2011-07-06 22:02:34 +00:00
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//===-- ARMMCTargetDesc.cpp - ARM Target Descriptions -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides ARM specific target descriptions.
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//
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//===----------------------------------------------------------------------===//
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#include "ARMMCTargetDesc.h"
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2011-07-14 23:50:31 +00:00
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#include "ARMMCAsmInfo.h"
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2011-07-06 22:02:34 +00:00
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Target/TargetRegistry.h"
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#define GET_REGINFO_MC_DESC
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#include "ARMGenRegisterInfo.inc"
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#define GET_INSTRINFO_MC_DESC
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#include "ARMGenInstrInfo.inc"
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#define GET_SUBTARGETINFO_MC_DESC
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#include "ARMGenSubtargetInfo.inc"
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using namespace llvm;
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2011-07-07 08:26:46 +00:00
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std::string ARM_MC::ParseARMTriple(StringRef TT) {
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2011-07-07 00:08:19 +00:00
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// Set the boolean corresponding to the current target triple, or the default
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// if one cannot be determined, to true.
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unsigned Len = TT.size();
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unsigned Idx = 0;
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2011-07-07 19:05:12 +00:00
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// FIXME: Enahnce Triple helper class to extract ARM version.
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2011-07-07 08:26:46 +00:00
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bool isThumb = false;
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2011-07-07 00:08:19 +00:00
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if (Len >= 5 && TT.substr(0, 4) == "armv")
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Idx = 4;
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else if (Len >= 6 && TT.substr(0, 5) == "thumb") {
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2011-07-07 08:26:46 +00:00
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isThumb = true;
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2011-07-07 00:08:19 +00:00
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if (Len >= 7 && TT[5] == 'v')
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Idx = 6;
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}
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std::string ARMArchFeature;
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if (Idx) {
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unsigned SubVer = TT[Idx];
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if (SubVer >= '7' && SubVer <= '9') {
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if (Len >= Idx+2 && TT[Idx+1] == 'm') {
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2011-07-07 03:55:05 +00:00
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// v7m: FeatureNoARM, FeatureDB, FeatureHWDiv
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ARMArchFeature = "+v7,+noarm,+db,+hwdiv";
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2011-07-07 00:08:19 +00:00
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} else if (Len >= Idx+3 && TT[Idx+1] == 'e'&& TT[Idx+2] == 'm') {
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2011-07-07 03:55:05 +00:00
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// v7em: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureDSPThumb2,
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// FeatureT2XtPk
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ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+t2dsp,t2xtpk";
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} else
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// v7a: FeatureNEON, FeatureDB, FeatureDSPThumb2
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ARMArchFeature = "+v7,+neon,+db,+t2dsp";
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2011-07-07 00:08:19 +00:00
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} else if (SubVer == '6') {
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2011-07-07 03:55:05 +00:00
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if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == '2')
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2011-07-07 00:08:19 +00:00
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ARMArchFeature = "+v6t2";
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else
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ARMArchFeature = "+v6";
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2011-07-07 00:08:19 +00:00
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} else if (SubVer == '5') {
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2011-07-07 03:55:05 +00:00
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if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == 'e')
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2011-07-07 00:08:19 +00:00
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ARMArchFeature = "+v5te";
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2011-07-07 03:55:05 +00:00
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else
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ARMArchFeature = "+v5t";
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} else if (SubVer == '4' && Len >= Idx+2 && TT[Idx+1] == 't')
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ARMArchFeature = "+v4t";
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2011-07-07 00:08:19 +00:00
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}
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2011-07-07 08:26:46 +00:00
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if (isThumb) {
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if (ARMArchFeature.empty())
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2011-07-07 19:05:12 +00:00
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ARMArchFeature = "+thumb-mode";
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2011-07-07 08:26:46 +00:00
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else
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2011-07-07 19:05:12 +00:00
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ARMArchFeature += ",+thumb-mode";
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2011-07-07 08:26:46 +00:00
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}
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2011-07-07 00:08:19 +00:00
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return ARMArchFeature;
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}
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2011-07-08 01:53:10 +00:00
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MCSubtargetInfo *ARM_MC::createARMMCSubtargetInfo(StringRef TT, StringRef CPU,
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StringRef FS) {
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std::string ArchFS = ARM_MC::ParseARMTriple(TT);
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if (!FS.empty()) {
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if (!ArchFS.empty())
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ArchFS = ArchFS + "," + FS.str();
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else
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ArchFS = FS;
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}
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MCSubtargetInfo *X = new MCSubtargetInfo();
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2011-07-11 03:57:24 +00:00
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InitARMMCSubtargetInfo(X, TT, CPU, ArchFS);
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2011-07-08 01:53:10 +00:00
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return X;
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}
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2011-07-14 23:50:31 +00:00
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// Force static initialization.
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extern "C" void LLVMInitializeARMMCSubtargetInfo() {
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TargetRegistry::RegisterMCSubtargetInfo(TheARMTarget,
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ARM_MC::createARMMCSubtargetInfo);
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TargetRegistry::RegisterMCSubtargetInfo(TheThumbTarget,
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ARM_MC::createARMMCSubtargetInfo);
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2011-07-08 01:53:10 +00:00
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}
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2011-07-14 23:50:31 +00:00
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static MCInstrInfo *createARMMCInstrInfo() {
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MCInstrInfo *X = new MCInstrInfo();
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InitARMMCInstrInfo(X);
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2011-07-08 01:53:10 +00:00
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return X;
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}
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extern "C" void LLVMInitializeARMMCInstrInfo() {
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TargetRegistry::RegisterMCInstrInfo(TheARMTarget, createARMMCInstrInfo);
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TargetRegistry::RegisterMCInstrInfo(TheThumbTarget, createARMMCInstrInfo);
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}
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2011-07-14 23:50:31 +00:00
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static MCRegisterInfo *createARMMCRegisterInfo() {
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MCRegisterInfo *X = new MCRegisterInfo();
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InitARMMCRegisterInfo(X);
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return X;
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}
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2011-07-08 01:53:10 +00:00
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extern "C" void LLVMInitializeARMMCRegInfo() {
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TargetRegistry::RegisterMCRegInfo(TheARMTarget, createARMMCRegisterInfo);
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TargetRegistry::RegisterMCRegInfo(TheThumbTarget, createARMMCRegisterInfo);
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}
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2011-07-09 05:47:46 +00:00
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2011-07-15 02:09:41 +00:00
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static MCAsmInfo *createARMMCAsmInfo(const Target &T, StringRef TT) {
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2011-07-14 23:50:31 +00:00
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Triple TheTriple(TT);
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if (TheTriple.isOSDarwin())
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return new ARMMCAsmInfoDarwin();
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return new ARMELFMCAsmInfo();
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}
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extern "C" void LLVMInitializeARMMCAsmInfo() {
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// Register the target asm info.
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2011-07-15 02:09:41 +00:00
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RegisterMCAsmInfoFn A(TheARMTarget, createARMMCAsmInfo);
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RegisterMCAsmInfoFn B(TheThumbTarget, createARMMCAsmInfo);
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2011-07-09 05:47:46 +00:00
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}
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