1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_S390_BUG_H 3 #define _ASM_S390_BUG_H 4 5 #include <linux/kernel.h> 6 7 #ifdef CONFIG_BUG 8 9 #ifdef CONFIG_DEBUG_BUGVERBOSE 10 11 #define __EMIT_BUG(x) do { \ 12 asm volatile( \ 13 "0: j 0b+2\n" \ 14 "1:\n" \ 15 ".section .rodata.str,\"aMS\",@progbits,1\n" \ 16 "2: .asciz \""__FILE__"\"\n" \ 17 ".previous\n" \ 18 ".section __bug_table,\"aw\"\n" \ 19 "3: .long 1b-3b,2b-3b\n" \ 20 " .short %0,%1\n" \ 21 " .org 3b+%2\n" \ 22 ".previous\n" \ 23 : : "i" (__LINE__), \ 24 "i" (x), \ 25 "i" (sizeof(struct bug_entry))); \ 26 } while (0) 27 28 #else /* CONFIG_DEBUG_BUGVERBOSE */ 29 30 #define __EMIT_BUG(x) do { \ 31 asm volatile( \ 32 "0: j 0b+2\n" \ 33 "1:\n" \ 34 ".section __bug_table,\"aw\"\n" \ 35 "2: .long 1b-2b\n" \ 36 " .short %0\n" \ 37 " .org 2b+%1\n" \ 38 ".previous\n" \ 39 : : "i" (x), \ 40 "i" (sizeof(struct bug_entry))); \ 41 } while (0) 42 43 #endif /* CONFIG_DEBUG_BUGVERBOSE */ 44 45 #define BUG() do { \ 46 __EMIT_BUG(0); \ 47 unreachable(); \ 48 } while (0) 49 50 #define __WARN_FLAGS(flags) do { \ 51 __EMIT_BUG(BUGFLAG_WARNING|(flags)); \ 52 } while (0) 53 54 #define WARN_ON(x) ({ \ 55 int __ret_warn_on = !!(x); \ 56 if (__builtin_constant_p(__ret_warn_on)) { \ 57 if (__ret_warn_on) \ 58 __WARN(); \ 59 } else { \ 60 if (unlikely(__ret_warn_on)) \ 61 __WARN(); \ 62 } \ 63 unlikely(__ret_warn_on); \ 64 }) 65 66 #define HAVE_ARCH_BUG 67 #define HAVE_ARCH_WARN_ON 68 #endif /* CONFIG_BUG */ 69 70 #include <asm-generic/bug.h> 71 72 #endif /* _ASM_S390_BUG_H */ 73