From 06f1a1aa5e63c0976c207e77233c5a9e71eb3fc9 Mon Sep 17 00:00:00 2001
From: Cesare Ferrari <cesare.ferrari@gmail.com>
Date: Mon, 6 Jan 2025 12:57:55 +0000
Subject: [PATCH] Add windows/arm64 support, ensure unsupported platforms see a
 compile error

---
 include/crill/bytewise_atomic_memcpy.h             | 4 +++-
 include/crill/impl/progressive_backoff_wait_impl.h | 6 +++++-
 include/crill/platform.h                           | 2 +-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/include/crill/bytewise_atomic_memcpy.h b/include/crill/bytewise_atomic_memcpy.h
index 449aaae..23ff378 100644
--- a/include/crill/bytewise_atomic_memcpy.h
+++ b/include/crill/bytewise_atomic_memcpy.h
@@ -42,11 +42,12 @@ namespace crill {
 
         for (std::size_t i = 0; i < count; ++i) {
               #if __cpp_lib_atomic_ref
-                dest_bytes[i] = std::atomic_ref<char>(src_bytes[i]).load(std::memory_order_relaxed);
+                dest_bytes[i] = std::atomic_ref<const char>(src_bytes[i]).load(std::memory_order_relaxed);
               #elif CRILL_CLANG || CRILL_GCC
                 dest_bytes[i] = __atomic_load_n(src_bytes + i, __ATOMIC_RELAXED);
               #else
                 // No atomic_ref or equivalent functionality available on this platform!
+                #error "Platform not supported!"
               #endif
         }
 
@@ -81,6 +82,7 @@ namespace crill {
             __atomic_store_n(dest_bytes + i, src_bytes[i], __ATOMIC_RELAXED);
           #else
             // No atomic_ref or equivalent functionality available on this platform!
+            #error "Platform not supported!"
           #endif
         }
 
diff --git a/include/crill/impl/progressive_backoff_wait_impl.h b/include/crill/impl/progressive_backoff_wait_impl.h
index 80d17d9..35681af 100644
--- a/include/crill/impl/progressive_backoff_wait_impl.h
+++ b/include/crill/impl/progressive_backoff_wait_impl.h
@@ -11,7 +11,11 @@
 #if CRILL_INTEL
   #include <emmintrin.h>
 #elif CRILL_ARM_64BIT
-  #include <arm_acle.h>
+  #ifdef _WIN32
+    #include <intrin.h>
+  #else
+    #include <arm_acle.h>
+  #endif
 #endif
 
 namespace crill::impl
diff --git a/include/crill/platform.h b/include/crill/platform.h
index a25fb99..9a9ca51 100644
--- a/include/crill/platform.h
+++ b/include/crill/platform.h
@@ -11,7 +11,7 @@
   #define CRILL_ARM 1
   #define CRILL_32BIT 1
   #define CRILL_ARM_32BIT 1
-#elif defined (__arm64__)
+#elif defined (__arm64__) || defined (_M_ARM64)
   #define CRILL_ARM 1
   #define CRILL_64BIT 1
   #define CRILL_ARM_64BIT 1