For version 0.16.*.

> Sorry forgot to flip this back: perror and strerror are back to using

the /lib/liberror.txt file for all 8086 Elks modes. Only i386 has the

file linked. Elksemu now traps accesses to this file and substitutes

a fake.

> Added vararg macros to new preprocessor.

> Builtin CPP removed for __BCC__ compile, bcc-cc1 fit in 16bit but

crashes. Thirty two bit works fine, gcc or bcc. (almost any 32bit.)

> Added __BCC_VERSION__ macro, defined by bcc.c contains hex version no.

> Bugfix for offsets generated by #asm when using -O option to bcc-cc1.

Extra compile option ASM_USES_CALLEE_REGS.

> Extra checking and bugfix for mixing char values with long shifts.

> WARNING to distributions: I've altered the install scripts and paths

you will want to check them. Altered paths for bcc.c and normal

installs, defaults should now be good for distributions where bcc is a

cross compiler. If you set the PREFIX to / it'll install to suggested

Native paths. As86_encap moved to LIBDIR.

> I've altered 'perror' and 'strerror' to be normal when compiled for

everything except libc_f.a. Only with that library will it look for the

liberror.txt file and it now looks in "/lib/liberror.txt" only.

This means there's no need to install it anywhere except ELKS itself.

> Change -Mg option to use uclibc as glibc2 seems to have stopped working.

> ar.c switch to using strerror.

> Move elksemu, it's used like a shared library but is best treated like

an emulator so it's now installed in DISTBIN. Also on Linux-386 it's

compiled using the system compiler.

> Use the POSIX -R argument to cp rather than the normal standard -r because

some new systems have decided to stop supporting their '-r' option.

> Oops, the constant error strings in the assembler were char pointers not

char arrays, small waste of space.

> Allow for Linux-2.6 32bit dev_t.

> More changes so it compiles better on 'other' machines.

Removed some GNU-Make'isms in the top header file.

> It seems that CYGWin's problem with _P is inherited from BSD. It also

seems most of my problems come from BSD recently, haven't they realised

that they down own the 'Unix Standard' anymore and haven't since SYSV

got popular.

> Some changes for cygwin, it isn't quite as nasty as compiling for minix

but it doesn't miss by much!

> Compiling for the 'tcc' complier, nice and easy.

> Hitting bcc.c again, bcc-cpp now the default.

> Some bugfixes for DEC Alpha -- 64 bit longs!

Constant folding still done with 64bit longs though.

> The fopen function (and friends) is now a real function not a macro.

> Ctype.h updated to ansi.

> Libraries appear to compile properly with -O and -ansi now.

> Copt's hash string table adjusted; should now have fewer pathological cases.

> Order of copt's rule processing reversed; it now works from the top of a

rule file to the bottom. Also comment lines may be include in the match

lines. !BCC_EOS added to bcc-cc1 for 'end of statment'.

> bcc-cc1's asm("") now works in declare mode too.

> New independed cpp added, has both K&R and Ansi modes.

Changes made to the embedded cpp too to try and fix some bad bits.

> Conditional assembler added around push and pop of 'si' and 'di' if the

optimiser (and as86's optimiser) are to be run.

> Signed keyword added to bcc-cc1 for 'signed char' also works with other

int types but is usually just a noiseword.

> As86 macro syntax altered, you now don't have to include any brackets.

> Gcc warnings in ar86 cleaned up.

> Mk_dist now makes incremental patch files too.

> Update magic file.

> Various updates to the bios libc, the vt52 and ansi emulations are

now seperated (and can be both included if needed) and don't have

to be linked. Conio functions work properly in bios and msdos.

> Added -v (version)

> as86 and ld86 now delete their binary outputs if there were errors.

> Added more 'set' commands generated by '#asm' lines. The new ones begin

with '.' rather than '_' an are based off the 'bp' register rather than

the 'sp' register.

> Various unused, test and old document files removed.

> as86 modified to use normal malloc routines - no longer has limited

input file size.

> as6809 repaired, appears to work.

> as86 error display adjusted, some errors demoted to warnings.

> Complete re-write of bcc.c driver program. Should now be easier to

modify, does have more versatility so that things that were formerly

compile time options are all run time.

> #asm and #endasm now interact with statment processing inside functions.

If statments and case labels no longer need special layout however #asm

must be placed between statments now.

> The __heap_top virtual constant added, allows the -H option to be used

with the -d option in the linker.

> Conio routines added, merged with bios_getc/bios_putc routines which

now no longer exist under those names.

> monitor.out now copes with very old zimages, like the memtest86 program,

and has 'Retry' prompt for disk errors.

> msdos.s and tarboot.s loading of non-a.out executables adjusted for

dos BIN like files.

> Standalone library startup adjusted to allow execution of a '-d'

executable from DOS, if __argr.x.cflag is set this is running under

DOS.

> Compile for DOS again, disable cpm86 headers under DOS.

> Minor bugfix for as86 binary output re sizeof(int)/K&R problem.

For version 0.16.0.

> As major bugs seem to be absent 0.16.0 is escaping.

> Seperated the multi-pass optimisation from the jump extension. We now have

the -j back to it's old meaning and -O added to help shorten instructions.

> Fix for nested conditionals in the assembler.

> Fix for listing to unusual locations; assembler tried to list non-existant

lines.

> Removed lots of warning from the ar86 code. (__STDC__ flags too)

> Stop trying to strip scripts on install.

> Remove non-working versions of malloc and stdio from libc directories.

> Lots of changes in the 'bootblocks' example code.

> Updated 'make distribution' to be all in the distribution.

> bin86 Makefile adjusted so that the as86 script isn't installed with -s.

For version 0.15.0.

> Added support for archives to nm86/objdump86 and size86.

> ar86 added. Used for Linux because RedHat is broken.

> Bugfixes on utmpent and friends.

> A bit more in the manpages on how to use the assembler etc.

> Bug fixes in stdio, fp->mode cached too much, buffer type mixup.

> Altered initial make variables, you only need to modify 'PREFIX=' to allow

installs into /usr/local.

> The BIOS library has a simple MSDOS fs file reader now, based on the code

from monitor.out.

> Added bin86-0.... source distribution archive.

> Fixed bug in -t option to as/bcc (for moving the text segment)

> Lines that have a unexpected character are now listed by the assembler

not just ignored.

> Added assembly externals in as86_encap generated code.

> I appear to have bcc generating a consistant set of code fragments for

floating point operations. No floating libs though ...

> Lots of bootblocks changes including

Added lsys.com to install the dosfs boot sector under dos.

monitor.out now (finally!) loads zImage files.

Monitor.out now works with a TAR "filesystem" on a floppy.

Added two compile time options (-DTARFLOPPY and -DDOSFLOPPY) for smaller

executables to only boot linux-386 from a floppy.

Makeboot can install the mbr.

Removed the ELKS specific code from the minixfs loader, added a helper

program to load and relocate ELKS.

One config file for booting a [b]zImage.

DOSFS boot can boot any named file.

> Fixed/avoided some problems with the optimiser breaking hand optimised code.

> I've made some alterations to the header files in an effort to merge the

ELKS kernel files with fewer problems.

> Oops, Claudio says that qsort went the wrong way, hmm.

> Added some more library code for MSDOS programs, there's still more to go.

> Removed the 'libc-8086' distribution tgz file.

For version 0.14.0.

> Objdump86 utility added, also includes nm86 and size86 that work on

as86's object files and elks executables.

> Added ability to put ELKSSRC=/././. on initial make command line.

> Some bug fixes and buffering improvements for stdio2.

> Changed output of linker -m option to be more verbose (useful).

> Linker errors are now directed to STDERR on unix/elks.

> Alterations to elksemu and the C library to be closer to elks, 0.13.1+

should not need a patch to work with 0.0.60+ ELKS.

> Link symbol dump now flags local variables differently to exported.

> Fixes for libc/misc/crypt.c, they do change the values of the encrypted

password so beware.

> as86_encap now uses a static array and #defines.

> Added -t <digit> flag to as86 and bcc to move the text segment

for this object into another one.

> Moved segments 4..14 so that instead of being attached above the

data segment they now sit between the text and data segments in

the final a.out, this is where they'd be needed for medium model.

> Added -x option to bcc to prevent it linking in crt0.o.

> Added various improvemnts to the optimiser, I don't think it'll generate

illegal code now for "-O", "-O1", or "-Oi". The last inlines the functions

__get_es(), __seg_es(), __poke_es(), __peek_es() etc.

> Code generator improvement for integer multiply and shifts. (Including

making it far less keen to do multiple shifts instead of a multiply.

> Code generator fix to remove incorrect (but accepted by the assembler)

addressing modes like: mov ax,#_ar[bx]

> Been messing with boot block stuff again, still can't get it to load

zImages (bzImages ok tho). Minix.c can't load an ELKS kernel either,

it's looking like there isn't actually enough room :-(

> Fix to elksemu for breakages caused by glibc.

> Other fixes to elksemu for execve(), dup(), readdir() etc functions.

For version 0.13.0.

> Removed too eager 'typeconv.c' warning.

> Well, I just broken everything! To be exact if Dev86 sees a directory

called ${ELKSSRC:-/usr/src/elks}/include it'll assume that is the

equlivent of libc/kinclude and use that in preference. I've sent off

a patch so that elks-0.0.* should be compatible but meantime there

are bound to be lots of problems caused by shuffling of include files.

(Later: Actually doesn't seem too bad)

> Added '-g' to gcc options, make sure install has '-s' to strip symbols.

> Grrrr, missing files in bootblocks directory, I didn't have them all.

OK, as part of the dist script I'll have to do a 'make other' ...

Some other bits there too ...

> Minor alteration to opening files in ld to fix problem when share.exe

loaded under dos.

> Added Config.dflt for default libc configuration flags. I can now

re-introduce Joel's standard I/O functions ... but they haven't

been updated in a while ...

> Addition to minix.c to use allow BB to determine the track size by

trial and error (not intuit from superblock) to allow mis-sized

filesystems on a floppy. Also add some error retries to the floppy

version.

> Squeeze the minix BB a bit more, DOTS is now working again.

> Can now do 'use16 8086' in assembler instead of 'use16 86' also

'use16 80386'

> Add 'make install-ln', this installs _symbolic_links_ to the dev

directory in the normal directories. This means you don't have

to do a make install after re-compiling. But it also means the

'install' is dependent on the dev dirs.

> Add ability to use overrides on the command line of the initial make,

and have them saved, for CC, CFLAGS, LDFLAGS, PREFIX, BINDIR and LIBDIR.

Includes minor alteration to bcc.c and as86_encap.

> Added in 'objchop' as an option in the ld directory.

> The cpu type warnings were worrying some people so I've set the

initial value of the '-w' flag to off, use -w- to turn them back on.

The -W flag to bcc now does this too.

> Added the ELKS_SETUP from Ken Yap to minix.c.

> Added __ELKS__, __8086__ and __i386__ #defines for relevent bcc configs.

> Clarified some of the copyrights, esp for Bruce's stuff.

> Added a few changes to clean up compiles on an AIX/RS6000. It still

needs gnu-make installed and is only tested with gcc though.

(Because of IBM's recent contribution to increasing the popularity of GCC)

For version 0.12.0.

> Notice the change in the version numbers, as long as I'm releasing the

upto the minute patches I thought I'd better give everyone a way of

keeping track. So now the 0.X.0 are the main releases, the 0.X.Y are

interim patches.

> I've added a new output binary for ld86, it can now do the broken

relocatable a.out that bin86 produces. I don't like this but it

does let me move ld86 back to /usr/bin without breaking DOSEMU.

Note! If you've installed vsn 0.0.11 or earlier you will need to

uninstall it before installing this one.

> Altered makefiles for GNU-make 3.74, GNU-make no longer generates

automatic 'rm' commands so I have to do it manually.

> Altered makefiles again, starting to get non GNU makefile working.

> Added some cleanups to ifdef.c. (voids etc)

> Assembler now understands monadic '-' and '+' operations (for copt).

> Improved the type conversion functions, they should now work on most

machines. There may still be some problems with sizeof(long) == 8 tho,

added some warnings/traps.

> Improved the auto-detection and auto-rejection of <a.out.h> ld is more

likely to compile even if a.out.h is completely incompatible (leaving

out native support).

> Fix for stdio, there was a problem if the OS only did a partial write.

> Alter align() macros to use ssize_t iff both __STDC__ and _POSIX_SOURCE

are defined.

> Add some changes for compiling under AIX. Assember and BCC appear to work,

ld has problems with AIX's 'ar' command - problem: AIX's make and gmake

won't like the smell of a standard following ar86 command ... hmmm.

> Changes in bootblocks, minix.c can now be compiled for a hard disk (works

on dosemu, dunno about the real thing tho), fixes for mbr.s re preboot

facility. Addition to minix.c to fix number of sectors in bpb for floppy.

For version 0.0.11.

> New, most recent, version of unproto inserted.

> AAARG! First_arg_in_ax breaks stdarg.h! As a consequence printf wasn't

working, now why didn't _you_ notice! OK. printf now uses varargs, that

is more likely to work and does for printf & scanf.

> Added -Mc for 'caller saves' _without_ first_arg_in_ax. As this uses the

normal libc there are likely to be problems with library -> user callbacks.

> Added -Ml for 386 'Large linux' compile.

> Added -Mn for 'normal' elks compiles so the default for dos can be -Md

> Brand new, an optimiser has been added, it's in its early stages yet

the 8086 (plain -O) version seems ok. The 386 generator (-O3) is definitly

missing some requirements. It's probably not a good idea to use -Ml and -O.

(Later: The 8086 can generate bad code it seems, oh well)

> Some changes to the makefile, minix make will now _try_ to compile bcc,

it doesn't seem to succeed yet though. Also because of this I've gone

back over the headers, should be better on non-ansi or non-posix systems

now. BTW: minix make has no chance with compiling libc so I've added

another zip archive containing just the compiled libcs.

> Add the -a-, -j-, -g-, -u- and -w- flags to as86; specifically for -w-

to allow easy enabling of assembler warnings while using bcc.

> Bugfix for assembler 'ifc' pseudo op.

> Bugfix for preprocessor and unterminated last line of included file.

> Add minix syscall detector to elksemu, I may make it into an emulator ...

> I've split of the 8086 ELKS and i386 Linux libc stuff into seperate

directories. I expect Chad will want to take over the 8086 one for a while.

Plus some other files moved around to help new users.

For version 0.0.10.

> Some serious changes to the makefiles, practically a rewrite of them.

'make', 'make all', 'make install', 'make clean' and 'make realclean'

do the expected things. 'make distribution' should let you create the

partial and binary dirtributions from the full source.

> The makefiles now allow multiple libc binaries to co-exist.

> The makefiles now allow a _full_ compile without installing anything.

> In part because of the makefile changes a lot of files in the library

have been moved, this is a large portion of the patch size.

> ifdef.c added as part of makefile changes, I'm not quite sure if I like

this way of doing things but it's ok for the mo.

> MSDOS, in the output of *.bin files from as86 skipped areas have zeros

written not semi-random bytes.

> MSDOS (+ other machines where sizeof(char*) != sizeof(int)) problem with

macros resolved, they appear to work correctly now.

> NCC added, this is a different version of bcc with libs and include dirs

in the same format as the MSDOS driver.

This is used for 'uninstalled' compiling and also if you do:

$ ln -s `pwd`/bcc/ncc $HOME/bin/bcc

The bcc will use the 'uninstalled' include and library files for when you

don't have root access.

> -H option added to ld86, this controls the size of the heap or 'chmem'

field in the executable.

> BOOT-Blocks, makeboot can be compiled as a DOS COM, bootblock for msdos

filesystem completed, this will allow lilo, monitor.out or any Linux-86

standalone executable to be executed from an msdos floppy. Makeboot

can also install several other types of bootblock.

> Monitor.out now includes 'bzimage' command, which will boot a Linux-i386

bzImage with command line and initrd.

> 'skip.s' bootblock fixed.

> A few more functions now work in 'standalone' mode, malloc() especially.

-Rob

For version 0.0.9.

> The debian stuff has been removed again, Christoph want's to keep contol

of the debian specific files.

> I've done some changes to the makefiles, it'll now honour CC=XXX on the

make command line.

> The assembler now works again compiled under bcc, it tried to allocate

too much memory.

> Major change to the assembler, '-j' not auto-sizes jumps this requires

a change to at least 3 passes. Sometimes it'll say it needs another -j

because lengthing jumps cause others to fail, two -j's will give it lots

of passes :-)

> The second large change is an effort to identify when instructions are

not right for a specific processor and generate a warning. The use16

and use32 instructions now have an optional argument of a processor

type (86,186..686). Also bcc has a '-W' to remove the -w it passes to

the assembler.

> Altered the way bcc deals with LOCALPREFIX, now under DOS it picks this

up based on the path to the executable.

> Fixed a bug introduced by the 'cpp in asm' change in 0.0.8, bcc-cc1

wasn't compiling under bcc.

> Two new bootblocks in the 'examples' mbr.s is an MBR (no really :-))

msdos.s is unfinished but even this far allows lilo to be used on an

MSDOS filesystem floppy.

> Changed ld to _check_ the magic on files inside an archive, this cures

the problem caused by long names inserted by gnu-ar. Also it notices

if an archive has been included in an archive and will link that too.

> Changed ld to do a final check that it knows what sort of a.out.h file

it's got, if this fails '-N' is disabled.

> Ld changed so for 16 bit exes the heap is limited to 32k.

> getcwd and execvp added, sash should now work. Also added to the 386-lib

except execvp won't run scripts without '#!'

> Nasty bug with syscalls of > 3 args in 386 code fixed, none of them would

have been working correctly.

For version 0.0.8.

> Christoph Lameter <clameter@debian.org> has provided a patch for

installation using the debian packaging, I've probably broken it :-)

> Doselks has been added in, it's not that big really.

> Triggered by the debian stuff the makefiles can now create a pure

binary installation tree, nothing needed in /usr/src. If kinclude is

configured out the include directory will reference /usr/src/linuxmt

> Some good changes to the linker today, it will generate a Linux-386

(That's right, growed up linux) executable. It's still very fragile

but it does work. The '-r' option now works, but unlike bin86-0.3

it creates a _Linux_ OMAGIC file. This means that bcc -G works, the

names are mangled by ld86 such that if it was compiled with ELF the

OMAGIC will successfully link in an ELF environment. Beware older

versions of GCC-binutils can segfault in this situation.

> Bit of sneakyness for the assembler, org will accept negative values ...

> Made a few changes to idcc, I think I'll translate it to C soon.

> Fixed a couple of problems with the preprocessor WRT hashes not at the

start of a line and quotes in ifdef'd out code.

> Missed a bet in the kernel patch and module, the old one wouldn't

execute impure executables it will now.

> Fixed matching bug in elksemu, A piece of code was commented out for

some reason ... oops.

> Some of the error reporting in the linker has improved, if it can't

open libc it now says so!

> Some 386 specific stuff has been added to libc, mainly the syscall

generator, startup stuff and BCC's 386 floating point code.

> Change in malloc, Linux-386 limits +ve brk() changes to 32Mb, the malloc

will now allow for this ... Phew! grab.c will grab about 3Gb of virtual

memory, with 1Gb chunks, when compiled in 386 mode! One oddity, glibc

(quite an old one) hangs when trying to free if grab.c is compiled static.

> Hunted down the most important 16 bit dependancies in dis88, it seems to

generate a reasonable output file now. Plus a couple of fiddles in the

disassembler, personally I prefer Hex and I've added a couple of markers

for 386 code (use opr32, use adr32, seg fs/gs) and the -f flag to force

disassembly of any file.

> The i386 compile uncovered a bug in alloca, In fact the move to 386 has

been amazingly painless, practically everything so far has worked first

time or nearly so ... Wow!

> Added minimal dirent to i386-lib, elksemu now compiles under BCC-386

AND WORKS!

> Trying to compile bash, it does some hackish stuff with the preprocessor

and uncovered a couple of problems, fixed. Now I need more float stuff.

> Added for bcc-cc1, code between #asm and #endasm _is_ scanned for #defined

words and functions, it didn't effect the libc at all. Of course we now

need some way to put multiple instructions in one #define, I've nominated

'^' as the statement terminator, I didn't have many choices :-(

> Added '-t' for bcc-cc1 when bcc gets -S

-Rob

For version 0.0.7.

I've been making quite a few changes to the assembler:

The 'include' or 'get' command now works.

The '-b' and '-s' options are now quite useful for bootblocks

or encapsulated code.

The standard input is now a valid source for the assemble

(but only on 'big' machines).

Various other functions now work, macros, 'jmp near',

'jmpi qword $100000,$1000', and other bug fixes.

As86_encap script added.

Some of the 256 char line limits have been removed for non-bcc compiles.

The linker will now fail more gracefully for reversed 'org's and complain

about too large segments.

Bcc-cc1 will now compile under itself, with some limitations, and appears

to generate correct output. There are problems tho in that I think the

heap<->stack saftey margin is too short and I've disconnected all code for

floating point features.

The components will all compile and seem to work quite well using MSC 5.1

under dos and will probably compile using other dos compilers. BCC cannot

compile itself under dos because the libs to fake the unix syscalls under

dos are currently too large.

A number of fixes have been added that were apperently in another version

of the tools to aid operation on other machines, there's now a better chance

of these programs working on 'big-endian' machines.

Various bits and pieces have been added to the libs, including some time

functions (but these need a _small_ way of dealing with "DST").

-Rob