------------------------------VEC_NUM------------------------------
VEC_TYPE: undefined instruction exception ---------------------------CRITICAL REGS---------------------------
FP[0xFFFFFFF0], IP(r12)[0x846F9690], LR(r14)[0x8022BA14], CPSR[0x80100013], PC(r15)[0x8018A6F8], ESP[0x846F9690]----------------------------STACK FRAME----------------------------
The stack frame is following:
#1 0x8018A6F8(int_cpu_unlock+0x4)
#2 0x0(UNKNOWN FUNC)----------------------------THREAD INFO----------------------------
-------------------------------第二次--------------------------------------------------------------
------------------------------VEC_NUM------------------------------
VEC_TYPE: undefined instruction exception ---------------------------CRITICAL REGS---------------------------
FP[0xEE5F8DE0], IP(r12)[0x8413F674], LR(r14)[0x802F5968], CPSR[0x60000053], PC(r15)[0x8413F65C], ESP[0x8413F690]----------------------------STACK FRAME----------------------------
The stack frame is following:
#1 0x8413F65C(UNKNOWN FUNC)
#2 0x2524(UNKNOWN FUNC)
#3 0x2A0403E5(UNKNOWN FUNC)
#4 0x0(UNKNOWN FUNC)----------------------------THREAD INFO----------------------------
NAME ENTRY TID(hex) BASE SIZE CUR HIGH MARGIN
------------ ---------------- ---------------- ---------------- ----- ----- ----- ------
tNet0 802154a0 8403f000 2214852392 1048576 384 2980 1045596 -----------------------------------第三次----------------------------------------------------
File:smpcpu:0
------------------------------VEC_NUM------------------------------
VEC_TYPE: pre-fetch abort exception ---------------------------CRITICAL REGS---------------------------
FP[0x0], IP(r12)[0x0], LR(r14)[0x802F97A8], CPSR[0xA0000053], PC(r15)[0x0], ESP[0x0]----------------------------STACK FRAME----------------------------
The stack frame is following:
#1 0x801898A0(exc_handler+0x14)----------------------------THREAD INFO----------------------------
NAME ENTRY TID(hex) BASE SIZE CUR HIGH MARGIN
------------ ---------------- ---------------- ---------------- ----- ----- ----- ------
init 802f735c 846df000 2221799208 65536 -2073102320 8344 57192 -----------------------------------第四次--------------------------------------------------------------
------------------------------VEC_NUM------------------------------
VEC_TYPE: data abort exception
cpu:1------------------------------VEC_NUM------------------------------
VEC_TYPE: data abort exception
实践证明，是下载版本后出问题了：
Bytes transferred = 3066964 (2ecc54 hex)
sbcw#crc32 0x90100000 2ecc54 计算镜像校验和，每次变动。而正常的板子每次都是相同的。
crc32 for 90100000 ... 903ecc53 ==> 1463d8f6
How to use ARM's data-abort exception - Embedded.com
Of the six exceptions that an ARM-based processor can raise,
two abort exceptions signal that the current memory access cannot be successfully completed. The first one, data-abort exception, has the second-highest priority, just after reset, as shown in Figure 1. This exception conveys that the data access transaction was unsuccessful.
The second is the prefetch-abort exception, which has the second-lowest priority, just one notch above the software interrupts. This abort is invoked when the processor is unable to fetch an instruction from memory.
arm中SP，LR，PC寄存器以及其它所有寄存器介绍_biao3070698140的技术博客_51CTO博客_pc寄存器介绍
12:内部程序调用暂存寄存器，也成为ip寄存器，我不知道是干嘛的，网上解释也模棱两可。
r13:栈指针，也称为sp寄存器
r14:连接寄存器，也称为lr寄存器，程序跳转（子程序调用，中断跳转）后，arm自动在该寄存器中存入原程序（未跳转）的下一条指令的地址。
r15:程序计数器，也称为pc寄存器，保存的是当前正在取指的指令的地址（arm采用2级流水线，因此是当前正在执行指令的地址+8）。
除了上述每种模式所需寄存器外，还有6状态寄存器，最主要的就是两个CPSR和SPSR，arm进入异常模式后，SPSR自动保存进入异常前的CPSR的值，以便异常返回后恢复异常发生时的工作状态。因此主要看CPSR中的位都是什么作用：ARM中的程
VEC_TYPE: pre-fetch abort exception
---------------------------CRITICAL REGS---------------------------
FP[0x8413F590], IP(r12)[0x8413F594], LR(r14)[0x802F2924], CPSR[0x60000053], PC(r15)[0x58000360], ESP[0x8413F574] 此处红色地址为PCIE地址空间的----------------------------STACK FRAME----------------------------
The stack frame is following:
#1 0x58000360(UNKNOWN FUNC)
#2 0x801D1B68(ipnet_if_indextonetif+0x30)
#3 0x801D2578(ipnet_sys_if_indexname+0x90)
#4 0x801B4CA0(UNKNOWN FUNC)
#5 0x80202410(UNKNOWN FUNC)
#6 0x802F4694(jobQueueProcess+0x15C)
#7 0x802154BC(UNKNOWN FUNC)
#8 0x80312B00(thread_handler+0x50)
#9 0x80312AB0(thread_handler)----------------------------THREAD INFO----------------------------
