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.section .stack, "aw"
.stack_size = 0x200
.stack_space: .space .stack_size
.section .heap, "aw"
.heap_size = 0x200
.heap_space: .space .heap_size
.section .vectors, "a"
.global __Vectors
.global __Vectors_End
.global __Vectors_Size
.type __Vectors, %function
__Vectors:
.word .stack_space + .stack_size // Stack Pointer
.word Reset_Handler // Reset
.word NMI_Handler // NMI
.word HardFault_Handler // Hard Fault
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word 0 // Reserved
.word SVC_Handler // SVCall
.word 0 // Reserved
.word 0 // Reserved
.word PendSV_Handler // PendSV
.word SysTick_Handler // SysTick
// 中断处理函数
.word IRQ000_Handler
.word IRQ001_Handler
.word IRQ002_Handler
.word IRQ003_Handler
.word IRQ004_Handler
.word IRQ005_Handler
.word IRQ006_Handler
.word IRQ007_Handler
.word IRQ008_Handler
.word IRQ009_Handler
.word IRQ010_Handler
.word IRQ011_Handler
.word IRQ012_Handler
.word IRQ013_Handler
.word IRQ014_Handler
.word IRQ015_Handler
.word IRQ016_Handler
.word IRQ017_Handler
.word IRQ018_Handler
.word IRQ019_Handler
.word IRQ020_Handler
.word IRQ021_Handler
.word IRQ022_Handler
.word IRQ023_Handler
.word IRQ024_Handler
.word IRQ025_Handler
.word IRQ026_Handler
.word IRQ027_Handler
.word IRQ028_Handler
.word IRQ029_Handler
.word IRQ030_Handler
.word IRQ031_Handler
.global __Vectors_End
__Vectors_End:
.global __Vectors_Size
__Vectors_Size = __Vectors_End - __Vectors
.section .text
.global Reset_Handler
.type Reset_Handler, %function
Reset_Handler:
// 重置处理
ldr r0, =0xE000ED08
ldr r1, =.stack_space
str r1, [r0] // 设置堆栈指针
bl SystemInit // 调用系统初始化
bl entry // 调用主函数
b . // 无限循环
// 异常处理程序
.type NMI_Handler, %function
NMI_Handler:
b .
.type HardFault_Handler, %function
HardFault_Handler:
b .
.type SVC_Handler, %function
SVC_Handler:
b .
.type PendSV_Handler, %function
PendSV_Handler:
b .
.type SysTick_Handler, %function
SysTick_Handler:
b .
.type Default_Handler, %function
Default_Handler:
b .
// 中断处理函数的默认实现
.weak IRQ000_Handler
.thumb_set IRQ000_Handler, Default_Handler
.weak IRQ001_Handler
.thumb_set IRQ001_Handler, Default_Handler
.weak IRQ002_Handler
.thumb_set IRQ002_Handler, Default_Handler
.weak IRQ003_Handler
.thumb_set IRQ003_Handler, Default_Handler
.weak IRQ004_Handler
.thumb_set IRQ004_Handler, Default_Handler
.weak IRQ005_Handler
.thumb_set IRQ005_Handler, Default_Handler
.weak IRQ006_Handler
.thumb_set IRQ006_Handler, Default_Handler
.weak IRQ007_Handler
.thumb_set IRQ007_Handler, Default_Handler
.weak IRQ008_Handler
.thumb_set IRQ008_Handler, Default_Handler
.weak IRQ009_Handler
.thumb_set IRQ009_Handler, Default_Handler
.weak IRQ010_Handler
.thumb_set IRQ010_Handler, Default_Handler
.weak IRQ011_Handler
.thumb_set IRQ011_Handler, Default_Handler
.weak IRQ012_Handler
.thumb_set IRQ012_Handler, Default_Handler
.weak IRQ013_Handler
.thumb_set IRQ013_Handler, Default_Handler
.weak IRQ014_Handler
.thumb_set IRQ014_Handler, Default_Handler
.weak IRQ015_Handler
.thumb_set IRQ015_Handler, Default_Handler
.weak IRQ016_Handler
.thumb_set IRQ016_Handler, Default_Handler
.weak IRQ017_Handler
.thumb_set IRQ017_Handler, Default_Handler
.weak IRQ018_Handler
.thumb_set IRQ018_Handler, Default_Handler
.weak IRQ019_Handler
.thumb_set IRQ019_Handler, Default_Handler
.weak IRQ020_Handler
.thumb_set IRQ020_Handler, Default_Handler
.weak IRQ021_Handler
.thumb_set IRQ021_Handler, Default_Handler
.weak IRQ022_Handler
.thumb_set IRQ022_Handler, Default_Handler
.weak IRQ023_Handler
.thumb_set IRQ023_Handler, Default_Handler
.weak IRQ024_Handler
.thumb_set IRQ024_Handler, Default_Handler
.weak IRQ025_Handler
.thumb_set IRQ025_Handler, Default_Handler
.weak IRQ026_Handler
.thumb_set IRQ026_Handler, Default_Handler
.weak IRQ027_Handler
.thumb_set IRQ027_Handler, Default_Handler
.weak IRQ028_Handler
.thumb_set IRQ028_Handler, Default_Handler
.weak IRQ029_Handler
.thumb_set IRQ029_Handler, Default_Handler
.weak IRQ030_Handler
.thumb_set IRQ030_Handler, Default_Handler
.weak IRQ031_Handler
.thumb_set IRQ031_Handler, Default_Handler
.end
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