| /* Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* As a special exception, if you include this header file into source |
| files compiled by GCC, this header file does not by itself cause |
| the resulting executable to be covered by the GNU General Public |
| License. This exception does not however invalidate any other |
| reasons why the executable file might be covered by the GNU General |
| Public License. */ |
| |
| #ifndef _MM_MALLOC_H_INCLUDED |
| #define _MM_MALLOC_H_INCLUDED |
| |
| #include <stdlib.h> |
| #include <errno.h> |
| |
| static __inline__ void* |
| _mm_malloc (size_t size, size_t align) |
| { |
| void * malloc_ptr; |
| void * aligned_ptr; |
| |
| /* Error if align is not a power of two. */ |
| if (align & (align - 1)) |
| { |
| errno = EINVAL; |
| return ((void*) 0); |
| } |
| |
| if (size == 0) |
| return ((void *) 0); |
| |
| /* Assume malloc'd pointer is aligned at least to sizeof (void*). |
| If necessary, add another sizeof (void*) to store the value |
| returned by malloc. Effectively this enforces a minimum alignment |
| of sizeof double. */ |
| if (align < 2 * sizeof (void *)) |
| align = 2 * sizeof (void *); |
| |
| malloc_ptr = malloc (size + align); |
| if (!malloc_ptr) |
| return ((void *) 0); |
| |
| /* Align We have at least sizeof (void *) space below malloc'd ptr. */ |
| aligned_ptr = (void *) (((size_t) malloc_ptr + align) |
| & ~((size_t) (align) - 1)); |
| |
| /* Store the original pointer just before p. */ |
| ((void **) aligned_ptr) [-1] = malloc_ptr; |
| |
| return aligned_ptr; |
| } |
| |
| static __inline__ void |
| _mm_free (void * aligned_ptr) |
| { |
| if (aligned_ptr) |
| free (((void **) aligned_ptr) [-1]); |
| } |
| |
| #endif /* _MM_MALLOC_H_INCLUDED */ |