add module feature

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@614 bbd45198-f89e-11dd-88c7-29a3b14d5316

src/kservice.c

@@ -977,9 +977,4 @@ char *strdup(const char *s) __attribute__((weak, alias("rt_strdup")));
 #endif
 #endif
 
-#ifdef RT_USING_MODULE
-#include <rtm.h>
-/* some buildin kernel symbol */
-RTM_EXPORT(rt_kprintf)
-#endif
 /*@}*/

src/module.c

@@ -19,6 +19,19 @@
 #include "module.h"
 #include "kservice.h"
 
+/* #define RT_MODULE_DEBUG */
+
+#define elf_module 	((Elf32_Ehdr *)module_ptr)
+#define shdr		((Elf32_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff))
+
+#define IS_PROG(s)		(s.sh_type == SHT_PROGBITS)
+#define IS_NOPROG(s)	(s.sh_type == SHT_NOBITS)
+#define IS_REL(s)		(s.sh_type == SHT_REL)
+#define IS_RELA(s)		(s.sh_type == SHT_RELA)
+#define IS_ALLOC(s)		(s.sh_flags == SHF_ALLOC)
+#define IS_AX(s)		((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_EXECINSTR))
+#define IS_AW(s)		((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_WRITE))
+
 #ifdef RT_USING_MODULE
 rt_list_t rt_module_symbol_list;
 struct rt_module* rt_current_module;
@@ -55,17 +68,6 @@ rt_uint32_t rt_module_symbol_find(const rt_uint8_t* sym_str)
 	return 0;
 }
 
-#define elf_module 	((Elf32_Ehdr *)module_ptr)
-#define shdr		((Elf32_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff))
-
-#define IS_PROG(s)		(s.sh_type == SHT_PROGBITS)
-#define IS_NOPROG(s)	(s.sh_type == SHT_NOBITS)
-#define IS_REL(s)		(s.sh_type == SHT_REL)
-#define IS_RELA(s)		(s.sh_type == SHT_RELA)
-#define IS_ALLOC(s)		(s.sh_flags == SHF_ALLOC)
-#define IS_AX(s)		((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_EXECINSTR))
-#define IS_AW(s)		((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_WRITE))
-
 int rt_module_arm_relocate(struct rt_module* module, Elf32_Rel *rel, Elf32_Addr sym_val, rt_uint32_t module_addr)
 {
 	Elf32_Addr *where, tmp;
@@ -79,7 +81,9 @@ int rt_module_arm_relocate(struct rt_module* module, Elf32_Rel *rel, Elf32_Addr
 
 	case R_ARM_ABS32:
 		*where += (Elf32_Addr)sym_val;
+#ifdef RT_MODULE_DEBUG
 		rt_kprintf("R_ARM_ABS32: %x -> %x\n", where, *where);
+#endif
 		break;
 
 	case R_ARM_PC24:
@@ -92,7 +96,9 @@ int rt_module_arm_relocate(struct rt_module* module, Elf32_Rel *rel, Elf32_Addr
 		tmp = sym_val - (Elf32_Addr)where + (addend << 2);
 		tmp >>= 2;
 		*where = (*where & 0xff000000) | (tmp & 0x00ffffff);
+#ifdef RT_MODULE_DEBUG
 		rt_kprintf("R_ARM_PC24: %x -> %x\n", where, *where);
+#endif
 		break;
 
 	default:
@@ -275,7 +281,9 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
 			for (i = 0; i < nr_reloc; i ++)
 			{
 				Elf32_Sym *sym = &symtab[ELF32_R_SYM(rel->r_info)];
+#ifdef RT_MODULE_DEBUG
 				rt_kprintf("relocate symbol: %s\n", strtab + sym->st_name);
+#endif
 				if (sym->st_shndx != STN_UNDEF)
 				{				
 					if(ELF_ST_TYPE(sym->st_info) == STT_SECTION)
@@ -310,7 +318,9 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
 				}
 				else
 				{
+#ifdef RT_MODULE_DEBUG
 					rt_kprintf("unresolved relocate symbol: %s\n", strtab + sym->st_name);
+#endif
 					/* need to resolve symbol in kernel symbol table */
 					Elf32_Addr addr = rt_module_symbol_find(strtab + sym->st_name);
 					if (addr != (Elf32_Addr)RT_NULL)

src/object.c

@@ -21,6 +21,10 @@
 
 #include "kservice.h"
 
+#ifdef RT_USING_MODULE
+extern struct rt_module* rt_current_module;
+#endif
+
 #define _OBJ_CONTAINER_LIST_INIT(c) 	\
 	{&(rt_object_container[c].object_list), &(rt_object_container[c].object_list)}
 struct rt_object_information rt_object_container[RT_Object_Class_Unknown] =
@@ -249,8 +253,14 @@ rt_object_t rt_object_allocate(enum rt_object_class_type type, const char* name)
 	register rt_base_t temp;
 	struct rt_object_information* information;
 
+#ifdef RT_USING_MODULE
+	/* get module object information */
+	information = (rt_current_module != RT_NULL) ? 
+		&rt_current_module->module_object[type] : &rt_object_container[type];
+#else
 	/* get object information */
 	information = &rt_object_container[type];
+#endif
 
 	object = (struct rt_object*)rt_malloc(information->object_size);
 	if (object == RT_NULL)

src/rtm.c

@@ -0,0 +1,36 @@
+/*
+ * File      : module.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author		Notes
+ * 2010-04-12      yi.qiu	first version
+ */
+
+#include <rtthread.h> 
+#include <rtm.h>
+
+/* some buildin kernel symbol */
+
+/* thread symbol */
+RTM_EXPORT(rt_thread_init)
+RTM_EXPORT(rt_thread_detach)
+RTM_EXPORT(rt_thread_create)
+RTM_EXPORT(rt_thread_self)
+RTM_EXPORT(rt_thread_find)
+RTM_EXPORT(rt_thread_startup)
+RTM_EXPORT(rt_thread_delete)
+RTM_EXPORT(rt_thread_yield)
+RTM_EXPORT(rt_thread_delay)
+RTM_EXPORT(rt_thread_control)
+RTM_EXPORT(rt_thread_suspend)
+RTM_EXPORT(rt_thread_resume)
+RTM_EXPORT(rt_thread_timeout)
+
+/* kservice symbol */
+RTM_EXPORT(rt_kprintf)

src/scheduler.c

@@ -35,6 +35,9 @@ rt_list_t rt_thread_priority_table[RT_THREAD_PRIORITY_MAX];
 struct rt_thread* rt_current_thread;
 
 rt_uint8_t rt_current_priority;
+#ifdef RT_USING_MODULE
+extern struct rt_module* rt_current_module;
+#endif
 
 #if RT_THREAD_PRIORITY_MAX > 32
 /* maximun priority level, 256 */
@@ -260,6 +263,11 @@ void rt_schedule()
             from_thread = rt_current_thread;
             rt_current_thread = to_thread;
 
+#ifdef RT_USING_MODULE
+            if(rt_current_thread->module_parent != RT_NULL)	
+                rt_current_module = rt_current_thread->module_parent;
+#endif
+
 #ifdef RT_USING_HOOK
             if (rt_scheduler_hook != RT_NULL) rt_scheduler_hook(from_thread, to_thread);
 #endif

src/thread.c

@@ -32,6 +32,10 @@ extern rt_list_t rt_thread_priority_table[RT_THREAD_PRIORITY_MAX];
 extern struct rt_thread* rt_current_thread;
 extern rt_uint8_t rt_current_priority;
 
+#ifdef RT_USING_MODULE
+extern struct rt_module* rt_current_module;
+#endif
+
 #ifdef RT_USING_HEAP
 extern rt_list_t rt_thread_defunct;
 #endif
@@ -78,7 +82,8 @@ static rt_err_t _rt_thread_init(struct rt_thread* thread,
 
 #ifdef RT_USING_MODULE
 	/* init module parent */
-	thread->module_parent = RT_NULL;
+	thread->module_parent = 
+		(rt_current_module != RT_NULL) ? rt_current_module : RT_NULL;
 #endif
 
 	/* init user data */
@@ -228,12 +233,12 @@ rt_err_t rt_thread_startup (rt_thread_t thread)
 static void rt_thread_exit()
 {
 	struct rt_thread* thread;
-    register rt_base_t temp;
+	register rt_base_t temp;
 
-    /* disable interrupt */
-    temp = rt_hw_interrupt_disable();
+	/* disable interrupt */
+	temp = rt_hw_interrupt_disable();
 
-    /* get current thread */
+	/* get current thread */
 	thread = rt_current_thread;
 
 	/* remove from schedule */
@@ -628,21 +633,4 @@ rt_thread_t rt_thread_find(char* name)
 	return thread;
 }
 
-#ifdef RT_USING_MODULE
-#include <rtm.h>
-/* some buildin kernel symbol */
-RTM_EXPORT(rt_thread_init)
-RTM_EXPORT(rt_thread_detach)
-RTM_EXPORT(rt_thread_create)
-RTM_EXPORT(rt_thread_self)
-RTM_EXPORT(rt_thread_find)
-RTM_EXPORT(rt_thread_startup)
-RTM_EXPORT(rt_thread_delete)
-RTM_EXPORT(rt_thread_yield)
-RTM_EXPORT(rt_thread_delay)
-RTM_EXPORT(rt_thread_control)
-RTM_EXPORT(rt_thread_suspend)
-RTM_EXPORT(rt_thread_resume)
-RTM_EXPORT(rt_thread_timeout)
-#endif
 /*@}*/