Licensing and the newlib dir

[Henderson, Stuart]

Hi,
COPYING.NEWLIB says:
"The newlib subdirectory is a collection of software from several sources.

Each file may have its own copyright/license that is embedded in the source
file.  Unless otherwise noted in the body of the source file(s), the following copyright
notices will apply to the contents of the newlib subdirectory: "

However, if a file has no copyright notice or license information, how are you supposed to correlate that file to a particular license or copyright holder?

For instance, a lot of the crt files:
newlib/libc/sys/sysnec810/crt0.S
newlib/libc/sys/d10v/crt0.S
newlib/libc/sys/sh/crt0.S
newlib/libc/sys/sysmec/crt0.S
newlib/libc/sys/h8300hms/crt0.S
newlib/libc/sys/arc/crt0.S
newlib/libc/sys/sparc64/crt0.S
newlib/libc/sys/arm/crt0.S
newlib/libc/sys/sysvnecv70/crt0.S
newlib/libc/sys/sysnecv850/crt0.S
etc
have nothing in them to suggest a license or copyright holder.

Do they default to the RedHat BSD license?   If so, is this the 2 or 3 clause BSD license?

Apologies if this is explained already.

Thanks,
Stu