Transfer files from RAD repository

src/gpu_ib/endian.cpp

@@ -0,0 +1,79 @@
+/******************************************************************************
+ * Copyright (c) 2024 Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *****************************************************************************/
+
+#include "endian.hpp"
+
+namespace rocshmem {
+
+template <typename T>
+__device__ void swap_endian_store(T *dst, const T val) {
+  typedef union U {
+    T val;
+    uint8_t bytes[sizeof(T)];
+  } union_type;
+  union_type src;
+  union_type dst_tmp;
+
+  src.val = val;
+  std::reverse_copy(src.bytes, src.bytes + sizeof(T), dst_tmp.bytes);
+  *dst = dst_tmp.val;
+}
+
+template <>
+__device__ void swap_endian_store(uint64_t *dst, const uint64_t val) {
+  uint64_t new_val = ((val << 8) & 0xFF00FF00FF00FF00ULL) |
+                     ((val >> 8) & 0x00FF00FF00FF00FFULL);
+
+  new_val = ((new_val << 16) & 0xFFFF0000FFFF0000ULL) |
+            ((new_val >> 16) & 0x0000FFFF0000FFFFULL);
+
+  *dst = (new_val << 32) | (new_val >> 32);
+}
+
+template <>
+__device__ void swap_endian_store(int64_t *dst, const int64_t val) {
+  swap_endian_store(reinterpret_cast<uint64_t *>(dst), (const uint64_t)val);
+}
+
+template <>
+__device__ void swap_endian_store(uint32_t *dst, const uint32_t val) {
+  uint32_t new_val = ((val << 8) & 0xFF00FF00) | ((val >> 8) & 0xFF00FF);
+
+  *dst = (new_val << 16) | (new_val >> 16);
+}
+
+template <>
+__device__ void swap_endian_store(int32_t *dst, const int32_t val) {
+  swap_endian_store(reinterpret_cast<uint32_t *>(dst), (const uint32_t)val);
+}
+
+template <>
+__device__ void swap_endian_store(uint16_t *dst, const uint16_t val) {
+  *dst = ((val << 8) & 0xFF00) | ((val >> 8) & 0x00FF);
+}
+
+template <>
+__device__ void swap_endian_store(int16_t *dst, const int16_t val) {
+  swap_endian_store(reinterpret_cast<uint16_t *>(dst), (const uint16_t)val);
+}
+
+}  // namespace rocshmem