/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PARISC_BUG_H
#define _PARISC_BUG_H

/*
 * Tell the user there is some problem.
 * The offending file and line are encoded in the __bug_table section.
 */

#ifdef CONFIG_BUG
#define HAVE_ARCH_BUG
#define HAVE_ARCH_WARN_ON

/* the break instruction is used as BUG() marker.  */
#define PARISC_BUG_BREAK_ASM    "break 0x1f, 0x1fff"
#define PARISC_BUG_BREAK_INSN   0x03ffe01f  /* PARISC_BUG_BREAK_ASM */

#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
# define __BUG_REL(val) ".word " __stringify(val) " - ."
#else
# define __BUG_REL(val) ".word " __stringify(val)
#endif


#ifdef CONFIG_DEBUG_BUGVERBOSE
#define BUG()                                                           \
        do {                                                            \
                asm volatile("\n"                                       \
                             "1:\t" PARISC_BUG_BREAK_ASM "\n"           \
                             "\t.pushsection __bug_table,\"a\"\n"       \
                             "\t.align 4\n"                             \
                             "2:\t" __BUG_REL(1b) "\n"                  \
                             "\t" __BUG_REL(%c0)  "\n"                  \
                             "\t.short %1, %2\n"                        \
                             "\t.blockz %3-2*4-2*2\n"                   \
                             "\t.popsection"                            \
                             : : "i" (__FILE__), "i" (__LINE__),        \
                             "i" (0), "i" (sizeof(struct bug_entry)) ); \
                unreachable();                                          \
        } while(0)

#else
#define BUG()                                                           \
        do {                                                            \
                asm volatile(PARISC_BUG_BREAK_ASM : : );                \
                unreachable();                                          \
        } while(0)
#endif

#ifdef CONFIG_DEBUG_BUGVERBOSE
#define __WARN_FLAGS(cond_str, flags)                                   \
        do {                                                            \
                asm volatile("\n"                                       \
                             "1:\t" PARISC_BUG_BREAK_ASM "\n"           \
                             "\t.pushsection __bug_table,\"a\"\n"       \
                             "\t.align 4\n"                             \
                             "2:\t" __BUG_REL(1b) "\n"                  \
                             "\t" __BUG_REL(%c0)  "\n"                  \
                             "\t.short %1, %2\n"                        \
                             "\t.blockz %3-2*4-2*2\n"                   \
                             "\t.popsection"                            \
                             : : "i" (WARN_CONDITION_STR(cond_str) __FILE__), "i" (__LINE__), \
                             "i" (BUGFLAG_WARNING|(flags)),             \
                             "i" (sizeof(struct bug_entry)) );          \
        } while(0)
#else
#define __WARN_FLAGS(cond_str, flags)                                   \
        do {                                                            \
                asm volatile("\n"                                       \
                             "1:\t" PARISC_BUG_BREAK_ASM "\n"           \
                             "\t.pushsection __bug_table,\"a\"\n"       \
                             "\t.align 4\n"                             \
                             "2:\t" __BUG_REL(1b) "\n"                  \
                             "\t.short %0\n"                            \
                             "\t.blockz %1-4-2\n"                       \
                             "\t.popsection"                            \
                             : : "i" (BUGFLAG_WARNING|(flags)),         \
                             "i" (sizeof(struct bug_entry)) );          \
        } while(0)
#endif


#define WARN_ON(x) ({                                           \
        int __ret_warn_on = !!(x);                              \
        if (__builtin_constant_p(__ret_warn_on)) {              \
                if (__ret_warn_on)                              \
                        __WARN();                               \
        } else {                                                \
                if (unlikely(__ret_warn_on))                    \
                        __WARN();                               \
        }                                                       \
        unlikely(__ret_warn_on);                                \
})

#endif

#include <asm-generic/bug.h>
#endif