/ Published in: Bash
From: "Pierre A. Humblet"
The attached script takes the name of a .exe or .dll,
uses cygcheck to find the dll dependence and checks for conflicts.
This will allow you to check your favorite applications or dlls,
seeing if --enable-auto-image-base works for you.
A "conflict" is when the end of a dll overlaps the start of the next one.
A "guard conflict" includes the extra 0x10000 mentioned by Jason in this thread.
They occur with Windows dlls, not sure if that's a real issue.
I have extended the tool (attached) so that it takes a variable number
of arguments. You can check a program and all the dll's it might ever
load dynamically, or all the dll's in /bin, or whatever.
cygcheck will search the PATH if necessary.
The attached script takes the name of a .exe or .dll,
uses cygcheck to find the dll dependence and checks for conflicts.
This will allow you to check your favorite applications or dlls,
seeing if --enable-auto-image-base works for you.
A "conflict" is when the end of a dll overlaps the start of the next one.
A "guard conflict" includes the extra 0x10000 mentioned by Jason in this thread.
They occur with Windows dlls, not sure if that's a real issue.
I have extended the tool (attached) so that it takes a variable number
of arguments. You can check a program and all the dll's it might ever
load dynamically, or all the dll's in /bin, or whatever.
cygcheck will search the PATH if necessary.
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#! /bin/bash # Checks for conflicts between all dll's that are loaded by the programs or dlls given as arguments. # cygcheck searches PATH to find arguments that are not absolute pathnames. final_dec=0 final_guard_dec=0 guard=0x10000 #set -x cygcheck "$@" | while read -r file do [ -n "$file" ] && [ "$file" = "${file#Found:}" ] && objdump -p "$file" | sed -n -e '2 {s:\\:/:g; s/^/ /; s/: .*$//; h}' -e '/ImageBase/ {s/ImageBase/ /; G; h}' -e '/SizeOfImage/ {s/SizeOfImage//; G; s/[\t\n]//gp; Q}' done | sort -f -u -k 2 | while read size base name do conflict="" base_dec=$(( 0x$base )) if [ "$final_dec" -ge "$base_dec" ] then conflict="CONFLICT End: $final_dec Start:$base_dec" else [ "$final_guard_dec" -ge "$base_dec" ] && conflict="GUARD CONFLICT End: $final_dec Start:$base_dec" fi echo $name $base $size $conflict final_dec=$(( 0x$base + 0x$size )) final_guard_dec=$(( $final_dec + $guard )) done