# --- T2-COPYRIGHT-BEGIN ---
# t2/package/*/gperftools/alpha.patch.alpha
# Copyright (C) 2026 The T2 SDE Project
# SPDX-License-Identifier: GPL-2.0 or patched project license
# --- T2-COPYRIGHT-END ---

--- a/src/base/basictypes.h
+++ b/src/base/basictypes.h
@@ -168,6 +168,8 @@ inline void bit_store(Dest *dest, const
 #   define CACHELINE_ALIGNED __attribute__((aligned(64)))
 # elif defined(__sparcv9) || defined(__sparcv9__)
 #   define CACHELINE_ALIGNED __attribute__((aligned(64)))
+# elif defined(__alpha__)
+#   define CACHELINE_ALIGNED __attribute__((aligned(64)))
 # else
 #   error Could not determine cache line length - unknown architecture
 # endif
--- a/src/getpc-inl.h
+++ b/src/getpc-inl.h
@@ -341,9 +341,23 @@ struct get_79f33851<U, P, void_t<decltyp
   }
 };
 
+// Linux/alpha
+template <class U, class P, class = void>
+struct get_alpha_sc_pc : public P {
+};
+template <class U, class P>
+struct get_alpha_sc_pc<U, P, void_t<decltype(((U*){})->uc_mcontext.sc_pc)>> : public P {
+  static void* Get(const U* uc) {
+    // Linux/alpha
+    return (void*)(uc->uc_mcontext.sc_pc);
+  }
+};
+
 inline void* RawUCToPC(const ucontext_t* uc) {
+  // Linux/alpha
+  using g_alpha_sc_pc = get_alpha_sc_pc<ucontext_t, Empty>;
   // OpenBSD/x86_64
-  using g_79f33851 = get_79f33851<ucontext_t, Empty>;
+  using g_79f33851 = get_79f33851<ucontext_t, g_alpha_sc_pc>;
   // OpenBSD/i386
   using g_3baa113a = get_3baa113a<ucontext_t, g_79f33851>;
   // OS X (arm64)