Merge pull request #2661 from BernardXiong/pre-release_v4.0.1

Pre-release for v4.0.1

Author: BernardXiong

examples/nanopb/SConscript

@@ -153,10 +153,10 @@ extern rt_hw_spinlock_t _rt_critical_lock;
 
 #define __RT_HW_SPIN_LOCK_INITIALIZER(lockname) {0}
 
-#define __RT_HW_SPIN_LOCK_UNLOCKED(lockname) \
- (struct rt_hw_spinlock ) __RT_HW_SPIN_LOCK_INITIALIZER(lockname)
+#define __RT_HW_SPIN_LOCK_UNLOCKED(lockname)    \
+    (rt_hw_spinlock_t) __RT_HW_SPIN_LOCK_INITIALIZER(lockname)
 
-#define RT_DEFINE_SPINLOCK(x)  struct rt_hw_spinlock x = __RT_HW_SPIN_LOCK_UNLOCKED(x)
+#define RT_DEFINE_SPINLOCK(x)  rt_hw_spinlock_t x = __RT_HW_SPIN_LOCK_UNLOCKED(x)
 
 /**
  *  ipi function

examples/nanopb/simple.c

@@ -34,8 +34,9 @@ rt_hw_interrupt_enable:
     bx  lr
 
 /*
- * void rt_hw_context_switch_to(rt_uint32 to);
- * r0 --> to
+ * void rt_hw_context_switch_to(rt_uint32 to, struct rt_thread *to_thread);
+ * r0 --> to (thread stack)
+ * r1 --> to_thread
  */
 .globl rt_hw_context_switch_to
 rt_hw_context_switch_to:
@@ -64,9 +65,10 @@ _guest_switch_lvl:
 
 .section .text.isr, "ax"
 /*
- * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to);
- * r0 --> from
- * r1 --> to
+ * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to, struct rt_thread *to_thread);
+ * r0 --> from (from_thread stack)
+ * r1 --> to (to_thread stack)
+ * r2 --> to_thread
  */
 .globl rt_hw_context_switch
 rt_hw_context_switch:
@@ -158,7 +160,7 @@ rt_hw_context_switch_interrupt:
     bl      rt_cpus_lock_status_restore
 
 #ifdef RT_USING_LWP
-    ldmfd sp, {r13,r14}^  @pop usr_sp usr_lr
+    ldmfd sp, {r13,r14}^    @pop usr_sp usr_lr
     add sp, #8
 #endif
 

examples/nanopb/simple.options

@@ -42,12 +42,16 @@ rt_base_t rt_cpus_lock(void)
     pcpu = rt_cpu_self();
     if (pcpu->current_thread != RT_NULL)
     {
-        if (pcpu->current_thread->cpus_lock_nest++ == 0)
+        register rt_uint16_t lock_nest = pcpu->current_thread->cpus_lock_nest;
+
+        pcpu->current_thread->cpus_lock_nest++;
+        if (lock_nest == 0)
         {
             pcpu->current_thread->scheduler_lock_nest++;
             rt_hw_spin_lock(&_cpus_lock);
         }
     }
+
     return level;
 }
 RTM_EXPORT(rt_cpus_lock);
@@ -61,7 +65,9 @@ void rt_cpus_unlock(rt_base_t level)
 
     if (pcpu->current_thread != RT_NULL)
     {
-        if (--pcpu->current_thread->cpus_lock_nest == 0)
+        pcpu->current_thread->cpus_lock_nest--;
+
+        if (pcpu->current_thread->cpus_lock_nest == 0)
         {
             pcpu->current_thread->scheduler_lock_nest--;
             rt_hw_spin_unlock(&_cpus_lock);

examples/nanopb/simple.pb.c

@@ -753,8 +753,8 @@ rt_err_t rt_mutex_take(rt_mutex_t mutex, rt_int32_t time)
 
                 if (thread->error != RT_EOK)
                 {
-                	/* interrupt by signal, try it again */
-                	if (thread->error == -RT_EINTR) goto __again;
+                    /* interrupt by signal, try it again */
+                    if (thread->error == -RT_EINTR) goto __again;
 
                     /* return error */
                     return thread->error;