sparc_defns.h

/*
Copyright (c) 2003, Keir Fraser 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.  Neither the name of the Keir Fraser
    * 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 COPYRIGHT HOLDERS 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 COPYRIGHT
OWNER 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.
*/

#ifndef __SPARC_DEFNS_H__
#define __SPARC_DEFNS_H__

#ifndef SPARC
#define SPARC
#endif

#include <sys/types.h>
#include <sys/processor.h>
#include <sys/procset.h>
#include <sched.h>
#include <alloca.h>

#define CACHE_LINE_SIZE 64

#if 1
#include <thread.h>
#define pthread_mutex_t mutex_t
#define pthread_cond_t  cond_t
#define pthread_t       thread_t
#define pthread_key_t   thread_key_t
#define pthread_create(_a,_b,_c,_d) thr_create(NULL,0,_c,_d,THR_BOUND|THR_NEW_LWP,_a)
#define pthread_join(_a,_b) thr_join(_a,NULL,NULL)
#define pthread_key_create(_a,_b) thr_keycreate(_a,_b)
#define pthread_setspecific(_a,_b) thr_setspecific(_a,_b)
static void *pthread_getspecific(pthread_key_t _a)
{
    void *__x;
    thr_getspecific(_a,&__x);
    return __x;
}
#define pthread_setconcurrency(_x) thr_setconcurrency(_x)
#define pthread_mutex_init(_a,_b) mutex_init(_a,USYNC_THREAD,NULL)
#define pthread_mutex_lock(_a) mutex_lock(_a)
#define pthread_mutex_unlock(_a) mutex_unlock(_a)
#define pthread_cond_init(_a,_b) cond_init(_a,USYNC_THREAD,NULL)
#define pthread_cond_wait(_a,_b) cond_wait(_a,_b)
#define pthread_cond_broadcast(_a) cond_broadcast(_a)
#else
#include <pthread.h>
#endif


/*
 * I. Compare-and-swap.
 */

typedef unsigned long long _u64;

extern int CASIO_internal(int *, int, int);
extern void * CASPO_internal(void *, void *, void *);
extern _u64 CAS64O_internal(_u64 *, _u64, _u64);
#define CASIO(_a,_o,_n) (CASIO_internal((int*)(_a),(int)(_o),(int)(_n)))
#define CASPO(_a,_o,_n) (CASPO_internal((void*)(_a),(void*)(_o),(void*)(_n)))
#define CAS32O(_a,_o,_n) (_u32)(CASIO_internal((int *)_a,(int)_o,(int)_n))
#define CAS64O(_a,_o,_n) (CAS64O_internal((_u64 *)_a,(_u64)_o,(_u64)_n))

static int FASIO(int *a, int n)
{
    int no, o = *a;
    while ( (no = CASIO(a, o, n)) != o ) o = no;
    return o;
}

static void *FASPO(void *a, void *n)
{
    void *no, *o = *(void **)a;
    while ( (no = CASPO(a, o, n)) != o ) o = no;
    return o;
}


/*
 * II. Memory barriers.
 *  WMB(): All preceding write operations must commit before any later writes.
 *  RMB(): All preceding read operations must commit before any later reads.
 *  MB():  All preceding memory accesses must commit before any later accesses.
 *
 *  If the compiler does not observe these barriers (but any sane compiler
 *  will!), then VOLATILE should be defined as 'volatile'.
 */

extern void MEMBAR_ALL(void);
extern void MEMBAR_STORESTORE(void);
extern void MEMBAR_LOADLOAD(void);
#define MB()  MEMBAR_ALL()
#define WMB() MEMBAR_STORESTORE()
#define RMB() MEMBAR_LOADLOAD()
#define VOLATILE /*volatile*/


/*
 * III. Cycle counter access.
 */

typedef unsigned long tick_t;
extern tick_t RDTICK(void);


/*
 * IV. Types.
 */

typedef unsigned char      _u8;
typedef unsigned short     _u16;
typedef unsigned int       _u32;

#endif /* __SPARC_DEFNS_H__ */