alnyan/yggdrasil: Yggdrasil host support

clang/lib/Basic/Targets.cpp

@@ -142,6 +142,8 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
       return std::make_unique<DarwinAArch64TargetInfo>(Triple, Opts);
 
     switch (os) {
+    case llvm::Triple::Yggdrasil:
+      return std::make_unique<YggdrasilTargetInfo<AArch64leTargetInfo>>(Triple, Opts);
     case llvm::Triple::FreeBSD:
       return std::make_unique<FreeBSDTargetInfo<AArch64leTargetInfo>>(Triple,
                                                                       Opts);
@@ -439,6 +441,9 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
 
   case llvm::Triple::riscv64:
     switch (os) {
+    case llvm::Triple::Yggdrasil:
+      return std::make_unique<YggdrasilTargetInfo<RISCV64TargetInfo>>(Triple,
+                                                                      Opts);
     case llvm::Triple::FreeBSD:
       return std::make_unique<FreeBSDTargetInfo<RISCV64TargetInfo>>(Triple,
                                                                     Opts);
@@ -578,6 +583,8 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
     }
     case llvm::Triple::Haiku:
       return std::make_unique<HaikuX86_32TargetInfo>(Triple, Opts);
+    case llvm::Triple::Yggdrasil:
+      return std::make_unique<YggdrasilTargetInfo<X86_32TargetInfo>>(Triple, Opts);
     case llvm::Triple::RTEMS:
       return std::make_unique<RTEMSX86_32TargetInfo>(Triple, Opts);
     case llvm::Triple::NaCl:
@@ -638,6 +645,8 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
     }
     case llvm::Triple::Haiku:
       return std::make_unique<HaikuTargetInfo<X86_64TargetInfo>>(Triple, Opts);
+    case llvm::Triple::Yggdrasil:
+      return std::make_unique<YggdrasilTargetInfo<X86_64TargetInfo>>(Triple, Opts);
     case llvm::Triple::NaCl:
       return std::make_unique<NaClTargetInfo<X86_64TargetInfo>>(Triple, Opts);
     case llvm::Triple::PS4:

clang/lib/Basic/Targets/OSTargets.h

@@ -878,6 +878,25 @@ public:
   }
 };
 
+// Yggdrasil Target
+template <typename Target>
+class LLVM_LIBRARY_VISIBILITY YggdrasilTargetInfo : public OSTargetInfo<Target> {
+protected:
+    void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+                      MacroBuilder &Builder) const override {
+        Builder.defineMacro("__yggdrasil__");
+        Builder.defineMacro("__FLOAT128__");
+        this->PlatformName = "yggdrasil";
+    }
+public:
+    YggdrasilTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+        : OSTargetInfo<Target>(Triple, Opts) {
+        this->WIntType = TargetInfo::UnsignedInt;
+        this->MCountName = "__mcount";
+        this->HasFloat128 = true;
+    }
+};
+
 // WebAssembly target
 template <typename Target>
 class LLVM_LIBRARY_VISIBILITY WebAssemblyOSTargetInfo

clang/lib/Driver/CMakeLists.txt

@@ -85,6 +85,7 @@ add_clang_library(clangDriver
   ToolChains/PPCFreeBSD.cpp
   ToolChains/InterfaceStubs.cpp
   ToolChains/ZOS.cpp
+  ToolChains/Yggdrasil.cpp
   Types.cpp
   XRayArgs.cpp
 

clang/lib/Driver/Driver.cpp

@@ -21,6 +21,7 @@
 #include "ToolChains/DragonFly.h"
 #include "ToolChains/FreeBSD.h"
 #include "ToolChains/Fuchsia.h"
+#include "ToolChains/Yggdrasil.h"
 #include "ToolChains/Gnu.h"
 #include "ToolChains/HIPAMD.h"
 #include "ToolChains/HIPSPV.h"
@@ -1965,10 +1966,17 @@ int Driver::ExecuteCompilation(
 
     // llvm/lib/Support/*/Signals.inc will exit with a special return code
     // for SIGPIPE. Do not print diagnostics for this case.
+#if defined(__yggdrasil__)
+    if (CommandRes == -1) {
+      Res = CommandRes;
+      continue;
+    }
+#else
     if (CommandRes == EX_IOERR) {
       Res = CommandRes;
       continue;
     }
+#endif
 
     // Print extra information about abnormal failures, if possible.
     //
@@ -6351,6 +6359,9 @@ const ToolChain &Driver::getToolChain(const ArgList &Args,
     case llvm::Triple::Haiku:
       TC = std::make_unique<toolchains::Haiku>(*this, Target, Args);
       break;
+    case llvm::Triple::Yggdrasil:
+      TC = std::make_unique<toolchains::Yggdrasil>(*this, Target, Args);
+      break;
     case llvm::Triple::Darwin:
     case llvm::Triple::MacOSX:
     case llvm::Triple::IOS:

clang/lib/Driver/ToolChains/Yggdrasil.cpp

@@ -0,0 +1,260 @@
+#include "Yggdrasil.h"
+#include "CommonArgs.h"
+#include "clang/Config/config.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/DriverDiagnostic.h"
+#include "clang/Driver/MultilibBuilder.h"
+#include "clang/Driver/Options.h"
+#include "clang/Driver/SanitizerArgs.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/ProfileData/InstrProf.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/VirtualFileSystem.h"
+
+#include <iostream>
+
+using namespace clang::driver;
+using namespace clang::driver::toolchains;
+using namespace clang::driver::tools;
+using namespace clang;
+using namespace llvm::opt;
+
+using tools::addMultilibFlag;
+
+
+void yggdrasil::Linker::ConstructJob(
+    Compilation &C,
+    const JobAction &JA,
+    const InputInfo &Output,
+    const InputInfoList &Inputs,
+    const ArgList &Args,
+    const char *LinkingOutput
+) const {
+    const toolchains::Yggdrasil &ToolChain = static_cast<const toolchains::Yggdrasil &>(getToolChain());
+    const Driver &D = ToolChain.getDriver();
+
+    ArgStringList CmdArgs;
+
+    // Silence warning for "clang -g foo.o -o foo"
+    Args.ClaimAllArgs(options::OPT_g_Group);
+    // and "clang -emit-llvm foo.o -o foo"
+    Args.ClaimAllArgs(options::OPT_emit_llvm);
+    // and for "clang -w foo.o -o foo". Other warning options are already
+    // handled somewhere else.
+    Args.ClaimAllArgs(options::OPT_w);
+
+    const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
+
+    CmdArgs.push_back("-z");
+    CmdArgs.push_back("max-page-size=4096");
+
+    CmdArgs.push_back("--eh-frame-hdr");
+
+    if (!Args.hasArg(options::OPT_shared) &&
+        !Args.hasArg(options::OPT_static) &&
+        !Args.hasArg(options::OPT_r)) {
+        CmdArgs.push_back("-pie");
+    }
+
+    if (Args.hasArg(options::OPT_r)) {
+        CmdArgs.push_back("-r");
+    } else {
+        CmdArgs.push_back("--build-id");
+        CmdArgs.push_back("--hash-style=gnu");
+    }
+
+    if (!D.SysRoot.empty()) {
+        CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
+    }
+
+    if (Args.hasArg(options::OPT_s)) {
+        CmdArgs.push_back("-s");
+    }
+
+    if (Args.hasArg(options::OPT_static)) {
+        CmdArgs.push_back("-Bstatic");
+    } else {
+        if (Args.hasArg(options::OPT_shared)) {
+            CmdArgs.push_back("-shared");
+        }
+
+        CmdArgs.push_back("--dynamic-linker=/libexec/dyn-loader");
+    }
+
+    CmdArgs.push_back("-o");
+    CmdArgs.push_back(Output.getFilename());
+
+    if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, options::OPT_r)) {
+        if (!Args.hasArg(options::OPT_shared)) {
+            CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
+        }
+    }
+
+    Args.AddAllArgs(CmdArgs, options::OPT_L);
+    Args.AddAllArgs(CmdArgs, options::OPT_u);
+
+    ToolChain.AddFilePathLibArgs(Args, CmdArgs);
+
+    // if (D.isUsingLTO()) {
+    //     assert(!Inputs.empty() && "Must have at least one input.");
+    //     addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0],
+    //                   D.getLTOMode() == LTOK_Thin);
+    // }
+
+    if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
+        AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
+
+        if (!Args.hasArg(options::OPT_nolibc)) {
+            CmdArgs.push_back("-lygglibc");
+        }
+
+        if (D.CCCIsCXX()) {
+            if (ToolChain.ShouldLinkCXXStdlib(Args)) {
+                ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
+                CmdArgs.push_back("-lm");
+                // CmdArgs.push_back("-lpthread");
+            }
+        }
+    }
+
+    AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
+
+    C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
+                                           Exec, CmdArgs, Inputs, Output));
+}
+
+/// Yggdrasil - Yggdrasil OS tool chain which can call as(1) and ld(1) directly.
+
+Yggdrasil::Yggdrasil(
+    const Driver &D,
+    const llvm::Triple &Triple,
+    const ArgList &Args
+): ToolChain(D, Triple, Args) {
+    getProgramPaths().push_back(getDriver().Dir);
+
+    if (!D.SysRoot.empty()) {
+        SmallString<128> P(D.SysRoot);
+        llvm::sys::path::append(P, "lib");
+        getFilePaths().push_back(std::string(P));
+    }
+
+    getFilePaths().push_back(concat(getDriver().SysRoot, "/lib"));
+    getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib"));
+}
+
+std::string Yggdrasil::ComputeEffectiveClangTriple(const ArgList &Args,
+                                                   types::ID InputType) const {
+    llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
+    return Triple.str();
+}
+
+Tool *Yggdrasil::buildLinker() const {
+    return new tools::yggdrasil::Linker(*this);
+}
+
+ToolChain::RuntimeLibType Yggdrasil::GetRuntimeLibType(const ArgList &Args) const {
+    return ToolChain::RLT_CompilerRT;
+}
+
+ToolChain::RuntimeLibType Yggdrasil::GetDefaultRuntimeLibType() const {
+    return ToolChain::RLT_CompilerRT;
+}
+
+ToolChain::CXXStdlibType Yggdrasil::GetDefaultCXXStdlibType() const {
+    return ToolChain::CST_Libcxx;
+}
+
+ToolChain::UnwindLibType Yggdrasil::GetUnwindLibType(const ArgList &Args) const {
+    return ToolChain::UNW_None;
+}
+
+ToolChain::CXXStdlibType Yggdrasil::GetCXXStdlibType(const ArgList &Args) const {
+    return ToolChain::CST_Libcxx;
+}
+
+ToolChain::UnwindTableLevel Yggdrasil::getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const {
+    return ToolChain::UnwindTableLevel::None;
+}
+
+void Yggdrasil::addClangTargetOptions(const ArgList &DriverArgs,
+                                    ArgStringList &CC1Args,
+                                    Action::OffloadKind) const {
+    if (getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::riscv64) {
+        CC1Args.push_back("-mstack-alignment=16");
+    }
+  // if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
+  //                         options::OPT_fno_use_init_array, true))
+  //   CC1Args.push_back("-fno-use-init-array");
+
+  // CC1Args.push_back("-mlong-double-64"); // for newlib + libc++ compat
+
+  // CC1Args.push_back("-ffunction-sections"); // better to optimize binary sizes
+  // CC1Args.push_back("-fdata-sections");
+}
+
+void Yggdrasil::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+                                        ArgStringList &CC1Args) const {
+    const Driver &D = getDriver();
+
+    if (DriverArgs.hasArg(options::OPT_nostdinc)) {
+        return;
+    }
+
+    if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
+        SmallString<128> P(D.ResourceDir);
+        llvm::sys::path::append(P, "include");
+        addSystemInclude(DriverArgs, CC1Args, P);
+    }
+
+    if (DriverArgs.hasArg(options::OPT_nostdlibinc)) {
+        return;
+    }
+
+    if (!D.SysRoot.empty()) {
+        SmallString<128> P(D.SysRoot);
+        llvm::sys::path::append(P, "include");
+        addExternCSystemInclude(DriverArgs, CC1Args, P.str());
+    }
+
+    addSystemInclude(DriverArgs, CC1Args, concat(getDriver().SysRoot, "/usr/include"));
+}
+
+void Yggdrasil::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+                                           ArgStringList &CC1Args) const {
+    if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
+        DriverArgs.hasArg(options::OPT_nostdincxx)) {
+        return;
+    }
+
+    switch (GetCXXStdlibType(DriverArgs)) {
+    case ToolChain::CST_Libcxx: {
+        SmallString<128> P(getDriver().SysRoot);
+        llvm::sys::path::append(P, "include", "c++", "v1");
+        addSystemInclude(DriverArgs, CC1Args, P.str());
+        break;
+    }
+
+    default:
+        llvm_unreachable("invalid stdlib name");
+    }
+}
+
+void Yggdrasil::AddCXXStdlibLibArgs(const ArgList &Args,
+                                  ArgStringList &CmdArgs) const {
+    switch (GetCXXStdlibType(Args)) {
+    case ToolChain::CST_Libcxx:
+        CmdArgs.push_back("-lc++");
+        break;
+
+    case ToolChain::CST_Libstdcxx:
+        llvm_unreachable("invalid stdlib name");
+    }
+}
+
+std::string Yggdrasil::getCompilerRTPath() const {
+    SmallString<128> Path(getDriver().SysRoot);
+    llvm::sys::path::append(Path, "lib", getOSLibName());
+    return std::string(Path.str());
+}

clang/lib/Driver/ToolChains/Yggdrasil.h

@@ -0,0 +1,98 @@
+#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_YGGDRASIL_H
+#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_YGGDRASIL_H
+
+#include "Gnu.h"
+#include "clang/Basic/LangOptions.h"
+#include "clang/Driver/Tool.h"
+#include "clang/Driver/ToolChain.h"
+#include "llvm/MC/MCTargetOptions.h"
+
+namespace clang {
+namespace driver {
+namespace tools {
+namespace yggdrasil {
+
+class LLVM_LIBRARY_VISIBILITY Linker final : public Tool {
+public:
+  Linker(const ToolChain &TC) : Tool("yggdrasil::Linker", "ld.lld", TC) {}
+
+  bool hasIntegratedCPP() const override { return false; }
+  bool isLinkJob() const override { return true; }
+
+  void ConstructJob(Compilation &C, const JobAction &JA,
+                    const InputInfo &Output, const InputInfoList &Inputs,
+                    const llvm::opt::ArgList &TCArgs,
+                    const char *LinkingOutput) const override;
+};
+
+} // end yggdrasil
+} // end tools
+
+namespace toolchains {
+
+class LLVM_LIBRARY_VISIBILITY Yggdrasil : public ToolChain {
+public:
+    Yggdrasil(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args);
+
+    bool HasNativeLLVMSupport() const override { return true; }
+    bool IsIntegratedAssemblerDefault() const override { return true; }
+    bool IsMathErrnoDefault() const override { return false; }
+    bool useRelaxRelocations() const override { return true; }
+    UnwindTableLevel getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override;
+    RuntimeLibType GetDefaultRuntimeLibType() const override;
+    CXXStdlibType GetDefaultCXXStdlibType() const override;
+    bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const {
+        return true;
+    }
+    llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const override {
+        return llvm::ExceptionHandling::DwarfCFI;
+    }
+    bool isPICDefault() const override { return false; }
+    bool isPIEDefault(const llvm::opt::ArgList &Args) const override { return false; }
+    bool isPICDefaultForced() const override { return false; }
+
+    llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+        return llvm::DebuggerKind::GDB;
+    }
+
+    LangOptions::StackProtectorMode GetDefaultStackProtectorLevel(bool KernelOrKext) const override {
+        return LangOptions::SSPStrong;
+    }
+    std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args,
+                                          types::ID InputType) const override;
+
+    RuntimeLibType
+    GetRuntimeLibType(const llvm::opt::ArgList &Args) const override;
+    UnwindLibType
+    GetUnwindLibType(const llvm::opt::ArgList &Args) const override;
+    CXXStdlibType
+    GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
+
+    void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+                               llvm::opt::ArgStringList &CC1Args,
+                               Action::OffloadKind DeviceOffloadKind) const override;
+    void
+    AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                              llvm::opt::ArgStringList &CC1Args) const override;
+    void
+    AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                                 llvm::opt::ArgStringList &CC1Args) const override;
+    void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
+                             llvm::opt::ArgStringList &CmdArgs) const override;
+
+    const char *getDefaultLinker() const override {
+      return "ld.lld";
+    }
+
+    virtual std::string getCompilerRTPath() const override;
+
+protected:
+    Tool *buildLinker() const override;
+};
+
+} // end toolchains
+
+} // end driver
+} // end clang
+
+#endif

compiler-rt/lib/builtins/cpu_model/x86.c

@@ -1157,8 +1157,11 @@ int CONSTRUCTOR_ATTRIBUTE __cpu_indicator_init(void) {
   unsigned Vendor;
   unsigned Model, Family;
   unsigned Features[(CPU_FEATURE_MAX + 31) / 32] = {0};
+// TODO static_assert is not defined
+#if !defined(__yggdrasil__)
   static_assert(sizeof(Features) / sizeof(Features[0]) == 4, "");
   static_assert(sizeof(__cpu_features2) / sizeof(__cpu_features2[0]) == 3, "");
+#endif
 
   // This function needs to run just once.
   if (__cpu_model.__cpu_vendor)

libcxx/include/__config

@@ -817,7 +817,8 @@ typedef __char32_t char32_t;
         defined(__APPLE__) ||                                                                                          \
         defined(__MVS__) ||                                                                                            \
         defined(_AIX) ||                                                                                               \
-        defined(__EMSCRIPTEN__)
+        defined(__EMSCRIPTEN__) ||                                                                                     \
+        defined(__yggdrasil__)
 // clang-format on
 #      define _LIBCPP_HAS_THREAD_API_PTHREAD
 #    elif defined(__Fuchsia__)

libcxx/include/__locale

@@ -314,7 +314,7 @@ public:
 #  else
   static const mask __regex_word = 1 << 10;
 #  endif // defined(__BIONIC__)
-#elif defined(__GLIBC__)
+#elif defined(__GLIBC__) || defined(__yggdrasil__)
   typedef unsigned short mask;
   static const mask space  = _ISspace;
   static const mask print  = _ISprint;
@@ -326,7 +326,7 @@ public:
   static const mask punct  = _ISpunct;
   static const mask xdigit = _ISxdigit;
   static const mask blank  = _ISblank;
-#  if defined(__mips__) || (BYTE_ORDER == BIG_ENDIAN)
+#  if !defined(__yggdrasil__) && (defined(__mips__) || (BYTE_ORDER == BIG_ENDIAN))
   static const mask __regex_word = static_cast<mask>(_ISbit(15));
 #  else
   static const mask __regex_word = 0x80;

libcxx/include/ios

@@ -244,7 +244,11 @@ _LIBCPP_PUSH_MACROS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
+#if defined(__yggdrasil__)
+typedef ssize_t streamsize;
+#else
 typedef ptrdiff_t streamsize;
+#endif
 
 class _LIBCPP_EXPORTED_FROM_ABI ios_base {
 public:

libcxx/src/atomic.cpp

@@ -101,6 +101,18 @@ static void __libcpp_platform_wake_by_address(__cxx_atomic_contention_t const vo
   _umtx_op(const_cast<__cxx_atomic_contention_t*>(__ptr), UMTX_OP_WAKE, __notify_one ? 1 : INT_MAX, NULL, NULL);
 }
 
+#elif defined(__yggdrasil__)
+
+static void __libcpp_platform_wait_on_address(
+    __cxx_atomic_contention_t const volatile* __ptr,
+    __cxx_contention_t __val
+) {}
+
+static void __libcpp_platform_wake_by_address(
+    __cxx_atomic_contention_t const volatile*,
+    bool
+) {}
+
 #else // <- Add other operating systems here
 
 // Baseline is just a timed backoff

libcxx/src/chrono.cpp

@@ -33,7 +33,7 @@
 
 // OpenBSD does not have a fully conformant suite of POSIX timers, but
 // it does have clock_gettime and CLOCK_MONOTONIC which is all we need.
-#if defined(__APPLE__) || defined(__gnu_hurd__) || defined(__OpenBSD__) || (defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0)
+#if defined(__APPLE__) || defined(__gnu_hurd__) || defined(__OpenBSD__) || defined(__yggdrasil__) || (defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0)
 #  define _LIBCPP_HAS_CLOCK_GETTIME
 #endif
 

libcxx/src/locale.cpp

@@ -985,7 +985,7 @@ const ctype<char>::mask* ctype<char>::classic_table() noexcept {
   return _LIBCPP_GET_C_LOCALE->__ctype_b;
 #  elif defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
   return __pctype_func();
-#  elif defined(__EMSCRIPTEN__)
+#  elif defined(__EMSCRIPTEN__) || defined(__yggdrasil__)
   return *__ctype_b_loc();
 #  elif defined(_NEWLIB_VERSION)
   // Newlib has a 257-entry table in ctype_.c, where (char)0 starts at [1].

lld/Common/Filesystem.cpp

@@ -18,7 +18,7 @@
 #include "llvm/Support/Parallel.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/TimeProfiler.h"
-#if LLVM_ON_UNIX
+#if LLVM_ON_UNIX || defined(__yggdrasil__)
 #include <unistd.h>
 #endif
 #include <thread>

llvm/cmake/modules/HandleLLVMOptions.cmake

@@ -217,7 +217,7 @@ elseif(FUCHSIA OR UNIX)
   else()
     set(LLVM_HAVE_LINK_VERSION_SCRIPT 1)
   endif()
-elseif(CMAKE_SYSTEM_NAME STREQUAL "Generic")
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Generic" OR CMAKE_SYSTEM_NAME STREQUAL "yggdrasil")
   set(LLVM_ON_WIN32 0)
   set(LLVM_ON_UNIX 0)
   set(LLVM_HAVE_LINK_VERSION_SCRIPT 0)

llvm/include/llvm/ADT/GenericCycleImpl.h

@@ -393,7 +393,9 @@ void GenericCycleInfo<ContextT>::compute(FunctionT &F) {
                     << "\n");
   Compute.run(&F.front());
 
+#if !defined(NDEBUG)
   assert(validateTree());
+#endif
 }
 
 template <typename ContextT>
@@ -406,7 +408,9 @@ void GenericCycleInfo<ContextT>::splitCriticalEdge(BlockT *Pred, BlockT *Succ,
     return;
 
   addBlockToCycle(NewBlock, Cycle);
+#if !defined(NDEBUG)
   assert(validateTree());
+#endif
 }
 
 /// \brief Find the innermost cycle containing a given block.

llvm/include/llvm/Support/FileSystem.h

@@ -135,7 +135,7 @@ inline perms operator~(perms x) {
 /// represents the information provided by Windows FileFirstFile/FindNextFile.
 class basic_file_status {
 protected:
-  #if defined(LLVM_ON_UNIX)
+  #if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   time_t fs_st_atime = 0;
   time_t fs_st_mtime = 0;
   uint32_t fs_st_atime_nsec = 0;
@@ -159,7 +159,7 @@ public:
 
   explicit basic_file_status(file_type Type) : Type(Type) {}
 
-  #if defined(LLVM_ON_UNIX)
+  #if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   basic_file_status(file_type Type, perms Perms, time_t ATime,
                     uint32_t ATimeNSec, time_t MTime, uint32_t MTimeNSec,
                     uid_t UID, gid_t GID, off_t Size)
@@ -198,7 +198,7 @@ public:
   /// same machine.
   TimePoint<> getLastModificationTime() const;
 
-  #if defined(LLVM_ON_UNIX)
+  #if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   uint32_t getUser() const { return fs_st_uid; }
   uint32_t getGroup() const { return fs_st_gid; }
   uint64_t getSize() const { return fs_st_size; }
@@ -225,7 +225,7 @@ public:
 class file_status : public basic_file_status {
   friend bool equivalent(file_status A, file_status B);
 
-  #if defined(LLVM_ON_UNIX)
+  #if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   dev_t fs_st_dev = 0;
   nlink_t fs_st_nlinks = 0;
   ino_t fs_st_ino = 0;
@@ -240,7 +240,7 @@ public:
 
   explicit file_status(file_type Type) : basic_file_status(Type) {}
 
-  #if defined(LLVM_ON_UNIX)
+  #if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   file_status(file_type Type, perms Perms, dev_t Dev, nlink_t Links, ino_t Ino,
               time_t ATime, uint32_t ATimeNSec,
               time_t MTime, uint32_t MTimeNSec,
@@ -1209,7 +1209,7 @@ std::error_code unlockFile(int FD);
 /// means that the filesystem may have failed to perform some buffered writes.
 std::error_code closeFile(file_t &F);
 
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 /// @brief Change ownership of a file.
 ///
 /// @param Owner The owner of the file to change to.

llvm/include/llvm/Support/Program.h

@@ -28,7 +28,7 @@ namespace sys {
 
   /// This is the OS-specific separator for PATH like environment variables:
   // a colon on Unix or a semicolon on Windows.
-#if defined(LLVM_ON_UNIX)
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   const char EnvPathSeparator = ':';
 #elif defined (_WIN32)
   const char EnvPathSeparator = ';';

llvm/include/llvm/Support/thread.h

@@ -31,7 +31,7 @@ typedef PVOID HANDLE;
 
 namespace llvm {
 
-#if LLVM_ON_UNIX || _WIN32
+#if LLVM_ON_UNIX || defined(__yggdrasil__) || _WIN32
 
 /// LLVM thread following std::thread interface with added constructor to
 /// specify stack size.
@@ -46,7 +46,7 @@ class thread {
   }
 
 public:
-#if LLVM_ON_UNIX
+#if LLVM_ON_UNIX || defined(__yggdrasil__)
   using native_handle_type = pthread_t;
   using id = pthread_t;
   using start_routine_type = void *(*)(void *);

llvm/include/llvm/TargetParser/Triple.h

@@ -238,6 +238,7 @@ public:
     ShaderModel, // DirectX ShaderModel
     LiteOS,
     Serenity,
+    Yggdrasil,
     Vulkan, // Vulkan SPIR-V
     LastOSType = Vulkan
   };

llvm/lib/IR/Constants.cpp

@@ -2239,10 +2239,10 @@ Constant *ConstantExpr::getPointerBitCastOrAddrSpaceCast(Constant *S,
 }
 
 Constant *ConstantExpr::getTrunc(Constant *C, Type *Ty, bool OnlyIfReduced) {
-#ifndef NDEBUG
+// #ifndef NDEBUG
   bool fromVec = isa<VectorType>(C->getType());
   bool toVec = isa<VectorType>(Ty);
-#endif
+// #endif
   assert((fromVec == toVec) && "Cannot convert from scalar to/from vector");
   assert(C->getType()->isIntOrIntVectorTy() && "Trunc operand must be integer");
   assert(Ty->isIntOrIntVectorTy() && "Trunc produces only integral");

llvm/lib/IR/DebugInfoMetadata.cpp

@@ -382,11 +382,11 @@ StringRef DIScope::getName() const {
   return "";
 }
 
-#ifndef NDEBUG
+// #ifndef NDEBUG
 static bool isCanonical(const MDString *S) {
   return !S || !S->getString().empty();
 }
-#endif
+// #endif
 
 dwarf::Tag GenericDINode::getTag() const { return (dwarf::Tag)SubclassData16; }
 GenericDINode *GenericDINode::getImpl(LLVMContext &Context, unsigned Tag,

llvm/lib/IR/Value.cpp

@@ -465,7 +465,7 @@ void Value::assertModuleIsMaterializedImpl() const {
 #endif
 }
 
-#ifndef NDEBUG
+// #ifndef NDEBUG
 static bool contains(SmallPtrSetImpl<ConstantExpr *> &Cache, ConstantExpr *Expr,
                      Constant *C) {
   if (!Cache.insert(Expr).second)
@@ -498,7 +498,7 @@ static bool contains(Value *Expr, Value *V) {
   SmallPtrSet<ConstantExpr *, 4> Cache;
   return contains(Cache, CE, C);
 }
-#endif // NDEBUG
+// #endif // NDEBUG
 
 void Value::doRAUW(Value *New, ReplaceMetadataUses ReplaceMetaUses) {
   assert(New && "Value::replaceAllUsesWith(<null>) is invalid!");

llvm/lib/Support/CMakeLists.txt

@@ -37,6 +37,10 @@ if(LLVM_ENABLE_ZSTD)
   list(APPEND imported_libs ${zstd_target})
 endif()
 
+if (CMAKE_SYSTEM_NAME STREQUAL "yggdrasil")
+  set(system_libs ${system_libs} m)
+endif()
+
 if( WIN32 )
   # libuuid required for FOLDERID_Profile usage in lib/Support/Windows/Path.inc.
   # advapi32 required for CryptAcquireContextW in lib/Support/Windows/Path.inc.

llvm/lib/Support/COM.cpp

@@ -15,7 +15,7 @@
 #include "llvm/Config/llvm-config.h"
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/COM.inc"
 #elif defined(_WIN32)
 #include "Windows/COM.inc"

llvm/lib/Support/Chrono.cpp

@@ -26,7 +26,7 @@ static inline struct tm getStructTM(TimePoint<> TP) {
   struct tm Storage;
   std::time_t OurTime = toTimeT(TP);
 
-#if defined(LLVM_ON_UNIX)
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   struct tm *LT = ::localtime_r(&OurTime, &Storage);
   assert(LT);
   (void)LT;
@@ -44,7 +44,7 @@ static inline struct tm getStructTMUtc(UtcTime<> TP) {
   struct tm Storage;
   std::time_t OurTime = toTimeT(TP);
 
-#if defined(LLVM_ON_UNIX)
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
   struct tm *LT = ::gmtime_r(&OurTime, &Storage);
   assert(LT);
   (void)LT;

llvm/lib/Support/CrashRecoveryContext.cpp

@@ -344,8 +344,16 @@ static void uninstallExceptionOrSignalHandlers() {
 
 #include <signal.h>
 
-static const int Signals[] =
-    { SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGSEGV, SIGTRAP };
+static const int Signals[] = {
+    SIGABRT,
+    SIGBUS,
+    SIGFPE,
+#if !defined(__yggdrasil__)
+    SIGILL,
+#endif
+    SIGSEGV,
+    SIGTRAP
+};
 static const unsigned NumSignals = std::size(Signals);
 static struct sigaction PrevActions[NumSignals];
 
@@ -372,10 +380,12 @@ static void CrashRecoverySignalHandler(int Signal) {
   }
 
   // Unblock the signal we received.
+#if !defined(__yggdrasil__)
   sigset_t SigMask;
   sigemptyset(&SigMask);
   sigaddset(&SigMask, Signal);
   sigprocmask(SIG_UNBLOCK, &SigMask, nullptr);
+#endif
 
   // Return the same error code as if the program crashed, as mentioned in the
   // section "Exit Status for Commands":
@@ -383,8 +393,10 @@ static void CrashRecoverySignalHandler(int Signal) {
   int RetCode = 128 + Signal;
 
   // Don't consider a broken pipe as a crash (see clang/lib/Driver/Driver.cpp)
+#if !defined(__yggdrasil__)
   if (Signal == SIGPIPE)
     RetCode = EX_IOERR;
+#endif
 
   if (CRCI)
     const_cast<CrashRecoveryContextImpl *>(CRCI)->HandleCrash(RetCode, Signal);

llvm/lib/Support/Memory.cpp

@@ -19,7 +19,7 @@
 #endif // ifndef NDEBUG
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Memory.inc"
 #endif
 #ifdef _WIN32

llvm/lib/Support/Path.cpp

@@ -1196,7 +1196,7 @@ Error readNativeFileToEOF(file_t FileHandle, SmallVectorImpl<char> &Buffer,
 } // end namespace llvm
 
 // Include the truly platform-specific parts.
-#if defined(LLVM_ON_UNIX)
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Path.inc"
 #endif
 #if defined(_WIN32)

llvm/lib/Support/Process.cpp

@@ -119,7 +119,7 @@ bool Process::AreCoreFilesPrevented() { return coreFilesPrevented; }
 }
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Process.inc"
 #endif
 #ifdef _WIN32

llvm/lib/Support/Program.cpp

@@ -100,7 +100,7 @@ void sys::printArg(raw_ostream &OS, StringRef Arg, bool Quote) {
 }
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Program.inc"
 #endif
 #ifdef _WIN32

llvm/lib/Support/Signals.cpp

@@ -273,7 +273,7 @@ static bool printMarkupStackTrace(StringRef Argv0, void **StackTrace, int Depth,
 }
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Signals.inc"
 #endif
 #ifdef _WIN32

llvm/lib/Support/ThreadPool.cpp

@@ -158,8 +158,10 @@ void StdThreadPool::wait(ThreadPoolTaskGroup &Group) {
     return;
   }
   // Make sure to not deadlock waiting for oneself.
+#ifndef NDEBUG
   assert(CurrentThreadTaskGroups == nullptr ||
          !llvm::is_contained(*CurrentThreadTaskGroups, &Group));
+#endif
   // Handle the case of recursive call from another task in a different group,
   // in which case process tasks while waiting to keep the thread busy and avoid
   // possible deadlock.

llvm/lib/Support/Threading.cpp

@@ -65,7 +65,7 @@ unsigned llvm::ThreadPoolStrategy::compute_thread_count() const {
 }
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Threading.inc"
 #endif
 #ifdef _WIN32

llvm/lib/Support/Unix/Path.inc

@@ -112,7 +112,7 @@ typedef uint_t uint;
 #endif
 
 #if defined(__NetBSD__) || defined(__DragonFly__) || defined(__GNU__) ||       \
-    defined(__MVS__)
+    defined(__MVS__) || defined(__yggdrasil__)
 #define STATVFS_F_FLAG(vfs) (vfs).f_flag
 #else
 #define STATVFS_F_FLAG(vfs) (vfs).f_flags
@@ -505,6 +505,9 @@ static bool is_local_impl(struct STATVFS &Vfs) {
 #elif defined(__Fuchsia__)
   // Fuchsia doesn't yet support remote filesystem mounts.
   return true;
+#elif defined(__yggdrasil__)
+  // Yggdrasil doesn't yet support remote filesystem mounts.
+  return true;
 #elif defined(__EMSCRIPTEN__)
   // Emscripten doesn't currently support remote filesystem mounts.
   return true;

llvm/lib/Support/Unix/Process.inc

@@ -92,7 +92,9 @@ Expected<unsigned> Process::getPageSize() {
 }
 
 size_t Process::GetMallocUsage() {
-#if defined(HAVE_MALLINFO2)
+#if defined(__yggdrasil__)
+  return 1;
+#elif defined(HAVE_MALLINFO2)
   struct mallinfo2 mi;
   mi = ::mallinfo2();
   return mi.uordblks;

llvm/lib/Support/Unix/Program.inc

@@ -426,7 +426,7 @@ ProcessInfo llvm::sys::Wait(const ProcessInfo &PI,
   // Parent process: Wait for the child process to terminate.
   int status = 0;
   ProcessInfo WaitResult;
-#ifndef __Fuchsia__
+#if !defined(__Fuchsia__)
   rusage Info;
   if (ProcStat)
     ProcStat->reset();
@@ -473,7 +473,7 @@ ProcessInfo llvm::sys::Wait(const ProcessInfo &PI,
     sigaction(SIGALRM, &Old, nullptr);
   }
 
-#ifndef __Fuchsia__
+#if !defined(__Fuchsia__) && !defined(__yggdrasil__)
   if (ProcStat) {
     std::chrono::microseconds UserT = toDuration(Info.ru_utime);
     std::chrono::microseconds KernelT = toDuration(Info.ru_stime);

llvm/lib/Support/Unix/Signals.inc

@@ -213,7 +213,10 @@ static const int IntSigs[] = {SIGHUP, SIGINT, SIGTERM, SIGUSR2};
 
 /// Signals that represent that we have a bug, and our prompt termination has
 /// been ordered.
-static const int KillSigs[] = {SIGILL,
+static const int KillSigs[] = {
+#if !defined(__yggdrasil__)
+                               SIGILL,
+#endif
                                SIGTRAP,
                                SIGABRT,
                                SIGFPE,
@@ -437,7 +440,11 @@ void llvm::sys::SetOneShotPipeSignalFunction(void (*Handler)()) {
 
 void llvm::sys::DefaultOneShotPipeSignalHandler() {
   // Send a special return code that drivers can check for, from sysexits.h.
+#if defined(__yggdrasil__)
+  exit(-1);
+#else
   exit(EX_IOERR);
+#endif
 }
 
 // The public API

llvm/lib/Support/VirtualFileSystem.cpp

@@ -2323,9 +2323,11 @@ RedirectingFileSystem::lookupPathImpl(
     sys::path::const_iterator Start, sys::path::const_iterator End,
     RedirectingFileSystem::Entry *From,
     llvm::SmallVectorImpl<Entry *> &Entries) const {
+#ifndef NDEBUG
   assert(!isTraversalComponent(*Start) &&
          !isTraversalComponent(From->getName()) &&
          "Paths should not contain traversal components");
+#endif
 
   StringRef FromName = From->getName();
 
@@ -2725,7 +2727,9 @@ void YAMLVFSWriter::addEntry(StringRef VirtualPath, StringRef RealPath,
                              bool IsDirectory) {
   assert(sys::path::is_absolute(VirtualPath) && "virtual path not absolute");
   assert(sys::path::is_absolute(RealPath) && "real path not absolute");
+#ifndef NDEBUG
   assert(!pathHasTraversal(VirtualPath) && "path traversal is not supported");
+#endif
   Mappings.emplace_back(VirtualPath, RealPath, IsDirectory);
 }
 

llvm/lib/Support/Watchdog.cpp

@@ -14,7 +14,7 @@
 #include "llvm/Config/llvm-config.h"
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Watchdog.inc"
 #endif
 #ifdef _WIN32

llvm/lib/Support/raw_socket_stream.cpp

@@ -11,6 +11,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if !defined(__yggdrasil__)
+
 #include "llvm/Support/raw_socket_stream.h"
 #include "llvm/Config/config.h"
 #include "llvm/Support/Error.h"
@@ -339,3 +341,5 @@ ssize_t raw_socket_stream::read(char *Ptr, size_t Size,
   }
   return raw_fd_stream::read(Ptr, Size);
 }
+
+#endif // defined(__yggdrasil__)

llvm/lib/Support/regengine.inc

@@ -120,8 +120,8 @@ static char *pchar(int);
 #define	SP(t, s, c)	print(m, t, s, c, stdout)
 #define	AT(t, p1, p2, s1, s2)	at(m, t, p1, p2, s1, s2)
 #define	NOTE(str)	{ if (m->eflags&REG_TRACE) (void)printf("=%s\n", (str)); }
-static int nope = 0;
 #else
+static int nope = 0;
 #define	SP(t, s, c)	/* nothing */
 #define	AT(t, p1, p2, s1, s2)	/* nothing */
 #define	NOTE(s)	/* nothing */

llvm/lib/TargetParser/Host.cpp

@@ -23,7 +23,7 @@
 #include <string.h>
 
 // Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
+#if defined(LLVM_ON_UNIX) || defined(__yggdrasil__)
 #include "Unix/Host.inc"
 #include <sched.h>
 #endif

llvm/lib/TargetParser/Triple.cpp

@@ -292,6 +292,7 @@ StringRef Triple::getOSTypeName(OSType Kind) {
   case RTEMS: return "rtems";
   case Solaris: return "solaris";
   case Serenity: return "serenity";
+  case Yggdrasil: return "yggdrasil";
   case TvOS: return "tvos";
   case UEFI: return "uefi";
   case WASI: return "wasi";
@@ -686,6 +687,7 @@ static Triple::OSType parseOS(StringRef OSName) {
     .StartsWith("shadermodel", Triple::ShaderModel)
     .StartsWith("liteos", Triple::LiteOS)
     .StartsWith("serenity", Triple::Serenity)
+    .StartsWith("yggdrasil", Triple::Yggdrasil)
     .StartsWith("vulkan", Triple::Vulkan)
     .Default(Triple::UnknownOS);
 }