/* Simulate breakpoints by patching locations in the target system, for GDB.
- Copyright (C) 1990, 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2000, 2002,
- 2007 Free Software Foundation, Inc.
+ Copyright (C) 1990-1993, 1995, 1997-2000, 2002, 2007-2012 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "breakpoint.h"
#include "inferior.h"
#include "target.h"
+#include "gdb_string.h"
/* Insert a breakpoint on targets that don't have any better
BREAKPOINT_MAX). */
int
-default_memory_insert_breakpoint (struct bp_target_info *bp_tgt)
+default_memory_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
int val;
const unsigned char *bp;
- int bplen;
+ gdb_byte *readbuf;
/* Determine appropriate breakpoint contents and size for this address. */
- bp = BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size);
+ 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."));
- /* Save the memory contents. */
+ /* Save the memory contents in the shadow_contents buffer and then
+ write the breakpoint instruction. */
bp_tgt->shadow_len = bp_tgt->placed_size;
- val = target_read_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ readbuf = alloca (bp_tgt->placed_size);
+ val = target_read_memory (bp_tgt->placed_address, readbuf,
bp_tgt->placed_size);
-
- /* Write the breakpoint. */
if (val == 0)
- val = target_write_memory (bp_tgt->placed_address, bp,
- bp_tgt->placed_size);
+ {
+ memcpy (bp_tgt->shadow_contents, readbuf, bp_tgt->placed_size);
+ val = target_write_raw_memory (bp_tgt->placed_address, bp,
+ bp_tgt->placed_size);
+ }
return val;
}
int
-default_memory_remove_breakpoint (struct bp_target_info *bp_tgt)
+default_memory_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
- bp_tgt->placed_size);
+ return target_write_raw_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
}
int
-memory_insert_breakpoint (struct bp_target_info *bp_tgt)
+memory_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- return gdbarch_memory_insert_breakpoint (current_gdbarch, bp_tgt);
+ return gdbarch_memory_insert_breakpoint (gdbarch, bp_tgt);
}
int
-memory_remove_breakpoint (struct bp_target_info *bp_tgt)
+memory_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- return gdbarch_memory_remove_breakpoint (current_gdbarch, bp_tgt);
+ return gdbarch_memory_remove_breakpoint (gdbarch, bp_tgt);
}