-The mips port was originally written by Richard Pennington for use in
-the ellcc project. The original code was adapted by Rich Felker for
-build system and code conventions during upstream integration. It is
-licensed under the standard MIT terms.
-
-All files which have no copyright comments are original works
-Copyright © 2005-2012 Rich Felker, the main author of this library.
-The decision to exclude such comments is intentional, as it should be
-possible to carry around the complete source code on tiny storage
-media. All public header files (include/*) should be treated as Public
-Domain as they intentionally contain no content which can be covered
-by copyright. Some source modules may fall in this category as well.
-If you believe that a file is so trivial that it should be in the
-Public Domain, please contact me and, if I agree, I will explicitly
-release it from copyright.
-
-The following files are trivial, in my opinion not copyrightable in
+The mips and microblaze ports were originally written by Richard
+Pennington for use in the ellcc project. The original code was adapted
+by Rich Felker for build system and code conventions during upstream
+integration. It is licensed under the standard MIT terms.
+
+The powerpc port was also originally written by Richard Pennington,
+and later supplemented and integrated by John Spencer. It is licensed
+under the standard MIT terms.
+
+All other files which have no copyright comments are original works
+produced specifically for use as part of this library, written either
+by Rich Felker, the main author of the library, or by one or more
+contibutors listed above. Details on authorship of individual files
+can be found in the git version control history of the project. The
+omission of copyright and license comments in each file is in the
+interest of source tree size.
+
+All public header files (include/* and arch/*/bits/*) should be
+treated as Public Domain as they intentionally contain no content
+which can be covered by copyright. Some source modules may fall in
+this category as well. If you believe that a file is so trivial that
+it should be in the Public Domain, please contact the authors and
+request an explicit statement releasing it from copyright.
+
+The following files are trivial, believed not to be copyrightable in