1 //===--- VE.cpp - VE 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 "VEToolchain.h" 10 #include "CommonArgs.h" 11 #include "clang/Driver/Compilation.h" 12 #include "clang/Driver/Driver.h" 13 #include "clang/Driver/Options.h" 14 #include "llvm/Option/ArgList.h" 15 #include "llvm/Support/FileSystem.h" 16 #include "llvm/Support/Path.h" 17 #include <cstdlib> // ::getenv 18 19 using namespace clang::driver; 20 using namespace clang::driver::toolchains; 21 using namespace clang; 22 using namespace llvm::opt; 23 24 /// VE tool chain 25 VEToolChain::VEToolChain(const Driver &D, const llvm::Triple &Triple, 26 const ArgList &Args) 27 : Linux(D, Triple, Args) { 28 getProgramPaths().push_back("/opt/nec/ve/bin"); 29 // ProgramPaths are found via 'PATH' environment variable. 30 31 // Default library paths are following: 32 // ${RESOURCEDIR}/lib/ve-unknown-linux-gnu, 33 // These are OK. 34 35 // Default file paths are following: 36 // ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPaths) 37 // /lib/../lib64, 38 // /usr/lib/../lib64, 39 // ${BINPATH}/../lib, 40 // /lib, 41 // /usr/lib, 42 // These are OK for host, but no go for VE. 43 44 // Define file paths from scratch here. 45 getFilePaths().clear(); 46 47 // Add library directories: 48 // ${BINPATH}/../lib/ve-unknown-linux-gnu, (== getStdlibPaths) 49 // ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPaths) 50 // ${SYSROOT}/opt/nec/ve/lib, 51 for (auto &Path : getStdlibPaths()) 52 getFilePaths().push_back(std::move(Path)); 53 for (const auto &Path : getArchSpecificLibPaths()) 54 getFilePaths().push_back(Path); 55 getFilePaths().push_back(computeSysRoot() + "/opt/nec/ve/lib"); 56 } 57 58 Tool *VEToolChain::buildAssembler() const { 59 return new tools::gnutools::Assembler(*this); 60 } 61 62 Tool *VEToolChain::buildLinker() const { 63 return new tools::gnutools::Linker(*this); 64 } 65 66 bool VEToolChain::isPICDefault() const { return false; } 67 68 bool VEToolChain::isPIEDefault(const llvm::opt::ArgList &Args) const { 69 return false; 70 } 71 72 bool VEToolChain::isPICDefaultForced() const { return false; } 73 74 bool VEToolChain::SupportsProfiling() const { return false; } 75 76 bool VEToolChain::hasBlocksRuntime() const { return false; } 77 78 void VEToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 79 ArgStringList &CC1Args) const { 80 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc)) 81 return; 82 83 if (DriverArgs.hasArg(options::OPT_nobuiltininc) && 84 DriverArgs.hasArg(options::OPT_nostdlibinc)) 85 return; 86 87 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 88 SmallString<128> P(getDriver().ResourceDir); 89 llvm::sys::path::append(P, "include"); 90 addSystemInclude(DriverArgs, CC1Args, P); 91 } 92 93 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) { 94 if (const char *cl_include_dir = getenv("NCC_C_INCLUDE_PATH")) { 95 SmallVector<StringRef, 4> Dirs; 96 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'}; 97 StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr)); 98 ArrayRef<StringRef> DirVec(Dirs); 99 addSystemIncludes(DriverArgs, CC1Args, DirVec); 100 } else { 101 addSystemInclude(DriverArgs, CC1Args, 102 getDriver().SysRoot + "/opt/nec/ve/include"); 103 } 104 } 105 } 106 107 void VEToolChain::addClangTargetOptions(const ArgList &DriverArgs, 108 ArgStringList &CC1Args, 109 Action::OffloadKind) const { 110 CC1Args.push_back("-nostdsysteminc"); 111 bool UseInitArrayDefault = true; 112 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 113 options::OPT_fno_use_init_array, UseInitArrayDefault)) 114 CC1Args.push_back("-fno-use-init-array"); 115 } 116 117 void VEToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 118 ArgStringList &CC1Args) const { 119 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc) || 120 DriverArgs.hasArg(options::OPT_nostdlibinc) || 121 DriverArgs.hasArg(options::OPT_nostdincxx)) 122 return; 123 if (const char *cl_include_dir = getenv("NCC_CPLUS_INCLUDE_PATH")) { 124 SmallVector<StringRef, 4> Dirs; 125 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'}; 126 StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr)); 127 ArrayRef<StringRef> DirVec(Dirs); 128 addSystemIncludes(DriverArgs, CC1Args, DirVec); 129 } else { 130 // Add following paths for multiple target installation. 131 // ${INSTALLDIR}/include/ve-unknown-linux-gnu/c++/v1, 132 // ${INSTALLDIR}/include/c++/v1, 133 addLibCxxIncludePaths(DriverArgs, CC1Args); 134 } 135 } 136 137 void VEToolChain::AddCXXStdlibLibArgs(const ArgList &Args, 138 ArgStringList &CmdArgs) const { 139 assert((GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) && 140 "Only -lc++ (aka libxx) is supported in this toolchain."); 141 142 tools::addArchSpecificRPath(*this, Args, CmdArgs); 143 144 CmdArgs.push_back("-lc++"); 145 if (Args.hasArg(options::OPT_fexperimental_library)) 146 CmdArgs.push_back("-lc++experimental"); 147 CmdArgs.push_back("-lc++abi"); 148 CmdArgs.push_back("-lunwind"); 149 // libc++ requires -lpthread under glibc environment 150 CmdArgs.push_back("-lpthread"); 151 // libunwind requires -ldl under glibc environment 152 CmdArgs.push_back("-ldl"); 153 } 154 155 llvm::ExceptionHandling 156 VEToolChain::GetExceptionModel(const ArgList &Args) const { 157 // VE uses SjLj exceptions. 158 return llvm::ExceptionHandling::SjLj; 159 } 160