101 Commits

Author	SHA1	Message	Date
Emmanuel Marty	668204d953	Merge optimizations by Pavel Zagrebin ... Manually merge PR #44	2020-04-04 13:29:25 +02:00
Emmanuel Marty	47e54ac110	Remove unused code	2020-03-24 20:18:22 +01:00
odzhan	5fddaca0f8	compact decompressors for x86	2020-01-13 18:14:11 +00:00
Emmanuel Marty	693618f100	More asm fixes	2020-01-08 13:11:43 +01:00
Emmanuel Marty	aa122d1e05	Fix assembly when not using LZSA_SHORT_CP	2020-01-08 10:40:26 +01:00
Peter Ferrie	9f020b3605	fix typos in original code	2020-01-07 17:02:43 -08:00
Peter Ferrie	22e2f80ae7	cut one byte	2020-01-07 16:57:49 -08:00
Peter Ferrie	45b91ddaa2	fasterer v2	2020-01-06 22:24:07 -08:00
Emmanuel Marty	fb7e03030f	Merge pull request #38 from specke/master ... -2 bytes	2020-01-03 10:37:28 +01:00
Emmanuel Marty	29e8960e6f	Add faster LZSA1 6502 depacker by jbrandwood	2020-01-03 10:31:54 +01:00
Emmanuel Marty	410544f4e6	Fast 6502 LZSA2 depacker: smaller size, same speed	2020-01-03 10:01:23 +01:00
introspec	96b9933bd3	remove temporary label	2020-01-02 14:32:30 +00:00
introspec	9cd9fa5939	-2 bytes ... (same speed)	2020-01-02 14:30:00 +00:00
Emmanuel Marty	8721c11041	Add faster LZSA2 depacker by jbrandwood	2019-12-24 12:02:34 +01:00
Emmanuel Marty	a46796b6a9	Fix assembling of 6502 fast v1 depacker	2019-12-24 10:16:01 +01:00
Peter Ferrie	302234a91b	fast v2	2019-10-31 23:01:00 -07:00
Peter Ferrie	9fc9a49d67	fast v1	2019-10-31 22:20:02 -07:00
mobygamer	30192238ea	Rewrite 8088 jumptable decompressor for maximum speed ... This is a rewrite of LZSA1JMP.ASM to use a 256-element jumptable, which allows the code to handle all of the hot paths (common cases) without any branching. This not only reduces branches (which are very costly on x86) to a bare minimum, but also grants us foreknowledge in a decode path of what steps can be skipped. The new code is 12.7% faster than the old code, and assembles to less than 3K of object code and data.	2019-10-26 23:34:24 -05:00
introspec	d5d788946e	Added an option for unrolling long match copying ... Usually useless and costing +57 bytes, this option can bring dramatic performance improvements on very compressible data dominated by long matches	2019-10-22 20:11:46 +01:00
introspec	495a12216f	-1 byte ... Very slightly faster too	2019-10-11 00:23:43 +01:00
introspec	566e3a94e8	+0.2% speed ... also, added an option to unroll LDIR for longer matches (which adds 38 bytes, but can be significantly faster for files with many long matches)	2019-10-10 22:50:23 +01:00
Emmanuel Marty	6a62f7d795	Update Z80 depackers changes history	2019-09-26 11:42:52 +02:00
Emmanuel Marty	681f78d1e8	Rename	2019-09-26 07:48:59 +02:00
Emmanuel Marty	8015ab8650	Rename	2019-09-26 07:48:44 +02:00
Emmanuel Marty	2f15298343	Rename	2019-09-26 07:48:33 +02:00
Emmanuel Marty	648a308d87	Rename	2019-09-26 07:48:19 +02:00
Emmanuel Marty	587a92f4ab	Rename Z80 depackers, add version history to LZSA1	2019-09-26 07:47:43 +02:00
Emmanuel Marty	7d9135c548	Update Z80 decompressors	2019-09-25 08:09:18 +02:00
Emmanuel Marty	9de7e930e9	Faster LZSA1 z80 decompression	2019-08-27 13:16:20 +02:00
uniabis	a807344343	2bytes shorter	2019-08-22 12:55:55 +09:00
introspec	be30cae636	-1 byte ... slightly slower, but this is the size-optimized branch	2019-08-06 12:36:27 +01:00
introspec	44bff39de3	New faster and shorter decompressors ... This update is mostly about better integration of improvements by uniabis, with spke contributing several smaller size optimizations.	2019-08-01 15:07:14 +01:00
introspec	e7bb1faece	Merge branch 'master' into master	2019-07-31 23:24:30 +01:00
introspec	51ef92cdab	incorporated improvements by uniabis ... also, slightly faster decompression for fast packer in backwards mode	2019-07-31 20:42:47 +01:00
uniabis	8d0528fddc	hd64180 support ... a bit faster, a bit smaller	2019-07-31 01:39:27 +09:00
Emmanuel Marty	0a04796b19	Fix for z80 LZSA2 fast backward depacker	2019-07-27 15:39:44 +02:00
introspec	ac3bf78273	fix a bug in the backward version of unlzsa2_fast_v1.asm ... an INC HL slipped through	2019-07-27 14:14:54 +01:00
Emmanuel Marty	82edcb8bb5	Fix literal runs that are multiple of 256 bytes	2019-07-27 01:35:46 +02:00
Emmanuel Marty	ae4cc12aed	Use ACME syntax	2019-07-26 12:31:26 +02:00
Emmanuel Marty	fd70be918c	Merge pull request #19 from specke/master ... Support for -b in Z80 decompressors	2019-07-24 20:09:48 +02:00
Emmanuel Marty	4835e4c26c	Support backward decompression	2019-07-24 20:08:23 +02:00
introspec	cca79e3e59	Delete unlzsa_small_v1.asm	2019-07-24 17:31:22 +01:00
introspec	607b26d337	Delete unlzsa_fast_v1.asm	2019-07-24 17:31:14 +01:00
introspec	fd61f403ad	LZSA1 decompressors with added support for -b.	2019-07-24 17:30:37 +01:00
introspec	fcfba056d2	Add files via upload ... LZSA2 decompressors with support for -b option.	2019-07-24 17:28:39 +01:00
Emmanuel Marty	081a29a3db	Fix copying multiples of 256 bytes	2019-07-14 16:14:55 +02:00
Emmanuel Marty	710d7e05d6	Fix comments	2019-07-14 10:13:16 +02:00
Emmanuel Marty	0b540431fc	Fix comments	2019-07-14 10:12:32 +02:00
Emmanuel Marty	981b1d5925	NASM versions of Jim Leonard's speed-optimized depackers	2019-07-14 10:11:16 +02:00
Emmanuel Marty	19e8bc0468	Merge pull request #17 from MobyGamer/decompressor/8086_speed ... Time-efficient LZSA2 decompressor	2019-07-14 09:28:40 +02:00