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collapseos
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251 Commits

Author SHA1 Message Date
Virgil Dupras ff281f69a8 forth: add "UNWORD" flag 
Also, reorder word fields so that the flag field is more easily accessible.
 2020-03-12 11:39:27 -04:00
Virgil Dupras 97dcad9b15 recipes/sms/kbd: use Collapse OS' AVR assembler 2020-02-26 23:10:43 -05:00
Virgil Dupras 6224ea2fe9 zasm: use printcrlf instead of hardcoded CRLF 2020-02-23 18:52:25 -05:00
Virgil Dupras 7ca54d179d lib/expr: make EXPR_PARSE "tail" HL 
Things are now much simpler.
 2019-12-30 19:24:53 -05:00
Virgil Dupras dcb96aefe9 lib/parse: remove parseHexPair 
Also, make parseHexadecimal "tail" (HL). Soon, all routines in lib/parse
will do that, making the life of lib/expr easier.
 2019-12-29 21:56:56 -05:00
Virgil Dupras 346bcc3d3d zasm: don't use lib/args 
This unit is being removed.
 2019-12-29 20:56:13 -05:00
Virgil Dupras 15628da7de lib/expr: make EXPR_PARSE put result in DE instead of IX 
Finally getting rid of this bad mistake of using IX for this.
 2019-12-29 17:37:04 -05:00
Virgil Dupras 6d88c3a754 parseExprDE --> parseExpr 2019-12-23 19:13:44 -05:00
Virgil Dupras 476178ee7c zasm: parseExpr --> parseExprDE 2019-12-23 18:44:55 -05:00
Virgil Dupras cc754e12aa parseExpr --> parseExprDE: easy ones 
Those replacements were trivially equivalent. For the other ones, an
examination of the context is necessary.
 2019-12-23 15:59:55 -05:00
Virgil Dupras 98ca338aba avra: add LD/ST 2019-12-22 21:50:20 -05:00
Virgil Dupras 51e500e8da avra: avoid pgm addr truncation error on first pass 2019-12-22 19:44:46 -05:00
Virgil Dupras b955a67daa avra: add TST 2019-12-22 19:24:36 -05:00
Virgil Dupras 6e1e8e0e59 avra: add LSL 2019-12-22 18:36:15 -05:00
Virgil Dupras 8ded02bc78 avra: fix misordered MOV, MUL, NEG and NOP 2019-12-22 18:35:08 -05:00
Virgil Dupras f54e10f9fd avra: add CALL and JMP 2019-12-22 15:54:46 -05:00
Virgil Dupras 10b925e0e0 avra: add BCLR and BSET 2019-12-22 15:11:15 -05:00
Virgil Dupras 1771ee8da7 avra: add SER 2019-12-22 15:01:08 -05:00
Virgil Dupras 0a9ac27cf6 avra: add SBIC and SBIS 2019-12-22 14:55:38 -05:00
Virgil Dupras a9dcba5793 avra: add CBR instruction 2019-12-22 14:45:10 -05:00
Virgil Dupras c968995ec0 avra: add CBI and SBI 
This completes instruction support for the Blink tn45 example.
 2019-12-15 20:51:31 -05:00
Virgil Dupras 5c43988649 avra: code consolidation 2019-12-15 20:15:44 -05:00
Virgil Dupras b130cac635 avra: code consolidation 2019-12-15 19:17:03 -05:00
Virgil Dupras 52359a4e42 avra: a little code deduplication 2019-12-15 18:52:00 -05:00
Virgil Dupras e9c692ed50 avra: a litte bit of code deduplication 2019-12-15 18:34:14 -05:00
Virgil Dupras 2652c81519 avra: make CLR work properly 2019-12-15 16:43:32 -05:00
Virgil Dupras 20861767e6 avra: generalize arg swapping behavior 2019-12-15 16:36:43 -05:00
Virgil Dupras 14fbfa2967 avra: small _parseArgs refactoring 
Take argspec pairs directly as an argument instead of taking a
pointer to an argspec pair.
 2019-12-15 16:25:16 -05:00
Virgil Dupras 62eb5589c3 avra: refactor instruction tbl 
The instruction table is now beefier and has redundant data, but
this simplifies processing. This should simplify upcoming work.
 2019-12-15 15:53:28 -05:00
Virgil Dupras aa8df95f7d Add "avr/" includes folder 
Also, add a "real world" example in AVRA tests, a blink program on
a ATtiny45. Some instructions are commented out because they aren't
implemented yet, but not many.

The output of the program has been verified against AVRA's own
output.
 2019-12-15 09:38:01 -05:00
Virgil Dupras 64935d8b40 avra: add IN and OUT instructions 2019-12-15 08:43:59 -05:00
Virgil Dupras ab578159b7 avra: refactor args parsing 
This costs us a bit of space for now but should make things a lot
simpler down the road, especially with "alias ops" which are simple
syntactic sugar for another op.
 2019-12-14 15:17:55 -05:00
Virgil Dupras fa75f30ffb avra: add RJMP and RCALL instructions 2019-12-14 12:28:27 -05:00
Virgil Dupras 33c480a5dd avra: remove useless instrBRBits table 
I had written this when trying different approaches to adding BR and
I forgot to remove it.
 2019-12-14 09:41:36 -05:00
Virgil Dupras a5efc695e9 avra: add "Rd + bit" instructions 2019-12-14 09:33:46 -05:00
Virgil Dupras c696fcbce4 avra: add "with immediate" instructions 2019-12-14 09:05:38 -05:00
Virgil Dupras 4b9712a224 avra: add branching instructions 2019-12-13 22:49:15 -05:00
Virgil Dupras 57c1a10434 avra: first steps 2019-12-13 17:38:40 -05:00
Virgil Dupras e691dab070 zasm: little drive-by optimization 
Use IX directly for argspec rows instead of going through DE. It saves a bit
of processing. The code was this way because I initially didn't use IX at all,
so as code evolved, that DE translation stayed as an artifact.
 2019-12-13 10:54:01 -05:00
Virgil Dupras 0d7693a163 core: remove writeHLinDE 
It wasn't used much so I inlined it.
 2019-12-13 09:56:23 -05:00
Virgil Dupras 1b01f13105 lib/expr: refactor for easier operator addition 2019-11-22 14:45:12 -05:00
Virgil Dupras fd5b2ab856 Put app-common documentation in apps/README.md 2019-11-22 14:01:16 -05:00
Virgil Dupras 3f3dd9141e basic: allow multiple args in print 2019-11-20 21:02:11 -05:00
Virgil Dupras f5b04fc02f basic: add expression support to print 
Again, same thing as in zasm.
 2019-11-18 15:52:44 -05:00
Virgil Dupras 0bd58fd178 basic: parse hex, binary and char literals 
Same thing as in zasm.
 2019-11-18 15:22:09 -05:00
Virgil Dupras 1cea6e71e0 basic: add a print cmd 
It can only print a decimal literal. But still, that's a big step because
I hadn't implemented decimal formatting yet.
 2019-11-18 13:40:23 -05:00
Virgil Dupras 019d05f64c Make the shell a userspace app 
That's my mega-commit you've all been waiting for.

The code for the shell share more routines with userspace apps than with kernel
units, because, well, its behavior is that of a userspace app, not a device
driver.

This created a weird situation with libraries and jump tables. Some routine
belonging to the `kernel/` directory felt weird there.

And then comes `apps/basic`, which will likely share even more code with the
shell. I was seeing myself creating huge jump tables to reuse code from the
shell. It didn't feel right.

Moreover, we'll probably want basic-like apps to optionnally replace the shell.

So here I am with this huge change in the project structure. I didn't test all
recipes on hardware yet, I will do later. I might have broken some...

But now, the structure feels better and the line between what belongs to
`kernel` and what belongs to `apps` feels clearer.
 2019-11-15 15:37:49 -05:00
Virgil Dupras cdd0b64570 Modify userspace .org and RAMSTART expectations 
Instead of expecting a `USER_CODE` symbol to be set, we expect `.org` to be
set in all userspace glue code. This gives us more flexibility with regards to
how we manage that.

Moreover, instead of making `USER_RAMSTART` mandatory, we make it default to
the end of the binary, which is adequate in a majority of cases.

Will be useful for my upcoming mega-commit... :)
 2019-11-15 10:33:13 -05:00
Virgil Dupras d74b85f146 zasm: allow .org to be specified from command line 
Also important for upcoming mega commit...
 2019-11-15 09:57:53 -05:00
Virgil Dupras e5255d22f9 zasm: make .org affect "@" symbol 2019-11-15 08:59:26 -05:00