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    SubjectRe: Average instruction length in x86-built kernel?
    Hi Karim,

    On Friday 29 July 2005 23:32, Karim Yaghmour wrote:
    > Googling around, I can find references claiming that the average
    > instruction length on x86 is anywhere from 2.7 to 3.5 bytes, but I
    > can't find anything studying Linux specifically.

    This is not that hard to find out yourself:

    Just study the output od objdump -d and average the differences
    of the first hex number in a line printed, which are followed by a ":"


    scripts/kconfig/mconf.o: file format elf32-i386

    Disassembly of section .text:

    00000000 <init_wsize>:
    0: 83 ec 1c sub $0x1c,%esp
    3: 8d 44 24 10 lea 0x10(%esp),%eax
    7: 89 44 24 08 mov %eax,0x8(%esp)

    so avg(3-7, 3-0) = 2.5

    and so on...

    Happy analyzing!


    Ingo Oeser

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