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This commit is contained in:
Alex 2023-03-03 16:14:13 +02:00
parent aeb175f03b
commit 207eb77160
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
2 changed files with 15 additions and 6 deletions
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13
Architecture/amd64/cpu/GlobalDescriptorTable.cpp
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@ -115,6 +115,7 @@ namespace GlobalDescriptorTable
: "memory", "rax");
CPUStackPointer[Core] = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE));
debug("CPU %d Stack Pointer: %#lx", Core, CPUStackPointer[Core]);
uint64_t Base = (uint64_t)&tss[Core];
uint64_t Limit = Base + sizeof(TaskStateSegment);
@ -136,12 +137,12 @@ namespace GlobalDescriptorTable
asmv("mov %%rsp, %0"
: "=r"(tss[Core].StackPointer[0]));
trace("GDT_KERNEL_CODE: %#lx", GDT_KERNEL_CODE);
trace("GDT_KERNEL_DATA: %#lx", GDT_KERNEL_DATA);
trace("GDT_USER_CODE: %#lx", GDT_USER_CODE);
trace("GDT_USER_DATA: %#lx", GDT_USER_DATA);
trace("GDT_TSS: %#lx", GDT_TSS);
trace("Global Descriptor Table initialized");
debug("GDT_KERNEL_CODE: %#lx", GDT_KERNEL_CODE);
debug("GDT_KERNEL_DATA: %#lx", GDT_KERNEL_DATA);
debug("GDT_USER_CODE: %#lx", GDT_USER_CODE);
debug("GDT_USER_DATA: %#lx", GDT_USER_DATA);
debug("GDT_TSS: %#lx", GDT_TSS);
debug("Global Descriptor Table initialized");
}
SafeFunction void SetKernelStack(void *Stack)

8
Core/StackGuard.cpp
View File

@ -42,12 +42,19 @@ EXTERNC __attribute__((weak, noreturn, no_stack_protector)) void __stack_chk_fai
error("Stack smashing detected!");
debug("Current stack check guard value: %#lx", __stack_chk_guard);
KPrint("\eFF0000Stack smashing detected!");
#if defined(__amd64__) || defined(__i386__)
void *Stack = nullptr;
asmv("movq %%rsp, %0"
: "=r"(Stack));
error("Stack address: %#lx", Stack);
while (1)
asmv("cli; hlt");
#elif defined(__aarch64__)
asmv("wfe");
#endif
CPU::Stop();
}
// https://github.com/gcc-mirror/gcc/blob/master/libssp/ssp.c
@ -57,6 +64,7 @@ EXTERNC __attribute__((weak, noreturn, no_stack_protector)) void __chk_fail(void
for (short i = 0; i < 10; i++)
error("Buffer overflow detected!");
KPrint("\eFF0000Buffer overflow detected!");
#if defined(__amd64__) || defined(__i386__)
while (1)
asmv("cli; hlt");