| //===--- ToolChain.cpp - Collections of tools for one platform ------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Driver/ToolChain.h" |
| |
| #include "clang/Driver/Action.h" |
| #include "clang/Driver/Arg.h" |
| #include "clang/Driver/ArgList.h" |
| #include "clang/Driver/Driver.h" |
| #include "clang/Driver/DriverDiagnostic.h" |
| #include "clang/Driver/ObjCRuntime.h" |
| #include "clang/Driver/Options.h" |
| #include "llvm/Support/ErrorHandling.h" |
| using namespace clang::driver; |
| using namespace clang; |
| |
| ToolChain::ToolChain(const Driver &D, const llvm::Triple &T) |
| : D(D), Triple(T) { |
| } |
| |
| ToolChain::~ToolChain() { |
| } |
| |
| const Driver &ToolChain::getDriver() const { |
| return D; |
| } |
| |
| std::string ToolChain::GetFilePath(const char *Name) const { |
| return D.GetFilePath(Name, *this); |
| |
| } |
| |
| std::string ToolChain::GetProgramPath(const char *Name, bool WantFile) const { |
| return D.GetProgramPath(Name, *this, WantFile); |
| } |
| |
| types::ID ToolChain::LookupTypeForExtension(const char *Ext) const { |
| return types::lookupTypeForExtension(Ext); |
| } |
| |
| bool ToolChain::HasNativeLLVMSupport() const { |
| return false; |
| } |
| |
| void ToolChain::configureObjCRuntime(ObjCRuntime &runtime) const { |
| switch (runtime.getKind()) { |
| case ObjCRuntime::NeXT: |
| // Assume a minimal NeXT runtime. |
| runtime.HasARC = false; |
| runtime.HasWeak = false; |
| runtime.HasTerminate = false; |
| return; |
| |
| case ObjCRuntime::GNU: |
| // Assume a maximal GNU runtime. |
| runtime.HasARC = true; |
| runtime.HasWeak = true; |
| runtime.HasTerminate = false; // to be added |
| return; |
| } |
| llvm_unreachable("invalid runtime kind!"); |
| } |
| |
| /// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting. |
| // |
| // FIXME: tblgen this. |
| static const char *getARMTargetCPU(const ArgList &Args, |
| const llvm::Triple &Triple) { |
| // FIXME: Warn on inconsistent use of -mcpu and -march. |
| |
| // If we have -mcpu=, use that. |
| if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) |
| return A->getValue(Args); |
| |
| StringRef MArch; |
| if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) { |
| // Otherwise, if we have -march= choose the base CPU for that arch. |
| MArch = A->getValue(Args); |
| } else { |
| // Otherwise, use the Arch from the triple. |
| MArch = Triple.getArchName(); |
| } |
| |
| if (MArch == "armv2" || MArch == "armv2a") |
| return "arm2"; |
| if (MArch == "armv3") |
| return "arm6"; |
| if (MArch == "armv3m") |
| return "arm7m"; |
| if (MArch == "armv4" || MArch == "armv4t") |
| return "arm7tdmi"; |
| if (MArch == "armv5" || MArch == "armv5t") |
| return "arm10tdmi"; |
| if (MArch == "armv5e" || MArch == "armv5te") |
| return "arm1026ejs"; |
| if (MArch == "armv5tej") |
| return "arm926ej-s"; |
| if (MArch == "armv6" || MArch == "armv6k") |
| return "arm1136jf-s"; |
| if (MArch == "armv6j") |
| return "arm1136j-s"; |
| if (MArch == "armv6z" || MArch == "armv6zk") |
| return "arm1176jzf-s"; |
| if (MArch == "armv6t2") |
| return "arm1156t2-s"; |
| if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a") |
| return "cortex-a8"; |
| if (MArch == "armv7r" || MArch == "armv7-r") |
| return "cortex-r4"; |
| if (MArch == "armv7m" || MArch == "armv7-m") |
| return "cortex-m3"; |
| if (MArch == "ep9312") |
| return "ep9312"; |
| if (MArch == "iwmmxt") |
| return "iwmmxt"; |
| if (MArch == "xscale") |
| return "xscale"; |
| if (MArch == "armv6m" || MArch == "armv6-m") |
| return "cortex-m0"; |
| |
| // If all else failed, return the most base CPU LLVM supports. |
| return "arm7tdmi"; |
| } |
| |
| /// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular |
| /// CPU. |
| // |
| // FIXME: This is redundant with -mcpu, why does LLVM use this. |
| // FIXME: tblgen this, or kill it! |
| static const char *getLLVMArchSuffixForARM(StringRef CPU) { |
| if (CPU == "arm7tdmi" || CPU == "arm7tdmi-s" || CPU == "arm710t" || |
| CPU == "arm720t" || CPU == "arm9" || CPU == "arm9tdmi" || |
| CPU == "arm920" || CPU == "arm920t" || CPU == "arm922t" || |
| CPU == "arm940t" || CPU == "ep9312") |
| return "v4t"; |
| |
| if (CPU == "arm10tdmi" || CPU == "arm1020t") |
| return "v5"; |
| |
| if (CPU == "arm9e" || CPU == "arm926ej-s" || CPU == "arm946e-s" || |
| CPU == "arm966e-s" || CPU == "arm968e-s" || CPU == "arm10e" || |
| CPU == "arm1020e" || CPU == "arm1022e" || CPU == "xscale" || |
| CPU == "iwmmxt") |
| return "v5e"; |
| |
| if (CPU == "arm1136j-s" || CPU == "arm1136jf-s" || CPU == "arm1176jz-s" || |
| CPU == "arm1176jzf-s" || CPU == "mpcorenovfp" || CPU == "mpcore") |
| return "v6"; |
| |
| if (CPU == "arm1156t2-s" || CPU == "arm1156t2f-s") |
| return "v6t2"; |
| |
| if (CPU == "cortex-a8" || CPU == "cortex-a9") |
| return "v7"; |
| |
| if (CPU == "cortex-m3") |
| return "v7m"; |
| |
| if (CPU == "cortex-m0") |
| return "v6m"; |
| |
| return ""; |
| } |
| |
| std::string ToolChain::ComputeLLVMTriple(const ArgList &Args, |
| types::ID InputType) const { |
| switch (getTriple().getArch()) { |
| default: |
| return getTripleString(); |
| |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: { |
| // FIXME: Factor into subclasses. |
| llvm::Triple Triple = getTriple(); |
| |
| // Thumb2 is the default for V7 on Darwin. |
| // |
| // FIXME: Thumb should just be another -target-feaure, not in the triple. |
| StringRef Suffix = |
| getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple)); |
| bool ThumbDefault = (Suffix == "v7" && getTriple().isOSDarwin()); |
| std::string ArchName = "arm"; |
| |
| // Assembly files should start in ARM mode. |
| if (InputType != types::TY_PP_Asm && |
| Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault)) |
| ArchName = "thumb"; |
| Triple.setArchName(ArchName + Suffix.str()); |
| |
| return Triple.getTriple(); |
| } |
| } |
| } |
| |
| std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args, |
| types::ID InputType) const { |
| // Diagnose use of Darwin OS deployment target arguments on non-Darwin. |
| if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ, |
| options::OPT_miphoneos_version_min_EQ, |
| options::OPT_mios_simulator_version_min_EQ)) |
| getDriver().Diag(diag::err_drv_clang_unsupported) |
| << A->getAsString(Args); |
| |
| return ComputeLLVMTriple(Args, InputType); |
| } |
| |
| void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const { |
| // Each toolchain should provide the appropriate include flags. |
| } |
| |
| ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType( |
| const ArgList &Args) const |
| { |
| if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) { |
| StringRef Value = A->getValue(Args); |
| if (Value == "compiler-rt") |
| return ToolChain::RLT_CompilerRT; |
| if (Value == "libgcc") |
| return ToolChain::RLT_Libgcc; |
| getDriver().Diag(diag::err_drv_invalid_rtlib_name) |
| << A->getAsString(Args); |
| } |
| |
| return GetDefaultRuntimeLibType(); |
| } |
| |
| ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{ |
| if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) { |
| StringRef Value = A->getValue(Args); |
| if (Value == "libc++") |
| return ToolChain::CST_Libcxx; |
| if (Value == "libstdc++") |
| return ToolChain::CST_Libstdcxx; |
| getDriver().Diag(diag::err_drv_invalid_stdlib_name) |
| << A->getAsString(Args); |
| } |
| |
| return ToolChain::CST_Libstdcxx; |
| } |
| |
| /// \brief Utility function to add a system include directory to CC1 arguments. |
| /*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs, |
| ArgStringList &CC1Args, |
| const Twine &Path) { |
| CC1Args.push_back("-internal-isystem"); |
| CC1Args.push_back(DriverArgs.MakeArgString(Path)); |
| } |
| |
| /// \brief Utility function to add a system include directory with extern "C" |
| /// semantics to CC1 arguments. |
| /// |
| /// Note that this should be used rarely, and only for directories that |
| /// historically and for legacy reasons are treated as having implicit extern |
| /// "C" semantics. These semantics are *ignored* by and large today, but its |
| /// important to preserve the preprocessor changes resulting from the |
| /// classification. |
| /*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs, |
| ArgStringList &CC1Args, |
| const Twine &Path) { |
| CC1Args.push_back("-internal-externc-isystem"); |
| CC1Args.push_back(DriverArgs.MakeArgString(Path)); |
| } |
| |
| /// \brief Utility function to add a list of system include directories to CC1. |
| /*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs, |
| ArgStringList &CC1Args, |
| ArrayRef<StringRef> Paths) { |
| for (ArrayRef<StringRef>::iterator I = Paths.begin(), E = Paths.end(); |
| I != E; ++I) { |
| CC1Args.push_back("-internal-isystem"); |
| CC1Args.push_back(DriverArgs.MakeArgString(*I)); |
| } |
| } |
| |
| void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const { |
| // Header search paths should be handled by each of the subclasses. |
| // Historically, they have not been, and instead have been handled inside of |
| // the CC1-layer frontend. As the logic is hoisted out, this generic function |
| // will slowly stop being called. |
| // |
| // While it is being called, replicate a bit of a hack to propagate the |
| // '-stdlib=' flag down to CC1 so that it can in turn customize the C++ |
| // header search paths with it. Once all systems are overriding this |
| // function, the CC1 flag and this line can be removed. |
| DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ); |
| } |
| |
| void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| CXXStdlibType Type = GetCXXStdlibType(Args); |
| |
| switch (Type) { |
| case ToolChain::CST_Libcxx: |
| CmdArgs.push_back("-lc++"); |
| break; |
| |
| case ToolChain::CST_Libstdcxx: |
| CmdArgs.push_back("-lstdc++"); |
| break; |
| } |
| } |
| |
| void ToolChain::AddCCKextLibArgs(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| CmdArgs.push_back("-lcc_kext"); |
| } |