1 files changed, 49 insertions, 0 deletions
diff --git a/compiler-rt/lib/orc/resolve.cpp b/compiler-rt/lib/orc/resolve.cpp
new file mode 100644
index 000000000000..3d9b37d14d2a
--- /dev/null
+++ b/compiler-rt/lib/orc/resolve.cpp
@@ -0,0 +1,49 @@
+//===- resolve.cpp --------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a generic "resolver" function compatible with the
+// __orc_rt_reenter function.
+//
+//===----------------------------------------------------------------------===//
+
+#include "executor_symbol_def.h"
+#include "jit_dispatch.h"
+#include "wrapper_function_utils.h"
+
+#include <stdio.h>
+
+#define DEBUG_TYPE "resolve"
+
+using namespace orc_rt;
+
+// Declare function tags for functions in the JIT process.
+ORC_RT_JIT_DISPATCH_TAG(__orc_rt_resolve_tag)
+
+// FIXME: Make this configurable via an alias.
+static void __orc_rt_resolve_fail(void *Caller, const char *ErrMsg) {
+  fprintf(stderr, "error resolving implementation for stub %p: %s\n", Caller,
+          ErrMsg);
+  abort();
+}
+
+extern "C" ORC_RT_HIDDEN void *__orc_rt_resolve(void *Caller) {
+  Expected<ExecutorSymbolDef> Result((ExecutorSymbolDef()));
+  if (auto Err = WrapperFunction<SPSExpected<SPSExecutorSymbolDef>(
+          SPSExecutorAddr)>::call(JITDispatch(&__orc_rt_resolve_tag), Result,
+                                  ExecutorAddr::fromPtr(Caller))) {
+    __orc_rt_resolve_fail(Caller, toString(std::move(Err)).c_str());
+    return nullptr; // Unreachable.
+  }
+
+  if (!Result) {
+    __orc_rt_resolve_fail(Caller, toString(Result.takeError()).c_str());
+    return nullptr; // Unreachable.
+  }
+
+  return Result->getAddress().toPtr<void *>();
+}