From c79fbd373fc8b300cb2f4564aa934a4e93b81547 Mon Sep 17 00:00:00 2001
From: heyuanjie <xx>
Date: Mon, 30 Jul 2018 11:12:12 +0800
Subject: [PATCH] =?UTF-8?q?[lwp]=E7=BB=99thread=E6=B7=BB=E5=8A=A0lwp?=
 =?UTF-8?q?=E6=88=90=E5=91=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/dfs/src/dfs.c |  2 +-
 components/lwp/lwp.c     | 13 +++++--------
 include/rtdef.h          |  6 +++++-
 src/thread.c             |  4 ++++
 4 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index 46e3e51229..954c7f0731 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -510,7 +510,7 @@ struct dfs_fdtable* dfs_fdtable_get(void)
 #ifdef RT_USING_LWP
     struct rt_lwp *lwp;
 
-    lwp = (struct rt_lwp *)rt_thread_self()->user_data;
+    lwp = (struct rt_lwp *)rt_thread_self()->lwp;
     if (lwp)
         fdt = &lwp->fdt;
     else
diff --git a/components/lwp/lwp.c b/components/lwp/lwp.c
index 17d5ec0b10..0bfeb4b103 100644
--- a/components/lwp/lwp.c
+++ b/components/lwp/lwp.c
@@ -46,14 +46,14 @@ extern void lwp_user_entry(void *args, const void *text, void *data);
 void lwp_set_kernel_sp(uint32_t *sp)
 {
     struct rt_lwp *user_data;
-    user_data = (struct rt_lwp *)rt_current_thread->user_data;
+    user_data = (struct rt_lwp *)rt_current_thread->lwp;
     user_data->kernel_sp = sp;
 }
 
 uint32_t *lwp_get_kernel_sp(void)
 {
     struct rt_lwp *user_data;
-    user_data = (struct rt_lwp *)rt_current_thread->user_data;
+    user_data = (struct rt_lwp *)rt_current_thread->lwp;
 
     return user_data->kernel_sp;
 }
@@ -286,7 +286,7 @@ static void lwp_cleanup(struct rt_thread *tid)
 
     dbg_log(DBG_INFO, "thread: %s, stack_addr: %08X\n", tid->name, tid->stack_addr);
 
-    lwp = (struct rt_lwp *)tid->user_data;
+    lwp = (struct rt_lwp *)tid->lwp;
 
     if (lwp->lwp_type == LWP_TYPE_DYN_ADDR)
     {
@@ -327,16 +327,13 @@ static void lwp_cleanup(struct rt_thread *tid)
 
 static void lwp_thread(void *parameter)
 {
-    volatile uint32_t tmp;
     rt_thread_t tid;
     struct rt_lwp *lwp;
 
-    rt_kprintf("%08x %08x\n", &tmp, tmp);
-
     lwp = (struct rt_lwp *)parameter;
     rt_lwp_mem_init(lwp);
     tid = rt_thread_self();
-    tid->user_data = (rt_uint32_t)lwp;
+    tid->lwp = lwp;
     tid->cleanup = lwp_cleanup;
 
     lwp_user_entry(lwp->args, lwp->text_entry, lwp->data);
@@ -344,7 +341,7 @@ static void lwp_thread(void *parameter)
 
 struct rt_lwp *rt_lwp_self(void)
 {
-    return (struct rt_lwp *)rt_thread_self()->user_data;
+    return (struct rt_lwp *)rt_thread_self()->lwp;
 }
 
 int exec(char *filename, int argc, char **argv)
diff --git a/include/rtdef.h b/include/rtdef.h
index 642ea0e729..7e7e63594f 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -556,7 +556,11 @@ struct rt_thread
 
     void (*cleanup)(struct rt_thread *tid);             /**< cleanup function when thread exit */
 
-    rt_uint32_t user_data;                              /**< private user data beyond this thread */
+    rt_uint32_t user_data;                             /**< private user data beyond this thread */
+
+#ifdef RT_USING_LWP
+    struct rt_lwp *lwp;    /**< if NULL it's a kernel thread */
+#endif
 };
 typedef struct rt_thread *rt_thread_t;
 
diff --git a/src/thread.c b/src/thread.c
index 9e5c97983b..b3d91b30d0 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -199,6 +199,10 @@ static rt_err_t _rt_thread_init(struct rt_thread *thread,
     thread->si_list     = RT_NULL;
 #endif
 
+#ifdef RT_USING_LWP
+    thread->lwp = RT_NULL;
+#endif
+
     RT_OBJECT_HOOK_CALL(rt_thread_inited_hook, (thread));
 
     return RT_EOK;