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Change DBG to DBG_RT for essential kernel patch to trace patch easily

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This commit is contained in:
Sherlocks 2020-03-24 21:55:35 +09:00
parent 446b3cc6f6
commit 26166b6aec
1 changed files with 54 additions and 38 deletions
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92
rEFIt_UEFI/Platform/kernel_patcher.cpp
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@ -82,7 +82,7 @@ VOID KernelPatcher_64(VOID* kernelData, LOADER_ENTRY *Entry)
UINT32 cpuid_family_addr=0, cpuid_model_addr=0;
UINT64 os_version;
DBG_RT(Entry, "\nLooking for _cpuid_set_info _panic ...\n");
DBG_RT(Entry, "Looking for _cpuid_set_info _panic ...\n");
// Determine location of _cpuid_set_info _panic call for reference
// basically looking for info_p->cpuid_model = bitfield32(reg[eax], 7, 4);
@ -602,7 +602,7 @@ BOOLEAN KernelPatchPm(VOID *kernelData, LOADER_ENTRY *Entry)
return FALSE;
}
DBG("Patching kernel power management...\n");
DBG_RT(Entry, "Patching kernel power management...\n");
for (; Ptr < End; Ptr += 2) {
// check for xcpm_scope_msr common 0xE2 prologue
// E2000000 XX000000 00000000 00000000 00040000 00000000
@ -629,15 +629,20 @@ BOOLEAN KernelPatchPm(VOID *kernelData, LOADER_ENTRY *Entry)
if (CompareWithMask(Ptr[3], 0xFFFFFFFFFFFFFF00, 0x000000001E000000) && 0 == Ptr[4] && 0 == Ptr[5]) {
// zero out 0xE2 MSR and CPU mask
Ptr[0] = 0;
DBG("Kernel power management: entry found and patched\n");
DBG_RT(Entry, "Kernel power management: entry 1E found and patched\n");
// XX00007E 00000000 00000000 00000000 00000000 00000000
} else if (CompareWithMask(Ptr[3], 0xFFFFFFFFFFFFFF00, 0x000000007E000000) && 0 == Ptr[4] && 0 == Ptr[5]) {
// zero out 0xE2 MSR and CPU mask
Ptr[0] = 0;
DBG("Kernel power management: entry found and patched\n");
DBG_RT(Entry, "Kernel power management: entry 7E found and patched\n");
}
}
}
if (Entry->KernelAndKextPatches->KPDebug) {
gBS->Stall(3000000);
}
return TRUE;
}
@ -656,7 +661,7 @@ BOOLEAN KernelPanicNoKextDump(VOID *kernelData)
return FALSE;
}
BOOLEAN KernelLapicPatch_64(VOID *kernelData)
BOOLEAN KernelLapicPatch_64(VOID *kernelData, LOADER_ENTRY *Entry)
{
// Credits to donovan6000 and Sherlocks for providing the lapic kernel patch source used to build this function
@ -664,7 +669,7 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
UINT32 patchLocation1 = 0, patchLocation2 = 0;
UINT32 i, y;
DBG("Looking for Lapic panic call (64-bit) Start\n");
DBG_RT(Entry, "Looking for Lapic panic call (64-bit) Start\n");
for (i = 0; i < 0x1000000; i++) {
if (bytes[i+0] == 0x65 && bytes[i+1] == 0x8B && bytes[i+2] == 0x04 && bytes[i+3] == 0x25 &&
@ -672,28 +677,28 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
bytes[i+45] == 0x65 && bytes[i+46] == 0x8B && bytes[i+47] == 0x04 && bytes[i+48] == 0x25 &&
bytes[i+49] == 0x3C && bytes[i+50] == 0x00 && bytes[i+51] == 0x00 && bytes[i+52] == 0x00) {
patchLocation1 = i+40;
DBG("Found Lapic panic (10.6) at 0x%08x\n", patchLocation1);
DBG_RT(Entry, "Found Lapic panic (10.6) at 0x%08x\n", patchLocation1);
break;
} else if (bytes[i+0] == 0x65 && bytes[i+1] == 0x8B && bytes[i+2] == 0x04 && bytes[i+3] == 0x25 &&
bytes[i+4] == 0x14 && bytes[i+5] == 0x00 && bytes[i+6] == 0x00 && bytes[i+7] == 0x00 &&
bytes[i+35] == 0x65 && bytes[i+36] == 0x8B && bytes[i+37] == 0x04 && bytes[i+38] == 0x25 &&
bytes[i+39] == 0x14 && bytes[i+40] == 0x00 && bytes[i+41] == 0x00 && bytes[i+42] == 0x00) {
patchLocation1 = i+30;
DBG("Found Lapic panic (10.7 - 10.8) at 0x%08x\n", patchLocation1);
DBG_RT(Entry, "Found Lapic panic (10.7 - 10.8) at 0x%08x\n", patchLocation1);
break;
} else if (bytes[i+0] == 0x65 && bytes[i+1] == 0x8B && bytes[i+2] == 0x04 && bytes[i+3] == 0x25 &&
bytes[i+4] == 0x1C && bytes[i+5] == 0x00 && bytes[i+6] == 0x00 && bytes[i+7] == 0x00 &&
bytes[i+36] == 0x65 && bytes[i+37] == 0x8B && bytes[i+38] == 0x04 && bytes[i+39] == 0x25 &&
bytes[i+40] == 0x1C && bytes[i+41] == 0x00 && bytes[i+42] == 0x00 && bytes[i+43] == 0x00) {
patchLocation1 = i+31;
DBG("Found Lapic panic (10.9) at 0x%08x\n", patchLocation1);
DBG_RT(Entry, "Found Lapic panic (10.9) at 0x%08x\n", patchLocation1);
break;
// 00 29 C7 78 XX 31 DB 8D 47 FA 83
} else if (bytes[i+0] == 0x00 && bytes[i+1] == 0x29 && bytes[i+2] == 0xC7 && bytes[i+3] == 0x78 &&
//(bytes[i+4] == 0x3F || bytes[i+4] == 0x4F) && // 3F:10.10-10.12/4F:10.13+
bytes[i+5] == 0x31 && bytes[i+6] == 0xDB && bytes[i+7] == 0x8D && bytes[i+8] == 0x47 &&
bytes[i+9] == 0xFA && bytes[i+10] == 0x83) {
DBG("Found Lapic panic Base (10.10 - recent macOS)\n");
DBG_RT(Entry, "Found Lapic panic Base (10.10 - recent macOS)\n");
for (y = i; y < 0x1000000; y++) {
// Lapic panic patch, by vit9696
// mov eax, gs:XX
@ -704,7 +709,7 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
bytes[y+5] == 0x00 && bytes[y+6] == 0x00 && bytes[y+7] == 0x00 &&
bytes[y+8] == 0x3B && bytes[y+9] == 0x05 && bytes[y+13] == 0x00) {
patchLocation1 = y;
DBG("Found Lapic panic (10.10 - recent macOS) at 0x%08x\n", patchLocation1);
DBG_RT(Entry, "Found Lapic panic (10.10 - recent macOS) at 0x%08x\n", patchLocation1);
break;
}
}
@ -713,7 +718,7 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
}
if (!patchLocation1) {
DBG("Can't find Lapic panic, kernel patch aborted.\n");
DBG_RT(Entry, "Can't find Lapic panic, kernel patch aborted.\n");
return FALSE;
}
@ -721,18 +726,18 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
if (bytes[patchLocation1 + 0] == 0x90 && bytes[patchLocation1 + 1] == 0x90 &&
bytes[patchLocation1 + 2] == 0x90 && bytes[patchLocation1 + 3] == 0x90 &&
bytes[patchLocation1 + 4] == 0x90) {
DBG("Lapic panic already patched, kernel file (10.6 - 10.9) manually patched?\n");
DBG_RT(Entry, "Lapic panic already patched, kernel file (10.6 - 10.9) manually patched?\n");
return FALSE;
} else if (bytes[patchLocation1 + 0] == 0x31 && bytes[patchLocation1 + 1] == 0xC0 &&
bytes[patchLocation1 + 2] == 0x90 && bytes[patchLocation1 + 3] == 0x90) {
DBG("Lapic panic already patched, kernel file (10.10 - recent macOS) manually patched?\n");
DBG_RT(Entry, "Lapic panic already patched, kernel file (10.10 - recent macOS) manually patched?\n");
return FALSE;
} else {
if (bytes[patchLocation1 + 8] == 0x3B && bytes[patchLocation1 + 9] == 0x05 &&
bytes[patchLocation1 + 13] == 0x00) {
// 65 8B 04 25 XX 00 00 00 3B 05 XX XX XX 00
// 31 C0 90 90 90 90 90 90 90 90 90 90 90 90
DBG("Patched Lapic panic (10.10 - recent macOS)\n");
DBG_RT(Entry, "Patched Lapic panic (10.10 - recent macOS)\n");
bytes[patchLocation1 + 0] = 0x31;
bytes[patchLocation1 + 1] = 0xC0;
for (i = 2; i < 14; i++) {
@ -745,7 +750,7 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
//(bytes[i+4] == 0x3F || bytes[i+4] == 0x4F) && // 3F:10.10-10.12/4F:10.13+
bytes[i+5] == 0x31 && bytes[i+6] == 0xDB && bytes[i+7] == 0x8D && bytes[i+8] == 0x47 &&
bytes[i+9] == 0xFA && bytes[i+10] == 0x83) {
DBG("Found Lapic panic master Base (10.10 - recent macOS)\n");
DBG_RT(Entry, "Found Lapic panic master Base (10.10 - recent macOS)\n");
for (y = i; y < 0x1000000; y++) {
// Lapic panic master patch, by vit9696
// cmp cs:_debug_boot_arg, 0
@ -753,7 +758,7 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
if (bytes[y+0] == 0xE8 && bytes[y+3] == 0xFF && bytes[y+4] == 0xFF &&
bytes[y+5] == 0x83 && bytes[y+10] == 0x00 && bytes[y+11] == 0x00) {
patchLocation2 = y;
DBG("Found Lapic panic master (10.10 - recent macOS) at 0x%08x\n", patchLocation2);
DBG_RT(Entry, "Found Lapic panic master (10.10 - recent macOS) at 0x%08x\n", patchLocation2);
break;
}
}
@ -762,16 +767,16 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
}
if (!patchLocation2) {
DBG("Can't find Lapic panic master (10.10 - recent macOS), kernel patch aborted.\n");
DBG_RT(Entry, "Can't find Lapic panic master (10.10 - recent macOS), kernel patch aborted.\n");
return FALSE;
}
// Already patched? May be running a non-vanilla kernel already?
if (bytes[patchLocation2 + 5] == 0x31 && bytes[patchLocation2 + 6] == 0xC0) {
DBG("Lapic panic master already patched, kernel file (10.10 - recent macOS) manually patched?\n");
DBG_RT(Entry, "Lapic panic master already patched, kernel file (10.10 - recent macOS) manually patched?\n");
return FALSE;
} else {
DBG("Patched Lapic panic master (10.10 - recent macOS)\n");
DBG_RT(Entry, "Patched Lapic panic master (10.10 - recent macOS)\n");
// E8 XX XX FF FF 83 XX XX XX XX 00 00
// E8 XX XX FF FF 31 C0 90 90 90 90 90
bytes[patchLocation2 + 5] = 0x31;
@ -781,16 +786,21 @@ BOOLEAN KernelLapicPatch_64(VOID *kernelData)
}
}
} else {
DBG("Patched Lapic panic (10.6 - 10.9)\n");
DBG_RT(Entry, "Patched Lapic panic (10.6 - 10.9)\n");
for (i = 0; i < 5; i++) {
bytes[patchLocation1 + i] = 0x90;
}
}
}
if (Entry->KernelAndKextPatches->KPDebug) {
gBS->Stall(3000000);
}
return TRUE;
}
BOOLEAN KernelLapicPatch_32(VOID *kernelData)
BOOLEAN KernelLapicPatch_32(VOID *kernelData, LOADER_ENTRY *Entry)
{
// Credits to donovan6000 and Sherlocks for providing the lapic kernel patch source used to build this function
@ -798,7 +808,7 @@ BOOLEAN KernelLapicPatch_32(VOID *kernelData)
UINT32 patchLocation = 0;
UINT32 i;
DBG("Looking for Lapic panic call (32-bit) Start\n");
DBG_RT(Entry, "Looking for Lapic panic call (32-bit) Start\n");
for (i = 0; i < 0x1000000; i++) {
if (bytes[i+0] == 0x65 && bytes[i+1] == 0xA1 && bytes[i+2] == 0x0C && bytes[i+3] == 0x00 &&
@ -806,13 +816,13 @@ BOOLEAN KernelLapicPatch_32(VOID *kernelData)
bytes[i+30] == 0x65 && bytes[i+31] == 0xA1 && bytes[i+32] == 0x0C && bytes[i+33] == 0x00 &&
bytes[i+34] == 0x00 && bytes[i+35] == 0x00) {
patchLocation = i+25;
DBG("Found Lapic panic at 0x%08x\n", patchLocation);
DBG_RT(Entry, "Found Lapic panic at 0x%08x\n", patchLocation);
break;
}
}
if (!patchLocation) {
DBG("Can't find Lapic panic, kernel patch aborted.\n");
DBG_RT(Entry, "Can't find Lapic panic, kernel patch aborted.\n");
return FALSE;
}
@ -821,14 +831,19 @@ BOOLEAN KernelLapicPatch_32(VOID *kernelData)
if (bytes[patchLocation + 0] == 0x90 && bytes[patchLocation + 1] == 0x90 &&
bytes[patchLocation + 2] == 0x90 && bytes[patchLocation + 3] == 0x90 &&
bytes[patchLocation + 4] == 0x90) {
DBG("Lapic panic already patched, kernel file manually patched?\n");
DBG_RT(Entry, "Lapic panic already patched, kernel file manually patched?\n");
return FALSE;
} else {
DBG("Patched Lapic panic (32-bit)\n");
DBG_RT(Entry, "Patched Lapic panic (32-bit)\n");
for (i = 0; i < 5; i++) {
bytes[patchLocation + i] = 0x90;
}
}
if (Entry->KernelAndKextPatches->KPDebug) {
gBS->Stall(3000000);
}
return TRUE;
}
@ -1856,7 +1871,7 @@ KernelAndKextPatcherInit(IN LOADER_ENTRY *Entry)
is64BitKernel = TRUE;
} else {
// not valid Mach-O header - exiting
DBG_RT(Entry, "Kernel not found at 0x%p - skipping patches!", KernelData);
DBG_RT(Entry, "Kernel not found at 0x%p - skipping patches!\n", KernelData);
KernelData = NULL;
return;
}
@ -1889,7 +1904,7 @@ KernelAndKextsPatcherStart(IN LOADER_ENTRY *Entry)
DBG_RT(Entry, "\nKernelToPatch: ");
DBG_RT(Entry, "Kernels patches: %d\n", Entry->KernelAndKextPatches->NrKernels);
if (gSettings.KernelPatchesAllowed && (Entry->KernelAndKextPatches->KernelPatches != NULL) && Entry->KernelAndKextPatches->NrKernels) {
DBG_RT(Entry, "Enabled: ");
DBG_RT(Entry, "Enabled: \n");
KernelAndKextPatcherInit(Entry);
if (KernelData == NULL) goto NoKernelData;
patchedOk = KernelUserPatch(KernelData, Entry);
@ -1904,14 +1919,14 @@ KernelAndKextsPatcherStart(IN LOADER_ENTRY *Entry)
//
// Kernel patches
//
DBG_RT(Entry, "Enabled: ");
DBG_RT(Entry, "Enabled: \n");
KernelAndKextPatcherInit(Entry);
if (KernelData == NULL) goto NoKernelData;
if(is64BitKernel) {
DBG_RT(Entry, "64 bit patch ...");
DBG_RT(Entry, "64 bit patch ...\n");
KernelPatcher_64(KernelData, Entry);
} else {
DBG_RT(Entry, "32 bit patch ...");
DBG_RT(Entry, "32 bit patch ...\n");
KernelPatcher_32(KernelData, Entry->OSVersion);
}
DBG_RT(Entry, " OK\n");
@ -1933,7 +1948,7 @@ KernelAndKextsPatcherStart(IN LOADER_ENTRY *Entry)
// CPU power management patch for haswell with locked msr
DBG_RT(Entry, "\nKernelPm patch: ");
if (Entry->KernelAndKextPatches->KPKernelPm) {
DBG_RT(Entry, "Enabled: ");
DBG_RT(Entry, "Enabled: \n");
KernelAndKextPatcherInit(Entry);
if (KernelData == NULL) goto NoKernelData;
patchedOk = FALSE;
@ -1948,7 +1963,7 @@ KernelAndKextsPatcherStart(IN LOADER_ENTRY *Entry)
// Patch to not dump kext at panic (c)vit9696
DBG_RT(Entry, "\nPanicNoKextDump patch: ");
if (Entry->KernelAndKextPatches->KPPanicNoKextDump) {
DBG_RT(Entry, "Enabled: ");
DBG_RT(Entry, "Enabled: \n");
KernelAndKextPatcherInit(Entry);
if (KernelData == NULL) goto NoKernelData;
patchedOk = KernelPanicNoKextDump(KernelData);
@ -1961,14 +1976,15 @@ KernelAndKextsPatcherStart(IN LOADER_ENTRY *Entry)
// Lapic Panic Kernel Patch
DBG_RT(Entry, "\nKernelLapic patch: ");
if (Entry->KernelAndKextPatches->KPKernelLapic) {
DBG_RT(Entry, "Enabled: \n");
KernelAndKextPatcherInit(Entry);
if (KernelData == NULL) goto NoKernelData;
if(is64BitKernel) {
DBG_RT(Entry, "64-bit patch ...");
patchedOk = KernelLapicPatch_64(KernelData);
DBG_RT(Entry, "64-bit patch ...\n");
patchedOk = KernelLapicPatch_64(KernelData, Entry);
} else {
DBG_RT(Entry, "32-bit patch ...");
patchedOk = KernelLapicPatch_32(KernelData);
DBG_RT(Entry, "32-bit patch ...\n");
patchedOk = KernelLapicPatch_32(KernelData, Entry);
}
DBG_RT(Entry, patchedOk ? " OK\n" : " FAILED!\n");
} else {