Between Gamestate quit sound, get stack pointer

00040974: 27bdffe8 addiu r29,r29,0xffe8
00040978: afbf0010 sw r31,0x0010(r29)
0004097c: 0c01024d jal 0x00040934                  Between Gamestates: turn off sound, quit SPU
00040980: 00000000 nop
00040984: 3c048004 lui r4,0x8004
00040988: 24847608 addiu r4,r4,0x7608
0004098c: 0c0046f0 jal 0x00011bc0                  Get Stack pointer
00040990: 00000000 nop
00040994: 8fbf0010 lw r31,0x0010(r29)
00040998: 27bd0018 addiu r29,r29,0x0018
0004099c: 03e00008 jr r31
000409a0: 00000000 nop