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# this module contains all the defaults used by the generation of cleaned-up headers
# for the Bionic C library
#
import time, os, sys
from utils import *
# the list of supported architectures
kernel_archs = [ 'arm', 'arm64', 'mips', 'x86' ]
# the list of include directories that belong to the kernel
# tree. used when looking for sources...
kernel_dirs = [ "linux", "asm", "asm-generic", "mtd" ]
# path to the directory containing the original kernel headers
kernel_original_path = os.path.normpath( find_program_dir() + '/../../../../external/kernel-headers/original' )
# path to the default location of the cleaned-up headers
kernel_cleaned_path = os.path.normpath( find_program_dir() + '/..' )
# a special value that is used to indicate that a given macro is known to be
# undefined during optimization
kCppUndefinedMacro = "<<<undefined>>>"
# this is the set of known macros we want to totally optimize out from the
# final headers
kernel_known_macros = {
"__KERNEL__": kCppUndefinedMacro,
"__KERNEL_STRICT_NAMES":"1",
"__CHECKER__": kCppUndefinedMacro,
"__CHECK_ENDIAN__": kCppUndefinedMacro,
"CONFIG_64BIT": "__LP64__",
"CONFIG_X86_32": "__i386__",
"__EXPORTED_HEADERS__": "1",
}
# define to true if you want to remove all defined(CONFIG_FOO) tests
# from the clean headers. testing shows that this is not strictly necessary
# but just generates cleaner results
kernel_remove_config_macros = True
# maps an architecture to a set of default macros that would be provided by
# toolchain preprocessor
kernel_default_arch_macros = {
"arm": {"__ARMEB__": kCppUndefinedMacro, "__ARM_EABI__": "1"},
"arm64": {},
"mips": {"__MIPSEB__": kCppUndefinedMacro,
"__MIPSEL__": "1",
"CONFIG_32BIT": "_ABIO32",
"CONFIG_CPU_LITTLE_ENDIAN": "1",
"__SANE_USERSPACE_TYPES__": "1",},
"x86": {},
}
kernel_arch_token_replacements = {
"arm": {},
"arm64": {},
"mips": {"off_t":"__kernel_off_t"},
"x86": {},
}
# Replace tokens in the output according to this mapping
kernel_token_replacements = {
"asm": "__asm__",
# The kernel usage of __unused for unused struct fields conflicts with the macro defined in <sys/cdefs.h>.
"__unused": "__linux_unused",
# The kernel's _NSIG/NSIG are one less than the userspace value, so we need to move them aside.
"_NSIG": "_KERNEL__NSIG",
"NSIG": "_KERNEL_NSIG",
# The kernel's SIGRTMIN/SIGRTMAX are absolute limits; userspace steals a few.
"SIGRTMIN": "__SIGRTMIN",
"SIGRTMAX": "__SIGRTMAX",
}
# this is the set of known static inline functions that we want to keep
# in the final ARM headers. this is only used to keep optimized byteswapping
# static functions and stuff like that.
# TODO: this isn't working!
kernel_known_arm_statics = set(
[ "___arch__swab32", # asm-arm/byteorder.h
]
)
kernel_known_arm64_statics = set(
[
]
)
kernel_known_mips_statics = set(
[
]
)
kernel_known_x86_statics = set(
[ "___arch__swab32", # asm-x86/byteorder.h
"___arch__swab64", # asm-x86/byteorder.h
]
)
kernel_known_generic_statics = set(
[
"ipt_get_target", # uapi/linux/netfilter_ipv4/ip_tables.h
"ip6t_get_target", # uapi/linux/netfilter_ipv6/ip6_tables.h
]
)
# this maps an architecture to the set of static inline functions that
# we want to keep in the final headers
#
kernel_known_statics = {
"arm" : kernel_known_arm_statics,
"arm64" : kernel_known_arm64_statics,
"mips" : kernel_known_mips_statics,
"x86" : kernel_known_x86_statics,
}
# this is a list of macros which we want to specifically exclude from
# the generated files.
#
kernel_ignored_macros = set(
[ "MAXHOSTNAMELEN", # for some reason, Linux defines it to 64
# while most of the BSD code expects this to be 256
# so ignore the kernel-provided definition and
# define it in the Bionic headers instead
]
)
# this is the standard disclaimer
#
kernel_disclaimer = """\
/****************************************************************************
****************************************************************************
***
*** This header was automatically generated from a Linux kernel header
*** of the same name, to make information necessary for userspace to
*** call into the kernel available to libc. It contains only constants,
*** structures, and macros generated from the original header, and thus,
*** contains no copyrightable information.
***
*** To edit the content of this header, modify the corresponding
*** source file (e.g. under external/kernel-headers/original/) then
*** run bionic/libc/kernel/tools/update_all.py
***
*** Any manual change here will be lost the next time this script will
*** be run. You've been warned!
***
****************************************************************************
****************************************************************************/
"""
# This is the warning line that will be inserted every N-th line in the output
kernel_warning = """\
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
"""
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