arch/loongarch/include/asm/bug.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_BUG_H
   3 #define __ASM_BUG_H
   4
   5 #include <asm/break.h>
   6 #include <linux/stringify.h>
   7
   8 #ifndef CONFIG_DEBUG_BUGVERBOSE
   9 #define _BUGVERBOSE_LOCATION(file, line)
  10 #else
  11 #define __BUGVERBOSE_LOCATION(file, line)                       \
  12                 .pushsection .rodata.str, "aMS", @progbits, 1;  \
  13         10002:  .string file;                                   \
  14                 .popsection;                                    \
  15                                                                 \
  16                 .long 10002b - .;                               \
  17                 .short line;
  18 #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
  19 #endif
  20
  21 #ifndef CONFIG_GENERIC_BUG
  22 #define __BUG_ENTRY(flags)
  23 #else
  24 #define __BUG_ENTRY(flags)                                      \
  25                 .pushsection __bug_table, "aw";                 \
  26                 .align 2;                                       \
  27         10000:  .long 10001f - .;                               \
  28                 _BUGVERBOSE_LOCATION(__FILE__, __LINE__)        \
  29                 .short flags;                                   \
  30                 .popsection;                                    \
  31         10001:
  32 #endif
  33
  34 #define ASM_BUG_FLAGS(flags)                                    \
  35         __BUG_ENTRY(flags)                                      \
  36         break           BRK_BUG
  37
  38 #define ASM_BUG()       ASM_BUG_FLAGS(0)
  39
  40 #define __BUG_FLAGS(flags)                                      \
  41         asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags)));
  42
  43 #define __WARN_FLAGS(flags)                                     \
  44 do {                                                            \
  45         instrumentation_begin();                                \
  46         __BUG_FLAGS(BUGFLAG_WARNING|(flags));                   \
  47         instrumentation_end();                                  \
  48 } while (0)
  49
  50 #define BUG()                                                   \
  51 do {                                                            \
  52         instrumentation_begin();                                \
  53         __BUG_FLAGS(0);                                         \
  54         unreachable();                                          \
  55 } while (0)
  56
  57 #define HAVE_ARCH_BUG
  58
  59 #include <asm-generic/bug.h>
  60
  61 #endif /* __ASM_BUG_H */