2011-12-06 Pedro Alves <pedro@codesourcery.com>

	gdb/
	* breakpoint.c (breakpoint_restore_shadows): Rename to ...
	(breakpoint_xfer_memory): ... this.  Change prototype.  Handle
	memory writes too.
	* breakpoint.h (breakpoint_restore_shadows): Delete.
	(breakpoint_xfer_memory): Declare.
	* mem-break.c (default_memory_insert_breakpoint)
	(default_memory_remove_breakpoint): Use target_write_raw_memory.
	(memory_xfer_partial): Rename to ...
	(memory_xfer_partial_1): ... this.  Don't mask out breakpoints
	here.
	(memory_xfer_partial): New.
	(target_write_raw_memory): New.
	* target.h (target_write_raw_memory): New.

	gdb/testsuite/
	* gdb.base/break-always.exp: Test changing memory at addresses
	with breakpoints inserted.

1 files changed, 11 insertions, 4 deletions

diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h
index ead3930e18f..ddf1881011d 100644
--- a/gdb/breakpoint.h
+++ b/gdb/breakpoint.h
@@ -1296,10 +1296,17 @@ extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *);
    target.  */
 int watchpoints_triggered (struct target_waitstatus *);
 
-/* Update BUF, which is LEN bytes read from the target address MEMADDR,
-   by replacing any memory breakpoints with their shadowed contents.  */
-void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, 
-				 LONGEST len);
+/* Helper for transparent breakpoint hiding for memory read and write
+   routines.
+
+   Update one of READBUF or WRITEBUF with either the shadows
+   (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
+   breakpoints at the memory range defined by MEMADDR and extending
+   for LEN bytes.  If writing, then WRITEBUF is a copy of WRITEBUF_ORG
+   on entry.*/
+extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
+				    const gdb_byte *writebuf_org,
+				    ULONGEST memaddr, LONGEST len);
 
 extern int breakpoints_always_inserted_mode (void);