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musl/arch

History

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.		10 years ago
..
aarch64	refactor internal atomic.h	10 years ago
arm	refactor internal atomic.h	10 years ago
i386	refactor internal atomic.h	10 years ago
microblaze	refactor internal atomic.h	10 years ago
mips	refactor internal atomic.h	10 years ago
or1k	refactor internal atomic.h	10 years ago
powerpc	refactor internal atomic.h	10 years ago
sh	overhaul sh atomics for new atomics framework, add j-core cas.l backend	10 years ago
x32	refactor internal atomic.h	10 years ago
x86_64	refactor internal atomic.h	10 years ago