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Move target-dcache out of target.c

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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.
This commit is contained in:
Yao Qi
2013-10-31 16:50:15 +08:00
parent f2de978509
commit 68c765e263
10 changed files with 185 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
gdb/target.c
View File

@ -23,6 +23,7 @@
#include <errno.h>
#include <string.h>
#include "target.h"
#include "target-dcache.h"
#include "gdbcmd.h"
#include "symtab.h"
#include "inferior.h"
@ -206,76 +207,6 @@ show_targetdebug (struct ui_file *file, int from_tty,
static void setup_target_debug (void);
/* 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);
}
/* Cache of memory operations, to speed up remote access. */
static DCACHE *target_dcache;
/* Target dcache is initialized or not. */
static 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. */
static DCACHE *
target_dcache_get_or_init (void)
{
if (!target_dcache_init_p ())
target_dcache = dcache_init ();
return target_dcache;
}
/* The user just typed 'target' without the name of a target. */
static void
@ -1616,7 +1547,7 @@ memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
the collected memory range fails. */
&& get_traceframe_number () == -1
&& (region->attrib.cache
|| (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY)))
|| (stack_cache_enabled () && object == TARGET_OBJECT_STACK_MEMORY)))
{
DCACHE *dcache = target_dcache_get_or_init ();
@ -1669,7 +1600,7 @@ memory_xfer_partial_1 (struct target_ops *ops, enum target_object object,
&& writebuf != NULL
&& target_dcache_init_p ()
&& !region->attrib.cache
&& stack_cache_enabled_p
&& stack_cache_enabled ()
&& object != TARGET_OBJECT_STACK_MEMORY)
{
DCACHE *dcache = target_dcache_get ();
@ -5162,17 +5093,6 @@ Tells gdb whether to control the inferior in asynchronous mode."),
&setlist,
&showlist);
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);
add_setshow_boolean_cmd ("may-write-registers", class_support,
&may_write_registers_1, _("\
Set permission to write into registers."), _("\