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perlasm/arm-xlate.pl update (fix end-less loop and prepare for 32-bit iOS).

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(Imported from upstream's 7b644df899d0c818488686affc0bfe2dfdd0d0c2)

Looking at update_gypi_and_asm.py with git diff -w, the only differences seem
to be that .asciz fixed a bug where a space after a ',' got swallowed (sigh).

BUG=338886

Change-Id: Ib52296f4a62bc6f892a0d4ee7367493a8c639a3b
Reviewed-on: https://boringssl-review.googlesource.com/4480
Reviewed-by: Adam Langley <agl@google.com>
This commit is contained in:
David Benjamin 2015-04-20 17:18:10 -04:00 committed by Adam Langley
parent 1022dd3d52
commit 15a08fcca2
1 changed files with 49 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
crypto/perlasm/arm-xlate.pl
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@ -18,6 +18,32 @@ my $arch = sub {
if ($flavour =~ /linux/) { ".arch\t".join(',',@_); }
else { ""; }
};
my $fpu = sub {
if ($flavour =~ /linux/) { ".fpu\t".join(',',@_); }
else { ""; }
};
my $hidden = sub {
if ($flavour =~ /ios/) { ".private_extern\t".join(',',@_); }
else { ".hidden\t".join(',',@_); }
};
my $comm = sub {
my @args = split(/,\s*/,shift);
my $name = @args[0];
my $global = \$GLOBALS{$name};
my $ret;
if ($flavour =~ /ios32/) {
$ret = ".comm\t_$name,@args[1]\n";
$ret .= ".non_lazy_symbol_pointer\n";
$ret .= "$name:\n";
$ret .= ".indirect_symbol\t_$name\n";
$ret .= ".long\t0";
$name = "_$name";
} else { $ret = ".comm\t".join(',',@args); }
$$global = $name;
$ret;
};
my $globl = sub {
my $name = shift;
my $global = \$GLOBALS{$name};
@ -64,44 +90,43 @@ sub range {
join(",",map("$r$_$sfx",($start..$end)));
}
sub parse_args {
sub expand_line {
my $line = shift;
my @ret = ();
pos($line)=0;
while (1) {
if ($line =~ m/\G\[/gc) {
$line =~ m/\G([^\]]+\][^,]*)\s*/g;
push @ret,"[$1";
while ($line =~ m/\G[^@\/\{\"]*/g) {
if ($line =~ m/\G(@|\/\/|$)/gc) {
last;
}
elsif ($line =~ m/\G\{/gc) {
$line =~ m/\G([^\}]+\}[^,]*)\s*/g;
my $arg = $1;
$arg =~ s/([rdqv])([0-9]+)([^\-]*)\-\1([0-9]+)\3/range($1,$3,$2,$4)/ge;
push @ret,"{$arg";
my $saved_pos = pos($line);
$line =~ s/\G([rdqv])([0-9]+)([^\-]*)\-\1([0-9]+)\3/range($1,$3,$2,$4)/e;
pos($line) = $saved_pos;
$line =~ m/\G[^\}]*\}/g;
}
elsif ($line =~ m/\G\"/gc) {
$line =~ m/\G[^\"]*\"/g;
}
elsif ($line =~ m/\G([^,]+)\s*/g) {
push @ret,$1;
}
last if ($line =~ m/\G$/gc);
$line =~ s/\b(\w+)/$GLOBALS{$1} or $1/ge;
$line =~ m/\G,\s*/g;
}
map {my $s=$_;$s=~s/\b(\w+)/$GLOBALS{$1} or $1/ge;$s} @ret;
return $line;
}
while($line=<>) {
if ($line =~ m/^\s*(#|@|\/\/)/) { print $line; next; }
$line =~ s|/\*.*\*/||; # get rid of C-style comments...
$line =~ s|^\s+||; # ... and skip white spaces in beginning...
$line =~ s|\s+$||; # ... and at the end
{
$line =~ s|[\b\.]L(\w+)|L$1|g; # common denominator for Locallabel
$line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels);
$line =~ s|[\b\.]L(\w{2,})|L$1|g; # common denominator for Locallabel
$line =~ s|\bL(\w{2,})|\.L$1|g if ($dotinlocallabels);
}
{
@ -112,24 +137,24 @@ while($line=<>) {
}
}
if ($line !~ m/^#/o) {
$line =~ s|^\s*(\.?)(\S+)\s*||o;
if ($line !~ m/^[#@]/) {
$line =~ s|^\s*(\.?)(\S+)\s*||;
my $c = $1; $c = "\t" if ($c eq "");
my $mnemonic = $2;
my $opcode;
if ($mnemonic =~ m/([^\.]+)\.([^\.]+)/o) {
if ($mnemonic =~ m/([^\.]+)\.([^\.]+)/) {
$opcode = eval("\$$1_$2");
} else {
$opcode = eval("\$$mnemonic");
}
my @args=parse_args($line);
my $arg=expand_line($line);
if (ref($opcode) eq 'CODE') {
$line = &$opcode(@args);
$line = &$opcode($arg);
} elsif ($mnemonic) {
$line = $c.$mnemonic;
$line.= "\t".join(',',@args) if ($#args>=0);
$line.= "\t$arg" if ($arg);
}
}