my $self = shift;
my $sz = shift;
- # silently convert all EAs to 64-bit, required for elder GNU
- # assembler and results in more compact code
- $self->{index} =~ s/^[er](.?[0-9xp])[d]?$/r\1/;
- $self->{base} =~ s/^[er](.?[0-9xp])[d]?$/r\1/;
+ # Silently convert all EAs to 64-bit. This is required for
+ # elder GNU assembler and results in more compact code,
+ # *but* most importantly AES module depends on this feature!
+ $self->{index} =~ s/^[er](.?[0-9xpi])[d]?$/r\1/;
+ $self->{base} =~ s/^[er](.?[0-9xpi])[d]?$/r\1/;
+
if (!$masm) {
# Solaris /usr/ccs/bin/as can't handle multiplications
# in $self->{label}
# arguments passed to callee, *but* not less than 4! This means that
# upon function entry point 5th argument resides at 40(%rsp), as well
# as that 32 bytes from 8(%rsp) can always be used as temporal
-# storage [without allocating a frame].
+# storage [without allocating a frame]. One can actually argue that
+# one can assume a "red zone" above stack pointer under Win64 as well.
+# Point is that at apparently no occasion Windows kernel would alter
+# the area above user stack pointer in true asynchronous manner...
#
# All the above means that if assembler programmer adheres to Unix
# register and stack layout, but disregards the "red zone" existense,