| Palmer Dabbelt | 76d2a04 | 2017-07-10 18:00:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Regents of the University of California |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation, version 2. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #ifndef _ASM_RISCV_BUG_H |
| 15 | #define _ASM_RISCV_BUG_H |
| 16 | |
| 17 | #include <linux/compiler.h> |
| 18 | #include <linux/const.h> |
| 19 | #include <linux/types.h> |
| 20 | |
| 21 | #include <asm/asm.h> |
| 22 | |
| 23 | #ifdef CONFIG_GENERIC_BUG |
| 24 | #define __BUG_INSN _AC(0x00100073, UL) /* ebreak */ |
| 25 | |
| 26 | #ifndef __ASSEMBLY__ |
| 27 | typedef u32 bug_insn_t; |
| 28 | |
| 29 | #ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS |
| 30 | #define __BUG_ENTRY_ADDR INT " 1b - 2b" |
| 31 | #define __BUG_ENTRY_FILE INT " %0 - 2b" |
| 32 | #else |
| 33 | #define __BUG_ENTRY_ADDR RISCV_PTR " 1b" |
| 34 | #define __BUG_ENTRY_FILE RISCV_PTR " %0" |
| 35 | #endif |
| 36 | |
| 37 | #ifdef CONFIG_DEBUG_BUGVERBOSE |
| 38 | #define __BUG_ENTRY \ |
| 39 | __BUG_ENTRY_ADDR "\n\t" \ |
| 40 | __BUG_ENTRY_FILE "\n\t" \ |
| 41 | SHORT " %1" |
| 42 | #else |
| 43 | #define __BUG_ENTRY \ |
| 44 | __BUG_ENTRY_ADDR |
| 45 | #endif |
| 46 | |
| 47 | #define BUG() \ |
| 48 | do { \ |
| 49 | __asm__ __volatile__ ( \ |
| 50 | "1:\n\t" \ |
| 51 | "ebreak\n" \ |
| 52 | ".pushsection __bug_table,\"a\"\n\t" \ |
| 53 | "2:\n\t" \ |
| 54 | __BUG_ENTRY "\n\t" \ |
| 55 | ".org 2b + %2\n\t" \ |
| 56 | ".popsection" \ |
| 57 | : \ |
| 58 | : "i" (__FILE__), "i" (__LINE__), \ |
| 59 | "i" (sizeof(struct bug_entry))); \ |
| 60 | unreachable(); \ |
| 61 | } while (0) |
| 62 | #endif /* !__ASSEMBLY__ */ |
| 63 | #else /* CONFIG_GENERIC_BUG */ |
| 64 | #ifndef __ASSEMBLY__ |
| 65 | #define BUG() \ |
| 66 | do { \ |
| 67 | __asm__ __volatile__ ("ebreak\n"); \ |
| 68 | unreachable(); \ |
| 69 | } while (0) |
| 70 | #endif /* !__ASSEMBLY__ */ |
| 71 | #endif /* CONFIG_GENERIC_BUG */ |
| 72 | |
| 73 | #define HAVE_ARCH_BUG |
| 74 | |
| 75 | #include <asm-generic/bug.h> |
| 76 | |
| 77 | #ifndef __ASSEMBLY__ |
| 78 | |
| 79 | struct pt_regs; |
| 80 | struct task_struct; |
| 81 | |
| 82 | extern void die(struct pt_regs *regs, const char *str); |
| 83 | extern void do_trap(struct pt_regs *regs, int signo, int code, |
| 84 | unsigned long addr, struct task_struct *tsk); |
| 85 | |
| 86 | #endif /* !__ASSEMBLY__ */ |
| 87 | |
| 88 | #endif /* _ASM_RISCV_BUG_H */ |