diff options
| -rw-r--r-- | disas/nanomips.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp index 06d2400284..fe0c4af4cc 100644 --- a/disas/nanomips.cpp +++ b/disas/nanomips.cpp @@ -498,6 +498,28 @@ uint64 NMD::decode_gpr_gpr2_reg1(uint64 d) } +/* + * NMD::decode_gpr_gpr2_reg2() - decoder for 'gpr2.reg2' gpr encoding type + * + * Map a 2-bit code to the 5-bit register space according to this pattern: + * + * 3 2 1 0 + * | | | | + * | | | | + * | | | └-----------------┐ + * | | └-----------------┐ | + * | └-----------------┐ | | + * └-----------------┐ | | | + * | | | | + * | | | | + * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 + * 3 2 1 0 + * + * Used in handling following instructions: + * + * - MOVEP + * - MOVEP[REV] + */ uint64 NMD::decode_gpr_gpr2_reg2(uint64 d) { static uint64 register_list[] = { 5, 6, 7, 8 }; |