vendor/lldb/lldb-trunk-r256945

3 files changed, 234 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/lang/c/bitfields/Makefile b/packages/Python/lldbsuite/test/lang/c/bitfields/Makefile
new file mode 100644
index 000000000000..b09a579159d4
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/c/bitfields/Makefile
@@ -0,0 +1,5 @@
+LEVEL = ../../../make
+
+C_SOURCES := main.c
+
+include $(LEVEL)/Makefile.rules
diff --git a/packages/Python/lldbsuite/test/lang/c/bitfields/TestBitfields.py b/packages/Python/lldbsuite/test/lang/c/bitfields/TestBitfields.py
new file mode 100644
index 000000000000..de7a333a18fa
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/c/bitfields/TestBitfields.py
@@ -0,0 +1,162 @@
+"""Show bitfields and check that they display correctly."""
+
+from __future__ import print_function
+
+
+
+import os, time
+import lldb
+from lldbsuite.test.lldbtest import *
+import lldbsuite.test.lldbutil as lldbutil
+
+class BitfieldsTestCase(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.c', '// Set break point at this line.')
+
+    @skipIfWindows # BitFields exhibit crashes in record layout on Windows (http://llvm.org/pr21800)
+    def test_and_run_command(self):
+        """Test 'frame variable ...' on a variable with bitfields."""
+        self.build()
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        # Break inside the main.
+        lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
+
+        self.runCmd("run", RUN_SUCCEEDED)
+
+        # The stop reason of the thread should be breakpoint.
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+            substrs = ['stopped',
+                       'stop reason = breakpoint'])
+
+        # The breakpoint should have a hit count of 1.
+        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
+            substrs = [' resolved, hit count = 1'])
+
+        # This should display correctly.
+        self.expect("frame variable --show-types bits", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['(uint32_t:1) b1 = 1',
+                       '(uint32_t:2) b2 = 3',
+                       '(uint32_t:3) b3 = 7',
+                       '(uint32_t) b4 = 15',
+                       '(uint32_t:5) b5 = 31',
+                       '(uint32_t:6) b6 = 63',
+                       '(uint32_t:7) b7 = 127',
+                       '(uint32_t:4) four = 15'])
+
+        # And so should this.
+        # rdar://problem/8348251
+        self.expect("frame variable --show-types", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['(uint32_t:1) b1 = 1',
+                       '(uint32_t:2) b2 = 3',
+                       '(uint32_t:3) b3 = 7',
+                       '(uint32_t) b4 = 15',
+                       '(uint32_t:5) b5 = 31',
+                       '(uint32_t:6) b6 = 63',
+                       '(uint32_t:7) b7 = 127',
+                       '(uint32_t:4) four = 15'])
+
+        self.expect("expr (bits.b1)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '1'])
+        self.expect("expr (bits.b2)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '3'])
+        self.expect("expr (bits.b3)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '7'])
+        self.expect("expr (bits.b4)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '15'])
+        self.expect("expr (bits.b5)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '31'])
+        self.expect("expr (bits.b6)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '63'])
+        self.expect("expr (bits.b7)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '127'])
+        self.expect("expr (bits.four)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '15'])
+
+        self.expect("frame variable --show-types more_bits", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['(uint32_t:3) a = 3',
+                       '(uint8_t:1) b = \'\\0\'',
+                       '(uint8_t:1) c = \'\\x01\'',
+                       '(uint8_t:1) d = \'\\0\''])
+
+        self.expect("expr (more_bits.a)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint32_t', '3'])
+        self.expect("expr (more_bits.b)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint8_t', '\\0'])
+        self.expect("expr (more_bits.c)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint8_t', '\\x01'])
+        self.expect("expr (more_bits.d)", VARIABLES_DISPLAYED_CORRECTLY,
+            substrs = ['uint8_t', '\\0'])
+
+    @add_test_categories(['pyapi'])
+    @skipIfWindows # BitFields exhibit crashes in record layout on Windows (http://llvm.org/pr21800)
+    def test_and_python_api(self):
+        """Use Python APIs to inspect a bitfields variable."""
+        self.build()
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        breakpoint = target.BreakpointCreateByLocation("main.c", self.line)
+        self.assertTrue(breakpoint, VALID_BREAKPOINT)
+
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.assertTrue(process, PROCESS_IS_VALID)
+
+        # The stop reason of the thread should be breakpoint.
+        thread = target.GetProcess().GetThreadAtIndex(0)
+        if thread.GetStopReason() != lldb.eStopReasonBreakpoint:
+            from lldbsuite.test.lldbutil import stop_reason_to_str
+            self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS %
+                      stop_reason_to_str(thread.GetStopReason()))
+
+        # The breakpoint should have a hit count of 1.
+        self.assertTrue(breakpoint.GetHitCount() == 1, BREAKPOINT_HIT_ONCE)
+
+        # Lookup the "bits" variable which contains 8 bitfields.
+        frame = thread.GetFrameAtIndex(0)
+        bits = frame.FindVariable("bits")
+        self.DebugSBValue(bits)
+        self.assertTrue(bits.GetTypeName() == 'Bits', "bits.GetTypeName() == 'Bits'");
+        self.assertTrue(bits.GetNumChildren() == 10, "bits.GetNumChildren() == 10");
+        test_compiler = self.getCompiler()
+        self.assertTrue(bits.GetByteSize() == 32, "bits.GetByteSize() == 32");
+
+        # Notice the pattern of int(b1.GetValue(), 0).  We pass a base of 0
+        # so that the proper radix is determined based on the contents of the
+        # string.
+        b1 = bits.GetChildMemberWithName("b1")
+        self.DebugSBValue(b1)
+        self.assertTrue(b1.GetName() == "b1" and
+                        b1.GetTypeName() == "uint32_t:1" and
+                        b1.IsInScope() and
+                        int(b1.GetValue(), 0) == 1,
+                        'bits.b1 has type uint32_t:1, is in scope, and == 1')
+
+        b7 = bits.GetChildMemberWithName("b7")
+        self.DebugSBValue(b7)
+        self.assertTrue(b7.GetName() == "b7" and
+                        b7.GetTypeName() == "uint32_t:7" and
+                        b7.IsInScope() and
+                        int(b7.GetValue(), 0) == 127,
+                        'bits.b7 has type uint32_t:7, is in scope, and == 127')
+
+        four = bits.GetChildMemberWithName("four")
+        self.DebugSBValue(four)
+        self.assertTrue(four.GetName() == "four" and
+                        four.GetTypeName() == "uint32_t:4" and
+                        four.IsInScope() and
+                        int(four.GetValue(), 0) == 15,
+                        'bits.four has type uint32_t:4, is in scope, and == 15')
+
+        # Now kill the process, and we are done.
+        rc = target.GetProcess().Kill()
+        self.assertTrue(rc.Success())
diff --git a/packages/Python/lldbsuite/test/lang/c/bitfields/main.c b/packages/Python/lldbsuite/test/lang/c/bitfields/main.c
new file mode 100644
index 000000000000..26c0176d759c
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/c/bitfields/main.c
@@ -0,0 +1,67 @@
+//===-- main.c --------------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#include <stdint.h>
+#include <stdio.h>
+int main (int argc, char const *argv[])
+{
+    struct Bits
+    {
+        uint32_t    : 1, // Unnamed bitfield
+                    b1 : 1,
+                    b2 : 2,
+                    : 2, // Unnamed bitfield
+                    b3 : 3,
+                    : 2, // Unnamed bitfield (this will get removed)
+                    b4 __attribute__ ((aligned(16))),
+                    b5 : 5,
+                    b6 : 6,
+                    b7 : 7,
+                    four : 4;
+    };
+
+    printf("%lu", sizeof(struct Bits));
+
+    struct Bits bits;
+    int i;
+    for (i=0; i<(1<<1); i++)
+        bits.b1 = i;        //// break $source:$line
+    for (i=0; i<(1<<2); i++)
+        bits.b2 = i;        //// break $source:$line
+    for (i=0; i<(1<<3); i++)
+        bits.b3 = i;        //// break $source:$line
+    for (i=0; i<(1<<4); i++)
+        bits.b4 = i;        //// break $source:$line
+    for (i=0; i<(1<<5); i++)
+        bits.b5 = i;        //// break $source:$line
+    for (i=0; i<(1<<6); i++)
+        bits.b6 = i;        //// break $source:$line
+    for (i=0; i<(1<<7); i++)
+        bits.b7 = i;        //// break $source:$line
+    for (i=0; i<(1<<4); i++)
+        bits.four = i;      //// break $source:$line
+
+    struct MoreBits
+    {
+        uint32_t    a : 3;
+        uint8_t       : 1;
+        uint8_t     b : 1;
+        uint8_t     c : 1;
+        uint8_t     d : 1;
+    };
+
+    struct MoreBits more_bits;
+
+    more_bits.a = 3;
+    more_bits.b = 0;
+    more_bits.c = 1;
+    more_bits.d = 0;
+
+    return 0;               //// Set break point at this line.
+
+}