diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/include/asm/bug.h')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/include/asm/bug.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/include/asm/bug.h b/target/linux/ubicom32/files/arch/ubicom32/include/asm/bug.h new file mode 100644 index 000000000..b6a000dac --- /dev/null +++ b/target/linux/ubicom32/files/arch/ubicom32/include/asm/bug.h @@ -0,0 +1,95 @@ +/* + * arch/ubicom32/include/asm/bug.h + * Generic bug.h for Ubicom32 architecture. + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port is free software: you can redistribute + * it and/or modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, either version 2 of the + * License, or (at your option) any later version. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see <http://www.gnu.org/licenses/>. + * + * Ubicom32 implementation derived from (with many thanks): + * arch/m68knommu + * arch/blackfin + * arch/parisc + */ +#ifndef _ASM_UBICOM32_BUG_H +#define _ASM_UBICOM32_BUG_H + +#include <linux/kernel.h> +#include <asm/thread.h> + +#if defined(CONFIG_BUG) && defined(CONFIG_STOP_ON_BUG) + +/* + * BUG() + * Ubicom specific version of the BUG() macro. + * + * This implementation performs a THREAD_STALL stopping all threads before + * calling panic. This enables a developer to see the "real" state of the + * machine (since panic alters the system state). We do the printf first + * because while it is slow, it does not alter system state (like + * interrupts). + * + * TODO: Implement the trap sequence used by other architectures. + */ +#define BUG() do { \ + printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ + THREAD_STALL; \ + panic("BUG!"); \ +} while (0) + + +/* + * __WARN() + * WARN() using printk() for now. + * + * TODO: Implement the trap sequence used by other architectures. + */ +#define __WARN() \ + do { \ + printk("WARN: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ + } while(0) + +/* + * WARN_ON() + * Ubicom specific version of the WARN_ON macro. + * + * This implementation performs a printk for the WARN_ON() instead + * of faulting into the kernel and using report_bug(). + * + * TODO: Implement the trap sequence used by other architectures. + */ +#define WARN_ON(x) ({ \ + int __ret_warn_on = !!(x); \ + if (__builtin_constant_p(__ret_warn_on)) { \ + if (__ret_warn_on) \ + __WARN(); \ + } else { \ + if (unlikely(__ret_warn_on)) \ + __WARN(); \ + } \ + unlikely(__ret_warn_on); \ +}) + + +#define HAVE_ARCH_BUG +#define HAVE_ARCH_WARN_ON + +#endif + +#include <asm-generic/bug.h> + +#endif /* _ASM_UBICOM32_BUG_H */ |