Support thread.

Ubiquitous/XiZi_AIoT/services/app/Makefile

@@ -26,7 +26,7 @@ INC_DIR = 	-I$(KERNEL_ROOT)/services/shell/letter-shell \
 			-I$(KERNEL_ROOT)/services/app 
 
 ifeq ($(BOARD), imx6q-sabrelite)
-all: init test_fs simple_client simple_server shell fs_server test_irq_hdlr test_irq_block test_irq_send eth_driver epit_server readme.txt | bin
+all: init test_fs simple_client simple_server shell fs_server test_thread test_irq_hdlr test_irq_block test_irq_send eth_driver epit_server readme.txt | bin
 else 
 all: init test_fs simple_client simple_server shell fs_server test_irq_hdlr readme.txt | bin
 endif
@@ -52,6 +52,10 @@ epit_server: timer.o epit.o ccm_pll.o usyscall.o arch_usyscall.o libserial.o pri
 	@${objdump} -S $@ > $@.asm
 endif
 
+test_thread: test_thread.o libserial.o printf.o usyscall.o arch_usyscall.o
+	@${ld} ${user_ldflags} -e main -o $@ $^ ${board_specs}
+	@${objdump} -S $@ > $@.asm
+
 test_irq_block: test_irq_block.o libserial.o printf.o libipc.o session.o usyscall.o arch_usyscall.o libmem.o
 	@${ld} ${user_ldflags} -e main -o $@ $^ ${board_specs}
 	@${objdump} -S $@ > $@.asm

Ubiquitous/XiZi_AIoT/services/app/test_thread.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+#include "libserial.h"
+#include "usyscall.h"
+
+static int global_value;
+
+int sub_thread_entry(int argc, char** argv)
+{
+    for (int i = 0; i < 1000; i++) {
+        global_value++;
+        printf("[gval]: %d\n", global_value);
+    }
+    exit(0);
+    return 0;
+}
+
+int main(int argc, char** argv)
+{
+    global_value = 0;
+
+    for (int i = 0; i < 10; i++) {
+        global_value++;
+        printf("|gval|: %d\n", global_value);
+    }
+
+    char* task_param[2] = { "add_gval", NULL };
+    int tid = thread(sub_thread_entry, "add_gval", task_param);
+
+    for (int i = 0; i < 1000; i++) {
+        global_value++;
+        printf("|gval|: %d\n", global_value);
+    }
+
+    exit(0);
+    return 0;
+}

Ubiquitous/XiZi_AIoT/services/fs/fs_server/fs.c

@@ -57,7 +57,7 @@ static int InodeFreeRecursive(struct Inode* dp);
 static char* PathElementExtract(char* path, char* name);
 static uint32_t InodeBlockMapping(struct Inode* inode, uint32_t block_num);
 
-#define MAX_SUPPORT_FD 2048
+#define MAX_SUPPORT_FD 4096
 static struct FileDescriptor fd_table[MAX_SUPPORT_FD];
 
 struct MemFsRange MemFsRange;

Ubiquitous/XiZi_AIoT/services/fs/fs_server/fs_server.c

@@ -23,7 +23,7 @@ struct CwdPair {
     struct Inode* Inode;
 };
 
-#define MAX_SUPPORT_SESSION 2048
+#define MAX_SUPPORT_SESSION 4096
 static struct CwdPair session_cwd[MAX_SUPPORT_SESSION];
 
 static struct CwdPair* get_session_cwd(void)

Ubiquitous/XiZi_AIoT/services/lib/usyscall/usyscall.c

@@ -26,6 +26,11 @@ int spawn(struct Session* session, int fd, ipc_read_fn ipc_read, ipc_fsize_fn ip
     return ret;
 }
 
+int thread(void* entry, char* name, char** argv)
+{
+    return syscall(SYSCALL_THREAD, (uintptr_t)entry, (uintptr_t)name, (uintptr_t)argv, 0);
+}
+
 void exit(int status)
 {
     syscall(SYSCALL_EXIT, (uintptr_t)status, 0, 0, 0);

Ubiquitous/XiZi_AIoT/services/lib/usyscall/usyscall.h

@@ -27,7 +27,7 @@
 #define SYSCALL_POLL_SESSION    7   // server poll for it's server sessions
 #define SYSCALL_CLOSE_SESSION   8   // client close it's client sessions
 
-#define SYSCALL_EXEC            9   // run elf using current task
+#define SYSCALL_THREAD          9   // generate a thread using old memspace
 #define SYSCALL_SYS_STATE       10  // run system state
 #define SYSCALL_REGISTER_IRQ    11  //
 
@@ -65,6 +65,7 @@ typedef int (*ipc_write_fn)(struct Session* session, int fd, char* src, int offs
 int syscall(int sys_num, intptr_t a1, intptr_t a2, intptr_t a3, intptr_t a4);
 
 int spawn(struct Session* session, int fd, ipc_read_fn ipc_read, ipc_fsize_fn ipc_fsize, char* name, char** argv);
+int thread(void* entry, char* name, char** argv);
 void exit(int status);
 int yield(task_yield_reason reason);
 int kill(int pid);

Ubiquitous/XiZi_AIoT/services/shell/letter-shell/shell_cfg.h

@@ -225,7 +225,7 @@
 /**
  * @brief shell默认用户
  */
-#define SHELL_DEFAULT_USER "letter"
+#define SHELL_DEFAULT_USER "xizi"
 #endif /** SHELL_DEFAULT_USER */
 
 #ifndef SHELL_DEFAULT_USER_PASSWORD