156 lines
2.7 KiB
ArmAsm
156 lines
2.7 KiB
ArmAsm
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.nds
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sdmmc equ 0x80D86F0
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sdmmc_unk1 equ 0x080788C0
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aes_unk equ 0x0805F9E4
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aes_setkey equ 0x08057458
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sdmmc_unk2 equ 0x080786A0
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sdmmc_unk0 equ 0x08062890
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.create "emunand.bin", 0x0801A4C0
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.org 0x0801A4C0
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.arm
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patch000_00:
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stmfd sp!, {r0-r3}
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mov r3, r0
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ldr r1, =orig_sector
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ldr r2, [r3,#4]
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str r2, [r1,#4]
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ldr r0, =sdmmc
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cmp r2, r0
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ldr r2, [r3,#8]
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str r2, [r1]
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beq @@orig_code
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ldr r1, =sdmmc
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str r1, [r3,#4]
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cmp r2, #0
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ldr r0, =nand_offset
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ldrne r0, [r0]
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addne r0, r2
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ldreq r0, [r0, #(ncsd_header_offset - nand_offset)]
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str r0, [r3,#8]
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@@orig_code:
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ldmfd sp!, {r0-r3}
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movs r4, r0
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movs r5, r1
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movs r7, r2
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movs r6, r3
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movs r0, r1, lsl#23
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beq loc_801a534
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stmfd sp!, {r4}
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ldr r4, =(sdmmc_unk0 + 1)
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blx r4
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ldmfd sp!, {r4}
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loc_801a534:
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ldr r0, [r4,#4]
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ldr r1, [r0]
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ldr r1, [r1,#0x18]
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blx r1
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ldr r1, [r4,#4]
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movs r3, r0
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ldr r0, [r1,#0x20]
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movs r2, r5, lsr#9
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mov r12, r0
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ldr r0, [r4,#8]
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str r7, [sp,#4]
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adds r0, r0, r2
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cmp r1, #0
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str r6, [sp,#8]
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str r0, [sp]
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beq loc_801a578
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adds r1, r1, #8
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loc_801a578:
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movs r2, r4
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adds r2, r2, #0xc
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mov r0, r12
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ldr r5, =(sdmmc_unk1 + 1) ; called by the original function
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blx r5
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stmfd sp!, {r0-r3}
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ldr r2, =orig_sector
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ldr r1, [r2]
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str r1, [r4,#8]
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ldr r1, [r2,#4]
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str r1, [r4,#4]
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ldmfd sp!, {r0-r3}
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ldmfd sp!, {r1-r7,lr}
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bx lr
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patch000_01:
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stmfd sp!, {r0-r3}
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mov r3, r0
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ldr r1, =orig_sector
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ldr r2, [r3,#4]
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str r2, [r1,#4]
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ldr r0, =sdmmc
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cmp r2, r0
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ldr r2, [r3,#8]
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str r2, [r1]
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beq @@orig_code
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ldr r1, =sdmmc
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str r1, [r3,#4]
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cmp r2, #0
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ldr r0, =nand_offset
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ldrne r0, [r0]
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addne r0, r2
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ldreq r0, [r0, #(ncsd_header_offset - nand_offset)]
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str r0, [r3,#8]
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@@orig_code:
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ldmfd sp!, {r0-r3}
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movs r4, r0
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movs r5, r1
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movs r7, r2
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movs r6, r3
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movs r0, r1, lsl#23
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beq loc_801a624
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stmfd sp!, {r4}
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ldr r4, =(sdmmc_unk0 + 1)
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blx r4
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ldmfd sp!, {r4}
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loc_801a624:
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ldr r0, [r4,#4]
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ldr r1, [r0]
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ldr r1, [r1,#0x18]
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blx r1
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ldr r1, [r4,#4]
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movs r3, r0
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ldr r0, [r1,#0x20]
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movs r2, r5, lsr#9
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mov r12, r0
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ldr r0, [r4,#8]
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str r7, [sp,#4]
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adds r0, r0, r2
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cmp r1, #0
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str r6, [sp,#8]
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str r0, [sp]
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beq loc_801a668
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adds r1, r1, #8
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loc_801a668:
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movs r2, r4
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adds r2, r2, #0xC
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mov r0, r12
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ldr r5, =(sdmmc_unk2 + 1)
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blx r5
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stmfd sp!, {r0-r3}
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ldr r2, =orig_sector
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ldr r1, [r2]
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str r1, [r4,#8]
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ldr r1, [r2,#4]
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str r1, [r4,#4]
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ldmfd sp!, {r0-r3}
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ldmfd sp!, {r1-r7,lr}
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bx lr
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.pool
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orig_sector: .word 0x00000000
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orig_ptr: .word 0x00000000
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nand_offset: .ascii "NAND" ; for rednand this should be 1
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ncsd_header_offset: .ascii "NCSD" ; depends on nand manufacturer + emunand type (GW/RED)
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;ncsd_header_offset: .word 0x1D7800
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;ncsd_header_offset: .word 0x1DD000
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slot0x25keyX:
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.word 0xABD8E7CE
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.word 0xAE0DC030
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.word 0xE3F50E85
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.word 0xF35AAC82
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.close
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