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/*-
* Copyright (C) 2003 David Xu <davidxu@freebsd.org>
* Copyright (c) 2001,2003 Daniel Eischen <deischen@freebsd.org>
* 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. Neither the name of the author 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <machine/cpufunc.h>
#include <machine/sysarch.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <ucontext.h>
#include "rtld_tls.h"
#include "pthread_md.h"
struct tcb *
_tcb_ctor(struct pthread *thread, int initial)
{
struct tcb *tcb;
void *oldtls;
if (initial) {
__asm __volatile("movl %%gs:0, %0" : "=r" (oldtls));
} else {
oldtls = NULL;
}
tcb = _rtld_allocate_tls(oldtls, sizeof(struct tcb), 16);
if (tcb) {
tcb->tcb_thread = thread;
tcb->tcb_spare = 0;
bzero(&tcb->tcb_tmbx, sizeof(tcb->tcb_tmbx));
}
return (tcb);
}
void
_tcb_dtor(struct tcb *tcb)
{
_rtld_free_tls(tcb, sizeof(struct tcb), 16);
}
/*
* Initialize KSD. This also includes setting up the LDT.
*/
struct kcb *
_kcb_ctor(struct kse *kse)
{
struct kcb *kcb;
kcb = malloc(sizeof(struct kcb));
if (kcb != NULL) {
bzero(kcb, sizeof(struct kcb));
kcb->kcb_self = kcb;
kcb->kcb_kse = kse;
}
return (kcb);
}
void
_kcb_dtor(struct kcb *kcb)
{
free(kcb);
}
int
i386_set_gsbase(void *addr)
{
return (sysarch(I386_SET_GSBASE, &addr));
}
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