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

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//===-- Symbol.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/Symbol.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/Stream.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
using namespace lldb;
using namespace lldb_private;
Symbol::Symbol() :
UserID (),
SymbolContextScope (),
m_mangled (),
m_type (eSymbolTypeInvalid),
m_type_data (0),
m_type_data_resolved (false),
m_is_synthetic (false),
m_is_debug (false),
m_is_external (false),
m_size_is_sibling (false),
m_size_is_synthesized (false),
m_searched_for_function (false),
m_addr_range (),
m_flags (),
m_function (NULL)
{
}
Symbol::Symbol
(
user_id_t symID,
const char *name,
bool name_is_mangled,
SymbolType type,
bool external,
bool is_debug,
bool is_trampoline,
bool is_artificial,
const Section* section,
addr_t offset,
uint32_t size,
uint32_t flags
) :
UserID (symID),
SymbolContextScope (),
m_mangled (name, name_is_mangled),
m_type (type),
m_type_data (0),
m_type_data_resolved (false),
m_is_synthetic (is_artificial),
m_is_debug (is_debug),
m_is_external (external),
m_size_is_sibling (false),
m_size_is_synthesized (false),
m_searched_for_function (false),
m_addr_range (section, offset, size),
m_flags (flags),
m_function (NULL)
{
}
Symbol::Symbol
(
user_id_t symID,
const char *name,
bool name_is_mangled,
SymbolType type,
bool external,
bool is_debug,
bool is_trampoline,
bool is_artificial,
const AddressRange &range,
uint32_t flags
) :
UserID (symID),
SymbolContextScope (),
m_mangled (name, name_is_mangled),
m_type (type),
m_type_data (0),
m_type_data_resolved (false),
m_is_synthetic (is_artificial),
m_is_debug (is_debug),
m_is_external (external),
m_size_is_sibling (false),
m_size_is_synthesized (false),
m_searched_for_function (false),
m_addr_range (range),
m_flags (flags),
m_function (NULL)
{
}
Symbol::Symbol(const Symbol& rhs):
UserID (rhs),
SymbolContextScope (rhs),
m_mangled (rhs.m_mangled),
m_type (rhs.m_type),
m_type_data (rhs.m_type_data),
m_type_data_resolved (rhs.m_type_data_resolved),
m_is_synthetic (rhs.m_is_synthetic),
m_is_debug (rhs.m_is_debug),
m_is_external (rhs.m_is_external),
m_size_is_sibling (rhs.m_size_is_sibling),
m_size_is_synthesized (false),
m_searched_for_function (false),
m_addr_range (rhs.m_addr_range),
m_flags (rhs.m_flags),
m_function (NULL)
{
}
const Symbol&
Symbol::operator= (const Symbol& rhs)
{
if (this != &rhs)
{
SymbolContextScope::operator= (rhs);
UserID::operator= (rhs);
m_mangled = rhs.m_mangled;
m_type = rhs.m_type;
m_type_data = rhs.m_type_data;
m_type_data_resolved = rhs.m_type_data_resolved;
m_is_synthetic = rhs.m_is_synthetic;
m_is_debug = rhs.m_is_debug;
m_is_external = rhs.m_is_external;
m_size_is_sibling = rhs.m_size_is_sibling;
m_size_is_synthesized = rhs.m_size_is_sibling;
m_searched_for_function = rhs.m_searched_for_function;
m_addr_range = rhs.m_addr_range;
m_flags = rhs.m_flags;
m_function = rhs.m_function;
}
return *this;
}
AddressRange *
Symbol::GetAddressRangePtr()
{
if (m_addr_range.GetBaseAddress().GetSection())
return &m_addr_range;
return NULL;
}
const AddressRange *
Symbol::GetAddressRangePtr() const
{
if (m_addr_range.GetBaseAddress().GetSection())
return &m_addr_range;
return NULL;
}
uint32_t
Symbol::GetSiblingIndex() const
{
return m_size_is_sibling ? m_addr_range.GetByteSize() : 0;
}
bool
Symbol::IsTrampoline () const
{
return m_type == eSymbolTypeTrampoline;
}
Added function name types to allow us to set breakpoints by name more intelligently. The four name types we currently have are: eFunctionNameTypeFull = (1 << 1), // The function name. // For C this is the same as just the name of the function // For C++ this is the demangled version of the mangled name. // For ObjC this is the full function signature with the + or // - and the square brackets and the class and selector eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class // methods or selectors will be searched. eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names this allows much more flexibility when setting breakoints: (lldb) breakpoint set --name main --basename (lldb) breakpoint set --name main --fullname (lldb) breakpoint set --name main --method (lldb) breakpoint set --name main --selector The default: (lldb) breakpoint set --name main will inspect the name "main" and look for any parens, or if the name starts with "-[" or "+[" and if any are found then a full name search will happen. Else a basename search will be the default. Fixed some command option structures so not all options are required when they shouldn't be. Cleaned up the breakpoint output summary. Made the "image lookup --address <addr>" output much more verbose so it shows all the important symbol context results. Added a GetDescription method to many of the SymbolContext objects for the more verbose output. llvm-svn: 107075
2010-06-29 05:30:43 +08:00
void
Symbol::GetDescription (Stream *s, lldb::DescriptionLevel level, Target *target) const
Added function name types to allow us to set breakpoints by name more intelligently. The four name types we currently have are: eFunctionNameTypeFull = (1 << 1), // The function name. // For C this is the same as just the name of the function // For C++ this is the demangled version of the mangled name. // For ObjC this is the full function signature with the + or // - and the square brackets and the class and selector eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class // methods or selectors will be searched. eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names this allows much more flexibility when setting breakoints: (lldb) breakpoint set --name main --basename (lldb) breakpoint set --name main --fullname (lldb) breakpoint set --name main --method (lldb) breakpoint set --name main --selector The default: (lldb) breakpoint set --name main will inspect the name "main" and look for any parens, or if the name starts with "-[" or "+[" and if any are found then a full name search will happen. Else a basename search will be the default. Fixed some command option structures so not all options are required when they shouldn't be. Cleaned up the breakpoint output summary. Made the "image lookup --address <addr>" output much more verbose so it shows all the important symbol context results. Added a GetDescription method to many of the SymbolContext objects for the more verbose output. llvm-svn: 107075
2010-06-29 05:30:43 +08:00
{
*s << "id = " << (const UserID&)*this << ", name = \"" << m_mangled.GetName() << '"';
Added function name types to allow us to set breakpoints by name more intelligently. The four name types we currently have are: eFunctionNameTypeFull = (1 << 1), // The function name. // For C this is the same as just the name of the function // For C++ this is the demangled version of the mangled name. // For ObjC this is the full function signature with the + or // - and the square brackets and the class and selector eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class // methods or selectors will be searched. eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names this allows much more flexibility when setting breakoints: (lldb) breakpoint set --name main --basename (lldb) breakpoint set --name main --fullname (lldb) breakpoint set --name main --method (lldb) breakpoint set --name main --selector The default: (lldb) breakpoint set --name main will inspect the name "main" and look for any parens, or if the name starts with "-[" or "+[" and if any are found then a full name search will happen. Else a basename search will be the default. Fixed some command option structures so not all options are required when they shouldn't be. Cleaned up the breakpoint output summary. Made the "image lookup --address <addr>" output much more verbose so it shows all the important symbol context results. Added a GetDescription method to many of the SymbolContext objects for the more verbose output. llvm-svn: 107075
2010-06-29 05:30:43 +08:00
const Section *section = m_addr_range.GetBaseAddress().GetSection();
if (section != NULL)
{
if (m_addr_range.GetBaseAddress().IsSectionOffset())
Added function name types to allow us to set breakpoints by name more intelligently. The four name types we currently have are: eFunctionNameTypeFull = (1 << 1), // The function name. // For C this is the same as just the name of the function // For C++ this is the demangled version of the mangled name. // For ObjC this is the full function signature with the + or // - and the square brackets and the class and selector eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class // methods or selectors will be searched. eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names this allows much more flexibility when setting breakoints: (lldb) breakpoint set --name main --basename (lldb) breakpoint set --name main --fullname (lldb) breakpoint set --name main --method (lldb) breakpoint set --name main --selector The default: (lldb) breakpoint set --name main will inspect the name "main" and look for any parens, or if the name starts with "-[" or "+[" and if any are found then a full name search will happen. Else a basename search will be the default. Fixed some command option structures so not all options are required when they shouldn't be. Cleaned up the breakpoint output summary. Made the "image lookup --address <addr>" output much more verbose so it shows all the important symbol context results. Added a GetDescription method to many of the SymbolContext objects for the more verbose output. llvm-svn: 107075
2010-06-29 05:30:43 +08:00
{
if (m_addr_range.GetByteSize() > 0)
{
s->PutCString (", range = ");
m_addr_range.Dump(s, target, Address::DumpStyleLoadAddress, Address::DumpStyleFileAddress);
}
else
{
s->PutCString (", address = ");
m_addr_range.GetBaseAddress().Dump(s, target, Address::DumpStyleLoadAddress, Address::DumpStyleFileAddress);
}
Added function name types to allow us to set breakpoints by name more intelligently. The four name types we currently have are: eFunctionNameTypeFull = (1 << 1), // The function name. // For C this is the same as just the name of the function // For C++ this is the demangled version of the mangled name. // For ObjC this is the full function signature with the + or // - and the square brackets and the class and selector eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class // methods or selectors will be searched. eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names this allows much more flexibility when setting breakoints: (lldb) breakpoint set --name main --basename (lldb) breakpoint set --name main --fullname (lldb) breakpoint set --name main --method (lldb) breakpoint set --name main --selector The default: (lldb) breakpoint set --name main will inspect the name "main" and look for any parens, or if the name starts with "-[" or "+[" and if any are found then a full name search will happen. Else a basename search will be the default. Fixed some command option structures so not all options are required when they shouldn't be. Cleaned up the breakpoint output summary. Made the "image lookup --address <addr>" output much more verbose so it shows all the important symbol context results. Added a GetDescription method to many of the SymbolContext objects for the more verbose output. llvm-svn: 107075
2010-06-29 05:30:43 +08:00
}
else
{
if (m_size_is_sibling)
s->Printf (", sibling = %5llu", m_addr_range.GetBaseAddress().GetOffset());
else
s->Printf (", value = 0x%16.16llx", m_addr_range.GetBaseAddress().GetOffset());
Added function name types to allow us to set breakpoints by name more intelligently. The four name types we currently have are: eFunctionNameTypeFull = (1 << 1), // The function name. // For C this is the same as just the name of the function // For C++ this is the demangled version of the mangled name. // For ObjC this is the full function signature with the + or // - and the square brackets and the class and selector eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class // methods or selectors will be searched. eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names this allows much more flexibility when setting breakoints: (lldb) breakpoint set --name main --basename (lldb) breakpoint set --name main --fullname (lldb) breakpoint set --name main --method (lldb) breakpoint set --name main --selector The default: (lldb) breakpoint set --name main will inspect the name "main" and look for any parens, or if the name starts with "-[" or "+[" and if any are found then a full name search will happen. Else a basename search will be the default. Fixed some command option structures so not all options are required when they shouldn't be. Cleaned up the breakpoint output summary. Made the "image lookup --address <addr>" output much more verbose so it shows all the important symbol context results. Added a GetDescription method to many of the SymbolContext objects for the more verbose output. llvm-svn: 107075
2010-06-29 05:30:43 +08:00
}
}
}
void
Symbol::Dump(Stream *s, Target *target, uint32_t index) const
{
// s->Printf("%.*p: ", (int)sizeof(void*) * 2, this);
// s->Indent();
// s->Printf("Symbol[%5u] %6u %c%c %-12s ",
s->Printf("[%5u] %6u %c%c%c %-12s ",
index,
GetID(),
m_is_debug ? 'D' : ' ',
m_is_synthetic ? 'S' : ' ',
m_is_external ? 'X' : ' ',
GetTypeAsString());
const Section *section = m_addr_range.GetBaseAddress().GetSection();
if (section != NULL)
{
if (!m_addr_range.GetBaseAddress().Dump(s, NULL, Address::DumpStyleFileAddress))
s->Printf("%*s", 18, "");
s->PutChar(' ');
if (!m_addr_range.GetBaseAddress().Dump(s, target, Address::DumpStyleLoadAddress))
s->Printf("%*s", 18, "");
const char *format = m_size_is_sibling ?
" Sibling -> [%5llu] 0x%8.8x %s\n":
" 0x%16.16llx 0x%8.8x %s\n";
s->Printf( format,
m_addr_range.GetByteSize(),
m_flags,
m_mangled.GetName().AsCString(""));
}
else
{
const char *format = m_size_is_sibling ?
"0x%16.16llx Sibling -> [%5llu] 0x%8.8x %s\n":
"0x%16.16llx 0x%16.16llx 0x%8.8x %s\n";
s->Printf( format,
m_addr_range.GetBaseAddress().GetOffset(),
m_addr_range.GetByteSize(),
m_flags,
m_mangled.GetName().AsCString(""));
}
}
Function *
Symbol::GetFunction ()
{
if (m_function == NULL && !m_searched_for_function)
{
m_searched_for_function = true;
Module *module = m_addr_range.GetBaseAddress().GetModule();
if (module)
{
SymbolContext sc;
if (module->ResolveSymbolContextForAddress(m_addr_range.GetBaseAddress(), eSymbolContextFunction, sc))
m_function = sc.function;
}
}
return m_function;
}
uint32_t
Symbol::GetPrologueByteSize ()
{
if (m_type == eSymbolTypeCode)
{
if (!m_type_data_resolved)
{
m_type_data_resolved = true;
Module *module = m_addr_range.GetBaseAddress().GetModule();
SymbolContext sc;
if (module && module->ResolveSymbolContextForAddress (m_addr_range.GetBaseAddress(),
eSymbolContextLineEntry,
sc))
{
m_type_data = sc.line_entry.range.GetByteSize();
}
else
{
// TODO: expose something in Process to figure out the
// size of a function prologue.
}
}
return m_type_data;
}
return 0;
}
void
Symbol::SetValue(addr_t value)
{
m_addr_range.GetBaseAddress().SetSection(NULL);
m_addr_range.GetBaseAddress().SetOffset(value);
}
bool
Symbol::Compare(const ConstString& name, SymbolType type) const
{
if (m_type == eSymbolTypeAny || m_type == type)
return m_mangled.GetMangledName() == name || m_mangled.GetDemangledName() == name;
return false;
}
#define ENUM_TO_CSTRING(x) case eSymbolType##x: return #x;
const char *
Symbol::GetTypeAsString() const
{
switch (m_type)
{
ENUM_TO_CSTRING(Invalid);
ENUM_TO_CSTRING(Absolute);
ENUM_TO_CSTRING(Extern);
ENUM_TO_CSTRING(Code);
ENUM_TO_CSTRING(Data);
ENUM_TO_CSTRING(Trampoline);
ENUM_TO_CSTRING(Runtime);
ENUM_TO_CSTRING(Exception);
ENUM_TO_CSTRING(SourceFile);
ENUM_TO_CSTRING(HeaderFile);
ENUM_TO_CSTRING(ObjectFile);
ENUM_TO_CSTRING(CommonBlock);
ENUM_TO_CSTRING(Block);
ENUM_TO_CSTRING(Local);
ENUM_TO_CSTRING(Param);
ENUM_TO_CSTRING(Variable);
ENUM_TO_CSTRING(VariableType);
ENUM_TO_CSTRING(LineEntry);
ENUM_TO_CSTRING(LineHeader);
ENUM_TO_CSTRING(ScopeBegin);
ENUM_TO_CSTRING(ScopeEnd);
ENUM_TO_CSTRING(Additional);
ENUM_TO_CSTRING(Compiler);
ENUM_TO_CSTRING(Instrumentation);
ENUM_TO_CSTRING(Undefined);
default:
break;
}
return "<unknown SymbolType>";
}
void
Symbol::CalculateSymbolContext (SymbolContext *sc)
{
// Symbols can reconstruct the symbol and the module in the symbol context
sc->symbol = this;
const AddressRange *range = GetAddressRangePtr();
if (range)
{
Module *module = range->GetBaseAddress().GetModule ();
if (module)
{
sc->module_sp = module->GetSP();
return;
}
}
sc->module_sp.reset();
}
void
Symbol::DumpSymbolContext (Stream *s)
{
bool dumped_module = false;
const AddressRange *range = GetAddressRangePtr();
if (range)
{
Module *module = range->GetBaseAddress().GetModule ();
if (module)
{
dumped_module = true;
module->DumpSymbolContext(s);
}
}
if (dumped_module)
s->PutCString(", ");
s->Printf("Symbol{0x%8.8x}", GetID());
}