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-.\n" \ 19 " .long 1b-.\n" \ 20 " .short %0,%1\n" \ 21 " .org 2b+%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_inline volatile( \ 32 "0: mc 0,0\n" \ 33 ".section __bug_table,\"awM\",@progbits,%1\n" \ 34 "1: .long 0b-.\n" \ 35 " .short %0\n" \ 36 " .org 1b+%1\n" \ 37 ".previous\n" \ 38 : : "i" (x), \ 39 "i" (sizeof(struct bug_entry))); \ 40 } while (0) 41 42 #endif /* CONFIG_DEBUG_BUGVERBOSE */ 43 44 #define BUG() do { \ 45 __EMIT_BUG(0); \ 46 unreachable(); \ 47 } while (0) 48 49 #define __WARN_FLAGS(flags) do { \ 50 __EMIT_BUG(BUGFLAG_WARNING|(flags)); \ 51 } while (0) 52 53 #define WARN_ON(x) ({ \ 54 int __ret_warn_on = !!(x); \ 55 if (__builtin_constant_p(__ret_warn_on)) { \ 56 if (__ret_warn_on) \ 57 __WARN(); \ 58 } else { \ 59 if (unlikely(__ret_warn_on)) \ 60 __WARN(); \ 61 } \ 62 unlikely(__ret_warn_on); \ 63 }) 64 65 #define HAVE_ARCH_BUG 66 #define HAVE_ARCH_WARN_ON 67 #endif /* CONFIG_BUG */ 68 69 #include <asm-generic/bug.h> 70 71 #endif /* _ASM_S390_BUG_H */ 72