patch-2.4.19 linux-2.4.19/arch/mips64/sgi-ip22/ip22-berr.c

• Lines: 126
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/mips64/sgi-ip22/ip22-berr.c
• Orig date: Sun Sep 9 10:43:02 2001

diff -urN linux-2.4.18/arch/mips64/sgi-ip22/ip22-berr.c linux-2.4.19/arch/mips64/sgi-ip22/ip22-berr.c
@@ -1,125 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1994, 1995, 1996, 1999, 2000 by Ralf Baechle
- * Copyright (C) 1999, 2000 by Silicon Graphics
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-
-#include <asm/module.h>
-#include <asm/uaccess.h>
-#include <asm/paccess.h>
-#include <asm/addrspace.h>
-#include <asm/ptrace.h>
-
-extern asmlinkage void handle_ibe(void);
-extern asmlinkage void handle_dbe(void);
-
-extern const struct exception_table_entry __start___dbe_table[];
-extern const struct exception_table_entry __stop___dbe_table[];
-
-static inline unsigned long
-search_one_table(const struct exception_table_entry *first,
-                 const struct exception_table_entry *last,
-                 unsigned long value)
-{
-	while (first <= last) {
-		const struct exception_table_entry *mid;
-		long diff;
-
-		mid = (last - first) / 2 + first;
-		diff = mid->insn - value;
-		if (diff == 0)
-			return mid->nextinsn;
-		else if (diff < 0)
-			first = mid+1;
-		else
-			last = mid-1;
-	}
-	return 0;
-}
-
-extern spinlock_t modlist_lock;
-
-static inline unsigned long
-search_dbe_table(unsigned long addr)
-{
-	unsigned long ret = 0;
-
-#ifndef CONFIG_MODULES
-	/* There is only the kernel to search.  */
-	ret = search_one_table(__start___dbe_table, __stop___dbe_table-1, addr);
-	return ret;
-#else
-	unsigned long flags;
-
-	/* The kernel is the last "module" -- no need to treat it special.  */
-	struct module *mp;
-	struct archdata *ap;
-
-	spin_lock_irqsave(&modlist_lock, flags);
-	for (mp = module_list; mp != NULL; mp = mp->next) {
-		if (!mod_member_present(mp, archdata_end) ||
-        	    !mod_archdata_member_present(mp, struct archdata,
-						 dbe_table_end))
-			continue;
-		ap = (struct archdata *)(mod->archdata_start);
-
-		if (ap->dbe_table_start == NULL ||
-		    !(mp->flags & (MOD_RUNNING | MOD_INITIALIZING)))
-			continue;
-		ret = search_one_table(ap->dbe_table_start,
-				       ap->dbe_table_end - 1, addr);
-		if (ret)
-			break;
-	}
-	spin_unlock_irqrestore(&modlist_lock, flags);
-	return ret;
-#endif
-}
-
-void do_ibe(struct pt_regs *regs)
-{
-	printk("Got ibe at 0x%lx\n", regs->cp0_epc);
-	show_regs(regs);
-	dump_tlb_addr(regs->cp0_epc);
-	force_sig(SIGBUS, current);
-	while(1);
-}
-
-void do_dbe(struct pt_regs *regs)
-{
-	unsigned long fixup;
-
-	fixup = search_dbe_table(regs->cp0_epc);
-	if (fixup) {
-		long new_epc;
-
-		new_epc = fixup_exception(dpf_reg, fixup, regs->cp0_epc);
-		regs->cp0_epc = new_epc;
-		return;
-	}
-
-	printk("Got dbe at 0x%lx\n", regs->cp0_epc);
-	show_regs(regs);
-	dump_tlb_all();
-	while(1);
-	force_sig(SIGBUS, current);
-}
-
-void __init
-bus_error_init(void)
-{
-	int dummy;
-
-	set_except_vector(6, handle_ibe);
-	set_except_vector(7, handle_dbe);
-
-	/* At this time nothing uses the DBE protection mechanism on the
-	   Indy, so this here is needed to make the kernel link.  */
-	get_dbe(dummy, (int *)KSEG0);
-}