doubango/tinySIGCOMP/asm/deflate.asm

131 lines
3.4 KiB
NASM
Executable File

at (32)
readonly (0)
:index pad (2)
:extra_length_bits pad (2)
:len_value pad (2)
:extra_dist_bits pad (2)
:dist_value pad (2)
at (42)
:req_feed_loc pad (1)
:req_feed_len pad (1)
:req_feed_field pad (12)
:hash_start pad (8)
at (64)
:byte_copy_left pad (2)
:byte_copy_right pad (2)
:input_bit_order pad (2)
:decompressed_ptr pad (2)
:length_table pad (116)
:distance_table pad (120)
:hash_len_loc pad (2)
:state_len_loc pad (2)
:ret_params_loc pad (1)
:sigcomp_version pad (1)
align (64)
readonly (1)
:initialize_memory
set (udvm_memory_size, 8192)
set (length_table_start, (((length_table - 4) / 4) + 16384))
set (length_table_mid, (length_table_start + 24))
set (dist_table_start, (distance_table / 4))
MULTILOAD (64, 122, circular_buffer, udvm_memory_size, 5,
circular_buffer,
0, 3, 0, 4, 0, 5,
0, 6, 0, 7, 0, 8,
0, 9, 0, 10, 1, 11,
1, 13, 1, 15, 1, 17,
2, 19, 2, 23, 2, 27,
2, 31, 3, 35, 3, 43,
3, 51, 3, 59, 4, 67,
4, 83, 4, 99, 4, 115,
5, 131, 5, 163, 5, 195,
5, 227, 0, 258,
0, 1, 0, 2, 0, 3,
0, 4, 1, 5, 1, 7,
2, 9, 2, 13, 3, 17,
3, 25, 4, 33, 4, 49,
5, 65, 5, 97, 6, 129,
6, 193, 7, 257, 7, 385,
8, 513, 8, 769, 9, 1025,
9, 1537, 10, 2049, 10, 3073,
11, 4097, 11, 6145, 12, 8193,
12, 12289, 13, 16385, 13, 24577)
; -- hash_len, state_len, params, version, dicts
INPUT-BYTES (6, hash_len_loc, !)
LOAD (66, $state_len_loc)
ADD(66, 64)
:decompress_sigcomp_msg
:start_decomp
INPUT-BITS (3, extra_length_bits, !)
:next_char
INPUT-HUFFMAN (index, end_of_msg, 4,
7, 0, 23, length_table_start,
1, 48, 191, 0,
0, 192, 199, length_table_mid,
1, 400, 511, 144)
COMPARE ($index, length_table_start, literal, end_of_msg,
length_distance)
:literal
set (index_lsb, (index + 1))
OUTPUT (index_lsb, 1)
COPY-LITERAL (index_lsb, 1, $decompressed_ptr)
JUMP (next_char)
:length_distance
; this is the length part
MULTIPLY ($index, 4)
COPY ($index, 4, extra_length_bits)
INPUT-BITS ($extra_length_bits, extra_length_bits, !)
ADD ($len_value, $extra_length_bits)
; this is the distance part
INPUT-HUFFMAN (index, !, 1, 5, 0, 31, dist_table_start)
MULTIPLY ($index, 4)
COPY ($index, 4, extra_dist_bits)
INPUT-BITS ($extra_dist_bits, extra_dist_bits, !)
ADD ($dist_value, $extra_dist_bits)
LOAD (index, $decompressed_ptr)
COPY-OFFSET ($dist_value, $len_value, $decompressed_ptr)
OUTPUT ($index, $len_value)
JUMP (next_char)
:end_of_msg
LOAD (req_feed_loc, 1158)
MULTILOAD (hash_start, 4, $state_len_loc, 64, decompress_sigcomp_msg, 6)
SHA-1 (hash_start, $hash_len_loc, req_feed_field)
END-MESSAGE (req_feed_loc, ret_params_loc, $state_len_loc, 64, decompress_sigcomp_msg, 6, 0)
readonly (0)
:circular_buffer