arch/mips/math-emu/dsemul.h

   1 typedef long gpreg_t;
   2 typedef void *vaddr_t;
   3
   4 #define REG_TO_VA (vaddr_t)
   5 #define VA_TO_REG (gpreg_t)
   6
   7 int mips_dsemul(struct pt_regs *regs, mips_instruction ir, gpreg_t cpc);
   8 int do_dsemulret(struct pt_regs *xcp);
   9
  10 /* Instruction which will always cause an address error */
  11 #define AdELOAD 0x8c000001      /* lw $0,1($0) */
  12 /* Instruction which will plainly cause a CP1 exception when FPU is disabled */
  13 #define CP1UNDEF 0x44400001    /* cfc1 $0,$0 undef  */
  14
  15 /* Instruction inserted following the badinst to further tag the sequence */
  16 #define BD_COOKIE 0x0000bd36 /* tne $0,$0 with baggage */
  17
  18 /* Setup which instruction to use for trampoline */
  19 #ifdef STANDALONE_EMULATOR
  20 #define BADINST CP1UNDEF
  21 #else
  22 #define BADINST AdELOAD
  23 #endif