/* Caching code. Typically used by remote back ends for
caching remote memory.
- Copyright 1992, 1993, 1995, 1998 Free Software Foundation, Inc.
+ Copyright 1992-1993, 1995, 1998-1999 Free Software Foundation, Inc.
This file is part of GDB.
int cache_has_stuff;
};
-static int dcache_poke_byte PARAMS ((DCACHE * dcache, CORE_ADDR addr,
- char *ptr));
+static int dcache_poke_byte (DCACHE * dcache, CORE_ADDR addr, char *ptr);
-static int dcache_peek_byte PARAMS ((DCACHE * dcache, CORE_ADDR addr,
- char *ptr));
+static int dcache_peek_byte (DCACHE * dcache, CORE_ADDR addr, char *ptr);
-static struct dcache_block *dcache_hit PARAMS ((DCACHE * dcache,
- CORE_ADDR addr));
+static struct dcache_block *dcache_hit (DCACHE * dcache, CORE_ADDR addr);
-static int dcache_write_line PARAMS ((DCACHE * dcache, struct dcache_block * db));
+static int dcache_write_line (DCACHE * dcache, struct dcache_block *db);
-static struct dcache_block *dcache_alloc PARAMS ((DCACHE * dcache));
+static struct dcache_block *dcache_alloc (DCACHE * dcache);
-static int dcache_writeback PARAMS ((DCACHE * dcache));
+static int dcache_writeback (DCACHE * dcache);
-static void dcache_info PARAMS ((char *exp, int tty));
+static void dcache_info (char *exp, int tty);
-void _initialize_dcache PARAMS ((void));
+void _initialize_dcache (void);
-int remote_dcache = 0;
+static int dcache_enabled_p = 0;
DCACHE *last_cache; /* Used by info dcache */
/* Free all the data cache blocks, thus discarding all cached data. */
void
-dcache_flush (dcache)
- DCACHE *dcache;
+dcache_flush (DCACHE *dcache)
{
int i;
dcache->valid_head = 0;
containing it. */
static struct dcache_block *
-dcache_hit (dcache, addr)
- DCACHE *dcache;
- CORE_ADDR addr;
+dcache_hit (DCACHE *dcache, CORE_ADDR addr)
{
register struct dcache_block *db;
be written is. */
static int
-dcache_write_line (dcache, db)
- DCACHE *dcache;
- register struct dcache_block *db;
+dcache_write_line (DCACHE *dcache, register struct dcache_block *db)
{
int s;
int e;
list...). */
static struct dcache_block *
-dcache_alloc (dcache)
- DCACHE *dcache;
+dcache_alloc (DCACHE *dcache)
{
register struct dcache_block *db;
- if (remote_dcache == 0)
+ if (dcache_enabled_p == 0)
abort ();
/* Take something from the free list */
Returns 0 on error. */
static int
-dcache_peek_byte (dcache, addr, ptr)
- DCACHE *dcache;
- CORE_ADDR addr;
- char *ptr;
+dcache_peek_byte (DCACHE *dcache, CORE_ADDR addr, char *ptr)
{
register struct dcache_block *db = dcache_hit (dcache, addr);
int ok = 1;
/* Writeback any dirty lines to the remote. */
static int
-dcache_writeback (dcache)
- DCACHE *dcache;
+dcache_writeback (DCACHE *dcache)
{
struct dcache_block *db;
}
-/* Using the data cache DCACHE return the contents of the word at
- address ADDR in the remote machine. */
-int
-dcache_fetch (dcache, addr)
- DCACHE *dcache;
- CORE_ADDR addr;
-{
- int res;
-
- if (dcache_xfer_memory (dcache, addr, (char *) &res, sizeof res, 0) != sizeof res)
- memory_error (EIO, addr);
-
- return res;
-}
-
-
/* Write the byte at PTR into ADDR in the data cache.
Return zero on write error.
*/
static int
-dcache_poke_byte (dcache, addr, ptr)
- DCACHE *dcache;
- CORE_ADDR addr;
- char *ptr;
+dcache_poke_byte (DCACHE *dcache, CORE_ADDR addr, char *ptr)
{
register struct dcache_block *db = dcache_hit (dcache, addr);
return 1;
}
-/* Write the word at ADDR both in the data cache and in the remote machine.
- Return zero on write error.
- */
-
-int
-dcache_poke (dcache, addr, data)
- DCACHE *dcache;
- CORE_ADDR addr;
- int data;
-{
- if (dcache_xfer_memory (dcache, addr, (char *) &data, sizeof data, 1) != sizeof data)
- return 0;
-
- return dcache_writeback (dcache);
-}
-
-
/* Initialize the data cache. */
DCACHE *
-dcache_init (reading, writing)
- memxferfunc reading;
- memxferfunc writing;
+dcache_init (memxferfunc reading, memxferfunc writing)
{
int csize = sizeof (struct dcache_block) * DCACHE_SIZE;
DCACHE *dcache;
This routine is indended to be called by remote_xfer_ functions. */
int
-dcache_xfer_memory (dcache, memaddr, myaddr, len, should_write)
- DCACHE *dcache;
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int should_write;
+dcache_xfer_memory (DCACHE *dcache, CORE_ADDR memaddr, char *myaddr, int len,
+ int should_write)
{
int i;
- if (remote_dcache)
+ if (dcache_enabled_p)
{
- int (*xfunc) PARAMS ((DCACHE * dcache, CORE_ADDR addr, char *ptr));
+ int (*xfunc) (DCACHE * dcache, CORE_ADDR addr, char *ptr);
xfunc = should_write ? dcache_poke_byte : dcache_peek_byte;
for (i = 0; i < len; i++)
}
static void
-dcache_info (exp, tty)
- char *exp;
- int tty;
+dcache_info (char *exp, int tty)
{
struct dcache_block *p;
- if (!remote_dcache)
+ if (!dcache_enabled_p)
{
printf_filtered ("Dcache not enabled\n");
return;
for (p = last_cache->valid_head; p; p = p->p)
{
int j;
- printf_filtered ("Line at %08xd, referenced %d times\n",
- p->addr, p->refs);
+ printf_filtered ("Line at %s, referenced %d times\n",
+ paddr (p->addr), p->refs);
for (j = 0; j < LINE_SIZE; j++)
printf_filtered ("%02x", p->data[j] & 0xFF);
}
}
+/* Turn dcache on or off. */
+void
+set_dcache_state (int what)
+{
+ dcache_enabled_p = !!what;
+}
+
void
-_initialize_dcache ()
+_initialize_dcache (void)
{
add_show_from_set
(add_set_cmd ("remotecache", class_support, var_boolean,
- (char *) &remote_dcache,
+ (char *) &dcache_enabled_p,
"\
Set cache use for remote targets.\n\
When on, use data caching for remote targets. For many remote targets\n\
this option can offer better throughput for reading target memory.\n\
Unfortunately, gdb does not currently know anything about volatile\n\
registers and thus data caching will produce incorrect results with\n\
-volatile registers are in use. By default, this option is on.",
+volatile registers are in use. By default, this option is off.",
&setlist),
&showlist);
projects / thirdparty / binutils-gdb.git / blobdiff