Commit Graph

25 Commits

Author SHA1 Message Date
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
f4f91ebd79 zasm: remove SYM_CTX 2019-07-22 16:13:00 -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
253674ea05 Fix broken tests
Also, make tests run in a *BSD environment
2019-07-19 14:24:35 -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
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
e18f9b53a9 zasm: add support for "$" symbol
Allows for the ".fill x-$" pattern.
2019-05-20 09:17:50 -04:00
Virgil Dupras
ae315499cb Run unit tests with zasm 2019-05-20 07:50:23 -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
3b1ef2b9af zasm: bump global symbol limit to 0x200 2019-05-19 09:54:42 -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
d47d07757e zasm: fix expr operator priority 2019-05-18 15:17:56 -04:00
Virgil Dupras
068e4327ec zasm: fix false truncation error on "-" expressions 2019-05-18 14:51:11 -04:00
Virgil Dupras
f44c3e5413 zasm: fix 3-digit hex parsing 2019-05-17 23:00:57 -04:00
Virgil Dupras
cdb6cce914 zasm: add multiplication expressions 2019-05-17 22:22:10 -04:00
Virgil Dupras
28d5ebdc8a Make apps folder into a namespace
To straighten out includes and to pave the way into zasm being part of
the same "include CFS" as parts, we make zasm includes namespaced.
2019-05-17 20:22:32 -04:00
Virgil Dupras
072aad775a zasm: don't match prefixes in symFind
Only match when full names match.
2019-05-17 13:14:16 -04:00
Virgil Dupras
92a119105d zasm: add support for "0b" literals 2019-05-17 10:34:01 -04:00
Virgil Dupras
4075c90d44 Add unit test for zasm's parse unit 2019-05-17 10:00:30 -04:00
Virgil Dupras
013a3b74c8 Add the concept of unit tests
Will be much much easier to tests new core routines without having to
re-create their context first.

Also, extract parse.asm from core.asm
2019-05-17 09:33:20 -04:00