gcc/config/i386/rtmintrin.h

   1 /* Copyright (C) 2012-2019 Free Software Foundation, Inc.
   2
   3    This file is part of GCC.
   4
   5    GCC is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3, or (at your option)
   8    any later version.
   9
  10    GCC is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    Under Section 7 of GPL version 3, you are granted additional
  16    permissions described in the GCC Runtime Library Exception, version
  17    3.1, as published by the Free Software Foundation.
  18
  19    You should have received a copy of the GNU General Public License and
  20    a copy of the GCC Runtime Library Exception along with this program;
  21    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  22    <http://www.gnu.org/licenses/>.  */
  23
  24 #ifndef _IMMINTRIN_H_INCLUDED
  25 # error "Never use <rtmintrin.h> directly; include <immintrin.h> instead."
  26 #endif
  27
  28 #ifndef _RTMINTRIN_H_INCLUDED
  29 #define _RTMINTRIN_H_INCLUDED
  30
  31 #ifndef __RTM__
  32 #pragma GCC push_options
  33 #pragma GCC target("rtm")
  34 #define __DISABLE_RTM__
  35 #endif /* __RTM__ */
  36
  37 #define _XBEGIN_STARTED         (~0u)
  38 #define _XABORT_EXPLICIT        (1 << 0)
  39 #define _XABORT_RETRY           (1 << 1)
  40 #define _XABORT_CONFLICT        (1 << 2)
  41 #define _XABORT_CAPACITY        (1 << 3)
  42 #define _XABORT_DEBUG           (1 << 4)
  43 #define _XABORT_NESTED          (1 << 5)
  44 #define _XABORT_CODE(x)         (((x) >> 24) & 0xFF)
  45
  46 /* Start an RTM code region.  Return _XBEGIN_STARTED on success and the
  47    abort condition otherwise.  */
  48 extern __inline unsigned int
  49 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
  50 _xbegin (void)
  51 {
  52   return __builtin_ia32_xbegin ();
  53 }
  54
  55 /* Specify the end of an RTM code region.  If it corresponds to the
  56    outermost transaction, then attempts the transaction commit.  If the
  57    commit fails, then control is transferred to the outermost transaction
  58    fallback handler.  */
  59 extern __inline void
  60 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
  61 _xend (void)
  62 {
  63   __builtin_ia32_xend ();
  64 }
  65
  66 /* Force an RTM abort condition. The control is transferred to the
  67    outermost transaction fallback handler with the abort condition IMM.  */
  68 #ifdef __OPTIMIZE__
  69 extern __inline void
  70 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
  71 _xabort (const unsigned int __imm)
  72 {
  73   __builtin_ia32_xabort (__imm);
  74 }
  75 #else
  76 #define _xabort(N)  __builtin_ia32_xabort (N)
  77 #endif /* __OPTIMIZE__ */
  78
  79 #ifdef __DISABLE_RTM__
  80 #undef __DISABLE_RTM__
  81 #pragma GCC pop_options
  82 #endif /* __DISABLE_RTM__ */
  83
  84 #endif /* _RTMINTRIN_H_INCLUDED */