mirror of
https://github.com/DynamoRIO/dynamorio.git
synced 2026-10-12 02:02:04 +00:00
Derek Bruening
067ac649c9
Left trailing spaces and tabs in libelftc patch files, in suite/tests/api/static.template, and in suite/tests/security-win32/except-execution.templatex (complex to remove there). SVN-Revision: 2543
84 lines
3.1 KiB
Perl
Executable File
84 lines
3.1 KiB
Perl
Executable File
#!/usr/bin/perl
|
|
|
|
# **********************************************************
|
|
# Copyright (c) 2004 VMware, Inc. All rights reserved.
|
|
# **********************************************************
|
|
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
#
|
|
# * Redistributions of source code must retain the above copyright notice,
|
|
# this list of conditions and the following disclaimer.
|
|
#
|
|
# * Redistributions in binary form must reproduce the above copyright notice,
|
|
# this list of conditions and the following disclaimer in the documentation
|
|
# and/or other materials provided with the distribution.
|
|
#
|
|
# * Neither the name of VMware, Inc. nor the names of its contributors may be
|
|
# used to endorse or promote products derived from this software without
|
|
# specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
|
|
# DAMAGE.
|
|
|
|
### mangle-ret.pl
|
|
### for converting ret into jmp* in a .s file,
|
|
### to see impact of rsb on native apps (independent of DynamoRIO)
|
|
###
|
|
### author: Derek Bruening August 2002
|
|
###
|
|
|
|
$usage = "Usage: $0 <file>\n";
|
|
|
|
if ($#ARGV < 0) {
|
|
print $usage;
|
|
exit 1;
|
|
}
|
|
$file = $ARGV[0];
|
|
$file =~ /(.*)\.s$/;
|
|
if ($1 eq "") {
|
|
print "Error: input file must be .s file\n";
|
|
exit 1;
|
|
}
|
|
$out = "$1.mangle.s";
|
|
open(FILE, "< $file") || die "Error: Couldn't open $file for input\n";
|
|
open(OUT, "> $out") || die "Error: Couldn't open $out for output\n";
|
|
$rets = 0;
|
|
while (<FILE>) {
|
|
if ($_ =~ /^\s*ret\s*$/) {
|
|
$rets++;
|
|
print OUT "# ---- translation of ret -----\n";
|
|
print OUT " addl \$4,%esp\n";
|
|
print OUT " jmp *0xfffffffc(%esp)\n";
|
|
} elsif ($_ =~ /^\s*ret\s+\$([0-9a-fA-Fx]+)\s*$/) {
|
|
print "Found ret with immed operand: $_";
|
|
# extra stack space is removed after return address is popped
|
|
$rets++;
|
|
$extra = $1;
|
|
if ($extra =~ /0x([0-9a-fA-F]+)/) {
|
|
$remove = 4 + hex($1);
|
|
} else {
|
|
$remove = 4 + $extra;
|
|
}
|
|
$offs = -$remove;
|
|
print OUT "# ---- translation of ret -----\n";
|
|
print OUT " addl \$$remove,%esp\n";
|
|
printf OUT " jmp *0x%08x(%%esp)\n", $offs;
|
|
} elsif ($_ =~ /^\s*ret\s+/) {
|
|
print "Error: Found unidentified ret: $_";
|
|
} else {
|
|
print OUT $_;
|
|
}
|
|
}
|
|
close(FILE);
|
|
print "Translated $rets returns in $file to $out\n";
|