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collapseos
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32 Commits

Author SHA1 Message Date
Virgil Dupras f41ccdbc81 Update bootstrap binaries 2019-10-17 15:47:39 -04:00
Virgil Dupras 83b314c450 zasm: lower RAM requirements 
I've tested RAM usage when self-assembling and there weren't as high
as I thought. zasm's defaults now use less than 0x1800 bytes of RAM,
making it possible, theoretically for now, for a Sega Master System
to assemble Collapse OS from within itself.
 2019-10-06 15:42:09 -04:00
Virgil Dupras e4732d79dc zasm: tighten directive detection a bit 2019-10-06 14:39:47 -04:00
Virgil Dupras f4b6c7637d zasm: rename #inc to .inc 
scas, it's not needed any more.
 2019-10-06 14:32:23 -04:00
Virgil Dupras 612323f714 zasm: add "last value" symbol (@) 2019-10-04 20:26:21 -04:00
Virgil Dupras d1735c3a73 zasm: remove last remnants of "old style" variables 
This makes zasm suitable to run from ROM.
 2019-07-25 14:02:04 -04:00
Virgil Dupras c2d84563dd zasm: allow duplicate const definition 
This will allow interesting override scenarios, adding flexibility.
 2019-07-23 16:01:23 -04:00
Virgil Dupras 1dec33e02a zasm: make symbol registry a bit more straightforward 
Instead of strings of variable length driving the iteration of the
registry, we do so through records that keep track of lengths and
counts.
 2019-07-23 15:21:42 -04:00
Virgil Dupras cdb206b7a5 zasm: fix nasty (iy+d) misparsing bug 
*sob*...
 2019-07-23 13:58:18 -04:00
Virgil Dupras b95f4c8c24 zasm: remove SYM_CTX_PTR 2019-07-22 16:34:40 -04:00
Virgil Dupras f4f91ebd79 zasm: remove SYM_CTX 2019-07-22 16:13:00 -04:00
Virgil Dupras 311d04e9aa zasm: make symbol registry easily parametrizable 
I'm about to split the global registry in two (labels and consts)
and the previous state of registry selection made things murky.
Now it's much better.
 2019-07-22 15:13:09 -04:00
Virgil Dupras 34f499184d zasm: add ".bin" directive 
Also, remove zasm/test7 because it changes too much all time time
(whenever zasm changes) and isn't precise enough. Too much noise,
not worth it.
 2019-07-21 12:58:02 -04:00
Virgil Dupras fe15bafeca zasm: fix bug with registry selection 
During expression parsing, if a local label was parsed, it would
select the local registry and keep that selection, making
subsequent global labels register in the wrong place.
 2019-07-20 18:07:52 -04:00
Virgil Dupras ff7a114736 zasm: update bootstrap bin 2019-07-02 14:12:49 -04:00
Virgil Dupras 63486126ef zasm: update bootstrap bin 2019-07-01 10:56:38 -04:00
Virgil Dupras d6b391e39a Update bootstrap binaries 2019-06-19 13:22:51 -04:00
Virgil Dupras 3bc165c8f6 Update bootstrap bin 2019-06-15 20:54:27 -04:00
Virgil Dupras 7ba8e85a4a Update bootstrap binaries 2019-06-15 15:53:03 -04:00
Virgil Dupras b742d48b75 Update bootstrap binaries 2019-06-05 19:52:56 -04:00
Virgil Dupras 78345b336e Update bootstrap bin 2019-06-03 11:14:15 -04:00
Virgil Dupras 37a167562c Update bootstrap bin 2019-06-02 14:46:48 -04:00
Virgil Dupras 6403ab1acf zasm: add support for SRL r 2019-05-30 14:46:25 -04:00
Virgil Dupras 2c80924df9 zasm: indicate include lineno in errors 2019-05-28 09:57:29 -04:00
Virgil Dupras 8def8e7c38 zasm: add lineno to error reports 
For now, top-level only
 2019-05-27 20:52:40 -04:00
Virgil Dupras e1e6d52fea zasm: add ERR_BAD_FMT 2019-05-27 11:58:12 -04:00
Virgil Dupras 412b3f374a zasm: add ERR_BAD_ARG 2019-05-27 11:22:38 -04:00
Virgil Dupras af2c561c6b zasm: begin erroring out reliably 
Up until now, invalid source input had undefined behavior. We're now
beginning to define that behavior so that zasm can be a bit more usable.
 2019-05-27 11:04:31 -04:00
Virgil Dupras c40bc329d5 zasm: fix expr returning wrong values on first pass 
To run a parseExpr on first pass would always return a false success
with dummy value because symbols are configured to always succeed on
first pass. This would make expressions like ".fill 0x38-$" so bad
things to labels because "0x38-$" wouldn't return the same thing on
first and second pass.

Revert to parsing literals and symbols after having scanned for
expressions and add a special case specifically for char literals (which
is why we scanned for literals and symbols first in the first place).
 2019-05-20 10:46:27 -04:00
Virgil Dupras e18f9b53a9 zasm: add support for "$" symbol 
Allows for the ".fill x-$" pattern.
 2019-05-20 09:17:50 -04:00
Virgil Dupras 848a7500bc zasm: add support for .fill directive 2019-05-20 08:39:53 -04:00
Virgil Dupras fa3b86a5c1 zasm now bootstraps itself without scas! 2019-05-19 20:44:19 -04:00