1//===- XCoreCallingConv.td - Calling Conventions for XCore -*- 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// This describes the calling conventions for XCore architecture. 9//===----------------------------------------------------------------------===// 10 11//===----------------------------------------------------------------------===// 12// XCore Return Value Calling Convention 13//===----------------------------------------------------------------------===// 14def RetCC_XCore : CallingConv<[ 15 // i32 are returned in registers R0, R1, R2, R3 16 CCIfType<[i32], CCAssignToReg<[R0, R1, R2, R3]>>, 17 18 // Integer values get stored in stack slots that are 4 bytes in 19 // size and 4-byte aligned. 20 CCIfType<[i32], CCAssignToStack<4, 4>> 21]>; 22 23//===----------------------------------------------------------------------===// 24// XCore Argument Calling Conventions 25//===----------------------------------------------------------------------===// 26def CC_XCore : CallingConv<[ 27 // Promote i8/i16 arguments to i32. 28 CCIfType<[i8, i16], CCPromoteToType<i32>>, 29 30 // The 'nest' parameter, if any, is passed in R11. 31 CCIfNest<CCAssignToReg<[R11]>>, 32 33 // The first 4 integer arguments are passed in integer registers. 34 CCIfType<[i32], CCAssignToReg<[R0, R1, R2, R3]>>, 35 36 // Integer values get stored in stack slots that are 4 bytes in 37 // size and 4-byte aligned. 38 CCIfType<[i32], CCAssignToStack<4, 4>> 39]>; 40