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new `does_not_decode_invalid_registers` fuzzer found other bugs! the
384-bit accesses for 128b keylocker instructions are an
otherwise-unknown size and had a memory size of `BUG`. they are not
bugs. give the memory size a real name.
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* the first four 1-byte registers, `al`, `cl`, `dl`, `bl`, can be
constructed in two ways that produce "identical" `RegSpec` that are..
not.
e.g. `RegSpec::al() != Regspec::rb(0)` even though
`RegSpec::al().name() == RegSpec::rb(0).name()`.
this corrects the `rb` constructor at least, but instructions like
`4830c0` and `30c0` still produce incompatible versions of `al`.
* also fix register numbering used explicit qword-sized RegSpec
constructors, r12 and r13 used to produce r8 and r9
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this request/suggestion comes from
[github](https://github.com/iximeow/yaxpeax-x86/issues/29)! thank you!
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this includes a `Makefile` that exercises the various crate configs.
most annoyingly, several doc comments needed to grow
`#[cfg(feature="fmt")]` blocks so docs continue to build with that
feature enabled or disabled.
carved out a way to run exhaustive tests; they should be written as
`#[ignore]`, and then the makefile will run even ignored tests on the
expectation that this will run the exhaustive (but slower) suite.
exhaustive tests are not yet written. they'll probably involve spanning
4 byte sequences from 0 to 2^32-1.
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not only did the instruction have wrong data, but if displayed, the
formatter would panic.
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in the process, fix 64-bit rex-byte limit, 32/16-bit mode mask reg limit
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so multiplying to expand EVEX compressed offsets can overflow, and that
needs to be okay.
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these instructions had memory sizes reported for the operand, if it was
a memory operand, but for versions with non-memory operands the decoded
`Instruction` would imply that non memory access would happen at all.
now, decoded instructions in these cases will report a more useful
memory size.
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while x86 branches of immediates are all relative to PC, other
architectures may have absolute branches to immediate addresses, leaving
this syntax ambiguous and potentially confusing. yaxpeax prefers to
write relative offsets `$+...` as a rule, so uphold that here.
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