Initial import of NFC GNSS SDK project

2026-09-15 16:10:12 +08:00
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+/*
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+#ifndef __LWIP_MEM_H__
+#define __LWIP_MEM_H__
+
+#include "opt.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* function declare */
+#if IS_LWIP_PLATFORM_CRANE
+void *mallocExt(size_t Size);
+#undef MALLOC
+#define MALLOC          mallocExt
+#else
+#undef MALLOC
+#define MALLOC          malloc
+#endif
+
+#if MEM_LIBC_MALLOC
+
+#include <stddef.h> /* for size_t */
+#include <stdlib.h>
+
+typedef size_t mem_size_t;
+#define MEM_SIZE_F SZT_F
+
+/* aliases for C library malloc() */
+#define mem_init()
+/* in case C library malloc() needs extra protection,
+ * allow these defines to be overridden.
+ */
+#ifndef mem_free
+#define mem_free free
+#endif
+#ifndef mem_malloc
+#define mem_malloc MALLOC
+#endif
+#ifndef mem_calloc
+#define mem_calloc calloc
+#endif
+#ifndef mem_free_64A
+#define mem_free_64A free
+#endif
+#ifndef mem_malloc_64A
+#define mem_malloc_64A MALLOC
+#endif
+#ifndef mem_malloc_zero
+#define mem_malloc_zero MALLOC
+#endif
+/* Since there is no C library allocation function to shrink memory without
+   moving it, define this to nothing. */
+#ifndef mem_trim
+#define mem_trim(mem, size) (mem)
+#endif
+
+#else /* MEM_LIBC_MALLOC */
+
+/* MEM_SIZE would have to be aligned, but using 64000 here instead of
+ * 65535 leaves some room for alignment...
+ */
+#if MEM_SIZE > 64000L
+typedef u32_t mem_size_t;
+#define MEM_SIZE_F U32_F
+#else
+typedef u16_t mem_size_t;
+#define MEM_SIZE_F U16_F
+#endif /* MEM_SIZE > 64000 */
+
+#if MEM_USE_POOLS
+/** mem_init is not used when using pools instead of a heap */
+#define mem_init()
+/** mem_trim is not used when using pools instead of a heap:
+    we can't free part of a pool element and don't want to copy the rest */
+#define mem_trim(mem, size) (mem)
+void *mem_malloc_64A(mem_size_t size);
+void *mem_malloc_zero(int size);
+void mem_free_64A(void *rmem);
+#else /* MEM_USE_POOLS */
+/* lwIP alternative malloc */
+void  mem_init(void);
+void *mem_trim(void *mem, mem_size_t size);
+#endif /* MEM_USE_POOLS */
+
+#if 0
+#if MEMP_OVERFLOW_CHECK
+void *mem_malloc_fn(mem_size_t size, const char* file, const int line);
+#define mem_malloc(size) mem_malloc_fn((size), __FUNCTION__, __LINE__)
+#define mem_malloc2(size) mem_malloc_fn((size), __FUNCTION__, __LINE__)
+
+void mem_free_fn(void *mem, const char* file, const int line);
+#define mem_free(mem) mem_malloc_fn((mem), __FUNCTION__, __LINE__)
+
+#else
+void *mem_malloc(mem_size_t size);
+void  mem_free(void *mem);
+#endif
+#endif
+void *mem_malloc_fn(mem_size_t size, const char* file, const int line);
+#define mem_malloc(size) mem_malloc_fn((size), __FUNCTION__, __LINE__)
+
+void mem_free_fn(void *rmem, const char* file, const int line);
+#define mem_free(rmem) mem_free_fn((rmem), __FUNCTION__, __LINE__)
+
+void *mem_calloc(mem_size_t count, mem_size_t size);
+
+#endif /* MEM_LIBC_MALLOC */
+
+/** Calculate memory size for an aligned buffer - returns the next highest
+ * multiple of MEM_ALIGNMENT (e.g. LWIP_MEM_ALIGN_SIZE(3) and
+ * LWIP_MEM_ALIGN_SIZE(4) will both yield 4 for MEM_ALIGNMENT == 4).
+ */
+#ifndef LWIP_MEM_ALIGN_SIZE
+#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
+#endif
+
+/** Calculate safe memory size for an aligned buffer when using an unaligned
+ * type as storage. This includes a safety-margin on (MEM_ALIGNMENT - 1) at the
+ * start (e.g. if buffer is u8_t[] and actual data will be u32_t*)
+ */
+#ifndef LWIP_MEM_ALIGN_BUFFER
+#define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1))
+#endif
+
+/** Align a memory pointer to the alignment defined by MEM_ALIGNMENT
+ * so that ADDR % MEM_ALIGNMENT == 0
+ */
+#ifndef LWIP_MEM_ALIGN
+#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LWIP_MEM_H__ */