Decompile func_800486F4 (marina)

[DodongoRex]

Decompiles func_800486F4 in src/marina.c.

• Function matches (checksum OK, first_diff.py: No differences)
• Marina segment already compiling as C on cleanup2024
• Adds required symbol declarations and address-only linker symbols

[DodongoRex]

Confirmed matching on US1.
Built with NON_MATCHING=1 (checksum OK) and ran first_diff.py — no differences.
Adds the required symbol plumbing now that marina is C (including D_801373F0 / D_801373F1 and related address-only symbols).

[DodongoRex]

Rebased onto reserve-src-49200. Updated C to reproduce the ROM’s sign-extension behavior exactly.
Checksum OK
first_diff.py: No differences
marina.c emits .text only (no .data, .rodata, or .bss)
Ready to merge