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 #include <linux/objtool.h>
   8
   9 #ifndef CONFIG_DEBUG_BUGVERBOSE
  10 #define _BUGVERBOSE_LOCATION(file, line)
  11 #else
  12 #define __BUGVERBOSE_LOCATION(file, line)                       \
  13                 .pushsection .rodata.str, "aMS", @progbits, 1;  \
  14         10002:  .string file;                                   \
  15                 .popsection;                                    \
  16                                                                 \
  17                 .long 10002b - .;                               \
  18                 .short line;
  19 #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
  20 #endif
  21
  22 #ifndef CONFIG_GENERIC_BUG
  23 #define __BUG_ENTRY(flags)
  24 #else
  25 #define __BUG_ENTRY(flags)                                      \
  26                 .pushsection __bug_table, "aw";                 \
  27                 .align 2;                                       \
  28         10000:  .long 10001f - .;                               \
  29                 _BUGVERBOSE_LOCATION(__FILE__, __LINE__)        \
  30                 .short flags;                                   \
  31                 .popsection;                                    \
  32         10001:
  33 #endif
  34
  35 #define ASM_BUG_FLAGS(flags)                                    \
  36         __BUG_ENTRY(flags)                                      \
  37         break           BRK_BUG;
  38
  39 #define ASM_BUG()       ASM_BUG_FLAGS(0)
  40
  41 #define __BUG_FLAGS(flags, extra)                                       \
  42         asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags))          \
  43                              extra);
  44
  45 #define __WARN_FLAGS(flags)                                     \
  46 do {                                                            \
  47         instrumentation_begin();                                \
  48         __BUG_FLAGS(BUGFLAG_WARNING|(flags), ANNOTATE_REACHABLE(10001b));\
  49         instrumentation_end();                                  \
  50 } while (0)
  51
  52 #define BUG()                                                   \
  53 do {                                                            \
  54         instrumentation_begin();                                \
  55         __BUG_FLAGS(0, "");                                     \
  56         unreachable();                                          \
  57 } while (0)
  58
  59 #define HAVE_ARCH_BUG
  60
  61 #include <asm-generic/bug.h>
  62
  63 #endif /* __ASM_BUG_H */