2012-03-07 Pedro Alves <palves@redhat.com>

	gdb/doc/
	* gdb.texinfo (General Query Packets): Document new
	QProgramSignals packet.
	* gdb.texinfo (Remote configuration): Mention
	"program-signals-packet".

	gdb/gdbserver/
	* linux-low.c (get_detach_signal): New.
	(linux_detach_one_lwp): Get rid of a pending SIGSTOP with SIGCONT.
	Pass on pending signals to PTRACE_DETACH.  Check the result of the
	ptrace call.
	* server.c (program_signals, program_signals_p): New.
	(handle_general_set): Handle QProgramSignals.
	* server.h (program_signals, program_signals_p): Declare.

	gdb/
	* NEWS: Mention QProgramSignals.
	* inferior.h (update_signals_program_target): Declare.
	* infrun.c: (update_signals_program_target): New.
	(handle_command): Update the target of the new program signals
	array changes.
	* remote.c (PACKET_QProgramSignals): New enum.
	(last_program_signals_packet): New global.
	(remote_program_signals): New.
	(remote_start_remote): Update the target with the program signals
	list.
	(remote_protocol_features): Add entry for QPassSignals.
	(remote_open_1): Free anc clear last_program_signals_packet.
	(init_remote_ops): Install remote_program_signals.
	* target.c (update_current_target): Adjust.
	(target_program_signals): New.
	* target.h (struct target_ops) <to_program_signals>: New field.
	(target_program_signals): Declare.

1 files changed, 32 insertions, 1 deletions

diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index 0de3f52..586581c 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -59,6 +59,8 @@ int debug_threads;
 int debug_hw_points;
 
 int pass_signals[TARGET_SIGNAL_LAST];
+int program_signals[TARGET_SIGNAL_LAST];
+int program_signals_p;
 
 jmp_buf toplevel;
 
@@ -455,6 +457,33 @@ handle_general_set (char *own_buf)
       return;
     }
 
+  if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0)
+    {
+      int numsigs = (int) TARGET_SIGNAL_LAST, i;
+      const char *p = own_buf + strlen ("QProgramSignals:");
+      CORE_ADDR cursig;
+
+      program_signals_p = 1;
+
+      p = decode_address_to_semicolon (&cursig, p);
+      for (i = 0; i < numsigs; i++)
+	{
+	  if (i == cursig)
+	    {
+	      program_signals[i] = 1;
+	      if (*p == '\0')
+		/* Keep looping, to clear the remaining signals.  */
+		cursig = -1;
+	      else
+		p = decode_address_to_semicolon (&cursig, p);
+	    }
+	  else
+	    program_signals[i] = 0;
+	}
+      strcpy (own_buf, "OK");
+      return;
+    }
+
   if (strcmp (own_buf, "QStartNoAckMode") == 0)
     {
       if (remote_debug)
@@ -1584,7 +1613,9 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
 	  free (qsupported);
 	}
 
-      sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1);
+      sprintf (own_buf,
+	       "PacketSize=%x;QPassSignals+;QProgramSignals+",
+	       PBUFSIZ - 1);
 
       if (the_target->qxfer_libraries_svr4 != NULL)
 	strcat (own_buf, ";qXfer:libraries-svr4:read+");