cop

snes-core/src/cpu/instructionstemp/cop.rs

@@ -0,0 +1,38 @@
+use crate::cpu::{bus::Bus, registers::Registers};
+
+use super::{CPUInstruction, Decode};
+use super::decoder_common;
+use super::push_common;
+use crate::cpu::cycles;
+
+static INSTR_NAME: &'static str = "COP";
+
+pub struct COP {}
+
+impl CPUInstruction for COP {
+    fn execute(&self, registers: &mut Registers, bus: &mut Bus) {
+        push_common::do_push(registers, bus, &[registers.pbr]);
+        push_common::do_push(registers, bus, &[(registers.pc >> 8) as u8, registers.pc as u8]);
+        push_common::do_push(registers, bus, &[registers.p]);
+        registers.set_decimal_mode_flag(false);
+        registers.set_irq_disable_flag(true);
+        let (bytes, cycles) = cycles::increment_cycles_brk(registers.emulation_mode);
+        registers.increment_pc(bytes); registers.cycles += cycles;
+    }
+}
+
+impl Decode for COP {
+    fn mnemonic(&self, _registers: &Registers, _bus: &Bus, opcode: u8) -> String {
+        decoder_common::mnemonic_single_byte_instr(opcode, INSTR_NAME)
+    }
+}
+
+
+#[cfg(test)]
+mod cpu_instructions_tests {
+    use super::*;
+
+    #[test]
+    fn test() {
+    }
+}

snes-core/src/cpu/instructionstemp/mod.rs

@@ -22,6 +22,7 @@ pub mod cld;
 pub mod cli;
 pub mod clv;
 pub mod cmp;
+pub mod cop;
 pub mod bit_common;
 pub mod decoder_common;
 pub mod branch_common;