libc: impl/libc_lock.h -> bits/_lock.h

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 0 insertions, 62 deletions

diff --git a/lib/libc/impl/libc_lock.h b/lib/libc/impl/libc_lock.h
deleted file mode 100644
index c6fdcbc..0000000
--- a/lib/libc/impl/libc_lock.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of Hyra nor the names of its
- *    contributors may be used to endorse or promote products derived from
- *    this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _LIBC_LOCK_H
-#define _LIBC_LOCK_H
-
-#include <bits/_types.h>
-
-typedef struct {
-    volatile __uint8_t lock;
-} __libc_spinlock_t;
-
-#if defined(__x86_64__)
-__attribute__((__always_inline__, __weak__)) inline int
-__test_and_set(__libc_spinlock_t *lock)
-{
-    int tmp = 0;
-
-    __asm__ __volatile__(
-            "lock; cmpxchgb %b2, %0"
-            : "+m" (lock->lock), "+a" (tmp)
-            : "r" (1)
-            : "cc"
-    );
-
-    return tmp;
-}
-#else
-#warn "Unimplemented arch"
-#endif
-
-#define __spinlock_def(NAME) __libc_spinlock_t NAME = {0};
-#define __spinlock_acquire(LOCKPTR) while (__test_and_set(LOCKPTR))
-#define __spinlock_release(LOCKPTR) ((LOCKPTR)->lock = 0)
-
-#endif  /* _LIBC_LOCK_H */