platform_build/tools/isprelinked/isprelinked.c
2009-03-03 19:28:42 -08:00

89 lines
2.3 KiB
C

/* 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FAILIF (elf_version(EV_CURRENT) == EV_NONE, "libelf is out of date!\n");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;
}