Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 130 insertions, 0 deletions

diff --git a/src/spdk/isa-l/igzip/bitbuf2.h b/src/spdk/isa-l/igzip/bitbuf2.h
new file mode 100644
index 000000000..51bd752d0
--- /dev/null
+++ b/src/spdk/isa-l/igzip/bitbuf2.h
@@ -0,0 +1,130 @@
+/**********************************************************************
+  Copyright(c) 2011-2016 Intel Corporation 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 BITBUF2_H
+#define BITBUF2_H
+
+#include "igzip_lib.h"
+#include "unaligned.h"
+
+#ifdef _MSC_VER
+#define inline __inline
+#endif
+
+
+/* MAX_BITBUF_BIT WRITE is the maximum number of bits than can be safely written
+ * by consecutive calls of write_bits. Note this assumes the bitbuf is in a
+ * state that is possible at the exit of write_bits */
+#define MAX_BITBUF_BIT_WRITE 56
+
+static inline void init(struct BitBuf2 *me)
+{
+	me->m_bits = 0;
+	me->m_bit_count = 0;
+}
+
+static inline void set_buf(struct BitBuf2 *me, unsigned char *buf, unsigned int len)
+{
+	unsigned int slop = 8;
+	me->m_out_buf = me->m_out_start = buf;
+	me->m_out_end = buf + len - slop;
+}
+
+static inline int is_full(struct BitBuf2 *me)
+{
+	return (me->m_out_buf > me->m_out_end);
+}
+
+static inline uint8_t * buffer_ptr(struct BitBuf2 *me)
+{
+	return me->m_out_buf;
+}
+
+static inline uint32_t buffer_used(struct BitBuf2 *me)
+{
+	return (uint32_t)(me->m_out_buf - me->m_out_start);
+}
+
+static inline uint32_t buffer_bits_used(struct BitBuf2 *me)
+{
+	return (8 * (uint32_t)(me->m_out_buf - me->m_out_start) + me->m_bit_count);
+}
+
+static inline void flush_bits(struct BitBuf2 *me)
+{
+	uint32_t bits;
+	store_u64(me->m_out_buf, me->m_bits);
+	bits = me->m_bit_count & ~7;
+	me->m_bit_count -= bits;
+	me->m_out_buf += bits/8;
+	me->m_bits >>= bits;
+
+}
+
+/* Can write up to 8 bytes to output buffer */
+static inline void flush(struct BitBuf2 *me)
+{
+	uint32_t bytes;
+	if (me->m_bit_count) {
+		store_u64(me->m_out_buf, me->m_bits);
+		bytes = (me->m_bit_count + 7) / 8;
+		me->m_out_buf += bytes;
+	}
+	me->m_bits = 0;
+	me->m_bit_count = 0;
+}
+
+static inline void check_space(struct BitBuf2 *me, uint32_t num_bits)
+{
+	/* Checks if bitbuf has num_bits extra space and flushes the bytes in
+	 * the bitbuf if it doesn't. */
+	if (63 - me->m_bit_count < num_bits)
+		flush_bits(me);
+}
+
+static inline void write_bits_unsafe(struct BitBuf2 *me, uint64_t code, uint32_t count)
+{
+	me->m_bits |= code << me->m_bit_count;
+	me->m_bit_count += count;
+}
+
+static inline void write_bits(struct BitBuf2 *me, uint64_t code, uint32_t count)
+{	/* Assumes there is space to fit code into m_bits. */
+	me->m_bits |= code << me->m_bit_count;
+	me->m_bit_count += count;
+	flush_bits(me);
+}
+
+static inline void write_bits_flush(struct BitBuf2 *me, uint64_t code, uint32_t count)
+{	/* Assumes there is space to fit code into m_bits. */
+	me->m_bits |= code << me->m_bit_count;
+	me->m_bit_count += count;
+	flush(me);
+}
+
+#endif //BITBUF2_H