diff options
Diffstat (limited to 'src/opcode.h')
| -rw-r--r-- | src/opcode.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/opcode.h b/src/opcode.h index 6b2288d48..8678ef73d 100644 --- a/src/opcode.h +++ b/src/opcode.h @@ -10,9 +10,12 @@ #define MAXARG_Bx (0xffff) #define MAXARG_sBx (MAXARG_Bx>>1) /* `sBx' is signed */ -/* instructions OP:A:B:C = 7:9:9:7 (32 bits) */ -/* OP:A:Bx = 7:9:16 */ -/* OP:Ax = 7:25 */ +/* instructions: packed 32 bit */ +/* ------------------------------- */ +/* A:B:C:OP = 9: 9: 7: 7 */ +/* A:Bx:OP = 9:16: 7 */ +/* Ax:OP = 25: 7 */ +/* A:Bz:Cz:OP = 9:14: 2: 7 */ #define GET_OPCODE(i) ((int)(((mrb_code)(i)) & 0x7f)) #define GETARG_A(i) ((int)((((mrb_code)(i)) >> 23) & 0x1ff)) |