1 //===-- CommandObjectMemory.cpp ---------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
14 // Other libraries and framework includes
15 #include "clang/AST/Decl.h"
18 #include "CommandObjectMemory.h"
19 #include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h"
20 #include "lldb/Core/Debugger.h"
21 #include "lldb/Core/DumpDataExtractor.h"
22 #include "lldb/Core/Module.h"
23 #include "lldb/Core/Section.h"
24 #include "lldb/Core/ValueObjectMemory.h"
25 #include "lldb/DataFormatters/ValueObjectPrinter.h"
26 #include "lldb/Host/OptionParser.h"
27 #include "lldb/Interpreter/CommandInterpreter.h"
28 #include "lldb/Interpreter/CommandReturnObject.h"
29 #include "lldb/Interpreter/OptionArgParser.h"
30 #include "lldb/Interpreter/OptionGroupFormat.h"
31 #include "lldb/Interpreter/OptionGroupOutputFile.h"
32 #include "lldb/Interpreter/OptionGroupValueObjectDisplay.h"
33 #include "lldb/Interpreter/OptionValueString.h"
34 #include "lldb/Interpreter/Options.h"
35 #include "lldb/Symbol/ClangASTContext.h"
36 #include "lldb/Symbol/SymbolFile.h"
37 #include "lldb/Symbol/TypeList.h"
38 #include "lldb/Target/MemoryHistory.h"
39 #include "lldb/Target/MemoryRegionInfo.h"
40 #include "lldb/Target/Process.h"
41 #include "lldb/Target/StackFrame.h"
42 #include "lldb/Target/Thread.h"
43 #include "lldb/Utility/Args.h"
44 #include "lldb/Utility/DataBufferHeap.h"
45 #include "lldb/Utility/DataBufferLLVM.h"
46 #include "lldb/Utility/StreamString.h"
48 #include "lldb/lldb-private.h"
51 using namespace lldb_private;
53 static OptionDefinition g_read_memory_options[] = {
55 {LLDB_OPT_SET_1, false, "num-per-line", 'l', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeNumberPerLine, "The number of items per line to display." },
56 {LLDB_OPT_SET_2, false, "binary", 'b', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "If true, memory will be saved as binary. If false, the memory is saved save as an ASCII dump that "
57 "uses the format, size, count and number per line settings." },
58 {LLDB_OPT_SET_3, true , "type", 't', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeNone, "The name of a type to view memory as." },
59 {LLDB_OPT_SET_3, false, "offset", 'E', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCount, "How many elements of the specified type to skip before starting to display data." },
62 LLDB_OPT_SET_3, false, "force", 'r', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Necessary if reading over target.max-memory-read-size bytes." },
66 class OptionGroupReadMemory : public OptionGroup {
68 OptionGroupReadMemory()
69 : m_num_per_line(1, 1), m_output_as_binary(false), m_view_as_type(),
72 ~OptionGroupReadMemory() override = default;
74 llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
75 return llvm::makeArrayRef(g_read_memory_options);
78 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_value,
79 ExecutionContext *execution_context) override {
81 const int short_option = g_read_memory_options[option_idx].short_option;
83 switch (short_option) {
85 error = m_num_per_line.SetValueFromString(option_value);
86 if (m_num_per_line.GetCurrentValue() == 0)
87 error.SetErrorStringWithFormat(
88 "invalid value for --num-per-line option '%s'",
89 option_value.str().c_str());
93 m_output_as_binary = true;
97 error = m_view_as_type.SetValueFromString(option_value);
105 error = m_offset.SetValueFromString(option_value);
109 error.SetErrorStringWithFormat("unrecognized short option '%c'",
116 void OptionParsingStarting(ExecutionContext *execution_context) override {
117 m_num_per_line.Clear();
118 m_output_as_binary = false;
119 m_view_as_type.Clear();
124 Status FinalizeSettings(Target *target, OptionGroupFormat &format_options) {
126 OptionValueUInt64 &byte_size_value = format_options.GetByteSizeValue();
127 OptionValueUInt64 &count_value = format_options.GetCountValue();
128 const bool byte_size_option_set = byte_size_value.OptionWasSet();
129 const bool num_per_line_option_set = m_num_per_line.OptionWasSet();
130 const bool count_option_set = format_options.GetCountValue().OptionWasSet();
132 switch (format_options.GetFormat()) {
137 if (!byte_size_option_set)
139 if (!num_per_line_option_set)
141 if (!count_option_set)
142 format_options.GetCountValue() = 8;
148 case eFormatInstruction:
149 if (count_option_set)
150 byte_size_value = target->GetArchitecture().GetMaximumOpcodeByteSize();
154 case eFormatAddressInfo:
155 if (!byte_size_option_set)
156 byte_size_value = target->GetArchitecture().GetAddressByteSize();
158 if (!count_option_set)
159 format_options.GetCountValue() = 8;
163 byte_size_value = target->GetArchitecture().GetAddressByteSize();
164 if (!num_per_line_option_set)
166 if (!count_option_set)
167 format_options.GetCountValue() = 8;
175 case eFormatUnicode16:
176 case eFormatUnicode32:
177 case eFormatUnsigned:
178 case eFormatHexFloat:
179 if (!byte_size_option_set)
181 if (!num_per_line_option_set)
183 if (!count_option_set)
184 format_options.GetCountValue() = 8;
188 case eFormatBytesWithASCII:
189 if (byte_size_option_set) {
190 if (byte_size_value > 1)
191 error.SetErrorStringWithFormat(
192 "display format (bytes/bytes with ASCII) conflicts with the "
193 "specified byte size %" PRIu64 "\n"
194 "\tconsider using a different display format or don't specify "
196 byte_size_value.GetCurrentValue());
199 if (!num_per_line_option_set)
201 if (!count_option_set)
202 format_options.GetCountValue() = 32;
205 case eFormatCharArray:
207 case eFormatCharPrintable:
208 if (!byte_size_option_set)
210 if (!num_per_line_option_set)
212 if (!count_option_set)
213 format_options.GetCountValue() = 64;
217 if (!byte_size_option_set)
219 if (!num_per_line_option_set)
221 if (!count_option_set)
222 format_options.GetCountValue() = 8;
225 case eFormatComplexInteger:
226 if (!byte_size_option_set)
228 if (!num_per_line_option_set)
230 if (!count_option_set)
231 format_options.GetCountValue() = 8;
235 if (!byte_size_option_set)
237 if (!num_per_line_option_set) {
238 switch (byte_size_value) {
254 if (!count_option_set)
258 case eFormatVectorOfChar:
259 case eFormatVectorOfSInt8:
260 case eFormatVectorOfUInt8:
261 case eFormatVectorOfSInt16:
262 case eFormatVectorOfUInt16:
263 case eFormatVectorOfSInt32:
264 case eFormatVectorOfUInt32:
265 case eFormatVectorOfSInt64:
266 case eFormatVectorOfUInt64:
267 case eFormatVectorOfFloat16:
268 case eFormatVectorOfFloat32:
269 case eFormatVectorOfFloat64:
270 case eFormatVectorOfUInt128:
271 if (!byte_size_option_set)
272 byte_size_value = 128;
273 if (!num_per_line_option_set)
275 if (!count_option_set)
282 bool AnyOptionWasSet() const {
283 return m_num_per_line.OptionWasSet() || m_output_as_binary ||
284 m_view_as_type.OptionWasSet() || m_offset.OptionWasSet();
287 OptionValueUInt64 m_num_per_line;
288 bool m_output_as_binary;
289 OptionValueString m_view_as_type;
291 OptionValueUInt64 m_offset;
294 //----------------------------------------------------------------------
295 // Read memory from the inferior process
296 //----------------------------------------------------------------------
297 class CommandObjectMemoryRead : public CommandObjectParsed {
299 CommandObjectMemoryRead(CommandInterpreter &interpreter)
300 : CommandObjectParsed(
301 interpreter, "memory read",
302 "Read from the memory of the current target process.", nullptr,
303 eCommandRequiresTarget | eCommandProcessMustBePaused),
304 m_option_group(), m_format_options(eFormatBytesWithASCII, 1, 8),
305 m_memory_options(), m_outfile_options(), m_varobj_options(),
306 m_next_addr(LLDB_INVALID_ADDRESS), m_prev_byte_size(0),
307 m_prev_format_options(eFormatBytesWithASCII, 1, 8),
308 m_prev_memory_options(), m_prev_outfile_options(),
309 m_prev_varobj_options() {
310 CommandArgumentEntry arg1;
311 CommandArgumentEntry arg2;
312 CommandArgumentData start_addr_arg;
313 CommandArgumentData end_addr_arg;
315 // Define the first (and only) variant of this arg.
316 start_addr_arg.arg_type = eArgTypeAddressOrExpression;
317 start_addr_arg.arg_repetition = eArgRepeatPlain;
319 // There is only one variant this argument could be; put it into the
321 arg1.push_back(start_addr_arg);
323 // Define the first (and only) variant of this arg.
324 end_addr_arg.arg_type = eArgTypeAddressOrExpression;
325 end_addr_arg.arg_repetition = eArgRepeatOptional;
327 // There is only one variant this argument could be; put it into the
329 arg2.push_back(end_addr_arg);
331 // Push the data for the first argument into the m_arguments vector.
332 m_arguments.push_back(arg1);
333 m_arguments.push_back(arg2);
335 // Add the "--format" and "--count" options to group 1 and 3
336 m_option_group.Append(&m_format_options,
337 OptionGroupFormat::OPTION_GROUP_FORMAT |
338 OptionGroupFormat::OPTION_GROUP_COUNT,
339 LLDB_OPT_SET_1 | LLDB_OPT_SET_2 | LLDB_OPT_SET_3);
340 m_option_group.Append(&m_format_options,
341 OptionGroupFormat::OPTION_GROUP_GDB_FMT,
342 LLDB_OPT_SET_1 | LLDB_OPT_SET_3);
343 // Add the "--size" option to group 1 and 2
344 m_option_group.Append(&m_format_options,
345 OptionGroupFormat::OPTION_GROUP_SIZE,
346 LLDB_OPT_SET_1 | LLDB_OPT_SET_2);
347 m_option_group.Append(&m_memory_options);
348 m_option_group.Append(&m_outfile_options, LLDB_OPT_SET_ALL,
349 LLDB_OPT_SET_1 | LLDB_OPT_SET_2 | LLDB_OPT_SET_3);
350 m_option_group.Append(&m_varobj_options, LLDB_OPT_SET_ALL, LLDB_OPT_SET_3);
351 m_option_group.Finalize();
354 ~CommandObjectMemoryRead() override = default;
356 Options *GetOptions() override { return &m_option_group; }
358 const char *GetRepeatCommand(Args ¤t_command_args,
359 uint32_t index) override {
360 return m_cmd_name.c_str();
364 bool DoExecute(Args &command, CommandReturnObject &result) override {
365 // No need to check "target" for validity as eCommandRequiresTarget ensures
367 Target *target = m_exe_ctx.GetTargetPtr();
369 const size_t argc = command.GetArgumentCount();
371 if ((argc == 0 && m_next_addr == LLDB_INVALID_ADDRESS) || argc > 2) {
372 result.AppendErrorWithFormat("%s takes a start address expression with "
373 "an optional end address expression.\n",
375 result.AppendRawWarning("Expressions should be quoted if they contain "
376 "spaces or other special characters.\n");
377 result.SetStatus(eReturnStatusFailed);
381 CompilerType clang_ast_type;
384 const char *view_as_type_cstr =
385 m_memory_options.m_view_as_type.GetCurrentValue();
386 if (view_as_type_cstr && view_as_type_cstr[0]) {
387 // We are viewing memory as a type
390 const bool exact_match = false;
392 uint32_t reference_count = 0;
393 uint32_t pointer_count = 0;
396 #define ALL_KEYWORDS \
398 KEYWORD("volatile") \
399 KEYWORD("restrict") \
404 #define KEYWORD(s) s,
405 static const char *g_keywords[] = {ALL_KEYWORDS};
408 #define KEYWORD(s) (sizeof(s) - 1),
409 static const int g_keyword_lengths[] = {ALL_KEYWORDS};
414 static size_t g_num_keywords = sizeof(g_keywords) / sizeof(const char *);
415 std::string type_str(view_as_type_cstr);
417 // Remove all instances of g_keywords that are followed by spaces
418 for (size_t i = 0; i < g_num_keywords; ++i) {
419 const char *keyword = g_keywords[i];
420 int keyword_len = g_keyword_lengths[i];
423 while ((idx = type_str.find(keyword, idx)) != std::string::npos) {
424 if (type_str[idx + keyword_len] == ' ' ||
425 type_str[idx + keyword_len] == '\t') {
426 type_str.erase(idx, keyword_len + 1);
433 bool done = type_str.empty();
435 idx = type_str.find_first_not_of(" \t");
436 if (idx > 0 && idx != std::string::npos)
437 type_str.erase(0, idx);
439 // Strip trailing spaces
440 if (type_str.empty())
443 switch (type_str[type_str.size() - 1]) {
449 type_str.erase(type_str.size() - 1);
453 if (reference_count == 0) {
455 type_str.erase(type_str.size() - 1);
457 result.AppendErrorWithFormat("invalid type string: '%s'\n",
459 result.SetStatus(eReturnStatusFailed);
471 llvm::DenseSet<lldb_private::SymbolFile *> searched_symbol_files;
472 ConstString lookup_type_name(type_str.c_str());
473 StackFrame *frame = m_exe_ctx.GetFramePtr();
475 sc = frame->GetSymbolContext(eSymbolContextModule);
477 sc.module_sp->FindTypes(sc, lookup_type_name, exact_match, 1,
478 searched_symbol_files, type_list);
481 if (type_list.GetSize() == 0) {
482 target->GetImages().FindTypes(sc, lookup_type_name, exact_match, 1,
483 searched_symbol_files, type_list);
486 if (type_list.GetSize() == 0 && lookup_type_name.GetCString() &&
487 *lookup_type_name.GetCString() == '$') {
488 if (ClangPersistentVariables *persistent_vars =
489 llvm::dyn_cast_or_null<ClangPersistentVariables>(
490 target->GetPersistentExpressionStateForLanguage(
491 lldb::eLanguageTypeC))) {
492 clang::TypeDecl *tdecl = llvm::dyn_cast_or_null<clang::TypeDecl>(
493 persistent_vars->GetPersistentDecl(
494 ConstString(lookup_type_name)));
497 clang_ast_type.SetCompilerType(
498 ClangASTContext::GetASTContext(&tdecl->getASTContext()),
499 reinterpret_cast<lldb::opaque_compiler_type_t>(
500 const_cast<clang::Type *>(tdecl->getTypeForDecl())));
505 if (!clang_ast_type.IsValid()) {
506 if (type_list.GetSize() == 0) {
507 result.AppendErrorWithFormat("unable to find any types that match "
508 "the raw type '%s' for full type '%s'\n",
509 lookup_type_name.GetCString(),
511 result.SetStatus(eReturnStatusFailed);
514 TypeSP type_sp(type_list.GetTypeAtIndex(0));
515 clang_ast_type = type_sp->GetFullCompilerType();
519 while (pointer_count > 0) {
520 CompilerType pointer_type = clang_ast_type.GetPointerType();
521 if (pointer_type.IsValid())
522 clang_ast_type = pointer_type;
524 result.AppendError("unable make a pointer type\n");
525 result.SetStatus(eReturnStatusFailed);
531 m_format_options.GetByteSizeValue() = clang_ast_type.GetByteSize(nullptr);
533 if (m_format_options.GetByteSizeValue() == 0) {
534 result.AppendErrorWithFormat(
535 "unable to get the byte size of the type '%s'\n",
537 result.SetStatus(eReturnStatusFailed);
541 if (!m_format_options.GetCountValue().OptionWasSet())
542 m_format_options.GetCountValue() = 1;
544 error = m_memory_options.FinalizeSettings(target, m_format_options);
547 // Look for invalid combinations of settings
549 result.AppendError(error.AsCString());
550 result.SetStatus(eReturnStatusFailed);
555 size_t total_byte_size = 0;
557 // Use the last address and byte size and all options as they were if no
558 // options have been set
560 total_byte_size = m_prev_byte_size;
561 clang_ast_type = m_prev_clang_ast_type;
562 if (!m_format_options.AnyOptionWasSet() &&
563 !m_memory_options.AnyOptionWasSet() &&
564 !m_outfile_options.AnyOptionWasSet() &&
565 !m_varobj_options.AnyOptionWasSet()) {
566 m_format_options = m_prev_format_options;
567 m_memory_options = m_prev_memory_options;
568 m_outfile_options = m_prev_outfile_options;
569 m_varobj_options = m_prev_varobj_options;
573 size_t item_count = m_format_options.GetCountValue().GetCurrentValue();
575 // TODO For non-8-bit byte addressable architectures this needs to be
576 // revisited to fully support all lldb's range of formatting options.
577 // Furthermore code memory reads (for those architectures) will not be
578 // correctly formatted even w/o formatting options.
579 size_t item_byte_size =
580 target->GetArchitecture().GetDataByteSize() > 1
581 ? target->GetArchitecture().GetDataByteSize()
582 : m_format_options.GetByteSizeValue().GetCurrentValue();
584 const size_t num_per_line =
585 m_memory_options.m_num_per_line.GetCurrentValue();
587 if (total_byte_size == 0) {
588 total_byte_size = item_count * item_byte_size;
589 if (total_byte_size == 0)
590 total_byte_size = 32;
594 addr = OptionArgParser::ToAddress(&m_exe_ctx, command[0].ref,
595 LLDB_INVALID_ADDRESS, &error);
597 if (addr == LLDB_INVALID_ADDRESS) {
598 result.AppendError("invalid start address expression.");
599 result.AppendError(error.AsCString());
600 result.SetStatus(eReturnStatusFailed);
605 lldb::addr_t end_addr = OptionArgParser::ToAddress(
606 &m_exe_ctx, command[1].ref, LLDB_INVALID_ADDRESS, nullptr);
607 if (end_addr == LLDB_INVALID_ADDRESS) {
608 result.AppendError("invalid end address expression.");
609 result.AppendError(error.AsCString());
610 result.SetStatus(eReturnStatusFailed);
612 } else if (end_addr <= addr) {
613 result.AppendErrorWithFormat(
614 "end address (0x%" PRIx64
615 ") must be greater that the start address (0x%" PRIx64 ").\n",
617 result.SetStatus(eReturnStatusFailed);
619 } else if (m_format_options.GetCountValue().OptionWasSet()) {
620 result.AppendErrorWithFormat(
621 "specify either the end address (0x%" PRIx64
622 ") or the count (--count %" PRIu64 "), not both.\n",
623 end_addr, (uint64_t)item_count);
624 result.SetStatus(eReturnStatusFailed);
628 total_byte_size = end_addr - addr;
629 item_count = total_byte_size / item_byte_size;
632 uint32_t max_unforced_size = target->GetMaximumMemReadSize();
634 if (total_byte_size > max_unforced_size && !m_memory_options.m_force) {
635 result.AppendErrorWithFormat(
636 "Normally, \'memory read\' will not read over %" PRIu32
639 result.AppendErrorWithFormat(
640 "Please use --force to override this restriction just once.\n");
641 result.AppendErrorWithFormat("or set target.max-memory-read-size if you "
642 "will often need a larger limit.\n");
646 DataBufferSP data_sp;
647 size_t bytes_read = 0;
648 if (clang_ast_type.GetOpaqueQualType()) {
649 // Make sure we don't display our type as ASCII bytes like the default
651 if (!m_format_options.GetFormatValue().OptionWasSet())
652 m_format_options.GetFormatValue().SetCurrentValue(eFormatDefault);
654 bytes_read = clang_ast_type.GetByteSize(nullptr) *
655 m_format_options.GetCountValue().GetCurrentValue();
658 addr = addr + (clang_ast_type.GetByteSize(nullptr) *
659 m_memory_options.m_offset.GetCurrentValue());
660 } else if (m_format_options.GetFormatValue().GetCurrentValue() !=
662 data_sp.reset(new DataBufferHeap(total_byte_size, '\0'));
663 if (data_sp->GetBytes() == nullptr) {
664 result.AppendErrorWithFormat(
665 "can't allocate 0x%" PRIx32
666 " bytes for the memory read buffer, specify a smaller size to read",
667 (uint32_t)total_byte_size);
668 result.SetStatus(eReturnStatusFailed);
672 Address address(addr, nullptr);
673 bytes_read = target->ReadMemory(address, false, data_sp->GetBytes(),
674 data_sp->GetByteSize(), error);
675 if (bytes_read == 0) {
676 const char *error_cstr = error.AsCString();
677 if (error_cstr && error_cstr[0]) {
678 result.AppendError(error_cstr);
680 result.AppendErrorWithFormat(
681 "failed to read memory from 0x%" PRIx64 ".\n", addr);
683 result.SetStatus(eReturnStatusFailed);
687 if (bytes_read < total_byte_size)
688 result.AppendWarningWithFormat(
689 "Not all bytes (%" PRIu64 "/%" PRIu64
690 ") were able to be read from 0x%" PRIx64 ".\n",
691 (uint64_t)bytes_read, (uint64_t)total_byte_size, addr);
693 // we treat c-strings as a special case because they do not have a fixed
695 if (m_format_options.GetByteSizeValue().OptionWasSet() &&
696 !m_format_options.HasGDBFormat())
697 item_byte_size = m_format_options.GetByteSizeValue().GetCurrentValue();
699 item_byte_size = target->GetMaximumSizeOfStringSummary();
700 if (!m_format_options.GetCountValue().OptionWasSet())
702 data_sp.reset(new DataBufferHeap((item_byte_size + 1) * item_count,
703 '\0')); // account for NULLs as necessary
704 if (data_sp->GetBytes() == nullptr) {
705 result.AppendErrorWithFormat(
706 "can't allocate 0x%" PRIx64
707 " bytes for the memory read buffer, specify a smaller size to read",
708 (uint64_t)((item_byte_size + 1) * item_count));
709 result.SetStatus(eReturnStatusFailed);
712 uint8_t *data_ptr = data_sp->GetBytes();
713 auto data_addr = addr;
714 auto count = item_count;
716 bool break_on_no_NULL = false;
717 while (item_count < count) {
719 buffer.resize(item_byte_size + 1, 0);
721 size_t read = target->ReadCStringFromMemory(data_addr, &buffer[0],
722 item_byte_size + 1, error);
724 result.AppendErrorWithFormat(
725 "failed to read memory from 0x%" PRIx64 ".\n", addr);
726 result.SetStatus(eReturnStatusFailed);
730 if (item_byte_size == read) {
731 result.AppendWarningWithFormat(
732 "unable to find a NULL terminated string at 0x%" PRIx64
733 ".Consider increasing the maximum read length.\n",
736 break_on_no_NULL = true;
738 ++read; // account for final NULL byte
740 memcpy(data_ptr, &buffer[0], read);
744 item_count++; // if we break early we know we only read item_count
747 if (break_on_no_NULL)
750 data_sp.reset(new DataBufferHeap(data_sp->GetBytes(), bytes_read + 1));
753 m_next_addr = addr + bytes_read;
754 m_prev_byte_size = bytes_read;
755 m_prev_format_options = m_format_options;
756 m_prev_memory_options = m_memory_options;
757 m_prev_outfile_options = m_outfile_options;
758 m_prev_varobj_options = m_varobj_options;
759 m_prev_clang_ast_type = clang_ast_type;
761 StreamFile outfile_stream;
762 Stream *output_stream = nullptr;
763 const FileSpec &outfile_spec =
764 m_outfile_options.GetFile().GetCurrentValue();
767 outfile_spec.GetPath(path, sizeof(path));
769 uint32_t open_options =
770 File::eOpenOptionWrite | File::eOpenOptionCanCreate;
771 const bool append = m_outfile_options.GetAppend().GetCurrentValue();
773 open_options |= File::eOpenOptionAppend;
775 if (outfile_stream.GetFile().Open(path, open_options).Success()) {
776 if (m_memory_options.m_output_as_binary) {
777 const size_t bytes_written =
778 outfile_stream.Write(data_sp->GetBytes(), bytes_read);
779 if (bytes_written > 0) {
780 result.GetOutputStream().Printf(
781 "%zi bytes %s to '%s'\n", bytes_written,
782 append ? "appended" : "written", path);
785 result.AppendErrorWithFormat("Failed to write %" PRIu64
787 (uint64_t)bytes_read, path);
788 result.SetStatus(eReturnStatusFailed);
792 // We are going to write ASCII to the file just point the
793 // output_stream to our outfile_stream...
794 output_stream = &outfile_stream;
797 result.AppendErrorWithFormat("Failed to open file '%s' for %s.\n", path,
798 append ? "append" : "write");
799 result.SetStatus(eReturnStatusFailed);
803 output_stream = &result.GetOutputStream();
806 ExecutionContextScope *exe_scope = m_exe_ctx.GetBestExecutionContextScope();
807 if (clang_ast_type.GetOpaqueQualType()) {
808 for (uint32_t i = 0; i < item_count; ++i) {
809 addr_t item_addr = addr + (i * item_byte_size);
810 Address address(item_addr);
811 StreamString name_strm;
812 name_strm.Printf("0x%" PRIx64, item_addr);
813 ValueObjectSP valobj_sp(ValueObjectMemory::Create(
814 exe_scope, name_strm.GetString(), address, clang_ast_type));
816 Format format = m_format_options.GetFormat();
817 if (format != eFormatDefault)
818 valobj_sp->SetFormat(format);
820 DumpValueObjectOptions options(m_varobj_options.GetAsDumpOptions(
821 eLanguageRuntimeDescriptionDisplayVerbosityFull, format));
823 valobj_sp->Dump(*output_stream, options);
825 result.AppendErrorWithFormat(
826 "failed to create a value object for: (%s) %s\n",
827 view_as_type_cstr, name_strm.GetData());
828 result.SetStatus(eReturnStatusFailed);
835 result.SetStatus(eReturnStatusSuccessFinishResult);
836 DataExtractor data(data_sp, target->GetArchitecture().GetByteOrder(),
837 target->GetArchitecture().GetAddressByteSize(),
838 target->GetArchitecture().GetDataByteSize());
840 Format format = m_format_options.GetFormat();
841 if (((format == eFormatChar) || (format == eFormatCharPrintable)) &&
842 (item_byte_size != 1)) {
843 // if a count was not passed, or it is 1
844 if (!m_format_options.GetCountValue().OptionWasSet() || item_count == 1) {
845 // this turns requests such as
846 // memory read -fc -s10 -c1 *charPtrPtr
847 // which make no sense (what is a char of size 10?) into a request for
848 // fetching 10 chars of size 1 from the same memory location
849 format = eFormatCharArray;
850 item_count = item_byte_size;
853 // here we passed a count, and it was not 1 so we have a byte_size and
854 // a count we could well multiply those, but instead let's just fail
855 result.AppendErrorWithFormat(
856 "reading memory as characters of size %" PRIu64 " is not supported",
857 (uint64_t)item_byte_size);
858 result.SetStatus(eReturnStatusFailed);
863 assert(output_stream);
864 size_t bytes_dumped = DumpDataExtractor(
865 data, output_stream, 0, format, item_byte_size, item_count,
866 num_per_line / target->GetArchitecture().GetDataByteSize(), addr, 0, 0,
868 m_next_addr = addr + bytes_dumped;
869 output_stream->EOL();
873 OptionGroupOptions m_option_group;
874 OptionGroupFormat m_format_options;
875 OptionGroupReadMemory m_memory_options;
876 OptionGroupOutputFile m_outfile_options;
877 OptionGroupValueObjectDisplay m_varobj_options;
878 lldb::addr_t m_next_addr;
879 lldb::addr_t m_prev_byte_size;
880 OptionGroupFormat m_prev_format_options;
881 OptionGroupReadMemory m_prev_memory_options;
882 OptionGroupOutputFile m_prev_outfile_options;
883 OptionGroupValueObjectDisplay m_prev_varobj_options;
884 CompilerType m_prev_clang_ast_type;
887 OptionDefinition g_memory_find_option_table[] = {
889 {LLDB_OPT_SET_1, true, "expression", 'e', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeExpression, "Evaluate an expression to obtain a byte pattern."},
890 {LLDB_OPT_SET_2, true, "string", 's', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeName, "Use text to find a byte pattern."},
891 {LLDB_OPT_SET_ALL, false, "count", 'c', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCount, "How many times to perform the search."},
892 {LLDB_OPT_SET_ALL, false, "dump-offset", 'o', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeOffset, "When dumping memory for a match, an offset from the match location to start dumping from."},
896 //----------------------------------------------------------------------
897 // Find the specified data in memory
898 //----------------------------------------------------------------------
899 class CommandObjectMemoryFind : public CommandObjectParsed {
901 class OptionGroupFindMemory : public OptionGroup {
903 OptionGroupFindMemory() : OptionGroup(), m_count(1), m_offset(0) {}
905 ~OptionGroupFindMemory() override = default;
907 llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
908 return llvm::makeArrayRef(g_memory_find_option_table);
911 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_value,
912 ExecutionContext *execution_context) override {
914 const int short_option =
915 g_memory_find_option_table[option_idx].short_option;
917 switch (short_option) {
919 m_expr.SetValueFromString(option_value);
923 m_string.SetValueFromString(option_value);
927 if (m_count.SetValueFromString(option_value).Fail())
928 error.SetErrorString("unrecognized value for count");
932 if (m_offset.SetValueFromString(option_value).Fail())
933 error.SetErrorString("unrecognized value for dump-offset");
937 error.SetErrorStringWithFormat("unrecognized short option '%c'",
944 void OptionParsingStarting(ExecutionContext *execution_context) override {
950 OptionValueString m_expr;
951 OptionValueString m_string;
952 OptionValueUInt64 m_count;
953 OptionValueUInt64 m_offset;
956 CommandObjectMemoryFind(CommandInterpreter &interpreter)
957 : CommandObjectParsed(
958 interpreter, "memory find",
959 "Find a value in the memory of the current target process.",
960 nullptr, eCommandRequiresProcess | eCommandProcessMustBeLaunched),
961 m_option_group(), m_memory_options() {
962 CommandArgumentEntry arg1;
963 CommandArgumentEntry arg2;
964 CommandArgumentData addr_arg;
965 CommandArgumentData value_arg;
967 // Define the first (and only) variant of this arg.
968 addr_arg.arg_type = eArgTypeAddressOrExpression;
969 addr_arg.arg_repetition = eArgRepeatPlain;
971 // There is only one variant this argument could be; put it into the
973 arg1.push_back(addr_arg);
975 // Define the first (and only) variant of this arg.
976 value_arg.arg_type = eArgTypeAddressOrExpression;
977 value_arg.arg_repetition = eArgRepeatPlain;
979 // There is only one variant this argument could be; put it into the
981 arg2.push_back(value_arg);
983 // Push the data for the first argument into the m_arguments vector.
984 m_arguments.push_back(arg1);
985 m_arguments.push_back(arg2);
987 m_option_group.Append(&m_memory_options);
988 m_option_group.Finalize();
991 ~CommandObjectMemoryFind() override = default;
993 Options *GetOptions() override { return &m_option_group; }
996 class ProcessMemoryIterator {
998 ProcessMemoryIterator(ProcessSP process_sp, lldb::addr_t base)
999 : m_process_sp(process_sp), m_base_addr(base), m_is_valid(true) {
1000 lldbassert(process_sp.get() != nullptr);
1003 bool IsValid() { return m_is_valid; }
1005 uint8_t operator[](lldb::addr_t offset) {
1012 m_process_sp->ReadMemory(m_base_addr + offset, &retval, 1, error)) {
1021 ProcessSP m_process_sp;
1022 lldb::addr_t m_base_addr;
1025 bool DoExecute(Args &command, CommandReturnObject &result) override {
1026 // No need to check "process" for validity as eCommandRequiresProcess
1027 // ensures it is valid
1028 Process *process = m_exe_ctx.GetProcessPtr();
1030 const size_t argc = command.GetArgumentCount();
1033 result.AppendError("two addresses needed for memory find");
1038 lldb::addr_t low_addr = OptionArgParser::ToAddress(
1039 &m_exe_ctx, command[0].ref, LLDB_INVALID_ADDRESS, &error);
1040 if (low_addr == LLDB_INVALID_ADDRESS || error.Fail()) {
1041 result.AppendError("invalid low address");
1044 lldb::addr_t high_addr = OptionArgParser::ToAddress(
1045 &m_exe_ctx, command[1].ref, LLDB_INVALID_ADDRESS, &error);
1046 if (high_addr == LLDB_INVALID_ADDRESS || error.Fail()) {
1047 result.AppendError("invalid high address");
1051 if (high_addr <= low_addr) {
1053 "starting address must be smaller than ending address");
1057 lldb::addr_t found_location = LLDB_INVALID_ADDRESS;
1059 DataBufferHeap buffer;
1061 if (m_memory_options.m_string.OptionWasSet())
1062 buffer.CopyData(m_memory_options.m_string.GetStringValue());
1063 else if (m_memory_options.m_expr.OptionWasSet()) {
1064 StackFrame *frame = m_exe_ctx.GetFramePtr();
1065 ValueObjectSP result_sp;
1066 if ((eExpressionCompleted ==
1067 process->GetTarget().EvaluateExpression(
1068 m_memory_options.m_expr.GetStringValue(), frame, result_sp)) &&
1070 uint64_t value = result_sp->GetValueAsUnsigned(0);
1071 switch (result_sp->GetCompilerType().GetByteSize(nullptr)) {
1073 uint8_t byte = (uint8_t)value;
1074 buffer.CopyData(&byte, 1);
1077 uint16_t word = (uint16_t)value;
1078 buffer.CopyData(&word, 2);
1081 uint32_t lword = (uint32_t)value;
1082 buffer.CopyData(&lword, 4);
1085 buffer.CopyData(&value, 8);
1091 result.AppendError("unknown type. pass a string instead");
1095 "result size larger than 8 bytes. pass a string instead");
1100 "expression evaluation failed. pass a string instead");
1105 "please pass either a block of text, or an expression to evaluate.");
1109 size_t count = m_memory_options.m_count.GetCurrentValue();
1110 found_location = low_addr;
1111 bool ever_found = false;
1113 found_location = FastSearch(found_location, high_addr, buffer.GetBytes(),
1114 buffer.GetByteSize());
1115 if (found_location == LLDB_INVALID_ADDRESS) {
1117 result.AppendMessage("data not found within the range.\n");
1118 result.SetStatus(lldb::eReturnStatusSuccessFinishNoResult);
1120 result.AppendMessage("no more matches within the range.\n");
1123 result.AppendMessageWithFormat("data found at location: 0x%" PRIx64 "\n",
1126 DataBufferHeap dumpbuffer(32, 0);
1127 process->ReadMemory(
1128 found_location + m_memory_options.m_offset.GetCurrentValue(),
1129 dumpbuffer.GetBytes(), dumpbuffer.GetByteSize(), error);
1130 if (!error.Fail()) {
1131 DataExtractor data(dumpbuffer.GetBytes(), dumpbuffer.GetByteSize(),
1132 process->GetByteOrder(),
1133 process->GetAddressByteSize());
1135 data, &result.GetOutputStream(), 0, lldb::eFormatBytesWithASCII, 1,
1136 dumpbuffer.GetByteSize(), 16,
1137 found_location + m_memory_options.m_offset.GetCurrentValue(), 0, 0);
1138 result.GetOutputStream().EOL();
1146 result.SetStatus(lldb::eReturnStatusSuccessFinishResult);
1150 lldb::addr_t FastSearch(lldb::addr_t low, lldb::addr_t high, uint8_t *buffer,
1151 size_t buffer_size) {
1152 const size_t region_size = high - low;
1154 if (region_size < buffer_size)
1155 return LLDB_INVALID_ADDRESS;
1157 std::vector<size_t> bad_char_heuristic(256, buffer_size);
1158 ProcessSP process_sp = m_exe_ctx.GetProcessSP();
1159 ProcessMemoryIterator iterator(process_sp, low);
1161 for (size_t idx = 0; idx < buffer_size - 1; idx++) {
1162 decltype(bad_char_heuristic)::size_type bcu_idx = buffer[idx];
1163 bad_char_heuristic[bcu_idx] = buffer_size - idx - 1;
1165 for (size_t s = 0; s <= (region_size - buffer_size);) {
1166 int64_t j = buffer_size - 1;
1167 while (j >= 0 && buffer[j] == iterator[s + j])
1172 s += bad_char_heuristic[iterator[s + buffer_size - 1]];
1175 return LLDB_INVALID_ADDRESS;
1178 OptionGroupOptions m_option_group;
1179 OptionGroupFindMemory m_memory_options;
1182 OptionDefinition g_memory_write_option_table[] = {
1184 {LLDB_OPT_SET_1, true, "infile", 'i', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeFilename, "Write memory using the contents of a file."},
1185 {LLDB_OPT_SET_1, false, "offset", 'o', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeOffset, "Start writing bytes from an offset within the input file."},
1189 //----------------------------------------------------------------------
1190 // Write memory to the inferior process
1191 //----------------------------------------------------------------------
1192 class CommandObjectMemoryWrite : public CommandObjectParsed {
1194 class OptionGroupWriteMemory : public OptionGroup {
1196 OptionGroupWriteMemory() : OptionGroup() {}
1198 ~OptionGroupWriteMemory() override = default;
1200 llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
1201 return llvm::makeArrayRef(g_memory_write_option_table);
1204 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_value,
1205 ExecutionContext *execution_context) override {
1207 const int short_option =
1208 g_memory_write_option_table[option_idx].short_option;
1210 switch (short_option) {
1212 m_infile.SetFile(option_value, true, FileSpec::Style::native);
1213 if (!m_infile.Exists()) {
1215 error.SetErrorStringWithFormat("input file does not exist: '%s'",
1216 option_value.str().c_str());
1221 if (option_value.getAsInteger(0, m_infile_offset)) {
1222 m_infile_offset = 0;
1223 error.SetErrorStringWithFormat("invalid offset string '%s'",
1224 option_value.str().c_str());
1229 error.SetErrorStringWithFormat("unrecognized short option '%c'",
1236 void OptionParsingStarting(ExecutionContext *execution_context) override {
1238 m_infile_offset = 0;
1242 off_t m_infile_offset;
1245 CommandObjectMemoryWrite(CommandInterpreter &interpreter)
1246 : CommandObjectParsed(
1247 interpreter, "memory write",
1248 "Write to the memory of the current target process.", nullptr,
1249 eCommandRequiresProcess | eCommandProcessMustBeLaunched),
1250 m_option_group(), m_format_options(eFormatBytes, 1, UINT64_MAX),
1251 m_memory_options() {
1252 CommandArgumentEntry arg1;
1253 CommandArgumentEntry arg2;
1254 CommandArgumentData addr_arg;
1255 CommandArgumentData value_arg;
1257 // Define the first (and only) variant of this arg.
1258 addr_arg.arg_type = eArgTypeAddress;
1259 addr_arg.arg_repetition = eArgRepeatPlain;
1261 // There is only one variant this argument could be; put it into the
1263 arg1.push_back(addr_arg);
1265 // Define the first (and only) variant of this arg.
1266 value_arg.arg_type = eArgTypeValue;
1267 value_arg.arg_repetition = eArgRepeatPlus;
1269 // There is only one variant this argument could be; put it into the
1271 arg2.push_back(value_arg);
1273 // Push the data for the first argument into the m_arguments vector.
1274 m_arguments.push_back(arg1);
1275 m_arguments.push_back(arg2);
1277 m_option_group.Append(&m_format_options,
1278 OptionGroupFormat::OPTION_GROUP_FORMAT,
1280 m_option_group.Append(&m_format_options,
1281 OptionGroupFormat::OPTION_GROUP_SIZE,
1282 LLDB_OPT_SET_1 | LLDB_OPT_SET_2);
1283 m_option_group.Append(&m_memory_options, LLDB_OPT_SET_ALL, LLDB_OPT_SET_2);
1284 m_option_group.Finalize();
1287 ~CommandObjectMemoryWrite() override = default;
1289 Options *GetOptions() override { return &m_option_group; }
1291 bool UIntValueIsValidForSize(uint64_t uval64, size_t total_byte_size) {
1292 if (total_byte_size > 8)
1295 if (total_byte_size == 8)
1298 const uint64_t max = ((uint64_t)1 << (uint64_t)(total_byte_size * 8)) - 1;
1299 return uval64 <= max;
1302 bool SIntValueIsValidForSize(int64_t sval64, size_t total_byte_size) {
1303 if (total_byte_size > 8)
1306 if (total_byte_size == 8)
1309 const int64_t max = ((int64_t)1 << (uint64_t)(total_byte_size * 8 - 1)) - 1;
1310 const int64_t min = ~(max);
1311 return min <= sval64 && sval64 <= max;
1315 bool DoExecute(Args &command, CommandReturnObject &result) override {
1316 // No need to check "process" for validity as eCommandRequiresProcess
1317 // ensures it is valid
1318 Process *process = m_exe_ctx.GetProcessPtr();
1320 const size_t argc = command.GetArgumentCount();
1322 if (m_memory_options.m_infile) {
1324 result.AppendErrorWithFormat(
1325 "%s takes a destination address when writing file contents.\n",
1326 m_cmd_name.c_str());
1327 result.SetStatus(eReturnStatusFailed);
1330 } else if (argc < 2) {
1331 result.AppendErrorWithFormat(
1332 "%s takes a destination address and at least one value.\n",
1333 m_cmd_name.c_str());
1334 result.SetStatus(eReturnStatusFailed);
1338 StreamString buffer(
1340 process->GetTarget().GetArchitecture().GetAddressByteSize(),
1341 process->GetTarget().GetArchitecture().GetByteOrder());
1343 OptionValueUInt64 &byte_size_value = m_format_options.GetByteSizeValue();
1344 size_t item_byte_size = byte_size_value.GetCurrentValue();
1347 lldb::addr_t addr = OptionArgParser::ToAddress(
1348 &m_exe_ctx, command[0].ref, LLDB_INVALID_ADDRESS, &error);
1350 if (addr == LLDB_INVALID_ADDRESS) {
1351 result.AppendError("invalid address expression\n");
1352 result.AppendError(error.AsCString());
1353 result.SetStatus(eReturnStatusFailed);
1357 if (m_memory_options.m_infile) {
1358 size_t length = SIZE_MAX;
1359 if (item_byte_size > 1)
1360 length = item_byte_size;
1361 auto data_sp = DataBufferLLVM::CreateSliceFromPath(
1362 m_memory_options.m_infile.GetPath(), length,
1363 m_memory_options.m_infile_offset);
1365 length = data_sp->GetByteSize();
1368 size_t bytes_written =
1369 process->WriteMemory(addr, data_sp->GetBytes(), length, error);
1371 if (bytes_written == length) {
1372 // All bytes written
1373 result.GetOutputStream().Printf(
1374 "%" PRIu64 " bytes were written to 0x%" PRIx64 "\n",
1375 (uint64_t)bytes_written, addr);
1376 result.SetStatus(eReturnStatusSuccessFinishResult);
1377 } else if (bytes_written > 0) {
1378 // Some byte written
1379 result.GetOutputStream().Printf(
1380 "%" PRIu64 " bytes of %" PRIu64
1381 " requested were written to 0x%" PRIx64 "\n",
1382 (uint64_t)bytes_written, (uint64_t)length, addr);
1383 result.SetStatus(eReturnStatusSuccessFinishResult);
1385 result.AppendErrorWithFormat("Memory write to 0x%" PRIx64
1387 addr, error.AsCString());
1388 result.SetStatus(eReturnStatusFailed);
1392 result.AppendErrorWithFormat("Unable to read contents of file.\n");
1393 result.SetStatus(eReturnStatusFailed);
1395 return result.Succeeded();
1396 } else if (item_byte_size == 0) {
1397 if (m_format_options.GetFormat() == eFormatPointer)
1398 item_byte_size = buffer.GetAddressByteSize();
1403 command.Shift(); // shift off the address argument
1406 bool success = false;
1407 for (auto &entry : command) {
1408 switch (m_format_options.GetFormat()) {
1410 case eFormatFloat: // TODO: add support for floats soon
1411 case eFormatCharPrintable:
1412 case eFormatBytesWithASCII:
1413 case eFormatComplex:
1415 case eFormatUnicode16:
1416 case eFormatUnicode32:
1417 case eFormatVectorOfChar:
1418 case eFormatVectorOfSInt8:
1419 case eFormatVectorOfUInt8:
1420 case eFormatVectorOfSInt16:
1421 case eFormatVectorOfUInt16:
1422 case eFormatVectorOfSInt32:
1423 case eFormatVectorOfUInt32:
1424 case eFormatVectorOfSInt64:
1425 case eFormatVectorOfUInt64:
1426 case eFormatVectorOfFloat16:
1427 case eFormatVectorOfFloat32:
1428 case eFormatVectorOfFloat64:
1429 case eFormatVectorOfUInt128:
1431 case eFormatComplexInteger:
1432 case eFormatAddressInfo:
1433 case eFormatHexFloat:
1434 case eFormatInstruction:
1436 result.AppendError("unsupported format for writing memory");
1437 result.SetStatus(eReturnStatusFailed);
1440 case eFormatDefault:
1443 case eFormatHexUppercase:
1444 case eFormatPointer:
1447 // Be careful, getAsInteger with a radix of 16 rejects "0xab" so we
1448 // have to special case that:
1449 bool success = false;
1450 if (entry.ref.startswith("0x"))
1451 success = !entry.ref.getAsInteger(0, uval64);
1453 success = !entry.ref.getAsInteger(16, uval64);
1455 result.AppendErrorWithFormat(
1456 "'%s' is not a valid hex string value.\n", entry.c_str());
1457 result.SetStatus(eReturnStatusFailed);
1459 } else if (!UIntValueIsValidForSize(uval64, item_byte_size)) {
1460 result.AppendErrorWithFormat("Value 0x%" PRIx64
1461 " is too large to fit in a %" PRIu64
1462 " byte unsigned integer value.\n",
1463 uval64, (uint64_t)item_byte_size);
1464 result.SetStatus(eReturnStatusFailed);
1467 buffer.PutMaxHex64(uval64, item_byte_size);
1470 case eFormatBoolean:
1471 uval64 = OptionArgParser::ToBoolean(entry.ref, false, &success);
1473 result.AppendErrorWithFormat(
1474 "'%s' is not a valid boolean string value.\n", entry.c_str());
1475 result.SetStatus(eReturnStatusFailed);
1478 buffer.PutMaxHex64(uval64, item_byte_size);
1482 if (entry.ref.getAsInteger(2, uval64)) {
1483 result.AppendErrorWithFormat(
1484 "'%s' is not a valid binary string value.\n", entry.c_str());
1485 result.SetStatus(eReturnStatusFailed);
1487 } else if (!UIntValueIsValidForSize(uval64, item_byte_size)) {
1488 result.AppendErrorWithFormat("Value 0x%" PRIx64
1489 " is too large to fit in a %" PRIu64
1490 " byte unsigned integer value.\n",
1491 uval64, (uint64_t)item_byte_size);
1492 result.SetStatus(eReturnStatusFailed);
1495 buffer.PutMaxHex64(uval64, item_byte_size);
1498 case eFormatCharArray:
1500 case eFormatCString: {
1501 if (entry.ref.empty())
1504 size_t len = entry.ref.size();
1505 // Include the NULL for C strings...
1506 if (m_format_options.GetFormat() == eFormatCString)
1509 if (process->WriteMemory(addr, entry.c_str(), len, error) == len) {
1512 result.AppendErrorWithFormat("Memory write to 0x%" PRIx64
1514 addr, error.AsCString());
1515 result.SetStatus(eReturnStatusFailed);
1520 case eFormatDecimal:
1521 if (entry.ref.getAsInteger(0, sval64)) {
1522 result.AppendErrorWithFormat(
1523 "'%s' is not a valid signed decimal value.\n", entry.c_str());
1524 result.SetStatus(eReturnStatusFailed);
1526 } else if (!SIntValueIsValidForSize(sval64, item_byte_size)) {
1527 result.AppendErrorWithFormat(
1528 "Value %" PRIi64 " is too large or small to fit in a %" PRIu64
1529 " byte signed integer value.\n",
1530 sval64, (uint64_t)item_byte_size);
1531 result.SetStatus(eReturnStatusFailed);
1534 buffer.PutMaxHex64(sval64, item_byte_size);
1537 case eFormatUnsigned:
1539 if (!entry.ref.getAsInteger(0, uval64)) {
1540 result.AppendErrorWithFormat(
1541 "'%s' is not a valid unsigned decimal string value.\n",
1543 result.SetStatus(eReturnStatusFailed);
1545 } else if (!UIntValueIsValidForSize(uval64, item_byte_size)) {
1546 result.AppendErrorWithFormat("Value %" PRIu64
1547 " is too large to fit in a %" PRIu64
1548 " byte unsigned integer value.\n",
1549 uval64, (uint64_t)item_byte_size);
1550 result.SetStatus(eReturnStatusFailed);
1553 buffer.PutMaxHex64(uval64, item_byte_size);
1557 if (entry.ref.getAsInteger(8, uval64)) {
1558 result.AppendErrorWithFormat(
1559 "'%s' is not a valid octal string value.\n", entry.c_str());
1560 result.SetStatus(eReturnStatusFailed);
1562 } else if (!UIntValueIsValidForSize(uval64, item_byte_size)) {
1563 result.AppendErrorWithFormat("Value %" PRIo64
1564 " is too large to fit in a %" PRIu64
1565 " byte unsigned integer value.\n",
1566 uval64, (uint64_t)item_byte_size);
1567 result.SetStatus(eReturnStatusFailed);
1570 buffer.PutMaxHex64(uval64, item_byte_size);
1575 if (!buffer.GetString().empty()) {
1577 if (process->WriteMemory(addr, buffer.GetString().data(),
1578 buffer.GetString().size(),
1579 error) == buffer.GetString().size())
1582 result.AppendErrorWithFormat("Memory write to 0x%" PRIx64
1584 addr, error.AsCString());
1585 result.SetStatus(eReturnStatusFailed);
1592 OptionGroupOptions m_option_group;
1593 OptionGroupFormat m_format_options;
1594 OptionGroupWriteMemory m_memory_options;
1597 //----------------------------------------------------------------------
1598 // Get malloc/free history of a memory address.
1599 //----------------------------------------------------------------------
1600 class CommandObjectMemoryHistory : public CommandObjectParsed {
1602 CommandObjectMemoryHistory(CommandInterpreter &interpreter)
1603 : CommandObjectParsed(
1604 interpreter, "memory history", "Print recorded stack traces for "
1605 "allocation/deallocation events "
1606 "associated with an address.",
1608 eCommandRequiresTarget | eCommandRequiresProcess |
1609 eCommandProcessMustBePaused | eCommandProcessMustBeLaunched) {
1610 CommandArgumentEntry arg1;
1611 CommandArgumentData addr_arg;
1613 // Define the first (and only) variant of this arg.
1614 addr_arg.arg_type = eArgTypeAddress;
1615 addr_arg.arg_repetition = eArgRepeatPlain;
1617 // There is only one variant this argument could be; put it into the
1619 arg1.push_back(addr_arg);
1621 // Push the data for the first argument into the m_arguments vector.
1622 m_arguments.push_back(arg1);
1625 ~CommandObjectMemoryHistory() override = default;
1627 const char *GetRepeatCommand(Args ¤t_command_args,
1628 uint32_t index) override {
1629 return m_cmd_name.c_str();
1633 bool DoExecute(Args &command, CommandReturnObject &result) override {
1634 const size_t argc = command.GetArgumentCount();
1636 if (argc == 0 || argc > 1) {
1637 result.AppendErrorWithFormat("%s takes an address expression",
1638 m_cmd_name.c_str());
1639 result.SetStatus(eReturnStatusFailed);
1644 lldb::addr_t addr = OptionArgParser::ToAddress(
1645 &m_exe_ctx, command[0].ref, LLDB_INVALID_ADDRESS, &error);
1647 if (addr == LLDB_INVALID_ADDRESS) {
1648 result.AppendError("invalid address expression");
1649 result.AppendError(error.AsCString());
1650 result.SetStatus(eReturnStatusFailed);
1654 Stream *output_stream = &result.GetOutputStream();
1656 const ProcessSP &process_sp = m_exe_ctx.GetProcessSP();
1657 const MemoryHistorySP &memory_history =
1658 MemoryHistory::FindPlugin(process_sp);
1660 if (!memory_history) {
1661 result.AppendError("no available memory history provider");
1662 result.SetStatus(eReturnStatusFailed);
1666 HistoryThreads thread_list = memory_history->GetHistoryThreads(addr);
1668 const bool stop_format = false;
1669 for (auto thread : thread_list) {
1670 thread->GetStatus(*output_stream, 0, UINT32_MAX, 0, stop_format);
1673 result.SetStatus(eReturnStatusSuccessFinishResult);
1679 //-------------------------------------------------------------------------
1680 // CommandObjectMemoryRegion
1681 //-------------------------------------------------------------------------
1682 #pragma mark CommandObjectMemoryRegion
1684 class CommandObjectMemoryRegion : public CommandObjectParsed {
1686 CommandObjectMemoryRegion(CommandInterpreter &interpreter)
1687 : CommandObjectParsed(interpreter, "memory region",
1688 "Get information on the memory region containing "
1689 "an address in the current target process.",
1690 "memory region ADDR",
1691 eCommandRequiresProcess | eCommandTryTargetAPILock |
1692 eCommandProcessMustBeLaunched),
1693 m_prev_end_addr(LLDB_INVALID_ADDRESS) {}
1695 ~CommandObjectMemoryRegion() override = default;
1698 bool DoExecute(Args &command, CommandReturnObject &result) override {
1699 ProcessSP process_sp = m_exe_ctx.GetProcessSP();
1702 lldb::addr_t load_addr = m_prev_end_addr;
1703 m_prev_end_addr = LLDB_INVALID_ADDRESS;
1705 const size_t argc = command.GetArgumentCount();
1706 if (argc > 1 || (argc == 0 && load_addr == LLDB_INVALID_ADDRESS)) {
1707 result.AppendErrorWithFormat("'%s' takes one argument:\nUsage: %s\n",
1708 m_cmd_name.c_str(), m_cmd_syntax.c_str());
1709 result.SetStatus(eReturnStatusFailed);
1711 if (command.GetArgumentCount() == 1) {
1712 auto load_addr_str = command[0].ref;
1713 load_addr = OptionArgParser::ToAddress(&m_exe_ctx, load_addr_str,
1714 LLDB_INVALID_ADDRESS, &error);
1715 if (error.Fail() || load_addr == LLDB_INVALID_ADDRESS) {
1716 result.AppendErrorWithFormat(
1717 "invalid address argument \"%s\": %s\n", command[0].c_str(),
1719 result.SetStatus(eReturnStatusFailed);
1723 lldb_private::MemoryRegionInfo range_info;
1724 error = process_sp->GetMemoryRegionInfo(load_addr, range_info);
1725 if (error.Success()) {
1726 lldb_private::Address addr;
1727 ConstString section_name;
1728 if (process_sp->GetTarget().ResolveLoadAddress(load_addr, addr)) {
1729 SectionSP section_sp(addr.GetSection());
1731 // Got the top most section, not the deepest section
1732 while (section_sp->GetParent())
1733 section_sp = section_sp->GetParent();
1734 section_name = section_sp->GetName();
1737 result.AppendMessageWithFormat(
1738 "[0x%16.16" PRIx64 "-0x%16.16" PRIx64 ") %c%c%c%s%s\n",
1739 range_info.GetRange().GetRangeBase(),
1740 range_info.GetRange().GetRangeEnd(),
1741 range_info.GetReadable() ? 'r' : '-',
1742 range_info.GetWritable() ? 'w' : '-',
1743 range_info.GetExecutable() ? 'x' : '-', section_name ? " " : "",
1744 section_name ? section_name.AsCString() : "");
1745 m_prev_end_addr = range_info.GetRange().GetRangeEnd();
1746 result.SetStatus(eReturnStatusSuccessFinishResult);
1748 result.SetStatus(eReturnStatusFailed);
1749 result.AppendErrorWithFormat("%s\n", error.AsCString());
1753 m_prev_end_addr = LLDB_INVALID_ADDRESS;
1754 result.AppendError("invalid process");
1755 result.SetStatus(eReturnStatusFailed);
1757 return result.Succeeded();
1760 const char *GetRepeatCommand(Args ¤t_command_args,
1761 uint32_t index) override {
1762 // If we repeat this command, repeat it without any arguments so we can
1763 // show the next memory range
1764 return m_cmd_name.c_str();
1767 lldb::addr_t m_prev_end_addr;
1770 //-------------------------------------------------------------------------
1771 // CommandObjectMemory
1772 //-------------------------------------------------------------------------
1774 CommandObjectMemory::CommandObjectMemory(CommandInterpreter &interpreter)
1775 : CommandObjectMultiword(
1776 interpreter, "memory",
1777 "Commands for operating on memory in the current target process.",
1778 "memory <subcommand> [<subcommand-options>]") {
1779 LoadSubCommand("find",
1780 CommandObjectSP(new CommandObjectMemoryFind(interpreter)));
1781 LoadSubCommand("read",
1782 CommandObjectSP(new CommandObjectMemoryRead(interpreter)));
1783 LoadSubCommand("write",
1784 CommandObjectSP(new CommandObjectMemoryWrite(interpreter)));
1785 LoadSubCommand("history",
1786 CommandObjectSP(new CommandObjectMemoryHistory(interpreter)));
1787 LoadSubCommand("region",
1788 CommandObjectSP(new CommandObjectMemoryRegion(interpreter)));
1791 CommandObjectMemory::~CommandObjectMemory() = default;