Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 355 insertions, 0 deletions

diff --git a/src/vppinfra/memcpy_sse3.h b/src/vppinfra/memcpy_sse3.h
new file mode 100644
index 00000000000..4fc48c86c8b
--- /dev/null
+++ b/src/vppinfra/memcpy_sse3.h
@@ -0,0 +1,355 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef included_clib_memcpy_sse3_h
+#define included_clib_memcpy_sse3_h
+
+#include <stdint.h>
+#include <x86intrin.h>
+
+typedef u8 u8x16u __attribute__ ((vector_size (16), aligned (1)));
+typedef u8 u8x32u __attribute__ ((vector_size (32), aligned (1)));
+
+static inline void
+clib_mov16 (u8 * dst, const u8 * src)
+{
+  *(u8x16u *) dst = *(u8x16u *) src;
+}
+
+static inline void
+clib_mov32 (u8 * dst, const u8 * src)
+{
+  *(u8x32u *) dst = *(u8x32u *) src;
+}
+
+static inline void
+clib_mov64 (u8 * dst, const u8 * src)
+{
+  clib_mov32 ((u8 *) dst + 0 * 32, (const u8 *) src + 0 * 32);
+  clib_mov32 ((u8 *) dst + 1 * 32, (const u8 *) src + 1 * 32);
+}
+
+static inline void
+clib_mov128 (u8 * dst, const u8 * src)
+{
+  clib_mov64 ((u8 *) dst + 0 * 64, (const u8 *) src + 0 * 64);
+  clib_mov64 ((u8 *) dst + 1 * 64, (const u8 *) src + 1 * 64);
+}
+
+static inline void
+clib_mov256 (u8 * dst, const u8 * src)
+{
+  clib_mov128 ((u8 *) dst + 0 * 128, (const u8 *) src + 0 * 128);
+  clib_mov128 ((u8 *) dst + 1 * 128, (const u8 *) src + 1 * 128);
+}
+
+/**
+ * Macro for copying unaligned block from one location to another with constant load offset,
+ * 47 bytes leftover maximum,
+ * locations should not overlap.
+ * Requirements:
+ * - Store is aligned
+ * - Load offset is <offset>, which must be immediate value within [1, 15]
+ * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
+ * - <dst>, <src>, <len> must be variables
+ * - __m128i <xmm0> ~ <xmm8> must be pre-defined
+ */
+#define CLIB_MVUNALIGN_LEFT47_IMM(dst, src, len, offset)                                                    \
+({                                                                                                          \
+    int tmp;                                                                                                \
+    while (len >= 128 + 16 - offset) {                                                                      \
+        xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16));                       \
+        len -= 128;                                                                                         \
+        xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16));                       \
+        xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16));                       \
+        xmm3 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 3 * 16));                       \
+        xmm4 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 4 * 16));                       \
+        xmm5 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 5 * 16));                       \
+        xmm6 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 6 * 16));                       \
+        xmm7 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 7 * 16));                       \
+        xmm8 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 8 * 16));                       \
+        src = (const u8 *)src + 128;                                                                        \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 2 * 16), _mm_alignr_epi8(xmm3, xmm2, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 3 * 16), _mm_alignr_epi8(xmm4, xmm3, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 4 * 16), _mm_alignr_epi8(xmm5, xmm4, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 5 * 16), _mm_alignr_epi8(xmm6, xmm5, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 6 * 16), _mm_alignr_epi8(xmm7, xmm6, offset));             \
+        _mm_storeu_si128((__m128i *)((u8 *)dst + 7 * 16), _mm_alignr_epi8(xmm8, xmm7, offset));             \
+        dst = (u8 *)dst + 128;                                                                              \
+    }                                                                                                       \
+    tmp = len;                                                                                              \
+    len = ((len - 16 + offset) & 127) + 16 - offset;                                                        \
+    tmp -= len;                                                                                             \
+    src = (const u8 *)src + tmp;                                                                            \
+    dst = (u8 *)dst + tmp;                                                                                  \
+    if (len >= 32 + 16 - offset) {                                                                          \
+        while (len >= 32 + 16 - offset) {                                                                   \
+            xmm0 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 0 * 16));                   \
+            len -= 32;                                                                                      \
+            xmm1 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 1 * 16));                   \
+            xmm2 = _mm_loadu_si128((const __m128i *)((const u8 *)src - offset + 2 * 16));                   \
+            src = (const u8 *)src + 32;                                                                     \
+            _mm_storeu_si128((__m128i *)((u8 *)dst + 0 * 16), _mm_alignr_epi8(xmm1, xmm0, offset));         \
+            _mm_storeu_si128((__m128i *)((u8 *)dst + 1 * 16), _mm_alignr_epi8(xmm2, xmm1, offset));         \
+            dst = (u8 *)dst + 32;                                                                           \
+        }                                                                                                   \
+        tmp = len;                                                                                          \
+        len = ((len - 16 + offset) & 31) + 16 - offset;                                                     \
+        tmp -= len;                                                                                         \
+        src = (const u8 *)src + tmp;                                                                        \
+        dst = (u8 *)dst + tmp;                                                                              \
+    }                                                                                                       \
+})
+
+/**
+ * Macro for copying unaligned block from one location to another,
+ * 47 bytes leftover maximum,
+ * locations should not overlap.
+ * Use switch here because the aligning instruction requires immediate value for shift count.
+ * Requirements:
+ * - Store is aligned
+ * - Load offset is <offset>, which must be within [1, 15]
+ * - For <src>, make sure <offset> bit backwards & <16 - offset> bit forwards are available for loading
+ * - <dst>, <src>, <len> must be variables
+ * - __m128i <xmm0> ~ <xmm8> used in CLIB_MVUNALIGN_LEFT47_IMM must be pre-defined
+ */
+#define CLIB_MVUNALIGN_LEFT47(dst, src, len, offset)                  \
+({                                                                    \
+    switch (offset) {                                                 \
+    case 0x01: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x01); break;   \
+    case 0x02: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x02); break;   \
+    case 0x03: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x03); break;   \
+    case 0x04: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x04); break;   \
+    case 0x05: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x05); break;   \
+    case 0x06: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x06); break;   \
+    case 0x07: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x07); break;   \
+    case 0x08: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x08); break;   \
+    case 0x09: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x09); break;   \
+    case 0x0A: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0A); break;   \
+    case 0x0B: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0B); break;   \
+    case 0x0C: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0C); break;   \
+    case 0x0D: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0D); break;   \
+    case 0x0E: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0E); break;   \
+    case 0x0F: CLIB_MVUNALIGN_LEFT47_IMM(dst, src, n, 0x0F); break;   \
+    default:;                                                         \
+    }                                                                 \
+})
+
+static inline void *
+clib_memcpy (void *dst, const void *src, size_t n)
+{
+  __m128i xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8;
+  uword dstu = (uword) dst;
+  uword srcu = (uword) src;
+  void *ret = dst;
+  size_t dstofss;
+  size_t srcofs;
+
+	/**
+	 * Copy less than 16 bytes
+	 */
+  if (n < 16)
+    {
+      if (n & 0x01)
+	{
+	  *(u8 *) dstu = *(const u8 *) srcu;
+	  srcu = (uword) ((const u8 *) srcu + 1);
+	  dstu = (uword) ((u8 *) dstu + 1);
+	}
+      if (n & 0x02)
+	{
+	  *(u16 *) dstu = *(const u16 *) srcu;
+	  srcu = (uword) ((const u16 *) srcu + 1);
+	  dstu = (uword) ((u16 *) dstu + 1);
+	}
+      if (n & 0x04)
+	{
+	  *(u32 *) dstu = *(const u32 *) srcu;
+	  srcu = (uword) ((const u32 *) srcu + 1);
+	  dstu = (uword) ((u32 *) dstu + 1);
+	}
+      if (n & 0x08)
+	{
+	  *(u64 *) dstu = *(const u64 *) srcu;
+	}
+      return ret;
+    }
+
+	/**
+	 * Fast way when copy size doesn't exceed 512 bytes
+	 */
+  if (n <= 32)
+    {
+      clib_mov16 ((u8 *) dst, (const u8 *) src);
+      clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
+      return ret;
+    }
+  if (n <= 48)
+    {
+      clib_mov32 ((u8 *) dst, (const u8 *) src);
+      clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
+      return ret;
+    }
+  if (n <= 64)
+    {
+      clib_mov32 ((u8 *) dst, (const u8 *) src);
+      clib_mov16 ((u8 *) dst + 32, (const u8 *) src + 32);
+      clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
+      return ret;
+    }
+  if (n <= 128)
+    {
+      goto COPY_BLOCK_128_BACK15;
+    }
+  if (n <= 512)
+    {
+      if (n >= 256)
+	{
+	  n -= 256;
+	  clib_mov128 ((u8 *) dst, (const u8 *) src);
+	  clib_mov128 ((u8 *) dst + 128, (const u8 *) src + 128);
+	  src = (const u8 *) src + 256;
+	  dst = (u8 *) dst + 256;
+	}
+    COPY_BLOCK_255_BACK15:
+      if (n >= 128)
+	{
+	  n -= 128;
+	  clib_mov128 ((u8 *) dst, (const u8 *) src);
+	  src = (const u8 *) src + 128;
+	  dst = (u8 *) dst + 128;
+	}
+    COPY_BLOCK_128_BACK15:
+      if (n >= 64)
+	{
+	  n -= 64;
+	  clib_mov64 ((u8 *) dst, (const u8 *) src);
+	  src = (const u8 *) src + 64;
+	  dst = (u8 *) dst + 64;
+	}
+    COPY_BLOCK_64_BACK15:
+      if (n >= 32)
+	{
+	  n -= 32;
+	  clib_mov32 ((u8 *) dst, (const u8 *) src);
+	  src = (const u8 *) src + 32;
+	  dst = (u8 *) dst + 32;
+	}
+      if (n > 16)
+	{
+	  clib_mov16 ((u8 *) dst, (const u8 *) src);
+	  clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
+	  return ret;
+	}
+      if (n > 0)
+	{
+	  clib_mov16 ((u8 *) dst - 16 + n, (const u8 *) src - 16 + n);
+	}
+      return ret;
+    }
+
+	/**
+	 * Make store aligned when copy size exceeds 512 bytes,
+	 * and make sure the first 15 bytes are copied, because
+	 * unaligned copy functions require up to 15 bytes
+	 * backwards access.
+	 */
+  dstofss = 16 - ((uword) dst & 0x0F) + 16;
+  n -= dstofss;
+  clib_mov32 ((u8 *) dst, (const u8 *) src);
+  src = (const u8 *) src + dstofss;
+  dst = (u8 *) dst + dstofss;
+  srcofs = ((uword) src & 0x0F);
+
+	/**
+	 * For aligned copy
+	 */
+  if (srcofs == 0)
+    {
+		/**
+		 * Copy 256-byte blocks
+		 */
+      for (; n >= 256; n -= 256)
+	{
+	  clib_mov256 ((u8 *) dst, (const u8 *) src);
+	  dst = (u8 *) dst + 256;
+	  src = (const u8 *) src + 256;
+	}
+
+		/**
+		 * Copy whatever left
+		 */
+      goto COPY_BLOCK_255_BACK15;
+    }
+
+	/**
+	 * For copy with unaligned load
+	 */
+  CLIB_MVUNALIGN_LEFT47 (dst, src, n, srcofs);
+
+	/**
+	 * Copy whatever left
+	 */
+  goto COPY_BLOCK_64_BACK15;
+}
+
+
+#undef CLIB_MVUNALIGN_LEFT47_IMM
+#undef CLIB_MVUNALIGN_LEFT47
+
+#endif /* included_clib_memcpy_sse3_h */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */