v3.gen.arm64 #

ARM64 Instruction Encoding Helpers These functions provide type-safe instruction encoding for the ARM64 backend.

fn Gen.new(m &ssa.Module) &Gen

new creates a Gen value for arm64.

fn Linker.new(macho &MachOObject) &Linker

new creates a Linker value for arm64.

fn MachOObject.new() &MachOObject

new creates a MachOObject value for arm64.

struct Gen {
mut:
	m                    &ssa.Module  = unsafe { nil }
	macho                &MachOObject = unsafe { nil }
	stack_offsets        []int
	alloca_offsets       []int
	alloca_sizes         []int
	stack_size           int
	block_offsets        []int
	pending_jmps         []PendingJmp
	fn_offsets           map[string]int
	string_cache         map[string]int
	cur_func_ret_type    ssa.TypeID
	cur_func_sret_offset int
}

Gen stores state for ARM64 code generation.

fn (mut g Gen) gen()

gen supports gen handling for Gen.

fn (mut g Gen) write_and_link(output string)

write_and_link writes and link output for arm64.

struct Linker {
	macho &MachOObject
pub mut:
	// Frameworks to link (e.g. ['Metal', 'Cocoa', 'QuartzCore'])
	frameworks []string
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

	// Multi-dylib support: dylib paths and per-symbol ordinal mapping
	dylibs       []string       // ['/usr/lib/libSystem.B.dylib', '/usr/lib/libobjc.A.dylib', ...]
	sym_to_dylib map[string]int // symbol name → index into dylibs[] (ordinal = idx + 1)

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

Linker represents linker data used by arm64.

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

link supports link handling for Linker.

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

	relocs      []RelocationInfo
	symbols     []Symbol
	str_table   []u8
	sym_by_name map[string]int // symbol name → index in symbols
}

MachOObject represents mach oobject data used by arm64.

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

add_symbol updates add symbol state for MachOObject.

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

add_undefined updates add undefined state for MachOObject.

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

add_reloc updates add reloc state for MachOObject.

fn (mut m MachOObject) write(path string)

write supports write handling for MachOObject.