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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 | { | |
4b5752d0 | 29 | MEM_NONE, /* Memory that is not physically present. */ |
29e57380 C |
30 | MEM_RW, /* read/write */ |
31 | MEM_RO, /* read only */ | |
fd79ecee DJ |
32 | MEM_WO, /* write only */ |
33 | ||
34 | /* Read/write, but special steps are required to write to it. */ | |
35 | MEM_FLASH | |
29e57380 C |
36 | }; |
37 | ||
38 | enum mem_access_width | |
39 | { | |
40 | MEM_WIDTH_UNSPECIFIED, | |
41 | MEM_WIDTH_8, /* 8 bit accesses */ | |
42 | MEM_WIDTH_16, /* 16 " " */ | |
43 | MEM_WIDTH_32, /* 32 " " */ | |
44 | MEM_WIDTH_64 /* 64 " " */ | |
45 | }; | |
46 | ||
47 | /* The set of all attributes that can be set for a memory region. | |
48 | ||
49 | This structure was created so that memory attributes can be passed | |
50 | to target_ functions without exposing the details of memory region | |
51 | list, which would be necessary if these fields were simply added to | |
52 | the mem_region structure. | |
53 | ||
54 | FIXME: It would be useful if there was a mechanism for targets to | |
55 | add their own attributes. For example, the number of wait states. */ | |
56 | ||
57 | struct mem_attrib | |
58 | { | |
59 | /* read/write, read-only, or write-only */ | |
60 | enum mem_access_mode mode; | |
61 | ||
62 | enum mem_access_width width; | |
63 | ||
64 | /* enables hardware breakpoints */ | |
65 | int hwbreak; | |
66 | ||
67 | /* enables host-side caching of memory region data */ | |
68 | int cache; | |
69 | ||
70 | /* enables memory verification. after a write, memory is re-read | |
71 | to verify that the write was successful. */ | |
72 | int verify; | |
fd79ecee DJ |
73 | |
74 | /* Block size. Only valid if mode == MEM_FLASH. */ | |
75 | int blocksize; | |
29e57380 C |
76 | }; |
77 | ||
78 | struct mem_region | |
79 | { | |
4b5752d0 | 80 | /* Lowest address in the region. */ |
29e57380 | 81 | CORE_ADDR lo; |
4b5752d0 VP |
82 | /* Address past the highest address of the region. |
83 | If 0, upper bound is "infinity". */ | |
29e57380 C |
84 | CORE_ADDR hi; |
85 | ||
86 | /* Item number of this memory region. */ | |
87 | int number; | |
88 | ||
b5de0fa7 EZ |
89 | /* Status of this memory region (enabled if non-zero, otherwise disabled) */ |
90 | int enabled_p; | |
29e57380 C |
91 | |
92 | /* Attributes for this region */ | |
93 | struct mem_attrib attrib; | |
94 | }; | |
95 | ||
c96fc75e DJ |
96 | /* Declare a vector type for a group of mem_region structures. The |
97 | typedef is necessary because vec.h can not handle a struct tag. | |
98 | Except during construction, these vectors are kept sorted. */ | |
99 | typedef struct mem_region mem_region_s; | |
100 | DEF_VEC_O(mem_region_s); | |
101 | ||
29e57380 C |
102 | extern struct mem_region *lookup_mem_region(CORE_ADDR); |
103 | ||
fd79ecee DJ |
104 | void invalidate_target_mem_regions (void); |
105 | ||
106 | void mem_region_init (struct mem_region *); | |
107 | ||
108 | int mem_region_cmp (const void *, const void *); | |
109 | ||
29e57380 | 110 | #endif /* MEMATTR_H */ |