mirror of https://gitee.com/openkylin/qemu.git
102 lines
2.7 KiB
Perl
Executable File
102 lines
2.7 KiB
Perl
Executable File
#!/usr/bin/env perl
|
|
|
|
use warnings;
|
|
|
|
use File::Temp qw/ tempfile /;
|
|
use Getopt::Long;
|
|
|
|
# Default to the system objdump if a cross-compiler edition not given.
|
|
my $aobjdump = "objdump";
|
|
my $hobjdump = "";
|
|
my $tobjdump = "";
|
|
my $hmachine = "";
|
|
my $tmachine = "";
|
|
|
|
GetOptions ('O|objdump=s' => \$aobjdump,
|
|
'host-objdump=s' => \$hobjdump,
|
|
'target-objdump=s' => \$tobjdump,
|
|
'h|host-machine=s' => \$hmachine,
|
|
't|target-machine=s' => \$tmachine);
|
|
|
|
# But we can't default the machines. Sanity check that we've at least one.
|
|
die "No host or target machine type" if !$hmachine && !$tmachine;
|
|
|
|
# Reuse one temp file for all of the hunks.
|
|
my ($outh, $outname) = tempfile();
|
|
binmode($outh);
|
|
END { unlink $outname; }
|
|
|
|
# Pre-construct the command-lines for executing the dump.
|
|
sub mkobjcommand ($$) {
|
|
my ($cmd, $mach) = @_;
|
|
return 0 if !$mach;
|
|
$cmd = $aobjdump if !$cmd;
|
|
return "$cmd -m $mach --disassemble-all -b binary";
|
|
}
|
|
|
|
$objdump[1] = mkobjcommand($hobjdump, $hmachine);
|
|
$objdump[2] = mkobjcommand($tobjdump, $tmachine);
|
|
|
|
# Zero-initialize current dumping state.
|
|
my $mem = "";
|
|
my $inobjd = 0;
|
|
my $vma = 0;
|
|
|
|
sub objcommand {
|
|
my $ret = $objdump[$inobjd];
|
|
if (!$ret) {
|
|
die "Host machine type not specified" if $inobjd == 1;
|
|
die "Target machine type not specified" if $inobjd == 2;
|
|
die "Internal error";
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
while (<>) {
|
|
# Collect the data from the relevant OBJD-* lines ...
|
|
if (/^OBJD-H: /) {
|
|
die "Internal error" if $inobjd == 2;
|
|
$mem = $mem . pack("H*", substr($_, 8, -1));
|
|
$inobjd = 1;
|
|
} elsif (/^OBJD-T: /) {
|
|
die "Internal error" if $inobjd == 1;
|
|
$mem = $mem . pack("H*", substr($_, 8, -1));
|
|
$inobjd = 2;
|
|
}
|
|
# ... which will always be followed by a blank line,
|
|
# at which point we should produce our dump.
|
|
elsif ($inobjd) {
|
|
# Rewrite the temp file in one go; it will usually be small.
|
|
sysseek $outh, 0, 0;
|
|
truncate $outh, 0;
|
|
syswrite $outh, $mem;
|
|
|
|
my $cmd = objcommand();
|
|
$cmd = $cmd . " --adjust-vma=" . $vma if $vma;
|
|
$cmd = $cmd . " " . $outname;
|
|
|
|
# Pipe from objdump...
|
|
open IN, "-|", $cmd;
|
|
|
|
# ... copying all but the first 7 lines of boilerplate to our stdout.
|
|
my $i = 0;
|
|
while (<IN>) {
|
|
print if (++$i > 7);
|
|
}
|
|
close IN;
|
|
print "\n";
|
|
|
|
$mem = "";
|
|
$inobjd = 0;
|
|
$vma = 0;
|
|
}
|
|
# The line before "OBJD-*" will be of the form "0x<hex>+: +\n".
|
|
# Extract the value for passing to --adjust-vma.
|
|
elsif (/^(0x[0-9a-fA-F]+):\s*$/) {
|
|
$vma = $1;
|
|
print;
|
|
} else {
|
|
print;
|
|
}
|
|
}
|