mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
fd2aefafba
Summary:
This patch implements main entry and auxiliary entries of symbol table generation for llvm-readobj on AIX.
The source code of aix_xcoff_xlc_test8.o (compile with xlc) is:
-bash-4.2$ cat test8.c
extern int i;
extern int TestforXcoff;
extern int fun(int i);
static int static_i;
char* p="abcd";
int fun1(int j) {
static_i++;
j++;
j=j+*p;
return j;
}
int main() {
i++;
fun(i);
return fun1(i);
}
Patch provided by DiggerLin
Differential Revision: https://reviews.llvm.org/D65240
llvm-svn: 370097
314 lines
11 KiB
C++
314 lines
11 KiB
C++
//===- XCOFFObjectFile.h - XCOFF object file implementation -----*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares the XCOFFObjectFile class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_OBJECT_XCOFFOBJECTFILE_H
|
|
#define LLVM_OBJECT_XCOFFOBJECTFILE_H
|
|
|
|
#include "llvm/BinaryFormat/XCOFF.h"
|
|
#include "llvm/Object/ObjectFile.h"
|
|
|
|
namespace llvm {
|
|
namespace object {
|
|
|
|
struct XCOFFFileHeader32 {
|
|
support::ubig16_t Magic;
|
|
support::ubig16_t NumberOfSections;
|
|
|
|
// Unix time value, value of 0 indicates no timestamp.
|
|
// Negative values are reserved.
|
|
support::big32_t TimeStamp;
|
|
|
|
support::ubig32_t SymbolTableOffset; // File offset to symbol table.
|
|
support::big32_t NumberOfSymTableEntries;
|
|
support::ubig16_t AuxHeaderSize;
|
|
support::ubig16_t Flags;
|
|
};
|
|
|
|
struct XCOFFFileHeader64 {
|
|
support::ubig16_t Magic;
|
|
support::ubig16_t NumberOfSections;
|
|
|
|
// Unix time value, value of 0 indicates no timestamp.
|
|
// Negative values are reserved.
|
|
support::big32_t TimeStamp;
|
|
|
|
support::ubig64_t SymbolTableOffset; // File offset to symbol table.
|
|
support::ubig16_t AuxHeaderSize;
|
|
support::ubig16_t Flags;
|
|
support::ubig32_t NumberOfSymTableEntries;
|
|
};
|
|
|
|
struct XCOFFSectionHeader32 {
|
|
char Name[XCOFF::NameSize];
|
|
support::ubig32_t PhysicalAddress;
|
|
support::ubig32_t VirtualAddress;
|
|
support::ubig32_t SectionSize;
|
|
support::ubig32_t FileOffsetToRawData;
|
|
support::ubig32_t FileOffsetToRelocationInfo;
|
|
support::ubig32_t FileOffsetToLineNumberInfo;
|
|
support::ubig16_t NumberOfRelocations;
|
|
support::ubig16_t NumberOfLineNumbers;
|
|
support::big32_t Flags;
|
|
|
|
StringRef getName() const;
|
|
};
|
|
|
|
struct XCOFFSectionHeader64 {
|
|
char Name[XCOFF::NameSize];
|
|
support::ubig64_t PhysicalAddress;
|
|
support::ubig64_t VirtualAddress;
|
|
support::ubig64_t SectionSize;
|
|
support::big64_t FileOffsetToRawData;
|
|
support::big64_t FileOffsetToRelocationInfo;
|
|
support::big64_t FileOffsetToLineNumberInfo;
|
|
support::ubig32_t NumberOfRelocations;
|
|
support::ubig32_t NumberOfLineNumbers;
|
|
support::big32_t Flags;
|
|
char Padding[4];
|
|
|
|
StringRef getName() const;
|
|
};
|
|
|
|
struct XCOFFSymbolEntry {
|
|
enum { NAME_IN_STR_TBL_MAGIC = 0x0 };
|
|
typedef struct {
|
|
support::big32_t Magic; // Zero indicates name in string table.
|
|
support::ubig32_t Offset;
|
|
} NameInStrTblType;
|
|
|
|
typedef struct {
|
|
uint8_t LanguageId;
|
|
uint8_t CpuTypeId;
|
|
} CFileLanguageIdAndTypeIdType;
|
|
|
|
union {
|
|
char SymbolName[XCOFF::NameSize];
|
|
NameInStrTblType NameInStrTbl;
|
|
};
|
|
|
|
support::ubig32_t Value; // Symbol value; storage class-dependent.
|
|
support::big16_t SectionNumber;
|
|
|
|
union {
|
|
support::ubig16_t SymbolType;
|
|
CFileLanguageIdAndTypeIdType CFileLanguageIdAndTypeId;
|
|
};
|
|
|
|
XCOFF::StorageClass StorageClass;
|
|
uint8_t NumberOfAuxEntries;
|
|
};
|
|
|
|
struct XCOFFStringTable {
|
|
uint32_t Size;
|
|
const char *Data;
|
|
};
|
|
|
|
struct XCOFFCsectAuxEnt32 {
|
|
support::ubig32_t SectionLen;
|
|
support::ubig32_t ParameterHashIndex;
|
|
support::ubig16_t TypeChkSectNum;
|
|
uint8_t SymbolAlignmentAndType;
|
|
XCOFF::StorageMappingClass StorageMappingClass;
|
|
support::ubig32_t StabInfoIndex;
|
|
support::ubig16_t StabSectNum;
|
|
};
|
|
|
|
struct XCOFFFileAuxEnt {
|
|
typedef struct {
|
|
support::big32_t Magic; // Zero indicates name in string table.
|
|
support::ubig32_t Offset;
|
|
char NamePad[XCOFF::FileNamePadSize];
|
|
} NameInStrTblType;
|
|
union {
|
|
char Name[XCOFF::NameSize + XCOFF::FileNamePadSize];
|
|
NameInStrTblType NameInStrTbl;
|
|
};
|
|
XCOFF::CFileStringType Type;
|
|
uint8_t ReservedZeros[2];
|
|
uint8_t AuxType; // 64-bit XCOFF file only.
|
|
};
|
|
|
|
struct XCOFFSectAuxEntForStat {
|
|
support::ubig32_t SectionLength;
|
|
support::ubig16_t NumberOfRelocEnt;
|
|
support::ubig16_t NumberOfLineNum;
|
|
uint8_t Pad[10];
|
|
};
|
|
|
|
class XCOFFObjectFile : public ObjectFile {
|
|
private:
|
|
const void *FileHeader = nullptr;
|
|
const void *SectionHeaderTable = nullptr;
|
|
|
|
const XCOFFSymbolEntry *SymbolTblPtr = nullptr;
|
|
XCOFFStringTable StringTable = {0, nullptr};
|
|
|
|
const XCOFFFileHeader32 *fileHeader32() const;
|
|
const XCOFFFileHeader64 *fileHeader64() const;
|
|
|
|
const XCOFFSectionHeader32 *sectionHeaderTable32() const;
|
|
const XCOFFSectionHeader64 *sectionHeaderTable64() const;
|
|
|
|
size_t getFileHeaderSize() const;
|
|
size_t getSectionHeaderSize() const;
|
|
|
|
const XCOFFSectionHeader32 *toSection32(DataRefImpl Ref) const;
|
|
const XCOFFSectionHeader64 *toSection64(DataRefImpl Ref) const;
|
|
uintptr_t getSectionHeaderTableAddress() const;
|
|
uintptr_t getEndOfSymbolTableAddress() const;
|
|
|
|
// This returns a pointer to the start of the storage for the name field of
|
|
// the 32-bit or 64-bit SectionHeader struct. This string is *not* necessarily
|
|
// null-terminated.
|
|
const char *getSectionNameInternal(DataRefImpl Sec) const;
|
|
|
|
// This function returns string table entry.
|
|
Expected<StringRef> getStringTableEntry(uint32_t Offset) const;
|
|
|
|
static bool isReservedSectionNumber(int16_t SectionNumber);
|
|
|
|
// Constructor and "create" factory function. The constructor is only a thin
|
|
// wrapper around the base constructor. The "create" function fills out the
|
|
// XCOFF-specific information and performs the error checking along the way.
|
|
XCOFFObjectFile(unsigned Type, MemoryBufferRef Object);
|
|
static Expected<std::unique_ptr<XCOFFObjectFile>> create(unsigned Type,
|
|
MemoryBufferRef MBR);
|
|
|
|
// Helper for parsing the StringTable. Returns an 'Error' if parsing failed
|
|
// and an XCOFFStringTable if parsing succeeded.
|
|
static Expected<XCOFFStringTable> parseStringTable(const XCOFFObjectFile *Obj,
|
|
uint64_t Offset);
|
|
|
|
// Make a friend so it can call the private 'create' function.
|
|
friend Expected<std::unique_ptr<ObjectFile>>
|
|
ObjectFile::createXCOFFObjectFile(MemoryBufferRef Object, unsigned FileType);
|
|
|
|
void checkSectionAddress(uintptr_t Addr, uintptr_t TableAddr) const;
|
|
|
|
public:
|
|
// Interface inherited from base classes.
|
|
void moveSymbolNext(DataRefImpl &Symb) const override;
|
|
uint32_t getSymbolFlags(DataRefImpl Symb) const override;
|
|
basic_symbol_iterator symbol_begin() const override;
|
|
basic_symbol_iterator symbol_end() const override;
|
|
|
|
Expected<StringRef> getSymbolName(DataRefImpl Symb) const override;
|
|
Expected<uint64_t> getSymbolAddress(DataRefImpl Symb) const override;
|
|
uint64_t getSymbolValueImpl(DataRefImpl Symb) const override;
|
|
uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override;
|
|
Expected<SymbolRef::Type> getSymbolType(DataRefImpl Symb) const override;
|
|
Expected<section_iterator> getSymbolSection(DataRefImpl Symb) const override;
|
|
|
|
void moveSectionNext(DataRefImpl &Sec) const override;
|
|
Expected<StringRef> getSectionName(DataRefImpl Sec) const override;
|
|
uint64_t getSectionAddress(DataRefImpl Sec) const override;
|
|
uint64_t getSectionIndex(DataRefImpl Sec) const override;
|
|
uint64_t getSectionSize(DataRefImpl Sec) const override;
|
|
Expected<ArrayRef<uint8_t>>
|
|
getSectionContents(DataRefImpl Sec) const override;
|
|
uint64_t getSectionAlignment(DataRefImpl Sec) const override;
|
|
bool isSectionCompressed(DataRefImpl Sec) const override;
|
|
bool isSectionText(DataRefImpl Sec) const override;
|
|
bool isSectionData(DataRefImpl Sec) const override;
|
|
bool isSectionBSS(DataRefImpl Sec) const override;
|
|
|
|
bool isSectionVirtual(DataRefImpl Sec) const override;
|
|
relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
|
|
relocation_iterator section_rel_end(DataRefImpl Sec) const override;
|
|
|
|
void moveRelocationNext(DataRefImpl &Rel) const override;
|
|
uint64_t getRelocationOffset(DataRefImpl Rel) const override;
|
|
symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
|
|
uint64_t getRelocationType(DataRefImpl Rel) const override;
|
|
void getRelocationTypeName(DataRefImpl Rel,
|
|
SmallVectorImpl<char> &Result) const override;
|
|
|
|
section_iterator section_begin() const override;
|
|
section_iterator section_end() const override;
|
|
uint8_t getBytesInAddress() const override;
|
|
StringRef getFileFormatName() const override;
|
|
Triple::ArchType getArch() const override;
|
|
SubtargetFeatures getFeatures() const override;
|
|
Expected<uint64_t> getStartAddress() const override;
|
|
bool isRelocatableObject() const override;
|
|
|
|
// Below here is the non-inherited interface.
|
|
bool is64Bit() const;
|
|
|
|
const XCOFFSymbolEntry *getPointerToSymbolTable() const {
|
|
assert(!is64Bit() && "Symbol table handling not supported yet.");
|
|
return SymbolTblPtr;
|
|
}
|
|
|
|
Expected<StringRef>
|
|
getSymbolSectionName(const XCOFFSymbolEntry *SymEntPtr) const;
|
|
|
|
const XCOFFSymbolEntry *toSymbolEntry(DataRefImpl Ref) const;
|
|
|
|
// File header related interfaces.
|
|
uint16_t getMagic() const;
|
|
uint16_t getNumberOfSections() const;
|
|
int32_t getTimeStamp() const;
|
|
|
|
// Symbol table offset and entry count are handled differently between
|
|
// XCOFF32 and XCOFF64.
|
|
uint32_t getSymbolTableOffset32() const;
|
|
uint64_t getSymbolTableOffset64() const;
|
|
|
|
// Note that this value is signed and might return a negative value. Negative
|
|
// values are reserved for future use.
|
|
int32_t getRawNumberOfSymbolTableEntries32() const;
|
|
|
|
// The sanitized value appropriate to use as an index into the symbol table.
|
|
uint32_t getLogicalNumberOfSymbolTableEntries32() const;
|
|
|
|
uint32_t getNumberOfSymbolTableEntries64() const;
|
|
uint32_t getSymbolIndex(uintptr_t SymEntPtr) const;
|
|
|
|
Expected<StringRef> getCFileName(const XCOFFFileAuxEnt *CFileEntPtr) const;
|
|
uint16_t getOptionalHeaderSize() const;
|
|
uint16_t getFlags() const;
|
|
|
|
// Section header table related interfaces.
|
|
ArrayRef<XCOFFSectionHeader32> sections32() const;
|
|
ArrayRef<XCOFFSectionHeader64> sections64() const;
|
|
|
|
int32_t getSectionFlags(DataRefImpl Sec) const;
|
|
Expected<DataRefImpl> getSectionByNum(int16_t Num) const;
|
|
|
|
void checkSymbolEntryPointer(uintptr_t SymbolEntPtr) const;
|
|
}; // XCOFFObjectFile
|
|
|
|
class XCOFFSymbolRef {
|
|
const DataRefImpl SymEntDataRef;
|
|
const XCOFFObjectFile *const OwningObjectPtr;
|
|
|
|
public:
|
|
XCOFFSymbolRef(DataRefImpl SymEntDataRef,
|
|
const XCOFFObjectFile *OwningObjectPtr)
|
|
: SymEntDataRef(SymEntDataRef), OwningObjectPtr(OwningObjectPtr){};
|
|
|
|
XCOFF::StorageClass getStorageClass() const;
|
|
uint8_t getNumberOfAuxEntries() const;
|
|
const XCOFFCsectAuxEnt32 *getXCOFFCsectAuxEnt32() const;
|
|
uint16_t getType() const;
|
|
int16_t getSectionNumber() const;
|
|
|
|
bool hasCsectAuxEnt() const;
|
|
bool isFunction() const;
|
|
};
|
|
|
|
} // namespace object
|
|
} // namespace llvm
|
|
|
|
#endif // LLVM_OBJECT_XCOFFOBJECTFILE_H
|