Kernel/x86 - Add IP/SP output to thread dump

[tpg/acess2.git] / KernelLand / Kernel / arch / x86 / proc.c

diff --git a/KernelLand/Kernel/arch/x86/proc.c b/KernelLand/Kernel/arch/x86/proc.c
index 2869c3c..5637985 100644 (file)
--- a/KernelLand/Kernel/arch/x86/proc.c
+++ b/KernelLand/Kernel/arch/x86/proc.c
@@ -24,11 +24,14 @@
 #define DEBUG_DISABLE_DOUBLEFAULT      1
 #define DEBUG_VERY_SLOW_PERIOD 0
 #define DEBUG_NOPREEMPT        1
+#define DISABLE_PIT    0
 
 // === CONSTANTS ===
 // Base is 1193182
 #define TIMER_BASE      1193182
-#if DEBUG_VERY_SLOW_PERIOD
+#if DISABLE_PIT
+# define TIMER_DIVISOR 0xFFFF
+#elif DEBUG_VERY_SLOW_PERIOD
 # define TIMER_DIVISOR 1193    //~10Hz switch, with 10 quantum = 1s per thread
 #else
 # define TIMER_DIVISOR 11932   //~100Hz
@@ -210,7 +213,7 @@ void ArchThreads_Init(void)
        gProcessZero.MemState.CR3 = (Uint)gaInitPageDir - KERNEL_BASE;
        
        // Create Per-Process Data Block
-       if( !MM_Allocate(MM_PPD_CFG) )
+       if( MM_Allocate( (void*)MM_PPD_CFG ) == 0 )
        {
                Panic("OOM - No space for initial Per-Process Config");
        }
@@ -550,27 +553,28 @@ tThread *Proc_SpawnWorker(void (*Fcn)(void*), void *Data)
  */
 Uint Proc_MakeUserStack(void)
 {
-        int    i;
-       Uint    base = USER_STACK_TOP - USER_STACK_SZ;
+       tPage   *base = (void*)(USER_STACK_TOP - USER_STACK_SZ);
        
        // Check Prospective Space
-       for( i = USER_STACK_SZ >> 12; i--; )
-               if( MM_GetPhysAddr( (void*)(base + (i<<12)) ) != 0 )
-                       break;
-       
-       if(i != -1)     return 0;
-       
+       for( Uint i = USER_STACK_SZ/PAGE_SIZE; i--; )
+       {
+               if( MM_GetPhysAddr( base + i ) != 0 )
+               {
+                       Warning("Proc_MakeUserStack: Address %p in use", base + i);
+                       return 0;
+               }
+       }
        // Allocate Stack - Allocate incrementally to clean up MM_Dump output
-       for( i = 0; i < USER_STACK_SZ/0x1000; i++ )
+       for( Uint i = 0; i < USER_STACK_SZ/PAGE_SIZE; i++ )
        {
-               if( !MM_Allocate( base + (i<<12) ) )
+               if( MM_Allocate( base + i ) == 0 )
                {
                        Warning("OOM: Proc_MakeUserStack");
                        return 0;
                }
        }
        
-       return base + USER_STACK_SZ;
+       return (tVAddr)( base + USER_STACK_SZ/PAGE_SIZE );
 }
 
 void Proc_StartUser(Uint Entrypoint, Uint Base, int ArgC, const char **ArgV, int DataSize)
@@ -725,7 +729,9 @@ void Proc_DumpThreadCPUState(tThread *Thread)
                Error_Backtrace(regs->eip, regs->ebp);
                return ;
        }
-       
+
+       Log(" Saved = %p (SP=%p)", Thread->SavedState.EIP, Thread->SavedState.ESP);     
+
        tVAddr  diffFromScheduler = Thread->SavedState.EIP - (tVAddr)SwitchTasks;
        tVAddr  diffFromClone = Thread->SavedState.EIP - (tVAddr)Proc_CloneInt;
        tVAddr  diffFromSpawn = Thread->SavedState.EIP - (tVAddr)NewTaskHeader;