X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fppc%2Fkernel%2Ftraps.c;h=99015bb0e7810da0dc91afa56c0b2b8d3c637742;hb=refs%2Fheads%2Fvserver;hp=aa9dd0d07ec9251cffbc41befe3a1ca0ebdbe440;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c
index aa9dd0d07..99015bb0e 100644
--- a/arch/ppc/kernel/traps.c
+++ b/arch/ppc/kernel/traps.c
@@ -1,6 +1,4 @@
 /*
- *  arch/ppc/kernel/traps.c
- *
  *  Copyright (C) 1995-1996  Gary Thomas (gdt@linuxppc.org)
  *
  *  This program is free software; you can redistribute it and/or
@@ -27,10 +25,10 @@
 #include <linux/user.h>
 #include <linux/a.out.h>
 #include <linux/interrupt.h>
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/prctl.h>
+#include <linux/bug.h>
 
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>
@@ -122,7 +120,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 	 * generate the same exception over and over again and we get
 	 * nowhere.  Better to kill it and let the kernel panic.
 	 */
-	if (current->pid == 1) {
+	if (is_init(current)) {
 		__sighandler_t handler;
 
 		spin_lock_irq(&current->sighand->siglock);
@@ -319,7 +317,7 @@ void machine_check_exception(struct pt_regs *regs)
 	if (reason & MCSR_BUS_RBERR)
 		printk("Bus - Read Data Bus Error\n");
 	if (reason & MCSR_BUS_WBERR)
-		printk("Bus - Read Data Bus Error\n");
+		printk("Bus - Write Data Bus Error\n");
 	if (reason & MCSR_BUS_IPERR)
 		printk("Bus - Instruction Parity Error\n");
 	if (reason & MCSR_BUS_RPERR)
@@ -562,64 +560,9 @@ static void emulate_single_step(struct pt_regs *regs)
 	}
 }
 
-/*
- * Look through the list of trap instructions that are used for BUG(),
- * BUG_ON() and WARN_ON() and see if we hit one.  At this point we know
- * that the exception was caused by a trap instruction of some kind.
- * Returns 1 if we should continue (i.e. it was a WARN_ON) or 0
- * otherwise.
- */
-extern struct bug_entry __start___bug_table[], __stop___bug_table[];
-
-#ifndef CONFIG_MODULES
-#define module_find_bug(x)	NULL
-#endif
-
-struct bug_entry *find_bug(unsigned long bugaddr)
-{
-	struct bug_entry *bug;
-
-	for (bug = __start___bug_table; bug < __stop___bug_table; ++bug)
-		if (bugaddr == bug->bug_addr)
-			return bug;
-	return module_find_bug(bugaddr);
-}
-
-int check_bug_trap(struct pt_regs *regs)
+int is_valid_bugaddr(unsigned long addr)
 {
-	struct bug_entry *bug;
-	unsigned long addr;
-
-	if (regs->msr & MSR_PR)
-		return 0;	/* not in kernel */
-	addr = regs->nip;	/* address of trap instruction */
-	if (addr < PAGE_OFFSET)
-		return 0;
-	bug = find_bug(regs->nip);
-	if (bug == NULL)
-		return 0;
-	if (bug->line & BUG_WARNING_TRAP) {
-		/* this is a WARN_ON rather than BUG/BUG_ON */
-#ifdef CONFIG_XMON
-		xmon_printf(KERN_ERR "Badness in %s at %s:%ld\n",
-		       bug->function, bug->file,
-		       bug->line & ~BUG_WARNING_TRAP);
-#endif /* CONFIG_XMON */		
-		printk(KERN_ERR "Badness in %s at %s:%ld\n",
-		       bug->function, bug->file,
-		       bug->line & ~BUG_WARNING_TRAP);
-		dump_stack();
-		return 1;
-	}
-#ifdef CONFIG_XMON
-	xmon_printf(KERN_CRIT "kernel BUG in %s at %s:%ld!\n",
-	       bug->function, bug->file, bug->line);
-	xmon(regs);
-#endif /* CONFIG_XMON */
-	printk(KERN_CRIT "kernel BUG in %s at %s:%ld!\n",
-	       bug->function, bug->file, bug->line);
-
-	return 0;
+	return addr >= PAGE_OFFSET;
 }
 
 void program_check_exception(struct pt_regs *regs)
@@ -674,7 +617,9 @@ void program_check_exception(struct pt_regs *regs)
 		/* trap exception */
 		if (debugger_bpt(regs))
 			return;
-		if (check_bug_trap(regs)) {
+
+		if (!(regs->msr & MSR_PR) &&  /* not user-mode */
+		    report_bug(regs->nip) == BUG_TRAP_TYPE_WARN) {
 			regs->nip += 4;
 			return;
 		}
@@ -751,8 +696,9 @@ void nonrecoverable_exception(struct pt_regs *regs)
 
 void trace_syscall(struct pt_regs *regs)
 {
-	printk("Task: %p(%d), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
-	       current, current->pid, regs->nip, regs->link, regs->gpr[0],
+	printk("Task: %p(%d[#%u]), PC: %08lX/%08lX, Syscall: %3ld, Result: %s%ld    %s\n",
+	       current, current->pid, current->xid,
+	       regs->nip, regs->link, regs->gpr[0],
 	       regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());
 }