isa-l/igzip/igzip_deflate_hash.asm
Roy Oursler ed15402f5b igzip: Add stateful dictionary support
Change-Id: I75dbac947787bc0041674468c88d0aa41b8b082f
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
2017-06-26 04:11:48 -04:00

62 lines
957 B
NASM

%include "options.asm"
%include "lz0a_const.asm"
%include "data_struct2.asm"
%include "huffman.asm"
%include "reg_sizes.asm"
%define DICT_SLOP 4
%ifidn __OUTPUT_FORMAT__, win64
%define arg1 rcx
%define arg2 rdx
%define arg3 r8
%else
%define arg1 rdi
%define arg2 rsi
%define arg3 rdx
%endif
%define stream arg1
%define dict_offset arg2
%define dict_len arg3
%define f_i arg3
%define data r9
%define hash r10
%define f_i_end r11
global isal_deflate_hash_lvl0_01
isal_deflate_hash_lvl0_01:
%ifnidn (arg1, stream)
mov stream, arg1
%endif
%ifnidn (arg2, dict_next)
mov dict_offset, arg2
%endif
mov f_i_end %+ d, dword [stream + _total_in]
neg f_i
add f_i, f_i_end
sub dict_offset, f_i
sub f_i_end, DICT_SLOP
cmp f_i, f_i_end
jg end
main_loop:
mov data %+ d, [f_i + dict_offset]
compute_hash hash, data
and hash, HASH_MASK
mov [stream + _internal_state_head + 2 * hash], f_i %+ w
add f_i, 1
cmp f_i, f_i_end
jle main_loop
end:
ret