1//===- X86InstrTDX.td - TDX Instruction Set Extension -*- tablegen -*===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file describes the instructions that make up the Intel TDX instruction
10// set.
11//
12//===----------------------------------------------------------------------===//
13
14//===----------------------------------------------------------------------===//
15// TDX instructions
16
17// 64-bit only instructions
18let SchedRW = [WriteSystem], Predicates = [In64BitMode] in {
19// SEAMCALL - Call to SEAM VMX-root Operation Module
20def SEAMCALL : I<0x01, MRM_CF, (outs), (ins),
21             "seamcall", []>, PD;
22
23// SEAMRET - Return to Legacy VMX-root Operation
24def SEAMRET : I<0x01, MRM_CD, (outs), (ins),
25             "seamret", []>, PD;
26
27// SEAMOPS - SEAM Operations
28def SEAMOPS : I<0x01, MRM_CE, (outs), (ins),
29             "seamops", []>, PD;
30
31} // SchedRW
32
33// common instructions
34let SchedRW = [WriteSystem] in {
35// TDCALL - Call SEAM Module Functions
36def TDCALL : I<0x01, MRM_CC, (outs), (ins),
37             "tdcall", []>, PD;
38
39} // SchedRW
40