implement version-specific patches; clean up menu abstraction

2023-05-26 09:55:12 -07:00
parent 03c26b587a
commit dbd6c59a0b
25 changed files with 548 additions and 394 deletions
@@ -0,0 +1,30 @@
+# This function returns the game version, with values more specific than can be
+# detected by the sub_version field in various login commands.
+
+# The returned value has the format 03GGRRVV, where:
+#   G = game (Ox4F (O) = Episodes 1&2, 0x53 (S) = Episode 3)
+#   R = region (0x45 (E), 0x4A (J), 0x50 (P))
+#   V = minor version (0 = 1.00, 1 = 1.01, 2 = 1.02, etc.)
+
+newserv_index_E3:
+
+entry_ptr:
+reloc0:
+  .offsetof start
+
+start:
+  lis    r3, 0x8000
+  lwz    r4, [r3]
+  lbz    r5, [r3 + 7]
+  li     r3, -1
+
+  rlwinm r0, r4, 16, 16, 31
+  cmplwi r0, 0x4750
+  bnelr
+
+  lis    r3, 0x3300
+  rlwimi r3, r4, 8, 8, 23
+  rlwimi r3, r5, 0, 24, 31
+  ori    r3, r3, 0x0030
+
+  blr