1  /* BFD back-end for rs6000 support
       2     Copyright (C) 1990-2023 Free Software Foundation, Inc.
       3     Written by Mimi Phuong-Thao Vo of IBM
       4     and John Gilmore of Cygnus Support.
       5  
       6     This file is part of BFD, the Binary File Descriptor library.
       7  
       8     This program is free software; you can redistribute it and/or modify
       9     it under the terms of the GNU General Public License as published by
      10     the Free Software Foundation; either version 3 of the License, or
      11     (at your option) any later version.
      12  
      13     This program is distributed in the hope that it will be useful,
      14     but WITHOUT ANY WARRANTY; without even the implied warranty of
      15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16     GNU General Public License for more details.
      17  
      18     You should have received a copy of the GNU General Public License
      19     along with this program; if not, write to the Free Software
      20     Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
      21     MA 02110-1301, USA.  */
      22  
      23  #include "sysdep.h"
      24  #include "bfd.h"
      25  #include "libbfd.h"
      26  
      27  /* The RS/6000 architecture is compatible with the PowerPC common
      28     architecture.  */
      29  
      30  static const bfd_arch_info_type *
      31  rs6000_compatible (const bfd_arch_info_type *a,
      32  		   const bfd_arch_info_type *b)
      33  {
      34    BFD_ASSERT (a->arch == bfd_arch_rs6000);
      35    switch (b->arch)
      36      {
      37      default:
      38        return NULL;
      39      case bfd_arch_rs6000:
      40        return bfd_default_compatible (a, b);
      41      case bfd_arch_powerpc:
      42        if (a->mach == bfd_mach_rs6k)
      43  	return b;
      44        return NULL;
      45      }
      46    /*NOTREACHED*/
      47  }
      48  
      49  #define N(NUMBER, PRINT, DEFAULT, NEXT)			\
      50    {							\
      51      32,        /* Bits in a word.  */			\
      52      32,        /* Bits in an address.  */		\
      53      8,	       /* Bits in a byte.  */			\
      54      bfd_arch_rs6000,					\
      55      NUMBER,						\
      56      "rs6000",						\
      57      PRINT,						\
      58      3,		/* Section alignment power.  */		\
      59      DEFAULT,						\
      60      rs6000_compatible,					\
      61      bfd_default_scan,					\
      62      bfd_arch_default_fill,				\
      63      NEXT,						\
      64      0 /* Maximum offset of a reloc from the start of an insn.  */ \
      65    }
      66  
      67  static const bfd_arch_info_type arch_info_struct[3] =
      68  {
      69    N (bfd_mach_rs6k_rs1, "rs6000:rs1", false, arch_info_struct + 1),
      70    N (bfd_mach_rs6k_rsc, "rs6000:rsc", false, arch_info_struct + 2),
      71    N (bfd_mach_rs6k_rs2, "rs6000:rs2", false, NULL)
      72  };
      73  
      74  const bfd_arch_info_type bfd_rs6000_arch =
      75    N (bfd_mach_rs6k, "rs6000:6000", true, arch_info_struct + 0);