f5a71b49be
Currently the substrs parameter takes a list of strings that need to be found but the ordering isn't checked. D73766 might change that so this changes a several tests so that the order of the strings in the substrs list is in the order in which they appear in the output.
120 lines
4.5 KiB
Python
120 lines
4.5 KiB
Python
"""
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Test the lldb disassemble command on lib stdc++.
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"""
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from __future__ import print_function
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import unittest2
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import os
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import lldb
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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from lldbsuite.test.decorators import *
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class StdCXXDisassembleTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break inside main().
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self.line = line_number('main.cpp', '// Set break point at this line.')
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@skipIfWindows
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@expectedFailureNetBSD
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def test_stdcxx_disasm(self):
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"""Do 'disassemble' on each and every 'Code' symbol entry from the std c++ lib."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# rdar://problem/8543077
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# test/stl: clang built binaries results in the breakpoint locations = 3,
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# is this a problem with clang generated debug info?
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#
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# Break on line 13 of main.cpp.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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# Now let's get the target as well as the process objects.
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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# The process should be in a 'stopped' state.
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self.expect(
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str(process),
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STOPPED_DUE_TO_BREAKPOINT,
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exe=False,
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substrs=[
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"stopped",
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"a.out",
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])
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# Disassemble the functions on the call stack.
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self.runCmd("thread backtrace")
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thread = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertIsNotNone(thread)
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depth = thread.GetNumFrames()
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for i in range(depth - 1):
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frame = thread.GetFrameAtIndex(i)
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function = frame.GetFunction()
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if function.GetName():
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self.runCmd("disassemble -n '%s'" % function.GetName())
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lib_stdcxx = "FAILHORRIBLYHERE"
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# Iterate through the available modules, looking for stdc++ library...
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for i in range(target.GetNumModules()):
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module = target.GetModuleAtIndex(i)
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fs = module.GetFileSpec()
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if (fs.GetFilename().startswith("libstdc++")
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or fs.GetFilename().startswith("libc++")):
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lib_stdcxx = str(fs)
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break
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# At this point, lib_stdcxx is the full path to the stdc++ library and
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# module is the corresponding SBModule.
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self.expect(lib_stdcxx, "Libraray StdC++ is located", exe=False,
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substrs=["lib"])
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self.runCmd("image dump symtab '%s'" % lib_stdcxx)
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raw_output = self.res.GetOutput()
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# Now, look for every 'Code' symbol and feed its load address into the
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# command: 'disassemble -s load_address -e end_address', where the
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# end_address is taken from the next consecutive 'Code' symbol entry's
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# load address.
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#
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# The load address column comes after the file address column, with both
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# looks like '0xhhhhhhhh', i.e., 8 hexadecimal digits.
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codeRE = re.compile(r"""
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\ Code\ {9} # ' Code' followed by 9 SPCs,
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0x[0-9a-f]{16} # the file address column, and
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\ # a SPC, and
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(0x[0-9a-f]{16}) # the load address column, and
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.* # the rest.
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""", re.VERBOSE)
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# Maintain a start address variable; if we arrive at a consecutive Code
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# entry, then the load address of the that entry is fed as the end
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# address to the 'disassemble -s SA -e LA' command.
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SA = None
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for line in raw_output.split(os.linesep):
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match = codeRE.search(line)
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if match:
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LA = match.group(1)
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if self.TraceOn():
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print("line:", line)
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print("load address:", LA)
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print("SA:", SA)
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if SA and LA:
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if int(LA, 16) > int(SA, 16):
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self.runCmd("disassemble -s %s -e %s" % (SA, LA))
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SA = LA
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else:
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# This entry is not a Code entry. Reset SA = None.
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SA = None
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