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Akash M.
Consider the silly read function in C and X86-64: void read() { char buf[3]; gets(buf); } read: subq $0x10, %rsp movq %rsp, %rdi callq gets addq $0x10, %rsp retq a. What is the maximum length of the input string without overwriting return address? (hint: watch out for the null character) b. What would be the return address when input is: 01234567890123456789<enter> That is, assuming read() was called by read_caller(), fill in the last 8 bytes of read_caller() stack frame in the figure below. Each box should hold one byte represented in hex. Notes - ascii codes for characters 0 through 9 are 0x30 through 0x39 - assume little endian machine read_caller() stack frame Address increase (it's a stack!) Fill in this part Address increase
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