llvm-project/lldb/source/Symbol/Block.cpp

635 lines
18 KiB
C++

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