| Commit message (Collapse) | Author | Age | Files | Lines |
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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
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Reindent all SubX code to make some room for the new comment style.
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Another attempt at picking colors for the 5 different levels of comments.
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Experimenting with putting code examples higher up in the Readme. Thanks
Pelle Hjek for the feedback: http://arclanguage.org/item?id=20875.
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Thanks Pelle Hjek for the feedback: http://arclanguage.org/item?id=20870
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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.
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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.
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Simplification.
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In the process I had to fix a couple more bugs in support for disp16 instructions.
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I stopped handling disp16 at some point, and using instructions with such
an operand messes up segment alignment when generating ELF binaries.
I don't test my ELF generation. This is a sign that maybe I should start.
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This time I've ported (and test-driven) 'GetChar' and 'GetNum'. The new
tests bring together our new testable interfaces for read() and exit().
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Bugfix: I forgot about ELF segment offsets when implementing VMAs. Eventually
segments grew large enough that I started seeing overlaps.
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Let's start highlighting all global variables in Red. Assembly programming
has a tendency to over-use them. They're a necessary evil, but we should
minimize the number of functions that access them.
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Long-standing and long-copied typo has been messing with our exit status
on test failures.
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