* WARNING: Backward-incompatibility!
Previously appending using '+=' to an empty variable would result in a value
starting with a space. Now the initial space is only added if the variable
already contains some value. Similarly, appending an empty string does not
add a trailing space.
https://lwn.net/Articles/810071/
Apparently there's two versions of the ISC license; the original says "and"
while the updated one says "and/or". This was copied from the ares v115 release,
so it should be the variant byuu intended by "ISC".
Fixes#19.
When Near took down byuu.org, he also removed the images that the bsnes
README was ointing to. He gave me backups of data from the site, including the
images used on the bsnes homepage, but apparently the README used different
images hosted in a different location.
I've replaced the missing images with ones from the bsnes homepage that
look reasonable.
The official libco repository was created as a snapshopt of the then-current state of libco
in the higan repository. However, it would be a shame to lose all the
development history and changelogs that led up to this point.
This commit merges in the change history extracted from the higan repository,
including reconstructed history from the bsnes-history-kit project. Note that
many commit messages mention changes outside of libco, and some *only* mention
non-libco changes because the libco change was relatively minor compared to the
overall changes. Hopefully it's generally clear what libco changes were made and
why... but even if it isn't, this is all the information we have.
Fixes#2.
updateControls assumes that when activeMapping is set, an item from
mappingList is guaranteed to be selected. However, there are several
scenarios that break this assumption:
- changing port during an active mapping
- changing device during an active mapping
- reloading the input driver during an active mapping
In all of these cases, updateControls is eventually called. It sees an
outstanding activeMapping and proceeds to figure out the offset of the
currently selected item, but since there are no selected items it ends
up dereferncing a null pointer.
The assumption can be honored by having reloadMappings cancel the
outstanding activeMapping, thus preventing a crash.
Fixes#4.
Improves thread-switching performance using the following techniques:
- Interleave stores/loads
- Restore the stack pointer and link register as early as possible
The calling convention specifies that d8-d15 (the lower 64 bits of
vector registers q8-q15) are callee-saved. However, libco was
erroneously saving and restoring general-purpose registers x8-x15
instead.
Tim Allen