Check supported DF_1_XXX bits

ChangeLog

@@ -1,3 +1,18 @@
+2012-11-21  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* elf/elf.h (DF_1_NODIRECT): New macro.
+	(DF_1_IGNMULDEF): Likewise.
+	(DF_1_NOKSYMS): Likewise.
+	(DF_1_NOHDR): Likewise.
+	(DF_1_EDITED): Likewise.
+	(DF_1_NORELOC): Likewise.
+	(DF_1_SYMINTPOSE): Likewise.
+	(DF_1_GLOBAUDIT): Likewise.
+	(DF_1_SINGLETON): Likewise.
+	* elf/get-dynamic-info.h (elf_get_dynamic_info): Assert
+	DT_1_SUPPORTED_MASK bits.
+	* include/elf.h (DT_1_SUPPORTED_MASK): New macro.
+
 2012-11-20  Carlos O'Donell  <carlos_odonell@mentor.com>
 
 	* sysdeps/unix/make-syscalls.sh: Document prefixes.

elf/elf.h

@@ -798,6 +798,15 @@ typedef struct
 #define DF_1_ENDFILTEE	0x00004000	/* Filtee terminates filters search. */
 #define	DF_1_DISPRELDNE	0x00008000	/* Disp reloc applied at build time. */
 #define	DF_1_DISPRELPND	0x00010000	/* Disp reloc applied at run-time.  */
+#define	DF_1_NODIRECT	0x00020000	/* Object has no-direct binding. */
+#define	DF_1_IGNMULDEF	0x00040000
+#define	DF_1_NOKSYMS	0x00080000
+#define	DF_1_NOHDR	0x00100000
+#define	DF_1_EDITED	0x00200000	/* Object is modified after built.  */
+#define	DF_1_NORELOC	0x00400000
+#define	DF_1_SYMINTPOSE	0x00800000	/* Object has individual interposers.  */
+#define	DF_1_GLOBAUDIT	0x01000000	/* Global auditin required.  */
+#define	DF_1_SINGLETON	0x02000000	/* Singleton symbols are used.  */
 
 /* Flags for the feature selection in DT_FEATURE_1.  */
 #define DTF_1_PARINIT	0x00000001

elf/get-dynamic-info.h

@@ -151,6 +151,9 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
     {
       l->l_flags_1 = info[VERSYMIDX (DT_FLAGS_1)]->d_un.d_val;
 
+      /* Only DT_1_SUPPORTED_MASK bits are allowed.  */
+      assert ((l->l_flags_1 & ~DT_1_SUPPORTED_MASK) == 0);
+
       if (l->l_flags_1 & DF_1_NOW)
 	info[DT_BIND_NOW] = info[VERSYMIDX (DT_FLAGS_1)];
     }

include/elf.h

@@ -3,4 +3,10 @@
 /* Some information which is not meant for the public and therefore not
    in <elf.h>.  */
 # include <dl-dtprocnum.h>
+# ifdef DT_1_SUPPORTED_MASK
+#  error DT_1_SUPPORTED_MASK is defined!
+# endif
+# define DT_1_SUPPORTED_MASK \
+   (DF_1_NOW | DF_1_NODELETE | DF_1_INITFIRST | DF_1_NOOPEN \
+    | DF_1_ORIGIN | DF_1_NODEFLIB)
 #endif