Commit e6891b2422
Changed files (1)
src
link
src/link/MachO.zig
@@ -3794,261 +3794,6 @@ pub fn findFirst(comptime T: type, haystack: []align(1) const T, start: usize, p
return i;
}
-// fn snapshotState(self: *MachO) !void {
-// const emit = self.base.options.emit orelse {
-// log.debug("no emit directory found; skipping snapshot...", .{});
-// return;
-// };
-
-// const Snapshot = struct {
-// const Node = struct {
-// const Tag = enum {
-// section_start,
-// section_end,
-// atom_start,
-// atom_end,
-// relocation,
-
-// pub fn jsonStringify(
-// tag: Tag,
-// options: std.json.StringifyOptions,
-// out_stream: anytype,
-// ) !void {
-// _ = options;
-// switch (tag) {
-// .section_start => try out_stream.writeAll("\"section_start\""),
-// .section_end => try out_stream.writeAll("\"section_end\""),
-// .atom_start => try out_stream.writeAll("\"atom_start\""),
-// .atom_end => try out_stream.writeAll("\"atom_end\""),
-// .relocation => try out_stream.writeAll("\"relocation\""),
-// }
-// }
-// };
-// const Payload = struct {
-// name: []const u8 = "",
-// aliases: [][]const u8 = &[0][]const u8{},
-// is_global: bool = false,
-// target: u64 = 0,
-// };
-// address: u64,
-// tag: Tag,
-// payload: Payload,
-// };
-// timestamp: i128,
-// nodes: []Node,
-// };
-
-// var arena_allocator = std.heap.ArenaAllocator.init(self.base.allocator);
-// defer arena_allocator.deinit();
-// const arena = arena_allocator.allocator();
-
-// const out_file = try emit.directory.handle.createFile("snapshots.json", .{
-// .truncate = false,
-// .read = true,
-// });
-// defer out_file.close();
-
-// if (out_file.seekFromEnd(-1)) {
-// try out_file.writer().writeByte(',');
-// } else |err| switch (err) {
-// error.Unseekable => try out_file.writer().writeByte('['),
-// else => |e| return e,
-// }
-// const writer = out_file.writer();
-
-// var snapshot = Snapshot{
-// .timestamp = std.time.nanoTimestamp(),
-// .nodes = undefined,
-// };
-// var nodes = std.ArrayList(Snapshot.Node).init(arena);
-
-// for (self.section_ordinals.keys()) |key| {
-// const sect = self.getSection(key);
-// const sect_name = try std.fmt.allocPrint(arena, "{s},{s}", .{ sect.segName(), sect.sectName() });
-// try nodes.append(.{
-// .address = sect.addr,
-// .tag = .section_start,
-// .payload = .{ .name = sect_name },
-// });
-
-// const is_tlv = sect.type_() == macho.S_THREAD_LOCAL_VARIABLES;
-
-// var atom: *Atom = self.atoms.get(key) orelse {
-// try nodes.append(.{
-// .address = sect.addr + sect.size,
-// .tag = .section_end,
-// .payload = .{},
-// });
-// continue;
-// };
-
-// while (atom.prev) |prev| {
-// atom = prev;
-// }
-
-// while (true) {
-// const atom_sym = atom.getSymbol(self);
-// var node = Snapshot.Node{
-// .address = atom_sym.n_value,
-// .tag = .atom_start,
-// .payload = .{
-// .name = atom.getName(self),
-// .is_global = self.globals.contains(atom.getName(self)),
-// },
-// };
-
-// var aliases = std.ArrayList([]const u8).init(arena);
-// for (atom.contained.items) |sym_off| {
-// if (sym_off.offset == 0) {
-// try aliases.append(self.getSymbolName(.{
-// .sym_index = sym_off.sym_index,
-// .file = atom.file,
-// }));
-// }
-// }
-// node.payload.aliases = aliases.toOwnedSlice();
-// try nodes.append(node);
-
-// var relocs = try std.ArrayList(Snapshot.Node).initCapacity(arena, atom.relocs.items.len);
-// for (atom.relocs.items) |rel| {
-// const source_addr = blk: {
-// const source_sym = atom.getSymbol(self);
-// break :blk source_sym.n_value + rel.offset;
-// };
-// const target_addr = blk: {
-// const target_atom = rel.getTargetAtom(self) orelse {
-// // If there is no atom for target, we still need to check for special, atom-less
-// // symbols such as `___dso_handle`.
-// const target_name = self.getSymbolName(rel.target);
-// if (self.globals.contains(target_name)) {
-// const atomless_sym = self.getSymbol(rel.target);
-// break :blk atomless_sym.n_value;
-// }
-// break :blk 0;
-// };
-// const target_sym = if (target_atom.isSymbolContained(rel.target, self))
-// self.getSymbol(rel.target)
-// else
-// target_atom.getSymbol(self);
-// const base_address: u64 = if (is_tlv) base_address: {
-// const sect_id: u16 = sect_id: {
-// if (self.tlv_data_section_index) |i| {
-// break :sect_id i;
-// } else if (self.tlv_bss_section_index) |i| {
-// break :sect_id i;
-// } else unreachable;
-// };
-// break :base_address self.getSection(.{
-// .seg = self.data_segment_cmd_index.?,
-// .sect = sect_id,
-// }).addr;
-// } else 0;
-// break :blk target_sym.n_value - base_address;
-// };
-
-// relocs.appendAssumeCapacity(.{
-// .address = source_addr,
-// .tag = .relocation,
-// .payload = .{ .target = target_addr },
-// });
-// }
-
-// if (atom.contained.items.len == 0) {
-// try nodes.appendSlice(relocs.items);
-// } else {
-// // Need to reverse iteration order of relocs since by default for relocatable sources
-// // they come in reverse. For linking, this doesn't matter in any way, however, for
-// // arranging the memoryline for displaying it does.
-// std.mem.reverse(Snapshot.Node, relocs.items);
-
-// var next_i: usize = 0;
-// var last_rel: usize = 0;
-// while (next_i < atom.contained.items.len) : (next_i += 1) {
-// const loc = SymbolWithLoc{
-// .sym_index = atom.contained.items[next_i].sym_index,
-// .file = atom.file,
-// };
-// const cont_sym = self.getSymbol(loc);
-// const cont_sym_name = self.getSymbolName(loc);
-// var contained_node = Snapshot.Node{
-// .address = cont_sym.n_value,
-// .tag = .atom_start,
-// .payload = .{
-// .name = cont_sym_name,
-// .is_global = self.globals.contains(cont_sym_name),
-// },
-// };
-
-// // Accumulate aliases
-// var inner_aliases = std.ArrayList([]const u8).init(arena);
-// while (true) {
-// if (next_i + 1 >= atom.contained.items.len) break;
-// const next_sym_loc = SymbolWithLoc{
-// .sym_index = atom.contained.items[next_i + 1].sym_index,
-// .file = atom.file,
-// };
-// const next_sym = self.getSymbol(next_sym_loc);
-// if (next_sym.n_value != cont_sym.n_value) break;
-// const next_sym_name = self.getSymbolName(next_sym_loc);
-// if (self.globals.contains(next_sym_name)) {
-// try inner_aliases.append(contained_node.payload.name);
-// contained_node.payload.name = next_sym_name;
-// contained_node.payload.is_global = true;
-// } else try inner_aliases.append(next_sym_name);
-// next_i += 1;
-// }
-
-// const cont_size = if (next_i + 1 < atom.contained.items.len)
-// self.getSymbol(.{
-// .sym_index = atom.contained.items[next_i + 1].sym_index,
-// .file = atom.file,
-// }).n_value - cont_sym.n_value
-// else
-// atom_sym.n_value + atom.size - cont_sym.n_value;
-
-// contained_node.payload.aliases = inner_aliases.toOwnedSlice();
-// try nodes.append(contained_node);
-
-// for (relocs.items[last_rel..]) |rel| {
-// if (rel.address >= cont_sym.n_value + cont_size) {
-// break;
-// }
-// try nodes.append(rel);
-// last_rel += 1;
-// }
-
-// try nodes.append(.{
-// .address = cont_sym.n_value + cont_size,
-// .tag = .atom_end,
-// .payload = .{},
-// });
-// }
-// }
-
-// try nodes.append(.{
-// .address = atom_sym.n_value + atom.size,
-// .tag = .atom_end,
-// .payload = .{},
-// });
-
-// if (atom.next) |next| {
-// atom = next;
-// } else break;
-// }
-
-// try nodes.append(.{
-// .address = sect.addr + sect.size,
-// .tag = .section_end,
-// .payload = .{},
-// });
-// }
-
-// snapshot.nodes = nodes.toOwnedSlice();
-
-// try std.json.stringify(snapshot, .{}, writer);
-// try writer.writeByte(']');
-// }
-
pub fn logSections(self: *MachO) void {
log.debug("sections:", .{});
for (self.sections.items(.header), 0..) |header, i| {