summaryrefslogtreecommitdiff
path: root/src/module.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/module.c')
-rw-r--r--src/module.c121
1 files changed, 87 insertions, 34 deletions
diff --git a/src/module.c b/src/module.c
index 19fbd04fb2..decd8e6222 100644
--- a/src/module.c
+++ b/src/module.c
@@ -19,7 +19,8 @@
#include "module.h"
#include "kservice.h"
-/* #define RT_MODULE_DEBUG */
+#define RT_MODULE_DEBUG
+#ifdef RT_USING_MODULE
#define elf_module ((Elf32_Ehdr *)module_ptr)
#define shdr ((Elf32_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff))
@@ -32,10 +33,11 @@
#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;
struct rt_module_symtab *_rt_module_symtab_begin = RT_NULL, *_rt_module_symtab_end = RT_NULL;
+extern const struct rt_shell ishell;
+
void rt_system_module_init()
{
#ifdef __CC_ARM
@@ -101,6 +103,11 @@ int rt_module_arm_relocate(struct rt_module* module, Elf32_Rel *rel, Elf32_Addr
#endif
break;
+ case R_ARM_V4BX:
+ *where &= 0xf000000f;
+ *where |= 0x01a0f000;
+ break;
+
default:
return -1;
}
@@ -174,7 +181,7 @@ static void rt_module_init_object_container(struct rt_module* module)
struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
{
- rt_uint32_t index, rodata_addr = 0, bss_addr = 0;
+ rt_uint32_t index, rodata_addr = 0, data_addr = 0, bss_addr = 0;
rt_uint32_t module_addr = 0, module_size = 0;
struct rt_module* module = RT_NULL;
rt_uint8_t *ptr, *strtab, *shstrab;
@@ -219,7 +226,7 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
/* allocate module */
module = (struct rt_module *)rt_object_allocate(RT_Object_Class_Module, (const char*)name);
- if (module == RT_NULL) return module;
+ if (module == RT_NULL) return RT_NULL;
/* allocate module space */
module->module_space = rt_malloc(module_size);
@@ -254,7 +261,8 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
/* load data section */
if (IS_PROG(shdr[index]) && IS_AW(shdr[index]))
{
- module->module_data = (rt_uint32_t)ptr;
+ data_addr = (rt_uint32_t)ptr;
+ rt_kprintf("data section address 0x%x\n", data_addr);
rt_memcpy(ptr, (rt_uint8_t*)elf_module + shdr[index].sh_offset, shdr[index].sh_size);
ptr += shdr[index].sh_size;
}
@@ -263,6 +271,7 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
if (IS_NOPROG(shdr[index]) && IS_AW(shdr[index]))
{
bss_addr = (rt_uint32_t)ptr;
+ rt_kprintf("bss section address 0x%x\n", bss_addr);
rt_memset(ptr, 0, shdr[index].sh_size);
}
}
@@ -293,24 +302,35 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
{
Elf32_Sym *sym = &symtab[ELF32_R_SYM(rel->r_info)];
#ifdef RT_MODULE_DEBUG
- rt_kprintf("relocate symbol: %s\n", strtab + sym->st_name);
+ 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)
+ if((ELF_ST_TYPE(sym->st_info) == STT_SECTION)
+ || (ELF_ST_TYPE(sym->st_info) == STT_OBJECT))
{
+ rt_kprintf("section name %s\n", shstrab + shdr[sym->st_shndx].sh_name);
if (rt_strncmp(shstrab + shdr[sym->st_shndx].sh_name, ELF_RODATA, 8) == 0)
{
/* relocate rodata section */
rt_module_arm_relocate(module, rel,
- (Elf32_Addr)(rodata_addr),
+ (Elf32_Addr)(rodata_addr + sym->st_value),
module_addr);
}
else if(strncmp(shstrab + shdr[sym->st_shndx].sh_name, ELF_BSS, 5) == 0)
{
/* relocate bss section */
- rt_module_arm_relocate(module, rel, (Elf32_Addr)bss_addr, module_addr);
- }
+ rt_module_arm_relocate(module, rel,
+ (Elf32_Addr)bss_addr + sym->st_value,
+ module_addr);
+ }
+ else if(strncmp(shstrab + shdr[sym->st_shndx].sh_name, ELF_DATA, 6) == 0)
+ {
+ /* relocate bss section */
+ rt_module_arm_relocate(module, rel,
+ (Elf32_Addr)data_addr + sym->st_value,
+ module_addr);
+ }
}
else if(ELF_ST_TYPE(sym->st_info) == STT_FUNC )
{
@@ -319,25 +339,26 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
(Elf32_Addr)((rt_uint8_t*)module->module_space - module_addr + sym->st_value),
module_addr);
}
- else if(ELF_ST_TYPE(sym->st_info) == STT_OBJECT)
- {
- /* relocate object in data section */
- rt_module_arm_relocate(module, rel,
- (Elf32_Addr)(module->module_data + sym->st_value),
- module_addr);
- }
}
else
{
Elf32_Addr addr;
+
+ if(ELF32_R_TYPE(rel->r_info) != R_ARM_V4BX)
+ {
#ifdef RT_MODULE_DEBUG
- rt_kprintf("unresolved relocate symbol: %s\n", strtab + sym->st_name);
+ rt_kprintf("unresolved relocate symbol: %s\n", strtab + sym->st_name);
#endif
- /* need to resolve symbol in kernel symbol table */
- addr = rt_module_symbol_find(strtab + sym->st_name);
- if (addr != (Elf32_Addr)RT_NULL)
+ /* need to resolve symbol in kernel symbol table */
+ addr = rt_module_symbol_find(strtab + sym->st_name);
+ if (addr != (Elf32_Addr)RT_NULL)
+ rt_module_arm_relocate(module, rel, addr, module_addr);
+ else rt_kprintf("can't find %s in kernel symbol table\n", strtab + sym->st_name);
+ }
+ else
+ {
rt_module_arm_relocate(module, rel, addr, module_addr);
- else rt_kprintf("can't find %s in kernel symbol table\n", strtab + sym->st_name);
+ }
}
rel ++;
@@ -347,27 +368,50 @@ struct rt_module* rt_module_load(void* module_ptr, const rt_uint8_t* name)
/* init module object container */
rt_module_init_object_container(module);
-
- /* set module defalut clean type */
- module->parent.flag |= RT_MODULE_FLAG_AUTO_CLEAN;
-
- /* create module main thread */
- module->module_thread = rt_thread_create((const char*)name,
- module->module_entry, RT_NULL,
- 512, 90, 10);
- module->module_thread->module_parent = module;
- rt_thread_startup(module->module_thread);
+ /* enter elf entry */
+ ((elf_entry)module->module_entry)(&ishell, &module->module_info);
return module;
}
+void rt_module_run(struct rt_module* module)
+{
+ struct rt_module_info *info;
+
+ /* check parameter */
+ RT_ASSERT(module != RT_NULL);
+ RT_ASSERT(module->module_info != RT_NULL);
+
+ info = module->module_info;
+ if(info->module_type == RT_Module_Class_APP)
+ {
+ /* application */
+ module->module_thread = rt_thread_create(module->parent.name,
+ module->module_entry, RT_NULL,
+ 512, 90, 10);
+ module->module_thread->module_parent = module;
+ rt_thread_startup(module->module_thread);
+ }
+ else if(info->module_type == RT_Module_Class_EXTENSION)
+ {
+ /* extension */
+ }
+ else if(info->module_type == RT_Module_Class_SERVICE)
+ {
+ /* service */
+ }
+}
+
void rt_module_unload(struct rt_module* module)
{
int i;
struct rt_object* object;
struct rt_timer *timer;
struct rt_list_node *list, *node;
-
+
+ /* check parameter */
+ RT_ASSERT(module != RT_NULL);
+
/* suspend module main thread */
if (module->module_thread->stat == RT_THREAD_READY)
rt_thread_suspend(module->module_thread);
@@ -379,7 +423,16 @@ void rt_module_unload(struct rt_module* module)
for (node = list->next; node != list; node = node->next)
{
object = rt_list_entry(node, struct rt_object, list);
- rt_object_delete(object);
+ if (rt_object_is_systemobject(object) == RT_EOK)
+ {
+ /* detach static objcet */
+ rt_object_detach(object);
+ }
+ else
+ {
+ /* delete dynamic object */
+ rt_object_delete(object);
+ }
}
}
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-30 17:40:40 +0000