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81 Commits

Author SHA1 Message Date
Virgil Dupras
3b1bbc1751 zasm: support negative displacement for IX/IY 
Needed by #30.
 2019-10-17 15:38:11 -04:00
Virgil Dupras
8926c33ab1 Fix tools/tests/zasm/runtests.sh shebang 
It needs bash after all. On OpenBSD, /usr/sh works, but not on Ubuntu.
 2019-10-10 15:22:21 -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
1c6a7caeae recipes/sms/romasm: make zasm's memory usage fit the SMS 2019-07-23 16:50:19 -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
02c7eb0161 zasm: clarify strlen's API 2019-07-23 14:59:38 -04:00
Virgil Dupras
cdb206b7a5 zasm: fix nasty (iy+d) misparsing bug 
*sob*...
 2019-07-23 13:58:18 -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
a7afbe091e tools/tests: remove scas requirement 
I'm about to break compatibility with scas. Before I do that, I
need to adjusts tests. Instead of running scas to compare results,
we commit expected result as binaries directly in the repo.
 2019-07-20 17:13:57 -04:00
Virgil Dupras
253674ea05 Fix broken tests 
Also, make tests run in a *BSD environment
 2019-07-19 14:24:35 -04:00
Virgil Dupras
54b0602710 zasm: add support for RES and SET 2019-07-02 14:12:29 -04:00
Virgil Dupras
7cdc288ef2 zasm: print progress indicator while assembling 2019-06-19 11:42:39 -04:00
Virgil Dupras
c18d42f08b fs: further adjust to previous blkdev refactoring 
Previous refacoring broke all seek/tell within fs. fs handles now lost
the responsibility to keep track of current position. It's blkdev's job.
 2019-06-04 20:45:01 -04:00
Virgil Dupras
ae028e3a86 blockdev: make implementors "random access" 
This huge refactoring remove the Seek and Tell routine from blockdev
implementation requirements and change GetC and PutC's API so that they
take an address to read and write (through HL/DE) at each call.

The "PTR" approach in blockdev implementation was very redundant from
device to device and it made more sense to generalize. It's possible
that future device aren't "random access", but we'll be able to add more
device types later.

Another important change in this commit is that the "blockdev handle" is
now opaque. Previously, consumers of the API would happily call routines
directly from one of the 4 offsets. We can't do that any more. This
makes the API more solid for future improvements.

This change forced me to change a lot of things in fs, but overall,
things are now simpler. No more `FS_PTR`: the "device handle" now holds
the active pointer.

Lots, lots of changes, but it also feels a lot cleaner and solid.
 2019-06-04 15:36:20 -04:00
Virgil Dupras
9a72f10221 zasm: includes CFS is now built on-the-fly by zasm.sh 
This makes for a much more usable zasm linux binary that doesn't have to
be rebuilt every time apps or kernel change.
 2019-06-02 19:57:40 -04:00
Virgil Dupras
22e990ed89 Parametrize zasm linux bin's include CFS file 
... instead of embedding it in the binary itself. Additionally, add a
"zasm.sh" wrapper to faciliate zasm calls on a linux machine.
 2019-06-02 15:50:59 -04:00
Virgil Dupras
f8bd8eeaaf Make userspace parse args the same way the shell does 2019-06-02 14:05:20 -04:00
Virgil Dupras
83771b538f fs: check for file size bounds in GetC 2019-05-31 11:12:29 -04:00
Virgil Dupras
328f44814e Make blockdev pointers 32 bits 
This allows us to break through the 64K limit for includes CFS in zasm,
a limit we were dangerously close to breaking. In fact, this commit
makes us go over that limit. Right in time!
 2019-05-28 19:42:35 -04:00
Virgil Dupras
e414e600ea zasm: add ERR_DUPSYM and ERR_OOM error conditions 2019-05-27 17:45:05 -04:00
Virgil Dupras
b298e607bd zasm: implement error conditions for #inc 2019-05-27 14:21:46 -04:00
Virgil Dupras
31f7c7771d zasm: implement error conditions in .org and .fill 2019-05-27 14:16:40 -04:00
Virgil Dupras
371076190f zasm: implement error conditions in .equ 2019-05-27 14:07:07 -04:00
Virgil Dupras
436ff51c39 zasm: implement error conditions in .dw 2019-05-27 13:52:58 -04:00
Virgil Dupras
f5d4321ece zasm: implement error conditions in .db 2019-05-27 13:44:53 -04:00
Virgil Dupras
d76dd54f4b zasm: add ERR_OVFL 2019-05-27 12:12:21 -04:00
Virgil Dupras
f9118ef88e xasm: expand ERR_BAD_ARG condition 2019-05-27 12:05:42 -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
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
ae315499cb Run unit tests with zasm 2019-05-20 07:50:23 -04:00
Virgil Dupras
acddb045a5 zasm: add support for .org directive 2019-05-19 14:40:42 -04:00
Virgil Dupras
49be50b730 zasm now self-assembles! 2019-05-19 13:00:52 -04:00
Virgil Dupras
bc1496a7e3 zasm emul: bring back kernel/user distinction 
It was a bad idea to remove it. Now that I'm introducing the concept of
a per-app glue file, it becomes much easier to build emulated zasm as a
userspace app.
 2019-05-19 12:57:59 -04:00
Virgil Dupras
7fad3b0c90 Move /parts/z80 to /kernel 
Let go of that "meta os" thing. it's not as meta as I made it sound
like. It's a kernel.
 2019-05-19 11:19:41 -04:00
Virgil Dupras
78d9764005 zasm: can now assemble zasm/expr.asm! 2019-05-19 10:45:11 -04:00
Virgil Dupras
6cbce0533a zasm: can now assemble zasm/instr.asm! 2019-05-19 10:40:45 -04:00
Virgil Dupras
ea8477bb91 zasm: accept whitespaces before separating comma 2019-05-19 10:39:29 -04:00
Virgil Dupras
3b1ef2b9af zasm: bump global symbol limit to 0x200 2019-05-19 09:54:42 -04:00
Virgil Dupras
44abc79850 zasm: add support for SBC HL, ss 2019-05-19 09:54:02 -04:00
Virgil Dupras
98695f9912 zasm: de-index symRegister 
Make symRegister's logic pointer-based so we can break through the 0x100
limit.
 2019-05-19 09:06:24 -04:00
Virgil Dupras
bccf933ea9 zasm: try for regular number or symbol before parsing expr 
Previously, we would mess up literals like '-'.
 2019-05-18 21:06:31 -04:00
Virgil Dupras
723497af69 zasm: can now assemble zasm/directive.asm! 2019-05-18 20:37:34 -04:00