mem.s

arm——启动代码

ldr r0,=0x90FFFF83
        ldr r1,=0x3ff0000   /*SYSCFG*/
      str r0, [r1]
        LDR     r0, =MEM        /*  r0 = pointer to source block */
        LDR     r1, =0x3ff3010   /*  r1 = 特殊寄存器 的首地址*/
        STMFD   sp!, {r4-r11}   /*  save some working registers */

        LDMIA   r0!, {r4-r11}   /*  load 8 words from the source */
        STMIA   r1!, {r4-r11}   /*  and put them at the destination */
        LDMFD   sp!, {r4-r11}   /*   restore originals */
     
MEM: .long 0x83ffff96,0x3e,0x18860030,0x00400010,0x00801010
     .long  0xfaffff0f,0x60000412,0x40800414,0x40000516,0x20800518,0x4000061a,0x4080061c,0x80030004,0x80010108,0x8001020c,0x80010310,0x608327ce
别忘了更改PC，否则还是一塌糊涂，留点难度希望到www.winsilicon.com的bbs浏览一下