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80629b1b | 1 | /* Memory attributes support, for GDB. |
c96fc75e DJ |
2 | |
3 | Copyright (C) 2001, 2006 Free Software Foundation, Inc. | |
80629b1b EZ |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
80629b1b | 21 | |
29e57380 C |
22 | #ifndef MEMATTR_H |
23 | #define MEMATTR_H | |
24 | ||
c96fc75e DJ |
25 | #include "vec.h" |
26 | ||
29e57380 C |
27 | enum mem_access_mode |
28 | { | |
29 | MEM_RW, /* read/write */ | |
30 | MEM_RO, /* read only */ | |
fd79ecee DJ |
31 | MEM_WO, /* write only */ |
32 | ||
33 | /* Read/write, but special steps are required to write to it. */ | |
34 | MEM_FLASH | |
29e57380 C |
35 | }; |
36 | ||
37 | enum mem_access_width | |
38 | { | |
39 | MEM_WIDTH_UNSPECIFIED, | |
40 | MEM_WIDTH_8, /* 8 bit accesses */ | |
41 | MEM_WIDTH_16, /* 16 " " */ | |
42 | MEM_WIDTH_32, /* 32 " " */ | |
43 | MEM_WIDTH_64 /* 64 " " */ | |
44 | }; | |
45 | ||
46 | /* The set of all attributes that can be set for a memory region. | |
47 | ||
48 | This structure was created so that memory attributes can be passed | |
49 | to target_ functions without exposing the details of memory region | |
50 | list, which would be necessary if these fields were simply added to | |
51 | the mem_region structure. | |
52 | ||
53 | FIXME: It would be useful if there was a mechanism for targets to | |
54 | add their own attributes. For example, the number of wait states. */ | |
55 | ||
56 | struct mem_attrib | |
57 | { | |
58 | /* read/write, read-only, or write-only */ | |
59 | enum mem_access_mode mode; | |
60 | ||
61 | enum mem_access_width width; | |
62 | ||
63 | /* enables hardware breakpoints */ | |
64 | int hwbreak; | |
65 | ||
66 | /* enables host-side caching of memory region data */ | |
67 | int cache; | |
68 | ||
69 | /* enables memory verification. after a write, memory is re-read | |
70 | to verify that the write was successful. */ | |
71 | int verify; | |
fd79ecee DJ |
72 | |
73 | /* Block size. Only valid if mode == MEM_FLASH. */ | |
74 | int blocksize; | |
29e57380 C |
75 | }; |
76 | ||
77 | struct mem_region | |
78 | { | |
29e57380 C |
79 | CORE_ADDR lo; |
80 | CORE_ADDR hi; | |
81 | ||
82 | /* Item number of this memory region. */ | |
83 | int number; | |
84 | ||
b5de0fa7 EZ |
85 | /* Status of this memory region (enabled if non-zero, otherwise disabled) */ |
86 | int enabled_p; | |
29e57380 C |
87 | |
88 | /* Attributes for this region */ | |
89 | struct mem_attrib attrib; | |
90 | }; | |
91 | ||
c96fc75e DJ |
92 | /* Declare a vector type for a group of mem_region structures. The |
93 | typedef is necessary because vec.h can not handle a struct tag. | |
94 | Except during construction, these vectors are kept sorted. */ | |
95 | typedef struct mem_region mem_region_s; | |
96 | DEF_VEC_O(mem_region_s); | |
97 | ||
29e57380 C |
98 | extern struct mem_region *lookup_mem_region(CORE_ADDR); |
99 | ||
fd79ecee DJ |
100 | void invalidate_target_mem_regions (void); |
101 | ||
102 | void mem_region_init (struct mem_region *); | |
103 | ||
104 | int mem_region_cmp (const void *, const void *); | |
105 | ||
29e57380 | 106 | #endif /* MEMATTR_H */ |