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