riscv/musl - musl - Gitea: Git with a cup of tea

History

Rich Felker 3c43c0761e fix missing synchronization in atomic store on i386 and x86_64 despite being strongly ordered, the x86 memory model does not preclude reordering of loads across earlier stores. while a plain store suffices as a release barrier, we actually need a full barrier, since users of a_store subsequently load a waiter count to determine whether to issue a futex wait, and using a stale count will result in soft (fail-to-wake) deadlocks. these deadlocks were observed in malloc and possible with stdio locks and other libc-internal locking. on i386, an atomic operation on the caller's stack is used as the barrier rather than performing the store itself using xchg; this avoids the need to read the cache line on which the store is being performed. mfence is used on x86_64 where it's always available, and could be used on i386 with the appropriate cpu model checks if it's shown to perform better.		11 years ago
..
bits	move O_PATH definition back to arch bits	11 years ago
atomic.h	fix missing synchronization in atomic store on i386 and x86_64	11 years ago
crt_arch.h	dynamic linker bootstrap overhaul	11 years ago
pthread_arch.h	add support for TLS variant I, presently needed for arm and mips	14 years ago
reloc.h	dynamic linker bootstrap overhaul	11 years ago
syscall_arch.h	use hidden visibility for i386 asm-internal __vsyscall symbol	11 years ago