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#serial 7
dnl Some libelf versions have bugs in Elf64_Sxword conversions.
dnl Detect it.
dnl Written by Jakub Jelinek <jakub@redhat.com>.
AC_DEFUN(AC_LIBELF_SXWORD,
[AC_TRY_RUN([
#include <errno.h>
#include <fcntl.h>
#include <elf.h>
#include <libelf.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
static unsigned char sparc64_elf[] = {
0x7f,0x45,0x4c,0x46,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x01,0x00,0x2b,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,
0x00,0x00,0x00,0x02,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x08,0x00,0x05,
0x00,0x00,0x07,0xff,0xf0,0x00,0x00,0x00,0x00,0x2e,0x73,0x79,0x6d,0x74,0x61,0x62,
0x00,0x2e,0x73,0x74,0x72,0x74,0x61,0x62,0x00,0x2e,0x73,0x68,0x73,0x74,0x72,0x74,
0x61,0x62,0x00,0x2e,0x74,0x65,0x78,0x74,0x00,0x2e,0x64,0x61,0x74,0x61,0x00,0x2e,
0x62,0x73,0x73,0x00,0x66,0x6f,0x6f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1b,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x21,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x27,0x00,0x00,0x00,0x08,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x2c,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x11,0x00,0x00,0x00,0x03,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x48,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x02,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x78,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,
0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x09,0x00,0x00,0x00,0x03,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x02,0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x02,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x04,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00 };
int main (void)
{
Elf *elf;
int fd;
Elf64_Ehdr *ehdr;
Elf64_Addr val;
Elf_Scn *scn;
fd = open ("conflibelftest", O_RDWR | O_CREAT | O_EXCL); if (fd == -1) exit (1);
unlink ("conflibelftest");
if (write (fd, sparc64_elf, sizeof(sparc64_elf)) != sizeof(sparc64_elf))
exit (1);
if (lseek (fd, 0, SEEK_SET) != 0) exit (1);
elf_version (EV_CURRENT);
elf = elf_begin (fd, ELF_C_RDWR, NULL); if (elf == NULL) exit (2);
if ((ehdr = elf64_getehdr (elf)) == NULL) exit (3);
scn = NULL;
while ((scn = elf_nextscn (elf, scn)) != NULL)
{
char *name = NULL;
Elf64_Shdr *shdr;
Elf_Data *src, *dst;
if ((shdr = elf64_getshdr (scn))
&& (name = elf_strptr (elf, ehdr->e_shstrndx, shdr->sh_name))
&& !strcmp (name, "foo"))
{
src = elf_rawdata (scn, NULL);
if (shdr->sh_size != 8 || src->d_off || src->d_size != 8) exit (4);
if (src == NULL || elf_rawdata (scn, src) != NULL) exit (5);
if ((dst = elf_newdata (scn)) == NULL) exit (6);
dst->d_buf = &val;
dst->d_size = 8;
dst->d_off = 0;
dst->d_type = ELF_T_SXWORD;
src->d_type = ELF_T_SXWORD;
if (elf64_xlatetom (dst, src, ELFDATA2MSB) == NULL) exit (7);
if (val != 0x7fff0000000)
exit (42);
elf_end (elf);
exit (0);
}
}
exit (8);
}
],,[AC_MSG_ERROR([libelf does not properly convert Elf64_Sxword quantities.
If you are using libelf-0.7.0, please use patches/libelf-0.7.0.patch.])],
[AC_MSG_WARN([Could not test whether libelf properly converts Elf64_Sxword quantities.
If you are using libelf-0.7.0 and your libelf is buggy, please use
patches/libelf-0.7.0.patch.])])
])
|
