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meta: scripts - relocation script adapted to support big-endian machines

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relocate_sdk.py was developed for little-endian architures and when tries
to install SDK for big-endian machines errors like below will be shown.
Error: struct.error: unpack requires a string argument of length 32. SDK could
not be set up. Relocate script failed. Abort!
Error: IOError: [Errno 22] Invalid argument. SDK could not be set up. Relocate
script failed. Abort!

To fix this, script is modified to support big-endian architecture.

(From OE-Core rev: 7d6f4b1373e4dfafc63702ef2426cd45100f18a3)

Signed-off-by: Sundeep KOKKONDA <sundeep.kokkonda@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Sundeep KOKKONDA 2022-04-05 15:28:19 +05:30 committed by Richard Purdie
parent 498f9c58c8
commit 601befb6c7
1 changed files with 16 additions and 9 deletions
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25
scripts/relocate_sdk.py
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@ -30,9 +30,16 @@ else:
old_prefix = re.compile(b("##DEFAULT_INSTALL_DIR##"))
def get_arch():
global endian_prefix
f.seek(0)
e_ident =f.read(16)
ei_mag0,ei_mag1_3,ei_class = struct.unpack("<B3sB11x", e_ident)
ei_mag0,ei_mag1_3,ei_class,ei_data,ei_version = struct.unpack("<B3sBBB9x", e_ident)
# ei_data = 1 for little-endian & 0 for big-endian
if ei_data == 1:
endian_prefix = '<'
else:
endian_prefix = '>'
if (ei_mag0 != 0x7f and ei_mag1_3 != "ELF") or ei_class == 0:
return 0
@ -51,11 +58,11 @@ def parse_elf_header():
if arch == 32:
# 32bit
hdr_fmt = "<HHILLLIHHHHHH"
hdr_fmt = endian_prefix + "HHILLLIHHHHHH"
hdr_size = 52
else:
# 64bit
hdr_fmt = "<HHIQQQIHHHHHH"
hdr_fmt = endian_prefix + "HHIQQQIHHHHHH"
hdr_size = 64
e_type, e_machine, e_version, e_entry, e_phoff, e_shoff, e_flags,\
@ -64,9 +71,9 @@ def parse_elf_header():
def change_interpreter(elf_file_name):
if arch == 32:
ph_fmt = "<IIIIIIII"
ph_fmt = endian_prefix + "IIIIIIII"
else:
ph_fmt = "<IIQQQQQQ"
ph_fmt = endian_prefix + "IIQQQQQQ"
""" look for PT_INTERP section """
for i in range(0,e_phnum):
@ -105,17 +112,17 @@ def change_interpreter(elf_file_name):
def change_dl_sysdirs(elf_file_name):
if arch == 32:
sh_fmt = "<IIIIIIIIII"
sh_fmt = endian_prefix + "IIIIIIIIII"
else:
sh_fmt = "<IIQQQQIIQQ"
sh_fmt = endian_prefix + "IIQQQQIIQQ"
""" read section string table """
f.seek(e_shoff + e_shstrndx * e_shentsize)
sh_hdr = f.read(e_shentsize)
if arch == 32:
sh_offset, sh_size = struct.unpack("<16xII16x", sh_hdr)
sh_offset, sh_size = struct.unpack(endian_prefix + "16xII16x", sh_hdr)
else:
sh_offset, sh_size = struct.unpack("<24xQQ24x", sh_hdr)
sh_offset, sh_size = struct.unpack(endian_prefix + "24xQQ24x", sh_hdr)
f.seek(sh_offset)
sh_strtab = f.read(sh_size)