Eliminate prepare_to_throw_exception

No longer necessary.

gdb/ChangeLog:
2016-04-12  Pedro Alves  <palves@redhat.com>

	* common/common-exceptions.c (exception_rethrow): Remove
	prepare_to_throw_exception call.
	* common/common-exceptions.h (prepare_to_throw_exception): Delete
	declaration.
	* exceptions.c (prepare_to_throw_exception): Delete.

gdb/gdbserver/ChangeLog:
2016-04-12  Pedro Alves  <palves@redhat.com>

	* utils.c (prepare_to_throw_exception): Delete.

6 files changed, 12 insertions, 22 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c14eb70..5dfd4b0 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@
 2016-04-12  Pedro Alves  <palves@redhat.com>
 
+	* common/common-exceptions.c (exception_rethrow): Remove
+	prepare_to_throw_exception call.
+	* common/common-exceptions.h (prepare_to_throw_exception): Delete
+	declaration.
+	* exceptions.c (prepare_to_throw_exception): Delete.
+
+2016-04-12  Pedro Alves  <palves@redhat.com>
+
 	* target.c (target_check_pending_interrupt): Delete.
 	* target.h (struct target_ops) <to_check_pending_interrupt>:
 	Remove method.
diff --git a/gdb/common/common-exceptions.c b/gdb/common/common-exceptions.c
index 829ce12..5ea8188 100644
--- a/gdb/common/common-exceptions.c
+++ b/gdb/common/common-exceptions.c
@@ -248,7 +248,6 @@ exception_rethrow (void)
 {
   /* Run this scope's cleanups before re-throwing to the next
      outermost scope.  */
-  prepare_to_throw_exception ();
   do_cleanups (all_cleanups ());
   throw;
 }
@@ -268,8 +267,6 @@ gdb_exception_sliced_copy (struct gdb_exception *to, const struct gdb_exception
 void
 throw_exception (struct gdb_exception exception)
 {
-  prepare_to_throw_exception ();
-
   do_cleanups (all_cleanups ());
 
 #if GDB_XCPT == GDB_XCPT_SJMP
diff --git a/gdb/common/common-exceptions.h b/gdb/common/common-exceptions.h
index 398a2fb..54c6249 100644
--- a/gdb/common/common-exceptions.h
+++ b/gdb/common/common-exceptions.h
@@ -270,12 +270,6 @@ struct gdb_exception_RETURN_MASK_QUIT : public gdb_exception_RETURN_MASK_ALL
 
 /* *INDENT-ON* */
 
-/* Hook to allow client-specific actions to be performed prior to
-   throwing an exception.  This function must be provided by the
-   client, and will be called before any cleanups are run.  */
-
-extern void prepare_to_throw_exception (void);
-
 /* Throw an exception (as described by "struct gdb_exception").  Will
    execute a LONG JUMP to the inner most containing exception handler
    established using catch_exceptions() (or similar).
diff --git a/gdb/exceptions.c b/gdb/exceptions.c
index 7f6599f..0e60050 100644
--- a/gdb/exceptions.c
+++ b/gdb/exceptions.c
@@ -27,11 +27,6 @@
 #include "serial.h"
 #include "gdbthread.h"
 
-void
-prepare_to_throw_exception (void)
-{
-}
-
 static void
 print_flush (void)
 {
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 8b8c2c1..0d2df72 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,7 @@
+2016-04-12  Pedro Alves  <palves@redhat.com>
+
+	* utils.c (prepare_to_throw_exception): Delete.
+
 2016-04-05  Simon Marchi  <simon.marchi@ericsson.com>
 
 	* Makefile.in ($(IPA_LIB)): Set SONAME of the IPA lib.
diff --git a/gdb/gdbserver/utils.c b/gdb/gdbserver/utils.c
index 59bb323..37b9c89 100644
--- a/gdb/gdbserver/utils.c
+++ b/gdb/gdbserver/utils.c
@@ -137,11 +137,3 @@ pfildes (gdb_fildes_t fd)
   return plongest (fd);
 #endif
 }
-
-/* See common/common-exceptions.h.  */
-
-void
-prepare_to_throw_exception (void)
-{
-  /* No client-specific actions required.  */
-}