diff options
Diffstat (limited to 'arch/cris/arch-v32/kernel/traps.c')
| -rw-r--r-- | arch/cris/arch-v32/kernel/traps.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/arch/cris/arch-v32/kernel/traps.c b/arch/cris/arch-v32/kernel/traps.c deleted file mode 100644 index ba54c7eccbaa..000000000000 --- a/arch/cris/arch-v32/kernel/traps.c +++ /dev/null @@ -1,196 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2003-2006, Axis Communications AB. - */ - -#include <linux/ptrace.h> -#include <linux/extable.h> -#include <linux/uaccess.h> -#include <linux/sched/debug.h> - -#include <hwregs/supp_reg.h> -#include <hwregs/intr_vect_defs.h> -#include <asm/irq.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(); - unsigned long d_mmu_cause; - unsigned long i_mmu_cause; - - printk("CPU: %d\n", smp_processor_id()); - - printk("ERP: %08lx SRP: %08lx CCS: %08lx USP: %08lx MOF: %08lx\n", - regs->erp, regs->srp, regs->ccs, 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 acr: %08lx\n", - regs->r12, regs->r13, regs->orig_r10, regs->acr); - - printk(" sp: %08lx\n", (unsigned long)regs); - - SUPP_BANK_SEL(BANK_IM); - SUPP_REG_RD(RW_MM_CAUSE, i_mmu_cause); - - SUPP_BANK_SEL(BANK_DM); - SUPP_REG_RD(RW_MM_CAUSE, d_mmu_cause); - - printk(" Data MMU Cause: %08lx\n", d_mmu_cause); - printk("Instruction MMU Cause: %08lx\n", i_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->erp < PAGE_OFFSET) - goto bad_value; - - /* - * Quite often the value at regs->erp 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->erp - * 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->erp)[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) -{ - unsigned long flags; - - local_save_flags(flags); - flags |= (1 << 30); /* NMI M flag is at bit 30 */ - local_irq_restore(flags); -} - -extern void (*nmi_handler)(struct pt_regs *); -void handle_nmi(struct pt_regs *regs) -{ -#ifdef CONFIG_ETRAXFS - reg_intr_vect_r_nmi r; -#endif - - if (nmi_handler) - nmi_handler(regs); - -#ifdef CONFIG_ETRAXFS - /* Wait until nmi is no longer active. */ - do { - r = REG_RD(intr_vect, regi_irq, r_nmi); - } while (r.ext == regk_intr_vect_on); -#endif -} - - -#ifdef CONFIG_BUG -extern void die_if_kernel(const char *str, struct pt_regs *regs, long err); - -/* Copy of the regs at BUG() time. */ -struct pt_regs BUG_regs; - -void do_BUG(char *file, unsigned int line) -{ - printk("kernel BUG at %s:%d!\n", file, line); - die_if_kernel("Oops", &BUG_regs, 0); -} -EXPORT_SYMBOL(do_BUG); - -void fixup_BUG(struct pt_regs *regs) -{ - BUG_regs = *regs; - -#ifdef CONFIG_DEBUG_BUGVERBOSE - /* - * Fixup the BUG arguments through exception handlers. - */ - { - const struct exception_table_entry *fixup; - - /* - * ERP points at the "break 14" + 2, compensate for the 2 - * bytes. - */ - fixup = search_exception_tables(instruction_pointer(regs) - 2); - if (fixup) { - /* Adjust the instruction pointer in the stackframe. */ - instruction_pointer(regs) = fixup->fixup; - arch_fixup(regs); - } - } -#else - /* Dont try to lookup the filename + line, just dump regs. */ - do_BUG("unknown", 0); -#endif -} - -/* - * Break 14 handler. Save regs and jump into the fixup_BUG. - */ -__asm__ ( ".text\n\t" - ".global breakh_BUG\n\t" - "breakh_BUG:\n\t" - SAVE_ALL - KGDB_FIXUP - "move.d $sp, $r10\n\t" - "jsr fixup_BUG\n\t" - "nop\n\t" - "jump ret_from_intr\n\t" - "nop\n\t"); - - -#ifdef CONFIG_DEBUG_BUGVERBOSE -void -handle_BUG(struct pt_regs *regs) -{ -} -#endif -#endif |