1 files changed, 55 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/CodeGen/Targets/M68k.cpp b/contrib/llvm-project/clang/lib/CodeGen/Targets/M68k.cpp
new file mode 100644
index 000000000000..120022105f34
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/CodeGen/Targets/M68k.cpp
@@ -0,0 +1,55 @@
+//===- M68k.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
+//
+//===----------------------------------------------------------------------===//
+
+#include "ABIInfoImpl.h"
+#include "TargetInfo.h"
+
+using namespace clang;
+using namespace clang::CodeGen;
+
+//===----------------------------------------------------------------------===//
+// M68k ABI Implementation
+//===----------------------------------------------------------------------===//
+
+namespace {
+
+class M68kTargetCodeGenInfo : public TargetCodeGenInfo {
+public:
+  M68kTargetCodeGenInfo(CodeGenTypes &CGT)
+      : TargetCodeGenInfo(std::make_unique<DefaultABIInfo>(CGT)) {}
+  void setTargetAttributes(const Decl *D, llvm::GlobalValue *GV,
+                           CodeGen::CodeGenModule &M) const override;
+};
+
+} // namespace
+
+void M68kTargetCodeGenInfo::setTargetAttributes(
+    const Decl *D, llvm::GlobalValue *GV, CodeGen::CodeGenModule &M) const {
+  if (const auto *FD = dyn_cast_or_null<FunctionDecl>(D)) {
+    if (const auto *attr = FD->getAttr<M68kInterruptAttr>()) {
+      // Handle 'interrupt' attribute:
+      llvm::Function *F = cast<llvm::Function>(GV);
+
+      // Step 1: Set ISR calling convention.
+      F->setCallingConv(llvm::CallingConv::M68k_INTR);
+
+      // Step 2: Add attributes goodness.
+      F->addFnAttr(llvm::Attribute::NoInline);
+
+      // Step 3: Emit ISR vector alias.
+      unsigned Num = attr->getNumber() / 2;
+      llvm::GlobalAlias::create(llvm::Function::ExternalLinkage,
+                                "__isr_" + Twine(Num), F);
+    }
+  }
+}
+
+std::unique_ptr<TargetCodeGenInfo>
+CodeGen::createM68kTargetCodeGenInfo(CodeGenModule &CGM) {
+  return std::make_unique<M68kTargetCodeGenInfo>(CGM.getTypes());
+}