| //===--- AVR.cpp - AVR 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 "AVR.h" |
| #include "CommonArgs.h" |
| #include "clang/Driver/Compilation.h" |
| #include "clang/Driver/DriverDiagnostic.h" |
| #include "clang/Driver/InputInfo.h" |
| #include "clang/Driver/Options.h" |
| #include "llvm/ADT/Optional.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/StringSwitch.h" |
| #include "llvm/MC/MCSubtargetInfo.h" |
| #include "llvm/MC/SubtargetFeature.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/Support/FileSystem.h" |
| |
| using namespace clang::driver; |
| using namespace clang::driver::toolchains; |
| using namespace clang::driver::tools; |
| using namespace clang; |
| using namespace llvm::opt; |
| |
| namespace { |
| |
| constexpr struct { |
| StringRef Name; |
| StringRef SubPath; |
| StringRef Family; |
| unsigned DataAddr; |
| } MCUInfo[] = { |
| {"at90s1200", "", "avr1", 0}, |
| {"attiny11", "", "avr1", 0}, |
| {"attiny12", "", "avr1", 0}, |
| {"attiny15", "", "avr1", 0}, |
| {"attiny28", "", "avr1", 0}, |
| {"at90s2313", "tiny-stack", "avr2", 0x800060}, |
| {"at90s2323", "tiny-stack", "avr2", 0x800060}, |
| {"at90s2333", "tiny-stack", "avr2", 0x800060}, |
| {"at90s2343", "tiny-stack", "avr2", 0x800060}, |
| {"at90s4433", "tiny-stack", "avr2", 0x800060}, |
| {"attiny22", "tiny-stack", "avr2", 0x800060}, |
| {"attiny26", "tiny-stack", "avr2", 0x800060}, |
| {"at90s4414", "", "avr2", 0x800060}, |
| {"at90s4434", "", "avr2", 0x800060}, |
| {"at90s8515", "", "avr2", 0x800060}, |
| {"at90c8534", "", "avr2", 0x800060}, |
| {"at90s8535", "", "avr2", 0x800060}, |
| {"attiny13", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny13a", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny2313", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny2313a", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny24", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny24a", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny25", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny261", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"attiny261a", "avr25/tiny-stack", "avr25", 0x800060}, |
| {"at86rf401", "avr25", "avr25", 0x800060}, |
| {"ata5272", "avr25", "avr25", 0x800100}, |
| {"attiny4313", "avr25", "avr25", 0x800060}, |
| {"attiny44", "avr25", "avr25", 0x800060}, |
| {"attiny44a", "avr25", "avr25", 0x800060}, |
| {"attiny84", "avr25", "avr25", 0x800060}, |
| {"attiny84a", "avr25", "avr25", 0x800060}, |
| {"attiny45", "avr25", "avr25", 0x800060}, |
| {"attiny85", "avr25", "avr25", 0x800060}, |
| {"attiny441", "avr25", "avr25", 0x800100}, |
| {"attiny461", "avr25", "avr25", 0x800060}, |
| {"attiny461a", "avr25", "avr25", 0x800060}, |
| {"attiny841", "avr25", "avr25", 0x800100}, |
| {"attiny861", "avr25", "avr25", 0x800060}, |
| {"attiny861a", "avr25", "avr25", 0x800060}, |
| {"attiny87", "avr25", "avr25", 0x800100}, |
| {"attiny43u", "avr25", "avr25", 0x800060}, |
| {"attiny48", "avr25", "avr25", 0x800100}, |
| {"attiny88", "avr25", "avr25", 0x800100}, |
| {"attiny828", "avr25", "avr25", 0x800100}, |
| {"at43usb355", "avr3", "avr3", 0x800100}, |
| {"at76c711", "avr3", "avr3", 0x800060}, |
| {"atmega103", "avr31", "avr31", 0x800060}, |
| {"at43usb320", "avr31", "avr31", 0x800060}, |
| {"attiny167", "avr35", "avr35", 0x800100}, |
| {"at90usb82", "avr35", "avr35", 0x800100}, |
| {"at90usb162", "avr35", "avr35", 0x800100}, |
| {"ata5505", "avr35", "avr35", 0x800100}, |
| {"atmega8u2", "avr35", "avr35", 0x800100}, |
| {"atmega16u2", "avr35", "avr35", 0x800100}, |
| {"atmega32u2", "avr35", "avr35", 0x800100}, |
| {"attiny1634", "avr35", "avr35", 0x800100}, |
| {"atmega8", "avr4", "avr4", 0x800060}, |
| {"ata6289", "avr4", "avr4", 0x800100}, |
| {"atmega8a", "avr4", "avr4", 0x800060}, |
| {"ata6285", "avr4", "avr4", 0x800100}, |
| {"ata6286", "avr4", "avr4", 0x800100}, |
| {"atmega48", "avr4", "avr4", 0x800100}, |
| {"atmega48a", "avr4", "avr4", 0x800100}, |
| {"atmega48pa", "avr4", "avr4", 0x800100}, |
| {"atmega48pb", "avr4", "avr4", 0x800100}, |
| {"atmega48p", "avr4", "avr4", 0x800100}, |
| {"atmega88", "avr4", "avr4", 0x800100}, |
| {"atmega88a", "avr4", "avr4", 0x800100}, |
| {"atmega88p", "avr4", "avr4", 0x800100}, |
| {"atmega88pa", "avr4", "avr4", 0x800100}, |
| {"atmega88pb", "avr4", "avr4", 0x800100}, |
| {"atmega8515", "avr4", "avr4", 0x800060}, |
| {"atmega8535", "avr4", "avr4", 0x800060}, |
| {"atmega8hva", "avr4", "avr4", 0x800100}, |
| {"at90pwm1", "avr4", "avr4", 0x800100}, |
| {"at90pwm2", "avr4", "avr4", 0x800100}, |
| {"at90pwm2b", "avr4", "avr4", 0x800100}, |
| {"at90pwm3", "avr4", "avr4", 0x800100}, |
| {"at90pwm3b", "avr4", "avr4", 0x800100}, |
| {"at90pwm81", "avr4", "avr4", 0x800100}, |
| {"ata5790", "avr5", "avr5", 0x800100}, |
| {"ata5795", "avr5", "avr5", 0x800100}, |
| {"atmega16", "avr5", "avr5", 0x800060}, |
| {"atmega16a", "avr5", "avr5", 0x800060}, |
| {"atmega161", "avr5", "avr5", 0x800060}, |
| {"atmega162", "avr5", "avr5", 0x800100}, |
| {"atmega163", "avr5", "avr5", 0x800060}, |
| {"atmega164a", "avr5", "avr5", 0x800100}, |
| {"atmega164p", "avr5", "avr5", 0x800100}, |
| {"atmega164pa", "avr5", "avr5", 0x800100}, |
| {"atmega165", "avr5", "avr5", 0x800100}, |
| {"atmega165a", "avr5", "avr5", 0x800100}, |
| {"atmega165p", "avr5", "avr5", 0x800100}, |
| {"atmega165pa", "avr5", "avr5", 0x800100}, |
| {"atmega168", "avr5", "avr5", 0x800100}, |
| {"atmega168a", "avr5", "avr5", 0x800100}, |
| {"atmega168p", "avr5", "avr5", 0x800100}, |
| {"atmega168pa", "avr5", "avr5", 0x800100}, |
| {"atmega168pb", "avr5", "avr5", 0x800100}, |
| {"atmega169", "avr5", "avr5", 0x800100}, |
| {"atmega169a", "avr5", "avr5", 0x800100}, |
| {"atmega169p", "avr5", "avr5", 0x800100}, |
| {"atmega169pa", "avr5", "avr5", 0x800100}, |
| {"atmega32", "avr5", "avr5", 0x800060}, |
| {"atmega32a", "avr5", "avr5", 0x800060}, |
| {"atmega323", "avr5", "avr5", 0x800060}, |
| {"atmega324a", "avr5", "avr5", 0x800100}, |
| {"atmega324p", "avr5", "avr5", 0x800100}, |
| {"atmega324pa", "avr5", "avr5", 0x800100}, |
| {"atmega325", "avr5", "avr5", 0x800100}, |
| {"atmega325a", "avr5", "avr5", 0x800100}, |
| {"atmega325p", "avr5", "avr5", 0x800100}, |
| {"atmega325pa", "avr5", "avr5", 0x800100}, |
| {"atmega3250", "avr5", "avr5", 0x800100}, |
| {"atmega3250a", "avr5", "avr5", 0x800100}, |
| {"atmega3250p", "avr5", "avr5", 0x800100}, |
| {"atmega3250pa", "avr5", "avr5", 0x800100}, |
| {"atmega328", "avr5", "avr5", 0x800100}, |
| {"atmega328p", "avr5", "avr5", 0x800100}, |
| {"atmega329", "avr5", "avr5", 0x800100}, |
| {"atmega329a", "avr5", "avr5", 0x800100}, |
| {"atmega329p", "avr5", "avr5", 0x800100}, |
| {"atmega329pa", "avr5", "avr5", 0x800100}, |
| {"atmega3290", "avr5", "avr5", 0x800100}, |
| {"atmega3290a", "avr5", "avr5", 0x800100}, |
| {"atmega3290p", "avr5", "avr5", 0x800100}, |
| {"atmega3290pa", "avr5", "avr5", 0x800100}, |
| {"atmega406", "avr5", "avr5", 0x800100}, |
| {"atmega64", "avr5", "avr5", 0x800100}, |
| {"atmega64a", "avr5", "avr5", 0x800100}, |
| {"atmega640", "avr5", "avr5", 0x800200}, |
| {"atmega644", "avr5", "avr5", 0x800100}, |
| {"atmega644a", "avr5", "avr5", 0x800100}, |
| {"atmega644p", "avr5", "avr5", 0x800100}, |
| {"atmega644pa", "avr5", "avr5", 0x800100}, |
| {"atmega645", "avr5", "avr5", 0x800100}, |
| {"atmega645a", "avr5", "avr5", 0x800100}, |
| {"atmega645p", "avr5", "avr5", 0x800100}, |
| {"atmega649", "avr5", "avr5", 0x800100}, |
| {"atmega649a", "avr5", "avr5", 0x800100}, |
| {"atmega649p", "avr5", "avr5", 0x800100}, |
| {"atmega6450", "avr5", "avr5", 0x800100}, |
| {"atmega6450a", "avr5", "avr5", 0x800100}, |
| {"atmega6450p", "avr5", "avr5", 0x800100}, |
| {"atmega6490", "avr5", "avr5", 0x800100}, |
| {"atmega6490a", "avr5", "avr5", 0x800100}, |
| {"atmega6490p", "avr5", "avr5", 0x800100}, |
| {"atmega64rfr2", "avr5", "avr5", 0x800200}, |
| {"atmega644rfr2", "avr5", "avr5", 0x800200}, |
| {"atmega16hva", "avr5", "avr5", 0x800100}, |
| {"atmega16hva2", "avr5", "avr5", 0x800100}, |
| {"atmega16hvb", "avr5", "avr5", 0x800100}, |
| {"atmega16hvbrevb", "avr5", "avr5", 0x800100}, |
| {"atmega32hvb", "avr5", "avr5", 0x800100}, |
| {"atmega32hvbrevb", "avr5", "avr5", 0x800100}, |
| {"atmega64hve", "avr5", "avr5", 0x800100}, |
| {"at90can32", "avr5", "avr5", 0x800100}, |
| {"at90can64", "avr5", "avr5", 0x800100}, |
| {"at90pwm161", "avr5", "avr5", 0x800100}, |
| {"at90pwm216", "avr5", "avr5", 0x800100}, |
| {"at90pwm316", "avr5", "avr5", 0x800100}, |
| {"atmega32c1", "avr5", "avr5", 0x800100}, |
| {"atmega64c1", "avr5", "avr5", 0x800100}, |
| {"atmega16m1", "avr5", "avr5", 0x800100}, |
| {"atmega32m1", "avr5", "avr5", 0x800100}, |
| {"atmega64m1", "avr5", "avr5", 0x800100}, |
| {"atmega16u4", "avr5", "avr5", 0x800100}, |
| {"atmega32u4", "avr5", "avr5", 0x800100}, |
| {"atmega32u6", "avr5", "avr5", 0x800100}, |
| {"at90usb646", "avr5", "avr5", 0x800100}, |
| {"at90usb647", "avr5", "avr5", 0x800100}, |
| {"at90scr100", "avr5", "avr5", 0x800100}, |
| {"at94k", "avr5", "avr5", 0x800060}, |
| {"m3000", "avr5", "avr5", 0x800060}, |
| {"atmega128", "avr51", "avr51", 0x800100}, |
| {"atmega128a", "avr51", "avr51", 0x800100}, |
| {"atmega1280", "avr51", "avr51", 0x800200}, |
| {"atmega1281", "avr51", "avr51", 0x800200}, |
| {"atmega1284", "avr51", "avr51", 0x800100}, |
| {"atmega1284p", "avr51", "avr51", 0x800100}, |
| {"atmega128rfa1", "avr51", "avr51", 0x800200}, |
| {"atmega128rfr2", "avr51", "avr51", 0x800200}, |
| {"atmega1284rfr2", "avr51", "avr51", 0x800200}, |
| {"at90can128", "avr51", "avr51", 0x800200}, |
| {"at90usb1286", "avr51", "avr51", 0x800200}, |
| {"at90usb1287", "avr51", "avr51", 0x800200}, |
| {"atmega2560", "avr6", "avr6", 0x800200}, |
| {"atmega2561", "avr6", "avr6", 0x800200}, |
| {"atmega256rfr2", "avr6", "avr6", 0x800200}, |
| {"atmega2564rfr2", "avr6", "avr6", 0x800200}, |
| {"attiny4", "avrtiny", "avrtiny", 0x800040}, |
| {"attiny5", "avrtiny", "avrtiny", 0x800040}, |
| {"attiny9", "avrtiny", "avrtiny", 0x800040}, |
| {"attiny10", "avrtiny", "avrtiny", 0x800040}, |
| {"attiny20", "avrtiny", "avrtiny", 0x800040}, |
| {"attiny40", "avrtiny", "avrtiny", 0x800040}, |
| {"atxmega16a4", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega16a4u", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega16c4", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega16d4", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega32a4", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega32a4u", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega32c4", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega32d4", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega32e5", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega16e5", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega8e5", "avrxmega2", "avrxmega2", 0x802000}, |
| {"atxmega64a3u", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64a4u", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64b1", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64b3", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64c3", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64d3", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64d4", "avrxmega4", "avrxmega4", 0x802000}, |
| {"atxmega64a1", "avrxmega5", "avrxmega5", 0x802000}, |
| {"atxmega64a1u", "avrxmega5", "avrxmega5", 0x802000}, |
| {"atxmega128a3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128a3u", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128b1", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128b3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128c3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128d3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128d4", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega192a3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega192a3u", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega192c3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega192d3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega256a3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega256a3u", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega256a3b", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega256a3bu", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega256c3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega256d3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega384c3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega384d3", "avrxmega6", "avrxmega6", 0x802000}, |
| {"atxmega128a1", "avrxmega7", "avrxmega7", 0x802000}, |
| {"atxmega128a1u", "avrxmega7", "avrxmega7", 0x802000}, |
| {"atxmega128a4u", "avrxmega7", "avrxmega7", 0x802000}, |
| }; |
| |
| std::string GetMCUSubPath(StringRef MCUName) { |
| for (const auto &MCU : MCUInfo) |
| if (MCU.Name == MCUName) |
| return std::string(MCU.SubPath); |
| return ""; |
| } |
| |
| llvm::Optional<StringRef> GetMCUFamilyName(StringRef MCUName) { |
| for (const auto &MCU : MCUInfo) |
| if (MCU.Name == MCUName) |
| return Optional<StringRef>(MCU.Family); |
| return Optional<StringRef>(); |
| } |
| |
| llvm::Optional<unsigned> GetMCUSectionAddressData(StringRef MCUName) { |
| for (const auto &MCU : MCUInfo) |
| if (MCU.Name == MCUName && MCU.DataAddr > 0) |
| return Optional<unsigned>(MCU.DataAddr); |
| return Optional<unsigned>(); |
| } |
| |
| const StringRef PossibleAVRLibcLocations[] = { |
| "/avr", |
| "/usr/avr", |
| "/usr/lib/avr", |
| }; |
| |
| } // end anonymous namespace |
| |
| /// AVR Toolchain |
| AVRToolChain::AVRToolChain(const Driver &D, const llvm::Triple &Triple, |
| const ArgList &Args) |
| : Generic_ELF(D, Triple, Args), LinkStdlib(false) { |
| GCCInstallation.init(Triple, Args); |
| |
| // Only add default libraries if the user hasn't explicitly opted out. |
| if (!Args.hasArg(options::OPT_nostdlib) && |
| !Args.hasArg(options::OPT_nodefaultlibs) && |
| !Args.hasArg(options::OPT_c /* does not apply when not linking */)) { |
| std::string CPU = getCPUName(D, Args, Triple); |
| |
| if (CPU.empty()) { |
| // We cannot link any standard libraries without an MCU specified. |
| D.Diag(diag::warn_drv_avr_mcu_not_specified); |
| } else { |
| Optional<StringRef> FamilyName = GetMCUFamilyName(CPU); |
| Optional<std::string> AVRLibcRoot = findAVRLibcInstallation(); |
| |
| if (!FamilyName.hasValue()) { |
| // We do not have an entry for this CPU in the family |
| // mapping table yet. |
| D.Diag(diag::warn_drv_avr_family_linking_stdlibs_not_implemented) |
| << CPU; |
| } else if (!GCCInstallation.isValid()) { |
| // No avr-gcc found and so no runtime linked. |
| D.Diag(diag::warn_drv_avr_gcc_not_found); |
| } else if (!AVRLibcRoot.hasValue()) { |
| // No avr-libc found and so no runtime linked. |
| D.Diag(diag::warn_drv_avr_libc_not_found); |
| } else { // We have enough information to link stdlibs |
| std::string GCCRoot(GCCInstallation.getInstallPath()); |
| std::string GCCParentPath(GCCInstallation.getParentLibPath()); |
| std::string LibcRoot = AVRLibcRoot.getValue(); |
| std::string SubPath = GetMCUSubPath(CPU); |
| |
| getProgramPaths().push_back(GCCParentPath + "/../bin"); |
| getFilePaths().push_back(LibcRoot + std::string("/lib/") + SubPath); |
| getFilePaths().push_back(GCCRoot + std::string("/") + SubPath); |
| |
| LinkStdlib = true; |
| } |
| } |
| |
| if (!LinkStdlib) |
| D.Diag(diag::warn_drv_avr_stdlib_not_linked); |
| } |
| } |
| |
| void AVRToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const { |
| if (DriverArgs.hasArg(options::OPT_nostdinc) || |
| DriverArgs.hasArg(options::OPT_nostdlibinc)) |
| return; |
| |
| // Omit if there is no avr-libc installed. |
| Optional<std::string> AVRLibcRoot = findAVRLibcInstallation(); |
| if (!AVRLibcRoot.hasValue()) |
| return; |
| |
| // Add 'avr-libc/include' to clang system include paths if applicable. |
| std::string AVRInc = AVRLibcRoot.getValue() + "/include"; |
| if (llvm::sys::fs::is_directory(AVRInc)) |
| addSystemInclude(DriverArgs, CC1Args, AVRInc); |
| } |
| |
| void AVRToolChain::addClangTargetOptions( |
| const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, |
| Action::OffloadKind DeviceOffloadKind) const { |
| // By default, use `.ctors` (not `.init_array`), as required by libgcc, which |
| // runs constructors/destructors on AVR. |
| if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, |
| options::OPT_fno_use_init_array, false)) |
| CC1Args.push_back("-fno-use-init-array"); |
| } |
| |
| Tool *AVRToolChain::buildLinker() const { |
| return new tools::AVR::Linker(getTriple(), *this, LinkStdlib); |
| } |
| |
| void AVR::Linker::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, const ArgList &Args, |
| const char *LinkingOutput) const { |
| const Driver &D = getToolChain().getDriver(); |
| |
| // Compute information about the target AVR. |
| std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); |
| llvm::Optional<StringRef> FamilyName = GetMCUFamilyName(CPU); |
| llvm::Optional<unsigned> SectionAddressData = GetMCUSectionAddressData(CPU); |
| |
| std::string Linker = getToolChain().GetProgramPath(getShortName()); |
| ArgStringList CmdArgs; |
| AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA); |
| |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| |
| // Enable garbage collection of unused sections. |
| CmdArgs.push_back("--gc-sections"); |
| |
| // Add library search paths before we specify libraries. |
| Args.AddAllArgs(CmdArgs, options::OPT_L); |
| getToolChain().AddFilePathLibArgs(Args, CmdArgs); |
| |
| if (SectionAddressData.hasValue()) { |
| std::string DataSectionArg = std::string("-Tdata=0x") + |
| llvm::utohexstr(SectionAddressData.getValue()); |
| CmdArgs.push_back(Args.MakeArgString(DataSectionArg)); |
| } else { |
| // We do not have an entry for this CPU in the address mapping table yet. |
| D.Diag(diag::warn_drv_avr_linker_section_addresses_not_implemented) << CPU; |
| } |
| |
| // If the family name is known, we can link with the device-specific libgcc. |
| // Without it, libgcc will simply not be linked. This matches avr-gcc |
| // behavior. |
| if (LinkStdlib) { |
| assert(!CPU.empty() && "CPU name must be known in order to link stdlibs"); |
| |
| CmdArgs.push_back("--start-group"); |
| |
| // Add the object file for the CRT. |
| std::string CrtFileName = std::string("-l:crt") + CPU + std::string(".o"); |
| CmdArgs.push_back(Args.MakeArgString(CrtFileName)); |
| |
| CmdArgs.push_back("-lgcc"); |
| CmdArgs.push_back("-lm"); |
| CmdArgs.push_back("-lc"); |
| |
| // Add the link library specific to the MCU. |
| CmdArgs.push_back(Args.MakeArgString(std::string("-l") + CPU)); |
| |
| CmdArgs.push_back("--end-group"); |
| |
| // Specify the family name as the emulation mode to use. |
| // This is almost always required because otherwise avr-ld |
| // will assume 'avr2' and warn about the program being larger |
| // than the bare minimum supports. |
| CmdArgs.push_back(Args.MakeArgString(std::string("-m") + *FamilyName)); |
| } |
| |
| C.addCommand(std::make_unique<Command>( |
| JA, *this, ResponseFileSupport::AtFileCurCP(), Args.MakeArgString(Linker), |
| CmdArgs, Inputs, Output)); |
| } |
| |
| llvm::Optional<std::string> AVRToolChain::findAVRLibcInstallation() const { |
| // Search avr-libc installation according to avr-gcc installation. |
| std::string GCCParent(GCCInstallation.getParentLibPath()); |
| std::string Path(GCCParent + "/avr"); |
| if (llvm::sys::fs::is_directory(Path)) |
| return Path; |
| Path = GCCParent + "/../avr"; |
| if (llvm::sys::fs::is_directory(Path)) |
| return Path; |
| |
| // Search avr-libc installation from possible locations, and return the first |
| // one that exists, if there is no avr-gcc installed. |
| for (StringRef PossiblePath : PossibleAVRLibcLocations) { |
| std::string Path = getDriver().SysRoot + PossiblePath.str(); |
| if (llvm::sys::fs::is_directory(Path)) |
| return Path; |
| } |
| |
| return llvm::None; |
| } |
