Initial Contribution
This commit is contained in:
The Android Open Source Project
287
libc/tools/bionic_utils.py
Normal file
287
libc/tools/bionic_utils.py
Normal file
@@ -0,0 +1,287 @@
|
||||
# common python utility routines for the Bionic tool scripts
|
||||
|
||||
import sys, os, commands, string
|
||||
|
||||
# support Bionic architectures, add new ones as appropriate
|
||||
#
|
||||
bionic_archs = [ "arm", "x86" ]
|
||||
|
||||
# basic debugging trace support
|
||||
# call D_setlevel to set the verbosity level
|
||||
# and D(), D2(), D3(), D4() to add traces
|
||||
#
|
||||
verbose = 1
|
||||
|
||||
def D(msg):
|
||||
global verbose
|
||||
if verbose > 0:
|
||||
print msg
|
||||
|
||||
def D2(msg):
|
||||
global verbose
|
||||
if verbose >= 2:
|
||||
print msg
|
||||
|
||||
def D3(msg):
|
||||
global verbose
|
||||
if verbose >= 3:
|
||||
print msg
|
||||
|
||||
def D4(msg):
|
||||
global verbose
|
||||
if verbose >= 4:
|
||||
print msg
|
||||
|
||||
def D_setlevel(level):
|
||||
global verbose
|
||||
verbose = level
|
||||
|
||||
|
||||
def find_dir_of(path):
|
||||
'''return the directory name of 'path', or "." if there is none'''
|
||||
# remove trailing slash
|
||||
if len(path) > 1 and path[-1] == '/':
|
||||
path = path[:-1]
|
||||
|
||||
# find parent directory name
|
||||
d = os.path.dirname(path)
|
||||
if d == "":
|
||||
return "."
|
||||
else:
|
||||
return d
|
||||
|
||||
# other stuff
|
||||
#
|
||||
#
|
||||
def find_file_from_upwards(from_path,target_file):
|
||||
"""find a file in the current directory or its parents. if 'from_path' is None,
|
||||
seach from the current program's directory"""
|
||||
path = from_path
|
||||
if path == None:
|
||||
path = find_dir_of(sys.argv[0])
|
||||
D("this script seems to be located in: %s" % path)
|
||||
|
||||
while 1:
|
||||
if path == "":
|
||||
path = "."
|
||||
|
||||
file = path + "/" + target_file
|
||||
D("probing "+file)
|
||||
|
||||
if os.path.isfile(file):
|
||||
D("found %s in %s" % (target_file, path))
|
||||
return file
|
||||
|
||||
if path == ".":
|
||||
break
|
||||
|
||||
path = os.path.dirname(path)
|
||||
|
||||
path = ""
|
||||
while 1:
|
||||
path = "../" + path
|
||||
file = path + target_file
|
||||
D("probing "+file)
|
||||
|
||||
if os.path.isfile(file):
|
||||
D("found %s in %s" % (target_file, path))
|
||||
return file
|
||||
|
||||
|
||||
return None
|
||||
|
||||
def find_bionic_root():
|
||||
'''find the root of the Bionic source tree. we check for the SYSCALLS.TXT file
|
||||
from the location of the current program's directory.'''
|
||||
|
||||
# note that we can't use find_file_from_upwards() since we can't use os.path.abspath
|
||||
# that's because in some cases the p4 client is in a symlinked directory, and this
|
||||
# function will return the real path instead, which later creates problems when
|
||||
# p4 commands are issued
|
||||
#
|
||||
file = find_file_from_upwards(None, "SYSCALLS.TXT")
|
||||
if file:
|
||||
return os.path.dirname(file)
|
||||
else:
|
||||
return None
|
||||
|
||||
def find_kernel_headers():
|
||||
"""try to find the directory containing the kernel headers for this machine"""
|
||||
status, version = commands.getstatusoutput( "uname -r" ) # get Linux kernel version
|
||||
if status != 0:
|
||||
D("could not execute 'uname -r' command properly")
|
||||
return None
|
||||
|
||||
# get rid of the "-xenU" suffix that is found in Xen virtual machines
|
||||
if len(version) > 5 and version[-5:] == "-xenU":
|
||||
version = version[:-5]
|
||||
|
||||
path = "/usr/src/linux-headers-" + version
|
||||
D("probing %s for kernel headers" % (path+"/include"))
|
||||
ret = os.path.isdir( path )
|
||||
if ret:
|
||||
D("found kernel headers in: %s" % (path + "/include"))
|
||||
return path
|
||||
return None
|
||||
|
||||
|
||||
# parser for the SYSCALLS.TXT file
|
||||
#
|
||||
class SysCallsTxtParser:
|
||||
def __init__(self):
|
||||
self.syscalls = []
|
||||
self.lineno = 0
|
||||
|
||||
def E(msg):
|
||||
print "%d: %s" % (self.lineno, msg)
|
||||
|
||||
def parse_line(self, line):
|
||||
pos_lparen = line.find('(')
|
||||
E = self.E
|
||||
if pos_lparen < 0:
|
||||
E("missing left parenthesis in '%s'" % line)
|
||||
return
|
||||
|
||||
pos_rparen = line.rfind(')')
|
||||
if pos_rparen < 0 or pos_rparen <= pos_lparen:
|
||||
E("missing or misplaced right parenthesis in '%s'" % line)
|
||||
return
|
||||
|
||||
return_type = line[:pos_lparen].strip().split()
|
||||
if len(return_type) < 2:
|
||||
E("missing return type in '%s'" % line)
|
||||
return
|
||||
|
||||
syscall_func = return_type[-1]
|
||||
return_type = string.join(return_type[:-1],' ')
|
||||
|
||||
pos_colon = syscall_func.find(':')
|
||||
if pos_colon < 0:
|
||||
syscall_name = syscall_func
|
||||
else:
|
||||
if pos_colon == 0 or pos_colon+1 >= len(syscall_func):
|
||||
E("misplaced colon in '%s'" % line)
|
||||
return
|
||||
syscall_name = syscall_func[pos_colon+1:]
|
||||
syscall_func = syscall_func[:pos_colon]
|
||||
|
||||
if pos_rparen > pos_lparen+1:
|
||||
syscall_params = line[pos_lparen+1:pos_rparen].split(',')
|
||||
params = string.join(syscall_params,',')
|
||||
else:
|
||||
syscall_params = []
|
||||
params = "void"
|
||||
|
||||
number = line[pos_rparen+1:].strip()
|
||||
if number == "stub":
|
||||
syscall_id = -1
|
||||
syscall_id2 = -1
|
||||
else:
|
||||
try:
|
||||
if number[0] == '#':
|
||||
number = number[1:].strip()
|
||||
numbers = string.split(number,',')
|
||||
syscall_id = int(numbers[0])
|
||||
syscall_id2 = syscall_id
|
||||
if len(numbers) > 1:
|
||||
syscall_id2 = int(numbers[1])
|
||||
except:
|
||||
E("invalid syscall number in '%s'" % line)
|
||||
return
|
||||
|
||||
t = { "id" : syscall_id,
|
||||
"id2" : syscall_id2,
|
||||
"name" : syscall_name,
|
||||
"func" : syscall_func,
|
||||
"params" : syscall_params,
|
||||
"decl" : "%-15s %s (%s);" % (return_type, syscall_func, params) }
|
||||
|
||||
self.syscalls.append(t)
|
||||
|
||||
def parse_file(self, file_path):
|
||||
D2("parse_file: %s" % file_path)
|
||||
fp = open(file_path)
|
||||
for line in fp.xreadlines():
|
||||
self.lineno += 1
|
||||
line = line.strip()
|
||||
if not line: continue
|
||||
if line[0] == '#': continue
|
||||
self.parse_line(line)
|
||||
|
||||
fp.close()
|
||||
|
||||
|
||||
class Output:
|
||||
def __init__(self,out=sys.stdout):
|
||||
self.out = out
|
||||
|
||||
def write(self,msg):
|
||||
self.out.write(msg)
|
||||
|
||||
def writeln(self,msg):
|
||||
self.out.write(msg)
|
||||
self.out.write("\n")
|
||||
|
||||
class StringOutput:
|
||||
def __init__(self):
|
||||
self.line = ""
|
||||
|
||||
def write(self,msg):
|
||||
self.line += msg
|
||||
D2("write '%s'" % msg)
|
||||
|
||||
def writeln(self,msg):
|
||||
self.line += msg + '\n'
|
||||
D2("write '%s\\n'"% msg)
|
||||
|
||||
def get(self):
|
||||
return self.line
|
||||
|
||||
|
||||
def create_file_path(path):
|
||||
dirs = []
|
||||
while 1:
|
||||
parent = os.path.dirname(path)
|
||||
if parent == "/":
|
||||
break
|
||||
dirs.append(parent)
|
||||
path = parent
|
||||
|
||||
dirs.reverse()
|
||||
for dir in dirs:
|
||||
#print "dir %s" % dir
|
||||
if os.path.isdir(dir):
|
||||
continue
|
||||
os.mkdir(dir)
|
||||
|
||||
def walk_source_files(paths,callback,args,excludes=[]):
|
||||
"""recursively walk a list of paths and files, only keeping the source files in directories"""
|
||||
for path in paths:
|
||||
if not os.path.isdir(path):
|
||||
callback(path,args)
|
||||
else:
|
||||
for root, dirs, files in os.walk(path):
|
||||
#print "w-- %s (ex: %s)" % (repr((root,dirs)), repr(excludes))
|
||||
if len(excludes):
|
||||
for d in dirs[:]:
|
||||
if d in excludes:
|
||||
dirs.remove(d)
|
||||
for f in files:
|
||||
r, ext = os.path.splitext(f)
|
||||
if ext in [ ".h", ".c", ".cpp", ".S" ]:
|
||||
callback( "%s/%s" % (root,f), args )
|
||||
|
||||
def cleanup_dir(path):
|
||||
"""create a directory if needed, and ensure that it is totally empty
|
||||
by removing any existing content in it"""
|
||||
if not os.path.exists(path):
|
||||
os.mkdir(path)
|
||||
else:
|
||||
for root, dirs, files in os.walk(path, topdown=False):
|
||||
if root.endswith("kernel_headers/"):
|
||||
# skip 'kernel_headers'
|
||||
continue
|
||||
for name in files:
|
||||
os.remove(os.path.join(root, name))
|
||||
for name in dirs:
|
||||
os.rmdir(os.path.join(root, name))
|
||||
Reference in New Issue
Block a user