Skeleton developed by CMU, modified for AJOU SCE212.
There are three functions you need to implement, located in the following two files: parse.c
, run.c
Implement the following parsing functions.
instruction parsing_instr(const char* buffer, int index)
void parsing_data(const char* buffer, int index)
The parsing_instr()
function is called for every instruction in the input file, and converts them into the instruction
type.
The instruction
type is defined in util.h
The parsing_data()
function is called for every data field in the input file, and you need to fill the data into the simulated memory
.
Use the mem_read_32
and mem_write_32
as mentioned in the Hints section below.
There is a helper function you can use to convert binary strings to int (32bit) variables:
int fromBinary(char * s)
Implement the following function:
void process_instruction()
The process_instruction()
function is used by the cycle()
instruction to execute the instruction at the current PC.
Your internal register/memory state should be changed according to the instruction that is pointed to by the current PC.
- Always use the
mem_read_32()
,mem_write32()
functions when trying to read or write from thesimulated memory
. This includes your implementation of the load/store functions, but also when you are loadingdata
region to thesimulated memory
. - You may generate input files of very simple instructions to check the functionality of your simulator. For example,
add $1, $1, 5
. Then you can check if the R1 of your simulator has been incremented by 5, etc.. - To compare your results to the reference simulator of the TAs that will be used to grade your simulator, execute
make test
.