1//==- MSP430CallingConv.td - Calling Conventions for MSP430 -*- tablegen -*-==// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// This describes the calling conventions for MSP430 architecture. 10//===----------------------------------------------------------------------===// 11 12//===----------------------------------------------------------------------===// 13// MSP430 Return Value Calling Convention 14//===----------------------------------------------------------------------===// 15def RetCC_MSP430 : CallingConv<[ 16 // i8 are returned in registers R12B, R13B, R14B, R15B 17 CCIfType<[i8], CCAssignToReg<[R12B, R13B, R14B, R15B]>>, 18 19 // i16 are returned in registers R12, R13, R14, R15 20 CCIfType<[i16], CCAssignToReg<[R12, R13, R14, R15]>> 21]>; 22 23//===----------------------------------------------------------------------===// 24// MSP430 Argument Calling Conventions 25//===----------------------------------------------------------------------===// 26def CC_MSP430_AssignStack : CallingConv<[ 27 // Pass by value if the byval attribute is given 28 CCIfByVal<CCPassByVal<2, 2>>, 29 30 // Promote i8 arguments to i16. 31 CCIfType<[i8], CCPromoteToType<i16>>, 32 33 // Integer values get stored in stack slots that are 2 bytes in 34 // size and 2-byte aligned. 35 CCIfType<[i16], CCAssignToStack<2, 2>> 36]>; 37 38