try catch 不处理动态内存，拆分riscv_rest

soft/mystdlib.h

@@ -11,18 +11,22 @@
 
 
 
-typedef struct _map_def{
-  size_t map_size;
-  size_t mam_used;
-  size_t mem_map[0];
-}map_def;
+// typedef struct _map_def{
+//   size_t map_size;
+//   size_t mam_used;
+//   size_t mem_map[0];
+// }map_def;
 
 
-void __mem_clear(map_def **m);
-void __mem_mov(map_def **d,map_def **s);
+// void __mem_clear(map_def **m);
+// void __mem_mov(map_def **d,map_def **s);
 
-void *mem_calloc(size_t memb_num, size_t memb_size);
-void *mem_malloc(size_t size);
-void mem_free(void *p);
+// void *mem_calloc(size_t memb_num, size_t memb_size);
+// void *mem_malloc(size_t size);
+// void mem_free(void *p);
+
+#define mem_calloc calloc
+#define mem_malloc malloc
+#define mem_free free
 
 #endif