v2.gen.arm64 #

fn Gen.new(mod &mir.Module) &Gen

fn Linker.new(macho &MachOObject) &Linker

fn MachOObject.new() &MachOObject

struct Gen {
	mod &mir.Module
mut:
	macho &MachOObject
pub mut:
	stack_map      map[int]int
	alloca_offsets map[int]int
	stack_size     int
	curr_offset    int

	block_offsets  map[int]int
	pending_labels map[int][]int

	// Register allocation
	reg_map   map[int]int
	used_regs []int
	next_blk  int

	// Track which string literals have been materialized (value_id -> str_data offset)
	string_literal_offsets map[int]int

	// Cache for parsed constant integer values (value_id -> parsed i64)
	const_cache map[int]i64

	// Current function's return type (for handling struct returns)
	cur_func_ret_type int
	cur_func_name     string

	// Stack offset where x8 (indirect return pointer) is saved for large struct returns
	x8_save_offset int
}

fn (mut g Gen) gen()

fn (mut g Gen) write_file(path string)

fn (mut g Gen) link_executable(output_path string)

struct Linker {
	macho &MachOObject
mut:
	// Output buffer
	buf []u8

	// Segment/section info
	text_vmaddr   u64
	text_fileoff  int
	text_size     int
	data_vmaddr   u64
	data_fileoff  int
	data_size     int
	linkedit_off  int
	linkedit_size int

	// External symbols needing binding
	extern_syms []string

	// GOT entries for external symbols
	got_offset int // Offset within __DATA segment
	got_size   int

	// Stubs for external function calls
	stubs_offset int
	stubs_size   int

	// Symbol to GOT index mapping
	sym_to_got map[string]int

	// Code start offset (after header + load commands)
	code_start int
}

fn (mut l Linker) link(output_path string, entry_name string)

struct MachOObject {
pub mut:
	text_data []u8
	str_data  []u8
	data_data []u8

	relocs    []RelocationInfo
	symbols   []Symbol
	str_table []u8
}

fn (mut m MachOObject) add_symbol(name string, addr u64, is_ext bool, sect u8) int

fn (mut m MachOObject) add_undefined(name string) int

fn (mut m MachOObject) add_reloc(addr int, sym_idx int, typ int, pcrel bool)

fn (mut m MachOObject) write(path string)