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//===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "Myriad.h"
#include "CommonArgs.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "llvm/Option/ArgList.h"
using namespace clang::driver;
using namespace clang::driver::toolchains;
using namespace clang;
using namespace llvm::opt;
using tools::addPathIfExists;
void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
assert(Inputs.size() == 1);
const InputInfo &II = Inputs[0];
assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
II.getType() == types::TY_PP_CXX);
if (JA.getKind() == Action::PreprocessJobClass) {
Args.ClaimAllArgs();
CmdArgs.push_back("-E");
} else {
assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
CmdArgs.push_back("-S");
CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
}
CmdArgs.push_back("-DMYRIAD2");
// Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
// flags, 'g' flags, 'M' flags, optimize flags, warning options,
// mcpu flags, mllvm flags, and Xclang flags.
// These are spelled the same way in clang and moviCompile.
Args.AddAllArgsExcept(
CmdArgs,
{options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
options::OPT_D, options::OPT_U, options::OPT_f_Group,
options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
options::OPT_mllvm, options::OPT_Xclang},
{options::OPT_fno_split_dwarf_inlining});
Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
// If we're producing a dependency file, and assembly is the final action,
// then the name of the target in the dependency file should be the '.o'
// file, not the '.s' file produced by this step. For example, instead of
// /tmp/mumble.s: mumble.c .../someheader.h
// the filename on the lefthand side should be "mumble.o"
if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
C.getActions().size() == 1 &&
C.getActions()[0]->getKind() == Action::AssembleJobClass) {
Arg *A = Args.getLastArg(options::OPT_o);
if (A) {
CmdArgs.push_back("-MT");
CmdArgs.push_back(Args.MakeArgString(A->getValue()));
}
}
CmdArgs.push_back(II.getFilename());
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
std::string Exec =
Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
Args.MakeArgString(Exec), CmdArgs,
Inputs, Output));
}
void tools::SHAVE::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
assert(Inputs.size() == 1);
const InputInfo &II = Inputs[0];
assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
assert(Output.getType() == types::TY_Object);
CmdArgs.push_back("-no6thSlotCompression");
const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
if (CPUArg)
CmdArgs.push_back(
Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
CmdArgs.push_back("-noSPrefixing");
CmdArgs.push_back("-a"); // Mystery option.
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
A->claim();
CmdArgs.push_back(
Args.MakeArgString(std::string("-i:") + A->getValue(0)));
}
CmdArgs.push_back(II.getFilename());
CmdArgs.push_back(
Args.MakeArgString(std::string("-o:") + Output.getFilename()));
std::string Exec =
Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
Args.MakeArgString(Exec), CmdArgs,
Inputs, Output));
}
void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &TC =
static_cast<const toolchains::MyriadToolChain &>(getToolChain());
const llvm::Triple &T = TC.getTriple();
ArgStringList CmdArgs;
bool UseStartfiles =
!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
bool UseDefaultLibs =
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
// Silence warning if the args contain both -nostdlib and -stdlib=.
Args.getLastArg(options::OPT_stdlib_EQ);
if (T.getArch() == llvm::Triple::sparc)
CmdArgs.push_back("-EB");
else // SHAVE assumes little-endian, and sparcel is expressly so.
CmdArgs.push_back("-EL");
// The remaining logic is mostly like gnutools::Linker::ConstructJob,
// but we never pass through a --sysroot option and various other bits.
// For example, there are no sanitizers (yet) nor gold linker.
// Eat some arguments that may be present but have no effect.
Args.ClaimAllArgs(options::OPT_g_Group);
Args.ClaimAllArgs(options::OPT_w);
Args.ClaimAllArgs(options::OPT_static_libgcc);
if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
CmdArgs.push_back("-s");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (UseStartfiles) {
// If you want startfiles, it means you want the builtin crti and crtbegin,
// but not crt0. Myriad link commands provide their own crt0.o as needed.
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
}
Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
options::OPT_e, options::OPT_s, options::OPT_t,
options::OPT_Z_Flag, options::OPT_r});
TC.AddFilePathLibArgs(Args, CmdArgs);
bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
if (UseDefaultLibs) {
if (NeedsSanitizerDeps)
linkSanitizerRuntimeDeps(TC, CmdArgs);
if (C.getDriver().CCCIsCXX()) {
if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
CmdArgs.push_back("-lc++");
CmdArgs.push_back("-lc++abi");
} else
CmdArgs.push_back("-lstdc++");
}
if (T.getOS() == llvm::Triple::RTEMS) {
CmdArgs.push_back("--start-group");
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
// You must provide your own "-L" option to enable finding these.
CmdArgs.push_back("-lrtemscpu");
CmdArgs.push_back("-lrtemsbsp");
CmdArgs.push_back("--end-group");
} else {
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lgcc");
}
}
if (UseStartfiles) {
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
}
std::string Exec =
Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
C.addCommand(std::make_unique<Command>(
JA, *this, ResponseFileSupport::AtFileCurCP(), Args.MakeArgString(Exec),
CmdArgs, Inputs, Output));
}
MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
: Generic_ELF(D, Triple, Args) {
// If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
// 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
// This won't work to find gcc. Instead we give the installation detector an
// extra triple, which is preferable to further hacks of the logic that at
// present is based solely on getArch(). In particular, it would be wrong to
// choose the myriad installation when targeting a non-myriad sparc install.
switch (Triple.getArch()) {
default:
D.Diag(clang::diag::err_target_unsupported_arch)
<< Triple.getArchName() << "myriad";
[[fallthrough]];
case llvm::Triple::shave:
return;
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
}
if (GCCInstallation.isValid()) {
// This directory contains crt{i,n,begin,end}.o as well as libgcc.
// These files are tied to a particular version of gcc.
SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
addPathIfExists(D, CompilerSupportDir, getFilePaths());
}
// libstd++ and libc++ must both be found in this one place.
addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
}
MyriadToolChain::~MyriadToolChain() {}
void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
}
void MyriadToolChain::addLibCxxIncludePaths(
const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
std::string Path(getDriver().getInstalledDir());
addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
}
void MyriadToolChain::addLibStdCxxIncludePaths(
const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
StringRef LibDir = GCCInstallation.getParentLibPath();
const GCCVersion &Version = GCCInstallation.getVersion();
StringRef TripleStr = GCCInstallation.getTriple().str();
const Multilib &Multilib = GCCInstallation.getMultilib();
addLibStdCXXIncludePaths(
LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args);
}
// MyriadToolChain handles several triples:
// {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
Tool *MyriadToolChain::SelectTool(const JobAction &JA) const {
// The inherited method works fine if not targeting the SHAVE.
if (!isShaveCompilation(getTriple()))
return ToolChain::SelectTool(JA);
switch (JA.getKind()) {
case Action::PreprocessJobClass:
case Action::CompileJobClass:
if (!Compiler)
Compiler.reset(new tools::SHAVE::Compiler(*this));
return Compiler.get();
case Action::AssembleJobClass:
if (!Assembler)
Assembler.reset(new tools::SHAVE::Assembler(*this));
return Assembler.get();
default:
return ToolChain::getTool(JA.getKind());
}
}
Tool *MyriadToolChain::buildLinker() const {
return new tools::Myriad::Linker(*this);
}
SanitizerMask MyriadToolChain::getSupportedSanitizers() const {
return SanitizerKind::Address;
}