blob: e4bbf498b9cd6adce77b92fe38669153a2dc0d39 [file] [log] [blame]
//===--- AIX.cpp - AIX 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 "AIX.h"
#include "Arch/PPC.h"
#include "CommonArgs.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/SanitizerArgs.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/Path.h"
using AIX = clang::driver::toolchains::AIX;
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang::driver::toolchains;
using namespace llvm::opt;
using namespace llvm::sys;
void aix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
const bool IsArch32Bit = getToolChain().getTriple().isArch32Bit();
const bool IsArch64Bit = getToolChain().getTriple().isArch64Bit();
// Only support 32 and 64 bit.
if (!IsArch32Bit && !IsArch64Bit)
llvm_unreachable("Unsupported bit width value.");
// Specify the mode in which the as(1) command operates.
if (IsArch32Bit) {
CmdArgs.push_back("-a32");
} else {
// Must be 64-bit, otherwise asserted already.
CmdArgs.push_back("-a64");
}
// Accept any mixture of instructions.
// On Power for AIX and Linux, this behaviour matches that of GCC for both the
// user-provided assembler source case and the compiler-produced assembler
// source case. Yet XL with user-provided assembler source would not add this.
CmdArgs.push_back("-many");
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
// Specify assembler output file.
assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
}
// Specify assembler input file.
// The system assembler on AIX takes exactly one input file. The driver is
// expected to invoke as(1) separately for each assembler source input file.
if (Inputs.size() != 1)
llvm_unreachable("Invalid number of input files.");
const InputInfo &II = Inputs[0];
assert((II.isFilename() || II.isNothing()) && "Invalid input.");
if (II.isFilename())
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
Exec, CmdArgs, Inputs, Output));
}
void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs, const ArgList &Args,
const char *LinkingOutput) const {
const AIX &ToolChain = static_cast<const AIX &>(getToolChain());
const Driver &D = ToolChain.getDriver();
ArgStringList CmdArgs;
const bool IsArch32Bit = ToolChain.getTriple().isArch32Bit();
const bool IsArch64Bit = ToolChain.getTriple().isArch64Bit();
// Only support 32 and 64 bit.
if (!(IsArch32Bit || IsArch64Bit))
llvm_unreachable("Unsupported bit width value.");
// Force static linking when "-static" is present.
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-bnso");
// Add options for shared libraries.
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-bM:SRE");
CmdArgs.push_back("-bnoentry");
}
// Specify PGO linker option without LTO
if (!D.isUsingLTO() &&
(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("-bdbg:namedsects");
// Specify linker output file.
assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
}
// Set linking mode (i.e., 32/64-bit) and the address of
// text and data sections based on arch bit width.
if (IsArch32Bit) {
CmdArgs.push_back("-b32");
CmdArgs.push_back("-bpT:0x10000000");
CmdArgs.push_back("-bpD:0x20000000");
} else {
// Must be 64-bit, otherwise asserted already.
CmdArgs.push_back("-b64");
CmdArgs.push_back("-bpT:0x100000000");
CmdArgs.push_back("-bpD:0x110000000");
}
auto getCrt0Basename = [&Args, IsArch32Bit] {
// Enable gprofiling when "-pg" is specified.
if (Args.hasArg(options::OPT_pg))
return IsArch32Bit ? "gcrt0.o" : "gcrt0_64.o";
// Enable profiling when "-p" is specified.
else if (Args.hasArg(options::OPT_p))
return IsArch32Bit ? "mcrt0.o" : "mcrt0_64.o";
else
return IsArch32Bit ? "crt0.o" : "crt0_64.o";
};
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
options::OPT_shared)) {
CmdArgs.push_back(
Args.MakeArgString(ToolChain.GetFilePath(getCrt0Basename())));
CmdArgs.push_back(Args.MakeArgString(
ToolChain.GetFilePath(IsArch32Bit ? "crti.o" : "crti_64.o")));
}
// Collect all static constructor and destructor functions in both C and CXX
// language link invocations. This has to come before AddLinkerInputs as the
// implied option needs to precede any other '-bcdtors' settings or
// '-bnocdtors' that '-Wl' might forward.
CmdArgs.push_back("-bcdtors:all:0:s");
// Specify linker input file(s).
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
// Add directory to library search path.
Args.AddAllArgs(CmdArgs, options::OPT_L);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
ToolChain.addProfileRTLibs(Args, CmdArgs);
if (getToolChain().ShouldLinkCXXStdlib(Args))
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
// Support POSIX threads if "-pthreads" or "-pthread" is present.
if (Args.hasArg(options::OPT_pthreads, options::OPT_pthread))
CmdArgs.push_back("-lpthreads");
if (D.CCCIsCXX())
CmdArgs.push_back("-lm");
CmdArgs.push_back("-lc");
}
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
Exec, CmdArgs, Inputs, Output));
}
/// AIX - AIX tool chain which can call as(1) and ld(1) directly.
AIX::AIX(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
: ToolChain(D, Triple, Args) {
ParseInlineAsmUsingAsmParser = Args.hasFlag(
options::OPT_fintegrated_as, options::OPT_fno_integrated_as, true);
getLibraryPaths().push_back(getDriver().SysRoot + "/usr/lib");
}
// Returns the effective header sysroot path to use.
// This comes from either -isysroot or --sysroot.
llvm::StringRef
AIX::GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const {
if (DriverArgs.hasArg(options::OPT_isysroot))
return DriverArgs.getLastArgValue(options::OPT_isysroot);
if (!getDriver().SysRoot.empty())
return getDriver().SysRoot;
return "/";
}
void AIX::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
// Return if -nostdinc is specified as a driver option.
if (DriverArgs.hasArg(options::OPT_nostdinc))
return;
llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
const Driver &D = getDriver();
// Add the Clang builtin headers (<resource>/include).
if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
SmallString<128> P(D.ResourceDir);
path::append(P, "/include");
addSystemInclude(DriverArgs, CC1Args, P.str());
}
// Return if -nostdlibinc is specified as a driver option.
if (DriverArgs.hasArg(options::OPT_nostdlibinc))
return;
// Add <sysroot>/usr/include.
SmallString<128> UP(Sysroot);
path::append(UP, "/usr/include");
addSystemInclude(DriverArgs, CC1Args, UP.str());
}
void AIX::AddClangCXXStdlibIncludeArgs(
const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
if (DriverArgs.hasArg(options::OPT_nostdinc) ||
DriverArgs.hasArg(options::OPT_nostdincxx) ||
DriverArgs.hasArg(options::OPT_nostdlibinc))
return;
switch (GetCXXStdlibType(DriverArgs)) {
case ToolChain::CST_Libstdcxx:
llvm::report_fatal_error(
"picking up libstdc++ headers is unimplemented on AIX");
case ToolChain::CST_Libcxx: {
llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
SmallString<128> PathCPP(Sysroot);
llvm::sys::path::append(PathCPP, "opt/IBM/openxlCSDK", "include", "c++",
"v1");
addSystemInclude(DriverArgs, CC1Args, PathCPP.str());
// Required in order to suppress conflicting C++ overloads in the system
// libc headers that were used by XL C++.
CC1Args.push_back("-D__LIBC_NO_CPP_MATH_OVERLOADS__");
return;
}
}
llvm_unreachable("Unexpected C++ library type; only libc++ is supported.");
}
void AIX::AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
llvm::opt::ArgStringList &CmdArgs) const {
switch (GetCXXStdlibType(Args)) {
case ToolChain::CST_Libstdcxx:
llvm::report_fatal_error("linking libstdc++ unimplemented on AIX");
case ToolChain::CST_Libcxx:
CmdArgs.push_back("-lc++");
CmdArgs.push_back("-lc++abi");
return;
}
llvm_unreachable("Unexpected C++ library type; only libc++ is supported.");
}
ToolChain::CXXStdlibType AIX::GetDefaultCXXStdlibType() const {
return ToolChain::CST_Libcxx;
}
ToolChain::RuntimeLibType AIX::GetDefaultRuntimeLibType() const {
return ToolChain::RLT_CompilerRT;
}
auto AIX::buildAssembler() const -> Tool * { return new aix::Assembler(*this); }
auto AIX::buildLinker() const -> Tool * { return new aix::Linker(*this); }