bug.h 1.7 KB

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  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. #ifndef _ARCH_ARM64_ASM_BUG_H
  18. #define _ARCH_ARM64_ASM_BUG_H
  19. #include <asm/brk-imm.h>
  20. #ifdef CONFIG_GENERIC_BUG
  21. #define HAVE_ARCH_BUG
  22. #ifdef CONFIG_DEBUG_BUGVERBOSE
  23. #define _BUGVERBOSE_LOCATION(file, line) __BUGVERBOSE_LOCATION(file, line)
  24. #define __BUGVERBOSE_LOCATION(file, line) \
  25. ".pushsection .rodata.str,\"aMS\",@progbits,1\n" \
  26. "2: .string \"" file "\"\n\t" \
  27. ".popsection\n\t" \
  28. \
  29. ".long 2b - 0b\n\t" \
  30. ".short " #line "\n\t"
  31. #else
  32. #define _BUGVERBOSE_LOCATION(file, line)
  33. #endif
  34. #define _BUG_FLAGS(flags) __BUG_FLAGS(flags)
  35. #define __BUG_FLAGS(flags) asm volatile ( \
  36. ".pushsection __bug_table,\"a\"\n\t" \
  37. ".align 2\n\t" \
  38. "0: .long 1f - 0b\n\t" \
  39. _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
  40. ".short " #flags "\n\t" \
  41. ".popsection\n" \
  42. \
  43. "1: brk %[imm]" \
  44. :: [imm] "i" (BUG_BRK_IMM) \
  45. )
  46. #define BUG() do { \
  47. _BUG_FLAGS(0); \
  48. unreachable(); \
  49. } while (0)
  50. #define __WARN_TAINT(taint) _BUG_FLAGS(BUGFLAG_TAINT(taint))
  51. #endif /* ! CONFIG_GENERIC_BUG */
  52. #include <asm-generic/bug.h>
  53. #endif /* ! _ARCH_ARM64_ASM_BUG_H */