1 files changed, 89 insertions, 0 deletions
diff --git a/tools/isprelinked/isprelinked.c b/tools/isprelinked/isprelinked.c
new file mode 100644
index 0000000..c677e39
--- /dev/null
+++ b/tools/isprelinked/isprelinked.c
@@ -0,0 +1,89 @@
+/* TODO:
+   1. check the ARM EABI version--this works for versions 1 and 2.
+   2. use a more-intelligent approach to finding the symbol table, symbol-string
+      table, and the .dynamic section.
+   3. fix the determination of the host and ELF-file endianness
+   4. write the help screen
+*/
+
+#include <stdio.h>
+#include <common.h>
+#include <debug.h>
+#include <libelf.h>
+#include <libebl.h>
+#ifdef ARM_SPECIFIC_HACKS
+    #include <libebl_arm.h>
+#endif/*ARM_SPECIFIC_HACKS*/
+#include <elf.h>
+#include <gelf.h>
+#include <string.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <rangesort.h>
+#include <prelink_info.h>
+#include <libgen.h>
+
+
+/* Flag set by --verbose.  This variable is global as it is accessed by the
+   macro INFO() in multiple compilation unites. */
+int verbose_flag = 0;
+/* Flag set by --quiet.  This variable is global as it is accessed by the
+   macro PRINT() in multiple compilation unites. */
+int quiet_flag = 0;
+
+int main(int argc, char **argv) {
+
+    argc--, argv++;
+    if (!argc)
+        return 0;
+
+    /* Check to see whether the ELF library is current. */
+    FAILIF (elf_version(EV_CURRENT) == EV_NONE, "libelf is out of date!\n");
+
+    const char *filename;
+    for (; argc; argc--) {
+        filename = *argv++;
+
+        Elf *elf;
+        GElf_Ehdr elf_hdr;
+        int fd; 
+        int prelinked;
+        long prelink_addr = 0;
+
+        INFO("Processing file [%s]\n", filename);
+
+        fd = open(filename, O_RDONLY);
+        FAILIF(fd < 0, "open(%d): %s (%d).\n", 
+               filename,
+               strerror(errno),
+               errno);
+
+        elf = elf_begin(fd, ELF_C_READ_MMAP_PRIVATE, NULL);
+        FAILIF_LIBELF(elf == NULL, elf_begin);
+
+        FAILIF_LIBELF(0 == gelf_getehdr(elf, &elf_hdr), 
+                      gelf_getehdr);
+
+#ifdef SUPPORT_ANDROID_PRELINK_TAGS
+        prelinked = check_prelinked(filename, elf_hdr.e_ident[EI_DATA] == ELFDATA2LSB, 
+                                    &prelink_addr);
+#else
+        #error 'SUPPORT_ANDROID_PRELINK_TAGS is not defined!'
+#endif
+
+        if (prelinked)
+            PRINT("%s: 0x%08x\n", filename, prelink_addr);
+        else
+            PRINT("%s: not prelinked\n", filename);
+
+        FAILIF_LIBELF(elf_end(elf), elf_end);
+        close(fd);
+    }
+    
+    return 0;
+} 
+