#######
#
# E-scripts on the anatomy of compiled C programs
#
# Note 1: use the eev command (defined in eev.el) and the
# ee alias (in my .zshrc) to execute parts of this file.
# Executing this file as a whole makes no sense.
#
# Note 2: be VERY careful and make sure you understand what
# you're doing.
#
# Note 3: If you use a shell other than zsh things like |&
# and the for loops may not work.
#
# Note 4: I always run as root.
#
# Note 5: some parts are too old and don't work anymore. Some
# never worked.
#
# Note 6: the definitions for the find-xxxfile commands are on my
# .emacs.
#
# Note 7: if you see a strange command check my .zshrc -- it may
# be defined there as a function or an alias.
#
# Note 8: the sections without dates are always older than the
# sections with dates.
#
# This file is at <http://angg.twu.net/a/e/anatocc.e>
#           or at <http://angg.twu.net/e/anatocc.e.html>.
#        See also <http://angg.twu.net/emacs.html>,
#                 <http://angg.twu.net/a/.emacs[.html]>,
#                 <http://angg.twu.net/a/.zshrc[.html]>,
#                 <http://angg.twu.net/escripts.html>,
#             and <http://angg.twu.net/>.
#
#######



cd /tmp/
rm demo*

cd /tmp/
cat > demo.c <<'---'
#include <stdio.h>
main() {
  int sum, i;
  for(sum=0, i=0; i<10; ++i)
    sum += i;
  printf("Sum: %d\n", sum);
}
---
gcc -E demo.c > demo.E 
gcc -S demo.c
gcc -S demo.c -g -o demog.s
gcc -c demo.c
gcc -c demo.c -g -o demog.o
gcc    demo.c -o demo -v > ogv
gcc    demo.c -o demog -g

diff ogv ogvg



objdump?

source for crt1, etc?

dynamic linking? ldd? Linking path?

stabs?

elf?

How does the kernel reads elf files?
And files with other "magic"?