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correct KernelPm patch

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Signed-off-by: SergeySlice <sergey.slice@gmail.com>
This commit is contained in:
SergeySlice 2020-05-05 15:12:01 +03:00
parent 33a9cc85ab
commit 6a4d892667
1 changed files with 10 additions and 21 deletions
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31
rEFIt_UEFI/Platform/kernel_patcher.cpp
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@ -751,7 +751,7 @@ VOID LOADER_ENTRY::KernelCPUIDPatch(UINT8* kernelData)
}
}
#define NEW_PM 0
#define NEW_PM 1
BOOLEAN LOADER_ENTRY::KernelPatchPm(VOID *kernelData)
{
@ -771,7 +771,7 @@ BOOLEAN LOADER_ENTRY::KernelPatchPm(VOID *kernelData)
INTN Num = SearchAndReplace(&Kernel[procLocation], 0x400, findJmp, sizeof(findJmp), patchJmp, 0);
DBG_RT("==> found %lld patterns\n", Num);
//2. procedure xcpm_init
// indirect call to _xcpm_core_scope_msrs and _xcpm_SMT_scope_msrs
// indirect call to _xcpm_core_scope_msrs
// 488D3DDA317600 lea rdi, qword [ds:_xcpm_SMT_scope_msrs]
// BE0B000000 mov esi, 0xb => replace to eb0a
// 31D2 xor edx, edx
@ -785,33 +785,22 @@ BOOLEAN LOADER_ENTRY::KernelPatchPm(VOID *kernelData)
DBG_RT("=> xcpm_core_scope_msrs found at %llx\n", patchLocation1);
if (Kernel[patchLocation1 + 7] == 0xE8) {
DBG_RT("=> patch applied\n");
for (int i=0; i < 0x10; ++i) {
DBG_RT("%02x", Kernel[patchLocation1 + i]);
}
DBG_RT("\n");
Kernel[patchLocation1] = 0xEB;
Kernel[patchLocation1 + 1] = 0x0A;
} else {
DBG_RT("=> patttern not good\n");
for (int i=0; 0x10; ++i) {
DBG_RT("=> pattern not good\n");
for (int i=0; i < 0x10; ++i) {
DBG_RT("%02x", Kernel[patchLocation1 + i]);
}
DBG_RT("\n");
}
}
UINTN symbol2 = searchProc(Kernel, "_xcpm_SMT_scope_msrs", &procLen);
patchLocation1 = FindRelative32(Kernel, procLocation, 0x200, symbol2);
if (patchLocation1 != 0) {
DBG_RT("=> _xcpm_SMT_scope_msrs found at %llx\n", patchLocation1);
if (Kernel[patchLocation1 + 7] == 0xE8) {
DBG_RT("=> patch applied\n");
Kernel[patchLocation1] = 0xEB;
Kernel[patchLocation1 + 1] = 0x0A;
} else {
DBG_RT("=> patttern not good\n");
for (int i=0; 0x10; ++i) {
DBG_RT("%02x", Kernel[patchLocation1 + i]);
}
DBG_RT("\n");
}
}
Stall(10000000);
#else
// Credits to RehabMan for the kernel patch information