patch-2.4.17 linux/arch/sparc/mm/fault.c

• Lines: 71
• Date: Fri Dec 21 16:40:32 2001
• Orig file: linux-2.4.16/arch/sparc/mm/fault.c
• Orig date: Tue Oct 30 23:08:11 2001

diff -Naur -X /home/marcelo/lib/dontdiff linux-2.4.16/arch/sparc/mm/fault.c linux/arch/sparc/mm/fault.c
@@ -1,4 +1,4 @@
-/* $Id: fault.c,v 1.121 2001/10/30 04:54:22 davem Exp $
+/* $Id: fault.c,v 1.122 2001/11/17 07:19:26 davem Exp $
  * fault.c:  Page fault handlers for the Sparc.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
@@ -155,34 +155,47 @@
 asmlinkage int lookup_fault(unsigned long pc, unsigned long ret_pc, 
 			    unsigned long address)
 {
+	struct pt_regs regs;
 	unsigned long g2;
+	unsigned int insn;
 	int i;
-	unsigned insn;
-	struct pt_regs regs;
 	
-	i = search_exception_table (ret_pc, &g2);
+	i = search_exception_table(ret_pc, &g2);
 	switch (i) {
-	/* load & store will be handled by fixup */
-	case 3: return 3;
-	/* store will be handled by fixup, load will bump out */
-	/* for _to_ macros */
-	case 1: insn = (unsigned)pc; if ((insn >> 21) & 1) return 1; break;
-	/* load will be handled by fixup, store will bump out */
-	/* for _from_ macros */
-	case 2: insn = (unsigned)pc; 
-		if (!((insn >> 21) & 1) || ((insn>>19)&0x3f) == 15) return 2; 
+	case 3:
+		/* load & store will be handled by fixup */
+		return 3;
+
+	case 1:
+		/* store will be handled by fixup, load will bump out */
+		/* for _to_ macros */
+		insn = *((unsigned int *) pc);
+		if ((insn >> 21) & 1)
+			return 1;
+		break;
+
+	case 2:
+		/* load will be handled by fixup, store will bump out */
+		/* for _from_ macros */
+		insn = *((unsigned int *) pc);
+		if (!((insn >> 21) & 1) || ((insn>>19)&0x3f) == 15)
+			return 2; 
 		break; 
-	default: break;
-	}
-	memset (&regs, 0, sizeof (regs));
+
+	default:
+		break;
+	};
+
+	memset(&regs, 0, sizeof (regs));
 	regs.pc = pc;
 	regs.npc = pc + 4;
-	__asm__ __volatile__ (
+	__asm__ __volatile__(
 		"rd %%psr, %0\n\t"
 		"nop\n\t"
 		"nop\n\t"
 		"nop\n" : "=r" (regs.psr));
-	unhandled_fault (address, current, &regs);
+	unhandled_fault(address, current, &regs);
+
 	/* Not reached */
 	return 0;
 }