1 //===--- AIX.cpp - AIX ToolChain Implementations ----------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "AIX.h" 10 #include "Arch/PPC.h" 11 #include "CommonArgs.h" 12 #include "clang/Driver/Compilation.h" 13 #include "clang/Driver/Options.h" 14 #include "clang/Driver/SanitizerArgs.h" 15 #include "llvm/Option/ArgList.h" 16 17 using AIX = clang::driver::toolchains::AIX; 18 using namespace clang::driver; 19 using namespace clang::driver::tools; 20 21 using namespace llvm::opt; 22 23 void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA, 24 const InputInfo &Output, 25 const InputInfoList &Inputs, const ArgList &Args, 26 const char *LinkingOutput) const { 27 const AIX &ToolChain = static_cast<const AIX &>(getToolChain()); 28 ArgStringList CmdArgs; 29 30 const bool IsArch32Bit = ToolChain.getTriple().isArch32Bit(); 31 const bool IsArch64Bit = ToolChain.getTriple().isArch64Bit(); 32 // Only support 32 and 64 bit. 33 if (!(IsArch32Bit || IsArch64Bit)) 34 llvm_unreachable("Unsupported bit width value."); 35 36 // Force static linking when "-static" is present. 37 if (Args.hasArg(options::OPT_static)) 38 CmdArgs.push_back("-bnso"); 39 40 // Specify linker output file. 41 assert((Output.isFilename() || Output.isNothing()) && "Invalid output."); 42 if (Output.isFilename()) { 43 CmdArgs.push_back("-o"); 44 CmdArgs.push_back(Output.getFilename()); 45 } 46 47 // Set linking mode (i.e., 32/64-bit) and the address of 48 // text and data sections based on arch bit width. 49 if (IsArch32Bit) { 50 CmdArgs.push_back("-b32"); 51 CmdArgs.push_back("-bpT:0x10000000"); 52 CmdArgs.push_back("-bpD:0x20000000"); 53 } else { 54 // Must be 64-bit, otherwise asserted already. 55 CmdArgs.push_back("-b64"); 56 CmdArgs.push_back("-bpT:0x100000000"); 57 CmdArgs.push_back("-bpD:0x110000000"); 58 } 59 60 auto getCrt0Basename = [&Args, IsArch32Bit] { 61 // Enable gprofiling when "-pg" is specified. 62 if (Args.hasArg(options::OPT_pg)) 63 return IsArch32Bit ? "gcrt0.o" : "gcrt0_64.o"; 64 // Enable profiling when "-p" is specified. 65 else if (Args.hasArg(options::OPT_p)) 66 return IsArch32Bit ? "mcrt0.o" : "mcrt0_64.o"; 67 else 68 return IsArch32Bit ? "crt0.o" : "crt0_64.o"; 69 }; 70 71 if (!Args.hasArg(options::OPT_nostdlib)) { 72 CmdArgs.push_back( 73 Args.MakeArgString(ToolChain.GetFilePath(getCrt0Basename()))); 74 } 75 76 // Specify linker input file(s). 77 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 78 79 // Add directory to library search path. 80 Args.AddAllArgs(CmdArgs, options::OPT_L); 81 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 82 83 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 84 // Support POSIX threads if "-pthreads" or "-pthread" is present. 85 if (Args.hasArg(options::OPT_pthreads, options::OPT_pthread)) 86 CmdArgs.push_back("-lpthreads"); 87 88 CmdArgs.push_back("-lc"); 89 } 90 91 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 92 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 93 } 94 95 /// AIX - AIX tool chain which can call ld(1) directly. 96 // TODO: Enable direct call to as(1). 97 AIX::AIX(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) 98 : ToolChain(D, Triple, Args) { 99 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib"); 100 } 101 102 auto AIX::buildLinker() const -> Tool * { return new aix::Linker(*this); } 103