在keil中ARMCC v6 编译器中用C语言实现ARM cortex-M4 实现startup代码

7个月前更新
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#include "stdint.h"

#define Stack_Size 0x00000800U
#define Heap_Size 0x00000400U

uint8_t Stack_Mem[Stack_Size] __attribute__ ((section ("STACK")));
uint32_t* const __initial_sp = (uint32_t*)&Stack_Mem[Stack_Size];


uint8_t Heap_Mem[Heap_Size] __attribute__ ((section ("HEAP")));

uint32_t* const __heap_base = (uint32_t*)&Heap_Mem[0];
uint32_t* const __heap_limit = (uint32_t*)&Heap_Mem[Stack_Size];



extern void NMI_Handler(void) __attribute__((weak));
extern void HardFault_Handler(void) __attribute__((weak));
extern void MemManage_Handler(void) __attribute__((weak));
extern void BusFault_Handler(void) __attribute__((weak));
extern void UsageFault_Handler(void) __attribute__((weak));
extern void SVC_Handler(void) __attribute__((weak));
extern void DebugMon_Handler(void) __attribute__((weak));
extern void PendSV_Handler(void) __attribute__((weak));
extern void SysTick_Handler(void) __attribute__((weak));
extern void WWDGT_IRQHandler(void) __attribute__((weak));
extern void LVD_IRQHandler(void) __attribute__((weak));
extern void RTC_IRQHandler(void) __attribute__((weak));
extern void FMC_IRQHandler(void) __attribute__((weak));
extern void RCU_IRQHandler(void) __attribute__((weak));
extern void EXTI0_IRQHandler(void) __attribute__((weak));
extern void EXTI1_IRQHandler(void) __attribute__((weak));
extern void EXTI2_IRQHandler(void) __attribute__((weak));
extern void EXTI3_IRQHandler(void) __attribute__((weak));
extern void EXTI4_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel0_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel1_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel2_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel3_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel4_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel5_IRQHandler(void) __attribute__((weak));
extern void DMA0_Channel6_IRQHandler(void) __attribute__((weak));
extern void ADC0_1_IRQHandler(void) __attribute__((weak));
extern void CAN0_Message_IRQHandler(void) __attribute__((weak));
extern void CAN0_Busoff_IRQHandler(void) __attribute__((weak));
extern void CAN0_Error_IRQHandler(void) __attribute__((weak));
extern void CAN0_FastError_IRQHandler(void) __attribute__((weak));
extern void CAN0_TEC_IRQHandler(void) __attribute__((weak));
extern void CAN0_REC_IRQHandler(void) __attribute__((weak));
extern void CAN0_WKUP_IRQHandler(void) __attribute__((weak));
extern void TIMER0_BRK_UP_TRG_CMT_IRQHandler(void) __attribute__((weak));
extern void TIMER0_Channel_IRQHandler(void) __attribute__((weak));
extern void TIMER1_IRQHandler(void) __attribute__((weak));
extern void TIMER19_BRK_UP_TRG_CMT_IRQHandler(void) __attribute__((weak));
extern void TIMER19_Channel_IRQHandler(void) __attribute__((weak));
extern void I2C0_EV_IRQHandler(void) __attribute__((weak));
extern void I2C0_ER_IRQHandler(void) __attribute__((weak));
extern void I2C1_EV_IRQHandler(void) __attribute__((weak));
extern void I2C1_ER_IRQHandler(void) __attribute__((weak));
extern void SPI0_IRQHandler(void) __attribute__((weak));
extern void SPI1_IRQHandler(void) __attribute__((weak));
extern void USART0_IRQHandler(void) __attribute__((weak));
extern void USART1_IRQHandler(void) __attribute__((weak));
extern void USART2_IRQHandler(void) __attribute__((weak));
extern void EXTI10_15_IRQHandler(void) __attribute__((weak));
extern void EXTI5_9_IRQHandler(void) __attribute__((weak));
extern void TAMPER_IRQHandler(void) __attribute__((weak));
extern void TIMER20_BRK_UP_TRG_CMT_IRQHandler(void) __attribute__((weak));
extern void TIMER20_Channel_IRQHandler(void) __attribute__((weak));
extern void TIMER7_BRK_UP_TRG_CMT_IRQHandler(void) __attribute__((weak));
extern void TIMER7_Channel_IRQHandler(void) __attribute__((weak));
extern void DMAMUX_IRQHandler(void) __attribute__((weak));
extern void SRAMC_ECCSE_IRQHandler(void) __attribute__((weak));
extern void CMP_IRQHandler(void) __attribute__((weak));
extern void OVD_IRQHandler(void) __attribute__((weak));
extern void TIMER5_DAC_IRQHandler(void) __attribute__((weak));
extern void TIMER6_IRQHandler(void) __attribute__((weak));
extern void DMA1_Channel0_IRQHandler(void) __attribute__((weak));
extern void DMA1_Channel1_IRQHandler(void) __attribute__((weak));
extern void DMA1_Channel2_IRQHandler(void) __attribute__((weak));
extern void DMA1_Channel3_IRQHandler(void) __attribute__((weak));
extern void DMA1_Channel4_IRQHandler(void) __attribute__((weak));
extern void CAN1_WKUP_IRQHandler(void) __attribute__((weak));
extern void CAN1_Message_IRQHandler(void) __attribute__((weak));
extern void CAN1_Busoff_IRQHandler(void) __attribute__((weak));
extern void CAN1_Error_IRQHandler(void) __attribute__((weak));
extern void CAN1_FastError_IRQHandler(void) __attribute__((weak));
extern void CAN1_TEC_IRQHandler(void) __attribute__((weak));
extern void CAN1_REC_IRQHandler(void) __attribute__((weak));
extern void FPU_IRQHandler(void) __attribute__((weak));
extern void MFCOM_IRQHandler(void) __attribute__((weak));

extern void __main(void);
extern void SystemInit(void);

extern void __user_initial_stackheap(
uint32_t **pHeap_Mem,
uint32_t **pStack_Mem_end ,
uint32_t **pHeap_Mem_end,
uint32_t **pStack_Mem);

#define REG_SRAM_DENSITY 0x1FFFF7E0U
#define SRAM_DENSITY_MASK 0xFFFF0000U
#define SRAM_START_ADDR 0x20000000U
//#define SRAM_FILL_VALUE 0x00000000U
#define SRAM_FILL_VALUE 0xAAAAAAAAU

//must optimize level using -O1
__attribute__((noreturn)) void Reset_Handler(void)
{
register uint32_t * pRAMSize = (uint32_t *)REG_SRAM_DENSITY;
register uint32_t RAMSize = (*pRAMSize)&SRAM_DENSITY_MASK;
RAMSize = RAMSize>>16U;
RAMSize = RAMSize<<10U;

register uint32_t* PtrRAM = (uint32_t*)SRAM_START_ADDR;
do
{
*PtrRAM++ = SRAM_FILL_VALUE;
RAMSize-=4;
}
while(RAMSize>0);
SystemInit();
__main();
}


typedef void (*pFunc)(void) ;
const pFunc __Vectors[] __attribute__ ((section ("RESET"))) =
{
(pFunc)__initial_sp, // Top of Stack
Reset_Handler ,// Reset Handler
NMI_Handler ,// NMI Handler
HardFault_Handler ,// Hard Fault Handler
MemManage_Handler ,// MPU Fault Handler
BusFault_Handler ,// Bus Fault Handler
UsageFault_Handler ,// Usage Fault Handler
0 ,// Reserved
0 ,// Reserved
0 ,// Reserved
0 ,// Reserved
SVC_Handler ,// SVCall Handler
DebugMon_Handler ,// Debug Monitor Handler
0 ,// Reserved
PendSV_Handler ,// PendSV Handler
SysTick_Handler ,// SysTick Handler

/* external interrupts handler */
WWDGT_IRQHandler ,// 16:Window Watchdog Timer
LVD_IRQHandler ,// 17:LVD through EXTI Line detect
0 ,// 18:Reserved
RTC_IRQHandler ,// 19:RTC
FMC_IRQHandler ,// 20:FMC
RCU_IRQHandler ,// 21:RCU
EXTI0_IRQHandler ,// 22:EXTI Line 0
EXTI1_IRQHandler ,// 23:EXTI Line 1
EXTI2_IRQHandler ,// 24:EXTI Line 2
EXTI3_IRQHandler ,// 25:EXTI Line 3
EXTI4_IRQHandler ,// 26:EXTI Line 4
DMA0_Channel0_IRQHandler ,// 27:DMA0 Channel0
DMA0_Channel1_IRQHandler ,// 28:DMA0 Channel1
DMA0_Channel2_IRQHandler ,// 29:DMA0 Channel2
DMA0_Channel3_IRQHandler ,// 30:DMA0 Channel3
DMA0_Channel4_IRQHandler ,// 31:DMA0 Channel4
DMA0_Channel5_IRQHandler ,// 32:DMA0 Channel5
DMA0_Channel6_IRQHandler ,// 33:DMA0 Channel6
ADC0_1_IRQHandler ,// 34:ADC0 and ADC1
CAN0_Message_IRQHandler ,// 35:CAN0 Interrupt for message buffer
CAN0_Busoff_IRQHandler ,// 36:CAN0 Interrupt for bus off/bus off done
CAN0_Error_IRQHandler ,// 37:CAN0 Interrupt for error
CAN0_FastError_IRQHandler ,// 38:CAN0 Interrupt for error in fast transmission
CAN0_TEC_IRQHandler ,// 39:CAN0 Interrupt for transmit warning
CAN0_REC_IRQHandler ,// 40:CAN0 Interrupt for receive warning
CAN0_WKUP_IRQHandler ,// 41:CAN0 wakeup through EXTI Line detection interrupt
TIMER0_BRK_UP_TRG_CMT_IRQHandler ,// 42:TIMER0 Break Update Trigger and Commutation
TIMER0_Channel_IRQHandler ,// 43:TIMER0 Channel Capture Compare
TIMER1_IRQHandler ,// 44:TIMER1
TIMER19_BRK_UP_TRG_CMT_IRQHandler ,// 45:TIMER19 Break Update Trigger and Commutation
TIMER19_Channel_IRQHandler ,// 46:TIMER19 Channel Capture Compare
I2C0_EV_IRQHandler ,// 47:I2C0 Event
I2C0_ER_IRQHandler ,// 48:I2C0 Error
I2C1_EV_IRQHandler ,// 49:I2C1 Event
I2C1_ER_IRQHandler ,// 50:I2C1 Error
SPI0_IRQHandler ,// 51:SPI0
SPI1_IRQHandler ,// 52:SPI1
USART0_IRQHandler ,// 53:USART0
USART1_IRQHandler ,// 54:USART1
USART2_IRQHandler ,// 55:USART2
EXTI10_15_IRQHandler ,// 56:EXTI Line10-15
EXTI5_9_IRQHandler ,// 57:EXTI Line5-9
TAMPER_IRQHandler ,// 58:BKP Tamper
TIMER20_BRK_UP_TRG_CMT_IRQHandler ,// 59:TIMER20 Break Update Trigger and Commutation
TIMER20_Channel_IRQHandler ,// 60:TIMER20 Channel Capture Compare
TIMER7_BRK_UP_TRG_CMT_IRQHandler ,// 61:TIMER7 Break Update Trigger and Commutation
TIMER7_Channel_IRQHandler ,// 62:TIMER7 Channel Capture Compare
DMAMUX_IRQHandler ,// 63:DMANUX
SRAMC_ECCSE_IRQHandler ,// 64:Syscfg interrupt(sramc eccse)
CMP_IRQHandler ,// 65:CMP through EXTI Line
0 ,// 66:Reserved
OVD_IRQHandler ,// 67:OVD
0 ,// 68:Reserved
0 ,// 69:Reserved
TIMER5_DAC_IRQHandler ,// 70:TIMER5 and DAC
TIMER6_IRQHandler ,// 71:TIMER6
DMA1_Channel0_IRQHandler ,// 72:DMA1 Channel0
DMA1_Channel1_IRQHandler ,// 73:DMA1 Channel1
DMA1_Channel2_IRQHandler ,// 74:DMA1 Channel2
DMA1_Channel3_IRQHandler ,// 75:DMA1 Channel3
DMA1_Channel4_IRQHandler ,// 76:DMA1 Channel4
0 ,// 77:Reserved
CAN1_WKUP_IRQHandler ,// 78:CAN1 wakeup through EXTI Line detection interrupt
CAN1_Message_IRQHandler ,// 79:CAN1 Interrupt for message buffer
CAN1_Busoff_IRQHandler ,// 80:CAN1 Interrupt for bus off/bus off done
CAN1_Error_IRQHandler ,// 81:CAN1 Interrupt for error
CAN1_FastError_IRQHandler ,// 82:CAN1 Interrupt for error in fast transmission
CAN1_TEC_IRQHandler ,// 83:CAN1 Interrupt for transmit warning
CAN1_REC_IRQHandler ,// 84:CAN1 Interrupt for receive warning
FPU_IRQHandler ,// 85:FPU
MFCOM_IRQHandler , // 86:MFCOM
};


uint32_t* const __Vectors_End = (uint32_t*)&__Vectors[sizeof(__Vectors)/sizeof(pFunc)];
uint32_t __Vectors_Size =sizeof(__Vectors)/sizeof(pFunc);


#ifdef __MICROLIB
extern uint32_t* const __initial_sp;
extern uint32_t* const __heap_base;
extern uint32_t* const __heap_limit;
#else
/*
__attribute__((noinline)) void __user_initial_stackheap1(
uint32_t **pHeap_Mem,
uint32_t **pStack_Mem_end ,
uint32_t **pHeap_Mem_end,
uint32_t **pStack_Mem)
{
*pHeap_Mem = (uint32_t *) &Heap_Mem[0];
*pStack_Mem_end = (uint32_t *)((uint8_t*)&Stack_Mem[0]+ Stack_Size);
*pHeap_Mem_end = (uint32_t *)((uint8_t*)&Heap_Mem[0]+ Heap_Size);
*pStack_Mem = (uint32_t *)&Stack_Mem[0];
}
*/

__attribute__((naked)) void __user_initial_stackheap(
uint32_t **pHeap_Mem,
uint32_t **pStack_Mem_end ,
uint32_t **pHeap_Mem_end,
uint32_t **pStack_Mem)
{
// __ASM volatile ("MSR msp, %0" : : "r" (topOfMainStack) : );
__asm volatile ("MOV r0,%0" :: "r" (&Heap_Mem[0]));
__asm volatile ("MOV r1,%0" :: "r" ((uint8_t*)&Stack_Mem[0]+ Stack_Size));
__asm volatile ("MOV r2,%0" :: "r" ((uint8_t*)&Heap_Mem[0]+ Heap_Size));
__asm volatile ("MOV r3,%0" :: "r" (&Stack_Mem[0]));
}

#endif
来源链接：https://www.cnblogs.com/CChild/p/18666940
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