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243d7003a2
This removes the allocate_tls syscall and adds an archctl option to set the fs_base for the current thread on x86-64, since you can't set that register from userspace. enter_thread_context loads the fs_base for the next thread on each context switch. This also moves tpidr_el0 (the thread pointer register on AArch64) to the register state, so it gets properly saved/restored on context switches. The userspace TLS allocation code is kept pretty similar to the original kernel TLS code, aside from a couple of style changes. We also have to add a new argument "tls_pointer" to SC_create_thread_params, as we otherwise can't prevent race conditions between setting the thread pointer register and signal handling code that might be triggered before the thread pointer was set, which could use TLS. |
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| .. | ||
| FileSystem | ||
| POSIX | ||
| archctl_numbers.h | ||
| BeepInstruction.h | ||
| DeviceEvent.h | ||
| DeviceFileTypes.h | ||
| InodeWatcherEvent.h | ||
| InodeWatcherFlags.h | ||
| Ioctl.h | ||
| Jail.h | ||
| kcov.h | ||
| KeyCode.h | ||
| MemoryLayout.h | ||
| MousePacket.h | ||
| prctl_numbers.h | ||
| serenity_limits.h | ||
| Syscall.h | ||
| SyscallString.h | ||
| TimePage.h | ||
| ttydefaults.h | ||
| ttydefaultschars.h | ||
| Unveil.h | ||
| VirGL.h | ||
| VirtualMemoryAnnotations.h | ||