Check the host platform to determine logging channel to test in TestRegisters.py

[flackr]

Summary

Checks the host platform to determine logging channel to test in TestRegisters.py as the logging runs host side.

[clayborg]

Looks good.

lldb/trunk/test/functionalities/register/TestRegisters.py

class RegisterCommandsTestCase(TestBase):
 
     def remove_log(self):
         """ Remove the temporary log file generated by some tests."""
         if os.path.exists(self.log_file):
             os.remove(self.log_file)
 
     # platform specific logging of the specified category
     def log_enable(self, category):
+        # This intentionally checks the host platform rather than the target
+        # platform as logging is host side.
         self.platform = ""
-        if self.platformIsDarwin():
+        if sys.platform.startswith("darwin"):
             self.platform = "" # TODO: add support for "log enable darwin registers"
 
-        if self.getPlatform() == "freebsd":
+        if sys.platform.startswith("freebsd"):
             self.platform = "freebsd"
 
-        if self.getPlatform() == "linux":
+        if sys.platform.startswith("linux"):
             self.platform = "linux"
 
         if self.platform != "":
             self.log_file = os.path.join(os.getcwd(), 'TestRegisters.log')
             self.runCmd("log enable " + self.platform + " " + str(category) + " registers -v -f " + self.log_file, RUN_SUCCEEDED)
             if not self.has_teardown:
                 self.has_teardown = True
                 self.addTearDownHook(self.remove_log)