[lwP] Add light weight process component.

components/lwp/lwp.h

@@ -0,0 +1,83 @@
+/*
+ * File      : lwp.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
+ *
+ *  This program 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 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#ifndef __LWP_H__
+#define __LWP_H__
+
+#define LWP_MAGIC           0x5A
+
+#define LWP_TYPE_FIX_ADDR   0x01
+#define LWP_TYPE_DYN_ADDR   0x02
+
+#define LWP_ARG_MAX         8
+
+#include <stdint.h>
+#include <rtthread.h>
+#include <dfs.h>
+#include <lwp_memheap.h>
+
+struct rt_lwp
+{
+    uint8_t lwp_type;
+    uint8_t heap_cnt;
+    uint8_t reserv[2];
+
+    rt_list_t hlist;                                    /**< headp list */
+
+    uint8_t *text_entry;
+    uint32_t text_size;
+
+    uint8_t *data;
+    uint32_t data_size;
+
+    uint32_t *kernel_sp;                                /**< kernel stack point */
+    struct dfs_fdtable fdt;
+};
+
+struct lwp_header
+{
+    uint8_t magic;
+    uint8_t compress_encrypt_algo;
+    uint16_t reserved;
+
+    uint32_t crc32;
+};
+
+struct lwp_chunk
+{
+    uint32_t total_len;
+
+    char name[4];
+    uint32_t data_len;
+    uint32_t data_len_space;
+};
+
+extern struct rt_lwp *rt_lwp_self(void);
+
+extern void rt_lwp_mem_init(struct rt_lwp *lwp);
+extern void rt_lwp_mem_deinit(struct rt_lwp *lwp);
+extern void *rt_lwp_mem_malloc(rt_uint32_t size);
+extern void rt_lwp_mem_free(void *addr);
+extern void *rt_lwp_mem_realloc(void *rmem, rt_size_t newsize);
+
+#endif