Initial Contribution
diff --git a/libc/tools/bionic_utils.py b/libc/tools/bionic_utils.py
new file mode 100644
index 0000000..feb1561
--- /dev/null
+++ b/libc/tools/bionic_utils.py
@@ -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))