1 //=== CSKYCallingConv.h - CSKY Custom Calling Convention Routines -*-C++-*-===//
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 //
9 // This file contains the custom routines for the CSKY Calling Convention that
10 // aren't done by tablegen.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef LLVM_LIB_TARGET_CSKY_CSKYCALLINGCONV_H
15 #define LLVM_LIB_TARGET_CSKY_CSKYCALLINGCONV_H
16
17 #include "CSKY.h"
18 #include "CSKYSubtarget.h"
19 #include "llvm/CodeGen/CallingConvLower.h"
20 #include "llvm/CodeGen/TargetInstrInfo.h"
21 #include "llvm/IR/CallingConv.h"
22
23 namespace llvm {
24
CC_CSKY_ABIV2_SOFT_64(unsigned & ValNo,MVT & ValVT,MVT & LocVT,CCValAssign::LocInfo & LocInfo,ISD::ArgFlagsTy & ArgFlags,CCState & State)25 static bool CC_CSKY_ABIV2_SOFT_64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
26 CCValAssign::LocInfo &LocInfo,
27 ISD::ArgFlagsTy &ArgFlags, CCState &State) {
28
29 static const MCPhysReg ArgGPRs[] = {CSKY::R0, CSKY::R1, CSKY::R2, CSKY::R3};
30 Register Reg = State.AllocateReg(ArgGPRs);
31 LocVT = MVT::i32;
32 if (!Reg) {
33 unsigned StackOffset = State.AllocateStack(8, Align(4));
34 State.addLoc(
35 CCValAssign::getMem(ValNo, ValVT, StackOffset, LocVT, LocInfo));
36 return true;
37 }
38 if (!State.AllocateReg(ArgGPRs))
39 State.AllocateStack(4, Align(4));
40 State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
41 return true;
42 }
43
Ret_CSKY_ABIV2_SOFT_64(unsigned & ValNo,MVT & ValVT,MVT & LocVT,CCValAssign::LocInfo & LocInfo,ISD::ArgFlagsTy & ArgFlags,CCState & State)44 static bool Ret_CSKY_ABIV2_SOFT_64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
45 CCValAssign::LocInfo &LocInfo,
46 ISD::ArgFlagsTy &ArgFlags, CCState &State) {
47
48 static const MCPhysReg ArgGPRs[] = {CSKY::R0, CSKY::R1};
49 Register Reg = State.AllocateReg(ArgGPRs);
50 LocVT = MVT::i32;
51 if (!Reg)
52 return false;
53
54 if (!State.AllocateReg(ArgGPRs))
55 return false;
56
57 State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
58 return true;
59 }
60
61 } // namespace llvm
62
63 #endif
64