I was trying a ramdisk with busybox compiled with uclibc(big
emndian) for big endian mips IDT board.
but while exec'ing it fails in identifying the ELF HEADER of
binaries , though it reads correctly ELFMAG field.
in fs/binfmt_elf.c
if (memcmp(elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
goto out;
/****above passes but these following tests fails*****/
if (elf_ex.e_type != ET_EXEC && elf_ex.e_type !=
ET_DYN)
goto out;
if (!elf_check_arch(&elf_ex))
goto out;
ET_EXEC is 0x2 and EM_MIPS is 0x8 respectively.
on target it reads e_type as 0x200 and e_machine as 0x800
now on my host after mount -o loop the ramdisk and taking hexdump
of binary give me
# hexdump ./sh | more
0000000 457f 464c 0201 0001 0000 0000 0000 0000
0000010 0200 0800 0000 0100 4000 b000 0000 3400
here in second line the et_type and e_machine field of
elf header is stored in little endian order.
for more clarity # hexdump -c ./sh gives
0000000 177 E L F 001 002 001 \0 \0 \0 \0 \0 \0 \0
\0 \0
0000010 \0 002 \0 \b \0 \0 \0 001 \0 @ \0 ° \0 \0
\0 4
am i thinking in right direction that my uclibc is not generating
correct binaries for big endian mips?
should i give a try with another lib package?
Best Rergards,
Atul....
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