Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 181 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/examples/summaries/cocoa/NSIndexSet.py b/gnu/llvm/lldb/examples/summaries/cocoa/NSIndexSet.py
new file mode 100644
index 00000000000..25588350c11
--- /dev/null
+++ b/gnu/llvm/lldb/examples/summaries/cocoa/NSIndexSet.py
@@ -0,0 +1,181 @@
+"""
+LLDB AppKit formatters
+
+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
+"""
+# example summary provider for NS(Mutable)IndexSet
+# the real summary is now C++ code built into LLDB
+import lldb
+import ctypes
+import lldb.runtime.objc.objc_runtime
+import lldb.formatters.metrics
+import lldb.formatters.Logger
+
+try:
+    basestring
+except NameError:
+    basestring = str
+
+statistics = lldb.formatters.metrics.Metrics()
+statistics.add_metric('invalid_isa')
+statistics.add_metric('invalid_pointer')
+statistics.add_metric('unknown_class')
+statistics.add_metric('code_notrun')
+
+# despite the similary to synthetic children providers, these classes are not
+# trying to provide anything but the count of values for an NSIndexSet, so they need not
+# obey the interface specification for synthetic children providers
+
+
+class NSIndexSetClass_SummaryProvider:
+
+    def adjust_for_architecture(self):
+        pass
+
+    def __init__(self, valobj, params):
+        logger = lldb.formatters.Logger.Logger()
+        self.valobj = valobj
+        self.sys_params = params
+        if not(self.sys_params.types_cache.NSUInteger):
+            if self.sys_params.is_64_bit:
+                self.sys_params.types_cache.NSUInteger = self.valobj.GetType(
+                ).GetBasicType(lldb.eBasicTypeUnsignedLong)
+                self.sys_params.types_cache.uint32 = self.valobj.GetType(
+                ).GetBasicType(lldb.eBasicTypeUnsignedInt)
+            else:
+                self.sys_params.types_cache.NSUInteger = self.valobj.GetType(
+                ).GetBasicType(lldb.eBasicTypeUnsignedInt)
+                self.sys_params.types_cache.uint32 = self.valobj.GetType(
+                ).GetBasicType(lldb.eBasicTypeUnsignedInt)
+        if not(self.sys_params.types_cache.uint32):
+            self.sys_params.types_cache.uint32 = self.valobj.GetType(
+            ).GetBasicType(lldb.eBasicTypeUnsignedInt)
+        self.update()
+
+    def update(self):
+        logger = lldb.formatters.Logger.Logger()
+        self.adjust_for_architecture()
+
+    # NS(Mutable)IndexSet works in one of two modes: when having a compact block of data (e.g. a Range)
+    # the count is stored in the set itself, 3 pointers into it
+    # otherwise, it will store a pointer to an additional data structure (2 pointers into itself) and this
+    # additional structure will contain the count two pointers deep
+    # a bunch of flags allow us to detect an empty set, vs. a one-range set,
+    # vs. a multi-range set
+    def count(self):
+        logger = lldb.formatters.Logger.Logger()
+        mode_chooser_vo = self.valobj.CreateChildAtOffset(
+            "mode_chooser",
+            self.sys_params.pointer_size,
+            self.sys_params.types_cache.uint32)
+        mode_chooser = mode_chooser_vo.GetValueAsUnsigned(0)
+        if self.sys_params.is_64_bit:
+            mode_chooser = mode_chooser & 0x00000000FFFFFFFF
+        # empty set
+        if mode_chooser & 0x01 == 1:
+            return 0
+        # single range
+        if mode_chooser & 0x02 == 2:
+            mode = 1
+        # multi range
+        else:
+            mode = 2
+        if mode == 1:
+            count_vo = self.valobj.CreateChildAtOffset(
+                "count",
+                3 * self.sys_params.pointer_size,
+                self.sys_params.types_cache.NSUInteger)
+        else:
+            count_ptr = self.valobj.CreateChildAtOffset(
+                "count_ptr",
+                2 * self.sys_params.pointer_size,
+                self.sys_params.types_cache.NSUInteger)
+            count_vo = self.valobj.CreateValueFromAddress(
+                "count",
+                count_ptr.GetValueAsUnsigned() +
+                2 *
+                self.sys_params.pointer_size,
+                self.sys_params.types_cache.NSUInteger)
+        return count_vo.GetValueAsUnsigned(0)
+
+
+class NSIndexSetUnknown_SummaryProvider:
+
+    def adjust_for_architecture(self):
+        pass
+
+    def __init__(self, valobj, params):
+        logger = lldb.formatters.Logger.Logger()
+        self.valobj = valobj
+        self.sys_params = params
+        self.update()
+
+    def update(self):
+        logger = lldb.formatters.Logger.Logger()
+        self.adjust_for_architecture()
+
+    def count(self):
+        logger = lldb.formatters.Logger.Logger()
+        stream = lldb.SBStream()
+        self.valobj.GetExpressionPath(stream)
+        expr = "(int)[" + stream.GetData() + " count]"
+        num_children_vo = self.valobj.CreateValueFromExpression("count", expr)
+        if num_children_vo.IsValid():
+            return num_children_vo.GetValueAsUnsigned(0)
+        return '<variable is not NSIndexSet>'
+
+
+def GetSummary_Impl(valobj):
+    logger = lldb.formatters.Logger.Logger()
+    global statistics
+    class_data, wrapper = lldb.runtime.objc.objc_runtime.Utilities.prepare_class_detection(
+        valobj, statistics)
+    if wrapper:
+        return wrapper
+
+    name_string = class_data.class_name()
+    logger >> "class name is: " + str(name_string)
+
+    if name_string == 'NSIndexSet' or name_string == 'NSMutableIndexSet':
+        wrapper = NSIndexSetClass_SummaryProvider(
+            valobj, class_data.sys_params)
+        statistics.metric_hit('code_notrun', valobj)
+    else:
+        wrapper = NSIndexSetUnknown_SummaryProvider(
+            valobj, class_data.sys_params)
+        statistics.metric_hit(
+            'unknown_class',
+            valobj.GetName() +
+            " seen as " +
+            name_string)
+    return wrapper
+
+
+def NSIndexSet_SummaryProvider(valobj, dict):
+    logger = lldb.formatters.Logger.Logger()
+    provider = GetSummary_Impl(valobj)
+    if provider is not None:
+        if isinstance(
+                provider,
+                lldb.runtime.objc.objc_runtime.SpecialSituation_Description):
+            return provider.message()
+        try:
+            summary = provider.count()
+        except:
+            summary = None
+        logger >> "got summary " + str(summary)
+        if summary is None:
+            summary = '<variable is not NSIndexSet>'
+        if isinstance(summary, basestring):
+            return summary
+        else:
+            summary = str(summary) + (' indexes' if summary != 1 else ' index')
+        return summary
+    return 'Summary Unavailable'
+
+
+def __lldb_init_module(debugger, dict):
+    debugger.HandleCommand(
+        "type summary add -F NSIndexSet.NSIndexSet_SummaryProvider NSIndexSet NSMutableIndexSet")