diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index 4eb1651..51abdaa 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -8,7 +8,8 @@
             "defines": [
                 "_DEBUG",
                 "UNICODE",
-                "_UNICODE"
+                "_UNICODE",
+                "LINUX"
             ],
             "windowsSdkVersion": "10.0.22621.0",
             "compilerPath": "C:/cygwin64/bin/gcc.exe",
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 411469a..5352dcf 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -5,6 +5,8 @@
     "test1.h": "c",
     "stdint.h": "c",
     "exception.h": "c",
-    "mythread.h": "c"
+    "mythread.h": "c",
+    "ipc.h": "c",
+    "errno.h": "c"
   }
 }
\ No newline at end of file
diff --git a/main.c b/main.c
index 023b314..476aeb2 100644
--- a/main.c
+++ b/main.c
@@ -5,10 +5,11 @@
 #include "soft/exception.h"
 #include "soft/mythread.h"
 #include "unistd.h"
+#include "soft/debug.h"
 
 
 int thread_fun(void *t){
-  printf("run in thread_fun.\n");
+  DBG_INFO("run in thread_fun.\n");
 
   while(1){
     sleep(5);
@@ -22,8 +23,8 @@ int thread_fun(void *t){
 void SystemInit();
 extern char **environ;
 int main(int argc,char *argv[]){
-  int id;
-  printf("hello world.\n");
+  debug_init(NULL);
+  DBG_INFO("hello world.%ld\n",(size_t)pthread_self());
 
 
 
@@ -33,8 +34,8 @@ int main(int argc,char *argv[]){
   // }
 
   // printf("a+b=%d",test_add(3,5));
-  id=myth_create(thread_fun,NULL);
-  id=myth_create(NULL,NULL);
+  myth_create(thread_fun,NULL);
+  myth_create(NULL,NULL);
   // sleep(10);
   myth_join();
 }
@@ -56,11 +57,11 @@ typedef void (*slot_fun_def)(size_t a,size_t b,size_t c,size_t d,size_t e,size_t
 
 
 void funptr_test(){
-  printf("print from funptr_test fun.\n");
+  DBG_INFO("print from funptr_test fun.\n");
 }
 
 void add_test(int a,int b,void (*f)()){
-  printf("add_fun:%d+%d=%d\n",a,b,a+b);
+  DBG_INFO("add_fun:%d+%d=%d\n",a,b,a+b);
   f();
 }
 
diff --git a/make.py b/make.py
index 69c5108..1b5a398 100644
--- a/make.py
+++ b/make.py
@@ -28,17 +28,19 @@ CSRC = []
 
 CINC = ['-Isoft']
 
-CDEF = ["-DTEST"]
+CDEF = ["-DTEST","-DLINUX"]
 
 ASRC = []
 
 BUILD_DIR = 'build'
 
-TARGET = 'hello'
+TARGET = 'hello.exe'
 
 # CFLAG = ["-Wall -pedantic -specs=nano.specs -mcpu=cortex-m3 -mthumb -lc -lm -lnosys -Og -Tstm32_boot.ld",
 #          f"-Wl,-Map={BUILD_DIR}/{TARGET}.map,--cref -Wl,--gc-sections"]
-CFLAG = ["-Wall -pedantic -g"]
+# -pedantic 这一项是ISO语法检验
+CFLAG = ["-Wall -g"]
+
 
 # 找到指定后缀的文件
 def find_type(path:str,fix:list[str]):
@@ -82,6 +84,7 @@ def tran_path(path:str):
 
 # 判断是否需要重新生成
 def check_rebuild(dst:str,src:list[str]):
+  # print(f"src:{src}")
   if(not os.path.exists(dst)):
     return True
   dst_time=os.path.getmtime(dst)
@@ -91,6 +94,9 @@ def check_rebuild(dst:str,src:list[str]):
   src_time.sort()
   if(src_time[-1]>dst_time):
     return True
+  # for item in src_time:
+  #   if(item>dst_time):
+  #     return True
   return False
 
 
@@ -98,7 +104,14 @@ def check_rebuild(dst:str,src:list[str]):
 # 读取.d文件，返回依赖文件列表
 def read_depend_files(name:str):
   with open(name) as f:
-    t=f.readline()
+    lines=f.readlines()
+    t=''
+    for line in lines:
+      line=line.strip()
+      if(line[-1]=='\\'):
+        t+=line[:-1]
+      else:
+        t+=line
     t=t.split(':')[-1].strip()
     t=t.split(' ')
     # print(f"依赖列表{t}")
@@ -118,7 +131,8 @@ def build_depend(src:list[str]):
       ret=os.system(cmd)
       if(ret):
         exit()
-
+    else:
+      print(f"{i} 没有更新源文件")
 
 # 生成中间文件
 def build_object(src:list[str]):
@@ -135,9 +149,13 @@ def build_object(src:list[str]):
       cd=os.path.join(BUILD_DIR,cd)
       if(check_rebuild(dst,read_depend_files(cd))):
         cmd=f"{CC} -c {i} -o {dst} {flags}"
+      else:
+        print(f"{i} 没有更新依赖关系")
     elif(file_type in ['s','S','asm','ASM']):
       if(check_rebuild(dst,[i])):
         cmd=f"{AS} -c {i} -o {dst} {flags}"
+      else:
+        print(f"{i} 没有更新依赖关系")
     if(len(cmd)>0):
       print(cmd)
       ret=os.system(cmd)
@@ -160,13 +178,13 @@ def build_target(src:list[str]):
     if(ret):
       exit()
   else:
-    print("已是最新，无需要重新生成的目标")
+    print(f"{dst} 没有更新的链接文件")
 
 
 def main():
   global CSRC
   global ASRC
-  CSRC+=find_type('./',['c','C'])
+  CSRC+=find_type('.\\',['c','C'])
   # ASRC+=find_type('./',['s','S','asm','ASM'])
 
   if(not os.path.exists(BUILD_DIR)):
@@ -176,7 +194,7 @@ def main():
   build_depend(CSRC)
   print("生成对象文件")
   build_object(CSRC)
-  build_object(ASRC)
+  # build_object(ASRC)
   print("生成目标文件")
   build_target(CSRC+ASRC)
   # os.system(f"{HEX} {BUILD_DIR}/{TARGET} {BUILD_DIR}/{TARGET}.hex")
diff --git a/soft/debug.c b/soft/debug.c
new file mode 100644
index 0000000..612186a
--- /dev/null
+++ b/soft/debug.c
@@ -0,0 +1,162 @@
+
+#include "stdio.h"
+#include "stdarg.h"
+#include "debug.h"
+#include "string.h"
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/types.h>
+#include "errno.h"
+
+#define CONSOLEBUF_SIZE 1024
+
+
+#ifdef LINUX
+union semun{
+  int              val;    /* Value for SETVAL */
+  struct semid_ds *buf;    /* Buffer for IPC_STAT, IPC_SET */
+  unsigned short  *array;  /* Array for GETALL, SETALL */
+  struct seminfo  *__buf;  /* Buffer for IPC_INFO
+                              (Linux-specific) */
+};
+
+
+
+void _sem_take(int semid)//寰楀埌閽ュ寵
+{
+  struct sembuf sop;
+  sop.sem_num = 0;//鎺у埗绗竴涓俊鍙烽噺
+  sop.sem_op  = -1;//閽ュ寵鏁伴噺鍑忎竴6
+  sop.sem_flg = SEM_UNDO;
+  semop(semid,&sop,1);
+}
+
+void _sem_relase(int semid)//鏀惧洖閽ュ寵
+{
+  struct sembuf sop;
+  sop.sem_num = 0;
+  sop.sem_op  = 1;
+  sop.sem_flg = SEM_UNDO;
+  semop(semid,&sop,1);
+}
+
+int _sem_init(){
+  key_t key;
+  int mutex;
+  key = ftok(".",5345);
+  printf("sem init, key=%llu\n",key);
+  mutex = semget(key,1,IPC_CREAT);//鍒涘缓淇″彿閲�
+  printf("sem init, mutex=%d\n",mutex);
+  if(mutex<=0){
+    printf("%d\n",errno);
+  }
+  union semun set;
+  set.val = 1;//閽ュ寵鏁伴噺涓�0
+  semctl(mutex,0,SETVAL,set);
+  return mutex;
+}
+
+#endif
+
+#ifdef RT_THREAD
+
+#include "rtthread.h"
+
+#endif
+
+
+typedef struct{
+  int inited;
+	#ifdef RT_THREAD
+  struct rt_mutex mutex;
+	#endif
+  #ifdef LINUX
+  int mutex;
+  #endif
+  dbg_dev *dev;
+}self_def;
+
+static self_def g_data;
+
+
+
+static int dev_init(){
+  return 0;
+}
+static int dev_write(const uint8_t *data,size_t len){
+  size_t rb;
+  rb=fwrite(data,sizeof(uint8_t),len,stdout);
+  return (int)rb;
+}
+static dbg_dev g_dev_default={
+  .init=dev_init,
+  .write=dev_write,
+};
+
+
+
+
+int debug_init(dbg_dev *dev)
+{
+  self_def *self=&g_data;
+  if(dev==NULL){
+    dev=&g_dev_default;
+  }
+  if(self->inited==0)
+  {
+		#ifdef RT_THREAD
+    rt_mutex_init(&self->mutex,"debug_mutex",RT_IPC_FLAG_FIFO);
+		#endif
+    #ifdef LINUX
+    self->mutex=_sem_init();
+    #endif
+    self->dev=dev;
+    self->dev->init();
+    self->dev->write((const uint8_t *)"\r\n",2);
+    self->inited=1;
+    DBG_LOG("debug inited.\r\n");
+  }
+  return 0;
+}
+
+
+void debug_log(const char *file,const char *fun,int line,int level,const char *fmt, ...)
+{
+  self_def *self=&g_data;
+  if(self->inited==0) return;
+  va_list args;
+  size_t length;
+  static char log_buf[CONSOLEBUF_SIZE];
+  static const char *level_str[]={"[info] ","[log] ","[warn] ","[err] "};
+  static int level_str_len[]={7,6,7,6};
+  if(level<DBG_LEVEL_INFO||level>DBG_LEVEL_ERR) return;
+	#ifdef RT_THREAD
+  rt_mutex_take(&self->mutex,RT_WAITING_FOREVER);
+	#endif
+  #ifdef LINUX
+  _sem_take(self->mutex);
+  #endif
+  memcpy(log_buf,level_str[level],level_str_len[level]);
+  length=level_str_len[level];
+  length+=sprintf(log_buf + length,"%s|%s|%d| ",file,fun,line);
+
+  va_start(args, fmt);
+  length += vsnprintf(log_buf + length, CONSOLEBUF_SIZE - length - 3, fmt, args);
+  va_end(args);
+  if (length > CONSOLEBUF_SIZE - 3)
+    length = CONSOLEBUF_SIZE - 3;
+  if(log_buf[length-1]!='\n'){
+    memcpy(&log_buf[length],"\n",1);
+    length+=1;
+  }
+  log_buf[length]=0;
+  self->dev->write((const uint8_t *)log_buf,length);
+	#ifdef RT_THREAD
+  rt_mutex_release(&self->mutex);
+	#endif
+  #ifdef LINUX
+  _sem_relase(self->mutex);
+  #endif
+}
+
+
diff --git a/soft/debug.h b/soft/debug.h
new file mode 100644
index 0000000..61dfb11
--- /dev/null
+++ b/soft/debug.h
@@ -0,0 +1,68 @@
+#ifndef debug_h__
+#define debug_h__
+
+
+#include "stdint.h"
+#include "stdio.h"
+
+
+
+
+/*r{ 淇敼鏃ュ織鎵撳嵃绛夌骇 }c*/
+#define DBG_LOG_LEVEL DBG_LEVEL_INFO
+
+
+
+/*r{ 瀹氫箟鎵撳嵃鏁版嵁绛夌骇 }c*/
+#define DBG_LEVEL_INFO  0
+#define DBG_LEVEL_LOG   1
+#define DBG_LEVEL_WARN  2
+#define DBG_LEVEL_ERR   3
+
+
+#if (DBG_LOG_LEVEL<=DBG_LEVEL_INFO)
+#define DBG_INFO( ml_msg_, ...) \
+    DBG_LOG_(DBG_LEVEL_INFO, (ml_msg_), ##__VA_ARGS__)
+#else
+#define DBG_INFO( ml_msg_, ...)
+#endif
+#if (DBG_LOG_LEVEL<=DBG_LEVEL_LOG)
+#define DBG_LOG( ml_msg_, ...) \
+    DBG_LOG_(DBG_LEVEL_LOG, (ml_msg_), ##__VA_ARGS__)
+#else
+#define DBG_LOG( ml_msg_, ...)
+#endif
+#if (DBG_LOG_LEVEL<=DBG_LEVEL_WARN)
+#define DBG_WARN( ml_msg_, ...) \
+    DBG_LOG_(DBG_LEVEL_WARN, (ml_msg_), ##__VA_ARGS__)
+#else
+#define DBG_WARN( ml_msg_, ...)
+#endif
+#if (DBG_LOG_LEVEL<=DBG_LEVEL_ERR)
+#define DBG_ERR( ml_msg_, ...) \
+    DBG_LOG_(DBG_LEVEL_ERR, (ml_msg_), ##__VA_ARGS__)
+#else
+#define DBG_ERR( ml_msg_, ...)
+#endif
+
+
+#define DBG_LOG_(type_,msg_,...)\
+  debug_log(__FILE__,__func__,__LINE__,type_,(msg_),##__VA_ARGS__)
+
+
+
+typedef struct{
+  int (*init)();
+  int (*write)(const uint8_t *data,size_t len);
+}dbg_dev;
+
+
+
+
+int debug_init(dbg_dev *dev);
+
+void debug_log(const char *file,const char *fun,int line,int level,const char *fmt, ...);
+
+
+#endif
+
diff --git a/soft/exception.c b/soft/exception.c
index c78b7ea..93ea06a 100644
--- a/soft/exception.c
+++ b/soft/exception.c
@@ -8,12 +8,15 @@
 #include "stdarg.h"
 #include "exception.h"
 #include "mystdlib.h"
+#include "debug.h"
+#include "mythread.h"
 
 
 
 exception_def *exception(){
-  static exception_def frame={0};
-  return &frame;
+  exception_def *frame;
+  frame=&myth_self()->except;
+  return frame;
 }
 
 
@@ -54,31 +57,30 @@ void func_two();
 
 int test_add(int a, int b)
 {
-  printf("setjmp test.\n");
+  DBG_INFO("setjmp test.\n");
   try_{
-    printf("first enter setjmp.\n");
+    DBG_INFO("first enter setjmp.\n");
 
     try_{
-      printf("try in try.\n");
+      DBG_INFO("try in try.\n");
       func_two();
       // throw_("throw two err.");
     }catch_{
-      printf("file=%s,line=%d,err=%s.\n",file_(),line_(),err_());
+      DBG_WARN("file=%s,line=%d,err=%s.\n",file_(),line_(),err_());
     }
     throw_("throw a err.");
 
   }catch_{
-    printf("sssss\n");
-    printf("file=%s,line=%d,err=%s.\n",file_(),line_(),err_());
+    DBG_WARN("file=%s,line=%d,err=%s.\n",file_(),line_(),err_());
     try_{
-      printf("try in catch.\n");
+      DBG_INFO("try in catch.\n");
       func_two();
       // throw_("throw two err.");
     }catch_{
-      printf("file=%s,line=%d,err=%s.\n",file_(),line_(),err_());
+      DBG_WARN("file=%s,line=%d,err=%s.\n",file_(),line_(),err_());
     }
   }
-  printf("setjmp end.\n");
+  DBG_INFO("setjmp end.\n");
   return 0;
 }
 
@@ -87,7 +89,7 @@ int test_add(int a, int b)
 
 
 void func_two(){
-  printf("in func:%s\n",__func__);
+  DBG_INFO("in func:%s\n",__func__);
   void *p=mem_malloc(512);
   throw_("throw in func_two. in func:%s",__func__);
   mem_free(p);
diff --git a/soft/mystdlib.c b/soft/mystdlib.c
index 00d687f..401617f 100644
--- a/soft/mystdlib.c
+++ b/soft/mystdlib.c
@@ -3,6 +3,7 @@
 #include "string.h"
 #include "exception.h"
 #include "stdio.h"
+#include "debug.h"
 
 
 static void __mem_append_m(map_def **m,void *p);
@@ -17,7 +18,7 @@ void __mem_clear(map_def **m){
   for(size_t i=0;i<size;i++){
     if(map[i]){
       free((void *)map[i]);
-      printf("clear eme_p=%08lx\n",map[i]);
+      DBG_INFO("clear eme_p=%08lx\n",map[i]);
     }
   }
   free(*m);
@@ -38,7 +39,7 @@ void __mem_mov(map_def **d,map_def **s){
   }
   free(*s);
   (*s)=0;
-  printf("mem mov end.\n");
+  DBG_INFO("mem mov end.\n");
 }
 
 
@@ -51,7 +52,7 @@ void mem_free(void *p){
     for(size_t i=0;i<(*m)->map_size;i++){
       if((*m)->mem_map[i]==(size_t)p){
         (*m)->mem_map[i]=0;
-        printf("free eme_p=%08lx\n",(size_t)p);
+        DBG_INFO("free eme_p=%08lx\n",(size_t)p);
         (*m)->mam_used--;
         break;
       }
@@ -77,7 +78,7 @@ static void __mem_append_m(map_def **m,void *p){
     for(size_t i=0;i<(*m)->map_size;i++){
       if((*m)->mem_map[i]==0){
         (*m)->mem_map[i]=(size_t)p;
-        printf("append eme_p=%08lx\n",(size_t)p);
+        DBG_INFO("append eme_p=%08lx\n",(size_t)p);
         (*m)->mam_used++;
         break;
       }
diff --git a/soft/mythread.c b/soft/mythread.c
index 05ab92a..c97534c 100644
--- a/soft/mythread.c
+++ b/soft/mythread.c
@@ -5,17 +5,9 @@
 #include "mythread.h"
 #include "exception.h"
 #include "stdio.h"
+#include "debug.h"
 
 
-typedef struct _myth_def{
-  struct _myth_def *next;
-  struct _myth_def *last;
-  pthread_t th;
-  exception_def except;
-  size_t id;
-  int (*func)(void *);
-  void *arg;
-}myth_def;
 
 typedef struct{
   myth_def *head;
@@ -32,17 +24,18 @@ int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
 static void *p_thread(void *t){
   myth_def *th=(myth_def *)t;
   th->id=(size_t)pthread_self();
-  printf("func:%08lx start id=%d.\n",(size_t)th->func,th->id);
+  DBG_INFO("func:%08lx start id=%d.\n",(size_t)th->func,th->id);
   try_{
     if(!th->func){
       throw_("th->func was null.");
     }
     th->func(th->arg);
   }catch_{
-    printf("func:%08lx failed.\n",(size_t)th->func);
-    printf("file=%s,line=%d,err=%s\n",exception()->file,exception()->line,exception()->log);
+    DBG_WARN("func:%08lx failed.\n",(size_t)th->func);
+    DBG_WARN("file=%s,line=%d,err=%s\n",exception()->file,exception()->line,exception()->log);
   }
-  printf("func:%08lx end.\n",(size_t)th->func);
+  DBG_INFO("func:%08lx end.\n",(size_t)th->func);
+  th->end=1;
   return 0;
 }
 
@@ -85,3 +78,20 @@ int myth_join(){
   return 0;
 }
 
+
+
+myth_def *myth_self(){
+  self_def *s=&g_self;
+  myth_def *myth=s->head;
+  size_t id=(size_t)pthread_self();
+  while(myth){
+    if(myth->id==id){
+      return myth;
+    }
+    myth=myth->next;
+  }
+  printf("can not find myth.\n");
+  return NULL;
+}
+
+
diff --git a/soft/mythread.h b/soft/mythread.h
index 337f472..d9954dd 100644
--- a/soft/mythread.h
+++ b/soft/mythread.h
@@ -3,10 +3,27 @@
 
 
 #include "pthread.h"
+#include "exception.h"
+
+
+typedef struct _myth_def{
+  struct _myth_def *next;
+  struct _myth_def *last;
+  pthread_t th;
+  exception_def except;
+  size_t id;
+  size_t end;
+  int (*func)(void *);
+  void *arg;
+}myth_def;
+
+
+
+
 
 int myth_create(int (*func)(void *t),void *t);
 int myth_join();
-
+myth_def *myth_self();
 
 
 #endif