506 lines
16 KiB
C++
506 lines
16 KiB
C++
//===-- Block.cpp -----------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Symbol/Block.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/Section.h"
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#include "lldb/Symbol/Function.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Symbol/SymbolVendor.h"
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#include "lldb/Symbol/VariableList.h"
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#include "lldb/Utility/Log.h"
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using namespace lldb;
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using namespace lldb_private;
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Block::Block(lldb::user_id_t uid)
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: UserID(uid), m_parent_scope(nullptr), m_children(), m_ranges(),
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m_inlineInfoSP(), m_variable_list_sp(), m_parsed_block_info(false),
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m_parsed_block_variables(false), m_parsed_child_blocks(false) {}
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Block::~Block() {}
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void Block::GetDescription(Stream *s, Function *function,
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lldb::DescriptionLevel level, Target *target) const {
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*s << "id = " << ((const UserID &)*this);
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size_t num_ranges = m_ranges.GetSize();
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if (num_ranges > 0) {
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addr_t base_addr = LLDB_INVALID_ADDRESS;
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if (target)
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base_addr =
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function->GetAddressRange().GetBaseAddress().GetLoadAddress(target);
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if (base_addr == LLDB_INVALID_ADDRESS)
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base_addr = function->GetAddressRange().GetBaseAddress().GetFileAddress();
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s->Printf(", range%s = ", num_ranges > 1 ? "s" : "");
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for (size_t i = 0; i < num_ranges; ++i) {
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const Range &range = m_ranges.GetEntryRef(i);
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s->AddressRange(base_addr + range.GetRangeBase(),
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base_addr + range.GetRangeEnd(), 4);
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}
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}
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if (m_inlineInfoSP.get() != nullptr) {
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bool show_fullpaths = (level == eDescriptionLevelVerbose);
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m_inlineInfoSP->Dump(s, show_fullpaths);
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}
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}
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void Block::Dump(Stream *s, addr_t base_addr, int32_t depth,
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bool show_context) const {
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if (depth < 0) {
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Block *parent = GetParent();
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if (parent) {
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// We have a depth that is less than zero, print our parent blocks
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// first
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parent->Dump(s, base_addr, depth + 1, show_context);
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}
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}
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s->Printf("%p: ", static_cast<const void *>(this));
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s->Indent();
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*s << "Block" << static_cast<const UserID &>(*this);
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const Block *parent_block = GetParent();
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if (parent_block) {
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s->Printf(", parent = {0x%8.8" PRIx64 "}", parent_block->GetID());
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}
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if (m_inlineInfoSP.get() != nullptr) {
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bool show_fullpaths = false;
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m_inlineInfoSP->Dump(s, show_fullpaths);
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}
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if (!m_ranges.IsEmpty()) {
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*s << ", ranges =";
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size_t num_ranges = m_ranges.GetSize();
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for (size_t i = 0; i < num_ranges; ++i) {
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const Range &range = m_ranges.GetEntryRef(i);
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if (parent_block != nullptr && parent_block->Contains(range) == false)
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*s << '!';
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else
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*s << ' ';
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s->AddressRange(base_addr + range.GetRangeBase(),
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base_addr + range.GetRangeEnd(), 4);
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}
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}
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s->EOL();
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if (depth > 0) {
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s->IndentMore();
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if (m_variable_list_sp.get()) {
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m_variable_list_sp->Dump(s, show_context);
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}
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collection::const_iterator pos, end = m_children.end();
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for (pos = m_children.begin(); pos != end; ++pos)
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(*pos)->Dump(s, base_addr, depth - 1, show_context);
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s->IndentLess();
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}
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}
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Block *Block::FindBlockByID(user_id_t block_id) {
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if (block_id == GetID())
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return this;
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Block *matching_block = nullptr;
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collection::const_iterator pos, end = m_children.end();
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for (pos = m_children.begin(); pos != end; ++pos) {
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matching_block = (*pos)->FindBlockByID(block_id);
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if (matching_block)
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break;
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}
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return matching_block;
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}
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void Block::CalculateSymbolContext(SymbolContext *sc) {
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if (m_parent_scope)
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m_parent_scope->CalculateSymbolContext(sc);
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sc->block = this;
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}
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lldb::ModuleSP Block::CalculateSymbolContextModule() {
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if (m_parent_scope)
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return m_parent_scope->CalculateSymbolContextModule();
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return lldb::ModuleSP();
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}
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CompileUnit *Block::CalculateSymbolContextCompileUnit() {
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if (m_parent_scope)
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return m_parent_scope->CalculateSymbolContextCompileUnit();
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return nullptr;
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}
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Function *Block::CalculateSymbolContextFunction() {
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if (m_parent_scope)
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return m_parent_scope->CalculateSymbolContextFunction();
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return nullptr;
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}
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Block *Block::CalculateSymbolContextBlock() { return this; }
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void Block::DumpSymbolContext(Stream *s) {
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Function *function = CalculateSymbolContextFunction();
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if (function)
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function->DumpSymbolContext(s);
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s->Printf(", Block{0x%8.8" PRIx64 "}", GetID());
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}
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void Block::DumpAddressRanges(Stream *s, lldb::addr_t base_addr) {
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if (!m_ranges.IsEmpty()) {
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size_t num_ranges = m_ranges.GetSize();
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for (size_t i = 0; i < num_ranges; ++i) {
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const Range &range = m_ranges.GetEntryRef(i);
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s->AddressRange(base_addr + range.GetRangeBase(),
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base_addr + range.GetRangeEnd(), 4);
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}
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}
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}
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bool Block::Contains(addr_t range_offset) const {
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return m_ranges.FindEntryThatContains(range_offset) != nullptr;
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}
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bool Block::Contains(const Block *block) const {
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if (this == block)
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return false; // This block doesn't contain itself...
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// Walk the parent chain for "block" and see if any if them match this block
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const Block *block_parent;
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for (block_parent = block->GetParent(); block_parent != nullptr;
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block_parent = block_parent->GetParent()) {
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if (this == block_parent)
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return true; // One of the parents of "block" is this object!
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}
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return false;
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}
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bool Block::Contains(const Range &range) const {
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return m_ranges.FindEntryThatContains(range) != nullptr;
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}
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Block *Block::GetParent() const {
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if (m_parent_scope)
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return m_parent_scope->CalculateSymbolContextBlock();
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return nullptr;
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}
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Block *Block::GetContainingInlinedBlock() {
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if (GetInlinedFunctionInfo())
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return this;
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return GetInlinedParent();
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}
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Block *Block::GetInlinedParent() {
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Block *parent_block = GetParent();
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if (parent_block) {
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if (parent_block->GetInlinedFunctionInfo())
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return parent_block;
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else
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return parent_block->GetInlinedParent();
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}
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return nullptr;
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}
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bool Block::GetRangeContainingOffset(const addr_t offset, Range &range) {
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const Range *range_ptr = m_ranges.FindEntryThatContains(offset);
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if (range_ptr) {
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range = *range_ptr;
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return true;
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}
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range.Clear();
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return false;
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}
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bool Block::GetRangeContainingAddress(const Address &addr,
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AddressRange &range) {
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Function *function = CalculateSymbolContextFunction();
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if (function) {
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const AddressRange &func_range = function->GetAddressRange();
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if (addr.GetSection() == func_range.GetBaseAddress().GetSection()) {
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const addr_t addr_offset = addr.GetOffset();
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const addr_t func_offset = func_range.GetBaseAddress().GetOffset();
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if (addr_offset >= func_offset &&
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addr_offset < func_offset + func_range.GetByteSize()) {
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addr_t offset = addr_offset - func_offset;
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const Range *range_ptr = m_ranges.FindEntryThatContains(offset);
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if (range_ptr) {
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range.GetBaseAddress() = func_range.GetBaseAddress();
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range.GetBaseAddress().SetOffset(func_offset +
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range_ptr->GetRangeBase());
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range.SetByteSize(range_ptr->GetByteSize());
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return true;
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}
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}
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}
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}
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range.Clear();
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return false;
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}
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bool Block::GetRangeContainingLoadAddress(lldb::addr_t load_addr,
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Target &target, AddressRange &range) {
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Address load_address;
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load_address.SetLoadAddress(load_addr, &target);
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AddressRange containing_range;
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return GetRangeContainingAddress(load_address, containing_range);
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}
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uint32_t Block::GetRangeIndexContainingAddress(const Address &addr) {
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Function *function = CalculateSymbolContextFunction();
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if (function) {
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const AddressRange &func_range = function->GetAddressRange();
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if (addr.GetSection() == func_range.GetBaseAddress().GetSection()) {
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const addr_t addr_offset = addr.GetOffset();
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const addr_t func_offset = func_range.GetBaseAddress().GetOffset();
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if (addr_offset >= func_offset &&
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addr_offset < func_offset + func_range.GetByteSize()) {
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addr_t offset = addr_offset - func_offset;
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return m_ranges.FindEntryIndexThatContains(offset);
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}
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}
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}
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return UINT32_MAX;
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}
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bool Block::GetRangeAtIndex(uint32_t range_idx, AddressRange &range) {
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if (range_idx < m_ranges.GetSize()) {
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Function *function = CalculateSymbolContextFunction();
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if (function) {
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const Range &vm_range = m_ranges.GetEntryRef(range_idx);
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range.GetBaseAddress() = function->GetAddressRange().GetBaseAddress();
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range.GetBaseAddress().Slide(vm_range.GetRangeBase());
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range.SetByteSize(vm_range.GetByteSize());
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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 Block::GetStartAddress(Address &addr) {
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if (m_ranges.IsEmpty())
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return false;
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Function *function = CalculateSymbolContextFunction();
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if (function) {
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addr = function->GetAddressRange().GetBaseAddress();
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addr.Slide(m_ranges.GetEntryRef(0).GetRangeBase());
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return true;
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}
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return false;
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}
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void Block::FinalizeRanges() {
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m_ranges.Sort();
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m_ranges.CombineConsecutiveRanges();
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}
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void Block::AddRange(const Range &range) {
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Block *parent_block = GetParent();
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if (parent_block && !parent_block->Contains(range)) {
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Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_SYMBOLS));
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if (log) {
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ModuleSP module_sp(m_parent_scope->CalculateSymbolContextModule());
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Function *function = m_parent_scope->CalculateSymbolContextFunction();
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const addr_t function_file_addr =
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function->GetAddressRange().GetBaseAddress().GetFileAddress();
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const addr_t block_start_addr = function_file_addr + range.GetRangeBase();
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const addr_t block_end_addr = function_file_addr + range.GetRangeEnd();
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Type *func_type = function->GetType();
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const Declaration &func_decl = func_type->GetDeclaration();
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if (func_decl.GetLine()) {
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log->Printf("warning: %s:%u block {0x%8.8" PRIx64
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"} has range[%u] [0x%" PRIx64 " - 0x%" PRIx64
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") which is not contained in parent block {0x%8.8" PRIx64
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"} in function {0x%8.8" PRIx64 "} from %s",
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func_decl.GetFile().GetPath().c_str(), func_decl.GetLine(),
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GetID(), (uint32_t)m_ranges.GetSize(), block_start_addr,
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block_end_addr, parent_block->GetID(), function->GetID(),
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module_sp->GetFileSpec().GetPath().c_str());
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} else {
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log->Printf("warning: block {0x%8.8" PRIx64
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"} has range[%u] [0x%" PRIx64 " - 0x%" PRIx64
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") which is not contained in parent block {0x%8.8" PRIx64
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"} in function {0x%8.8" PRIx64 "} from %s",
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GetID(), (uint32_t)m_ranges.GetSize(), block_start_addr,
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block_end_addr, parent_block->GetID(), function->GetID(),
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module_sp->GetFileSpec().GetPath().c_str());
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}
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}
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parent_block->AddRange(range);
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}
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m_ranges.Append(range);
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}
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// Return the current number of bytes that this object occupies in memory
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size_t Block::MemorySize() const {
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size_t mem_size = sizeof(Block) + m_ranges.GetSize() * sizeof(Range);
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if (m_inlineInfoSP.get())
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mem_size += m_inlineInfoSP->MemorySize();
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if (m_variable_list_sp.get())
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mem_size += m_variable_list_sp->MemorySize();
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return mem_size;
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}
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void Block::AddChild(const BlockSP &child_block_sp) {
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if (child_block_sp) {
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child_block_sp->SetParentScope(this);
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m_children.push_back(child_block_sp);
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}
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}
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void Block::SetInlinedFunctionInfo(const char *name, const char *mangled,
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const Declaration *decl_ptr,
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const Declaration *call_decl_ptr) {
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m_inlineInfoSP.reset(
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new InlineFunctionInfo(name, mangled, decl_ptr, call_decl_ptr));
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}
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VariableListSP Block::GetBlockVariableList(bool can_create) {
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if (m_parsed_block_variables == false) {
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if (m_variable_list_sp.get() == nullptr && can_create) {
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m_parsed_block_variables = true;
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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assert(sc.module_sp);
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sc.module_sp->GetSymbolVendor()->ParseVariablesForContext(sc);
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}
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}
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return m_variable_list_sp;
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}
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uint32_t
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Block::AppendBlockVariables(bool can_create, bool get_child_block_variables,
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bool stop_if_child_block_is_inlined_function,
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const std::function<bool(Variable *)> &filter,
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VariableList *variable_list) {
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uint32_t num_variables_added = 0;
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VariableList *block_var_list = GetBlockVariableList(can_create).get();
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if (block_var_list) {
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for (size_t i = 0; i < block_var_list->GetSize(); ++i) {
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VariableSP variable = block_var_list->GetVariableAtIndex(i);
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if (filter(variable.get())) {
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num_variables_added++;
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variable_list->AddVariable(variable);
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}
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}
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}
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if (get_child_block_variables) {
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collection::const_iterator pos, end = m_children.end();
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for (pos = m_children.begin(); pos != end; ++pos) {
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Block *child_block = pos->get();
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if (stop_if_child_block_is_inlined_function == false ||
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child_block->GetInlinedFunctionInfo() == nullptr) {
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num_variables_added += child_block->AppendBlockVariables(
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can_create, get_child_block_variables,
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stop_if_child_block_is_inlined_function, filter, variable_list);
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}
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}
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}
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return num_variables_added;
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}
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uint32_t Block::AppendVariables(bool can_create, bool get_parent_variables,
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bool stop_if_block_is_inlined_function,
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const std::function<bool(Variable *)> &filter,
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VariableList *variable_list) {
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uint32_t num_variables_added = 0;
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VariableListSP variable_list_sp(GetBlockVariableList(can_create));
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bool is_inlined_function = GetInlinedFunctionInfo() != nullptr;
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if (variable_list_sp) {
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for (size_t i = 0; i < variable_list_sp->GetSize(); ++i) {
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VariableSP variable = variable_list_sp->GetVariableAtIndex(i);
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if (filter(variable.get())) {
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num_variables_added++;
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variable_list->AddVariable(variable);
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}
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}
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}
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if (get_parent_variables) {
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if (stop_if_block_is_inlined_function && is_inlined_function)
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return num_variables_added;
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Block *parent_block = GetParent();
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if (parent_block)
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num_variables_added += parent_block->AppendVariables(
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can_create, get_parent_variables, stop_if_block_is_inlined_function,
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filter, variable_list);
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}
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return num_variables_added;
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}
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CompilerDeclContext Block::GetDeclContext() {
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ModuleSP module_sp = CalculateSymbolContextModule();
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if (module_sp) {
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SymbolVendor *sym_vendor = module_sp->GetSymbolVendor();
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if (sym_vendor) {
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SymbolFile *sym_file = sym_vendor->GetSymbolFile();
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if (sym_file)
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return sym_file->GetDeclContextForUID(GetID());
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}
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}
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return CompilerDeclContext();
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}
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void Block::SetBlockInfoHasBeenParsed(bool b, bool set_children) {
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m_parsed_block_info = b;
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if (set_children) {
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m_parsed_child_blocks = true;
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collection::const_iterator pos, end = m_children.end();
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for (pos = m_children.begin(); pos != end; ++pos)
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(*pos)->SetBlockInfoHasBeenParsed(b, true);
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}
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}
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void Block::SetDidParseVariables(bool b, bool set_children) {
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m_parsed_block_variables = b;
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if (set_children) {
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collection::const_iterator pos, end = m_children.end();
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for (pos = m_children.begin(); pos != end; ++pos)
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(*pos)->SetDidParseVariables(b, true);
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}
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}
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Block *Block::GetSibling() const {
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if (m_parent_scope) {
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Block *parent_block = GetParent();
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if (parent_block)
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return parent_block->GetSiblingForChild(this);
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}
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return nullptr;
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}
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// A parent of child blocks can be asked to find a sibling block given
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// one of its child blocks
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Block *Block::GetSiblingForChild(const Block *child_block) const {
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|
if (!m_children.empty()) {
|
|
collection::const_iterator pos, end = m_children.end();
|
|
for (pos = m_children.begin(); pos != end; ++pos) {
|
|
if (pos->get() == child_block) {
|
|
if (++pos != end)
|
|
return pos->get();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|