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_GENERIC_BUG 24 #define HAVE_ARCH_BUG 25 26 #ifdef CONFIG_DEBUG_BUGVERBOSE 27 #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line) 28 #define __BUGVERBOSE_LOCATION(file, line) \ 29 ".pushsection .rodata.str,\"aMS\",@progbits,1\n" \ 30 "2: .string \"" file "\"\n\t" \ 31 ".popsection\n\t" \ 32 \ 33 ".long 2b - 0b\n\t" \ 34 ".short " #line "\n\t" 35 #else 36 #define _BUGVERBOSE_LOCATION(file, line) 37 #endif 38 39 #define _BUG_FLAGS(flags) __BUG_FLAGS(flags) 40 41 #define __BUG_FLAGS(flags) asm volatile ( \ 42 ".pushsection __bug_table,\"a\"\n\t" \ 43 ".align 2\n\t" \ 44 "0: .long 1f - 0b\n\t" \ 45 _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \ 46 ".short " #flags "\n\t" \ 47 ".popsection\n" \ 48 \ 49 "1: brk %[imm]" \ 50 :: [imm] "i" (BUG_BRK_IMM) \ 51 ) 52 53 #define BUG() do { \ 54 _BUG_FLAGS(0); \ 55 unreachable(); \ 56 } while (0) 57 58 #define __WARN_TAINT(taint) _BUG_FLAGS(BUGFLAG_TAINT(taint)) 59 60 #endif /* ! CONFIG_GENERIC_BUG */ 61 62 #include <asm-generic/bug.h> 63 64 #endif /* ! _ARCH_ARM64_ASM_BUG_H */ 65