SMS-GCI-Loader/gecko/code/gecko-return.s

## restore r15 (pointer to current gecko instruction)
  lis r3, GCTDST+4@ha
  lwz r15, GCTDST+4@l(r3)
## update r15 = restored r15 - r4(this C0 code size)
  sub r15, r15, r4
  blr
Add script to build gecko code of GCI Loader - GCI Loader: gecko-gosub + 06 bin + 04 bl to onReadOptionBlock - place GCI Loader code at 817FE800 since [817FEEA0, 81800000) is used by system - place buffer at 817F1800 (instead of 817F1000+4) since there seems to be some alignment issue - Assume file size == 0x2000*6 since fileInfo->length seems to be 0 2023-02-10 23:20:40 +09:00			`## restore r15 (pointer to current gecko instruction)`
			`lis r3, GCTDST+4@ha`
			`lwz r15, GCTDST+4@l(r3)`
			`## update r15 = restored r15 - r4(this C0 code size)`
			`sub r15, r15, r4`
			`blr`