mirror of
https://github.com/espressif/binutils-gdb.git
synced 2025-05-31 10:09:16 +08:00
68c765e263
This patch moves target_dcache related code out of target.c. gdb: 2013-11-20 Yao Qi <yao@codesourcery.com> * Makefile.in (SFILES):Add target-dcache.c. (HFILES_NO_SRCDIR): Add target-dcache.h. (COMMON_OBS): Add target-dcache.o. * dcache.c: Remove inclusion to "target.h". Include "target-dcache.h". * memattr.c: Include "target-dcache.h". * top.c: Likewise. * tracepoint.c: Likewise. * target.c: (stack_cache_enabled_p_1): Move to target-dcache.c. (stack_cache_enabled_p): Likewise. (set_stack_cache_enabled_p): Likewise. (show_stack_cache_enabled_p): Likewise. (target_dcache, target_dcache_init_p): Likewise. (target_dcache_invalidate): Likewise. (target_dcache_get, target_dcache_get_or_init): Likewise. (memory_xfer_partial_1): Call function stack_cache_enabled. (initialize_target): Move code to target-dcache.c. * target.h (target_dcache_invalidate): Move to target-dcache.h. (target_dcache_get): Likewise. * target-dcache.c: New. * target-dcache.h: New.
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/* Copyright (C) 1992-2013 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/>. */
|
|
|
|
#include "defs.h"
|
|
#include "target-dcache.h"
|
|
#include "gdbcmd.h"
|
|
|
|
/* Cache of memory operations, to speed up remote access. */
|
|
static DCACHE *target_dcache;
|
|
|
|
/* Target dcache is initialized or not. */
|
|
|
|
int
|
|
target_dcache_init_p (void)
|
|
{
|
|
return (target_dcache != NULL);
|
|
}
|
|
|
|
/* Invalidate the target dcache. */
|
|
|
|
void
|
|
target_dcache_invalidate (void)
|
|
{
|
|
if (target_dcache_init_p ())
|
|
dcache_invalidate (target_dcache);
|
|
}
|
|
|
|
/* Return the target dcache. Return NULL if target dcache is not
|
|
initialized yet. */
|
|
|
|
DCACHE *
|
|
target_dcache_get (void)
|
|
{
|
|
return target_dcache;
|
|
}
|
|
|
|
/* Return the target dcache. If it is not initialized yet, initialize
|
|
it. */
|
|
|
|
DCACHE *
|
|
target_dcache_get_or_init (void)
|
|
{
|
|
if (!target_dcache_init_p ())
|
|
target_dcache = dcache_init ();
|
|
|
|
return target_dcache;
|
|
}
|
|
|
|
/* The option sets this. */
|
|
static int stack_cache_enabled_p_1 = 1;
|
|
/* And set_stack_cache_enabled_p updates this.
|
|
The reason for the separation is so that we don't flush the cache for
|
|
on->on transitions. */
|
|
static int stack_cache_enabled_p = 1;
|
|
|
|
/* This is called *after* the stack-cache has been set.
|
|
Flush the cache for off->on and on->off transitions.
|
|
There's no real need to flush the cache for on->off transitions,
|
|
except cleanliness. */
|
|
|
|
static void
|
|
set_stack_cache_enabled_p (char *args, int from_tty,
|
|
struct cmd_list_element *c)
|
|
{
|
|
if (stack_cache_enabled_p != stack_cache_enabled_p_1)
|
|
target_dcache_invalidate ();
|
|
|
|
stack_cache_enabled_p = stack_cache_enabled_p_1;
|
|
}
|
|
|
|
static void
|
|
show_stack_cache_enabled_p (struct ui_file *file, int from_tty,
|
|
struct cmd_list_element *c, const char *value)
|
|
{
|
|
fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value);
|
|
}
|
|
|
|
/* Return true if "stack cache" is enabled, otherwise, return false. */
|
|
|
|
int
|
|
stack_cache_enabled (void)
|
|
{
|
|
return stack_cache_enabled_p;
|
|
}
|
|
|
|
/* -Wmissing-prototypes */
|
|
extern initialize_file_ftype _initialize_target_dcache;
|
|
|
|
void
|
|
_initialize_target_dcache (void)
|
|
{
|
|
add_setshow_boolean_cmd ("stack-cache", class_support,
|
|
&stack_cache_enabled_p_1, _("\
|
|
Set cache use for stack access."), _("\
|
|
Show cache use for stack access."), _("\
|
|
When on, use the data cache for all stack access, regardless of any\n\
|
|
configured memory regions. This improves remote performance significantly.\n\
|
|
By default, caching for stack access is on."),
|
|
set_stack_cache_enabled_p,
|
|
show_stack_cache_enabled_p,
|
|
&setlist, &showlist);
|
|
}
|