================
@@ -1296,6 +1372,124 @@ void SystemZAsmPrinter::emitPPA1(MCSymbol *FnEndSym) {
4);
}
+void SystemZAsmPrinter::emitStartOfAsmFile(Module &M) {
+ if (TM.getTargetTriple().isOSzOS())
+ emitPPA2(M);
+ AsmPrinter::emitStartOfAsmFile(M);
+}
+
+void SystemZAsmPrinter::emitPPA2(Module &M) {
+ OutStreamer->pushSection();
+ OutStreamer->switchSection(getObjFileLowering().getPPA2Section());
+ MCContext &OutContext = OutStreamer->getContext();
+ // Make CELQSTRT symbol.
+ const char *StartSymbolName = "CELQSTRT";
+ MCSymbol *CELQSTRT = OutContext.getOrCreateSymbol(StartSymbolName);
+
+ // Create symbol and assign to class field for use in PPA1.
+ PPA2Sym = OutContext.createTempSymbol("PPA2", false);
+ MCSymbol *DateVersionSym = OutContext.createTempSymbol("DVS", false);
+
+ std::time_t Time = TranslationTime;
+ SmallString<15> CompilationTime; // 14 + null
+ raw_svector_ostream O(CompilationTime);
+ O << formatv("{0:%Y%m%d%H%M%S}", llvm::sys::toUtcTime(Time));
+
+ uint32_t ProductVersion = getProductVersion(M),
+ ProductRelease = getProductRelease(M),
+ ProductPatch = getProductPatch(M);
+
+ SmallString<7> Version; // 6 + null
+ raw_svector_ostream ostr(Version);
+ ostr << formatv("{0,0-2:d}{1,0-2:d}{2,0-2:d}", ProductVersion,
ProductRelease,
+ ProductPatch);
+
+ // Drop 0 during conversion.
+ SmallString<sizeof(CompilationTime) - 1> CompilationTimeStr;
+ SmallString<sizeof(Version) - 1> VersionStr;
+
+ ConverterEBCDIC::convertToEBCDIC(CompilationTime, CompilationTimeStr);
+ ConverterEBCDIC::convertToEBCDIC(Version, VersionStr);
+
+ enum class PPA2MemberId : uint8_t {
+ // See z/OS Language Environment Vendor Interfaces v2r5, p.23, for
+ // complete list. Only the C runtime is supported by this backend.
+ LE_C_Runtime = 3,
+ };
+ enum class PPA2MemberSubId : uint8_t {
+ // List of languages using the LE C runtime implementation.
+ C = 0x00,
+ CXX = 0x01,
+ Swift = 0x03,
+ Go = 0x60,
+ LLVMBasedLang = 0xe7,
+ };
+ // PPA2 Flags
+ enum class PPA2Flags : uint8_t {
+ CompileForBinaryFloatingPoint = 0x80,
+ CompiledWithXPLink = 0x01,
+ CompiledUnitASCII = 0x04,
+ HasServiceInfo = 0x20,
+ };
+
+ PPA2MemberSubId MemberSubId = PPA2MemberSubId::LLVMBasedLang;
+ if (auto *MD = M.getModuleFlag("zos_cu_language")) {
+ StringRef Language = cast<MDString>(MD)->getString();
+ MemberSubId = StringSwitch<PPA2MemberSubId>(Language)
+ .Case("C", PPA2MemberSubId::C)
+ .Case("CXX", PPA2MemberSubId::CXX)
+ .Case("Swift", PPA2MemberSubId::Swift)
+ .Case("Go", PPA2MemberSubId::Go)
+ .Default(PPA2MemberSubId::LLVMBasedLang);
+ }
+
+ // Emit PPA2 section.
+ OutStreamer->emitLabel(PPA2Sym);
+ OutStreamer->emitInt8(static_cast<uint8_t>(PPA2MemberId::LE_C_Runtime));
+ OutStreamer->emitInt8(static_cast<uint8_t>(MemberSubId));
+ OutStreamer->emitInt8(0x22); // Member defined, c370_plist+c370_env
+ OutStreamer->emitInt8(0x04); // Control level 4 (XPLink)
+ OutStreamer->emitAbsoluteSymbolDiff(CELQSTRT, PPA2Sym, 4);
+ OutStreamer->emitInt32(0x00000000);
+ OutStreamer->emitAbsoluteSymbolDiff(DateVersionSym, PPA2Sym, 4);
+ OutStreamer->emitInt32(
+ 0x00000000); // Offset to main entry point, always 0 (so says TR).
+ uint8_t Flgs =
static_cast<uint8_t>(PPA2Flags::CompileForBinaryFloatingPoint);
+ Flgs |= static_cast<uint8_t>(PPA2Flags::CompiledWithXPLink);
+
+ if (auto *MD = M.getModuleFlag("zos_le_char_mode")) {
----------------
ysyeda wrote:
This is now set in clang.
https://github.com/llvm/llvm-project/pull/68926
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