//
//===----------------------------------------------------------------------===//
-#ifndef CODEGEN_ASMPRINTER_DWARFACCELTABLE_H__
-#define CODEGEN_ASMPRINTER_DWARFACCELTABLE_H__
+#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFACCELTABLE_H
+#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFACCELTABLE_H
#include "DIE.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/Compiler.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
-#include <map>
#include <vector>
// The dwarf accelerator tables are an indirect hash table optimized
namespace llvm {
class AsmPrinter;
-class DIE;
-class DwarfUnits;
+class DwarfFile;
class DwarfAccelTable {
- enum HashFunctionType {
- eHashFunctionDJB = 0u
- };
-
- static uint32_t HashDJB (StringRef Str) {
+ static uint32_t HashDJB(StringRef Str) {
uint32_t h = 5381;
for (unsigned i = 0, e = Str.size(); i != e; ++i)
h = ((h << 5) + h) + Str[i];
// Helper function to compute the number of buckets needed based on
// the number of unique hashes.
- void ComputeBucketCount (void);
+ void ComputeBucketCount(void);
struct TableHeader {
- uint32_t magic; // 'HASH' magic value to allow endian detection
- uint16_t version; // Version number.
- uint16_t hash_function; // The hash function enumeration that was used.
- uint32_t bucket_count; // The number of buckets in this hash table.
- uint32_t hashes_count; // The total number of unique hash values
- // and hash data offsets in this table.
- uint32_t header_data_len; // The bytes to skip to get to the hash
- // indexes (buckets) for correct alignment.
+ uint32_t magic; // 'HASH' magic value to allow endian detection
+ uint16_t version; // Version number.
+ uint16_t hash_function; // The hash function enumeration that was used.
+ uint32_t bucket_count; // The number of buckets in this hash table.
+ uint32_t hashes_count; // The total number of unique hash values
+ // and hash data offsets in this table.
+ uint32_t header_data_len; // The bytes to skip to get to the hash
+ // indexes (buckets) for correct alignment.
// Also written to disk is the implementation specific header data.
static const uint32_t MagicHash = 0x48415348;
- TableHeader (uint32_t data_len) :
- magic (MagicHash), version (1), hash_function (eHashFunctionDJB),
- bucket_count (0), hashes_count (0), header_data_len (data_len)
- {}
+ TableHeader(uint32_t data_len)
+ : magic(MagicHash), version(1),
+ hash_function(dwarf::DW_hash_function_djb), bucket_count(0),
+ hashes_count(0), header_data_len(data_len) {}
#ifndef NDEBUG
void print(raw_ostream &O) {
// uint32_t die_offset_base
// uint32_t atom_count
// atom_count Atoms
- enum AtomType {
- eAtomTypeNULL = 0u,
- eAtomTypeDIEOffset = 1u, // DIE offset, check form for encoding
- eAtomTypeCUOffset = 2u, // DIE offset of the compiler unit header that
- // contains the item in question
- eAtomTypeTag = 3u, // DW_TAG_xxx value, should be encoded as
- // DW_FORM_data1 (if no tags exceed 255) or
- // DW_FORM_data2.
- eAtomTypeNameFlags = 4u, // Flags from enum NameFlags
- eAtomTypeTypeFlags = 5u // Flags from enum TypeFlags
- };
-
- enum TypeFlags {
- eTypeFlagClassMask = 0x0000000fu,
-
- // Always set for C++, only set for ObjC if this is the
- // @implementation for a class.
- eTypeFlagClassIsImplementation = ( 1u << 1 )
- };
// Make these public so that they can be used as a general interface to
// the class.
struct Atom {
- AtomType type; // enum AtomType
+ uint16_t type; // enum AtomType
uint16_t form; // DWARF DW_FORM_ defines
- Atom(AtomType type, uint16_t form) : type(type), form(form) {}
- static const char * AtomTypeString(enum AtomType);
+ LLVM_CONSTEXPR Atom(uint16_t type, uint16_t form)
+ : type(type), form(form) {}
#ifndef NDEBUG
void print(raw_ostream &O) {
- O << "Type: " << AtomTypeString(type) << "\n"
+ O << "Type: " << dwarf::AtomTypeString(type) << "\n"
<< "Form: " << dwarf::FormEncodingString(form) << "\n";
}
- void dump() {
- print(dbgs());
- }
+ void dump() { print(dbgs()); }
#endif
};
- private:
+private:
struct TableHeaderData {
uint32_t die_offset_base;
- SmallVector<Atom, 1> Atoms;
+ SmallVector<Atom, 3> Atoms;
TableHeaderData(ArrayRef<Atom> AtomList, uint32_t offset = 0)
- : die_offset_base(offset), Atoms(AtomList.begin(), AtomList.end()) { }
+ : die_offset_base(offset), Atoms(AtomList.begin(), AtomList.end()) {}
#ifndef NDEBUG
- void print (raw_ostream &O) {
+ void print(raw_ostream &O) {
O << "die_offset_base: " << die_offset_base << "\n";
for (size_t i = 0; i < Atoms.size(); i++)
Atoms[i].print(O);
}
- void dump() {
- print(dbgs());
- }
+ void dump() { print(dbgs()); }
#endif
};
// HashData[hash_data_count]
public:
struct HashDataContents {
- DIE *Die; // Offsets
+ const DIE *Die; // Offsets
char Flags; // Specific flags to output
- HashDataContents(DIE *D, char Flags) :
- Die(D),
- Flags(Flags) { }
- #ifndef NDEBUG
+ HashDataContents(const DIE *D, char Flags) : Die(D), Flags(Flags) {}
+#ifndef NDEBUG
void print(raw_ostream &O) const {
O << " Offset: " << Die->getOffset() << "\n";
O << " Tag: " << dwarf::TagString(Die->getTag()) << "\n";
O << " Flags: " << Flags << "\n";
}
- #endif
+#endif
};
+
private:
+ // String Data
+ struct DataArray {
+ MCSymbol *StrSym;
+ std::vector<HashDataContents *> Values;
+ DataArray() : StrSym(nullptr) {}
+ };
+ friend struct HashData;
struct HashData {
StringRef Str;
uint32_t HashValue;
MCSymbol *Sym;
- ArrayRef<HashDataContents*> Data; // offsets
- HashData(StringRef S, ArrayRef<HashDataContents*> Data)
- : Str(S), Data(Data) {
+ DwarfAccelTable::DataArray &Data; // offsets
+ HashData(StringRef S, DwarfAccelTable::DataArray &Data)
+ : Str(S), Data(Data) {
HashValue = DwarfAccelTable::HashDJB(S);
}
- #ifndef NDEBUG
+#ifndef NDEBUG
void print(raw_ostream &O) {
O << "Name: " << Str << "\n";
O << " Hash Value: " << format("0x%x", HashValue) << "\n";
- O << " Symbol: " ;
- if (Sym) Sym->print(O);
- else O << "<none>";
+ O << " Symbol: ";
+ if (Sym)
+ Sym->print(O);
+ else
+ O << "<none>";
O << "\n";
- for (size_t i = 0; i < Data.size(); i++) {
- O << " Offset: " << Data[i]->Die->getOffset() << "\n";
- O << " Tag: " << dwarf::TagString(Data[i]->Die->getTag()) << "\n";
- O << " Flags: " << Data[i]->Flags << "\n";
+ for (HashDataContents *C : Data.Values) {
+ O << " Offset: " << C->Die->getOffset() << "\n";
+ O << " Tag: " << dwarf::TagString(C->Die->getTag()) << "\n";
+ O << " Flags: " << C->Flags << "\n";
}
}
- void dump() {
- print(dbgs());
- }
- #endif
+ void dump() { print(dbgs()); }
+#endif
};
- DwarfAccelTable(const DwarfAccelTable&) LLVM_DELETED_FUNCTION;
- void operator=(const DwarfAccelTable&) LLVM_DELETED_FUNCTION;
+ DwarfAccelTable(const DwarfAccelTable &) LLVM_DELETED_FUNCTION;
+ void operator=(const DwarfAccelTable &) LLVM_DELETED_FUNCTION;
// Internal Functions
void EmitHeader(AsmPrinter *);
void EmitBuckets(AsmPrinter *);
void EmitHashes(AsmPrinter *);
void EmitOffsets(AsmPrinter *, MCSymbol *);
- void EmitData(AsmPrinter *, DwarfUnits *D);
+ void EmitData(AsmPrinter *, DwarfFile *D, MCSymbol *StrSym);
// Allocator for HashData and HashDataContents.
BumpPtrAllocator Allocator;
// Output Variables
TableHeader Header;
TableHeaderData HeaderData;
- std::vector<HashData*> Data;
+ std::vector<HashData *> Data;
- // String Data
- typedef std::vector<HashDataContents*> DataArray;
- typedef StringMap<DataArray, BumpPtrAllocator&> StringEntries;
+ typedef StringMap<DataArray, BumpPtrAllocator &> StringEntries;
StringEntries Entries;
// Buckets/Hashes/Offsets
- typedef std::vector<HashData*> HashList;
+ typedef std::vector<HashData *> HashList;
typedef std::vector<HashList> BucketList;
BucketList Buckets;
HashList Hashes;
// Public Implementation
- public:
+public:
DwarfAccelTable(ArrayRef<DwarfAccelTable::Atom>);
- ~DwarfAccelTable();
- void AddName(StringRef, DIE*, char = 0);
- void FinalizeTable(AsmPrinter *, const char *);
- void Emit(AsmPrinter *, MCSymbol *, DwarfUnits *);
+ void AddName(StringRef Name, MCSymbol *StrSym, const DIE *Die,
+ char Flags = 0);
+ void FinalizeTable(AsmPrinter *, StringRef);
+ void Emit(AsmPrinter *, MCSymbol *, DwarfFile *, MCSymbol *StrSym);
#ifndef NDEBUG
void print(raw_ostream &O);
void dump() { print(dbgs()); }
#endif
};
-
}
#endif
projects / oota-llvm.git / blobdiff