{"id":41827941,"url":"https://github.com/decompals/ido-matching-decomp","last_synced_at":"2026-01-25T08:17:12.586Z","repository":{"id":278452875,"uuid":"553150633","full_name":"decompals/ido-matching-decomp","owner":"decompals","description":"Matching decompilation of the Iris Development Option compiler","archived":false,"fork":false,"pushed_at":"2025-10-13T20:44:27.000Z","size":13963,"stargazers_count":3,"open_issues_count":0,"forks_count":3,"subscribers_count":4,"default_branch":"main","last_synced_at":"2025-10-28T00:45:07.089Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/decompals.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2022-10-17T19:50:54.000Z","updated_at":"2025-10-13T20:44:32.000Z","dependencies_parsed_at":"2025-03-10T16:34:56.631Z","dependency_job_id":"1cce8313-7180-437f-b5cf-c35501e7bcd6","html_url":"https://github.com/decompals/ido-matching-decomp","commit_stats":null,"previous_names":["decompals/ido-matching-decomp"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/decompals/ido-matching-decomp","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/decompals%2Fido-matching-decomp","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/decompals%2Fido-matching-decomp/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/decompals%2Fido-matching-decomp/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/decompals%2Fido-matching-decomp/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/decompals","download_url":"https://codeload.github.com/decompals/ido-matching-decomp/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/decompals%2Fido-matching-decomp/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28748801,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-25T07:58:02.558Z","status":"ssl_error","status_checked_at":"2026-01-25T07:57:57.153Z","response_time":113,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2026-01-25T08:17:11.274Z","updated_at":"2026-01-25T08:17:12.571Z","avatar_url":"https://github.com/decompals.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"# IDO matching decomp\n\nMatching decompilation of the IRIX Development Option compiler.\n\nThe intention is to eventually match all the programs required to build C files to an unlinked binary, namely\n\n- `cc` - compiler driver, runs everything else as appropriate\n- `cfe` - \"C frontend\", preprocessor and runs the optimisation and code generation steps\n- `uopt` - optimiser used by `-O2`\n- `ugen` - code generator used for lower optimisation\n- `as1` - assembler for compiler-generated assembly\n\nsince this process is the most useful for other decompilation projects.\n\nLower priority but also of interest:\n\n- `as0` - assembler for handwritten assembly\n- `ld` (linker) for outputting linked object files\n- `uld` (ucode linker) and `umerge` (procedure merger) for `-O3`\n- `upas` frontend for Pascal, possibly of interest since much of IDO is Pascal\n\nOf these,\n\n- `cc`, `cfe`, `as0` are written in C, `cfe` also contains Yacc components.\n- `uopt`, `ugen`, `as1`, `uld`, `umerge`, `upas`, are written in Pascal.\n- `ld` is unknown at present\n\n## State of the repository\n\nThe following table specify if each binary has been matched or not, and if it has their functions matching or the whole binary/elf.\n\n| Program   | 5.3 functions | 5.3 elf | 7.1 functions | 7.1 elf |\n| -         | -   | -   | -   | -   |\n| `cc`      | :x: | :x: | :heavy_check_mark: | :x: |\n| `cfe`     | :x: | :x: | :x: | :x: |\n| `uopt`    | :x: | :x: | :x: | :x: |\n| `ugen`    | :x: | :x: | :x: | :x: |\n| `as1`     | :x: | :x: | :x: | :x: |\n| `as0`     | :heavy_check_mark: | :x: | :x: | :x: |\n| `ld`      | :x: | :x: | :x: | :x: |\n| `uld`     | :x: | :x: | :x: | :x: |\n| `umerge`  | :x: | :x: | :x: | :x: |\n| `upas`    | :x: | :x: | :x: | :x: |\n| `ujoin`   | :x: | :x: | :x: | :x: |\n| `usplit`  | :x: | :x: | :x: | :x: |\n\n## Build dependencies\n\nTODO\n\n```bash\npython3 -m pip install -U -r requirements.txt\n```\n\n## Setup\n\n```bash\nmake setup\nmake disasm\nmake\n```\n\nDiff: `./diff.py -mwob --objfile build/src/7.1/cc/cc.o main`\n\n## Sources\n\n- `lib/indy/dev/usr/lib/crt{1,n}.o` are from `IRISDevelopmentOption7.1.1forIRIX6.4_02-97_812-0625-002.iso`\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdecompals%2Fido-matching-decomp","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdecompals%2Fido-matching-decomp","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdecompals%2Fido-matching-decomp/lists"}