5 Copyright © 1995-2011, The AROS Development Team. All rights reserved.
8 Desc: Internal description of the ETask structure
12 #include <exec/interrupts.h>
13 #include <exec/tasks.h>
16 #include "mungwallextra.h"
18 /* Known alert context types */
21 #define AT_MUNGWALL 0x02
22 #define AT_MEMORY 0x03
24 /* Alert data. Can have different contents, depending on what actually happened */
29 struct ExceptionContext acpu
;
30 struct MungwallContext amw
;
37 struct ETask iet_ETask
;
41 APTR iet_RT
; /* Structure for resource tracking */
42 APTR iet_Context
; /* Structure to store CPU registers */
45 ULONG iet_AlertCode
; /* Alert code for crash handler */
46 UBYTE iet_AlertType
; /* Type of the alert context */
47 UBYTE iet_AlertFlags
; /* See below */
48 APTR iet_AlertLocation
; /* Alert location for crash handler */
49 APTR iet_AlertStack
; /* Frame pointer for stack backtrace */
50 struct AlertContext iet_AlertData
; /* Extra data coming with the crash */
53 #define GetIntETask(task) ((struct IntETask *)(((struct Task *) \
54 (task))->tc_UnionETask.tc_ETask))
55 #define IntETask(etask) ((struct IntETask *)(etask))
58 #define AF_Alert 0x01 /* The task is in alert state */
59 #define AF_Location 0x02 /* iet_AlertLocation is filled in */
62 * This function resets crash status of the task:
63 * - AF_Alert flag serves as an actual indicator of crash status.
64 * If we enter Alert() with this flag already set, this is
65 * considered a nested alert and is directed to supervisor-mode routine.
66 * - AF_Location flag can also be set only once. It is either set explicitly
67 * before calling Alert(), or it is set by Alert() routine itself. So we clear
68 * it in order for Alert() to be able to remember it if task ever alerts again.
69 * - iet_AlertType specifies type of alert context (if any). We make sure
70 * it is clear so as next time Alert() will not display old information.
72 static inline void ResetETask(struct IntETask
*etask
)
74 etask
->iet_AlertType
= AT_NONE
;
75 etask
->iet_AlertFlags
= 0;