kernel/arch/sh/include/asm/traps_32.h

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