OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [cpu-avr.c] - Blame information for rev 298

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 24 jeremybenn
/* BFD library support routines for the AVR architecture.
2 225 jeremybenn
   Copyright 1999, 2000, 2002, 2005, 2006, 2007, 2008
3
   Free Software Foundation, Inc.
4 24 jeremybenn
   Contributed by Denis Chertykov <denisc@overta.ru>
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
/* This routine is provided two arch_infos and works out which AVR
28
   machine which would be compatible with both and returns a pointer
29
   to its info structure.  */
30
 
31
static const bfd_arch_info_type *
32
compatible (const bfd_arch_info_type * a,
33
            const bfd_arch_info_type * b)
34
{
35
  /* If a & b are for different architectures we can do nothing.  */
36
  if (a->arch != b->arch)
37
    return NULL;
38
 
39 225 jeremybenn
  if (a->mach == b->mach)
40
    return a;
41
 
42
  /* avr-6 is compatible only with itself as its call convention is not
43
     compatible with other avr (the mcu saves the return address on 3 bytes
44
     instead of 2).  */
45
  if (a->mach == bfd_mach_avr6 || b->mach == bfd_mach_avr6)
46 24 jeremybenn
    return NULL;
47
 
48 225 jeremybenn
  if (a->mach < bfd_mach_avr6 && b->mach < bfd_mach_avr6)
49
    {
50
      /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4).  */
51
      if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
52
         || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
53
       return NULL;
54
 
55
      if (a->mach <= b->mach)
56
       return b;
57
 
58
      if (a->mach >= b->mach)
59
       return a;
60
    }
61
 
62
  if (a->mach == bfd_mach_avr2 && b->mach == bfd_mach_avr25)
63
    return a;
64
  if (a->mach == bfd_mach_avr25 && b->mach == bfd_mach_avr2)
65 24 jeremybenn
    return b;
66 225 jeremybenn
 
67
  if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr31)
68
    return a;
69
  if (a->mach == bfd_mach_avr31 && b->mach == bfd_mach_avr3)
70
    return b;
71 24 jeremybenn
 
72 225 jeremybenn
  if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr35)
73 24 jeremybenn
    return a;
74 225 jeremybenn
  if (a->mach == bfd_mach_avr35 && b->mach == bfd_mach_avr3)
75
    return b;
76 24 jeremybenn
 
77 225 jeremybenn
  if (a->mach == bfd_mach_avr5 && b->mach == bfd_mach_avr51)
78
    return a;
79
  if (a->mach == bfd_mach_avr51 && b->mach == bfd_mach_avr5)
80
    return b;
81
 
82
 
83 24 jeremybenn
  return NULL;
84
}
85
 
86
#define N(addr_bits, machine, print, default, next)             \
87
{                                                               \
88
  8,                            /* 8 bits in a word.  */        \
89
  addr_bits,                    /* bits in an address.  */      \
90
  8,                            /* 8 bits in a byte.  */        \
91
  bfd_arch_avr,                                                 \
92
  machine,                      /* Machine number.  */          \
93
  "avr",                        /* Architecture name.   */      \
94
  print,                        /* Printable name.  */          \
95
  1,                            /* Section align power.  */     \
96
  default,                      /* Is this the default ?  */    \
97
  compatible,                                                   \
98
  bfd_default_scan,                                             \
99
  next                                                          \
100
}
101
 
102
static const bfd_arch_info_type arch_info_struct[] =
103
{
104 225 jeremybenn
  /* Assembler only.  */
105 24 jeremybenn
  N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
106
 
107 225 jeremybenn
  /* Classic, <= 8K.  */
108 24 jeremybenn
  N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
109
 
110 225 jeremybenn
  /* Classic + MOVW, <= 8K.  */
111
  N (16, bfd_mach_avr25, "avr:25", FALSE, & arch_info_struct[3]),
112 24 jeremybenn
 
113 225 jeremybenn
  /* Classic, > 8K, <= 64K.  */
114
  /* TODO:  addr_bits should be 16, but set to 22 for some following
115
     version of GCC (from 4.3) for backward compatibility.  */
116
  N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[4]),
117 24 jeremybenn
 
118 225 jeremybenn
  /* Classic, == 128K.  */
119
  N (22, bfd_mach_avr31, "avr:31", FALSE, & arch_info_struct[5]),
120 24 jeremybenn
 
121 225 jeremybenn
  /* Classic + MOVW + JMP/CALL, > 8K, <= 64K. */
122
  N (16, bfd_mach_avr35, "avr:35", FALSE, & arch_info_struct[6]),
123
 
124
  /* Enhanced, <= 8K.  */
125
  N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[7]),
126
 
127
  /* Enhanced, > 8K, <= 64K.  */
128
  /* TODO:  addr_bits should be 16, but set to 22 for some following
129
     version of GCC (from 4.3) for backward compatibility.  */
130
  N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[8]),
131
 
132
  /* Enhanced, == 128K.  */
133
  N (22, bfd_mach_avr51, "avr:51", FALSE, & arch_info_struct[9]),
134
 
135
  /* 3-Byte PC.  */
136 24 jeremybenn
  N (22, bfd_mach_avr6, "avr:6", FALSE, NULL)
137
};
138
 
139
const bfd_arch_info_type bfd_avr_arch =
140
  N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.