/* Simulate breakpoints by patching locations in the target system, for GDB.
- Copyright 1990, 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2000,
- 2002 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2000, 2002,
+ 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by John Gilmore.
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
+ 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,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "target.h"
-/* Insert a breakpoint on targets that don't have any better breakpoint
- support. We read the contents of the target location and stash it,
- then overwrite it with a breakpoint instruction. ADDR is the target
- location in the target machine. CONTENTS_CACHE is a pointer to
- memory allocated for saving the target contents. It is guaranteed
- by the caller to be long enough to save BREAKPOINT_LEN bytes (this
- is accomplished via BREAKPOINT_MAX). */
+/* Insert a breakpoint on targets that don't have any better
+ breakpoint support. We read the contents of the target location
+ and stash it, then overwrite it with a breakpoint instruction.
+ BP_TGT->placed_address is the target location in the target
+ machine. BP_TGT->shadow_contents is some memory allocated for
+ saving the target contents. It is guaranteed by the caller to be
+ long enough to save BREAKPOINT_LEN bytes (this is accomplished via
+ BREAKPOINT_MAX). */
int
-default_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+default_memory_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
int val;
const unsigned char *bp;
- int bplen;
/* Determine appropriate breakpoint contents and size for this address. */
- bp = BREAKPOINT_FROM_PC (&addr, &bplen);
+ bp = gdbarch_breakpoint_from_pc
+ (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size);
if (bp == NULL)
- error ("Software breakpoints not implemented for this target.");
+ error (_("Software breakpoints not implemented for this target."));
/* Save the memory contents. */
- val = target_read_memory (addr, contents_cache, bplen);
+ bp_tgt->shadow_len = bp_tgt->placed_size;
+ val = target_read_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
/* Write the breakpoint. */
if (val == 0)
- val = target_write_memory (addr, (char *) bp, bplen);
+ val = target_write_memory (bp_tgt->placed_address, bp,
+ bp_tgt->placed_size);
return val;
}
int
-default_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+default_memory_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- const unsigned char *bp;
- int bplen;
-
- /* Determine appropriate breakpoint contents and size for this address. */
- bp = BREAKPOINT_FROM_PC (&addr, &bplen);
- if (bp == NULL)
- error ("Software breakpoints not implemented for this target.");
-
- return target_write_memory (addr, contents_cache, bplen);
+ return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
}
int
-memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+memory_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- return MEMORY_INSERT_BREAKPOINT(addr, contents_cache);
+ return gdbarch_memory_insert_breakpoint (gdbarch, bp_tgt);
}
int
-memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+memory_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- return MEMORY_REMOVE_BREAKPOINT(addr, contents_cache);
+ return gdbarch_memory_remove_breakpoint (gdbarch, bp_tgt);
}