libitm/config/alpha/unaligned.h

   1 /* Copyright (C) 2009, 2011 Free Software Foundation, Inc.
   2    Contributed by Richard Henderson <rth@redhat.com>.
   3
   4    This file is part of the GNU Transactional Memory Library (libitm).
   5
   6    Libitm is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14    more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25 #ifndef LIBITM_ALPHA_UNALIGNED_H
  26 #define LIBITM_ALPHA_UNALIGNED_H 1
  27
  28 #define HAVE_ARCH_UNALIGNED_LOAD2_U2 1
  29 #define HAVE_ARCH_UNALIGNED_LOAD2_U4 1
  30 #define HAVE_ARCH_UNALIGNED_LOAD2_U8 1
  31
  32 #ifndef __alpha_bwx__
  33 #define HAVE_ARCH_UNALIGNED_STORE2_U2 1
  34 #endif
  35 #define HAVE_ARCH_UNALIGNED_STORE2_U4 1
  36 #define HAVE_ARCH_UNALIGNED_STORE2_U8 1
  37
  38 #include "config/generic/unaligned.h"
  39
  40 namespace GTM HIDDEN {
  41
  42 template<>
  43 inline uint16_t ALWAYS_INLINE
  44 unaligned_load2<uint16_t>(const gtm_cacheline *c1,
  45                           const gtm_cacheline *c2, size_t ofs)
  46 {
  47   uint64_t v1 = c1->u64[CACHELINE_SIZE / sizeof(uint64_t) - 1];
  48   uint64_t v2 = c2->u64[0];
  49
  50   return __builtin_alpha_extwl (v1, ofs) | __builtin_alpha_extwh (v2, ofs);
  51 }
  52
  53 template<>
  54 inline uint32_t ALWAYS_INLINE
  55 unaligned_load2<uint32_t>(const gtm_cacheline *c1,
  56                           const gtm_cacheline *c2, size_t ofs)
  57 {
  58   uint64_t v1 = c1->u64[CACHELINE_SIZE / sizeof(uint64_t) - 1];
  59   uint64_t v2 = c2->u64[0];
  60
  61   return __builtin_alpha_extll (v1, ofs) + __builtin_alpha_extlh (v2, ofs);
  62 }
  63
  64 template<>
  65 inline uint64_t ALWAYS_INLINE
  66 unaligned_load2<uint64_t>(const gtm_cacheline *c1,
  67                           const gtm_cacheline *c2, size_t ofs)
  68 {
  69   uint64_t v1 = c1->u64[CACHELINE_SIZE / sizeof(uint64_t) - 1];
  70   uint64_t v2 = c2->u64[0];
  71
  72   return __builtin_alpha_extql (v1, ofs) | __builtin_alpha_extqh (v2, ofs);
  73 }
  74
  75 #ifndef __alpha_bwx__
  76 template<>
  77 inline void
  78 unaligned_store2<uint16_t>(gtm_cacheline *c1, gtm_cacheline *c2,
  79                            size_t ofs, uint16_t val)
  80 {
  81   uint32_t vl = (uint32_t)val << 24, vh = val >> 8;
  82
  83   gtm_cacheline::store_mask (&c1->u32[CACHELINE_SIZE / 4 - 1], vl, 4);
  84   gtm_cacheline::store_mask (&c2->u32[0], vh, 1);
  85 }
  86 #endif
  87
  88 template<>
  89 inline void
  90 unaligned_store2<uint32_t>(gtm_cacheline *c1, gtm_cacheline *c2,
  91                            size_t ofs, uint32_t val)
  92 {
  93   uint64_t vl = __builtin_alpha_insll (val, ofs);
  94   uint64_t ml = __builtin_alpha_insll (~0u, ofs);
  95   uint64_t vh = __builtin_alpha_inslh (val, ofs);
  96   uint64_t mh = __builtin_alpha_inslh (~0u, ofs);
  97
  98   gtm_cacheline::store_mask (&c1->u64[CACHELINE_SIZE / 8 - 1], vl, ml);
  99   gtm_cacheline::store_mask (&c2->u64[0], vh, mh);
 100 }
 101
 102 template<>
 103 inline void
 104 unaligned_store2<uint64_t>(gtm_cacheline *c1, gtm_cacheline *c2,
 105                            size_t ofs, uint64_t val)
 106 {
 107   uint64_t vl = __builtin_alpha_insql (val, ofs);
 108   uint64_t ml = __builtin_alpha_insql (~0u, ofs);
 109   uint64_t vh = __builtin_alpha_insqh (val, ofs);
 110   uint64_t mh = __builtin_alpha_insqh (~0u, ofs);
 111
 112   gtm_cacheline::store_mask (&c1->u64[CACHELINE_SIZE / 8 - 1], vl, ml);
 113   gtm_cacheline::store_mask (&c2->u64[0], vh, mh);
 114 }
 115
 116 } // namespace GTM
 117
 118 #endif // LIBITM_ALPHA_UNALIGNED_H