1 files changed, 64 insertions, 0 deletions
diff --git a/src/isa-l/igzip/bitbuf2.asm b/src/isa-l/igzip/bitbuf2.asm
new file mode 100644
index 000000000..71493825e
--- /dev/null
+++ b/src/isa-l/igzip/bitbuf2.asm
@@ -0,0 +1,64 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;  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.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+%include "options.asm"
+%include "stdmac.asm"
+
+; Assumes m_out_buf is a register
+; Clobbers RCX
+; code is clobbered
+; write_bits_always	m_bits, m_bit_count, code, count, m_out_buf
+%macro write_bits 5
+%define %%m_bits	%1
+%define %%m_bit_count	%2
+%define %%code		%3
+%define %%count		%4
+%define %%m_out_buf	%5
+
+	SHLX	%%code, %%code, %%m_bit_count
+
+	or	%%m_bits, %%code
+	add	%%m_bit_count, %%count
+
+	mov	[%%m_out_buf], %%m_bits
+	mov	rcx, %%m_bit_count
+	shr	rcx, 3			; rcx = bytes
+	add	%%m_out_buf, rcx
+	shl	rcx, 3			; rcx = bits
+	and	%%m_bit_count, 0x7
+
+	SHRX	%%m_bits, %%m_bits, rcx
+%endm
+
+%macro write_dword 2
+%define %%data %1d
+%define %%addr %2
+	mov	[%%addr], %%data
+	add	%%addr, 4
+%endm