102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
//===--- AIX.cpp - AIX ToolChain Implementations ----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "AIX.h"
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#include "Arch/PPC.h"
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#include "CommonArgs.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Options.h"
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#include "clang/Driver/SanitizerArgs.h"
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#include "llvm/Option/ArgList.h"
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namespace aix = clang::driver::tools::aix;
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using AIX = clang::driver::toolchains::AIX;
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using namespace llvm::opt;
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void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output,
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const InputInfoList &Inputs, const ArgList &Args,
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const char *LinkingOutput) const {
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const AIX &ToolChain = static_cast<const AIX &>(getToolChain());
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ArgStringList CmdArgs;
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const bool IsArch32Bit = ToolChain.getTriple().isArch32Bit();
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const bool IsArch64Bit = ToolChain.getTriple().isArch64Bit();
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// Only support 32 and 64 bit.
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if (!(IsArch32Bit || IsArch64Bit))
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llvm_unreachable("Unsupported bit width value.");
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// Force static linking when "-static" is present.
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if (Args.hasArg(options::OPT_static))
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CmdArgs.push_back("-bnso");
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// Specify linker output file.
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assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
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if (Output.isFilename()) {
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CmdArgs.push_back("-o");
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CmdArgs.push_back(Output.getFilename());
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}
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// Set linking mode (i.e., 32/64-bit) and the address of
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// text and data sections based on arch bit width.
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if (IsArch32Bit) {
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CmdArgs.push_back("-b32");
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CmdArgs.push_back("-bpT:0x10000000");
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CmdArgs.push_back("-bpD:0x20000000");
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} else {
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// Must be 64-bit, otherwise asserted already.
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CmdArgs.push_back("-b64");
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CmdArgs.push_back("-bpT:0x100000000");
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CmdArgs.push_back("-bpD:0x110000000");
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}
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auto getCrt0Basename = [&Args, IsArch32Bit] {
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// Enable gprofiling when "-pg" is specified.
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if (Args.hasArg(options::OPT_pg))
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return IsArch32Bit ? "gcrt0.o" : "gcrt0_64.o";
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// Enable profiling when "-p" is specified.
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else if (Args.hasArg(options::OPT_p))
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return IsArch32Bit ? "mcrt0.o" : "mcrt0_64.o";
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else
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return IsArch32Bit ? "crt0.o" : "crt0_64.o";
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};
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if (!Args.hasArg(options::OPT_nostdlib)) {
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath(getCrt0Basename())));
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}
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// Specify linker input file(s).
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AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
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// Add directory to library search path.
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Args.AddAllArgs(CmdArgs, options::OPT_L);
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ToolChain.AddFilePathLibArgs(Args, CmdArgs);
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if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
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// Support POSIX threads if "-pthreads" or "-pthread" is present.
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if (Args.hasArg(options::OPT_pthreads, options::OPT_pthread))
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CmdArgs.push_back("-lpthreads");
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CmdArgs.push_back("-lc");
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}
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const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
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C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
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}
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/// AIX - AIX tool chain which can call ld(1) directly.
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// TODO: Enable direct call to as(1).
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AIX::AIX(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
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: ToolChain(D, Triple, Args) {
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getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
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}
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auto AIX::buildLinker() const -> Tool * { return new aix::Linker(*this); }
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