luaur-code-gen 0.1.0

Native (A64/X64) code generation for Luau (Rust).
Documentation 
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use crate::macros::codegen_assert::CODEGEN_ASSERT;
use crate::records::code_allocator::CodeAllocator;

impl CodeAllocator {
    pub fn allocate_new_block(&mut self, unwind_info_size: &mut usize) -> bool {
        if (self.blocks.len() + 1) * self.block_size > self.max_total_size {
            return false;
        }

        let block = self.allocate_pages(self.block_size);

        if block.is_null() {
            return false;
        }

        self.block_pos = block;
        self.block_end = unsafe { block.add(self.block_size) };
        self.blocks.push(block);

        if let Some(create_block_unwind_info) = self.create_block_unwind_info {
            let unwind_info = unsafe {
                create_block_unwind_info(self.context, block, self.block_size, unwind_info_size)
            };

            const K_CODE_ALIGNMENT: usize = 32;
            *unwind_info_size =
                (*unwind_info_size + (K_CODE_ALIGNMENT - 1)) & !(K_CODE_ALIGNMENT - 1);

            CODEGEN_ASSERT!(*unwind_info_size <= CodeAllocator::kMaxReservedDataSize);

            if unwind_info.is_null() {
                return false;
            }

            self.unwind_infos.push(unwind_info);
        }

        true
    }
}