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mach_o/Platform.cpp dyld-1340 dyld-1235.2
--- dyld/dyld-1340/mach_o/Platform.cpp
+++ dyld/dyld-1235.2/mach_o/Platform.cpp
@@ -92,8 +92,6 @@
 //
 
 constinit const Platform::Epoch Platform::Epoch::invalid(0);
-constinit const Platform::Epoch Platform::Epoch::fall2012(2012);
-constinit const Platform::Epoch Platform::Epoch::fall2013(2013);
 constinit const Platform::Epoch Platform::Epoch::fall2015(2015);
 constinit const Platform::Epoch Platform::Epoch::fall2016(2016);
 constinit const Platform::Epoch Platform::Epoch::fall2017(2017);
@@ -107,8 +105,6 @@
 constinit const Platform::Epoch Platform::Epoch::fall2023(2023);
 constinit const Platform::Epoch Platform::Epoch::spring2024(2024, true);
 constinit const Platform::Epoch Platform::Epoch::fall2024(2024);
-constinit const Platform::Epoch Platform::Epoch::spring2025(2025, true);
-constinit const Platform::Epoch Platform::Epoch::fall2025(2025);
 
 
 
@@ -125,20 +121,22 @@
 class VIS_HIDDEN PlatformInfo
 {
 public:
-    consteval PlatformInfo(uint32_t v, CString nm, bool isSim, bool fp, bool alignedIn2025, uint16_t year, const PlatformInfo* info, CString altName = {})
-        : basePlatformInfo(info), name(nm), altName(altName), value(v), baseYear(year),
-          isSimulator(isSim), supportsFairPlayEncryption(fp), wasAlignedIn2025(alignedIn2025) { }
-
-    const PlatformInfo* basePlatformInfo;
+    consteval PlatformInfo(uint32_t v, CString nm, bool isSim, bool fp, uint16_t year, CString altName = {})
+                             : value(v), name(nm), altName(altName), isSimulator(isSim),supportsFairPlayEncryption(fp), baseYear(year) { }
+
+    uint32_t            value;
     CString             name;
     CString             altName;
-    uint32_t            value;
-    uint16_t            baseYear;    // year 1.0 shipped
     bool                isSimulator;
     bool                isExclaveCore=false;
     bool                isExclaveKit=false;
     bool                supportsFairPlayEncryption;
-    bool                wasAlignedIn2025;           // was this platform bumped to version 26.0 in fall 2025?
+    uint16_t            baseYear;    // year 1.0 shipped
+
+    // Epoch is private to Platform and PlatformInfo, so convert to year/spring of use by subclasses
+    Version32 versionForEpoch(Platform::Epoch e) const {
+        return versionForYear(e.year(), e.isSpring());
+    }
 
     // Epoch is private to Platform and PlatformInfo, so convert to year/spring of use by subclasses
     Platform::Epoch epochForVersion(Version32 vers) const {
@@ -148,6 +146,9 @@
         return Platform::Epoch(year, spring);
     }
 
+    virtual Version32 versionForYear(uint16_t year, bool spring) const {
+        return majorVersionFromBaseYear(year, spring);
+    }
     virtual void yearForVersion(Version32 vers, uint16_t& year, bool& spring) const {
         yearForMajorVersion(vers, year, spring);
     }
@@ -161,23 +162,32 @@
     friend class Platform;
     static constinit const PlatformInfo* knownPlatformInfos[];
 
+    // version bumped by 1.0 each Fall, started at baseYear
+    Version32 majorVersionFromBaseYear(uint16_t year, bool spring) const {
+        unsigned major = year - baseYear;
+        uint16_t minor = 0;
+        if ( spring ) {
+            --major;
+            minor = minorVersionForSpring(major);
+        }
+        return Version32(major, minor);
+    }
+
+    // version bumped by 0.1 each Fall
+    Version32 tenVersionFromBaseYear(uint16_t year, bool spring, uint16_t tenBaseYear) const {
+        // version is 10.xx
+        uint16_t subVersion = year - tenBaseYear;
+        uint8_t  dot        = 0;
+        if ( spring ) {
+            --subVersion;
+            dot = 4;
+        }
+        return Version32(10, subVersion, dot);
+    }
+
     void yearForMajorVersion(Version32 vers, uint16_t& year, bool& spring) const {
         // version is >= 11.0
-
-        // In 2025, many platform aligned on version 26
-        if ( wasAlignedIn2025 ) {
-            if ( vers.major() >= 26 ) {
-                year = 2000 + (vers.major() - 1);
-            } else {
-                // clamp anything in the gap to 26
-                year = baseYear + vers.major();
-                if ( year > 2026 )
-                    year = 2026;
-            }
-        } else {
-            year = baseYear + vers.major();
-        }
-
+        year = baseYear + vers.major();
         spring = (vers.minor() >= minorVersionForSpring(vers.major()));
         // Say the 2023 fall release has the year 2023, then we want the following spring release,
         // what availability calls 2023(e) to actually be in calendar year 2024
@@ -198,7 +208,14 @@
 class VIS_HIDDEN PlatformInfo_macOS : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_macOS() : PlatformInfo(PLATFORM_MACOS, "macOS", false, false, true, 2009, &PlatformInfo_macOS::singleton, "macOSX") { }
+    consteval PlatformInfo_macOS() : PlatformInfo(PLATFORM_MACOS, "macOS", false, false, 2009, "macOSX") { }
+
+    Version32 versionForYear(uint16_t year, bool spring) const override {
+        if ( (year > 2020) || ((year ==2020) && !spring) )
+            return majorVersionFromBaseYear(year, spring);       // 2020 - 2009 -> 11.0
+        else
+            return tenVersionFromBaseYear(year, spring, 2004);   // 2019 - 2004 -> 10.15
+    }
 
     void yearForVersion(Version32 vers, uint16_t& year, bool& spring) const override {
         if ( vers >= Version32(11,0) )
@@ -219,8 +236,7 @@
 
     static const PlatformInfo_macOS singleton;
 protected:
-    consteval PlatformInfo_macOS(uint32_t v, CString nm, bool isSim, const PlatformInfo* info = &PlatformInfo_macOS::singleton) 
-                                    : PlatformInfo(v, nm, isSim, false, true, 2009, info) { }
+    consteval PlatformInfo_macOS(uint32_t v, CString nm, bool isSim) : PlatformInfo(v, nm, isSim, false, 2009) { }
 };
 const PlatformInfo_macOS        PlatformInfo_macOS::singleton;
 
@@ -228,12 +244,11 @@
 class VIS_HIDDEN PlatformInfo_iOS : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_iOS() : PlatformInfo(PLATFORM_IOS, "iOS", false, true, true, 2006, &PlatformInfo_iOS::singleton) { }
+    consteval PlatformInfo_iOS() : PlatformInfo(PLATFORM_IOS, "iOS", false, true, 2006) { }
 
     static const PlatformInfo_iOS singleton;
 protected:
-    consteval PlatformInfo_iOS(uint32_t v, CString nm, bool isSim, const PlatformInfo* info = &PlatformInfo_iOS::singleton, CString altName = {})
-                                : PlatformInfo(v, nm, isSim, !isSim, true, 2006, info, altName) { }
+    consteval PlatformInfo_iOS(uint32_t v, CString nm, bool isSim, CString altName = {}) : PlatformInfo(v, nm, isSim, !isSim, 2006, altName) { }
 };
 const PlatformInfo_iOS      PlatformInfo_iOS::singleton;
 
@@ -253,21 +268,20 @@
 class VIS_HIDDEN PlatformInfo_tvOS : public PlatformInfo_iOS
 {
 public:
-    consteval PlatformInfo_tvOS() : PlatformInfo_iOS(PLATFORM_TVOS, "tvOS", false, &PlatformInfo_tvOS::singleton) { }
+    consteval PlatformInfo_tvOS() : PlatformInfo_iOS(PLATFORM_TVOS, "tvOS", false) { }
 
     static const PlatformInfo_tvOS  singleton;
 protected:
-    consteval PlatformInfo_tvOS(uint32_t v, CString nm, bool isSim, const PlatformInfo* info = &PlatformInfo_tvOS::singleton)
-                                : PlatformInfo_iOS(v, nm, isSim, info) { }
+    consteval PlatformInfo_tvOS(uint32_t v, CString nm, bool isSim) : PlatformInfo_iOS(v, nm, isSim) { }
 };
 const PlatformInfo_tvOS      PlatformInfo_tvOS::singleton;
 
 
-// tvOS_simulator uses same versioning as tvOS
-class VIS_HIDDEN PlatformInfo_tvOS_simulator : public PlatformInfo_tvOS
-{
-public:
-    consteval PlatformInfo_tvOS_simulator() : PlatformInfo_tvOS(PLATFORM_TVOSSIMULATOR, "tvOS-simulator", true) { }
+// tvOS_simulator uses same versioning as iOS
+class VIS_HIDDEN PlatformInfo_tvOS_simulator : public PlatformInfo_iOS
+{
+public:
+    consteval PlatformInfo_tvOS_simulator() : PlatformInfo_iOS(PLATFORM_TVOSSIMULATOR, "tvOS-simulator", true) { }
 
     static const PlatformInfo_tvOS_simulator    singleton;
 };
@@ -280,7 +294,7 @@
 class VIS_HIDDEN PlatformInfo_macCatalyst : public PlatformInfo_iOS
 {
 public:
-    consteval PlatformInfo_macCatalyst() : PlatformInfo_iOS(PLATFORM_MACCATALYST, "macCatalyst", false, &PlatformInfo_iOS::singleton, "Mac Catalyst") {
+    consteval PlatformInfo_macCatalyst() : PlatformInfo_iOS(PLATFORM_MACCATALYST, "macCatalyst", false, "Mac Catalyst") {
         supportsFairPlayEncryption = false;
     }
 
@@ -301,12 +315,11 @@
 class VIS_HIDDEN PlatformInfo_watchOS : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_watchOS() : PlatformInfo(PLATFORM_WATCHOS, "watchOS", false, true, true, 2013, &PlatformInfo_watchOS::singleton) { }
+    consteval PlatformInfo_watchOS() : PlatformInfo(PLATFORM_WATCHOS, "watchOS", false, true, 2013) { }
 
     static const PlatformInfo_watchOS   singleton;
 protected:
-    consteval PlatformInfo_watchOS(uint32_t v, CString nm, bool isSim, const PlatformInfo* info = &PlatformInfo_watchOS::singleton)
-                                    : PlatformInfo(v, nm, isSim, !isSim, true, 2013, info) { }
+    consteval PlatformInfo_watchOS(uint32_t v, CString nm, bool isSim) : PlatformInfo(v, nm, isSim, !isSim, 2013) { }
 };
 const PlatformInfo_watchOS    PlatformInfo_watchOS::singleton;
 
@@ -325,7 +338,7 @@
 class VIS_HIDDEN PlatformInfo_bridgeOS : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_bridgeOS() : PlatformInfo(PLATFORM_BRIDGEOS, "bridgeOS", false, false, false, 2015, &PlatformInfo_bridgeOS::singleton) { }
+    consteval PlatformInfo_bridgeOS() : PlatformInfo(PLATFORM_BRIDGEOS, "bridgeOS", false, false, 2015) { }
 
     uint16_t minorVersionForSpring(uint16_t major) const override {
         // The past 2 releases have been 7.3 and 8.3, so assume that pattern for those releases.
@@ -339,7 +352,7 @@
 
     static const PlatformInfo_bridgeOS singleton;
 protected:
-    consteval PlatformInfo_bridgeOS(uint32_t v, CString nm) : PlatformInfo(v, nm, false, false, false, 2015, &PlatformInfo_bridgeOS::singleton) { }
+    consteval PlatformInfo_bridgeOS(uint32_t v, CString nm) : PlatformInfo(v, nm, false, false, 2015) { }
 };
 const PlatformInfo_bridgeOS         PlatformInfo_bridgeOS::singleton;
 
@@ -348,7 +361,7 @@
 class VIS_HIDDEN PlatformInfo_driverKit : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_driverKit() : PlatformInfo(PLATFORM_DRIVERKIT, "driverKit", false, true, false, 2000, &PlatformInfo_driverKit::singleton) { }
+    consteval PlatformInfo_driverKit() : PlatformInfo(PLATFORM_DRIVERKIT, "driverKit", false, true, 2000) { }
 
     static const PlatformInfo_driverKit singleton;
 };
@@ -359,8 +372,11 @@
 class VIS_HIDDEN PlatformInfo_firmware : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_firmware() : PlatformInfo(PLATFORM_FIRMWARE, "firmware", false, false, false, 0, &PlatformInfo_firmware::singleton, "free standing") { }
-
+    consteval PlatformInfo_firmware() : PlatformInfo(PLATFORM_FIRMWARE, "firmware", false, false, 0, "free standing") { }
+
+    Version32 versionForYear(uint16_t year, bool spring) const override {
+        return Version32(1,0);
+    }
     void yearForVersion(Version32 vers, uint16_t& year, bool& spring) const override {
         year = 2020;
         spring = false;
@@ -375,8 +391,11 @@
 class VIS_HIDDEN PlatformInfo_sepOS : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_sepOS() : PlatformInfo(PLATFORM_SEPOS, "sepOS", false, false, false, 0, &PlatformInfo_sepOS::singleton) { }
-
+    consteval PlatformInfo_sepOS() : PlatformInfo(PLATFORM_SEPOS, "sepOS", false, false, 0) { }
+
+    Version32 versionForYear(uint16_t year, bool spring) const override {
+        return Version32(1,0);
+    }
     void yearForVersion(Version32 vers, uint16_t& year, bool& spring) const override {
         year = 2020;
         spring = false;
@@ -390,7 +409,7 @@
 class VIS_HIDDEN PlatformInfo_macOS_exclaveCore : public PlatformInfo_macOS
 {
 public:
-    consteval PlatformInfo_macOS_exclaveCore() : PlatformInfo_macOS(PLATFORM_MACOS_EXCLAVECORE, "macOS-exclaveCore", false, &PlatformInfo_macOS_exclaveCore::singleton)
+    consteval PlatformInfo_macOS_exclaveCore() : PlatformInfo_macOS(PLATFORM_MACOS_EXCLAVECORE, "macOS-exclaveCore", false)
     {
         isExclaveCore = true;
     }
@@ -403,7 +422,7 @@
 class VIS_HIDDEN PlatformInfo_macOS_exclaveKit : public PlatformInfo_macOS
 {
 public:
-    consteval PlatformInfo_macOS_exclaveKit() : PlatformInfo_macOS(PLATFORM_MACOS_EXCLAVEKIT, "macOS-exclaveKit", false, &PlatformInfo_macOS_exclaveKit::singleton)
+    consteval PlatformInfo_macOS_exclaveKit() : PlatformInfo_macOS(PLATFORM_MACOS_EXCLAVEKIT, "macOS-exclaveKit", false)
     {
         isExclaveKit = true;
     }
@@ -417,7 +436,7 @@
 class VIS_HIDDEN PlatformInfo_iOS_exclaveCore : public PlatformInfo_iOS
 {
 public:
-    consteval PlatformInfo_iOS_exclaveCore() : PlatformInfo_iOS(PLATFORM_IOS_EXCLAVECORE, "iOS-exclaveCore", false, &PlatformInfo_iOS_exclaveCore::singleton)
+    consteval PlatformInfo_iOS_exclaveCore() : PlatformInfo_iOS(PLATFORM_IOS_EXCLAVECORE, "iOS-exclaveCore", false)
     {
         supportsFairPlayEncryption = false;
         isExclaveCore = true;
@@ -431,7 +450,7 @@
 class VIS_HIDDEN PlatformInfo_iOS_exclaveKit : public PlatformInfo_iOS
 {
 public:
-    consteval PlatformInfo_iOS_exclaveKit() : PlatformInfo_iOS(PLATFORM_IOS_EXCLAVEKIT, "iOS-exclaveKit", false, &PlatformInfo_iOS_exclaveKit::singleton)
+    consteval PlatformInfo_iOS_exclaveKit() : PlatformInfo_iOS(PLATFORM_IOS_EXCLAVEKIT, "iOS-exclaveKit", false)
     {
         supportsFairPlayEncryption = false;
         isExclaveKit = true;
@@ -446,7 +465,7 @@
 class VIS_HIDDEN PlatformInfo_tvOS_exclaveCore : public PlatformInfo_tvOS
 {
 public:
-    consteval PlatformInfo_tvOS_exclaveCore() : PlatformInfo_tvOS(PLATFORM_TVOS_EXCLAVECORE, "tvOS-exclaveCore", false, &PlatformInfo_tvOS_exclaveCore::singleton)
+    consteval PlatformInfo_tvOS_exclaveCore() : PlatformInfo_tvOS(PLATFORM_TVOS_EXCLAVECORE, "tvOS-exclaveCore", false)
     {
         supportsFairPlayEncryption = false;
         isExclaveCore = true;
@@ -460,7 +479,7 @@
 class VIS_HIDDEN PlatformInfo_tvOS_exclaveKit : public PlatformInfo_tvOS
 {
 public:
-    consteval PlatformInfo_tvOS_exclaveKit() : PlatformInfo_tvOS(PLATFORM_TVOS_EXCLAVEKIT, "tvOS-exclaveKit", false, &PlatformInfo_tvOS_exclaveKit::singleton)
+    consteval PlatformInfo_tvOS_exclaveKit() : PlatformInfo_tvOS(PLATFORM_TVOS_EXCLAVEKIT, "tvOS-exclaveKit", false)
     {
         supportsFairPlayEncryption = false;
         isExclaveKit = true;
@@ -475,7 +494,7 @@
 class VIS_HIDDEN PlatformInfo_watchOS_exclaveCore : public PlatformInfo_watchOS
 {
 public:
-    consteval PlatformInfo_watchOS_exclaveCore() : PlatformInfo_watchOS(PLATFORM_WATCHOS_EXCLAVECORE, "watchOS-exclaveCore", false, &PlatformInfo_watchOS_exclaveCore::singleton)
+    consteval PlatformInfo_watchOS_exclaveCore() : PlatformInfo_watchOS(PLATFORM_WATCHOS_EXCLAVECORE, "watchOS-exclaveCore", false)
     {
         supportsFairPlayEncryption = false;
         isExclaveCore = true;
@@ -489,7 +508,7 @@
 class VIS_HIDDEN PlatformInfo_watchOS_exclaveKit : public PlatformInfo_watchOS
 {
 public:
-    consteval PlatformInfo_watchOS_exclaveKit() : PlatformInfo_watchOS(PLATFORM_WATCHOS_EXCLAVEKIT, "watchOS-exclaveKit", false, &PlatformInfo_watchOS_exclaveKit::singleton)
+    consteval PlatformInfo_watchOS_exclaveKit() : PlatformInfo_watchOS(PLATFORM_WATCHOS_EXCLAVEKIT, "watchOS-exclaveKit", false)
     {
         supportsFairPlayEncryption = false;
         isExclaveKit = true;
@@ -502,7 +521,7 @@
 class VIS_HIDDEN PlatformInfo_visionOS : public PlatformInfo
 {
 public:
-    consteval PlatformInfo_visionOS() : PlatformInfo(PLATFORM_VISIONOS, "visionOS", false, true, true, 2022, &PlatformInfo_visionOS::singleton, "xrOS") {}
+    consteval PlatformInfo_visionOS() : PlatformInfo(PLATFORM_VISIONOS, "visionOS", false, true, 2022, "xrOS") {}
 
     uint16_t minorVersionForSpring(uint16_t major) const override {
         // The first spring release is 1.1
@@ -516,14 +535,14 @@
 
     static const PlatformInfo_visionOS singleton;
 protected:
-    consteval PlatformInfo_visionOS(uint32_t v, CString nm, bool isSim, const PlatformInfo* info = &PlatformInfo_visionOS::singleton, CString altName = {}) : PlatformInfo(v, nm, isSim, !isSim, true, 2022, info, altName) { }
+    consteval PlatformInfo_visionOS(uint32_t v, CString nm, bool isSim, CString altName = {}) : PlatformInfo(v, nm, isSim, !isSim, 2022, altName) { }
 };
 const PlatformInfo_visionOS          PlatformInfo_visionOS::singleton;
 
 class VIS_HIDDEN PlatformInfo_visionOS_simulator : public PlatformInfo_visionOS
 {
 public:
-    consteval PlatformInfo_visionOS_simulator() : PlatformInfo_visionOS(PLATFORM_VISIONOSSIMULATOR, "visionOS-simulator", true, &PlatformInfo_visionOS::singleton, "xrOS-simulator") { }
+    consteval PlatformInfo_visionOS_simulator() : PlatformInfo_visionOS(PLATFORM_VISIONOSSIMULATOR, "visionOS-simulator", true, "xrOS-simulator") { }
 
     static const PlatformInfo_visionOS_simulator    singleton;
 };
@@ -532,7 +551,7 @@
 class VIS_HIDDEN PlatformInfo_visionOS_exclaveCore : public PlatformInfo_visionOS
 {
 public:
-    consteval PlatformInfo_visionOS_exclaveCore() : PlatformInfo_visionOS(PLATFORM_VISIONOS_EXCLAVECORE, "visionOS-exclaveCore", false, &PlatformInfo_visionOS_exclaveCore::singleton, "xrOS-exclaveCore")
+    consteval PlatformInfo_visionOS_exclaveCore() : PlatformInfo_visionOS(PLATFORM_VISIONOS_EXCLAVECORE, "visionOS-exclaveCore", false, "xrOS-exclaveCore")
     {
         supportsFairPlayEncryption = false;
         isExclaveCore = true;
@@ -545,7 +564,7 @@
 class VIS_HIDDEN PlatformInfo_visionOS_exclaveKit : public PlatformInfo_visionOS
 {
 public:
-    consteval PlatformInfo_visionOS_exclaveKit() : PlatformInfo_visionOS(PLATFORM_VISIONOS_EXCLAVEKIT, "visionOS-exclaveKit", false, &PlatformInfo_visionOS_exclaveKit::singleton, "xrOS-exclaveKit")
+    consteval PlatformInfo_visionOS_exclaveKit() : PlatformInfo_visionOS(PLATFORM_VISIONOS_EXCLAVEKIT, "visionOS-exclaveKit", false, "xrOS-exclaveKit")
     {
         supportsFairPlayEncryption = false;
         isExclaveKit = true;
@@ -595,8 +614,9 @@
 //
 
 
-Platform::Platform(uint32_t platformNumber) : _info(nullptr), _value(0)
-{
+Platform::Platform(uint32_t platformNumber)
+{
+    _info = nullptr;
     for (const PlatformInfo* p : PlatformInfo::knownPlatformInfos) {
         assert(p->value != 0 && "PlatformInfo value uninitialized, this might be a problem with C++ static initializers order");
         if ( p->value == platformNumber ) {
@@ -604,7 +624,6 @@
             return;
         }
     }
-    _value = platformNumber;
 }
 
 Platform Platform::byName(std::string_view name) {
@@ -647,27 +666,14 @@
 
 bool Platform::empty() const
 {
-    return (_info == nullptr) && _value == 0;
+    return (_info == nullptr);
 }
 
 CString Platform::name() const
 {
-    if ( _info == nullptr ) {
-        if ( _value != 0 )
-            return "future";
+    if ( _info == nullptr )
         return "unknown";
-    }
     return _info->name;
-}
-
-Platform Platform::basePlatform() const
-{
-    if ( _info == nullptr ) {
-        if ( _value != 0 )
-            return *this;
-        return Platform();
-    }
-    return Platform(*(_info->basePlatformInfo));
 }
 
 bool Platform::isSimulator() const
@@ -714,25 +720,9 @@
     return false;
 }
 
-CString Platform::libSystemDir() const
-{
-    if ( *this == Platform::sepOS )
-        return "";
-    if ( *this == Platform::firmware )
-        return "";
-    if ( isExclaveCore() )
-        return "";
-
-    if ( *this == Platform::driverKit )
-        return "/System/DriverKit/usr/lib/system/";
-    if ( isExclaveKit() )
-        return "/System/ExclaveKit/usr/lib/system/";
-    return "/usr/lib/system/";
-}
-
 uint32_t Platform::value() const
 {
-    return _info ? _info->value : _value;
+    return _info ? _info->value : 0;
 }
 
 Platform::Epoch Platform::epoch(Version32 v) const
@@ -899,20 +889,6 @@
     if ( (vendor == nullptr) || (osVers == nullptr) )
         return Error("missing dashes in target triple '%s'", triple.c_str());
 
-
-    // also return architecture from triple
-    outArch = Architecture::byName(arch);
-    if ( outArch == Architecture() )
-        return Error("unknown architecture in target triple '%s'", triple.c_str());
-
-    // firmware uses triples like "thumbv7m-apple-unknown-macho"
-    if ( strcmp(osVers, "unknown") == 0 ) {
-        this->platform = Platform::firmware;
-        this->minOS    = Version32(0,0);
-        this->sdk      = Version32(0,0);
-        return Error::none();
-    }
-
     // split osVersion into osName and minOS version
     const size_t osVersLen = strlen(osVers);
     char osName[triple.size()+1];
@@ -926,10 +902,17 @@
             break;
         }
     }
+    if ( strlen(minOSVers) == 0 )
+        return Error("missing OS version in target triple '%s'", triple.c_str());
 
     //  macosx is historical name
     if ( strcmp(osName, "macosx") == 0 )
         strlcpy(osName, "macos", sizeof(osName));
+
+    // also return architecture from triple
+    outArch = Architecture::byName(arch);
+    if ( outArch == Architecture() )
+        return Error("unknown architecture in target triple '%s'", triple.c_str());
 
     // Apple sub-platforms are fourth part of triple, but need to be added to OS name to make platform name
     // e.g. "arm64-apple-tvos16.0-simulator" --> "tvos-simulator"
@@ -938,16 +921,8 @@
         strlcat(osName, env, sizeof(osName));
     }
     this->platform = Platform::byName(osName);
-
-    // EFIShell
-    if ( this->platform.empty() && CString(osName) == "windows-macho" )
-        this->platform = Platform::firmware;
-
     if ( this->platform.empty() )
         return Error("unknown OS in target triple '%s'", triple.c_str());
-
-    if ( (strlen(minOSVers) == 0) && (this->platform != Platform::firmware) )
-        return Error("missing OS version in target triple '%s'", triple.c_str());
 
     // get minOS from version trailing OS name in triple
     if (Error err = Version32::fromString(minOSVers, this->minOS))