Copyright 1992, 1993 Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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 DCACHE_H
#define DCACHE_H
-/* The data cache leads to incorrect results because it doesn't know about
- volatile variables, thus making it impossible to debug functions which
- use hardware registers. Therefore it is #if 0'd out. Effect on
- performance is some, for backtraces of functions with a few
- arguments each. For functions with many arguments, the stack
- frames don't fit in the cache blocks, which makes the cache less
- helpful. Disabling the cache is a big performance win for fetching
- large structures, because the cache code fetched data in 16-byte
- chunks. */
+typedef int (*memxferfunc) PARAMS ((CORE_ADDR memaddr,
+ char *myaddr,
+ int len));
-#define LINE_SIZE_POWER (4)
-/* eg 1<<3 == 8 */
-#define LINE_SIZE (1 << LINE_SIZE_POWER)
-/* Number of cache blocks */
-#define DCACHE_SIZE (64)
-
-struct dcache_block
-{
- struct dcache_block *next, *last;
- unsigned int addr; /* Address for which data is recorded. */
- int data[LINE_SIZE / sizeof (int)];
-};
-
-typedef int (*memxferfunc) PARAMS((CORE_ADDR memaddr,
- unsigned char *myaddr,
- int len));
-
-typedef struct {
- /* Function to actually read the target memory. */
- memxferfunc read_memory;
-
- /* Function to actually write the target memory */
- memxferfunc write_memory;
-
- /* free list */
- struct dcache_block dcache_free;
-
- /* in use list */
- struct dcache_block dcache_valid;
-
- /* The cache itself. */
- struct dcache_block *the_cache;
-
-} DCACHE;
+typedef struct dcache_struct DCACHE;
/* Using the data cache DCACHE return the contents of the word at
address ADDR in the remote machine. */
-int dcache_fetch PARAMS((DCACHE *dcache, CORE_ADDR addr));
+int dcache_fetch PARAMS ((DCACHE * dcache, CORE_ADDR addr));
/* Flush DCACHE. */
-void dcache_flush PARAMS((DCACHE *dcache));
+void dcache_flush PARAMS ((DCACHE * dcache));
/* Initialize DCACHE. */
-DCACHE *dcache_init PARAMS((memxferfunc reading, memxferfunc writing));
+DCACHE *dcache_init PARAMS ((memxferfunc reading, memxferfunc writing));
/* Write the word at ADDR both in the data cache and in the remote machine. */
-void dcache_poke PARAMS((DCACHE *dcache, CORE_ADDR addr, int data));
+int dcache_poke PARAMS ((DCACHE * dcache, CORE_ADDR addr, int data));
+
+/* Simple to call from <remote>_xfer_memory */
+
+int dcache_xfer_memory PARAMS ((DCACHE * cache, CORE_ADDR mem, char *my, int len, int should_write));
+/* Write the bytes at ADDR into the data cache and the remote machine. */
+int dcache_poke_block PARAMS ((DCACHE * cache, CORE_ADDR mem, char *my, int len));
#endif /* DCACHE_H */
projects / deliverable / binutils-gdb.git / blobdiff