xv6-cs450/vectors.pl
2006-09-06 17:50:20 +00:00

28 lines
712 B
Perl
Executable file

#!/usr/bin/perl -w
# Generate vectors.S, the trap/interrupt entry points.
# There has to be one entry point per interrupt number
# since otherwise there's no way for trap() to discover
# the interrupt number.
print "# generated by vectors.pl - do not edit\n";
print "# handlers\n";
print ".text\n";
print ".globl alltraps\n";
for(my $i = 0; $i < 256; $i++){
print ".globl vector$i\n";
print "vector$i:\n";
if(($i < 8 || $i > 14) && $i != 17){
print " pushl \$0\n";
}
print " pushl \$$i\n";
print " jmp alltraps\n";
}
print "\n# vector table\n";
print ".data\n";
print ".globl vectors\n";
print "vectors:\n";
for(my $i = 0; $i < 256; $i++){
print " .long vector$i\n";
}