Getters and setters for registers

This commit is contained in:
Franco Colmenarez 2021-10-11 11:39:13 -05:00
parent 9818c57854
commit b3e6baaa3f

View File

@ -1,26 +1,100 @@
pub enum Register {
A(u8),
B(u8),
A(u8), // Accumulator
F(u8), // Flags
B(u8),
C(u8),
D(u8),
E(u8),
F(u8),
H(u8),
L(u8),
// This registers are just the same as above but combined to get a 16 bits register
BC(u16),
DE(u16),
HL(u16),
SP(u16),
PC(u16),
}
pub struct Registers {
a: Register,
b: Register,
c: Register,
d: Register,
e: Register,
f: Register,
h: Register,
sp: Register,
pc: Register,
a: u8,
f: u8,
b: u8,
c: u8,
d: u8,
e: u8,
h: u8,
l: u8,
sp: u16,
pc: u16,
}
impl Registers {
pub fn get(&self, register: Register) -> u16 {
match register {
Register::A(_) => self.a as u16,
Register::B(_) => self.b as u16,
Register::C(_) => self.c as u16,
Register::D(_) => self.d as u16,
Register::E(_) => self.e as u16,
Register::F(_) => self.f as u16,
Register::H(_) => self.h as u16,
Register::L(_) => self.l as u16,
Register::BC(_) => self.get_bc(),
Register::DE(_) => self.get_de(),
Register::HL(_) => self.get_hl(),
Register::SP(_) => self.sp,
Register::PC(_) => self.pc,
}
}
pub fn set(&mut self, register: Register) {
match register {
Register::A(val) => self.a = val,
Register::B(val) => self.b = val,
Register::C(val) => self.c = val,
Register::D(val) => self.d = val,
Register::E(val) => self.e = val,
Register::F(val) => self.f = val,
Register::H(val) => self.h = val,
Register::L(val) => self.l = val,
Register::BC(val) => self.set_bc(val),
Register::DE(val) => self.set_de(val),
Register::HL(val) => self.set_hl(val),
Register::SP(val) => self.sp = val,
Register::PC(val) => self.pc = val,
}
}
fn get_bc(&self) -> u16 {
((self.b as u16) << 8) | (self.c as u16)
}
fn get_de(&self) -> u16 {
((self.d as u16) << 8) | (self.e as u16)
}
fn get_hl(&self) -> u16 {
((self.h as u16) << 8) | (self.l as u16)
}
fn set_bc(&mut self, val: u16) {
let bytes = val.to_be_bytes();
self.b = bytes[0];
self.c = bytes[1];
}
fn set_de(&mut self, val: u16) {
let bytes = val.to_be_bytes();
self.d = bytes[0];
self.e = bytes[1];
}
fn set_hl(&mut self, val: u16) {
let bytes = val.to_be_bytes();
self.h = bytes[0];
self.l = bytes[1];
}
}
pub struct CPU {