Vendor import of lldb trunk r256945:

https://llvm.org/svn/llvm-project/lldb/trunk@256945

3 files changed, 182 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/python_api/value/change_values/Makefile b/packages/Python/lldbsuite/test/python_api/value/change_values/Makefile
new file mode 100644
index 0000000..b09a579
--- /dev/null
+++ b/packages/Python/lldbsuite/test/python_api/value/change_values/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+
+C_SOURCES := main.c
+
+include $(LEVEL)/Makefile.rules
diff --git a/packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py b/packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py
new file mode 100644
index 0000000..77aefe0
--- /dev/null
+++ b/packages/Python/lldbsuite/test/python_api/value/change_values/TestChangeValueAPI.py
@@ -0,0 +1,148 @@
+"""
+Test some SBValue APIs.
+"""
+
+from __future__ import print_function
+
+
+
+import os, time
+import re
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+
+class ChangeValueAPITestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # We'll use the test method name as the exe_name.
+        self.exe_name = self.testMethodName
+        # Find the line number to of function 'c'.
+        self.line = line_number('main.c', '// Stop here and set values')
+        self.check_line = line_number('main.c', '// Stop here and check values')
+        self.end_line = line_number ('main.c', '// Set a breakpoint here at the end')
+
+    @expectedFailureWindows("llvm.org/pr24772")
+    @add_test_categories(['pyapi'])
+    def test_change_value(self):
+        """Exercise the SBValue::SetValueFromCString API."""
+        d = {'EXE': self.exe_name}
+        self.build(dictionary=d)
+        self.setTearDownCleanup(dictionary=d)
+        exe = os.path.join(os.getcwd(), self.exe_name)
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Create the breakpoint inside function 'main'.
+        breakpoint = target.BreakpointCreateByLocation('main.c', self.line)
+        self.assertTrue(breakpoint, VALID_BREAKPOINT)
+
+        # Create the breakpoint inside the function 'main'
+        check_breakpoint = target.BreakpointCreateByLocation('main.c', self.check_line)
+        self.assertTrue(check_breakpoint, VALID_BREAKPOINT)
+
+        # Create the breakpoint inside function 'main'.
+        end_breakpoint = target.BreakpointCreateByLocation('main.c', self.end_line)
+        self.assertTrue(end_breakpoint, VALID_BREAKPOINT)
+
+        # Now launch the process, and do not stop at entry point.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.assertTrue(process, PROCESS_IS_VALID)
+
+        # Get Frame #0.
+        self.assertTrue(process.GetState() == lldb.eStateStopped)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
+        frame0 = thread.GetFrameAtIndex(0)
+        self.assertTrue (frame0.IsValid(), "Got a valid frame.")
+
+        # Get the val variable and change it:
+        error = lldb.SBError()
+
+        val_value = frame0.FindVariable ("val")
+        self.assertTrue (val_value.IsValid(), "Got the SBValue for val")
+        actual_value = val_value.GetValueAsSigned (error, 0);
+        self.assertTrue (error.Success(), "Got a value from val")
+        self.assertTrue (actual_value == 100, "Got the right value from val")
+        
+        result = val_value.SetValueFromCString ("12345")
+        self.assertTrue (result, "Setting val returned True.")
+        actual_value = val_value.GetValueAsSigned (error, 0);
+        self.assertTrue (error.Success(), "Got a changed value from val")
+        self.assertTrue (actual_value == 12345, "Got the right changed value from val")
+        
+        # Now check that we can set a structure element:
+
+        mine_value = frame0.FindVariable ("mine")
+        self.assertTrue (mine_value.IsValid(), "Got the SBValue for mine")
+        
+        mine_second_value = mine_value.GetChildMemberWithName ("second_val")
+        self.assertTrue (mine_second_value.IsValid(), "Got second_val from mine")
+        actual_value = mine_second_value.GetValueAsUnsigned (error, 0)
+        self.assertTrue (error.Success(), "Got an unsigned value for second_val")
+        self.assertTrue (actual_value == 5555)
+
+        result = mine_second_value.SetValueFromCString ("98765")
+        self.assertTrue (result, "Success setting mine.second_value.")
+        actual_value = mine_second_value.GetValueAsSigned (error, 0);
+        self.assertTrue (error.Success(), "Got a changed value from mine.second_val")
+        self.assertTrue (actual_value == 98765, "Got the right changed value from mine.second_val")
+        
+        # Next do the same thing with the pointer version.
+        ptr_value = frame0.FindVariable ("ptr")
+        self.assertTrue (ptr_value.IsValid(), "Got the SBValue for ptr")
+        
+        ptr_second_value = ptr_value.GetChildMemberWithName ("second_val")
+        self.assertTrue (ptr_second_value.IsValid(), "Got second_val from ptr")
+        actual_value = ptr_second_value.GetValueAsUnsigned (error, 0)
+        self.assertTrue (error.Success(), "Got an unsigned value for ptr->second_val")
+        self.assertTrue (actual_value == 6666)
+
+        result = ptr_second_value.SetValueFromCString ("98765")
+        self.assertTrue (result, "Success setting ptr->second_value.")
+        actual_value = ptr_second_value.GetValueAsSigned (error, 0);
+        self.assertTrue (error.Success(), "Got a changed value from ptr->second_val")
+        self.assertTrue (actual_value == 98765, "Got the right changed value from ptr->second_val")
+        
+        # gcc may set multiple locations for breakpoint
+        breakpoint.SetEnabled(False)
+
+        # Now continue, grab the stdout and make sure we changed the real values as well...
+        process.Continue();
+
+        self.assertTrue(process.GetState() == lldb.eStateStopped)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
+
+        expected_value = "Val - 12345 Mine - 55, 98765, 55555555. Ptr - 66, 98765, 66666666"
+        stdout = process.GetSTDOUT(1000)
+        self.assertTrue (expected_value in stdout, "STDOUT showed changed values.")
+
+        # Finally, change the stack pointer to 0, and we should not make it to our end breakpoint.
+        frame0 = thread.GetFrameAtIndex(0)
+        self.assertTrue (frame0.IsValid(), "Second time: got a valid frame.")
+        sp_value = frame0.FindValue ("sp", lldb.eValueTypeRegister);
+        self.assertTrue (sp_value.IsValid(), "Got a stack pointer value")
+        result = sp_value.SetValueFromCString("1")
+        self.assertTrue (result, "Setting sp returned true.")
+        actual_value = sp_value.GetValueAsUnsigned (error, 0)
+        self.assertTrue (error.Success(), "Got a changed value for sp")
+        self.assertTrue (actual_value == 1, "Got the right changed value for sp.")
+        
+        # Boundary condition test the SBValue.CreateValueFromExpression() API.
+        # LLDB should not crash!
+        nosuchval = mine_value.CreateValueFromExpression(None, None)
+
+        process.Continue()
+
+        self.assertTrue(process.GetState() == lldb.eStateStopped)
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
+        self.assertTrue(thread == None, "We should not have managed to hit our second breakpoint with sp == 1")
+        
+        process.Kill()
diff --git a/packages/Python/lldbsuite/test/python_api/value/change_values/main.c b/packages/Python/lldbsuite/test/python_api/value/change_values/main.c
new file mode 100644
index 0000000..01455c0
--- /dev/null
+++ b/packages/Python/lldbsuite/test/python_api/value/change_values/main.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+struct foo
+{
+  uint8_t   first_val;
+  uint32_t  second_val;
+  uint64_t  third_val;
+};
+  
+int main ()
+{
+  int val = 100;
+  struct foo mine = {55, 5555, 55555555};
+  struct foo *ptr = (struct foo *) malloc (sizeof (struct foo));
+  ptr->first_val = 66;
+  ptr->second_val = 6666;
+  ptr->third_val = 66666666;
+
+  // Stop here and set values
+  printf ("Val - %d Mine - %d, %d, %llu. Ptr - %d, %d, %llu\n", val, 
+          mine.first_val, mine.second_val, mine.third_val,
+          ptr->first_val, ptr->second_val, ptr->third_val); 
+
+  // Stop here and check values
+  printf ("This is just another call which we won't make it over %d.", val);
+  return 0; // Set a breakpoint here at the end
+}