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/* Copyright (C) 2004-2021 Free Software Foundation, Inc. |
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|
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This file is part of GCC. |
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|
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GCC is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3, or (at your option) |
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any later version. |
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|
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GCC is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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Under Section 7 of GPL version 3, you are granted additional |
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permissions described in the GCC Runtime Library Exception, version |
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3.1, as published by the Free Software Foundation. |
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|
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You should have received a copy of the GNU General Public License and |
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a copy of the GCC Runtime Library Exception along with this program; |
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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<http://www.gnu.org/licenses/>. */ |
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|
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#ifndef _MM_MALLOC_H_INCLUDED |
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#define _MM_MALLOC_H_INCLUDED |
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|
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#include <stdlib.h> |
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#if __STDC_HOSTED__ |
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#include <errno.h> |
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#endif |
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|
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static __inline__ void * |
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_mm_malloc (size_t __size, size_t __align) |
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{ |
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void * __malloc_ptr; |
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void * __aligned_ptr; |
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|
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/* Error if align is not a power of two. */ |
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if (__align & (__align - 1)) |
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{ |
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#if __STDC_HOSTED__ |
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errno = EINVAL; |
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#endif |
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return ((void *) 0); |
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} |
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|
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if (__size == 0) |
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return ((void *) 0); |
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|
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/* Assume malloc'd pointer is aligned at least to sizeof (void*). |
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If necessary, add another sizeof (void*) to store the value |
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returned by malloc. Effectively this enforces a minimum alignment |
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of sizeof double. */ |
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if (__align < 2 * sizeof (void *)) |
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__align = 2 * sizeof (void *); |
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|
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__malloc_ptr = malloc (__size + __align); |
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if (!__malloc_ptr) |
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return ((void *) 0); |
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|
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/* Align We have at least sizeof (void *) space below malloc'd ptr. */ |
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__aligned_ptr = (void *) (((size_t) __malloc_ptr + __align) |
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& ~((size_t) (__align) - 1)); |
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|
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/* Store the original pointer just before p. */ |
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((void **) __aligned_ptr)[-1] = __malloc_ptr; |
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|
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return __aligned_ptr; |
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} |
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|
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static __inline__ void |
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_mm_free (void *__aligned_ptr) |
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{ |
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if (__aligned_ptr) |
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free (((void **) __aligned_ptr)[-1]); |
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} |
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|
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#endif /* _MM_MALLOC_H_INCLUDED */ |
