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 */ 109 110