Add support for soft reset.

This can occur when control-reset is pressed in P8 mode. It’s supposed to reinitialize the AppleTalk stack. In our case, we mark connections to be reset once we're back in GS/OS, since we can't call Marinetti in P8 mode.

afpbridge.c

@@ -14,6 +14,7 @@
 const char bootInfoString[] = "AFPBridge             v1.0b1";
 
 extern Word *unloadFlagPtr;
+extern void resetRoutine(void);
 
 FSTInfoRecGS fstInfoRec;
 
@@ -41,6 +42,11 @@ static struct NotificationProcRec {
 
 NotifyProcRecGS addNotifyProcRec;
 
+LongWord *SoftResetPtr = (LongWord *)0xE11010;
+extern LongWord oldSoftReset;
+
+#define JML 0x5C
+
 void setUnloadFlag(void) {
     if (*unloadFlagPtr == 0)
         *unloadFlagPtr = 1;
@@ -91,18 +97,21 @@ int main(void) {
 
     runQRec.period = 1;
     runQRec.signature = 0xA55A;
-    runQRec.jml = 0x5C;
+    runQRec.jml = JML;
     runQRec.proc = pollTask;
     AddToRunQ((Pointer)&runQRec);
     
     notificationProcRec.Signature = 0xA55A;
     notificationProcRec.Event_flags = 0x20; /* shutdown */
-    notificationProcRec.jml = 0x5C;
+    notificationProcRec.jml = JML;
     notificationProcRec.proc = notificationProc;
     addNotifyProcRec.pCount = 1;
     addNotifyProcRec.procPointer = (ProcPtr)&notificationProcRec;
     AddNotifyProcGS(&addNotifyProcRec);
     
+    oldSoftReset = *SoftResetPtr;
+    *SoftResetPtr = ((LongWord)&resetRoutine << 8) | JML;
+    
     return;
 
 error:

afpinit.asm

@@ -1,13 +1,24 @@
 	case	on
 
 dummy	private
-	jml	InitStart
+	bra	InitStart
 	end
 
 unloadFlagPtr data
 	ds	4
 	end
 
+* This gets called when control-reset is pressed in P8 mode.
+* It's intended to basically reinitialize the whole AppleTalk stack.
+resetRoutine start
+	jsl	oldSoftReset
+	jml	ResetAllSessions
+	end
+
+oldSoftReset start
+	ds	4		; to be modified
+	end
+
 InitStart private
 	tay
 	tsc

aspinterface.c

@@ -62,6 +62,10 @@ LongWord DispatchASPCommand(SPCommandRec *commandRec) {
             goto callOrig;
         }
 
+        for (i = 0; i < MAX_SESSIONS; i++) {
+            if (sessionTbl[i].dsiStatus == needsReset)
+                EndSession(&sessionTbl[i], 0);
+        }
         for (i = 0; i < MAX_SESSIONS; i++) {
             if (sessionTbl[i].dsiStatus == unused)
                 break;
@@ -399,8 +403,15 @@ void PollAllSessions(void) {
     unsigned int i;
 
     for (i = 0; i < MAX_SESSIONS; i++) {
-        if (sessionTbl[i].dsiStatus != unused) {
+        switch (sessionTbl[i].dsiStatus) {
+        case awaitingHeader:
+        case awaitingPayload:
             PollForData(&sessionTbl[i]);
+            break;
+        
+        case needsReset:
+            EndSession(&sessionTbl[i], 0);
+            break;
         }
     }
 }
@@ -419,3 +430,20 @@ void CloseAllSessions(Byte attentionCode) {
     }
 }
 
+/*
+ * Reset the state of all sessions.
+ * Used when control-reset is pressed in P8 mode.  We can't call Marinetti
+ * in P8 mode, but we also don't want to just leak any ipids in use, so
+ * we flag sessions that should be reset when we're back in GS/OS.
+ */
+#pragma databank 1
+void ResetAllSessions(void) {
+    unsigned int i;
+
+    for (i = 0; i < MAX_SESSIONS; i++) {
+        if (sessionTbl[i].dsiStatus != unused) {
+            sessionTbl[i].dsiStatus = needsReset;
+        }
+    }
+}
+#pragma databank 0

aspinterface.h

@@ -20,5 +20,6 @@ void FinishASPCommand(Session *sess);
 void FlagFatalError(Session *sess, Word errorCode);
 void PollAllSessions(void);
 void CloseAllSessions(Byte attentionCode);
+void ResetAllSessions(void);
 
 #endif

session.h

@@ -19,7 +19,8 @@ typedef enum DSISessionStatus {
     unused = 0,
     awaitingHeader,
     awaitingPayload,
-    error
+    error,
+    needsReset  /* set after control-reset in P8 mode */
 } DSISessionStatus;
 
 typedef struct Session {