1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 // Assembler to produce RV32 instructions (no ABI version). Somewhat influenced by V8 assembler.
18 
19 #ifndef BERBERIS_ASSEMBLER_RV32_H_
20 #define BERBERIS_ASSEMBLER_RV32_H_
21 
22 #include <type_traits>  // std::is_same
23 
24 #include "berberis/assembler/riscv.h"
25 
26 namespace berberis::rv32 {
27 
28 class Assembler : public riscv::Assembler<Assembler> {
29  public:
30   using BaseAssembler = riscv::Assembler<Assembler>;
31   using FinalAssembler = Assembler;
32 
Assembler(MachineCode * code)33   explicit Assembler(MachineCode* code) : BaseAssembler(code) {}
34 
35   using ShiftImmediate = BaseAssembler::Shift32Immediate;
36 
37   // Don't use templates here to enable implicit conversions.
38 #define BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(IntType)                                \
39   static constexpr std::optional<ShiftImmediate> MakeShiftImmediate(IntType value) { \
40     return BaseAssembler::MakeShift32Immediate(value);                               \
41   }
42   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(int8_t)
43   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(uint8_t)
44   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(int16_t)
45   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(uint16_t)
46   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(int32_t)
47   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(uint32_t)
48   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(int64_t)
49   BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE(uint64_t)
50 #undef BERBERIS_DEFINE_MAKE_SHIFT_IMMEDIATE
51 
52   friend BaseAssembler;
53 
54 // Instructions.
55 #include "berberis/assembler/gen_assembler_rv32-inl.h"  // NOLINT generated file!
56 
57  private:
58   Assembler() = delete;
59   Assembler(const Assembler&) = delete;
60   Assembler(Assembler&&) = delete;
61   void operator=(const Assembler&) = delete;
62   void operator=(Assembler&&) = delete;
63   friend BaseAssembler;
64 };
65 
66 }  // namespace berberis::rv32
67 
68 #endif  // BERBERIS_ASSEMBLER_RV32_H_
69