X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FKernel%2Fdebug.c;h=5bcbcb8e03917701eb93ce43c59cba2122ecd1d7;hb=573469df47d366903d780ca563c9f2da18f2bf62;hp=fe063c840bdc535e994bbee68d28c4ffba7a4650;hpb=8e1f78107cc9aa137de29e0c9df3a1fccb483b67;p=tpg%2Facess2.git

diff --git a/KernelLand/Kernel/debug.c b/KernelLand/Kernel/debug.c
index fe063c84..5bcbcb8e 100644
--- a/KernelLand/Kernel/debug.c
+++ b/KernelLand/Kernel/debug.c
@@ -7,12 +7,11 @@
 
 #define	DEBUG_MAX_LINE_LEN	256
 #define	LOCK_DEBUG_OUTPUT	1	// Avoid interleaving of output lines?
-#define TRACE_TO_KTERM	0	// Send ENTER/DEBUG/LEAVE to debug?
+#define TRACE_TO_KTERM  	0	// Send ENTER/DEBUG/LEAVE to debug?
 
 // === IMPORTS ===
 extern void	Threads_Dump(void);
-extern void	Heap_Dump(void)
-		;
+extern void	Heap_Dump(void);
 extern void	KernelPanic_SetMode(void);
 extern void	KernelPanic_PutChar(char Ch);
 extern void	IPStack_SendDebugText(const char *Text);
@@ -24,7 +23,6 @@ void	Debug_DbgOnlyFmt(const char *format, va_list args);
 void	Debug_FmtS(int bUseKTerm, const char *format, ...);
 void	Debug_Fmt(int bUseKTerm, const char *format, va_list args);
 void	Debug_SetKTerminal(const char *File);
-void	LogFV(const char *Fmt, va_list args);
 
 // === GLOBALS ===
  int	gDebug_Level = 0;
@@ -42,7 +40,10 @@ static void Debug_Putchar(char ch)
 {
 	Debug_PutCharDebug(ch);
 	
-	if( !gbDebug_IsKPanic )
+	if( gbDebug_IsKPanic )
+		KernelPanic_PutChar(ch);
+
+	if( gbDebug_IsKPanic < 2 )
 	{
 		if(gbInPutChar)	return ;
 		gbInPutChar = 1;
@@ -50,8 +51,6 @@ static void Debug_Putchar(char ch)
 			VFS_Write(giDebug_KTerm, 1, &ch);
 		gbInPutChar = 0;
 	}
-	else
-		KernelPanic_PutChar(ch);
 	
 	if( gbSendNetworkDebug )
 	{
@@ -78,7 +77,7 @@ static void Debug_Puts(int UseKTerm, const char *Str)
 		IPStack_SendDebugText(Str);
 
 	// Output to the kernel terminal
-	if( UseKTerm && !gbDebug_IsKPanic && giDebug_KTerm != -1)
+	if( UseKTerm && gbDebug_IsKPanic < 2 && giDebug_KTerm != -1)
 	{
 		if(gbInPutChar)	return ;
 		gbInPutChar = 1;
@@ -95,12 +94,13 @@ void Debug_DbgOnlyFmt(const char *format, va_list args)
 void Debug_Fmt(int bUseKTerm, const char *format, va_list args)
 {
 	char	buf[DEBUG_MAX_LINE_LEN];
-//	 int	len;
 	buf[DEBUG_MAX_LINE_LEN-1] = 0;
-	/*len = */vsnprintf(buf, DEBUG_MAX_LINE_LEN-1, format, args);
-	//if( len < DEBUG_MAX_LINE )
-		// do something
+	int len = vsnprintf(buf, DEBUG_MAX_LINE_LEN-1, format, args);
 	Debug_Puts(bUseKTerm, buf);
+	if( len > DEBUG_MAX_LINE_LEN-1 ) {
+		// do something
+		Debug_Puts(bUseKTerm, "[...]");
+	}
 	return ;
 }
 
@@ -114,10 +114,17 @@ void Debug_FmtS(int bUseKTerm, const char *format, ...)
 
 void Debug_KernelPanic(void)
 {
-	#if LOCK_DEBUG_OUTPUT
-	SHORTREL(&glDebug_Lock);
-	#endif
-	gbDebug_IsKPanic = 1;
+	// 5 nested panics? Fuck it
+	if( gbDebug_IsKPanic > 5 )
+		HALT_CPU();
+	gbDebug_IsKPanic ++;
+	if( gbDebug_IsKPanic == 1 )
+	{
+		#if LOCK_DEBUG_OUTPUT
+		SHORTREL(&glDebug_Lock);
+		#endif
+		VT_SetTerminal(7);
+	}
 	KernelPanic_SetMode();
 }
 
@@ -130,6 +137,7 @@ void LogF(const char *Fmt, ...)
 	va_list	args;
 
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif
 	
@@ -152,7 +160,8 @@ void Debug(const char *Fmt, ...)
 	va_list	args;
 	
 	#if LOCK_DEBUG_OUTPUT
-	if(!CPU_HAS_LOCK(&glDebug_Lock)) SHORTLOCK(&glDebug_Lock);
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
+	SHORTLOCK(&glDebug_Lock);
 	#endif
 
 	Debug_Puts(0, "Debug: ");
@@ -170,6 +179,7 @@ void Debug(const char *Fmt, ...)
 void LogFV(const char *Fmt, va_list args)
 {
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif
 
@@ -183,6 +193,7 @@ void LogFV(const char *Fmt, va_list args)
 void LogV(const char *Fmt, va_list args)
 {
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif
 
@@ -211,6 +222,7 @@ void Warning(const char *Fmt, ...)
 	va_list	args;
 	
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif
 	
@@ -244,10 +256,11 @@ void Panic(const char *Fmt, ...)
 	Debug_Putchar('\r');
 	Debug_Putchar('\n');
 
-	Threads_Dump();
-	Heap_Dump();
+	Proc_PrintBacktrace();
+	//Threads_Dump();
+	//Heap_Dump();
 
-	for(;;)	;
+	HALT_CPU();
 }
 
 void Debug_SetKTerminal(const char *File)
@@ -272,6 +285,7 @@ void Debug_Enter(const char *FuncName, const char *ArgTypes, ...)
 	tTID	tid = Threads_GetTID();
 	 
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif
 
@@ -332,6 +346,7 @@ void Debug_Log(const char *FuncName, const char *Fmt, ...)
 	tTID	tid = Threads_GetTID();
 
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif
 
@@ -360,6 +375,7 @@ void Debug_Leave(const char *FuncName, char RetType, ...)
 	tTID	tid = Threads_GetTID();
 
 	#if LOCK_DEBUG_OUTPUT
+	if(CPU_HAS_LOCK(&glDebug_Lock))	return ;
 	SHORTLOCK(&glDebug_Lock);
 	#endif