| Ralf Baechle | 333d1f6 | 2005-02-28 17:55:57 +0000 | [diff] [blame] | 1 | extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc); |
| 2 | extern int do_dsemulret(struct pt_regs *xcp); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | |
| 4 | /* Instruction which will always cause an address error */ |
| 5 | #define AdELOAD 0x8c000001 /* lw $0,1($0) */ |
| 6 | /* Instruction which will plainly cause a CP1 exception when FPU is disabled */ |
| 7 | #define CP1UNDEF 0x44400001 /* cfc1 $0,$0 undef */ |
| 8 | |
| 9 | /* Instruction inserted following the badinst to further tag the sequence */ |
| 10 | #define BD_COOKIE 0x0000bd36 /* tne $0,$0 with baggage */ |
| 11 | |
| 12 | /* Setup which instruction to use for trampoline */ |
| 13 | #ifdef STANDALONE_EMULATOR |
| 14 | #define BADINST CP1UNDEF |
| 15 | #else |
| 16 | #define BADINST AdELOAD |
| 17 | #endif |