1 //===-- Block.cpp -----------------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "lldb/Symbol/Block.h"
11 #include "lldb/Core/Module.h"
12 #include "lldb/Core/Section.h"
13 #include "lldb/Symbol/Function.h"
14 #include "lldb/Symbol/SymbolFile.h"
15 #include "lldb/Symbol/SymbolVendor.h"
16 #include "lldb/Symbol/VariableList.h"
17 #include "lldb/Utility/Log.h"
22 using namespace lldb_private;
24 Block::Block(lldb::user_id_t uid)
25 : UserID(uid), m_parent_scope(nullptr), m_children(), m_ranges(),
26 m_inlineInfoSP(), m_variable_list_sp(), m_parsed_block_info(false),
27 m_parsed_block_variables(false), m_parsed_child_blocks(false) {}
31 void Block::GetDescription(Stream *s, Function *function,
32 lldb::DescriptionLevel level, Target *target) const {
33 *s << "id = " << ((const UserID &)*this);
35 size_t num_ranges = m_ranges.GetSize();
38 addr_t base_addr = LLDB_INVALID_ADDRESS;
41 function->GetAddressRange().GetBaseAddress().GetLoadAddress(target);
42 if (base_addr == LLDB_INVALID_ADDRESS)
43 base_addr = function->GetAddressRange().GetBaseAddress().GetFileAddress();
45 s->Printf(", range%s = ", num_ranges > 1 ? "s" : "");
46 for (size_t i = 0; i < num_ranges; ++i) {
47 const Range &range = m_ranges.GetEntryRef(i);
48 s->AddressRange(base_addr + range.GetRangeBase(),
49 base_addr + range.GetRangeEnd(), 4);
53 if (m_inlineInfoSP.get() != nullptr) {
54 bool show_fullpaths = (level == eDescriptionLevelVerbose);
55 m_inlineInfoSP->Dump(s, show_fullpaths);
59 void Block::Dump(Stream *s, addr_t base_addr, int32_t depth,
60 bool show_context) const {
62 Block *parent = GetParent();
64 // We have a depth that is less than zero, print our parent blocks first
65 parent->Dump(s, base_addr, depth + 1, show_context);
69 s->Printf("%p: ", static_cast<const void *>(this));
71 *s << "Block" << static_cast<const UserID &>(*this);
72 const Block *parent_block = GetParent();
74 s->Printf(", parent = {0x%8.8" PRIx64 "}", parent_block->GetID());
76 if (m_inlineInfoSP.get() != nullptr) {
77 bool show_fullpaths = false;
78 m_inlineInfoSP->Dump(s, show_fullpaths);
81 if (!m_ranges.IsEmpty()) {
84 size_t num_ranges = m_ranges.GetSize();
85 for (size_t i = 0; i < num_ranges; ++i) {
86 const Range &range = m_ranges.GetEntryRef(i);
87 if (parent_block != nullptr && !parent_block->Contains(range))
91 s->AddressRange(base_addr + range.GetRangeBase(),
92 base_addr + range.GetRangeEnd(), 4);
100 if (m_variable_list_sp.get()) {
101 m_variable_list_sp->Dump(s, show_context);
104 collection::const_iterator pos, end = m_children.end();
105 for (pos = m_children.begin(); pos != end; ++pos)
106 (*pos)->Dump(s, base_addr, depth - 1, show_context);
112 Block *Block::FindBlockByID(user_id_t block_id) {
113 if (block_id == GetID())
116 Block *matching_block = nullptr;
117 collection::const_iterator pos, end = m_children.end();
118 for (pos = m_children.begin(); pos != end; ++pos) {
119 matching_block = (*pos)->FindBlockByID(block_id);
123 return matching_block;
126 void Block::CalculateSymbolContext(SymbolContext *sc) {
128 m_parent_scope->CalculateSymbolContext(sc);
132 lldb::ModuleSP Block::CalculateSymbolContextModule() {
134 return m_parent_scope->CalculateSymbolContextModule();
135 return lldb::ModuleSP();
138 CompileUnit *Block::CalculateSymbolContextCompileUnit() {
140 return m_parent_scope->CalculateSymbolContextCompileUnit();
144 Function *Block::CalculateSymbolContextFunction() {
146 return m_parent_scope->CalculateSymbolContextFunction();
150 Block *Block::CalculateSymbolContextBlock() { return this; }
152 void Block::DumpSymbolContext(Stream *s) {
153 Function *function = CalculateSymbolContextFunction();
155 function->DumpSymbolContext(s);
156 s->Printf(", Block{0x%8.8" PRIx64 "}", GetID());
159 void Block::DumpAddressRanges(Stream *s, lldb::addr_t base_addr) {
160 if (!m_ranges.IsEmpty()) {
161 size_t num_ranges = m_ranges.GetSize();
162 for (size_t i = 0; i < num_ranges; ++i) {
163 const Range &range = m_ranges.GetEntryRef(i);
164 s->AddressRange(base_addr + range.GetRangeBase(),
165 base_addr + range.GetRangeEnd(), 4);
170 bool Block::Contains(addr_t range_offset) const {
171 return m_ranges.FindEntryThatContains(range_offset) != nullptr;
174 bool Block::Contains(const Block *block) const {
176 return false; // This block doesn't contain itself...
178 // Walk the parent chain for "block" and see if any if them match this block
179 const Block *block_parent;
180 for (block_parent = block->GetParent(); block_parent != nullptr;
181 block_parent = block_parent->GetParent()) {
182 if (this == block_parent)
183 return true; // One of the parents of "block" is this object!
188 bool Block::Contains(const Range &range) const {
189 return m_ranges.FindEntryThatContains(range) != nullptr;
192 Block *Block::GetParent() const {
194 return m_parent_scope->CalculateSymbolContextBlock();
198 Block *Block::GetContainingInlinedBlock() {
199 if (GetInlinedFunctionInfo())
201 return GetInlinedParent();
204 Block *Block::GetInlinedParent() {
205 Block *parent_block = GetParent();
207 if (parent_block->GetInlinedFunctionInfo())
210 return parent_block->GetInlinedParent();
215 Block *Block::GetContainingInlinedBlockWithCallSite(
216 const Declaration &find_call_site) {
217 Block *inlined_block = GetContainingInlinedBlock();
219 while (inlined_block) {
220 const auto *function_info = inlined_block->GetInlinedFunctionInfo();
223 function_info->GetCallSite().FileAndLineEqual(find_call_site))
224 return inlined_block;
225 inlined_block = inlined_block->GetInlinedParent();
230 bool Block::GetRangeContainingOffset(const addr_t offset, Range &range) {
231 const Range *range_ptr = m_ranges.FindEntryThatContains(offset);
240 bool Block::GetRangeContainingAddress(const Address &addr,
241 AddressRange &range) {
242 Function *function = CalculateSymbolContextFunction();
244 const AddressRange &func_range = function->GetAddressRange();
245 if (addr.GetSection() == func_range.GetBaseAddress().GetSection()) {
246 const addr_t addr_offset = addr.GetOffset();
247 const addr_t func_offset = func_range.GetBaseAddress().GetOffset();
248 if (addr_offset >= func_offset &&
249 addr_offset < func_offset + func_range.GetByteSize()) {
250 addr_t offset = addr_offset - func_offset;
252 const Range *range_ptr = m_ranges.FindEntryThatContains(offset);
255 range.GetBaseAddress() = func_range.GetBaseAddress();
256 range.GetBaseAddress().SetOffset(func_offset +
257 range_ptr->GetRangeBase());
258 range.SetByteSize(range_ptr->GetByteSize());
268 bool Block::GetRangeContainingLoadAddress(lldb::addr_t load_addr,
269 Target &target, AddressRange &range) {
270 Address load_address;
271 load_address.SetLoadAddress(load_addr, &target);
272 AddressRange containing_range;
273 return GetRangeContainingAddress(load_address, containing_range);
276 uint32_t Block::GetRangeIndexContainingAddress(const Address &addr) {
277 Function *function = CalculateSymbolContextFunction();
279 const AddressRange &func_range = function->GetAddressRange();
280 if (addr.GetSection() == func_range.GetBaseAddress().GetSection()) {
281 const addr_t addr_offset = addr.GetOffset();
282 const addr_t func_offset = func_range.GetBaseAddress().GetOffset();
283 if (addr_offset >= func_offset &&
284 addr_offset < func_offset + func_range.GetByteSize()) {
285 addr_t offset = addr_offset - func_offset;
286 return m_ranges.FindEntryIndexThatContains(offset);
293 bool Block::GetRangeAtIndex(uint32_t range_idx, AddressRange &range) {
294 if (range_idx < m_ranges.GetSize()) {
295 Function *function = CalculateSymbolContextFunction();
297 const Range &vm_range = m_ranges.GetEntryRef(range_idx);
298 range.GetBaseAddress() = function->GetAddressRange().GetBaseAddress();
299 range.GetBaseAddress().Slide(vm_range.GetRangeBase());
300 range.SetByteSize(vm_range.GetByteSize());
307 bool Block::GetStartAddress(Address &addr) {
308 if (m_ranges.IsEmpty())
311 Function *function = CalculateSymbolContextFunction();
313 addr = function->GetAddressRange().GetBaseAddress();
314 addr.Slide(m_ranges.GetEntryRef(0).GetRangeBase());
320 void Block::FinalizeRanges() {
322 m_ranges.CombineConsecutiveRanges();
325 void Block::AddRange(const Range &range) {
326 Block *parent_block = GetParent();
327 if (parent_block && !parent_block->Contains(range)) {
328 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_SYMBOLS));
330 ModuleSP module_sp(m_parent_scope->CalculateSymbolContextModule());
331 Function *function = m_parent_scope->CalculateSymbolContextFunction();
332 const addr_t function_file_addr =
333 function->GetAddressRange().GetBaseAddress().GetFileAddress();
334 const addr_t block_start_addr = function_file_addr + range.GetRangeBase();
335 const addr_t block_end_addr = function_file_addr + range.GetRangeEnd();
336 Type *func_type = function->GetType();
338 const Declaration &func_decl = func_type->GetDeclaration();
339 if (func_decl.GetLine()) {
340 log->Printf("warning: %s:%u block {0x%8.8" PRIx64
341 "} has range[%u] [0x%" PRIx64 " - 0x%" PRIx64
342 ") which is not contained in parent block {0x%8.8" PRIx64
343 "} in function {0x%8.8" PRIx64 "} from %s",
344 func_decl.GetFile().GetPath().c_str(), func_decl.GetLine(),
345 GetID(), (uint32_t)m_ranges.GetSize(), block_start_addr,
346 block_end_addr, parent_block->GetID(), function->GetID(),
347 module_sp->GetFileSpec().GetPath().c_str());
349 log->Printf("warning: block {0x%8.8" PRIx64
350 "} has range[%u] [0x%" PRIx64 " - 0x%" PRIx64
351 ") which is not contained in parent block {0x%8.8" PRIx64
352 "} in function {0x%8.8" PRIx64 "} from %s",
353 GetID(), (uint32_t)m_ranges.GetSize(), block_start_addr,
354 block_end_addr, parent_block->GetID(), function->GetID(),
355 module_sp->GetFileSpec().GetPath().c_str());
358 parent_block->AddRange(range);
360 m_ranges.Append(range);
363 // Return the current number of bytes that this object occupies in memory
364 size_t Block::MemorySize() const {
365 size_t mem_size = sizeof(Block) + m_ranges.GetSize() * sizeof(Range);
366 if (m_inlineInfoSP.get())
367 mem_size += m_inlineInfoSP->MemorySize();
368 if (m_variable_list_sp.get())
369 mem_size += m_variable_list_sp->MemorySize();
373 void Block::AddChild(const BlockSP &child_block_sp) {
374 if (child_block_sp) {
375 child_block_sp->SetParentScope(this);
376 m_children.push_back(child_block_sp);
380 void Block::SetInlinedFunctionInfo(const char *name, const char *mangled,
381 const Declaration *decl_ptr,
382 const Declaration *call_decl_ptr) {
383 m_inlineInfoSP = std::make_shared<InlineFunctionInfo>(name, mangled, decl_ptr,
387 VariableListSP Block::GetBlockVariableList(bool can_create) {
388 if (!m_parsed_block_variables) {
389 if (m_variable_list_sp.get() == nullptr && can_create) {
390 m_parsed_block_variables = true;
392 CalculateSymbolContext(&sc);
393 assert(sc.module_sp);
394 sc.module_sp->GetSymbolVendor()->ParseVariablesForContext(sc);
397 return m_variable_list_sp;
401 Block::AppendBlockVariables(bool can_create, bool get_child_block_variables,
402 bool stop_if_child_block_is_inlined_function,
403 const std::function<bool(Variable *)> &filter,
404 VariableList *variable_list) {
405 uint32_t num_variables_added = 0;
406 VariableList *block_var_list = GetBlockVariableList(can_create).get();
407 if (block_var_list) {
408 for (size_t i = 0; i < block_var_list->GetSize(); ++i) {
409 VariableSP variable = block_var_list->GetVariableAtIndex(i);
410 if (filter(variable.get())) {
411 num_variables_added++;
412 variable_list->AddVariable(variable);
417 if (get_child_block_variables) {
418 collection::const_iterator pos, end = m_children.end();
419 for (pos = m_children.begin(); pos != end; ++pos) {
420 Block *child_block = pos->get();
421 if (!stop_if_child_block_is_inlined_function ||
422 child_block->GetInlinedFunctionInfo() == nullptr) {
423 num_variables_added += child_block->AppendBlockVariables(
424 can_create, get_child_block_variables,
425 stop_if_child_block_is_inlined_function, filter, variable_list);
429 return num_variables_added;
432 uint32_t Block::AppendVariables(bool can_create, bool get_parent_variables,
433 bool stop_if_block_is_inlined_function,
434 const std::function<bool(Variable *)> &filter,
435 VariableList *variable_list) {
436 uint32_t num_variables_added = 0;
437 VariableListSP variable_list_sp(GetBlockVariableList(can_create));
439 bool is_inlined_function = GetInlinedFunctionInfo() != nullptr;
440 if (variable_list_sp) {
441 for (size_t i = 0; i < variable_list_sp->GetSize(); ++i) {
442 VariableSP variable = variable_list_sp->GetVariableAtIndex(i);
443 if (filter(variable.get())) {
444 num_variables_added++;
445 variable_list->AddVariable(variable);
450 if (get_parent_variables) {
451 if (stop_if_block_is_inlined_function && is_inlined_function)
452 return num_variables_added;
454 Block *parent_block = GetParent();
456 num_variables_added += parent_block->AppendVariables(
457 can_create, get_parent_variables, stop_if_block_is_inlined_function,
458 filter, variable_list);
460 return num_variables_added;
463 SymbolFile *Block::GetSymbolFile() {
464 if (ModuleSP module_sp = CalculateSymbolContextModule())
465 if (SymbolVendor *sym_vendor = module_sp->GetSymbolVendor())
466 return sym_vendor->GetSymbolFile();
470 CompilerDeclContext Block::GetDeclContext() {
471 if (SymbolFile *sym_file = GetSymbolFile())
472 return sym_file->GetDeclContextForUID(GetID());
473 return CompilerDeclContext();
476 void Block::SetBlockInfoHasBeenParsed(bool b, bool set_children) {
477 m_parsed_block_info = b;
479 m_parsed_child_blocks = true;
480 collection::const_iterator pos, end = m_children.end();
481 for (pos = m_children.begin(); pos != end; ++pos)
482 (*pos)->SetBlockInfoHasBeenParsed(b, true);
486 void Block::SetDidParseVariables(bool b, bool set_children) {
487 m_parsed_block_variables = b;
489 collection::const_iterator pos, end = m_children.end();
490 for (pos = m_children.begin(); pos != end; ++pos)
491 (*pos)->SetDidParseVariables(b, true);
495 Block *Block::GetSibling() const {
496 if (m_parent_scope) {
497 Block *parent_block = GetParent();
499 return parent_block->GetSiblingForChild(this);
503 // A parent of child blocks can be asked to find a sibling block given
504 // one of its child blocks
505 Block *Block::GetSiblingForChild(const Block *child_block) const {
506 if (!m_children.empty()) {
507 collection::const_iterator pos, end = m_children.end();
508 for (pos = m_children.begin(); pos != end; ++pos) {
509 if (pos->get() == child_block) {