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6dadd508e7906cf994ee96806f4ec3f80a9c8a41
llvm-project/lldb/source/Core/Disassembler.cpp
Greg Clayton 6dadd508e7 Added a new bool parameter to many of the DumpStopContext() methods that 
might dump file paths that allows the dumping of full paths or just the
basenames. Switched the stack frame dumping code to use just the basenames for
the files instead of the full path.

Modified the StackID class to no rely on needing the start PC for the current
function/symbol since we can use the SymbolContextScope to uniquely identify
that, unless there is no symbol context scope. In that case we can rely upon
the current PC value. This saves the StackID from having to calculate the 
start PC when the StackFrame::GetStackID() accessor is called.

Also improved the StackID less than operator to correctly handle inlined stack
frames in the same stack.

llvm-svn: 112867
2010-09-02 21:44:10 +00:00

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//===-- Disassembler.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/Core/Disassembler.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/DataExtractor.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Timer.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
#define DEFAULT_DISASM_BYTE_SIZE 32
using namespace lldb;
using namespace lldb_private;
Disassembler*
Disassembler::FindPlugin (const ArchSpec &arch)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"Disassembler::FindPlugin (arch = %s)",
arch.AsCString());
std::auto_ptr<Disassembler> disassembler_ap;
DisassemblerCreateInstance create_callback;
for (uint32_t idx = 0; (create_callback = PluginManager::GetDisassemblerCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
disassembler_ap.reset (create_callback(arch));
if (disassembler_ap.get())
return disassembler_ap.release();
}
return NULL;
}
size_t
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const ExecutionContext &exe_ctx,
SymbolContextList &sc_list,
uint32_t num_mixed_context_lines,
bool show_bytes,
Stream &strm
)
{
size_t success_count = 0;
const size_t count = sc_list.GetSize();
SymbolContext sc;
AddressRange range;
for (size_t i=0; i<count; ++i)
{
if (sc_list.GetContextAtIndex(i, sc) == false)
break;
if (sc.GetAddressRange(eSymbolContextFunction | eSymbolContextSymbol, range))
{
if (Disassemble (debugger, arch, exe_ctx, range, num_mixed_context_lines, show_bytes, strm))
{
++success_count;
strm.EOL();
}
}
}
return success_count;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const ExecutionContext &exe_ctx,
const ConstString &name,
Module *module,
uint32_t num_mixed_context_lines,
bool show_bytes,
Stream &strm
)
{
if (exe_ctx.target == NULL && name)
return false;
SymbolContextList sc_list;
if (module)
{
if (!module->FindFunctions (name,
eFunctionNameTypeBase | eFunctionNameTypeFull | eFunctionNameTypeMethod | eFunctionNameTypeSelector,
true,
sc_list))
return false;
}
else
{
if (exe_ctx.target->GetImages().FindFunctions (name,
eFunctionNameTypeBase | eFunctionNameTypeFull | eFunctionNameTypeMethod | eFunctionNameTypeSelector,
false,
sc_list))
{
return Disassemble (debugger, arch, exe_ctx, sc_list, num_mixed_context_lines, show_bytes, strm);
}
else if (exe_ctx.target->GetImages().FindSymbolsWithNameAndType(name, eSymbolTypeCode, sc_list))
{
return Disassemble (debugger, arch, exe_ctx, sc_list, num_mixed_context_lines, show_bytes, strm);
}
}
return false;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const ExecutionContext &exe_ctx,
const AddressRange &disasm_range,
uint32_t num_mixed_context_lines,
bool show_bytes,
Stream &strm
)
{
if (disasm_range.GetByteSize())
{
Disassembler *disassembler = Disassembler::FindPlugin(arch);
if (disassembler)
{
AddressRange range(disasm_range);
Process *process = exe_ctx.process;
// If we weren't passed in a section offset address range,
// try and resolve it to something
if (range.GetBaseAddress().IsSectionOffset() == false)
{
if (process && process->IsAlive())
{
process->ResolveLoadAddress (range.GetBaseAddress().GetOffset(), range.GetBaseAddress());
}
else if (exe_ctx.target)
{
exe_ctx.target->GetImages().ResolveFileAddress (range.GetBaseAddress().GetOffset(), range.GetBaseAddress());
}
}
DataExtractor data;
size_t bytes_disassembled = disassembler->ParseInstructions (&exe_ctx, range, data);
if (bytes_disassembled == 0)
{
return false;
}
else
{
// We got some things disassembled...
size_t num_instructions = disassembler->GetInstructionList().GetSize();
uint32_t offset = 0;
SymbolContext sc;
SymbolContext prev_sc;
AddressRange sc_range;
if (num_mixed_context_lines)
strm.IndentMore ();
Address addr(range.GetBaseAddress());
// We extract the section to make sure we don't transition out
// of the current section when disassembling
const Section *addr_section = addr.GetSection();
Module *range_module = range.GetBaseAddress().GetModule();
for (size_t i=0; i<num_instructions; ++i)
{
Disassembler::Instruction *inst = disassembler->GetInstructionList().GetInstructionAtIndex (i);
if (inst)
{
addr_t file_addr = addr.GetFileAddress();
if (addr_section == NULL || addr_section->ContainsFileAddress (file_addr) == false)
{
if (range_module)
range_module->ResolveFileAddress (file_addr, addr);
else if (exe_ctx.target)
exe_ctx.target->GetImages().ResolveFileAddress (file_addr, addr);
addr_section = addr.GetSection();
}
prev_sc = sc;
if (addr_section)
{
Module *module = addr_section->GetModule();
uint32_t resolved_mask = module->ResolveSymbolContextForAddress(addr, eSymbolContextEverything, sc);
if (resolved_mask)
{
if (prev_sc.function != sc.function || prev_sc.symbol != sc.symbol)
{
if (prev_sc.function || prev_sc.symbol)
strm.EOL();
strm << sc.module_sp->GetFileSpec().GetFilename();
if (sc.function)
strm << '`' << sc.function->GetMangled().GetName();
else if (sc.symbol)
strm << '`' << sc.symbol->GetMangled().GetName();
strm << ":\n";
}
if (num_mixed_context_lines && !sc_range.ContainsFileAddress (addr))
{
sc.GetAddressRange (eSymbolContextEverything, sc_range);
if (sc != prev_sc)
{
if (offset != 0)
strm.EOL();
sc.DumpStopContext(&strm, process, addr, true, true, false);
if (sc.comp_unit && sc.line_entry.IsValid())
{
debugger.GetSourceManager().DisplaySourceLinesWithLineNumbers (sc.line_entry.file,
sc.line_entry.line,
num_mixed_context_lines,
num_mixed_context_lines,
num_mixed_context_lines ? "->" : "",
&strm);
}
}
}
}
else
{
sc.Clear();
}
}
if (num_mixed_context_lines)
strm.IndentMore ();
strm.Indent();
size_t inst_byte_size = inst->GetByteSize();
inst->Dump(&strm, &addr, show_bytes ? &data : NULL, offset, exe_ctx, show_bytes);
strm.EOL();
offset += inst_byte_size;
addr.SetOffset (addr.GetOffset() + inst_byte_size);
if (num_mixed_context_lines)
strm.IndentLess ();
}
else
{
break;
}
}
if (num_mixed_context_lines)
strm.IndentLess ();
}
}
return true;
}
return false;
}
bool
Disassembler::Disassemble
(
Debugger &debugger,
const ArchSpec &arch,
const ExecutionContext &exe_ctx,
uint32_t num_mixed_context_lines,
bool show_bytes,
Stream &strm
)
{
AddressRange range;
if (exe_ctx.frame)
{
SymbolContext sc(exe_ctx.frame->GetSymbolContext(eSymbolContextFunction | eSymbolContextSymbol));
if (sc.function)
{
range = sc.function->GetAddressRange();
}
else if (sc.symbol && sc.symbol->GetAddressRangePtr())
{
range = *sc.symbol->GetAddressRangePtr();
}
else
{
range.GetBaseAddress() = exe_ctx.frame->GetFrameCodeAddress();
}
if (range.GetBaseAddress().IsValid() && range.GetByteSize() == 0)
range.SetByteSize (DEFAULT_DISASM_BYTE_SIZE);
}
return Disassemble(debugger, arch, exe_ctx, range, num_mixed_context_lines, show_bytes, strm);
}
Disassembler::Instruction::Instruction()
{
}
Disassembler::Instruction::~Instruction()
{
}
Disassembler::InstructionList::InstructionList() :
m_instructions()
{
}
Disassembler::InstructionList::~InstructionList()
{
}
size_t
Disassembler::InstructionList::GetSize() const
{
return m_instructions.size();
}
Disassembler::Instruction *
Disassembler::InstructionList::GetInstructionAtIndex (uint32_t idx)
{
if (idx < m_instructions.size())
return m_instructions[idx].get();
return NULL;
}
const Disassembler::Instruction *
Disassembler::InstructionList::GetInstructionAtIndex (uint32_t idx) const
{
if (idx < m_instructions.size())
return m_instructions[idx].get();
return NULL;
}
void
Disassembler::InstructionList::Clear()
{
m_instructions.clear();
}
void
Disassembler::InstructionList::AppendInstruction (Instruction::shared_ptr &inst_sp)
{
if (inst_sp)
m_instructions.push_back(inst_sp);
}
size_t
Disassembler::ParseInstructions
(
const ExecutionContext *exe_ctx,
const AddressRange &range,
DataExtractor& data
)
{
Target *target = exe_ctx->target;
const addr_t byte_size = range.GetByteSize();
if (target == NULL || byte_size == 0 || !range.GetBaseAddress().IsValid())
return 0;
DataBufferHeap *heap_buffer = new DataBufferHeap (byte_size, '\0');
DataBufferSP data_sp(heap_buffer);
Error error;
const size_t bytes_read = target->ReadMemory (range.GetBaseAddress(), heap_buffer->GetBytes(), heap_buffer->GetByteSize(), error);
if (bytes_read > 0)
{
if (bytes_read != heap_buffer->GetByteSize())
heap_buffer->SetByteSize (bytes_read);
data.SetData(data_sp);
if (exe_ctx->process)
{
data.SetByteOrder(exe_ctx->process->GetByteOrder());
data.SetAddressByteSize(exe_ctx->process->GetAddressByteSize());
}
else
{
data.SetByteOrder(target->GetArchitecture().GetDefaultEndian());
data.SetAddressByteSize(target->GetArchitecture().GetAddressByteSize());
}
return DecodeInstructions (data, 0, UINT32_MAX);
}
return 0;
}
//----------------------------------------------------------------------
// Disassembler copy constructor
//----------------------------------------------------------------------
Disassembler::Disassembler(const ArchSpec& arch) :
m_arch (arch),
m_instruction_list(),
m_base_addr(LLDB_INVALID_ADDRESS)
{
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
Disassembler::~Disassembler()
{
}
Disassembler::InstructionList &
Disassembler::GetInstructionList ()
{
return m_instruction_list;
}
const Disassembler::InstructionList &
Disassembler::GetInstructionList () const
{
return m_instruction_list;
}
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