diff --git a/Core/Queue.cpp b/Core/Queue.cpp
index 4499307a..991751f7 100644
--- a/Core/Queue.cpp
+++ b/Core/Queue.cpp
@@ -22,15 +22,8 @@ void Queue::Clear()
 	_size	= 0;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
-void Queue::Enqueue(byte dat)
+// 关键性代码，放到开头
+INROOT void Queue::Enqueue(byte dat)
 {
 	int total	= _s.Capacity();
 	if(!total) _s.SetLength(64);
@@ -47,7 +40,7 @@ void Queue::Enqueue(byte dat)
 	ExitCritical();
 }
 
-byte Queue::Dequeue()
+INROOT byte Queue::Dequeue()
 {
 	if(_size == 0) return 0;
 
@@ -70,13 +63,6 @@ byte Queue::Dequeue()
 	return dat;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
 uint Queue::Write(const Buffer& bs)
 {
 	int total	= _s.Capacity();
diff --git a/Core/_Core.h b/Core/_Core.h
index 1e0b59c2..f2cbff89 100644
--- a/Core/_Core.h
+++ b/Core/_Core.h
@@ -24,4 +24,11 @@ void assert_failed2(const char* msg, const char* file, unsigned int line);
 
 #endif
 
+// 关键性代码放到开头
+#if !defined(TINY)
+	#define INROOT __attribute__((section(".InRoot")))
+#else
+	#define INROOT
+#endif
+
 #endif
diff --git a/Kernel/Interrupt.cpp b/Kernel/Interrupt.cpp
index d1e162ea..571a85a4 100644
--- a/Kernel/Interrupt.cpp
+++ b/Kernel/Interrupt.cpp
@@ -39,15 +39,8 @@ bool TInterrupt::Deactivate(short irq)
     return OnDeactivate(irq);
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
-void TInterrupt::Process(uint num) const
+// 关键性代码，放到开头
+INROOT void TInterrupt::Process(uint num) const
 {
 	auto& inter	= Interrupt;
 	//assert_param(num < VectorySize);
@@ -80,7 +73,7 @@ void TInterrupt::Halt()
 /******************************** SmartIRQ ********************************/
 
 // 智能IRQ，初始化时备份，销毁时还原
-SmartIRQ::SmartIRQ(bool enable)
+INROOT SmartIRQ::SmartIRQ(bool enable)
 {
 	_state = TInterrupt::GlobalState();
 	if(enable)
@@ -89,7 +82,7 @@ SmartIRQ::SmartIRQ(bool enable)
 		TInterrupt::GlobalDisable();
 }
 
-SmartIRQ::~SmartIRQ()
+INROOT SmartIRQ::~SmartIRQ()
 {
 	//__set_PRIMASK(_state);
 	if(_state)
@@ -98,14 +91,6 @@ SmartIRQ::~SmartIRQ()
 		TInterrupt::GlobalEnable();
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
-
 /******************************** Lock ********************************/
 
 #include "TTime.h"
diff --git a/Kernel/Sys.cpp b/Kernel/Sys.cpp
index 634b0a96..133c4622 100644
--- a/Kernel/Sys.cpp
+++ b/Kernel/Sys.cpp
@@ -16,15 +16,8 @@ struct HandlerRemap StrBoot __attribute__((at(0x2000fff0)));
     #define BIT(x)	(1 << (x))
 #endif
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
-TSys::TSys()
+// 关键性代码，放到开头
+INROOT TSys::TSys()
 {
 	Config	= nullptr;
 
@@ -44,14 +37,6 @@ TSys::TSys()
 	Started	= false;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
-
 void TSys::Init(void)
 {
 	InitClock();
@@ -106,15 +91,8 @@ void TSys::RemoveTask(uint& taskid) const
 	taskid = 0;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
-bool TSys::SetTask(uint taskid, bool enable, int msNextTime) const
+// 关键性代码，放到开头
+INROOT bool TSys::SetTask(uint taskid, bool enable, int msNextTime) const
 {
 	if(!taskid) return false;
 
@@ -127,7 +105,7 @@ bool TSys::SetTask(uint taskid, bool enable, int msNextTime) const
 }
 
 // 改变任务周期
-bool TSys::SetTaskPeriod(uint taskid, int period) const
+INROOT bool TSys::SetTaskPeriod(uint taskid, int period) const
 {
 	if(!taskid) return false;
 
@@ -167,11 +145,11 @@ void TSys::Reboot(int msDelay) const
 }
 
 // 系统启动后的毫秒数
-UInt64 TSys::Ms() const { return Time.Current(); }
+INROOT UInt64 TSys::Ms() const { return Time.Current(); }
 // 系统绝对当前时间，秒
-uint TSys::Seconds() const { return Time.Seconds + Time.BaseSeconds; }
+INROOT uint TSys::Seconds() const { return Time.Seconds + Time.BaseSeconds; }
 
-void TSys::Sleep(uint ms) const
+INROOT void TSys::Sleep(uint ms) const
 {
 	// 优先使用线程级睡眠
 	if(OnSleep)
@@ -196,7 +174,7 @@ void TSys::Sleep(uint ms) const
 	}
 }
 
-void TSys::Delay(uint us) const
+INROOT void TSys::Delay(uint us) const
 {
 	// 如果延迟微秒数太大，则使用线程级睡眠
 	if(OnSleep && us >= 2000)
@@ -223,14 +201,6 @@ void TSys::Delay(uint us) const
 }
 #endif
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
-
 /****************系统日志****************/
 #include <stdarg.h>
 
diff --git a/Kernel/Sys.h b/Kernel/Sys.h
index 3c457dee..9a3214ca 100644
--- a/Kernel/Sys.h
+++ b/Kernel/Sys.h
@@ -44,6 +44,13 @@ void assert_failed2(cstring msg, cstring file, unsigned int line);
 
 #endif
 
+// 关键性代码放到开头
+#if !defined(TINY)
+	#define INROOT __attribute__((section(".InRoot")))
+#else
+	#define INROOT
+#endif
+
 #if defined(BOOT) || defined(APP)
 struct HandlerRemap
 {
diff --git a/Kernel/Task.cpp b/Kernel/Task.cpp
index 012c3f3d..b0ea1297 100644
--- a/Kernel/Task.cpp
+++ b/Kernel/Task.cpp
@@ -36,15 +36,8 @@ void Task::Init()
 	MaxDeepth	= 1;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
-bool Task::Execute(UInt64 now)
+// 关键性代码，放到开头
+INROOT bool Task::Execute(UInt64 now)
 {
 	TS(Name);
 
@@ -92,7 +85,7 @@ bool Task::Execute(UInt64 now)
 }
 
 // 设置任务的开关状态，同时运行指定任务最近一次调度的时间，0表示马上调度
-void Task::Set(bool enable, int msNextTime)
+INROOT void Task::Set(bool enable, int msNextTime)
 {
 	Enable	= enable;
 
@@ -103,7 +96,7 @@ void Task::Set(bool enable, int msNextTime)
 	if(enable) Scheduler()->SkipSleep();
 }
 
-bool Task::CheckTime(UInt64 end, bool isSleep)
+INROOT bool Task::CheckTime(UInt64 end, bool isSleep)
 {
 	if(Deepth >= MaxDeepth) return false;
 
@@ -136,24 +129,16 @@ TaskScheduler* Task::Scheduler()
 	return &_sc;
 }
 
-Task* Task::Get(int taskid)
+INROOT Task* Task::Get(int taskid)
 {
 	return (*Scheduler())[taskid];
 }
 
-Task& Task::Current()
+INROOT Task& Task::Current()
 {
 	return *(Scheduler()->Current);
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
-
 // 显示状态
 void Task::ShowStatus()
 {
@@ -319,16 +304,9 @@ void TaskScheduler::Stop()
 	Running = false;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
+// 关键性代码，放到开头
 // 执行一次循环。指定最大可用时间
-void TaskScheduler::Execute(uint msMax, bool& cancel)
+INROOT void TaskScheduler::Execute(uint msMax, bool& cancel)
 {
 	TS("Task::Execute");
 
@@ -385,7 +363,7 @@ void TaskScheduler::Execute(uint msMax, bool& cancel)
 	_SkipSleep	= false;
 }
 
-uint TaskScheduler::ExecuteForWait(uint msMax, bool& cancel)
+INROOT uint TaskScheduler::ExecuteForWait(uint msMax, bool& cancel)
 {
 	auto& dp	= Deepth;
 	if(dp >= MaxDeepth) return 0;
@@ -418,20 +396,12 @@ uint TaskScheduler::ExecuteForWait(uint msMax, bool& cancel)
 }
 
 // 跳过最近一次睡眠，马上开始下一轮循环
-void TaskScheduler::SkipSleep()
+INROOT void TaskScheduler::SkipSleep()
 {
 	_SkipSleep	= true;
 	Sleeping	= false;
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
-
 // 显示状态
 void TaskScheduler::ShowStatus()
 {
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index d901f07b..b94aeb41 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -23,10 +23,6 @@
 	#define STACK_SAVE_Size (8 << 2)	// 0x20 = 32
 #endif
 
-#if !defined(TINY) && defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
-
 Thread::Thread(Action callback, void* state, uint stackSize)
 {
 	SmartIRQ irq;	// 关闭全局中断
diff --git a/Kernel/Time.cpp b/Kernel/Time.cpp
index dece4326..805a875b 100644
--- a/Kernel/Time.cpp
+++ b/Kernel/Time.cpp
@@ -56,15 +56,8 @@ void TTime::SetTime(UInt64 sec)
 	if(OnSave) OnSave();
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
-void TTime::Sleep(int ms, bool* running) const
+// 关键性代码，放到开头
+INROOT void TTime::Sleep(int ms, bool* running) const
 {
     // 睡眠时间太短
     if(ms <= 0) return;
@@ -97,7 +90,7 @@ void TTime::Sleep(int ms, bool* running) const
 	}
 }
 
-void TTime::Delay(int us) const
+INROOT void TTime::Delay(int us) const
 {
     // 睡眠时间太短
     if(us <= 0) return;
@@ -129,14 +122,6 @@ void TTime::Delay(int us) const
 	}
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code
-	#elif defined(__GNUC__)
-		__attribute__((section("")))
-	#endif
-#endif
-
 extern "C"
 {
 	// 获取系统启动后经过的毫秒数
diff --git a/Platform/CortexM/Interrupt.cpp b/Platform/CortexM/Interrupt.cpp
index d6afe3bd..4df4b4bf 100644
--- a/Platform/CortexM/Interrupt.cpp
+++ b/Platform/CortexM/Interrupt.cpp
@@ -50,9 +50,8 @@ void TInterrupt::GlobalEnable()	{ __enable_irq(); }
 void TInterrupt::GlobalDisable(){ __disable_irq(); }
 bool TInterrupt::GlobalState()	{ return __get_PRIMASK(); }
 
-#if !defined(TINY) && defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
+// 关键性代码，放到开头
+INROOT
 
 #if defined ( __CC_ARM   )
 __ASM uint GetIPSR()
diff --git a/Platform/CortexM/Runtime.cpp b/Platform/CortexM/Runtime.cpp
index 17299992..4baa05dc 100644
--- a/Platform/CortexM/Runtime.cpp
+++ b/Platform/CortexM/Runtime.cpp
@@ -12,19 +12,14 @@
 	#define mem_printf(format, ...)
 #endif
 
-#if !defined(TINY) && defined(STM32F0)
-	#if defined(__CC_ARM)
-		#pragma arm section code = "SectionForSys"
-	#elif defined(__GNUC__)
-		__attribute__((section("SectionForSys")))
-	#endif
-#endif
-
+#pragma arm section rwdata = ".InRoot"
 // 全局堆
 Heap* _Heap	= nullptr;
 
+// 关键性代码，放到开头
+
 extern "C" {
-	void* malloc(uint size)
+	INROOT void* malloc(uint size)
 	{
 		// 初始化全局堆
 		if(!_Heap)
@@ -52,7 +47,7 @@ extern "C" {
 		return p;
 	}
 
-	void free(void* p)
+	INROOT void free(void* p)
 	{
 	#if MEM_DEBUG
 		byte* bs = (byte*)p;
@@ -66,7 +61,7 @@ extern "C" {
 	}
 }
 
-void* operator new(uint size)
+INROOT void* operator new(uint size)
 {
     mem_printf(" new size: %d ", size);
 
@@ -89,7 +84,7 @@ void* operator new(uint size)
     return p;
 }
 
-void* operator new[](uint size)
+INROOT void* operator new[](uint size)
 {
     mem_printf(" new size[]: %d ", size);
 	// 内存大小向4字节对齐
@@ -111,7 +106,7 @@ void* operator new[](uint size)
 	return p;
 }
 
-void operator delete(void* p) noexcept
+INROOT void operator delete(void* p) noexcept
 {
 	mem_printf(" delete 0x%p ", p);
     if(p)
@@ -121,7 +116,7 @@ void operator delete(void* p) noexcept
 	}
 }
 
-void operator delete[](void* p) noexcept
+INROOT void operator delete[](void* p) noexcept
 {
 	mem_printf(" delete[] 0x%p ", p);
     if(p)
@@ -131,8 +126,8 @@ void operator delete[](void* p) noexcept
 	}
 }
 
-void operator delete(void* p, uint size) noexcept	{ operator delete(p); }
-void operator delete[](void* p, uint size) noexcept	{ operator delete[](p); }
+INROOT void operator delete(void* p, uint size) noexcept	{ operator delete(p); }
+INROOT void operator delete[](void* p, uint size) noexcept	{ operator delete[](p); }
 
 void assert_failed2(cstring msg, cstring file, unsigned int line)
 {
diff --git a/Platform/CortexM/SerialPort.cpp b/Platform/CortexM/SerialPort.cpp
index bc9c5c41..c91a2e66 100644
--- a/Platform/CortexM/SerialPort.cpp
+++ b/Platform/CortexM/SerialPort.cpp
@@ -135,11 +135,8 @@ void SerialPort::OnWrite2()
 	USART_ITConfig((USART_TypeDef*)State, USART_IT_TXE, ENABLE);
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
-
-void SerialPort::OnTxHandler()
+// 关键性代码，放到开头
+INROOT void SerialPort::OnTxHandler()
 {
 	if(!Tx.Empty())
 		USART_SendData((USART_TypeDef*)State, (ushort)Tx.Dequeue());
@@ -151,7 +148,7 @@ void SerialPort::OnTxHandler()
 	}
 }
 
-void SerialPort::OnRxHandler()
+INROOT void SerialPort::OnRxHandler()
 {
 	// 串口接收中断必须以极快的速度完成，否则会出现丢数据的情况
 	// 判断缓冲区足够最小值以后才唤醒任务，减少时间消耗
@@ -169,7 +166,7 @@ void SerialPort::OnRxHandler()
 }
 
 // 真正的串口中断函数
-void SerialPort::OnHandler(ushort num, void* param)
+INROOT void SerialPort::OnHandler(ushort num, void* param)
 {
 	auto sp	= (SerialPort*)param;
 	auto st	= (USART_TypeDef*)sp->State;
@@ -192,5 +189,3 @@ void SerialPort::OnHandler(ushort num, void* param)
 	if(USART_GetFlagStatus(st, USART_FLAG_FE) != RESET) USART_ClearFlag(st, USART_FLAG_FE);
 	if(USART_GetFlagStatus(st, USART_FLAG_PE) != RESET) USART_ClearFlag(st, USART_FLAG_PE);*/
 }
-
-#pragma arm section code
diff --git a/Platform/CortexM/Sys.cpp b/Platform/CortexM/Sys.cpp
index 6e669abb..d892cac4 100644
--- a/Platform/CortexM/Sys.cpp
+++ b/Platform/CortexM/Sys.cpp
@@ -47,11 +47,8 @@ static int _Index;	// MCU在型号表中的索引
 
 #endif
 
-#if !defined(TINY) && defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
-
-_force_inline void InitHeapStack(uint top)
+// 关键性代码，放到开头
+INROOT _force_inline void InitHeapStack(uint top)
 {
 	uint* p = (uint*)__get_MSP();
 
@@ -66,7 +63,7 @@ _force_inline void InitHeapStack(uint top)
 }
 
 // 获取JTAG编号，ST是0x041，GD是0x7A3
-uint16_t Get_JTAG_ID()
+INROOT uint16_t Get_JTAG_ID()
 {
     if( *( uint8_t *)( 0xE00FFFE8 ) & 0x08 )
     {
@@ -77,7 +74,7 @@ uint16_t Get_JTAG_ID()
     return  0;
 }
 
-void TSys::OnInit()
+INROOT void TSys::OnInit()
 {
 #ifdef STM32F0
     Clock = 48000000;
@@ -147,8 +144,6 @@ void TSys::OnInit()
 #endif
 }
 
-#pragma arm section code
-
 void TSys::InitClock()
 {
 #ifndef TINY
@@ -185,17 +180,12 @@ void TSys::SetStackTop(uint addr)
 	__set_MSP(addr);
 }
 
-#if !defined(TINY) && defined(STM32F0) && defined(DEBUG)
-	#pragma arm section code = "SectionForSys"
-#endif
-
-bool TSys::CheckMemory() const
+// 关键性代码，放到开头
+INROOT bool TSys::CheckMemory() const
 {
 	return true;
 }
 
-#pragma arm section code
-
 #if DEBUG
 typedef struct
 {
@@ -321,13 +311,13 @@ void TSys::OnStart()
 
 /******************************** 临界区 ********************************/
 
-void EnterCritical()	{ __disable_irq(); }
-void ExitCritical()		{ __enable_irq(); }
+INROOT void EnterCritical()	{ __disable_irq(); }
+INROOT void ExitCritical()	{ __enable_irq(); }
 
 /******************************** REV ********************************/
 
-uint	_REV(uint value)		{ return __REV(value); }
-ushort	_REV16(ushort value)	{ return __REV16(value); }
+INROOT uint	_REV(uint value)		{ return __REV(value); }
+INROOT ushort	_REV16(ushort value)	{ return __REV16(value); }
 
 /******************************** 调试日志 ********************************/
 
diff --git a/Platform/CortexM/Thread.cpp b/Platform/CortexM/Thread.cpp
index 5aab45a4..d51ccad2 100644
--- a/Platform/CortexM/Thread.cpp
+++ b/Platform/CortexM/Thread.cpp
@@ -25,11 +25,7 @@
 	#define STACK_SAVE_Size (8 << 2)	// 0x20 = 32
 #endif
 
-#if !defined(TINY) && defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
-
-void Thread::CheckStack()
+INROOT void Thread::CheckStack()
 {
 #ifdef DEBUG
 	uint p = __get_PSP();
@@ -47,7 +43,7 @@ void Thread::CheckStack()
 }
 
 // 系统线程调度开始
-void Thread::OnSchedule()
+INROOT void Thread::OnSchedule()
 {
 	// 使用双栈。每个线程有自己的栈，属于PSP，中断专用MSP
 	if(__get_CONTROL() != 2)
@@ -73,7 +69,7 @@ extern "C"
 	extern uint* newStack;	// 新的线程栈
 
 #ifdef STM32F0
-	__asm void PendSV_Handler()
+	INROOT __asm void PendSV_Handler()
 	{
 		IMPORT curStack
 		IMPORT newStack
@@ -123,7 +119,7 @@ PendSV_NoSave						// 此时整个上下文已经被保存
 		BX      LR                  // 中断返回将恢复上下文
 	}
 #else
-	__asm void PendSV_Handler()
+	INROOT __asm void PendSV_Handler()
 	{
 		IMPORT curStack
 		IMPORT newStack
@@ -167,25 +163,25 @@ PendSV_NoSave						// 此时整个上下文已经被保存
 #endif
 
 // 切换线程，马上切换时间片给下一个线程
-bool Thread::CheckPend()
+INROOT bool Thread::CheckPend()
 {
 	// 如果有挂起的切换，则不再切换。否则切换时需要保存的栈会出错
 	return SCB->ICSR & SCB_ICSR_PENDSVSET_Msk;
 }
 
-void Thread::OnSwitch()
+INROOT void Thread::OnSwitch()
 {
 	// 触发PendSV异常，引发上下文切换
 	SCB->ICSR |= SCB_ICSR_PENDSVSET_Msk;
 }
 
-void Thread::OnInit()
+INROOT void Thread::OnInit()
 {
     Interrupt.SetPriority(PendSV_IRQn, 0xFF);
 }
 
 // 每个线程结束时执行该方法，销毁线程
-void Thread::OnEnd()
+INROOT void Thread::OnEnd()
 {
 	//SmartIRQ irq;	// 关闭全局中断，确保销毁成功
 	__disable_irq();
diff --git a/Platform/CortexM/Time.cpp b/Platform/CortexM/Time.cpp
index bb6e788d..e88d23cf 100644
--- a/Platform/CortexM/Time.cpp
+++ b/Platform/CortexM/Time.cpp
@@ -89,14 +89,11 @@ void TTime::Init()
 	TIM_Cmd(tim, ENABLE);
 }
 
-#if !defined(TINY) && defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
-
 #if  defined(STM32F0) || defined(GD32F150) || defined(STM32F4)
     #define SysTick_CTRL_COUNTFLAG SysTick_CTRL_COUNTFLAG_Msk
 #endif
-void TTime::OnHandler(ushort num, void* param)
+// 关键性代码，放到开头
+INROOT void TTime::OnHandler(ushort num, void* param)
 {
 	auto timer = (TIM_TypeDef*)param;
 	if(!timer) return;
@@ -119,13 +116,13 @@ void TTime::OnHandler(ushort num, void* param)
 }
 
 // 当前滴答时钟
-uint TTime::CurrentTicks() const
+INROOT uint TTime::CurrentTicks() const
 {
 	return SysTick->LOAD - SysTick->VAL;
 }
 
 // 当前毫秒数
-UInt64 TTime::Current() const
+INROOT UInt64 TTime::Current() const
 {
 	uint cnt = g_Timers[Index]->CNT;
 #if ! (defined(STM32F0) || defined(GD32F150))
@@ -134,7 +131,5 @@ UInt64 TTime::Current() const
 	return Milliseconds + cnt;
 }
 
-uint TTime::TicksToUs(uint ticks) const	{ return !ticks ? 0 : (ticks / gTicks); }
-uint TTime::UsToTicks(uint us) const	{ return !us ? 0 : (us * gTicks); }
-
-#pragma arm section code
+INROOT uint TTime::TicksToUs(uint ticks) const	{ return !ticks ? 0 : (ticks / gTicks); }
+INROOT uint TTime::UsToTicks(uint us) const	{ return !us ? 0 : (us * gTicks); }
diff --git a/Platform/GD32F1x0/Interrupt.cpp b/Platform/GD32F1x0/Interrupt.cpp
index 2633c17b..b19e89c8 100644
--- a/Platform/GD32F1x0/Interrupt.cpp
+++ b/Platform/GD32F1x0/Interrupt.cpp
@@ -31,9 +31,6 @@ void TInterrupt::OnInit() const
 }
 
 #if !defined(TINY)
-#if defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
 
 extern "C"
 {
diff --git a/Platform/STM32F0/Interrupt.cpp b/Platform/STM32F0/Interrupt.cpp
index fe4ca38b..1eca17e9 100644
--- a/Platform/STM32F0/Interrupt.cpp
+++ b/Platform/STM32F0/Interrupt.cpp
@@ -71,9 +71,6 @@ void TInterrupt::DecodePriority (uint priority, uint priorityGroup, uint* pPreem
 #endif
 
 #if !defined(TINY)
-#if defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
 
 extern "C"
 {
diff --git a/Platform/STM32F1/Interrupt.cpp b/Platform/STM32F1/Interrupt.cpp
index e5365f48..7c4572fe 100644
--- a/Platform/STM32F1/Interrupt.cpp
+++ b/Platform/STM32F1/Interrupt.cpp
@@ -71,9 +71,6 @@ void TInterrupt::DecodePriority (uint priority, uint priorityGroup, uint* pPreem
 #endif
 
 #if !defined(TINY)
-#if defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
 
 extern "C"
 {
diff --git a/Platform/STM32F4/Interrupt.cpp b/Platform/STM32F4/Interrupt.cpp
index e5365f48..7c4572fe 100644
--- a/Platform/STM32F4/Interrupt.cpp
+++ b/Platform/STM32F4/Interrupt.cpp
@@ -71,9 +71,6 @@ void TInterrupt::DecodePriority (uint priority, uint priorityGroup, uint* pPreem
 #endif
 
 #if !defined(TINY)
-#if defined(STM32F0)
-	#pragma arm section code = "SectionForSys"
-#endif
 
 extern "C"
 {