| Commit message (Collapse) | Author | Age | Files | Lines |
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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.)
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Clean up the debugging flow, and go over help messages for inconsistencies.
They predate the new Readme, which takes some time to describe the x86
instruction set.
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Fix CI.
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Bugfix in scenarios where scan-next-byte needs to abort.
I'm starting to have trouble keeping strings, streams and buffered-files
straight.
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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.
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Making progress on hex1 (http://web.archive.org/web/20061108010907/http://www.rano.org/bcompiler.html)
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Colorize function names containing special characters like '?'.
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New helper: print an error message, then a numeric byte, then abort.
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New helper: printing a string to a buffered file.
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Better to use EDI as a mnemonic for 'destination'.
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Let's standardize to use opcode 39 rather than 3b by default.
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Fix CI since 4827.
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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.
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New helper: printing a byte in textual (hex) form.
This required adding instructions for bitwise shift operations.
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Showing the error bit pattern explicitly makes it more clear that it's
not possible to generate as a non-error value.
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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.
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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.
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Fix CI.
It's kind of a hassle (and wasteful) that I need to redefine 'main' in
every single layer.
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