Have CI run on each commit in a PR, instead of just the HEAD

test

Fix: PMP checking region on CBO instructions

The spec says "The PMP access control bits shall be the same for all
physical addresses in the cache block [... else] the behavior of a CBO
instruction is UNSPECIFIED."

Thus, we only need to check the byte rs1 points to
(instead of the entire cache block).

Replace ternary operator with std:min

Add support for BF16 extensions

Fix bugs in disassembling code for cm.mva01s/mvsa01 instructions

dscr.ebreakh is now dcsr.ebreakv[su]

This change was made ages ago in the spec.

I did not actually test that the new privilege checks in ebreak and
c.ebreak are correct, but all the existing debug tests still pass.

Minor fixes (mostly related to __int128 support)

decode_macros: move 'is_aligned' from 'v_ext_macros.h'

Calling 'extension_enabled' this early during the constructor of
'processor_t' causes SIGSEGV.

Make sure that the configure decision on 128-bit is consistent during
compilation.

Also move uint128_t definition.

Modify configure.ac to generate a header that expose the support for
128-bit integers.

Implement dcsr.v and make DRET use it

This cleans up the code and avoids bugs like #1365.

So it's right next to set_privilege() which it will be combined with next.

So it's right next to set_privilege() which it will be combined with
next.

Since we're going to move the change to state->v next.

Should already be 1.

Resolves #1365