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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [cpu-avr.c] - Diff between revs 157 and 225

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/* BFD library support routines for the AVR architecture.
/* BFD library support routines for the AVR architecture.
   Copyright 1999, 2000, 2002, 2006, 2007 Free Software Foundation, Inc.
   Copyright 1999, 2000, 2002, 2005, 2006, 2007, 2008
 
   Free Software Foundation, Inc.
   Contributed by Denis Chertykov <denisc@overta.ru>
   Contributed by Denis Chertykov <denisc@overta.ru>
 
 
   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
   This program is free software; you can redistribute it and/or modify
Line 33... Line 34...
{
{
  /* If a & b are for different architectures we can do nothing.  */
  /* If a & b are for different architectures we can do nothing.  */
  if (a->arch != b->arch)
  if (a->arch != b->arch)
    return NULL;
    return NULL;
 
 
 
  if (a->mach == b->mach)
 
    return a;
 
 
 
  /* avr-6 is compatible only with itself as its call convention is not
 
     compatible with other avr (the mcu saves the return address on 3 bytes
 
     instead of 2).  */
 
  if (a->mach == bfd_mach_avr6 || b->mach == bfd_mach_avr6)
 
    return NULL;
 
 
 
  if (a->mach < bfd_mach_avr6 && b->mach < bfd_mach_avr6)
 
    {
  /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4).  */
  /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4).  */
  if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
  if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
      || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
      || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
    return NULL;
    return NULL;
 
 
  /* So far all newer AVR architecture cores are supersets of previous
 
     cores.  */
 
  if (a->mach <= b->mach)
  if (a->mach <= b->mach)
    return b;
    return b;
 
 
  if (a->mach >= b->mach)
  if (a->mach >= b->mach)
    return a;
    return a;
 
    }
 
 
 
  if (a->mach == bfd_mach_avr2 && b->mach == bfd_mach_avr25)
 
    return a;
 
  if (a->mach == bfd_mach_avr25 && b->mach == bfd_mach_avr2)
 
    return b;
 
 
 
  if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr31)
 
    return a;
 
  if (a->mach == bfd_mach_avr31 && b->mach == bfd_mach_avr3)
 
    return b;
 
 
 
  if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr35)
 
    return a;
 
  if (a->mach == bfd_mach_avr35 && b->mach == bfd_mach_avr3)
 
    return b;
 
 
 
  if (a->mach == bfd_mach_avr5 && b->mach == bfd_mach_avr51)
 
    return a;
 
  if (a->mach == bfd_mach_avr51 && b->mach == bfd_mach_avr5)
 
    return b;
 
 
 
 
  /* Never reached!  */
 
  return NULL;
  return NULL;
}
}
 
 
#define N(addr_bits, machine, print, default, next)             \
#define N(addr_bits, machine, print, default, next)             \
{                                                               \
{                                                               \
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  next                                                          \
  next                                                          \
}
}
 
 
static const bfd_arch_info_type arch_info_struct[] =
static const bfd_arch_info_type arch_info_struct[] =
{
{
  /* AT90S1200, ATtiny1x, ATtiny28.  */
  /* Assembler only.  */
  N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
  N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
 
 
  /* AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22.  */
  /* Classic, <= 8K.  */
  N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
  N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
 
 
  /* ATmega103, ATmega603.  */
  /* Classic + MOVW, <= 8K.  */
  N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[3]),
  N (16, bfd_mach_avr25, "avr:25", FALSE, & arch_info_struct[3]),
 
 
 
  /* Classic, > 8K, <= 64K.  */
 
  /* TODO:  addr_bits should be 16, but set to 22 for some following
 
     version of GCC (from 4.3) for backward compatibility.  */
 
  N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[4]),
 
 
 
  /* Classic, == 128K.  */
 
  N (22, bfd_mach_avr31, "avr:31", FALSE, & arch_info_struct[5]),
 
 
 
  /* Classic + MOVW + JMP/CALL, > 8K, <= 64K. */
 
  N (16, bfd_mach_avr35, "avr:35", FALSE, & arch_info_struct[6]),
 
 
 
  /* Enhanced, <= 8K.  */
 
  N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[7]),
 
 
  /* ATmega83, ATmega85.  */
  /* Enhanced, > 8K, <= 64K.  */
  N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[4]),
  /* TODO:  addr_bits should be 16, but set to 22 for some following
 
     version of GCC (from 4.3) for backward compatibility.  */
 
  N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[8]),
 
 
  /* ATmega161, ATmega163, ATmega32, AT94K.  */
  /* Enhanced, == 128K.  */
  N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[5]),
  N (22, bfd_mach_avr51, "avr:51", FALSE, & arch_info_struct[9]),
 
 
  /* ATmega256x.  */
  /* 3-Byte PC.  */
  N (22, bfd_mach_avr6, "avr:6", FALSE, NULL)
  N (22, bfd_mach_avr6, "avr:6", FALSE, NULL)
};
};
 
 
const bfd_arch_info_type bfd_avr_arch =
const bfd_arch_info_type bfd_avr_arch =
  N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);
  N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);

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