34 lines
697 B
C
34 lines
697 B
C
/*
|
|
* This file declares functions for
|
|
* - checking instruction parameters for their validity
|
|
*/
|
|
|
|
#ifndef CHECK_H_
|
|
#define CHECK_H_
|
|
|
|
/*
|
|
* returns a valid register number or throws error if r out of range
|
|
* r: number of register to be checked
|
|
*/
|
|
int reg(int r);
|
|
|
|
/*
|
|
* returns a valid 8bit signed value or throws error if imm out of range
|
|
* imm: immediate to be checked
|
|
*/
|
|
int signed8(int imm);
|
|
|
|
/*
|
|
* returns a valid 4bit unsigned value or throws error if imm out of range
|
|
* imm: immediate to be checked
|
|
*/
|
|
int unsigned4(int imm);
|
|
|
|
/*
|
|
* returns a valid 32bit signed value or throws error if imm out of range
|
|
* imm: immediate to be checked
|
|
*/
|
|
int word(int imm);
|
|
|
|
#endif /* CHECK_H_ */
|