79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
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//===--- generic-elf-64bit/dynamic_ffi/ffi.cpp -------------------- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM 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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// Provides a mirror to the parts of the FFI interface that the plugins require.
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//
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// libffi
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// - Copyright (c) 2011, 2014, 2019, 2021, 2022 Anthony Green
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// - Copyright (c) 1996-2003, 2007, 2008 Red Hat, Inc.
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//
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//===----------------------------------------------------------------------===//
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#ifndef DYNAMIC_FFI_FFI_H
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#define DYNAMIC_FFI_FFI_H
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#include <stddef.h>
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#include <stdint.h>
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#define USES_DYNAMIC_FFI
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uint32_t ffi_init();
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typedef struct _ffi_type {
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size_t size;
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unsigned short alignment;
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unsigned short type;
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struct _ffi_type **elements;
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} ffi_type;
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typedef enum {
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FFI_OK = 0,
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FFI_BAD_TYPEDEF,
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FFI_BAD_ABI,
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FFI_BAD_ARGTYPE
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} ffi_status;
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// These are target depenent so we set them manually for each ABI by referencing
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// the FFI source.
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typedef enum ffi_abi {
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#if (defined(_M_X64) || defined(__x86_64__))
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FFI_DEFAULT_ABI = 2, // FFI_UNIX64.
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#elif defined(__aarch64__) || defined(__arm64__) || defined(_M_ARM64)
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FFI_DEFAULT_ABI = 1, // FFI_SYSV.
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#elif defined(__powerpc64__)
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FFI_DEFAULT_ABI = 8, // FFI_LINUX.
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#elif defined(__s390x__)
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FFI_DEFAULT_ABI = 1, // FFI_SYSV.
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#else
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#error "Unknown ABI"
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#endif
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} ffi_cif;
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define FFI_EXTERN extern
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#define FFI_API
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FFI_EXTERN ffi_type ffi_type_void;
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FFI_EXTERN ffi_type ffi_type_pointer;
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FFI_API
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void ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue);
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FFI_API
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ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs,
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ffi_type *rtype, ffi_type **atypes);
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#ifdef __cplusplus
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}
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#endif
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#endif // DYNAMIC_FFI_FFI_H
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