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//===-- SparcCallingConv.td - Calling Conventions Sparc ----*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This describes the calling conventions for the Sparc architectures.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Return Value Calling Conventions
//===----------------------------------------------------------------------===//
// Sparc 32-bit C return-value convention.
def RetCC_Sparc32 : CallingConv<[
CCIfType<[i32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
CCIfType<[f32], CCAssignToReg<[F0, F1, F2, F3]>>,
CCIfType<[f64], CCAssignToReg<[D0, D1]>>
]>;
// Sparc 64-bit C return-value convention.
def RetCC_Sparc64 : CallingConv<[
CCIfType<[i32], CCPromoteToType<i64>>,
CCIfType<[i64], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
CCIfType<[f32], CCAssignToReg<[F0, F1, F2, F3]>>,
CCIfType<[f64], CCAssignToReg<[D0, D1]>>
]>;
// Sparc 32-bit C Calling convention.
def CC_Sparc32 : CallingConv<[
//Custom assign SRet to [sp+64].
CCIfSRet<CCCustom<"CC_Sparc_Assign_SRet">>,
// i32 f32 arguments get passed in integer registers if there is space.
CCIfType<[i32, f32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
// f64 arguments are split and passed through registers or through stack.
CCIfType<[f64], CCCustom<"CC_Sparc_Assign_f64">>,
// Alternatively, they are assigned to the stack in 4-byte aligned units.
CCAssignToStack<4, 4>
]>;
// Sparc 64-bit C Calling convention.
def CC_Sparc64 : CallingConv<[
// All integers are promoted to i64 by the caller.
CCIfType<[i32], CCPromoteToType<i64>>,
// Integer arguments get passed in integer registers if there is space.
CCIfType<[i64], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
// FIXME: Floating point arguments.
// Alternatively, they are assigned to the stack in 8-byte aligned units.
CCAssignToStack<8, 8>
]>;
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