1//===--- MSP430.h - Declare MSP430 target feature support -------*- 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 declares MSP430 TargetInfo objects.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_MSP430_H
14#define LLVM_CLANG_LIB_BASIC_TARGETS_MSP430_H
15
16#include "clang/Basic/TargetInfo.h"
17#include "clang/Basic/TargetOptions.h"
18#include "llvm/Support/Compiler.h"
19#include "llvm/TargetParser/Triple.h"
20
21namespace clang {
22namespace targets {
23
24class LLVM_LIBRARY_VISIBILITY MSP430TargetInfo : public TargetInfo {
25  static const char *const GCCRegNames[];
26
27public:
28  MSP430TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
29      : TargetInfo(Triple) {
30    TLSSupported = false;
31    IntWidth = 16;
32    IntAlign = 16;
33    LongWidth = 32;
34    LongLongWidth = 64;
35    LongAlign = LongLongAlign = 16;
36    FloatWidth = 32;
37    FloatAlign = 16;
38    DoubleWidth = LongDoubleWidth = 64;
39    DoubleAlign = LongDoubleAlign = 16;
40    PointerWidth = 16;
41    PointerAlign = 16;
42    SuitableAlign = 16;
43    SizeType = UnsignedInt;
44    IntMaxType = SignedLongLong;
45    IntPtrType = SignedInt;
46    PtrDiffType = SignedInt;
47    SigAtomicType = SignedLong;
48    resetDataLayout("e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16");
49  }
50  void getTargetDefines(const LangOptions &Opts,
51                        MacroBuilder &Builder) const override;
52
53  ArrayRef<Builtin::Info> getTargetBuiltins() const override {
54    // FIXME: Implement.
55    return std::nullopt;
56  }
57
58  bool allowsLargerPreferedTypeAlignment() const override { return false; }
59
60  bool hasFeature(StringRef Feature) const override {
61    return Feature == "msp430";
62  }
63
64  ArrayRef<const char *> getGCCRegNames() const override;
65
66  ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
67    // Make r0 - r3 be recognized by llc (f.e., in clobber list)
68    static const TargetInfo::GCCRegAlias GCCRegAliases[] = {
69        {{"r0"}, "pc"},
70        {{"r1"}, "sp"},
71        {{"r2"}, "sr"},
72        {{"r3"}, "cg"},
73    };
74    return llvm::ArrayRef(GCCRegAliases);
75  }
76
77  bool validateAsmConstraint(const char *&Name,
78                             TargetInfo::ConstraintInfo &info) const override {
79    // FIXME: implement
80    switch (*Name) {
81    case 'K': // the constant 1
82    case 'L': // constant -1^20 .. 1^19
83    case 'M': // constant 1-4:
84      return true;
85    }
86    // No target constraints for now.
87    return false;
88  }
89
90  std::string_view getClobbers() const override {
91    // FIXME: Is this really right?
92    return "";
93  }
94
95  BuiltinVaListKind getBuiltinVaListKind() const override {
96    // FIXME: implement
97    return TargetInfo::CharPtrBuiltinVaList;
98  }
99};
100
101} // namespace targets
102} // namespace clang
103#endif // LLVM_CLANG_LIB_BASIC_TARGETS_MSP430_H
104