From 0b57cec536236d46e3dba9bd041533462f33dbb7 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Fri, 20 Dec 2019 19:53:05 +0000
Subject: Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo".  That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.
---
 contrib/llvm-project/llvm/lib/Object/Error.cpp | 92 ++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 contrib/llvm-project/llvm/lib/Object/Error.cpp

(limited to 'contrib/llvm-project/llvm/lib/Object/Error.cpp')

diff --git a/contrib/llvm-project/llvm/lib/Object/Error.cpp b/contrib/llvm-project/llvm/lib/Object/Error.cpp
new file mode 100644
index 000000000000..010c5b42dac2
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Object/Error.cpp
@@ -0,0 +1,92 @@
+//===- Error.cpp - system_error extensions for Object -----------*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This defines a new error_category for the Object library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Object/Error.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/ManagedStatic.h"
+
+using namespace llvm;
+using namespace object;
+
+namespace {
+// FIXME: This class is only here to support the transition to llvm::Error. It
+// will be removed once this transition is complete. Clients should prefer to
+// deal with the Error value directly, rather than converting to error_code.
+class _object_error_category : public std::error_category {
+public:
+  const char* name() const noexcept override;
+  std::string message(int ev) const override;
+};
+}
+
+const char *_object_error_category::name() const noexcept {
+  return "llvm.object";
+}
+
+std::string _object_error_category::message(int EV) const {
+  object_error E = static_cast<object_error>(EV);
+  switch (E) {
+  case object_error::arch_not_found:
+    return "No object file for requested architecture";
+  case object_error::invalid_file_type:
+    return "The file was not recognized as a valid object file";
+  case object_error::parse_failed:
+    return "Invalid data was encountered while parsing the file";
+  case object_error::unexpected_eof:
+    return "The end of the file was unexpectedly encountered";
+  case object_error::string_table_non_null_end:
+    return "String table must end with a null terminator";
+  case object_error::invalid_section_index:
+    return "Invalid section index";
+  case object_error::bitcode_section_not_found:
+    return "Bitcode section not found in object file";
+  case object_error::invalid_symbol_index:
+    return "Invalid symbol index";
+  }
+  llvm_unreachable("An enumerator of object_error does not have a message "
+                   "defined.");
+}
+
+void BinaryError::anchor() {}
+char BinaryError::ID = 0;
+char GenericBinaryError::ID = 0;
+
+GenericBinaryError::GenericBinaryError(Twine Msg) : Msg(Msg.str()) {}
+
+GenericBinaryError::GenericBinaryError(Twine Msg, object_error ECOverride)
+    : Msg(Msg.str()) {
+  setErrorCode(make_error_code(ECOverride));
+}
+
+void GenericBinaryError::log(raw_ostream &OS) const {
+  OS << Msg;
+}
+
+static ManagedStatic<_object_error_category> error_category;
+
+const std::error_category &object::object_category() {
+  return *error_category;
+}
+
+llvm::Error llvm::object::isNotObjectErrorInvalidFileType(llvm::Error Err) {
+  return handleErrors(std::move(Err), [](std::unique_ptr<ECError> M) -> Error {
+    // Try to handle 'M'. If successful, return a success value from
+    // the handler.
+    if (M->convertToErrorCode() == object_error::invalid_file_type)
+      return Error::success();
+
+    // We failed to handle 'M' - return it from the handler.
+    // This value will be passed back from catchErrors and
+    // wind up in Err2, where it will be returned from this function.
+    return Error(std::move(M));
+  });
+}
-- 
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