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Diffstat (limited to 'contrib/perl5/utils/c2ph.PL')
| -rw-r--r-- | contrib/perl5/utils/c2ph.PL | 1403 |
1 files changed, 1403 insertions, 0 deletions
diff --git a/contrib/perl5/utils/c2ph.PL b/contrib/perl5/utils/c2ph.PL new file mode 100644 index 0000000000000..38b259f0db187 --- /dev/null +++ b/contrib/perl5/utils/c2ph.PL @@ -0,0 +1,1403 @@ +#!/usr/local/bin/perl + +use Config; +use File::Basename qw(&basename &dirname); +use Cwd; + +# List explicitly here the variables you want Configure to +# generate. Metaconfig only looks for shell variables, so you +# have to mention them as if they were shell variables, not +# %Config entries. Thus you write +# $startperl +# to ensure Configure will look for $Config{startperl}. + +# This forces PL files to create target in same directory as PL file. +# This is so that make depend always knows where to find PL derivatives. +$origdir = cwd; +chdir dirname($0); +$file = basename($0, '.PL'); +$file .= '.com' if $^O eq 'VMS'; + +open OUT,">$file" or die "Can't create $file: $!"; + +print "Extracting $file (with variable substitutions)\n"; + +# In this section, perl variables will be expanded during extraction. +# You can use $Config{...} to use Configure variables. + +print OUT <<"!GROK!THIS!"; +$Config{startperl} + eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' + if \$running_under_some_shell; +!GROK!THIS! + +# In the following, perl variables are not expanded during extraction. + +print OUT <<'!NO!SUBS!'; +# +# +# c2ph (aka pstruct) +# Tom Christiansen, <tchrist@convex.com> +# +# As pstruct, dump C structures as generated from 'cc -g -S' stabs. +# As c2ph, do this PLUS generate perl code for getting at the structures. +# +# See the usage message for more. If this isn't enough, read the code. +# + +=head1 NAME + +c2ph, pstruct - Dump C structures as generated from C<cc -g -S> stabs + +=head1 SYNOPSIS + + c2ph [-dpnP] [var=val] [files ...] + +=head2 OPTIONS + + Options: + + -w wide; short for: type_width=45 member_width=35 offset_width=8 + -x hex; short for: offset_fmt=x offset_width=08 size_fmt=x size_width=04 + + -n do not generate perl code (default when invoked as pstruct) + -p generate perl code (default when invoked as c2ph) + -v generate perl code, with C decls as comments + + -i do NOT recompute sizes for intrinsic datatypes + -a dump information on intrinsics also + + -t trace execution + -d spew reams of debugging output + + -slist give comma-separated list a structures to dump + +=head1 DESCRIPTION + +The following is the old c2ph.doc documentation by Tom Christiansen +<tchrist@perl.com> +Date: 25 Jul 91 08:10:21 GMT + +Once upon a time, I wrote a program called pstruct. It was a perl +program that tried to parse out C structures and display their member +offsets for you. This was especially useful for people looking at +binary dumps or poking around the kernel. + +Pstruct was not a pretty program. Neither was it particularly robust. +The problem, you see, was that the C compiler was much better at parsing +C than I could ever hope to be. + +So I got smart: I decided to be lazy and let the C compiler parse the C, +which would spit out debugger stabs for me to read. These were much +easier to parse. It's still not a pretty program, but at least it's more +robust. + +Pstruct takes any .c or .h files, or preferably .s ones, since that's +the format it is going to massage them into anyway, and spits out +listings like this: + + struct tty { + int tty.t_locker 000 4 + int tty.t_mutex_index 004 4 + struct tty * tty.t_tp_virt 008 4 + struct clist tty.t_rawq 00c 20 + int tty.t_rawq.c_cc 00c 4 + int tty.t_rawq.c_cmax 010 4 + int tty.t_rawq.c_cfx 014 4 + int tty.t_rawq.c_clx 018 4 + struct tty * tty.t_rawq.c_tp_cpu 01c 4 + struct tty * tty.t_rawq.c_tp_iop 020 4 + unsigned char * tty.t_rawq.c_buf_cpu 024 4 + unsigned char * tty.t_rawq.c_buf_iop 028 4 + struct clist tty.t_canq 02c 20 + int tty.t_canq.c_cc 02c 4 + int tty.t_canq.c_cmax 030 4 + int tty.t_canq.c_cfx 034 4 + int tty.t_canq.c_clx 038 4 + struct tty * tty.t_canq.c_tp_cpu 03c 4 + struct tty * tty.t_canq.c_tp_iop 040 4 + unsigned char * tty.t_canq.c_buf_cpu 044 4 + unsigned char * tty.t_canq.c_buf_iop 048 4 + struct clist tty.t_outq 04c 20 + int tty.t_outq.c_cc 04c 4 + int tty.t_outq.c_cmax 050 4 + int tty.t_outq.c_cfx 054 4 + int tty.t_outq.c_clx 058 4 + struct tty * tty.t_outq.c_tp_cpu 05c 4 + struct tty * tty.t_outq.c_tp_iop 060 4 + unsigned char * tty.t_outq.c_buf_cpu 064 4 + unsigned char * tty.t_outq.c_buf_iop 068 4 + (*int)() tty.t_oproc_cpu 06c 4 + (*int)() tty.t_oproc_iop 070 4 + (*int)() tty.t_stopproc_cpu 074 4 + (*int)() tty.t_stopproc_iop 078 4 + struct thread * tty.t_rsel 07c 4 + +etc. + + +Actually, this was generated by a particular set of options. You can control +the formatting of each column, whether you prefer wide or fat, hex or decimal, +leading zeroes or whatever. + +All you need to be able to use this is a C compiler than generates +BSD/GCC-style stabs. The B<-g> option on native BSD compilers and GCC +should get this for you. + +To learn more, just type a bogus option, like B<-\?>, and a long usage message +will be provided. There are a fair number of possibilities. + +If you're only a C programmer, than this is the end of the message for you. +You can quit right now, and if you care to, save off the source and run it +when you feel like it. Or not. + + + +But if you're a perl programmer, then for you I have something much more +wondrous than just a structure offset printer. + +You see, if you call pstruct by its other incybernation, c2ph, you have a code +generator that translates C code into perl code! Well, structure and union +declarations at least, but that's quite a bit. + +Prior to this point, anyone programming in perl who wanted to interact +with C programs, like the kernel, was forced to guess the layouts of +the C strutures, and then hardwire these into his program. Of course, +when you took your wonderfully crafted program to a system where the +sgtty structure was laid out differently, you program broke. Which is +a shame. + +We've had Larry's h2ph translator, which helped, but that only works on +cpp symbols, not real C, which was also very much needed. What I offer +you is a symbolic way of getting at all the C structures. I've couched +them in terms of packages and functions. Consider the following program: + + #!/usr/local/bin/perl + + require 'syscall.ph'; + require 'sys/time.ph'; + require 'sys/resource.ph'; + + $ru = "\0" x &rusage'sizeof(); + + syscall(&SYS_getrusage, &RUSAGE_SELF, $ru) && die "getrusage: $!"; + + @ru = unpack($t = &rusage'typedef(), $ru); + + $utime = $ru[ &rusage'ru_utime + &timeval'tv_sec ] + + ($ru[ &rusage'ru_utime + &timeval'tv_usec ]) / 1e6; + + $stime = $ru[ &rusage'ru_stime + &timeval'tv_sec ] + + ($ru[ &rusage'ru_stime + &timeval'tv_usec ]) / 1e6; + + printf "you have used %8.3fs+%8.3fu seconds.\n", $utime, $stime; + + +As you see, the name of the package is the name of the structure. Regular +fields are just their own names. Plus the following accessor functions are +provided for your convenience: + + struct This takes no arguments, and is merely the number of first-level + elements in the structure. You would use this for indexing + into arrays of structures, perhaps like this + + + $usec = $u[ &user'u_utimer + + (&ITIMER_VIRTUAL * &itimerval'struct) + + &itimerval'it_value + + &timeval'tv_usec + ]; + + sizeof Returns the bytes in the structure, or the member if + you pass it an argument, such as + + &rusage'sizeof(&rusage'ru_utime) + + typedef This is the perl format definition for passing to pack and + unpack. If you ask for the typedef of a nothing, you get + the whole structure, otherwise you get that of the member + you ask for. Padding is taken care of, as is the magic to + guarantee that a union is unpacked into all its aliases. + Bitfields are not quite yet supported however. + + offsetof This function is the byte offset into the array of that + member. You may wish to use this for indexing directly + into the packed structure with vec() if you're too lazy + to unpack it. + + typeof Not to be confused with the typedef accessor function, this + one returns the C type of that field. This would allow + you to print out a nice structured pretty print of some + structure without knoning anything about it beforehand. + No args to this one is a noop. Someday I'll post such + a thing to dump out your u structure for you. + + +The way I see this being used is like basically this: + + % h2ph <some_include_file.h > /usr/lib/perl/tmp.ph + % c2ph some_include_file.h >> /usr/lib/perl/tmp.ph + % install + +It's a little tricker with c2ph because you have to get the includes right. +I can't know this for your system, but it's not usually too terribly difficult. + +The code isn't pretty as I mentioned -- I never thought it would be a 1000- +line program when I started, or I might not have begun. :-) But I would have +been less cavalier in how the parts of the program communicated with each +other, etc. It might also have helped if I didn't have to divine the makeup +of the stabs on the fly, and then account for micro differences between my +compiler and gcc. + +Anyway, here it is. Should run on perl v4 or greater. Maybe less. + + + --tom + +=cut + +$RCSID = '$Id: c2ph,v 1.7 95/10/28 10:41:47 tchrist Exp Locker: tchrist $'; + + +###################################################################### + +# some handy data definitions. many of these can be reset later. + +$bitorder = 'b'; # ascending; set to B for descending bit fields + +%intrinsics = +%template = ( + 'char', 'c', + 'unsigned char', 'C', + 'short', 's', + 'short int', 's', + 'unsigned short', 'S', + 'unsigned short int', 'S', + 'short unsigned int', 'S', + 'int', 'i', + 'unsigned int', 'I', + 'long', 'l', + 'long int', 'l', + 'unsigned long', 'L', + 'unsigned long', 'L', + 'long unsigned int', 'L', + 'unsigned long int', 'L', + 'long long', 'q', + 'long long int', 'q', + 'unsigned long long', 'Q', + 'unsigned long long int', 'Q', + 'float', 'f', + 'double', 'd', + 'pointer', 'p', + 'null', 'x', + 'neganull', 'X', + 'bit', $bitorder, +); + +&buildscrunchlist; +delete $intrinsics{'neganull'}; +delete $intrinsics{'bit'}; +delete $intrinsics{'null'}; + +# use -s to recompute sizes +%sizeof = ( + 'char', '1', + 'unsigned char', '1', + 'short', '2', + 'short int', '2', + 'unsigned short', '2', + 'unsigned short int', '2', + 'short unsigned int', '2', + 'int', '4', + 'unsigned int', '4', + 'long', '4', + 'long int', '4', + 'unsigned long', '4', + 'unsigned long int', '4', + 'long unsigned int', '4', + 'long long', '8', + 'long long int', '8', + 'unsigned long long', '8', + 'unsigned long long int', '8', + 'float', '4', + 'double', '8', + 'pointer', '4', +); + +($type_width, $member_width, $offset_width, $size_width) = (20, 20, 6, 5); + +($offset_fmt, $size_fmt) = ('d', 'd'); + +$indent = 2; + +$CC = 'cc'; +$CFLAGS = '-g -S'; +$DEFINES = ''; + +$perl++ if $0 =~ m#/?c2ph$#; + +require 'getopts.pl'; + +eval '$'.$1.'$2;' while $ARGV[0] =~ /^([A-Za-z_]+=)(.*)/ && shift; + +&Getopts('aixdpvtnws:') || &usage(0); + +$opt_d && $debug++; +$opt_t && $trace++; +$opt_p && $perl++; +$opt_v && $verbose++; +$opt_n && ($perl = 0); + +if ($opt_w) { + ($type_width, $member_width, $offset_width) = (45, 35, 8); +} +if ($opt_x) { + ($offset_fmt, $offset_width, $size_fmt, $size_width) = ( 'x', '08', 'x', 04 ); +} + +eval '$'.$1.'$2;' while $ARGV[0] =~ /^([A-Za-z_]+=)(.*)/ && shift; + +sub PLUMBER { + select(STDERR); + print "oops, apperent pager foulup\n"; + $isatty++; + &usage(1); +} + +sub usage { + local($oops) = @_; + unless (-t STDOUT) { + select(STDERR); + } elsif (!$oops) { + $isatty++; + $| = 1; + print "hit <RETURN> for further explanation: "; + <STDIN>; + open (PIPE, "|". ($ENV{PAGER} || 'more')); + $SIG{PIPE} = PLUMBER; + select(PIPE); + } + + print "usage: $0 [-dpnP] [var=val] [files ...]\n"; + + exit unless $isatty; + + print <<EOF; + +Options: + +-w wide; short for: type_width=45 member_width=35 offset_width=8 +-x hex; short for: offset_fmt=x offset_width=08 size_fmt=x size_width=04 + +-n do not generate perl code (default when invoked as pstruct) +-p generate perl code (default when invoked as c2ph) +-v generate perl code, with C decls as comments + +-i do NOT recompute sizes for intrinsic datatypes +-a dump information on intrinsics also + +-t trace execution +-d spew reams of debugging output + +-slist give comma-separated list a structures to dump + + +Var Name Default Value Meaning + +EOF + + &defvar('CC', 'which_compiler to call'); + &defvar('CFLAGS', 'how to generate *.s files with stabs'); + &defvar('DEFINES','any extra cflags or cpp defines, like -I, -D, -U'); + + print "\n"; + + &defvar('type_width', 'width of type field (column 1)'); + &defvar('member_width', 'width of member field (column 2)'); + &defvar('offset_width', 'width of offset field (column 3)'); + &defvar('size_width', 'width of size field (column 4)'); + + print "\n"; + + &defvar('offset_fmt', 'sprintf format type for offset'); + &defvar('size_fmt', 'sprintf format type for size'); + + print "\n"; + + &defvar('indent', 'how far to indent each nesting level'); + + print <<'EOF'; + + If any *.[ch] files are given, these will be catted together into + a temporary *.c file and sent through: + $CC $CFLAGS $DEFINES + and the resulting *.s groped for stab information. If no files are + supplied, then stdin is read directly with the assumption that it + contains stab information. All other liens will be ignored. At + most one *.s file should be supplied. + +EOF + close PIPE; + exit 1; +} + +sub defvar { + local($var, $msg) = @_; + printf "%-16s%-15s %s\n", $var, eval "\$$var", $msg; +} + +$recurse = 1; + +if (@ARGV) { + if (grep(!/\.[csh]$/,@ARGV)) { + warn "Only *.[csh] files expected!\n"; + &usage; + } + elsif (grep(/\.s$/,@ARGV)) { + if (@ARGV > 1) { + warn "Only one *.s file allowed!\n"; + &usage; + } + } + elsif (@ARGV == 1 && $ARGV[0] =~ /\.c$/) { + local($dir, $file) = $ARGV[0] =~ m#(.*/)?(.*)$#; + $chdir = "cd $dir; " if $dir; + &system("$chdir$CC $CFLAGS $DEFINES $file") && exit 1; + $ARGV[0] =~ s/\.c$/.s/; + } + else { + $TMP = "/tmp/c2ph.$$.c"; + &system("cat @ARGV > $TMP") && exit 1; + &system("cd /tmp; $CC $CFLAGS $DEFINES $TMP") && exit 1; + unlink $TMP; + $TMP =~ s/\.c$/.s/; + @ARGV = ($TMP); + } +} + +if ($opt_s) { + for (split(/[\s,]+/, $opt_s)) { + $interested{$_}++; + } +} + + +$| = 1 if $debug; + +main: { + + if ($trace) { + if (-t && !@ARGV) { + print STDERR "reading from your keyboard: "; + } else { + print STDERR "reading from " . (@ARGV ? "@ARGV" : "<STDIN>").": "; + } + } + +STAB: while (<>) { + if ($trace && !($. % 10)) { + $lineno = $..''; + print STDERR $lineno, "\b" x length($lineno); + } + next unless /^\s*\.stabs\s+/; + $line = $_; + s/^\s*\.stabs\s+//; + if (s/\\\\"[d,]+$//) { + $saveline .= $line; + $savebar = $_; + next STAB; + } + if ($saveline) { + s/^"//; + $_ = $savebar . $_; + $line = $saveline; + } + &stab; + $savebar = $saveline = undef; + } + print STDERR "$.\n" if $trace; + unlink $TMP if $TMP; + + &compute_intrinsics if $perl && !$opt_i; + + print STDERR "resolving types\n" if $trace; + + &resolve_types; + &adjust_start_addrs; + + $sum = 2 + $type_width + $member_width; + $pmask1 = "%-${type_width}s %-${member_width}s"; + $pmask2 = "%-${sum}s %${offset_width}${offset_fmt}%s %${size_width}${size_fmt}%s"; + + + + if ($perl) { + # resolve template -- should be in stab define order, but even this isn't enough. + print STDERR "\nbuilding type templates: " if $trace; + for $i (reverse 0..$#type) { + next unless defined($name = $type[$i]); + next unless defined $struct{$name}; + ($iname = $name) =~ s/\..*//; + $build_recursed = 0; + &build_template($name) unless defined $template{&psou($name)} || + $opt_s && !$interested{$iname}; + } + print STDERR "\n\n" if $trace; + } + + print STDERR "dumping structs: " if $trace; + + local($iam); + + + + foreach $name (sort keys %struct) { + ($iname = $name) =~ s/\..*//; + next if $opt_s && !$interested{$iname}; + print STDERR "$name " if $trace; + + undef @sizeof; + undef @typedef; + undef @offsetof; + undef @indices; + undef @typeof; + undef @fieldnames; + + $mname = &munge($name); + + $fname = &psou($name); + + print "# " if $perl && $verbose; + $pcode = ''; + print "$fname {\n" if !$perl || $verbose; + $template{$fname} = &scrunch($template{$fname}) if $perl; + &pstruct($name,$name,0); + print "# " if $perl && $verbose; + print "}\n" if !$perl || $verbose; + print "\n" if $perl && $verbose; + + if ($perl) { + print "$pcode"; + + printf("\nsub %-32s { %4d; }\n\n", "${mname}'struct", $countof{$name}); + + print <<EOF; +sub ${mname}'typedef { + local(\$${mname}'index) = shift; + defined \$${mname}'index + ? \$${mname}'typedef[\$${mname}'index] + : \$${mname}'typedef; +} +EOF + + print <<EOF; +sub ${mname}'sizeof { + local(\$${mname}'index) = shift; + defined \$${mname}'index + ? \$${mname}'sizeof[\$${mname}'index] + : \$${mname}'sizeof; +} +EOF + + print <<EOF; +sub ${mname}'offsetof { + local(\$${mname}'index) = shift; + defined \$${mname}index + ? \$${mname}'offsetof[\$${mname}'index] + : \$${mname}'sizeof; +} +EOF + + print <<EOF; +sub ${mname}'typeof { + local(\$${mname}'index) = shift; + defined \$${mname}index + ? \$${mname}'typeof[\$${mname}'index] + : '$name'; +} +EOF + + print <<EOF; +sub ${mname}'fieldnames { + \@${mname}'fieldnames; +} +EOF + + $iam = ($isastruct{$name} && 's') || ($isaunion{$name} && 'u'); + + print <<EOF; +sub ${mname}'isastruct { + '$iam'; +} +EOF + + print "\$${mname}'typedef = '" . &scrunch($template{$fname}) + . "';\n"; + + print "\$${mname}'sizeof = $sizeof{$name};\n\n"; + + + print "\@${mname}'indices = (", &squishseq(@indices), ");\n"; + + print "\n"; + + print "\@${mname}'typedef[\@${mname}'indices] = (", + join("\n\t", '', @typedef), "\n );\n\n"; + print "\@${mname}'sizeof[\@${mname}'indices] = (", + join("\n\t", '', @sizeof), "\n );\n\n"; + print "\@${mname}'offsetof[\@${mname}'indices] = (", + join("\n\t", '', @offsetof), "\n );\n\n"; + print "\@${mname}'typeof[\@${mname}'indices] = (", + join("\n\t", '', @typeof), "\n );\n\n"; + print "\@${mname}'fieldnames[\@${mname}'indices] = (", + join("\n\t", '', @fieldnames), "\n );\n\n"; + + $template_printed{$fname}++; + $size_printed{$fname}++; + } + print "\n"; + } + + print STDERR "\n" if $trace; + + unless ($perl && $opt_a) { + print "\n1;\n" if $perl; + exit; + } + + + + foreach $name (sort bysizevalue keys %intrinsics) { + next if $size_printed{$name}; + print '$',&munge($name),"'sizeof = ", $sizeof{$name}, ";\n"; + } + + print "\n"; + + sub bysizevalue { $sizeof{$a} <=> $sizeof{$b}; } + + + foreach $name (sort keys %intrinsics) { + print '$',&munge($name),"'typedef = '", $template{$name}, "';\n"; + } + + print "\n1;\n" if $perl; + + exit; +} + +######################################################################################## + + +sub stab { + next unless $continued || /:[\$\w]+(\(\d+,\d+\))?=[\*\$\w]+/; # (\d+,\d+) is for sun + s/"// || next; + s/",([x\d]+),([x\d]+),([x\d]+),.*// || next; + + next if /^\s*$/; + + $size = $3 if $3; + $_ = $continued . $_ if length($continued); + if (s/\\\\$//) { + # if last 2 chars of string are '\\' then stab is continued + # in next stab entry + chop; + $continued = $_; + next; + } + $continued = ''; + + + $line = $_; + + if (($name, $pdecl) = /^([\$ \w]+):[tT]((\d+)(=[rufs*](\d+))+)$/) { + print "$name is a typedef for some funky pointers: $pdecl\n" if $debug; + &pdecl($pdecl); + next; + } + + + + if (/(([ \w]+):t(\d+|\(\d+,\d+\)))=r?(\d+|\(\d+,\d+\))(;\d+;\d+;)?/) { + local($ident) = $2; + push(@intrinsics, $ident); + $typeno = &typeno($3); + $type[$typeno] = $ident; + print STDERR "intrinsic $ident in new type $typeno\n" if $debug; + next; + } + + if (($name, $typeordef, $typeno, $extra, $struct, $_) + = /^([\$ \w]+):([ustT])(\d+|\(\d+,\d+\))(=[rufs*](\d+))?(.*)$/) + { + $typeno = &typeno($typeno); # sun foolery + } + elsif (/^[\$\w]+:/) { + next; # variable + } + else { + warn "can't grok stab: <$_> in: $line " if $_; + next; + } + + #warn "got size $size for $name\n"; + $sizeof{$name} = $size if $size; + + s/;[-\d]*;[-\d]*;$//; # we don't care about ranges + + $typenos{$name} = $typeno; + + unless (defined $type[$typeno]) { + &panic("type 0??") unless $typeno; + $type[$typeno] = $name unless defined $type[$typeno]; + printf "new type $typeno is $name" if $debug; + if ($extra =~ /\*/ && defined $type[$struct]) { + print ", a typedef for a pointer to " , $type[$struct] if $debug; + } + } else { + printf "%s is type %d", $name, $typeno if $debug; + print ", a typedef for " , $type[$typeno] if $debug; + } + print "\n" if $debug; + #next unless $extra =~ /[su*]/; + + #$type[$struct] = $name; + + if ($extra =~ /[us*]/) { + &sou($name, $extra); + $_ = &sdecl($name, $_, 0); + } + elsif (/^=ar/) { + print "it's a bare array typedef -- that's pretty sick\n" if $debug; + $_ = "$typeno$_"; + $scripts = ''; + $_ = &adecl($_,1); + + } + elsif (s/((\w+):t(\d+|\(\d+,\d+\)))?=r?(;\d+;\d+;)?//) { # the ?'s are for gcc + push(@intrinsics, $2); + $typeno = &typeno($3); + $type[$typeno] = $2; + print STDERR "intrinsic $2 in new type $typeno\n" if $debug; + } + elsif (s/^=e//) { # blessed be thy compiler; mine won't do this + &edecl; + } + else { + warn "Funny remainder for $name on line $_ left in $line " if $_; + } +} + +sub typeno { # sun thinks types are (0,27) instead of just 27 + local($_) = @_; + s/\(\d+,(\d+)\)/$1/; + $_; +} + +sub pstruct { + local($what,$prefix,$base) = @_; + local($field, $fieldname, $typeno, $count, $offset, $entry); + local($fieldtype); + local($type, $tname); + local($mytype, $mycount, $entry2); + local($struct_count) = 0; + local($pad, $revpad, $length, $prepad, $lastoffset, $lastlength, $fmt); + local($bits,$bytes); + local($template); + + + local($mname) = &munge($name); + + sub munge { + local($_) = @_; + s/[\s\$\.]/_/g; + $_; + } + + local($sname) = &psou($what); + + $nesting++; + + for $field (split(/;/, $struct{$what})) { + $pad = $prepad = 0; + $entry = ''; + ($fieldname, $typeno, $count, $offset, $length) = split(/,/, $field); + + $type = $type[$typeno]; + + $type =~ /([^[]*)(\[.*\])?/; + $mytype = $1; + $count .= $2; + $fieldtype = &psou($mytype); + + local($fname) = &psou($name); + + if ($build_templates) { + + $pad = ($offset - ($lastoffset + $lastlength))/8 + if defined $lastoffset; + + if (! $finished_template{$sname}) { + if ($isaunion{$what}) { + $template{$sname} .= 'X' x $revpad . ' ' if $revpad; + } else { + $template{$sname} .= 'x' x $pad . ' ' if $pad; + } + } + + $template = &fetch_template($type); + &repeat_template($template,$count); + + if (! $finished_template{$sname}) { + $template{$sname} .= $template; + } + + $revpad = $length/8 if $isaunion{$what}; + + ($lastoffset, $lastlength) = ($offset, $length); + + } else { + print '# ' if $perl && $verbose; + $entry = sprintf($pmask1, + ' ' x ($nesting * $indent) . $fieldtype, + "$prefix.$fieldname" . $count); + + $entry =~ s/(\*+)( )/$2$1/; + + printf $pmask2, + $entry, + ($base+$offset)/8, + ($bits = ($base+$offset)%8) ? ".$bits" : " ", + $length/8, + ($bits = $length % 8) ? ".$bits": "" + if !$perl || $verbose; + + if ($perl) { + $template = &fetch_template($type); + &repeat_template($template,$count); + } + + if ($perl && $nesting == 1) { + + push(@sizeof, int($length/8) .",\t# $fieldname"); + push(@offsetof, int($offset/8) .",\t# $fieldname"); + local($little) = &scrunch($template); + push(@typedef, "'$little', \t# $fieldname"); + $type =~ s/(struct|union) //; + push(@typeof, "'$mytype" . ($count ? $count : '') . + "',\t# $fieldname"); + push(@fieldnames, "'$fieldname',"); + } + + print ' ', ' ' x $indent x $nesting, $template + if $perl && $verbose; + + print "\n" if !$perl || $verbose; + + } + if ($perl) { + local($mycount) = defined $struct{$mytype} ? $countof{$mytype} : 1; + $mycount *= &scripts2count($count) if $count; + if ($nesting==1 && !$build_templates) { + $pcode .= sprintf("sub %-32s { %4d; }\n", + "${mname}'${fieldname}", $struct_count); + push(@indices, $struct_count); + } + $struct_count += $mycount; + } + + + &pstruct($type, "$prefix.$fieldname", $base+$offset) + if $recurse && defined $struct{$type}; + } + + $countof{$what} = $struct_count unless defined $countof{$whati}; + + $template{$sname} .= '$' if $build_templates; + $finished_template{$sname}++; + + if ($build_templates && !defined $sizeof{$name}) { + local($fmt) = &scrunch($template{$sname}); + print STDERR "no size for $name, punting with $fmt..." if $debug; + eval '$sizeof{$name} = length(pack($fmt, ()))'; + if ($@) { + chop $@; + warn "couldn't get size for \$name: $@"; + } else { + print STDERR $sizeof{$name}, "\n" if $debUg; + } + } + + --$nesting; +} + + +sub psize { + local($me) = @_; + local($amstruct) = $struct{$me} ? 'struct ' : ''; + + print '$sizeof{\'', $amstruct, $me, '\'} = '; + printf "%d;\n", $sizeof{$me}; +} + +sub pdecl { + local($pdecl) = @_; + local(@pdecls); + local($tname); + + warn "pdecl: $pdecl\n" if $debug; + + $pdecl =~ s/\(\d+,(\d+)\)/$1/g; + $pdecl =~ s/\*//g; + @pdecls = split(/=/, $pdecl); + $typeno = $pdecls[0]; + $tname = pop @pdecls; + + if ($tname =~ s/^f//) { $tname = "$tname&"; } + #else { $tname = "$tname*"; } + + for (reverse @pdecls) { + $tname .= s/^f// ? "&" : "*"; + #$tname =~ s/^f(.*)/$1&/; + print "type[$_] is $tname\n" if $debug; + $type[$_] = $tname unless defined $type[$_]; + } +} + + + +sub adecl { + ($arraytype, $unknown, $lower, $upper) = (); + #local($typeno); + # global $typeno, @type + local($_, $typedef) = @_; + + while (s/^((\d+|\(\d+,\d+\))=)?ar(\d+|\(\d+,\d+\));//) { + ($arraytype, $unknown) = ($2, $3); + $arraytype = &typeno($arraytype); + $unknown = &typeno($unknown); + if (s/^(\d+);(\d+);//) { + ($lower, $upper) = ($1, $2); + $scripts .= '[' . ($upper+1) . ']'; + } else { + warn "can't find array bounds: $_"; + } + } + if (s/^([(,)\d*f=]*),(\d+),(\d+);//) { + ($start, $length) = ($2, $3); + $whatis = $1; + if ($whatis =~ /^(\d+|\(\d+,\d+\))=/) { + $typeno = &typeno($1); + &pdecl($whatis); + } else { + $typeno = &typeno($whatis); + } + } elsif (s/^(\d+)(=[*suf]\d*)//) { + local($whatis) = $2; + + if ($whatis =~ /[f*]/) { + &pdecl($whatis); + } elsif ($whatis =~ /[su]/) { # + print "$prefix.$fieldname is an array$scripts anon structs; disgusting\n" + if $debug; + #$type[$typeno] = $name unless defined $type[$typeno]; + ##printf "new type $typeno is $name" if $debug; + $typeno = $1; + $type[$typeno] = "$prefix.$fieldname"; + local($name) = $type[$typeno]; + &sou($name, $whatis); + $_ = &sdecl($name, $_, $start+$offset); + 1; + $start = $start{$name}; + $offset = $sizeof{$name}; + $length = $offset; + } else { + warn "what's this? $whatis in $line "; + } + } elsif (/^\d+$/) { + $typeno = $_; + } else { + warn "bad array stab: $_ in $line "; + next STAB; + } + #local($wasdef) = defined($type[$typeno]) && $debug; + #if ($typedef) { + #print "redefining $type[$typeno] to " if $wasdef; + #$type[$typeno] = "$whatis$scripts"; # unless defined $type[$typeno]; + #print "$type[$typeno]\n" if $wasdef; + #} else { + #$type[$arraytype] = $type[$typeno] unless defined $type[$arraytype]; + #} + $type[$arraytype] = "$type[$typeno]$scripts" if defined $type[$typeno]; + print "type[$arraytype] is $type[$arraytype]\n" if $debug; + print "$prefix.$fieldname is an array of $type[$arraytype]\n" if $debug; + $_; +} + + + +sub sdecl { + local($prefix, $_, $offset) = @_; + + local($fieldname, $scripts, $type, $arraytype, $unknown, + $whatis, $pdecl, $upper,$lower, $start,$length) = (); + local($typeno,$sou); + + +SFIELD: + while (/^([^;]+);/) { + $scripts = ''; + warn "sdecl $_\n" if $debug; + if (s/^([\$\w]+)://) { + $fieldname = $1; + } elsif (s/(\d+)=([us])(\d+|\(\d+,\d+\))//) { # + $typeno = &typeno($1); + $type[$typeno] = "$prefix.$fieldname"; + local($name) = "$prefix.$fieldname"; + &sou($name,$2); + $_ = &sdecl("$prefix.$fieldname", $_, $start+$offset); + $start = $start{$name}; + $offset += $sizeof{$name}; + #print "done with anon, start is $start, offset is $offset\n"; + #next SFIELD; + } else { + warn "weird field $_ of $line" if $debug; + next STAB; + #$fieldname = &gensym; + #$_ = &sdecl("$prefix.$fieldname", $_, $start+$offset); + } + + if (/^(\d+|\(\d+,\d+\))=ar/) { + $_ = &adecl($_); + } + elsif (s/^(\d+|\(\d+,\d+\))?,(\d+),(\d+);//) { + ($start, $length) = ($2, $3); + &panic("no length?") unless $length; + $typeno = &typeno($1) if $1; + } + elsif (s/^(\d+)=xs\w+:,(\d+),(\d+);//) { + ($start, $length) = ($2, $3); + &panic("no length?") unless $length; + $typeno = &typeno($1) if $1; + } + elsif (s/^((\d+|\(\d+,\d+\))(=[*f](\d+|\(\d+,\d+\)))+),(\d+),(\d+);//) { + ($pdecl, $start, $length) = ($1,$5,$6); + &pdecl($pdecl); + } + elsif (s/(\d+)=([us])(\d+|\(\d+,\d+\))//) { # the dratted anon struct + ($typeno, $sou) = ($1, $2); + $typeno = &typeno($typeno); + if (defined($type[$typeno])) { + warn "now how did we get type $1 in $fieldname of $line?"; + } else { + print "anon type $typeno is $prefix.$fieldname\n" if $debug; + $type[$typeno] = "$prefix.$fieldname" unless defined $type[$typeno]; + }; + local($name) = "$prefix.$fieldname"; + &sou($name,$sou); + print "anon ".($isastruct{$name}) ? "struct":"union"." for $prefix.$fieldname\n" if $debug; + $type[$typeno] = "$prefix.$fieldname"; + $_ = &sdecl("$prefix.$fieldname", $_, $start+$offset); + $start = $start{$name}; + $length = $sizeof{$name}; + } + else { + warn "can't grok stab for $name ($_) in line $line "; + next STAB; + } + + &panic("no length for $prefix.$fieldname") unless $length; + $struct{$name} .= join(',', $fieldname, $typeno, $scripts, $start, $length) . ';'; + } + if (s/;\d*,(\d+),(\d+);//) { + local($start, $size) = ($1, $2); + $sizeof{$prefix} = $size; + print "start of $prefix is $start, size of $sizeof{$prefix}\n" if $debug; + $start{$prefix} = $start; + } + $_; +} + +sub edecl { + s/;$//; + $enum{$name} = $_; + $_ = ''; +} + +sub resolve_types { + local($sou); + for $i (0 .. $#type) { + next unless defined $type[$i]; + $_ = $type[$i]; + unless (/\d/) { + print "type[$i] $type[$i]\n" if $debug; + next; + } + print "type[$i] $_ ==> " if $debug; + s/^(\d+)(\**)\&\*(\**)/"$2($3".&type($1) . ')()'/e; + s/^(\d+)\&/&type($1)/e; + s/^(\d+)/&type($1)/e; + s/(\*+)([^*]+)(\*+)/$1$3$2/; + s/\((\*+)(\w+)(\*+)\)/$3($1$2)/; + s/^(\d+)([\*\[].*)/&type($1).$2/e; + #s/(\d+)(\*|(\[[\[\]\d\*]+]\])+)/&type($1).$2/ge; + $type[$i] = $_; + print "$_\n" if $debug; + } +} +sub type { &psou($type[$_[0]] || "<UNDEFINED>"); } + +sub adjust_start_addrs { + for (sort keys %start) { + ($basename = $_) =~ s/\.[^.]+$//; + $start{$_} += $start{$basename}; + print "start: $_ @ $start{$_}\n" if $debug; + } +} + +sub sou { + local($what, $_) = @_; + /u/ && $isaunion{$what}++; + /s/ && $isastruct{$what}++; +} + +sub psou { + local($what) = @_; + local($prefix) = ''; + if ($isaunion{$what}) { + $prefix = 'union '; + } elsif ($isastruct{$what}) { + $prefix = 'struct '; + } + $prefix . $what; +} + +sub scrunch { + local($_) = @_; + + return '' if $_ eq ''; + + study; + + s/\$//g; + s/ / /g; + 1 while s/(\w) \1/$1$1/g; + + # i wanna say this, but perl resists my efforts: + # s/(\w)(\1+)/$2 . length($1)/ge; + + &quick_scrunch; + + s/ $//; + + $_; +} + +sub buildscrunchlist { + $scrunch_code = "sub quick_scrunch {\n"; + for (values %intrinsics) { + $scrunch_code .= "\ts/(${_}{2,})/'$_' . length(\$1)/ge;\n"; + } + $scrunch_code .= "}\n"; + print "$scrunch_code" if $debug; + eval $scrunch_code; + &panic("can't eval scrunch_code $@ \nscrunch_code") if $@; +} + +sub fetch_template { + local($mytype) = @_; + local($fmt); + local($count) = 1; + + &panic("why do you care?") unless $perl; + + if ($mytype =~ s/(\[\d+\])+$//) { + $count .= $1; + } + + if ($mytype =~ /\*/) { + $fmt = $template{'pointer'}; + } + elsif (defined $template{$mytype}) { + $fmt = $template{$mytype}; + } + elsif (defined $struct{$mytype}) { + if (!defined $template{&psou($mytype)}) { + &build_template($mytype) unless $mytype eq $name; + } + elsif ($template{&psou($mytype)} !~ /\$$/) { + #warn "incomplete template for $mytype\n"; + } + $fmt = $template{&psou($mytype)} || '?'; + } + else { + warn "unknown fmt for $mytype\n"; + $fmt = '?'; + } + + $fmt x $count . ' '; +} + +sub compute_intrinsics { + local($TMP) = "/tmp/c2ph-i.$$.c"; + open (TMP, ">$TMP") || die "can't open $TMP: $!"; + select(TMP); + + print STDERR "computing intrinsic sizes: " if $trace; + + undef %intrinsics; + + print <<'EOF'; +main() { + char *mask = "%d %s\n"; +EOF + + for $type (@intrinsics) { + next if !$type || $type eq 'void' || $type =~ /complex/; # sun stuff + print <<"EOF"; + printf(mask,sizeof($type), "$type"); +EOF + } + + print <<'EOF'; + printf(mask,sizeof(char *), "pointer"); + exit(0); +} +EOF + close TMP; + + select(STDOUT); + open(PIPE, "cd /tmp && $CC $TMP && /tmp/a.out|"); + while (<PIPE>) { + chop; + split(' ',$_,2);; + print "intrinsic $_[1] is size $_[0]\n" if $debug; + $sizeof{$_[1]} = $_[0]; + $intrinsics{$_[1]} = $template{$_[0]}; + } + close(PIPE) || die "couldn't read intrinsics!"; + unlink($TMP, '/tmp/a.out'); + print STDERR "done\n" if $trace; +} + +sub scripts2count { + local($_) = @_; + + s/^\[//; + s/\]$//; + s/\]\[/*/g; + $_ = eval; + &panic("$_: $@") if $@; + $_; +} + +sub system { + print STDERR "@_\n" if $trace; + system @_; +} + +sub build_template { + local($name) = @_; + + &panic("already got a template for $name") if defined $template{$name}; + + local($build_templates) = 1; + + local($lparen) = '(' x $build_recursed; + local($rparen) = ')' x $build_recursed; + + print STDERR "$lparen$name$rparen " if $trace; + $build_recursed++; + &pstruct($name,$name,0); + print STDERR "TEMPLATE for $name is ", $template{&psou($name)}, "\n" if $debug; + --$build_recursed; +} + + +sub panic { + + select(STDERR); + + print "\npanic: @_\n"; + + exit 1 if $] <= 4.003; # caller broken + + local($i,$_); + local($p,$f,$l,$s,$h,$a,@a,@sub); + for ($i = 0; ($p,$f,$l,$s,$h,$w) = caller($i); $i++) { + @a = @DB'args; + for (@a) { + if (/^StB\000/ && length($_) == length($_main{'_main'})) { + $_ = sprintf("%s",$_); + } + else { + s/'/\\'/g; + s/([^\0]*)/'$1'/ unless /^-?[\d.]+$/; + s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; + s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; + } + } + $w = $w ? '@ = ' : '$ = '; + $a = $h ? '(' . join(', ', @a) . ')' : ''; + push(@sub, "$w&$s$a from file $f line $l\n"); + last if $signal; + } + for ($i=0; $i <= $#sub; $i++) { + last if $signal; + print $sub[$i]; + } + exit 1; +} + +sub squishseq { + local($num); + local($last) = -1e8; + local($string); + local($seq) = '..'; + + while (defined($num = shift)) { + if ($num == ($last + 1)) { + $string .= $seq unless $inseq++; + $last = $num; + next; + } elsif ($inseq) { + $string .= $last unless $last == -1e8; + } + + $string .= ',' if defined $string; + $string .= $num; + $last = $num; + $inseq = 0; + } + $string .= $last if $inseq && $last != -e18; + $string; +} + +sub repeat_template { + # local($template, $scripts) = @_; have to change caller's values + + if ( $_[1] ) { + local($ncount) = &scripts2count($_[1]); + if ($_[0] =~ /^\s*c\s*$/i) { + $_[0] = "A$ncount "; + $_[1] = ''; + } else { + $_[0] = $template x $ncount; + } + } +} +!NO!SUBS! + +close OUT or die "Can't close $file: $!"; +chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; +unlink 'pstruct'; +print "Linking c2ph to pstruct.\n"; +if (defined $Config{d_link}) { + link 'c2ph', 'pstruct'; +} else { + unshift @INC, '../lib'; + require File::Copy; + File::Copy::syscopy('c2ph', 'pstruct'); +} +exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; +chdir $origdir; |