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Author SHA1 Message Date
David Given
bb9aa030a5 Procedure compilation now happens after the entire EM file has been read in (so 
that we can look inside data blocks which might be defined in the future...
sigh, csa and csb). csa and csb no longer generate invalid IR.
 2016-09-24 01:04:00 +02:00
David Given
ed67d427c9 Replaced the block splicer with a trivial block eliminator (which rewrites 
jumps to blocks which contain only a jump). Don't bother storing the bb graph
in the ir nodes; we can find it on demand by walking the tree instead ---
slower, but much easier to understand and more robust. Added a terrible map
library.
 2016-09-23 23:59:15 +02:00
David Given
f8bbf9e87d Each pass now lives in its own source file; much cleaner. 2016-09-23 21:07:16 +02:00
David Given
9077baa850 Add a bodged in algorithm for converting basic block communication from stacked 
variables to SSA. Also add dead block removal and block splicing. IR code is
much better now.
 2016-09-22 23:19:29 +02:00
David Given
6a74cb2e11 Tracing cleanup. Simplified the IR code. Some more opcodes. 2016-09-22 00:15:48 +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
36d7d1ee4e Create hacky fake basic blocks for data fragments, used to track which 
instruction labels descriptor blocks refer to; this allows csa and csb to know
where they're going.
 2016-09-20 00:19:39 +02:00
David Given
dcba03646b Treebuilder now gets to the bottom of my test file, merrily generating 
(probably horribly broken) IR.
 2016-09-19 23:30:41 +02:00
David Given
6ce2495aeb Store the EM code up front and build the basic block graph *before* 
generating the IR code. Lots more IR code.
 2016-09-19 23:06:59 +02:00
David Given
176cd7365c Archival checking of the half-written IR treebuilder. 2016-09-18 23:24:54 +02:00
David Given
f992eb28ac ANSIise to fix warnings. 2016-09-18 00:23:42 +02:00
David Given
24380e2a93 Abstract out the EM reader; skeleton of the tree builder. 2016-09-18 00:02:16 +02:00
David Given
2eee391aef Basic skeleton of em parser. 2016-09-17 22:21:47 +02:00
David Given
52ad82f8b9 Merge pull request #3 from kernigh/ego-fix 
Fix bugs with memory allocation in ego.
 2016-09-10 11:25:21 +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
8c94b1316c Add unlink system call. 2016-09-04 19:23:02 +02:00
David Given
56e13e24e0 Cleanup some stray files. 2016-09-03 19:22:38 +02:00
David Given
1b8df04e58 Add modeline, fix formatting. 2016-09-03 19:17:09 +02:00
David Given
95ad06849b Updated. 2016-09-03 19:07:12 +02:00
David Given
de2f99dc1a More documentation. 2016-09-03 19:01:47 +02:00
David Given
ea4142daee First half of the ackbuilder documentation. 2016-09-03 01:04:16 +02:00
David Given
ff9bf5b08a Makefiles are now slightly less inaccurate. Does actually seem to do sensible 
incremental builds now. I loathe make.
 2016-09-03 00:20:11 +02:00
David Given
de7023dd61 Add an install target. 2016-09-02 23:03:57 +02:00
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
96e7447bfa Clean up the top level makefile. 2016-09-01 23:36:39 +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
08823a172c filenamesof() an installable now returns all installed files, not just the ones 
at the top level (necessary to make a lot of the dependency stuff work when
using tools which depend on installables).
 2016-08-21 21:55:21 +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
1a7b4f8729 Build the examples when doing a normal build; this exercises the compiler as a 
whole and is one step further towards a proper test suite.
 2016-08-20 14:05:24 +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
856eb120b3 Add files which got missed in the initial build pass. 2016-08-20 14:04:17 +02:00
David Given
edee22510b liblinux is no more; its files are now in libsys. 2016-08-20 14:03:49 +02:00
David Given
52eaf753b6 rpi has a time() function; don't try to call gettimeofday(). 2016-08-20 14:03:19 +02:00
David Given
f561b94b49 Print hex numbers actually properly this time. 2016-08-20 14:02:12 +02:00
David Given
204f932ed2 Raspberry Pi backend now builds. 2016-08-20 12:40:13 +02:00