arch/arm64/include/asm/asm-bug.h

   1 #ifndef __ASM_ASM_BUG_H
   2 /*
   3  * Copyright (C) 2017  ARM Limited
   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 #define __ASM_ASM_BUG_H
  18
  19 #include <asm/brk-imm.h>
  20
  21 #ifdef CONFIG_DEBUG_BUGVERBOSE
  22 #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
  23 #define __BUGVERBOSE_LOCATION(file, line)                       \
  24                 .pushsection .rodata.str,"aMS",@progbits,1;     \
  25         2:      .string file;                                   \
  26                 .popsection;                                    \
  27                                                                 \
  28                 .long 2b - 0b;                                  \
  29                 .short line;
  30 #else
  31 #define _BUGVERBOSE_LOCATION(file, line)
  32 #endif
  33
  34 #ifdef CONFIG_GENERIC_BUG
  35
  36 #define __BUG_ENTRY(flags)                              \
  37                 .pushsection __bug_table,"aw";          \
  38                 .align 2;                               \
  39         0:      .long 1f - 0b;                          \
  40 _BUGVERBOSE_LOCATION(__FILE__, __LINE__)                \
  41                 .short flags;                           \
  42                 .popsection;                            \
  43         1:
  44 #else
  45 #define __BUG_ENTRY(flags)
  46 #endif
  47
  48 #define ASM_BUG_FLAGS(flags)                            \
  49         __BUG_ENTRY(flags)                              \
  50         brk     BUG_BRK_IMM
  51
  52 #define ASM_BUG()       ASM_BUG_FLAGS(0)
  53
  54 #endif /* __ASM_ASM_BUG_H */