03c6f1d385
4949
2019-02-02 22:05:11 -08:00
0ad068dd1d
4945
2019-02-01 23:49:41 -08:00
c65dee2d99
4938
2019-01-20 23:20:34 -08:00
332cbba31f
4937
2019-01-20 22:50:44 -08:00
bf58189697
4930
2019-01-15 16:36:24 -08:00
7011322ad1
4929
...
Clean up primitives for converting from/to hex chars.
2019-01-15 14:11:26 -08:00
8472406209
4928
2019-01-14 23:16:22 -08:00
3f97166cf7
4927
2019-01-14 17:29:10 -08:00
509f0a12ca
4926
2019-01-14 17:06:10 -08:00
feec2292b5
4925
2019-01-14 16:54:41 -08:00
220ac38964
4923
...
We want slice-equal? for length-prefixed strings, not null-terminated "kernel"
strings.
2019-01-12 22:24:06 -08:00
dadae33848
4920
2019-01-11 17:50:29 -08:00
8b9dd2d1a9
4916
...
In the process of building slice primitives I found an out-of-bounds access
in write-byte.
2019-01-10 17:06:38 -08:00
74a46597aa
4913
2019-01-07 13:34:16 -08:00
aff782c429
4911
2019-01-06 12:52:33 -08:00
2eb174d697
4908
...
Fix CI.
a) Update canonical binaries.
b) Fix an out-of-bounds access in `clear-stream`. This also required supporting
a new instruction in `subx run` to load an imm8 into rm8.
2019-01-05 01:07:37 -08:00
dd9ba09a7c
4888
...
We only can't use rm32=5 when mod=0. Totally fine when it's mod=1.
2018-12-29 13:36:06 -08:00
6a7eaa81ee
4883 - rudimentary memory allocator
2018-12-28 11:14:29 -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
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
0becf53645
4844
2018-12-06 00:18:13 -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
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
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
87c606ee06
4810
2018-11-30 16:56:35 -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
31ff94214b
4774
...
Simplification.
2018-11-24 23:14:21 -08:00
732cf4e7cc
4773 - done with crenshaw chapter 2-1
...
In the process I had to fix a couple more bugs in support for disp16 instructions.
2018-11-24 23:06:55 -08:00
5f6edeea51
4768
2018-11-24 15:06:35 -08:00
e345224833
4764
2018-11-23 16:19:06 -08:00
d373c008b3
4763 - back to the 'trivial' crenshaw2-1 compiler
...
This time I've ported (and test-driven) 'GetChar' and 'GetNum'. The new
tests bring together our new testable interfaces for read() and exit().
2018-11-23 00:42:30 -08:00
fa04aebdc2
4756
...
Long-standing and long-copied typo has been messing with our exit status
on test failures.
2018-11-19 23:34:20 -08:00
bd6f1928d7
4755 - read-byte (sometimes called getchar)
2018-11-19 23:11:00 -08:00
b31455f81d
4747 - subx: 'read' primitive
2018-11-18 00:17:29 -08:00
267fd885b2
4745
2018-11-17 20:45:22 -08:00
11a5fffade
4743
2018-11-12 22:00:51 -08:00
8b0e960dbb
4741
...
Extract a helper that we'll need for 'read'.
2018-10-30 23:10:49 -07:00
b3d8c144a4
4740
2018-10-30 22:46:05 -07:00
f94442fe2d
4736
...
We'll use a common stream data structure for input and output streams.
Having separate types makes more sense in a more high-level language, where
we have type checking and where functions for handling the different types
are more concise. But in machine code the sweet spot is more toward fewer
types.
2018-10-29 16:34:47 -07:00
bb5cc54f96
4732
2018-10-28 12:45:11 -07:00
eb9087635b
4729
...
Start injecting all dependencies in the Crenshaw compiler app.
In the process I realized the non-fake code path of 'stop' had a bug.
2018-10-28 00:19:46 -07:00
Kartik Agaram