2 * Copyright (C) 2003 David Xu <davidxu@freebsd.org>
3 * Copyright (c) 2001,2003 Daniel Eischen <deischen@freebsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Neither the name of the author nor the names of its contributors
12 * may be used to endorse or promote products derived from this software
13 * without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/types.h>
32 #include <machine/cpufunc.h>
33 #include <machine/sysarch.h>
42 #include "pthread_md.h"
45 _tcb_ctor(struct pthread *thread, int initial)
51 __asm __volatile("movl %%gs:0, %0" : "=r" (oldtls));
56 tcb = _rtld_allocate_tls(oldtls, sizeof(struct tcb), 16);
58 tcb->tcb_thread = thread;
60 bzero(&tcb->tcb_tmbx, sizeof(tcb->tcb_tmbx));
67 _tcb_dtor(struct tcb *tcb)
69 _rtld_free_tls(tcb, sizeof(struct tcb), 16);
73 * Initialize KSD. This also includes setting up the LDT.
76 _kcb_ctor(struct kse *kse)
80 kcb = malloc(sizeof(struct kcb));
82 bzero(kcb, sizeof(struct kcb));
90 _kcb_dtor(struct kcb *kcb)
96 i386_set_gsbase(void *addr)
99 return (sysarch(I386_SET_GSBASE, &addr));