add libdl and extension examples

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1080 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/module/SConstruct

@@ -32,5 +32,7 @@ Export('rtconfig')
 Export('projects')
 Export('TARGET')
 
-SConscript(RTT_ROOT + '/components/module/tetris/SConscript', variant_dir='build/tetris', duplicate=0)
-SConscript(RTT_ROOT + '/components/module/basicapp/SConscript', variant_dir='build/basicapp', duplicate=0)
+SConscript(RTT_ROOT + '/components/module/tetris/SConscript', duplicate=0)
+SConscript(RTT_ROOT + '/components/module/basicapp/SConscript', duplicate=0)
+SConscript(RTT_ROOT + '/components/module/extension/SConscript', duplicate=0)
+SConscript(RTT_ROOT + '/components/module/extapp/SConscript', duplicate=0)
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components/module/extapp/SConscript

+Import('env')
+Import('projects')
+Import('RTT_ROOT')
+Import('rtconfig')
+Import('TARGET')
+
+RTMLINKER = RTT_ROOT + '/tools/rtmlinker.exe '
+
+# group definitions
+group = {}
+group['name'] = 'examples'
+group['src'] = Glob('*.c')
+group['CCFLAGS'] = ''
+group['CPPPATH'] = [RTT_ROOT + '/include', RTT_ROOT + '/components/module', RTT_ROOT + '/components/libdl']
+group['CPPDEFINES'] = ''
+
+target = 'extapp.so'
+POST_ACTION = RTMLINKER + '-l ' + TARGET + ' -o extapp.mo ' + '$TARGET'
+
+# add group to project list
+projects.append(group)
+
+src_local = Glob('extapp.c')
+
+env.Append(CCFLAGS = group['CCFLAGS'])
+env.Append(CPPPATH = group['CPPPATH'])
+env.Append(CPPDEFINES = group['CPPDEFINES'])
+module_env = env.Clone(CPPDEFINE = 'RT_MODULE')
+module_env = env.Clone(CCFLAGS = ' -mcpu=arm920t -O0 -fPIC')
+module_env.Replace(LINK =  'arm-none-eabi-ld')
+module_env.Replace(LINKFLAGS = '-z max-page-size=0x4 -shared -fPIC -e rt_application_entry -nostdlib -s')
+module_env.Program(target, src_local) 
+module_env.AddPostAction(target, POST_ACTION) 
+

components/module/extapp/extapp.c

+#include <rtthread.h>
+#include <dlfcn.h>
+
+typedef void (*func)(void);
+
+int rt_application_entry(void)
+{
+	func f1, f2, f3, f4, f5;
+		
+	void* handle = dlopen("/mo/ext.so", RTLD_NOW);
+	if(handle != RT_NULL)
+	{
+		f1= (func)dlsym(handle, "function1");
+		f2= (func)dlsym(handle, "function2");
+		f3= (func)dlsym(handle, "function3");
+		f4= (func)dlsym(handle, "function4");
+		f5= (func)dlsym(handle, "function5");
+
+		if(f1 != RT_NULL) f1();
+		else rt_kprintf("dlsym function1 failed.\n");
+		if(f2 != RT_NULL) f2();
+		else rt_kprintf("dlsym function2 failed.\n");
+		if(f3 != RT_NULL) f3();
+		else rt_kprintf("dlsym function3 failed.\n");		
+		if(f4 != RT_NULL) f4();
+		else rt_kprintf("dlsym function4 failed.\n");
+		if(f5 != RT_NULL) f5();
+		else rt_kprintf("dlsym function5 failed.\n");
+	}
+	
+	dlclose(handle);
+
+	return 0;
+}
+

components/module/extension/SConscript

+Import('env')
+Import('projects')
+Import('RTT_ROOT')
+Import('rtconfig')
+Import('TARGET')
+
+RTMLINKER = RTT_ROOT + '/tools/rtmlinker.exe '
+
+# group definitions
+group = {}
+group['name'] = 'examples'
+group['src'] = Glob('*.c')
+group['CCFLAGS'] = ''
+group['CPPPATH'] = [RTT_ROOT + '/include', RTT_ROOT + '/components/module']
+group['CPPDEFINES'] = ''
+
+target = 'extension.so'
+POST_ACTION = RTMLINKER + '-l ' + TARGET + ' -o extension.mo ' + '$TARGET'
+
+# add group to project list
+projects.append(group)
+
+src_local = Glob('extension.c')
+
+env.Append(CCFLAGS = group['CCFLAGS'])
+env.Append(CPPPATH = group['CPPPATH'])
+env.Append(CPPDEFINES = group['CPPDEFINES'])
+module_env = env.Clone(CPPDEFINE = 'RT_MODULE')
+module_env = env.Clone(CCFLAGS = ' -mcpu=arm920t -O0 -fPIC')
+module_env.Replace(LINK =  'arm-none-eabi-ld')
+module_env.Replace(LINKFLAGS = '-z max-page-size=0x4 -e 0 -shared -fPIC -nostdlib -s')
+module_env.Program(target, src_local) 
+module_env.AddPostAction(target, POST_ACTION) 
+

components/module/extension/extension.c

+#include <rtthread.h>
+#include <rtm.h>
+
+void function1(void)
+{
+	rt_kprintf("Hello RT-Thread function1\n");
+}
+
+void function2(void)
+{
+	rt_kprintf("Hello RT-Thread function2\n");
+}
+
+void function3(void)
+{
+	rt_kprintf("Hello RT-Thread function3\n");
+}
+
+void function4(void)
+{
+	rt_kprintf("Hello RT-Thread function4\n");
+}
+
+void function5(void)
+{
+	rt_kprintf("Hello RT-Thread function5\n");
+}
+
+RTM_EXPORT(function1)
+RTM_EXPORT(function2)
+RTM_EXPORT(function3)
+RTM_EXPORT(function4)
+RTM_EXPORT(function5)
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