isa-l/igzip/aarch64/bitbuf2_aarch64.h
Jerry Yu f3bb041799 igzip: Implement deflate body/finish with assembly
Change-Id: I556af7976294f31abd72ac49366f7259e3baf399
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
2019-10-11 09:59:30 -07:00

58 lines
2.4 KiB
C

/**********************************************************************
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#ifndef __BITBUF2_AARCH64_H__
#define __BITBUF2_AARCH64_H__
#include "options_aarch64.h"
#ifdef __ASSEMBLY__
.macro update_bits stream:req,code:req,code_len:req,m_bits:req,m_bit_count:req \
m_out_buf:req
lsl x_\code,x_\code,x_\m_bit_count
orr x_\m_bits,x_\code,x_\m_bits
add x_\m_bit_count,x_\code_len,x_\m_bit_count
str x_\m_bits,[x_\m_out_buf]
and w_\code,w_\m_bit_count,-8
lsr w_\code_len,w_\m_bit_count,3
add x_\m_out_buf,x_\m_out_buf,w_\code_len,uxtw
sub w_\m_bit_count,w_\m_bit_count,w_\code
lsr x_\m_bits,x_\m_bits,x_\code
str x_\m_bits,[stream,_internal_state_bitbuf_m_bits]
str w_\m_bit_count,[stream,_internal_state_bitbuf_m_bit_count]
str x_\m_out_buf,[stream,_internal_state_bitbuf_m_out_buf]
.endm
#endif
#endif