ppkantorski/nx-ovlloader v1.1.1

nx-ovlloader+ v1.1.1

on GitHub

List of changes:

1. Threading safety improvements.
   • Added loading flag (g_loading) to prevent concurrent loadNro() calls.
   • Added proper cleanup in __wrap_exit() for cached filesystem handle.
2. Memory mapping optimizations.
   • Added cached address allocation system starting at 0x8000000000ull.
   • Implemented virtual address space management with 64GB reset threshold (0x8010000000ull).
   • Added 64MB spacing (0x4000000) between allocations to reduce mapping conflicts.
   • Fallback to random mapping only when cached allocation fails (improves overlay cycling performance).
3. File I/O optimizations.
   • Replaced multi-part file reading (separate NroStart, NroHeader, rest reads) with single bulk file operation.
   • Added filesystem handle caching (g_sdmc) to avoid repeated open/close operations.
   • Eliminated manual offset management and size calculations during file reading.
4. g_argv, g_nextArgv, g_nextNroPath buffer size reduction. (was a bit too generous)
   • g_argv and g_nextArgv reduced from 2048 to 512 bytes.
   • g_nextNroPath reduced from 512 to 256 bytes.
5. Removal of HOS 9.0.0 checks (occur every single overlay launch).
   • WARNING: Does not work on HOS below 9.0.0 so do not try.
6. Replacement of memcpy/memset with __builtin_memcpy/__builtin_memset.
7. Code cleanup and comment removal.
   • Removed various inline comments for cleaner code.
   • Removed unnecessary variable initialization (s32 idx).

Full Changelog: v1.1.0...587395c

Update:

• Restoration of HOS 9.0.0 or lower checks. ~ 08/03/2025 3:23 AM PST
  • They appear to actually only occur once, so there's no reason to remove the check.
• Slight cleanup to variable initializations. ~ 08/03/2025 4:50 PM PST

Full Changelog: 587395c...2f60d5f