================
@@ -148,13 +150,151 @@ class AArch64TargetAsmStreamer : public
AArch64TargetStreamer {
OS << "\t.seh_save_any_reg_px\tq" << Reg << ", " << Offset << "\n";
}
+ void emitAttribute(StringRef VendorName, unsigned Tag, unsigned Value,
+ std::string String, bool Override) override {
+
+ // AArch64 build attributes for assembly attribute form:
+ // .aeabi_attribute tag, value
+ if (unsigned(-1) == Value && "" == String) {
+ assert(0 && "Arguments error");
+ return;
+ }
+
+ unsigned VendorID = AArch64BuildAttributes::getVendorID(VendorName);
+
+ switch (VendorID) {
+ default:
+ assert(0 && "Subsection name error");
+ break;
+ case AArch64BuildAttributes::VENDOR_UNKNOWN:
+ if (unsigned(-1) != Value) {
+ OS << "\t.aeabi_attribute" << "\t" << Tag << ", " << Value;
+ AArch64TargetStreamer::emitAttribute(VendorName, Tag, Value, "",
+ Override);
+ }
+ if ("" != String) {
+ OS << "\t.aeabi_attribute" << "\t" << Tag << ", " << String;
+ AArch64TargetStreamer::emitAttribute(VendorName, Tag, unsigned(-1),
+ String, Override);
+ }
+ break;
+ // Note: AEABI_FEATURE_AND_BITS takes only unsigned values
+ case AArch64BuildAttributes::AEABI_FEATURE_AND_BITS:
+ switch (Tag) {
+ default: // allow emitting any attribute by number
+ OS << "\t.aeabi_attribute" << "\t" << Tag << ", " << Value;
+ // Keep the data structure consistent with the case of ELF emission
+ // (important for llvm-mc asm parsing)
+ AArch64TargetStreamer::emitAttribute(VendorName, Tag, Value, "",
+ Override);
+ break;
+ case AArch64BuildAttributes::TAG_FEATURE_BTI:
+ LLVM_FALLTHROUGH;
+ case AArch64BuildAttributes::TAG_FEATURE_GCS:
+ LLVM_FALLTHROUGH;
+ case AArch64BuildAttributes::TAG_FEATURE_PAC:
+ OS << "\t.aeabi_attribute" << "\t"
+ << AArch64BuildAttributes::getFeatureAndBitsTagsStr(Tag) << ", "
+ << Value;
+ AArch64TargetStreamer::emitAttribute(VendorName, Tag, Value, "",
+ Override);
+ break;
+ }
+ break;
+ // Note: AEABI_PAUTHABI takes only unsigned values
+ case AArch64BuildAttributes::AEABI_PAUTHABI:
+ switch (Tag) {
+ default: // allow emitting any attribute by number
+ OS << "\t.aeabi_attribute" << "\t" << Tag << ", " << Value;
+ // Keep the data structure consistent with the case of ELF emission
+ // (important for llvm-mc asm parsing)
+ AArch64TargetStreamer::emitAttribute(VendorName, Tag, Value, "",
+ Override);
+ break;
+ case AArch64BuildAttributes::TAG_PAUTH_PLATFORM:
+ LLVM_FALLTHROUGH;
+ case AArch64BuildAttributes::TAG_PAUTH_SCHEMA:
+ OS << "\t.aeabi_attribute" << "\t"
+ << AArch64BuildAttributes::getPauthABITagsStr(Tag) << ", " << Value;
+ AArch64TargetStreamer::emitAttribute(VendorName, Tag, Value, "",
+ Override);
+ break;
+ }
+ break;
+ }
+ OS << "\n";
+ }
+
+ void emitAtributesSubsection(
+ StringRef SubsectionName,
+ AArch64BuildAttributes::SubsectionOptional Optional,
+ AArch64BuildAttributes::SubsectionType ParameterType) override {
+ // The AArch64 build attributes assembly subsection header format:
+ // ".aeabi_subsection name, optional, parameter type"
+ // optional: required (0) optional (1)
+ // parameter type: uleb128 or ULEB128 (0) ntbs or NTBS (1)
+ unsigned SubsectionID =
AArch64BuildAttributes::getVendorID(SubsectionName);
+
+ assert((0 == Optional || 1 == Optional) &&
+ AArch64BuildAttributes::getSubsectionOptionalUnknownError().data());
+ assert((0 == ParameterType || 1 == ParameterType) &&
+ AArch64BuildAttributes::getSubsectionTypeUnknownError().data());
+
+ std::string SubsectionTag = ".aeabi_subsection";
+ StringRef OptionalStr = getOptionalStr(Optional);
+ StringRef ParameterStr = getTypeStr(ParameterType);
+
+ switch (SubsectionID) {
+ default: {
+ assert(0 && "Subsection error");
+ break;
+ }
+ case AArch64BuildAttributes::VENDOR_UNKNOWN: {
+ // Keep the data structure consistent with the case of ELF emission
+ // (important for llvm-mc asm parsing)
+ OS << "\t" << SubsectionTag << "\t" << SubsectionName << ", "
----------------
ostannard wrote:
This is the same in each case, so can be moved outside the `switch`, leaving
just the assertions here.
https://github.com/llvm/llvm-project/pull/118771
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