luaur-code-gen 0.1.0

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::functions::writef_32::writef_32;
use crate::records::assembly_builder_x_64::AssemblyBuilderX64;
use crate::records::operand_x_64::OperandX64;

impl AssemblyBuilderX64 {
    pub fn f32x4(&mut self, x: f32, y: f32, z: f32, w: f32) -> OperandX64 {
        let pos = {
            if self.data_pos < 16 {
                let old_size = self.data.len();
                self.data.resize(self.data.len() * 2, 0);

                unsafe {
                    core::ptr::copy_nonoverlapping(
                        self.data.as_ptr(),
                        self.data.as_mut_ptr().add(old_size),
                        old_size,
                    );
                    core::ptr::write_bytes(self.data.as_mut_ptr(), 0, old_size);
                }

                self.data_pos += old_size;
            }

            self.data_pos = (self.data_pos - 16) & !(16 - 1);
            self.data_pos
        };

        unsafe {
            let data_pos = self.data.as_mut_ptr().add(pos);
            let _ = writef_32(data_pos, x);
            let _ = writef_32(data_pos.add(4), y);
            let _ = writef_32(data_pos.add(8), z);
            let _ = writef_32(data_pos.add(12), w);
        }

        OperandX64::operand_x_64_size_x_64_register_x_64_u8_register_x_64_i32(
            crate::enums::size_x_64::SizeX64::xmmword,
            crate::records::register_x_64::RegisterX64::noreg,
            1,
            crate::records::register_x_64::RegisterX64::rip,
            pos as i32 - self.data.len() as i32,
        )
    }
}