mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/* Memory attributes support, for GDB.
|
|
Copyright 2001 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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef MEMATTR_H
|
|
#define MEMATTR_H
|
|
|
|
enum mem_access_mode
|
|
{
|
|
MEM_RW, /* read/write */
|
|
MEM_RO, /* read only */
|
|
MEM_WO /* write only */
|
|
};
|
|
|
|
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
|
|
{
|
|
/* read/write, read-only, or write-only */
|
|
enum mem_access_mode mode;
|
|
|
|
enum mem_access_width width;
|
|
|
|
/* enables hardware breakpoints */
|
|
int hwbreak;
|
|
|
|
/* enables host-side caching of memory region data */
|
|
int cache;
|
|
|
|
/* enables memory verification. after a write, memory is re-read
|
|
to verify that the write was successful. */
|
|
int verify;
|
|
};
|
|
|
|
struct mem_region
|
|
{
|
|
/* FIXME: memory regions are stored in an unsorted singly-linked
|
|
list. This probably won't scale to handle hundreds of memory
|
|
regions --- that many could be needed to describe the allowed
|
|
access modes for memory mapped i/o device registers. */
|
|
struct mem_region *next;
|
|
|
|
CORE_ADDR lo;
|
|
CORE_ADDR hi;
|
|
|
|
/* Item number of this memory region. */
|
|
int number;
|
|
|
|
/* Status of this memory region (enabled or disabled) */
|
|
int status;
|
|
|
|
/* Attributes for this region */
|
|
struct mem_attrib attrib;
|
|
};
|
|
|
|
extern struct mem_region *lookup_mem_region(CORE_ADDR);
|
|
|
|
#endif /* MEMATTR_H */
|