tyler.durden
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kernel
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420 Commits 4 Branches 2 Tags 12 MiB
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29 Commits

Author SHA1 Message Date
Kenneth J Davis 2ce6dc00de
exeflat failed to advance str so didn't actually skip whitespace at beginning of string, additional comments 2024-08-18 16:22:15 -04:00
Jiří Malák bf53e22d7a
exeflat: Update usage text for indirect file 2024-07-17 22:28:01 +02:00
Jiri Malak c0009ebaaf echoto.bat: correct batch file for all parameters blank 2024-07-14 17:09:14 -04:00
Jiri Malak a5b516dd7b exeflat: add support for response file to exeflat utility 
the command line can overflow DOS max length that it fixes this issue
 2024-07-14 15:19:48 -04:00
Jiří Malák d6c50ebbe6 fix dos environment size issue with TC make 2024-07-13 07:43:07 -04:00
Jiří Malák e985cc36b3 utils: build utility programs by Open Watcom for Linux and Windows 2024-07-06 07:52:39 -04:00
Bernd Boeckmann e4a62f239d fix exeflat not deleting temporary file 2023-12-08 17:00:17 -05:00
Kenneth J Davis 0e6d90cf82
build fixes, declare variables at start of block, use size_t to avoid int vs long errors 2022-06-03 23:29:37 -04:00
C. Masloch 9343e00f9a exeflat: try to fix CI displaying upx output before exeflat output 2022-05-30 17:37:26 -04:00
C. Masloch b5299924c2 exeflat: update comments before prepending entry header 2022-05-30 17:37:26 -04:00
C. Masloch 70c498a309 exeflat: update usage screen with -E, -D, and -U switches 2022-05-30 17:37:26 -04:00
C. Masloch e3e58ee3fd upxentry, upxdevic: add header comments 2022-05-30 17:37:26 -04:00
C. Masloch 77d3c7e1d7 exeflat: document UPX 3.96 exact DOS/SYS limit but use a lower number 2022-05-30 17:37:26 -04:00
C. Masloch f23f035554 exeflat: allow to force either DOS/EXE or DOS/SYS compression format 2022-05-30 17:37:26 -04:00
C. Masloch 10b4d1581f exeflat: implement new-style UPX compression in DOS/SYS format 2022-05-30 17:37:26 -04:00
C. Masloch 9382d7ce00 exeflat: pass argv[3] to use as start_seg in write_header 2022-05-30 17:37:26 -04:00
C. Masloch 99614259ae exeflat: jump across nop slide when the stub is shorter than 192 bytes 2022-05-30 17:37:26 -04:00
C. Masloch 7f38303ade exeflat: shrink uncompressed stub size to 64 bytes 
The code still allows for up to 192 bytes, should that
be useful. Simply by re-assembling upxentry.asm then
re-running exeflat, the changes will be picked up.
 2022-05-30 17:37:26 -04:00
C. Masloch 45b3d9ef67 exeflat: move reading entry file into main, pass code to write_header 2022-05-30 17:37:26 -04:00
C. Masloch 992a898076 kernel.asm, exeflat: new format with UPX entry at 006C0h 
This format has several advantages:

* The CONFIG block need not be moved.

* The entire compressed image (depacker and payload) need
not be moved another time before the UPX depacker's own
operation.

* The CONFIG block always lives at 00602h, and the kernel
need not be aware whether it was compressed for detecting
which CONFIG block to use.

* Support for compressed images beyond 64 KiB for free.
(The assembly define TEST_FILL_INIT_TEXT can be passed in
NASMENV to test this support with 32 KiB of LFSR output.)

* A subsequent commit will shorten the stub to 64 bytes,
compared to the prior 32 + 45 = 77 bytes, with no loss
of features. (The packed payload is a bit shorter too.)

* The new stub also sets ds and es to the segment value
that would point to the DOS/EXE process's PSP. This is
apparently not used by the UPX depacker but could be in
a future or past version, or if another packer is used.
 2022-05-30 17:37:26 -04:00
C. Masloch 3b6d8362b3 exeflat: store original ss:sp in UPX help data 2022-05-21 23:22:08 -04:00
C. Masloch ad368a4420 exeflat: support signal byte (clc/stc) to indicate compression to kernel 2022-05-21 23:22:08 -04:00
C. Masloch f51c8a5304 exeflat: copy original CONFIG block to the depacker header 2022-05-21 23:22:08 -04:00
Tee-Kiah Chia 2111b543c1 Fix minor issues in diagnostic messages in utils/exeflat.c 2018-04-07 22:22:12 +08:00
Bart Oldeman e82de4b707 Introduce end-of-line normalization 2017-12-22 09:37:31 -05:00
Stas Sergeev e698ae2b3b unix2dos bat files 
ms-dos/pc-dos command.com does not understand unix line-endings.
 2016-10-06 07:23:59 -04:00
lpproj 7eca245bad Fix broken decompression on loading FAT16 kernel (compressed in dos/sys) 2015-04-13 00:03:25 +09:00
KJD a260927440 Tell version info without booting kernel 2012-10-15 06:41:07 -04:00
KJD c431157156 FreeDOS kernel current - 2041+svn1709 2012-10-14 20:08:06 -04:00