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-rw-r--r--clang/lib/Driver/ToolChain.cpp288
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diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
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+//===--- 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/ADT/StringSwitch.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.HasSubscripting = false;
+ runtime.HasTerminate = false;
+ return;
+
+ case ObjCRuntime::GNU:
+ // Assume a maximal GNU runtime.
+ runtime.HasARC = true;
+ runtime.HasWeak = true;
+ runtime.HasSubscripting = false; // to be added
+ 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) {
+ // For Darwin targets, the -arch option (which is translated to a
+ // corresponding -march option) should determine the architecture
+ // (and the Mach-O slice) regardless of any -mcpu options.
+ if (!Triple.isOSDarwin()) {
+ // 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();
+ }
+
+ return llvm::StringSwitch<const char *>(MArch)
+ .Cases("armv2", "armv2a","arm2")
+ .Case("armv3", "arm6")
+ .Case("armv3m", "arm7m")
+ .Cases("armv4", "armv4t", "arm7tdmi")
+ .Cases("armv5", "armv5t", "arm10tdmi")
+ .Cases("armv5e", "armv5te", "arm1026ejs")
+ .Case("armv5tej", "arm926ej-s")
+ .Cases("armv6", "armv6k", "arm1136jf-s")
+ .Case("armv6j", "arm1136j-s")
+ .Cases("armv6z", "armv6zk", "arm1176jzf-s")
+ .Case("armv6t2", "arm1156t2-s")
+ .Cases("armv7", "armv7a", "armv7-a", "cortex-a8")
+ .Cases("armv7r", "armv7-r", "cortex-r4")
+ .Cases("armv7m", "armv7-m", "cortex-m3")
+ .Case("ep9312", "ep9312")
+ .Case("iwmmxt", "iwmmxt")
+ .Case("xscale", "xscale")
+ .Cases("armv6m", "armv6-m", "cortex-m0")
+ // If all else failed, return the most base CPU LLVM supports.
+ .Default("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) {
+ return llvm::StringSwitch<const char *>(CPU)
+ .Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "v4t")
+ .Cases("arm720t", "arm9", "arm9tdmi", "v4t")
+ .Cases("arm920", "arm920t", "arm922t", "v4t")
+ .Cases("arm940t", "ep9312","v4t")
+ .Cases("arm10tdmi", "arm1020t", "v5")
+ .Cases("arm9e", "arm926ej-s", "arm946e-s", "v5e")
+ .Cases("arm966e-s", "arm968e-s", "arm10e", "v5e")
+ .Cases("arm1020e", "arm1022e", "xscale", "iwmmxt", "v5e")
+ .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "v6")
+ .Cases("arm1176jzf-s", "mpcorenovfp", "mpcore", "v6")
+ .Cases("arm1156t2-s", "arm1156t2f-s", "v6t2")
+ .Cases("cortex-a8", "cortex-a9", "v7")
+ .Case("cortex-m3", "v7m")
+ .Case("cortex-m4", "v7m")
+ .Case("cortex-m0", "v6m")
+ .Default("");
+}
+
+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");
+}
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