44d937820b
The many many benefits include: 1 - Input/Output/Error streams are now handled as real streams not a push style input 2 - auto completion in python embedded interpreter 3 - multi-line input for "script" and "expression" commands now allow you to edit previous/next lines using up and down arrow keys and this makes multi-line input actually a viable thing to use 4 - it is now possible to use curses to drive LLDB (please try the "gui" command) We will need to deal with and fix any buildbot failures and tests and arise now that input/output and error are correctly hooked up in all cases. llvm-svn: 200263
611 lines
16 KiB
C++
611 lines
16 KiB
C++
//===-- Function.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/Function.h"
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#include "lldb/Core/Disassembler.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/Host/Host.h"
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#include "lldb/Symbol/ClangASTType.h"
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#include "lldb/Symbol/CompileUnit.h"
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#include "lldb/Symbol/LineTable.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Symbol/SymbolVendor.h"
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#include "llvm/Support/Casting.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// Basic function information is contained in the FunctionInfo class.
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// It is designed to contain the name, linkage name, and declaration
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// location.
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//----------------------------------------------------------------------
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FunctionInfo::FunctionInfo (const char *name, const Declaration *decl_ptr) :
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m_name(name),
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m_declaration(decl_ptr)
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{
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}
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FunctionInfo::FunctionInfo (const ConstString& name, const Declaration *decl_ptr) :
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m_name(name),
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m_declaration(decl_ptr)
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{
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}
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FunctionInfo::~FunctionInfo()
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{
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}
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void
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FunctionInfo::Dump(Stream *s, bool show_fullpaths) const
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{
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if (m_name)
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*s << ", name = \"" << m_name << "\"";
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m_declaration.Dump(s, show_fullpaths);
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}
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int
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FunctionInfo::Compare(const FunctionInfo& a, const FunctionInfo& b)
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{
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int result = ConstString::Compare(a.GetName(), b.GetName());
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if (result)
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return result;
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return Declaration::Compare(a.m_declaration, b.m_declaration);
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}
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Declaration&
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FunctionInfo::GetDeclaration()
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{
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return m_declaration;
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}
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const Declaration&
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FunctionInfo::GetDeclaration() const
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{
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return m_declaration;
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}
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const ConstString&
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FunctionInfo::GetName() const
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{
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return m_name;
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}
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size_t
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FunctionInfo::MemorySize() const
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{
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return m_name.MemorySize() + m_declaration.MemorySize();
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}
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InlineFunctionInfo::InlineFunctionInfo
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(
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const char *name,
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const char *mangled,
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const Declaration *decl_ptr,
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const Declaration *call_decl_ptr
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) :
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FunctionInfo(name, decl_ptr),
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m_mangled(ConstString(mangled), true),
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m_call_decl (call_decl_ptr)
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{
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}
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InlineFunctionInfo::InlineFunctionInfo
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(
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const ConstString& name,
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const Mangled &mangled,
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const Declaration *decl_ptr,
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const Declaration *call_decl_ptr
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) :
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FunctionInfo(name, decl_ptr),
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m_mangled(mangled),
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m_call_decl (call_decl_ptr)
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{
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}
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InlineFunctionInfo::~InlineFunctionInfo()
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{
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}
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int
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InlineFunctionInfo::Compare(const InlineFunctionInfo& a, const InlineFunctionInfo& b)
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{
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int result = FunctionInfo::Compare(a, b);
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if (result)
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return result;
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// only compare the mangled names if both have them
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return Mangled::Compare(a.m_mangled, a.m_mangled);
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}
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void
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InlineFunctionInfo::Dump(Stream *s, bool show_fullpaths) const
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{
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FunctionInfo::Dump(s, show_fullpaths);
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if (m_mangled)
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m_mangled.Dump(s);
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}
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void
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InlineFunctionInfo::DumpStopContext (Stream *s) const
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{
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// s->Indent("[inlined] ");
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s->Indent();
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if (m_mangled)
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s->PutCString (m_mangled.GetName().AsCString());
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else
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s->PutCString (m_name.AsCString());
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}
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const ConstString &
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InlineFunctionInfo::GetName () const
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{
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if (m_mangled)
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return m_mangled.GetName();
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return m_name;
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}
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Declaration &
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InlineFunctionInfo::GetCallSite ()
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{
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return m_call_decl;
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}
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const Declaration &
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InlineFunctionInfo::GetCallSite () const
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{
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return m_call_decl;
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}
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Mangled&
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InlineFunctionInfo::GetMangled()
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{
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return m_mangled;
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}
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const Mangled&
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InlineFunctionInfo::GetMangled() const
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{
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return m_mangled;
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}
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size_t
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InlineFunctionInfo::MemorySize() const
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{
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return FunctionInfo::MemorySize() + m_mangled.MemorySize();
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}
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//----------------------------------------------------------------------
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//
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//----------------------------------------------------------------------
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Function::Function
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(
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CompileUnit *comp_unit,
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lldb::user_id_t func_uid,
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lldb::user_id_t type_uid,
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const Mangled &mangled,
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Type * type,
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const AddressRange& range
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) :
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UserID (func_uid),
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m_comp_unit (comp_unit),
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m_type_uid (type_uid),
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m_type (type),
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m_mangled (mangled),
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m_block (func_uid),
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m_range (range),
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m_frame_base (),
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m_flags (),
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m_prologue_byte_size (0)
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{
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m_block.SetParentScope(this);
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assert(comp_unit != NULL);
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}
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Function::Function
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(
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CompileUnit *comp_unit,
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lldb::user_id_t func_uid,
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lldb::user_id_t type_uid,
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const char *mangled,
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Type *type,
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const AddressRange &range
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) :
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UserID (func_uid),
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m_comp_unit (comp_unit),
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m_type_uid (type_uid),
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m_type (type),
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m_mangled (ConstString(mangled), true),
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m_block (func_uid),
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m_range (range),
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m_frame_base (),
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m_flags (),
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m_prologue_byte_size (0)
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{
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m_block.SetParentScope(this);
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assert(comp_unit != NULL);
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}
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Function::~Function()
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{
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}
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void
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Function::GetStartLineSourceInfo (FileSpec &source_file, uint32_t &line_no)
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{
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line_no = 0;
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source_file.Clear();
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if (m_comp_unit == NULL)
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return;
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if (m_type != NULL && m_type->GetDeclaration().GetLine() != 0)
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{
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source_file = m_type->GetDeclaration().GetFile();
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line_no = m_type->GetDeclaration().GetLine();
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}
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else
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{
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LineTable *line_table = m_comp_unit->GetLineTable();
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if (line_table == NULL)
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return;
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LineEntry line_entry;
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if (line_table->FindLineEntryByAddress (GetAddressRange().GetBaseAddress(), line_entry, NULL))
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{
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line_no = line_entry.line;
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source_file = line_entry.file;
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}
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}
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}
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void
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Function::GetEndLineSourceInfo (FileSpec &source_file, uint32_t &line_no)
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{
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line_no = 0;
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source_file.Clear();
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// The -1 is kind of cheesy, but I want to get the last line entry for the given function, not the
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// first entry of the next.
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Address scratch_addr(GetAddressRange().GetBaseAddress());
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scratch_addr.SetOffset (scratch_addr.GetOffset() + GetAddressRange().GetByteSize() - 1);
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LineTable *line_table = m_comp_unit->GetLineTable();
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if (line_table == NULL)
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return;
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LineEntry line_entry;
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if (line_table->FindLineEntryByAddress (scratch_addr, line_entry, NULL))
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{
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line_no = line_entry.line;
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source_file = line_entry.file;
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}
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}
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Block &
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Function::GetBlock (bool can_create)
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{
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if (!m_block.BlockInfoHasBeenParsed() && can_create)
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{
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SymbolContext sc;
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CalculateSymbolContext(&sc);
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if (sc.module_sp)
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{
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sc.module_sp->GetSymbolVendor()->ParseFunctionBlocks(sc);
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}
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else
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{
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Host::SystemLog (Host::eSystemLogError,
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"error: unable to find module shared pointer for function '%s' in %s\n",
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GetName().GetCString(),
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m_comp_unit->GetPath().c_str());
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}
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m_block.SetBlockInfoHasBeenParsed (true, true);
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}
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return m_block;
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}
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CompileUnit*
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Function::GetCompileUnit()
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{
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return m_comp_unit;
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}
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const CompileUnit*
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Function::GetCompileUnit() const
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{
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return m_comp_unit;
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}
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void
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Function::GetDescription(Stream *s, lldb::DescriptionLevel level, Target *target)
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{
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Type* func_type = GetType();
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const char *name = func_type ? func_type->GetName().AsCString() : "<unknown>";
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*s << "id = " << (const UserID&)*this << ", name = \"" << name << "\", range = ";
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Address::DumpStyle fallback_style;
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if (level == eDescriptionLevelVerbose)
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fallback_style = Address::DumpStyleModuleWithFileAddress;
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else
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fallback_style = Address::DumpStyleFileAddress;
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GetAddressRange().Dump(s, target, Address::DumpStyleLoadAddress, fallback_style);
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}
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void
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Function::Dump(Stream *s, bool show_context) const
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{
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s->Printf("%p: ", this);
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s->Indent();
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*s << "Function" << (const UserID&)*this;
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m_mangled.Dump(s);
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if (m_type)
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{
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s->Printf(", type = %p", m_type);
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}
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else if (m_type_uid != LLDB_INVALID_UID)
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{
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s->Printf(", type_uid = 0x%8.8" PRIx64, m_type_uid);
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}
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s->EOL();
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// Dump the root object
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if (m_block.BlockInfoHasBeenParsed ())
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m_block.Dump(s, m_range.GetBaseAddress().GetFileAddress(), INT_MAX, show_context);
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}
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void
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Function::CalculateSymbolContext(SymbolContext* sc)
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{
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sc->function = this;
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m_comp_unit->CalculateSymbolContext(sc);
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}
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ModuleSP
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Function::CalculateSymbolContextModule ()
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{
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SectionSP section_sp (m_range.GetBaseAddress().GetSection());
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if (section_sp)
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return section_sp->GetModule();
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return this->GetCompileUnit()->GetModule();
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}
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CompileUnit *
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Function::CalculateSymbolContextCompileUnit ()
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{
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return this->GetCompileUnit();
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}
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Function *
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Function::CalculateSymbolContextFunction ()
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{
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return this;
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}
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lldb::DisassemblerSP
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Function::GetInstructions (const ExecutionContext &exe_ctx,
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const char *flavor,
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bool prefer_file_cache)
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{
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ModuleSP module_sp (GetAddressRange().GetBaseAddress().GetModule());
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if (module_sp)
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{
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const bool prefer_file_cache = false;
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return Disassembler::DisassembleRange (module_sp->GetArchitecture(),
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NULL,
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flavor,
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exe_ctx,
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GetAddressRange(),
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prefer_file_cache);
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}
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return lldb::DisassemblerSP();
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}
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bool
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Function::GetDisassembly (const ExecutionContext &exe_ctx,
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const char *flavor,
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bool prefer_file_cache,
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Stream &strm)
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{
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lldb::DisassemblerSP disassembler_sp = GetInstructions (exe_ctx, flavor, prefer_file_cache);
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if (disassembler_sp)
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{
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const bool show_address = true;
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const bool show_bytes = false;
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disassembler_sp->GetInstructionList().Dump (&strm, show_address, show_bytes, &exe_ctx);
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return true;
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}
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return false;
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}
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//Symbol *
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//Function::CalculateSymbolContextSymbol ()
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//{
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// return // TODO: find the symbol for the function???
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//}
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void
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Function::DumpSymbolContext(Stream *s)
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{
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m_comp_unit->DumpSymbolContext(s);
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s->Printf(", Function{0x%8.8" PRIx64 "}", GetID());
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}
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size_t
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Function::MemorySize () const
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{
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size_t mem_size = sizeof(Function) + m_block.MemorySize();
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return mem_size;
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}
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clang::DeclContext *
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Function::GetClangDeclContext()
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{
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SymbolContext sc;
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CalculateSymbolContext (&sc);
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if (!sc.module_sp)
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return NULL;
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SymbolVendor *sym_vendor = sc.module_sp->GetSymbolVendor();
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if (!sym_vendor)
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return NULL;
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SymbolFile *sym_file = sym_vendor->GetSymbolFile();
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if (!sym_file)
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return NULL;
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return sym_file->GetClangDeclContextForTypeUID (sc, m_uid);
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}
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Type*
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Function::GetType()
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{
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if (m_type == NULL)
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{
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SymbolContext sc;
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CalculateSymbolContext (&sc);
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if (!sc.module_sp)
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return NULL;
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SymbolVendor *sym_vendor = sc.module_sp->GetSymbolVendor();
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if (sym_vendor == NULL)
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return NULL;
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SymbolFile *sym_file = sym_vendor->GetSymbolFile();
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if (sym_file == NULL)
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return NULL;
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m_type = sym_file->ResolveTypeUID(m_type_uid);
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}
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return m_type;
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}
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const Type*
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Function::GetType() const
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{
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return m_type;
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}
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ClangASTType
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Function::GetClangType()
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{
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Type *function_type = GetType();
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if (function_type)
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return function_type->GetClangFullType();
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return ClangASTType();
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}
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uint32_t
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Function::GetPrologueByteSize ()
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{
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if (m_prologue_byte_size == 0 && m_flags.IsClear(flagsCalculatedPrologueSize))
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{
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m_flags.Set(flagsCalculatedPrologueSize);
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LineTable* line_table = m_comp_unit->GetLineTable ();
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if (line_table)
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{
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LineEntry first_line_entry;
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uint32_t first_line_entry_idx = UINT32_MAX;
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if (line_table->FindLineEntryByAddress(GetAddressRange().GetBaseAddress(), first_line_entry, &first_line_entry_idx))
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{
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// Make sure the first line entry isn't already the end of the prologue
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addr_t prologue_end_file_addr = LLDB_INVALID_ADDRESS;
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if (first_line_entry.is_prologue_end)
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{
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prologue_end_file_addr = first_line_entry.range.GetBaseAddress().GetFileAddress();
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}
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else
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{
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// Check the first few instructions and look for one that has
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// is_prologue_end set to true.
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const uint32_t last_line_entry_idx = first_line_entry_idx + 6;
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for (uint32_t idx = first_line_entry_idx + 1; idx < last_line_entry_idx; ++idx)
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{
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LineEntry line_entry;
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if (line_table->GetLineEntryAtIndex (idx, line_entry))
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{
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if (line_entry.is_prologue_end)
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{
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prologue_end_file_addr = line_entry.range.GetBaseAddress().GetFileAddress();
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break;
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}
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}
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}
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}
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// If we didn't find the end of the prologue in the line tables,
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// then just use the end address of the first line table entry
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if (prologue_end_file_addr == LLDB_INVALID_ADDRESS)
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{
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// Check the first few instructions and look for one that has
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// a line number that's different than the first entry.
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const uint32_t last_line_entry_idx = first_line_entry_idx + 6;
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for (uint32_t idx = first_line_entry_idx + 1; idx < last_line_entry_idx; ++idx)
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{
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LineEntry line_entry;
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if (line_table->GetLineEntryAtIndex (idx, line_entry))
|
|
{
|
|
if (line_entry.line != first_line_entry.line)
|
|
{
|
|
prologue_end_file_addr = line_entry.range.GetBaseAddress().GetFileAddress();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (prologue_end_file_addr == LLDB_INVALID_ADDRESS)
|
|
{
|
|
prologue_end_file_addr = first_line_entry.range.GetBaseAddress().GetFileAddress() + first_line_entry.range.GetByteSize();
|
|
}
|
|
}
|
|
const addr_t func_start_file_addr = m_range.GetBaseAddress().GetFileAddress();
|
|
const addr_t func_end_file_addr = func_start_file_addr + m_range.GetByteSize();
|
|
|
|
// Verify that this prologue end file address in the function's
|
|
// address range just to be sure
|
|
if (func_start_file_addr < prologue_end_file_addr && prologue_end_file_addr < func_end_file_addr)
|
|
{
|
|
m_prologue_byte_size = prologue_end_file_addr - func_start_file_addr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return m_prologue_byte_size;
|
|
}
|
|
|
|
|
|
|