rustc: Add support for LLVM memory buffer creation via a wrapper function

1 files changed, 31 insertions, 0 deletions

diff --git a/src/llvmext/RustWrapper.cpp b/src/llvmext/RustWrapper.cpp
new file mode 100644
index 00000000..a604e4c2
--- /dev/null
+++ b/src/llvmext/RustWrapper.cpp
@@ -0,0 +1,31 @@
+//===- RustWrapper.cpp - Rust wrapper for core functions --------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines alternate interfaces to core functions that are more
+// readily callable by Rust's FFI.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/Core.h"
+#include "llvm-c/Object.h"
+#include <cstdlib>
+
+static char *LLVMRustError;
+
+extern "C" LLVMMemoryBufferRef
+LLVMRustCreateMemoryBufferWithContentsOfFile(const char *Path) {
+  LLVMMemoryBufferRef MemBuf = NULL;
+  LLVMCreateMemoryBufferWithContentsOfFile(Path, &MemBuf, &LLVMRustError);
+  return MemBuf;
+}
+
+extern "C" const char *LLVMRustGetLastError(void) {
+  return LLVMRustError;
+}
+