gcc/config/rs6000/mm_malloc.h

   1 /* Copyright (C) 2004-2023 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 _MM_MALLOC_H_INCLUDED
  25 #define _MM_MALLOC_H_INCLUDED
  26
  27 #include <stdlib.h>
  28
  29 /* We can't depend on <stdlib.h> since the prototype of posix_memalign
  30    may not be visible.  */
  31 #ifndef __cplusplus
  32 extern int posix_memalign (void **, size_t, size_t);
  33 #else
  34 extern "C" int posix_memalign (void **, size_t, size_t) throw ();
  35 #endif
  36
  37 static __inline void *
  38 _mm_malloc (size_t __size, size_t __alignment)
  39 {
  40   /* PowerPC64 ELF V2 ABI requires quadword alignment.  */
  41   size_t __vec_align = sizeof (__vector float);
  42   /* Linux GLIBC malloc alignment is at least 2 X ptr size.  */
  43   size_t __malloc_align = (sizeof (void *) + sizeof (void *));
  44   void *__ptr;
  45
  46   if (__alignment == __malloc_align && __alignment == __vec_align)
  47     return malloc (__size);
  48   if (__alignment < __vec_align)
  49     __alignment = __vec_align;
  50   if (posix_memalign (&__ptr, __alignment, __size) == 0)
  51     return __ptr;
  52   else
  53     return NULL;
  54 }
  55
  56 static __inline void
  57 _mm_free (void * __ptr)
  58 {
  59   free (__ptr);
  60 }
  61
  62 #endif /* _MM_MALLOC_H_INCLUDED */