diff options
Diffstat (limited to 'arch/mips/math-emu/dsemul.h')
| -rw-r--r-- | arch/mips/math-emu/dsemul.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/mips/math-emu/dsemul.h b/arch/mips/math-emu/dsemul.h new file mode 100644 index 00000000000..dbd85f95268 --- /dev/null +++ b/arch/mips/math-emu/dsemul.h @@ -0,0 +1,23 @@ +typedef long gpreg_t; +typedef void *vaddr_t; + +#define REG_TO_VA (vaddr_t) +#define VA_TO_REG (gpreg_t) + +int mips_dsemul(struct pt_regs *regs, mips_instruction ir, gpreg_t cpc); +int do_dsemulret(struct pt_regs *xcp); + +/* Instruction which will always cause an address error */ +#define AdELOAD 0x8c000001 /* lw $0,1($0) */ +/* Instruction which will plainly cause a CP1 exception when FPU is disabled */ +#define CP1UNDEF 0x44400001 /* cfc1 $0,$0 undef */ + +/* Instruction inserted following the badinst to further tag the sequence */ +#define BD_COOKIE 0x0000bd36 /* tne $0,$0 with baggage */ + +/* Setup which instruction to use for trampoline */ +#ifdef STANDALONE_EMULATOR +#define BADINST CP1UNDEF +#else +#define BADINST AdELOAD +#endif |