1 //===- SparcCallingConv.td - Calling Conventions Sparc -----*- 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 // 10 // This describes the calling conventions for the Sparc architectures. 11 // 12 //===----------------------------------------------------------------------===// 13 14 //===----------------------------------------------------------------------===// 15 // Return Value Calling Conventions 16 //===----------------------------------------------------------------------===// 17 18 // Sparc 32-bit C return-value convention. 19 def RetCC_Sparc32 : CallingConv<[ 20 CCIfType<[i32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>, 21 CCIfType<[f32], CCAssignToReg<[F0, F1, F2, F3]>>, 22 CCIfType<[f64], CCAssignToReg<[D0, D1]>> 23 ]>; 24 25 // Sparc 32-bit C Calling convention. 26 def CC_Sparc32 : CallingConv<[ 27 //Custom assign SRet to [sp+64]. 28 CCIfSRet<CCCustom<"CC_Sparc_Assign_SRet">>, 29 // i32 f32 arguments get passed in integer registers if there is space. 30 CCIfType<[i32, f32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>, 31 // f64 arguments are split and passed through registers or through stack. 32 CCIfType<[f64], CCCustom<"CC_Sparc_Assign_f64">>, 33 34 // Alternatively, they are assigned to the stack in 4-byte aligned units. 35 CCAssignToStack<4, 4> 36 ]>; 37
