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 place_e_r(
        &mut self,
        name: *const core::ffi::c_char,
        dst: RegisterA64,
        src1: RegisterA64,
        src2: RegisterA64,
        op: u8,
        shift: i32,
    ) {
        if self.log_text {
            self.log_c_char_register_a_64_register_a_64_register_a_64_i32(
                name, dst, src1, src2, shift,
            );
        }

        // CODEGEN_ASSERT! is currently incompatible with luaur_common::assert_call_handler
        // due to mismatched argument types (expects *const i8, macro supplies &str).
        // Mirror the checks using plain Rust asserts instead.
        assert!(dst.kind() == KindA64::x && src1.kind() == KindA64::x);
        assert!(src2.kind() == KindA64::w);
        assert!(shift >= 0 && shift <= 4);

        let sf = if dst.kind() == KindA64::x {
            0x80000000
        } else {
            0
        };

        let option = 0b010; // UXTW

        self.place(
            (dst.index() as u32)
                | ((src1.index() as u32) << 5)
                | ((shift as u32) << 10)
                | ((option as u32) << 13)
                | ((src2.index() as u32) << 16)
                | (1 << 21)
                | ((op as u32) << 24)
                | sf,
        );
        self.commit();
    }
}