diff options
Diffstat (limited to 'opcode.h')
| -rw-r--r-- | opcode.h | 27 |
1 files changed, 27 insertions, 0 deletions
@@ -18,6 +18,31 @@ #define V (1 << 6) /* oVerflow flag. */ #define N (1 << 7) /* Negative flag. */ +extern uint8_t get_addrsize(uint8_t prefix, uint8_t addrmode); + +/* reg_expr, and val_expr are the arithmetic expressions + * that will be used for either the value, or register, such as '+', or '-'. + */ +#define setreg(reg, reg_expr, reg_idx, val, val_expr, val_idx, size) {\ + switch (size) {\ + case 7: reg[(reg_idx) reg_expr 7] = val[(val_idx) val_expr 7];\ + case 6: reg[(reg_idx) reg_expr 6] = val[(val_idx) val_expr 6];\ + case 5: reg[(reg_idx) reg_expr 5] = val[(val_idx) val_expr 5];\ + case 4: reg[(reg_idx) reg_expr 4] = val[(val_idx) val_expr 4];\ + case 3: reg[(reg_idx) reg_expr 3] = val[(val_idx) val_expr 3];\ + case 2: reg[(reg_idx) reg_expr 2] = val[(val_idx) val_expr 2];\ + case 1: reg[(reg_idx) reg_expr 1] = val[(val_idx) val_expr 1];\ + case 0: reg[(reg_idx) reg_expr 0] = val[(val_idx) val_expr 0];\ + }\ +} + +#define setreg_sw(reg, reg_idx, val, val_idx, prefix, addrmode, type) {\ + switch (type) {\ + case RS: setreg(reg, +, reg_idx, val, +, val_idx, (1 << (prefix >> 4))-1); break;\ + case AM: setreg(reg, +, reg_idx, val, +, val_idx, get_addrsize(prefix, addrmode)); break;\ + }\ +} + extern uint8_t *addr; /* Address Space. */ union reg { @@ -37,3 +62,5 @@ struct sux { }; extern int asmmon(); + +enum sw_type {RS, AM, BYTE}; |