.extern main
.global _start
.extern __end_data
b _start
.equ ImageSize,__end_data-0x0AFE0100
.long ImageSize
_start:
ldr r1,=StackInit
ldr sp,[r1]
and sp, sp, #0xFFFFFFFC // to ensure sp not be odd
b main
.equ StackInitValue, __end_data+0x1000 // 4K
StackInit:
.long StackInitValue
.global JumpToKernel
JumpToKernel:
mov pc, r0
.global JumpToKernel0x
JumpToKernel0x:
mov r8, r0
mov r0, r1
mov r1, r2
mov r2, r3
mov r3, r4
mov pc, r8
.section ".data.boot"
.section ".bss.boot"
//**************************end*****************************//
下面是lds文件
SECTIONS { . = 0x0AFE00F8; .text : { *(.text)
*(.fixup)
*(.rodata)
*(.rodata.*) }
.data : { *(.data) }
.bss : { *(.bss) }
__end_data = .; }
为什么这里是0x0AFE00F8,而不是0x0AFE0100?flashloader跳转到0x0AFE0100开始执行.而看bin文件发现前面8个字节也确实不是ARM指令,为0x000000EAC73F0000
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