1 //===--- BareMetal.h - Bare Metal Tool and ToolChain ------------*- 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 #ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_BAREMETAL_H
10 #define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_BAREMETAL_H
11 
12 #include "clang/Driver/Tool.h"
13 #include "clang/Driver/ToolChain.h"
14 
15 #include <string>
16 
17 namespace clang {
18 namespace driver {
19 
20 namespace toolchains {
21 
22 class LLVM_LIBRARY_VISIBILITY BareMetal : public ToolChain {
23 public:
24   BareMetal(const Driver &D, const llvm::Triple &Triple,
25             const llvm::opt::ArgList &Args);
26   ~BareMetal() override = default;
27 
28   static bool handlesTarget(const llvm::Triple &Triple);
29 
30   void findMultilibs(const Driver &D, const llvm::Triple &Triple,
31                      const llvm::opt::ArgList &Args);
32 
33 protected:
34   Tool *buildLinker() const override;
35 
36 public:
37   bool useIntegratedAs() const override { return true; }
38   bool isBareMetal() const override { return true; }
39   bool isCrossCompiling() const override { return true; }
40   bool isPICDefault() const override { return false; }
41   bool isPIEDefault(const llvm::opt::ArgList &Args) const override {
42     return false;
43   }
44   bool isPICDefaultForced() const override { return false; }
45   bool SupportsProfiling() const override { return false; }
46 
47   StringRef getOSLibName() const override { return "baremetal"; }
48 
49   RuntimeLibType GetDefaultRuntimeLibType() const override {
50     return ToolChain::RLT_CompilerRT;
51   }
52   CXXStdlibType GetDefaultCXXStdlibType() const override {
53     return ToolChain::CST_Libcxx;
54   }
55 
56   const char *getDefaultLinker() const override { return "ld.lld"; }
57 
58   void
59   AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
60                             llvm::opt::ArgStringList &CC1Args) const override;
61   void
62   addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
63                         llvm::opt::ArgStringList &CC1Args,
64                         Action::OffloadKind DeviceOffloadKind) const override;
65   void AddClangCXXStdlibIncludeArgs(
66       const llvm::opt::ArgList &DriverArgs,
67       llvm::opt::ArgStringList &CC1Args) const override;
68   void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
69                            llvm::opt::ArgStringList &CmdArgs) const override;
70   void AddLinkRuntimeLib(const llvm::opt::ArgList &Args,
71                          llvm::opt::ArgStringList &CmdArgs) const;
72   std::string computeSysRoot() const override;
73 };
74 
75 } // namespace toolchains
76 
77 namespace tools {
78 namespace baremetal {
79 
80 class LLVM_LIBRARY_VISIBILITY Linker : public Tool {
81 public:
82   Linker(const ToolChain &TC) : Tool("baremetal::Linker", "ld.lld", TC) {}
83   bool isLinkJob() const override { return true; }
84   bool hasIntegratedCPP() const override { return false; }
85   void ConstructJob(Compilation &C, const JobAction &JA,
86                     const InputInfo &Output, const InputInfoList &Inputs,
87                     const llvm::opt::ArgList &TCArgs,
88                     const char *LinkingOutput) const override;
89 };
90 
91 } // namespace baremetal
92 } // namespace tools
93 
94 } // namespace driver
95 } // namespace clang
96 
97 #endif
98