├── .cargo └── config ├── .gitignore ├── Cargo.lock ├── Cargo.toml ├── LICENSE-APACHE ├── LICENSE-MIT ├── README.md ├── link.ld ├── powerpc-gaymcube-none.json ├── rust-toolchain └── src ├── main.rs └── rt.rs /.cargo/config: -------------------------------------------------------------------------------- 1 | [build] 2 | target = "powerpc-gaymcube-none.json" 3 | 4 | [unstable] 5 | build-std = ["core", "compiler_builtins"] -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | -------------------------------------------------------------------------------- /Cargo.lock: -------------------------------------------------------------------------------- 1 | # This file is automatically @generated by Cargo. 2 | # It is not intended for manual editing. 3 | [[package]] 4 | name = "gaycko" 5 | version = "0.1.0" 6 | -------------------------------------------------------------------------------- /Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "gaycko" 3 | version = "0.1.0" 4 | authors = ["Mary "] 5 | edition = "2018" 6 | 7 | [dependencies] 8 | -------------------------------------------------------------------------------- /LICENSE-APACHE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. Definitions. 9 | 10 | "License" shall mean the terms and conditions for use, reproduction, 11 | and distribution as defined by Sections 1 through 9 of this document. 12 | 13 | "Licensor" shall mean the copyright owner or entity authorized by 14 | the copyright owner that is granting the License. 15 | 16 | "Legal Entity" shall mean the union of the acting entity and all 17 | other entities that control, are controlled by, or are under common 18 | control with that entity. For the purposes of this definition, 19 | "control" means (i) the power, direct or indirect, to cause the 20 | direction or management of such entity, whether by contract or 21 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 22 | outstanding shares, or (iii) beneficial ownership of such entity. 23 | 24 | "You" (or "Your") shall mean an individual or Legal Entity 25 | exercising permissions granted by this License. 26 | 27 | "Source" form shall mean the preferred form for making modifications, 28 | including but not limited to software source code, documentation 29 | source, and configuration files. 30 | 31 | "Object" form shall mean any form resulting from mechanical 32 | transformation or translation of a Source form, including but 33 | not limited to compiled object code, generated documentation, 34 | and conversions to other media types. 35 | 36 | "Work" shall mean the work of authorship, whether in Source or 37 | Object form, made available under the License, as indicated by a 38 | copyright notice that is included in or attached to the work 39 | (an example is provided in the Appendix below). 40 | 41 | "Derivative Works" shall mean any work, whether in Source or Object 42 | form, that is based on (or derived from) the Work and for which the 43 | editorial revisions, annotations, elaborations, or other modifications 44 | represent, as a whole, an original work of authorship. For the purposes 45 | of this License, Derivative Works shall not include works that remain 46 | separable from, or merely link (or bind by name) to the interfaces of, 47 | the Work and Derivative Works thereof. 48 | 49 | "Contribution" shall mean any work of authorship, including 50 | the original version of the Work and any modifications or additions 51 | to that Work or Derivative Works thereof, that is intentionally 52 | submitted to Licensor for inclusion in the Work by the copyright owner 53 | or by an individual or Legal Entity authorized to submit on behalf of 54 | the copyright owner. For the purposes of this definition, "submitted" 55 | means any form of electronic, verbal, or written communication sent 56 | to the Licensor or its representatives, including but not limited to 57 | communication on electronic mailing lists, source code control systems, 58 | and issue tracking systems that are managed by, or on behalf of, the 59 | Licensor for the purpose of discussing and improving the Work, but 60 | excluding communication that is conspicuously marked or otherwise 61 | designated in writing by the copyright owner as "Not a Contribution." 62 | 63 | "Contributor" shall mean Licensor and any individual or Legal Entity 64 | on behalf of whom a Contribution has been received by Licensor and 65 | subsequently incorporated within the Work. 66 | 67 | 2. Grant of Copyright License. Subject to the terms and conditions of 68 | this License, each Contributor hereby grants to You a perpetual, 69 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 70 | copyright license to reproduce, prepare Derivative Works of, 71 | publicly display, publicly perform, sublicense, and distribute the 72 | Work and such Derivative Works in Source or Object form. 73 | 74 | 3. Grant of Patent License. Subject to the terms and conditions of 75 | this License, each Contributor hereby grants to You a perpetual, 76 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 77 | (except as stated in this section) patent license to make, have made, 78 | use, offer to sell, sell, import, and otherwise transfer the Work, 79 | where such license applies only to those patent claims licensable 80 | by such Contributor that are necessarily infringed by their 81 | Contribution(s) alone or by combination of their Contribution(s) 82 | with the Work to which such Contribution(s) was submitted. If You 83 | institute patent litigation against any entity (including a 84 | cross-claim or counterclaim in a lawsuit) alleging that the Work 85 | or a Contribution incorporated within the Work constitutes direct 86 | or contributory patent infringement, then any patent licenses 87 | granted to You under this License for that Work shall terminate 88 | as of the date such litigation is filed. 89 | 90 | 4. Redistribution. You may reproduce and distribute copies of the 91 | Work or Derivative Works thereof in any medium, with or without 92 | modifications, and in Source or Object form, provided that You 93 | meet the following conditions: 94 | 95 | (a) You must give any other recipients of the Work or 96 | Derivative Works a copy of this License; and 97 | 98 | (b) You must cause any modified files to carry prominent notices 99 | stating that You changed the files; and 100 | 101 | (c) You must retain, in the Source form of any Derivative Works 102 | that You distribute, all copyright, patent, trademark, and 103 | attribution notices from the Source form of the Work, 104 | excluding those notices that do not pertain to any part of 105 | the Derivative Works; and 106 | 107 | (d) If the Work includes a "NOTICE" text file as part of its 108 | distribution, then any Derivative Works that You distribute must 109 | include a readable copy of the attribution notices contained 110 | within such NOTICE file, excluding those notices that do not 111 | pertain to any part of the Derivative Works, in at least one 112 | of the following places: within a NOTICE text file distributed 113 | as part of the Derivative Works; within the Source form or 114 | documentation, if provided along with the Derivative Works; or, 115 | within a display generated by the Derivative Works, if and 116 | wherever such third-party notices normally appear. The contents 117 | of the NOTICE file are for informational purposes only and 118 | do not modify the License. You may add Your own attribution 119 | notices within Derivative Works that You distribute, alongside 120 | or as an addendum to the NOTICE text from the Work, provided 121 | that such additional attribution notices cannot be construed 122 | as modifying the License. 123 | 124 | You may add Your own copyright statement to Your modifications and 125 | may provide additional or different license terms and conditions 126 | for use, reproduction, or distribution of Your modifications, or 127 | for any such Derivative Works as a whole, provided Your use, 128 | reproduction, and distribution of the Work otherwise complies with 129 | the conditions stated in this License. 130 | 131 | 5. Submission of Contributions. Unless You explicitly state otherwise, 132 | any Contribution intentionally submitted for inclusion in the Work 133 | by You to the Licensor shall be under the terms and conditions of 134 | this License, without any additional terms or conditions. 135 | Notwithstanding the above, nothing herein shall supersede or modify 136 | the terms of any separate license agreement you may have executed 137 | with Licensor regarding such Contributions. 138 | 139 | 6. Trademarks. This License does not grant permission to use the trade 140 | names, trademarks, service marks, or product names of the Licensor, 141 | except as required for reasonable and customary use in describing the 142 | origin of the Work and reproducing the content of the NOTICE file. 143 | 144 | 7. Disclaimer of Warranty. Unless required by applicable law or 145 | agreed to in writing, Licensor provides the Work (and each 146 | Contributor provides its Contributions) on an "AS IS" BASIS, 147 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 148 | implied, including, without limitation, any warranties or conditions 149 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 150 | PARTICULAR PURPOSE. You are solely responsible for determining the 151 | appropriateness of using or redistributing the Work and assume any 152 | risks associated with Your exercise of permissions under this License. 153 | 154 | 8. Limitation of Liability. In no event and under no legal theory, 155 | whether in tort (including negligence), contract, or otherwise, 156 | unless required by applicable law (such as deliberate and grossly 157 | negligent acts) or agreed to in writing, shall any Contributor be 158 | liable to You for damages, including any direct, indirect, special, 159 | incidental, or consequential damages of any character arising as a 160 | result of this License or out of the use or inability to use the 161 | Work (including but not limited to damages for loss of goodwill, 162 | work stoppage, computer failure or malfunction, or any and all 163 | other commercial damages or losses), even if such Contributor 164 | has been advised of the possibility of such damages. 165 | 166 | 9. Accepting Warranty or Additional Liability. While redistributing 167 | the Work or Derivative Works thereof, You may choose to offer, 168 | and charge a fee for, acceptance of support, warranty, indemnity, 169 | or other liability obligations and/or rights consistent with this 170 | License. However, in accepting such obligations, You may act only 171 | on Your own behalf and on Your sole responsibility, not on behalf 172 | of any other Contributor, and only if You agree to indemnify, 173 | defend, and hold each Contributor harmless for any liability 174 | incurred by, or claims asserted against, such Contributor by reason 175 | of your accepting any such warranty or additional liability. 176 | 177 | END OF TERMS AND CONDITIONS 178 | 179 | APPENDIX: How to apply the Apache License to your work. 180 | 181 | To apply the Apache License to your work, attach the following 182 | boilerplate notice, with the fields enclosed by brackets "[]" 183 | replaced with your own identifying information. (Don't include 184 | the brackets!) The text should be enclosed in the appropriate 185 | comment syntax for the file format. We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. -------------------------------------------------------------------------------- /LICENSE-MIT: -------------------------------------------------------------------------------- 1 | Permission is hereby granted, free of charge, to any 2 | person obtaining a copy of this software and associated 3 | documentation files (the "Software"), to deal in the 4 | Software without restriction, including without 5 | limitation the rights to use, copy, modify, merge, 6 | publish, distribute, sublicense, and/or sell copies of 7 | the Software, and to permit persons to whom the Software 8 | is furnished to do so, subject to the following 9 | conditions: 10 | 11 | The above copyright notice and this permission notice 12 | shall be included in all copies or substantial portions 13 | of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF 16 | ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 17 | TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 18 | PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT 19 | SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 20 | CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR 22 | IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 | DEALINGS IN THE SOFTWARE. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # gaycko 2 | 3 | Some WIP GameCube toolchain in Rust. 4 | 5 | ## License 6 | 7 | gaycko is distributed under the terms of either the MIT license or the Apache 8 | License (Version 2.0), at the user's choice. 9 | 10 | See [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT). 11 | -------------------------------------------------------------------------------- /link.ld: -------------------------------------------------------------------------------- 1 | ENTRY(bootstrap_start) 2 | OUTPUT_FORMAT(elf32-powerpc) 3 | 4 | PHDRS 5 | { 6 | text PT_LOAD FLAGS(5); 7 | rodata PT_LOAD FLAGS(4); 8 | data PT_LOAD FLAGS(6); 9 | bss PT_LOAD FLAGS(6); 10 | } 11 | 12 | SECTIONS { 13 | . = 0x80003100; 14 | 15 | .text ALIGN(0x10) : { 16 | KEEP (*(.text.crt0)) 17 | *(.text .text.*) 18 | } :text 19 | 20 | .data ALIGN(0x10) : { 21 | *(.data .data.*) 22 | } : data 23 | 24 | .rodata ALIGN(0x10) : { 25 | *(.rodata .rodata.*) 26 | } : data 27 | 28 | .got ALIGN(0x10) : { 29 | *(.got) 30 | } : data 31 | 32 | .data.rel.ro ALIGN(0x10) : { 33 | *(.data.rel.ro.local.*) *(data.rel.ro .data.rel.ro.*) 34 | } : data 35 | 36 | .bss ALIGN(0x10) : { 37 | _bss_bottom = .; 38 | *(.bss .bss.*) 39 | *(COMMON) 40 | _bss_top = .; 41 | 42 | . = ALIGN(16); 43 | PROVIDE(_stack_bottom = .); 44 | . = . + 0x10000; /* 64kB of stack memory */ 45 | . = ALIGN(16); 46 | PROVIDE(_stack_top = .); 47 | } :bss 48 | 49 | /DISCARD/ : { 50 | *(.comment*) 51 | *(.eh_frame*) 52 | *(.gcc_except_table*) 53 | *(.note*) 54 | *(.rel.eh_frame*) 55 | } 56 | } -------------------------------------------------------------------------------- /powerpc-gaymcube-none.json: -------------------------------------------------------------------------------- 1 | { 2 | "arch": "powerpc", 3 | "cpu": "750", 4 | "data-layout": "E-m:e-p:32:32-i64:64-n32", 5 | "dynamic-linking": false, 6 | "env": "", 7 | "executables": true, 8 | "has-elf-tls": false, 9 | "has-rpath": true, 10 | "is-builtin": true, 11 | "linker": "rust-lld", 12 | "linker-flavor": "ld.lld", 13 | "linker-is-gnu": true, 14 | "llvm-target": "powerpc-unknown-eabi", 15 | "max-atomic-width": 32, 16 | "os": "none", 17 | "panic-strategy": "abort", 18 | "position-independent-executables": false, 19 | "pre-link-args": { 20 | "ld.lld": [ 21 | "--build-id=sha1", 22 | "-Tlink.ld" 23 | ] 24 | }, 25 | "relro-level": "off", 26 | "target-endian": "big", 27 | "target-family": [ 28 | "unix" 29 | ], 30 | "target-mcount": "_mcount", 31 | "target-pointer-width": "32", 32 | "vendor": "mary" 33 | } 34 | -------------------------------------------------------------------------------- /rust-toolchain: -------------------------------------------------------------------------------- 1 | nightly -------------------------------------------------------------------------------- /src/main.rs: -------------------------------------------------------------------------------- 1 | #![no_std] 2 | #![no_main] 3 | #![feature(asm, global_asm, naked_functions, alloc_error_handler)] 4 | #![allow(dead_code)] 5 | 6 | use crate::rt::UART; 7 | use core::fmt::Write; 8 | 9 | mod rt; 10 | 11 | entry!(main); 12 | 13 | fn main() { 14 | writeln!(&mut UART, "HELLO WORLD\n\0").ok(); 15 | } 16 | -------------------------------------------------------------------------------- /src/rt.rs: -------------------------------------------------------------------------------- 1 | #![allow(clippy::empty_loop)] 2 | 3 | use core::fmt::Write; 4 | use core::panic::PanicInfo; 5 | use core::ptr; 6 | 7 | #[macro_export] 8 | macro_rules! entry { 9 | ($path:path) => { 10 | #[export_name = "main"] 11 | pub unsafe fn __main() -> () { 12 | // type check the given path 13 | let f: fn() -> () = $path; 14 | 15 | f() 16 | } 17 | }; 18 | } 19 | 20 | #[panic_handler] 21 | fn panic(panic_info: &PanicInfo<'_>) -> ! { 22 | writeln!(&mut UART, "PANIC: {}\r", panic_info).ok(); 23 | 24 | loop {} 25 | } 26 | 27 | extern "C" { 28 | static _stack_bottom: u8; 29 | static _stack_top: u8; 30 | static mut _bss_bottom: u8; 31 | static mut _bss_top: u8; 32 | } 33 | 34 | #[link_section = ".text.crt0"] 35 | #[naked] 36 | #[no_mangle] 37 | pub unsafe extern "C" fn _start() -> ! { 38 | asm!( 39 | " 40 | b startup 41 | .long 0xDEADBEEF 42 | ", 43 | options(noreturn), 44 | ) 45 | } 46 | 47 | #[naked] 48 | #[no_mangle] 49 | pub unsafe extern "C" fn startup() -> ! { 50 | asm!( 51 | " 52 | // First clear all general purpose registers 53 | li 0, 0 54 | li 1, 0 55 | li 2, 0 56 | li 3, 0 57 | li 4, 0 58 | li 5, 0 59 | li 6, 0 60 | li 7, 0 61 | li 8, 0 62 | li 9, 0 63 | li 10, 0 64 | li 11, 0 65 | li 12, 0 66 | li 13, 0 67 | li 14, 0 68 | li 15, 0 69 | li 16, 0 70 | li 16, 0 71 | li 17, 0 72 | li 18, 0 73 | li 19, 0 74 | li 20, 0 75 | li 21, 0 76 | li 22, 0 77 | li 23, 0 78 | li 24, 0 79 | li 25, 0 80 | li 26, 0 81 | li 27, 0 82 | li 28, 0 83 | li 29, 0 84 | li 30, 0 85 | li 31, 0 86 | 87 | // TODO: Ensure the MMU lookup tables are cleared to avoid any weird behaviours on hw. 88 | 89 | // Setup a custom stack just in case (Rust can get very hungry of it sometime so we don't trust the initial stack given) 90 | lis 1, _stack_top@h 91 | ori 1, 1, _stack_top@l 92 | b _start_with_stack 93 | ", 94 | options(noreturn), 95 | ) 96 | } 97 | 98 | #[no_mangle] 99 | unsafe extern "C" fn clean_bss(start_bss: *mut u8, end_bss: *mut u8) { 100 | ptr::write_bytes( 101 | start_bss, 102 | 0, 103 | end_bss as *const _ as usize - start_bss as *const _ as usize, 104 | ); 105 | } 106 | 107 | pub struct UART; 108 | 109 | impl Write for UART { 110 | fn write_str(&mut self, s: &str) -> Result<(), core::fmt::Error> { 111 | unsafe { 112 | puts(s.as_bytes().as_ptr()); 113 | } 114 | Ok(()) 115 | } 116 | } 117 | 118 | // NOTE: This function is hooked by emulator to print logs of homebrews and commercial games. 119 | // BODY: We abuse this fact to have early debugging logs without any framebuffers. 120 | #[no_mangle] 121 | #[inline(never)] 122 | pub unsafe extern "C" fn puts(msg: *const u8) -> i32 { 123 | 0 124 | } 125 | 126 | #[no_mangle] 127 | pub unsafe extern "C" fn _start_with_stack() -> ! { 128 | // Init stuffs here 129 | clean_bss(&mut _bss_bottom, &mut _bss_top); 130 | 131 | // Call user entry point 132 | extern "Rust" { 133 | fn main() -> (); 134 | } 135 | 136 | main(); 137 | 138 | loop {} 139 | } 140 | --------------------------------------------------------------------------------