diff options
Diffstat (limited to 'lib/libpthread/arch/ia64/include/pthread_md.h')
| -rw-r--r-- | lib/libpthread/arch/ia64/include/pthread_md.h | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/lib/libpthread/arch/ia64/include/pthread_md.h b/lib/libpthread/arch/ia64/include/pthread_md.h deleted file mode 100644 index c5fef18..0000000 --- a/lib/libpthread/arch/ia64/include/pthread_md.h +++ /dev/null @@ -1,268 +0,0 @@ -/* - * Copyright (c) 2003-2006 Marcel Moolenaar - * 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. - * - * 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. - * - * $FreeBSD$ - */ - -#ifndef _PTHREAD_MD_H_ -#define _PTHREAD_MD_H_ - -#include <sys/kse.h> -#include <stddef.h> -#include <ucontext.h> - -#define KSE_STACKSIZE 16384 -#define DTV_OFFSET offsetof(struct tcb, tcb_tp.tp_dtv) - -#define THR_GETCONTEXT(ucp) _ia64_save_context(&(ucp)->uc_mcontext) -#define THR_SETCONTEXT(ucp) PANIC("THR_SETCONTEXT() now in use!\n") - -#define PER_THREAD - -struct kcb; -struct kse; -struct pthread; -struct tcb; - -/* - * tp points to one of these. We define the TLS structure as a union - * containing a long double to enforce 16-byte alignment. This makes - * sure that there will not be any padding in struct tcb after the - * TLS structure. - */ -union ia64_tp { - void *tp_dtv; - long double _align_; -}; - -struct tcb { - struct kse_thr_mailbox tcb_tmbx; - struct pthread *tcb_thread; - struct kcb *tcb_curkcb; - long tcb_isfake; - union ia64_tp tcb_tp; -}; - -struct kcb { - struct kse_mailbox kcb_kmbx; - struct kse *kcb_kse; - struct tcb *kcb_curtcb; - struct tcb kcb_faketcb; -}; - -static __inline struct tcb * -ia64_get_tcb() -{ - register char *tp __asm("%r13"); - - return ((struct tcb *)(tp - offsetof(struct tcb, tcb_tp))); -} - -static __inline void -ia64_set_tcb(struct tcb *tcb) -{ - register char *tp __asm("%r13"); - - __asm __volatile("mov %0 = %1;;" : "=r"(tp) : "r"(&tcb->tcb_tp)); -} - -/* - * The kcb and tcb constructors. - */ -struct tcb *_tcb_ctor(struct pthread *, int); -void _tcb_dtor(struct tcb *); -struct kcb *_kcb_ctor(struct kse *kse); -void _kcb_dtor(struct kcb *); - -/* Called from the KSE to set its private data. */ -static __inline void -_kcb_set(struct kcb *kcb) -{ - /* There is no thread yet; use the fake tcb. */ - ia64_set_tcb(&kcb->kcb_faketcb); -} - -/* - * Get the current kcb. - * - * This can only be called while in a critical region; don't - * worry about having the kcb changed out from under us. - */ -static __inline struct kcb * -_kcb_get(void) -{ - return (ia64_get_tcb()->tcb_curkcb); -} - -/* - * Enter a critical region. - * - * Read and clear km_curthread in the kse mailbox. - */ -static __inline struct kse_thr_mailbox * -_kcb_critical_enter(void) -{ - struct tcb *tcb; - struct kse_thr_mailbox *crit; - uint32_t flags; - - tcb = ia64_get_tcb(); - if (tcb->tcb_isfake != 0) { - /* - * We already are in a critical region since - * there is no current thread. - */ - crit = NULL; - } else { - flags = tcb->tcb_tmbx.tm_flags; - tcb->tcb_tmbx.tm_flags |= TMF_NOUPCALL; - crit = tcb->tcb_curkcb->kcb_kmbx.km_curthread; - tcb->tcb_curkcb->kcb_kmbx.km_curthread = NULL; - tcb->tcb_tmbx.tm_flags = flags; - } - return (crit); -} - -static __inline void -_kcb_critical_leave(struct kse_thr_mailbox *crit) -{ - struct tcb *tcb; - - tcb = ia64_get_tcb(); - /* No need to do anything if this is a fake tcb. */ - if (tcb->tcb_isfake == 0) - tcb->tcb_curkcb->kcb_kmbx.km_curthread = crit; -} - -static __inline int -_kcb_in_critical(void) -{ - struct tcb *tcb; - uint32_t flags; - int ret; - - tcb = ia64_get_tcb(); - if (tcb->tcb_isfake != 0) { - /* - * We are in a critical region since there is no - * current thread. - */ - ret = 1; - } else { - flags = tcb->tcb_tmbx.tm_flags; - tcb->tcb_tmbx.tm_flags |= TMF_NOUPCALL; - ret = (tcb->tcb_curkcb->kcb_kmbx.km_curthread == NULL); - tcb->tcb_tmbx.tm_flags = flags; - } - return (ret); -} - -static __inline void -_tcb_set(struct kcb *kcb, struct tcb *tcb) -{ - if (tcb == NULL) - tcb = &kcb->kcb_faketcb; - kcb->kcb_curtcb = tcb; - tcb->tcb_curkcb = kcb; - ia64_set_tcb(tcb); -} - -static __inline struct tcb * -_tcb_get(void) -{ - return (ia64_get_tcb()); -} - -static __inline struct pthread * -_get_curthread(void) -{ - return (ia64_get_tcb()->tcb_thread); -} - -/* - * Get the current kse. - * - * Like _kcb_get(), this can only be called while in a critical region. - */ -static __inline struct kse * -_get_curkse(void) -{ - return (ia64_get_tcb()->tcb_curkcb->kcb_kse); -} - -void _ia64_break_setcontext(mcontext_t *mc); -void _ia64_enter_uts(kse_func_t uts, struct kse_mailbox *km, void *stack, - size_t stacksz); -int _ia64_restore_context(mcontext_t *mc, intptr_t val, intptr_t *loc); -int _ia64_save_context(mcontext_t *mc); - -static __inline int -_thread_enter_uts(struct tcb *tcb, struct kcb *kcb) -{ - if (_ia64_save_context(&tcb->tcb_tmbx.tm_context.uc_mcontext) == 0) { - /* Make the fake tcb the current thread. */ - kcb->kcb_curtcb = &kcb->kcb_faketcb; - ia64_set_tcb(&kcb->kcb_faketcb); - _ia64_enter_uts(kcb->kcb_kmbx.km_func, &kcb->kcb_kmbx, - kcb->kcb_kmbx.km_stack.ss_sp, - kcb->kcb_kmbx.km_stack.ss_size); - /* We should not reach here. */ - return (-1); - } - return (0); -} - -static __inline int -_thread_switch(struct kcb *kcb, struct tcb *tcb, int setmbox) -{ - mcontext_t *mc; - - _tcb_set(kcb, tcb); - mc = &tcb->tcb_tmbx.tm_context.uc_mcontext; - if (mc->mc_flags & _MC_FLAGS_ASYNC_CONTEXT) { - if (setmbox) { - mc->mc_flags |= _MC_FLAGS_KSE_SET_MBOX; - mc->mc_special.ifa = - (intptr_t)&kcb->kcb_kmbx.km_curthread; - mc->mc_special.isr = (intptr_t)&tcb->tcb_tmbx; - } - _ia64_break_setcontext(mc); - } else if (mc->mc_flags & _MC_FLAGS_SYSCALL_CONTEXT) { - if (setmbox) - kse_switchin(&tcb->tcb_tmbx, KSE_SWITCHIN_SETTMBX); - else - kse_switchin(&tcb->tcb_tmbx, 0); - } else { - if (setmbox) - _ia64_restore_context(mc, (intptr_t)&tcb->tcb_tmbx, - (intptr_t *)&kcb->kcb_kmbx.km_curthread); - else - _ia64_restore_context(mc, 0, NULL); - } - /* We should not reach here. */ - return (-1); -} - -#endif /* _PTHREAD_MD_H_ */ |
