1 files changed, 111 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/lang/cpp/stl/TestStdCXXDisassembly.py b/packages/Python/lldbsuite/test/lang/cpp/stl/TestStdCXXDisassembly.py
new file mode 100644
index 000000000000..d7435c467274
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/cpp/stl/TestStdCXXDisassembly.py
@@ -0,0 +1,111 @@
+"""
+Test the lldb disassemble command on lib stdc++.
+"""
+
+from __future__ import print_function
+
+
+
+import unittest2
+import os, time
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+class StdCXXDisassembleTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line number to break inside main().
+        self.line = line_number('main.cpp', '// Set break point at this line.')
+
+    # rdar://problem/8504895
+    # Crash while doing 'disassemble -n "-[NSNumber descriptionWithLocale:]"
+    @unittest2.skipIf(TestBase.skipLongRunningTest(), "Skip this long running test")
+    def test_stdcxx_disasm(self):
+        """Do 'disassemble' on each and every 'Code' symbol entry from the std c++ lib."""
+        self.build()
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # rdar://problem/8543077
+        # test/stl: clang built binaries results in the breakpoint locations = 3,
+        # is this a problem with clang generated debug info?
+        #
+        # Break on line 13 of main.cpp.
+        lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # Now let's get the target as well as the process objects.
+        target = self.dbg.GetSelectedTarget()
+        process = target.GetProcess()
+
+        # The process should be in a 'stopped' state.
+        self.expect(str(process), STOPPED_DUE_TO_BREAKPOINT, exe=False,
+            substrs = ["a.out",
+                       "stopped"])
+
+        # Disassemble the functions on the call stack.
+        self.runCmd("thread backtrace")
+        thread = process.GetThreadAtIndex(0)
+        depth = thread.GetNumFrames()
+        for i in range(depth - 1):
+            frame = thread.GetFrameAtIndex(i)
+            function = frame.GetFunction()
+            if function.GetName():
+                self.runCmd("disassemble -n '%s'" % function.GetName())
+
+        lib_stdcxx = "FAILHORRIBLYHERE"
+        # Iterate through the available modules, looking for stdc++ library...
+        for i in range(target.GetNumModules()):
+            module = target.GetModuleAtIndex(i)
+            fs = module.GetFileSpec()
+            if (fs.GetFilename().startswith("libstdc++") or fs.GetFilename().startswith("libc++")):
+                lib_stdcxx = str(fs)
+                break
+
+        # At this point, lib_stdcxx is the full path to the stdc++ library and
+        # module is the corresponding SBModule.
+
+        self.expect(lib_stdcxx, "Libraray StdC++ is located", exe=False,
+            substrs = ["lib"])
+
+        self.runCmd("image dump symtab '%s'" % lib_stdcxx)
+        raw_output = self.res.GetOutput()
+        # Now, look for every 'Code' symbol and feed its load address into the
+        # command: 'disassemble -s load_address -e end_address', where the
+        # end_address is taken from the next consecutive 'Code' symbol entry's
+        # load address.
+        #
+        # The load address column comes after the file address column, with both
+        # looks like '0xhhhhhhhh', i.e., 8 hexadecimal digits.
+        codeRE = re.compile(r"""
+                             \ Code\ {9}      # ' Code' followed by 9 SPCs,
+                             0x[0-9a-f]{16}   # the file address column, and
+                             \                # a SPC, and
+                             (0x[0-9a-f]{16}) # the load address column, and
+                             .*               # the rest.
+                             """, re.VERBOSE)
+        # Maintain a start address variable; if we arrive at a consecutive Code
+        # entry, then the load address of the that entry is fed as the end
+        # address to the 'disassemble -s SA -e LA' command.
+        SA = None
+        for line in raw_output.split(os.linesep):
+            match = codeRE.search(line)
+            if match:
+                LA = match.group(1)
+                if self.TraceOn():
+                    print("line:", line)
+                    print("load address:", LA)
+                    print("SA:", SA)
+                if SA and LA:
+                    if int(LA, 16) > int(SA, 16):
+                        self.runCmd("disassemble -s %s -e %s" % (SA, LA))
+                SA = LA
+            else:
+                # This entry is not a Code entry.  Reset SA = None.
+                SA = None