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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_BUG_H
#define _ASM_S390_BUG_H
#include <linux/compiler.h>
#include <linux/const.h>
#include <linux/stringify.h>
#define MONCODE_BUG _AC(0, U)
#define MONCODE_BUG_ARG _AC(1, U)
#ifndef __ASSEMBLER__
#if defined(CONFIG_BUG) && defined(CONFIG_CC_HAS_ASM_IMMEDIATE_STRINGS)
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define __BUG_ENTRY_VERBOSE(file, line) \
" .long " file " - . # bug_entry::file\n" \
" .short " line " # bug_entry::line\n"
#else
#define __BUG_ENTRY_VERBOSE(file, line)
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE_DETAILED
#define WARN_CONDITION_STR(cond_str) cond_str
#else
#define WARN_CONDITION_STR(cond_str) ""
#endif
#define __BUG_ENTRY(format, file, line, flags, size) \
" .section __bug_table,\"aw\"\n" \
"1: .long 0b - . # bug_entry::bug_addr\n"\
" .long " format " - . # bug_entry::format\n" \
__BUG_ENTRY_VERBOSE(file, line) \
" .short "flags" # bug_entry::flags\n" \
" .org 1b+"size"\n" \
" .previous"
#define __BUG_ASM(cond_str, flags) \
do { \
asm_inline volatile("\n" \
"0: mc %[monc](%%r0),0\n" \
__BUG_ENTRY("%[frmt]", "%[file]", "%[line]", \
"%[flgs]", "%[size]") \
: \
: [monc] "i" (MONCODE_BUG), \
[frmt] "i" (WARN_CONDITION_STR(cond_str)), \
[file] "i" (__FILE__), \
[line] "i" (__LINE__), \
[flgs] "i" (flags), \
[size] "i" (sizeof(struct bug_entry))); \
} while (0)
#define BUG() \
do { \
__BUG_ASM("", 0); \
unreachable(); \
} while (0)
#define __WARN_FLAGS(cond_str, flags) \
do { \
__BUG_ASM(cond_str, BUGFLAG_WARNING | (flags)); \
} while (0)
#define __WARN_bug_entry(flags, format) \
({ \
struct bug_entry *bug; \
\
asm_inline volatile("\n" \
"0: larl %[bug],1f\n" \
__BUG_ENTRY("%[frmt]", "%[file]", "%[line]", \
"%[flgs]", "%[size]") \
: [bug] "=d" (bug) \
: [frmt] "i" (format), \
[file] "i" (__FILE__), \
[line] "i" (__LINE__), \
[flgs] "i" (flags), \
[size] "i" (sizeof(struct bug_entry))); \
bug; \
})
/*
* Variable Argument List (va_list) as defined in ELF Application
* Binary Interface s390x Supplement documentation.
*/
struct arch_va_list {
long __gpr;
long __fpr;
void *__overflow_arg_area;
void *__reg_save_area;
};
struct bug_entry;
struct pt_regs;
void *__warn_args(struct arch_va_list *args, struct pt_regs *regs);
void __WARN_trap(struct bug_entry *bug, ...);
#define __WARN_print_arg(flags, format, arg...) \
do { \
int __flags = (flags) | BUGFLAG_WARNING | BUGFLAG_ARGS; \
\
__WARN_trap(__WARN_bug_entry(__flags, format), ## arg); \
/* prevent tail-call optimization */ \
asm(""); \
} while (0)
#define __WARN_printf(taint, fmt, arg...) \
__WARN_print_arg(BUGFLAG_TAINT(taint), fmt, ## arg)
#define WARN_ONCE(cond, format, arg...) \
({ \
int __ret_warn_on = !!(cond); \
\
if (unlikely(__ret_warn_on)) { \
__WARN_print_arg(BUGFLAG_ONCE|BUGFLAG_TAINT(TAINT_WARN),\
format, ## arg); \
} \
__ret_warn_on; \
})
#define HAVE_ARCH_BUG
#define HAVE_ARCH_BUG_FORMAT
#define HAVE_ARCH_BUG_FORMAT_ARGS
#define ARCH_WARN_ASM(file, line, flags, size) \
".section .rodata.str,\"aMS\",@progbits,1\n" \
"9:\n" \
".asciz \"\"\n" /* Empty string for compatibility */ \
".previous\n" \
"0:\n" \
__stringify(mc 0(%r0),0) "\n" \
__BUG_ENTRY("9b", file, line, flags, size)
#define ARCH_WARN_REACHABLE
#endif /* CONFIG_BUG && CONFIG_CC_HAS_ASM_IMMEDIATE_STRINGS */
#endif /* __ASSEMBLER__ */
#include <asm-generic/bug.h>
#endif /* _ASM_S390_BUG_H */
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