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Annotation of qemu/roms/ipxe/src/drivers/infiniband/qib_genbits.pl, revision 1.1.1.1

1.1       root        1: #!/usr/bin/perl -w
                      2: #
                      3: # Copyright (C) 2008 Michael Brown <[email protected]>.
                      4: #
                      5: # This program is free software; you can redistribute it and/or
                      6: # modify it under the terms of the GNU General Public License as
                      7: # published by the Free Software Foundation; either version 2 of the
                      8: # License, or any later version.
                      9: #
                     10: # This program is distributed in the hope that it will be useful, but
                     11: # WITHOUT ANY WARRANTY; without even the implied warranty of
                     12: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     13: # General Public License for more details.
                     14: #
                     15: # You should have received a copy of the GNU General Public License
                     16: # along with this program; if not, write to the Free Software
                     17: # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     18: 
                     19: use strict;
                     20: use warnings;
                     21: 
                     22: my $offsets = {};
                     23: my $defaults = {};
                     24: my $structures = {};
                     25: my $structure = "";
                     26: 
                     27: while ( <> ) {
                     28:   chomp;
                     29:   if ( /^\#define (\S+)_OFFS (\S+)$/ ) {
                     30:     $structure = $1;
                     31:     $offsets->{$structure} = $2;
                     32:   } elsif ( /^\#define ${structure}_DEF (\S+)$/ ) {
                     33:     $defaults->{$structure} = $1;
                     34:   } elsif ( /^\#define ${structure}_(\S+)_LSB (\S+)$/ ) {
                     35:     $structures->{$structure}->{$1}->{LSB} = $2;
                     36:   } elsif ( /^\#define ${structure}_(\S+)_MSB (\S+)$/ ) {
                     37:     $structures->{$structure}->{$1}->{MSB} = $2;
                     38:   } elsif ( /^\#define ${structure}_(\S+)_RMASK (\S+)$/ ) {
                     39:     $structures->{$structure}->{$1}->{RMASK} = $2;
                     40:   } elsif ( /^\s*$/ ) {
                     41:     # Do nothing
                     42:   } else {
                     43:     print "$_\n";
                     44:   }
                     45: }
                     46: 
                     47: my $data = [ map { { name => $_, offset => $offsets->{$_},
                     48:                     default => $defaults->{$_} }; }
                     49:             sort { hex ( $offsets->{$a} ) <=> hex ( $offsets->{$b} ) }
                     50:             keys %$offsets ];
                     51: 
                     52: foreach my $datum ( @$data ) {
                     53:   next unless exists $structures->{$datum->{name}};
                     54:   $structure = $structures->{$datum->{name}};
                     55:   my $fields = [ map { { name => $_, lsb => $structure->{$_}->{LSB},
                     56:                         msb => $structure->{$_}->{MSB},
                     57:                         rmask => $structure->{$_}->{RMASK} }; }
                     58:                 sort { hex ( $structure->{$a}->{LSB} ) <=>
                     59:                            hex ( $structure->{$b}->{LSB} ) }
                     60:                 keys %$structure ];
                     61:   $datum->{fields} = $fields;
                     62: }
                     63: 
                     64: print "\n/* This file has been further processed by $0 */\n\n";
                     65: print "FILE_LICENCE ( GPL2_ONLY );\n\n";
                     66: 
                     67: foreach my $datum ( @$data ) {
                     68:   printf "#define %s_offset 0x%08xUL\n",
                     69:       $datum->{name}, hex ( $datum->{offset} );
                     70:   if ( exists $datum->{fields} ) {
                     71:     my $lsb = 0;
                     72:     my $reserved_idx = 0;
                     73:     printf "struct %s_pb {\n", $datum->{name};
                     74:     foreach my $field ( @{$datum->{fields}} ) {
                     75:       my $pad_width = ( hex ( $field->{lsb} ) - $lsb );
                     76:       die "Inconsistent LSB/RMASK in $datum->{name} before $field->{name}\n"
                     77:          if $pad_width < 0;
                     78:       printf "\tpseudo_bit_t _unused_%u[%u];\n", $reserved_idx++, $pad_width
                     79:          if $pad_width;
                     80:       $lsb += $pad_width;
                     81:       # Damn Perl can't cope with 64-bit hex constants
                     82:       my $width = 0;
                     83:       die "Missing RMASK in $datum->{name}.$field->{name}\n"
                     84:          unless defined $field->{rmask};
                     85:       my $rmask = $field->{rmask};
                     86:       while ( $rmask =~ /^(0x.+)f$/i ) {
                     87:        $width += 4;
                     88:        $rmask = $1;
                     89:       }
                     90:       $rmask = hex ( $rmask );
                     91:       while ( $rmask ) {
                     92:        $width++;
                     93:        $rmask >>= 1;
                     94:       }
                     95:       if ( defined $field->{msb} ) {
                     96:        my $msb_width = ( hex ( $field->{msb} ) - $lsb + 1 );
                     97:        $width ||= $msb_width;
                     98:        die "Inconsistent LSB/MSB/RMASK in $datum->{name}.$field->{name}\n"
                     99:            unless $width == $msb_width;
                    100:       }
                    101:       printf "\tpseudo_bit_t %s[%u];\n", $field->{name}, $width;
                    102:       $lsb += $width;
                    103:     }
                    104:     my $pad_width = ( 64 - $lsb );
                    105:     die "Inconsistent LSB/RMASK in $datum->{name} final field\n"
                    106:        if $pad_width < 0;
                    107:     printf "\tpseudo_bit_t _unused_%u[%u];\n", $reserved_idx++, $pad_width
                    108:        if $pad_width;
                    109:     printf "};\n";
                    110:     printf "struct %s {\n\tPSEUDO_BIT_STRUCT ( struct %s_pb );\n};\n",
                    111:        $datum->{name}, $datum->{name};
                    112:   }
                    113:   printf "/* Default value: %s */\n", $datum->{default}
                    114:       if defined $datum->{default};
                    115:   print "\n";
                    116: }

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