloc_map[i].coff_reloc_val];
      }
    return 0;
  }
  #define coff_bfd_reloc_type_lookup	coff_sparc_reloc_type_lookup
  
  static reloc_howto_type *
  coff_sparc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
  			      const char *r_name)
  {
    unsigned int i;
  
    for (i = 0;
         i < (sizeof (coff_sparc_howto_table)
  	    / sizeof (coff_sparc_howto_table[0]));
         i++)
      if (coff_sparc_howto_table[i].name != NULL
  	&& strcasecmp (coff_sparc_howto_table[i].name, r_name) == 0)
        return &coff_sparc_howto_table[i];
  
    return NULL;
  }
  #define coff_bfd_reloc_name_lookup coff_sparc_reloc_name_lookup
  
  static void
  rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
  {
    BFD_ASSERT (dst->r_type < (unsigned int) R_SPARC_max);
    cache_ptr->howto = &coff_sparc_howto_table[dst->r_type];
  }
  
  #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
  
  #define SWAP_IN_RELOC_OFFSET	H_GET_32
  #define SWAP_OUT_RELOC_OFFSET	H_PUT_32
  #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
    cache_ptr->addend = reloc.r_offset;
  
  /* Clear the r_spare field in relocs.  */
  #define SWAP_OUT_RELOC_EXTRA(abfd,src,dst) \
    do { \
         dst->r_spare[0] = 0; \
         dst->r_spare[1] = 0; \
       } while (0)
  
  #define __A_MAGIC_SET__
  
  /* Enable Sparc-specific hacks in coffcode.h.  */
  
  #define COFF_SPARC
  
  #define bfd_pe_print_pdata	NULL
  
  #include "coffcode.h"
  
  #ifndef TARGET_SYM
  #define TARGET_SYM sparc_coff_vec
  #endif
  
  #ifndef TARGET_NAME
  #define TARGET_NAME "coff-sparc"
  #endif
  
  CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, D_PAGED, 0, '_', NULL, COFF_SWAP_TABLE)
  