Set linux 32bit personality for 32 bit processes

Bug: 18069809
Change-Id: Ie143d56b0f8f03510dc451649291067e1add1d2f

linker/linker.cpp

@@ -36,6 +36,7 @@
 #include <string.h>
 #include <sys/mman.h>
 #include <sys/param.h>
+#include <sys/personality.h>
 #include <unistd.h>
 
 #include <new>
@@ -2663,6 +2664,12 @@ static ElfW(Addr) __linker_init_post_relocation(KernelArgumentBlock& args, ElfW(
     ldpreload_env = linker_env_get("LD_PRELOAD");
   }
 
+#if !defined(__LP64__)
+  if (personality(PER_LINUX32) == -1) {
+    __libc_fatal("error setting PER_LINUX32 personality: %s", strerror(errno));
+  }
+#endif
+
   INFO("[ android linker & debugger ]");
 
   soinfo* si = soinfo_alloc(args.argv[0], nullptr, 0, RTLD_GLOBAL);