1const std = @import("std");
2const Allocator = std.mem.Allocator;
3const Elf = @import("Object/Elf.zig");
4
5const Object = @This();
6
7format: std.Target.ObjectFormat,
8target: std.Target,
9
10pub fn create(gpa: Allocator, target: std.Target) !*Object {
11 switch (target.ofmt) {
12 .elf => return Elf.create(gpa, target),
13 else => unreachable,
14 }
15}
16
17pub fn deinit(obj: *Object) void {
18 switch (obj.format) {
19 .elf => @as(*Elf, @alignCast(@fieldParentPtr("obj", obj))).deinit(),
20 else => unreachable,
21 }
22}
23
24pub const Section = union(enum) {
25 undefined,
26 data,
27 read_only_data,
28 func,
29 strings,
30 custom: []const u8,
31};
32
33pub fn getSection(obj: *Object, section: Section) !*std.ArrayList(u8) {
34 switch (obj.format) {
35 .elf => return @as(*Elf, @alignCast(@fieldParentPtr("obj", obj))).getSection(section),
36 else => unreachable,
37 }
38}
39
40pub const SymbolType = enum {
41 func,
42 variable,
43 external,
44};
45
46pub fn declareSymbol(
47 obj: *Object,
48 section: Section,
49 name: ?[]const u8,
50 linkage: std.builtin.GlobalLinkage,
51 @"type": SymbolType,
52 offset: u64,
53 size: u64,
54) ![]const u8 {
55 switch (obj.format) {
56 .elf => return @as(*Elf, @alignCast(@fieldParentPtr("obj", obj))).declareSymbol(section, name, linkage, @"type", offset, size),
57 else => unreachable,
58 }
59}
60
61pub fn addRelocation(obj: *Object, name: []const u8, section: Section, address: u64, addend: i64) !void {
62 switch (obj.format) {
63 .elf => return @as(*Elf, @alignCast(@fieldParentPtr("obj", obj))).addRelocation(name, section, address, addend),
64 else => unreachable,
65 }
66}
67
68pub fn finish(obj: *Object, w: *std.Io.Writer) !void {
69 switch (obj.format) {
70 .elf => return @as(*Elf, @alignCast(@fieldParentPtr("obj", obj))).finish(w),
71 else => unreachable,
72 }
73}