8e0001eb95
- Remove unused parameter `valobj` (I checked downstream, not even swift is using it). - Return a std::pair<StringRef, StringRef> insted of having 2 out parameter strings. - Remove the use of ConstStrings. This change was primarily mechanical except in `ObjCLanguage::GetFormatterPrefixSuffix`. To keep this fast, we construct an llvm::StringMap<std::pair<StringRef, StringRef>> so that we can look things up quickly. There is some amount of cost to setting up the map the first time it is called, but subsequent lookups should be as fast as a hash + string comparison (the cost of looking up something in an llvm::StringMap). Differential Revision: https://reviews.llvm.org/D151603
287 lines
8.6 KiB
C++
287 lines
8.6 KiB
C++
//===-- CF.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 "CF.h"
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#include "Plugins/TypeSystem/Clang/TypeSystemClang.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/Target/Language.h"
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#include "lldb/Target/StackFrame.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 "Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.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::CFAbsoluteTimeSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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time_t epoch = GetOSXEpoch();
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epoch = epoch + (time_t)valobj.GetValueAsSigned(0);
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tm *tm_date = localtime(&epoch);
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if (!tm_date)
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return false;
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std::string buffer(1024, 0);
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if (strftime(&buffer[0], 1023, "%Z", tm_date) == 0)
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return false;
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stream.Printf("%04d-%02d-%02d %02d:%02d:%02d %s", tm_date->tm_year + 1900,
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tm_date->tm_mon + 1, tm_date->tm_mday, tm_date->tm_hour,
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tm_date->tm_min, tm_date->tm_sec, buffer.c_str());
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return true;
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}
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bool lldb_private::formatters::CFBagSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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static constexpr llvm::StringLiteral g_TypeHint("CFBag");
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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.get() || !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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uint32_t count = 0;
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bool is_type_ok = false; // check to see if this is a CFBag we know about
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if (descriptor->IsCFType()) {
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ConstString type_name(valobj.GetTypeName());
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static ConstString g_CFBag("__CFBag");
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static ConstString g_conststruct__CFBag("const struct __CFBag");
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if (type_name == g_CFBag || type_name == g_conststruct__CFBag) {
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if (valobj.IsPointerType())
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is_type_ok = true;
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}
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}
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if (is_type_ok) {
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lldb::addr_t offset = 2 * ptr_size + 4 + valobj_addr;
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Status error;
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count = process_sp->ReadUnsignedIntegerFromMemory(offset, 4, 0, error);
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if (error.Fail())
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return false;
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} else
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return false;
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llvm::StringRef prefix, suffix;
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if (Language *language = Language::FindPlugin(options.GetLanguage()))
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std::tie(prefix, suffix) = language->GetFormatterPrefixSuffix(g_TypeHint);
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stream << prefix;
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stream.Printf("\"%u value%s\"", count, (count == 1 ? "" : "s"));
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stream << suffix;
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return true;
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}
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bool lldb_private::formatters::CFBitVectorSummaryProvider(
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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.get() || !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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uint32_t count = 0;
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bool is_type_ok = false; // check to see if this is a CFBag we know about
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if (descriptor->IsCFType()) {
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ConstString type_name(valobj.GetTypeName());
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if (type_name == "__CFMutableBitVector" || type_name == "__CFBitVector" ||
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type_name == "CFMutableBitVectorRef" || type_name == "CFBitVectorRef") {
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if (valobj.IsPointerType())
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is_type_ok = true;
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}
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}
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if (!is_type_ok)
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return false;
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Status error;
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count = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + 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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uint64_t num_bytes = count / 8 + ((count & 7) ? 1 : 0);
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addr_t data_ptr = process_sp->ReadPointerFromMemory(
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valobj_addr + 2 * ptr_size + 2 * ptr_size, error);
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if (error.Fail())
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return false;
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// make sure we do not try to read huge amounts of data
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if (num_bytes > 1024)
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num_bytes = 1024;
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WritableDataBufferSP buffer_sp(new DataBufferHeap(num_bytes, 0));
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num_bytes =
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process_sp->ReadMemory(data_ptr, buffer_sp->GetBytes(), num_bytes, error);
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if (error.Fail() || num_bytes == 0)
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return false;
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uint8_t *bytes = buffer_sp->GetBytes();
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for (uint64_t byte_idx = 0; byte_idx < num_bytes - 1; byte_idx++) {
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uint8_t byte = bytes[byte_idx];
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bool bit0 = (byte & 1) == 1;
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bool bit1 = (byte & 2) == 2;
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bool bit2 = (byte & 4) == 4;
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bool bit3 = (byte & 8) == 8;
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bool bit4 = (byte & 16) == 16;
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bool bit5 = (byte & 32) == 32;
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bool bit6 = (byte & 64) == 64;
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bool bit7 = (byte & 128) == 128;
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stream.Printf("%c%c%c%c %c%c%c%c ", (bit7 ? '1' : '0'), (bit6 ? '1' : '0'),
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(bit5 ? '1' : '0'), (bit4 ? '1' : '0'), (bit3 ? '1' : '0'),
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(bit2 ? '1' : '0'), (bit1 ? '1' : '0'), (bit0 ? '1' : '0'));
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count -= 8;
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}
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{
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// print the last byte ensuring we do not print spurious bits
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uint8_t byte = bytes[num_bytes - 1];
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bool bit0 = (byte & 1) == 1;
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bool bit1 = (byte & 2) == 2;
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bool bit2 = (byte & 4) == 4;
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bool bit3 = (byte & 8) == 8;
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bool bit4 = (byte & 16) == 16;
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bool bit5 = (byte & 32) == 32;
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bool bit6 = (byte & 64) == 64;
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bool bit7 = (byte & 128) == 128;
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if (count) {
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stream.Printf("%c", bit7 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit6 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit5 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit4 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit3 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit2 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit1 ? '1' : '0');
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count -= 1;
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}
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if (count)
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stream.Printf("%c", bit0 ? '1' : '0');
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}
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return true;
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}
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bool lldb_private::formatters::CFBinaryHeapSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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static constexpr llvm::StringLiteral g_TypeHint("CFBinaryHeap");
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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.get() || !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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uint32_t count = 0;
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bool is_type_ok =
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false; // check to see if this is a CFBinaryHeap we know about
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if (descriptor->IsCFType()) {
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ConstString type_name(valobj.GetTypeName());
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static ConstString g_CFBinaryHeap("__CFBinaryHeap");
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static ConstString g_conststruct__CFBinaryHeap(
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"const struct __CFBinaryHeap");
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static ConstString g_CFBinaryHeapRef("CFBinaryHeapRef");
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if (type_name == g_CFBinaryHeap ||
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type_name == g_conststruct__CFBinaryHeap ||
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type_name == g_CFBinaryHeapRef) {
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if (valobj.IsPointerType())
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is_type_ok = true;
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}
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}
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if (is_type_ok) {
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lldb::addr_t offset = 2 * ptr_size + valobj_addr;
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Status error;
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count = process_sp->ReadUnsignedIntegerFromMemory(offset, 4, 0, error);
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if (error.Fail())
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return false;
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} else
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return false;
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llvm::StringRef prefix, suffix;
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if (Language *language = Language::FindPlugin(options.GetLanguage()))
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std::tie(prefix, suffix) = language->GetFormatterPrefixSuffix(g_TypeHint);
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stream << prefix;
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stream.Printf("\"%u item%s\"", count, (count == 1 ? "" : "s"));
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stream << suffix;
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return true;
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}
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