forked from MightyPork/crsn
parent
d489b214e0
commit
8222efe6da
GPG Key ID:
2C5FD5035250423D
@ -0,0 +1,126 @@ |
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use std::any::{Any, TypeId}; |
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use std::collections::HashMap; |
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use crate::asm::data::{DstDisp, Rd, Register, SrcDisp, Wr}; |
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use crate::asm::data::literal::{Addr, Value}; |
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use crate::asm::instr::op::EvalRes; |
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use crate::runtime::fault::Fault; |
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use crate::runtime::frame::{CallStack, REG_COUNT, StackFrame}; |
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use crate::runtime::program::Program; |
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use crate::asm::instr::Cond; |
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use crate::runtime::frame::status::StatusFlags; |
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pub struct RunState { |
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/// Active stack frame
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pub frame: StackFrame, |
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/// Call stack
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pub call_stack: CallStack, |
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/// Extension data
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pub ext_data: HashMap<TypeId, Box<dyn Any + Send>>, |
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} |
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impl RunState { |
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pub fn ext_mut<T: Send + Default + 'static>(&mut self) -> &mut T { |
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if !self.ext_data.contains_key(&TypeId::of::<T>()) { |
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self.ext_data.insert(TypeId::of::<T>(), Box::new(T::default())); |
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} |
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self.ext_data.get_mut(&TypeId::of::<T>()).unwrap() |
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.downcast_mut().unwrap() |
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} |
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pub fn set_flag(&mut self, cond : Cond, set : bool) { |
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if set { |
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self.frame.status.set(cond); |
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} |
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} |
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pub fn test_cond(&self, cond : Cond) -> bool { |
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self.frame.status.test(cond) |
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} |
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pub fn set_pc(&mut self, pc: Addr) { |
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self.frame.pc = pc; |
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} |
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pub fn get_pc(&self) -> Addr { |
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self.frame.pc |
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} |
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pub fn clear_status(&mut self) { |
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self.frame.status.clear(); |
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} |
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pub fn update_status(&mut self, val: Value) { |
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self.frame.status.update(val); |
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} |
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pub fn read(&mut self, rd: Rd) -> Result<Value, Fault> { |
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match rd.d() { |
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SrcDisp::Immediate(v) => Ok(v), |
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SrcDisp::Register(Register::Res(rn)) => { |
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if rn >= REG_COUNT as u8 { |
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Err(Fault::RegisterNotExist { reg: Register::Res(rn) }) // TODO use match after @ when stabilized https://github.com/rust-lang/rust/issues/65490
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} else { |
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trace!("Rd {:?} = {}", rd, self.frame.res[rn as usize]); |
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Ok(self.frame.res[rn as usize]) |
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} |
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} |
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SrcDisp::Register(Register::Arg(rn)) => { |
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if rn >= REG_COUNT as u8 { |
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Err(Fault::RegisterNotExist { reg: Register::Arg(rn) }) |
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} else { |
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trace!("Rd {:?} = {}", rd, self.frame.arg[rn as usize]); |
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Ok(self.frame.arg[rn as usize]) |
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} |
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} |
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SrcDisp::Register(Register::Gen(rn)) => { |
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if rn >= REG_COUNT as u8 { |
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Err(Fault::RegisterNotExist { reg: Register::Gen(rn) }) |
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} else { |
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trace!("Rd {:?} = {}", rd, self.frame.gen[rn as usize]); |
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Ok(self.frame.gen[rn as usize]) |
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} |
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} |
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SrcDisp::ObjectPtr(_) => { |
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unimplemented!("Read object ptr") |
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} |
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} |
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} |
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pub fn write(&mut self, wr: Wr, val: Value) -> Result<(), Fault> { |
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trace!("WR {:?} := {}", wr, val); |
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match wr.d() { |
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DstDisp::Discard => { |
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/* Discard */ |
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Ok(()) |
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} |
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DstDisp::Register(Register::Res(rn)) => { |
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if rn >= REG_COUNT as u8 { |
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Err(Fault::RegisterNotExist { reg: Register::Res(rn) }) // TODO use match after @ when stabilized https://github.com/rust-lang/rust/issues/65490
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} else { |
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Err(Fault::RegisterNotWritable { reg: Register::Res(rn) }) |
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} |
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} |
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DstDisp::Register(Register::Arg(rn)) => { |
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if rn >= REG_COUNT as u8 { |
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Err(Fault::RegisterNotExist { reg: Register::Arg(rn) }) |
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} else { |
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Err(Fault::RegisterNotWritable { reg: Register::Res(rn) }) |
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} |
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} |
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DstDisp::Register(Register::Gen(rn)) => { |
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if rn >= REG_COUNT as u8 { |
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Err(Fault::RegisterNotExist { reg: Register::Gen(rn) }) |
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} else { |
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self.frame.gen[rn as usize] = val; |
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Ok(()) |
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} |
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} |
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DstDisp::ObjectPtr(_) => { |
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unimplemented!("Write object ptr") |
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} |
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} |
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} |
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} |
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