Merge GDB 7.5.1

gdb/testsuite/gdb.trace/trace-mt.c

 /* This testcase is part of GDB, the GNU debugger.
 
-   Copyright 2011-2012 Free Software Foundation, Inc.
+   Copyright 2012 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
+#include <pthread.h>
+
 #ifdef SYMBOL_PREFIX
 #define SYMBOL(str)     SYMBOL_PREFIX #str
 #else
 #define SYMBOL(str)     #str
 #endif
-
-int globvar;
-
-static void
-begin (void)
-{}
-
 /* Called from asm.  */
 static void __attribute__((used))
 func (void)
 {}
 
-static void
-marker (int anarg)
+static void *
+thread_function(void *arg)
 {
-  /* `set_point' is the label at which to set a fast tracepoint.  The
+  /* `set_point1' is the label at which to set a fast tracepoint.  The
      insn at the label must be large enough to fit a fast tracepoint
      jump.  */
-  asm ("    .global " SYMBOL(set_point) "\n"
-       SYMBOL(set_point) ":\n"
+  asm ("    .global " SYMBOL(set_point1) "\n"
+       SYMBOL(set_point1) ":\n"
 #if (defined __x86_64__ || defined __i386__)
        "    call " SYMBOL(func) "\n"
 #endif
        );
-
-  ++anarg;
-
-  /* Set up a known 4-byte instruction so we can try to set a shorter
-     fast tracepoint at it.  */
-  asm ("    .global " SYMBOL(four_byter) "\n"
-       SYMBOL(four_byter) ":\n"
-#if (defined __i386__)
-       "    cmpl $0x1,0x8(%ebp) \n"
-#endif
-       );
 }
 
 static void
 end (void)
 {}
 
 int
-main ()
+main (int argc, char *argv[], char *envp[])
 {
-  begin ();
+  pthread_t threads[2];
+  int i;
 
-  for (globvar = 1; globvar < 11; ++globvar)
-    {
-      marker (globvar * 100);
-    }
+  for (i = 0; i < 2; i++)
+    pthread_create (&threads[i], NULL, thread_function, NULL);
+
+  for (i = 0; i < 2; i++)
+    pthread_join (threads[i], NULL);
 
   end ();
+
   return 0;
 }