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81c22f6104
process IDs, and thread IDs, but was mainly needed for for the UserID's for Types so that DWARF with debug map can work flawlessly. With DWARF in .o files the type ID was the DIE offset in the DWARF for the .o file which is not unique across all .o files, so now the SymbolFileDWARFDebugMap class will make the .o file index part (the high 32 bits) of the unique type identifier so it can uniquely identify the types. llvm-svn: 142534
105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
//===-- StackID.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/Target/StackID.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/Stream.h"
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#include "lldb/Symbol/Block.h"
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#include "lldb/Symbol/Symbol.h"
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#include "lldb/Symbol/SymbolContext.h"
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using namespace lldb_private;
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void
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StackID::Dump (Stream *s)
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{
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s->Printf("StackID (pc = 0x%16.16llx, cfa = 0x%16.16llx, symbol_scope = %p", (uint64_t)m_pc, (uint64_t)m_cfa, m_symbol_scope);
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if (m_symbol_scope)
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{
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SymbolContext sc;
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m_symbol_scope->CalculateSymbolContext (&sc);
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if (sc.block)
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s->Printf(" (Block {0x%8.8llx})", sc.block->GetID());
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else if (sc.symbol)
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s->Printf(" (Symbol{0x%8.8x})", sc.symbol->GetID());
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}
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s->PutCString(") ");
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}
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bool
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lldb_private::operator== (const StackID& lhs, const StackID& rhs)
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{
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if (lhs.GetCallFrameAddress() != rhs.GetCallFrameAddress())
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return false;
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SymbolContextScope *lhs_scope = lhs.GetSymbolContextScope();
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SymbolContextScope *rhs_scope = rhs.GetSymbolContextScope();
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// Only compare the PC values if both symbol context scopes are NULL
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if (lhs_scope == NULL && rhs_scope == NULL)
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return lhs.GetPC() == rhs.GetPC();
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return lhs_scope == rhs_scope;
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}
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bool
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lldb_private::operator!= (const StackID& lhs, const StackID& rhs)
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{
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if (lhs.GetCallFrameAddress() != rhs.GetCallFrameAddress())
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return true;
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SymbolContextScope *lhs_scope = lhs.GetSymbolContextScope();
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SymbolContextScope *rhs_scope = rhs.GetSymbolContextScope();
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if (lhs_scope == NULL && rhs_scope == NULL)
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return lhs.GetPC() != rhs.GetPC();
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return lhs_scope != rhs_scope;
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}
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bool
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lldb_private::operator< (const StackID& lhs, const StackID& rhs)
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{
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const lldb::addr_t lhs_cfa = lhs.GetCallFrameAddress();
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const lldb::addr_t rhs_cfa = rhs.GetCallFrameAddress();
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if (lhs_cfa != rhs_cfa)
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return lhs_cfa < rhs_cfa;
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SymbolContextScope *lhs_scope = lhs.GetSymbolContextScope();
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SymbolContextScope *rhs_scope = rhs.GetSymbolContextScope();
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if (lhs_scope != NULL && rhs_scope != NULL)
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{
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// Same exact scope, lhs is not less than (younger than rhs)
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if (lhs_scope == rhs_scope)
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return false;
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SymbolContext lhs_sc;
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SymbolContext rhs_sc;
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lhs_scope->CalculateSymbolContext (&lhs_sc);
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rhs_scope->CalculateSymbolContext (&rhs_sc);
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// Items with the same function can only be compared
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if (lhs_sc.function == rhs_sc.function &&
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lhs_sc.function != NULL && lhs_sc.block != NULL &&
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rhs_sc.function != NULL && rhs_sc.block != NULL)
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{
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return rhs_sc.block->Contains (lhs_sc.block);
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}
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}
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return false;
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}
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