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//===--- PPC.cpp - PPC Helpers for Tools ------------------------*- 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 "PPC.h"
#include "clang/Driver/CommonArgs.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/Options.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Option/ArgList.h"
#include "llvm/TargetParser/Host.h"
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang;
using namespace llvm::opt;
const char *ppc::getPPCAsmModeForCPU(StringRef Name) {
return llvm::StringSwitch<const char *>(Name)
.Case("pwr7", "-mpower7")
.Case("power7", "-mpower7")
.Case("pwr8", "-mpower8")
.Case("power8", "-mpower8")
.Case("ppc64le", "-mpower8")
.Case("pwr9", "-mpower9")
.Case("power9", "-mpower9")
.Case("pwr10", "-mpower10")
.Case("power10", "-mpower10")
.Case("pwr11", "-mpower11")
.Case("power11", "-mpower11")
.Default("-many");
}
void ppc::getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args,
std::vector<StringRef> &Features) {
if (Triple.getSubArch() == llvm::Triple::PPCSubArch_spe)
Features.push_back("+spe");
handleTargetFeaturesGroup(D, Triple, Args, Features,
options::OPT_m_ppc_Features_Group);
ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
if (FloatABI == ppc::FloatABI::Soft)
Features.push_back("-hard-float");
ppc::ReadGOTPtrMode ReadGOT = ppc::getPPCReadGOTPtrMode(D, Triple, Args);
if (ReadGOT == ppc::ReadGOTPtrMode::SecurePlt)
Features.push_back("+secure-plt");
bool UseSeparateSections = isUseSeparateSections(Triple);
bool HasDefaultDataSections = Triple.isOSBinFormatXCOFF();
if (Args.hasArg(options::OPT_maix_small_local_exec_tls) ||
Args.hasArg(options::OPT_maix_small_local_dynamic_tls)) {
if (!Triple.isOSAIX() || !Triple.isArch64Bit())
D.Diag(diag::err_opt_not_valid_on_target)
<< "-maix-small-local-[exec|dynamic]-tls";
// The -maix-small-local-[exec|dynamic]-tls option should only be used with
// -fdata-sections, as having data sections turned off with this option
// is not ideal for performance. Moreover, the
// small-local-[exec|dynamic]-tls region is a limited resource, and should
// not be used for variables that may be replaced.
if (!Args.hasFlag(options::OPT_fdata_sections,
options::OPT_fno_data_sections,
UseSeparateSections || HasDefaultDataSections))
D.Diag(diag::err_drv_argument_only_allowed_with)
<< "-maix-small-local-[exec|dynamic]-tls" << "-fdata-sections";
}
if (Args.hasArg(options::OPT_maix_shared_lib_tls_model_opt) &&
!(Triple.isOSAIX() && Triple.isArch64Bit()))
D.Diag(diag::err_opt_not_valid_on_target)
<< "-maix-shared-lib-tls-model-opt";
}
ppc::ReadGOTPtrMode ppc::getPPCReadGOTPtrMode(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args) {
if (Args.getLastArg(options::OPT_msecure_plt))
return ppc::ReadGOTPtrMode::SecurePlt;
if (Triple.isPPC32SecurePlt())
return ppc::ReadGOTPtrMode::SecurePlt;
else
return ppc::ReadGOTPtrMode::Bss;
}
ppc::FloatABI ppc::getPPCFloatABI(const Driver &D, const ArgList &Args) {
ppc::FloatABI ABI = ppc::FloatABI::Invalid;
if (Arg *A =
Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
options::OPT_mfloat_abi_EQ)) {
if (A->getOption().matches(options::OPT_msoft_float))
ABI = ppc::FloatABI::Soft;
else if (A->getOption().matches(options::OPT_mhard_float))
ABI = ppc::FloatABI::Hard;
else {
ABI = llvm::StringSwitch<ppc::FloatABI>(A->getValue())
.Case("soft", ppc::FloatABI::Soft)
.Case("hard", ppc::FloatABI::Hard)
.Default(ppc::FloatABI::Invalid);
if (ABI == ppc::FloatABI::Invalid && !StringRef(A->getValue()).empty()) {
D.Diag(clang::diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
ABI = ppc::FloatABI::Hard;
}
}
}
// If unspecified, choose the default based on the platform.
if (ABI == ppc::FloatABI::Invalid) {
ABI = ppc::FloatABI::Hard;
}
return ABI;
}
bool ppc::hasPPCAbiArg(const ArgList &Args, const char *Value) {
Arg *A = Args.getLastArg(options::OPT_mabi_EQ);
return A && (A->getValue() == StringRef(Value));
}
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