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1 /* Copyright (C) 2012-2018 Free Software Foundation, Inc.
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111
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2
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3 This file is part of GCC.
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4
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5 GCC is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3, or (at your option)
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8 any later version.
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9
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10 GCC is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 Under Section 7 of GPL version 3, you are granted additional
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16 permissions described in the GCC Runtime Library Exception, version
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17 3.1, as published by the Free Software Foundation.
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18
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19 You should have received a copy of the GNU General Public License and
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20 a copy of the GCC Runtime Library Exception along with this program;
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21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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22 <http://www.gnu.org/licenses/>. */
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23
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24 #ifndef _IMMINTRIN_H_INCLUDED
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25 # error "Never use <rtmintrin.h> directly; include <immintrin.h> instead."
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26 #endif
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27
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28 #ifndef _RTMINTRIN_H_INCLUDED
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29 #define _RTMINTRIN_H_INCLUDED
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30
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31 #ifndef __RTM__
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32 #pragma GCC push_options
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33 #pragma GCC target("rtm")
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34 #define __DISABLE_RTM__
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35 #endif /* __RTM__ */
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36
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37 #define _XBEGIN_STARTED (~0u)
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38 #define _XABORT_EXPLICIT (1 << 0)
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39 #define _XABORT_RETRY (1 << 1)
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40 #define _XABORT_CONFLICT (1 << 2)
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41 #define _XABORT_CAPACITY (1 << 3)
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42 #define _XABORT_DEBUG (1 << 4)
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43 #define _XABORT_NESTED (1 << 5)
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44 #define _XABORT_CODE(x) (((x) >> 24) & 0xFF)
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45
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46 /* Start an RTM code region. Return _XBEGIN_STARTED on success and the
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47 abort condition otherwise. */
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48 extern __inline unsigned int
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49 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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50 _xbegin (void)
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51 {
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52 return __builtin_ia32_xbegin ();
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53 }
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54
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55 /* Specify the end of an RTM code region. If it corresponds to the
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56 outermost transaction, then attempts the transaction commit. If the
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57 commit fails, then control is transferred to the outermost transaction
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58 fallback handler. */
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59 extern __inline void
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60 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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61 _xend (void)
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62 {
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63 __builtin_ia32_xend ();
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64 }
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65
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66 /* Force an RTM abort condition. The control is transferred to the
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67 outermost transaction fallback handler with the abort condition IMM. */
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68 #ifdef __OPTIMIZE__
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69 extern __inline void
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70 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
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71 _xabort (const unsigned int __imm)
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72 {
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73 __builtin_ia32_xabort (__imm);
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74 }
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75 #else
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76 #define _xabort(N) __builtin_ia32_xabort (N)
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77 #endif /* __OPTIMIZE__ */
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78
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79 #ifdef __DISABLE_RTM__
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80 #undef __DISABLE_RTM__
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81 #pragma GCC pop_options
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82 #endif /* __DISABLE_RTM__ */
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83
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84 #endif /* _RTMINTRIN_H_INCLUDED */
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