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//===-- BPFCallingConv.td - Calling Conventions BPF --------*- 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 BPF architecture.
//
//===----------------------------------------------------------------------===//
// BPF 64-bit C return-value convention.
def RetCC_BPF64 : CallingConv<[CCIfType<[i64], CCAssignToReg<[R0]>>]>;
// BPF 64-bit C Calling convention.
def CC_BPF64 : CallingConv<[
// Promote i8/i16/i32 args to i64
CCIfType<[ i8, i16, i32 ], CCPromoteToType<i64>>,
// All arguments get passed in integer registers if there is space.
CCIfType<[i64], CCAssignToReg<[ R1, R2, R3, R4, R5 ]>>,
// Could be assigned to the stack in 8-byte aligned units, but unsupported
CCAssignToStack<8, 8>
]>;
def CSR : CalleeSavedRegs<(add R6, R7, R8, R9, R10)>;
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