47 lines
989 B
Perl
Executable file
47 lines
989 B
Perl
Executable file
#!/usr/bin/perl -w
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# Generate vectors.S, the trap/interrupt entry points.
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# There has to be one entry point per interrupt number
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# since otherwise there's no way for trap() to discover
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# the interrupt number.
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print "# generated by vectors.pl - do not edit\n";
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print "# handlers\n";
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print ".globl alltraps\n";
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for(my $i = 0; $i < 256; $i++){
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print ".globl vector$i\n";
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print "vector$i:\n";
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if(!($i == 8 || ($i >= 10 && $i <= 14) || $i == 17)){
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print " pushl \$0\n";
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}
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print " pushl \$$i\n";
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print " jmp alltraps\n";
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}
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print "\n# vector table\n";
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print ".data\n";
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print ".globl vectors\n";
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print "vectors:\n";
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for(my $i = 0; $i < 256; $i++){
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print " .long vector$i\n";
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}
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# sample output:
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# # handlers
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# .globl alltraps
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# .globl vector0
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# vector0:
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# pushl $0
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# pushl $0
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# jmp alltraps
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# ...
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#
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# # vector table
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# .data
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# .globl vectors
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# vectors:
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# .long vector0
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# .long vector1
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# .long vector2
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# ...
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