1 //===--- Sparc.h - declare sparc 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 Sparc TargetInfo objects.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_SPARC_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_SPARC_H
15 #include "clang/Basic/TargetInfo.h"
16 #include "clang/Basic/TargetOptions.h"
17 #include "llvm/ADT/Triple.h"
18 #include "llvm/Support/Compiler.h"
19 namespace clang {
20 namespace targets {
21 // Shared base class for SPARC v8 (32-bit) and SPARC v9 (64-bit).
22 class LLVM_LIBRARY_VISIBILITY SparcTargetInfo : public TargetInfo {
23   static const TargetInfo::GCCRegAlias GCCRegAliases[];
24   static const char *const GCCRegNames[];
25   bool SoftFloat;
26 
27 public:
SparcTargetInfo(const llvm::Triple & Triple,const TargetOptions &)28   SparcTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
29       : TargetInfo(Triple), SoftFloat(false) {}
30 
getEHDataRegisterNumber(unsigned RegNo)31   int getEHDataRegisterNumber(unsigned RegNo) const override {
32     if (RegNo == 0)
33       return 24;
34     if (RegNo == 1)
35       return 25;
36     return -1;
37   }
38 
handleTargetFeatures(std::vector<std::string> & Features,DiagnosticsEngine & Diags)39   bool handleTargetFeatures(std::vector<std::string> &Features,
40                             DiagnosticsEngine &Diags) override {
41     // Check if software floating point is enabled
42     auto Feature = llvm::find(Features, "+soft-float");
43     if (Feature != Features.end()) {
44       SoftFloat = true;
45     }
46     return true;
47   }
48   void getTargetDefines(const LangOptions &Opts,
49                         MacroBuilder &Builder) const override;
50 
51   bool hasFeature(StringRef Feature) const override;
52 
hasSjLjLowering()53   bool hasSjLjLowering() const override { return true; }
54 
getTargetBuiltins()55   ArrayRef<Builtin::Info> getTargetBuiltins() const override {
56     // FIXME: Implement!
57     return None;
58   }
getBuiltinVaListKind()59   BuiltinVaListKind getBuiltinVaListKind() const override {
60     return TargetInfo::VoidPtrBuiltinVaList;
61   }
62   ArrayRef<const char *> getGCCRegNames() const override;
63   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
validateAsmConstraint(const char * & Name,TargetInfo::ConstraintInfo & info)64   bool validateAsmConstraint(const char *&Name,
65                              TargetInfo::ConstraintInfo &info) const override {
66     // FIXME: Implement!
67     switch (*Name) {
68     case 'I': // Signed 13-bit constant
69     case 'J': // Zero
70     case 'K': // 32-bit constant with the low 12 bits clear
71     case 'L': // A constant in the range supported by movcc (11-bit signed imm)
72     case 'M': // A constant in the range supported by movrcc (19-bit signed imm)
73     case 'N': // Same as 'K' but zext (required for SIMode)
74     case 'O': // The constant 4096
75       return true;
76 
77     case 'f':
78     case 'e':
79       info.setAllowsRegister();
80       return true;
81     }
82     return false;
83   }
getClobbers()84   const char *getClobbers() const override {
85     // FIXME: Implement!
86     return "";
87   }
88 
89   // No Sparc V7 for now, the backend doesn't support it anyway.
90   enum CPUKind {
91     CK_GENERIC,
92     CK_V8,
93     CK_SUPERSPARC,
94     CK_SPARCLITE,
95     CK_F934,
96     CK_HYPERSPARC,
97     CK_SPARCLITE86X,
98     CK_SPARCLET,
99     CK_TSC701,
100     CK_V9,
101     CK_ULTRASPARC,
102     CK_ULTRASPARC3,
103     CK_NIAGARA,
104     CK_NIAGARA2,
105     CK_NIAGARA3,
106     CK_NIAGARA4,
107     CK_MYRIAD2100,
108     CK_MYRIAD2150,
109     CK_MYRIAD2155,
110     CK_MYRIAD2450,
111     CK_MYRIAD2455,
112     CK_MYRIAD2x5x,
113     CK_MYRIAD2080,
114     CK_MYRIAD2085,
115     CK_MYRIAD2480,
116     CK_MYRIAD2485,
117     CK_MYRIAD2x8x,
118     CK_LEON2,
119     CK_LEON2_AT697E,
120     CK_LEON2_AT697F,
121     CK_LEON3,
122     CK_LEON3_UT699,
123     CK_LEON3_GR712RC,
124     CK_LEON4,
125     CK_LEON4_GR740
126   } CPU = CK_GENERIC;
127 
128   enum CPUGeneration {
129     CG_V8,
130     CG_V9,
131   };
132 
133   CPUGeneration getCPUGeneration(CPUKind Kind) const;
134 
135   CPUKind getCPUKind(StringRef Name) const;
136 
isValidCPUName(StringRef Name)137   bool isValidCPUName(StringRef Name) const override {
138     return getCPUKind(Name) != CK_GENERIC;
139   }
140 
141   void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
142 
setCPU(const std::string & Name)143   bool setCPU(const std::string &Name) override {
144     CPU = getCPUKind(Name);
145     return CPU != CK_GENERIC;
146   }
147 };
148 
149 // SPARC v8 is the 32-bit mode selected by Triple::sparc.
150 class LLVM_LIBRARY_VISIBILITY SparcV8TargetInfo : public SparcTargetInfo {
151 public:
SparcV8TargetInfo(const llvm::Triple & Triple,const TargetOptions & Opts)152   SparcV8TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
153       : SparcTargetInfo(Triple, Opts) {
154     resetDataLayout("E-m:e-p:32:32-i64:64-f128:64-n32-S64");
155     // NetBSD / OpenBSD use long (same as llvm default); everyone else uses int.
156     switch (getTriple().getOS()) {
157     default:
158       SizeType = UnsignedInt;
159       IntPtrType = SignedInt;
160       PtrDiffType = SignedInt;
161       break;
162     case llvm::Triple::NetBSD:
163     case llvm::Triple::OpenBSD:
164       SizeType = UnsignedLong;
165       IntPtrType = SignedLong;
166       PtrDiffType = SignedLong;
167       break;
168     }
169     // Up to 32 bits (V8) or 64 bits (V9) are lock-free atomic, but we're
170     // willing to do atomic ops on up to 64 bits.
171     MaxAtomicPromoteWidth = 64;
172     if (getCPUGeneration(CPU) == CG_V9)
173       MaxAtomicInlineWidth = 64;
174     else
175       // FIXME: This isn't correct for plain V8 which lacks CAS,
176       // only for LEON 3+ and Myriad.
177       MaxAtomicInlineWidth = 32;
178   }
179 
180   void getTargetDefines(const LangOptions &Opts,
181                         MacroBuilder &Builder) const override;
182 
hasSjLjLowering()183   bool hasSjLjLowering() const override { return true; }
hasExtIntType()184   bool hasExtIntType() const override { return true; }
185 };
186 
187 // SPARCV8el is the 32-bit little-endian mode selected by Triple::sparcel.
188 class LLVM_LIBRARY_VISIBILITY SparcV8elTargetInfo : public SparcV8TargetInfo {
189 public:
SparcV8elTargetInfo(const llvm::Triple & Triple,const TargetOptions & Opts)190   SparcV8elTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
191       : SparcV8TargetInfo(Triple, Opts) {
192     resetDataLayout("e-m:e-p:32:32-i64:64-f128:64-n32-S64");
193   }
194 };
195 
196 // SPARC v9 is the 64-bit mode selected by Triple::sparcv9.
197 class LLVM_LIBRARY_VISIBILITY SparcV9TargetInfo : public SparcTargetInfo {
198 public:
SparcV9TargetInfo(const llvm::Triple & Triple,const TargetOptions & Opts)199   SparcV9TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
200       : SparcTargetInfo(Triple, Opts) {
201     // FIXME: Support Sparc quad-precision long double?
202     resetDataLayout("E-m:e-i64:64-n32:64-S128");
203     // This is an LP64 platform.
204     LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
205 
206     // OpenBSD uses long long for int64_t and intmax_t.
207     if (getTriple().isOSOpenBSD())
208       IntMaxType = SignedLongLong;
209     else
210       IntMaxType = SignedLong;
211     Int64Type = IntMaxType;
212 
213     // The SPARCv8 System V ABI has long double 128-bits in size, but 64-bit
214     // aligned. The SPARCv9 SCD 2.4.1 says 16-byte aligned.
215     LongDoubleWidth = 128;
216     LongDoubleAlign = 128;
217     SuitableAlign = 128;
218     LongDoubleFormat = &llvm::APFloat::IEEEquad();
219     MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
220   }
221 
222   void getTargetDefines(const LangOptions &Opts,
223                         MacroBuilder &Builder) const override;
224 
isValidCPUName(StringRef Name)225   bool isValidCPUName(StringRef Name) const override {
226     return getCPUGeneration(SparcTargetInfo::getCPUKind(Name)) == CG_V9;
227   }
228 
229   void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
230 
setCPU(const std::string & Name)231   bool setCPU(const std::string &Name) override {
232     if (!SparcTargetInfo::setCPU(Name))
233       return false;
234     return getCPUGeneration(CPU) == CG_V9;
235   }
236 
hasExtIntType()237   bool hasExtIntType() const override { return true; }
238 };
239 } // namespace targets
240 } // namespace clang
241 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_SPARC_H
242