132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/* Memory attributes support, for GDB.
|
|
|
|
Copyright (C) 2001-2022 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program 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 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef MEMATTR_H
|
|
#define MEMATTR_H
|
|
|
|
enum mem_access_mode
|
|
{
|
|
MEM_NONE, /* Memory that is not physically present. */
|
|
MEM_RW, /* read/write */
|
|
MEM_RO, /* read only */
|
|
MEM_WO, /* write only */
|
|
|
|
/* Read/write, but special steps are required to write to it. */
|
|
MEM_FLASH
|
|
};
|
|
|
|
enum mem_access_width
|
|
{
|
|
MEM_WIDTH_UNSPECIFIED,
|
|
MEM_WIDTH_8, /* 8 bit accesses */
|
|
MEM_WIDTH_16, /* 16 " " */
|
|
MEM_WIDTH_32, /* 32 " " */
|
|
MEM_WIDTH_64 /* 64 " " */
|
|
};
|
|
|
|
/* The set of all attributes that can be set for a memory region.
|
|
|
|
This structure was created so that memory attributes can be passed
|
|
to target_ functions without exposing the details of memory region
|
|
list, which would be necessary if these fields were simply added to
|
|
the mem_region structure.
|
|
|
|
FIXME: It would be useful if there was a mechanism for targets to
|
|
add their own attributes. For example, the number of wait states. */
|
|
|
|
struct mem_attrib
|
|
{
|
|
static mem_attrib unknown ()
|
|
{
|
|
mem_attrib attrib;
|
|
|
|
attrib.mode = MEM_NONE;
|
|
|
|
return attrib;
|
|
}
|
|
|
|
/* read/write, read-only, or write-only */
|
|
enum mem_access_mode mode = MEM_RW;
|
|
|
|
enum mem_access_width width = MEM_WIDTH_UNSPECIFIED;
|
|
|
|
/* enables hardware breakpoints */
|
|
int hwbreak = 0;
|
|
|
|
/* enables host-side caching of memory region data */
|
|
int cache = 0;
|
|
|
|
/* Enables memory verification. After a write, memory is re-read
|
|
to verify that the write was successful. */
|
|
int verify = 0;
|
|
|
|
/* Block size. Only valid if mode == MEM_FLASH. */
|
|
int blocksize = -1;
|
|
};
|
|
|
|
struct mem_region
|
|
{
|
|
/* Create a mem_region with default attributes. */
|
|
|
|
mem_region (CORE_ADDR lo_, CORE_ADDR hi_)
|
|
: lo (lo_), hi (hi_)
|
|
{}
|
|
|
|
/* Create a mem_region with access mode MODE_, but otherwise default
|
|
attributes. */
|
|
|
|
mem_region (CORE_ADDR lo_, CORE_ADDR hi_, mem_access_mode mode_)
|
|
: lo (lo_), hi (hi_)
|
|
{
|
|
attrib.mode = mode_;
|
|
}
|
|
|
|
/* Create a mem_region with attributes ATTRIB_. */
|
|
|
|
mem_region (CORE_ADDR lo_, CORE_ADDR hi_, const mem_attrib &attrib_)
|
|
: lo (lo_), hi (hi_), attrib (attrib_)
|
|
{}
|
|
|
|
bool operator< (const mem_region &other) const
|
|
{
|
|
return this->lo < other.lo;
|
|
}
|
|
|
|
/* Lowest address in the region. */
|
|
CORE_ADDR lo;
|
|
/* Address past the highest address of the region.
|
|
If 0, upper bound is "infinity". */
|
|
CORE_ADDR hi;
|
|
|
|
/* Item number of this memory region. */
|
|
int number = 0;
|
|
|
|
/* Status of this memory region (enabled if true, otherwise
|
|
disabled). */
|
|
bool enabled_p = true;
|
|
|
|
/* Attributes for this region. */
|
|
mem_attrib attrib;
|
|
};
|
|
|
|
extern struct mem_region *lookup_mem_region (CORE_ADDR);
|
|
|
|
void invalidate_target_mem_regions (void);
|
|
|
|
#endif /* MEMATTR_H */
|