关于openocd支持rt-thread

发布于 2018-04-04 11:54:00 浏览：2899 订阅该版

10 个回答

armink 2018-04-04

这家伙很懒，什么也没写！

armink 2018-04-04

这家伙很懒，什么也没写！

bernard 2018-04-05

这家伙很懒，什么也没写！

zikim 2018-04-10

这家伙很懒，什么也没写！

zikim 2018-04-10

这家伙很懒，什么也没写！

使用info threads显示rt-thread线程信息

```
(gdb) info threads 
[New Thread 1]
  Id   Target Id         Frame 
  2    Thread 2 "" (Name: timer, State: Suspended, Priority: 8) rt_hw_context_switch (from=3255702948, to=3256519196) 
  3    Thread 3 "" (Name: mem_bw, State: Suspended, Priority: 4) rt_hw_context_switch (from=3256516892, to=3256519004) 
  4    Thread 4 "" (Name: mnt_task, State: Suspended, Priority: 7) rt_hw_context_switch (from=3256517084, to=3256516700) 
  5    Thread 5 "" (Name: ksrv_task, State: Suspended, Priority: 6) rt_hw_context_switch (from=3256517276, to=3256519196) 
  6    Thread 6 "" (Name: kb_input, State: Suspended, Priority: 3) rt_hw_context_switch (from=3256517468, to=3256516700) 
  7    Thread 7 "" (Name: mose_input, State: Suspended, Priority: 3) rt_hw_context_switch (from=3256517660, to=3256516700) 
  8    Thread 8 "" (Name: tp_input, State: Suspended, Priority: 3) rt_hw_context_switch (from=3256517852, to=3256516700) 
  9    Thread 9 "" (Name: mlstsk_001, State: Suspended, Priority: 1) rt_hw_context_switch (from=3256518044, to=3256518620) 
  10   Thread 10 "" (Name: pwm_task, State: Suspended, Priority: 5) rt_hw_context_switch (from=3256518236, to=3256519196) 
  11   Thread 11 "" (Name: mlstsk_003, State: Suspended, Priority: 1) rt_hw_context_switch (from=3256518620, to=3256518812) 
  12   Thread 12 "" (Name: mlstsk_004, State: Suspended, Priority: 1) rt_hw_context_switch (from=3256518812, to=3256519196) 
  13   Thread 13 "" (Name: mlstsk_005, State: Suspended, Priority: 14) rt_hw_context_switch (from=3256519004, to=3256520348) 
  14   Thread 14 "" (Name: mlstsk_006, State: Suspended, Priority: 14) rt_hw_context_switch (from=3256519196, to=3256519004) 
  15   Thread 15 "" (Name: mlstsk_007, State: Suspended, Priority: 14) rt_hw_context_switch (from=3256519388, to=3255699828) 
  16   Thread 16 "" (Name: mlstsk_008, State: Suspended, Priority: 1) rt_hw_context_switch (from=3256519580, to=3256518620) 
  17   Thread 17 "" (Name: mlstsk_009, State: Suspended, Priority: 14) rt_hw_context_switch (from=3256520156, to=3256519004) 
  18   Thread 18 "" (Name: mlstsk_010, State: Suspended, Priority: 14) rt_hw_context_switch (from=3256520348, to=3255699828) 
* 19   Thread 1 "" (Name: tidle, State: Ready, Priority: 254) rt_thread_idle_entry (parameter=0x0) 
(gdb) 
```

zikim 2018-04-10

这家伙很懒，什么也没写！

zikim 2018-04-10

这家伙很懒，什么也没写！

armink 2018-04-10

这家伙很懒，什么也没写！

wangxinyuan 2020-06-09

这家伙很懒，什么也没写！

[i=s] 本帖最后由 wangxinyuan 于 2020-6-9 14:08 编辑 [/i]

zikim,看到你实现的是arm926的openocd rtthread实现，我在你的基础上加了cortexm的实现，但是目前有点问题。
1.rtthread结构体的变量offset，我看你在contrib的文件夹里面定义了一个存放const变量的文件，我已经编译进rt-thread的源码了，但是openocd获取symbol的时候很奇怪,const变量在gdb加载后是个随机值，因此我直接在openocd里面把offset写死了。这个算是勉强解决，
2.cortexm的栈看不全，还没找到问题所在，考虑到stm32系列的cpu在rt-thread上用的比较多，想实现这一块，希望可以讨论。
线程显示，应该有4个线程但是只显示3个，后2个还不对：

```
(gdb) i threads 
warning: while parsing threads: not well-formed (invalid token)
  Id   Target Id         Frame
* 1    Thread 1 (Name: tidle, State: Ready, Priority: 31) 0x080090c6 in rt_thread_idle_entry (parameter=0x0)
    at /home/ezaxnnw/dev/prj/rt-thread/src/idle.c:232
  2    Thread 2 (Name: main, State: Suspended, Priority: 10) 0x00000000 in ?? ()
  3    Thread 3          0x00000000 in ?? ()

```

我的patch

```
diff --git a/src/rtos/rt-thread.c b/src/rtos/rt-thread.c
index a940e58..a924f0b 100644
--- a/src/rtos/rt-thread.c
+++ b/src/rtos/rt-thread.c
@@ -33,6 +33,7 @@
 #endif
 
 #define MY_RT_THREAD 1
+#define SELF_DEFINE_OFFSET 1
 
 struct rt_thread_params_thread
 {
@@ -60,6 +61,35 @@ struct rt_thread_params {
         rt_thread_params_thread_t threads;
 };
 
+static const struct stack_register_offset rtos_rt_thread_cortexm_stack_offsets[] = {
+        { -1,   32 },                /* r0   */
+        { -1,   32 },                /* r1   */
+        { -1,   32 },                /* r2   */
+        { -1,   32 },                /* r3   */
+        { 0x04, 32 },                /* r4   */
+        { 0x08, 32 },                /* r5   */
+        { 0x0c, 32 },                /* r6   */
+        { 0x10, 32 },                /* r7   */
+        { 0x14, 32 },                /* r8   */
+        { 0x18, 32 },                /* r9   */
+        { 0x1c, 32 },                /* r10  */
+        { 0x20, 32 },                /* r11  */
+        { -1,   32 },                /* r12  */
+        { -1,   32 },                /* sp   */
+        { -1,   32 },                /* lr   */
+        { -1,   32 },                /* pc   */
+        { -1,   32 },                /* xPSR */
+
+};
+
+const struct rtos_register_stacking rtos_rt_thread_cortexm_stacking = {
+       0x40,
+       -1,                                                                                                                           /* stack_growth_direction */
+       ARRAY_SIZE(rtos_rt_thread_cortexm_stack_offsets),                    /* num_output_registers */
+       rtos_generic_stack_align8,                                                        /* stack_alignment */
+       rtos_rt_thread_cortexm_stack_offsets                                                /* register_offsets */
+};
+
 static const struct stack_register_offset rtos_rt_thread_arm926_stack_offsets[] = {
 #if MY_RT_THREAD  //for my rt-thread code, the first value in stack is fcse
        { 0x08, 32 },        /* r0   */
@@ -131,6 +161,23 @@ static const struct rt_thread_params rt_thread_params_list[] = {
                 0,                                                                        /* num_threads */
                 NULL
         },
+        {
+                "cortex_m",                                                                /* target_name */
+                sizeof(uint32_t),                                                        /* pointer_width */
+                0,                                                                        /* thread_stack_offset */
+                0,                                                                        /* thread_name_offset */
+                0,                                                                        /* thread_state_offset */
+                0,                                                                        /* thread_priority_offset */
+                0,                                                                        /* thread_prev_offset */
+                0,                                                                        /* thread_next_offset */
+                0,                                                                        /* rt_object_prev_offset */
+                0,                                                                        /* rt_objcet_next_offset */
+                false,                                                                        /* thread_offsets_updated */
+                1,                                                                        /* threadid_start */
+                &rtos_rt_thread_cortexm_stacking,                                        /* stacking_info */
+                0,                                                                        /* num_threads */
+                NULL
+        },
 };
 
 static const char * const rt_thread_symbol_list[] = {
@@ -319,6 +366,7 @@ static int rt_thread_update_thread_offsets(struct rtos *rtos)
 
         if (params->thread_offsets_updated)
                 return ERROR_OK;
+#ifndef SELF_DEFINE_OFFSET
 
         const struct thread_offset_map {
                 enum rt_thread_symbol_values symbol_value;
@@ -371,13 +419,25 @@ static int rt_thread_update_thread_offsets(struct rtos *rtos)
                         return retval;
                 }
         }
-        
+#else
+
+                params->thread_stack_offset=28;
+                params->thread_name_offset=0;
+                params->thread_state_offset=52;
+                params->thread_priority_offset=53;
+                params->thread_prev_offset=16;
+                params->thread_next_offset=12;
+                params->rt_object_next_offset=4;
+                params->rt_object_prev_offset=8;
+#endif
         params->thread_offsets_updated = true;
         return ERROR_OK;
 }

```

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