[StoneDC]

What

Adds typed dynamic calls to div/ldiv/lldiv/imaxdiv through both the real unpatched libc PRX and its NID-patched output, checking quotient/remainder fields and caller guards. The standalone test target explicitly depends on the existing patched-libc output rule.

Implementation basis and limits: canonical APS5_VABI declarations and independent Python toward-zero quotient/remainder golden pairs (148 calls per module). No extra export declarations or guessed field offsets are introduced. Zero divisors and MIN/-1 overflow are excluded. NID lookup uses the project helper, so this does not independently certify that algorithm or PS5 caller ABI/layout; it verifies the built library/declaration boundary.

Integration review: the exact topic head was checked with the repository overlap tool against main 14b3441f3d543b0e3a60d5f0fcf51e49fa14b305. The tool reported shared CMake registration files in older PRs that already conflict with main: #5021, #7275, #8650, #9019, #9156, #9293, #9297, #9302, #9383, #9571. Their scoped file diffs were reviewed separately. 7 file comparisons could be projected onto the audit base and then combined with this topic without a new file conflict. 3 peer file changes already conflict with main and are not described as automatically mergeable; their registration changes were inspected directly. These peers do not provide this feature or test matrix. This uses a separate test/registration block and has no functional landing-order dependency. If a shared registration file changes before landing, this branch will need its affected merge and test checks refreshed. All 20 topic commits also merged independently into current validation main 4c7d275bef89d309313d16bc2bc05d37a1b50be2; their combined integration 2a0489dd307a9c98b9b353ea7282b65809db07dd was built and tested. Depends on: none; no other candidate branch is required to build or exercise this change.

Tested

guest_division_prx_abi passed with actual dynamic loading and NID-patched libc on Linux and Windows, no skips. Windows standalone-target validation exposed and resolved the need to generate patched libc explicitly; success was rechecked through real function results rather than symbol presence alone.

Topic head: 4022b2f1cda81b3a3b77cb1dfdb452e297d2f4dd, based on f88c86bf6cdd2c74bcdb31e45ba877d4993e62e5. Local platforms: Ubuntu/WSL GCC 15.2, CMake 4.2.3, Python 3.14.4; Windows MinGW GCC 15.2, CMake 4.3.1, Python 3.14.3. Applicable conventions, whitespace, script registration and current-main three-way merge checks passed. Linux full-product builds and subsequent focused library rebuilds were performed; Windows used the full configuration and the affected library/test targets. The combined 11 system-library CTests passed on both platforms. No game or PS5 measurement is claimed; macOS and hosted full-build CI are not reported as passed.

Checklist

• Based on current main; no other open PR implements the same functions
• One topic per PR; follow-ups go in a new PR
• No comments in code except technical debt
• Unimplemented paths throw (NotImplemented_nid_no_patch); silent stubs are listed under Silent stubs in their library's technical debt file
• No notes, investigation .md files or images added to the repository (attach them to this PR)
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none
• Fixes: none
• Unblocks: none
• GPUs tested: n/a
• AI-assisted: yes

[github-actions]

Some comparisons could not be completed because a pull request conflicts with the base branch. Review these shared files manually before concluding that there is no overlap.

Pull request	Shared files not compared
PR 5021	core/libs/CMakeLists.txt
PR 7275	core/libs/CMakeLists.txt
PR 8650	core/libs/CMakeLists.txt
PR 9019	core/libs/CMakeLists.txt
PR 9156	core/libs/CMakeLists.txt
PR 9162	core/libs/CMakeLists.txt
PR 9293	core/libs/CMakeLists.txt
PR 9297	core/libs/CMakeLists.txt
PR 9302	core/libs/CMakeLists.txt
PR 9383	core/libs/CMakeLists.txt
PR 9571	core/libs/CMakeLists.txt
PR 12130	core/libs/CMakeLists.txt
PR 12642	core/libs/CMakeLists.txt
PR 13206	core/libs/CMakeLists.txt
PR 13253	core/libs/CMakeLists.txt
PR 13255	core/libs/CMakeLists.txt
PR 13256	core/libs/CMakeLists.txt
PR 14213	core/libs/CMakeLists.txt
PR 14264	core/libs/CMakeLists.txt
PR 14299	core/libs/CMakeLists.txt

[babyhuey]

Windows run of this head 4022b2f1cda8, merged onto main ba5b5330b37 (clean merge, local only), with the selection CI's skipped Windows product job uses: Windows 11, Ryzen 7 5800X, RTX 3080, WinLibs GCC 15.2, Release, BUILD_TESTING=ON. The tree was configured fresh after the merge, then select_tests.py select / ninja -f select.ninja selected / --target libs / select_tests.py ctest --parallel 4 --timeout 120.

• Selected 3001 tests: 2251 pass, 4 fail, 746 skip. No failures from this PR. guest_freebsd_clocks and guest_raise_exception also fail on main on this machine (the first expects the host time zone to be UTC, fixed by fix(tests): drop the guest_freebsd_clocks check that the host zone is UTC #12660; the second libkernel (Windows): guest_raise_exception slowed about 3x and sometimes aborts at "address waking" since 540364a24 (#10666) #11813). select_tests_SelectArgumentTests and performance_compare timed out under --parallel 4; alone on the same merged tree, rebuilt, both passed 3 of 3 (18-23 s and 7.4-7.5 s).

AI-assisted: yes (Claude Code)