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Remap DBAT7 to cover full IOS range

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Spotlight 2022-01-20 19:51:14 -06:00
parent 3338ff8f02
commit 060331284e
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GPG Key ID: 874AA355B3209BDC
1 changed files with 7 additions and 7 deletions
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14
patch_overwrite.go
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@ -119,7 +119,7 @@ var OverwriteIOSPatch = PatchSet{
////////////// //////////////
// We want to write to IOSC_VerifyPublicKeySign at 0x13a73ad4. // We want to write to IOSC_VerifyPublicKeySign at 0x13a73ad4.
// For us, this is mapped to 0x92a73ad4. // For us, this is mapped to 0x92a73ad4.
0x92, 0xa7, 0x3a, 0xd4, 0x93, 0xa7, 0x3a, 0xd4,
// 0x20004770 is equivalent in ARM THUMB to: // 0x20004770 is equivalent in ARM THUMB to:
// mov r0, #0x0 // mov r0, #0x0
// bx lr // bx lr
@ -173,7 +173,7 @@ var OverwriteIOSPatch = PatchSet{
// This is additionally not a patch! // This is additionally not a patch!
// We use this to store our ideal MEM2 mapping. // We use this to store our ideal MEM2 mapping.
0x90, 0x00, 0x1f, 0xff, 0x93, 0x00, 0x01, 0xff,
}, },
}, },
Patch{ Patch{
@ -194,6 +194,11 @@ var OverwriteIOSPatch = PatchSet{
// Apply lower half // Apply lower half
STH(R10, 0x0, R9), STH(R10, 0x0, R9),
// Load a better mapping for upper MEM2.
LWZ(R9, 0x30, R8),
// mtspr DBAT7U, r9
Instruction{0x7d, 0x3e, 0x8b, 0xa6},
// Load address/value pair for IOSC_VerifyPublicKeySign // Load address/value pair for IOSC_VerifyPublicKeySign
LWZ(R9, 0x8, R8), LWZ(R9, 0x8, R8),
LWZ(R10, 0xc, R8), LWZ(R10, 0xc, R8),
@ -226,11 +231,6 @@ var OverwriteIOSPatch = PatchSet{
// bne (last blr) // bne (last blr)
Instruction{0x40, 0x82, 0x00, 0x30}, Instruction{0x40, 0x82, 0x00, 0x30},
// Load a better mapping for upper MEM2.
LWZ(R9, 0x30, R8),
// mtspr DBAT7U, r9
Instruction{0x7d, 0x3e, 0x8b, 0xa6},
// Apply ES_AddTicket // Apply ES_AddTicket
LWZ(R9, 0x18, R8), LWZ(R9, 0x18, R8),
LWZ(R10, 0x1c, R8), LWZ(R10, 0x1c, R8),