140 lines · cpp
1//===-- MipsLinux.cpp - Mips 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-exception6//7//===----------------------------------------------------------------------===//8 9#include "MipsLinux.h"10#include "Arch/Mips.h"11#include "clang/Driver/Driver.h"12#include "clang/Options/Options.h"13#include "llvm/Option/ArgList.h"14#include "llvm/Support/FileSystem.h"15#include "llvm/Support/Path.h"16 17using namespace clang::driver;18using namespace clang::driver::toolchains;19using namespace clang;20using namespace llvm::opt;21 22/// Mips Toolchain23MipsLLVMToolChain::MipsLLVMToolChain(const Driver &D,24 const llvm::Triple &Triple,25 const ArgList &Args)26 : Linux(D, Triple, Args) {27 // Select the correct multilib according to the given arguments.28 DetectedMultilibs Result;29 findMIPSMultilibs(D, Triple, "", Args, Result);30 Multilibs = Result.Multilibs;31 SelectedMultilibs = Result.SelectedMultilibs;32 33 // Find out the library suffix based on the ABI.34 LibSuffix = tools::mips::getMipsABILibSuffix(Args, Triple);35 getFilePaths().clear();36 getFilePaths().push_back(computeSysRoot() + "/usr/lib" + LibSuffix);37}38 39void MipsLLVMToolChain::AddClangSystemIncludeArgs(40 const ArgList &DriverArgs, ArgStringList &CC1Args) const {41 if (DriverArgs.hasArg(options::OPT_nostdinc))42 return;43 44 const Driver &D = getDriver();45 46 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {47 SmallString<128> P(D.ResourceDir);48 llvm::sys::path::append(P, "include");49 addSystemInclude(DriverArgs, CC1Args, P);50 }51 52 if (DriverArgs.hasArg(options::OPT_nostdlibinc))53 return;54 55 const auto &Callback = Multilibs.includeDirsCallback();56 if (Callback) {57 for (const auto &Path : Callback(SelectedMultilibs.back()))58 addExternCSystemIncludeIfExists(DriverArgs, CC1Args, D.Dir + Path);59 }60}61 62Tool *MipsLLVMToolChain::buildLinker() const {63 return new tools::gnutools::Linker(*this);64}65 66std::string MipsLLVMToolChain::computeSysRoot() const {67 if (!getDriver().SysRoot.empty())68 return getDriver().SysRoot + SelectedMultilibs.back().osSuffix();69 70 const std::string InstalledDir(getDriver().Dir);71 std::string SysRootPath =72 InstalledDir + "/../sysroot" + SelectedMultilibs.back().osSuffix();73 if (llvm::sys::fs::exists(SysRootPath))74 return SysRootPath;75 76 return std::string();77}78 79ToolChain::CXXStdlibType80MipsLLVMToolChain::GetCXXStdlibType(const ArgList &Args) const {81 Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);82 if (A) {83 StringRef Value = A->getValue();84 if (Value != "libc++")85 getDriver().Diag(clang::diag::err_drv_invalid_stdlib_name)86 << A->getAsString(Args);87 }88 89 return ToolChain::CST_Libcxx;90}91 92void MipsLLVMToolChain::addLibCxxIncludePaths(93 const llvm::opt::ArgList &DriverArgs,94 llvm::opt::ArgStringList &CC1Args) const {95 if (const auto &Callback = Multilibs.includeDirsCallback()) {96 for (std::string Path : Callback(SelectedMultilibs.back())) {97 Path = getDriver().Dir + Path + "/c++/v1";98 if (llvm::sys::fs::exists(Path)) {99 addSystemInclude(DriverArgs, CC1Args, Path);100 return;101 }102 }103 }104}105 106void MipsLLVMToolChain::AddCXXStdlibLibArgs(const ArgList &Args,107 ArgStringList &CmdArgs) const {108 assert((GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) &&109 "Only -lc++ (aka libxx) is supported in this toolchain.");110 111 CmdArgs.push_back("-lc++");112 if (Args.hasArg(options::OPT_fexperimental_library))113 CmdArgs.push_back("-lc++experimental");114 CmdArgs.push_back("-lc++abi");115 CmdArgs.push_back("-lunwind");116}117 118std::string MipsLLVMToolChain::getCompilerRT(const ArgList &Args,119 StringRef Component, FileType Type,120 bool IsFortran) const {121 SmallString<128> Path(getDriver().ResourceDir);122 llvm::sys::path::append(Path, SelectedMultilibs.back().osSuffix(), "lib" + LibSuffix,123 getOS());124 const char *Suffix;125 switch (Type) {126 case ToolChain::FT_Object:127 Suffix = ".o";128 break;129 case ToolChain::FT_Static:130 Suffix = ".a";131 break;132 case ToolChain::FT_Shared:133 Suffix = ".so";134 break;135 }136 llvm::sys::path::append(137 Path, Twine("libclang_rt." + Component + "-" + "mips" + Suffix));138 return std::string(Path);139}140