LXR linux/arch/sh/include/asm/traps

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ASM_SH_TRAPS_32_H
   3#define __ASM_SH_TRAPS_32_H
   4
   5#include <linux/types.h>
   6#include <asm/mmu.h>
   7
   8#ifdef CONFIG_CPU_HAS_SR_RB
   9#define lookup_exception_vector()       \
  10({                                      \
  11        unsigned long _vec;             \
  12                                        \
  13        __asm__ __volatile__ (          \
  14                "stc r2_bank, %0\n\t"   \
  15                : "=r" (_vec)           \
  16        );                              \
  17                                        \
  18        _vec;                           \
  19})
  20#else
  21#define lookup_exception_vector()       \
  22({                                      \
  23        unsigned long _vec;             \
  24        __asm__ __volatile__ (          \
  25                "mov r4, %0\n\t"        \
  26                : "=r" (_vec)           \
  27        );                              \
  28                                        \
  29        _vec;                           \
  30})
  31#endif
  32
  33static inline void trigger_address_error(void)
  34{
  35        __asm__ __volatile__ (
  36                "ldc %0, sr\n\t"
  37                "mov.l @%1, %0"
  38                :
  39                : "r" (0x10000000), "r" (0x80000001)
  40        );
  41}
  42
  43asmlinkage void do_address_error(struct pt_regs *regs,
  44                                 unsigned long writeaccess,
  45                                 unsigned long address);
  46asmlinkage void do_divide_error(unsigned long r4);
  47asmlinkage void do_reserved_inst(void);
  48asmlinkage void do_illegal_slot_inst(void);
  49asmlinkage void do_exception_error(void);
  50
  51#define BUILD_TRAP_HANDLER(name)                                        \
  52asmlinkage void name##_trap_handler(unsigned long r4, unsigned long r5, \
  53                                    unsigned long r6, unsigned long r7, \
  54                                    struct pt_regs __regs)
  55
  56#define TRAP_HANDLER_DECL                               \
  57        struct pt_regs *regs = RELOC_HIDE(&__regs, 0);  \
  58        unsigned int vec = regs->tra;                   \
  59        (void)vec;
  60
  61#endif /* __ASM_SH_TRAPS_32_H */
  62