diff options
Diffstat (limited to 'arch/cris/arch-v10/kernel/traps.c')
| -rw-r--r-- | arch/cris/arch-v10/kernel/traps.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/arch/cris/arch-v10/kernel/traps.c b/arch/cris/arch-v10/kernel/traps.c deleted file mode 100644 index 876d45b957f4..000000000000 --- a/arch/cris/arch-v10/kernel/traps.c +++ /dev/null @@ -1,134 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Helper functions for trap handlers - * - * Copyright (C) 2000-2007, Axis Communications AB. - * - * Authors: Bjorn Wesen - * Hans-Peter Nilsson - * - */ - -#include <linux/ptrace.h> -#include <linux/uaccess.h> -#include <linux/sched/debug.h> - -#include <arch/sv_addr_ag.h> -#include <arch/system.h> - -void -show_registers(struct pt_regs *regs) -{ - /* - * It's possible to use either the USP register or current->thread.usp. - * USP might not correspond to the current process for all cases this - * function is called, and current->thread.usp isn't up to date for the - * current process. Experience shows that using USP is the way to go. - */ - unsigned long usp = rdusp(); - - printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n", - regs->irp, regs->srp, regs->dccr, usp, regs->mof); - - printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n", - regs->r0, regs->r1, regs->r2, regs->r3); - - printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n", - regs->r4, regs->r5, regs->r6, regs->r7); - - printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n", - regs->r8, regs->r9, regs->r10, regs->r11); - - printk("r12: %08lx r13: %08lx oR10: %08lx sp: %08lx\n", - regs->r12, regs->r13, regs->orig_r10, (long unsigned)regs); - - printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE); - - printk("Process %s (pid: %d, stackpage=%08lx)\n", - current->comm, current->pid, (unsigned long)current); - - /* - * When in-kernel, we also print out the stack and code at the - * time of the fault.. - */ - if (!user_mode(regs)) { - int i; - - show_stack(NULL, (unsigned long *)usp); - - /* - * If the previous stack-dump wasn't a kernel one, dump the - * kernel stack now. - */ - if (usp != 0) - show_stack(NULL, NULL); - - printk("\nCode: "); - - if (regs->irp < PAGE_OFFSET) - goto bad_value; - - /* - * Quite often the value at regs->irp doesn't point to the - * interesting instruction, which often is the previous - * instruction. So dump at an offset large enough that the - * instruction decoding should be in sync at the interesting - * point, but small enough to fit on a row. The regs->irp - * location is pointed out in a ksymoops-friendly way by - * wrapping the byte for that address in parenthesises. - */ - for (i = -12; i < 12; i++) { - unsigned char c; - - if (__get_user(c, &((unsigned char *)regs->irp)[i])) { -bad_value: - printk(" Bad IP value."); - break; - } - - if (i == 0) - printk("(%02x) ", c); - else - printk("%02x ", c); - } - printk("\n"); - } -} - -void -arch_enable_nmi(void) -{ - asm volatile ("setf m"); -} - -extern void (*nmi_handler)(struct pt_regs *); -void handle_nmi(struct pt_regs *regs) -{ - if (nmi_handler) - nmi_handler(regs); - - /* Wait until nmi is no longer active. (We enable NMI immediately after - returning from this function, and we don't want it happening while - exiting from the NMI interrupt handler.) */ - while (*R_IRQ_MASK0_RD & IO_STATE(R_IRQ_MASK0_RD, nmi_pin, active)) - ; -} - -#ifdef CONFIG_DEBUG_BUGVERBOSE -void -handle_BUG(struct pt_regs *regs) -{ - struct bug_frame f; - unsigned char c; - unsigned long irp = regs->irp; - - if (__copy_from_user(&f, (const void __user *)(irp - 8), sizeof f)) - return; - if (f.prefix != BUG_PREFIX || f.magic != BUG_MAGIC) - return; - if (__get_user(c, f.filename)) - f.filename = "<bad filename>"; - - printk("kernel BUG at %s:%d!\n", f.filename, f.line); -} -#endif |