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fix jal, branch instr & LD. + better print for machine status

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This commit is contained in:
Baptiste 2023-03-06 13:50:45 +01:00
parent abff8966b5
commit d352f5dcd2
2 changed files with 24 additions and 12 deletions
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2
src/main.rs
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@ -5,7 +5,7 @@ use simulator::mem_cmp;
fn main() {
let mut m = Machine::_init_machine();
let path = "memoryComp.txt".to_string();
let path = "memoryJump.txt".to_string();
let checker = mem_cmp::Mem_Checker::from(&path);
mem_cmp::Mem_Checker::fill_memory_from_Mem_Checker(&checker, &mut m);
//mem_cmp::Mem_Checker::print_Mem_Checker(&checker);

34
src/simulator/machine.rs
View File

@ -152,8 +152,20 @@ impl Machine {
pub fn print_machine_status(machine: &mut Machine) {
println!("######### Machine status #########");
for i in 0..32 {
println!(">{} : {:x}", print::REG_X[i], machine.int_reg.get_reg(i));
for i in (0..32).step_by(3) {
print!(">{0: <4} : {1:<8x}", print::REG_X[i], machine.int_reg.get_reg(i));
print!("\t");
print!(">{0: <4} : {1:<8x}", print::REG_X[i+1], machine.int_reg.get_reg(i+1));
print!("\t");
if i+2 < 32 {
print!(">{0: <4} : {1:<8x}", print::REG_X[i+2], machine.int_reg.get_reg(i+2));
}
println!();
}
println!("________________SP________________");
let sp_index = machine.int_reg.get_reg(2);
for i in 0..5 {
println!("SP+{:<2} : {:16x}", i*8, Self::read_memory(machine, 8, (sp_index + i*8) as usize));
}
println!("##################################");
}
@ -213,11 +225,11 @@ impl Machine {
},
RISCV_JAL => {
machine.int_reg.set_reg(inst.rd as usize, machine.pc as i64);
machine.pc += inst.imm21_1_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm21_1_signed as i64 - 4) as u64;
},
RISCV_JALR => {
let tmp = machine.pc;
machine.pc = (machine.int_reg.get_reg(inst.rs1 as usize) as u64 + inst.imm12_I_signed as u64) & 0xfffffffe;
machine.pc = (machine.int_reg.get_reg(inst.rs1 as usize) + inst.imm12_I_signed as i64) as u64 & 0xfffffffe;
machine.int_reg.set_reg(inst.rd as usize, tmp as i64);
},
@ -227,32 +239,32 @@ impl Machine {
match inst.funct3 {
RISCV_BR_BEQ => {
if machine.int_reg.get_reg(inst.rs1 as usize) == machine.int_reg.get_reg(inst.rs2 as usize) {
machine.pc += inst.imm13_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm13_signed as i64 - 4) as u64;
}
},
RISCV_BR_BNE => {
if machine.int_reg.get_reg(inst.rs1 as usize) != machine.int_reg.get_reg(inst.rs2 as usize) {
machine.pc += inst.imm13_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm13_signed as i64 - 4) as u64;
}
},
RISCV_BR_BLT => {
if machine.int_reg.get_reg(inst.rs1 as usize) < machine.int_reg.get_reg(inst.rs2 as usize) {
machine.pc += inst.imm13_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm13_signed as i64 - 4) as u64;
}
},
RISCV_BR_BGE => {
if machine.int_reg.get_reg(inst.rs1 as usize) >= machine.int_reg.get_reg(inst.rs2 as usize) {
machine.pc += inst.imm13_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm13_signed as i64 - 4) as u64;
}
},
RISCV_BR_BLTU => {
if machine.int_reg.get_reg(inst.rs1 as usize) < machine.int_reg.get_reg(inst.rs2 as usize) {
machine.pc += inst.imm13_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm13_signed as i64 - 4) as u64;
}
},
RISCV_BR_BGEU => {
if machine.int_reg.get_reg(inst.rs1 as usize) >= machine.int_reg.get_reg(inst.rs2 as usize) {
machine.pc += inst.imm13_signed as u64 - 4;
machine.pc = (machine.pc as i64 + inst.imm13_signed as i64 - 4) as u64;
}
},
_ => {
@ -278,7 +290,7 @@ impl Machine {
machine.int_reg.set_reg(inst.rd as usize, tmp);
},
RISCV_LD_LD => {
let tmp = Self::read_memory(machine, 1, (machine.int_reg.get_reg(inst.rs1 as usize) + inst.imm12_I_signed as i64) as usize) as i64;
let tmp = Self::read_memory(machine, 8, (machine.int_reg.get_reg(inst.rs1 as usize) + inst.imm12_I_signed as i64) as usize) as i64;
machine.int_reg.set_reg(inst.rd as usize, tmp);
},
_ => {