Rich Felker 61b1e75f7d overhaul sh atomics for new atomics framework, add j-core cas.l backend ... sh needs runtime-selected atomic backends since there are a number of supported models that use non-forwards-compatible (non-smp-compatible) atomic mechanisms. previously, the code paths for this were highly inefficient since they involved C function calls with multiple branches in the callee and heavy spills in the caller. the new code performs calls the runtime-selected asm fragment from inline asm with extremely minimal clobbers, rather than using a function call. for the sh4a case where the atomic mechanism is known and there is no forward-compatibility issue, the movli.l and movco.l instructions are provided as a_ll and a_sc, allowing the new shared atomic.h to generate efficient inline versions of all the basic atomic operations without needing a cas loop.		2016-01-21 19:43:04 +00:00
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aarch64	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
arm	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
i386	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
microblaze	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
mips	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
or1k	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
powerpc	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
sh	overhaul sh atomics for new atomics framework, add j-core cas.l backend	2016-01-21 19:43:04 +00:00
x32	refactor internal atomic.h	2016-01-21 19:08:54 +00:00
x86_64	refactor internal atomic.h	2016-01-21 19:08:54 +00:00