[Openmp-commits] [openmp] [Libomptarget] Allow the CPU targets to be built without libffi (PR #77495)

[Johannes Doerfert via Openmp-commits]

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@@ -0,0 +1,102 @@
+//===--- 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;
+
+#ifndef X86_64
+#define X86_64
+#endif
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jdoerfert wrote:

This makes sense on aarch64?

https://github.com/llvm/llvm-project/pull/77495