Kernel/x86 - Debugging SMP bugs, lead to some fixes and cleanups

[tpg/acess2.git] / Kernel / arch / x86 / kpanic.c

diff --git a/Kernel/arch/x86/kpanic.c b/Kernel/arch/x86/kpanic.c
index ccb1073..9300c69 100644 (file)
--- a/Kernel/arch/x86/kpanic.c
+++ b/Kernel/arch/x86/kpanic.c
@@ -1,23 +1,34 @@
 /*
  * Acess 2 Kernel
- * By John Hodge (thePowersGang)
+ * - By John Hodge (thePowersGang)
+ * 
+ * kpanic.c
  * - x86 Kernel Panic Handler
  */
 
 #include <acess.h>
+#include <proc.h>
 
-
-
+// === CONSTANTS ===
 #define        FB      ((Uint16 *)(KERNEL_BASE|0xB8000))
 #define BGC    0x4F00  // White on Red
 //#define BGC  0xC000  // Black on Bright Red
 //#define BGC  0x1F00  // White on Blue (BSOD!)
 
+// === IMPORTS ===
 extern Uint32  GetEIP(void);
 extern void    Error_Backtrace(Uint32 eip, Uint32 ebp);
+#if USE_MP
+extern void    MP_SendIPIVector(int CPU, Uint8 Vector);
+extern int     giNumCPUs;
+extern int     GetCPUNum(void);
+#endif
 
- int   giKP_Pos = 0;
+// === PROTOTYPES ===
+void   KernelPanic_SetMode(void);
+void   KernelPanic_PutChar(char Ch);
 
+// === CONSTANTS ===
 const struct {
        Uint16  IdxPort;
        Uint16  DatPort;
@@ -57,9 +68,8 @@ const struct {
 };
 #define        NUM_REGVALUES   (sizeof(caRegValues)/sizeof(caRegValues[0]))
 
-// === PROTOTYPES ===
-void   KernelPanic_SetMode(void);
-void   KernelPanic_PutChar(char Ch);
+// === GLOBALS ===
+ int   giKP_Pos = 0;
 
 // === CODE ===
 /**
@@ -89,6 +99,16 @@ void KernelPanic_SetMode(void)
        inb(0x3DA);
        outb(0x3C0, 0x20);
        #endif
+
+       #if USE_MP
+       // Send halt to all processors
+       for( i = 0; i < giNumCPUs; i ++ )
+       {
+               if(i == GetCPUNum())    continue ;
+               FB[i] = BGC|('A'+i);
+               MP_SendIPIVector(i, 0xED);
+       }
+       #endif
        
        // Clear Screen
        for( i = 0; i < 80*25; i++ )