diff options
Diffstat (limited to 'lib/mlibc/sysdeps/managarm/x86_64/thread.cpp')
-rw-r--r-- | lib/mlibc/sysdeps/managarm/x86_64/thread.cpp | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/lib/mlibc/sysdeps/managarm/x86_64/thread.cpp b/lib/mlibc/sysdeps/managarm/x86_64/thread.cpp deleted file mode 100644 index 88f1bf3..0000000 --- a/lib/mlibc/sysdeps/managarm/x86_64/thread.cpp +++ /dev/null @@ -1,56 +0,0 @@ -#include <mlibc/thread-entry.hpp> -#include <mlibc/all-sysdeps.hpp> -#include <mlibc/tcb.hpp> -#include <bits/ensure.h> -#include <sys/mman.h> -#include <errno.h> -#include <stdint.h> -#include <stddef.h> - -extern "C" void __mlibc_enter_thread(void *entry, void *user_arg, Tcb *tcb) { - // Wait until our parent sets up the TID. - while(!__atomic_load_n(&tcb->tid, __ATOMIC_RELAXED)) - mlibc::sys_futex_wait(&tcb->tid, 0, nullptr); - - if(mlibc::sys_tcb_set(tcb)) - __ensure(!"sys_tcb_set() failed"); - - tcb->invokeThreadFunc(entry, user_arg); - - auto self = reinterpret_cast<Tcb *>(tcb); - - __atomic_store_n(&self->didExit, 1, __ATOMIC_RELEASE); - mlibc::sys_futex_wake(&self->didExit); - - mlibc::sys_thread_exit(); -} - -namespace mlibc { - -static constexpr size_t default_stacksize = 0x200000; - -int sys_prepare_stack(void **stack, void *entry, void *user_arg, void *tcb, size_t *stack_size, size_t *guard_size, void **stack_base) { - if (!*stack_size) - *stack_size = default_stacksize; - *guard_size = 0; - - if (*stack) { - *stack_base = *stack; - } else { - *stack_base = mmap(nullptr, *stack_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - if(*stack_base == MAP_FAILED) { - return errno; - } - } - - uintptr_t *sp = reinterpret_cast<uintptr_t *>(reinterpret_cast<uintptr_t>(*stack_base) + *stack_size); - - *--sp = reinterpret_cast<uintptr_t>(tcb); - *--sp = reinterpret_cast<uintptr_t>(user_arg); - *--sp = reinterpret_cast<uintptr_t>(entry); - *stack = reinterpret_cast<void*>(sp); - return 0; -} - -} //namespace mlibc |