luaur-code-gen 0.1.3

Native (A64/X64) code generation for Luau (Rust).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

use crate::records::assembly_builder_x_64::AssemblyBuilderX64;

impl AssemblyBuilderX64 {
    pub fn commit(&mut self) {
        // CODEGEN_ASSERT(codePos <= codeEnd);
        self.instruction_count = self.instruction_count.wrapping_add(1);

        let code_pos = self.code_pos as usize;
        let code_end = self.code_end as usize;

        if (code_end.wrapping_sub(code_pos)) < u32::from(u16::MAX) as usize {
            self.extend();
        }
    }

    pub fn extend(&mut self) {
        let count = self.get_code_size();

        let new_size = self.code.len().wrapping_mul(2);
        self.code.resize(new_size, 0);

        let data_ptr = self.code.as_mut_ptr();
        self.code_pos = unsafe { data_ptr.add(count as usize) };
        self.code_end = unsafe { data_ptr.add(self.code.len()) };
    }
}