https://git.reactos.org/?p=reactos.git;a=commitdiff;h=92c798c657d5f0a315624b864e3d0b0c03715f6d
commit 92c798c657d5f0a315624b864e3d0b0c03715f6d Author: Timo Kreuzer <[email protected]> AuthorDate: Wed Jul 13 20:26:42 2022 +0200 Commit: Timo Kreuzer <[email protected]> CommitDate: Mon Aug 22 11:22:08 2022 +0200 [NTOSKRNL] Implement KiXmmExceptionHandler --- ntoskrnl/ke/amd64/except.c | 48 +++++++++++++++++++++++++++++++++++++++++++--- ntoskrnl/ke/amd64/trap.S | 4 +++- 2 files changed, 48 insertions(+), 4 deletions(-) diff --git a/ntoskrnl/ke/amd64/except.c b/ntoskrnl/ke/amd64/except.c index de8e2b01697..8410fa4acc6 100644 --- a/ntoskrnl/ke/amd64/except.c +++ b/ntoskrnl/ke/amd64/except.c @@ -672,7 +672,49 @@ NTAPI KiXmmExceptionHandler( IN PKTRAP_FRAME TrapFrame) { - UNIMPLEMENTED; - KeBugCheckWithTf(TRAP_CAUSE_UNKNOWN, 13, 0, 0, 1, TrapFrame); - return -1; + ULONG ExceptionCode; + + if ((TrapFrame->MxCsr & _MM_EXCEPT_INVALID) && + !(TrapFrame->MxCsr & _MM_MASK_INVALID)) + { + /* Invalid operation */ + ExceptionCode = STATUS_FLOAT_INVALID_OPERATION; + } + else if ((TrapFrame->MxCsr & _MM_EXCEPT_DENORM) && + !(TrapFrame->MxCsr & _MM_MASK_DENORM)) + { + /* Denormalized operand. Yes, this is what Windows returns. */ + ExceptionCode = STATUS_FLOAT_INVALID_OPERATION; + } + else if ((TrapFrame->MxCsr & _MM_EXCEPT_DIV_ZERO) && + !(TrapFrame->MxCsr & _MM_MASK_DIV_ZERO)) + { + /* Divide by zero */ + ExceptionCode = STATUS_FLOAT_DIVIDE_BY_ZERO; + } + else if ((TrapFrame->MxCsr & _MM_EXCEPT_OVERFLOW) && + !(TrapFrame->MxCsr & _MM_MASK_OVERFLOW)) + { + /* Overflow */ + ExceptionCode = STATUS_FLOAT_OVERFLOW; + } + else if ((TrapFrame->MxCsr & _MM_EXCEPT_UNDERFLOW) && + !(TrapFrame->MxCsr & _MM_MASK_UNDERFLOW)) + { + /* Underflow */ + ExceptionCode = STATUS_FLOAT_UNDERFLOW; + } + else if ((TrapFrame->MxCsr & _MM_EXCEPT_INEXACT) && + !(TrapFrame->MxCsr & _MM_MASK_INEXACT)) + { + /* Precision */ + ExceptionCode = STATUS_FLOAT_INEXACT_RESULT; + } + else + { + /* Should not happen */ + ASSERT(FALSE); + } + + return ExceptionCode; } diff --git a/ntoskrnl/ke/amd64/trap.S b/ntoskrnl/ke/amd64/trap.S index 73470363a23..9d694518d0f 100644 --- a/ntoskrnl/ke/amd64/trap.S +++ b/ntoskrnl/ke/amd64/trap.S @@ -543,7 +543,9 @@ FUNC KiXmmException jge KiXmmExit /* Dispatch the exception */ - DispatchException eax, 3, 0, 0, 0 + DispatchException eax, 2, 0, [rbp+KTRAP_FRAME_MxCsr], 0 + + // FIXME: STATUS_FLOAT_MULTIPLE_TRAPS / STATUS_FLOAT_MULTIPLE_FAULTS KiXmmExit: /* Return */
