projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 80629b1b EZ |
1 | /* Memory attributes support, for GDB. |
| 2 | Copyright 2001 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GDB. | |
| 5 | ||
| 6 | This program is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2 of the License, or | |
| 9 | (at your option) any later version. | |
| 10 | ||
| 11 | This program is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with this program; if not, write to the Free Software | |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
| 19 | Boston, MA 02111-1307, USA. */ | |
| 20 | ||
| 29e57380 C |
21 | #ifndef MEMATTR_H |
| 22 | #define MEMATTR_H | |
| 23 | ||
| 24 | enum mem_access_mode | |
| 25 | { | |
| 26 | MEM_RW, /* read/write */ | |
| 27 | MEM_RO, /* read only */ | |
| ba41d549 | 28 | MEM_WO /* write only */ |
| 29e57380 C |
29 | }; |
| 30 | ||
| 31 | enum mem_access_width | |
| 32 | { | |
| 33 | MEM_WIDTH_UNSPECIFIED, | |
| 34 | MEM_WIDTH_8, /* 8 bit accesses */ | |
| 35 | MEM_WIDTH_16, /* 16 " " */ | |
| 36 | MEM_WIDTH_32, /* 32 " " */ | |
| 37 | MEM_WIDTH_64 /* 64 " " */ | |
| 38 | }; | |
| 39 | ||
| 40 | /* The set of all attributes that can be set for a memory region. | |
| 41 | ||
| 42 | This structure was created so that memory attributes can be passed | |
| 43 | to target_ functions without exposing the details of memory region | |
| 44 | list, which would be necessary if these fields were simply added to | |
| 45 | the mem_region structure. | |
| 46 | ||
| 47 | FIXME: It would be useful if there was a mechanism for targets to | |
| 48 | add their own attributes. For example, the number of wait states. */ | |
| 49 | ||
| 50 | struct mem_attrib | |
| 51 | { | |
| 52 | /* read/write, read-only, or write-only */ | |
| 53 | enum mem_access_mode mode; | |
| 54 | ||
| 55 | enum mem_access_width width; | |
| 56 | ||
| 57 | /* enables hardware breakpoints */ | |
| 58 | int hwbreak; | |
| 59 | ||
| 60 | /* enables host-side caching of memory region data */ | |
| 61 | int cache; | |
| 62 | ||
| 63 | /* enables memory verification. after a write, memory is re-read | |
| 64 | to verify that the write was successful. */ | |
| 65 | int verify; | |
| 66 | }; | |
| 67 | ||
| 68 | struct mem_region | |
| 69 | { | |
| 70 | /* FIXME: memory regions are stored in an unsorted singly-linked | |
| 71 | list. This probably won't scale to handle hundreds of memory | |
| 72 | regions --- that many could be needed to describe the allowed | |
| 73 | access modes for memory mapped i/o device registers. */ | |
| 74 | struct mem_region *next; | |
| 75 | ||
| 76 | CORE_ADDR lo; | |
| 77 | CORE_ADDR hi; | |
| 78 | ||
| 79 | /* Item number of this memory region. */ | |
| 80 | int number; | |
| 81 | ||
| b5de0fa7 EZ |
82 | /* Status of this memory region (enabled if non-zero, otherwise disabled) */ |
| 83 | int enabled_p; | |
| 29e57380 C |
84 | |
| 85 | /* Attributes for this region */ | |
| 86 | struct mem_attrib attrib; | |
| 87 | }; | |
| 88 | ||
| 89 | extern struct mem_region *lookup_mem_region(CORE_ADDR); | |
| 90 | ||
| 91 | #endif /* MEMATTR_H */ |