Release 4.11 arch/arm64/include/asm/bug.h

/*
 * Copyright (C) 2015  ARM Limited
 * Author: Dave Martin <Dave.Martin@arm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _ARCH_ARM64_ASM_BUG_H

#define _ARCH_ARM64_ASM_BUG_H

#include <asm/brk-imm.h>

#ifdef CONFIG_GENERIC_BUG

#define HAVE_ARCH_BUG

#ifdef CONFIG_DEBUG_BUGVERBOSE

#define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)

#define __BUGVERBOSE_LOCATION(file, line)				\
		".pushsection .rodata.str,\"aMS\",@progbits,1\n"        \
        "2:     .string \"" file "\"\n\t"                               \
                ".popsection\n\t"                                       \
                                                                        \
                ".long 2b - 0b\n\t"                                     \
                ".short " #line "\n\t"
#else

#define _BUGVERBOSE_LOCATION(file, line)
#endif


#define _BUG_FLAGS(flags) __BUG_FLAGS(flags)


#define __BUG_FLAGS(flags) asm volatile (          \
                ".pushsection __bug_table,\"a\"\n\t"    \
                ".align 2\n\t"                          \
        "0:     .long 1f - 0b\n\t"                      \
_BUGVERBOSE_LOCATION(__FILE__, __LINE__)                \
                ".short " #flags "\n\t"                 \
                ".popsection\n"                         \
                                                        \
        "1:     brk %[imm]"                             \
                :: [imm] "i" (BUG_BRK_IMM)              \
)


#define BUG() do {                            \
        _BUG_FLAGS(0);                          \
        unreachable();                          \
} while (0)


#define __WARN_TAINT(taint) _BUG_FLAGS(BUGFLAG_TAINT(taint))

#endif /* ! CONFIG_GENERIC_BUG */

#include <asm-generic/bug.h>

#endif /* ! _ARCH_ARM64_ASM_BUG_H */
Overall Contributors
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Dave P Martin
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Ard Biesheuvel
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Total
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2
100.00%
Directory: arch/arm64/include/asm

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