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
|
/* Definitions of types that are used to store AVR architecture and
device information.
Copyright (C) 2012-2013 Free Software Foundation, Inc.
Contributed by Georg-Johann Lay (avr@gjlay.de)
This file is part of GCC.
GCC 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, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* This enum supplies indices into the avr_arch_types[] table below. */
enum avr_arch
{
ARCH_UNKNOWN,
ARCH_AVR1,
ARCH_AVR2,
ARCH_AVR25,
ARCH_AVR3,
ARCH_AVR31,
ARCH_AVR35,
ARCH_AVR4,
ARCH_AVR5,
ARCH_AVR51,
ARCH_AVR6,
ARCH_AVRXMEGA2,
ARCH_AVRXMEGA4,
ARCH_AVRXMEGA5,
ARCH_AVRXMEGA6,
ARCH_AVRXMEGA7
};
/* Architecture-specific properties. */
struct base_arch_s
{
/* Assembler only. */
int asm_only;
/* Core have 'MUL*' instructions. */
int have_mul;
/* Core have 'CALL' and 'JMP' instructions. */
int have_jmp_call;
/* Core have 'MOVW' and 'LPM Rx,Z' instructions. */
int have_movw_lpmx;
/* Core have 'ELPM' instructions. */
int have_elpm;
/* Core have 'ELPM Rx,Z' instructions. */
int have_elpmx;
/* Core have 'EICALL' and 'EIJMP' instructions. */
int have_eijmp_eicall;
/* This is an XMEGA core. */
int xmega_p;
/* This core has the RAMPD special function register
and thus also the RAMPX, RAMPY and RAMPZ registers. */
int have_rampd;
/* Default start of data section address for architecture. */
int default_data_section_start;
/* Offset between SFR address and RAM address:
SFR-address = RAM-address - sfr_offset */
int sfr_offset;
/* Architecture id to built-in define __AVR_ARCH__ (NULL -> no macro) */
const char *const macro;
/* Architecture name. */
const char *const arch_name;
};
/* Device-specific properties. */
struct mcu_type_s
{
/* Device name. */
const char *const name;
/* Index in avr_arch_types[]. */
enum avr_arch arch;
/* Must lie outside user's namespace. NULL == no macro. */
const char *const macro;
/* Stack pointer have 8 bits width. */
int short_sp;
/* Some AVR devices have a core erratum when skipping a 2-word instruction.
Skip instructions are: SBRC, SBRS, SBIC, SBIS, CPSE.
Problems will occur with return address is IRQ executes during the
skip sequence.
A support ticket from Atmel returned the following information:
Subject: (ATTicket:644469) On AVR skip-bug core Erratum
From: avr@atmel.com Date: 2011-07-27
(Please keep the subject when replying to this mail)
This errata exists only in AT90S8515 and ATmega103 devices.
For information please refer the following respective errata links
http://www.atmel.com/dyn/resources/prod_documents/doc2494.pdf
http://www.atmel.com/dyn/resources/prod_documents/doc1436.pdf */
/* Core Erratum: Must not skip 2-word instruction. */
int errata_skip;
/* Start of data section. */
int data_section_start;
/* Number of 64k segments in the flash. */
int n_flash;
/* Name of device library. */
const char *const library_name;
};
/* Map architecture to its texinfo string. */
struct arch_info_s
{
/* Architecture ID. */
enum avr_arch arch;
/* textinfo source to describe the archtiecture. */
const char *texinfo;
};
/* Preprocessor macros to define depending on MCU type. */
extern const struct base_arch_s *avr_current_arch;
extern const struct mcu_type_s *avr_current_device;
extern const struct mcu_type_s avr_mcu_types[];
extern const struct base_arch_s avr_arch_types[];
|
