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/debug-monitors.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