mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-19 09:49:21 +01:00
509 lines
11 KiB
ArmAsm
509 lines
11 KiB
ArmAsm
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# (c) Nuke www.usbgecko.com. Licensed under GPL V2
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.text
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#include "ppc.h"
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.globl patchhook # r3 address
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patchhook:
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mtctr r4
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lis r6, 0x4E80
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ori r6, r6, 0x0020 # blr
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findblr:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writebranch
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addi r3, r3, 4 # next word
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bdnz findblr # loop length
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b exit # stop unhooked game hanging
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writebranch:
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lis r4, 0x8000 # 800018A0 hook location (source)
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ori r4, r4, 0x18A8
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subf r4, r3, r4 # subtract r3 from r4 and place in r4
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lis r5, 0x3FF
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ori r5, r5, 0xFFFF # 0x3FFFFFF
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and r4, r4, r5
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lis r5, 0x4800 # 0x48000000
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or r4, r4, r5
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exit:
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blr # return
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.globl patchhook2 # r3 address
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patchhook2:
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mtctr r4
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lis r6, 0x4E80
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ori r6, r6, 0x0020 # blr
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findblr2:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writebranch2
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addi r3, r3, 4 # next word
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bdnz findblr2 # loop length
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b exit2 # stop unhooked game hanging
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writebranch2:
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lis r4, 0x8000 # 81700000 our temp patcher
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ori r4, r4, 0x18a8
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subf r4, r3, r4 # subtract r3 from r4 and place in r4
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lis r5, 0x3FF
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ori r5, r5, 0xFFFF # 0x3FFFFFF
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and r4, r4, r5
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lis r5, 0x4800 # 0x48000000
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or r4, r4, r5
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exit2:
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blr # return
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.globl patchhook3 # r3 address
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patchhook3:
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mtctr r4
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lis r6, 0x4BFF
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ori r6, r6, 0xE955 # blr
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findbne:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writebl
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addi r3, r3, 4 # next word
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bdnz findbne # loop length
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b exit3 # stop unhooked game hanging
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writebl:
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lis r4, 0x4BFF # 81700000 our temp patcher
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ori r4, r4, 0xEA91
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exit3:
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blr # return
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.globl patchhook4 # r3 address
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patchhook4:
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mtctr r4
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lis r6, 0x4082
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ori r6, r6, 0x001C # blr
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findregion:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writebr
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addi r3, r3, 4 # next word
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bdnz findregion # loop length
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b exit4 # stop unhooked game hanging
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writebr:
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lis r4, 0x4800
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ori r4, r4, 0x001C
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exit4:
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blr # return
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.globl multidolpatchone # r3 address
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multidolpatchone:
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mtctr r4
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lis r6, 0x3800
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ori r6, r6, 0x0001 # (li r0,1)
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findmulti:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writemulti
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subi r3, r3, 4 # go back
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bdnz findmulti # loop length
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b exit5 # stop unhooked game hanging
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writemulti:
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lis r4, 0x8170 # 81700000
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ori r4, r4, 0x0020
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subf r18, r3, r4 # subf r18,(source),(dest)
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lis r6, 0x4800
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ori r6,r6,1
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rlwimi r6,r18,0,6,29
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stw r6,0(r3)
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stw r6,0(r19)
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stw r3,4(r19)
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dcbf r0, r3
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sync
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icbi r0, r3
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isync
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exit5:
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blr # return
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.globl multidolpatchtwo # r3 address
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multidolpatchtwo:
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mtctr r4
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lis r6, 0x3F60
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ori r6, r6, 0x8000 # (lis r27,-32768)
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findmulti2:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writemulti2
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addi r3, r3, 4 # go forward
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bdnz findmulti2 # loop length
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b exit6 # stop unhooked game hanging
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writemulti2:
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lis r4, 0x8170 # 81700020
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ori r4, r4, 0x0000
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subf r18, r3, r4 # subf r18,(source),(dest)
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lis r6, 0x4800
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ori r6,r6,1
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rlwimi r6,r18,0,6,29
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stw r6,0(r3)
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stw r6,0(r19)
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stw r3,4(r19)
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dcbf r0, r3
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sync
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icbi r0, r3
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isync
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exit6:
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blr # return
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.globl langvipatch # r3 address, r4 len, r5 lang byte
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langvipatch:
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mtctr r4
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lis r6, 0x8861
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ori r6, r6, 0x0008 # lbz r3, 8(sp)
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findlang:
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lwz r7, 0(r3)
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cmpw r6, r7
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beq patchlang
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addi r3, r3, 4 # next word
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bdnz findlang # loop length
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b exitlang # stop unhooked game hanging
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patchlang:
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lis r4, 0x3860 # 0x38600001 li %r3, 1 # eng
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add r4, r4, r5
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gofinal:
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitlang:
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blr # return
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.globl vipatch # r3 address
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vipatch:
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mtctr r4
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lis r6, 0x5400
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ori r6, r6, 0xFFFE
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findvi:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq patchvi
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addi r3, r3, 4 # next word
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bdnz findvi # loop length
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b exitvi # stop unhooked game hanging
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patchvi:
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lis r4, 0x8000
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ori r4, r4, 0x0003
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lbz r5, 0(r4)
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cmpwi r5, 0x45 # USA
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beq patchusa
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cmpwi r5, 0x4A
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beq patchjap2 # JAP
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b exitvi
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patchjap2:
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lis r4, 0x3800
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ori r4, r4, 0x0001
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b gofinal2
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patchusa:
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lis r4, 0x3800
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ori r4, r4, 0x0000
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gofinal2:
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitvi:
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blr # return
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.globl regionfreejap # r3 address
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regionfreejap:
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mtctr r4
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lis r6, 0x2C1B
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ori r6, r6, 0x0000 # blr
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findjap:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writenop
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addi r3, r3, 4 # next word
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bdnz findjap # loop length
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b exitjap # stop unhooked game hanging
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writenop:
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addi r3, r3, 4 # next word
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lis r4, 0x6000 # nop
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitjap:
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blr # return
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.globl regionfreeusa # r3 address
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regionfreeusa:
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mtctr r4
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lis r6, 0x281B
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ori r6, r6, 0x0001 # blr
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findusa:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writenop1
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addi r3, r3, 4 # next word
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bdnz findusa # loop length
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b exitusa # stop unhooked game hanging
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writenop1:
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addi r3, r3, 4 # next word
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lis r4, 0x6000 # nop
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitusa:
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blr # return
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.globl regionfreepal # r3 address
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regionfreepal:
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mtctr r4
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lis r6, 0x281B
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ori r6, r6, 0x0002 # blr
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findpal:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writenop2
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addi r3, r3, 4 # next word
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bdnz findpal # loop length
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b exitpal # stop unhooked game hanging
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writenop2:
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addi r3, r3, 4 # next word
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lis r4, 0x6000 # nop
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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lis r6, 0x4082
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ori r6, r6, 0x001C # bne loc_81377A2C
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findextra: #this is just the bne to b patch
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writeb
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addi r3, r3, 4 # next word
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bdnz findextra # loop length
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b exitpal # stop unhooked game hanging
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writeb:
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addi r3, r3, 4 # next word
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lis r4, 0x4800
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ori r4, r4, 0x001c # b loc_81377A2C
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitpal:
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blr # return
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.globl removehealthcheck # r3 address
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removehealthcheck:
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mtctr r4
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lis r6, 0x4182
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ori r6, r6, 0x004C # blr
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findhe:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writebhe
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addi r3, r3, 4 # next word
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bdnz findhe # loop length
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b exithe # stop unhooked game hanging
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writebhe:
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lis r4, 0x6000
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exithe:
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blr # return
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.globl patchupdatecheck # r3 address
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patchupdatecheck:
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mtctr r4
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lis r6, 0x4082
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ori r6, r6, 0x0020 # blr
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finduc:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writenopuc
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addi r3, r3, 4 # next word
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bdnz finduc # loop length
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b exituc # stop unhooked game hanging
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writenopuc:
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lis r4, 0x6000
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exituc:
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blr # return
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.globl copyflagcheck1 # r3 address
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copyflagcheck1:
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mtctr r4
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lis r6, 0x5400
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ori r6, r6, 0x07FF
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findncf1:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writencf1
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subi r3, r3, 4 # next word
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bdnz findncf1 # loop length
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b exitncf1 # stop unhooked game hanging
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writencf1:
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lis r4, 0x7C00
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitncf1:
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blr # return
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.globl copyflagcheck2 # r3 address
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copyflagcheck2:
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mtctr r4
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lis r6, 0x5400
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ori r6, r6, 0x07FF
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findncf2:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writencf2
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subi r3, r3, 4 # next word
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bdnz findncf2 # loop length
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b exitncf2 # stop unhooked game hanging
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writencf2:
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lis r4, 0x7C00
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ori r4, r4, 0x0000
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitncf2:
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blr # return
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.globl copyflagcheck3 # r3 address
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copyflagcheck3:
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findncf3:
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addi r3, r3, 20 # go back one dword (4 bytes)
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lwz r5, 0(r3)
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writencf3:
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lis r4, 0x3860
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ori r4, r4, 0x0001 # li r3,1
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitncf3:
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blr # return
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.globl copyflagcheck4 # r3 address
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copyflagcheck4:
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mtctr r4
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lis r6, 0x3BE0
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ori r6, r6, 0x0001 # li r31,1
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findncf4:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writencf4
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addi r3, r3, 4 # next word
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bdnz findncf4 # loop length
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b exitncf4 # stop unhooked game hanging
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writencf4:
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lis r4, 0x3BE0
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ori r4, r4, 0x0000 # change this to 3BE00000 (li r31,0)
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitncf4:
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blr # return
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.globl copyflagcheck5 # r3 address
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copyflagcheck5:
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mtctr r4
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lis r6, 0x4182
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ori r6, r6, 0x0024 # beq loc_8134AA60
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findncf5:
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lwz r5, 0(r3)
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cmpw r6, r5
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beq writencf5
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addi r3, r3, 4 # next word
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bdnz findncf5 # loop length
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b exitncf5 # stop unhooked game hanging
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writencf5:
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#addi r3, r3, 8 # skip 2
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lis r4, 0x801D
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ori r4, r4, 0x0024 # change to 801D0024 (lwz r0,36(r29))
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stw r4, 0(r3)
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dcbf r0, r3
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icbi r0, r3
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addi r3, r3, 4 # next word
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lis r4, 0x5400
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ori r4, r4, 0x003C # change to 5400003C (rlwinm r0,r0,0,0,30)
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stw r4, 0(r3)
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dcbf r0, r3
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icbi r0, r3
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addi r3, r3, 4 # next word
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lis r4, 0x901D
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ori r4, r4, 0x0024 # change to 901D0024 (stw r0,36(r29))
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stw r4, 0(r3)
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dcbf r0, r3
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icbi r0, r3
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addi r3, r3, 4 # next word
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lis r4, 0x4800
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ori r4, r4, 0x0018 # change to 48000018 (b 0x8134aa60)
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stw r4, 0(r3)
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dcbf r0, r3
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icbi r0, r3
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exitncf5:
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blr # return
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.globl movedvdhooks # r3 address
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movedvdhooks:
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lis r6, 0x4182
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ori r6, r6, 0x0120 # beq loc_813A7938
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findmd1:
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addi r3, r3, 4 # next word
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lwz r5, 0(r3)
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writemd1:
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lis r4, 0x6000
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ori r4, r4, 0x0000 # nop
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stw r4, 0(r3) # result in r3
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dcbf r0, r3 # data cache block flush
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icbi r0, r3
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exitmd1:
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blr # return
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