diff options
Diffstat (limited to 'lib/libpthread/arch/arm/include/pthread_md.h')
| -rw-r--r-- | lib/libpthread/arch/arm/include/pthread_md.h | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/lib/libpthread/arch/arm/include/pthread_md.h b/lib/libpthread/arch/arm/include/pthread_md.h deleted file mode 100644 index 857fa1b..0000000 --- a/lib/libpthread/arch/arm/include/pthread_md.h +++ /dev/null @@ -1,257 +0,0 @@ -/*- - * Copyright (c) 2003 Jake Burkholder <jake@freebsd.org>. - * Copyright (c) 2003 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. - * - * $FreeBSD$ - */ - -/* - * Machine-dependent thread prototypes/definitions for the thread kernel. - */ -#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_tdv) - -int _thr_setcontext(mcontext_t *, intptr_t, intptr_t *); -int _thr_getcontext(mcontext_t *); - -#define THR_GETCONTEXT(ucp) _thr_getcontext(&(ucp)->uc_mcontext) -#define THR_SETCONTEXT(ucp) _thr_setcontext(&(ucp)->uc_mcontext, 0, NULL) - -#define PER_THREAD - -struct kcb; -struct kse; -struct pthread; -struct tcb; -struct tdv; /* We don't know what this is yet? */ - - -/* - * %r6 points to one of these. We define the static TLS as an array - * of long double to enforce 16-byte alignment of the TLS memory. - * - * XXX - Both static and dynamic allocation of any of these structures - * will result in a valid, well-aligned thread pointer??? - */ -struct arm_tp { - struct tdv *tp_tdv; /* dynamic TLS */ -}; - -struct tcb { - struct pthread *tcb_thread; - struct kcb *tcb_curkcb; - uint32_t tcb_isfake; - struct kse_thr_mailbox tcb_tmbx; /* needs 32-byte alignment */ - struct arm_tp tcb_tp; -}; - -struct kcb { - struct kse_mailbox kcb_kmbx; - struct tcb kcb_faketcb; - struct tcb *kcb_curtcb; - struct kse *kcb_kse; -}; - -extern struct arm_tp **arm_tp; -#define _tp (*arm_tp) - -#define _tcb ((struct tcb*)((char*)(_tp) - offsetof(struct 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 *); - -static __inline uint32_t -__kcb_swp(uint32_t val, void *ptr) -{ - - __asm __volatile("swp %0, %1, [%2]" - : "=r" (val) : "r" (val) , "r" (ptr) : "memory"); - return (val); -} - -/* 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. */ - __kcb_swp((uint32_t)&kcb->kcb_faketcb.tcb_tp, &_tp); -} - -/* - * 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 (_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 kse_thr_mailbox *crit; - - if (_tcb->tcb_isfake) - return (NULL); - crit = (struct kse_thr_mailbox *)__kcb_swp((uint32_t)NULL, - &_tcb->tcb_curkcb->kcb_kmbx.km_curthread); - return (crit); -} - -static __inline void -_kcb_critical_leave(struct kse_thr_mailbox *crit) -{ - - if (_tcb->tcb_isfake == 0) - __kcb_swp((uint32_t)crit, - &_tcb->tcb_curkcb->kcb_kmbx.km_curthread); -} - -static __inline int -_kcb_in_critical(void) -{ - uint32_t flags; - int ret; - - return (_tcb->tcb_curkcb->kcb_kmbx.km_curthread == NULL); - 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_swp((uint32_t)&tcb->tcb_tp, &_tp); - kcb->kcb_curtcb = tcb; - tcb->tcb_curkcb = kcb; -} - -static __inline struct tcb * -_tcb_get(void) -{ - return (_tcb); -} - -static __inline struct pthread * -_get_curthread(void) -{ - return (_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 (_tcb->tcb_curkcb->kcb_kse); -} - -void _arm_enter_uts(struct kse_mailbox *km, kse_func_t uts, void *stack, - size_t stacksz); - -static __inline int -_thread_enter_uts(struct tcb *tcb, struct kcb *kcb) -{ - int ret; - - if ((ret = _thr_getcontext(&tcb->tcb_tmbx.tm_context.uc_mcontext)) - == 0) { - kcb->kcb_curtcb = &kcb->kcb_faketcb; - __kcb_swp((int)&kcb->kcb_faketcb.tcb_tp, &_tp); - _arm_enter_uts(&kcb->kcb_kmbx, kcb->kcb_kmbx.km_func, - kcb->kcb_kmbx.km_stack.ss_sp, - kcb->kcb_kmbx.km_stack.ss_size); - /* We should not reach here. */ - return (-1); - } else if (ret < 0) - return (-1); - return (0); -} - -static __inline int -_thread_switch(struct kcb *kcb, struct tcb *tcb, int setmbox) -{ - extern int _libkse_debug; - mcontext_t *mc; - - if (!tcb || !kcb) - return (-1); - _tcb_set(kcb, tcb); - mc = &tcb->tcb_tmbx.tm_context.uc_mcontext; - if (_libkse_debug == 0) { - tcb->tcb_tmbx.tm_lwp = kcb->kcb_kmbx.km_lwp; - if (setmbox) - _thr_setcontext(mc, (intptr_t)&tcb->tcb_tmbx, - (intptr_t *)&kcb->kcb_kmbx.km_curthread); - else - _thr_setcontext(mc, 0, NULL); - } else { - if (setmbox) - kse_switchin(&tcb->tcb_tmbx, KSE_SWITCHIN_SETTMBX); - else - kse_switchin(&tcb->tcb_tmbx, 0); - } - - /* We should not reach here. */ - return (-1); -} - -#endif /* _PTHREAD_MD_H_ */ |
