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[0xe3a01001] mov r1,#1
[0xee031f10] mcr p15,0x0,r1,c3,c0,0
[0xee02af10] mcr p15,0x0,r10,c2,c0,0
[0xee080f17] mcr p15,0x0,r0,c8,c7,0
[0xe3a01071] mov r1,#0x71
[0xe3811004] orr r1,r1,#4
[0xe59f006c] ldr r0,0x30039468 ; = #0x8c039408
[0xe3500000] cmp r0,#0
[0xee011f10] mcr p15,0x0,r1,c1,c0,0
[0xe1a0f000] mov pc,r0
[0xe1a00000] nop
[0xe3a0d323] mov r13,#0x8c000000
[0xe28dd803] add r13,r13,#0x30000
[0xea00a34b] b 0x30062144 ; (Image$$RO$$Limit + 0x30061574)
打开mmu之后
8c0393d8 [0xe59fa074] ldr r10,0x8c039454 ; = #0x30010000
8c0393dc [0xe3a01001] mov r1,#1
8c0393e0 [0xee031f10] mcr p15,0x0,r1,c3,c0,0
8c0393e4 [0xee02af10] mcr p15,0x0,r10,c2,c0,0
8c0393e8 [0xee080f17] mcr p15,0x0,r0,c8,c7,0
8c0393ec [0xe3a01071] mov r1,#0x71
8c0393f0 [0xe3811004] orr r1,r1,#4
8c0393f4 [0xe59f006c] ldr r0,0x8c039468 ; = #0x8c039408
8c0393f8 [0xe3500000] cmp r0,#0
8c0393fc [0xee011f10] mcr p15,0x0,r1,c1,c0,0
8c039400 [0xe1a0f000] mov pc,r0
8c039404 [0xe1a00000] nop
8c039408 [0xe3a0d323] mov r13,#0x8c000000
8c03940c [0xe28dd803] add r13,r13,#0x30000
8c039410 [0xea00a34b] b 0x8c062144 ; (Image$$ZI$$Limit + 0x5a071f34)
这个就是b main
跳转后内容为:
8c062144 [0xffffffff] dci 0xffffffff ; ? undefined
8c062148 [0xffffffff] dci 0xffffffff ; ? undefined
8c06214c [0xffffffff] dci 0xffffffff ; ? undefined
8c062150 [0xffffffff] dci 0xffffffff ; ? undefined
8c062154 [0xffffffff] dci 0xffffffff ; ? undefined
8c062158 [0xffffffff] dci 0xffffffff ; ? undefined
8c06215c [0xffffffff] dci 0xffffffff ; ? undefined
8c062160 [0xffffffff] dci 0xffffffff ; ? undefined
8c062164 [0xffffffff] dci 0xffffffff ; ? undefined
8c062168 [0xffffffff] dci 0xffffffff ; ? undefined
8c06216c [0xffffffff] dci 0xffffffff ; ? undefined
8c062170 [0xffffffff] dci 0xffffffff ; ? undefined
8c062174 [0xffffffff] dci 0xffffffff ; ? undefined
8c062178 [0xffffffff] dci 0xffffffff ; ? undefined
8c06217c [0xffffffff] dci 0xffffffff ; ? undefined
8c062180 [0xffffffff] dci 0xffffffff ; ? undefined
8c062184 [0xffffffff] dci 0xffffffff ; ? undefined
8c062188 [0xffffffff] dci 0xffffffff ; ? undefined
8c06218c [0xffffffff] dci 0xffffffff ; ? undefined
8c062190 [0xffffffff] dci 0xffffffff ; ? undefined
8c062194 [0xffffffff] dci 0xffffffff ; ? undefined
很奇怪啊,什么也没有
之后执行就会出现协处理器操作不能进行而报的undefined instructions
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