ck_pr_rtm.h

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    1 /*
    2  * Copyright 2013-2015 Samy Al Bahra.
    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  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 /*
   28  * Copyright (c) 2012,2013 Intel Corporation
   29  * Author: Andi Kleen
   30  *
   31  * Redistribution and use in source and binary forms, with or without
   32  * modification, are permitted provided that: (1) source code distributions
   33  * retain the above copyright notice and this paragraph in its entirety, (2)
   34  * distributions including binary code include the above copyright notice and
   35  * this paragraph in its entirety in the documentation or other materials
   36  * provided with the distribution
   37  *
   38  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
   39  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
   40  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
   41  */
   42 
   43 #ifndef CK_PR_X86_64_RTM_H
   44 #define CK_PR_X86_64_RTM_H
   45 
   46 #ifndef CK_PR_X86_64_H
   47 #error Do not include this file directly, use ck_pr.h
   48 #endif
   49 
   50 #define CK_F_PR_RTM
   51 
   52 #include <ck_cc.h>
   53 #include <ck_stdbool.h>
   54 
   55 #define CK_PR_RTM_STARTED       (~0U)
   56 #define CK_PR_RTM_EXPLICIT      (1 << 0)
   57 #define CK_PR_RTM_RETRY         (1 << 1)
   58 #define CK_PR_RTM_CONFLICT      (1 << 2)
   59 #define CK_PR_RTM_CAPACITY      (1 << 3)
   60 #define CK_PR_RTM_DEBUG         (1 << 4)
   61 #define CK_PR_RTM_NESTED        (1 << 5)
   62 #define CK_PR_RTM_CODE(x)       (((x) >> 24) & 0xFF)
   63 
   64 CK_CC_INLINE static unsigned int
   65 ck_pr_rtm_begin(void)
   66 {
   67         unsigned int r = CK_PR_RTM_STARTED;
   68 
   69         __asm__ __volatile__(".byte 0xc7,0xf8;"
   70                              ".long 0;"
   71                                 : "+a" (r)
   72                                 :
   73                                 : "memory");
   74 
   75         return r;
   76 }
   77 
   78 CK_CC_INLINE static void
   79 ck_pr_rtm_end(void)
   80 {
   81 
   82         __asm__ __volatile__(".byte 0x0f,0x01,0xd5" ::: "memory");
   83         return;
   84 }
   85 
   86 CK_CC_INLINE static void
   87 ck_pr_rtm_abort(const unsigned int status)
   88 {
   89 
   90         __asm__ __volatile__(".byte 0xc6,0xf8,%P0" :: "i" (status) : "memory");
   91         return;
   92 }
   93 
   94 CK_CC_INLINE static bool
   95 ck_pr_rtm_test(void)
   96 {
   97         bool r;
   98 
   99         __asm__ __volatile__(".byte 0x0f,0x01,0xd6;"
  100                              "setnz %0"
  101                                 : "=r" (r)
  102                                 :
  103                                 : "memory");
  104 
  105         return r;
  106 }
  107 
  108 #endif /* CK_PR_X86_64_RTM_H */
  109

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FreeBSD/Linux Kernel Cross Reference sys/contrib/ck/include/gcc/x86_64/ck_pr_rtm.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/ck/include/gcc/x86_64/ck_pr_rtm.h