diff options
Diffstat (limited to 'arch/cris/kernel/traps.c')
| -rw-r--r-- | arch/cris/kernel/traps.c | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/arch/cris/kernel/traps.c b/arch/cris/kernel/traps.c deleted file mode 100644 index 0ffda73734f5..000000000000 --- a/arch/cris/kernel/traps.c +++ /dev/null @@ -1,232 +0,0 @@ -/* - * linux/arch/cris/traps.c - * - * Here we handle the break vectors not used by the system call - * mechanism, as well as some general stack/register dumping - * things. - * - * Copyright (C) 2000-2007 Axis Communications AB - * - * Authors: Bjorn Wesen - * Hans-Peter Nilsson - * - */ - -#include <linux/init.h> -#include <linux/module.h> - -#include <asm/pgtable.h> -#include <asm/uaccess.h> -#include <arch/system.h> - -extern void arch_enable_nmi(void); -extern void stop_watchdog(void); -extern void reset_watchdog(void); -extern void show_registers(struct pt_regs *regs); - -#ifdef CONFIG_DEBUG_BUGVERBOSE -extern void handle_BUG(struct pt_regs *regs); -#else -#define handle_BUG(regs) -#endif - -static int kstack_depth_to_print = 24; - -void (*nmi_handler)(struct pt_regs *); - -void -show_trace(unsigned long *stack) -{ - unsigned long addr, module_start, module_end; - extern char _stext, _etext; - int i; - - printk("\nCall Trace: "); - - i = 1; - module_start = VMALLOC_START; - module_end = VMALLOC_END; - - while (((long)stack & (THREAD_SIZE-1)) != 0) { - if (__get_user(addr, stack)) { - /* This message matches "failing address" marked - s390 in ksymoops, so lines containing it will - not be filtered out by ksymoops. */ - printk("Failing address 0x%lx\n", (unsigned long)stack); - break; - } - stack++; - - /* - * If the address is either in the text segment of the - * kernel, or in the region which contains vmalloc'ed - * memory, it *may* be the address of a calling - * routine; if so, print it so that someone tracing - * down the cause of the crash will be able to figure - * out the call path that was taken. - */ - if (((addr >= (unsigned long)&_stext) && - (addr <= (unsigned long)&_etext)) || - ((addr >= module_start) && (addr <= module_end))) { - if (i && ((i % 8) == 0)) - printk("\n "); - printk("[<%08lx>] ", addr); - i++; - } - } -} - -/* - * These constants are for searching for possible module text - * segments. MODULE_RANGE is a guess of how much space is likely - * to be vmalloced. - */ - -#define MODULE_RANGE (8*1024*1024) - -/* - * The output (format, strings and order) is adjusted to be usable with - * ksymoops-2.4.1 with some necessary CRIS-specific patches. Please don't - * change it unless you're serious about adjusting ksymoops and syncing - * with the ksymoops maintainer. - */ - -void -show_stack(struct task_struct *task, unsigned long *sp) -{ - unsigned long *stack, addr; - int i; - - /* - * debugging aid: "show_stack(NULL);" prints a - * back trace. - */ - - if (sp == NULL) { - if (task) - sp = (unsigned long*)task->thread.ksp; - else - sp = (unsigned long*)rdsp(); - } - - stack = sp; - - printk("\nStack from %08lx:\n ", (unsigned long)stack); - for (i = 0; i < kstack_depth_to_print; i++) { - if (((long)stack & (THREAD_SIZE-1)) == 0) - break; - if (i && ((i % 8) == 0)) - printk("\n "); - if (__get_user(addr, stack)) { - /* This message matches "failing address" marked - s390 in ksymoops, so lines containing it will - not be filtered out by ksymoops. */ - printk("Failing address 0x%lx\n", (unsigned long)stack); - break; - } - stack++; - printk("%08lx ", addr); - } - show_trace(sp); -} - -#if 0 -/* displays a short stack trace */ - -int -show_stack(void) -{ - unsigned long *sp = (unsigned long *)rdusp(); - int i; - - printk("Stack dump [0x%08lx]:\n", (unsigned long)sp); - for (i = 0; i < 16; i++) - printk("sp + %d: 0x%08lx\n", i*4, sp[i]); - return 0; -} -#endif - -void -set_nmi_handler(void (*handler)(struct pt_regs *)) -{ - nmi_handler = handler; - arch_enable_nmi(); -} - -#ifdef CONFIG_DEBUG_NMI_OOPS -void -oops_nmi_handler(struct pt_regs *regs) -{ - stop_watchdog(); - oops_in_progress = 1; - printk("NMI!\n"); - show_registers(regs); - oops_in_progress = 0; -} - -static int __init -oops_nmi_register(void) -{ - set_nmi_handler(oops_nmi_handler); - return 0; -} - -__initcall(oops_nmi_register); - -#endif - -/* - * This gets called from entry.S when the watchdog has bitten. Show something - * similar to an Oops dump, and if the kernel is configured to be a nice - * doggy, then halt instead of reboot. - */ -void -watchdog_bite_hook(struct pt_regs *regs) -{ -#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY - local_irq_disable(); - stop_watchdog(); - show_registers(regs); - - while (1) - ; /* Do nothing. */ -#else - show_registers(regs); -#endif -} - -/* This is normally the Oops function. */ -void -die_if_kernel(const char *str, struct pt_regs *regs, long err) -{ - if (user_mode(regs)) - return; - -#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY - /* - * This printout might take too long and could trigger - * the watchdog normally. If NICE_DOGGY is set, simply - * stop the watchdog during the printout. - */ - stop_watchdog(); -#endif - - handle_BUG(regs); - - printk("%s: %04lx\n", str, err & 0xffff); - - show_registers(regs); - - oops_in_progress = 0; - -#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY - reset_watchdog(); -#endif - do_exit(SIGSEGV); -} - -void __init -trap_init(void) -{ - /* Nothing needs to be done */ -} |