GXemul Code2

Adding __builtin_expect (likely/unlikely) detection to the configure script.

Time to run test/test_netbsd_pmax_install.sh
--------------------------------------------

likely() put in the hot path of the MIPS load/store implementation
(actually unlikely()).

clang 6.0.0 without likely(): with likely():

without -flto: 244.13 seconds 242.81 seconds
with -flto: 230.?? seconds 229.42 seconds

g++ 8.3.0 without likely(): with likely():

without -flto: 232.40 seconds 232.78 seconds
with -flto: 231.88 seconds 228.56 seconds

Not very noticable, but I'll leave them in, for now.

Fix warning about undefined behavior, as printed by gcc when used with -flto.

Add an example of using setroot to play with booting, even though there is no keyboard support.

Correcting color/small font for the Playstation2 mode.

Removing old CVS Id tags.

Removing the comment about legacy mode.

Add NetBSD/sgimips screenshots (and make the OpenBSD thumbnails larger).

Minor update; include link to the 2014 blog post about a possible revival of the NetBSD port.

Making the instruction combination statistics gatherer skip C++ parts of symbols, to make it easier to read again.

Expanding the MIPS lw/sw 2-, 3-, and 4-instruction combinations (when loading/storing using the same base register) so that they are used also when emulating 64-bit CPUs such as the R4400. (Note: still lw/sw, i.e. 32-bit loads and stores, NOT ld/sd.) Also stretching it to 5-instruction-sequences.