This version has a step debugger, which now completely replaces the
old trace feature. Also, we moved all of the FreeBSD-specific MI
code to loader.c, reducing the diff between this and the official
FICL distribution.
Also, export the file_findfile() function. Again, this is taken from
work in progress but frozen for the time being. Since it works, I'd
rather commit and remove any uglyness later than hide it on my tree.
allocated was not big enough, but it ended up to being used where it
was supposed to be used. The person who did that ought to be shot, but
since I'm a good person, I'll forgive myself...
PR: bin/9743
I added a FICL_TRACE-conditioned trace facility based on "see".
It is ugly because words' functions are almost all static, and ficlExec,
where the trace has to be located, can't get their pointers. So, #ifdef
this staticization, and add most of see's body into ficlExec. Duplication
of code, uglyness, etc. But it is cleanly #ifdef'ed, and works like a
charm.
It does not provide "step" facility, though, just trace. It is
tunable at run-time through "trace!". If anyone (most likely me :) ever
wants a step facility, I'll add it. Should be easy.
PR: bin/9652
Submitted by: "Daniel C. Sobral" <dcs@newsguy.com>
FICL's TYPE copies the counted string to HERE, as abial has
remarked. Answering to abial's question, this is NOT garanteed to have
enough space.
...
We have dynamic memory. Even before memory-alloc got in, we
already had dynamic memory. Use it, then! (ficlMalloc is sysdep, so I
suppose that's why it was not used for TYPE; ficl is probably designed
to work without a working ficlFree).
Submitted by: "Daniel C. Sobral" <dcs@newsguy.com>
Make TIB handling use buffer size to conform with ANS Forth.
Add ANS MEMORY-ALLOC word set.
See the PRs for extensive details.
PR: kern/9412 kern/9442 kern/9514
Submitted by: PRs from Daniel Sobral <dcs@newsguy.com>
key? ( -- flag) \ check to see if there's a key to be read from input
ms ( u -- ) \ wait that many milliseconds
seconds ( -- u ) \ get number of seconds from midnight.
'words' now outputs the list page by page - this probably should go
through libstand's pager, but will have to wait for closer integration of
built-ins with Forth...
Submitted partially by: W Gerald Hicks <wghicks@bellsouth.net>
o add fkey and fread
o eliminate fexists now that this can be expressed in HLL forth
( : fexists fopen dup -1 <> if fclose 1 else drop 0 then ; ) :-)
Once we get the ability to write files, it should be possible to do
stand-alone rescue work from the 3rd stage boot. :)
o Add fexists word to check for the presence of a file
o make fexists and fload immediate words which DTRT both interpreted
and compiled (doh!)
o add an init word which gets run at bootstrapping time to do extra
post-coldload initialization (in the default implementation, we
look for /boot/boot.4th and load it if found).
this will allow us to manage bloat in the loader by using a bytecoded HLL
rather than lots of C code. It also offers an opportunity for vendors
or others with special applications to significantly customise the boot
process without having to commit to a divergent code branch.
This early commit is to allow others to experiment with the most effective
mechanisms for integrating FICL with the loader as it currently stands.
Ficl is distributed with the following license conditions:
"Ficl is freeware. Use it in any way that you like, with the understanding
that the code is not supported."
All source files contain authorship attributions.
Obtained from: John Sadler (john_sadler@alum.mit.edu)
