ARM and ARMv7-M ELF support; STM32F4Discovery ELF loader test configuration

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5264 42af7a65-404d-4744-a932-0658087f49c3

examples/README.txt

@@ -333,8 +333,8 @@ examples/elf
      include the path to the genromfs executable.
 
   3. ELF size:  The ELF files in this example are, be default, quite large
-     because they include a lot of "build garbage".  You can greately reduce the
+     because they include a lot of "build garbage".  You can greatly reduce the
-     size of the ELF binaries are using the objcopy --strip-unneeded command to
+     size of the ELF binaries are using the 'objcopy --strip-unneeded' command to
      remove un-necessary information from the ELF files.
 
   4. Simulator.  You cannot use this example with the the NuttX simulator on

examples/elf/tests/longjmp/longjmp.c

@@ -74,6 +74,10 @@ static int leaf(int *some_arg)
   printf("leaf: Calling longjmp() with %d\n", some_local_variable);
 
   longjmp(env, some_local_variable);
+
+  /* We should not get here */
+
+  return -ERROR; 
 }
 
 static int function(int some_arg)

examples/nxflat/tests/longjmp/longjmp.c

@@ -74,6 +74,10 @@ static int leaf(int *some_arg)
   printf("leaf: Calling longjmp() with %d\n", some_local_variable);
 
   longjmp(env, some_local_variable);
+
+  /* We should not get here */
+
+  return -ERROR; 
 }
 
 static int function(int some_arg)

examples/nxflat/tests/signal/signal.c

@@ -38,6 +38,7 @@
  ****************************************************************************/
 
 #include <sys/types.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>