1 /* Memory attributes support, for GDB.
3 Copyright (C) 2001-2018 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 MEM_NONE
, /* Memory that is not physically present. */
26 MEM_RW
, /* read/write */
27 MEM_RO
, /* read only */
28 MEM_WO
, /* write only */
30 /* Read/write, but special steps are required to write to it. */
36 MEM_WIDTH_UNSPECIFIED
,
37 MEM_WIDTH_8
, /* 8 bit accesses */
38 MEM_WIDTH_16
, /* 16 " " */
39 MEM_WIDTH_32
, /* 32 " " */
40 MEM_WIDTH_64
/* 64 " " */
43 /* The set of all attributes that can be set for a memory region.
45 This structure was created so that memory attributes can be passed
46 to target_ functions without exposing the details of memory region
47 list, which would be necessary if these fields were simply added to
48 the mem_region structure.
50 FIXME: It would be useful if there was a mechanism for targets to
51 add their own attributes. For example, the number of wait states. */
55 static mem_attrib
unknown ()
59 attrib
.mode
= MEM_NONE
;
64 /* read/write, read-only, or write-only */
65 enum mem_access_mode mode
= MEM_RW
;
67 enum mem_access_width width
= MEM_WIDTH_UNSPECIFIED
;
69 /* enables hardware breakpoints */
72 /* enables host-side caching of memory region data */
75 /* Enables memory verification. After a write, memory is re-read
76 to verify that the write was successful. */
79 /* Block size. Only valid if mode == MEM_FLASH. */
85 /* Create a mem_region with default attributes. */
87 mem_region (CORE_ADDR lo_
, CORE_ADDR hi_
)
91 /* Create a mem_region with access mode MODE_, but otherwise default
94 mem_region (CORE_ADDR lo_
, CORE_ADDR hi_
, mem_access_mode mode_
)
100 /* Create a mem_region with attributes ATTRIB_. */
102 mem_region (CORE_ADDR lo_
, CORE_ADDR hi_
, const mem_attrib
&attrib_
)
103 : lo (lo_
), hi (hi_
), attrib (attrib_
)
106 bool operator< (const mem_region
&other
) const
108 return this->lo
< other
.lo
;
111 /* Lowest address in the region. */
113 /* Address past the highest address of the region.
114 If 0, upper bound is "infinity". */
117 /* Item number of this memory region. */
120 /* Status of this memory region (enabled if true, otherwise
122 bool enabled_p
= true;
124 /* Attributes for this region. */
128 extern struct mem_region
*lookup_mem_region (CORE_ADDR
);
130 void invalidate_target_mem_regions (void);
132 #endif /* MEMATTR_H */
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