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Copy pathinstruction.c
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426 lines (391 loc) · 12.8 KB
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Copy pathinstruction.c
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426 lines (391 loc) · 12.8 KB
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#include "instruction.h"
extern int PC;
extern struct Registers regs;
extern struct Mem mem;
extern int halt_flag;
extern FILE * out_file;
extern int ins_count;
extern struct Instruction * ins;
extern int debug_flag;
void lb_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int addr = rs1_value + imm;
unsigned value = get_byte(&mem, addr);
write_register_value(®s, rd, value);
PC += 4;
if(debug_flag){
printf("lb r%d r%d %d, rs1_value = %d result = %d\n", rd, rs1, imm, rs1_value, value);
}
}
void lw_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int addr = rs1_value + imm;
unsigned value = get_word(&mem, addr);
write_register_value(®s, rd, value);
PC += 4;
if(debug_flag){
printf("lw r%d r%d %d, rs1_value = %d result = %d\n", rd, rs1, imm, rs1_value, value);
}
}
void sb_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int addr = rs1_value + imm;
write_byte(&mem, addr, get_register_value(®s, rd) & 0x000000ff);
PC += 4;
if(debug_flag){
printf("sb r%d r%d %d, rs1_value = %d, result = %d\n", rd, rs1, imm, rs1_value, get_register_value(®s, rd) & 0x000000ff);
}
}
void sw_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int addr = rs1_value + imm;
write_word(&mem, addr, get_register_value(®s, rd));
PC +=4;
if(debug_flag){
printf("sw r%d r%d %d, rs1_value = %d, result = %d\n", rd, rs1, imm, rs1_value, get_register_value(®s, rd));
}
}
void addi_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value + imm;
write_register_value(®s, rd, (unsigned int) result);
if(debug_flag){
printf("addi r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
PC += 4;
}
void subi_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value - imm;
write_register_value(®s, rd, (unsigned int) result);
PC += 4;
if(debug_flag){
printf("subi r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void andi_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned rs1_value = get_register_value(®s, rs1);
unsigned int result = rs1_value & ((unsigned int) imm);
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("andi r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void ori_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned rs1_value = get_register_value(®s, rs1);
unsigned int result = rs1_value | ((unsigned int) imm);
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("ori r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void xori_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int result = rs1_value ^ ((unsigned int) imm);
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("xori r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void sgti_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value > imm ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sgti r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void seqi_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value == imm ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("seqi r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void sgei_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value >= imm ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sgei r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void slti_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value < imm ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("slti r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void snei_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value != imm ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("snei r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void slei_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value = (int) get_register_value(®s, rs1);
int result = rs1_value <= imm ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("slei r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void beqz_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
if(debug_flag){
if(rs2 == 0){
printf("beqz r%d %d\n, rs1_value = %d\n", rs1, imm, rs1_value);
} else {
printf("beqz r%d %s, rs1_value = %d\n", rs1, branch_label, rs1_value);
}
}
if(rs2 == 0){
PC = PC + 4 + (rs1_value == 0 ? imm : 0);
} else {
int i;
int flag = 0;
for(i = 0;i < ins_count;i++){
if(strcmp(ins[i].label, branch_label) == 0){
flag = 1;
break;
}
}
if(flag){
if(rs1_value == 0){
PC = i * 4;
} else {
PC += 4;
}
} else {
printf("BEQZ error: can not find branch label %s\n", branch_label);
}
}
}
void bnez_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
if(debug_flag){
if(rs2 == 0){
printf("bnez r%d %d\n, rs1_value = %d\n", rs1, imm, rs1_value);
} else {
printf("bnez r%d %s, rs1_value = %d\n", rs1, branch_label, rs1_value);
}
}
if(rs2 == 0){
PC = PC + 4 + (rs1_value != 0 ? imm : 0);
} else {
int i;
int flag = 0;
for(i = 0;i < ins_count;i++){
if(strcmp(ins[i].label, branch_label) == 0){
flag = 1;
break;
}
}
if(flag){
if(rs1_value != 0){
PC = i * 4;
} else {
PC += 4;
}
} else {
printf("BNEZ error: can not find branch label %s\n", branch_label);
}
}
}
void jr_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
if(debug_flag){
if(rs2 == 0){
printf("jr r%d\n", rs1);
} else {
printf("jr %s\n", branch_label);
}
}
if(rs2 == 0){
PC = get_register_value(®s, rs1);
} else {
// jump to branch label
int i;
int flag = 0;
for(i = 0;i < ins_count;i++){
if(strcmp(ins[i].label, branch_label) == 0){
flag = 1;
break;
}
}
if(flag){
PC = i * 4;
} else {
printf("JR error: can not find branch label %s\n", branch_label);
}
}
}
void add_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value + rs2_value;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("add r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void sub_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value- rs2_value;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sub r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void and_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value & rs2_value;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("and r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void or_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value | rs2_value;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("or r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void xor_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value ^ rs2_value;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("xor r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void slli_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int result = rs1_value << imm;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("slli r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void srli_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int result = rs1_value >> imm;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("srli r%d r%d %d: %d %d %d\n", rd, rs1, imm, result, rs1_value, imm);
}
}
void sgt_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value > rs2_value ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sgt r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void slt_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value < rs2_value ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("slt r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void seq_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value == rs2_value ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("seq r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void sne_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value != rs2_value ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sne r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void sge_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value >= rs2_value ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sge r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void sle_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
unsigned int rs1_value = get_register_value(®s, rs1);
unsigned int rs2_value = get_register_value(®s, rs2);
unsigned int result = rs1_value <= rs2_value ? 1 : 0;
write_register_value(®s, rd, result);
PC += 4;
if(debug_flag){
printf("sle r%d r%d r%d: %d %d %d\n", rd, rs1, rs2, result, rs1_value, rs2_value);
}
}
void halt_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
if(debug_flag){
printf("halt\n");
}
halt_flag = 1;
}
void op_func(int rs1, int rs2, int rd, int imm, const char * branch_label){
int rs1_value;
if(rs2){
rs1_value = (int) get_register_value(®s, rs1);
int addr = rs1_value + imm;
unsigned int value = get_byte(&mem, addr);
printf("%u\n", value);
fprintf(out_file, "%u\n", value);
} else {
rs1_value = get_register_value(®s, rs1);
printf("%d\n", rs1_value);
fprintf(out_file, "%d\n", rs1_value);
}
if(debug_flag){
if(rs2){
printf("op r%d %d, rs1_value = %d", rs1, imm, rs1_value);
} else {
printf("op r%d, rs1_value = %d\n", rs1, rs1_value);
}
}
PC += 4;
}