| 1 | /* |
| 2 | * arch/ubicom32/include/asm/bug.h |
| 3 | * Generic bug.h for Ubicom32 architecture. |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | * Ubicom32 implementation derived from (with many thanks): |
| 24 | * arch/m68knommu |
| 25 | * arch/blackfin |
| 26 | * arch/parisc |
| 27 | */ |
| 28 | #ifndef _ASM_UBICOM32_BUG_H |
| 29 | #define _ASM_UBICOM32_BUG_H |
| 30 | |
| 31 | #include <linux/kernel.h> |
| 32 | #include <asm/thread.h> |
| 33 | |
| 34 | #if defined(CONFIG_BUG) && defined(CONFIG_STOP_ON_BUG) |
| 35 | |
| 36 | /* |
| 37 | * BUG() |
| 38 | * Ubicom specific version of the BUG() macro. |
| 39 | * |
| 40 | * This implementation performs a THREAD_STALL stopping all threads before |
| 41 | * calling panic. This enables a developer to see the "real" state of the |
| 42 | * machine (since panic alters the system state). We do the printf first |
| 43 | * because while it is slow, it does not alter system state (like |
| 44 | * interrupts). |
| 45 | * |
| 46 | * TODO: Implement the trap sequence used by other architectures. |
| 47 | */ |
| 48 | #define BUG() do { \ |
| 49 | printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ |
| 50 | THREAD_STALL; \ |
| 51 | panic("BUG!"); \ |
| 52 | } while (0) |
| 53 | |
| 54 | |
| 55 | /* |
| 56 | * __WARN() |
| 57 | * WARN() using printk() for now. |
| 58 | * |
| 59 | * TODO: Implement the trap sequence used by other architectures. |
| 60 | */ |
| 61 | #define __WARN() \ |
| 62 | do { \ |
| 63 | printk("WARN: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ |
| 64 | } while(0) |
| 65 | |
| 66 | /* |
| 67 | * WARN_ON() |
| 68 | * Ubicom specific version of the WARN_ON macro. |
| 69 | * |
| 70 | * This implementation performs a printk for the WARN_ON() instead |
| 71 | * of faulting into the kernel and using report_bug(). |
| 72 | * |
| 73 | * TODO: Implement the trap sequence used by other architectures. |
| 74 | */ |
| 75 | #define WARN_ON(x) ({ \ |
| 76 | int __ret_warn_on = !!(x); \ |
| 77 | if (__builtin_constant_p(__ret_warn_on)) { \ |
| 78 | if (__ret_warn_on) \ |
| 79 | __WARN(); \ |
| 80 | } else { \ |
| 81 | if (unlikely(__ret_warn_on)) \ |
| 82 | __WARN(); \ |
| 83 | } \ |
| 84 | unlikely(__ret_warn_on); \ |
| 85 | }) |
| 86 | |
| 87 | |
| 88 | #define HAVE_ARCH_BUG |
| 89 | #define HAVE_ARCH_WARN_ON |
| 90 | |
| 91 | #endif |
| 92 | |
| 93 | #include <asm-generic/bug.h> |
| 94 | |
| 95 | #endif /* _ASM_UBICOM32_BUG_H */ |
| 96 | |
