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, (== getArchSpecificLibPath) 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, (== getStdlibPath) 49 // ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPath) 50 // ${SYSROOT}/opt/nec/ve/lib, 51 for (auto &Path : getStdlibPaths()) 52 getFilePaths().push_back(std::move(Path)); 53 getFilePaths().push_back(getArchSpecificLibPath()); 54 getFilePaths().push_back(computeSysRoot() + "/opt/nec/ve/lib"); 55 } 56 57 Tool *VEToolChain::buildAssembler() const { 58 return new tools::gnutools::Assembler(*this); 59 } 60 61 Tool *VEToolChain::buildLinker() const { 62 return new tools::gnutools::Linker(*this); 63 } 64 65 bool VEToolChain::isPICDefault() const { return false; } 66 67 bool VEToolChain::isPIEDefault(const llvm::opt::ArgList &Args) const { 68 return false; 69 } 70 71 bool VEToolChain::isPICDefaultForced() const { return false; } 72 73 bool VEToolChain::SupportsProfiling() const { return false; } 74 75 bool VEToolChain::hasBlocksRuntime() const { return false; } 76 77 void VEToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 78 ArgStringList &CC1Args) const { 79 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc)) 80 return; 81 82 if (DriverArgs.hasArg(options::OPT_nobuiltininc) && 83 DriverArgs.hasArg(options::OPT_nostdlibinc)) 84 return; 85 86 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 87 SmallString<128> P(getDriver().ResourceDir); 88 llvm::sys::path::append(P, "include"); 89 addSystemInclude(DriverArgs, CC1Args, P); 90 } 91 92 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) { 93 if (const char *cl_include_dir = getenv("NCC_C_INCLUDE_PATH")) { 94 SmallVector<StringRef, 4> Dirs; 95 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'}; 96 StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr)); 97 ArrayRef<StringRef> DirVec(Dirs); 98 addSystemIncludes(DriverArgs, CC1Args, DirVec); 99 } else { 100 addSystemInclude(DriverArgs, CC1Args, 101 getDriver().SysRoot + "/opt/nec/ve/include"); 102 } 103 } 104 } 105 106 void VEToolChain::addClangTargetOptions(const ArgList &DriverArgs, 107 ArgStringList &CC1Args, 108 Action::OffloadKind) const { 109 CC1Args.push_back("-nostdsysteminc"); 110 bool UseInitArrayDefault = true; 111 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 112 options::OPT_fno_use_init_array, UseInitArrayDefault)) 113 CC1Args.push_back("-fno-use-init-array"); 114 } 115 116 void VEToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 117 ArgStringList &CC1Args) const { 118 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc) || 119 DriverArgs.hasArg(options::OPT_nostdlibinc) || 120 DriverArgs.hasArg(options::OPT_nostdincxx)) 121 return; 122 if (const char *cl_include_dir = getenv("NCC_CPLUS_INCLUDE_PATH")) { 123 SmallVector<StringRef, 4> Dirs; 124 const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'}; 125 StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr)); 126 ArrayRef<StringRef> DirVec(Dirs); 127 addSystemIncludes(DriverArgs, CC1Args, DirVec); 128 } else { 129 // Add following paths for multiple target installation. 130 // ${INSTALLDIR}/include/ve-unknown-linux-gnu/c++/v1, 131 // ${INSTALLDIR}/include/c++/v1, 132 addLibCxxIncludePaths(DriverArgs, CC1Args); 133 } 134 } 135 136 void VEToolChain::AddCXXStdlibLibArgs(const ArgList &Args, 137 ArgStringList &CmdArgs) const { 138 assert((GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) && 139 "Only -lc++ (aka libxx) is supported in this toolchain."); 140 141 tools::addArchSpecificRPath(*this, Args, CmdArgs); 142 143 CmdArgs.push_back("-lc++"); 144 CmdArgs.push_back("-lc++abi"); 145 CmdArgs.push_back("-lunwind"); 146 // libc++ requires -lpthread under glibc environment 147 CmdArgs.push_back("-lpthread"); 148 // libunwind requires -ldl under glibc environment 149 CmdArgs.push_back("-ldl"); 150 } 151 152 llvm::ExceptionHandling 153 VEToolChain::GetExceptionModel(const ArgList &Args) const { 154 // VE uses SjLj exceptions. 155 return llvm::ExceptionHandling::SjLj; 156 } 157