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Revert "[Dexter] Add DexLimitSteps command and ConditionalController" 

This reverts commit 81e836a5a6.

Accidentally committed a diff file.
This commit is contained in:
Tom Weaver 2020-06-03 12:28:26 +01:00
parent a48c76cf43
commit 05eabb5204
18 changed files with 41 additions and 1176 deletions
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@ -1,712 +0,0 @@
diff --git a/debuginfo-tests/dexter/Commands.md b/debuginfo-tests/dexter/Commands.md
index c30a0d7214c..2e2fecfed92 100644
--- a/debuginfo-tests/dexter/Commands.md
+++ b/debuginfo-tests/dexter/Commands.md
@@ -173,6 +173,34 @@ Expect the source line this is found on will never be stepped on to.
[TODO]
+----
+## DexLimitSteps
+ DexLimitSteps(expr, *values [, **from_line=1],[,**to_line=Max]
+ [,**on_line])
+
+ Args:
+ expr (str): variable or value to compare.
+
+ Arg list:
+ values (str): At least one potential value the expr may evaluate to.
+
+ Keyword args:
+ from_line (int): Define the start of the limited step range.
+ to_line (int): Define the end of the limited step range.
+ on_line (int): Define a range with length 1 starting and ending on the
+ same line.
+
+### Description
+Define a limited stepping range that is predicated on a condition. When
+'(expr) == (values[n])', set a range of temporary, unconditional break points within
+the test file defined by the range from_line and to_line or on_line.
+
+The condition is only evaluated on the line 'from_line' or 'on_line'. If the
+condition is not true at the start of the range, the whole range is ignored.
+
+DexLimitSteps commands are useful for reducing the amount of steps gathered in
+large test cases that would normally take much longer to complete.
+
----
## DexLabel
DexLabel(name)
diff --git a/debuginfo-tests/dexter/dex/command/ParseCommand.py b/debuginfo-tests/dexter/dex/command/ParseCommand.py
index 4cc9ae12592..8246ea9e3cf 100644
--- a/debuginfo-tests/dexter/dex/command/ParseCommand.py
+++ b/debuginfo-tests/dexter/dex/command/ParseCommand.py
@@ -24,6 +24,7 @@ from dex.command.commands.DexExpectStepOrder import DexExpectStepOrder
from dex.command.commands.DexExpectWatchType import DexExpectWatchType
from dex.command.commands.DexExpectWatchValue import DexExpectWatchValue
from dex.command.commands.DexLabel import DexLabel
+from dex.command.commands.DexLimitSteps import DexLimitSteps
from dex.command.commands.DexUnreachable import DexUnreachable
from dex.command.commands.DexWatch import DexWatch
from dex.utils import Timer
@@ -42,6 +43,7 @@ def _get_valid_commands():
DexExpectWatchType.get_name() : DexExpectWatchType,
DexExpectWatchValue.get_name() : DexExpectWatchValue,
DexLabel.get_name() : DexLabel,
+ DexLimitSteps.get_name() : DexLimitSteps,
DexUnreachable.get_name() : DexUnreachable,
DexWatch.get_name() : DexWatch
}
diff --git a/debuginfo-tests/dexter/dex/command/commands/DexLimitSteps.py b/debuginfo-tests/dexter/dex/command/commands/DexLimitSteps.py
new file mode 100644
index 00000000000..d66401b5599
--- /dev/null
+++ b/debuginfo-tests/dexter/dex/command/commands/DexLimitSteps.py
@@ -0,0 +1,54 @@
+# DExTer : Debugging Experience Tester
+# ~~~~~~ ~ ~~ ~ ~~
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+"""A Command that enables test writers to specify a limited number of break
+points using an start condition and range.
+"""
+
+from dex.command.CommandBase import CommandBase
+
+class DexLimitSteps(CommandBase):
+ def __init__(self, *args, **kwargs):
+ self.expression = args[0]
+ self.values = [str(arg) for arg in args[1:]]
+ try:
+ on_line = kwargs.pop('on_line')
+ self.from_line = on_line
+ self.to_line = on_line
+ except KeyError:
+ self.from_line = kwargs.pop('from_line', 1)
+ self.to_line = kwargs.pop('to_line', 999999)
+ if kwargs:
+ raise TypeError('unexpected named args: {}'.format(
+ ', '.join(kwargs)))
+ super(DexLimitSteps, self).__init__()
+
+ def resolve_label(self, label_line_pair):
+ label, lineno = label_line_pair
+ if isinstance(self.from_line, str):
+ if self.from_line == label:
+ self.from_line = lineno
+ if isinstance(self.to_line, str):
+ if self.to_line == label:
+ self.to_line = lineno
+
+ def has_labels(self):
+ return len(self.get_label_args()) > 0
+
+ def get_label_args(self):
+ return [label for label in (self.from_line, self.to_line)
+ if isinstance(label, str)]
+
+ def eval(self):
+ raise NotImplementedError('DexLimitSteps commands cannot be evaled.')
+
+ @staticmethod
+ def get_name():
+ return __class__.__name__
+
+ @staticmethod
+ def get_subcommands() -> dict:
+ return None
diff --git a/debuginfo-tests/dexter/dex/debugger/DebuggerBase.py b/debuginfo-tests/dexter/dex/debugger/DebuggerBase.py
index 2261396b94b..12f4f4ab7a0 100644
--- a/debuginfo-tests/dexter/dex/debugger/DebuggerBase.py
+++ b/debuginfo-tests/dexter/dex/debugger/DebuggerBase.py
@@ -120,6 +120,14 @@ class DebuggerBase(object, metaclass=abc.ABCMeta):
def add_breakpoint(self, file_, line):
pass
+ @abc.abstractmethod
+ def add_conditional_breakpoint(self, file_, line, condition):
+ pass
+
+ @abc.abstractmethod
+ def delete_conditional_breakpoint(self, file_, line, condition):
+ pass
+
@abc.abstractmethod
def launch(self):
pass
diff --git a/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py
new file mode 100644
index 00000000000..4e4327b53f8
--- /dev/null
+++ b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py
@@ -0,0 +1,127 @@
+# DExTer : Debugging Experience Tester
+# ~~~~~~ ~ ~~ ~ ~~
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+"""Conditional Controller Class for DExTer.-"""
+
+
+import os
+import time
+from collections import defaultdict
+from itertools import chain
+
+from dex.debugger.DebuggerControllers.ControllerHelpers import in_source_file, update_step_watches
+from dex.debugger.DebuggerControllers.DebuggerControllerBase import DebuggerControllerBase
+from dex.debugger.DebuggerBase import DebuggerBase
+from dex.utils.Exceptions import DebuggerException
+
+
+class ConditionalBpRange:
+ """Represents a conditional range of breakpoints within a source file descending from
+ one line to another."""
+
+ def __init__(self, expression: str, path: str, range_from: int, range_to: int, values: list):
+ self.expression = expression
+ self.path = path
+ self.range_from = range_from
+ self.range_to = range_to
+ self.conditional_values = values
+
+ def get_conditional_expression_list(self):
+ conditional_list = []
+ for value in self.conditional_values:
+ # (<expression>) == (<value>)
+ conditional_expression = '({}) == ({})'.format(self.expression, value)
+ conditional_list.append(conditional_expression)
+ return conditional_list
+
+
+class ConditionalController(DebuggerControllerBase):
+ def __init__(self, context, step_collection):
+ self.context = context
+ self.step_collection = step_collection
+ self._conditional_bps = None
+ self._watches = set()
+ self._step_index = 0
+ self._build_conditional_bps()
+ self._path_and_line_to_conditional_bp = defaultdict(list)
+ self._pause_between_steps = context.options.pause_between_steps
+ self._max_steps = context.options.max_steps
+
+ def _build_conditional_bps(self):
+ commands = self.step_collection.commands
+ self._conditional_bps = []
+ try:
+ limit_commands = commands['DexLimitSteps']
+ for lc in limit_commands:
+ conditional_bp = ConditionalBpRange(
+ lc.expression,
+ lc.path,
+ lc.from_line,
+ lc.to_line,
+ lc.values)
+ self._conditional_bps.append(conditional_bp)
+ except KeyError:
+ raise DebuggerException('Missing DexLimitSteps commands, cannot conditionally step.')
+
+ def _set_conditional_bps(self):
+ # When we break in the debugger we need a quick and easy way to look up
+ # which conditional bp we've breaked on.
+ for cbp in self._conditional_bps:
+ conditional_bp_list = self._path_and_line_to_conditional_bp[(cbp.path, cbp.range_from)]
+ conditional_bp_list.append(cbp)
+
+ # Set break points only on the first line of any conditional range, we'll set
+ # more break points for a range when the condition is satisfied.
+ for cbp in self._conditional_bps:
+ for cond_expr in cbp.get_conditional_expression_list():
+ self.debugger.add_conditional_breakpoint(cbp.path, cbp.range_from, cond_expr)
+
+ def _conditional_met(self, cbp):
+ for cond_expr in cbp.get_conditional_expression_list():
+ valueIR = self.debugger.evaluate_expression(cond_expr)
+ if valueIR.type_name == 'bool' and valueIR.value == 'true':
+ return True
+ return False
+
+ def _run_debugger_custom(self):
+ # TODO: Add conditional and unconditional breakpoint support to dbgeng.
+ if self.debugger.get_name() == 'dbgeng':
+ raise DebuggerException('DexLimitSteps commands are not supported by dbgeng')
+
+ self.step_collection.clear_steps()
+ self._set_conditional_bps()
+
+ for command_obj in chain.from_iterable(self.step_collection.commands.values()):
+ self._watches.update(command_obj.get_watches())
+
+ self.debugger.launch()
+ time.sleep(self._pause_between_steps)
+ while not self.debugger.is_finished:
+ while self.debugger.is_running:
+ pass
+
+ step_info = self.debugger.get_step_info(self._watches, self._step_index)
+ if step_info.current_frame:
+ self._step_index += 1
+ update_step_watches(step_info, self._watches, self.step_collection.commands)
+ self.step_collection.new_step(self.context, step_info)
+
+ loc = step_info.current_location
+ conditional_bp_key = (loc.path, loc.lineno)
+ if conditional_bp_key in self._path_and_line_to_conditional_bp:
+
+ conditional_bps = self._path_and_line_to_conditional_bp[conditional_bp_key]
+ for cbp in conditional_bps:
+ if self._conditional_met(cbp):
+ # Unconditional range should ignore first line as that's the
+ # conditional bp we just hit and should be inclusive of final line
+ for line in range(cbp.range_from + 1, cbp.range_to + 1):
+ self.debugger.add_conditional_breakpoint(cbp.path, line, condition='')
+
+ # Clear any uncondtional break points at this loc.
+ self.debugger.delete_conditional_breakpoint(file_=loc.path, line=loc.lineno, condition='')
+ self.debugger.go()
+ time.sleep(self._pause_between_steps)
diff --git a/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ControllerHelpers.py b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ControllerHelpers.py
new file mode 100644
index 00000000000..adac7674aff
--- /dev/null
+++ b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ControllerHelpers.py
@@ -0,0 +1,37 @@
+# DExTer : Debugging Experience Tester
+# ~~~~~~ ~ ~~ ~ ~~
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+import os
+from itertools import chain
+
+def in_source_file(source_files, step_info):
+ if not step_info.current_frame:
+ return False
+ if not step_info.current_location.path:
+ return False
+ if not os.path.exists(step_info.current_location.path):
+ return False
+ return any(os.path.samefile(step_info.current_location.path, f) \
+ for f in source_files)
+
+def update_step_watches(step_info, watches, commands):
+ watch_cmds = ['DexUnreachable', 'DexExpectStepOrder']
+ towatch = chain.from_iterable(commands[x]
+ for x in watch_cmds
+ if x in commands)
+ try:
+ # Iterate over all watches of the types named in watch_cmds
+ for watch in towatch:
+ loc = step_info.current_location
+ if (os.path.exists(loc.path)
+ and os.path.samefile(watch.path, loc.path)
+ and watch.lineno == loc.lineno):
+ result = watch.eval(step_info)
+ step_info.watches.update(result)
+ break
+ except KeyError:
+ pass
diff --git a/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DebuggerControllerBase.py b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DebuggerControllerBase.py
index ff98baa2d0e..87b13fc7f3a 100644
--- a/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DebuggerControllerBase.py
+++ b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DebuggerControllerBase.py
@@ -4,7 +4,7 @@
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-"""Default class for controlling debuggers."""
+"""Abstract Base class for controlling debuggers."""
import abc
diff --git a/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DefaultController.py b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DefaultController.py
index 0077a19e601..c41a3eff0d3 100644
--- a/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DefaultController.py
+++ b/debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DefaultController.py
@@ -4,61 +4,37 @@
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-"""Base class for controlling debuggers."""
+"""Default class for controlling debuggers."""
from itertools import chain
import os
import time
from dex.debugger.DebuggerControllers.DebuggerControllerBase import DebuggerControllerBase
-from dex.utils.Exceptions import DebuggerException
+from dex.debugger.DebuggerControllers.ControllerHelpers import in_source_file, update_step_watches
+from dex.utils.Exceptions import DebuggerException, LoadDebuggerException
class DefaultController(DebuggerControllerBase):
def __init__(self, context, step_collection):
self.context = context
self.step_collection = step_collection
+ self.source_files = self.context.options.source_files
self.watches = set()
self.step_index = 0
- def _update_step_watches(self, step_info):
- watch_cmds = ['DexUnreachable', 'DexExpectStepOrder']
- towatch = chain.from_iterable(self.step_collection.commands[x]
- for x in watch_cmds
- if x in self.step_collection.commands)
- try:
- # Iterate over all watches of the types named in watch_cmds
- for watch in towatch:
- loc = step_info.current_location
- if (os.path.exists(loc.path)
- and os.path.samefile(watch.path, loc.path)
- and watch.lineno == loc.lineno):
- result = watch.eval(step_info)
- step_info.watches.update(result)
- break
- except KeyError:
- pass
-
def _break_point_all_lines(self):
for s in self.context.options.source_files:
with open(s, 'r') as fp:
num_lines = len(fp.readlines())
for line in range(1, num_lines + 1):
- self.debugger.add_breakpoint(s, line)
-
- def _in_source_file(self, step_info):
- if not step_info.current_frame:
- return False
- if not step_info.current_location.path:
- return False
- if not os.path.exists(step_info.current_location.path):
- return False
- return any(os.path.samefile(step_info.current_location.path, f) \
- for f in self.context.options.source_files)
+ try:
+ self.debugger.add_breakpoint(s, line)
+ except DebuggerException:
+ raise LoadDebuggerException(DebuggerException.msg)
def _run_debugger_custom(self):
self.step_collection.debugger = self.debugger.debugger_info
self._break_point_all_lines()
-
self.debugger.launch()
for command_obj in chain.from_iterable(self.step_collection.commands.values()):
@@ -76,10 +52,10 @@ class DefaultController(DebuggerControllerBase):
step_info = self.debugger.get_step_info(self.watches, self.step_index)
if step_info.current_frame:
- self._update_step_watches(step_info)
+ update_step_watches(step_info, self.watches, self.step_collection.commands)
self.step_collection.new_step(self.context, step_info)
- if self._in_source_file(step_info):
+ if in_source_file(self.source_files, step_info):
self.debugger.step()
else:
self.debugger.go()
diff --git a/debuginfo-tests/dexter/dex/debugger/dbgeng/dbgeng.py b/debuginfo-tests/dexter/dex/debugger/dbgeng/dbgeng.py
index 0afc748aecb..d812fd974f7 100644
--- a/debuginfo-tests/dexter/dex/debugger/dbgeng/dbgeng.py
+++ b/debuginfo-tests/dexter/dex/debugger/dbgeng/dbgeng.py
@@ -77,11 +77,21 @@ class DbgEng(DebuggerBase):
self.client.Control.RemoveBreakpoint(x)
def add_breakpoint(self, file_, line):
- # This is something to implement in the future -- as it stands, Dexter
- # doesn't test for such things as "I can set a breakpoint on this line".
- # This is only called AFAICT right now to ensure we break on every step.
+ # Breakpoint setting/deleting is not supported by dbgeng at this moment
+ # but is something that should be considered in the future.
+ # TODO: this method is called in the DefaultController but has no effect.
pass
+ def add_conditional_breakpoint(self, file_, line, condition):
+ # breakpoint setting/deleting is not supported by dbgeng at this moment
+ # but is something that should be considered in the future.
+ raise NotImplementedError('add_conditional_breakpoint is not yet implemented by dbgeng')
+
+ def delete_conditional_breakpoint(self, file_, line, condition):
+ # breakpoint setting/deleting is not supported by dbgeng at this moment
+ # but is something that should be considered in the future.
+ raise NotImplementedError('delete_conditional_breakpoint is not yet implemented by dbgeng')
+
def launch(self):
# We are, by this point, already launched.
self.step_info = probe_process.probe_state(self.client)
diff --git a/debuginfo-tests/dexter/dex/debugger/lldb/LLDB.py b/debuginfo-tests/dexter/dex/debugger/lldb/LLDB.py
index a943431c888..c7bb74681d9 100644
--- a/debuginfo-tests/dexter/dex/debugger/lldb/LLDB.py
+++ b/debuginfo-tests/dexter/dex/debugger/lldb/LLDB.py
@@ -105,9 +105,48 @@ class LLDB(DebuggerBase):
def add_breakpoint(self, file_, line):
if not self._target.BreakpointCreateByLocation(file_, line):
- raise LoadDebuggerException(
+ raise DebuggerException(
'could not add breakpoint [{}:{}]'.format(file_, line))
+ def add_conditional_breakpoint(self, file_, line, condition):
+ bp = self._target.BreakpointCreateByLocation(file_, line)
+ if bp:
+ bp.SetCondition(condition)
+ else:
+ raise DebuggerException(
+ 'could not add breakpoint [{}:{}]'.format(file_, line))
+
+ def delete_conditional_breakpoint(self, file_, line, condition):
+ bp_count = self._target.GetNumBreakpoints()
+ bps = [self._target.GetBreakpointAtIndex(ix) for ix in range(0, bp_count)]
+
+ for bp in bps:
+ bp_cond = bp.GetCondition()
+ bp_cond = bp_cond if bp_cond is not None else ''
+
+ if bp_cond != condition:
+ continue
+
+ # If one of the bound bp locations for this bp is bound to the same
+ # line in file_ above, then delete the entire parent bp and all
+ # bp locs.
+ # https://lldb.llvm.org/python_reference/lldb.SBBreakpoint-class.html
+ for breakpoint_location in bp:
+ sb_address = breakpoint_location.GetAddress()
+
+ sb_line_entry = sb_address.GetLineEntry()
+ bl_line = sb_line_entry.GetLine()
+
+ sb_file_entry = sb_line_entry.GetFileSpec()
+ bl_dir = sb_file_entry.GetDirectory()
+ bl_file_name = sb_file_entry.GetFilename()
+
+ bl_file_path = os.path.join(bl_dir, bl_file_name)
+
+ if bl_file_path == file_ and bl_line == line:
+ self._target.BreakpointDelete(bp.GetID())
+ break
+
def launch(self):
self._process = self._target.LaunchSimple(None, None, os.getcwd())
if not self._process or self._process.GetNumThreads() == 0:
diff --git a/debuginfo-tests/dexter/dex/debugger/visualstudio/VisualStudio.py b/debuginfo-tests/dexter/dex/debugger/visualstudio/VisualStudio.py
index b9816f84f72..40a902bd205 100644
--- a/debuginfo-tests/dexter/dex/debugger/visualstudio/VisualStudio.py
+++ b/debuginfo-tests/dexter/dex/debugger/visualstudio/VisualStudio.py
@@ -82,6 +82,9 @@ class VisualStudio(DebuggerBase, metaclass=abc.ABCMeta): # pylint: disable=abst
@property
def _location(self):
+ #TODO: Find a better way of determining path, line and column info
+ # that doesn't require reading break points. This method requires
+ # all lines to have a break point on them.
bp = self._debugger.BreakpointLastHit
return {
'path': getattr(bp, 'File', None),
@@ -111,8 +114,20 @@ class VisualStudio(DebuggerBase, metaclass=abc.ABCMeta): # pylint: disable=abst
def add_breakpoint(self, file_, line):
self._debugger.Breakpoints.Add('', file_, line)
+ def add_conditional_breakpoint(self, file_, line, condition):
+ column = 1
+ self._debugger.Breakpoints.Add('', file_, line, column, condition)
+
+ def delete_conditional_breakpoint(self, file_, line, condition):
+ for bp in self._debugger.Breakpoints:
+ for bound_bp in bp.Children:
+ if (bound_bp.File == file_ and bound_bp.FileLine == line and
+ bound_bp.Condition == condition):
+ bp.Delete()
+ break
+
def launch(self):
- self.step()
+ self._fn_go()
def step(self):
self._fn_step()
diff --git a/debuginfo-tests/dexter/dex/tools/test/Tool.py b/debuginfo-tests/dexter/dex/tools/test/Tool.py
index a615c8cad90..43191fd44bd 100644
--- a/debuginfo-tests/dexter/dex/tools/test/Tool.py
+++ b/debuginfo-tests/dexter/dex/tools/test/Tool.py
@@ -16,6 +16,7 @@ from dex.builder import run_external_build_script
from dex.command.ParseCommand import get_command_infos
from dex.debugger.Debuggers import run_debugger_subprocess
from dex.debugger.DebuggerControllers.DefaultController import DefaultController
+from dex.debugger.DebuggerControllers.ConditionalController import ConditionalController
from dex.dextIR.DextIR import DextIR
from dex.heuristic import Heuristic
from dex.tools import TestToolBase
@@ -136,9 +137,15 @@ class Tool(TestToolBase):
executable_path=self.context.options.executable,
source_paths=self.context.options.source_files,
dexter_version=self.context.version)
+
step_collection.commands = get_command_infos(
self.context.options.source_files)
- debugger_controller = DefaultController(self.context, step_collection)
+
+ if 'DexLimitSteps' in step_collection.commands:
+ debugger_controller = ConditionalController(self.context, step_collection)
+ else:
+ debugger_controller = DefaultController(self.context, step_collection)
+
return debugger_controller
def _get_steps(self, builderIR):
diff --git a/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_check_json_step_count.cpp b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_check_json_step_count.cpp
new file mode 100644
index 00000000000..45683fced2d
--- /dev/null
+++ b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_check_json_step_count.cpp
@@ -0,0 +1,20 @@
+// Purpose:
+// Check number of step lines are correctly reported in json output.
+//
+// REQUIRES: system-linux
+//
+// RUN: %dexter_regression_test --verbose -- %s | FileCheck %s
+// CHECK: limit_steps_check_json_step_count.cpp
+// CHECK: ## BEGIN ##
+// CHECK-COUNT-3: json_step_count.cpp",
+
+int main() {
+ int result = 0;
+ for(int ix = 0; ix != 10; ++ix) {
+ int index = ix;
+ result += index; // DexLabel('check')
+ }
+}
+
+// DexExpectWatchValue('index', 2, 7, 9, on_line='check')
+// DexLimitSteps('ix', 2, 7, 9, on_line='check')
diff --git a/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_loop.cpp b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_loop.cpp
new file mode 100644
index 00000000000..5946fa6ba46
--- /dev/null
+++ b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_loop.cpp
@@ -0,0 +1,20 @@
+// Purpose:
+// Check the DexLimit steps only gathers step info for 2 iterations of a
+// for loop.
+//
+// REQUIRES: system-linux
+//
+// RUN: %dexter_regression_test -- %s | FileCheck %s
+// CHECK: limit_steps_expect_loop.cpp:
+
+int main(const int argc, const char * argv[]) {
+ unsigned int sum = 1;
+ for(unsigned int ix = 0; ix != 5; ++ix) {
+ unsigned thing_to_add = ix + ix - ix; // DexLabel('start')
+ sum += ix; // DexLabel('end')
+ }
+ return sum;
+}
+
+// DexLimitSteps('ix', 0, 3, from_line='start', to_line='end')
+// DexExpectWatchValue('ix', 0, 3, from_line='start', to_line='end')
diff --git a/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_value.cpp b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_value.cpp
new file mode 100644
index 00000000000..2715e28d66b
--- /dev/null
+++ b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_value.cpp
@@ -0,0 +1,18 @@
+// Purpose:
+// Ensure that limited stepping breaks for all expected values.
+//
+// REQUIRES: system-linux
+//
+// RUN: %dexter_regression_test -- %s | FileCheck %s
+// CHECK: limit_steps_expect_value.cpp
+
+int main() {
+ int i = 0;
+ i = 1; // DexLabel('from')
+ i = 2;
+ i = 3;
+ return 0; // DexLabel('long_range')
+}
+
+// DexLimitSteps('i', '0', from_line='from', to_line='long_range')
+// DexExpectWatchValue('i', 0, 1, 2, 3, from_line='from', to_line='long_range')
diff --git a/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_overlapping_ranges.cpp b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_overlapping_ranges.cpp
new file mode 100644
index 00000000000..3200fe0979b
--- /dev/null
+++ b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_overlapping_ranges.cpp
@@ -0,0 +1,36 @@
+// Purpose:
+// Ensure that multiple overlapping \DexLimitSteps ranges do not interfere.
+//
+// REQUIRES: system-linux
+//
+// RUN: %dexter_regression_test -- %s | FileCheck %s
+// CHECK: limit_steps_overlapping_ranges.cpp
+
+int main() {
+ int val1;
+ int val2;
+ int placeholder;
+ for (int ix = 0; ix != 10; ++ix) {
+ placeholder=val1+val2; // DexLabel('from')
+ if (ix == 0) {
+ val1 = ix;
+ val2 = ix; // DexLabel('val1_check')
+ placeholder=val1+val2; // DexLabel('val1_check_to')
+ }
+ else if (ix == 2) {
+ val2 = ix;
+ val1 = ix; // DexLabel('val2_check')
+ placeholder=val1+val2; // DexLabel('val2_check_to')
+ }
+ placeholder=val1+val2; // DexLabel('to')
+ }
+ return val1 + val2;
+}
+
+// DexExpectWatchValue('ix', 0, 2, 5, from_line='from', to_line='to')
+// DexExpectWatchValue('val1', 0, from_line='val1_check', to_line='val1_check_to')
+// DexExpectWatchValue('val2', 2, from_line='val2_check', to_line='val2_check_to')
+
+// DexLimitSteps('ix', 5, from_line='from', to_line='to')
+// DexLimitSteps('val1', 0, from_line='val1_check', to_line='val1_check_to')
+// DexLimitSteps('val2', 2, from_line='val2_check', to_line='val2_check_to')
diff --git a/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_same_line_conditional.cpp b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_same_line_conditional.cpp
new file mode 100644
index 00000000000..060ff0d5fe7
--- /dev/null
+++ b/debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_same_line_conditional.cpp
@@ -0,0 +1,26 @@
+// Purpose:
+// Test that LimitStep commands can exist on the same from line.
+//
+// REQUIRES: system-linux
+//
+// RUN: %dexter_regression_test -- %s | FileCheck %s
+// CHECK: limit_steps_same_line_conditional.cpp
+
+int main() {
+ int val1 = 0;
+
+ int placeholder;
+ for(int ix = 0; ix != 4; ++ix) {
+ val1 = ix;
+ placeholder = ix; // DexLabel('from')
+ placeholder = ix;
+ val1 += 2; // DexLabel('to')
+ placeholder = ix; // DexLabel('extended_to')
+ }
+ return val1 + placeholder;
+}
+
+// DexExpectWatchValue('val1', 0, 1, 3, from_line='from', to_line='extended_to')
+
+// DexLimitSteps('ix', 0, from_line='from', to_line='to')
+// DexLimitSteps('ix', 1, from_line='from', to_line='extended_to')

28
debuginfo-tests/dexter/Commands.md
View File

@ -173,34 +173,6 @@ Expect the source line this is found on will never be stepped on to.
[TODO]
----
## DexLimitSteps
DexLimitSteps(expr, *values [, **from_line=1],[,**to_line=Max]
[,**on_line])
Args:
expr (str): variable or value to compare.
Arg list:
values (str): At least one potential value the expr may evaluate to.
Keyword args:
from_line (int): Define the start of the limited step range.
to_line (int): Define the end of the limited step range.
on_line (int): Define a range with length 1 starting and ending on the
same line.
### Description
Define a limited stepping range that is predicated on a condition. When
'(expr) == (values[n])', set a range of temporary, unconditional break points within
the test file defined by the range from_line and to_line or on_line.
The condition is only evaluated on the line 'from_line' or 'on_line'. If the
condition is not true at the start of the range, the whole range is ignored.
DexLimitSteps commands are useful for reducing the amount of steps gathered in
large test cases that would normally take much longer to complete.
----
## DexLabel
DexLabel(name)

2
debuginfo-tests/dexter/dex/command/ParseCommand.py
View File

@ -24,7 +24,6 @@ from dex.command.commands.DexExpectStepOrder import DexExpectStepOrder
from dex.command.commands.DexExpectWatchType import DexExpectWatchType
from dex.command.commands.DexExpectWatchValue import DexExpectWatchValue
from dex.command.commands.DexLabel import DexLabel
from dex.command.commands.DexLimitSteps import DexLimitSteps
from dex.command.commands.DexUnreachable import DexUnreachable
from dex.command.commands.DexWatch import DexWatch
from dex.utils import Timer
@ -43,7 +42,6 @@ def _get_valid_commands():
DexExpectWatchType.get_name() : DexExpectWatchType,
DexExpectWatchValue.get_name() : DexExpectWatchValue,
DexLabel.get_name() : DexLabel,
DexLimitSteps.get_name() : DexLimitSteps,
DexUnreachable.get_name() : DexUnreachable,
DexWatch.get_name() : DexWatch
}

54
debuginfo-tests/dexter/dex/command/commands/DexLimitSteps.py
View File

@ -1,54 +0,0 @@
# DExTer : Debugging Experience Tester
# ~~~~~~ ~ ~~ ~ ~~
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""A Command that enables test writers to specify a limited number of break
points using an start condition and range.
"""
from dex.command.CommandBase import CommandBase
class DexLimitSteps(CommandBase):
def __init__(self, *args, **kwargs):
self.expression = args[0]
self.values = [str(arg) for arg in args[1:]]
try:
on_line = kwargs.pop('on_line')
self.from_line = on_line
self.to_line = on_line
except KeyError:
self.from_line = kwargs.pop('from_line', 1)
self.to_line = kwargs.pop('to_line', 999999)
if kwargs:
raise TypeError('unexpected named args: {}'.format(
', '.join(kwargs)))
super(DexLimitSteps, self).__init__()
def resolve_label(self, label_line_pair):
label, lineno = label_line_pair
if isinstance(self.from_line, str):
if self.from_line == label:
self.from_line = lineno
if isinstance(self.to_line, str):
if self.to_line == label:
self.to_line = lineno
def has_labels(self):
return len(self.get_label_args()) > 0
def get_label_args(self):
return [label for label in (self.from_line, self.to_line)
if isinstance(label, str)]
def eval(self):
raise NotImplementedError('DexLimitSteps commands cannot be evaled.')
@staticmethod
def get_name():
return __class__.__name__
@staticmethod
def get_subcommands() -> dict:
return None

8
debuginfo-tests/dexter/dex/debugger/DebuggerBase.py
View File

@ -120,14 +120,6 @@ class DebuggerBase(object, metaclass=abc.ABCMeta):
def add_breakpoint(self, file_, line):
pass
@abc.abstractmethod
def add_conditional_breakpoint(self, file_, line, condition):
pass
@abc.abstractmethod
def delete_conditional_breakpoint(self, file_, line, condition):
pass
@abc.abstractmethod
def launch(self):
pass

127
debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ConditionalController.py
View File

@ -1,127 +0,0 @@
# DExTer : Debugging Experience Tester
# ~~~~~~ ~ ~~ ~ ~~
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""Conditional Controller Class for DExTer.-"""
import os
import time
from collections import defaultdict
from itertools import chain
from dex.debugger.DebuggerControllers.ControllerHelpers import in_source_file, update_step_watches
from dex.debugger.DebuggerControllers.DebuggerControllerBase import DebuggerControllerBase
from dex.debugger.DebuggerBase import DebuggerBase
from dex.utils.Exceptions import DebuggerException
class ConditionalBpRange:
"""Represents a conditional range of breakpoints within a source file descending from
one line to another."""
def __init__(self, expression: str, path: str, range_from: int, range_to: int, values: list):
self.expression = expression
self.path = path
self.range_from = range_from
self.range_to = range_to
self.conditional_values = values
def get_conditional_expression_list(self):
conditional_list = []
for value in self.conditional_values:
# (<expression>) == (<value>)
conditional_expression = '({}) == ({})'.format(self.expression, value)
conditional_list.append(conditional_expression)
return conditional_list
class ConditionalController(DebuggerControllerBase):
def __init__(self, context, step_collection):
self.context = context
self.step_collection = step_collection
self._conditional_bps = None
self._watches = set()
self._step_index = 0
self._build_conditional_bps()
self._path_and_line_to_conditional_bp = defaultdict(list)
self._pause_between_steps = context.options.pause_between_steps
self._max_steps = context.options.max_steps
def _build_conditional_bps(self):
commands = self.step_collection.commands
self._conditional_bps = []
try:
limit_commands = commands['DexLimitSteps']
for lc in limit_commands:
conditional_bp = ConditionalBpRange(
lc.expression,
lc.path,
lc.from_line,
lc.to_line,
lc.values)
self._conditional_bps.append(conditional_bp)
except KeyError:
raise DebuggerException('Missing DexLimitSteps commands, cannot conditionally step.')
def _set_conditional_bps(self):
# When we break in the debugger we need a quick and easy way to look up
# which conditional bp we've breaked on.
for cbp in self._conditional_bps:
conditional_bp_list = self._path_and_line_to_conditional_bp[(cbp.path, cbp.range_from)]
conditional_bp_list.append(cbp)
# Set break points only on the first line of any conditional range, we'll set
# more break points for a range when the condition is satisfied.
for cbp in self._conditional_bps:
for cond_expr in cbp.get_conditional_expression_list():
self.debugger.add_conditional_breakpoint(cbp.path, cbp.range_from, cond_expr)
def _conditional_met(self, cbp):
for cond_expr in cbp.get_conditional_expression_list():
valueIR = self.debugger.evaluate_expression(cond_expr)
if valueIR.type_name == 'bool' and valueIR.value == 'true':
return True
return False
def _run_debugger_custom(self):
# TODO: Add conditional and unconditional breakpoint support to dbgeng.
if self.debugger.get_name() == 'dbgeng':
raise DebuggerException('DexLimitSteps commands are not supported by dbgeng')
self.step_collection.clear_steps()
self._set_conditional_bps()
for command_obj in chain.from_iterable(self.step_collection.commands.values()):
self._watches.update(command_obj.get_watches())
self.debugger.launch()
time.sleep(self._pause_between_steps)
while not self.debugger.is_finished:
while self.debugger.is_running:
pass
step_info = self.debugger.get_step_info(self._watches, self._step_index)
if step_info.current_frame:
self._step_index += 1
update_step_watches(step_info, self._watches, self.step_collection.commands)
self.step_collection.new_step(self.context, step_info)
loc = step_info.current_location
conditional_bp_key = (loc.path, loc.lineno)
if conditional_bp_key in self._path_and_line_to_conditional_bp:
conditional_bps = self._path_and_line_to_conditional_bp[conditional_bp_key]
for cbp in conditional_bps:
if self._conditional_met(cbp):
# Unconditional range should ignore first line as that's the
# conditional bp we just hit and should be inclusive of final line
for line in range(cbp.range_from + 1, cbp.range_to + 1):
self.debugger.add_conditional_breakpoint(cbp.path, line, condition='')
# Clear any uncondtional break points at this loc.
self.debugger.delete_conditional_breakpoint(file_=loc.path, line=loc.lineno, condition='')
self.debugger.go()
time.sleep(self._pause_between_steps)

37
debuginfo-tests/dexter/dex/debugger/DebuggerControllers/ControllerHelpers.py
View File

@ -1,37 +0,0 @@
# DExTer : Debugging Experience Tester
# ~~~~~~ ~ ~~ ~ ~~
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
import os
from itertools import chain
def in_source_file(source_files, step_info):
if not step_info.current_frame:
return False
if not step_info.current_location.path:
return False
if not os.path.exists(step_info.current_location.path):
return False
return any(os.path.samefile(step_info.current_location.path, f) \
for f in source_files)
def update_step_watches(step_info, watches, commands):
watch_cmds = ['DexUnreachable', 'DexExpectStepOrder']
towatch = chain.from_iterable(commands[x]
for x in watch_cmds
if x in commands)
try:
# Iterate over all watches of the types named in watch_cmds
for watch in towatch:
loc = step_info.current_location
if (os.path.exists(loc.path)
and os.path.samefile(watch.path, loc.path)
and watch.lineno == loc.lineno):
result = watch.eval(step_info)
step_info.watches.update(result)
break
except KeyError:
pass

2
debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DebuggerControllerBase.py
View File

@ -4,7 +4,7 @@
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""Abstract Base class for controlling debuggers."""
"""Default class for controlling debuggers."""
import abc

44
debuginfo-tests/dexter/dex/debugger/DebuggerControllers/DefaultController.py
View File

@ -4,37 +4,61 @@
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""Default class for controlling debuggers."""
"""Base class for controlling debuggers."""
from itertools import chain
import os
import time
from dex.debugger.DebuggerControllers.DebuggerControllerBase import DebuggerControllerBase
from dex.debugger.DebuggerControllers.ControllerHelpers import in_source_file, update_step_watches
from dex.utils.Exceptions import DebuggerException, LoadDebuggerException
from dex.utils.Exceptions import DebuggerException
class DefaultController(DebuggerControllerBase):
def __init__(self, context, step_collection):
self.context = context
self.step_collection = step_collection
self.source_files = self.context.options.source_files
self.watches = set()
self.step_index = 0
def _update_step_watches(self, step_info):
watch_cmds = ['DexUnreachable', 'DexExpectStepOrder']
towatch = chain.from_iterable(self.step_collection.commands[x]
for x in watch_cmds
if x in self.step_collection.commands)
try:
# Iterate over all watches of the types named in watch_cmds
for watch in towatch:
loc = step_info.current_location
if (os.path.exists(loc.path)
and os.path.samefile(watch.path, loc.path)
and watch.lineno == loc.lineno):
result = watch.eval(step_info)
step_info.watches.update(result)
break
except KeyError:
pass
def _break_point_all_lines(self):
for s in self.context.options.source_files:
with open(s, 'r') as fp:
num_lines = len(fp.readlines())
for line in range(1, num_lines + 1):
try:
self.debugger.add_breakpoint(s, line)
except DebuggerException:
raise LoadDebuggerException(DebuggerException.msg)
self.debugger.add_breakpoint(s, line)
def _in_source_file(self, step_info):
if not step_info.current_frame:
return False
if not step_info.current_location.path:
return False
if not os.path.exists(step_info.current_location.path):
return False
return any(os.path.samefile(step_info.current_location.path, f) \
for f in self.context.options.source_files)
def _run_debugger_custom(self):
self.step_collection.debugger = self.debugger.debugger_info
self._break_point_all_lines()
self.debugger.launch()
for command_obj in chain.from_iterable(self.step_collection.commands.values()):
@ -52,10 +76,10 @@ class DefaultController(DebuggerControllerBase):
step_info = self.debugger.get_step_info(self.watches, self.step_index)
if step_info.current_frame:
update_step_watches(step_info, self.watches, self.step_collection.commands)
self._update_step_watches(step_info)
self.step_collection.new_step(self.context, step_info)
if in_source_file(self.source_files, step_info):
if self._in_source_file(step_info):
self.debugger.step()
else:
self.debugger.go()

16
debuginfo-tests/dexter/dex/debugger/dbgeng/dbgeng.py
View File

@ -77,21 +77,11 @@ class DbgEng(DebuggerBase):
self.client.Control.RemoveBreakpoint(x)
def add_breakpoint(self, file_, line):
# Breakpoint setting/deleting is not supported by dbgeng at this moment
# but is something that should be considered in the future.
# TODO: this method is called in the DefaultController but has no effect.
# This is something to implement in the future -- as it stands, Dexter
# doesn't test for such things as "I can set a breakpoint on this line".
# This is only called AFAICT right now to ensure we break on every step.
pass
def add_conditional_breakpoint(self, file_, line, condition):
# breakpoint setting/deleting is not supported by dbgeng at this moment
# but is something that should be considered in the future.
raise NotImplementedError('add_conditional_breakpoint is not yet implemented by dbgeng')
def delete_conditional_breakpoint(self, file_, line, condition):
# breakpoint setting/deleting is not supported by dbgeng at this moment
# but is something that should be considered in the future.
raise NotImplementedError('delete_conditional_breakpoint is not yet implemented by dbgeng')
def launch(self):
# We are, by this point, already launched.
self.step_info = probe_process.probe_state(self.client)

41
debuginfo-tests/dexter/dex/debugger/lldb/LLDB.py
View File

@ -105,48 +105,9 @@ class LLDB(DebuggerBase):
def add_breakpoint(self, file_, line):
if not self._target.BreakpointCreateByLocation(file_, line):
raise DebuggerException(
raise LoadDebuggerException(
'could not add breakpoint [{}:{}]'.format(file_, line))
def add_conditional_breakpoint(self, file_, line, condition):
bp = self._target.BreakpointCreateByLocation(file_, line)
if bp:
bp.SetCondition(condition)
else:
raise DebuggerException(
'could not add breakpoint [{}:{}]'.format(file_, line))
def delete_conditional_breakpoint(self, file_, line, condition):
bp_count = self._target.GetNumBreakpoints()
bps = [self._target.GetBreakpointAtIndex(ix) for ix in range(0, bp_count)]
for bp in bps:
bp_cond = bp.GetCondition()
bp_cond = bp_cond if bp_cond is not None else ''
if bp_cond != condition:
continue
# If one of the bound bp locations for this bp is bound to the same
# line in file_ above, then delete the entire parent bp and all
# bp locs.
# https://lldb.llvm.org/python_reference/lldb.SBBreakpoint-class.html
for breakpoint_location in bp:
sb_address = breakpoint_location.GetAddress()
sb_line_entry = sb_address.GetLineEntry()
bl_line = sb_line_entry.GetLine()
sb_file_entry = sb_line_entry.GetFileSpec()
bl_dir = sb_file_entry.GetDirectory()
bl_file_name = sb_file_entry.GetFilename()
bl_file_path = os.path.join(bl_dir, bl_file_name)
if bl_file_path == file_ and bl_line == line:
self._target.BreakpointDelete(bp.GetID())
break
def launch(self):
self._process = self._target.LaunchSimple(None, None, os.getcwd())
if not self._process or self._process.GetNumThreads() == 0:

17
debuginfo-tests/dexter/dex/debugger/visualstudio/VisualStudio.py
View File

@ -82,9 +82,6 @@ class VisualStudio(DebuggerBase, metaclass=abc.ABCMeta): # pylint: disable=abst
@property
def _location(self):
#TODO: Find a better way of determining path, line and column info
# that doesn't require reading break points. This method requires
# all lines to have a break point on them.
bp = self._debugger.BreakpointLastHit
return {
'path': getattr(bp, 'File', None),
@ -114,20 +111,8 @@ class VisualStudio(DebuggerBase, metaclass=abc.ABCMeta): # pylint: disable=abst
def add_breakpoint(self, file_, line):
self._debugger.Breakpoints.Add('', file_, line)
def add_conditional_breakpoint(self, file_, line, condition):
column = 1
self._debugger.Breakpoints.Add('', file_, line, column, condition)
def delete_conditional_breakpoint(self, file_, line, condition):
for bp in self._debugger.Breakpoints:
for bound_bp in bp.Children:
if (bound_bp.File == file_ and bound_bp.FileLine == line and
bound_bp.Condition == condition):
bp.Delete()
break
def launch(self):
self._fn_go()
self.step()
def step(self):
self._fn_step()

9
debuginfo-tests/dexter/dex/tools/test/Tool.py
View File

@ -16,7 +16,6 @@ from dex.builder import run_external_build_script
from dex.command.ParseCommand import get_command_infos
from dex.debugger.Debuggers import run_debugger_subprocess
from dex.debugger.DebuggerControllers.DefaultController import DefaultController
from dex.debugger.DebuggerControllers.ConditionalController import ConditionalController
from dex.dextIR.DextIR import DextIR
from dex.heuristic import Heuristic
from dex.tools import TestToolBase
@ -137,15 +136,9 @@ class Tool(TestToolBase):
executable_path=self.context.options.executable,
source_paths=self.context.options.source_files,
dexter_version=self.context.version)
step_collection.commands = get_command_infos(
self.context.options.source_files)
if 'DexLimitSteps' in step_collection.commands:
debugger_controller = ConditionalController(self.context, step_collection)
else:
debugger_controller = DefaultController(self.context, step_collection)
debugger_controller = DefaultController(self.context, step_collection)
return debugger_controller
def _get_steps(self, builderIR):

20
debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_check_json_step_count.cpp
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// Purpose:
// Check number of step lines are correctly reported in json output.
//
// REQUIRES: system-linux
//
// RUN: %dexter_regression_test --verbose -- %s | FileCheck %s
// CHECK: limit_steps_check_json_step_count.cpp
// CHECK: ## BEGIN ##
// CHECK-COUNT-3: json_step_count.cpp",
int main() {
int result = 0;
for(int ix = 0; ix != 10; ++ix) {
int index = ix;
result += index; // DexLabel('check')
}
}
// DexExpectWatchValue('index', 2, 7, 9, on_line='check')
// DexLimitSteps('ix', 2, 7, 9, on_line='check')

20
debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_loop.cpp
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// Purpose:
// Check the DexLimit steps only gathers step info for 2 iterations of a
// for loop.
//
// REQUIRES: system-linux
//
// RUN: %dexter_regression_test -- %s | FileCheck %s
// CHECK: limit_steps_expect_loop.cpp:
int main(const int argc, const char * argv[]) {
unsigned int sum = 1;
for(unsigned int ix = 0; ix != 5; ++ix) {
unsigned thing_to_add = ix + ix - ix; // DexLabel('start')
sum += ix; // DexLabel('end')
}
return sum;
}
// DexLimitSteps('ix', 0, 3, from_line='start', to_line='end')
// DexExpectWatchValue('ix', 0, 3, from_line='start', to_line='end')

18
debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_expect_value.cpp
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// Purpose:
// Ensure that limited stepping breaks for all expected values.
//
// REQUIRES: system-linux
//
// RUN: %dexter_regression_test -- %s | FileCheck %s
// CHECK: limit_steps_expect_value.cpp
int main() {
int i = 0;
i = 1; // DexLabel('from')
i = 2;
i = 3;
return 0; // DexLabel('long_range')
}
// DexLimitSteps('i', '0', from_line='from', to_line='long_range')
// DexExpectWatchValue('i', 0, 1, 2, 3, from_line='from', to_line='long_range')

36
debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_overlapping_ranges.cpp
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// Purpose:
// Ensure that multiple overlapping \DexLimitSteps ranges do not interfere.
//
// REQUIRES: system-linux
//
// RUN: %dexter_regression_test -- %s | FileCheck %s
// CHECK: limit_steps_overlapping_ranges.cpp
int main() {
int val1;
int val2;
int placeholder;
for (int ix = 0; ix != 10; ++ix) {
placeholder=val1+val2; // DexLabel('from')
if (ix == 0) {
val1 = ix;
val2 = ix; // DexLabel('val1_check')
placeholder=val1+val2; // DexLabel('val1_check_to')
}
else if (ix == 2) {
val2 = ix;
val1 = ix; // DexLabel('val2_check')
placeholder=val1+val2; // DexLabel('val2_check_to')
}
placeholder=val1+val2; // DexLabel('to')
}
return val1 + val2;
}
// DexExpectWatchValue('ix', 0, 2, 5, from_line='from', to_line='to')
// DexExpectWatchValue('val1', 0, from_line='val1_check', to_line='val1_check_to')
// DexExpectWatchValue('val2', 2, from_line='val2_check', to_line='val2_check_to')
// DexLimitSteps('ix', 5, from_line='from', to_line='to')
// DexLimitSteps('val1', 0, from_line='val1_check', to_line='val1_check_to')
// DexLimitSteps('val2', 2, from_line='val2_check', to_line='val2_check_to')

26
debuginfo-tests/dexter/feature_tests/commands/perfect/limit_steps/limit_steps_same_line_conditional.cpp
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// Purpose:
// Test that LimitStep commands can exist on the same from line.
//
// REQUIRES: system-linux
//
// RUN: %dexter_regression_test -- %s | FileCheck %s
// CHECK: limit_steps_same_line_conditional.cpp
int main() {
int val1 = 0;
int placeholder;
for(int ix = 0; ix != 4; ++ix) {
val1 = ix;
placeholder = ix; // DexLabel('from')
placeholder = ix;
val1 += 2; // DexLabel('to')
placeholder = ix; // DexLabel('extended_to')
}
return val1 + placeholder;
}
// DexExpectWatchValue('val1', 0, 1, 3, from_line='from', to_line='extended_to')
// DexLimitSteps('ix', 0, from_line='from', to_line='to')
// DexLimitSteps('ix', 1, from_line='from', to_line='extended_to')