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llvm-project/clang/lib/Driver/ToolChains/PS4CPU.cpp
Ben Dunbobbin ae9231ca2a Reland - [Clang] Add the ability to map DLL storage class to visibility 
415f7ee883 had LIT test failures on any build where the clang executable
was not called "clang". I have adjusted the LIT CHECKs to remove the
binary name to fix this.

Original commit message:

For PlayStation we offer source code compatibility with
Microsoft's dllimport/export annotations; however, our file
format is based on ELF.

To support this we translate from DLL storage class to ELF
visibility at the end of codegen in Clang.

Other toolchains have used similar strategies (e.g. see the
documentation for this ARM toolchain:

https://developer.arm.com/documentation/dui0530/i/migrating-from-rvct-v3-1-to-rvct-v4-0/changes-to-symbol-visibility-between-rvct-v3-1-and-rvct-v4-0)

This patch adds the ability to perform this translation. Options
are provided to support customizing the mapping behaviour.

Differential Revision: https://reviews.llvm.org/D89970
2020-11-02 23:24:49 +00:00

285 lines
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//===--- PS4CPU.cpp - PS4CPU 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 "PS4CPU.h"
#include "FreeBSD.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 "clang/Driver/SanitizerArgs.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include <cstdlib> // ::getenv
using namespace clang::driver;
using namespace clang;
using namespace llvm::opt;
using clang::driver::tools::AddLinkerInputs;
void tools::PS4cpu::addProfileRTArgs(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
if ((Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
false) ||
Args.hasFlag(options::OPT_fprofile_generate,
options::OPT_fno_profile_generate, false) ||
Args.hasFlag(options::OPT_fprofile_generate_EQ,
options::OPT_fno_profile_generate, false) ||
Args.hasFlag(options::OPT_fprofile_instr_generate,
options::OPT_fno_profile_instr_generate, false) ||
Args.hasFlag(options::OPT_fprofile_instr_generate_EQ,
options::OPT_fno_profile_instr_generate, false) ||
Args.hasFlag(options::OPT_fcs_profile_generate,
options::OPT_fno_profile_generate, false) ||
Args.hasFlag(options::OPT_fcs_profile_generate_EQ,
options::OPT_fno_profile_generate, false) ||
Args.hasArg(options::OPT_fcreate_profile) ||
Args.hasArg(options::OPT_coverage)))
CmdArgs.push_back("--dependent-lib=libclang_rt.profile-x86_64.a");
}
void tools::PS4cpu::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
assert(Inputs.size() == 1 && "Unexpected number of inputs.");
const InputInfo &Input = Inputs[0];
assert(Input.isFilename() && "Invalid input.");
CmdArgs.push_back(Input.getFilename());
const char *Exec =
Args.MakeArgString(getToolChain().GetProgramPath("orbis-as"));
C.addCommand(std::make_unique<Command>(JA, *this,
ResponseFileSupport::AtFileUTF8(),
Exec, CmdArgs, Inputs, Output));
}
static void AddPS4SanitizerArgs(const ToolChain &TC, ArgStringList &CmdArgs) {
const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
if (SanArgs.needsUbsanRt()) {
CmdArgs.push_back("-lSceDbgUBSanitizer_stub_weak");
}
if (SanArgs.needsAsanRt()) {
CmdArgs.push_back("-lSceDbgAddressSanitizer_stub_weak");
}
}
void tools::PS4cpu::addSanitizerArgs(const ToolChain &TC,
ArgStringList &CmdArgs) {
const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
if (SanArgs.needsUbsanRt())
CmdArgs.push_back("--dependent-lib=libSceDbgUBSanitizer_stub_weak.a");
if (SanArgs.needsAsanRt())
CmdArgs.push_back("--dependent-lib=libSceDbgAddressSanitizer_stub_weak.a");
}
void tools::PS4cpu::Link::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::FreeBSD &ToolChain =
static_cast<const toolchains::FreeBSD &>(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);
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_pie))
CmdArgs.push_back("-pie");
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("--oformat=so");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if(!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
AddPS4SanitizerArgs(ToolChain, CmdArgs);
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Args.AddAllArgs(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_r);
if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
CmdArgs.push_back("--no-demangle");
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
if (Args.hasArg(options::OPT_pthread)) {
CmdArgs.push_back("-lpthread");
}
if (Args.hasArg(options::OPT_fuse_ld_EQ)) {
D.Diag(diag::err_drv_unsupported_opt_for_target)
<< "-fuse-ld" << getToolChain().getTriple().str();
}
const char *Exec =
Args.MakeArgString(ToolChain.GetProgramPath("orbis-ld"));
C.addCommand(std::make_unique<Command>(JA, *this,
ResponseFileSupport::AtFileUTF8(),
Exec, CmdArgs, Inputs, Output));
}
toolchains::PS4CPU::PS4CPU(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
: Generic_ELF(D, Triple, Args) {
if (Args.hasArg(clang::driver::options::OPT_static))
D.Diag(clang::diag::err_drv_unsupported_opt_for_target) << "-static"
<< "PS4";
// Determine where to find the PS4 libraries. We use SCE_ORBIS_SDK_DIR
// if it exists; otherwise use the driver's installation path, which
// should be <SDK_DIR>/host_tools/bin.
SmallString<512> PS4SDKDir;
if (const char *EnvValue = getenv("SCE_ORBIS_SDK_DIR")) {
if (!llvm::sys::fs::exists(EnvValue))
getDriver().Diag(clang::diag::warn_drv_ps4_sdk_dir) << EnvValue;
PS4SDKDir = EnvValue;
} else {
PS4SDKDir = getDriver().Dir;
llvm::sys::path::append(PS4SDKDir, "/../../");
}
// By default, the driver won't report a warning if it can't find
// PS4's include or lib directories. This behavior could be changed if
// -Weverything or -Winvalid-or-nonexistent-directory options are passed.
// If -isysroot was passed, use that as the SDK base path.
std::string PrefixDir;
if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
PrefixDir = A->getValue();
if (!llvm::sys::fs::exists(PrefixDir))
getDriver().Diag(clang::diag::warn_missing_sysroot) << PrefixDir;
} else
PrefixDir = std::string(PS4SDKDir.str());
SmallString<512> PS4SDKIncludeDir(PrefixDir);
llvm::sys::path::append(PS4SDKIncludeDir, "target/include");
if (!Args.hasArg(options::OPT_nostdinc) &&
!Args.hasArg(options::OPT_nostdlibinc) &&
!Args.hasArg(options::OPT_isysroot) &&
!Args.hasArg(options::OPT__sysroot_EQ) &&
!llvm::sys::fs::exists(PS4SDKIncludeDir)) {
getDriver().Diag(clang::diag::warn_drv_unable_to_find_directory_expected)
<< "PS4 system headers" << PS4SDKIncludeDir;
}
SmallString<512> PS4SDKLibDir(PS4SDKDir);
llvm::sys::path::append(PS4SDKLibDir, "target/lib");
if (!Args.hasArg(options::OPT_nostdlib) &&
!Args.hasArg(options::OPT_nodefaultlibs) &&
!Args.hasArg(options::OPT__sysroot_EQ) && !Args.hasArg(options::OPT_E) &&
!Args.hasArg(options::OPT_c) && !Args.hasArg(options::OPT_S) &&
!Args.hasArg(options::OPT_emit_ast) &&
!llvm::sys::fs::exists(PS4SDKLibDir)) {
getDriver().Diag(clang::diag::warn_drv_unable_to_find_directory_expected)
<< "PS4 system libraries" << PS4SDKLibDir;
return;
}
getFilePaths().push_back(std::string(PS4SDKLibDir.str()));
}
Tool *toolchains::PS4CPU::buildAssembler() const {
return new tools::PS4cpu::Assemble(*this);
}
Tool *toolchains::PS4CPU::buildLinker() const {
return new tools::PS4cpu::Link(*this);
}
bool toolchains::PS4CPU::isPICDefault() const { return true; }
bool toolchains::PS4CPU::HasNativeLLVMSupport() const { return true; }
SanitizerMask toolchains::PS4CPU::getSupportedSanitizers() const {
SanitizerMask Res = ToolChain::getSupportedSanitizers();
Res |= SanitizerKind::Address;
Res |= SanitizerKind::PointerCompare;
Res |= SanitizerKind::PointerSubtract;
Res |= SanitizerKind::Vptr;
return Res;
}
void toolchains::PS4CPU::addClangTargetOptions(
const ArgList &DriverArgs, ArgStringList &CC1Args,
Action::OffloadKind DeviceOffloadingKind) const {
// PS4 does not use init arrays.
if (DriverArgs.hasArg(options::OPT_fuse_init_array)) {
Arg *A = DriverArgs.getLastArg(options::OPT_fuse_init_array);
getDriver().Diag(clang::diag::err_drv_unsupported_opt_for_target)
<< A->getAsString(DriverArgs) << getTriple().str();
}
CC1Args.push_back("-fno-use-init-array");
const Arg *A =
DriverArgs.getLastArg(options::OPT_fvisibility_from_dllstorageclass,
options::OPT_fno_visibility_from_dllstorageclass);
if (!A ||
A->getOption().matches(options::OPT_fvisibility_from_dllstorageclass)) {
CC1Args.push_back("-fvisibility-from-dllstorageclass");
if (DriverArgs.hasArg(options::OPT_fvisibility_dllexport_EQ))
DriverArgs.AddLastArg(CC1Args, options::OPT_fvisibility_dllexport_EQ);
else
CC1Args.push_back("-fvisibility-dllexport=protected");
if (DriverArgs.hasArg(options::OPT_fvisibility_nodllstorageclass_EQ))
DriverArgs.AddLastArg(CC1Args,
options::OPT_fvisibility_nodllstorageclass_EQ);
else
CC1Args.push_back("-fvisibility-nodllstorageclass=hidden");
if (DriverArgs.hasArg(options::OPT_fvisibility_externs_dllimport_EQ))
DriverArgs.AddLastArg(CC1Args,
options::OPT_fvisibility_externs_dllimport_EQ);
else
CC1Args.push_back("-fvisibility-externs-dllimport=default");
if (DriverArgs.hasArg(
options::OPT_fvisibility_externs_nodllstorageclass_EQ))
DriverArgs.AddLastArg(
CC1Args, options::OPT_fvisibility_externs_nodllstorageclass_EQ);
else
CC1Args.push_back("-fvisibility-externs-nodllstorageclass=default");
}
}
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