Add some ipc related comments; Fix one dabort and iabort bug.

Ubiquitous/XiZi_AIoT/services/app/Makefile

@@ -23,7 +23,7 @@ INC_DIR = 	-I$(KERNEL_ROOT)/services/shell/letter-shell \
 			-I$(KERNEL_ROOT)/services/boards/$(BOARD) \
 			-I$(KERNEL_ROOT)/services/app 
 
-all: init simple_client simple_server shell fs_server test_priority readme.txt | bin
+all: init test_fs simple_client simple_server shell fs_server test_priority readme.txt | bin
 	../tools/mkfs/mkfs ./fs.img $^
 	@mv $(filter-out readme.txt, $^) bin
 	@mv *.o bin
@@ -40,6 +40,10 @@ init: init.o libfs_to_client.o libipc.o session.o libserial.o usyscall.o
 	@${ld} ${user_ldflags} -e main -o $@ $^ ${board_specs}
 	@${objdump} -S $@ > $@.asm
 
+test_fs: test_fs.o libfs_to_client.o libipc.o session.o libserial.o usyscall.o
+	@${ld} ${user_ldflags} -e main -o $@ $^ ${board_specs}
+	@${objdump} -S $@ > $@.asm
+
 simple_client: simple_client.o libserial.o libipc.o session.o simple_service.o libfs_to_client.o usyscall.o 
 	@${ld} ${user_ldflags} -e main -o $@ $^ ${board_specs}
 	@${objdump} -S $@ > $@.asm

Ubiquitous/XiZi_AIoT/services/app/simple_server.c

@@ -15,6 +15,8 @@
 #include "simple_service.h"
 #include "usyscall.h"
 
+/// @warning all the parameters should in the form of pointers
+///          for the true storing memory of parameters is session(shared memory between tasks)
 int IPC_DO_SERVE_FUNC(Ipc_add)(int* a, int* b)
 {
     return *a + *b;

Ubiquitous/XiZi_AIoT/services/app/test_fs.c

@@ -19,6 +19,7 @@
 #include "libfs_to_client.h"
 #include "usyscall.h"
 
+#define BLOCK_SIZE 256
 int main(int argc, char* argv[])
 {
     printf("file system test\n");
@@ -26,8 +27,6 @@ int main(int argc, char* argv[])
     struct Session session;
     connect_session(&session, "MemFS", 4096);
 
-    register_server("TEST_FS");
-
     int fd;
     char* fd_path = "/readme.txt";
     fd = open(&session, fd_path);
@@ -43,9 +42,12 @@ int main(int argc, char* argv[])
     printf("file content: %s\n", buffer);
 
     close(&session, fd);
-
     free_session(&session);
 
+    printf("file test done.\n");
+    printf("Test memry error %s.\n", 0x50000000);
+    printf("After error computing.\n");
+
     exit();
     return 0;
 }