luaur-code-gen 0.1.0

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::enums::kind_a_64::KindA64;
use crate::macros::codegen_assert::CODEGEN_ASSERT;
use crate::records::assembly_builder_a_64::AssemblyBuilderA64;
use crate::records::register_a_64::RegisterA64;

impl AssemblyBuilderA64 {
    pub fn sbfx_register_a_64_register_a_64_u8_u8(
        &mut self,
        dst: RegisterA64,
        src: RegisterA64,
        f: u8,
        w: u8,
    ) {
        let size = if dst.kind() == KindA64::x { 64 } else { 32 };

        CODEGEN_ASSERT!(w > 0 && (f as u32) + (w as u32) <= size);

        // f * 100 + w is only used for disassembly printout; in the future we might replace it with two separate fields for readability
        self.place_bfm(
            b"sbfx".as_ptr() as *const core::ffi::c_char,
            dst,
            src,
            (f as i32) * 100 + w as i32,
            0b00_100110,
            f as i32,
            f as i32 + w as i32 - 1,
        );
    }
}