_KiGetTickCount:
_KiCallbackReturn:
-_KiRaiseAssertion:
/* FIXME: TODO */
UNHANDLED_PATH
/* FIXME: TODO */
UNHANDLED_PATH
+.func KiRaiseAssertion
+TRAP_FIXUPS kira_a, kira_t, DoFixupV86, DoFixupAbios
+_KiRaiseAssertion:
+
+ /* Push error code */
+ push 0
+
+ /* Enter trap */
+ TRAP_PROLOG kira_a, kira_t
+
+ /*
+ * Modify EIP so it points to the faulting instruction and set it as the
+ * exception address. Note that the 'int 2C' instruction used for this call
+ * is 2 bytes long as opposed to 1 byte 'int 3'.
+ */
+ sub dword ptr [ebp+KTRAP_FRAME_EIP], 2
+ mov ebx, [ebp+KTRAP_FRAME_EIP]
+
+ /* Raise an assertion failure */
+ mov eax, STATUS_ASSERTION_FAILURE
+ jmp _DispatchNoParam
+.endfunc
+
.func KiDebugService
TRAP_FIXUPS kids_a, kids_t, DoFixupV86, DoFixupAbios
_KiDebugService:
/* Enter trap */
TRAP_PROLOG kit3_a, kit3_t
- /* Set status code */
- mov eax, 0 //STATUS_SUCCESS
+ /*
+ * Set the special code to indicate that this is a software breakpoint
+ * and not a debug service call
+ */
+ mov eax, BREAKPOINT_BREAK
/* Check for V86 */
PrepareInt3:
/* Enter V86 Trap */
V86_TRAP_PROLOG kit6_a, kit6_v
+VdmOpCodeFault:
/* Not yet supported (Invalid OPCODE from V86) */
UNHANDLED_PATH
/* Enter trap */
TRAP_PROLOG kit6_a, kit6_t
+DispatchLockErrata:
/* Check if this happened in kernel mode */
test byte ptr [ebp+KTRAP_FRAME_CS], MODE_MASK
jz KmodeOpcode
NoFixUp:
mov edi, cr2
- /* REACTOS Mm Hack of Doom */
+ /* Check if this processor has the cmpxchg8b lock errata */
+ cmp byte ptr _KiI386PentiumLockErrataPresent, 0
+ jnz HandleLockErrata
+
+NotLockErrata:
+ /* HACK: Handle page faults with interrupts disabled */
test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_INTERRUPT_MASK
je HandlePf
/* Enable interrupts and check if we got here with interrupts disabled */
sti
- /* test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_INTERRUPT_MASK
- jz IllegalState */
+#ifdef HACK_ABOVE_FIXED
+ test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_INTERRUPT_MASK
+ jz IllegalState
+#endif
HandlePf:
/* Send trap frame and check if this is kernel-mode or usermode */
/* FIXME: NOT SUPPORTED */
UNHANDLED_PATH
+
+HandleLockErrata:
+
+ /* Fail if this isn't a write fault */
+ test word ptr [ebp+KTRAP_FRAME_ERROR_CODE], 0x4
+ jnz NotLockErrata
+
+ /* Also make sure the page fault is for IDT entry 6 */
+ mov eax, PCR[KPCR_IDT]
+ add eax, 0x30
+ cmp eax, edi
+ jne NotLockErrata
+
+ /*
+ * This is a write fault to the Invalid Opcode handler entry.
+ * We assume this is the lock errata and not a real write fault.
+ */
+
+ /* Clear the error code */
+ and dword ptr [ebp+KTRAP_FRAME_ERROR_CODE], 0
+
+ /* Check if this happened in V86 mode */
+ test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
+ jnz VdmOpCodeFault
+
+ /* Dispatch this to the invalid opcode handler */
+ jmp DispatchLockErrata
.endfunc
.func KiTrap0F