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add a few more loops (#347)

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* add a few more loops

* more
This commit is contained in:
Logan McNaughton 2025-03-22 08:23:48 +01:00 committed by GitHub
parent 09ba7e4d13
commit a58eed7dc9
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GPG Key ID: B5690EEEBB952194
1 changed files with 10 additions and 16 deletions
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26
src/device/rsp_su_instructions.rs
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@ -317,10 +317,9 @@ pub fn lw(device: &mut device::Device, opcode: u32) {
device.rsp.cpu.gpr[rs(opcode) as usize].wrapping_add(imm(opcode) as i16 as i32 as u32);
let mut w = [0; 4];
w[0] = device.rsp.mem[address as usize & 0xFFF];
w[1] = device.rsp.mem[(address as usize + 1) & 0xFFF];
w[2] = device.rsp.mem[(address as usize + 2) & 0xFFF];
w[3] = device.rsp.mem[(address as usize + 3) & 0xFFF];
for (i, item) in w.iter_mut().enumerate() {
*item = device.rsp.mem[(address as usize + i) & 0xFFF];
}
device.rsp.cpu.gpr[rt(opcode) as usize] =
((w[0] as u32) << 24) | ((w[1] as u32) << 16) | ((w[2] as u32) << 8) | (w[3] as u32)
@ -349,10 +348,9 @@ pub fn lwu(device: &mut device::Device, opcode: u32) {
device.rsp.cpu.gpr[rs(opcode) as usize].wrapping_add(imm(opcode) as i16 as i32 as u32);
let mut w = [0; 4];
w[0] = device.rsp.mem[address as usize & 0xFFF];
w[1] = device.rsp.mem[(address as usize + 1) & 0xFFF];
w[2] = device.rsp.mem[(address as usize + 2) & 0xFFF];
w[3] = device.rsp.mem[(address as usize + 3) & 0xFFF];
for (i, item) in w.iter_mut().enumerate() {
*item = device.rsp.mem[(address as usize + i) & 0xFFF];
}
device.rsp.cpu.gpr[rt(opcode) as usize] =
((w[0] as u32) << 24) | ((w[1] as u32) << 16) | ((w[2] as u32) << 8) | (w[3] as u32)
@ -378,14 +376,10 @@ pub fn sw(device: &mut device::Device, opcode: u32) {
let address =
device.rsp.cpu.gpr[rs(opcode) as usize].wrapping_add(imm(opcode) as i16 as i32 as u32);
device.rsp.mem[address as usize & 0xFFF] =
(device.rsp.cpu.gpr[rt(opcode) as usize] >> 24) as u8;
device.rsp.mem[(address as usize + 1) & 0xFFF] =
(device.rsp.cpu.gpr[rt(opcode) as usize] >> 16) as u8;
device.rsp.mem[(address as usize + 2) & 0xFFF] =
(device.rsp.cpu.gpr[rt(opcode) as usize] >> 8) as u8;
device.rsp.mem[(address as usize + 3) & 0xFFF] =
(device.rsp.cpu.gpr[rt(opcode) as usize]) as u8;
for i in 0..4 {
device.rsp.mem[(address as usize + i) & 0xFFF] =
(device.rsp.cpu.gpr[rt(opcode) as usize] >> ((3 - i) * 8)) as u8;
}
}
pub fn sll(device: &mut device::Device, opcode: u32) {