bionic: add machine type check

android linker doesn't check machine type, it may load some
libraries which it doesn't support sometimes.

Author: Zhenghua Wang <zhenghua.wang@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>

diff --git a/linker/linker.c b/linker/linker.c
index e0a8a18..17008f8 100644 (file)
--- a/linker/linker.c
+++ b/linker/linker.c
@@ -707,7 +707,11 @@ verify_elf_object(void *base, const char *name)
     if (hdr->e_ident[EI_MAG3] != ELFMAG3) return -1;
 
     /* TODO: Should we verify anything else in the header? */
-
+#ifdef ANDROID_ARM_LINKER
+    if (hdr->e_machine != EM_ARM) return -1;
+#elif defined(ANDROID_X86_LINKER)
+    if (hdr->e_machine != EM_386) return -1;
+#endif
     return 0;
 }