#include "llvm/MC/MCInstrAnalysis.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/TargetRegistry.h"
std::string ARM_MC::ParseARMTriple(StringRef TT, StringRef CPU) {
Triple triple(TT);
- // Set the boolean corresponding to the current target triple, or the default
- // if one cannot be determined, to true.
- unsigned Len = TT.size();
- unsigned Idx = 0;
-
- // FIXME: Enhance Triple helper class to extract ARM version.
bool isThumb = triple.getArch() == Triple::thumb ||
triple.getArch() == Triple::thumbeb;
- if (Len >= 5 && TT.substr(0, 4) == "armv")
- Idx = 4;
- else if (Len >= 7 && TT.substr(0, 6) == "armebv")
- Idx = 6;
- else if (Len >= 7 && TT.substr(0, 6) == "thumbv")
- Idx = 6;
- else if (Len >= 9 && TT.substr(0, 8) == "thumbebv")
- Idx = 8;
bool NoCPU = CPU == "generic" || CPU.empty();
std::string ARMArchFeature;
- if (Idx) {
- unsigned SubVer = TT[Idx];
- if (SubVer == '8') {
- if (NoCPU)
- // v8a: FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSPThumb2,
- // FeatureMP, FeatureHWDiv, FeatureHWDivARM, FeatureTrustZone,
- // FeatureT2XtPk, FeatureCrypto, FeatureCRC
- ARMArchFeature = "+v8,+db,+fp-armv8,+neon,+t2dsp,+mp,+hwdiv,+hwdiv-arm,"
- "+trustzone,+t2xtpk,+crypto,+crc";
- else
- // Use CPU to figure out the exact features
- ARMArchFeature = "+v8";
- } else if (SubVer == '7') {
- if (Len >= Idx+2 && TT[Idx+1] == 'm') {
- isThumb = true;
- if (NoCPU)
- // v7m: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureMClass
- ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+mclass";
- else
- // Use CPU to figure out the exact features.
- ARMArchFeature = "+v7";
- } else if (Len >= Idx+3 && TT[Idx+1] == 'e'&& TT[Idx+2] == 'm') {
- if (NoCPU)
- // v7em: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureDSPThumb2,
- // FeatureT2XtPk, FeatureMClass
- ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+t2dsp,t2xtpk,+mclass";
- else
- // Use CPU to figure out the exact features.
- ARMArchFeature = "+v7";
- } else if (Len >= Idx+2 && TT[Idx+1] == 's') {
- if (NoCPU)
- // v7s: FeatureNEON, FeatureDB, FeatureDSPThumb2, FeatureHasRAS
- // Swift
- ARMArchFeature = "+v7,+swift,+neon,+db,+t2dsp,+ras";
- else
- // Use CPU to figure out the exact features.
- ARMArchFeature = "+v7";
- } else {
- // v7 CPUs have lots of different feature sets. If no CPU is specified,
- // then assume v7a (e.g. cortex-a8) feature set. Otherwise, return
- // the "minimum" feature set and use CPU string to figure out the exact
- // features.
- if (NoCPU)
- // v7a: FeatureNEON, FeatureDB, FeatureDSPThumb2, FeatureT2XtPk
- ARMArchFeature = "+v7,+neon,+db,+t2dsp,+t2xtpk";
- else
- // Use CPU to figure out the exact features.
- ARMArchFeature = "+v7";
- }
- } else if (SubVer == '6') {
- if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == '2')
- ARMArchFeature = "+v6t2";
- else if (Len >= Idx+2 && TT[Idx+1] == 'm') {
- isThumb = true;
- if (NoCPU)
- // v6m: FeatureNoARM, FeatureMClass
- ARMArchFeature = "+v6m,+noarm,+mclass";
- else
- ARMArchFeature = "+v6";
- } else
- ARMArchFeature = "+v6";
- } else if (SubVer == '5') {
- if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == 'e')
- ARMArchFeature = "+v5te";
- else
- ARMArchFeature = "+v5t";
- } else if (SubVer == '4' && Len >= Idx+2 && TT[Idx+1] == 't')
- ARMArchFeature = "+v4t";
+ switch (triple.getSubArch()) {
+ default:
+ llvm_unreachable("invalid sub-architecture for ARM");
+ case Triple::ARMSubArch_v8:
+ if (NoCPU)
+ // v8a: FeatureDB, FeatureFPARMv8, FeatureNEON, FeatureDSPThumb2,
+ // FeatureMP, FeatureHWDiv, FeatureHWDivARM, FeatureTrustZone,
+ // FeatureT2XtPk, FeatureCrypto, FeatureCRC
+ ARMArchFeature = "+v8,+db,+fp-armv8,+neon,+t2dsp,+mp,+hwdiv,+hwdiv-arm,"
+ "+trustzone,+t2xtpk,+crypto,+crc";
+ else
+ // Use CPU to figure out the exact features
+ ARMArchFeature = "+v8";
+ break;
+ case Triple::ARMSubArch_v7m:
+ isThumb = true;
+ if (NoCPU)
+ // v7m: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureMClass
+ ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+mclass";
+ else
+ // Use CPU to figure out the exact features.
+ ARMArchFeature = "+v7";
+ break;
+ case Triple::ARMSubArch_v7em:
+ if (NoCPU)
+ // v7em: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureDSPThumb2,
+ // FeatureT2XtPk, FeatureMClass
+ ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+t2dsp,t2xtpk,+mclass";
+ else
+ // Use CPU to figure out the exact features.
+ ARMArchFeature = "+v7";
+ break;
+ case Triple::ARMSubArch_v7s:
+ if (NoCPU)
+ // v7s: FeatureNEON, FeatureDB, FeatureDSPThumb2, FeatureHasRAS
+ // Swift
+ ARMArchFeature = "+v7,+swift,+neon,+db,+t2dsp,+ras";
+ else
+ // Use CPU to figure out the exact features.
+ ARMArchFeature = "+v7";
+ break;
+ case Triple::ARMSubArch_v7:
+ // v7 CPUs have lots of different feature sets. If no CPU is specified,
+ // then assume v7a (e.g. cortex-a8) feature set. Otherwise, return
+ // the "minimum" feature set and use CPU string to figure out the exact
+ // features.
+ if (NoCPU)
+ // v7a: FeatureNEON, FeatureDB, FeatureDSPThumb2, FeatureT2XtPk
+ ARMArchFeature = "+v7,+neon,+db,+t2dsp,+t2xtpk";
+ else
+ // Use CPU to figure out the exact features.
+ ARMArchFeature = "+v7";
+ break;
+ case Triple::ARMSubArch_v6t2:
+ ARMArchFeature = "+v6t2";
+ break;
+ case Triple::ARMSubArch_v6m:
+ isThumb = true;
+ if (NoCPU)
+ // v6m: FeatureNoARM, FeatureMClass
+ ARMArchFeature = "+v6m,+noarm,+mclass";
+ else
+ ARMArchFeature = "+v6";
+ break;
+ case Triple::ARMSubArch_v6:
+ ARMArchFeature = "+v6";
+ break;
+ case Triple::ARMSubArch_v5te:
+ ARMArchFeature = "+v5te";
+ break;
+ case Triple::ARMSubArch_v5:
+ ARMArchFeature = "+v5t";
+ break;
+ case Triple::ARMSubArch_v4t:
+ ARMArchFeature = "+v4t";
+ break;
+ case Triple::NoSubArch:
+ break;
}
if (isThumb) {
// This is duplicated code. Refactor this.
static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
MCContext &Ctx, MCAsmBackend &MAB,
- raw_ostream &OS,
- MCCodeEmitter *Emitter,
- const MCSubtargetInfo &STI,
- bool RelaxAll,
- bool NoExecStack) {
+ raw_ostream &OS, MCCodeEmitter *Emitter,
+ const MCSubtargetInfo &STI, bool RelaxAll) {
Triple TheTriple(TT);
- if (TheTriple.isOSBinFormatMachO()) {
+ switch (TheTriple.getObjectFormat()) {
+ default: llvm_unreachable("unsupported object format");
+ case Triple::MachO: {
MCStreamer *S = createMachOStreamer(Ctx, MAB, OS, Emitter, false);
new ARMTargetStreamer(*S);
return S;
}
-
- if (TheTriple.isOSWindows()) {
- llvm_unreachable("ARM does not support Windows COFF format");
+ case Triple::COFF:
+ assert(TheTriple.isOSWindows() && "non-Windows ARM COFF is not supported");
+ return createARMWinCOFFStreamer(Ctx, MAB, *Emitter, OS);
+ case Triple::ELF:
+ return createARMELFStreamer(Ctx, MAB, OS, Emitter, false,
+ TheTriple.getArch() == Triple::thumb);
}
-
- return createARMELFStreamer(Ctx, MAB, OS, Emitter, false, NoExecStack,
- TheTriple.getArch() == Triple::thumb);
}
static MCInstPrinter *createARMMCInstPrinter(const Target &T,
// Register the MC codegen info.
TargetRegistry::RegisterMCCodeGenInfo(TheARMLETarget, createARMMCCodeGenInfo);
TargetRegistry::RegisterMCCodeGenInfo(TheARMBETarget, createARMMCCodeGenInfo);
- TargetRegistry::RegisterMCCodeGenInfo(TheThumbLETarget, createARMMCCodeGenInfo);
- TargetRegistry::RegisterMCCodeGenInfo(TheThumbBETarget, createARMMCCodeGenInfo);
+ TargetRegistry::RegisterMCCodeGenInfo(TheThumbLETarget,
+ createARMMCCodeGenInfo);
+ TargetRegistry::RegisterMCCodeGenInfo(TheThumbBETarget,
+ createARMMCCodeGenInfo);
// Register the MC instruction info.
TargetRegistry::RegisterMCInstrInfo(TheARMLETarget, createARMMCInstrInfo);
TargetRegistry::RegisterAsmStreamer(TheThumbLETarget, createMCAsmStreamer);
TargetRegistry::RegisterAsmStreamer(TheThumbBETarget, createMCAsmStreamer);
+ // Register the null streamer.
+ TargetRegistry::RegisterNullStreamer(TheARMLETarget, createARMNullStreamer);
+ TargetRegistry::RegisterNullStreamer(TheARMBETarget, createARMNullStreamer);
+ TargetRegistry::RegisterNullStreamer(TheThumbLETarget, createARMNullStreamer);
+ TargetRegistry::RegisterNullStreamer(TheThumbBETarget, createARMNullStreamer);
+
// Register the MCInstPrinter.
TargetRegistry::RegisterMCInstPrinter(TheARMLETarget, createARMMCInstPrinter);
TargetRegistry::RegisterMCInstPrinter(TheARMBETarget, createARMMCInstPrinter);