431627b242
4886
2018-12-28 21:26:42 -08:00
6a7eaa81ee
4883 - rudimentary memory allocator
2018-12-28 11:14:29 -08:00
5a9795bb66
4881
2018-12-28 08:56:21 -08:00
044b413021
4879
2018-12-28 02:07:11 -08:00
3d4fba4d12
4865
...
More mnemonic register usage in write-stream.
2018-12-10 09:55:46 -08:00
3a4d870730
4864
...
Our first buffer overflow!
2018-12-10 00:17:47 -08:00
f9ec61327a
4862
2018-12-09 23:37:34 -08:00
5262ed0de3
4861
2018-12-09 22:46:39 -08:00
42a933078c
4860 - stage 1 of SubX compiler in SubX is done!
...
I'm imagining 3 core stages total:
1. convert text hex bytes -> binary (✓)
2. pack and reorder operands
3. compute label addresses
(Not including extras like error-checking.)
2018-12-09 21:18:05 -08:00
c91d67a29b
4859
2018-12-09 21:08:06 -08:00
780d868502
4856
...
Fix CI.
2018-12-06 12:55:22 -08:00
09944ba6a8
4854
2018-12-06 12:52:38 -08:00
24e3796c23
4853
2018-12-06 12:27:06 -08:00
48140fcd3f
4851
...
Bugfix in scenarios where scan-next-byte needs to abort.
I'm starting to have trouble keeping strings, streams and buffered-files
straight.
2018-12-06 12:07:48 -08:00
272408b06b
4850
2018-12-06 11:11:43 -08:00
e9909be374
4849
2018-12-06 11:01:23 -08:00
a966881b6e
4848
2018-12-06 10:50:26 -08:00
81605224f0
4847
2018-12-06 09:41:40 -08:00
33e7c3a751
4846
...
Clean up a few things:
a) Call scan-next-byte in hex.subx with the right number of args. Turns
out tests continue to work fine if they never use the other args.
b) Tear down a test for 'stop' in the right order. Not important since we
have no EBP to restore. But can still be misleading.
c) Have 'check-ints-equal' return nothing. Handy for it to not mess up
EAX. I never use the result anyway, and the name also is imperative suggesting
callers won't expect a return value.
2018-12-06 09:34:55 -08:00
33cf1f90be
4845
2018-12-06 00:42:12 -08:00
0becf53645
4844
2018-12-06 00:18:13 -08:00
257ca35ab4
4845
...
Making progress on hex1 (http://web.archive.org/web/20061108010907/http://www.rano.org/bcompiler.html )
2018-12-06 00:16:01 -08:00
79328f9ad6
4841
...
New helper: print an error message, then a numeric byte, then abort.
2018-12-04 12:26:27 -08:00
a94b60b5cc
4840
...
New helper: printing a string to a buffered file.
2018-12-04 12:16:17 -08:00
af5797eeff
4838
...
Better to use EDI as a mnemonic for 'destination'.
2018-12-04 10:40:01 -08:00
9e03e2bd37
4837
...
Let's standardize to use opcode 39 rather than 3b by default.
2018-12-04 10:19:18 -08:00
381d80f8a4
4834
...
Fix CI since 4827.
2018-12-04 09:56:23 -08:00
a9cce7121a
4833
2018-12-04 00:30:00 -08:00
cf02c20bb0
4832
...
Let's start adding ':end' labels in all functions, just because it helps
us visualize where function calls end in traces, thanks to the '--map'
commandline argument.
2018-12-04 00:29:06 -08:00
83822d6324
4828 - writing to buffered-file
...
This is likely a sub-optimal interface, but I'm trying not to agonize.
The whole point of Mu is to permit radical changes at any point in time.
2018-12-03 17:08:53 -08:00
5e27c7f13e
4827
...
I was 'returning' a phantom value from 'write' when the underlying '_write'
returns nothing.
In general, returning counts of bytes written is not so useful for error
checking when my primitives abstract away from that. We'll come back to
error signalling later.
2018-12-03 16:44:16 -08:00
5082923e81
4826
2018-12-03 16:34:16 -08:00
1eb9cc5679
4822
...
Fix CI.
It's kind of a hassle (and wasteful) that I need to redefine 'main' in
every single layer.
2018-12-03 11:41:33 -08:00
0eb0f69616
4821
2018-12-02 22:41:28 -08:00
0043952064
4819
2018-12-02 16:58:30 -08:00
c98d4b1c6a
4818
2018-12-02 14:41:21 -08:00
f44c595267
4815
2018-12-02 11:08:30 -08:00
54e5128a14
4813
2018-12-01 12:44:10 -08:00
c7d45d918b
4812
2018-11-30 22:57:52 -08:00
87c606ee06
4810
2018-11-30 16:56:35 -08:00
9d27e966b5
4808 - clean up comments in all subx files
2018-11-30 16:45:15 -08:00
f52bc40d6f
4803
2018-11-30 11:23:08 -08:00
ee9a9237d6
4802
...
Some automated commenting cleanup. Still needs more careful manual scanning.
sed -i 's/^# 1-3/# . 1-3/' *.subx */*.subx
sed -i 's/^# op/# . op/' *.subx */*.subx
sed -i 's/# vim/# . . vim/' *.subx */*.subx
sed -i 's/^ # push args/ # . . push args/' *.subx */*.subx
sed -i 's/^ # discard args/ # . . discard args/' *.subx */*.subx
sed -i 's/^ # call/ # . . call/' *.subx */*.subx
sed -i 's/^ # prolog/ # . prolog/' *.subx */*.subx
sed -i 's/^ # epilog/ # . epilog/' *.subx */*.subx
sed -i 's/^ # save registers/ # . save registers/' *.subx */*.subx
sed -i 's/^ # restore registers/ # . restore registers/' *.subx */*.subx
sed -i 's/ operand / register /' *.subx */*.subx
2018-11-30 11:13:36 -08:00
6030d7e2e5
4801
...
Reindent all SubX code to make some room for the new comment style.
2018-11-30 10:54:42 -08:00
e9661581f0
4800
2018-11-30 10:37:14 -08:00
2b7ba2a56a
4799
2018-11-30 10:35:03 -08:00
a20b51bdb7
4797
2018-11-30 09:45:07 -08:00
c56d803cd8
4796
2018-11-30 09:43:49 -08:00
50dcc0c122
4776
...
Crenshaw compiler now runs natively as well.
It turns out I was misreading the Intel manual, and the jump instructions
that I thought take disp16 operands actually take disp32 operands by default
on both i686 and x86_64 processors. The disp16 versions are some holdover
from the 16-bit days.
This was the first time I've used one of these erstwhile-disp16 instructions,
but I still haven't tested most of them. We'll see if we run into future
issues.
2018-11-25 13:46:53 -08:00
33fdc60b16
4775
...
Start with an exactly corresponding version to Crenshaw 2-1: single-digit
numbers. The only change: we assume the number is in hex.
The next version now supports multi-digit hex numbers.
2018-11-24 23:26:14 -08:00
Kartik Agaram