Add minimal GNAT run time system (RTS)

Add a stripped-down version of libgnat. This is somehow comparable to
libgcc but for Ada programs. It's licensed under GPLv3 but with the
runtime library exception. So it's totally fine to link it with our
GPLv2 code and keep it under GPLv2.

Change-Id: Ie6522abf093f0a516b9ae18ddc69131bd721dc0c
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/11836
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>

19 files changed, 2400 insertions, 0 deletions

diff --git a/src/lib/gnat/COPYING.RUNTIME b/src/lib/gnat/COPYING.RUNTIME
new file mode 100644
index 0000000000..e1b3c69c17
--- /dev/null
+++ b/src/lib/gnat/COPYING.RUNTIME
@@ -0,0 +1,73 @@
+GCC RUNTIME LIBRARY EXCEPTION
+
+Version 3.1, 31 March 2009
+
+Copyright (C) 2009 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+This GCC Runtime Library Exception ("Exception") is an additional
+permission under section 7 of the GNU General Public License, version
+3 ("GPLv3"). It applies to a given file (the "Runtime Library") that
+bears a notice placed by the copyright holder of the file stating that
+the file is governed by GPLv3 along with this Exception.
+
+When you use GCC to compile a program, GCC may combine portions of
+certain GCC header files and runtime libraries with the compiled
+program. The purpose of this Exception is to allow compilation of
+non-GPL (including proprietary) programs to use, in this way, the
+header files and runtime libraries covered by this Exception.
+
+0. Definitions.
+
+A file is an "Independent Module" if it either requires the Runtime
+Library for execution after a Compilation Process, or makes use of an
+interface provided by the Runtime Library, but is not otherwise based
+on the Runtime Library.
+
+"GCC" means a version of the GNU Compiler Collection, with or without
+modifications, governed by version 3 (or a specified later version) of
+the GNU General Public License (GPL) with the option of using any
+subsequent versions published by the FSF.
+
+"GPL-compatible Software" is software whose conditions of propagation,
+modification and use would permit combination with GCC in accord with
+the license of GCC.
+
+"Target Code" refers to output from any compiler for a real or virtual
+target processor architecture, in executable form or suitable for
+input to an assembler, loader, linker and/or execution
+phase. Notwithstanding that, Target Code does not include data in any
+format that is used as a compiler intermediate representation, or used
+for producing a compiler intermediate representation.
+
+The "Compilation Process" transforms code entirely represented in
+non-intermediate languages designed for human-written code, and/or in
+Java Virtual Machine byte code, into Target Code. Thus, for example,
+use of source code generators and preprocessors need not be considered
+part of the Compilation Process, since the Compilation Process can be
+understood as starting with the output of the generators or
+preprocessors.
+
+A Compilation Process is "Eligible" if it is done using GCC, alone or
+with other GPL-compatible software, or if it is done without using any
+work based on GCC. For example, using non-GPL-compatible Software to
+optimize any GCC intermediate representations would not qualify as an
+Eligible Compilation Process.
+
+1. Grant of Additional Permission.
+
+You have permission to propagate a work of Target Code formed by
+combining the Runtime Library with Independent Modules, even if such
+propagation would otherwise violate the terms of GPLv3, provided that
+all Target Code was generated by Eligible Compilation Processes. You
+may then convey such a combination under terms of your choice,
+consistent with the licensing of the Independent Modules.
+
+2. No Weakening of GCC Copyleft.
+
+The availability of this Exception does not imply any general
+presumption that third-party software is unaffected by the copyleft
+requirements of the license of GCC.
+
diff --git a/src/lib/gnat/COPYING3 b/src/lib/gnat/COPYING3
new file mode 100644
index 0000000000..94a9ed024d
--- /dev/null
+++ b/src/lib/gnat/COPYING3
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/src/lib/gnat/Makefile.inc b/src/lib/gnat/Makefile.inc
new file mode 100644
index 0000000000..6ba274a7ef
--- /dev/null
+++ b/src/lib/gnat/Makefile.inc
@@ -0,0 +1,62 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2016 Nico Huber <nico.h@gmx.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+
+define libgnat-template
+# $1 arch
+
+additional-dirs += $$(obj)/libgnat-$(1)/adainclude
+additional-dirs += $$(obj)/libgnat-$(1)/adalib
+
+ADAFLAGS_libgnat-$(1) := \
+	--RTS=$$(obj)/libgnat-$(1)/ \
+	-gnatg \
+	-gnatpg \
+	-I$$(src)/lib/gnat/ \
+
+libgnat-$(1)-y += a-unccon.ads
+libgnat-$(1)-y += ada.ads
+libgnat-$(1)-y += g-souinf.ads
+libgnat-$(1)-y += gnat.ads
+libgnat-$(1)-y += i-c.adb
+libgnat-$(1)-y += i-c.ads
+libgnat-$(1)-y += interfac.ads
+libgnat-$(1)-y += s-atacco.ads
+libgnat-$(1)-y += s-imenne.adb
+libgnat-$(1)-y += s-imenne.ads
+libgnat-$(1)-y += s-maccod.ads
+libgnat-$(1)-y += s-parame.ads
+libgnat-$(1)-y += s-stoele.adb
+libgnat-$(1)-y += s-stoele.ads
+libgnat-$(1)-y += s-unstyp.ads
+libgnat-$(1)-y += system.ads
+
+# Copy bodies too for inlining
+$$(obj)/libgnat-$(1)/libgnat.a: $$$$(libgnat-$(1)-objs)
+	cp $$(libgnat-$(1)-srcs) $$(libgnat-$(1)-extra-specs) \
+	   $$(obj)/libgnat-$(1)/adainclude/
+	cp $$(libgnat-$(1)-alis) \
+	   $$(obj)/libgnat-$(1)/adalib/
+	rm -f $$@
+	@printf "    AR         $$(subst $$(obj)/,,$$(@))\n"
+	$$(AR_libgnat-$(1)) cr $$@ $$^
+
+endef
+
+
+$(foreach arch,$(standard-archs), \
+	$(eval $(call define_class,libgnat-$(arch),$(arch))))
+
+$(foreach arch,$(standard-archs), \
+	$(eval $(call libgnat-template,$(arch))))
diff --git a/src/lib/gnat/a-unccon.ads b/src/lib/gnat/a-unccon.ads
new file mode 100644
index 0000000000..ffa84d9fad
--- /dev/null
+++ b/src/lib/gnat/a-unccon.ads
@@ -0,0 +1,23 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--              A D A . U N C H E C K E D _ C O N V E R S I O N             --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+generic
+   type Source (<>) is limited private;
+   type Target (<>) is limited private;
+
+function Ada.Unchecked_Conversion (S : Source) return Target;
+
+pragma Pure (Unchecked_Conversion);
+pragma Import (Intrinsic, Unchecked_Conversion);
diff --git a/src/lib/gnat/ada.ads b/src/lib/gnat/ada.ads
new file mode 100644
index 0000000000..8c860110f9
--- /dev/null
+++ b/src/lib/gnat/ada.ads
@@ -0,0 +1,19 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                                  A D A                                   --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+package Ada is
+   pragma Pure;
+
+end Ada;
diff --git a/src/lib/gnat/g-souinf.ads b/src/lib/gnat/g-souinf.ads
new file mode 100644
index 0000000000..610db23371
--- /dev/null
+++ b/src/lib/gnat/g-souinf.ads
@@ -0,0 +1,92 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                     G N A T . S O U R C E _ I N F O                      --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2000-2014, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides some useful utility subprograms that provide access
+--  to source code information known at compile time. These subprograms are
+--  intrinsic operations that provide information known to the compiler in
+--  a form that can be embedded into the source program for identification
+--  and logging purposes. For example, an exception handler can print out
+--  the name of the source file in which the exception is handled.
+
+package GNAT.Source_Info is
+   pragma Preelaborate;
+   --  Note that this unit is Preelaborate, but not Pure, that's because the
+   --  functions here such as Line are clearly not pure functions, and normally
+   --  we mark intrinsic functions in a Pure unit as Pure, even though they are
+   --  imported.
+   --
+   --  Historical note: this used to be Pure, but that was when we marked all
+   --  intrinsics as not Pure, even in Pure units, so no problems arose.
+
+   function File return String with
+     Import, Convention => Intrinsic;
+   --  Return the name of the current file, not including the path information.
+   --  The result is considered to be a static string constant.
+
+   function Line return Positive with
+     Import, Convention => Intrinsic;
+   --  Return the current input line number. The result is considered to be a
+   --  static expression.
+
+   function Source_Location return String with
+     Import, Convention => Intrinsic;
+   --  Return a string literal of the form "name:line", where name is the
+   --  current source file name without path information, and line is the
+   --  current line number. In the event that instantiations are involved,
+   --  additional suffixes of the same form are appended after the separating
+   --  string " instantiated at ". The result is considered to be a static
+   --  string constant.
+
+   function Enclosing_Entity return String with
+     Import, Convention => Intrinsic;
+   --  Return the name of the current subprogram, package, task, entry or
+   --  protected subprogram. The string is in exactly the form used for the
+   --  declaration of the entity (casing and encoding conventions), and is
+   --  considered to be a static string constant. The name is fully qualified
+   --  using periods where possible (this is not always possible, notably in
+   --  the case of entities appearing in unnamed block statements.)
+   --
+   --  Note: if this function is used at the outer level of a generic package,
+   --  the string returned will be the name of the instance, not the generic
+   --  package itself. This is useful in identifying and logging information
+   --  from within generic templates.
+
+   function Compilation_Date return String with
+     Import, Convention => Intrinsic;
+   --  Returns date of compilation as a static string "mmm dd yyyy". This is
+   --  in local time form, and is exactly compatible with C macro __DATE__.
+
+   function Compilation_Time return String with
+     Import, Convention => Intrinsic;
+   --  Returns GMT time of compilation as a static string "hh:mm:ss". This is
+   --  in local time form, and is exactly compatible with C macro __TIME__.
+
+end GNAT.Source_Info;
diff --git a/src/lib/gnat/gnat.ads b/src/lib/gnat/gnat.ads
new file mode 100644
index 0000000000..a0807b656f
--- /dev/null
+++ b/src/lib/gnat/gnat.ads
@@ -0,0 +1,37 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                                 G N A T                                  --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                     Copyright (C) 1992-2014, AdaCore                     --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This is the parent package for a library of useful units provided with GNAT
+
+package GNAT is
+   pragma Pure;
+
+end GNAT;
diff --git a/src/lib/gnat/i-c.adb b/src/lib/gnat/i-c.adb
new file mode 100644
index 0000000000..6926a9eacf
--- /dev/null
+++ b/src/lib/gnat/i-c.adb
@@ -0,0 +1,73 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                         I N T E R F A C E S . C                          --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 1992-2009, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+package body Interfaces.C is
+
+   -----------------------
+   -- Is_Nul_Terminated --
+   -----------------------
+
+   --  Case of char_array
+
+   function Is_Nul_Terminated (Item : char_array) return Boolean is
+   begin
+      for J in Item'Range loop
+         if Item (J) = nul then
+            return True;
+         end if;
+      end loop;
+
+      return False;
+   end Is_Nul_Terminated;
+
+   ------------
+   -- To_Ada --
+   ------------
+
+   --  Convert char to Character
+
+   function To_Ada (Item : char) return Character is
+   begin
+      return Character'Val (char'Pos (Item));
+   end To_Ada;
+
+   ----------
+   -- To_C --
+   ----------
+
+   --  Convert Character to char
+
+   function To_C (Item : Character) return char is
+   begin
+      return char'Val (Character'Pos (Item));
+   end To_C;
+
+end Interfaces.C;
diff --git a/src/lib/gnat/i-c.ads b/src/lib/gnat/i-c.ads
new file mode 100644
index 0000000000..1403fcec80
--- /dev/null
+++ b/src/lib/gnat/i-c.ads
@@ -0,0 +1,78 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                         I N T E R F A C E S . C                          --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with System.Parameters;
+
+package Interfaces.C is
+   pragma Pure;
+
+   --  Declaration's based on C's <limits.h>
+
+   CHAR_BIT  : constant := 8;
+   SCHAR_MIN : constant := -128;
+   SCHAR_MAX : constant := 127;
+   UCHAR_MAX : constant := 255;
+
+   --  Signed and Unsigned Integers. Note that in GNAT, we have ensured that
+   --  the standard predefined Ada types correspond to the standard C types
+
+   --  Note: the Integer qualifications used in the declaration of type long
+   --  avoid ambiguities when compiling in the presence of s-auxdec.ads and
+   --  a non-private system.address type.
+
+   type int   is new Integer;
+   type short is new Short_Integer;
+   type long  is range -(2 ** (System.Parameters.long_bits - Integer'(1)))
+     .. +(2 ** (System.Parameters.long_bits - Integer'(1))) - 1;
+
+   type signed_char is range SCHAR_MIN .. SCHAR_MAX;
+   for signed_char'Size use CHAR_BIT;
+
+   type unsigned       is mod 2 ** int'Size;
+   type unsigned_short is mod 2 ** short'Size;
+   type unsigned_long  is mod 2 ** long'Size;
+
+   type unsigned_char is mod (UCHAR_MAX + 1);
+   for unsigned_char'Size use CHAR_BIT;
+
+   subtype plain_char is unsigned_char; -- ??? should be parameterized
+
+   --  Note: the Integer qualifications used in the declaration of ptrdiff_t
+   --  avoid ambiguities when compiling in the presence of s-auxdec.ads and
+   --  a non-private system.address type.
+
+   type ptrdiff_t is
+     range -(2 ** (System.Parameters.ptr_bits - Integer'(1))) ..
+           +(2 ** (System.Parameters.ptr_bits - Integer'(1)) - 1);
+
+   type size_t is mod 2 ** System.Parameters.ptr_bits;
+
+   ----------------------------
+   -- Characters and Strings --
+   ----------------------------
+
+   type char is new Character;
+
+   nul : constant char := char'First;
+
+   function To_C   (Item : Character) return char;
+   function To_Ada (Item : char)      return Character;
+
+   type char_array is array (size_t range <>) of aliased char;
+   for char_array'Component_Size use CHAR_BIT;
+
+   function Is_Nul_Terminated (Item : char_array) return Boolean;
+
+end Interfaces.C;
diff --git a/src/lib/gnat/interfac.ads b/src/lib/gnat/interfac.ads
new file mode 100644
index 0000000000..e7e196c594
--- /dev/null
+++ b/src/lib/gnat/interfac.ads
@@ -0,0 +1,161 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                           I N T E R F A C E S                            --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2002-2014, Free Software Foundation, Inc.         --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the implementation dependent sections of this file.      --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+pragma Compiler_Unit_Warning;
+
+package Interfaces is
+   pragma Pure;
+
+   --  All identifiers in this unit are implementation defined
+
+   pragma Implementation_Defined;
+
+   type Integer_8  is range -2 **  7 .. 2 **  7 - 1;
+   for Integer_8'Size use  8;
+
+   type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1;
+   for Integer_16'Size use 16;
+
+   type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1;
+   for Integer_32'Size use 32;
+
+   type Integer_64 is new Long_Long_Integer;
+   for Integer_64'Size use 64;
+   --  Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this
+   --  unit to compile when using custom target configuration files where the
+   --  maximum integer is 32 bits. This is useful for static analysis tools
+   --  such as SPARK or CodePeer. In the normal case Long_Long_Integer is
+   --  always 64-bits so we get the desired 64-bit type.
+
+   type Unsigned_8  is mod 2 ** 8;
+   for Unsigned_8'Size use  8;
+
+   type Unsigned_16 is mod 2 ** 16;
+   for Unsigned_16'Size use 16;
+
+   type Unsigned_32 is mod 2 ** 32;
+   for Unsigned_32'Size use 32;
+
+   type Unsigned_64 is mod 2 ** Long_Long_Integer'Size;
+   for Unsigned_64'Size use 64;
+   --  See comment on Integer_64 above
+
+   function Shift_Left
+     (Value  : Unsigned_8;
+      Amount : Natural) return Unsigned_8;
+
+   function Shift_Right
+     (Value  : Unsigned_8;
+      Amount : Natural) return Unsigned_8;
+
+   function Shift_Right_Arithmetic
+     (Value  : Unsigned_8;
+      Amount : Natural) return Unsigned_8;
+
+   function Rotate_Left
+     (Value  : Unsigned_8;
+      Amount : Natural) return Unsigned_8;
+
+   function Rotate_Right
+     (Value  : Unsigned_8;
+      Amount : Natural) return Unsigned_8;
+
+   function Shift_Left
+     (Value  : Unsigned_16;
+      Amount : Natural) return Unsigned_16;
+
+   function Shift_Right
+     (Value  : Unsigned_16;
+      Amount : Natural) return Unsigned_16;
+
+   function Shift_Right_Arithmetic
+     (Value  : Unsigned_16;
+      Amount : Natural) return Unsigned_16;
+
+   function Rotate_Left
+     (Value  : Unsigned_16;
+      Amount : Natural) return Unsigned_16;
+
+   function Rotate_Right
+     (Value  : Unsigned_16;
+      Amount : Natural) return Unsigned_16;
+
+   function Shift_Left
+     (Value  : Unsigned_32;
+      Amount : Natural) return Unsigned_32;
+
+   function Shift_Right
+     (Value  : Unsigned_32;
+      Amount : Natural) return Unsigned_32;
+
+   function Shift_Right_Arithmetic
+     (Value  : Unsigned_32;
+      Amount : Natural) return Unsigned_32;
+
+   function Rotate_Left
+     (Value  : Unsigned_32;
+      Amount : Natural) return Unsigned_32;
+
+   function Rotate_Right
+     (Value  : Unsigned_32;
+      Amount : Natural) return Unsigned_32;
+
+   function Shift_Left
+     (Value  : Unsigned_64;
+      Amount : Natural) return Unsigned_64;
+
+   function Shift_Right
+     (Value  : Unsigned_64;
+      Amount : Natural) return Unsigned_64;
+
+   function Shift_Right_Arithmetic
+     (Value  : Unsigned_64;
+      Amount : Natural) return Unsigned_64;
+
+   function Rotate_Left
+     (Value  : Unsigned_64;
+      Amount : Natural) return Unsigned_64;
+
+   function Rotate_Right
+     (Value  : Unsigned_64;
+      Amount : Natural) return Unsigned_64;
+
+   pragma Import (Intrinsic, Shift_Left);
+   pragma Import (Intrinsic, Shift_Right);
+   pragma Import (Intrinsic, Shift_Right_Arithmetic);
+   pragma Import (Intrinsic, Rotate_Left);
+   pragma Import (Intrinsic, Rotate_Right);
+
+end Interfaces;
diff --git a/src/lib/gnat/s-atacco.ads b/src/lib/gnat/s-atacco.ads
new file mode 100644
index 0000000000..fb6232d14a
--- /dev/null
+++ b/src/lib/gnat/s-atacco.ads
@@ -0,0 +1,63 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+-- S Y S T E M . A D D R E S S _ T O _ A C C E S S _ C O N V E R S I O N S  --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2012, Free Software Foundation, Inc.         --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+generic
+   type Object (<>) is limited private;
+
+package System.Address_To_Access_Conversions is
+   pragma Preelaborate;
+
+   pragma Compile_Time_Warning
+     (Object'Unconstrained_Array,
+      "Object is unconstrained array type" & ASCII.LF &
+      "To_Pointer results may not have bounds");
+
+   type Object_Pointer is access all Object;
+   for Object_Pointer'Size use Standard'Address_Size;
+
+   pragma No_Strict_Aliasing (Object_Pointer);
+   --  Strictly speaking, this routine should not be used to generate pointers
+   --  to other than proper values of the proper type, but in practice, this
+   --  is done all the time. This pragma stops the compiler from doing some
+   --  optimizations that may cause unexpected results based on the assumption
+   --  of no strict aliasing.
+
+   function To_Pointer (Value : Address)        return Object_Pointer;
+   function To_Address (Value : Object_Pointer) return Address;
+
+   pragma Import (Intrinsic, To_Pointer);
+   pragma Import (Intrinsic, To_Address);
+
+end System.Address_To_Access_Conversions;
diff --git a/src/lib/gnat/s-imenne.adb b/src/lib/gnat/s-imenne.adb
new file mode 100644
index 0000000000..0c82dfd54d
--- /dev/null
+++ b/src/lib/gnat/s-imenne.adb
@@ -0,0 +1,129 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                  S Y S T E M . I M G _ E N U M _ N E W                   --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 2000-2013, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+pragma Compiler_Unit_Warning;
+pragma Assertion_Policy (Statement_Assertions => Ignore);
+
+with Ada.Unchecked_Conversion;
+
+package body System.Img_Enum_New is
+
+   -------------------------
+   -- Image_Enumeration_8 --
+   -------------------------
+
+   procedure Image_Enumeration_8
+     (Pos     : Natural;
+      S       : in out String;
+      P       : out Natural;
+      Names   : String;
+      Indexes : System.Address)
+   is
+      pragma Assert (S'First = 1);
+
+      type Natural_8 is range 0 .. 2 ** 7 - 1;
+      type Index_Table is array (Natural) of Natural_8;
+      type Index_Table_Ptr is access Index_Table;
+
+      function To_Index_Table_Ptr is
+        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
+
+      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
+
+      Start : constant Natural := Natural (IndexesT (Pos));
+      Next  : constant Natural := Natural (IndexesT (Pos + 1));
+
+   begin
+      S (1 .. Next - Start) := Names (Start .. Next - 1);
+      P := Next - Start;
+   end Image_Enumeration_8;
+
+   --------------------------
+   -- Image_Enumeration_16 --
+   --------------------------
+
+   procedure Image_Enumeration_16
+     (Pos     : Natural;
+      S       : in out String;
+      P       : out Natural;
+      Names   : String;
+      Indexes : System.Address)
+   is
+      pragma Assert (S'First = 1);
+
+      type Natural_16 is range 0 .. 2 ** 15 - 1;
+      type Index_Table is array (Natural) of Natural_16;
+      type Index_Table_Ptr is access Index_Table;
+
+      function To_Index_Table_Ptr is
+        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
+
+      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
+
+      Start : constant Natural := Natural (IndexesT (Pos));
+      Next  : constant Natural := Natural (IndexesT (Pos + 1));
+
+   begin
+      S (1 .. Next - Start) := Names (Start .. Next - 1);
+      P := Next - Start;
+   end Image_Enumeration_16;
+
+   --------------------------
+   -- Image_Enumeration_32 --
+   --------------------------
+
+   procedure Image_Enumeration_32
+     (Pos     : Natural;
+      S       : in out String;
+      P       : out Natural;
+      Names   : String;
+      Indexes : System.Address)
+   is
+      pragma Assert (S'First = 1);
+
+      type Natural_32 is range 0 .. 2 ** 31 - 1;
+      type Index_Table is array (Natural) of Natural_32;
+      type Index_Table_Ptr is access Index_Table;
+
+      function To_Index_Table_Ptr is
+        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
+
+      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
+
+      Start : constant Natural := Natural (IndexesT (Pos));
+      Next  : constant Natural := Natural (IndexesT (Pos + 1));
+
+   begin
+      S (1 .. Next - Start) := Names (Start .. Next - 1);
+      P := Next - Start;
+   end Image_Enumeration_32;
+
+end System.Img_Enum_New;
diff --git a/src/lib/gnat/s-imenne.ads b/src/lib/gnat/s-imenne.ads
new file mode 100644
index 0000000000..3726720cd1
--- /dev/null
+++ b/src/lib/gnat/s-imenne.ads
@@ -0,0 +1,85 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                  S Y S T E M . I M G _ E N U M _ N E W                   --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2000-2013, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Enumeration_Type'Image for all enumeration types except those in package
+--  Standard (where we have no opportunity to build image tables), and in
+--  package System (where it is too early to start building image tables).
+--  Special routines exist for the enumeration types in these packages.
+
+--  This is the new version of the package, for use by compilers built after
+--  Nov 21st, 2007, which provides procedures that avoid using the secondary
+--  stack. The original package System.Img_Enum is maintained in the sources
+--  for bootstrapping with older versions of the compiler which expect to find
+--  functions in this package.
+
+pragma Compiler_Unit_Warning;
+
+package System.Img_Enum_New is
+   pragma Pure;
+
+   procedure Image_Enumeration_8
+     (Pos     : Natural;
+      S       : in out String;
+      P       : out Natural;
+      Names   : String;
+      Indexes : System.Address);
+   --  Used to compute Enum'Image (Str) where Enum is some enumeration type
+   --  other than those defined in package Standard. Names is a string with
+   --  a lower bound of 1 containing the characters of all the enumeration
+   --  literals concatenated together in sequence. Indexes is the address of
+   --  an array of type array (0 .. N) of Natural_8, where N is the number of
+   --  enumeration literals in the type. The Indexes values are the starting
+   --  subscript of each enumeration literal, indexed by Pos values, with an
+   --  extra entry at the end containing Names'Length + 1. The reason that
+   --  Indexes is passed by address is that the actual type is created on the
+   --  fly by the expander. The desired 'Image value is stored in S (1 .. P)
+   --  and P is set on return. The caller guarantees that S is long enough to
+   --  hold the result and that the lower bound is 1.
+
+   procedure Image_Enumeration_16
+     (Pos     : Natural;
+      S       : in out String;
+      P       : out Natural;
+      Names   : String;
+      Indexes : System.Address);
+   --  Identical to Set_Image_Enumeration_8 except that it handles types using
+   --  array (0 .. Num) of Natural_16 for the Indexes table.
+
+   procedure Image_Enumeration_32
+     (Pos     : Natural;
+      S       : in out String;
+      P       : out Natural;
+      Names   : String;
+      Indexes : System.Address);
+   --  Identical to Set_Image_Enumeration_8 except that it handles types using
+   --  array (0 .. Num) of Natural_32 for the Indexes table.
+
+end System.Img_Enum_New;
diff --git a/src/lib/gnat/s-maccod.ads b/src/lib/gnat/s-maccod.ads
new file mode 100644
index 0000000000..a95e319cb9
--- /dev/null
+++ b/src/lib/gnat/s-maccod.ads
@@ -0,0 +1,130 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                   S Y S T E M . M A C H I N E _ C O D E                  --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides machine code support, both for intrinsic machine
+--  operations, and also for machine code statements. See GNAT documentation
+--  for full details.
+
+package System.Machine_Code is
+   pragma Pure;
+
+   --  All identifiers in this unit are implementation defined
+
+   pragma Implementation_Defined;
+
+   type Asm_Input_Operand  is private;
+   type Asm_Output_Operand is private;
+   --  These types are never used directly, they are declared only so that
+   --  the calls to Asm are type correct according to Ada semantic rules.
+
+   No_Input_Operands  : constant Asm_Input_Operand;
+   No_Output_Operands : constant Asm_Output_Operand;
+
+   type Asm_Input_Operand_List  is
+     array (Integer range <>) of Asm_Input_Operand;
+
+   type Asm_Output_Operand_List is
+     array (Integer range <>) of Asm_Output_Operand;
+
+   type Asm_Insn is private;
+   --  This type is not used directly. It is declared only so that the
+   --  aggregates used in code statements are type correct by Ada rules.
+
+   procedure Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand_List;
+     Inputs   : Asm_Input_Operand_List;
+     Clobber  : String  := "";
+     Volatile : Boolean := False);
+
+   procedure Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand := No_Output_Operands;
+     Inputs   : Asm_Input_Operand_List;
+     Clobber  : String  := "";
+     Volatile : Boolean := False);
+
+   procedure Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand_List;
+     Inputs   : Asm_Input_Operand := No_Input_Operands;
+     Clobber  : String  := "";
+     Volatile : Boolean := False);
+
+   procedure Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand := No_Output_Operands;
+     Inputs   : Asm_Input_Operand  := No_Input_Operands;
+     Clobber  : String  := "";
+     Volatile : Boolean := False);
+
+   function Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand_List;
+     Inputs   : Asm_Input_Operand_List;
+     Clobber  : String  := "";
+     Volatile : Boolean := False) return Asm_Insn;
+
+   function Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand := No_Output_Operands;
+     Inputs   : Asm_Input_Operand_List;
+     Clobber  : String  := "";
+     Volatile : Boolean := False) return Asm_Insn;
+
+   function Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand_List;
+     Inputs   : Asm_Input_Operand := No_Input_Operands;
+     Clobber  : String  := "";
+     Volatile : Boolean := False) return Asm_Insn;
+
+   function Asm (
+     Template : String;
+     Outputs  : Asm_Output_Operand := No_Output_Operands;
+     Inputs   : Asm_Input_Operand  := No_Input_Operands;
+     Clobber  : String  := "";
+     Volatile : Boolean := False) return Asm_Insn;
+
+   pragma Import (Intrinsic, Asm);
+
+private
+
+   type Asm_Input_Operand  is new Integer;
+   type Asm_Output_Operand is new Integer;
+   type Asm_Insn           is new Integer;
+   --  All three of these types are dummy types, to meet the requirements of
+   --  type consistency. No values of these types are ever referenced.
+
+   No_Input_Operands  : constant Asm_Input_Operand  := 0;
+   No_Output_Operands : constant Asm_Output_Operand := 0;
+
+end System.Machine_Code;
diff --git a/src/lib/gnat/s-parame.ads b/src/lib/gnat/s-parame.ads
new file mode 100644
index 0000000000..3bb8b106da
--- /dev/null
+++ b/src/lib/gnat/s-parame.ads
@@ -0,0 +1,66 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                    S Y S T E M . P A R A M E T E R S                     --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2014, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Default version used when no target-specific version is provided
+
+--  This package defines some system dependent parameters for GNAT. These
+--  are values that are referenced by the runtime library and are therefore
+--  relevant to the target machine.
+
+--  The parameters whose value is defined in the spec are not generally
+--  expected to be changed. If they are changed, it will be necessary to
+--  recompile the run-time library.
+
+--  The parameters which are defined by functions can be changed by modifying
+--  the body of System.Parameters in file s-parame.adb. A change to this body
+--  requires only rebinding and relinking of the application.
+
+--  Note: do not introduce any pragma Inline statements into this unit, since
+--  otherwise the relinking and rebinding capability would be deactivated.
+
+pragma Compiler_Unit_Warning;
+
+package System.Parameters is
+   pragma Pure;
+
+   ----------------------------------------------
+   -- Characteristics of types in Interfaces.C --
+   ----------------------------------------------
+
+   long_bits : constant := Long_Integer'Size;
+   --  Number of bits in type long and unsigned_long. The normal convention
+   --  is that this is the same as type Long_Integer, but this may not be true
+   --  of all targets.
+
+   ptr_bits  : constant := Standard'Address_Size;
+   --  Number of bits in Interfaces.C pointers, normally a standard address
+
+end System.Parameters;
diff --git a/src/lib/gnat/s-stoele.adb b/src/lib/gnat/s-stoele.adb
new file mode 100644
index 0000000000..1cb5f92a23
--- /dev/null
+++ b/src/lib/gnat/s-stoele.adb
@@ -0,0 +1,131 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--               S Y S T E M . S T O R A G E _ E L E M E N T S              --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 1992-2014, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+pragma Compiler_Unit_Warning;
+
+with Ada.Unchecked_Conversion;
+
+package body System.Storage_Elements is
+
+   pragma Suppress (All_Checks);
+
+   --  Conversion to/from address
+
+   --  Note qualification below of To_Address to avoid ambiguities systems
+   --  where Address is a visible integer type.
+
+   function To_Address is
+     new Ada.Unchecked_Conversion (Storage_Offset, Address);
+   function To_Offset  is
+     new Ada.Unchecked_Conversion (Address, Storage_Offset);
+
+   --  Conversion to/from integers
+
+   --  These functions must be place first because they are inlined_always
+   --  and are used and inlined in other subprograms defined in this unit.
+
+   ----------------
+   -- To_Address --
+   ----------------
+
+   function To_Address (Value : Integer_Address) return Address is
+   begin
+      return Address (Value);
+   end To_Address;
+
+   ----------------
+   -- To_Integer --
+   ----------------
+
+   function To_Integer (Value : Address) return Integer_Address is
+   begin
+      return Integer_Address (Value);
+   end To_Integer;
+
+   --  Address arithmetic
+
+   ---------
+   -- "+" --
+   ---------
+
+   function "+" (Left : Address; Right : Storage_Offset) return Address is
+   begin
+      return Storage_Elements.To_Address
+        (To_Integer (Left) + To_Integer (To_Address (Right)));
+   end "+";
+
+   function "+" (Left : Storage_Offset; Right : Address) return Address is
+   begin
+      return Storage_Elements.To_Address
+        (To_Integer (To_Address (Left)) + To_Integer (Right));
+   end "+";
+
+   ---------
+   -- "-" --
+   ---------
+
+   function "-" (Left : Address; Right : Storage_Offset) return Address is
+   begin
+      return Storage_Elements.To_Address
+        (To_Integer (Left) - To_Integer (To_Address (Right)));
+   end "-";
+
+   function "-" (Left, Right : Address) return Storage_Offset is
+   begin
+      return To_Offset (Storage_Elements.To_Address
+                         (To_Integer (Left) - To_Integer (Right)));
+   end "-";
+
+   -----------
+   -- "mod" --
+   -----------
+
+   function "mod"
+     (Left  : Address;
+      Right : Storage_Offset) return Storage_Offset
+   is
+   begin
+      if Right > 0 then
+         return Storage_Offset
+           (To_Integer (Left) mod Integer_Address (Right));
+
+         --  The negative case makes no sense since it is a case of a mod where
+         --  the left argument is unsigned and the right argument is signed. In
+         --  accordance with the (spirit of the) permission of RM 13.7.1(16),
+         --  we raise CE, and also include the zero case here. Yes, the RM says
+         --  PE, but this really is so obviously more like a constraint error.
+
+      else
+         raise Constraint_Error;
+      end if;
+   end "mod";
+
+end System.Storage_Elements;
diff --git a/src/lib/gnat/s-stoele.ads b/src/lib/gnat/s-stoele.ads
new file mode 100644
index 0000000000..bf773cb03d
--- /dev/null
+++ b/src/lib/gnat/s-stoele.ads
@@ -0,0 +1,117 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--               S Y S T E M . S T O R A G E _ E L E M E N T S              --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2002-2013, Free Software Foundation, Inc.         --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the implementation dependent sections of this file.      --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Warning: declarations in this package are ambiguous with respect to the
+--  extra declarations that can be introduced into System using Extend_System.
+--  It is a good idea to avoid use clauses for this package.
+
+pragma Compiler_Unit_Warning;
+
+package System.Storage_Elements is
+   pragma Pure;
+   --  Note that we take advantage of the implementation permission to make
+   --  this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada 2005,
+   --  this is Pure in any case (AI-362).
+
+   --  We also add the pragma Pure_Function to the operations in this package,
+   --  because otherwise functions with parameters derived from Address are
+   --  treated as non-pure by the back-end (see exp_ch6.adb). This is because
+   --  in many cases such a parameter is used to hide read/out access to
+   --  objects, and it would be unsafe to treat such functions as pure.
+
+   type Storage_Offset is range
+     -(2 ** (Integer'(Standard'Address_Size) - 1)) ..
+     +(2 ** (Integer'(Standard'Address_Size) - 1)) - Long_Long_Integer'(1);
+   --  Note: the reason for the Long_Long_Integer qualification here is to
+   --  avoid a bogus ambiguity when this unit is analyzed in an rtsfind
+   --  context. It may be possible to remove this in the future, but it is
+   --  certainly harmless in any case ???
+
+   subtype Storage_Count is Storage_Offset range 0 .. Storage_Offset'Last;
+
+   type Storage_Element is mod 2 ** Storage_Unit;
+   for Storage_Element'Size use Storage_Unit;
+
+   pragma Universal_Aliasing (Storage_Element);
+   --  This type is used by the expander to implement aggregate copy
+
+   type Storage_Array is
+     array (Storage_Offset range <>) of aliased Storage_Element;
+   for Storage_Array'Component_Size use Storage_Unit;
+
+   --  Address arithmetic
+
+   function "+" (Left : Address; Right : Storage_Offset) return Address;
+   pragma Convention (Intrinsic, "+");
+   pragma Inline_Always ("+");
+   pragma Pure_Function ("+");
+
+   function "+" (Left : Storage_Offset; Right : Address) return Address;
+   pragma Convention (Intrinsic, "+");
+   pragma Inline_Always ("+");
+   pragma Pure_Function ("+");
+
+   function "-" (Left : Address; Right : Storage_Offset) return Address;
+   pragma Convention (Intrinsic, "-");
+   pragma Inline_Always ("-");
+   pragma Pure_Function ("-");
+
+   function "-" (Left, Right : Address) return Storage_Offset;
+   pragma Convention (Intrinsic, "-");
+   pragma Inline_Always ("-");
+   pragma Pure_Function ("-");
+
+   function "mod"
+     (Left  : Address;
+      Right : Storage_Offset) return  Storage_Offset;
+   pragma Convention (Intrinsic, "mod");
+   pragma Inline_Always ("mod");
+   pragma Pure_Function ("mod");
+
+   --  Conversion to/from integers
+
+   type Integer_Address is mod Memory_Size;
+
+   function To_Address (Value : Integer_Address) return Address;
+   pragma Convention (Intrinsic, To_Address);
+   pragma Inline_Always (To_Address);
+   pragma Pure_Function (To_Address);
+
+   function To_Integer (Value : Address) return Integer_Address;
+   pragma Convention (Intrinsic, To_Integer);
+   pragma Inline_Always (To_Integer);
+   pragma Pure_Function (To_Integer);
+
+end System.Storage_Elements;
diff --git a/src/lib/gnat/s-unstyp.ads b/src/lib/gnat/s-unstyp.ads
new file mode 100644
index 0000000000..9eefc15b59
--- /dev/null
+++ b/src/lib/gnat/s-unstyp.ads
@@ -0,0 +1,211 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                          GNAT RUN-TIME COMPONENTS                        --
+--                                                                          --
+--                S Y S T E M . U N S I G N E D _ T Y P E S                 --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2014, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package contains definitions of standard unsigned types that
+--  correspond in size to the standard signed types declared in Standard,
+--  and (unlike the types in Interfaces) have corresponding names. It
+--  also contains some related definitions for other specialized types
+--  used by the compiler in connection with packed array types.
+
+pragma Compiler_Unit_Warning;
+
+package System.Unsigned_Types is
+   pragma Pure;
+
+   type Short_Short_Unsigned is mod 2 ** Short_Short_Integer'Size;
+   type Short_Unsigned       is mod 2 ** Short_Integer'Size;
+   type Unsigned             is mod 2 ** Integer'Size;
+   type Long_Unsigned        is mod 2 ** Long_Integer'Size;
+   type Long_Long_Unsigned   is mod 2 ** Long_Long_Integer'Size;
+
+   type Float_Unsigned       is mod 2 ** Float'Size;
+   --  Used in the implementation of Is_Negative intrinsic (see Exp_Intr)
+
+   type Packed_Byte is mod 2 ** 8;
+   pragma Universal_Aliasing (Packed_Byte);
+   for Packed_Byte'Size use 8;
+   --  Component type for Packed_Bytes1, Packed_Bytes2 and Packed_Byte4 arrays.
+   --  As this type is used by the compiler to implement operations on user
+   --  packed array, it needs to be able to alias any type.
+
+   type Packed_Bytes1 is array (Natural range <>) of aliased Packed_Byte;
+   for Packed_Bytes1'Alignment use 1;
+   for Packed_Bytes1'Component_Size use Packed_Byte'Size;
+   --  This is the type used to implement packed arrays where no alignment
+   --  is required. This includes the cases of 1,2,4 (where we use direct
+   --  masking operations), and all odd component sizes (where the clusters
+   --  are not aligned anyway, see, e.g. System.Pack_07 in file s-pack07
+   --  for details.
+
+   type Packed_Bytes2 is new Packed_Bytes1;
+   for Packed_Bytes2'Alignment use Integer'Min (2, Standard'Maximum_Alignment);
+   --  This is the type used to implement packed arrays where an alignment
+   --  of 2 (is possible) is helpful for maximum efficiency of the get and
+   --  set routines in the corresponding library unit. This is true of all
+   --  component sizes that are even but not divisible by 4 (other than 2 for
+   --  which we use direct masking operations). In such cases, the clusters
+   --  can be assumed to be 2-byte aligned if the array is aligned. See for
+   --  example System.Pack_10 in file s-pack10).
+
+   type Packed_Bytes4 is new Packed_Bytes1;
+   for Packed_Bytes4'Alignment use Integer'Min (4, Standard'Maximum_Alignment);
+   --  This is the type used to implement packed arrays where an alignment
+   --  of 4 (if possible) is helpful for maximum efficiency of the get and
+   --  set routines in the corresponding library unit. This is true of all
+   --  component sizes that are divisible by 4 (other than powers of 2, which
+   --  are either handled by direct masking or not packed at all). In such
+   --  cases the clusters can be assumed to be 4-byte aligned if the array
+   --  is aligned (see System.Pack_12 in file s-pack12 as an example).
+
+   type Bits_1 is mod 2**1;
+   type Bits_2 is mod 2**2;
+   type Bits_4 is mod 2**4;
+   --  Types used for packed array conversions
+
+   subtype Bytes_F is Packed_Bytes4 (1 .. Float'Size / 8);
+   --  Type used in implementation of Is_Negative intrinsic (see Exp_Intr)
+
+   function Shift_Left
+     (Value  : Short_Short_Unsigned;
+      Amount : Natural) return Short_Short_Unsigned;
+
+   function Shift_Right
+     (Value  : Short_Short_Unsigned;
+      Amount : Natural) return Short_Short_Unsigned;
+
+   function Shift_Right_Arithmetic
+     (Value  : Short_Short_Unsigned;
+      Amount : Natural) return Short_Short_Unsigned;
+
+   function Rotate_Left
+     (Value  : Short_Short_Unsigned;
+      Amount : Natural) return Short_Short_Unsigned;
+
+   function Rotate_Right
+     (Value  : Short_Short_Unsigned;
+      Amount : Natural) return Short_Short_Unsigned;
+
+   function Shift_Left
+     (Value  : Short_Unsigned;
+      Amount : Natural) return Short_Unsigned;
+
+   function Shift_Right
+     (Value  : Short_Unsigned;
+      Amount : Natural) return Short_Unsigned;
+
+   function Shift_Right_Arithmetic
+     (Value  : Short_Unsigned;
+      Amount : Natural) return Short_Unsigned;
+
+   function Rotate_Left
+     (Value  : Short_Unsigned;
+      Amount : Natural) return Short_Unsigned;
+
+   function Rotate_Right
+     (Value  : Short_Unsigned;
+      Amount : Natural) return Short_Unsigned;
+
+   function Shift_Left
+     (Value  : Unsigned;
+      Amount : Natural) return Unsigned;
+
+   function Shift_Right
+     (Value  : Unsigned;
+      Amount : Natural) return Unsigned;
+
+   function Shift_Right_Arithmetic
+     (Value  : Unsigned;
+      Amount : Natural) return Unsigned;
+
+   function Rotate_Left
+     (Value  : Unsigned;
+      Amount : Natural) return Unsigned;
+
+   function Rotate_Right
+     (Value  : Unsigned;
+      Amount : Natural) return Unsigned;
+
+   function Shift_Left
+     (Value  : Long_Unsigned;
+      Amount : Natural) return Long_Unsigned;
+
+   function Shift_Right
+     (Value  : Long_Unsigned;
+      Amount : Natural) return Long_Unsigned;
+
+   function Shift_Right_Arithmetic
+     (Value  : Long_Unsigned;
+      Amount : Natural) return Long_Unsigned;
+
+   function Rotate_Left
+     (Value  : Long_Unsigned;
+      Amount : Natural) return Long_Unsigned;
+
+   function Rotate_Right
+     (Value  : Long_Unsigned;
+      Amount : Natural) return Long_Unsigned;
+
+   function Shift_Left
+     (Value  : Long_Long_Unsigned;
+      Amount : Natural) return Long_Long_Unsigned;
+
+   function Shift_Right
+     (Value  : Long_Long_Unsigned;
+      Amount : Natural) return Long_Long_Unsigned;
+
+   function Shift_Right_Arithmetic
+     (Value  : Long_Long_Unsigned;
+      Amount : Natural) return Long_Long_Unsigned;
+
+   function Rotate_Left
+     (Value  : Long_Long_Unsigned;
+      Amount : Natural) return Long_Long_Unsigned;
+
+   function Rotate_Right
+     (Value  : Long_Long_Unsigned;
+      Amount : Natural) return Long_Long_Unsigned;
+
+   pragma Import (Intrinsic, Shift_Left);
+   pragma Import (Intrinsic, Shift_Right);
+   pragma Import (Intrinsic, Shift_Right_Arithmetic);
+   pragma Import (Intrinsic, Rotate_Left);
+   pragma Import (Intrinsic, Rotate_Right);
+
+   --  The following definitions are obsolescent. They were needed by the
+   --  previous version of the compiler and runtime, but are not needed
+   --  by the current version. We retain them to help with bootstrap path
+   --  problems. Also they seem harmless, and if any user programs have
+   --  been using these types, why discombobulate them?
+
+   subtype Packed_Bytes           is Packed_Bytes4;
+   subtype Packed_Bytes_Unaligned is Packed_Bytes1;
+
+end System.Unsigned_Types;
diff --git a/src/lib/gnat/system.ads b/src/lib/gnat/system.ads
new file mode 100644
index 0000000000..aed5592f73
--- /dev/null
+++ b/src/lib/gnat/system.ads
@@ -0,0 +1,176 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                        GNAT RUN-TIME COMPONENTS                          --
+--                                                                          --
+--                               S Y S T E M                                --
+--                                                                          --
+--                                 S p e c                                  --
+--                              (LSH Version)                               --
+--                                                                          --
+--          Copyright (C) 1992-2014, Free Software Foundation, Inc.         --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+pragma Restrictions (No_Exception_Propagation);
+pragma Restrictions (No_Exception_Registration);
+
+pragma Restrictions (No_Implicit_Dynamic_Code);
+pragma Restrictions (No_Finalization);
+pragma Restrictions (No_Tasking);
+
+package System is
+   pragma Pure;
+   --  Note that we take advantage of the implementation permission to make
+   --  this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
+   --  2005, this is Pure in any case (AI-362).
+
+   pragma No_Elaboration_Code_All;
+   --  Allow the use of that restriction in units that WITH this unit
+
+   type Name is (SYSTEM_NAME_GNAT);
+   System_Name : constant Name := SYSTEM_NAME_GNAT;
+
+   --  System-Dependent Named Numbers
+
+   Min_Int               : constant := Long_Long_Integer'First;
+   Max_Int               : constant := Long_Long_Integer'Last;
+
+   Max_Binary_Modulus    : constant := 2 ** Long_Long_Integer'Size;
+   Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1;
+
+   Max_Base_Digits       : constant := Long_Long_Float'Digits;
+   Max_Digits            : constant := Long_Long_Float'Digits;
+
+   Max_Mantissa          : constant := 63;
+   Fine_Delta            : constant := 2.0 ** (-Max_Mantissa);
+
+   Tick                  : constant := 0.01;
+
+   --  Storage-related Declarations
+
+   type Address is private;
+   --  Note that we do NOT add pragma Preelaborable_Initialization in this
+   --  version of System, since it is used for the compiler only, and typical
+   --  earlier bootstrap compilers don't support this pragma. We don't need
+   --  it in this context, so there is no problem in omitting it.
+   Null_Address : constant Address;
+
+   Storage_Unit : constant := Standard'Storage_Unit;
+   Word_Size    : constant := Standard'Word_Size;
+   Memory_Size  : constant := 2 ** Standard'Address_Size;
+
+   --  Address comparison
+
+   function "<"  (Left, Right : Address) return Boolean;
+   function "<=" (Left, Right : Address) return Boolean;
+   function ">"  (Left, Right : Address) return Boolean;
+   function ">=" (Left, Right : Address) return Boolean;
+   function "="  (Left, Right : Address) return Boolean;
+
+   pragma Import (Intrinsic, "<");
+   pragma Import (Intrinsic, "<=");
+   pragma Import (Intrinsic, ">");
+   pragma Import (Intrinsic, ">=");
+   pragma Import (Intrinsic, "=");
+
+   --  Other System-Dependent Declarations
+
+   type Bit_Order is (High_Order_First, Low_Order_First);
+   Default_Bit_Order : constant Bit_Order :=
+                         Bit_Order'Val (Standard'Default_Bit_Order);
+   pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
+
+   --  Priority-related Declarations (RM D.1)
+
+   Max_Priority           : constant Positive := 30;
+   Max_Interrupt_Priority : constant Positive := 31;
+
+   subtype Any_Priority       is Integer      range  0 .. 31;
+   subtype Priority           is Any_Priority range  0 .. 30;
+   subtype Interrupt_Priority is Any_Priority range 31 .. 31;
+
+   Default_Priority : constant Priority := 15;
+
+private
+
+   Run_Time_Name : constant String := "coreboot Zero Footprint Run Time";
+
+   type Address is mod Memory_Size;
+   Null_Address : constant Address := 0;
+
+   --------------------------------------
+   -- System Implementation Parameters --
+   --------------------------------------
+
+   --  These parameters provide information about the target that is used by
+   --  the compiler. They are in the private part of System, where they can be
+   --  accessed using the special circuitry in the Targparm unit whose source
+   --  should be consulted for more detailed descriptions of the individual
+   --  switch values.
+
+   --  This version of system.ads is used only for building the compiler.
+   --  We really ought to use the proper target system (i.e. the one that
+   --  corresponds to the host for the compiler), but that causes as yet
+   --  unsolved makefile problems. For the most part the setting of these
+   --  parameters is not too critical for the compiler version (e.g. we
+   --  do not use floating-point anyway in the compiler).
+
+   AAMP                      : constant Boolean := False;
+   Backend_Divide_Checks     : constant Boolean := False;
+   Backend_Overflow_Checks   : constant Boolean := True;
+   Command_Line_Args         : constant Boolean := False;
+   Configurable_Run_Time     : constant Boolean := True;
+   Denorm                    : constant Boolean := True;
+   Duration_32_Bits          : constant Boolean := False;
+   Exit_Status_Supported     : constant Boolean := False;
+   Fractional_Fixed_Ops      : constant Boolean := False;
+   Frontend_Layout           : constant Boolean := False;
+   Machine_Overflows         : constant Boolean := False;
+   Machine_Rounds            : constant Boolean := True;
+   Preallocated_Stacks       : constant Boolean := False;
+   Signed_Zeros              : constant Boolean := True;
+   Stack_Check_Default       : constant Boolean := False;
+   Stack_Check_Probes        : constant Boolean := False;
+   Stack_Check_Limits        : constant Boolean := False;
+   Support_Aggregates        : constant Boolean := True;
+   Support_Composite_Assign  : constant Boolean := True;
+   Support_Composite_Compare : constant Boolean := True;
+   Support_Long_Shifts       : constant Boolean := True;
+   Always_Compatible_Rep     : constant Boolean := True;
+   Suppress_Standard_Library : constant Boolean := True;
+   Use_Ada_Main_Program_Name : constant Boolean := False;
+   ZCX_By_Default            : constant Boolean := False;
+
+   --  Obsolete entries, to be removed eventually (bootstrap issues)
+
+   Front_End_ZCX_Support     : constant Boolean := False;
+   High_Integrity_Mode       : constant Boolean := False;
+   Long_Shifts_Inlined       : constant Boolean := True;
+   Functions_Return_By_DSP   : constant Boolean := False;
+   Support_64_Bit_Divides    : constant Boolean := True;
+   GCC_ZCX_Support           : constant Boolean := False;
+
+end System;