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1153 lines
35 KiB
1153 lines
35 KiB
4 months ago
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//===-- Cocoa.cpp ---------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Cocoa.h"
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#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
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#include "lldb/Core/Mangled.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Core/ValueObjectConstResult.h"
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#include "lldb/DataFormatters/FormattersHelpers.h"
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#include "lldb/DataFormatters/StringPrinter.h"
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#include "lldb/DataFormatters/TypeSummary.h"
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#include "lldb/Host/Time.h"
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#include "lldb/Target/Language.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/ProcessStructReader.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/Utility/Stream.h"
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#include "llvm/ADT/APInt.h"
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#include "llvm/ADT/bit.h"
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#include "Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntime.h"
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#include "NSString.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::formatters;
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bool lldb_private::formatters::NSBundleSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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llvm::StringRef class_name(descriptor->GetClassName().GetCString());
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if (class_name.empty())
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return false;
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if (class_name == "NSBundle") {
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uint64_t offset = 5 * ptr_size;
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ValueObjectSP text(valobj.GetSyntheticChildAtOffset(
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offset,
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valobj.GetCompilerType().GetBasicTypeFromAST(lldb::eBasicTypeObjCID),
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true));
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if (!text)
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return false;
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StreamString summary_stream;
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bool was_nsstring_ok =
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NSStringSummaryProvider(*text, summary_stream, options);
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if (was_nsstring_ok && summary_stream.GetSize() > 0) {
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stream.Printf("%s", summary_stream.GetData());
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return true;
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}
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}
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return false;
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}
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bool lldb_private::formatters::NSTimeZoneSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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llvm::StringRef class_name(descriptor->GetClassName().GetCString());
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if (class_name.empty())
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return false;
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if (class_name == "__NSTimeZone") {
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uint64_t offset = ptr_size;
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ValueObjectSP text(valobj.GetSyntheticChildAtOffset(
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offset, valobj.GetCompilerType(), true));
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if (!text)
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return false;
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StreamString summary_stream;
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bool was_nsstring_ok =
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NSStringSummaryProvider(*text, summary_stream, options);
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if (was_nsstring_ok && summary_stream.GetSize() > 0) {
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stream.Printf("%s", summary_stream.GetData());
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return true;
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}
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}
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return false;
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}
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bool lldb_private::formatters::NSNotificationSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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llvm::StringRef class_name(descriptor->GetClassName().GetCString());
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if (class_name.empty())
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return false;
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if (class_name == "NSConcreteNotification") {
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uint64_t offset = ptr_size;
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ValueObjectSP text(valobj.GetSyntheticChildAtOffset(
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offset, valobj.GetCompilerType(), true));
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if (!text)
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return false;
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StreamString summary_stream;
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bool was_nsstring_ok =
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NSStringSummaryProvider(*text, summary_stream, options);
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if (was_nsstring_ok && summary_stream.GetSize() > 0) {
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stream.Printf("%s", summary_stream.GetData());
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return true;
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}
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}
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return false;
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}
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bool lldb_private::formatters::NSMachPortSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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llvm::StringRef class_name(descriptor->GetClassName().GetCString());
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if (class_name.empty())
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return false;
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uint64_t port_number = 0;
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if (class_name == "NSMachPort") {
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uint64_t offset = (ptr_size == 4 ? 12 : 20);
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Status error;
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port_number = process_sp->ReadUnsignedIntegerFromMemory(
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offset + valobj_addr, 4, 0, error);
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if (error.Success()) {
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stream.Printf("mach port: %u",
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(uint32_t)(port_number & 0x00000000FFFFFFFF));
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return true;
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}
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}
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return false;
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}
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bool lldb_private::formatters::NSIndexSetSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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llvm::StringRef class_name(descriptor->GetClassName().GetCString());
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if (class_name.empty())
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return false;
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uint64_t count = 0;
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do {
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if (class_name == "NSIndexSet" || class_name == "NSMutableIndexSet") {
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Status error;
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uint32_t mode = process_sp->ReadUnsignedIntegerFromMemory(
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valobj_addr + ptr_size, 4, 0, error);
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if (error.Fail())
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return false;
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// this means the set is empty - count = 0
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if ((mode & 1) == 1) {
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count = 0;
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break;
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}
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if ((mode & 2) == 2)
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mode = 1; // this means the set only has one range
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else
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mode = 2; // this means the set has multiple ranges
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if (mode == 1) {
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count = process_sp->ReadUnsignedIntegerFromMemory(
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valobj_addr + 3 * ptr_size, ptr_size, 0, error);
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if (error.Fail())
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return false;
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} else {
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// read a pointer to the data at 2*ptr_size
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count = process_sp->ReadUnsignedIntegerFromMemory(
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valobj_addr + 2 * ptr_size, ptr_size, 0, error);
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if (error.Fail())
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return false;
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// read the data at 2*ptr_size from the first location
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count = process_sp->ReadUnsignedIntegerFromMemory(count + 2 * ptr_size,
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ptr_size, 0, error);
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if (error.Fail())
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return false;
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}
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} else
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return false;
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} while (false);
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stream.Printf("%" PRIu64 " index%s", count, (count == 1 ? "" : "es"));
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return true;
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}
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static void NSNumber_FormatChar(ValueObject &valobj, Stream &stream, char value,
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lldb::LanguageType lang) {
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static ConstString g_TypeHint("NSNumber:char");
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(lang)) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s%hhd%s", prefix.c_str(), value, suffix.c_str());
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}
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static void NSNumber_FormatShort(ValueObject &valobj, Stream &stream,
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short value, lldb::LanguageType lang) {
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static ConstString g_TypeHint("NSNumber:short");
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(lang)) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s%hd%s", prefix.c_str(), value, suffix.c_str());
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}
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static void NSNumber_FormatInt(ValueObject &valobj, Stream &stream, int value,
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lldb::LanguageType lang) {
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static ConstString g_TypeHint("NSNumber:int");
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(lang)) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s%d%s", prefix.c_str(), value, suffix.c_str());
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}
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static void NSNumber_FormatLong(ValueObject &valobj, Stream &stream,
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uint64_t value, lldb::LanguageType lang) {
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static ConstString g_TypeHint("NSNumber:long");
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(lang)) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s%" PRId64 "%s", prefix.c_str(), value, suffix.c_str());
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}
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static void NSNumber_FormatInt128(ValueObject &valobj, Stream &stream,
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const llvm::APInt &value,
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lldb::LanguageType lang) {
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|
static ConstString g_TypeHint("NSNumber:int128_t");
|
||
|
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||
|
std::string prefix, suffix;
|
||
|
if (Language *language = Language::FindPlugin(lang)) {
|
||
|
if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
|
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|
suffix)) {
|
||
|
prefix.clear();
|
||
|
suffix.clear();
|
||
|
}
|
||
|
}
|
||
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|
||
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stream.PutCString(prefix.c_str());
|
||
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const int radix = 10;
|
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const bool isSigned = true;
|
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std::string str = value.toString(radix, isSigned);
|
||
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stream.PutCString(str.c_str());
|
||
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stream.PutCString(suffix.c_str());
|
||
|
}
|
||
|
|
||
|
static void NSNumber_FormatFloat(ValueObject &valobj, Stream &stream,
|
||
|
float value, lldb::LanguageType lang) {
|
||
|
static ConstString g_TypeHint("NSNumber:float");
|
||
|
|
||
|
std::string prefix, suffix;
|
||
|
if (Language *language = Language::FindPlugin(lang)) {
|
||
|
if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
|
||
|
suffix)) {
|
||
|
prefix.clear();
|
||
|
suffix.clear();
|
||
|
}
|
||
|
}
|
||
|
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||
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stream.Printf("%s%f%s", prefix.c_str(), value, suffix.c_str());
|
||
|
}
|
||
|
|
||
|
static void NSNumber_FormatDouble(ValueObject &valobj, Stream &stream,
|
||
|
double value, lldb::LanguageType lang) {
|
||
|
static ConstString g_TypeHint("NSNumber:double");
|
||
|
|
||
|
std::string prefix, suffix;
|
||
|
if (Language *language = Language::FindPlugin(lang)) {
|
||
|
if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
|
||
|
suffix)) {
|
||
|
prefix.clear();
|
||
|
suffix.clear();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
stream.Printf("%s%g%s", prefix.c_str(), value, suffix.c_str());
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSNumberSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
ProcessSP process_sp = valobj.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
|
||
|
|
||
|
if (!runtime)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime::ClassDescriptorSP descriptor(
|
||
|
runtime->GetClassDescriptor(valobj));
|
||
|
|
||
|
if (!descriptor || !descriptor->IsValid())
|
||
|
return false;
|
||
|
|
||
|
uint32_t ptr_size = process_sp->GetAddressByteSize();
|
||
|
|
||
|
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
|
||
|
|
||
|
if (!valobj_addr)
|
||
|
return false;
|
||
|
|
||
|
llvm::StringRef class_name(descriptor->GetClassName().GetCString());
|
||
|
|
||
|
if (class_name.empty())
|
||
|
return false;
|
||
|
|
||
|
if (class_name == "__NSCFBoolean")
|
||
|
return ObjCBooleanSummaryProvider(valobj, stream, options);
|
||
|
|
||
|
if (class_name == "NSDecimalNumber")
|
||
|
return NSDecimalNumberSummaryProvider(valobj, stream, options);
|
||
|
|
||
|
if (class_name == "NSNumber" || class_name == "__NSCFNumber") {
|
||
|
uint64_t value = 0;
|
||
|
uint64_t i_bits = 0;
|
||
|
if (descriptor->GetTaggedPointerInfo(&i_bits, &value)) {
|
||
|
switch (i_bits) {
|
||
|
case 0:
|
||
|
NSNumber_FormatChar(valobj, stream, (char)value, options.GetLanguage());
|
||
|
break;
|
||
|
case 1:
|
||
|
case 4:
|
||
|
NSNumber_FormatShort(valobj, stream, (short)value,
|
||
|
options.GetLanguage());
|
||
|
break;
|
||
|
case 2:
|
||
|
case 8:
|
||
|
NSNumber_FormatInt(valobj, stream, (int)value, options.GetLanguage());
|
||
|
break;
|
||
|
case 3:
|
||
|
case 12:
|
||
|
NSNumber_FormatLong(valobj, stream, value, options.GetLanguage());
|
||
|
break;
|
||
|
default:
|
||
|
return false;
|
||
|
}
|
||
|
return true;
|
||
|
} else {
|
||
|
Status error;
|
||
|
|
||
|
AppleObjCRuntime *runtime = llvm::dyn_cast_or_null<AppleObjCRuntime>(
|
||
|
ObjCLanguageRuntime::Get(*process_sp));
|
||
|
|
||
|
const bool new_format =
|
||
|
(runtime && runtime->GetFoundationVersion() >= 1400);
|
||
|
|
||
|
enum class TypeCodes : int {
|
||
|
sint8 = 0x0,
|
||
|
sint16 = 0x1,
|
||
|
sint32 = 0x2,
|
||
|
sint64 = 0x3,
|
||
|
f32 = 0x4,
|
||
|
f64 = 0x5,
|
||
|
sint128 = 0x6
|
||
|
};
|
||
|
|
||
|
uint64_t data_location = valobj_addr + 2 * ptr_size;
|
||
|
TypeCodes type_code;
|
||
|
|
||
|
if (new_format) {
|
||
|
uint64_t cfinfoa =
|
||
|
process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size,
|
||
|
ptr_size, 0, error);
|
||
|
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
|
||
|
bool is_preserved_number = cfinfoa & 0x8;
|
||
|
if (is_preserved_number) {
|
||
|
lldbassert(!static_cast<bool>("We should handle preserved numbers!"));
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
type_code = static_cast<TypeCodes>(cfinfoa & 0x7);
|
||
|
} else {
|
||
|
uint8_t data_type =
|
||
|
process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size, 1,
|
||
|
0, error) & 0x1F;
|
||
|
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
|
||
|
switch (data_type) {
|
||
|
case 1: type_code = TypeCodes::sint8; break;
|
||
|
case 2: type_code = TypeCodes::sint16; break;
|
||
|
case 3: type_code = TypeCodes::sint32; break;
|
||
|
case 17: data_location += 8; LLVM_FALLTHROUGH;
|
||
|
case 4: type_code = TypeCodes::sint64; break;
|
||
|
case 5: type_code = TypeCodes::f32; break;
|
||
|
case 6: type_code = TypeCodes::f64; break;
|
||
|
default: return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
uint64_t value = 0;
|
||
|
bool success = false;
|
||
|
switch (type_code) {
|
||
|
case TypeCodes::sint8:
|
||
|
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 1, 0,
|
||
|
error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
NSNumber_FormatChar(valobj, stream, (char)value, options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
case TypeCodes::sint16:
|
||
|
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 2, 0,
|
||
|
error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
NSNumber_FormatShort(valobj, stream, (short)value,
|
||
|
options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
case TypeCodes::sint32:
|
||
|
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 4, 0,
|
||
|
error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
NSNumber_FormatInt(valobj, stream, (int)value, options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
case TypeCodes::sint64:
|
||
|
value = process_sp->ReadUnsignedIntegerFromMemory(data_location, 8, 0,
|
||
|
error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
NSNumber_FormatLong(valobj, stream, value, options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
case TypeCodes::f32:
|
||
|
{
|
||
|
uint32_t flt_as_int = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
data_location, 4, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
float flt_value = 0.0f;
|
||
|
memcpy(&flt_value, &flt_as_int, sizeof(flt_as_int));
|
||
|
NSNumber_FormatFloat(valobj, stream, flt_value, options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
}
|
||
|
case TypeCodes::f64:
|
||
|
{
|
||
|
uint64_t dbl_as_lng = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
data_location, 8, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
double dbl_value = 0.0;
|
||
|
memcpy(&dbl_value, &dbl_as_lng, sizeof(dbl_as_lng));
|
||
|
NSNumber_FormatDouble(valobj, stream, dbl_value, options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
}
|
||
|
case TypeCodes::sint128: // internally, this is the same
|
||
|
{
|
||
|
uint64_t words[2];
|
||
|
words[1] = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
data_location, 8, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
words[0] = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
data_location + 8, 8, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
llvm::APInt i128_value(128, words);
|
||
|
NSNumber_FormatInt128(valobj, stream, i128_value, options.GetLanguage());
|
||
|
success = true;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
return success;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSDecimalNumberSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
ProcessSP process_sp = valobj.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
|
||
|
uint32_t ptr_size = process_sp->GetAddressByteSize();
|
||
|
|
||
|
Status error;
|
||
|
int8_t exponent = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
valobj_addr + ptr_size, 1, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
|
||
|
uint8_t length_and_negative = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
valobj_addr + ptr_size + 1, 1, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
|
||
|
// Fifth bit marks negativity.
|
||
|
const bool is_negative = (length_and_negative >> 4) & 1;
|
||
|
|
||
|
// Zero length and negative means NaN.
|
||
|
uint8_t length = length_and_negative & 0xf;
|
||
|
const bool is_nan = is_negative && (length == 0);
|
||
|
|
||
|
if (is_nan) {
|
||
|
stream.Printf("NaN");
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
if (length == 0) {
|
||
|
stream.Printf("0");
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
uint64_t mantissa = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
valobj_addr + ptr_size + 4, 8, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
|
||
|
if (is_negative)
|
||
|
stream.Printf("-");
|
||
|
|
||
|
stream.Printf("%" PRIu64 " x 10^%" PRIi8, mantissa, exponent);
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSURLSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
ProcessSP process_sp = valobj.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
|
||
|
|
||
|
if (!runtime)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime::ClassDescriptorSP descriptor(
|
||
|
runtime->GetClassDescriptor(valobj));
|
||
|
|
||
|
if (!descriptor || !descriptor->IsValid())
|
||
|
return false;
|
||
|
|
||
|
uint32_t ptr_size = process_sp->GetAddressByteSize();
|
||
|
|
||
|
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
|
||
|
|
||
|
if (!valobj_addr)
|
||
|
return false;
|
||
|
|
||
|
llvm::StringRef class_name = descriptor->GetClassName().GetStringRef();
|
||
|
|
||
|
if (!class_name.equals("NSURL"))
|
||
|
return false;
|
||
|
|
||
|
uint64_t offset_text = ptr_size + ptr_size +
|
||
|
8; // ISA + pointer + 8 bytes of data (even on 32bit)
|
||
|
uint64_t offset_base = offset_text + ptr_size;
|
||
|
CompilerType type(valobj.GetCompilerType());
|
||
|
ValueObjectSP text(valobj.GetSyntheticChildAtOffset(offset_text, type, true));
|
||
|
ValueObjectSP base(valobj.GetSyntheticChildAtOffset(offset_base, type, true));
|
||
|
if (!text || text->GetValueAsUnsigned(0) == 0)
|
||
|
return false;
|
||
|
|
||
|
StreamString base_summary;
|
||
|
if (base && base->GetValueAsUnsigned(0)) {
|
||
|
if (!NSURLSummaryProvider(*base, base_summary, options))
|
||
|
base_summary.Clear();
|
||
|
}
|
||
|
if (base_summary.Empty())
|
||
|
return NSStringSummaryProvider(*text, stream, options);
|
||
|
|
||
|
StreamString summary;
|
||
|
if (!NSStringSummaryProvider(*text, summary, options) || summary.Empty())
|
||
|
return false;
|
||
|
|
||
|
const char quote_char = '"';
|
||
|
std::string prefix, suffix;
|
||
|
if (Language *language = Language::FindPlugin(options.GetLanguage())) {
|
||
|
if (!language->GetFormatterPrefixSuffix(*text, ConstString("NSString"),
|
||
|
prefix, suffix)) {
|
||
|
prefix.clear();
|
||
|
suffix.clear();
|
||
|
}
|
||
|
}
|
||
|
// @"A" -> @"A
|
||
|
llvm::StringRef summary_str = summary.GetString();
|
||
|
bool back_consumed = summary_str.consume_back(quote_char + suffix);
|
||
|
assert(back_consumed);
|
||
|
UNUSED_IF_ASSERT_DISABLED(back_consumed);
|
||
|
// @"B" -> B"
|
||
|
llvm::StringRef base_summary_str = base_summary.GetString();
|
||
|
bool front_consumed = base_summary_str.consume_front(prefix + quote_char);
|
||
|
assert(front_consumed);
|
||
|
UNUSED_IF_ASSERT_DISABLED(front_consumed);
|
||
|
// @"A -- B"
|
||
|
if (!summary_str.empty() && !base_summary_str.empty()) {
|
||
|
stream.Printf("%s -- %s", summary_str.str().c_str(),
|
||
|
base_summary_str.str().c_str());
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
/// Bias value for tagged pointer exponents.
|
||
|
/// Recommended values:
|
||
|
/// 0x3e3: encodes all dates between distantPast and distantFuture
|
||
|
/// except for the range within about 1e-28 second of the reference date.
|
||
|
/// 0x3ef: encodes all dates for a few million years beyond distantPast and
|
||
|
/// distantFuture, except within about 1e-25 second of the reference date.
|
||
|
const int TAGGED_DATE_EXPONENT_BIAS = 0x3ef;
|
||
|
|
||
|
struct DoubleBits {
|
||
|
uint64_t fraction : 52; // unsigned
|
||
|
uint64_t exponent : 11; // signed
|
||
|
uint64_t sign : 1;
|
||
|
};
|
||
|
|
||
|
struct TaggedDoubleBits {
|
||
|
uint64_t fraction : 52; // unsigned
|
||
|
uint64_t exponent : 7; // signed
|
||
|
uint64_t sign : 1;
|
||
|
uint64_t unused : 4; // placeholder for pointer tag bits
|
||
|
};
|
||
|
|
||
|
static uint64_t decodeExponent(uint64_t exp) {
|
||
|
// Tagged exponent field is 7-bit signed. Sign-extend the value to 64 bits
|
||
|
// before performing arithmetic.
|
||
|
return llvm::SignExtend64<7>(exp) + TAGGED_DATE_EXPONENT_BIAS;
|
||
|
}
|
||
|
|
||
|
static double decodeTaggedTimeInterval(uint64_t encodedTimeInterval) {
|
||
|
if (encodedTimeInterval == 0)
|
||
|
return 0.0;
|
||
|
if (encodedTimeInterval == std::numeric_limits<uint64_t>::max())
|
||
|
return (uint64_t)-0.0;
|
||
|
|
||
|
TaggedDoubleBits encodedBits =
|
||
|
llvm::bit_cast<TaggedDoubleBits>(encodedTimeInterval);
|
||
|
assert(encodedBits.unused == 0);
|
||
|
|
||
|
// Sign and fraction are represented exactly.
|
||
|
// Exponent is encoded.
|
||
|
DoubleBits decodedBits;
|
||
|
decodedBits.sign = encodedBits.sign;
|
||
|
decodedBits.fraction = encodedBits.fraction;
|
||
|
decodedBits.exponent = decodeExponent(encodedBits.exponent);
|
||
|
|
||
|
return llvm::bit_cast<double>(decodedBits);
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::NSDateSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
ProcessSP process_sp = valobj.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
|
||
|
|
||
|
if (!runtime)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime::ClassDescriptorSP descriptor(
|
||
|
runtime->GetClassDescriptor(valobj));
|
||
|
|
||
|
if (!descriptor || !descriptor->IsValid())
|
||
|
return false;
|
||
|
|
||
|
uint32_t ptr_size = process_sp->GetAddressByteSize();
|
||
|
|
||
|
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
|
||
|
|
||
|
if (!valobj_addr)
|
||
|
return false;
|
||
|
|
||
|
uint64_t date_value_bits = 0;
|
||
|
double date_value = 0.0;
|
||
|
|
||
|
ConstString class_name = descriptor->GetClassName();
|
||
|
|
||
|
static const ConstString g_NSDate("NSDate");
|
||
|
static const ConstString g___NSDate("__NSDate");
|
||
|
static const ConstString g___NSTaggedDate("__NSTaggedDate");
|
||
|
static const ConstString g_NSCalendarDate("NSCalendarDate");
|
||
|
static const ConstString g_NSConstantDate("NSConstantDate");
|
||
|
|
||
|
if (class_name.IsEmpty())
|
||
|
return false;
|
||
|
|
||
|
uint64_t info_bits = 0, value_bits = 0;
|
||
|
if ((class_name == g_NSDate) || (class_name == g___NSDate) ||
|
||
|
(class_name == g___NSTaggedDate) || (class_name == g_NSConstantDate)) {
|
||
|
if (descriptor->GetTaggedPointerInfo(&info_bits, &value_bits)) {
|
||
|
date_value_bits = ((value_bits << 8) | (info_bits << 4));
|
||
|
memcpy(&date_value, &date_value_bits, sizeof(date_value_bits));
|
||
|
} else {
|
||
|
llvm::Triple triple(
|
||
|
process_sp->GetTarget().GetArchitecture().GetTriple());
|
||
|
uint32_t delta =
|
||
|
(triple.isWatchOS() && triple.isWatchABI()) ? 8 : ptr_size;
|
||
|
Status error;
|
||
|
date_value_bits = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
valobj_addr + delta, 8, 0, error);
|
||
|
memcpy(&date_value, &date_value_bits, sizeof(date_value_bits));
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
}
|
||
|
} else if (class_name == g_NSCalendarDate) {
|
||
|
Status error;
|
||
|
date_value_bits = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
valobj_addr + 2 * ptr_size, 8, 0, error);
|
||
|
memcpy(&date_value, &date_value_bits, sizeof(date_value_bits));
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
} else
|
||
|
return false;
|
||
|
|
||
|
// FIXME: It seems old dates are not formatted according to NSDate's calendar
|
||
|
// so we hardcode distantPast's value so that it looks like LLDB is doing
|
||
|
// the right thing.
|
||
|
|
||
|
// The relative time in seconds from Cocoa Epoch to [NSDate distantPast].
|
||
|
const double RelSecondsFromCocoaEpochToNSDateDistantPast = -63114076800;
|
||
|
if (date_value == RelSecondsFromCocoaEpochToNSDateDistantPast) {
|
||
|
stream.Printf("0001-01-01 00:00:00 UTC");
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
// Accomodate for the __NSTaggedDate format introduced in Foundation 1600.
|
||
|
if (class_name == g___NSTaggedDate) {
|
||
|
auto *runtime = llvm::dyn_cast_or_null<AppleObjCRuntime>(
|
||
|
ObjCLanguageRuntime::Get(*process_sp));
|
||
|
if (runtime && runtime->GetFoundationVersion() >= 1600)
|
||
|
date_value = decodeTaggedTimeInterval(value_bits << 4);
|
||
|
}
|
||
|
|
||
|
// this snippet of code assumes that time_t == seconds since Jan-1-1970 this
|
||
|
// is generally true and POSIXly happy, but might break if a library vendor
|
||
|
// decides to get creative
|
||
|
time_t epoch = GetOSXEpoch();
|
||
|
epoch = epoch + static_cast<time_t>(std::floor(date_value));
|
||
|
tm *tm_date = gmtime(&epoch);
|
||
|
if (!tm_date)
|
||
|
return false;
|
||
|
std::string buffer(1024, 0);
|
||
|
if (strftime(&buffer[0], 1023, "%Z", tm_date) == 0)
|
||
|
return false;
|
||
|
stream.Printf("%04d-%02d-%02d %02d:%02d:%02d %s", tm_date->tm_year + 1900,
|
||
|
tm_date->tm_mon + 1, tm_date->tm_mday, tm_date->tm_hour,
|
||
|
tm_date->tm_min, tm_date->tm_sec, buffer.c_str());
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::ObjCClassSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
ProcessSP process_sp = valobj.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
|
||
|
|
||
|
if (!runtime)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime::ClassDescriptorSP descriptor(
|
||
|
runtime->GetClassDescriptorFromISA(valobj.GetValueAsUnsigned(0)));
|
||
|
|
||
|
if (!descriptor || !descriptor->IsValid())
|
||
|
return false;
|
||
|
|
||
|
ConstString class_name = descriptor->GetClassName();
|
||
|
|
||
|
if (class_name.IsEmpty())
|
||
|
return false;
|
||
|
|
||
|
if (ConstString cs = Mangled(class_name).GetDemangledName())
|
||
|
class_name = cs;
|
||
|
|
||
|
stream.Printf("%s", class_name.AsCString("<unknown class>"));
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
class ObjCClassSyntheticChildrenFrontEnd : public SyntheticChildrenFrontEnd {
|
||
|
public:
|
||
|
ObjCClassSyntheticChildrenFrontEnd(lldb::ValueObjectSP valobj_sp)
|
||
|
: SyntheticChildrenFrontEnd(*valobj_sp) {}
|
||
|
|
||
|
~ObjCClassSyntheticChildrenFrontEnd() override = default;
|
||
|
|
||
|
size_t CalculateNumChildren() override { return 0; }
|
||
|
|
||
|
lldb::ValueObjectSP GetChildAtIndex(size_t idx) override {
|
||
|
return lldb::ValueObjectSP();
|
||
|
}
|
||
|
|
||
|
bool Update() override { return false; }
|
||
|
|
||
|
bool MightHaveChildren() override { return false; }
|
||
|
|
||
|
size_t GetIndexOfChildWithName(ConstString name) override {
|
||
|
return UINT32_MAX;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
SyntheticChildrenFrontEnd *
|
||
|
lldb_private::formatters::ObjCClassSyntheticFrontEndCreator(
|
||
|
CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
|
||
|
return new ObjCClassSyntheticChildrenFrontEnd(valobj_sp);
|
||
|
}
|
||
|
|
||
|
template <bool needs_at>
|
||
|
bool lldb_private::formatters::NSDataSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
ProcessSP process_sp = valobj.GetProcessSP();
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
|
||
|
|
||
|
if (!runtime)
|
||
|
return false;
|
||
|
|
||
|
ObjCLanguageRuntime::ClassDescriptorSP descriptor(
|
||
|
runtime->GetClassDescriptor(valobj));
|
||
|
|
||
|
if (!descriptor || !descriptor->IsValid())
|
||
|
return false;
|
||
|
|
||
|
bool is_64bit = (process_sp->GetAddressByteSize() == 8);
|
||
|
lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
|
||
|
|
||
|
if (!valobj_addr)
|
||
|
return false;
|
||
|
|
||
|
uint64_t value = 0;
|
||
|
|
||
|
llvm::StringRef class_name = descriptor->GetClassName().GetCString();
|
||
|
|
||
|
if (class_name.empty())
|
||
|
return false;
|
||
|
|
||
|
bool isNSConcreteData = class_name == "NSConcreteData";
|
||
|
bool isNSConcreteMutableData = class_name == "NSConcreteMutableData";
|
||
|
bool isNSCFData = class_name == "__NSCFData";
|
||
|
if (isNSConcreteData || isNSConcreteMutableData || isNSCFData) {
|
||
|
uint32_t offset;
|
||
|
if (isNSConcreteData)
|
||
|
offset = is_64bit ? 8 : 4;
|
||
|
else
|
||
|
offset = is_64bit ? 16 : 8;
|
||
|
|
||
|
Status error;
|
||
|
value = process_sp->ReadUnsignedIntegerFromMemory(
|
||
|
valobj_addr + offset, is_64bit ? 8 : 4, 0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
} else if (class_name == "_NSInlineData") {
|
||
|
uint32_t offset = (is_64bit ? 8 : 4);
|
||
|
Status error;
|
||
|
value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + offset, 2,
|
||
|
0, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
} else if (class_name == "_NSZeroData") {
|
||
|
value = 0;
|
||
|
} else
|
||
|
return false;
|
||
|
|
||
|
stream.Printf("%s%" PRIu64 " byte%s%s", (needs_at ? "@\"" : ""), value,
|
||
|
(value != 1 ? "s" : ""), (needs_at ? "\"" : ""));
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::ObjCBOOLSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
const uint32_t type_info = valobj.GetCompilerType().GetTypeInfo();
|
||
|
|
||
|
ValueObjectSP real_guy_sp = valobj.GetSP();
|
||
|
|
||
|
if (type_info & eTypeIsPointer) {
|
||
|
Status err;
|
||
|
real_guy_sp = valobj.Dereference(err);
|
||
|
if (err.Fail() || !real_guy_sp)
|
||
|
return false;
|
||
|
} else if (type_info & eTypeIsReference) {
|
||
|
real_guy_sp = valobj.GetChildAtIndex(0, true);
|
||
|
if (!real_guy_sp)
|
||
|
return false;
|
||
|
}
|
||
|
uint8_t value = (real_guy_sp->GetValueAsUnsigned(0) & 0xFF);
|
||
|
switch (value) {
|
||
|
case 0:
|
||
|
stream.Printf("NO");
|
||
|
break;
|
||
|
case 1:
|
||
|
stream.Printf("YES");
|
||
|
break;
|
||
|
default:
|
||
|
stream.Printf("%u", value);
|
||
|
break;
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
bool lldb_private::formatters::ObjCBooleanSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
lldb::addr_t valobj_ptr_value =
|
||
|
valobj.GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
|
||
|
if (valobj_ptr_value == LLDB_INVALID_ADDRESS)
|
||
|
return false;
|
||
|
|
||
|
ProcessSP process_sp(valobj.GetProcessSP());
|
||
|
if (!process_sp)
|
||
|
return false;
|
||
|
|
||
|
if (AppleObjCRuntime *objc_runtime = llvm::dyn_cast_or_null<AppleObjCRuntime>(
|
||
|
ObjCLanguageRuntime::Get(*process_sp))) {
|
||
|
lldb::addr_t cf_true = LLDB_INVALID_ADDRESS,
|
||
|
cf_false = LLDB_INVALID_ADDRESS;
|
||
|
objc_runtime->GetValuesForGlobalCFBooleans(cf_true, cf_false);
|
||
|
if (valobj_ptr_value == cf_true) {
|
||
|
stream.PutCString("YES");
|
||
|
return true;
|
||
|
}
|
||
|
if (valobj_ptr_value == cf_false) {
|
||
|
stream.PutCString("NO");
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
template <bool is_sel_ptr>
|
||
|
bool lldb_private::formatters::ObjCSELSummaryProvider(
|
||
|
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
|
||
|
lldb::ValueObjectSP valobj_sp;
|
||
|
|
||
|
CompilerType charstar(valobj.GetCompilerType()
|
||
|
.GetBasicTypeFromAST(eBasicTypeChar)
|
||
|
.GetPointerType());
|
||
|
|
||
|
if (!charstar)
|
||
|
return false;
|
||
|
|
||
|
ExecutionContext exe_ctx(valobj.GetExecutionContextRef());
|
||
|
|
||
|
if (is_sel_ptr) {
|
||
|
lldb::addr_t data_address = valobj.GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
|
||
|
if (data_address == LLDB_INVALID_ADDRESS)
|
||
|
return false;
|
||
|
valobj_sp = ValueObject::CreateValueObjectFromAddress("text", data_address,
|
||
|
exe_ctx, charstar);
|
||
|
} else {
|
||
|
DataExtractor data;
|
||
|
Status error;
|
||
|
valobj.GetData(data, error);
|
||
|
if (error.Fail())
|
||
|
return false;
|
||
|
valobj_sp =
|
||
|
ValueObject::CreateValueObjectFromData("text", data, exe_ctx, charstar);
|
||
|
}
|
||
|
|
||
|
if (!valobj_sp)
|
||
|
return false;
|
||
|
|
||
|
stream.Printf("%s", valobj_sp->GetSummaryAsCString());
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
// POSIX has an epoch on Jan-1-1970, but Cocoa prefers Jan-1-2001
|
||
|
// this call gives the POSIX equivalent of the Cocoa epoch
|
||
|
time_t lldb_private::formatters::GetOSXEpoch() {
|
||
|
static time_t epoch = 0;
|
||
|
if (!epoch) {
|
||
|
#ifndef _WIN32
|
||
|
tzset();
|
||
|
tm tm_epoch;
|
||
|
tm_epoch.tm_sec = 0;
|
||
|
tm_epoch.tm_hour = 0;
|
||
|
tm_epoch.tm_min = 0;
|
||
|
tm_epoch.tm_mon = 0;
|
||
|
tm_epoch.tm_mday = 1;
|
||
|
tm_epoch.tm_year = 2001 - 1900;
|
||
|
tm_epoch.tm_isdst = -1;
|
||
|
tm_epoch.tm_gmtoff = 0;
|
||
|
tm_epoch.tm_zone = nullptr;
|
||
|
epoch = timegm(&tm_epoch);
|
||
|
#endif
|
||
|
}
|
||
|
return epoch;
|
||
|
}
|
||
|
|
||
|
template bool lldb_private::formatters::NSDataSummaryProvider<true>(
|
||
|
ValueObject &, Stream &, const TypeSummaryOptions &);
|
||
|
|
||
|
template bool lldb_private::formatters::NSDataSummaryProvider<false>(
|
||
|
ValueObject &, Stream &, const TypeSummaryOptions &);
|
||
|
|
||
|
template bool lldb_private::formatters::ObjCSELSummaryProvider<true>(
|
||
|
ValueObject &, Stream &, const TypeSummaryOptions &);
|
||
|
|
||
|
template bool lldb_private::formatters::ObjCSELSummaryProvider<false>(
|
||
|
ValueObject &, Stream &, const TypeSummaryOptions &);
|