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41 lines
998 B
41 lines
998 B
use status::StatusFlags;
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use crate::asm::data::literal::{Addr, Value};
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pub(crate) mod status;
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pub const REG_COUNT: usize = 8;
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pub type CallStack = Vec<StackFrame>;
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#[derive(Default, Clone, Debug)]
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pub struct StackFrame {
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/// Program counter, address of the executed instruction
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pub pc: Addr,
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/// Status flags
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pub status: StatusFlags,
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/// Argument registers
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pub arg: [Value; REG_COUNT],
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/// Result registers
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pub res: [Value; REG_COUNT],
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/// General purpose registers
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pub gen: [Value; REG_COUNT],
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}
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impl StackFrame {
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/// Create a new stack frame at a given address
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pub fn new(addr: Addr, args: &[Value]) -> Self {
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let mut sf = StackFrame::default();
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sf.pc = addr;
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for n in 0..(args.len().min(REG_COUNT)) {
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sf.arg[n] = args[n];
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}
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sf
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}
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pub fn set_retvals(&mut self, vals: &[Value]) {
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for n in 0..(vals.len().min(REG_COUNT)) {
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self.res[n] = vals[n];
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}
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}
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}
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