1.hardware
1.1.The ARM architecture is a Reduced Instruction Set Computer (RISC) architecture with the following RISC architecture features:
• A large uniform register file.
• A load/store architecture, where data-processing operations only operate on register contents,not directly on memory contents.
• Simple addressing modes, with all load/store addresses determined from register contents and instruction
fields only.
Byte8 bits. Halfword
16 bits.
Word
32 bits.
Doubleword
64 bits.
Quadword 128 bits.
1.2.D1.21.1 Implication of Exception levels implemented[1]
armv8的excepiton level: EL0,EL1,EL2,EL3与armv7的其中工作模式:usr,FIQ,IRQ,svc,abt,sys,und的区别?
1.对于ARM架构,主要3部分:CPU,RAM,FLASH;
如何保存恢复寄存器,保存恢复堆栈;
TCB任务控制块,保存进程下上文;
2.arm是哈佛结构还是冯诺依曼结构?
[1]ARM®Architecture Reference Manual ARMv8, for ARMv8-A architecture profile Beta
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