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425f75172f
Currently, we emit DW_AT_addr_base that points to the beginning of the .debug_addr section. That is not correct for the DWARF5 case because address table contains the header and the attribute should point to the first entry following the header. This is currently the reason why LLDB does not work with such executables correctly. Patch fixes the issue. Differential revision: https://reviews.llvm.org/D52168 llvm-svn: 342635
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
//===- llvm/CodeGen/AddressPool.h - Dwarf Debug Framework -------*- 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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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_ADDRESSPOOL_H
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#define LLVM_LIB_CODEGEN_ASMPRINTER_ADDRESSPOOL_H
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#include "llvm/ADT/DenseMap.h"
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namespace llvm {
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class AsmPrinter;
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class MCSection;
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class MCSymbol;
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// Collection of addresses for this unit and assorted labels.
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// A Symbol->unsigned mapping of addresses used by indirect
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// references.
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class AddressPool {
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struct AddressPoolEntry {
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unsigned Number;
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bool TLS;
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AddressPoolEntry(unsigned Number, bool TLS) : Number(Number), TLS(TLS) {}
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};
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DenseMap<const MCSymbol *, AddressPoolEntry> Pool;
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/// Record whether the AddressPool has been queried for an address index since
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/// the last "resetUsedFlag" call. Used to implement type unit fallback - a
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/// type that references addresses cannot be placed in a type unit when using
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/// fission.
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bool HasBeenUsed = false;
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public:
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AddressPool() = default;
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/// Returns the index into the address pool with the given
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/// label/symbol.
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unsigned getIndex(const MCSymbol *Sym, bool TLS = false);
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void emit(AsmPrinter &Asm, MCSection *AddrSection);
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bool isEmpty() { return Pool.empty(); }
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bool hasBeenUsed() const { return HasBeenUsed; }
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void resetUsedFlag() { HasBeenUsed = false; }
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MCSymbol *getLabel() { return AddressTableBaseSym; }
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void setLabel(MCSymbol *Sym) { AddressTableBaseSym = Sym; }
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private:
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void emitHeader(AsmPrinter &Asm, MCSection *Section);
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/// Symbol designates the start of the contribution to the address table.
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MCSymbol *AddressTableBaseSym = nullptr;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_CODEGEN_ASMPRINTER_ADDRESSPOOL_H
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