1 //===--- Minix.cpp - Minix ToolChain Implementations ------------*- 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 #include "Minix.h"
10 #include "CommonArgs.h"
11 #include "clang/Driver/Compilation.h"
12 #include "clang/Driver/Driver.h"
13 #include "clang/Driver/InputInfo.h"
14 #include "clang/Driver/Options.h"
15 #include "llvm/Option/ArgList.h"
16 #include "llvm/Support/VirtualFileSystem.h"
17 
18 using namespace clang::driver;
19 using namespace clang;
20 using namespace llvm::opt;
21 
22 void tools::minix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
23                                            const InputInfo &Output,
24                                            const InputInfoList &Inputs,
25                                            const ArgList &Args,
26                                            const char *LinkingOutput) const {
27   claimNoWarnArgs(Args);
28   ArgStringList CmdArgs;
29 
30   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
31 
32   CmdArgs.push_back("-o");
33   CmdArgs.push_back(Output.getFilename());
34 
35   for (const auto &II : Inputs)
36     CmdArgs.push_back(II.getFilename());
37 
38   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
39   C.addCommand(std::make_unique<Command>(JA, *this,
40                                          ResponseFileSupport::AtFileCurCP(),
41                                          Exec, CmdArgs, Inputs, Output));
42 }
43 
44 void tools::minix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
45                                  const InputInfo &Output,
46                                  const InputInfoList &Inputs,
47                                  const ArgList &Args,
48                                  const char *LinkingOutput) const {
49   const Driver &D = getToolChain().getDriver();
50   ArgStringList CmdArgs;
51 
52   if (Output.isFilename()) {
53     CmdArgs.push_back("-o");
54     CmdArgs.push_back(Output.getFilename());
55   } else {
56     assert(Output.isNothing() && "Invalid output.");
57   }
58 
59   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
60     CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
61     CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
62     CmdArgs.push_back(
63         Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
64     CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
65   }
66 
67   Args.AddAllArgs(CmdArgs,
68                   {options::OPT_L, options::OPT_T_Group, options::OPT_e});
69 
70   AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
71 
72   getToolChain().addProfileRTLibs(Args, CmdArgs);
73 
74   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
75     if (D.CCCIsCXX()) {
76       if (getToolChain().ShouldLinkCXXStdlib(Args))
77         getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
78       CmdArgs.push_back("-lm");
79     }
80   }
81 
82   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
83     if (Args.hasArg(options::OPT_pthread))
84       CmdArgs.push_back("-lpthread");
85     CmdArgs.push_back("-lc");
86     CmdArgs.push_back("-lCompilerRT-Generic");
87     CmdArgs.push_back("-L/usr/pkg/compiler-rt/lib");
88     CmdArgs.push_back(
89         Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
90   }
91 
92   const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
93   C.addCommand(std::make_unique<Command>(JA, *this,
94                                          ResponseFileSupport::AtFileCurCP(),
95                                          Exec, CmdArgs, Inputs, Output));
96 }
97 
98 /// Minix - Minix tool chain which can call as(1) and ld(1) directly.
99 
100 toolchains::Minix::Minix(const Driver &D, const llvm::Triple &Triple,
101                          const ArgList &Args)
102     : Generic_ELF(D, Triple, Args) {
103   getFilePaths().push_back(getDriver().Dir + "/../lib");
104   getFilePaths().push_back("/usr/lib");
105 }
106 
107 Tool *toolchains::Minix::buildAssembler() const {
108   return new tools::minix::Assembler(*this);
109 }
110 
111 Tool *toolchains::Minix::buildLinker() const {
112   return new tools::minix::Linker(*this);
113 }
114