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63473cc2e3
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72 Commits

Author SHA1 Message Date
Virgil Dupras
63473cc2e3 blockdev: make selection structure opaque 
I'm about to change that structure and I don't want fs to be messed up
by this. I'm proceeding step by step...
 2019-06-04 09:56:36 -04:00
Virgil Dupras
50a26f6e39 recipe/rc2014/zasm: new recipe 2019-06-03 13:35:21 -04:00
Virgil Dupras
dfe19e20e4 Includes work fine when assembling from the shell 2019-06-03 11:24:52 -04:00
Virgil Dupras
7ae29015de tools/emul: add hex representation to debug output 
My mind isn't so good at decimal -> hex translations. It helps to have
this...
 2019-06-03 11:16:06 -04:00
Virgil Dupras
082fa3431d We can now assemble source files from within the shell! 2019-06-03 11:15:07 -04:00
Virgil Dupras
78345b336e Update bootstrap bin 2019-06-03 11:14:15 -04:00
Virgil Dupras
40b3d5e11e tools/emul/shell: copy user.h in its cfsin 
This way, we can compile apps from within the shell that run on the
shell.
 2019-06-03 09:26:28 -04:00
Virgil Dupras
bed7032ee5 pgm: have its own file handle 2019-06-03 09:25:17 -04:00
Virgil Dupras
ecbb77072e tools/emul/shell: allow the growing of fsdev 2019-06-03 08:42:08 -04:00
Virgil Dupras
f511289a3a tools/emul: make shell's cfsin always have all apps compiled in it 2019-06-03 08:34:29 -04:00
Virgil Dupras
04bf2117b2 tools/emul: re-organize .h files 
What used to be `tools/emul/user.h` was in fact specific to zasm, so I
moved it there.

To avoid name confusion, I renamed what used to be kernel.h and user.h
to kernel-bin.h and user-bin.h.
 2019-06-03 08:12:44 -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
02954af570 Simplyfy the creation of includes.cfs 
The next step is to generate them on-the-fly.
 2019-06-02 16:47:17 -04:00
Virgil Dupras
a4e45d1a75 zasm: make fsdev buffer larger 
Now that we don't sed out the comments any more, we busted the buffer.
 2019-06-02 16:46:44 -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
37a167562c Update bootstrap bin 2019-06-02 14:46:48 -04:00
Virgil Dupras
21c677a950 Make parseArgs not expect a leading space 2019-06-02 14:46:07 -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
73c3fc7947 shell/stdio: decouple from blkdev (again) 
Move load/save to blkdev_cmds and add a new "poke" builtin shell cmd
that is the mirror of "peek" and strictly uses stdio (no blkdev
involved).

This allows us to slim the minimal OS size but, more importantly, change
the behavior of "load" so that we don't expect GetC to block until Z is
set. This way, using "load X" with X being larger than the blkdev size
won't block forever.

This also brings our RC2014 minimal kernel below the 1K mark again.
 2019-06-02 11:06:38 -04:00
Virgil Dupras
88bf98321e fs: adjust to DE->IX change in recipe/emul glue code 2019-06-02 10:18:03 -04:00
Virgil Dupras
2e8af376e3 pgm: new kernel module 
The pgm module implements a shell hook so that when an unknown command
is typed, we look into the mounted filesystem and look for a file with
the same name as the command. If we find one, we load it in memory and
run it.
 2019-05-31 14:54:15 -04:00
Virgil Dupras
83771b538f fs: check for file size bounds in GetC 2019-05-31 11:12:29 -04:00
Virgil Dupras
cdc865f8c6 tools/emul/shell: add debug output 2019-05-30 14:55:16 -04:00
Virgil Dupras
6403ab1acf zasm: add support for SRL r 2019-05-30 14:46:25 -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
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
8923fefeff Update docs 2019-05-20 12:11:45 -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
207adbc2f8 tools/emul: add "make rescue" command 2019-05-20 08:58:53 -04:00
Virgil Dupras
848a7500bc zasm: add support for .fill directive 2019-05-20 08:39:53 -04:00
Virgil Dupras
c586c0d63c Make the shell emulator be built by zasm 2019-05-20 07:29:19 -04:00
Virgil Dupras
fa3b86a5c1 zasm now bootstraps itself without scas! 2019-05-19 20:44:19 -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
d9fff16157 zasm emul: get rid of the kernel/user distinction 
Made things complicated for nothing.
 2019-05-19 09:14:40 -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
f44c3e5413 zasm: fix 3-digit hex parsing 2019-05-17 23:00:57 -04:00
Virgil Dupras
157ac03e25 zasm: can now assemble zasm/util.asm! 2019-05-17 20:47:43 -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
93e40aeb09 Strip comments out of code before packing CFS 
This shrinks the CFS size to 21k from nearly 64K. This will allow me to
kick the can down the road a bit with regards to supporting storage
seek/tell greater than 64K.

I'll get to it, but first, I want to assemble zasm with zasm!
 2019-05-17 19:54:35 -04:00
Virgil Dupras
807bd70b63 zasm emul: add dumpSymbolTable debug routine 
Very helpful...
 2019-05-17 13:22:45 -04:00
Virgil Dupras
7083116379 zasm: remove JUMP_ prefixes 
They serve no purpose and make the code less flexible.
 2019-05-17 09:50:11 -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
Virgil Dupras
45b8e84e2a shell: de-macro-ize 2019-05-17 08:21:37 -04:00
Virgil Dupras
56760b5aba stdio: de-macro-ize 2019-05-17 08:14:19 -04:00