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RISC OP MUL and DIV + changement prototype OneInstruction

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This commit is contained in:
Moysan Gabriel 2022-11-16 17:48:55 +01:00
parent 98f4c0b67e
commit a4230cd357
1 changed files with 84 additions and 40 deletions
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44
src/machine.rs
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@ -31,6 +31,15 @@ impl Machine {
let mut unsigned_reg1 : u64 = 0;
let mut unsigned_reg2 : u64 = 0;
let mut long_result : i128 = 0;
/*__int128 longResult;
int32_t localDataa, localDatab;
int64_t localLongResult;
uint32_t localDataaUnsigned, localDatabUnsigned;
int32_t localResult;
float localFloat;
uint64_t value;*/
if machine.instructions.len() <= machine.pc as usize {
println!("ERROR : number max of instructions rushed");
@ -79,6 +88,40 @@ impl Machine {
},
RISCV_OP => {
if(inst.funct7 == 1){
match inst.funct3 {
RISCV_OP_M_MUL => {
long_result = (machine.int_reg[inst.rs1 as usize] * machine.int_reg[inst.rs2 as usize]) as i128;
machine.int_reg[inst.rd as usize] = (long_result & 0xffffffffffffffff) as u32;
},
RISCV_OP_M_MULH => {
long_result = (machine.int_reg[inst.rs1 as usize] * machine.int_reg[inst.rs2 as usize]) as i128;
},
RISCV_OP_M_MULHSU => {
unsigned_reg2 = machine.int_reg[inst.rs2 as usize] as u64;
long_result = (machine.int_reg[inst.rs1 as usize] as u64 * unsigned_reg2) as i128;
machine.int_reg[inst.rd as usize] = ((long_result >> 64) & 0xffffffffffffffff) as u32;
},
// VOIR CE QUE FAIT EXACTEMENT CE TRUC , PK on converve
/*
* VOIR SI LES CAST machine.int_reg[....] = i128*u64 as u32 FAUSSE RESULTAT (suit pas la logique du code c++)
* WHAT DA HECK
*/
RISCV_OP_M_MULHU => {
unsigned_reg1 = machine.int_reg[inst.rs1 as usize] as u64;
unsigned_reg2 = machine.int_reg[inst.rs2 as usize] as u64;
long_result = (unsigned_reg1 * unsigned_reg2) as i128;
machine.int_reg[inst.rd as usize] = ((long_result >> 64) & 0xffffffffffffffff) as u32;
},
RISCV_OP_M_DIV => {
machine.int_reg[inst.rd as usize] = (machine.int_reg[inst.rs1 as usize] / machine.int_reg[inst.rs2 as usize]);
}
_ => {
println!("RISCV_OP : funct7 = 1 (Multiplication) :: Error\n");
}
}
} else {
match inst.funct3 {
RISCV_OP_ADD => {
// RISCV_OP_ADD_ADD inaccessible
@ -122,6 +165,7 @@ impl Machine {
_ => {
println!("RISCV_OP undefined case\n");
}
}//LA
}
}
_ => { println!("{} opcode non géré", inst.opcode)},