traps_32.h

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#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_divide_error(unsigned long r4, unsigned long r5,
                unsigned long r6, unsigned long r7,
                struct pt_regs __regs);
asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5,
                unsigned long r6, unsigned long r7,
                struct pt_regs __regs);
asmlinkage void do_illegal_slot_inst(unsigned long r4, unsigned long r5,
                unsigned long r6, unsigned long r7,
                struct pt_regs __regs);
asmlinkage void do_exception_error(unsigned long r4, unsigned long r5,
                   unsigned long r6, unsigned long r7,
                   struct pt_regs __regs);

#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 */