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//===--- 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"
using AIX = clang::driver::toolchains::AIX;
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace llvm::opt;
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());
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");
// 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)) {
CmdArgs.push_back(
Args.MakeArgString(ToolChain.GetFilePath(getCrt0Basename())));
}
// 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);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
// Support POSIX threads if "-pthreads" or "-pthread" is present.
if (Args.hasArg(options::OPT_pthreads, options::OPT_pthread))
CmdArgs.push_back("-lpthreads");
CmdArgs.push_back("-lc");
}
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
/// AIX - AIX tool chain which can call ld(1) directly.
// TODO: Enable direct call to as(1).
AIX::AIX(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
: ToolChain(D, Triple, Args) {
getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
}
auto AIX::buildLinker() const -> Tool * { return new aix::Linker(*this); }
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