From 03583c206f350870e077f4e112f83b3c4bdd0b27 Mon Sep 17 00:00:00 2001
From: Ulrich Weigand <uweigand@de.ibm.com>
Date: Fri, 7 Oct 2011 12:06:48 +0000
Subject: 	* inferior.h (disable_randomization): Declare. 	* infrun.c
 (disable_randomization): New global variable. 	(show_disable_randomization):
 New function. 	(set_disable_randomization): Likewise. 	(_initialize_infrun):
 Install set/show disable-randomization 	commands. 	* linux-nat.c
 (disable_randomization): Remove. 	(show_disable_randomization):
 Likewise. 	(set_disable_randomization): Likewise. 
 (_initialize_linux_nat): No longer install set/show 	disable-randomization
 commands here. 	(linux_nat_supports_disable_randomization): New
 function. 	(linux_nat_add_target): Install it. 	* remote.c
 (PACKET_QDisableRandomization): New enum value. 
 (remote_protocol_packets): Support QDisableRandomization. 
 (_initialize_remote): Likewise. 
 (remote_supports_disable_randomization): New function. 
 (init_remote_ops): Install it. 
 (extended_remote_supports_disable_randomization): New function. 
 (init_extended_remote_ops): Install it. 
 (extended_remote_disable_randomization): New function. 
 (extended_remote_create_inferior_1): Call it. 	* target.h (struct
 target_ops): Add to_supports_disable_randomization. 
 (target_supports_disable_randomization): Add prototype. 	* target.c
 (target_supports_disable_randomization): New function. 
 (find_default_supports_disable_randomization): Likewise. 
 (init_dummy_target): Install it.

doc/
	* gdb.texinfo (Starting your Program): "set disable-randomization"
	is no longer Linux-specific.
	(Remote Configuration): Document "set remote
	disable-randomization-packet".
	(General Query Packets): Document "QDisableRandomization" packet
	and add it to "qSupported" list.

gdbserver/
	* configure.ac: Check support for personality routine.
	* configure: Regenerate.
	* config.in: Likewise.
	* linux-low.c: Include <sys/personality.h>.
	Define ADDR_NO_RANDOMIZE if necessary.
	(linux_create_inferior): Disable address space randomization when
	forking inferior, if requested.
	(linux_supports_disable_randomization): New function.
	(linux_target_ops): Install it.
	* server.h (disable_randomization): Declare.
	* server.c (disable_randomization): New global variable.
	(handle_general_set): Handle QDisableRandomization.
	(handle_query): Likewise for qSupported.
	(main): Support --disable-randomization and --no-disable-randomization
	command line arguments.
	* target.h (struct target_ops): Add supports_disable_randomization.
	(target_supports_disable_randomization): New macro.
---
 gdb/infrun.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'gdb/infrun.c')

diff --git a/gdb/infrun.c b/gdb/infrun.c
index 225034c..cc2e29b 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -147,6 +147,37 @@ show_debug_infrun (struct ui_file *file, int from_tty,
   fprintf_filtered (file, _("Inferior debugging is %s.\n"), value);
 }
 
+
+/* Support for disabling address space randomization.  */
+
+int disable_randomization = 1;
+
+static void
+show_disable_randomization (struct ui_file *file, int from_tty,
+			    struct cmd_list_element *c, const char *value)
+{
+  if (target_supports_disable_randomization ())
+    fprintf_filtered (file,
+		      _("Disabling randomization of debuggee's "
+			"virtual address space is %s.\n"),
+		      value);
+  else
+    fputs_filtered (_("Disabling randomization of debuggee's "
+		      "virtual address space is unsupported on\n"
+		      "this platform.\n"), file);
+}
+
+static void
+set_disable_randomization (char *args, int from_tty,
+			   struct cmd_list_element *c)
+{
+  if (!target_supports_disable_randomization ())
+    error (_("Disabling randomization of debuggee's "
+	     "virtual address space is unsupported on\n"
+	     "this platform."));
+}
+
+
 /* If the program uses ELF-style shared libraries, then calls to
    functions in shared libraries go through stubs, which live in a
    table called the PLT (Procedure Linkage Table).  The first time the
@@ -7232,6 +7263,19 @@ Show whether gdb will detach the child of a fork."), _("\
 Tells gdb whether to detach the child of a fork."),
 			   NULL, NULL, &setlist, &showlist);
 
+  /* Set/show disable address space randomization mode.  */
+
+  add_setshow_boolean_cmd ("disable-randomization", class_support,
+			   &disable_randomization, _("\
+Set disabling of debuggee's virtual address space randomization."), _("\
+Show disabling of debuggee's virtual address space randomization."), _("\
+When this mode is on (which is the default), randomization of the virtual\n\
+address space is disabled.  Standalone programs run with the randomization\n\
+enabled by default on some platforms."),
+			   &set_disable_randomization,
+			   &show_disable_randomization,
+			   &setlist, &showlist);
+
   /* ptid initializations */
   inferior_ptid = null_ptid;
   target_last_wait_ptid = minus_one_ptid;
-- 
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