diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/microblaze/kernel/exceptions.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/microblaze/kernel/exceptions.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/ANDROID_3.4.5/arch/microblaze/kernel/exceptions.c b/ANDROID_3.4.5/arch/microblaze/kernel/exceptions.c deleted file mode 100644 index 6348dc82..00000000 --- a/ANDROID_3.4.5/arch/microblaze/kernel/exceptions.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * HW exception handling - * - * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> - * Copyright (C) 2008 PetaLogix - * - * 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. - */ - -/* - * This file handles the architecture-dependent parts of hardware exceptions - */ - -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/kallsyms.h> -#include <linux/module.h> - -#include <asm/exceptions.h> -#include <asm/entry.h> /* For KM CPU var */ -#include <linux/uaccess.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <asm/current.h> -#include <asm/cacheflush.h> - -#define MICROBLAZE_ILL_OPCODE_EXCEPTION 0x02 -#define MICROBLAZE_IBUS_EXCEPTION 0x03 -#define MICROBLAZE_DBUS_EXCEPTION 0x04 -#define MICROBLAZE_DIV_ZERO_EXCEPTION 0x05 -#define MICROBLAZE_FPU_EXCEPTION 0x06 -#define MICROBLAZE_PRIVILEGED_EXCEPTION 0x07 - -static DEFINE_SPINLOCK(die_lock); - -void die(const char *str, struct pt_regs *fp, long err) -{ - console_verbose(); - spin_lock_irq(&die_lock); - printk(KERN_WARNING "Oops: %s, sig: %ld\n", str, err); - show_regs(fp); - spin_unlock_irq(&die_lock); - /* do_exit() should take care of panic'ing from an interrupt - * context so we don't handle it here - */ - do_exit(err); -} - -/* for user application debugging */ -asmlinkage void sw_exception(struct pt_regs *regs) -{ - _exception(SIGTRAP, regs, TRAP_BRKPT, regs->r16); - flush_dcache_range(regs->r16, regs->r16 + 0x4); - flush_icache_range(regs->r16, regs->r16 + 0x4); -} - -void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) -{ - siginfo_t info; - - if (kernel_mode(regs)) { - die("Exception in kernel mode", regs, signr); - } - info.si_signo = signr; - info.si_errno = 0; - info.si_code = code; - info.si_addr = (void __user *) addr; - force_sig_info(signr, &info, current); -} - -asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, - int fsr, int addr) -{ -#ifdef CONFIG_MMU - addr = regs->pc; -#endif - -#if 0 - printk(KERN_WARNING "Exception %02x in %s mode, FSR=%08x PC=%08x " \ - "ESR=%08x\n", - type, user_mode(regs) ? "user" : "kernel", fsr, - (unsigned int) regs->pc, (unsigned int) regs->esr); -#endif - - switch (type & 0x1F) { - case MICROBLAZE_ILL_OPCODE_EXCEPTION: - if (user_mode(regs)) { - pr_debug("Illegal opcode exception in user mode\n"); - _exception(SIGILL, regs, ILL_ILLOPC, addr); - return; - } - printk(KERN_WARNING "Illegal opcode exception " \ - "in kernel mode.\n"); - die("opcode exception", regs, SIGBUS); - break; - case MICROBLAZE_IBUS_EXCEPTION: - if (user_mode(regs)) { - pr_debug("Instruction bus error exception in user mode\n"); - _exception(SIGBUS, regs, BUS_ADRERR, addr); - return; - } - printk(KERN_WARNING "Instruction bus error exception " \ - "in kernel mode.\n"); - die("bus exception", regs, SIGBUS); - break; - case MICROBLAZE_DBUS_EXCEPTION: - if (user_mode(regs)) { - pr_debug("Data bus error exception in user mode\n"); - _exception(SIGBUS, regs, BUS_ADRERR, addr); - return; - } - printk(KERN_WARNING "Data bus error exception " \ - "in kernel mode.\n"); - die("bus exception", regs, SIGBUS); - break; - case MICROBLAZE_DIV_ZERO_EXCEPTION: - if (user_mode(regs)) { - pr_debug("Divide by zero exception in user mode\n"); - _exception(SIGFPE, regs, FPE_INTDIV, addr); - return; - } - printk(KERN_WARNING "Divide by zero exception " \ - "in kernel mode.\n"); - die("Divide by zero exception", regs, SIGBUS); - break; - case MICROBLAZE_FPU_EXCEPTION: - pr_debug("FPU exception\n"); - /* IEEE FP exception */ - /* I removed fsr variable and use code var for storing fsr */ - if (fsr & FSR_IO) - fsr = FPE_FLTINV; - else if (fsr & FSR_OF) - fsr = FPE_FLTOVF; - else if (fsr & FSR_UF) - fsr = FPE_FLTUND; - else if (fsr & FSR_DZ) - fsr = FPE_FLTDIV; - else if (fsr & FSR_DO) - fsr = FPE_FLTRES; - _exception(SIGFPE, regs, fsr, addr); - break; - -#ifdef CONFIG_MMU - case MICROBLAZE_PRIVILEGED_EXCEPTION: - pr_debug("Privileged exception\n"); - _exception(SIGILL, regs, ILL_PRVOPC, addr); - break; -#endif - default: - /* FIXME what to do in unexpected exception */ - printk(KERN_WARNING "Unexpected exception %02x " - "PC=%08x in %s mode\n", type, (unsigned int) addr, - kernel_mode(regs) ? "kernel" : "user"); - } - return; -} |