1 files changed, 43 insertions, 1 deletions
diff --git a/lib/libc/internal/include/__thread.h b/lib/libc/internal/include/__thread.h
index 7639707a..3c68f8dd 100644
--- a/lib/libc/internal/include/__thread.h
+++ b/lib/libc/internal/include/__thread.h
@@ -1,8 +1,50 @@
 #ifndef __LIBC_THREAD_H
 #define __LIBC_THREAD_H
 
+#include <stdatomic.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define THREAD_STACK_SIZE (1024 * 1024)
+#define THREAD_GUARD_SIZE 8192
+
+enum __thread_state { THREAD_STATE_EXITED, THREAD_STATE_JOINABLE, THREAD_STATE_DETACHED };
+
+struct tls {
+	void *data;
+	size_t length;
+	size_t size;
+	size_t align;
+};
+
 struct __thread_self {
-	int tid;
+	struct __thread_self *self;
+
+	/* Backing mapping for this thread (used by thrd_join/thrd_detach to munmap safely) */
+	void *map_base;
+	size_t map_size;
+
+#ifdef __aarch64__
+	uintptr_t *dtv;
+	uintptr_t canary;
+#endif
+
+	long tid;
+	int res;
+	int errno_v;
+	volatile int state;
+
+#ifdef __x86_64__
+	uintptr_t canary;
+	uintptr_t *dtv;
+#endif
 };
 
+void __libc_tls_copy(void *);
+
+#if defined(__x86_64__)
+long __clone(long (*fn)(void *), void *arg, unsigned long flags, void *child_stack, long *ptid, void *newtls,
+	     long *ctid);
+#endif
+
 #endif