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Wire thread startup frame to return to user-mode switch or system thread exit handler
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This commit is contained in:
Aiken Harris
2026-06-14 01:34:24 +02:00
parent e035666f7a
commit 89681897d7
4 changed files with 40 additions and 0 deletions
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6
xtoskrnl/ke/i686/kthread.cc
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@@ -99,6 +99,9 @@ KE::KThread::InitializeThreadContext(IN PKTHREAD Thread,
ThreadFrame->TrapFrame.SegDs |= RPL_MASK;
ThreadFrame->TrapFrame.SegEs |= RPL_MASK;
ThreadFrame->TrapFrame.SegSs |= RPL_MASK;
/* Set the routine that will handle the thread finishing its initialization and transition it to UserMode */
ThreadFrame->StartFrame.Return = (ULONG)SwitchToUserMode;
}
else
{
@@ -112,6 +115,9 @@ KE::KThread::InitializeThreadContext(IN PKTHREAD Thread,
/* Set initial floating point state */
ThreadFrame->NpxFrame.FxArea.ControlWord = 0x27F;
ThreadFrame->NpxFrame.FxArea.MxCsr = 0x1F80;
/* Set the routine that will handle a system thread that unexpectedly finished its execution */
ThreadFrame->StartFrame.Return = (ULONG)HandleSystemThreadExit;
}
/* Initialize thread startup information */