aboutsummaryrefslogtreecommitdiff
path: root/lib/mlibc/sysdeps/dripos/generic/thread.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/mlibc/sysdeps/dripos/generic/thread.cpp')
-rw-r--r--lib/mlibc/sysdeps/dripos/generic/thread.cpp53
1 files changed, 0 insertions, 53 deletions
diff --git a/lib/mlibc/sysdeps/dripos/generic/thread.cpp b/lib/mlibc/sysdeps/dripos/generic/thread.cpp
deleted file mode 100644
index 42cd758..0000000
--- a/lib/mlibc/sysdeps/dripos/generic/thread.cpp
+++ /dev/null
@@ -1,53 +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 <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);
- }
-
- 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