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 | |
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(Size: 8, Alignment: Align(4)); |
34 | State.addLoc( |
35 | V: CCValAssign::getMem(ValNo, ValVT, Offset: StackOffset, LocVT, HTP: LocInfo)); |
36 | return true; |
37 | } |
38 | if (!State.AllocateReg(ArgGPRs)) |
39 | State.AllocateStack(Size: 4, Alignment: Align(4)); |
40 | State.addLoc(V: CCValAssign::getReg(ValNo, ValVT, RegNo: Reg, LocVT, HTP: LocInfo)); |
41 | return true; |
42 | } |
43 | |
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(V: CCValAssign::getReg(ValNo, ValVT, RegNo: Reg, LocVT, HTP: LocInfo)); |
58 | return true; |
59 | } |
60 | |
61 | } // namespace llvm |
62 | |
63 | #endif |
64 | |