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