| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _PARISC_BUG_H |
| 3 | #define _PARISC_BUG_H |
| 4 | |
| 5 | #include <linux/kernel.h> /* for BUGFLAG_TAINT */ |
| 6 | |
| 7 | /* |
| 8 | * Tell the user there is some problem. |
| 9 | * The offending file and line are encoded in the __bug_table section. |
| 10 | */ |
| 11 | |
| 12 | #ifdef CONFIG_BUG |
| 13 | #define HAVE_ARCH_BUG |
| 14 | #define HAVE_ARCH_WARN_ON |
| 15 | |
| 16 | /* the break instruction is used as BUG() marker. */ |
| 17 | #define PARISC_BUG_BREAK_ASM "break 0x1f, 0x1fff" |
| 18 | #define PARISC_BUG_BREAK_INSN 0x03ffe01f /* PARISC_BUG_BREAK_ASM */ |
| 19 | |
| 20 | #if defined(CONFIG_64BIT) |
| 21 | #define ASM_WORD_INSN ".dword\t" |
| 22 | #else |
| 23 | #define ASM_WORD_INSN ".word\t" |
| 24 | #endif |
| 25 | |
| 26 | #ifdef CONFIG_DEBUG_BUGVERBOSE |
| 27 | #define BUG() \ |
| 28 | do { \ |
| 29 | asm volatile("\n" \ |
| 30 | "1:\t" PARISC_BUG_BREAK_ASM "\n" \ |
| 31 | "\t.pushsection __bug_table,\"aw\"\n" \ |
| 32 | "2:\t" ASM_WORD_INSN "1b, %c0\n" \ |
| 33 | "\t.short %c1, %c2\n" \ |
| 34 | "\t.org 2b+%c3\n" \ |
| 35 | "\t.popsection" \ |
| 36 | : : "i" (__FILE__), "i" (__LINE__), \ |
| 37 | "i" (0), "i" (sizeof(struct bug_entry)) ); \ |
| 38 | unreachable(); \ |
| 39 | } while(0) |
| 40 | |
| 41 | #else |
| 42 | #define BUG() \ |
| 43 | do { \ |
| 44 | asm volatile(PARISC_BUG_BREAK_ASM : : ); \ |
| 45 | unreachable(); \ |
| 46 | } while(0) |
| 47 | #endif |
| 48 | |
| 49 | #ifdef CONFIG_DEBUG_BUGVERBOSE |
| 50 | #define __WARN_FLAGS(flags) \ |
| 51 | do { \ |
| 52 | asm volatile("\n" \ |
| 53 | "1:\t" PARISC_BUG_BREAK_ASM "\n" \ |
| 54 | "\t.pushsection __bug_table,\"aw\"\n" \ |
| 55 | "2:\t" ASM_WORD_INSN "1b, %c0\n" \ |
| 56 | "\t.short %c1, %c2\n" \ |
| 57 | "\t.org 2b+%c3\n" \ |
| 58 | "\t.popsection" \ |
| 59 | : : "i" (__FILE__), "i" (__LINE__), \ |
| 60 | "i" (BUGFLAG_WARNING|(flags)), \ |
| 61 | "i" (sizeof(struct bug_entry)) ); \ |
| 62 | } while(0) |
| 63 | #else |
| 64 | #define __WARN_FLAGS(flags) \ |
| 65 | do { \ |
| 66 | asm volatile("\n" \ |
| 67 | "1:\t" PARISC_BUG_BREAK_ASM "\n" \ |
| 68 | "\t.pushsection __bug_table,\"aw\"\n" \ |
| 69 | "2:\t" ASM_WORD_INSN "1b\n" \ |
| 70 | "\t.short %c0\n" \ |
| 71 | "\t.org 2b+%c1\n" \ |
| 72 | "\t.popsection" \ |
| 73 | : : "i" (BUGFLAG_WARNING|(flags)), \ |
| 74 | "i" (sizeof(struct bug_entry)) ); \ |
| 75 | } while(0) |
| 76 | #endif |
| 77 | |
| 78 | |
| 79 | #define WARN_ON(x) ({ \ |
| 80 | int __ret_warn_on = !!(x); \ |
| 81 | if (__builtin_constant_p(__ret_warn_on)) { \ |
| 82 | if (__ret_warn_on) \ |
| 83 | __WARN(); \ |
| 84 | } else { \ |
| 85 | if (unlikely(__ret_warn_on)) \ |
| 86 | __WARN(); \ |
| 87 | } \ |
| 88 | unlikely(__ret_warn_on); \ |
| 89 | }) |
| 90 | |
| 91 | #endif |
| 92 | |
| 93 | #include <asm-generic/bug.h> |
| 94 | #endif |
| 95 | |