libc: Update auto-gen scripts
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)
diff --git a/libc/kernel/tools/defaults.py b/libc/kernel/tools/defaults.py
index 5e9d6770..2bee4ec 100644
--- a/libc/kernel/tools/defaults.py
+++ b/libc/kernel/tools/defaults.py
@@ -16,7 +16,11 @@
# path to the directory containing the original kernel headers
#
-kernel_original_path = os.path.normpath( find_program_dir() + '/../original' )
+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
@@ -112,6 +116,18 @@
*** 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 */
+"""