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

Ubiquitous/XiZi_AIoT/Makefile

@@ -31,7 +31,9 @@ MAKEFILES  =$(KERNEL_ROOT)/.config
 
 export BSP_ROOT ?= $(KERNEL_ROOT)/services/boards/$(BOARD)
 export UBIQUITOUS_ROOT ?= ..
+ifneq ($(findstring $(BOARD), imx6q-sabrelite zynq7000-zc702), )
 include $(KERNEL_ROOT)/hardkernel/arch/arm/armv7-a/cortex-a9/preboot_for_$(BOARD)/config.mk
+endif
 export BSP_BUILD_DIR := $(KERNEL_ROOT)
 export HOSTTOOLS_DIR ?= $(KERNEL_ROOT)/services/tools/hosttools
 export CONFIG2H_EXE ?= $(HOSTTOOLS_DIR)/xsconfig.sh

Ubiquitous/XiZi_AIoT/hardkernel/intr/arm/armv7-a/cortex-a9/error_debug.c

@@ -91,6 +91,7 @@ void handle_undefined_instruction(struct trapframe* tf)
     panic("");
 }
 
+extern void context_switch(struct context**, struct context*);
 void dabort_handler(struct trapframe* r)
 {
     uint32_t dfs, dfa;
@@ -100,15 +101,16 @@ void dabort_handler(struct trapframe* r)
 
     if (r->pc < KERN_MEM_BASE) { // Exception occured in User space: exit
         ERROR("dabort in user space: %s\n", cur_cpu()->task->name);
-        LOG("program counter: 0x%x(%s) caused\n", r->pc, cur_cpu()->task);
+        LOG("program counter: 0x%x caused\n", r->pc);
         LOG("data abort at 0x%x, status 0x%x\n", dfa, dfs);
         _abort_reason(dfs);
         dump_tf(r);
     }
     if (cur_cpu()->task != NULL) {
         sys_exit();
+        context_switch(&cur_cpu()->task->main_thread.context, cur_cpu()->scheduler);
     } else { // Exception occured in Kernel space: panic
-        LOG("program counter: 0x%x(%s) caused\n", r->pc, cur_cpu()->task);
+        LOG("program counter: 0x%x caused\n", r->pc);
         LOG("data abort at 0x%x, status 0x%x\n", dfa, dfs);
         _abort_reason(dfs);
         dump_tf(r);
@@ -132,6 +134,7 @@ void iabort_handler(struct trapframe* r)
     }
     if (cur_cpu()->task != NULL) {
         sys_exit();
+        context_switch(&cur_cpu()->task->main_thread.context, cur_cpu()->scheduler);
     } else { // Exception occured in Kernel space: panic
         LOG("program counter: 0x%x(%s) caused\n", r->pc, cur_cpu()->task);
         LOG("prefetch abort at 0x%x, status 0x%x\n", ifa, ifs);

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;
 }

Ubiquitous/XiZi_AIoT/services/lib/ipc/libipc.h

@@ -182,6 +182,14 @@ void ipc_server_loop(struct IpcNode* ipc_node);
 #define IPC_SERVE(ipc_name) ipc_serve_##ipc_name
 #define IPC_DO_SERVE_FUNC(ipc_name) ipc_do_serve_##ipc_name
 
+/// when defining a ipc server:
+///     1. requires a IPC_SERVICES(server_name, interface_name, ...) to announce the name and interfaces that the server will support
+///     2. implement IPC_DO_SERVE_FUNC(interface_name) for each interface
+///     3. use IPC_SERVER_INTERFACE(interface_name, argc) to generate necessary helper functions
+///     4. use IPC_SERVER_REGISTER_INTERFACES(server_name, nr_interfaces, interface_names, ...) to bind interfaces to server after implementations
+///     5. use ipc_server_loop in main()
+///     Refer to simple_service.h, simple_service.c and simple_server.c for example
+
 #define IPC_INTERFACE(ipc_name, argc, ...)                                                                                                     \
     __always_inline static inline struct IpcMsg* IPC_CREATE_MSG_FUNC(ipc_name)(struct Session * session, _VA_FRONT_PTR_ARG##argc(__VA_ARGS__)) \
     {                                                                                                                                          \

Ubiquitous/XiZi_AIoT/softkernel/Makefile

@@ -1,4 +1,4 @@
-SRC_DIR := init memory trap task syscall ipc
+SRC_DIR := init memory trap task syscall
 
 SRC_FILES := main.c load_apps.S
 

Ubiquitous/XiZi_AIoT/softkernel/ipc/Makefile

@@ -1,3 +0,0 @@
-SRC_FILES := share_page.c 
-
-include $(KERNEL_ROOT)/compiler.mk

Ubiquitous/XiZi_AIoT/softkernel/memory/Makefile

@@ -1,3 +1,3 @@
-SRC_FILES:= kalloc.c pagetable.c pagetable_level2.c buddy.c object_allocator.c
+SRC_FILES:= kalloc.c pagetable.c pagetable_level2.c buddy.c object_allocator.c share_page.c
 
 include $(KERNEL_ROOT)/compiler.mk

Ubiquitous/XiZi_AIoT/softkernel/trap/default_irq_handler.c

@@ -60,7 +60,7 @@ void intr_irq_dispatch(struct trapframe* tf)
 
     p_intr_driver->cpu_irq_disable();
     // enter irq
-    uint32_t int_info = 0;
+    uintptr_t int_info = 0;
     if ((int_info = p_intr_driver->hw_before_irq()) == 0) {
         return;
     }