深入理解计算机系统 CSAPP 家庭作业7.12

A:refptr = (unsigned)(ADDR(r.symbol) + r.addend - refaddr) = 0x4004f8 + (-4) - 0x4004ea = 0xa

B:refaddr = 0x4004d0 + 0xa = 0x4004da
refptr = 0x400500 + (-4) - 0x4004da =0x22

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