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RIP history implementation for broken stacks

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This commit is contained in:
Alex
2022-12-14 14:21:48 +02:00
parent 40c26f1232
commit 3828186c56
3 changed files with 50 additions and 4 deletions
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17
Tasking/Task.cpp
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@ -489,6 +489,23 @@ namespace Tasking
CurrentCPU->CurrentThread->Status = TaskStatus::Running;
*Frame = CurrentCPU->CurrentThread->Registers;
// FIXME: Untested
for (int i = 0; i < 128; i++)
{
if (CurrentCPU->CurrentThread->RIPHistory[i] == 0)
{
CurrentCPU->CurrentThread->RIPHistory[i] = Frame->rip;
break;
}
if (i == 127)
{
for (int j = 0; j < 127; j++)
CurrentCPU->CurrentThread->RIPHistory[j] = CurrentCPU->CurrentThread->RIPHistory[j + 1];
CurrentCPU->CurrentThread->RIPHistory[127] = Frame->rip;
}
}
GlobalDescriptorTable::SetKernelStack((void *)((uint64_t)CurrentCPU->CurrentThread->Stack->GetStackTop()));
CPU::x64::writecr3({.raw = (uint64_t)CurrentCPU->CurrentProcess->PageTable});
// Not sure if this is needed, but it's better to be safe than sorry.