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syscalls: Scan multiple folders to build complete syscall list

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Previously the syscall list was generated only from the include
folder. This is a limitation when the application tries to create
system calls. This patch create a simple way to include these
new syscalls without the application touching the kernel.

This can be enabled by a Kconfig CONFIG_APPLICATION_DEFINED_SYSCALL.
Once enabled the application source directory will be scanned to
find all application defined syscalls.

Signed-off-by: Adithya Baglody <adithya.nagaraj.baglody@intel.com>
This commit is contained in:
Adithya Baglody 2018-07-02 14:59:19 +05:30 • committed by Andrew Boie
commit e67720bbf2
3 changed files with 33 additions and 18 deletions
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35
scripts/parse_syscalls.py
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@ -94,27 +94,28 @@ def analyze_fn(match_group, fn):
return (fn, handler, invocation, sys_id, table_entry)
def analyze_headers(base_path):
def analyze_headers(multiple_directories):
ret = []
for root, dirs, files in os.walk(base_path):
for fn in files:
for base_path in multiple_directories:
for root, dirs, files in os.walk(base_path):
for fn in files:
# toolchain/common.h has the definition of __syscall which we
# don't want to trip over
path = os.path.join(root, fn)
if not fn.endswith(".h") or path.endswith(os.path.join(os.sep, 'toolchain', 'common.h')):
continue
# toolchain/common.h has the definition of __syscall which we
# don't want to trip over
path = os.path.join(root, fn)
if not fn.endswith(".h") or path.endswith(os.path.join(os.sep, 'toolchain', 'common.h')):
continue
with open(path, "r", encoding="utf-8") as fp:
try:
result = [analyze_fn(mo.groups(), fn)
for mo in api_regex.finditer(fp.read())]
except Exception:
sys.stderr.write("While parsing %s\n" % fn)
raise
with open(path, "r", encoding="utf-8") as fp:
try:
result = [analyze_fn(mo.groups(), fn)
for mo in api_regex.finditer(fp.read())]
except Exception:
sys.stderr.write("While parsing %s\n" % fn)
raise
ret.extend(result)
ret.extend(result)
return ret
@ -125,7 +126,7 @@ def parse_args():
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument("-i", "--include", required=True,
parser.add_argument("-i", "--include", required=True, action='append',
help="Base include directory")
parser.add_argument(
"-j", "--json-file", required=True,