1 files changed, 39 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/X86/X86InstrTDX.td b/contrib/llvm-project/llvm/lib/Target/X86/X86InstrTDX.td
new file mode 100644
index 000000000000..8d7cd6082095
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Target/X86/X86InstrTDX.td
@@ -0,0 +1,39 @@
+//===- X86InstrTDX.td - TDX Instruction Set Extension -*- tablegen -*===//
+//
+// 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 describes the instructions that make up the Intel TDX instruction
+// set.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// TDX instructions
+
+// 64-bit only instructions
+let SchedRW = [WriteSystem], Predicates = [In64BitMode] in {
+// SEAMCALL - Call to SEAM VMX-root Operation Module
+def SEAMCALL : I<0x01, MRM_CF, (outs), (ins),
+             "seamcall", []>, PD;
+
+// SEAMRET - Return to Legacy VMX-root Operation
+def SEAMRET : I<0x01, MRM_CD, (outs), (ins),
+             "seamret", []>, PD;
+
+// SEAMOPS - SEAM Operations
+def SEAMOPS : I<0x01, MRM_CE, (outs), (ins),
+             "seamops", []>, PD;
+
+} // SchedRW
+
+// common instructions
+let SchedRW = [WriteSystem] in {
+// TDCALL - Call SEAM Module Functions
+def TDCALL : I<0x01, MRM_CC, (outs), (ins),
+             "tdcall", []>, PD;
+
+} // SchedRW