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6c02607f00
Summary: Allow for retrieving an object file corresponding to an architecture-specific slice in a Mach-O universal binary file. Reviewers: whitequark, deadalnix Reviewed By: whitequark Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D60378 llvm-svn: 361705
234 lines
9.2 KiB
C++
234 lines
9.2 KiB
C++
/*===-- llvm-c/Object.h - Object Lib C Iface --------------------*- C++ -*-===*/
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/* */
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/* Part of the LLVM Project, under the Apache License v2.0 with LLVM */
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/* Exceptions. */
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/* See https://llvm.org/LICENSE.txt for license information. */
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/* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception */
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/* */
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/*===----------------------------------------------------------------------===*/
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/* */
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/* This header declares the C interface to libLLVMObject.a, which */
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/* implements object file reading and writing. */
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/* */
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/* Many exotic languages can interoperate with C code but have a harder time */
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/* with C++ due to name mangling. So in addition to C, this interface enables */
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/* tools written in such languages. */
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/* */
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/*===----------------------------------------------------------------------===*/
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#ifndef LLVM_C_OBJECT_H
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#define LLVM_C_OBJECT_H
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#include "llvm-c/Types.h"
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#include "llvm/Config/llvm-config.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @defgroup LLVMCObject Object file reading and writing
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* @ingroup LLVMC
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*
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* @{
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*/
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// Opaque type wrappers
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typedef struct LLVMOpaqueSectionIterator *LLVMSectionIteratorRef;
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typedef struct LLVMOpaqueSymbolIterator *LLVMSymbolIteratorRef;
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typedef struct LLVMOpaqueRelocationIterator *LLVMRelocationIteratorRef;
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typedef enum {
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LLVMBinaryTypeArchive, /**< Archive file. */
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LLVMBinaryTypeMachOUniversalBinary, /**< Mach-O Universal Binary file. */
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LLVMBinaryTypeCOFFImportFile, /**< COFF Import file. */
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LLVMBinaryTypeIR, /**< LLVM IR. */
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LLVMBinaryTypeWinRes, /**< Windows resource (.res) file. */
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LLVMBinaryTypeCOFF, /**< COFF Object file. */
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LLVMBinaryTypeELF32L, /**< ELF 32-bit, little endian. */
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LLVMBinaryTypeELF32B, /**< ELF 32-bit, big endian. */
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LLVMBinaryTypeELF64L, /**< ELF 64-bit, little endian. */
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LLVMBinaryTypeELF64B, /**< ELF 64-bit, big endian. */
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LLVMBinaryTypeMachO32L, /**< MachO 32-bit, little endian. */
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LLVMBinaryTypeMachO32B, /**< MachO 32-bit, big endian. */
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LLVMBinaryTypeMachO64L, /**< MachO 64-bit, little endian. */
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LLVMBinaryTypeMachO64B, /**< MachO 64-bit, big endian. */
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LLVMBinaryTypeWasm, /**< Web Assembly. */
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} LLVMBinaryType;
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/**
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* Create a binary file from the given memory buffer.
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*
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* The exact type of the binary file will be inferred automatically, and the
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* appropriate implementation selected. The context may be NULL except if
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* the resulting file is an LLVM IR file.
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*
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* The memory buffer is not consumed by this function. It is the responsibilty
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* of the caller to free it with \c LLVMDisposeMemoryBuffer.
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*
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* If NULL is returned, the \p ErrorMessage parameter is populated with the
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* error's description. It is then the caller's responsibility to free this
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* message by calling \c LLVMDisposeMessage.
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*
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* @see llvm::object::createBinary
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*/
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LLVMBinaryRef LLVMCreateBinary(LLVMMemoryBufferRef MemBuf,
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LLVMContextRef Context,
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char **ErrorMessage);
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/**
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* Dispose of a binary file.
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*
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* The binary file does not own its backing buffer. It is the responsibilty
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* of the caller to free it with \c LLVMDisposeMemoryBuffer.
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*/
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void LLVMDisposeBinary(LLVMBinaryRef BR);
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/**
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* Retrieves a copy of the memory buffer associated with this object file.
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*
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* The returned buffer is merely a shallow copy and does not own the actual
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* backing buffer of the binary. Nevertheless, it is the responsibility of the
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* caller to free it with \c LLVMDisposeMemoryBuffer.
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*
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* @see llvm::object::getMemoryBufferRef
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*/
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LLVMMemoryBufferRef LLVMBinaryCopyMemoryBuffer(LLVMBinaryRef BR);
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/**
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* Retrieve the specific type of a binary.
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*
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* @see llvm::object::Binary::getType
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*/
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LLVMBinaryType LLVMBinaryGetType(LLVMBinaryRef BR);
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/*
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* For a Mach-O universal binary file, retrieves the object file corresponding
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* to the given architecture if it is present as a slice.
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*
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* If NULL is returned, the \p ErrorMessage parameter is populated with the
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* error's description. It is then the caller's responsibility to free this
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* message by calling \c LLVMDisposeMessage.
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*
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* It is the responsiblity of the caller to free the returned object file by
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* calling \c LLVMDisposeBinary.
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*/
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LLVMBinaryRef LLVMMachOUniversalBinaryCopyObjectForArch(LLVMBinaryRef BR,
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const char *Arch,
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size_t ArchLen,
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char **ErrorMessage);
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/**
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* Retrieve a copy of the section iterator for this object file.
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*
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* If there are no sections, the result is NULL.
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*
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* The returned iterator is merely a shallow copy. Nevertheless, it is
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* the responsibility of the caller to free it with
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* \c LLVMDisposeSectionIterator.
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*
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* @see llvm::object::sections()
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*/
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LLVMSectionIteratorRef LLVMObjectFileCopySectionIterator(LLVMBinaryRef BR);
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/**
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* Returns whether the given section iterator is at the end.
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*
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* @see llvm::object::section_end
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*/
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LLVMBool LLVMObjectFileIsSectionIteratorAtEnd(LLVMBinaryRef BR,
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LLVMSectionIteratorRef SI);
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/**
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* Retrieve a copy of the symbol iterator for this object file.
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*
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* If there are no symbols, the result is NULL.
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*
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* The returned iterator is merely a shallow copy. Nevertheless, it is
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* the responsibility of the caller to free it with
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* \c LLVMDisposeSymbolIterator.
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*
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* @see llvm::object::symbols()
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*/
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LLVMSymbolIteratorRef LLVMObjectFileCopySymbolIterator(LLVMBinaryRef BR);
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/**
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* Returns whether the given symbol iterator is at the end.
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*
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* @see llvm::object::symbol_end
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*/
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LLVMBool LLVMObjectFileIsSymbolIteratorAtEnd(LLVMBinaryRef BR,
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LLVMSymbolIteratorRef SI);
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void LLVMDisposeSectionIterator(LLVMSectionIteratorRef SI);
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void LLVMMoveToNextSection(LLVMSectionIteratorRef SI);
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void LLVMMoveToContainingSection(LLVMSectionIteratorRef Sect,
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LLVMSymbolIteratorRef Sym);
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// ObjectFile Symbol iterators
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void LLVMDisposeSymbolIterator(LLVMSymbolIteratorRef SI);
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void LLVMMoveToNextSymbol(LLVMSymbolIteratorRef SI);
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// SectionRef accessors
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const char *LLVMGetSectionName(LLVMSectionIteratorRef SI);
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uint64_t LLVMGetSectionSize(LLVMSectionIteratorRef SI);
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const char *LLVMGetSectionContents(LLVMSectionIteratorRef SI);
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uint64_t LLVMGetSectionAddress(LLVMSectionIteratorRef SI);
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LLVMBool LLVMGetSectionContainsSymbol(LLVMSectionIteratorRef SI,
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LLVMSymbolIteratorRef Sym);
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// Section Relocation iterators
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LLVMRelocationIteratorRef LLVMGetRelocations(LLVMSectionIteratorRef Section);
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void LLVMDisposeRelocationIterator(LLVMRelocationIteratorRef RI);
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LLVMBool LLVMIsRelocationIteratorAtEnd(LLVMSectionIteratorRef Section,
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LLVMRelocationIteratorRef RI);
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void LLVMMoveToNextRelocation(LLVMRelocationIteratorRef RI);
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// SymbolRef accessors
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const char *LLVMGetSymbolName(LLVMSymbolIteratorRef SI);
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uint64_t LLVMGetSymbolAddress(LLVMSymbolIteratorRef SI);
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uint64_t LLVMGetSymbolSize(LLVMSymbolIteratorRef SI);
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// RelocationRef accessors
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uint64_t LLVMGetRelocationOffset(LLVMRelocationIteratorRef RI);
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LLVMSymbolIteratorRef LLVMGetRelocationSymbol(LLVMRelocationIteratorRef RI);
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uint64_t LLVMGetRelocationType(LLVMRelocationIteratorRef RI);
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// NOTE: Caller takes ownership of returned string of the two
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// following functions.
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const char *LLVMGetRelocationTypeName(LLVMRelocationIteratorRef RI);
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const char *LLVMGetRelocationValueString(LLVMRelocationIteratorRef RI);
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/** Deprecated: Use LLVMBinaryRef instead. */
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typedef struct LLVMOpaqueObjectFile *LLVMObjectFileRef;
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/** Deprecated: Use LLVMCreateBinary instead. */
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LLVMObjectFileRef LLVMCreateObjectFile(LLVMMemoryBufferRef MemBuf);
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/** Deprecated: Use LLVMDisposeBinary instead. */
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void LLVMDisposeObjectFile(LLVMObjectFileRef ObjectFile);
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/** Deprecated: Use LLVMObjectFileCopySectionIterator instead. */
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LLVMSectionIteratorRef LLVMGetSections(LLVMObjectFileRef ObjectFile);
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/** Deprecated: Use LLVMObjectFileIsSectionIteratorAtEnd instead. */
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LLVMBool LLVMIsSectionIteratorAtEnd(LLVMObjectFileRef ObjectFile,
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LLVMSectionIteratorRef SI);
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/** Deprecated: Use LLVMObjectFileCopySymbolIterator instead. */
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LLVMSymbolIteratorRef LLVMGetSymbols(LLVMObjectFileRef ObjectFile);
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/** Deprecated: Use LLVMObjectFileIsSymbolIteratorAtEnd instead. */
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LLVMBool LLVMIsSymbolIteratorAtEnd(LLVMObjectFileRef ObjectFile,
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LLVMSymbolIteratorRef SI);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif /* defined(__cplusplus) */
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#endif
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