* remote.c (init_remote_state): Add special handling for placeholder

registers.

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2007-02-26  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* remote.c (init_remote_state): Add special handling for placeholder
+	registers.
+
 2007-02-26  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* Makefile.in (XMLFILES): Include $(TDEP_XML).

gdb/remote.c

@@ -340,7 +340,13 @@ init_remote_state (struct gdbarch *gdbarch)
   for (regnum = 0; regnum < NUM_REGS; regnum++)
     {
       struct packet_reg *r = &rsa->regs[regnum];
-      r->pnum = gdbarch_remote_register_number (gdbarch, regnum);
+
+      if (register_size (current_gdbarch, regnum) == 0)
+	/* Do not try to fetch zero-sized (placeholder) registers.  */
+	r->pnum = -1;
+      else
+	r->pnum = gdbarch_remote_register_number (gdbarch, regnum);
+
       r->regnum = regnum;
     }