Object.h
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/*===-- llvm-c/Object.h - Object Lib C Iface --------------------*- 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 header declares the C interface to libLLVMObject.a, which */
/* implements object file reading and writing. */
/* */
/* Many exotic languages can interoperate with C code but have a harder time */
/* with C++ due to name mangling. So in addition to C, this interface enables */
/* tools written in such languages. */
/* */
/*===----------------------------------------------------------------------===*/
#ifndef LLVM_C_OBJECT_H
#define LLVM_C_OBJECT_H
#include "llvm-c/ExternC.h"
#include "llvm-c/Types.h"
#include "llvm/Config/llvm-config.h"
LLVM_C_EXTERN_C_BEGIN
/**
* @defgroup LLVMCObject Object file reading and writing
* @ingroup LLVMC
*
* @{
*/
// Opaque type wrappers
typedef struct LLVMOpaqueSectionIterator *LLVMSectionIteratorRef;
typedef struct LLVMOpaqueSymbolIterator *LLVMSymbolIteratorRef;
typedef struct LLVMOpaqueRelocationIterator *LLVMRelocationIteratorRef;
typedef enum {
LLVMBinaryTypeArchive, /**< Archive file. */
LLVMBinaryTypeMachOUniversalBinary, /**< Mach-O Universal Binary file. */
LLVMBinaryTypeCOFFImportFile, /**< COFF Import file. */
LLVMBinaryTypeIR, /**< LLVM IR. */
LLVMBinaryTypeWinRes, /**< Windows resource (.res) file. */
LLVMBinaryTypeCOFF, /**< COFF Object file. */
LLVMBinaryTypeELF32L, /**< ELF 32-bit, little endian. */
LLVMBinaryTypeELF32B, /**< ELF 32-bit, big endian. */
LLVMBinaryTypeELF64L, /**< ELF 64-bit, little endian. */
LLVMBinaryTypeELF64B, /**< ELF 64-bit, big endian. */
LLVMBinaryTypeMachO32L, /**< MachO 32-bit, little endian. */
LLVMBinaryTypeMachO32B, /**< MachO 32-bit, big endian. */
LLVMBinaryTypeMachO64L, /**< MachO 64-bit, little endian. */
LLVMBinaryTypeMachO64B, /**< MachO 64-bit, big endian. */
LLVMBinaryTypeWasm, /**< Web Assembly. */
} LLVMBinaryType;
/**
* Create a binary file from the given memory buffer.
*
* The exact type of the binary file will be inferred automatically, and the
* appropriate implementation selected. The context may be NULL except if
* the resulting file is an LLVM IR file.
*
* The memory buffer is not consumed by this function. It is the responsibilty
* of the caller to free it with \c LLVMDisposeMemoryBuffer.
*
* If NULL is returned, the \p ErrorMessage parameter is populated with the
* error's description. It is then the caller's responsibility to free this
* message by calling \c LLVMDisposeMessage.
*
* @see llvm::object::createBinary
*/
LLVMBinaryRef LLVMCreateBinary(LLVMMemoryBufferRef MemBuf,
LLVMContextRef Context,
char **ErrorMessage);
/**
* Dispose of a binary file.
*
* The binary file does not own its backing buffer. It is the responsibilty
* of the caller to free it with \c LLVMDisposeMemoryBuffer.
*/
void LLVMDisposeBinary(LLVMBinaryRef BR);
/**
* Retrieves a copy of the memory buffer associated with this object file.
*
* The returned buffer is merely a shallow copy and does not own the actual
* backing buffer of the binary. Nevertheless, it is the responsibility of the
* caller to free it with \c LLVMDisposeMemoryBuffer.
*
* @see llvm::object::getMemoryBufferRef
*/
LLVMMemoryBufferRef LLVMBinaryCopyMemoryBuffer(LLVMBinaryRef BR);
/**
* Retrieve the specific type of a binary.
*
* @see llvm::object::Binary::getType
*/
LLVMBinaryType LLVMBinaryGetType(LLVMBinaryRef BR);
/*
* For a Mach-O universal binary file, retrieves the object file corresponding
* to the given architecture if it is present as a slice.
*
* If NULL is returned, the \p ErrorMessage parameter is populated with the
* error's description. It is then the caller's responsibility to free this
* message by calling \c LLVMDisposeMessage.
*
* It is the responsiblity of the caller to free the returned object file by
* calling \c LLVMDisposeBinary.
*/
LLVMBinaryRef LLVMMachOUniversalBinaryCopyObjectForArch(LLVMBinaryRef BR,
const char *Arch,
size_t ArchLen,
char **ErrorMessage);
/**
* Retrieve a copy of the section iterator for this object file.
*
* If there are no sections, the result is NULL.
*
* The returned iterator is merely a shallow copy. Nevertheless, it is
* the responsibility of the caller to free it with
* \c LLVMDisposeSectionIterator.
*
* @see llvm::object::sections()
*/
LLVMSectionIteratorRef LLVMObjectFileCopySectionIterator(LLVMBinaryRef BR);
/**
* Returns whether the given section iterator is at the end.
*
* @see llvm::object::section_end
*/
LLVMBool LLVMObjectFileIsSectionIteratorAtEnd(LLVMBinaryRef BR,
LLVMSectionIteratorRef SI);
/**
* Retrieve a copy of the symbol iterator for this object file.
*
* If there are no symbols, the result is NULL.
*
* The returned iterator is merely a shallow copy. Nevertheless, it is
* the responsibility of the caller to free it with
* \c LLVMDisposeSymbolIterator.
*
* @see llvm::object::symbols()
*/
LLVMSymbolIteratorRef LLVMObjectFileCopySymbolIterator(LLVMBinaryRef BR);
/**
* Returns whether the given symbol iterator is at the end.
*
* @see llvm::object::symbol_end
*/
LLVMBool LLVMObjectFileIsSymbolIteratorAtEnd(LLVMBinaryRef BR,
LLVMSymbolIteratorRef SI);
void LLVMDisposeSectionIterator(LLVMSectionIteratorRef SI);
void LLVMMoveToNextSection(LLVMSectionIteratorRef SI);
void LLVMMoveToContainingSection(LLVMSectionIteratorRef Sect,
LLVMSymbolIteratorRef Sym);
// ObjectFile Symbol iterators
void LLVMDisposeSymbolIterator(LLVMSymbolIteratorRef SI);
void LLVMMoveToNextSymbol(LLVMSymbolIteratorRef SI);
// SectionRef accessors
const char *LLVMGetSectionName(LLVMSectionIteratorRef SI);
uint64_t LLVMGetSectionSize(LLVMSectionIteratorRef SI);
const char *LLVMGetSectionContents(LLVMSectionIteratorRef SI);
uint64_t LLVMGetSectionAddress(LLVMSectionIteratorRef SI);
LLVMBool LLVMGetSectionContainsSymbol(LLVMSectionIteratorRef SI,
LLVMSymbolIteratorRef Sym);
// Section Relocation iterators
LLVMRelocationIteratorRef LLVMGetRelocations(LLVMSectionIteratorRef Section);
void LLVMDisposeRelocationIterator(LLVMRelocationIteratorRef RI);
LLVMBool LLVMIsRelocationIteratorAtEnd(LLVMSectionIteratorRef Section,
LLVMRelocationIteratorRef RI);
void LLVMMoveToNextRelocation(LLVMRelocationIteratorRef RI);
// SymbolRef accessors
const char *LLVMGetSymbolName(LLVMSymbolIteratorRef SI);
uint64_t LLVMGetSymbolAddress(LLVMSymbolIteratorRef SI);
uint64_t LLVMGetSymbolSize(LLVMSymbolIteratorRef SI);
// RelocationRef accessors
uint64_t LLVMGetRelocationOffset(LLVMRelocationIteratorRef RI);
LLVMSymbolIteratorRef LLVMGetRelocationSymbol(LLVMRelocationIteratorRef RI);
uint64_t LLVMGetRelocationType(LLVMRelocationIteratorRef RI);
// NOTE: Caller takes ownership of returned string of the two
// following functions.
const char *LLVMGetRelocationTypeName(LLVMRelocationIteratorRef RI);
const char *LLVMGetRelocationValueString(LLVMRelocationIteratorRef RI);
/** Deprecated: Use LLVMBinaryRef instead. */
typedef struct LLVMOpaqueObjectFile *LLVMObjectFileRef;
/** Deprecated: Use LLVMCreateBinary instead. */
LLVMObjectFileRef LLVMCreateObjectFile(LLVMMemoryBufferRef MemBuf);
/** Deprecated: Use LLVMDisposeBinary instead. */
void LLVMDisposeObjectFile(LLVMObjectFileRef ObjectFile);
/** Deprecated: Use LLVMObjectFileCopySectionIterator instead. */
LLVMSectionIteratorRef LLVMGetSections(LLVMObjectFileRef ObjectFile);
/** Deprecated: Use LLVMObjectFileIsSectionIteratorAtEnd instead. */
LLVMBool LLVMIsSectionIteratorAtEnd(LLVMObjectFileRef ObjectFile,
LLVMSectionIteratorRef SI);
/** Deprecated: Use LLVMObjectFileCopySymbolIterator instead. */
LLVMSymbolIteratorRef LLVMGetSymbols(LLVMObjectFileRef ObjectFile);
/** Deprecated: Use LLVMObjectFileIsSymbolIteratorAtEnd instead. */
LLVMBool LLVMIsSymbolIteratorAtEnd(LLVMObjectFileRef ObjectFile,
LLVMSymbolIteratorRef SI);
/**
* @}
*/
LLVM_C_EXTERN_C_END
#endif