rx-tdep.c: Use target_read_code instead of target_read_memory.

This change causes the prologue scanner and the frame type scanner in
rx-tdep.c to use target_read_code() instead of target_read_memory().
This change allows these instruction scanners to operate much more
quickly due to the fact that target_read_code() can potentially read
from a cache maintained by GDB.

gdb/ChangeLog:

	* rx-tdep.c (rx_get_opcode_byte): Use target_read_code instead
	of target_read_memory.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8ab1330e9bd80dbbf9f33fd05335a43e0c9d4c8e..507042819cc77d5e4ea99f1d9b9fb9a03dcd60ce 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2015-07-10  Kevin Buettner  <kevinb@redhat.com>
+
+       * rx-tdep.c (rx_get_opcode_byte): Use target_read_code instead
+       of target_read_memory.
+
 2015-07-10  Andrew Burgess  <andrew.burgess@embecosm.com>
 
        * tui/tui-win.c (tui_set_win_height): Use a cleanup to free the

diff --git a/gdb/rx-tdep.c b/gdb/rx-tdep.c
index 8442c765f89ea5a938c8a0354bf3a7b97fa3e001..0bd91ff5f4b6221497aa31d6da55b4c035abf8b5 100644 (file)
--- a/gdb/rx-tdep.c
+++ b/gdb/rx-tdep.c
@@ -204,7 +204,7 @@ rx_get_opcode_byte (void *handle)
   int status;
   gdb_byte byte;
 
-  status = target_read_memory (opcdata->pc, &byte, 1);
+  status = target_read_code (opcdata->pc, &byte, 1);
   if (status == 0)
     {
       opcdata->pc += 1;