1 //===--- Sparc.cpp - Tools Implementations ----------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Sparc.h"
11 #include "clang/Driver/Driver.h"
12 #include "clang/Driver/DriverDiagnostic.h"
13 #include "clang/Driver/Options.h"
14 #include "llvm/ADT/StringSwitch.h"
15 #include "llvm/Option/ArgList.h"
16 
17 using namespace clang::driver;
18 using namespace clang::driver::tools;
19 using namespace clang;
20 using namespace llvm::opt;
21 
22 const char *sparc::getSparcAsmModeForCPU(StringRef Name,
23                                          const llvm::Triple &Triple) {
24   if (Triple.getArch() == llvm::Triple::sparcv9) {
25     return llvm::StringSwitch<const char *>(Name)
26         .Case("niagara", "-Av9b")
27         .Case("niagara2", "-Av9b")
28         .Case("niagara3", "-Av9d")
29         .Case("niagara4", "-Av9d")
30         .Default("-Av9");
31   } else {
32     return llvm::StringSwitch<const char *>(Name)
33         .Case("v8", "-Av8")
34         .Case("supersparc", "-Av8")
35         .Case("sparclite", "-Asparclite")
36         .Case("f934", "-Asparclite")
37         .Case("hypersparc", "-Av8")
38         .Case("sparclite86x", "-Asparclite")
39         .Case("sparclet", "-Asparclet")
40         .Case("tsc701", "-Asparclet")
41         .Case("v9", "-Av8plus")
42         .Case("ultrasparc", "-Av8plus")
43         .Case("ultrasparc3", "-Av8plus")
44         .Case("niagara", "-Av8plusb")
45         .Case("niagara2", "-Av8plusb")
46         .Case("niagara3", "-Av8plusd")
47         .Case("niagara4", "-Av8plusd")
48         .Case("leon2", "-Av8")
49         .Case("at697e", "-Av8")
50         .Case("at697f", "-Av8")
51         .Case("leon3", "-Av8")
52         .Case("ut699", "-Av8")
53         .Case("gr712rc", "-Av8")
54         .Case("leon4", "-Av8")
55         .Case("gr740", "-Av8")
56         .Default("-Av8");
57   }
58 }
59 
60 sparc::FloatABI sparc::getSparcFloatABI(const Driver &D,
61                                         const ArgList &Args) {
62   sparc::FloatABI ABI = sparc::FloatABI::Invalid;
63   if (Arg *A = Args.getLastArg(clang::driver::options::OPT_msoft_float,
64                                options::OPT_mhard_float,
65                                options::OPT_mfloat_abi_EQ)) {
66     if (A->getOption().matches(clang::driver::options::OPT_msoft_float))
67       ABI = sparc::FloatABI::Soft;
68     else if (A->getOption().matches(options::OPT_mhard_float))
69       ABI = sparc::FloatABI::Hard;
70     else {
71       ABI = llvm::StringSwitch<sparc::FloatABI>(A->getValue())
72                 .Case("soft", sparc::FloatABI::Soft)
73                 .Case("hard", sparc::FloatABI::Hard)
74                 .Default(sparc::FloatABI::Invalid);
75       if (ABI == sparc::FloatABI::Invalid &&
76           !StringRef(A->getValue()).empty()) {
77         D.Diag(clang::diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
78         ABI = sparc::FloatABI::Hard;
79       }
80     }
81   }
82 
83   // If unspecified, choose the default based on the platform.
84   // Only the hard-float ABI on Sparc is standardized, and it is the
85   // default. GCC also supports a nonstandard soft-float ABI mode, also
86   // implemented in LLVM. However as this is not standard we set the default
87   // to be hard-float.
88   if (ABI == sparc::FloatABI::Invalid) {
89     ABI = sparc::FloatABI::Hard;
90   }
91 
92   return ABI;
93 }
94 
95 void sparc::getSparcTargetFeatures(const Driver &D, const ArgList &Args,
96                                    std::vector<StringRef> &Features) {
97   sparc::FloatABI FloatABI = sparc::getSparcFloatABI(D, Args);
98   if (FloatABI == sparc::FloatABI::Soft)
99     Features.push_back("+soft-float");
100 }
101