upx/NEWS
Markus F.X.J. Oberhumer a2063f0628 Normalize whitespace.
2016-09-20 02:06:58 +02:00

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==================================================================
User visible changes for UPX
==================================================================
Changes in 3.92 (XX XXX 2015):
* all pe formats: important internal changes - reunited the diverged
source files - please report regressions into the bug tracker
* Fix CERT-FI Case 829767 UPX command line tools segfaults.
Received by UPX Team on 2015-May-08; originally reported
by Codenomicon to NCSC-FI on 2015-01-08.
The vulnerabilities were discovered by Joonas Kuorilehto and
Antti Häyrynen from Codenomicon
* Explicitly diagnose Go-language bad PT_LOAD; recommend hemfix.c.
https://sourceforge.net/p/upx/bugs/195/ https://github.com/pwaller/goupx
* bug fixes
Changes in 3.91 (30 Sep 2013):
* Added experimental support for Windows 64-bit PE files, based on
work by Stefan Widmann. Please use for testing only!
* bug fixes
==================================================================
Changes in 3.09 (18 Feb 2013):
* New option --preserve-build-id for GNU ELF.
* Allow for code signing and LC_UUID on Mac OS X executables.
* Allow non-contiguous LC_SEGMENTs and 0==.vmsize for Mach-O.
* Allow zero-filled final page in PackUnix::canUnpack().
* bug fixes
Changes in 3.08 (12 Dec 2011):
* Fix allocation in runtime stub for darwin.macho-entry (i386 and amd64).
* Compress shared library on ELF i386 only [ld.so threatens even this case].
* Attempt to support ELF on QNX 6.3.0 for armel (experimental).
* Better diagnostic when ELF -fPIC is needed.
* PT_NOTE improvements for *BSD.
* Preserve more ELF .e_flags on ARM.
* Minor code improvements for ELF stubs.
* Defend against another flavor of corrupt PE header.
* bug fixes
Changes in 3.07 (08 Sep 2010):
* win32/pe: fixed relocation handling for files with *no* TLS callbacks
[severe bug introduced in 3.06]
Changes in 3.06 (04 Sep 2010):
* win32/pe: TLS callback support contributed by Stefan Widmann. Thanks!
* bug fixes
Changes in 3.05 (27 Apr 2010):
* i386-linux and amd64-linux support shared libraries (DT_INIT must
exist, all info needed by runtime loader must be first in .text, etc.)
* Linux /proc/self/exe now is preserved by default, by leaving behind
one page. New compress-time option --unmap-all-pages is available.
* Withdraw support for shared libraries on Darwin (Apple Mac OS X)
because upx does not understand enough about .dylib.
* bug fixes
Changes in 3.04 (27 Sep 2009):
* new format Mach/AMD64 supports 64-bit programs on Apple Macintosh.
* new formats Dylib/i386 and Dylib/ppc32 support shared libraries
[such as browser plugins] on Darwin (Apple Macintosh). An existing
-init function (LC_ROUTINES command) is required.
* new format vmlinuz/armel for Debian NSLU2 (etc.) linux kernel
* bvmlinuz boot protocol 2.08 for 386 Linux kernel
* Extended ABI version 4 for armel-eabi ARM Linux ELF
* bug fixes
Changes in 3.03 (27 Apr 2008):
* implement cache flushing for PowerPC (esp. model 440)
* fix cache flushing on MIPS (>3 MiB compressed, or with holes)
* fix MIPS big-endian
* bug fixes
Changes in 3.02 (16 Dec 2007):
* fix unmapping on arm-linux.elf
* fix error checking in mmap for i386-linux.elf [triggered by -fPIE]
* bug fixes
Changes in 3.01 (31 Jul 2007):
* new options --no-mode, --no-owner and --no-time to disable preservation
of mode (file permissions), file ownership and timestamps.
* dos/exe: fixed an incorrect error message caused by a bug in
relocation handling
* new format linux/mipsel supports ELF on [32-bit] R3000
* fix argv[0] on PowerPC with --lzma
* bug fixes
Changes in 3.00 (27 Apr 2007):
* watcom/le & tmt/adam: fixed a problem when using certain filters
Changes in 2.93 beta (08 Mar 2007):
* new formats Mach/i386 and Mach/fat support Mac OS X i686 and
Universal binaries [i686 and PowerPC only]
* dos/exe: LZMA is now also supported for 16-bit dos/exe. Please note that
you have to explicitly use '--lzma' even for '--ultra-brute' here
because runtime decompression is about 30 times slower than NRV -
which is really noticeable on old machines.
* dos/exe: fixed a rarely occuring bug in relocation handling
* win32/pe & arm/pe: better icon compression handling
Changes in 2.92 beta (23 Jan 2007):
* new option '--ultra-brute' which tries even more variants
* slightly improved compression ratio for some files when
using '--brute' or '--ultra-brute'
* bug fixes
Changes in 2.91 beta (29 Nov 2006):
* assorted bug fixes
* arm/pe: fix "missing" icon & version info resource problem for wince 5
* win32/pe & arm/pe: added option --compress-icons=3 to compress all icons
Changes in 2.90 beta (08 Oct 2006):
* LZMA algorithm support for most of the 32-bit and 64-bit file formats;
use new option '--lzma' to enable
* new format: BSD/elf386 supporting FreeBSD, NetBSD and OpenBSD
via auto-detection of PT_NOTE or EI_OSABI
* arm/pe: all the NRV compression methods are now supported
(only NRV2D is missing in thumb mode)
* linux/elf386, linux/ElfAMD: remember /proc/self/exe in environment
* major source code changes: the runtime decompression stubs are now
built from internal ELF objects
==================================================================
Changes in 2.03 (07 Nov 2006):
* bvmlinuz/386: fix for kernels not at 0x100000; also allow x86_64
* linux/elf386: work around Linux kernel bug (0-length .bss needs PF_W)
Changes in 2.02 (13 Aug 2006):
* linux/386: work around Linux kernel bug (".bss" requires PF_W)
* linux/ppc32, mach/ppc32: compressed programs now work on a 405 CPU
* vmlinuz/386: fixed zlib uncompression problem on DOS
Changes in 2.01 (06 Jun 2006):
* arm/pe: better DLL support
* dos/exe: device driver support added
* linux/386: Fix --force-execve for PaX, grSecurity, and strict SELinux.
/tmp must support execve(); therefore /tmp cannot be mounted 'noexec'.
* win32/pe & arm/pe: added new option '--keep-resource=' for
excluding selected resources from compression
Changes in 2.00 (27 Apr 2006):
* linux/386: the stub now prints an error message if some strict
SELinux mode does prevent runtime decompression and execution
(for a fully SELinux-compatible but otherwise inferior compression
format you can use the '--force-execve' option)
* linux/386: worked around a problem where certain Linux kernels
clobber the %ebx register during a syscall
* win32/pe: disable filters for files with broken PE headers
Changes in 1.96 beta (13 Apr 2006):
* arm/pe: added filter support
* win32/pe: removed an unnecessary check so that Delphi 2006 and
Digital Mars C++ programs finally are supported
Changes in 1.95 beta (09 Apr 2006):
* arm/pe: added DLL support
* arm/pe: added thumb mode stub support
* arm/pe: added unpacking support
* win32/pe: really worked around R6002 runtime errors
Changes in 1.94 beta (11 Mar 2006):
* new format: added support for arm/pe (ARM executables running on WinCE)
* new format: added support for linux elf/amd64
* new format: added support for linux elf/ppc32
* new format: added support for mach/ppc32 (Apple Mac OS X)
* win32/pe: hopefully working "load config" support
* win32/pe: R6002 runtime errors worked around
* win32/pe: the stub now clears the dirty stack
Changes in 1.93 beta (07 Feb 2005):
* vmlinuz/386: fixes to support more kernels
Changes in 1.92 beta (20 Jul 2004):
* win32/pe: added option '--strip-loadconf' to strip the SEH load
config section [NOTE: this option is obsolete since UPX 1.94]
* win32/pe: try to detect .NET (win32/net) files [not yet supported by UPX]
* vmlinux/386: new format that directly supports building Linux kernels
* source code: now compiles cleanly under Win64
Changes in 1.91 beta (30 Jun 2004):
* djgpp2/coff: added support for recent binutils versions
* linux/elf386, linux/sh386: lots of improvements
* vmlinuz/386: added support for recent kernels
* watcom/le: don't crash on files without relocations
* win32/pe: stricter checks of some PE values
* option '--brute' now implies '--crp-ms=999999'.
* source code: much improved portability using ACC, the
Automatic Compiler Configuration
* source code: compile fixes for strict ISO C++ compilers
* source code: compile fixes for Win64
* re-synced with upx 1.25 branch
Changes in 1.90 beta (11 Nov 2002):
* implemented several new options for finer compression control:
'--all-methods', '--all-filters' and '--brute'
* ps1/exe: new format - UPX now supports PlayStation One programs
* linux/386: added the option '--force-execve'
* vmlinuz/386: better kernel detection and sanity checks
* re-synced with upx 1.24 branch
* documentation updates
Changes in 1.11 beta (20 Dec 2000):
* vmlinuz/386: new format - UPX now supports bootable linux kernels
* linux/elf386: added the new ELF direct-to-memory executable format - no
more temp files are needed for decompression!
* linux/sh386: added the new shell direct-to-memory executable format - no
more temp files are needed for decompression!
* reduced overall memory requirements during packing
* quite a number of internal source code rearrangements
==================================================================
Changes in 1.25 (29 Jun 2004)
* INFO: http://upx.sourceforge.net is the permanent UPX home page
* watcom/le: don't crash on files without relocations
* win32/pe: stricter checks of some PE values
* source code: much improved portability using ACC, the
Automatic Compiler Configuration
* source code: compile fixes for strict ISO C++ compilers
* source code: compile fixes for Win64
Changes in 1.24 (07 Nov 2002)
* djgpp2/coff: stricter check of the COFF header to work around a
problem with certain binutils versions
Changes in 1.23 (05 Sep 2002)
* atari/tos: fixed an unpacking problem where a buffer was too
small (introduced in 1.22)
* linux/386: don't give up too early if a single block turns out
to be incompressible
* documentation: added some quick tips how to achieve the best
compression ratio for the final release of your application
* fixed a rare situation where the exit code was not set correctly
Changes in 1.22 (27 Jun 2002)
* atari/tos: the stub now flushes the CPU cache to avoid
problems on 68030+ machines
* source code: additional compiler support for Borland C++,
Digital Mars C++ and Watcom C++
Changes in 1.21 (01 Jun 2002)
* New option '--crp-ms=' for slightly better compression at the cost
of higher memory requirements during compression.
Try 'upx --best --crp-ms=100000'. See the docs for more info.
* source code: portability fixes
* source code: compile fixes for g++ 3.0 and g++ 3.1
Changes in 1.20 (23 May 2001)
* slightly faster compression
* work around a gcc problem in the latest djgpp2 distribution
* watcom/le: fixed detection of already compressed files
* win32/pe: do not compress RT_MANIFEST resource types
* win32/pe: improved the error message for empty resource sections
* [NOTE: the jump from 1.08 to 1.20 is to avoid confusion with
our unstable development releases 1.1x and 1.9x]
Changes in 1.08 (30 Apr 2001)
* new native port to atari/tos
* win32/pe: shortened the identstring
* source code: portability fixes - UPX now builds cleanly under m68k CPUs
Changes in 1.07 (20 Feb 2001)
* win32/pe: corrected the TLS callback check
* win32/pe: really fixed that rare bug in relocation handling
* win32/pe: experimental support for SizeOfHeaders > 0x1000
* win32/pe: check for superfluous data between sections
* win32/pe: compressing screensavers (.scr) should finally work
Changes in 1.06 (27 Jan 2001)
* win32/pe: the check for TLS callbacks introduced in 1.05
was too strict - disabled for now
* dos/com: decreased the decompressor stack size a little bit
Changes in 1.05 (24 Jan 2001)
* win32/pe: refuse to compress programs with TLS callbacks
* win32/pe: stub changes to avoid slowdowns with some virus monitors
* win32/pe: reverted the relocation handling changes in 1.04
* linux/386: dont try to compress Linux kernel images (have a look
at the unstable UPX 1.1x beta versions for that)
Changes in 1.04 (19 Dec 2000)
* dos/exe: fixed an internal error when using '--no-reloc'
* win32/pe: fixed a rare bug in the relocation handling code
* some tunings for the default compression level
Changes in 1.03 (30 Nov 2000)
* linked with a new version of the NRV compression library:
- improved compression ratio a little bit
- overall significantly faster compression
- much faster when using high compression levels like '-9' or '--best'
- much faster with large files
* atari/tos: added support for FreeMiNT
* the 32-bit DOS version now uses the new CWSDSTUB extender
Changes in 1.02 (13 Sep 2000)
* watcom/le: fixed a problem with the Causeway extender
* win32/pe: don't automatically strip relocs if they seem needed
* support multiple backup generations when using '-k'
* updated the console screen driver
Changes in 1.01 (09 Apr 2000)
* win32/pe: fixed an uncompression problem in DLLs with empty
fixup sections
* win32/pe: fixed another rare uncompression problem - a field in the
PE header was set incorrectly
Changes in 1.00 (26 Mar 2000)
* documentation updates
* watcom/le: do not duplicate the non-resident name table
* win32/pe: fixed an import handling problem: sometimes too much data
could be deleted from a file -> the uncompressed file would not work
anymore
Changes in 0.99.3 (07 Mar 2000)
* win32/pe: fixed a rare problem in the stub string handling part
Changes in 0.99.2 (02 Mar 2000)
* dos/exe: fixed a typo causing an internal error (introduced in 0.99.1)
Changes in 0.99.1 (29 Feb 2000)
* win32/pe: fixed some object alignments which were causing
problems when loading compressed DLLs under Windows NT/2000
Changes in 0.99 (25 Feb 2000)
* FULL SOURCE CODE RELEASED UNDER THE TERMS OF THE GNU GPL
* win32/pe: changed default to '--strip-relocs=1'
* dos/com and dos/sys: fixed a bad decompressor problem
* linux/386: the counter for the progress indicator was off by one
Changes in 0.94 (06 Dec 1999)
* win32/pe: the stub now calls ExitProcess in case of import errors
* under DOS and Windows, the environment variable UPX now accepts
a '#' as replacement for '=' because of a COMMAND.COM limitation
Changes in 0.93 (22 Nov 1999)
* win32/pe: fixed --strip-relocs problem with uncompression
* win32/pe: fixed a bug which could produce a broken decompressor stub
* linux/386: yet another FreeBSD compatibility fix
Changes in 0.92 (14 Nov 1999)
* win32/pe: really fixed that one line (see below)
Changes in 0.91 (13 Nov 1999)
* win32/pe: an important one-line fix for the newly introduced problems
* dos/com and dos/sys: fixed an internal error
* dos/exe: correctly restore cs when uncompressing
Changes in 0.90 (10 Nov 1999)
* all formats: '--overlay=copy' now is the default overlay mode
* improved compression ratio for most files
* win32/pe: uncompression is finally supported
* win32/pe: never compress REGISTRY resources
* win32/pe: headersize was not set in PE header
* win32/pe: resource handling is rewritten
* win32/pe: the last :-) TLS problem is fixed
* win32/pe: somewhat less memory is required during compression
* linux/386: fixed compression of scripts which was broken since 0.71
* linux/386: more FreeBSD compatibility issues
* changed option: '-i' now prints some more details during compression
(not finished yet)
Changes in 0.84 (04 Oct 1999)
* dos/exe: fixed a rare problem where the decompressor could crash
* some other minor fixes
Changes in 0.83 (17 Sep 1999)
* dos/exe: fixed minimal memory requirement problem for some files
* win32/pe: fixed a bug which caused a crash in some compressed files
* linux/386: various improvements in the stub; also, for the sake
of FreeBSD users, the stub is now branded as Linux/ELF
Changes in 0.82 (16 Aug 1999)
* dos/exe: fixed a decompressor bug which could cause crash on some files
* linux/386: section headers are now stripped from the stub so that
'strip' won't ruin a compressed file any longer
* wc/le: support for stack not in the last object disabled again
* win32/pe: removed some unneeded data
Changes in 0.81 (04 Aug 1999)
* win32/pe: fixed an important bug in import handling
* dos/com: fixed an internal error that could happen with very small files
Changes in 0.80 (03 Aug 1999)
* you can set some default options in the environment var 'UPX'
* dos/com: the decompressor stub now checks for enough free memory
* dos/exe: decompressor rewritten, some bugs are fixed
* dos/exe: new option '--no-reloc': no relocation data is put into
the DOS header
* tmt/adam: added support for more stubs, detect already packed files
* tmt/adam: new option '--copy-overlay'
* wc/le: reduced memory requirement during uncompression
* wc/le: support files which do not contain their stack in the last object
* wc/le: fixed a bug which could cause a crash, improved relocation
handling
* wc/le: new option '--copy-overlay'
* win32/pe: '--compress-icons=2' is now the default
* win32/pe: even better TLS support
* win32/pe: versioninfo works on NT
* win32/pe: import by ordinal from kernel32.dll works
* win32/pe: other import improvements: importing a nonexistent DLL
results in a usual Windows message, importing a nonexistent function
results in program exit (instead of crash ;-)
* win32/pe: new option: '--compress-resources=0'
* win32/pe: reduced memory requirement during uncompression, some
files might even require LESS memory when they're compressed
* win32/pe: TYPELIBs should work now
* win32/pe: improved relocation handling, 16-bit relocations should work
* win32/pe: new option '--strip-relocs' (only if you know what you are doing)
* win32/pe: new option '--copy-overlay'
* important internal changes: now the stubs are built at runtime
Changes in 0.72 (12 May 1999)
* tmt/adam: fixed a serious problem in the decompressor stub; all
compressed tmt files should be recompressed
* win32/pe: fixed the 'shared sections not supported' warning:
read-only shared sections are fine
* win32/pe: never compress TYPELIB resources
* win32/pe: compressed files are hopefully less suspicious to heuristic
virus scanners now
* linux/386: minor decompressor stub updates, nicer progress bar
Changes in 0.71 (19 Apr 1999)
* dos/exe: added option '--no-overlay'
* linux/386: various improvements in the stub, most notably the
overhead for an extra cleanup process has been removed
* win32/pe: added support for export forwarders
* win32/pe: added support for DLLs without entry point or imports
* win32/pe: yet another .bss fix
* win32/pe: new option '--compress-icons=2': compress all icons
which are not in the first icon directory
* win32/pe: rearranged stub to avoid false alerts from some virus scanners
Changes in 0.70 (30 Mar 1999)
* added support for linux/386 executables
* improved compression ratio quite a bit
* added new compression level '--best' to squeeze out even some more bytes
* win32/pe: TLS support is much better now
* win32/pe: --compress-icons=0 should now work as well
* the usual minor fixes for win32/pe
Changes in 0.62 (16 Mar 1999)
* win32/pe: --compress-icons and --compress-exports are on now by default
* win32/pe: --compress-icons should really work now
* win32/pe: fixed a problem with embedded .bss sections
Changes in 0.61 (08 Mar 1999)
* atari/tos: fixed a problem where the bss segment could become too small
Changes in 0.60 (06 Mar 1999)
* win32/pe: fixed file corruption when the size of the export data is invalid
* win32/pe: fixed a problem with empty resource data
* win32/pe: compressed file alignment set to minimum value
* win32/pe: made all compressed sections writable
* fixed some other win32/pe bugs
* fixed an address optimization problem for some not Watcom LE files
* fixed a bug which could make UPX hang when an exe header contained
an illegal value
* added some compression flags for the win32/pe format
* added support for Atari ST/TT executables (atari/tos)
* improved compression ratio
* improved compression speed
Changes in 0.51 (14 Jan 1999)
* fixed a small bug in the PE header that would prevent some compressed
win32/pe executables from running under Windows NT and WINE
Changes in 0.50 (03 Jan 1999)
* added support for PE format executables (win32/pe & rtm32/pe)
* added support for TMT executables (tmt/adam)
* fixed a dos/sys bug that affected OpenDOS
Changes in 0.40 (05 Oct 1998)
* improved compression ratio
* fixed a small but fatal bug in dos/sys introduced in 0.30
* fixed a rare bug in dos/exe
* worked around a bug in djgpp's strip 2.8
* djgpp/coff: Allegro packfile support should work now
* added dos/exeh compression method (works on 386+)
Changes in 0.30 (27 Jul 1998)
* fixed a serious bug in the 32-bit compressors - please don't use
djgpp/coff and watcom/le compressed files from previous versions,
some of them are possibly damaged !
* the 16-bit uncompressors are a little bit shorter & faster
* fixed progress indicator for VESA and SVGA text modes
Changes in 0.20 (05 Jul 1998)
* second public beta release
* too many changes to list here
Changes in 0.05 (26 May 1998)
* first public beta release
# vim:set syntax=off tw=0 ts=4 sw=4 et: -*- coding: utf-8 -*-