mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
e6b49ec077
Previous version of this patch failed on darwin targets because of different handling of cross-debug-section relocations. This fixes the tests to emit the DW_AT_str_offsets_base attribute correctly in both cases. Since doing this is a non-trivial amount of code, and I'm going to need it in more than one test, I've added a helper function to the dwarfgen DIE class to do it. Original commit message follows: The motivation for this is D49493, where we'd like to test details of debug_str_offsets behavior which is difficult to trigger from a traditional test. This adds the plubming necessary for dwarfgen to generate this section. The more interesting changes are: - I've moved emitStringOffsetsTableHeader function from DwarfFile to DwarfStringPool, so I can generate the section header more easily from the unit test. - added a new addAttribute overload taking an MCExpr*. This is used to generate the DW_AT_str_offsets_base, which links a compile unit to the offset table. I've also added a basic test for reading and writing DW_form_strx forms. Reviewers: dblaikie, JDevlieghere, probinson Subscribers: llvm-commits, aprantl Differential Revision: https://reviews.llvm.org/D49670 llvm-svn: 338031
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
//===- llvm/CodeGen/DwarfStringPool.h - Dwarf Debug Framework ---*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
|
|
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
|
|
|
|
#include "llvm/ADT/StringMap.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/CodeGen/DwarfStringPoolEntry.h"
|
|
#include "llvm/Support/Allocator.h"
|
|
|
|
namespace llvm {
|
|
|
|
class AsmPrinter;
|
|
class MCSection;
|
|
class MCSymbol;
|
|
|
|
// Collection of strings for this unit and assorted symbols.
|
|
// A String->Symbol mapping of strings used by indirect
|
|
// references.
|
|
class DwarfStringPool {
|
|
using EntryTy = DwarfStringPoolEntry;
|
|
|
|
StringMap<EntryTy, BumpPtrAllocator &> Pool;
|
|
StringRef Prefix;
|
|
unsigned NumBytes = 0;
|
|
bool ShouldCreateSymbols;
|
|
|
|
public:
|
|
using EntryRef = DwarfStringPoolEntryRef;
|
|
|
|
DwarfStringPool(BumpPtrAllocator &A, AsmPrinter &Asm, StringRef Prefix);
|
|
|
|
void emitStringOffsetsTableHeader(AsmPrinter &Asm, MCSection *OffsetSection,
|
|
MCSymbol *StartSym);
|
|
|
|
void emit(AsmPrinter &Asm, MCSection *StrSection,
|
|
MCSection *OffsetSection = nullptr,
|
|
bool UseRelativeOffsets = false);
|
|
|
|
bool empty() const { return Pool.empty(); }
|
|
|
|
unsigned size() const { return Pool.size(); }
|
|
|
|
/// Get a reference to an entry in the string pool.
|
|
EntryRef getEntry(AsmPrinter &Asm, StringRef Str);
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFSTRINGPOOL_H
|