1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/* BFD library support routines for the AVR architecture.
Copyright (C) 1999-2022 Free Software Foundation, Inc.
Contributed by Denis Chertykov <denisc@overta.ru>
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"
/* This routine is provided two arch_infos and works out which AVR
machine which would be compatible with both and returns a pointer
to its info structure. */
static const bfd_arch_info_type *
compatible (const bfd_arch_info_type * a,
const bfd_arch_info_type * b)
{
/* If a & b are for different architectures we can do nothing. */
if (a->arch != b->arch)
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). */
if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
|| (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
return NULL;
if (a->mach <= b->mach)
return b;
if (a->mach >= b->mach)
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;
return NULL;
}
#define N(addr_bits, machine, print, default, next) \
{ \
8, /* Bits in a word. */ \
addr_bits, /* Bits in an address. */ \
8, /* Bits in a byte. */ \
bfd_arch_avr, \
machine, /* Machine number. */ \
"avr", /* Architecture name. */ \
print, /* Printable name. */ \
1, /* Section align power. */ \
default, /* Is this the default ? */ \
compatible, \
bfd_default_scan, \
bfd_arch_default_fill, \
next, \
0 /* Maximum offset of a reloc from the start of an insn. */ \
}
static const bfd_arch_info_type arch_info_struct[] =
{
/* Assembler only. */
N (16, bfd_mach_avr1, "avr:1", false, & arch_info_struct[1]),
/* Classic, <= 8K. */
N (16, bfd_mach_avr2, "avr:2", false, & arch_info_struct[2]),
/* Classic + MOVW, <= 8K. */
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]),
/* Enhanced, > 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_avr5, "avr:5", false, & arch_info_struct[8]),
/* Enhanced, == 128K. */
N (22, bfd_mach_avr51, "avr:51", false, & arch_info_struct[9]),
/* 3-Byte PC. */
N (22, bfd_mach_avr6, "avr:6", false, & arch_info_struct[10]),
/* Tiny core (AVR Tiny). */
N (16, bfd_mach_avrtiny, "avr:100", false, & arch_info_struct[11]),
/* Xmega 1. */
N (24, bfd_mach_avrxmega1, "avr:101", false, & arch_info_struct[12]),
/* Xmega 2. */
N (24, bfd_mach_avrxmega2, "avr:102", false, & arch_info_struct[13]),
/* Xmega 3. */
N (24, bfd_mach_avrxmega3, "avr:103", false, & arch_info_struct[14]),
/* Xmega 4. */
N (24, bfd_mach_avrxmega4, "avr:104", false, & arch_info_struct[15]),
/* Xmega 5. */
N (24, bfd_mach_avrxmega5, "avr:105", false, & arch_info_struct[16]),
/* Xmega 6. */
N (24, bfd_mach_avrxmega6, "avr:106", false, & arch_info_struct[17]),
/* Xmega 7. */
N (24, bfd_mach_avrxmega7, "avr:107", false, NULL)
};
const bfd_arch_info_type bfd_avr_arch =
N (16, bfd_mach_avr2, "avr", true, & arch_info_struct[0]);
|
