/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_TRAPS_32_H
#define __ASM_SH_TRAPS_32_H

#include <linux/types.h>
#include <asm/mmu.h>

#ifdef CONFIG_CPU_HAS_SR_RB
#define lookup_exception_vector()       \
({                                      \
        unsigned long _vec;             \
                                        \
        __asm__ __volatile__ (          \
                "stc r2_bank, %0\n\t"   \
                : "=r" (_vec)           \
        );                              \
                                        \
        _vec;                           \
})
#else
#define lookup_exception_vector()       \
({                                      \
        unsigned long _vec;             \
        __asm__ __volatile__ (          \
                "mov r4, %0\n\t"        \
                : "=r" (_vec)           \
        );                              \
                                        \
        _vec;                           \
})
#endif

static inline void trigger_address_error(void)
{
        __asm__ __volatile__ (
                "ldc %0, sr\n\t"
                "mov.l @%1, %0"
                :
                : "r" (0x10000000), "r" (0x80000001)
        );
}

asmlinkage void do_address_error(struct pt_regs *regs,
                                 unsigned long writeaccess,
                                 unsigned long address);
asmlinkage void do_page_fault(struct pt_regs *regs,
                              unsigned long error_code,
                              unsigned long address);
asmlinkage void do_divide_error(unsigned long r4);
asmlinkage void do_reserved_inst(void);
asmlinkage void do_illegal_slot_inst(void);
asmlinkage void do_exception_error(void);

#define BUILD_TRAP_HANDLER(name)                                        \
asmlinkage void name##_trap_handler(unsigned long r4, unsigned long r5, \
                                    unsigned long r6, unsigned long r7, \
                                    struct pt_regs __regs)

#define TRAP_HANDLER_DECL                               \
        struct pt_regs *regs = RELOC_HIDE(&__regs, 0);  \
        unsigned int vec = regs->tra;                   \
        (void)vec;

#endif /* __ASM_SH_TRAPS_32_H */