fc2693110e
Make the scripts use external/kernel-headers/original by default.
clean_header.py: Document -k<path>, add -d<path>
find_headers.py: Make kernel config files optional
update_all.py: Allow setting the path to kernel headers on the command-line
update_all.py: Better formatting of output on ttys
update_all.py: Automatically perform "git add/rm" on affected files.
SYSCALLS.TXT: Fix typo in __socketcall definition.
checksyscalls.py: Add support for superH architecture in the checks.
gensyscalls.py: Automatically perform "git add/rm" on affected files.
cpp.py: Fixed a bug that prevented certain type definitions to
be kept in the generated clean header (e.g.
struct ethtool_drvinfo in <linux/ethtool.h>)
All scripts will use the content of external/kernel-headers/original by default now.
The generated code removes all empty lines and trailing whitespace. This is useful
to ensure a unified output even if we change the parser again in the future.
The top-level disclaimer has been edited with update instructions to regenerate
the headers when needed.
Also, a warning is now inserted every 8th line in the final output:
/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
Changes under kernel/arch-arm and kernel/arch-x86 should correspond to whitespace
differences and additionnal struct definitions that were missed by the previous
parser implementation.
Change-Id: Icd1c056bacd766759f3e9b7bb5d63a246f3d656a
WARNING: If you run these script, do not submit the result to gerrit for now.
It seems there are discrepancies between the content of original headers
and those currently commited under bionic/libc/kernel/.
(This problem is the main motivation to insert the warning repeatedly).
Current list of issues:
- Missing SuperH headers (i.e. external/kernel-headers/original/asm-sh)
134 lines
4.5 KiB
Python
134 lines
4.5 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', 'x86', 'sh' ]
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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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}
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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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"x86": {"__i386__": "1"},
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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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}
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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_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_sh_statics = set(
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[ "___arch__swab16", # asm-sh/byteorder.h
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"___arch__swab32", # asm-sh/byteorder.h
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"___arch__swab64", # asm-sh/byteorder.h
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"__FD_ZERO", # asm-sh/posix_types_32/64.h
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"__FD_SET", # asm-sh/posix_types_32/64.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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"x86" : kernel_known_x86_statics,
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"sh" : kernel_known_sh_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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