Initial commit

Adding work done so far.

62 files changed, 3091 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e14702f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+.*
+!.gitignore
+
+# Qt stuff
+*.pro.user*
+*.qbs.user*
+
+# Common test directory
+test_dir
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f223231
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "compiler/crosstool-ng"]
+	path = compiler/crosstool-ng
+	url = https://github.com/crosstool-ng/crosstool-ng
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..9cecc1d
--- /dev/null
+++ b/LICENSE
@@ -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:
+
+    {project}  Copyright (C) {year}  {fullname}
+    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/README.md b/README.md
new file mode 100644
index 0000000..bb60441
--- /dev/null
+++ b/README.md
@@ -0,0 +1,45 @@
+QtMips
+======
+MIPS CPU simulator for education purposes.
+
+Dependencies
+------------
+* Qt 5 (version 4 is not tested but it might work)
+* libelf
+
+Compilation
+-----------
+To compile whole project just run these commands:
+```
+qmake /path/to/qtmips
+make
+```
+Where `/path/to/qtmips` is path to this project root.
+
+Running
+-------
+Because simulator it self is implemented as library you need to have that library
+in common path where loader can found it. Which is not commonly a case, so you can
+also run it using this command (in case of cli version, gui version is the same)
+```
+LD_LIBRARY_PATH=qtmips_machine qtmips_cli/qtmips_cli
+```
+
+Tests
+-----
+There are two types of tests in QtMips. One type are unit tests for simulator it
+self and second one are integration tests with command line client and real
+compiled elf binaries. All these tests can be executed using script
+`tests/run-all.sh` or one by one by running respective `test.sh` scripts.
+
+Source files for unit tests can be found in path `qtmips_machine/tests` and
+integration tests are located in `tests` directory.
+
+Not implemented features
+------------------------
+These are features that are not implemented and are not currently being planned as
+being so.
+
+* Privileged instructions and all features dependent on it
+* Coprocessors (so no floating point unit nor any other type)
+* Peripherals
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..5827fe0
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,4 @@
+* Firm endianity support
+* Gui
+* Full unprivileged instructions support
+* Windows support
diff --git a/compiler/compile.sh b/compiler/compile.sh
new file mode 100755
index 0000000..2fb5f1d
--- /dev/null
+++ b/compiler/compile.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+# This script compiles compilation tools for mips to be used with qtmips
+set -e
+
+INST_PREFIX="$(pwd)"
+
+INST_CT_PREFIX="$INST_PREFIX/ct-ng"
+mkdir -p "$INST_CT_PREFIX"
+
+# First update git submodule
+pushd "$(dirname "$0")" >/dev/null
+git submodule update crosstool-ng
+
+pushd crosstool-ng >/dev/null
+
+# Now compile it
+# TODO don't compile it in place?
+./bootstrap
+./configure --prefix="$INST_CT_PREFIX"
+make
+make install
+# TODO do cleanups?
+
+popd >/dev/null
+
+popd >/dev/null
+
+# Copy configuration
+cp "$(dirname "$0")/config" ct-ng/.config
+
+pushd ct-ng >/dev/null
+
+# And compile
+./bin/ct-ng oldconfig
+CT_PREFIX="$INST_PREFIX" ./bin/ct-ng build
+
+popd >/dev/null
+
+# Cleanup installed crosstool-ng
+rm -rf ct-ng
diff --git a/compiler/config b/compiler/config
new file mode 100644
index 0000000..3e135f0
--- /dev/null
+++ b/compiler/config
@@ -0,0 +1,461 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Crosstool-NG Configuration
+#
+CT_CONFIGURE_has_static_link=y
+CT_CONFIGURE_has_wget=y
+CT_CONFIGURE_has_curl=y
+CT_CONFIGURE_has_stat_flavor_GNU=y
+CT_CONFIGURE_has_make_3_81_or_newer=y
+CT_CONFIGURE_has_libtool_2_4_or_newer=y
+CT_CONFIGURE_has_libtoolize_2_4_or_newer=y
+CT_CONFIGURE_has_autoconf_2_63_or_newer=y
+CT_CONFIGURE_has_autoreconf_2_63_or_newer=y
+CT_CONFIGURE_has_automake_1_15_or_newer=y
+CT_CONFIGURE_has_gnu_m4_1_4_12_or_newer=y
+CT_CONFIGURE_has_svn=y
+CT_CONFIGURE_has_git=y
+CT_MODULES=y
+
+#
+# Paths and misc options
+#
+
+#
+# crosstool-NG behavior
+#
+# CT_OBSOLETE is not set
+# CT_EXPERIMENTAL is not set
+# CT_DEBUG_CT is not set
+
+#
+# Paths
+#
+CT_LOCAL_TARBALLS_DIR="${HOME}/src"
+CT_SAVE_TARBALLS=y
+CT_WORK_DIR="${CT_TOP_DIR}/.build"
+CT_BUILD_TOP_DIR="${CT_WORK_DIR}/${CT_HOST:+HOST-${CT_HOST}/}${CT_TARGET}"
+CT_PREFIX_DIR="${CT_PREFIX:-${HOME}/x-tools}/${CT_HOST:+HOST-${CT_HOST}/}${CT_TARGET}"
+CT_RM_RF_PREFIX_DIR=y
+CT_REMOVE_DOCS=y
+CT_PREFIX_DIR_RO=y
+CT_STRIP_HOST_TOOLCHAIN_EXECUTABLES=y
+# CT_STRIP_TARGET_TOOLCHAIN_EXECUTABLES is not set
+
+#
+# Downloading
+#
+CT_DOWNLOAD_AGENT_WGET=y
+# CT_DOWNLOAD_AGENT_CURL is not set
+# CT_DOWNLOAD_AGENT_NONE is not set
+# CT_FORBID_DOWNLOAD is not set
+# CT_FORCE_DOWNLOAD is not set
+CT_CONNECT_TIMEOUT=10
+CT_DOWNLOAD_WGET_OPTIONS="--passive-ftp --tries=3 -nc --progress=dot:binary"
+# CT_ONLY_DOWNLOAD is not set
+# CT_USE_MIRROR is not set
+
+#
+# Extracting
+#
+# CT_FORCE_EXTRACT is not set
+CT_OVERRIDE_CONFIG_GUESS_SUB=y
+# CT_ONLY_EXTRACT is not set
+CT_PATCH_BUNDLED=y
+# CT_PATCH_LOCAL is not set
+# CT_PATCH_BUNDLED_LOCAL is not set
+# CT_PATCH_LOCAL_BUNDLED is not set
+# CT_PATCH_BUNDLED_FALLBACK_LOCAL is not set
+# CT_PATCH_LOCAL_FALLBACK_BUNDLED is not set
+# CT_PATCH_NONE is not set
+CT_PATCH_ORDER="bundled"
+
+#
+# Build behavior
+#
+CT_PARALLEL_JOBS=0
+CT_LOAD=""
+CT_USE_PIPES=y
+CT_EXTRA_CFLAGS_FOR_BUILD=""
+CT_EXTRA_LDFLAGS_FOR_BUILD=""
+CT_EXTRA_CFLAGS_FOR_HOST=""
+CT_EXTRA_LDFLAGS_FOR_HOST=""
+# CT_CONFIG_SHELL_SH is not set
+# CT_CONFIG_SHELL_ASH is not set
+CT_CONFIG_SHELL_BASH=y
+# CT_CONFIG_SHELL_CUSTOM is not set
+CT_CONFIG_SHELL="${bash}"
+
+#
+# Logging
+#
+# CT_LOG_ERROR is not set
+# CT_LOG_WARN is not set
+# CT_LOG_INFO is not set
+CT_LOG_EXTRA=y
+# CT_LOG_ALL is not set
+# CT_LOG_DEBUG is not set
+CT_LOG_LEVEL_MAX="EXTRA"
+# CT_LOG_SEE_TOOLS_WARN is not set
+CT_LOG_PROGRESS_BAR=y
+CT_LOG_TO_FILE=y
+CT_LOG_FILE_COMPRESS=y
+
+#
+# Target options
+#
+CT_ARCH="mips"
+# CT_ARCH_alpha is not set
+# CT_ARCH_arm is not set
+# CT_ARCH_avr is not set
+# CT_ARCH_m68k is not set
+CT_ARCH_mips=y
+# CT_ARCH_nios2 is not set
+# CT_ARCH_powerpc is not set
+# CT_ARCH_s390 is not set
+# CT_ARCH_sh is not set
+# CT_ARCH_sparc is not set
+# CT_ARCH_x86 is not set
+# CT_ARCH_xtensa is not set
+CT_ARCH_alpha_AVAILABLE=y
+CT_ARCH_arm_AVAILABLE=y
+CT_ARCH_avr_AVAILABLE=y
+CT_ARCH_m68k_AVAILABLE=y
+CT_ARCH_microblaze_AVAILABLE=y
+CT_ARCH_mips_AVAILABLE=y
+CT_ARCH_nios2_AVAILABLE=y
+CT_ARCH_powerpc_AVAILABLE=y
+CT_ARCH_s390_AVAILABLE=y
+CT_ARCH_sh_AVAILABLE=y
+CT_ARCH_sparc_AVAILABLE=y
+CT_ARCH_x86_AVAILABLE=y
+CT_ARCH_xtensa_AVAILABLE=y
+CT_ARCH_SUFFIX=""
+
+#
+# Generic target options
+#
+# CT_MULTILIB is not set
+CT_DEMULTILIB=y
+CT_ARCH_USE_MMU=y
+CT_ARCH_SUPPORTS_BOTH_ENDIAN=y
+CT_ARCH_DEFAULT_BE=y
+CT_ARCH_BE=y
+# CT_ARCH_LE is not set
+CT_ARCH_ENDIAN="big"
+CT_ARCH_SUPPORTS_32=y
+CT_ARCH_SUPPORTS_64=y
+CT_ARCH_DEFAULT_32=y
+CT_ARCH_BITNESS=32
+CT_ARCH_32=y
+# CT_ARCH_64 is not set
+
+#
+# Target optimisations
+#
+CT_ARCH_SUPPORTS_WITH_ARCH=y
+CT_ARCH_SUPPORTS_WITH_TUNE=y
+CT_ARCH_SUPPORTS_WITH_FLOAT=y
+CT_ARCH_ARCH=""
+CT_ARCH_TUNE=""
+# CT_ARCH_FLOAT_AUTO is not set
+# CT_ARCH_FLOAT_HW is not set
+CT_ARCH_FLOAT_SW=y
+CT_TARGET_CFLAGS=""
+CT_TARGET_LDFLAGS=""
+CT_ARCH_FLOAT="soft"
+# CT_ARCH_ALPHA_EV4 is not set
+# CT_ARCH_ALPHA_EV45 is not set
+# CT_ARCH_ALPHA_EV5 is not set
+# CT_ARCH_ALPHA_EV56 is not set
+# CT_ARCH_ALPHA_EV6 is not set
+# CT_ARCH_ALPHA_EV67 is not set
+
+#
+# mips other options
+#
+CT_ARCH_mips_o32=y
+CT_ARCH_mips_ABI="32"
+
+#
+# Toolchain options
+#
+
+#
+# General toolchain options
+#
+CT_WANTS_STATIC_LINK=y
+CT_WANTS_STATIC_LINK_CXX=y
+CT_STATIC_TOOLCHAIN=y
+CT_TOOLCHAIN_PKGVERSION=""
+CT_TOOLCHAIN_BUGURL=""
+
+#
+# Tuple completion and aliasing
+#
+CT_TARGET_VENDOR="qtmips"
+CT_TARGET_ALIAS_SED_EXPR=""
+CT_TARGET_ALIAS=""
+
+#
+# Toolchain type
+#
+CT_CROSS=y
+# CT_CANADIAN is not set
+CT_TOOLCHAIN_TYPE="cross"
+
+#
+# Build system
+#
+CT_BUILD=""
+CT_BUILD_PREFIX=""
+CT_BUILD_SUFFIX=""
+
+#
+# Misc options
+#
+# CT_TOOLCHAIN_ENABLE_NLS is not set
+
+#
+# Operating System
+#
+CT_BARE_METAL=y
+CT_KERNEL="bare-metal"
+CT_KERNEL_bare_metal=y
+# CT_KERNEL_linux is not set
+CT_KERNEL_bare_metal_AVAILABLE=y
+CT_KERNEL_linux_AVAILABLE=y
+CT_KERNEL_windows_AVAILABLE=y
+
+#
+# Common kernel options
+#
+
+#
+# Binary utilities
+#
+CT_ARCH_BINFMT_ELF=y
+CT_BINUTILS="binutils"
+CT_BINUTILS_binutils=y
+
+#
+# GNU binutils
+#
+CT_BINUTILS_VERSION="2.28"
+# CT_BINUTILS_SHOW_LINARO is not set
+CT_BINUTILS_V_2_28=y
+# CT_BINUTILS_V_2_27 is not set
+# CT_BINUTILS_V_2_26 is not set
+CT_BINUTILS_2_27_or_later=y
+CT_BINUTILS_2_26_or_later=y
+CT_BINUTILS_2_25_1_or_later=y
+CT_BINUTILS_2_25_or_later=y
+CT_BINUTILS_2_24_or_later=y
+CT_BINUTILS_2_23_2_or_later=y
+CT_BINUTILS_HAS_HASH_STYLE=y
+CT_BINUTILS_HAS_GOLD=y
+CT_BINUTILS_HAS_PLUGINS=y
+CT_BINUTILS_HAS_PKGVERSION_BUGURL=y
+CT_BINUTILS_LINKER_LD=y
+CT_BINUTILS_LINKERS_LIST="ld"
+CT_BINUTILS_LINKER_DEFAULT="bfd"
+CT_BINUTILS_EXTRA_CONFIG_ARRAY=""
+
+#
+# binutils other options
+#
+
+#
+# C-library
+#
+CT_LIBC="newlib"
+CT_LIBC_VERSION="2.5.0.20170323"
+CT_LIBC_newlib=y
+# CT_LIBC_none is not set
+CT_LIBC_avr_libc_AVAILABLE=y
+CT_LIBC_glibc_AVAILABLE=y
+CT_THREADS="none"
+CT_LIBC_mingw_AVAILABLE=y
+CT_LIBC_musl_AVAILABLE=y
+CT_LIBC_newlib_AVAILABLE=y
+# CT_CC_NEWLIB_SHOW_LINARO is not set
+CT_LIBC_NEWLIB_V_2_5_0=y
+# CT_LIBC_NEWLIB_V_2_4_0 is not set
+# CT_LIBC_NEWLIB_V_2_3_0 is not set
+# CT_LIBC_NEWLIB_V_2_2_0 is not set
+# CT_LIBC_NEWLIB_V_2_1_0 is not set
+# CT_LIBC_NEWLIB_V_2_0_0 is not set
+# CT_LIBC_NEWLIB_V_1_20_0 is not set
+# CT_LIBC_NEWLIB_V_1_19_0 is not set
+# CT_LIBC_NEWLIB_V_1_18_0 is not set
+# CT_LIBC_NEWLIB_V_1_17_0 is not set
+CT_LIBC_NEWLIB_2_5=y
+CT_LIBC_NEWLIB_2_5_or_later=y
+CT_LIBC_NEWLIB_2_4_or_later=y
+CT_LIBC_NEWLIB_2_3_or_later=y
+CT_LIBC_NEWLIB_2_2_or_later=y
+CT_LIBC_NEWLIB_2_1_or_later=y
+CT_LIBC_NEWLIB_2_0_or_later=y
+CT_LIBC_NEWLIB_TARGET_CFLAGS=""
+CT_LIBC_none_AVAILABLE=y
+CT_LIBC_uClibc_AVAILABLE=y
+CT_LIBC_SUPPORT_THREADS_NONE=y
+CT_LIBC_PROVIDES_CXA_ATEXIT=y
+
+#
+# Common C library options
+#
+CT_THREADS_NONE=y
+
+#
+# newlib other options
+#
+# CT_LIBC_NEWLIB_IO_C99FMT is not set
+# CT_LIBC_NEWLIB_IO_LL is not set
+# CT_LIBC_NEWLIB_IO_FLOAT is not set
+# CT_LIBC_NEWLIB_IO_POS_ARGS is not set
+CT_LIBC_NEWLIB_FVWRITE_IN_STREAMIO=y
+CT_LIBC_NEWLIB_UNBUF_STREAM_OPT=y
+CT_LIBC_NEWLIB_FSEEK_OPTIMIZATION=y
+# CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS is not set
+# CT_LIBC_NEWLIB_REGISTER_FINI is not set
+CT_LIBC_NEWLIB_ATEXIT_DYNAMIC_ALLOC=y
+# CT_LIBC_NEWLIB_GLOBAL_ATEXIT is not set
+# CT_LIBC_NEWLIB_LITE_EXIT is not set
+# CT_LIBC_NEWLIB_REENT_SMALL is not set
+CT_LIBC_NEWLIB_MULTITHREAD=y
+# CT_LIBC_NEWLIB_EXTRA_SECTIONS is not set
+CT_LIBC_NEWLIB_WIDE_ORIENT=y
+CT_LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE=y
+# CT_LIBC_NEWLIB_NANO_MALLOC is not set
+# CT_LIBC_NEWLIB_NANO_FORMATTED_IO is not set
+CT_LIBC_NEWLIB_EXTRA_CONFIG_ARRAY=""
+
+#
+# C compiler
+#
+CT_CC="gcc"
+CT_CC_CORE_PASS_2_NEEDED=y
+CT_CC_gcc=y
+CT_CC_GCC_VERSION="6.3.0"
+# CT_CC_GCC_SHOW_LINARO is not set
+CT_CC_GCC_V_6_3_0=y
+# CT_CC_GCC_V_5_4_0 is not set
+# CT_CC_GCC_V_4_9_4 is not set
+CT_CC_GCC_4_8_or_later=y
+CT_CC_GCC_4_9_or_later=y
+CT_CC_GCC_5_or_later=y
+CT_CC_GCC_6=y
+CT_CC_GCC_6_or_later=y
+CT_CC_GCC_HAS_LIBMPX=y
+CT_CC_GCC_ENABLE_CXX_FLAGS=""
+CT_CC_GCC_CORE_EXTRA_CONFIG_ARRAY=""
+CT_CC_GCC_EXTRA_CONFIG_ARRAY=""
+# CT_CC_GCC_TARGET_FINAL is not set
+CT_CC_GCC_STATIC_LIBSTDCXX=y
+# CT_CC_GCC_SYSTEM_ZLIB is not set
+CT_CC_GCC_CONFIG_TLS=m
+
+#
+# Optimisation features
+#
+CT_CC_GCC_USE_GRAPHITE=y
+
+#
+# Settings for libraries running on target
+#
+CT_CC_GCC_ENABLE_TARGET_OPTSPACE=y
+# CT_CC_GCC_LIBMUDFLAP is not set
+# CT_CC_GCC_LIBSSP is not set
+# CT_CC_GCC_LIBQUADMATH is not set
+
+#
+# Misc. obscure options.
+#
+CT_CC_CXA_ATEXIT=y
+# CT_CC_GCC_DISABLE_PCH is not set
+CT_CC_GCC_LDBL_128=m
+# CT_CC_GCC_BUILD_ID is not set
+CT_CC_GCC_LNK_HASH_STYLE_DEFAULT=y
+# CT_CC_GCC_LNK_HASH_STYLE_SYSV is not set
+# CT_CC_GCC_LNK_HASH_STYLE_GNU is not set
+# CT_CC_GCC_LNK_HASH_STYLE_BOTH is not set
+CT_CC_GCC_LNK_HASH_STYLE=""
+CT_CC_GCC_DEC_FLOAT_AUTO=y
+# CT_CC_GCC_DEC_FLOAT_BID is not set
+# CT_CC_GCC_DEC_FLOAT_DPD is not set
+# CT_CC_GCC_DEC_FLOATS_NO is not set
+CT_CC_GCC_HAS_ARCH_OPTIONS=y
+
+#
+# archictecture-specific options
+#
+CT_CC_GCC_mips_llsc=m
+CT_CC_GCC_mips_synci=m
+# CT_CC_GCC_mips_plt is not set
+CT_CC_SUPPORT_CXX=y
+CT_CC_SUPPORT_FORTRAN=y
+CT_CC_SUPPORT_JAVA=y
+CT_CC_SUPPORT_ADA=y
+CT_CC_SUPPORT_OBJC=y
+CT_CC_SUPPORT_OBJCXX=y
+CT_CC_SUPPORT_GOLANG=y
+
+#
+# Additional supported languages:
+#
+# CT_CC_LANG_CXX is not set
+# CT_CC_LANG_FORTRAN is not set
+
+#
+# Debug facilities
+#
+# CT_DEBUG_gdb is not set
+# CT_DEBUG_ltrace is not set
+# CT_DEBUG_strace is not set
+
+#
+# Companion libraries
+#
+CT_COMPLIBS_NEEDED=y
+CT_GMP_NEEDED=y
+CT_MPFR_NEEDED=y
+CT_ISL_NEEDED=y
+CT_MPC_NEEDED=y
+CT_COMPLIBS=y
+# CT_LIBICONV is not set
+# CT_GETTEXT is not set
+CT_GMP=y
+CT_MPFR=y
+CT_ISL=y
+CT_MPC=y
+# CT_ZLIB is not set
+CT_GMP_V_6_1_2=y
+CT_GMP_5_0_2_or_later=y
+CT_GMP_VERSION="6.1.2"
+CT_MPFR_V_3_1_5=y
+CT_MPFR_VERSION="3.1.5"
+CT_ISL_V_0_16_1=y
+# CT_ISL_V_0_15 is not set
+CT_ISL_V_0_16_or_later=y
+CT_ISL_V_0_15_or_later=y
+CT_ISL_V_0_14_or_later=y
+CT_ISL_V_0_12_or_later=y
+CT_ISL_VERSION="0.16.1"
+CT_MPC_V_1_0_3=y
+CT_MPC_VERSION="1.0.3"
+
+#
+# Companion libraries common options
+#
+# CT_COMPLIBS_CHECK is not set
+
+#
+# Companion tools
+#
+# CT_COMP_TOOLS_FOR_HOST is not set
+# CT_COMP_TOOLS_autoconf is not set
+# CT_COMP_TOOLS_automake is not set
+# CT_COMP_TOOLS_libtool is not set
+# CT_COMP_TOOLS_m4 is not set
+# CT_COMP_TOOLS_make is not set
diff --git a/compiler/crosstool-ng b/compiler/crosstool-ng
new file mode 160000
+Subproject 368a0169a27313cca60cf7d7358b6f3ef12122e
diff --git a/qtmips.pro b/qtmips.pro
new file mode 100644
index 0000000..f339831
--- /dev/null
+++ b/qtmips.pro
@@ -0,0 +1,11 @@
+TEMPLATE = subdirs
+
+SUBDIRS += \
+    qtmips_machine \
+    qtmips_machine/tests \
+    qtmips_cli \
+    qtmips_gui
+
+qtmips_cli.depends = qtmips_machine
+qtmips_gui.depends = qtmips_machine
+qtmips_machine-tests.depends = qtmips_machine
diff --git a/qtmips_cli/machineapp.cpp b/qtmips_cli/machineapp.cpp
new file mode 100644
index 0000000..09fcd3e
--- /dev/null
+++ b/qtmips_cli/machineapp.cpp
@@ -0,0 +1,11 @@
+#include "machineapp.h"
+#include <iostream>
+
+MachineApp::MachineApp(int argc, char **argv) : QCoreApplication(argc, argv) {
+    connect(this, SIGNAL(aboutToQuit()), this, SLOT(quit()));
+    // TODO drop hello
+    std::cout << "Hello\n";
+    std::cout.flush();
+    // TODO check argc
+    this->machine = new QtMipsMachine(argv[1]);
+}
diff --git a/qtmips_cli/machineapp.h b/qtmips_cli/machineapp.h
new file mode 100644
index 0000000..6587154
--- /dev/null
+++ b/qtmips_cli/machineapp.h
@@ -0,0 +1,16 @@
+#ifndef MACHINEAPP_H
+#define MACHINEAPP_H
+
+#include <QCoreApplication>
+
+#include "qtmipsmachine.h"
+#include "programloader.h"
+
+class MachineApp : public QCoreApplication {
+public:
+    MachineApp(int argc, char **argv);
+private:
+    QtMipsMachine *machine;
+};
+
+#endif // MACHINEAPP_H
diff --git a/qtmips_cli/main.cpp b/qtmips_cli/main.cpp
new file mode 100644
index 0000000..780f782
--- /dev/null
+++ b/qtmips_cli/main.cpp
@@ -0,0 +1,12 @@
+#include <QCoreApplication>
+#include <iostream>
+#include "machineapp.h"
+
+#include "instructions/arithmetic.h"
+
+int main(int argc, char *argv[])
+{
+    MachineApp app(argc, argv);
+
+    return app.exec();
+}
diff --git a/qtmips_cli/qtmips_cli.pro b/qtmips_cli/qtmips_cli.pro
new file mode 100644
index 0000000..a541451
--- /dev/null
+++ b/qtmips_cli/qtmips_cli.pro
@@ -0,0 +1,22 @@
+QT += core
+QT -= gui
+
+TARGET = qtmips_cli
+CONFIG += console
+CONFIG -= app_bundle
+CONFIG += c++11
+
+TEMPLATE = app
+
+LIBS += -L$$OUT_PWD/../qtmips_machine/ -lqtmips_machine
+INCLUDEPATH += $$PWD/../qtmips_machine
+DEPENDPATH += $$PWD/../qtmips_machine
+QMAKE_CXXFLAGS += -std=c++0x
+
+DEFINES += QT_DEPRECATED_WARNINGS
+
+SOURCES += main.cpp \
+        machineapp.cpp
+
+HEADERS += \
+        machineapp.h
diff --git a/qtmips_gui/main.cpp b/qtmips_gui/main.cpp
new file mode 100644
index 0000000..b48f94e
--- /dev/null
+++ b/qtmips_gui/main.cpp
@@ -0,0 +1,11 @@
+#include "mainwindow.h"
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+
+    return a.exec();
+}
diff --git a/qtmips_gui/mainwindow.cpp b/qtmips_gui/mainwindow.cpp
new file mode 100644
index 0000000..49d64fc
--- /dev/null
+++ b/qtmips_gui/mainwindow.cpp
@@ -0,0 +1,14 @@
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::MainWindow)
+{
+    ui->setupUi(this);
+}
+
+MainWindow::~MainWindow()
+{
+    delete ui;
+}
diff --git a/qtmips_gui/mainwindow.h b/qtmips_gui/mainwindow.h
new file mode 100644
index 0000000..a3948a9
--- /dev/null
+++ b/qtmips_gui/mainwindow.h
@@ -0,0 +1,22 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+namespace Ui {
+class MainWindow;
+}
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    explicit MainWindow(QWidget *parent = 0);
+    ~MainWindow();
+
+private:
+    Ui::MainWindow *ui;
+};
+
+#endif // MAINWINDOW_H
diff --git a/qtmips_gui/mainwindow.ui b/qtmips_gui/mainwindow.ui
new file mode 100644
index 0000000..6050363
--- /dev/null
+++ b/qtmips_gui/mainwindow.ui
@@ -0,0 +1,24 @@
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow" >
+  <property name="geometry" >
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle" >
+   <string>MainWindow</string>
+  </property>
+  <widget class="QMenuBar" name="menuBar" />
+  <widget class="QToolBar" name="mainToolBar" />
+  <widget class="QWidget" name="centralWidget" />
+  <widget class="QStatusBar" name="statusBar" />
+ </widget>
+ <layoutDefault spacing="6" margin="11" />
+ <pixmapfunction></pixmapfunction>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/qtmips_gui/qtmips_gui.pro b/qtmips_gui/qtmips_gui.pro
new file mode 100644
index 0000000..7dfb53c
--- /dev/null
+++ b/qtmips_gui/qtmips_gui.pro
@@ -0,0 +1,23 @@
+QT += core gui widgets
+
+TARGET = qtmips_gui
+CONFIG += c++11
+
+TEMPLATE = app
+
+LIBS += -L$$OUT_PWD/../qtmips_machine/ -lqtmips_machine
+INCLUDEPATH += $$PWD/../qtmips_machine
+DEPENDPATH += $$PWD/../qtmips_machine
+QMAKE_CXXFLAGS += -std=c++0x
+
+DEFINES += QT_DEPRECATED_WARNINGS
+
+SOURCES += \
+        main.cpp \
+        mainwindow.cpp
+
+HEADERS += \
+        mainwindow.h
+
+FORMS += \
+        mainwindow.ui
diff --git a/qtmips_machine/cache.cpp b/qtmips_machine/cache.cpp
new file mode 100644
index 0000000..05b26b0
--- /dev/null
+++ b/qtmips_machine/cache.cpp
@@ -0,0 +1 @@
+#include "cache.h"
diff --git a/qtmips_machine/cache.h b/qtmips_machine/cache.h
new file mode 100644
index 0000000..280ac05
--- /dev/null
+++ b/qtmips_machine/cache.h
@@ -0,0 +1,18 @@
+#ifndef CACHE_H
+#define CACHE_H
+
+#include "memory.h"
+
+class Cache : public MemoryAccess {
+public:
+    Cache(Memory *m);
+};
+
+class CacheAssociative : public Cache {
+public:
+    CacheAssociative(Memory *m);
+};
+
+// TODO other chaches
+
+#endif // CACHE_H
diff --git a/qtmips_machine/core.cpp b/qtmips_machine/core.cpp
new file mode 100644
index 0000000..a6c92b5
--- /dev/null
+++ b/qtmips_machine/core.cpp
@@ -0,0 +1,5 @@
+#include "core.h"
+
+Core::Core() {
+
+}
diff --git a/qtmips_machine/core.h b/qtmips_machine/core.h
new file mode 100644
index 0000000..2fd0a40
--- /dev/null
+++ b/qtmips_machine/core.h
@@ -0,0 +1,21 @@
+#ifndef CORE_H
+#define CORE_H
+
+#include <QObject>
+#include "instruction.h"
+#include "registers.h"
+#include "memory.h"
+#include "programloader.h"
+#include "programmemory.h"
+
+class Core : public QObject {
+    Q_OBJECT
+public:
+    Core();
+
+signals:
+
+public slots:
+};
+
+#endif // CORE_H
diff --git a/qtmips_machine/instruction.cpp b/qtmips_machine/instruction.cpp
new file mode 100644
index 0000000..159d443
--- /dev/null
+++ b/qtmips_machine/instruction.cpp
@@ -0,0 +1,81 @@
+#include "instruction.h"
+#include <sstream>
+#include <iostream>
+
+InstructionR::InstructionR(std::uint8_t rs, std::uint8_t rd, std::uint8_t rt, std::uint8_t sa) {
+    this->rs = rs;
+    this->rd = rd;
+    this->rt = rt;
+    this->sa = sa;
+}
+
+// TODO for registers output as register ($0)!
+
+std::vector<std::string> InstructionR::to_strs() {
+    std::vector<std::string> str;
+    // Instruction name
+    str.push_back("unknown"); // unknown instruction, should be replaced by child
+
+    std::stringstream ss;
+    // Source register
+    ss << std::hex << (unsigned) this->rs;
+    str.push_back(ss.str());
+    ss.str("");
+    // Target register
+    ss << std::hex << (unsigned) this->rt;
+    str.push_back(ss.str());
+    ss.str("");
+    // Destination register
+    ss << std::hex << (unsigned) this->rd;
+    str.push_back(ss.str());
+    ss.str("");
+    // Shift amount
+    ss << std::hex << (unsigned) this->sa;
+    str.push_back(ss.str());
+
+    return str;
+}
+
+InstructionI::InstructionI(std::uint8_t rs, std::uint8_t rt, std::uint16_t immediate) {
+    this->rs = rs;
+    this->rt = rt;
+    this->immediage = immediate;
+}
+
+std::vector<std::string> InstructionI::to_strs() {
+    std::vector<std::string> str;
+    // Instruction name
+    str.push_back("unknown"); // unknown instruction, should be replaced by child
+
+    std::stringstream ss;
+    // Source register
+    ss << std::hex << (unsigned) this->rs;
+    str.push_back(ss.str());
+    ss.str("");
+    // Destination register
+    ss << std::hex << (unsigned) this->rt;
+    str.push_back(ss.str());
+    ss.str("");
+    // Immediate value
+    ss << std::hex << (unsigned) this->immediage;
+    str.push_back(ss.str());
+
+    return str;
+}
+
+InstructionJ::InstructionJ(std::uint32_t address) {
+    this->address = address;
+}
+
+std::vector<std::string> InstructionJ::to_strs() {
+    std::vector<std::string> str;
+    // Instruction name
+    str.push_back("unknown"); // unknown instruction, should be replaced by child
+
+    std::stringstream ss;
+    // Source register
+    ss << std::hex << (unsigned) this->address;
+    str.push_back(ss.str());
+
+    return str;
+}
diff --git a/qtmips_machine/instruction.h b/qtmips_machine/instruction.h
new file mode 100644
index 0000000..6ab7015
--- /dev/null
+++ b/qtmips_machine/instruction.h
@@ -0,0 +1,48 @@
+#ifndef INSTRUCTION_H
+#define INSTRUCTION_H
+
+#include <vector>
+#include <string>
+#include "registers.h"
+#include "memory.h"
+
+class Instruction {
+public:
+    // TODO return types should be according to what instruction can pass from this stage
+    //virtual void decode(Registers *regs) = 0; // Read and prepare instructions
+    //virtual void execute() = 0; // ALU operations
+    //virtual void memory(Memory *mem) = 0; // Read or write to memory
+    //virtual void write_back(Registers *regs) = 0; // Write results to registers
+
+    virtual std::vector<std::string> to_strs() = 0; // Returns all fields of instructions in string
+};
+
+class InstructionR : public Instruction {
+public:
+    InstructionR(std::uint8_t rs, std::uint8_t rd, std::uint8_t rt, std::uint8_t sa);
+
+    std::vector<std::string> to_strs();
+protected:
+    std::uint8_t rs, rd, rt, sa;
+};
+
+class InstructionI : public Instruction {
+public:
+    InstructionI(std::uint8_t rs, std::uint8_t rt, std::uint16_t immediate);
+
+    std::vector<std::string> to_strs();
+protected:
+    std::uint8_t rs, rt;
+    std::uint16_t immediage;
+};
+
+class InstructionJ : public Instruction {
+public:
+    InstructionJ(std::uint32_t address);
+
+    std::vector<std::string> to_strs();
+protected:
+    std::uint32_t address;
+};
+
+#endif // INSTRUCTION_H
diff --git a/qtmips_machine/instructions/arithmetic.cpp b/qtmips_machine/instructions/arithmetic.cpp
new file mode 100644
index 0000000..8c8f40e
--- /dev/null
+++ b/qtmips_machine/instructions/arithmetic.cpp
@@ -0,0 +1,87 @@
+#include "instructions/arithmetic.h"
+#include <iostream>
+
+InstructionArithmetic::InstructionArithmetic(enum InstructionArithmeticT type, std::uint8_t rs, std::uint8_t rd, std::uint8_t rt)
+    : InstructionR(rs, rd, rt, 0) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionArithmetic::to_strs() {
+    std::vector<std::string> str = this->InstructionR::to_strs();
+    str.erase(str.begin() + 4); // Drop sa field
+    switch (this->type) {
+    case IAT_ADD:
+        str[0] = "add";
+        break;
+    case IAT_ADDU:
+        str[0] = "addu";
+        break;
+    case IAT_SUB:
+        str[0] = "sub";
+        break;
+    case IAT_SUBU:
+        str[0] = "subu";
+        break;
+    case IAT_AND:
+        str[0] = "and";
+        break;
+    case IAT_OR:
+        str[0] = "or";
+        break;
+    case IAT_XOR:
+        str[0] = "xor";
+        break;
+    case IAT_NOR:
+        str[0] = "nor";
+        break;
+    case IAT_SLT:
+        str[0] = "slt";
+        break;
+    case IAT_SLTU:
+        str[0] = "sltu";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
+
+InstructionArithmeticImmediate::InstructionArithmeticImmediate(enum InstructionArithmeticImmediateT type, std::uint8_t rs, std::uint8_t rt, std::uint16_t value)
+    : InstructionI(rs, rt, value) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionArithmeticImmediate::to_strs() {
+    std::vector<std::string> str = this->InstructionI::to_strs();
+    switch (this->type) {
+    case IAT_ADDI:
+        str[0] = "addi";
+        break;
+    case IAT_ADDIU:
+        str[0] = "addiu";
+        break;
+    case IAT_ANDI:
+        str[0] = "andi";
+        break;
+    case IAT_ORI:
+        str[0] = "ori";
+        break;
+    case IAT_XORI:
+        str[0] = "xori";
+        break;
+    case IAT_SLTI:
+        str[0] = "slti";
+        break;
+    case IAT_SLTIU:
+        str[0] = "sltiu";
+        break;
+    case IAT_LUI:
+        str[0] = "lu";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
diff --git a/qtmips_machine/instructions/arithmetic.h b/qtmips_machine/instructions/arithmetic.h
new file mode 100644
index 0000000..29f89d2
--- /dev/null
+++ b/qtmips_machine/instructions/arithmetic.h
@@ -0,0 +1,46 @@
+#ifndef ARITHMETIC_H
+#define ARITHMETIC_H
+
+#include "instruction.h"
+
+enum InstructionArithmeticT {
+    IAT_ADD, // Add
+    IAT_ADDU, // Add unsigned
+    IAT_SUB, // Subtract
+    IAT_SUBU, // Subtract unsigned
+    IAT_AND,
+    IAT_OR,
+    IAT_XOR,
+    IAT_NOR,
+    IAT_SLT, // set on less than
+    IAT_SLTU, // set on less than unsigned
+};
+
+class InstructionArithmetic : public InstructionR  {
+public:
+    InstructionArithmetic(enum InstructionArithmeticT type, std::uint8_t rs, std::uint8_t rd, std::uint8_t rt);
+    std::vector<std::string> to_strs();
+private:
+    enum InstructionArithmeticT type;
+};
+
+enum InstructionArithmeticImmediateT {
+    IAT_ADDI,
+    IAT_ADDIU,
+    IAT_ANDI,
+    IAT_ORI,
+    IAT_XORI,
+    IAT_SLTI,
+    IAT_SLTIU,
+    IAT_LUI
+};
+
+class InstructionArithmeticImmediate : public InstructionI {
+public:
+    InstructionArithmeticImmediate(enum InstructionArithmeticImmediateT type, std::uint8_t rs, std::uint8_t rt, std::uint16_t value);
+    std::vector<std::string> to_strs();
+private:
+    enum InstructionArithmeticImmediateT type;
+};
+
+#endif // ARITHMETIC_H
diff --git a/qtmips_machine/instructions/jumpbranch.cpp b/qtmips_machine/instructions/jumpbranch.cpp
new file mode 100644
index 0000000..2ede399
--- /dev/null
+++ b/qtmips_machine/instructions/jumpbranch.cpp
@@ -0,0 +1,30 @@
+#include "jumpbranch.h"
+
+InstructionJump::InstructionJump(bool link, std::uint32_t address)
+    : InstructionJ(address) {
+    this->link = link;
+}
+
+std::vector<std::string> InstructionJump::to_strs() {
+    std::vector<std::string> str = this->InstructionJ::to_strs();
+    if (link)
+        str[0] = "j";
+    else
+        str[0] = "jal";
+    return str;
+}
+
+InstructionJumpRegister::InstructionJumpRegister(bool link, std::uint8_t rs)
+    : InstructionR(rs, 0, 0, 0) {
+    this->link = link;
+}
+
+std::vector<std::string> InstructionJumpRegister::to_strs() {
+    std::vector<std::string> str = this->InstructionR::to_strs();
+    str.erase(str.begin() + 2, str.end()); // Drop every field after rs
+    if (link)
+        str[0] = "j";
+    else
+        str[0] = "jal";
+    return str;
+}
diff --git a/qtmips_machine/instructions/jumpbranch.h b/qtmips_machine/instructions/jumpbranch.h
new file mode 100644
index 0000000..b8dee5c
--- /dev/null
+++ b/qtmips_machine/instructions/jumpbranch.h
@@ -0,0 +1,34 @@
+#ifndef JUMPBRANCH_H
+#define JUMPBRANCH_H
+
+#include "instruction.h"
+
+class InstructionJump : InstructionJ {
+public:
+    InstructionJump(bool link, std::uint32_t address);
+    std::vector<std::string> to_strs();
+private:
+    bool link;
+};
+
+class InstructionJumpRegister : InstructionR {
+public:
+    InstructionJumpRegister(bool link, std::uint8_t rs);
+    std::vector<std::string> to_strs();
+private:
+    bool link;
+};
+
+enum InstructionBranchT {
+
+};
+
+class InstructionBranch : InstructionI {
+public:
+    InstructionBranch();
+    std::vector<std::string> to_strs();
+private:
+    // TODO
+};
+
+#endif // JUMPBRANCH_H
diff --git a/qtmips_machine/instructions/loadstore.cpp b/qtmips_machine/instructions/loadstore.cpp
new file mode 100644
index 0000000..c83eae4
--- /dev/null
+++ b/qtmips_machine/instructions/loadstore.cpp
@@ -0,0 +1,67 @@
+#include "loadstore.h"
+
+InstructionLoad::InstructionLoad(enum InstructionLoadStoreT type, std::uint8_t rs, std::uint8_t rt, std::uint16_t offset)
+    : InstructionI(rs, rt, offset) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionLoad::to_strs() {
+    std::vector<std::string> str = this->InstructionI::to_strs();
+    switch (this->type) {
+    case ILST_B:
+        str[0] = "lb";
+        break;
+    case ILST_HW:
+        str[0] = "lh";
+        break;
+    case ILST_WL:
+        str[0] = "lwl";
+        break;
+    case ILST_W:
+        str[0] = "lw";
+        break;
+    case ILST_BU:
+        str[0] = "lbu";
+        break;
+    case ILST_HU:
+        str[0] = "lhu";
+        break;
+    case ILST_WR:
+        str[0] = "lwr";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
+
+InstructionStore::InstructionStore(enum InstructionLoadStoreT type, std::uint8_t rs, std::uint8_t rt, std::uint16_t offset)
+    : InstructionI(rs, rt, offset) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionStore::to_strs() {
+    std::vector<std::string> str = this->InstructionI::to_strs();
+    switch (this->type) {
+    case ILST_B:
+        str[0] = "sb";
+        break;
+    case ILST_HW:
+        str[0] = "sh";
+        break;
+    case ILST_WL:
+        str[0] = "swl";
+        break;
+    case ILST_W:
+        str[0] = "sw";
+        break;
+    case ILST_WR:
+        str[0] = "swr";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
diff --git a/qtmips_machine/instructions/loadstore.h b/qtmips_machine/instructions/loadstore.h
new file mode 100644
index 0000000..9741bd7
--- /dev/null
+++ b/qtmips_machine/instructions/loadstore.h
@@ -0,0 +1,32 @@
+#ifndef LOADSTORE_H
+#define LOADSTORE_H
+
+#include "instruction.h"
+
+enum InstructionLoadStoreT {
+    ILST_B, // Byte
+    ILST_HW, // Half word
+    ILST_WL, // Word left
+    ILST_W, // Word
+    ILST_BU, // Byte unsigned
+    ILST_HU, // Half word unsigned
+    ILST_WR // Word right
+};
+
+class InstructionLoad : public InstructionI {
+public:
+    InstructionLoad(enum InstructionLoadStoreT type, std::uint8_t rs, std::uint8_t rt, std::uint16_t offset);
+    std::vector<std::string> to_strs();
+private:
+    enum InstructionLoadStoreT type;
+};
+
+class InstructionStore : public InstructionI {
+public:
+    InstructionStore(enum InstructionLoadStoreT type, std::uint8_t rs, std::uint8_t rt, std::uint16_t offset);
+    std::vector<std::string> to_strs();
+private:
+    enum InstructionLoadStoreT type;
+};
+
+#endif // LOADSTORE_H
diff --git a/qtmips_machine/instructions/nop.cpp b/qtmips_machine/instructions/nop.cpp
new file mode 100644
index 0000000..5fd5e47
--- /dev/null
+++ b/qtmips_machine/instructions/nop.cpp
@@ -0,0 +1,7 @@
+#include "nop.h"
+
+std::vector<std::string> InstructionNop::to_strs() {
+    std::vector<std::string> str;
+    str.push_back("nop");
+    return str;
+}
diff --git a/qtmips_machine/instructions/nop.h b/qtmips_machine/instructions/nop.h
new file mode 100644
index 0000000..b098b11
--- /dev/null
+++ b/qtmips_machine/instructions/nop.h
@@ -0,0 +1,11 @@
+#ifndef NOP_H
+#define NOP_H
+
+#include "instruction.h"
+
+class InstructionNop : public Instruction {
+public:
+    std::vector<std::string> to_strs();
+};
+
+#endif // NOP_H
diff --git a/qtmips_machine/instructions/shift.cpp b/qtmips_machine/instructions/shift.cpp
new file mode 100644
index 0000000..a8c6e41
--- /dev/null
+++ b/qtmips_machine/instructions/shift.cpp
@@ -0,0 +1,51 @@
+#include "shift.h"
+
+InstructionShift::InstructionShift(enum InstructionShiftT type, std::uint8_t rt, std::uint8_t rd, std::uint8_t sa)
+    : InstructionR(0, rt, rd, sa) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionShift::to_strs() {
+    std::vector<std::string> str = this->InstructionR::to_strs();
+    str.erase(str.begin() + 1); // Drop rs field
+    switch (this->type) {
+    case IST_LL:
+        str[0] = "sll";
+        break;
+    case IST_RL:
+        str[0] = "srl";
+        break;
+    case IST_RA:
+        str[0] = "sra";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
+
+InstructionShiftVariable::InstructionShiftVariable(enum InstructionShiftT type, std::uint8_t rs, std::uint8_t rt, std::uint8_t rd)
+    : InstructionR(rs, rt, rd, 0) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionShiftVariable::to_strs() {
+    std::vector<std::string> str = this->InstructionR::to_strs();
+    str.erase(str.begin() + 4); // Drop sa field
+    switch (this->type) {
+    case IST_LL:
+        str[0] = "sllv";
+        break;
+    case IST_RL:
+        str[0] = "srlv";
+        break;
+    case IST_RA:
+        str[0] = "srav";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
diff --git a/qtmips_machine/instructions/shift.h b/qtmips_machine/instructions/shift.h
new file mode 100644
index 0000000..9ce29e0
--- /dev/null
+++ b/qtmips_machine/instructions/shift.h
@@ -0,0 +1,28 @@
+#ifndef SHIFT_H
+#define SHIFT_H
+
+#include "instruction.h"
+
+enum InstructionShiftT {
+    IST_LL, // Left logical
+    IST_RL, // Right logical
+    IST_RA // Right arithmetic
+};
+
+class InstructionShift : public InstructionR {
+public:
+    InstructionShift(enum InstructionShiftT type, std::uint8_t rt, std::uint8_t rd, std::uint8_t sa);
+    std::vector<std::string> to_strs();
+private:
+    enum InstructionShiftT type;
+};
+
+class InstructionShiftVariable : public InstructionR {
+public:
+    InstructionShiftVariable(enum InstructionShiftT type, std::uint8_t rs, std::uint8_t rt, std::uint8_t rd);
+    std::vector<std::string> to_strs();
+private:
+    enum InstructionShiftT type;
+};
+
+#endif // SHIFT_H
diff --git a/qtmips_machine/memory.cpp b/qtmips_machine/memory.cpp
new file mode 100644
index 0000000..25deab0
--- /dev/null
+++ b/qtmips_machine/memory.cpp
@@ -0,0 +1,137 @@
+#include "memory.h"
+
+void MemoryAccess::write_hword(std::uint32_t offset, std::uint16_t value) {
+    this->write_byte(offset++, (std::uint8_t)value);
+    this->write_byte(offset, (std::uint8_t)(value >> 8));
+}
+
+void MemoryAccess::write_word(std::uint32_t offset, std::uint32_t value) {
+    this->write_byte(offset++, (std::uint8_t)value);
+    this->write_byte(offset++, (std::uint8_t)(value >> 8));
+    this->write_byte(offset++, (std::uint8_t)(value >> 16));
+    this->write_byte(offset++, (std::uint8_t)(value >> 24));
+}
+
+std::uint16_t MemoryAccess::read_hword(std::uint32_t offset) {
+    std::uint16_t dt = 0;
+    dt |= this->read_byte(offset++);
+    dt |= (this->read_byte(offset) << 8);
+    return dt;
+}
+
+std::uint32_t MemoryAccess::read_word(std::uint32_t offset) {
+    std::uint32_t dt = 0;
+    dt |= this->read_byte(offset++);
+    dt |= (this->read_byte(offset++) << 8);
+    dt |= (this->read_byte(offset++) << 16);
+    dt |= (this->read_byte(offset) << 24);
+    return dt;
+}
+
+MemorySection::MemorySection(std::uint32_t length) {
+    this->length = length;
+    this->dt = new std::uint8_t[length];
+}
+
+MemorySection::~MemorySection() {
+    delete this->dt;
+}
+
+using namespace  std;
+
+void MemorySection::write_byte(std::uint32_t offset, std::uint8_t value) {
+    if (offset >= this->length)
+        throw QTMIPS_EXCEPTION(OutOfMemoryAccess, "Trying to write outside of the memory section", std::string("Accessing using offset: ") + std::to_string(offset));
+    this->dt[offset] = value;
+}
+
+std::uint8_t MemorySection::read_byte(std::uint32_t offset) {
+    if (offset >= this->length)
+        throw QTMIPS_EXCEPTION(OutOfMemoryAccess, "Trying to read outside of the memory section", std::string("Accessing using offset: ") + std::to_string(offset));
+    return this->dt[offset];
+}
+
+// Number of bites per row on lookup tree
+#define MEMORY_TREE_ROW ((32 - MEMORY_SECTION_BITS) / MEMORY_TREE_H)
+// Size of row in memory lookup tree
+#define MEMORY_TREE_LEN (1 << MEMORY_TREE_ROW)
+// Just do some sanity checks
+#if (MEMORY_TREE_LEN == 0)
+#error Nonzero memory tree row size
+#endif
+#if (((32 - MEMORY_SECTION_BITS) % MEMORY_TREE_H) != 0)
+#error Memory tree is not fully divisible by memory tree height
+#endif
+#if (MEMORY_TREE_H < 2)
+#error Memory tree have to be higher or in limit equal to two
+#endif
+
+union MemoryTree {
+    union MemoryTree *mt;
+    MemorySection *sec;
+};
+
+Memory::Memory() {
+    this->mt_root = allocate_section_tree();
+}
+
+Memory::~Memory() {
+    // Free up memory tree
+    // TODO
+}
+
+union MemoryTree *Memory::allocate_section_tree() {
+    union MemoryTree *mt = new union MemoryTree[MEMORY_TREE_LEN];
+    for (size_t i = 0; i < MEMORY_TREE_LEN; i++)
+        // Note that this also nulls sec pointer as those are both pointers and so they have same size
+        mt[i].mt = nullptr;
+    return mt;
+}
+
+// Create address mask with section length
+#define ADDRESS_MASK(LEN) ((1 << LEN) - 1)
+
+// Get index in tree node from address, length of row and tree depth
+// ADDR is expected to be and address with lowest bites removed (MEMORY_SECTION_BITS)
+#define ADDRESS_TREE_INDEX(DEPTH, ADDR) ((ADDR >> (DEPTH * MEMORY_TREE_ROW)) & ADDRESS_MASK(MEMORY_TREE_ROW))
+
+
+MemorySection *Memory::get_section(std::uint32_t address, bool create) {
+    std::uint32_t addr = address >> MEMORY_SECTION_BITS; // drop all bits for addressing inside of the section
+    union MemoryTree *w = this->mt_root;
+    size_t ii;
+    for (int i = 0; i < (MEMORY_TREE_H - 1); i++) {
+        ii = ADDRESS_TREE_INDEX(i, addr);
+        if (w[ii].mt == nullptr) { // We don't have this tree so allocate it
+            if (!create) // If we shouldn't be creating it than just return null
+                return nullptr;
+            w[ii].mt = allocate_section_tree();
+        }
+        w = w[ii].mt;
+    }
+    // Now expand last level
+    ii = ADDRESS_TREE_INDEX((MEMORY_TREE_H - 1), addr);
+    if (w[ii].sec == nullptr) {
+        if (!create)
+            return nullptr;
+        w[ii].sec = new MemorySection(1 << MEMORY_SECTION_BITS);
+    }
+    return w[ii].sec;
+}
+
+// Note about this address magic: we want to mask upper bits in address as those were used
+// for section lookup. We do it using (2^BITS - 1).
+#define SECTION_ADDRESS(ADDR) (ADDR & ADDRESS_MASK(MEMORY_SECTION_BITS))
+
+void Memory::write_byte(std::uint32_t address, std::uint8_t value) {
+    MemorySection *section = this->get_section(address, true);
+    section->write_byte(SECTION_ADDRESS(address), value);
+}
+
+std::uint8_t Memory::read_byte(std::uint32_t address) {
+    MemorySection *section = this->get_section(address, true);
+    if (section == nullptr)
+        return 0;
+    else
+        return section->read_byte(SECTION_ADDRESS(address));
+}
diff --git a/qtmips_machine/memory.h b/qtmips_machine/memory.h
new file mode 100644
index 0000000..1df23ae
--- /dev/null
+++ b/qtmips_machine/memory.h
@@ -0,0 +1,60 @@
+#ifndef MEMORY_H
+#define MEMORY_H
+
+#include <QObject>
+#include <vector>
+#include <cstdint>
+#include "qtmipsexception.h"
+
+// Virtual class for common memory access
+class MemoryAccess : public QObject {
+    Q_OBJECT
+public:
+    virtual void write_byte(std::uint32_t offset, std::uint8_t value) = 0;
+    void write_hword(std::uint32_t offset, std::uint16_t value);
+    void write_word(std::uint32_t offset, std::uint32_t value);
+
+    virtual std::uint8_t read_byte(std::uint32_t offset) = 0;
+    std::uint16_t read_hword(std::uint32_t offset);
+    std::uint32_t read_word(std::uint32_t offset);
+
+signals:
+    // TODO trigger
+    void byte_change(std::uint32_t address, std::uint32_t value);
+};
+
+class MemorySection : public MemoryAccess {
+public:
+    MemorySection(std::uint32_t length);
+    ~MemorySection();
+    void write_byte(std::uint32_t offset, std::uint8_t value);
+    std::uint8_t read_byte(std::uint32_t offset);
+private:
+    std::uint32_t length;
+    std::uint8_t *dt;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+/// Some optimalization options
+// How big memory sections will be (2^8=256)
+#define MEMORY_SECTION_BITS 8
+// How deep memory lookup tree will be
+#define MEMORY_TREE_H 4
+//////////////////////////////////////////////////////////////////////////////
+
+union MemoryTree;
+
+class Memory : public MemoryAccess {
+    Q_OBJECT
+public:
+    Memory();
+    ~Memory();
+    MemorySection *get_section(std::uint32_t address, bool create); // returns section containing given address
+    void write_byte(std::uint32_t address, std::uint8_t value);
+    std::uint8_t read_byte(std::uint32_t address);
+private:
+    union MemoryTree *mt_root;
+    static union MemoryTree *allocate_section_tree();
+};
+
+#endif // MEMORY_H
diff --git a/qtmips_machine/programloader.cpp b/qtmips_machine/programloader.cpp
new file mode 100644
index 0000000..0b0e294
--- /dev/null
+++ b/qtmips_machine/programloader.cpp
@@ -0,0 +1,81 @@
+#include "programloader.h"
+#include <exception>
+#include <unistd.h>
+#include <fcntl.h>
+#include <iostream>
+#include <errno.h>
+#include <cstring>
+#include "qtmipsexception.h"
+
+ProgramLoader::ProgramLoader(char *file) {
+    // Initialize elf library
+    if (elf_version(EV_CURRENT) == EV_NONE)
+        throw QTMIPS_EXCEPTION(Input, "Elf library initialization failed", elf_errmsg(-1));
+    // Open source file
+    if ((this->fd = open(file, O_RDONLY, 0)) < 0)
+        throw QTMIPS_EXCEPTION(Input, "Can't open input elf file for reading", std::strerror(errno));
+    // Initialize elf
+    if (!(this->elf = elf_begin(this->fd, ELF_C_READ, NULL)))
+        throw QTMIPS_EXCEPTION(Input, "Elf read begin failed", elf_errmsg(-1));
+    // Check elf kind
+    if (elf_kind(this->elf) != ELF_K_ELF)
+        throw QTMIPS_EXCEPTION(Input, "Invalid input file elf format, plain elf file expected", "");
+
+    if (!gelf_getehdr(this->elf, &this->hdr))
+        throw QTMIPS_EXCEPTION(Input, "Getting elf file header failed", elf_errmsg(-1));
+    // Check elf file format, executable expected, nothing else.
+    if (this->hdr.e_type != ET_EXEC)
+        throw QTMIPS_EXCEPTION(Input, "Invalid input file type", "");
+    // Check elf file architecture, of course only mips is supported.
+    if (this->hdr.e_machine != EM_MIPS)
+        throw QTMIPS_EXCEPTION(Input, "Invalid input file architecture", "");
+    // Check elf file class, only 32bit architecture is supported.
+    int elf_class;
+    if ((elf_class = gelf_getclass(this->elf)) == ELFCLASSNONE)
+        throw QTMIPS_EXCEPTION(Input, "Getting elf class failed", elf_errmsg(-1));
+    if (elf_class != ELFCLASS32)
+        throw QTMIPS_EXCEPTION(Input, "Only supported architecture is 32bit", "");
+    // TODO check endianity!
+
+    // Get number of program sections in elf file
+    if (elf_getphdrnum(this->elf, &this->n_secs))
+        throw QTMIPS_EXCEPTION(Input, "Elf program sections count query failed", elf_errmsg(-1));
+    // Get program sections headers
+    if (!(this->phdrs = elf32_getphdr(this->elf)))
+        throw QTMIPS_EXCEPTION(Input, "Elf program sections get failed", elf_errmsg(-1));
+    // We want only LOAD sections so we create map of those sections
+    for (unsigned i = 1; i < this->n_secs; i++) {
+        // TODO handle endianity
+        if (this->phdrs[i].p_type != PT_LOAD)
+            continue;
+        this->map.push_back(i);
+    }
+    // TODO instead of direct access should we be using sections and elf_data? And if so how to link program header and section?
+}
+
+ProgramLoader::~ProgramLoader() {
+    // Close elf
+    elf_end(this->elf);
+    // Close file
+    close(this->fd);
+}
+
+size_t ProgramLoader::get_nsec() {
+    return this->map.size();
+}
+
+std::uint32_t ProgramLoader::get_address(size_t sec) {
+    SANITY_ASSERT(sec > this->get_nsec(), "Requesting too big section");
+    return this->phdrs[this->map[sec]].p_vaddr;
+}
+
+std::vector<std::uint8_t> ProgramLoader::get_data(size_t sec) {
+    SANITY_ASSERT(sec > this->get_nsec(), "Requesting too big section");
+    std::vector<std::uint8_t> d;
+    char *f = elf_rawfile(this->elf, NULL);
+    size_t phdrs_i = this->map[sec];
+    for (unsigned i = 0; i < this->phdrs[phdrs_i].p_filesz; i++) {
+        d.push_back((std::uint8_t) f[this->phdrs[phdrs_i].p_offset + i]);
+    }
+    return d;
+}
diff --git a/qtmips_machine/programloader.h b/qtmips_machine/programloader.h
new file mode 100644
index 0000000..058e5c1
--- /dev/null
+++ b/qtmips_machine/programloader.h
@@ -0,0 +1,28 @@
+#ifndef PROGRAM_H
+#define PROGRAM_H
+
+#include <unistd.h>
+#include <libelf.h>
+#include <gelf.h>
+#include <cstdint>
+#include <vector>
+
+
+class ProgramLoader {
+public:
+    ProgramLoader(char *file);
+    ~ProgramLoader();
+
+    size_t get_nsec(); // Returns number of loadable sections
+    std::uint32_t get_address(size_t sec); // Get target address for given section
+    std::vector<std::uint8_t> get_data(size_t sec); // Returns bytes of given section
+private:
+    int fd;
+    Elf *elf;
+    GElf_Ehdr hdr; // elf file header
+    size_t n_secs; // number of sections in elf program header
+    Elf32_Phdr *phdrs; // program section headers
+    std::vector<size_t> map; // external index to phdrs index
+};
+
+#endif // PROGRAM_H
diff --git a/qtmips_machine/programmemory.cpp b/qtmips_machine/programmemory.cpp
new file mode 100644
index 0000000..c5ef53a
--- /dev/null
+++ b/qtmips_machine/programmemory.cpp
@@ -0,0 +1,111 @@
+#include "programmemory.h"
+#include <sstream>
+#include "qtmipsexception.h"
+#include "instructions/arithmetic.h"
+#include "instructions/loadstore.h"
+#include "instructions/nop.h"
+#include "instructions/shift.h"
+
+ProgramMemory::ProgramMemory(ProgramLoader *loader, MemoryAccess *memory) {
+    this->memory = memory;
+    // Load program to memory (just dump it byte by byte, decode is done on demand)
+    for (int i = 0; i < loader->get_nsec(); i++) {
+        std::uint32_t base_address = loader->get_address(i);
+        std::vector<std::uint8_t> data = loader->get_data(i);
+        for (auto it = data.begin(); it < data.end(); it++) {
+            memory->write_byte(base_address + i, *it);
+        }
+    }
+}
+
+#define MASKSUB(VAR, LEN, OFFSET) ((VAR & ~((1 << (LEN+OFFSET+1)) - 1)) >> OFFSET)
+
+Instruction *ProgramMemory::at(std::uint32_t address) {
+    if (address % 4)
+        // TODO different exception (unaligned address)
+        throw std::exception();
+    // Read instruction from memory
+    std::uint32_t dt = this->memory->read_word(address);
+
+    // Decode instruction
+    Instruction *inst;
+    std::uint8_t opcode = dt >> 26; // upper 6 bits
+    if (opcode == 0) { // Arithmetic and shift instructions
+        return this->decode_r(dt);
+    } else if (opcode == 2 || opcode == 3) { // Jump instructions
+        return decode_j(dt);
+    } else {
+        return decode_i(dt);
+    }
+}
+
+// TODO implement
+#define I_UNKNOWN(DATA) do { std::stringstream ss; ss << std::hex << DATA; throw QTMIPS_EXCEPTION(UnsupportedInstruction, "Unknown instruction, can't decode", ss.str());  } while(false);
+#define I_UNSUPPORTED(INST) throw QTMIPS_EXCEPTION(UnsupportedInstruction, "Decoded unsupported unstruction", #INST)
+
+Instruction *ProgramMemory::decode_r(std::uint32_t dt) {
+        std::uint8_t func = MASKSUB(dt, 6, 0);
+        if (!func)
+            return new InstructionNop();
+
+        std::uint8_t rs, rt, rd, sa;
+        rs = MASKSUB(dt, 5, 21);
+        rt = MASKSUB(dt, 5, 16);
+        rd = MASKSUB(dt, 5, 11);
+        sa = MASKSUB(dt, 5, 6);
+
+        if (func < 8) { // Shift instructions
+            bool variable = false;
+            enum InstructionShiftT t;
+            switch (func) {
+            case 0:
+                t = IST_LL;
+                break;
+            case 2:
+                t = IST_RL;
+                break;
+            case 3:
+                t = IST_RA;
+                break;
+            case 4:
+                t = IST_LL;
+                variable = true;
+                break;
+            case 6:
+                t = IST_RL;
+                variable = true;
+                break;
+            case 7:
+                t = IST_RA;
+                variable = true;
+                break;
+            default:
+                I_UNKNOWN(dt);
+            }
+            if (variable)
+                return new InstructionShiftVariable(t, rs, rt, rd);
+            else
+                return new InstructionShift(t, rt, rd, sa);
+        } else if (func < 10) { // Jump instructions
+            // TODO
+            I_UNKNOWN(dt);
+        } else { // TODO filter rest
+            I_UNKNOWN(dt);
+        }
+}
+
+Instruction *ProgramMemory::decode_j(std::uint32_t dt) {
+    std::uint32_t address = MASKSUB(dt, 26, 0);
+    // TODO
+    I_UNKNOWN(dt);
+}
+
+Instruction *ProgramMemory::decode_i(std::uint32_t dt) {
+    // InstructionI
+    std::uint8_t rs, rt;
+    rs = MASKSUB(dt, 5, 21);
+    rt = MASKSUB(dt, 5, 16);
+    std::uint16_t immediate = MASKSUB(dt, 16, 0);
+    // TODO
+    I_UNKNOWN(dt);
+}
diff --git a/qtmips_machine/programmemory.h b/qtmips_machine/programmemory.h
new file mode 100644
index 0000000..84b2f31
--- /dev/null
+++ b/qtmips_machine/programmemory.h
@@ -0,0 +1,22 @@
+#ifndef PROGRAMMEMORY_H
+#define PROGRAMMEMORY_H
+
+#include <vector>
+#include "programloader.h"
+#include "memory.h"
+#include "instruction.h"
+
+class ProgramMemory {
+public:
+    ProgramMemory(ProgramLoader *loader, MemoryAccess *memory);
+
+    Instruction *at(std::uint32_t address); // return instruction isntance for given address
+
+private:
+    MemoryAccess *memory;
+    Instruction *decode_r(std::uint32_t dt);
+    Instruction *decode_j(std::uint32_t dt);
+    Instruction *decode_i(std::uint32_t dt);
+};
+
+#endif // PROGRAMMEMORY_H
diff --git a/qtmips_machine/qtmips_machine.pro b/qtmips_machine/qtmips_machine.pro
new file mode 100644
index 0000000..66cb37c
--- /dev/null
+++ b/qtmips_machine/qtmips_machine.pro
@@ -0,0 +1,46 @@
+QT -= gui
+
+TARGET = qtmips_machine
+CONFIG += c++11
+
+TEMPLATE = lib
+
+LIBS += -lelf
+QMAKE_CXXFLAGS += -std=c++0x
+
+DEFINES += QTMIPS_MACHINE_LIBRARY
+DEFINES += QT_DEPRECATED_WARNINGS
+
+SOURCES += \
+    qtmipsmachine.cpp \
+    qtmipsexception.cpp \
+    core.cpp \
+    memory.cpp \
+    instruction.cpp \
+    registers.cpp \
+    programloader.cpp \
+    programmemory.cpp \
+    instructions/arithmetic.cpp \
+    instructions/loadstore.cpp \
+    instructions/shift.cpp \
+    instructions/nop.cpp \
+    instructions/jumpbranch.cpp \
+    utils.cpp \
+    cache.cpp
+
+HEADERS += \
+    qtmipsmachine.h \
+    qtmipsexception.h \
+    core.h \
+    memory.h \
+    instruction.h \
+    registers.h \
+    programloader.h \
+    programmemory.h \
+    instructions/arithmetic.h \
+    instructions/loadstore.h \
+    instructions/shift.h \
+    instructions/nop.h \
+    instructions/jumpbranch.h \
+    utils.h \
+    cache.h
diff --git a/qtmips_machine/qtmips_machine_global.h b/qtmips_machine/qtmips_machine_global.h
new file mode 100644
index 0000000..14cb0ac
--- /dev/null
+++ b/qtmips_machine/qtmips_machine_global.h
@@ -0,0 +1,12 @@
+#ifndef QTMIPS_MACHINE_GLOBAL_H
+#define QTMIPS_MACHINE_GLOBAL_H
+
+#include <QtCore/qglobal.h>
+
+#if defined(QTMIPS_MACHINE_LIBRARY)
+#  define QTMIPS_MACHINESHARED_EXPORT Q_DECL_EXPORT
+#else
+#  define QTMIPS_MACHINESHARED_EXPORT Q_DECL_IMPORT
+#endif
+
+#endif // QTMIPS_MACHINE_GLOBAL_H
diff --git a/qtmips_machine/qtmipsexception.cpp b/qtmips_machine/qtmipsexception.cpp
new file mode 100644
index 0000000..2ce7ae5
--- /dev/null
+++ b/qtmips_machine/qtmipsexception.cpp
@@ -0,0 +1,60 @@
+#include "qtmipsexception.h"
+#include <iostream>
+#include <cstring>
+
+QtMipsException::QtMipsException(QTMIPS_ARGS_COMMON) {
+    this->reason = reason;
+    this->ext = ext;
+    this->file = file;
+    this->line = line;
+}
+
+const char *QtMipsException::what() const throw() {
+    std::string message = this->msg(true);
+    char * cstr = new char [message.length()+1];
+    std::strcpy (cstr, message.c_str());
+    return cstr;
+}
+
+std::string QtMipsException::msg(bool pos) const {
+    std::string message;
+    if (pos)
+        message += std::string("(") + std::string(this->file) + std::string(":") + std::to_string(this->line) + std::string(") ");
+    message += this->reason;
+    if (!this->ext.empty()) {
+        message += std::string(": ");
+        message += this->ext;
+    }
+    return message;
+}
+
+
+QtMipsExceptionInput::QtMipsExceptionInput(QTMIPS_ARGS_COMMON)
+        : QtMipsException(reason, ext, file, line) {
+    return;
+}
+
+QtMipsExceptionRuntime::QtMipsExceptionRuntime(QTMIPS_ARGS_COMMON)
+        : QtMipsException(reason, ext, file, line) {
+    return;
+}
+
+QtMipsExceptionUnsupportedInstruction::QtMipsExceptionUnsupportedInstruction(QTMIPS_ARGS_COMMON)
+        : QtMipsExceptionRuntime(reason, ext, file, line) {
+    return;
+}
+
+QtMipsExceptionUnalignedJump::QtMipsExceptionUnalignedJump(QTMIPS_ARGS_COMMON)
+        : QtMipsExceptionRuntime(reason, ext, file, line) {
+    return;
+}
+
+QtMipsExceptionOutOfMemoryAccess::QtMipsExceptionOutOfMemoryAccess(QTMIPS_ARGS_COMMON)
+        : QtMipsExceptionRuntime(reason, ext, file, line) {
+    return;
+}
+
+QtMipsExceptionSanity::QtMipsExceptionSanity(QTMIPS_ARGS_COMMON)
+        : QtMipsException(reason, ext, file, line) {
+    return;
+}
diff --git a/qtmips_machine/qtmipsexception.h b/qtmips_machine/qtmipsexception.h
new file mode 100644
index 0000000..bfaa788
--- /dev/null
+++ b/qtmips_machine/qtmipsexception.h
@@ -0,0 +1,63 @@
+#ifndef QTMIPSEXCEPTION_H
+#define QTMIPSEXCEPTION_H
+
+#include <exception>
+#include <string>
+
+#define QTMIPS_EXCEPTION(TYPE, REASON, EXT) (QtMipsException ## TYPE (std::string(REASON), std::string(EXT), std::string(__FILE__), __LINE__))
+#define QTMIPS_ARGS_COMMON std::string reason, std::string ext, std::string file, int line
+
+// Base exception for all machine ones
+class QtMipsException : public std::exception {
+public:
+    QtMipsException(QTMIPS_ARGS_COMMON);
+    const char *what() const throw();
+    std::string msg(bool pos) const;
+protected:
+    std::string reason, ext, file;
+    int line;
+};
+
+// Exception durring input loading
+class QtMipsExceptionInput : public QtMipsException {
+public:
+    QtMipsExceptionInput(QTMIPS_ARGS_COMMON);
+};
+
+// Exceptions caused by machine invalid input or unsupported action
+class QtMipsExceptionRuntime : public QtMipsException {
+public:
+    QtMipsExceptionRuntime(QTMIPS_ARGS_COMMON);
+};
+
+// Decoded instruction is not supported.
+// This can be cause by really using some unimplemented instruction or because of problems in instruction decode.
+class QtMipsExceptionUnsupportedInstruction : public QtMipsExceptionRuntime {
+public:
+    QtMipsExceptionUnsupportedInstruction(QTMIPS_ARGS_COMMON);
+};
+
+// Instruction is jumping to unaligned address (ADDR%4!=0)
+// This can be caused by bug or by user program as it can be jumping relative to register
+// This shouldn't be happening with non-register jumps as those should be verified by compiler
+class QtMipsExceptionUnalignedJump : public QtMipsExceptionRuntime {
+public:
+    QtMipsExceptionUnalignedJump(QTMIPS_ARGS_COMMON);
+};
+
+// Trying to access address outside of the memory
+// As we are simulating whole 32bit memory address space then this is most probably QtMips bug if raised not program.
+class QtMipsExceptionOutOfMemoryAccess : public QtMipsExceptionRuntime {
+public:
+    QtMipsExceptionOutOfMemoryAccess(QTMIPS_ARGS_COMMON);
+};
+
+// This is sanity check exception
+class QtMipsExceptionSanity : public QtMipsException {
+public:
+    QtMipsExceptionSanity(QTMIPS_ARGS_COMMON);
+};
+
+#define SANITY_ASSERT(COND, MSG) do { if (!(COND)) throw QTMIPS_EXCEPTION(Sanity, "Sanity check failed (" #COND ")", MSG); } while (false)
+
+#endif // QTMIPSEXCEPTION_H
diff --git a/qtmips_machine/qtmipsmachine.cpp b/qtmips_machine/qtmipsmachine.cpp
new file mode 100644
index 0000000..0fc207c
--- /dev/null
+++ b/qtmips_machine/qtmipsmachine.cpp
@@ -0,0 +1,5 @@
+#include "qtmipsmachine.h"
+
+QtMipsMachine::QtMipsMachine(char *file) {
+    this->loader = new ProgramLoader(file);
+}
diff --git a/qtmips_machine/qtmipsmachine.h b/qtmips_machine/qtmipsmachine.h
new file mode 100644
index 0000000..af981b3
--- /dev/null
+++ b/qtmips_machine/qtmipsmachine.h
@@ -0,0 +1,25 @@
+#ifndef QTMIPSMACHINE_H
+#define QTMIPSMACHINE_H
+
+#include <QObject>
+
+#include "qtmipsexception.h"
+#include "programloader.h"
+#include "core.h"
+// TODO piplined core
+
+class QtMipsMachine : QObject {
+    Q_OBJECT
+public:
+    QtMipsMachine(char *file);
+
+    // TODO handle speed
+    void play();
+    void pause();
+    void step();
+    void restart();
+private:
+    ProgramLoader *loader;
+};
+
+#endif // QTMIPSMACHINE_H
diff --git a/qtmips_machine/registers.cpp b/qtmips_machine/registers.cpp
new file mode 100644
index 0000000..514987a
--- /dev/null
+++ b/qtmips_machine/registers.cpp
@@ -0,0 +1,66 @@
+#include "registers.h"
+#include "qtmipsexception.h"
+#include "utils.h"
+
+// TODO should this be configurable?
+//////////////////////////////////////////////////////////////////////////////
+/// Program counter initial value
+#define PC_INIT 0x80020000
+//////////////////////////////////////////////////////////////////////////////
+
+Registers::Registers() {
+    this->pc = PC_INIT; // Initialize to beginning program section
+    for (int i = 0; i < 31; i++)
+        this->gp[i] = 0;
+    this->hi = this->lo = 0;
+}
+
+std::uint32_t Registers::read_pc() {
+    return this->pc;
+}
+
+std::uint32_t Registers::pc_inc() {
+    this->pc += 4;
+    return this->pc;
+}
+
+std::uint32_t Registers::pc_jmp(std::int32_t offset) {
+    if (offset % 4)
+        throw QTMIPS_EXCEPTION(UnalignedJump, "Trying to jump by unaligned offset", to_string_hex(offset));
+    this->pc += offset;
+    return this->pc;
+}
+
+void Registers::pc_abs_jmp(std::uint32_t address) {
+    if (address % 4)
+        throw QTMIPS_EXCEPTION(UnalignedJump, "Trying to jump to unaligned address", to_string_hex(address));
+    this->pc = address;
+}
+
+std::uint32_t Registers::read_gp(std::uint8_t i) {
+    SANITY_ASSERT(i < 32, std::string("Trying to read from register ") + std::to_string(i));
+    if (!i) // $0 always reads as 0
+        return 0;
+    return this->gp[i - 1];
+}
+
+void Registers::write_gp(std::uint8_t i, std::uint32_t value) {
+    SANITY_ASSERT(i < 32, std::string("Trying to write to register ") + std::to_string(i));
+    if (i == 0) // Skip write to $0
+        return;
+    this->gp[i - 1] = value;
+}
+
+std::uint32_t Registers::read_hi_lo(bool hi) {
+    if (hi)
+        return this->hi;
+    else
+        return this->lo;
+}
+
+void Registers::write_hi_lo(bool hi, std::uint32_t value) {
+    if (hi)
+        this->hi = value;
+    else
+        this->lo = value;
+}
diff --git a/qtmips_machine/registers.h b/qtmips_machine/registers.h
new file mode 100644
index 0000000..a550f4a
--- /dev/null
+++ b/qtmips_machine/registers.h
@@ -0,0 +1,31 @@
+#ifndef REGISTERS_H
+#define REGISTERS_H
+
+#include <QObject>
+#include <cstdint>
+
+class Registers : public QObject {
+    Q_OBJECT
+public:
+    Registers();
+
+    std::uint32_t read_pc(); // Return current value of program counter
+    std::uint32_t pc_inc(); // Increment program counter by four bytes
+    std::uint32_t pc_jmp(std::int32_t offset); // Relative jump from current location in program counter
+    void pc_abs_jmp(std::uint32_t address); // Absolute jump in program counter (write to pc)
+
+    std::uint32_t read_gp(std::uint8_t i); // Read general-purpose register
+    void write_gp(std::uint8_t i, std::uint32_t value); // Write general-purpose register
+    std::uint32_t read_hi_lo(bool hi); // true - read HI / false - read LO
+    void write_hi_lo(bool hi, std::uint32_t value);
+
+signals:
+    // TODO signals
+
+private:
+    std::uint32_t gp[31]; // general-purpose registers ($0 is intentionally skipped)
+    std::uint32_t hi, lo;
+    std::uint32_t pc; // program counter
+};
+
+#endif // REGISTERS_H
diff --git a/qtmips_machine/tests/testmemory.cpp b/qtmips_machine/tests/testmemory.cpp
new file mode 100644
index 0000000..991e1f1
--- /dev/null
+++ b/qtmips_machine/tests/testmemory.cpp
@@ -0,0 +1,61 @@
+#include "tst_machine.h"
+#include "memory.h"
+
+void MachineTests::memory_data() {
+    QTest::addColumn<std::uint32_t>("address");
+
+    QTest::newRow("memory begin") << (std::uint32_t)0x00;
+    QTest::newRow("memory end") << (std::uint32_t)0xFFFFFFFC;
+    QTest::newRow("memory midle start") << (std::uint32_t)0xFFFF00;
+    QTest::newRow("memory midle end") << (std::uint32_t)0xFFFFFF;
+}
+
+void MachineTests::memory() {
+    Memory m;
+
+   QFETCH(std::uint32_t, address);
+
+   // Uninitialize memory should read as zero
+   QCOMPARE(m.read_byte(address), (std::uint8_t)0);
+   QCOMPARE(m.read_hword(address), (std::uint16_t)0);
+   QCOMPARE(m.read_word(address), (std::uint32_t)0);
+   // Just a byte
+   m.write_byte(address, 0x42);
+   QCOMPARE(m.read_byte(address), (std::uint8_t)0x42);
+   // Half word
+   m.write_hword(address, 0x4243);
+   QCOMPARE(m.read_hword(address), (std::uint16_t)0x4243);
+   // Word
+   m.write_word(address, 0x42434445);
+   QCOMPARE(m.read_word(address), (std::uint32_t)0x42434445);
+}
+
+void MachineTests::memory_section_data() {
+    QTest::addColumn<std::uint32_t>("address");
+
+    QTest::newRow("memory begin") << (std::uint32_t)0x00;
+    QTest::newRow("memory end") << (std::uint32_t)0xFFFFFFFF;
+    QTest::newRow("memory midle start") << (std::uint32_t)0xFFFF00;
+    QTest::newRow("memory midle end") << (std::uint32_t)0xFFFFFF;
+}
+
+void MachineTests::memory_section() {
+   Memory m;
+
+   QFETCH(std::uint32_t, address);
+
+   // First section shouldn't exists
+   QCOMPARE(m.get_section(address, false), (MemorySection*)nullptr);
+   // Create section
+   MemorySection *s = m.get_section(address, true);
+   QVERIFY(s != nullptr);
+
+   // Write some data to memory
+   m.write_byte(address, 0x42);
+   // Read it trough section (mask bits outside of the memory section)
+   QCOMPARE(s->read_byte(address & ((1 << MEMORY_SECTION_BITS)  - 1)), (std::uint8_t)0x42);
+   // Write some other data trough section
+   s->write_byte(address & ((1 << MEMORY_SECTION_BITS)  - 1), 0x66);
+   // Read trough memory
+   QCOMPARE(m.read_byte(address), (std::uint8_t)0x66);
+}
diff --git a/qtmips_machine/tests/testregisters.cpp b/qtmips_machine/tests/testregisters.cpp
new file mode 100644
index 0000000..4430beb
--- /dev/null
+++ b/qtmips_machine/tests/testregisters.cpp
@@ -0,0 +1,39 @@
+#include "tst_machine.h"
+#include <qtmipsexception.h>
+#include <registers.h>
+
+void MachineTests::registers_gp0() {
+    Registers r;
+    QCOMPARE(r.read_gp(0), (unsigned)0);
+    r.write_gp(0, 0xff);
+    QCOMPARE(r.read_gp(0), (unsigned)0);
+}
+
+void MachineTests::registers_rw_gp() {
+    Registers r;
+    for (int i = 1; i < 32; i++) {
+        r.write_gp(i, 0xf00 + i);
+        QCOMPARE(r.read_gp(i), (unsigned)(0xf00 + i));
+    }
+}
+
+void MachineTests::registers_rw_hi_lo() {
+    Registers r;
+    r.write_hi_lo(false, 0xee);
+    r.write_hi_lo(true, 0xaa);
+    QCOMPARE(r.read_hi_lo(false), (unsigned)0xee);
+    QCOMPARE(r.read_hi_lo(true), (unsigned)0xaa);
+}
+
+void MachineTests::registers_pc() {
+    Registers r;
+    QCOMPARE(r.read_pc(), (unsigned)0x80020000); // Check initial pc address
+    QCOMPARE(r.pc_inc(), (unsigned)0x80020004);
+    QCOMPARE(r.pc_inc(), (unsigned)0x80020008);
+    QCOMPARE(r.pc_jmp(-0x8), (unsigned)0x80020000);
+    QCOMPARE(r.pc_jmp(0xC), (unsigned)0x8002000C);
+    r.pc_abs_jmp(0x80020100);
+    QCOMPARE(r.read_pc(), (unsigned)0x80020100);
+    QVERIFY_EXCEPTION_THROWN(r.pc_jmp(0x1), QtMipsExceptionUnalignedJump);
+    QVERIFY_EXCEPTION_THROWN(r.pc_abs_jmp(0x80020101), QtMipsExceptionUnalignedJump);
+}
diff --git a/qtmips_machine/tests/tests.pro b/qtmips_machine/tests/tests.pro
new file mode 100644
index 0000000..9477e08
--- /dev/null
+++ b/qtmips_machine/tests/tests.pro
@@ -0,0 +1,24 @@
+QT += testlib
+QT -= gui
+
+TARGET = tst_machine
+CONFIG += console
+CONFIG -= app_bundle
+CONFIG += c++11
+
+TEMPLATE = app
+
+LIBS += -L$$OUT_PWD/../ -lqtmips_machine
+INCLUDEPATH += $$PWD/..
+DEPENDPATH += $$PWD/..
+QMAKE_CXXFLAGS += -std=c++0x
+
+DEFINES += QT_DEPRECATED_WARNINGS
+
+SOURCES += tst_machine.cpp \
+    testmemory.cpp \
+    testregisters.cpp
+
+HEADERS += tst_machine.h
+
+DEFINES += SRCDIR=\\\"$$PWD/\\\"
diff --git a/qtmips_machine/tests/tst_machine.cpp b/qtmips_machine/tests/tst_machine.cpp
new file mode 100644
index 0000000..d5fc354
--- /dev/null
+++ b/qtmips_machine/tests/tst_machine.cpp
@@ -0,0 +1,3 @@
+#include "tst_machine.h"
+
+QTEST_GUILESS_MAIN(MachineTests)
diff --git a/qtmips_machine/tests/tst_machine.h b/qtmips_machine/tests/tst_machine.h
new file mode 100644
index 0000000..214ab88
--- /dev/null
+++ b/qtmips_machine/tests/tst_machine.h
@@ -0,0 +1,21 @@
+#ifndef TST_MACHINE_H
+#define TST_MACHINE_H
+
+#include <QtTest>
+
+class MachineTests : public QObject {
+    Q_OBJECT
+private Q_SLOTS:
+    // Registers
+    void registers_gp0();
+    void registers_rw_gp();
+    void registers_rw_hi_lo();
+    void registers_pc();
+    // Memory
+    void memory();
+    void memory_data();
+    void memory_section();
+    void memory_section_data();
+};
+
+#endif // TST_MACHINE_H
diff --git a/qtmips_machine/utils.cpp b/qtmips_machine/utils.cpp
new file mode 100644
index 0000000..dfe8c2a
--- /dev/null
+++ b/qtmips_machine/utils.cpp
@@ -0,0 +1,30 @@
+#include "utils.h"
+#include <sstream>
+
+#define TO_STR_HEX do { std::stringstream ss; ss << std::hex << v; return std::string(ss.str()); } while (false)
+
+std::string to_string_hex(int v) {
+    TO_STR_HEX;
+}
+
+std::string to_string_hex(unsigned v) {
+    TO_STR_HEX;
+}
+
+std::string to_string_hex(long v) {
+    TO_STR_HEX;
+}
+
+std::string to_string_hex(unsigned long v) {
+    TO_STR_HEX;
+}
+
+std::string to_string_hex(long long v) {
+    TO_STR_HEX;
+}
+
+std::string to_string_hex(unsigned long long v) {
+    TO_STR_HEX;
+}
+
+#undef TO_STR_HEX
diff --git a/qtmips_machine/utils.h b/qtmips_machine/utils.h
new file mode 100644
index 0000000..151e1d0
--- /dev/null
+++ b/qtmips_machine/utils.h
@@ -0,0 +1,13 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <string>
+
+std::string to_string_hex(int);
+std::string to_string_hex(unsigned);
+std::string to_string_hex(long);
+std::string to_string_hex(unsigned long);
+std::string to_string_hex(long long);
+std::string to_string_hex(unsigned long long);
+
+#endif // UTILS_H
diff --git a/tests/machine-unit-tests/test.sh b/tests/machine-unit-tests/test.sh
new file mode 100755
index 0000000..c916f74
--- /dev/null
+++ b/tests/machine-unit-tests/test.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+TEST_NAME="machine-unit-test"
+
+# Load common test shell functions
+. "$(dirname "$0")/../test.sh"
+
+# Build tests binary
+qtmips_make sub-qtmips_machine-tests
+
+# Run unit tests
+qtmips_run qtmips_machine/tests/tst_machine || echo_fail "Test $TEST_NAME failed!"
diff --git a/tests/registers/Makefile b/tests/registers/Makefile
new file mode 100644
index 0000000..4b5ebdc
--- /dev/null
+++ b/tests/registers/Makefile
@@ -0,0 +1,5 @@
+include ../test.mk
+
+SRC_registers = registers.S
+
+$(eval $(call MIPS_ELF,registers))
diff --git a/tests/registers/registers.S b/tests/registers/registers.S
new file mode 100644
index 0000000..64ff5ac
--- /dev/null
+++ b/tests/registers/registers.S
@@ -0,0 +1,8 @@
+.text
+.globl _start		  
+
+_start:
+	j main
+
+main:
+	addi $1, $0, 6
diff --git a/tests/registers/test.sh b/tests/registers/test.sh
new file mode 100755
index 0000000..2ace7cd
--- /dev/null
+++ b/tests/registers/test.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+TEST_NAME="registers"
+
+# Load common test shell functions
+. "$(dirname "$0")/../test.sh"
+
+# Build cli binary
+qtmips_make sub-qtmips_cli
+
+# Compile mips binary
+mips_make_test
+
+# Run test
+qtmips_run qtmips_cli/qtmips_cli "$TEST_DIR/registers" \
+	|| echo_fail "Test $TEST_NAME failed!"
diff --git a/tests/run-all.sh b/tests/run-all.sh
new file mode 100755
index 0000000..9c57391
--- /dev/null
+++ b/tests/run-all.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+# Run all tests
+set -e
+
+for T in $(find "$(dirname "$0")" -name test.sh -type f -executable); do
+	timeout -k 120 60 "$T"
+done
diff --git a/tests/test.mk b/tests/test.mk
new file mode 100644
index 0000000..c05a72b
--- /dev/null
+++ b/tests/test.mk
@@ -0,0 +1,39 @@
+MAKEFLAGS += --no-builtin-rules
+
+# Output path
+O ?= .
+
+#MIPS_CFLAGS += -Wall
+MIPS_LDFLAGS += -nostdlib -nodefaultlibs -nostartfiles -Wl,-Ttext,0x80020000
+
+.PHONY: all
+all::
+	@
+
+.PHONY: clean
+clean::
+	@
+
+
+define MIPS_ELF
+
+ifndef MIPS_PREFIX
+	$$(error Toolchain prefix have to be passed in MIPS_PREFIX variable)
+endif
+
+OBJ_$(1):=$$(patsubst %.S,$$(O)/%.o,$$(SRC_$(1)))
+$$(info $$(OBJ_$(1)))
+
+all:: $$(O)/$(1)
+
+$$(O)/$(1): $$(OBJ_$(1))
+	$$(MIPS_PREFIX)-gcc $$(MIPS_LDFLAGS) -o $$@ $$^
+
+$$(OBJ_$(1)): $$(O)/%.o: %.S
+	$$(MIPS_PREFIX)-gcc $$(MIPS_CFLAGS) -c -x assembler-with-cpp -o $$@ $$<
+
+clean::
+	$(RM) $$(OBJ_$(1))
+	$(RM) $$(O)/$(1)
+
+endef
diff --git a/tests/test.sh b/tests/test.sh
new file mode 100644
index 0000000..7145a0c
--- /dev/null
+++ b/tests/test.sh
@@ -0,0 +1,99 @@
+# Enable shell exit on failure
+set -e
+
+## Colored echo function ########################################################
+
+echo_head() {
+	echo -e "\e[1;34m-- $@ --\e[0m" >&2
+}
+
+echo_msg() {
+	echo -e "\e[1;33m$@\e[0m" >&2
+}
+
+echo_fail() {
+	echo -e "\e[1;31m$@\e[0m" >&2
+	exit 1
+}
+
+## Check and init test ##########################################################
+
+# Check if test name is defined
+[ -n "$TEST_NAME" ] || echo_fail "Test name is not defined! Define TEST_NAME variable in test script."
+# Report user what test is going to be executed
+echo_head "Running test $TEST_NAME"
+
+## Define some variables ########################################################
+
+# Store base directory from which we started test script
+PWD_DIR="$(pwd)"
+# Define path to test sources
+TEST_SRC="$(dirname "$(readlink -f "$0")")"
+
+# Get project root.
+# As we want to have script calling this anywhere, we have to do some more work to
+# get project root. But we know content of root and so we can use that to locate
+# it and we know that test source directory is part of tree so it's under root.
+PROJECT_ROOT="$TEST_SRC"
+while [ -n "$PROJECT_ROOT" ] && ! [ \
+		-f "$PROJECT_ROOT/LICENSE" -a \
+		-f "$PROJECT_ROOT/README.md" -a \
+		-d "$PROJECT_ROOT/qtmips_gui" -a \
+		-d "$PROJECT_ROOT/qtmips_cli" -a \
+		-d "$PROJECT_ROOT/qtmips_machine" \
+		]; do
+	PROJECT_ROOT="${PROJECT_ROOT%/*}"
+done
+[ -n "$PROJECT_ROOT" ] || echo_fail "Project root not found!!"
+
+# Define root for all tests
+# We are little bit clever about it. If we detect that we are in project tree we
+# will use same directory every time. Otherwise we use current working directory
+# where we create test_dir directory.
+if [ -n "${PWD_DIR#$PROJECT_ROOT}" ]; then
+	TEST_DIR_ROOT="$PROJECT_ROOT/test_dir"
+else
+	TEST_DIR_ROOT="$PWD_DIR/test_dir"
+fi
+
+# Directory where qtmips will be build
+BUILD_DIR="$TEST_DIR_ROOT/build"
+
+# Directory where test should be build and executed
+TEST_DIR="$TEST_DIR_ROOT/$TEST_NAME"
+
+## Helper functions for building and running project ############################
+
+qtmips_make() {
+	mkdir -p "$BUILD_DIR"
+	pushd "$BUILD_DIR" >/dev/null
+	/usr/lib64/qt5/bin/qmake "$PROJECT_ROOT" || echo_fail "QtMips qmake failed!"
+	make "$@" || echo_fail "QtMips build failed! (target: $@)"
+	popd >/dev/null
+}
+
+qtmips_run() {
+	local BIN="$BUILD_DIR/$1"
+	shift
+	LD_LIBRARY_PATH="$BUILD_DIR/qtmips_machine" "$BIN" "$@"
+}
+
+## Mips elf binary compilation ##################################################
+
+MIPS_COMPILER="$TEST_DIR_ROOT/mips-qtmips-elf"
+
+mips_compiler() {
+	# Skip if we have compiler already
+	[ ! -d "$MIPS_COMPILER" ] || return 0
+	# Otherwise compile it
+	mkdir -p "$TEST_DIR_ROOT"
+	pushd "$TEST_DIR_ROOT" >/dev/null
+	"$PROJECT_ROOT"/compiler/compile.sh
+	popd >/dev/null
+}
+
+mips_make_test() {
+	mips_compiler
+	mkdir -p "$TEST_DIR"
+	PATH="$PATH:$MIPS_COMPILER/bin" make -C "$TEST_SRC" O="$TEST_DIR" MIPS_PREFIX="mips-qtmips-elf" "$@"
+}