| //===--- generic-elf-64bit/dynamic_ffi/ffi.cpp -------------------- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Provides a mirror to the parts of the FFI interface that the plugins require. |
| // |
| // libffi |
| // - Copyright (c) 2011, 2014, 2019, 2021, 2022 Anthony Green |
| // - Copyright (c) 1996-2003, 2007, 2008 Red Hat, Inc. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef DYNAMIC_FFI_FFI_H |
| #define DYNAMIC_FFI_FFI_H |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #define USES_DYNAMIC_FFI |
| |
| uint32_t ffi_init(); |
| |
| typedef struct _ffi_type { |
| size_t size; |
| unsigned short alignment; |
| unsigned short type; |
| struct _ffi_type **elements; |
| } ffi_type; |
| |
| typedef enum { |
| FFI_OK = 0, |
| FFI_BAD_TYPEDEF, |
| FFI_BAD_ABI, |
| FFI_BAD_ARGTYPE |
| } ffi_status; |
| |
| // These are target depenent so we set them manually for each ABI by referencing |
| // the FFI source. |
| typedef enum ffi_abi { |
| #if (defined(_M_X64) || defined(__x86_64__)) |
| FFI_DEFAULT_ABI = 2, // FFI_UNIX64. |
| #elif defined(__aarch64__) || defined(__arm64__) || defined(_M_ARM64) |
| FFI_DEFAULT_ABI = 1, // FFI_SYSV. |
| #elif defined(__powerpc64__) |
| FFI_DEFAULT_ABI = 8, // FFI_LINUX. |
| #elif defined(__s390x__) |
| FFI_DEFAULT_ABI = 1, // FFI_SYSV. |
| #else |
| #error "Unknown ABI" |
| #endif |
| } ffi_cif; |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define FFI_EXTERN extern |
| #define FFI_API |
| |
| FFI_EXTERN ffi_type ffi_type_void; |
| FFI_EXTERN ffi_type ffi_type_pointer; |
| |
| FFI_API |
| void ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue); |
| |
| FFI_API |
| ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, |
| ffi_type *rtype, ffi_type **atypes); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif // DYNAMIC_FFI_FFI_H |