1 /* 2 * Copyright (C) 2015 ARM Limited 3 * Author: Dave Martin <Dave.Martin@arm.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef _ARCH_ARM64_ASM_BUG_H 19 #define _ARCH_ARM64_ASM_BUG_H 20 21 #include <asm/brk-imm.h> 22 23 #ifdef CONFIG_DEBUG_BUGVERBOSE 24 #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line) 25 #define __BUGVERBOSE_LOCATION(file, line) \ 26 ".pushsection .rodata.str,\"aMS\",@progbits,1\n" \ 27 "2: .string \"" file "\"\n\t" \ 28 ".popsection\n\t" \ 29 \ 30 ".long 2b - 0b\n\t" \ 31 ".short " #line "\n\t" 32 #else 33 #define _BUGVERBOSE_LOCATION(file, line) 34 #endif 35 36 #ifdef CONFIG_GENERIC_BUG 37 38 #define __BUG_ENTRY(flags) \ 39 ".pushsection __bug_table,\"aw\"\n\t" \ 40 ".align 2\n\t" \ 41 "0: .long 1f - 0b\n\t" \ 42 _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \ 43 ".short " #flags "\n\t" \ 44 ".popsection\n" \ 45 "1: " 46 #else 47 #define __BUG_ENTRY(flags) "" 48 #endif 49 50 #define __BUG_FLAGS(flags) \ 51 asm volatile ( \ 52 __BUG_ENTRY(flags) \ 53 "brk %[imm]" :: [imm] "i" (BUG_BRK_IMM) \ 54 ); 55 56 57 #define BUG() do { \ 58 __BUG_FLAGS(0); \ 59 unreachable(); \ 60 } while (0) 61 62 #define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags)) 63 64 #define HAVE_ARCH_BUG 65 66 #include <asm-generic/bug.h> 67 68 #endif /* ! _ARCH_ARM64_ASM_BUG_H */ 69