diff --git a/.vscode/launch.json b/.vscode/launch.json
index 2e7af5a23..1d17ad202 100755
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -10,7 +10,7 @@
             "cwd": "${fileDirname}",
             "environment": [],
             "externalConsole": false,
-            "miDebuggerPath": "/home/zhangzheng/gcc-arm-none-eabi-5_4-2016q3/bin/arm-none-eabi-gdb",
+            "miDebuggerPath": "/opt/homebrew/bin/arm-none-eabi-gdb",
             "miDebuggerServerAddress": "127.0.0.1:3333",
             "MIMode": "gdb",
             "setupCommands": [
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55cbdf21a..49dae487a 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.13)
 set(CMAKE_C_COMPILER_WORKS TRUE)
 set(CMAKE_CXX_COMPILER_WORKS TRUE)
+SET(CMAKE_SYSTEM_NAME Linux) 
+set(CMAKE_SYSTEM_PROCESSOR arm)
 include(setting.cmake)
 enable_language(ASM C CXX)
 project(mkrtos)
diff --git a/build.sh b/build.sh
index 3d289a6c1..aeb768746 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
-export TOOLCHAIN=/home/zhangzheng/gcc-arm-none-eabi-5_4-2016q3/bin/
-export TOOLCHAIN_LIB=/home/zhangzheng/gcc-arm-none-eabi-5_4-2016q3/lib/gcc/arm-none-eabi/5.4.1/armv7-m
+export TOOLCHAIN=/opt/homebrew/bin/
+export TOOLCHAIN_LIB=/opt/homebrew/lib/gcc/arm-none-eabi/13.2.0/thumb
 export KNL=mkrtos
 export KEN_OFFSET=0x2000
 export INIT_OFFSET=0x10000
diff --git a/mkrtos_user/lib/mlibc/crt/start.S b/mkrtos_user/lib/mlibc/crt/start.S
index 21e6275da..8eaa04e1f 100644
--- a/mkrtos_user/lib/mlibc/crt/start.S
+++ b/mkrtos_user/lib/mlibc/crt/start.S
@@ -1,5 +1,5 @@
     .syntax unified
-    .section .first, #execinstr
+    .section .first
     
     .globl reloc
 
diff --git a/mkrtos_user/lib/mlibc/crt/start_init.S b/mkrtos_user/lib/mlibc/crt/start_init.S
index e85b47652..7913cf52d 100644
--- a/mkrtos_user/lib/mlibc/crt/start_init.S
+++ b/mkrtos_user/lib/mlibc/crt/start_init.S
@@ -1,5 +1,5 @@
     .syntax unified
-    .section .first, #execinstr
+    .section .first
     
     .globl reloc
     .globl data_offset
diff --git a/mkrtos_user/lib/sys_util/inc/u_ns.h b/mkrtos_user/lib/sys_util/inc/u_ns.h
new file mode 100644
index 000000000..807a36460
--- /dev/null
+++ b/mkrtos_user/lib/sys_util/inc/u_ns.h
@@ -0,0 +1,6 @@
+#pragma once
+
+#include "u_types.h"
+
+int cli_ns_register(const char *name, obj_handler_t hd);
+int cli_ns_query(const char *name, obj_handler_t *ret_hd);
diff --git a/mkrtos_user/lib/sys_util/src/u_ns.c b/mkrtos_user/lib/sys_util/src/u_ns.c
new file mode 100644
index 000000000..1dc2e7b34
--- /dev/null
+++ b/mkrtos_user/lib/sys_util/src/u_ns.c
@@ -0,0 +1,93 @@
+
+
+#include "u_types.h"
+#include "u_ipc.h"
+#include "u_thread.h"
+#include "u_prot.h"
+#include "u_env.h"
+#include "u_arch.h"
+#include "u_util.h"
+#include "u_hd_man.h"
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+enum ns_op
+{
+    OP_REGISTER,
+    OP_QUERY,
+};
+/**
+ * @brief 暂时手动填充数据，后期改为RPC。TODO:
+ *
+ * @param buf
+ * @param len
+ * @return int
+ */
+int cli_ns_register(const char *name, obj_handler_t hd)
+{
+    ipc_msg_t *ipc_msg;
+    msg_tag_t tag;
+    void *buf;
+
+    int len = strlen(name);
+
+    len = MIN(len, IPC_MSG_SIZE - WORD_BYTES * 2 - 1);
+    // 获取发送数据的buf
+    thread_msg_buf_get(THREAD_MAIN, (umword_t *)(&buf), NULL);
+    ipc_msg = (ipc_msg_t *)buf;
+    // 发送的正常数据
+    ipc_msg->msg_buf[0] = OP_REGISTER;
+    ipc_msg->msg_buf[1] = len + 1;
+    // 映射数据
+    ipc_msg->map_buf[0] = vpage_create_raw3(0, 0, hd).raw;
+
+    strncpy((char *)(&ipc_msg->msg_buf[2]), name, IPC_MSG_SIZE - WORD_BYTES * 2);
+    ((char *)(&ipc_msg->msg_buf[2]))[IPC_MSG_SIZE - WORD_BYTES * 2 - 1] = 0;
+
+    // 发送ipc
+    tag = ipc_call(u_get_global_env()->ns_hd,
+                   msg_tag_init4(0, 2 + ROUND_UP(len, WORD_BYTES), 1, 0),
+                   ipc_timeout_create2(0, 0));
+    return msg_tag_get_val(tag);
+}
+int cli_ns_query(const char *name, obj_handler_t *ret_hd)
+{
+    ipc_msg_t *ipc_msg;
+    msg_tag_t tag;
+    void *buf;
+    obj_handler_t new_fd;
+    assert(ret_hd);
+
+    new_fd = handler_alloc();
+
+    if (new_fd == HANDLER_INVALID)
+    {
+        return -ENOMEM;
+    }
+    int len = strlen(name);
+
+    len = MIN(len, IPC_MSG_SIZE - WORD_BYTES * 2 - 1);
+    // 获取发送数据的buf
+    thread_msg_buf_get(THREAD_MAIN, (umword_t *)(&buf), NULL);
+    ipc_msg = (ipc_msg_t *)buf;
+    // 发送的正常数据
+    ipc_msg->msg_buf[0] = OP_QUERY;
+    ipc_msg->msg_buf[1] = len + 1;
+    // 映射数据
+    ipc_msg->map_buf[0] = vpage_create_raw3(0, 0, new_fd).raw;
+
+    strncpy((char *)(&ipc_msg->msg_buf[2]), name, IPC_MSG_SIZE - WORD_BYTES * 2);
+    ((char *)(&ipc_msg->msg_buf[2]))[IPC_MSG_SIZE - WORD_BYTES * 2 - 1] = 0;
+
+    // 发送ipc
+    tag = ipc_call(u_get_global_env()->ns_hd,
+                   msg_tag_init4(0, 2 + ROUND_UP(len, WORD_BYTES), 0, 0),
+                   ipc_timeout_create2(0, 0));
+
+    if (msg_tag_get_val(tag) < 0)
+    {
+        handler_free_umap(new_fd);
+    }
+
+    return msg_tag_get_val(tag);
+}
diff --git a/mkrtos_user/server/fs/fatfs/CMakeLists.txt b/mkrtos_user/server/fs/fatfs/CMakeLists.txt
index 92d969919..3051ffbee 100644
--- a/mkrtos_user/server/fs/fatfs/CMakeLists.txt
+++ b/mkrtos_user/server/fs/fatfs/CMakeLists.txt
@@ -35,7 +35,7 @@ add_dependencies(
 )
 set_target_properties(
     fatfs.elf PROPERTIES LINK_FLAGS
-    "-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds -pie --gc-section "
+    "-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds -pie --gc-section  -no-dynamic-linker --no-warn-rwx-segments"
 )
 add_custom_target(
     fatfs_dump ALL
diff --git a/mkrtos_user/server/init/CMakeLists.txt b/mkrtos_user/server/init/CMakeLists.txt
index 75584a881..6ae404299 100644
--- a/mkrtos_user/server/init/CMakeLists.txt
+++ b/mkrtos_user/server/init/CMakeLists.txt
@@ -33,7 +33,7 @@ add_dependencies(init.elf
 muslc
 )
 set_target_properties(init.elf PROPERTIES LINK_FLAGS
-"-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds -pie --gc-section "
+"-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds -pie --gc-section  -no-dynamic-linker --no-warn-rwx-segments"
 )
 #-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds
 add_custom_target(
diff --git a/mkrtos_user/server/init/link.lds b/mkrtos_user/server/init/link.lds
index d2b6fc0f9..4c5c55b26 100644
--- a/mkrtos_user/server/init/link.lds
+++ b/mkrtos_user/server/init/link.lds
@@ -1,4 +1,5 @@
 ENTRY(_start_)
+
 SECTIONS
 {
     .text : {
diff --git a/mkrtos_user/server/init/src/namespace.c b/mkrtos_user/server/init/src/namespace.c
index b51a8c3e3..1cd323c87 100644
--- a/mkrtos_user/server/init/src/namespace.c
+++ b/mkrtos_user/server/init/src/namespace.c
@@ -11,13 +11,13 @@
 
 typedef struct namespace_entry
 {
-    char path[NAMESPACE_PATH_LEN];
-    obj_handler_t hd;
+    char path[NAMESPACE_PATH_LEN]; //!< 服务的路径名
+    obj_handler_t hd;              //!< 服务的fd
 } namespace_entry_t;
 
 typedef struct namespace
 {
-    namespace_entry_t ne_list[NAMESAPCE_NR];
+    namespace_entry_t ne_list[NAMESAPCE_NR]; //!< 服务列表
 }
 namespace_t;
 
@@ -79,7 +79,7 @@ int ns_query(const char *path, obj_handler_t *hd)
 {
     for (int i = 0; i < NAMESAPCE_NR; i++)
     {
-        if (ns.ne_list[i].hd == HANDLER_INVALID)
+        if (ns.ne_list[i].hd != HANDLER_INVALID)
         {
             if (strncmp(ns.ne_list[i].path, path, NAMESPACE_PATH_LEN) == 0)
             {
@@ -90,7 +90,7 @@ int ns_query(const char *path, obj_handler_t *hd)
     }
     return -1;
 }
-obj_handler_t pre_alloc_hd = HANDLER_INVALID;
+obj_handler_t pre_alloc_hd = HANDLER_INVALID; //!< 预备一个可用的fd
 int ns_pre_alloc_map_fd(ipc_msg_t *msg)
 {
     obj_handler_t hd = handler_alloc();
@@ -110,7 +110,7 @@ msg_tag_t ns_dispatch(ipc_msg_t *msg)
 
     switch (msg->msg_buf[0])
     {
-    case OP_REGISTER:
+    case OP_REGISTER: //!< 服务注册
     {
         size_t len = msg->msg_buf[1];
         if (len > NAMESPACE_PATH_LEN)
@@ -124,9 +124,24 @@ msg_tag_t ns_dispatch(ipc_msg_t *msg)
         tag = msg_tag_init4(0, 0, 0, ret);
     }
     break;
-    case OP_QUERY:
-        tag = msg_tag_init4(0, 0, 0, 0);
-        break;
+    case OP_QUERY: //!< 服务申请
+    {
+        obj_handler_t hd;
+        int ret = ns_query(((char *)&(msg->msg_buf[2])), &hd);
+        if (ret < 0)
+        {
+            tag = msg_tag_init4(0, 0, 0, ret);
+        }
+        else
+        {
+            size_t len = msg->msg_buf[1];
+
+            msg->map_buf[0] = hd;
+            printf("query..\n");
+            tag = msg_tag_init4(0, 0, 1, ret);
+        }
+    }
+    break;
     default:
         tag = msg_tag_init4(0, 0, 0, -ENOSYS);
         break;
diff --git a/mkrtos_user/server/shell/CMakeLists.txt b/mkrtos_user/server/shell/CMakeLists.txt
index 15412d96f..d8c4bf079 100644
--- a/mkrtos_user/server/shell/CMakeLists.txt
+++ b/mkrtos_user/server/shell/CMakeLists.txt
@@ -38,7 +38,7 @@ add_dependencies(shell.elf
 muslc
 )
 set_target_properties(shell.elf PROPERTIES LINK_FLAGS
-"-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds -pie --gc-section "
+"-T ${CMAKE_CURRENT_SOURCE_DIR}/link.lds -pie --gc-section -no-dynamic-linker --no-warn-rwx-segments"
 )
 add_custom_target(
     shell_dump ALL
diff --git a/mkrtos_user/server/shell/link.lds b/mkrtos_user/server/shell/link.lds
index d2b6fc0f9..4c5c55b26 100644
--- a/mkrtos_user/server/shell/link.lds
+++ b/mkrtos_user/server/shell/link.lds
@@ -1,4 +1,5 @@
 ENTRY(_start_)
+
 SECTIONS
 {
     .text : {
diff --git a/mkrtos_user/server/shell/src/main.c b/mkrtos_user/server/shell/src/main.c
index f8a6e1a9b..e53ac2fe4 100644
--- a/mkrtos_user/server/shell/src/main.c
+++ b/mkrtos_user/server/shell/src/main.c
@@ -8,11 +8,13 @@
 #include "u_ipc.h"
 #include "u_env.h"
 #include "u_hd_man.h"
+#include "u_ns.h"
 #include "test.h"
 #include <assert.h>
 #include <stdio.h>
 #include <malloc.h>
 #include <string.h>
+
 void malloc_test(void)
 {
     void *mem = malloc(1024);
@@ -30,24 +32,18 @@ void malloc_test(void)
 }
 void ns_test(void)
 {
-    char *buf;
-    ipc_msg_t *ipc_msg;
+    int ret;
     obj_handler_t tmp_ipc_hd;
 
     tmp_ipc_hd = handler_alloc();
     assert(tmp_ipc_hd != HANDLER_INVALID);
     msg_tag_t tag = factory_create_ipc(FACTORY_PROT, vpage_create_raw3(0, 0, tmp_ipc_hd));
     assert(msg_tag_get_val(tag) >= 0);
-
-    thread_msg_buf_get(THREAD_MAIN, (umword_t *)(&buf), NULL);
-    ipc_msg = (ipc_msg_t *)buf;
-    ipc_msg->msg_buf[0] = 0;
-    ipc_msg->msg_buf[1] = strlen("shell") + 1;
-    ipc_msg->map_buf[0] = vpage_create_raw3(0, 0, tmp_ipc_hd).raw;
-    strcpy((char *)(&ipc_msg->msg_buf[2]), "shell");
-    tag = ipc_call(u_get_global_env()->ns_hd, msg_tag_init4(0, 2 + ROUND_UP(strlen("shell"), WORD_BYTES), 1, 0), ipc_timeout_create2(0, 0));
-    printf("msg %d\n", tag.msg_buf_len);
-    handler_free_umap(tmp_ipc_hd);
+    ret = cli_ns_register("shell", tmp_ipc_hd);
+    assert(ret >= 0);
+    ret = cli_ns_query("shell", &tmp_ipc_hd);
+    assert(ret >= 0);
+    
 }
 int main(int argc, char *args[])
 {
diff --git a/setting.cmake b/setting.cmake
index 0c50087b3..a25310889 100755
--- a/setting.cmake
+++ b/setting.cmake
@@ -25,7 +25,7 @@ set(CMAKE_C_FLAGS "-mcpu=cortex-m3 -mthumb -O0 -g -lc -lrdimon -mfloat-abi=soft
 -nostartfiles -nodefaultlibs -nostdlib -nostdinc -Xlinker  \
 --gc-sections -fno-stack-protector \
 " CACHE STRING "" FORCE)
-
+message(${CMAKE_C_FLAGS})
 set(CMAKE_CXX_FLAGS "-mcpu=cortex-m3 -mthumb -mno-thumb-interwork \
 -mfix-cortex-m3-ldrd -O0 -g -std=c++11 \
 -fmessage-length=0 -Xlinker --print-map -Wall -W -fno-stack-protector -g \