initialization routine

__libc_start_main(0x80493a0, 1, 0xbfea9f74, 0x804e4f0, 0x804e4e0

__libc_start_main is initialization routine.

stack top = main = 0x80493a0
so stack top to bottom is from left to right.

http://en.wikipedia.org/wiki/Prototype

http://refspecs.freestandards.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/baselib—libc-start-main-.html

Armstrong, Neil: One Small Step For Man
[audio: http://www.freeinfosociety.com/media/sounds/13.mp3]