diff options
Diffstat (limited to 'inc/id.h')
| -rw-r--r-- | inc/id.h | 33 |
1 files changed, 26 insertions, 7 deletions
@@ -1,5 +1,6 @@ #ifndef ID_H #define ID_H +#include "instr.h" #include "instrDTO.h" #include "response.h" #include "stage.h" @@ -19,20 +20,38 @@ class ID : public Stage /** * Parse an instruction into a type, opcode, and fields. If the type is * invalid, only the type field will be set. + * + * This method is marked public so it may be tested, and is not used outside + * of this class during normal execution. + * * @param the resulting first field, which varies per type. To call this * function properly, this field must contain the full instruction bytes on * function entry. * @param the resulting second field, which varies per type. * @param the resulting third field, which varies per type. - * @param the resulting type. - * @param the resulting opcode. + * @param the resulting mnemonic. */ void get_instr_fields( - signed int &s1, - signed int &s2, - signed int &s3, - unsigned int &type, - unsigned int &opcode); + signed int &s1, signed int &s2, signed int &s3, Mnemonic &m); + + private: + /** + * Helper for `get_instr_fields`. + * Given a raw instruction, returns the mnemonic and type. + * This operation will destroy the original arguments. + * @param the raw bits to parse. + * @param the resulting mnemonic. + * @param the resulting type. + */ + void split_instr(signed int &raw, unsigned int &type, Mnemonic &m); + /** + * Facilitates checking out a register by dereferencing the register + specified by the first parameter. Registers that are checked out cannot be + checked out until they are checked in. + * @param + * @return the contents of the register. + */ + Response dereference_register(signed int &); }; #endif /* ID_D_INCLUDED */ |