/* * Copyright (c) 2007 Jakub Jermar * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - 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. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /** @addtogroup libc * @{ */ /** @file */ #ifndef _LIBC_TLS_H_ #define _LIBC_TLS_H_ #include <libarch/tls.h> #include <stdbool.h> #include <stddef.h> #include <stdint.h> static inline void __tcb_reset(void) { __tcb_raw_set(NULL); } static inline void __tcb_set(tcb_t *tcb) { __tcb_raw_set((uint8_t *)tcb + ARCH_TP_OFFSET); } static inline tcb_t *__tcb_get(void) { return (tcb_t *)((uint8_t *)__tcb_raw_get() - ARCH_TP_OFFSET); } /* * The TP register is supposed to be zero when the thread is first created * by the kernel. We use this for some debugging assertions. */ static inline bool __tcb_is_set(void) { return __tcb_raw_get() != NULL; } /** DTV Generation number - equals vector length */ #define DTV_GN(dtv) (((uintptr_t *)(dtv))[0]) extern tcb_t *tls_make(const void *); extern tcb_t *tls_make_initial(const void *); extern tcb_t *tls_alloc_arch(size_t, size_t); extern void tls_free(tcb_t *); extern void tls_free_arch(tcb_t *, size_t, size_t); extern void *tls_get(void); #ifdef CONFIG_TLS_VARIANT_1 extern tcb_t *tls_alloc_variant_1(size_t, size_t); extern void tls_free_variant_1(tcb_t *, size_t, size_t); #endif #ifdef CONFIG_TLS_VARIANT_2 extern tcb_t *tls_alloc_variant_2(size_t, size_t); extern void tls_free_variant_2(tcb_t *, size_t, size_t); #endif #endif /** @} */