| 1 | /*
|
|---|
| 2 | * Copyright (C) 2005 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup sparc64
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifndef __sparc64_BARRIER_H__
|
|---|
| 36 | #define __sparc64_BARRIER_H__
|
|---|
| 37 |
|
|---|
| 38 | /*
|
|---|
| 39 | * TODO: Implement true SPARC V9 memory barriers for macros below.
|
|---|
| 40 | */
|
|---|
| 41 | #define CS_ENTER_BARRIER() __asm__ volatile ("" ::: "memory")
|
|---|
| 42 | #define CS_LEAVE_BARRIER() __asm__ volatile ("" ::: "memory")
|
|---|
| 43 |
|
|---|
| 44 | #define memory_barrier()
|
|---|
| 45 | #define read_barrier()
|
|---|
| 46 | #define write_barrier()
|
|---|
| 47 |
|
|---|
| 48 | /** Flush Instruction Memory instruction. */
|
|---|
| 49 | static inline void flush(void)
|
|---|
| 50 | {
|
|---|
| 51 | /*
|
|---|
| 52 | * The FLUSH instruction takes address parameter.
|
|---|
| 53 | * As such, it may trap if the address is not found in DTLB.
|
|---|
| 54 | * However, JPS1 implementations are free to ignore the trap.
|
|---|
| 55 | */
|
|---|
| 56 |
|
|---|
| 57 | __asm__ volatile ("flush %0\n" :: "r" (0x400000));
|
|---|
| 58 | }
|
|---|
| 59 |
|
|---|
| 60 | /** Memory Barrier instruction. */
|
|---|
| 61 | static inline void membar(void)
|
|---|
| 62 | {
|
|---|
| 63 | __asm__ volatile ("membar #Sync\n");
|
|---|
| 64 | }
|
|---|
| 65 |
|
|---|
| 66 | #endif
|
|---|
| 67 |
|
|---|
| 68 | /** @}
|
|---|
| 69 | */
|
|---|
