199346a2ab
Our sigset_t definition hasn't been tied to our NSIG definition since we switched to uapi headers, so we can now fix it without breaking the LP32 ABI. The kernel uapi headers define and use _NSIG, so we need to have our scripts rename the kernel's definitions out of the way, then we can define _NSIG and NSIG in terms of the kernel's off-by-one value. Bug: 12938442 Change-Id: Ic7c86fd5be5ad1d822f7b2b1d88c8a0d70a1ac0f
151 lines
4.9 KiB
Python
151 lines
4.9 KiB
Python
# this module contains all the defaults used by the generation of cleaned-up headers
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# for the Bionic C library
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#
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import time, os, sys
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from utils import *
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# the list of supported architectures
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#
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kernel_archs = [ 'arm', 'arm64', 'mips', 'x86' ]
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# the list of include directories that belong to the kernel
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# tree. used when looking for sources...
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#
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kernel_dirs = [ "linux", "asm", "asm-generic", "mtd" ]
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# path to the directory containing the original kernel headers
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#
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kernel_original_path = os.path.normpath( find_program_dir() + '/../../../../external/kernel-headers/original' )
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# path to the default location of the cleaned-up headers
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#
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kernel_cleaned_path = os.path.normpath( find_program_dir() + '/..' )
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# a special value that is used to indicate that a given macro is known to be
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# undefined during optimization
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kCppUndefinedMacro = "<<<undefined>>>"
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# this is the set of known macros we want to totally optimize out from the
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# final headers
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kernel_known_macros = {
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"__KERNEL__": kCppUndefinedMacro,
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"__KERNEL_STRICT_NAMES":"1",
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"__CHECKER__": kCppUndefinedMacro,
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"__CHECK_ENDIAN__": kCppUndefinedMacro,
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"CONFIG_X86_32": "__i386__",
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"__EXPORTED_HEADERS__": "1",
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}
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# define to true if you want to remove all defined(CONFIG_FOO) tests
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# from the clean headers. testing shows that this is not strictly necessary
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# but just generates cleaner results
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kernel_remove_config_macros = True
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# maps an architecture to a set of default macros that would be provided by
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# toolchain preprocessor
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kernel_default_arch_macros = {
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"arm": {},
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"arm64": {},
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"mips": {"CONFIG_32BIT":"1"},
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"x86": {},
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}
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kernel_arch_token_replacements = {
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"arm": {},
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"arm64": {},
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"mips": {"off_t":"__kernel_off_t"},
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"x86": {},
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}
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# Replace tokens in the output according to this mapping
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kernel_token_replacements = {
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"asm": "__asm__",
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# The kernel usage of __unused for unused struct fields conflicts with the macro defined in <sys/cdefs.h>.
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"__unused": "__linux_unused",
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# The kernel's _NSIG/NSIG are one less than the userspace value, so we need to move them aside.
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"_NSIG": "_KERNEL__NSIG",
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"NSIG": "_KERNEL_NSIG",
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}
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# this is the set of known static inline functions that we want to keep
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# in the final ARM headers. this is only used to keep optimized byteswapping
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# static functions and stuff like that.
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kernel_known_arm_statics = set(
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[ "___arch__swab32", # asm-arm/byteorder.h
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]
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)
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kernel_known_arm64_statics = set(
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[
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]
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)
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kernel_known_mips_statics = set(
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[
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]
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)
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kernel_known_x86_statics = set(
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[ "___arch__swab32", # asm-x86/byteorder.h
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"___arch__swab64", # asm-x86/byteorder.h
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]
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)
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kernel_known_generic_statics = set(
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[ "__invalid_size_argument_for_IOC", # asm-generic/ioctl.h
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"__cmsg_nxthdr", # linux/socket.h
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"cmsg_nxthdr", # linux/socket.h
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"ipt_get_target",
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"ip6t_get_target",
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]
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)
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# this maps an architecture to the set of static inline functions that
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# we want to keep in the final headers
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#
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kernel_known_statics = {
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"arm" : kernel_known_arm_statics,
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"arm64" : kernel_known_arm64_statics,
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"mips" : kernel_known_mips_statics,
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"x86" : kernel_known_x86_statics,
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}
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# this is a list of macros which we want to specifically exclude from
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# the generated files.
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#
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kernel_ignored_macros = set(
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[ "MAXHOSTNAMELEN", # for some reason, Linux defines it to 64
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# while most of the BSD code expects this to be 256
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# so ignore the kernel-provided definition and
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# define it in the Bionic headers instead
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]
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)
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# this is the standard disclaimer
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#
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kernel_disclaimer = """\
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/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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*** To edit the content of this header, modify the corresponding
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*** source file (e.g. under external/kernel-headers/original/) then
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*** run bionic/libc/kernel/tools/update_all.py
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***
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*** Any manual change here will be lost the next time this script will
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*** be run. You've been warned!
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***
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****************************************************************************
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****************************************************************************/
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"""
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# This is the warning line that will be inserted every N-th line in the output
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kernel_warning = """\
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/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
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"""
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