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Author SHA1 Message Date
David Given
434eafd35d Change the predicate stuff to use costs instead; now you can use when clauses 
on leaves. Remove an iburg premature optimisation (required for above).
 2016-09-24 13:33:59 +02:00
David Given
d96ceea08a Lots of exploratory new grammar for instruction definitions and string and 
fragment emission (none of which is hooked up to anything yet).
 2016-09-24 13:08:17 +02:00
David Given
960259f0b0 Add support for labelled tree nodes. 2016-09-24 12:11:30 +02:00
David Given
4546dd5f22 Massive grammar overhaul and refactor. Hacked in support for predicates, where 
instructions can be turned on and off based on their parameters. New lexer
using a lexer. Now quite a lot of the way towards being a real instruction
selector.
 2016-09-21 00:43:10 +02:00
David Given
2183c6c622 Run through clang-format. 2016-09-20 21:00:16 +02:00
David Given
03b7202e54 Strip out surplus files. Rewrite README. 2016-09-20 20:46:45 +02:00
David Given
5cb3fbb3d3 Import iburg. 2016-09-20 20:44:51 +02:00
David Given
13c117d15d Import iburg. 2016-09-20 20:37:16 +02:00
David Given
80cb6ba927 Eliminate the RELOH2 relocation, as it never worked --- the address would be 
calculated incorrectly because of overflow errors.

Replace it with an extended RELOPPC relocation which understands addis/ori
pairs; add an la pseudoop to the assembler which generates these and the
appropriate relocation. Make good.

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-17 12:43:15 +02:00
David Given
4703db0fff Merge from default. 
--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-15 22:59:01 +02:00
George Koehler
b1d1b5e1f8 Fix bugs with memory allocation in ego. 
cf/cf_loop.c and share/put.c tried to read the next pointer in an
element of a linked list after freeing the element.  ud/ud_copy.c
tried to read beyond the end of the _defs_ array: it only has
_nrexpldefs_ elements, not _nrdefs_ elements.

These bugs caused core dumps on OpenBSD.  Its malloc() put _defs_ near
the end of a page, so reading beyond the end crossed into an unmapped
page.  Its free() wrote junk bytes and changed the next pointer to
0xdfdfdfdfdfdfdfdf.
 2016-09-09 23:37:43 -04:00
David Given
f67c98e239 Distributions are a pain --- let's not bother any more. Instead, we just tag 
the repository and download a complete snapshot, old and ancient stuff and all.
 2016-09-02 23:00:38 +02:00
David Given
612e38f1c6 Remove the old make-based build system, plus some big chunks of horribly 
obsolete protomake build system.
 2016-09-02 22:17:51 +02:00
David Given
2b6d251dec Fix a fun bug where, every now again, ego would get its temporary files mangled 
and generate invalid calls to the optimisers.

Previously ego would generate a temporary file template that looked like
/tmp/ego.A.BB.XXXXXX, call mktemp() on it to randomise the XXXXXX, and then
replace A and BB with data.

However, it used strrchr to find the A and B. Which would fine, except when
mktemp produced an A or a B in the randomised part...

This code was written on 4 March 1991. I was 16.
 2016-08-22 23:53:01 +02:00
David Given
2a95b1c5e3 Forgot to check a file in. 2016-08-22 22:45:32 +02:00
David Given
5bae29a00c ego now builds and is used. 
This needed lots of refactoring to ego --- not all platforms have ego descr
files, and ego will just crash if you invoke it without one. I think originally
it was never intended that these platforms would be used at -O2 or above.

Plats now only specify the ego descr file if they have one.
 2016-08-21 22:01:19 +02:00
David Given
84ee7c9cc4 Fix linking bug where em_decode would generate binary data instead of text. 2016-08-21 20:27:52 +02:00
David Given
2b2bd93e44 Run through clang-format. 2016-08-21 20:08:05 +02:00
David Given
44b6421519 Run through clang-format. 2016-08-21 19:53:14 +02:00
David Given
671bf250f5 Run through clang-format. 2016-08-21 19:46:19 +02:00
David Given
918f300513 Run through clang-format. 2016-08-21 19:38:54 +02:00
David Given
1b66b63eae Run through clang-format. 2016-08-21 19:38:02 +02:00
David Given
3584ddb6e9 Push through clang-format. 2016-08-21 19:34:54 +02:00
David Given
a4f136f999 Run through clang-format. 2016-08-21 18:51:36 +02:00
David Given
03a0b182c4 Push em_ego.c through clang-format before working on it. 2016-08-21 18:45:25 +02:00
David Given
53c9731036 aal doesn't build the ranlib table if you don't set -DAAL. 2016-08-20 14:04:46 +02:00
David Given
f561b94b49 Print hex numbers actually properly this time. 2016-08-20 14:02:12 +02:00
David Given
7b8d9e2d0e Fix compiler warnings and 64bitisms. 2016-08-14 23:01:12 +02:00
David Given
a42939df50 LED builds now. 2016-08-14 14:40:01 +02:00
David Given
4d24666432 Move util/data into modules/src/em_data, for consistency with the other 
modules.
 2016-08-14 14:09:38 +02:00
David Given
262c5fedcf Biggish refactor to break cycles; my build rules were full of them. cpm builds, 
which requires top and topgen.
 2016-08-14 01:39:40 +02:00
David Given
0d77cb8279 We can build our first C file. 2016-08-07 21:56:53 +02:00
David Given
5e84be70fd Massive ackbuilder refactor --- cleaner and more expressive. Lists 
are automatically flattened (leading to better build files), and the
list and filename functions are vastly more orthogonal.
 2016-08-04 23:51:19 +02:00
David Given
b2bb4ce3b2 Builds libend (the simplest library). Becoming obvious I need to rework the way 
ackbuilder deals with lists.
 2016-07-30 00:39:22 +02:00
David Given
363d13cc2f C preprocessor; tabgen; now the pc86 boot.s builds using the ack 
toolchain.
 2016-07-29 00:22:49 +02:00
David Given
f9c77fca03 Replace the hacky cflags variable with an equally hacky but vastly 
more useful magic vars variable.
 2016-07-27 00:10:15 +02:00
David Given
cdeea836f2 Replaced the fairly complex environment code with a much simpler 
emitter object.
 2016-07-26 23:43:31 +02:00
David Given
a8a9d1bbfa yacc, ncgg; platform ncg builds now. 2016-07-26 23:35:30 +02:00
David Given
bff5c4019c Baby steps towards building a platform --- make the assembler work. 
Add ackbuilder support for C preprocessor files and yacc.
 2016-07-24 00:50:02 +02:00
David Given
2770a83837 More programs, more libraries. src/modules build files are now saner. 2016-07-23 00:30:31 +02:00
David Given
1fdc69fb97 cemcom.ansi now builds. 2016-07-19 23:43:14 +02:00
David Given
2d2497c318 ackbuilder rules files now require absolute paths in external variables 
(otherwise commands which change directory don't work).
 2016-07-18 23:16:27 +02:00
David Given
bcf3408e36 More stuff builds; almost the C compiler now. 2016-07-14 23:54:13 +02:00
David Given
d805052205 All the amisc binaries now build. 2016-06-19 09:32:45 +02:00
David Given
2af8568cc3 First draft at installables; not very satisfactory. make bugs with multiple 
output targets and parallelism?
 2016-06-16 05:26:44 +02:00
David Given
09554cb324 installable works, although it's a bit kludgy. Change the : separator to + 
because : is special in make and non of the others I could think of would work.
 2016-06-14 07:34:14 +02:00
David Given
605651776e We can build a real program now! 2016-06-12 20:59:43 +02:00
David Given
88bd7ce126 Remove defunct pmfiles. 
--HG--
branch : default-branch
 2016-06-03 13:56:50 +02:00
David Given
ef8e6e25e0 Fix a whole pile of issues related to the failed attempt to increase 
the number of types of relocation possible in the object file. (Now,
hopefully, working.)

Also change the object serialiser/deserialiser to never try to read or
write raw structures; it's way safer this way and we don't need the
performance boost any more.

--HG--
branch : default-branch
 2016-03-18 21:46:55 +01:00
David Given
fd7e9f9046 Fix an insidious 64-bitness bug which was causing incorrectly optimised code. 
--HG--
branch : default-branch
 2016-03-17 22:30:24 +01:00