429 lines
16 KiB
C++
429 lines
16 KiB
C++
//===--- AVR.cpp - AVR 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 "AVR.h"
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#include "CommonArgs.h"
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#include "InputInfo.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/SubtargetFeature.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/FileSystem.h"
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using namespace clang::driver;
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using namespace clang::driver::toolchains;
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using namespace clang::driver::tools;
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using namespace clang;
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using namespace llvm::opt;
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namespace {
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const struct {
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StringRef Name;
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std::string SubPath;
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StringRef Family;
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} MCUInfo[] = {
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{"at90s1200", "", "avr1"},
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{"attiny11", "", "avr1"},
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{"attiny12", "", "avr1"},
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{"attiny15", "", "avr1"},
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{"attiny28", "", "avr1"},
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{"at90s2313", "tiny-stack", "avr2"},
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{"at90s2323", "tiny-stack", "avr2"},
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{"at90s2333", "tiny-stack", "avr2"},
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{"at90s2343", "tiny-stack", "avr2"},
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{"at90s4433", "tiny-stack", "avr2"},
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{"attiny22", "tiny-stack", "avr2"},
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{"attiny26", "tiny-stack", "avr2"},
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{"at90s4414", "", "avr2"},
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{"at90s4434", "", "avr2"},
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{"at90s8515", "", "avr2"},
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{"at90c8534", "", "avr2"},
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{"at90s8535", "", "avr2"},
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{"attiny13", "avr25/tiny-stack", "avr25"},
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{"attiny13a", "avr25/tiny-stack", "avr25"},
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{"attiny2313", "avr25/tiny-stack", "avr25"},
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{"attiny2313a", "avr25/tiny-stack", "avr25"},
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{"attiny24", "avr25/tiny-stack", "avr25"},
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{"attiny24a", "avr25/tiny-stack", "avr25"},
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{"attiny25", "avr25/tiny-stack", "avr25"},
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{"attiny261", "avr25/tiny-stack", "avr25"},
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{"attiny261a", "avr25/tiny-stack", "avr25"},
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{"at86rf401", "avr25", "avr25"},
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{"ata5272", "avr25", "avr25"},
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{"attiny4313", "avr25", "avr25"},
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{"attiny44", "avr25", "avr25"},
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{"attiny44a", "avr25", "avr25"},
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{"attiny84", "avr25", "avr25"},
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{"attiny84a", "avr25", "avr25"},
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{"attiny45", "avr25", "avr25"},
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{"attiny85", "avr25", "avr25"},
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{"attiny441", "avr25", "avr25"},
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{"attiny461", "avr25", "avr25"},
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{"attiny461a", "avr25", "avr25"},
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{"attiny841", "avr25", "avr25"},
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{"attiny861", "avr25", "avr25"},
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{"attiny861a", "avr25", "avr25"},
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{"attiny87", "avr25", "avr25"},
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{"attiny43u", "avr25", "avr25"},
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{"attiny48", "avr25", "avr25"},
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{"attiny88", "avr25", "avr25"},
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{"attiny828", "avr25", "avr25"},
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{"at43usb355", "avr3", "avr3"},
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{"at76c711", "avr3", "avr3"},
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{"atmega103", "avr31", "avr31"},
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{"at43usb320", "avr31", "avr31"},
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{"attiny167", "avr35", "avr35"},
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{"at90usb82", "avr35", "avr35"},
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{"at90usb162", "avr35", "avr35"},
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{"ata5505", "avr35", "avr35"},
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{"atmega8u2", "avr35", "avr35"},
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{"atmega16u2", "avr35", "avr35"},
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{"atmega32u2", "avr35", "avr35"},
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{"attiny1634", "avr35", "avr35"},
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{"atmega8", "avr4", "avr4"},
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{"ata6289", "avr4", "avr4"},
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{"atmega8a", "avr4", "avr4"},
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{"ata6285", "avr4", "avr4"},
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{"ata6286", "avr4", "avr4"},
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{"atmega48", "avr4", "avr4"},
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{"atmega48a", "avr4", "avr4"},
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{"atmega48pa", "avr4", "avr4"},
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{"atmega48pb", "avr4", "avr4"},
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{"atmega48p", "avr4", "avr4"},
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{"atmega88", "avr4", "avr4"},
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{"atmega88a", "avr4", "avr4"},
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{"atmega88p", "avr4", "avr4"},
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{"atmega88pa", "avr4", "avr4"},
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{"atmega88pb", "avr4", "avr4"},
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{"atmega8515", "avr4", "avr4"},
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{"atmega8535", "avr4", "avr4"},
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{"atmega8hva", "avr4", "avr4"},
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{"at90pwm1", "avr4", "avr4"},
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{"at90pwm2", "avr4", "avr4"},
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{"at90pwm2b", "avr4", "avr4"},
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{"at90pwm3", "avr4", "avr4"},
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{"at90pwm3b", "avr4", "avr4"},
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{"at90pwm81", "avr4", "avr4"},
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{"ata5790", "avr5", "avr5"},
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{"ata5795", "avr5", "avr5"},
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{"atmega16", "avr5", "avr5"},
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{"atmega16a", "avr5", "avr5"},
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{"atmega161", "avr5", "avr5"},
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{"atmega162", "avr5", "avr5"},
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{"atmega163", "avr5", "avr5"},
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{"atmega164a", "avr5", "avr5"},
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{"atmega164p", "avr5", "avr5"},
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{"atmega164pa", "avr5", "avr5"},
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{"atmega165", "avr5", "avr5"},
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{"atmega165a", "avr5", "avr5"},
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{"atmega165p", "avr5", "avr5"},
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{"atmega165pa", "avr5", "avr5"},
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{"atmega168", "avr5", "avr5"},
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{"atmega168a", "avr5", "avr5"},
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{"atmega168p", "avr5", "avr5"},
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{"atmega168pa", "avr5", "avr5"},
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{"atmega168pb", "avr5", "avr5"},
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{"atmega169", "avr5", "avr5"},
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{"atmega169a", "avr5", "avr5"},
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{"atmega169p", "avr5", "avr5"},
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{"atmega169pa", "avr5", "avr5"},
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{"atmega32", "avr5", "avr5"},
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{"atmega32a", "avr5", "avr5"},
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{"atmega323", "avr5", "avr5"},
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{"atmega324a", "avr5", "avr5"},
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{"atmega324p", "avr5", "avr5"},
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{"atmega324pa", "avr5", "avr5"},
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{"atmega325", "avr5", "avr5"},
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{"atmega325a", "avr5", "avr5"},
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{"atmega325p", "avr5", "avr5"},
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{"atmega325pa", "avr5", "avr5"},
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{"atmega3250", "avr5", "avr5"},
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{"atmega3250a", "avr5", "avr5"},
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{"atmega3250p", "avr5", "avr5"},
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{"atmega3250pa", "avr5", "avr5"},
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{"atmega328", "avr5", "avr5"},
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{"atmega328p", "avr5", "avr5"},
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{"atmega329", "avr5", "avr5"},
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{"atmega329a", "avr5", "avr5"},
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{"atmega329p", "avr5", "avr5"},
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{"atmega329pa", "avr5", "avr5"},
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{"atmega3290", "avr5", "avr5"},
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{"atmega3290a", "avr5", "avr5"},
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{"atmega3290p", "avr5", "avr5"},
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{"atmega3290pa", "avr5", "avr5"},
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{"atmega406", "avr5", "avr5"},
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{"atmega64", "avr5", "avr5"},
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{"atmega64a", "avr5", "avr5"},
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{"atmega640", "avr5", "avr5"},
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{"atmega644", "avr5", "avr5"},
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{"atmega644a", "avr5", "avr5"},
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{"atmega644p", "avr5", "avr5"},
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{"atmega644pa", "avr5", "avr5"},
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{"atmega645", "avr5", "avr5"},
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{"atmega645a", "avr5", "avr5"},
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{"atmega645p", "avr5", "avr5"},
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{"atmega649", "avr5", "avr5"},
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{"atmega649a", "avr5", "avr5"},
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{"atmega649p", "avr5", "avr5"},
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{"atmega6450", "avr5", "avr5"},
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{"atmega6450a", "avr5", "avr5"},
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{"atmega6450p", "avr5", "avr5"},
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{"atmega6490", "avr5", "avr5"},
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{"atmega6490a", "avr5", "avr5"},
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{"atmega6490p", "avr5", "avr5"},
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{"atmega64rfr2", "avr5", "avr5"},
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{"atmega644rfr2", "avr5", "avr5"},
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{"atmega16hva", "avr5", "avr5"},
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{"atmega16hva2", "avr5", "avr5"},
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{"atmega16hvb", "avr5", "avr5"},
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{"atmega16hvbrevb", "avr5", "avr5"},
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{"atmega32hvb", "avr5", "avr5"},
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{"atmega32hvbrevb", "avr5", "avr5"},
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{"atmega64hve", "avr5", "avr5"},
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{"at90can32", "avr5", "avr5"},
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{"at90can64", "avr5", "avr5"},
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{"at90pwm161", "avr5", "avr5"},
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{"at90pwm216", "avr5", "avr5"},
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{"at90pwm316", "avr5", "avr5"},
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{"atmega32c1", "avr5", "avr5"},
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{"atmega64c1", "avr5", "avr5"},
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{"atmega16m1", "avr5", "avr5"},
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{"atmega32m1", "avr5", "avr5"},
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{"atmega64m1", "avr5", "avr5"},
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{"atmega16u4", "avr5", "avr5"},
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{"atmega32u4", "avr5", "avr5"},
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{"atmega32u6", "avr5", "avr5"},
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{"at90usb646", "avr5", "avr5"},
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{"at90usb647", "avr5", "avr5"},
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{"at90scr100", "avr5", "avr5"},
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{"at94k", "avr5", "avr5"},
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{"m3000", "avr5", "avr5"},
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{"atmega128", "avr51", "avr51"},
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{"atmega128a", "avr51", "avr51"},
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{"atmega1280", "avr51", "avr51"},
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{"atmega1281", "avr51", "avr51"},
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{"atmega1284", "avr51", "avr51"},
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{"atmega1284p", "avr51", "avr51"},
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{"atmega128rfa1", "avr51", "avr51"},
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{"atmega128rfr2", "avr51", "avr51"},
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{"atmega1284rfr2", "avr51", "avr51"},
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{"at90can128", "avr51", "avr51"},
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{"at90usb1286", "avr51", "avr51"},
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{"at90usb1287", "avr51", "avr51"},
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{"atmega2560", "avr6", "avr6"},
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{"atmega2561", "avr6", "avr6"},
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{"atmega256rfr2", "avr6", "avr6"},
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{"atmega2564rfr2", "avr6", "avr6"},
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{"attiny4", "avrtiny", "avrtiny"},
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{"attiny5", "avrtiny", "avrtiny"},
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{"attiny9", "avrtiny", "avrtiny"},
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{"attiny10", "avrtiny", "avrtiny"},
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{"attiny20", "avrtiny", "avrtiny"},
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{"attiny40", "avrtiny", "avrtiny"},
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{"atxmega16a4", "avrxmega2", "avrxmega2"},
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{"atxmega16a4u", "avrxmega2", "avrxmega2"},
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{"atxmega16c4", "avrxmega2", "avrxmega2"},
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{"atxmega16d4", "avrxmega2", "avrxmega2"},
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{"atxmega32a4", "avrxmega2", "avrxmega2"},
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{"atxmega32a4u", "avrxmega2", "avrxmega2"},
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{"atxmega32c4", "avrxmega2", "avrxmega2"},
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{"atxmega32d4", "avrxmega2", "avrxmega2"},
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{"atxmega32e5", "avrxmega2", "avrxmega2"},
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{"atxmega16e5", "avrxmega2", "avrxmega2"},
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{"atxmega8e5", "avrxmega2", "avrxmega2"},
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{"atxmega64a3u", "avrxmega4", "avrxmega4"},
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{"atxmega64a4u", "avrxmega4", "avrxmega4"},
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{"atxmega64b1", "avrxmega4", "avrxmega4"},
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{"atxmega64b3", "avrxmega4", "avrxmega4"},
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{"atxmega64c3", "avrxmega4", "avrxmega4"},
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{"atxmega64d3", "avrxmega4", "avrxmega4"},
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{"atxmega64d4", "avrxmega4", "avrxmega4"},
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{"atxmega64a1", "avrxmega5", "avrxmega5"},
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{"atxmega64a1u", "avrxmega5", "avrxmega5"},
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{"atxmega128a3", "avrxmega6", "avrxmega6"},
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{"atxmega128a3u", "avrxmega6", "avrxmega6"},
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{"atxmega128b1", "avrxmega6", "avrxmega6"},
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{"atxmega128b3", "avrxmega6", "avrxmega6"},
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{"atxmega128c3", "avrxmega6", "avrxmega6"},
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{"atxmega128d3", "avrxmega6", "avrxmega6"},
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{"atxmega128d4", "avrxmega6", "avrxmega6"},
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{"atxmega192a3", "avrxmega6", "avrxmega6"},
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{"atxmega192a3u", "avrxmega6", "avrxmega6"},
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{"atxmega192c3", "avrxmega6", "avrxmega6"},
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{"atxmega192d3", "avrxmega6", "avrxmega6"},
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{"atxmega256a3", "avrxmega6", "avrxmega6"},
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{"atxmega256a3u", "avrxmega6", "avrxmega6"},
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{"atxmega256a3b", "avrxmega6", "avrxmega6"},
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{"atxmega256a3bu", "avrxmega6", "avrxmega6"},
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{"atxmega256c3", "avrxmega6", "avrxmega6"},
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{"atxmega256d3", "avrxmega6", "avrxmega6"},
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{"atxmega384c3", "avrxmega6", "avrxmega6"},
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{"atxmega384d3", "avrxmega6", "avrxmega6"},
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{"atxmega128a1", "avrxmega7", "avrxmega7"},
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{"atxmega128a1u", "avrxmega7", "avrxmega7"},
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{"atxmega128a4u", "avrxmega7", "avrxmega7"},
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};
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std::string GetMCUSubPath(StringRef MCUName) {
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for (const auto &MCU : MCUInfo)
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if (MCU.Name == MCUName)
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return std::string(MCU.SubPath);
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return "";
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}
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llvm::Optional<StringRef> GetMCUFamilyName(StringRef MCUName) {
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for (const auto &MCU : MCUInfo)
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if (MCU.Name == MCUName)
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return Optional<StringRef>(MCU.Family);
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return Optional<StringRef>();
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}
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llvm::Optional<unsigned> GetMCUSectionAddressData(StringRef MCU) {
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return llvm::StringSwitch<llvm::Optional<unsigned>>(MCU)
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.Case("atmega328", Optional<unsigned>(0x800100))
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.Case("atmega328p", Optional<unsigned>(0x800100))
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.Default(Optional<unsigned>());
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}
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const StringRef PossibleAVRLibcLocations[] = {
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"/usr/avr",
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"/usr/lib/avr",
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};
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} // end anonymous namespace
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/// AVR Toolchain
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AVRToolChain::AVRToolChain(const Driver &D, const llvm::Triple &Triple,
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const ArgList &Args)
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: Generic_ELF(D, Triple, Args), LinkStdlib(false) {
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GCCInstallation.init(Triple, Args);
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// Only add default libraries if the user hasn't explicitly opted out.
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if (!Args.hasArg(options::OPT_nostdlib) &&
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!Args.hasArg(options::OPT_nodefaultlibs) &&
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!Args.hasArg(options::OPT_c /* does not apply when not linking */)) {
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std::string CPU = getCPUName(Args, Triple);
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if (CPU.empty()) {
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// We cannot link any standard libraries without an MCU specified.
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D.Diag(diag::warn_drv_avr_mcu_not_specified);
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} else {
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Optional<StringRef> FamilyName = GetMCUFamilyName(CPU);
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Optional<std::string> AVRLibcRoot = findAVRLibcInstallation();
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if (!FamilyName.hasValue()) {
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// We do not have an entry for this CPU in the family
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// mapping table yet.
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D.Diag(diag::warn_drv_avr_family_linking_stdlibs_not_implemented)
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<< CPU;
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} else if (!GCCInstallation.isValid()) {
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// No avr-gcc found and so no runtime linked.
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D.Diag(diag::warn_drv_avr_gcc_not_found);
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} else if (!AVRLibcRoot.hasValue()) {
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// No avr-libc found and so no runtime linked.
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D.Diag(diag::warn_drv_avr_libc_not_found);
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} else { // We have enough information to link stdlibs
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std::string GCCRoot = std::string(GCCInstallation.getInstallPath());
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std::string LibcRoot = AVRLibcRoot.getValue();
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std::string SubPath = GetMCUSubPath(CPU);
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getFilePaths().push_back(LibcRoot + std::string("/lib/") + SubPath);
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getFilePaths().push_back(GCCRoot + std::string("/") + SubPath);
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LinkStdlib = true;
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}
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}
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if (!LinkStdlib)
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D.Diag(diag::warn_drv_avr_stdlib_not_linked);
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}
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}
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Tool *AVRToolChain::buildLinker() const {
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return new tools::AVR::Linker(getTriple(), *this, LinkStdlib);
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}
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void AVR::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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// Compute information about the target AVR.
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std::string CPU = getCPUName(Args, getToolChain().getTriple());
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llvm::Optional<StringRef> FamilyName = GetMCUFamilyName(CPU);
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llvm::Optional<unsigned> SectionAddressData = GetMCUSectionAddressData(CPU);
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std::string Linker = getToolChain().GetProgramPath(getShortName());
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ArgStringList CmdArgs;
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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.
|
|
getToolChain().getDriver().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");
|
|
|
|
// 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));
|
|
|
|
// 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 {
|
|
for (StringRef PossiblePath : PossibleAVRLibcLocations) {
|
|
// Return the first avr-libc installation that exists.
|
|
if (llvm::sys::fs::is_directory(PossiblePath))
|
|
return Optional<std::string>(std::string(PossiblePath));
|
|
}
|
|
|
|
return llvm::None;
|
|
}
|