diff --git a/.cargo/config.toml b/.cargo/config.toml new file mode 100644 index 0000000..5cdc3c1 --- /dev/null +++ b/.cargo/config.toml @@ -0,0 +1,58 @@ +# --- +# Configuration for Cargo inherited by all virtual workspaces +# --- + +# The Nintendo 64 is not an officially supported platform by Rust. To target +# this platform, normally available out of the box modules and intrinsics for +# officially supported platforms (e.g. memset) must be compiled alongside the +# packages in this repo. +# +# Docs: +# - https://doc.rust-lang.org/cargo/reference/unstable.html#build-std +# - https://doc.rust-lang.org/cargo/reference/unstable.html#build-std-features +# - https://github.com/rust-lang/compiler-builtins +# +[unstable] +build-std = [ + "core", + "compiler_builtins", +] +build-std-features = [ + "compiler-builtins-mem", +] + +# Linking "freestanding" binaries requires special incantations on most platforms, +# see: https://os.phil-opp.com/freestanding-rust-binary/#linker-errors +# +[target.'cfg(target_os = "linux")'] +rustflags = [ + "-C", "link-arg=-nostartfiles", +] + +[target.'cfg(target_os = "macos")'] +rustflags = [ + "-C", "link-args=-e __start -static -nostartfiles", +] + +# This project targets the platform's central processor and graphics coprocessor, +# which have different microarchitectures (despite both being MIPS processors). +# Target-specific rustc flags are defined below if they're needed. Example args +# useful for debugging code generate are left commented. +# +[target.mips-ultra64-cpu] +rustflags = [ + # "--verbose", + # "--print", "link-args", + # "--emit=llvm-ir,llvm-bc", + # "-C", "save-temps", +] + +[target.mips-ultra64-rcp] +rustflags = [ + # "--verbose", + # "--print", "link-args", + # "--emit=llvm-ir,llvm-bc", + # "-C", "save-temps", +] + +# eof diff --git a/.vscode/settings.json b/.vscode/settings.json index e69de29..69d5d05 100644 --- a/.vscode/settings.json +++ b/.vscode/settings.json @@ -0,0 +1,5 @@ +{ + "rust-analyzer.linkedProjects": [ + "${workspaceFolder}/Cargo.toml" + ] +} diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..7d1d72f --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,21 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "cpu-kernel" +version = "0.0.1" +dependencies = [ + "lib-kernel", +] + +[[package]] +name = "lib-kernel" +version = "0.0.1" + +[[package]] +name = "rcp-kernel" +version = "0.0.1" +dependencies = [ + "lib-kernel", +] diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..2a7b614 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,22 @@ +[workspace] +resolver = "2" +members = [ + "lib-kernel", + "rcp-kernel", + "cpu-kernel", +] + +[workspace.package] +version = "0.0.1" +edition = "2021" +license = "GPL-3.0+" +repository = "https://github.com/xSetech/Summer" +authors = [ + "Seth Junot ", +] + +[profile.dev] +panic = "abort" + +[profile.release] +panic = "abort" diff --git a/LICENSE b/LICENSE deleted file mode 100644 index f288702..0000000 --- a/LICENSE +++ /dev/null @@ -1,674 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. - 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. 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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. - - - Copyright (C) - - 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 . - -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: - - Copyright (C) - 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 -. - - 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 -. diff --git a/LICENSE.md b/LICENSE.md new file mode 100644 index 0000000..496acdb --- /dev/null +++ b/LICENSE.md @@ -0,0 +1,675 @@ +# GNU GENERAL PUBLIC LICENSE + +Version 3, 29 June 2007 + +Copyright (C) 2007 Free Software Foundation, Inc. + + +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. + + + Copyright (C) + + 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 . + +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: + + Copyright (C) + 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 . + +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 . diff --git a/README.md b/README.md index 3e6bfdf..66726af 100644 --- a/README.md +++ b/README.md @@ -1,8 +1,48 @@ -# 🏖️ +# 🏖️ Summer This repo contains work in progress homebrew for the Nintendo 64 intended as a submission to the summer-themed N64brew Game Jam 2023. +## Repo Layout + +The repo contains three crates that target two different architectures. + +### 3 Crates + +1. `cpu-kernel`, a kernel that runs on the CPU. +2. `rcp-kernel`, a kernel that runs on the RCP. +3. `lib-kernel`, a library supporting both kernels. + +Most of the code critical for actual gameplay lives in `lib-kernel`. + +The other two crates exist to make compiling for each architecture a bit easier +when using Cargo as the build system. + +### 2 Microarchitectures + +The Nintendo 64 contains two MIPS processors with different microarchitectures. + +1. The CPU, which is basically a VR4300. +2. The RCP, which is... a lobotimized R4000 with a 32-bit ISA extended for + vector math and video output. + +## Building + +### Requirements + +- Rust, patched to support the N32 MIPS ABI. +- A typical Unix terminal, like Bash or zsh +- ... maybe LLVM w/ LLD? + +### Overview and How-to + +An end-to-end build happens in two steps: + +1. The two kernels are built via `cargo build -Z build-std=core` in each crate directory. +2. A ROM (.z64) is formed from the built kernels via `assemble-rom.sh` + +You can run all build everything end-to-end by running `build.sh` + ## License -This work is licensed under the GNU GPL version 3. +This work is available under the GNU General Public License v3.0 or later, see LICENSE.md diff --git a/cpu-kernel/.cargo/config.toml b/cpu-kernel/.cargo/config.toml new file mode 100644 index 0000000..49cf26f --- /dev/null +++ b/cpu-kernel/.cargo/config.toml @@ -0,0 +1,2 @@ +[build] +target = "../targets/mips-ultra64-cpu.json" diff --git a/cpu-kernel/Cargo.toml b/cpu-kernel/Cargo.toml new file mode 100644 index 0000000..3f75a9d --- /dev/null +++ b/cpu-kernel/Cargo.toml @@ -0,0 +1,16 @@ +[package] +name = "cpu-kernel" +description = "(Summer) Kernel that runs on the CPU" + +version.workspace = true +license.workspace = true +authors.workspace = true +edition.workspace = true +repository.workspace = true + +[[bin]] +name = "cpu-kernel" +path = "src/bin/main.rs" + +[dependencies] +lib-kernel = { path = "../lib-kernel" } diff --git a/cpu-kernel/src/bin/main.rs b/cpu-kernel/src/bin/main.rs new file mode 100644 index 0000000..41819bc --- /dev/null +++ b/cpu-kernel/src/bin/main.rs @@ -0,0 +1,16 @@ +//! CPU kernel + +#![no_std] +#![no_main] + +use core::panic::PanicInfo; + +#[no_mangle] +pub extern "C" fn __start() -> ! { + loop {} +} + +#[panic_handler] +fn panic(_info: &PanicInfo) -> ! { + loop {} +} diff --git a/lib-kernel/.cargo/config.toml b/lib-kernel/.cargo/config.toml new file mode 100644 index 0000000..751027c --- /dev/null +++ b/lib-kernel/.cargo/config.toml @@ -0,0 +1,5 @@ +[build] +target = [ + "../targets/mips-ultra64-cpu.json", + "../targets/mips-ultra64-rcp.json", +] diff --git a/lib-kernel/Cargo.toml b/lib-kernel/Cargo.toml new file mode 100644 index 0000000..6a7610f --- /dev/null +++ b/lib-kernel/Cargo.toml @@ -0,0 +1,16 @@ +[package] +name = "lib-kernel" +description = "(Summer) Library to support kernels" + +version.workspace = true +license.workspace = true +authors.workspace = true +edition.workspace = true +repository.workspace = true + +[lib] +name = "lib_kernel" +path = "src/lib.rs" +crate-type = [ + "rlib" +] diff --git a/lib-kernel/src/lib.rs b/lib-kernel/src/lib.rs new file mode 100644 index 0000000..6756afd --- /dev/null +++ b/lib-kernel/src/lib.rs @@ -0,0 +1,7 @@ +//! Kernel library + +#![no_std] + +pub fn placeholder() { + return; +} diff --git a/rcp-kernel/.cargo/config.toml b/rcp-kernel/.cargo/config.toml new file mode 100644 index 0000000..7f6b892 --- /dev/null +++ b/rcp-kernel/.cargo/config.toml @@ -0,0 +1,2 @@ +[build] +target = "../targets/mips-ultra64-rcp.json" diff --git a/rcp-kernel/Cargo.toml b/rcp-kernel/Cargo.toml new file mode 100644 index 0000000..1c75157 --- /dev/null +++ b/rcp-kernel/Cargo.toml @@ -0,0 +1,16 @@ +[package] +name = "rcp-kernel" +description = "(Summer) Kernel that runs on the RCP" + +version.workspace = true +license.workspace = true +authors.workspace = true +edition.workspace = true +repository.workspace = true + +[[bin]] +name = "rcp-kernel" +path = "src/bin/main.rs" + +[dependencies] +lib-kernel = { path = "../lib-kernel" } diff --git a/rcp-kernel/src/bin/main.rs b/rcp-kernel/src/bin/main.rs new file mode 100644 index 0000000..f0b6a38 --- /dev/null +++ b/rcp-kernel/src/bin/main.rs @@ -0,0 +1,16 @@ +//! RCP kernel + +#![no_std] +#![no_main] + +use core::panic::PanicInfo; + +#[no_mangle] +pub extern "C" fn __start() -> ! { + loop {} +} + +#[panic_handler] +fn panic(_info: &PanicInfo) -> ! { + loop {} +} diff --git a/rust-toolchain.toml b/rust-toolchain.toml new file mode 100644 index 0000000..5c280d4 --- /dev/null +++ b/rust-toolchain.toml @@ -0,0 +1,10 @@ +[toolchain] +channel = "n64-dev-toolchain" +profile = "minimal" +components = [ + "clippy", + "rust-analyzer", + "rust-src", + "rustc-dev", + "rustfmt", +] diff --git a/scripts/assemble-rom.sh b/scripts/assemble-rom.sh new file mode 100755 index 0000000..ec86128 --- /dev/null +++ b/scripts/assemble-rom.sh @@ -0,0 +1,30 @@ +#!/usr/bin/env bash + +set -e +set -u +set -o pipefail + +if [[ ! -e cpu-kernel/ ]]; then + echo "fail: ./cpu-kernel/ not found!" >&2 + echo "note: call this script from the repo root" >&2 + exit 1 +fi + +# Built outputs: +# target/mips-ultra64-rcp/... +# target/mips-ultra64-cpu/... + +echo "Assembling ROM..." + +# TODO +# +# How this might work: +# +# - Craft the ROM header, place up to 0x40 +# - Remap IPL3 from RCP kernel ELF up to 0x1000 +# - Concatenate the two kernels, RCP kernel first +# +echo "ROM assembly unimplemented!" >&2 +exit 1 + +# eof diff --git a/scripts/build.sh b/scripts/build.sh new file mode 100755 index 0000000..d3999ee --- /dev/null +++ b/scripts/build.sh @@ -0,0 +1,29 @@ +#!/usr/bin/env bash + +set -e +set -u +set -o pipefail + +if [[ ! -e cpu-kernel/ ]]; then + echo "fail: ./cpu-kernel/ not found!" >&2 + echo "note: call this script from the repo root" >&2 + exit 1 +fi + +# Step 1: Build the kernels + +echo "Building the CPU kernel..." +cd cpu-kernel/ +cargo build -Z build-std=core --color always +cd - >/dev/null + +echo "Building the RCP kernel..." +cd rcp-kernel/ +cargo build -Z build-std=core --color always +cd - >/dev/null + +# Step 2: Assemble the ROM + +./scripts/assemble-rom.sh + +# eof diff --git a/targets/mips-ultra64-cpu.json b/targets/mips-ultra64-cpu.json new file mode 100644 index 0000000..0000fb5 --- /dev/null +++ b/targets/mips-ultra64-cpu.json @@ -0,0 +1,21 @@ +{ + "arch": "mips", + "cpu": "mips3", + "data-layout": "E-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-n32:64-S128", + "disable-redzone": true, + "env": "unknown", + "executables": true, + "features": "+mips3,+gp64", + "linker": "lld", + "linker-flavor": "ld.lld", + "linker-is-gnu": false, + "llvm-abiname": "n32", + "llvm-target": "mips-ultra64-cpu", + "os": "none", + "panic-strategy": "abort", + "relocation-model": "static", + "target-endian": "big", + "target-pointer-width": "32", + "vendor": "ultra64", + "max-atomic-width": 0 + } diff --git a/targets/mips-ultra64-rcp.json b/targets/mips-ultra64-rcp.json new file mode 100644 index 0000000..fd406af --- /dev/null +++ b/targets/mips-ultra64-rcp.json @@ -0,0 +1,22 @@ +{ + "arch": "mips", + "cpu": "mips3", + "data-layout": "E-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-n32:32-S128", + "disable-redzone": true, + "env": "unknown", + "executables": true, + "features": "+mips3,+soft-float", + "linker": "lld", + "linker-flavor": "ld.lld", + "linker-is-gnu": false, + "llvm-abiname": "n32", + "llvm-target": "mips-ultra64-rcp", + "os": "none", + "panic-strategy": "abort", + "relocation-model": "static", + "target-endian": "big", + "target-c-int-width": "32", + "target-pointer-width": "32", + "vendor": "ultra64", + "max-atomic-width": 0 + }