mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-11-21 03:14:19 +08:00
b79f0d0cc3
When we're dealing with a field which is guaranteed to have an enum type, then declare it as such so it shows up in debuggers.
260 lines
6.9 KiB
Perl
260 lines
6.9 KiB
Perl
#!/usr/bin/perl
|
|
#
|
|
# insns.pl produce insnsa.c, insnsd.c, insnsi.h, insnsn.c from insns.dat
|
|
#
|
|
# The Netwide Assembler is copyright (C) 1996 Simon Tatham and
|
|
# Julian Hall. All rights reserved. The software is
|
|
# redistributable under the licence given in the file "Licence"
|
|
# distributed in the NASM archive.
|
|
|
|
print STDERR "Reading insns.dat...\n";
|
|
|
|
@args = ();
|
|
undef $output;
|
|
foreach $arg ( @ARGV ) {
|
|
if ( $arg =~ /^\-/ ) {
|
|
if ( $arg =~ /^\-([adin])$/ ) {
|
|
$output = $1;
|
|
} else {
|
|
die "$0: Unknown option: ${arg}\n";
|
|
}
|
|
} else {
|
|
push (@args, $arg);
|
|
}
|
|
}
|
|
|
|
$fname = "insns.dat" unless $fname = $args[0];
|
|
open (F, $fname) || die "unable to open $fname";
|
|
|
|
$line = 0;
|
|
$insns = 0;
|
|
while (<F>) {
|
|
$line++;
|
|
next if /^\s*;/; # comments
|
|
chomp;
|
|
split;
|
|
next if $#_ == -1; # blank lines
|
|
(warn "line $line does not contain four fields\n"), next if $#_ != 3;
|
|
($formatted, $nd) = &format(@_);
|
|
if ($formatted) {
|
|
$insns++;
|
|
$aname = "aa_$_[0]";
|
|
push @$aname, $formatted;
|
|
}
|
|
if ( $_[0] =~ /cc$/ ) {
|
|
# Conditional instruction
|
|
$k_opcodes_cc{$_[0]}++;
|
|
} else {
|
|
# Unconditional instruction
|
|
$k_opcodes{$_[0]}++;
|
|
}
|
|
if ($formatted && !$nd) {
|
|
push @big, $formatted;
|
|
foreach $i (&startbyte($_[2])) {
|
|
$aname = sprintf "dd_%02X",$i;
|
|
push @$aname, $#big;
|
|
}
|
|
}
|
|
}
|
|
|
|
close F;
|
|
|
|
@opcodes = sort keys(%k_opcodes);
|
|
@opcodes_cc = sort keys(%k_opcodes_cc);
|
|
|
|
if ( !defined($output) || $output eq 'a' ) {
|
|
print STDERR "Writing insnsa.c...\n";
|
|
|
|
open A, ">insnsa.c";
|
|
|
|
print A "/* This file auto-generated from insns.dat by insns.pl" .
|
|
" - don't edit it */\n\n";
|
|
print A "#include \"nasm.h\"\n";
|
|
print A "#include \"insns.h\"\n";
|
|
print A "\n";
|
|
|
|
foreach $i (@opcodes, @opcodes_cc) {
|
|
print A "static const struct itemplate instrux_${i}[] = {\n";
|
|
$aname = "aa_$i";
|
|
foreach $j (@$aname) {
|
|
print A " $j\n";
|
|
}
|
|
print A " ITEMPLATE_END\n};\n\n";
|
|
}
|
|
print A "const struct itemplate * const nasm_instructions[] = {\n";
|
|
foreach $i (@opcodes, @opcodes_cc) {
|
|
print A " instrux_${i},\n";
|
|
}
|
|
print A "};\n";
|
|
|
|
close A;
|
|
}
|
|
|
|
if ( !defined($output) || $output eq 'd' ) {
|
|
print STDERR "Writing insnsd.c...\n";
|
|
|
|
open D, ">insnsd.c";
|
|
|
|
print D "/* This file auto-generated from insns.dat by insns.pl" .
|
|
" - don't edit it */\n\n";
|
|
print D "#include \"nasm.h\"\n";
|
|
print D "#include \"insns.h\"\n";
|
|
print D "\n";
|
|
|
|
print D "static const struct itemplate instrux[] = {\n";
|
|
foreach $j (@big) {
|
|
print D " $j\n";
|
|
}
|
|
print D " ITEMPLATE_END\n};\n\n";
|
|
|
|
for ($c=0; $c<256; $c++) {
|
|
$h = sprintf "%02X", $c;
|
|
print D "static const struct itemplate * const itable_${h}[] = {\n";
|
|
$aname = "dd_$h";
|
|
foreach $j (@$aname) {
|
|
print D " instrux + $j,\n";
|
|
}
|
|
print D " NULL\n};\n\n";
|
|
}
|
|
|
|
print D "const struct itemplate * const * const itable[] = {\n";
|
|
for ($c=0; $c<256; $c++) {
|
|
printf D " itable_%02X,\n", $c;
|
|
}
|
|
print D "};\n";
|
|
|
|
close D;
|
|
}
|
|
|
|
if ( !defined($output) || $output eq 'i' ) {
|
|
print STDERR "Writing insnsi.h...\n";
|
|
|
|
open I, ">insnsi.h";
|
|
|
|
print I "/* This file is auto-generated from insns.dat by insns.pl" .
|
|
" - don't edit it */\n\n";
|
|
print I "/* This file in included by nasm.h */\n\n";
|
|
|
|
print I "/* Instruction names */\n";
|
|
print I "enum opcode {";
|
|
$first = 1;
|
|
$maxlen = 0;
|
|
foreach $i (@opcodes, @opcodes_cc) {
|
|
print I "," if ( !$first );
|
|
$first = 0;
|
|
print I "\n\tI_${i}";
|
|
$len = length($i);
|
|
$len++ if ( $i =~ /cc$/ ); # Condition codes can be 3 characters long
|
|
$maxlen = $len if ( $len > $maxlen );
|
|
}
|
|
print I "\n};\n\n";
|
|
print I "#define MAX_INSLEN ", $maxlen, "\n";
|
|
|
|
close I;
|
|
}
|
|
|
|
if ( !defined($output) || $output eq 'n' ) {
|
|
print STDERR "Writing insnsn.c...\n";
|
|
|
|
open N, ">insnsn.c";
|
|
|
|
print N "/* This file is auto-generated from insns.dat by insns.pl" .
|
|
" - don't edit it */\n\n";
|
|
print N "/* This file in included by names.c */\n\n";
|
|
|
|
print N "static const char * const insn_names[] = {";
|
|
$first = 1;
|
|
foreach $i (@opcodes) {
|
|
print N "," if ( !$first );
|
|
$first = 0;
|
|
$ilower = $i;
|
|
$ilower =~ tr/A-Z/a-z/; # Change to lower case (Perl 4 compatible)
|
|
print N "\n\t\"${ilower}\"";
|
|
}
|
|
print N "\n};\n\n";
|
|
print N "/* Conditional instructions */\n";
|
|
print N "static const char *icn[] = {";
|
|
$first = 1;
|
|
foreach $i (@opcodes_cc) {
|
|
print N "," if ( !$first );
|
|
$first = 0;
|
|
$ilower = $i;
|
|
$ilower =~ s/cc$//; # Skip cc suffix
|
|
$ilower =~ tr/A-Z/a-z/; # Change to lower case (Perl 4 compatible)
|
|
print N "\n\t\"${ilower}\"";
|
|
}
|
|
|
|
print N "\n};\n\n";
|
|
print N "/* and the corresponding opcodes */\n";
|
|
print N "static const enum opcode ico[] = {";
|
|
$first = 1;
|
|
foreach $i (@opcodes_cc) {
|
|
print N "," if ( !$first );
|
|
$first = 0;
|
|
print N "\n\tI_$i";
|
|
}
|
|
|
|
print N "\n};\n";
|
|
|
|
close N;
|
|
}
|
|
|
|
printf STDERR "Done: %d instructions\n", $insns;
|
|
|
|
sub format {
|
|
local ($opcode, $operands, $codes, $flags) = @_;
|
|
local $num, $nd = 0;
|
|
|
|
return (undef, undef) if $operands eq "ignore";
|
|
|
|
# format the operands
|
|
$operands =~ s/:/|colon,/g;
|
|
$operands =~ s/mem(\d+)/mem|bits$1/g;
|
|
$operands =~ s/mem/memory/g;
|
|
$operands =~ s/memory_offs/mem_offs/g;
|
|
$operands =~ s/imm(\d+)/imm|bits$1/g;
|
|
$operands =~ s/imm/immediate/g;
|
|
$operands =~ s/rm(\d+)/regmem|bits$1/g;
|
|
$num = 3;
|
|
$operands = '0,0,0', $num = 0 if $operands eq 'void';
|
|
$operands .= ',0', $num-- while $operands !~ /,.*,/;
|
|
$operands =~ tr/a-z/A-Z/;
|
|
|
|
# format the flags
|
|
$flags =~ s/,/|IF_/g;
|
|
$flags =~ s/(\|IF_ND|IF_ND\|)//, $nd = 1 if $flags =~ /IF_ND/;
|
|
$flags = "IF_" . $flags;
|
|
|
|
("{I_$opcode, $num, {$operands}, \"$codes\", $flags},", $nd);
|
|
}
|
|
|
|
# Here we determine the range of possible starting bytes for a given
|
|
# instruction. We need only consider the codes:
|
|
# \1 \2 \3 mean literal bytes, of course
|
|
# \4 \5 \6 \7 mean PUSH/POP of segment registers: special case
|
|
# \10 \11 \12 mean byte plus register value
|
|
# \17 means byte zero
|
|
# \330 means byte plus condition code
|
|
# \0 or \340 mean give up and return empty set
|
|
sub startbyte {
|
|
local ($codes) = @_;
|
|
local $word, @range;
|
|
|
|
while (1) {
|
|
die "couldn't get code in '$codes'" if $codes !~ /^(\\[^\\]+)(\\.*)?$/;
|
|
$word = $1, $codes = $2;
|
|
return (hex $1) if $word =~ /^\\[123]$/ && $codes =~ /^\\x(..)/;
|
|
return (0x07, 0x17, 0x1F) if $word eq "\\4";
|
|
return (0xA1, 0xA9) if $word eq "\\5";
|
|
return (0x06, 0x0E, 0x16, 0x1E) if $word eq "\\6";
|
|
return (0xA0, 0xA8) if $word eq "\\7";
|
|
$start=hex $1, $r=8, last if $word =~ /^\\1[012]$/ && $codes =~/^\\x(..)/;
|
|
return (0) if $word eq "\\17";
|
|
$start=hex $1, $r=16, last if $word =~ /^\\330$/ && $codes =~ /^\\x(..)/;
|
|
return () if $word eq "\\0" || $word eq "\\340";
|
|
}
|
|
@range = ();
|
|
push @range, $start++ while ($r-- > 0);
|
|
@range;
|
|
}
|