| ... | ... | @@ -22,6 +22,7 @@ const link = @import("../link.zig"); |
| 22 | 22 | const llvm_backend = @import("../codegen/llvm.zig"); |
| 23 | 23 | const target_util = @import("../target.zig"); |
| 24 | 24 | const trace = @import("../tracy.zig").trace; |
| 25 | const zld = @import("MachO/zld.zig"); |
| 25 | 26 | |
| 26 | 27 | const Air = @import("../Air.zig"); |
| 27 | 28 | const Allocator = mem.Allocator; |
| ... | ... | @@ -57,11 +58,6 @@ pub const SearchStrategy = enum { |
| 57 | 58 | |
| 58 | 59 | pub const N_DESC_GCED: u16 = @bitCast(u16, @as(i16, -1)); |
| 59 | 60 | |
| 60 | | const SystemLib = struct { |
| 61 | | needed: bool = false, |
| 62 | | weak: bool = false, |
| 63 | | }; |
| 64 | | |
| 65 | 61 | const Section = struct { |
| 66 | 62 | header: macho.section_64, |
| 67 | 63 | segment_index: u8, |
| ... | ... | @@ -412,7 +408,7 @@ pub fn flush(self: *MachO, comp: *Compilation, prog_node: *std.Progress.Node) !v |
| 412 | 408 | } |
| 413 | 409 | |
| 414 | 410 | switch (self.mode) { |
| 415 | | .one_shot => return self.linkOneShot(comp, prog_node), |
| 411 | .one_shot => return zld.linkWithZld(self, comp, prog_node), |
| 416 | 412 | .incremental => return self.flushModule(comp, prog_node), |
| 417 | 413 | } |
| 418 | 414 | } |
| ... | ... | @@ -441,7 +437,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No |
| 441 | 437 | try d_sym.dwarf.flushModule(&self.base, module); |
| 442 | 438 | } |
| 443 | 439 | |
| 444 | | var libs = std.StringArrayHashMap(SystemLib).init(arena); |
| 440 | var libs = std.StringArrayHashMap(link.SystemLib).init(arena); |
| 445 | 441 | try self.resolveLibSystem(arena, comp, &.{}, &libs); |
| 446 | 442 | |
| 447 | 443 | const id_symlink_basename = "zld.id"; |
| ... | ... | @@ -531,7 +527,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No |
| 531 | 527 | self.logAtoms(); |
| 532 | 528 | } |
| 533 | 529 | |
| 534 | | try self.writeAtomsIncremental(); |
| 530 | try self.writeAtoms(); |
| 535 | 531 | |
| 536 | 532 | var lc_buffer = std.ArrayList(u8).init(arena); |
| 537 | 533 | const lc_writer = lc_buffer.writer(); |
| ... | ... | @@ -631,635 +627,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No |
| 631 | 627 | self.cold_start = false; |
| 632 | 628 | } |
| 633 | 629 | |
| 634 | | fn linkOneShot(self: *MachO, comp: *Compilation, prog_node: *std.Progress.Node) !void { |
| 635 | | const tracy = trace(@src()); |
| 636 | | defer tracy.end(); |
| 637 | | |
| 638 | | const gpa = self.base.allocator; |
| 639 | | var arena_allocator = std.heap.ArenaAllocator.init(gpa); |
| 640 | | defer arena_allocator.deinit(); |
| 641 | | const arena = arena_allocator.allocator(); |
| 642 | | |
| 643 | | const directory = self.base.options.emit.?.directory; // Just an alias to make it shorter to type. |
| 644 | | const full_out_path = try directory.join(arena, &[_][]const u8{self.base.options.emit.?.sub_path}); |
| 645 | | |
| 646 | | // If there is no Zig code to compile, then we should skip flushing the output file because it |
| 647 | | // will not be part of the linker line anyway. |
| 648 | | const module_obj_path: ?[]const u8 = if (self.base.options.module) |module| blk: { |
| 649 | | if (self.base.options.use_stage1) { |
| 650 | | const obj_basename = try std.zig.binNameAlloc(arena, .{ |
| 651 | | .root_name = self.base.options.root_name, |
| 652 | | .target = self.base.options.target, |
| 653 | | .output_mode = .Obj, |
| 654 | | }); |
| 655 | | switch (self.base.options.cache_mode) { |
| 656 | | .incremental => break :blk try module.zig_cache_artifact_directory.join( |
| 657 | | arena, |
| 658 | | &[_][]const u8{obj_basename}, |
| 659 | | ), |
| 660 | | .whole => break :blk try fs.path.join(arena, &.{ |
| 661 | | fs.path.dirname(full_out_path).?, obj_basename, |
| 662 | | }), |
| 663 | | } |
| 664 | | } |
| 665 | | |
| 666 | | try self.flushModule(comp, prog_node); |
| 667 | | |
| 668 | | if (fs.path.dirname(full_out_path)) |dirname| { |
| 669 | | break :blk try fs.path.join(arena, &.{ dirname, self.base.intermediary_basename.? }); |
| 670 | | } else { |
| 671 | | break :blk self.base.intermediary_basename.?; |
| 672 | | } |
| 673 | | } else null; |
| 674 | | |
| 675 | | var sub_prog_node = prog_node.start("MachO Flush", 0); |
| 676 | | sub_prog_node.activate(); |
| 677 | | sub_prog_node.context.refresh(); |
| 678 | | defer sub_prog_node.end(); |
| 679 | | |
| 680 | | const cpu_arch = self.base.options.target.cpu.arch; |
| 681 | | const os_tag = self.base.options.target.os.tag; |
| 682 | | const abi = self.base.options.target.abi; |
| 683 | | const is_lib = self.base.options.output_mode == .Lib; |
| 684 | | const is_dyn_lib = self.base.options.link_mode == .Dynamic and is_lib; |
| 685 | | const is_exe_or_dyn_lib = is_dyn_lib or self.base.options.output_mode == .Exe; |
| 686 | | const stack_size = self.base.options.stack_size_override orelse 0; |
| 687 | | const is_debug_build = self.base.options.optimize_mode == .Debug; |
| 688 | | const gc_sections = self.base.options.gc_sections orelse !is_debug_build; |
| 689 | | |
| 690 | | const id_symlink_basename = "zld.id"; |
| 691 | | |
| 692 | | var man: Cache.Manifest = undefined; |
| 693 | | defer if (!self.base.options.disable_lld_caching) man.deinit(); |
| 694 | | |
| 695 | | var digest: [Cache.hex_digest_len]u8 = undefined; |
| 696 | | |
| 697 | | if (!self.base.options.disable_lld_caching) { |
| 698 | | man = comp.cache_parent.obtain(); |
| 699 | | |
| 700 | | // We are about to obtain this lock, so here we give other processes a chance first. |
| 701 | | self.base.releaseLock(); |
| 702 | | |
| 703 | | comptime assert(Compilation.link_hash_implementation_version == 7); |
| 704 | | |
| 705 | | for (self.base.options.objects) |obj| { |
| 706 | | _ = try man.addFile(obj.path, null); |
| 707 | | man.hash.add(obj.must_link); |
| 708 | | } |
| 709 | | for (comp.c_object_table.keys()) |key| { |
| 710 | | _ = try man.addFile(key.status.success.object_path, null); |
| 711 | | } |
| 712 | | try man.addOptionalFile(module_obj_path); |
| 713 | | // We can skip hashing libc and libc++ components that we are in charge of building from Zig |
| 714 | | // installation sources because they are always a product of the compiler version + target information. |
| 715 | | man.hash.add(stack_size); |
| 716 | | man.hash.addOptional(self.base.options.pagezero_size); |
| 717 | | man.hash.addOptional(self.base.options.search_strategy); |
| 718 | | man.hash.addOptional(self.base.options.headerpad_size); |
| 719 | | man.hash.add(self.base.options.headerpad_max_install_names); |
| 720 | | man.hash.add(gc_sections); |
| 721 | | man.hash.add(self.base.options.dead_strip_dylibs); |
| 722 | | man.hash.add(self.base.options.strip); |
| 723 | | man.hash.addListOfBytes(self.base.options.lib_dirs); |
| 724 | | man.hash.addListOfBytes(self.base.options.framework_dirs); |
| 725 | | link.hashAddSystemLibs(&man.hash, self.base.options.frameworks); |
| 726 | | man.hash.addListOfBytes(self.base.options.rpath_list); |
| 727 | | if (is_dyn_lib) { |
| 728 | | man.hash.addOptionalBytes(self.base.options.install_name); |
| 729 | | man.hash.addOptional(self.base.options.version); |
| 730 | | } |
| 731 | | link.hashAddSystemLibs(&man.hash, self.base.options.system_libs); |
| 732 | | man.hash.addOptionalBytes(self.base.options.sysroot); |
| 733 | | try man.addOptionalFile(self.base.options.entitlements); |
| 734 | | |
| 735 | | // We don't actually care whether it's a cache hit or miss; we just need the digest and the lock. |
| 736 | | _ = try man.hit(); |
| 737 | | digest = man.final(); |
| 738 | | |
| 739 | | var prev_digest_buf: [digest.len]u8 = undefined; |
| 740 | | const prev_digest: []u8 = Cache.readSmallFile( |
| 741 | | directory.handle, |
| 742 | | id_symlink_basename, |
| 743 | | &prev_digest_buf, |
| 744 | | ) catch |err| blk: { |
| 745 | | log.debug("MachO Zld new_digest={s} error: {s}", .{ |
| 746 | | std.fmt.fmtSliceHexLower(&digest), |
| 747 | | @errorName(err), |
| 748 | | }); |
| 749 | | // Handle this as a cache miss. |
| 750 | | break :blk prev_digest_buf[0..0]; |
| 751 | | }; |
| 752 | | if (mem.eql(u8, prev_digest, &digest)) { |
| 753 | | // Hot diggity dog! The output binary is already there. |
| 754 | | log.debug("MachO Zld digest={s} match - skipping invocation", .{ |
| 755 | | std.fmt.fmtSliceHexLower(&digest), |
| 756 | | }); |
| 757 | | self.base.lock = man.toOwnedLock(); |
| 758 | | return; |
| 759 | | } |
| 760 | | log.debug("MachO Zld prev_digest={s} new_digest={s}", .{ |
| 761 | | std.fmt.fmtSliceHexLower(prev_digest), |
| 762 | | std.fmt.fmtSliceHexLower(&digest), |
| 763 | | }); |
| 764 | | |
| 765 | | // We are about to change the output file to be different, so we invalidate the build hash now. |
| 766 | | directory.handle.deleteFile(id_symlink_basename) catch |err| switch (err) { |
| 767 | | error.FileNotFound => {}, |
| 768 | | else => |e| return e, |
| 769 | | }; |
| 770 | | } |
| 771 | | |
| 772 | | if (self.base.options.output_mode == .Obj) { |
| 773 | | // LLD's MachO driver does not support the equivalent of `-r` so we do a simple file copy |
| 774 | | // here. TODO: think carefully about how we can avoid this redundant operation when doing |
| 775 | | // build-obj. See also the corresponding TODO in linkAsArchive. |
| 776 | | const the_object_path = blk: { |
| 777 | | if (self.base.options.objects.len != 0) { |
| 778 | | break :blk self.base.options.objects[0].path; |
| 779 | | } |
| 780 | | |
| 781 | | if (comp.c_object_table.count() != 0) |
| 782 | | break :blk comp.c_object_table.keys()[0].status.success.object_path; |
| 783 | | |
| 784 | | if (module_obj_path) |p| |
| 785 | | break :blk p; |
| 786 | | |
| 787 | | // TODO I think this is unreachable. Audit this situation when solving the above TODO |
| 788 | | // regarding eliding redundant object -> object transformations. |
| 789 | | return error.NoObjectsToLink; |
| 790 | | }; |
| 791 | | // This can happen when using --enable-cache and using the stage1 backend. In this case |
| 792 | | // we can skip the file copy. |
| 793 | | if (!mem.eql(u8, the_object_path, full_out_path)) { |
| 794 | | try fs.cwd().copyFile(the_object_path, fs.cwd(), full_out_path, .{}); |
| 795 | | } |
| 796 | | } else { |
| 797 | | const sub_path = self.base.options.emit.?.sub_path; |
| 798 | | if (self.base.file == null) { |
| 799 | | self.base.file = try directory.handle.createFile(sub_path, .{ |
| 800 | | .truncate = true, |
| 801 | | .read = true, |
| 802 | | .mode = link.determineMode(self.base.options), |
| 803 | | }); |
| 804 | | } |
| 805 | | // Index 0 is always a null symbol. |
| 806 | | try self.locals.append(gpa, .{ |
| 807 | | .n_strx = 0, |
| 808 | | .n_type = 0, |
| 809 | | .n_sect = 0, |
| 810 | | .n_desc = 0, |
| 811 | | .n_value = 0, |
| 812 | | }); |
| 813 | | try self.strtab.buffer.append(gpa, 0); |
| 814 | | try self.populateMissingMetadata(); |
| 815 | | |
| 816 | | var lib_not_found = false; |
| 817 | | var framework_not_found = false; |
| 818 | | |
| 819 | | // Positional arguments to the linker such as object files and static archives. |
| 820 | | var positionals = std.ArrayList([]const u8).init(arena); |
| 821 | | try positionals.ensureUnusedCapacity(self.base.options.objects.len); |
| 822 | | |
| 823 | | var must_link_archives = std.StringArrayHashMap(void).init(arena); |
| 824 | | try must_link_archives.ensureUnusedCapacity(self.base.options.objects.len); |
| 825 | | |
| 826 | | for (self.base.options.objects) |obj| { |
| 827 | | if (must_link_archives.contains(obj.path)) continue; |
| 828 | | if (obj.must_link) { |
| 829 | | _ = must_link_archives.getOrPutAssumeCapacity(obj.path); |
| 830 | | } else { |
| 831 | | _ = positionals.appendAssumeCapacity(obj.path); |
| 832 | | } |
| 833 | | } |
| 834 | | |
| 835 | | for (comp.c_object_table.keys()) |key| { |
| 836 | | try positionals.append(key.status.success.object_path); |
| 837 | | } |
| 838 | | |
| 839 | | if (module_obj_path) |p| { |
| 840 | | try positionals.append(p); |
| 841 | | } |
| 842 | | |
| 843 | | if (comp.compiler_rt_lib) |lib| { |
| 844 | | try positionals.append(lib.full_object_path); |
| 845 | | } |
| 846 | | |
| 847 | | // libc++ dep |
| 848 | | if (self.base.options.link_libcpp) { |
| 849 | | try positionals.append(comp.libcxxabi_static_lib.?.full_object_path); |
| 850 | | try positionals.append(comp.libcxx_static_lib.?.full_object_path); |
| 851 | | } |
| 852 | | |
| 853 | | // Shared and static libraries passed via `-l` flag. |
| 854 | | var candidate_libs = std.StringArrayHashMap(SystemLib).init(arena); |
| 855 | | |
| 856 | | const system_lib_names = self.base.options.system_libs.keys(); |
| 857 | | for (system_lib_names) |system_lib_name| { |
| 858 | | // By this time, we depend on these libs being dynamically linked libraries and not static libraries |
| 859 | | // (the check for that needs to be earlier), but they could be full paths to .dylib files, in which |
| 860 | | // case we want to avoid prepending "-l". |
| 861 | | if (Compilation.classifyFileExt(system_lib_name) == .shared_library) { |
| 862 | | try positionals.append(system_lib_name); |
| 863 | | continue; |
| 864 | | } |
| 865 | | |
| 866 | | const system_lib_info = self.base.options.system_libs.get(system_lib_name).?; |
| 867 | | try candidate_libs.put(system_lib_name, .{ |
| 868 | | .needed = system_lib_info.needed, |
| 869 | | .weak = system_lib_info.weak, |
| 870 | | }); |
| 871 | | } |
| 872 | | |
| 873 | | var lib_dirs = std.ArrayList([]const u8).init(arena); |
| 874 | | for (self.base.options.lib_dirs) |dir| { |
| 875 | | if (try resolveSearchDir(arena, dir, self.base.options.sysroot)) |search_dir| { |
| 876 | | try lib_dirs.append(search_dir); |
| 877 | | } else { |
| 878 | | log.warn("directory not found for '-L{s}'", .{dir}); |
| 879 | | } |
| 880 | | } |
| 881 | | |
| 882 | | var libs = std.StringArrayHashMap(SystemLib).init(arena); |
| 883 | | |
| 884 | | // Assume ld64 default -search_paths_first if no strategy specified. |
| 885 | | const search_strategy = self.base.options.search_strategy orelse .paths_first; |
| 886 | | outer: for (candidate_libs.keys()) |lib_name| { |
| 887 | | switch (search_strategy) { |
| 888 | | .paths_first => { |
| 889 | | // Look in each directory for a dylib (stub first), and then for archive |
| 890 | | for (lib_dirs.items) |dir| { |
| 891 | | for (&[_][]const u8{ ".tbd", ".dylib", ".a" }) |ext| { |
| 892 | | if (try resolveLib(arena, dir, lib_name, ext)) |full_path| { |
| 893 | | try libs.put(full_path, candidate_libs.get(lib_name).?); |
| 894 | | continue :outer; |
| 895 | | } |
| 896 | | } |
| 897 | | } else { |
| 898 | | log.warn("library not found for '-l{s}'", .{lib_name}); |
| 899 | | lib_not_found = true; |
| 900 | | } |
| 901 | | }, |
| 902 | | .dylibs_first => { |
| 903 | | // First, look for a dylib in each search dir |
| 904 | | for (lib_dirs.items) |dir| { |
| 905 | | for (&[_][]const u8{ ".tbd", ".dylib" }) |ext| { |
| 906 | | if (try resolveLib(arena, dir, lib_name, ext)) |full_path| { |
| 907 | | try libs.put(full_path, candidate_libs.get(lib_name).?); |
| 908 | | continue :outer; |
| 909 | | } |
| 910 | | } |
| 911 | | } else for (lib_dirs.items) |dir| { |
| 912 | | if (try resolveLib(arena, dir, lib_name, ".a")) |full_path| { |
| 913 | | try libs.put(full_path, candidate_libs.get(lib_name).?); |
| 914 | | } else { |
| 915 | | log.warn("library not found for '-l{s}'", .{lib_name}); |
| 916 | | lib_not_found = true; |
| 917 | | } |
| 918 | | } |
| 919 | | }, |
| 920 | | } |
| 921 | | } |
| 922 | | |
| 923 | | if (lib_not_found) { |
| 924 | | log.warn("Library search paths:", .{}); |
| 925 | | for (lib_dirs.items) |dir| { |
| 926 | | log.warn(" {s}", .{dir}); |
| 927 | | } |
| 928 | | } |
| 929 | | |
| 930 | | try self.resolveLibSystem(arena, comp, lib_dirs.items, &libs); |
| 931 | | |
| 932 | | // frameworks |
| 933 | | var framework_dirs = std.ArrayList([]const u8).init(arena); |
| 934 | | for (self.base.options.framework_dirs) |dir| { |
| 935 | | if (try resolveSearchDir(arena, dir, self.base.options.sysroot)) |search_dir| { |
| 936 | | try framework_dirs.append(search_dir); |
| 937 | | } else { |
| 938 | | log.warn("directory not found for '-F{s}'", .{dir}); |
| 939 | | } |
| 940 | | } |
| 941 | | |
| 942 | | outer: for (self.base.options.frameworks.keys()) |f_name| { |
| 943 | | for (framework_dirs.items) |dir| { |
| 944 | | for (&[_][]const u8{ ".tbd", ".dylib", "" }) |ext| { |
| 945 | | if (try resolveFramework(arena, dir, f_name, ext)) |full_path| { |
| 946 | | const info = self.base.options.frameworks.get(f_name).?; |
| 947 | | try libs.put(full_path, .{ |
| 948 | | .needed = info.needed, |
| 949 | | .weak = info.weak, |
| 950 | | }); |
| 951 | | continue :outer; |
| 952 | | } |
| 953 | | } |
| 954 | | } else { |
| 955 | | log.warn("framework not found for '-framework {s}'", .{f_name}); |
| 956 | | framework_not_found = true; |
| 957 | | } |
| 958 | | } |
| 959 | | |
| 960 | | if (framework_not_found) { |
| 961 | | log.warn("Framework search paths:", .{}); |
| 962 | | for (framework_dirs.items) |dir| { |
| 963 | | log.warn(" {s}", .{dir}); |
| 964 | | } |
| 965 | | } |
| 966 | | |
| 967 | | if (self.base.options.verbose_link) { |
| 968 | | var argv = std.ArrayList([]const u8).init(arena); |
| 969 | | |
| 970 | | try argv.append("zig"); |
| 971 | | try argv.append("ld"); |
| 972 | | |
| 973 | | if (is_exe_or_dyn_lib) { |
| 974 | | try argv.append("-dynamic"); |
| 975 | | } |
| 976 | | |
| 977 | | if (is_dyn_lib) { |
| 978 | | try argv.append("-dylib"); |
| 979 | | |
| 980 | | if (self.base.options.install_name) |install_name| { |
| 981 | | try argv.append("-install_name"); |
| 982 | | try argv.append(install_name); |
| 983 | | } |
| 984 | | } |
| 985 | | |
| 986 | | if (self.base.options.sysroot) |syslibroot| { |
| 987 | | try argv.append("-syslibroot"); |
| 988 | | try argv.append(syslibroot); |
| 989 | | } |
| 990 | | |
| 991 | | for (self.base.options.rpath_list) |rpath| { |
| 992 | | try argv.append("-rpath"); |
| 993 | | try argv.append(rpath); |
| 994 | | } |
| 995 | | |
| 996 | | if (self.base.options.pagezero_size) |pagezero_size| { |
| 997 | | try argv.append("-pagezero_size"); |
| 998 | | try argv.append(try std.fmt.allocPrint(arena, "0x{x}", .{pagezero_size})); |
| 999 | | } |
| 1000 | | |
| 1001 | | if (self.base.options.search_strategy) |strat| switch (strat) { |
| 1002 | | .paths_first => try argv.append("-search_paths_first"), |
| 1003 | | .dylibs_first => try argv.append("-search_dylibs_first"), |
| 1004 | | }; |
| 1005 | | |
| 1006 | | if (self.base.options.headerpad_size) |headerpad_size| { |
| 1007 | | try argv.append("-headerpad_size"); |
| 1008 | | try argv.append(try std.fmt.allocPrint(arena, "0x{x}", .{headerpad_size})); |
| 1009 | | } |
| 1010 | | |
| 1011 | | if (self.base.options.headerpad_max_install_names) { |
| 1012 | | try argv.append("-headerpad_max_install_names"); |
| 1013 | | } |
| 1014 | | |
| 1015 | | if (gc_sections) { |
| 1016 | | try argv.append("-dead_strip"); |
| 1017 | | } |
| 1018 | | |
| 1019 | | if (self.base.options.dead_strip_dylibs) { |
| 1020 | | try argv.append("-dead_strip_dylibs"); |
| 1021 | | } |
| 1022 | | |
| 1023 | | if (self.base.options.entry) |entry| { |
| 1024 | | try argv.append("-e"); |
| 1025 | | try argv.append(entry); |
| 1026 | | } |
| 1027 | | |
| 1028 | | for (self.base.options.objects) |obj| { |
| 1029 | | try argv.append(obj.path); |
| 1030 | | } |
| 1031 | | |
| 1032 | | for (comp.c_object_table.keys()) |key| { |
| 1033 | | try argv.append(key.status.success.object_path); |
| 1034 | | } |
| 1035 | | |
| 1036 | | if (module_obj_path) |p| { |
| 1037 | | try argv.append(p); |
| 1038 | | } |
| 1039 | | |
| 1040 | | if (comp.compiler_rt_lib) |lib| { |
| 1041 | | try argv.append(lib.full_object_path); |
| 1042 | | } |
| 1043 | | |
| 1044 | | if (self.base.options.link_libcpp) { |
| 1045 | | try argv.append(comp.libcxxabi_static_lib.?.full_object_path); |
| 1046 | | try argv.append(comp.libcxx_static_lib.?.full_object_path); |
| 1047 | | } |
| 1048 | | |
| 1049 | | try argv.append("-o"); |
| 1050 | | try argv.append(full_out_path); |
| 1051 | | |
| 1052 | | try argv.append("-lSystem"); |
| 1053 | | try argv.append("-lc"); |
| 1054 | | |
| 1055 | | for (self.base.options.system_libs.keys()) |l_name| { |
| 1056 | | const info = self.base.options.system_libs.get(l_name).?; |
| 1057 | | const arg = if (info.needed) |
| 1058 | | try std.fmt.allocPrint(arena, "-needed-l{s}", .{l_name}) |
| 1059 | | else if (info.weak) |
| 1060 | | try std.fmt.allocPrint(arena, "-weak-l{s}", .{l_name}) |
| 1061 | | else |
| 1062 | | try std.fmt.allocPrint(arena, "-l{s}", .{l_name}); |
| 1063 | | try argv.append(arg); |
| 1064 | | } |
| 1065 | | |
| 1066 | | for (self.base.options.lib_dirs) |lib_dir| { |
| 1067 | | try argv.append(try std.fmt.allocPrint(arena, "-L{s}", .{lib_dir})); |
| 1068 | | } |
| 1069 | | |
| 1070 | | for (self.base.options.frameworks.keys()) |framework| { |
| 1071 | | const info = self.base.options.frameworks.get(framework).?; |
| 1072 | | const arg = if (info.needed) |
| 1073 | | try std.fmt.allocPrint(arena, "-needed_framework {s}", .{framework}) |
| 1074 | | else if (info.weak) |
| 1075 | | try std.fmt.allocPrint(arena, "-weak_framework {s}", .{framework}) |
| 1076 | | else |
| 1077 | | try std.fmt.allocPrint(arena, "-framework {s}", .{framework}); |
| 1078 | | try argv.append(arg); |
| 1079 | | } |
| 1080 | | |
| 1081 | | for (self.base.options.framework_dirs) |framework_dir| { |
| 1082 | | try argv.append(try std.fmt.allocPrint(arena, "-F{s}", .{framework_dir})); |
| 1083 | | } |
| 1084 | | |
| 1085 | | if (is_dyn_lib and (self.base.options.allow_shlib_undefined orelse false)) { |
| 1086 | | try argv.append("-undefined"); |
| 1087 | | try argv.append("dynamic_lookup"); |
| 1088 | | } |
| 1089 | | |
| 1090 | | for (must_link_archives.keys()) |lib| { |
| 1091 | | try argv.append(try std.fmt.allocPrint(arena, "-force_load {s}", .{lib})); |
| 1092 | | } |
| 1093 | | |
| 1094 | | Compilation.dump_argv(argv.items); |
| 1095 | | } |
| 1096 | | |
| 1097 | | var dependent_libs = std.fifo.LinearFifo(struct { |
| 1098 | | id: Dylib.Id, |
| 1099 | | parent: u16, |
| 1100 | | }, .Dynamic).init(arena); |
| 1101 | | |
| 1102 | | try self.parseInputFiles(positionals.items, self.base.options.sysroot, &dependent_libs); |
| 1103 | | try self.parseAndForceLoadStaticArchives(must_link_archives.keys()); |
| 1104 | | try self.parseLibs(libs.keys(), libs.values(), self.base.options.sysroot, &dependent_libs); |
| 1105 | | try self.parseDependentLibs(self.base.options.sysroot, &dependent_libs); |
| 1106 | | |
| 1107 | | for (self.objects.items) |_, object_id| { |
| 1108 | | try self.resolveSymbolsInObject(@intCast(u16, object_id)); |
| 1109 | | } |
| 1110 | | |
| 1111 | | try self.resolveSymbolsInArchives(); |
| 1112 | | try self.resolveDyldStubBinder(); |
| 1113 | | try self.resolveSymbolsInDylibs(); |
| 1114 | | try self.createMhExecuteHeaderSymbol(); |
| 1115 | | try self.createDsoHandleSymbol(); |
| 1116 | | try self.resolveSymbolsAtLoading(); |
| 1117 | | |
| 1118 | | if (self.unresolved.count() > 0) { |
| 1119 | | return error.UndefinedSymbolReference; |
| 1120 | | } |
| 1121 | | if (lib_not_found) { |
| 1122 | | return error.LibraryNotFound; |
| 1123 | | } |
| 1124 | | if (framework_not_found) { |
| 1125 | | return error.FrameworkNotFound; |
| 1126 | | } |
| 1127 | | |
| 1128 | | for (self.objects.items) |*object| { |
| 1129 | | try object.scanInputSections(self); |
| 1130 | | } |
| 1131 | | |
| 1132 | | try self.createDyldPrivateAtom(); |
| 1133 | | try self.createTentativeDefAtoms(); |
| 1134 | | try self.createStubHelperPreambleAtom(); |
| 1135 | | |
| 1136 | | for (self.objects.items) |*object, object_id| { |
| 1137 | | try object.splitIntoAtomsOneShot(self, @intCast(u32, object_id)); |
| 1138 | | } |
| 1139 | | |
| 1140 | | if (gc_sections) { |
| 1141 | | try dead_strip.gcAtoms(self); |
| 1142 | | } |
| 1143 | | |
| 1144 | | try self.allocateSegments(); |
| 1145 | | try self.allocateSymbols(); |
| 1146 | | |
| 1147 | | try self.allocateSpecialSymbols(); |
| 1148 | | |
| 1149 | | if (build_options.enable_logging or true) { |
| 1150 | | self.logSymtab(); |
| 1151 | | self.logSections(); |
| 1152 | | self.logAtoms(); |
| 1153 | | } |
| 1154 | | |
| 1155 | | try self.writeAtomsOneShot(); |
| 1156 | | |
| 1157 | | var lc_buffer = std.ArrayList(u8).init(arena); |
| 1158 | | const lc_writer = lc_buffer.writer(); |
| 1159 | | var ncmds: u32 = 0; |
| 1160 | | |
| 1161 | | try self.writeLinkeditSegmentData(&ncmds, lc_writer); |
| 1162 | | |
| 1163 | | // If the last section of __DATA segment is zerofill section, we need to ensure |
| 1164 | | // that the free space between the end of the last non-zerofill section of __DATA |
| 1165 | | // segment and the beginning of __LINKEDIT segment is zerofilled as the loader will |
| 1166 | | // copy-paste this space into memory for quicker zerofill operation. |
| 1167 | | if (self.data_segment_cmd_index) |data_seg_id| blk: { |
| 1168 | | var physical_zerofill_start: u64 = 0; |
| 1169 | | const section_indexes = self.getSectionIndexes(data_seg_id); |
| 1170 | | for (self.sections.items(.header)[section_indexes.start..section_indexes.end]) |header| { |
| 1171 | | if (header.isZerofill() and header.size > 0) break; |
| 1172 | | physical_zerofill_start = header.offset + header.size; |
| 1173 | | } else break :blk; |
| 1174 | | const linkedit = self.segments.items[self.linkedit_segment_cmd_index.?]; |
| 1175 | | const physical_zerofill_size = math.cast(usize, linkedit.fileoff - physical_zerofill_start) orelse |
| 1176 | | return error.Overflow; |
| 1177 | | if (physical_zerofill_size > 0) { |
| 1178 | | var padding = try self.base.allocator.alloc(u8, physical_zerofill_size); |
| 1179 | | defer self.base.allocator.free(padding); |
| 1180 | | mem.set(u8, padding, 0); |
| 1181 | | try self.base.file.?.pwriteAll(padding, physical_zerofill_start); |
| 1182 | | } |
| 1183 | | } |
| 1184 | | |
| 1185 | | try writeDylinkerLC(&ncmds, lc_writer); |
| 1186 | | try self.writeMainLC(&ncmds, lc_writer); |
| 1187 | | try self.writeDylibIdLC(&ncmds, lc_writer); |
| 1188 | | try self.writeRpathLCs(&ncmds, lc_writer); |
| 1189 | | |
| 1190 | | { |
| 1191 | | try lc_writer.writeStruct(macho.source_version_command{ |
| 1192 | | .cmdsize = @sizeOf(macho.source_version_command), |
| 1193 | | .version = 0x0, |
| 1194 | | }); |
| 1195 | | ncmds += 1; |
| 1196 | | } |
| 1197 | | |
| 1198 | | try self.writeBuildVersionLC(&ncmds, lc_writer); |
| 1199 | | |
| 1200 | | { |
| 1201 | | var uuid_lc = macho.uuid_command{ |
| 1202 | | .cmdsize = @sizeOf(macho.uuid_command), |
| 1203 | | .uuid = undefined, |
| 1204 | | }; |
| 1205 | | std.crypto.random.bytes(&uuid_lc.uuid); |
| 1206 | | try lc_writer.writeStruct(uuid_lc); |
| 1207 | | ncmds += 1; |
| 1208 | | } |
| 1209 | | |
| 1210 | | try self.writeLoadDylibLCs(&ncmds, lc_writer); |
| 1211 | | |
| 1212 | | const requires_codesig = blk: { |
| 1213 | | if (self.base.options.entitlements) |_| break :blk true; |
| 1214 | | if (cpu_arch == .aarch64 and (os_tag == .macos or abi == .simulator)) break :blk true; |
| 1215 | | break :blk false; |
| 1216 | | }; |
| 1217 | | var codesig_offset: ?u32 = null; |
| 1218 | | var codesig: ?CodeSignature = if (requires_codesig) blk: { |
| 1219 | | // Preallocate space for the code signature. |
| 1220 | | // We need to do this at this stage so that we have the load commands with proper values |
| 1221 | | // written out to the file. |
| 1222 | | // The most important here is to have the correct vm and filesize of the __LINKEDIT segment |
| 1223 | | // where the code signature goes into. |
| 1224 | | var codesig = CodeSignature.init(self.page_size); |
| 1225 | | codesig.code_directory.ident = self.base.options.emit.?.sub_path; |
| 1226 | | if (self.base.options.entitlements) |path| { |
| 1227 | | try codesig.addEntitlements(arena, path); |
| 1228 | | } |
| 1229 | | codesig_offset = try self.writeCodeSignaturePadding(&codesig, &ncmds, lc_writer); |
| 1230 | | break :blk codesig; |
| 1231 | | } else null; |
| 1232 | | |
| 1233 | | var headers_buf = std.ArrayList(u8).init(arena); |
| 1234 | | try self.writeSegmentHeaders(&ncmds, headers_buf.writer()); |
| 1235 | | |
| 1236 | | try self.base.file.?.pwriteAll(headers_buf.items, @sizeOf(macho.mach_header_64)); |
| 1237 | | try self.base.file.?.pwriteAll(lc_buffer.items, @sizeOf(macho.mach_header_64) + headers_buf.items.len); |
| 1238 | | |
| 1239 | | try self.writeHeader(ncmds, @intCast(u32, lc_buffer.items.len + headers_buf.items.len)); |
| 1240 | | |
| 1241 | | if (codesig) |*csig| { |
| 1242 | | try self.writeCodeSignature(csig, codesig_offset.?); // code signing always comes last |
| 1243 | | } |
| 1244 | | } |
| 1245 | | |
| 1246 | | if (!self.base.options.disable_lld_caching) { |
| 1247 | | // Update the file with the digest. If it fails we can continue; it only |
| 1248 | | // means that the next invocation will have an unnecessary cache miss. |
| 1249 | | Cache.writeSmallFile(directory.handle, id_symlink_basename, &digest) catch |err| { |
| 1250 | | log.debug("failed to save linking hash digest file: {s}", .{@errorName(err)}); |
| 1251 | | }; |
| 1252 | | // Again failure here only means an unnecessary cache miss. |
| 1253 | | man.writeManifest() catch |err| { |
| 1254 | | log.debug("failed to write cache manifest when linking: {s}", .{@errorName(err)}); |
| 1255 | | }; |
| 1256 | | // We hang on to this lock so that the output file path can be used without |
| 1257 | | // other processes clobbering it. |
| 1258 | | self.base.lock = man.toOwnedLock(); |
| 1259 | | } |
| 1260 | | } |
| 1261 | | |
| 1262 | | fn resolveLibSystem( |
| 630 | pub fn resolveLibSystem( |
| 1263 | 631 | self: *MachO, |
| 1264 | 632 | arena: Allocator, |
| 1265 | 633 | comp: *Compilation, |
| ... | ... | @@ -1302,7 +670,7 @@ fn resolveLibSystem( |
| 1302 | 670 | } |
| 1303 | 671 | } |
| 1304 | 672 | |
| 1305 | | fn resolveSearchDir( |
| 673 | pub fn resolveSearchDir( |
| 1306 | 674 | arena: Allocator, |
| 1307 | 675 | dir: []const u8, |
| 1308 | 676 | syslibroot: ?[]const u8, |
| ... | ... | @@ -1344,17 +712,7 @@ fn resolveSearchDir( |
| 1344 | 712 | return null; |
| 1345 | 713 | } |
| 1346 | 714 | |
| 1347 | | fn resolveSearchDirs(arena: Allocator, dirs: []const []const u8, syslibroot: ?[]const u8, out_dirs: anytype) !void { |
| 1348 | | for (dirs) |dir| { |
| 1349 | | if (try resolveSearchDir(arena, dir, syslibroot)) |search_dir| { |
| 1350 | | try out_dirs.append(search_dir); |
| 1351 | | } else { |
| 1352 | | log.warn("directory not found for '-L{s}'", .{dir}); |
| 1353 | | } |
| 1354 | | } |
| 1355 | | } |
| 1356 | | |
| 1357 | | fn resolveLib( |
| 715 | pub fn resolveLib( |
| 1358 | 716 | arena: Allocator, |
| 1359 | 717 | search_dir: []const u8, |
| 1360 | 718 | name: []const u8, |
| ... | ... | @@ -1373,7 +731,7 @@ fn resolveLib( |
| 1373 | 731 | return full_path; |
| 1374 | 732 | } |
| 1375 | 733 | |
| 1376 | | fn resolveFramework( |
| 734 | pub fn resolveFramework( |
| 1377 | 735 | arena: Allocator, |
| 1378 | 736 | search_dir: []const u8, |
| 1379 | 737 | name: []const u8, |
| ... | ... | @@ -1583,7 +941,7 @@ pub fn parseDylib( |
| 1583 | 941 | return true; |
| 1584 | 942 | } |
| 1585 | 943 | |
| 1586 | | fn parseInputFiles(self: *MachO, files: []const []const u8, syslibroot: ?[]const u8, dependent_libs: anytype) !void { |
| 944 | pub fn parseInputFiles(self: *MachO, files: []const []const u8, syslibroot: ?[]const u8, dependent_libs: anytype) !void { |
| 1587 | 945 | for (files) |file_name| { |
| 1588 | 946 | const full_path = full_path: { |
| 1589 | 947 | var buffer: [fs.MAX_PATH_BYTES]u8 = undefined; |
| ... | ... | @@ -1601,7 +959,7 @@ fn parseInputFiles(self: *MachO, files: []const []const u8, syslibroot: ?[]const |
| 1601 | 959 | } |
| 1602 | 960 | } |
| 1603 | 961 | |
| 1604 | | fn parseAndForceLoadStaticArchives(self: *MachO, files: []const []const u8) !void { |
| 962 | pub fn parseAndForceLoadStaticArchives(self: *MachO, files: []const []const u8) !void { |
| 1605 | 963 | for (files) |file_name| { |
| 1606 | 964 | const full_path = full_path: { |
| 1607 | 965 | var buffer: [fs.MAX_PATH_BYTES]u8 = undefined; |
| ... | ... | @@ -1614,10 +972,10 @@ fn parseAndForceLoadStaticArchives(self: *MachO, files: []const []const u8) !voi |
| 1614 | 972 | } |
| 1615 | 973 | } |
| 1616 | 974 | |
| 1617 | | fn parseLibs( |
| 975 | pub fn parseLibs( |
| 1618 | 976 | self: *MachO, |
| 1619 | 977 | lib_names: []const []const u8, |
| 1620 | | lib_infos: []const SystemLib, |
| 978 | lib_infos: []const link.SystemLib, |
| 1621 | 979 | syslibroot: ?[]const u8, |
| 1622 | 980 | dependent_libs: anytype, |
| 1623 | 981 | ) !void { |
| ... | ... | @@ -1635,7 +993,7 @@ fn parseLibs( |
| 1635 | 993 | } |
| 1636 | 994 | } |
| 1637 | 995 | |
| 1638 | | fn parseDependentLibs(self: *MachO, syslibroot: ?[]const u8, dependent_libs: anytype) !void { |
| 996 | pub fn parseDependentLibs(self: *MachO, syslibroot: ?[]const u8, dependent_libs: anytype) !void { |
| 1639 | 997 | // At this point, we can now parse dependents of dylibs preserving the inclusion order of: |
| 1640 | 998 | // 1) anything on the linker line is parsed first |
| 1641 | 999 | // 2) afterwards, we parse dependents of the included dylibs |
| ... | ... | @@ -1935,55 +1293,7 @@ pub fn writeAtom(self: *MachO, atom: *Atom, sect_id: u8) !void { |
| 1935 | 1293 | // } |
| 1936 | 1294 | // } |
| 1937 | 1295 | |
| 1938 | | fn allocateSymbols(self: *MachO) !void { |
| 1939 | | const slice = self.sections.slice(); |
| 1940 | | for (slice.items(.last_atom)) |last_atom, sect_id| { |
| 1941 | | const header = slice.items(.header)[sect_id]; |
| 1942 | | var atom = last_atom orelse continue; |
| 1943 | | |
| 1944 | | while (atom.prev) |prev| { |
| 1945 | | atom = prev; |
| 1946 | | } |
| 1947 | | |
| 1948 | | const n_sect = @intCast(u8, sect_id + 1); |
| 1949 | | var base_vaddr = header.addr; |
| 1950 | | |
| 1951 | | log.debug("allocating local symbols in sect({d}, '{s},{s}')", .{ |
| 1952 | | n_sect, |
| 1953 | | header.segName(), |
| 1954 | | header.sectName(), |
| 1955 | | }); |
| 1956 | | |
| 1957 | | while (true) { |
| 1958 | | const alignment = try math.powi(u32, 2, atom.alignment); |
| 1959 | | base_vaddr = mem.alignForwardGeneric(u64, base_vaddr, alignment); |
| 1960 | | |
| 1961 | | const sym = atom.getSymbolPtr(self); |
| 1962 | | sym.n_value = base_vaddr; |
| 1963 | | sym.n_sect = n_sect; |
| 1964 | | |
| 1965 | | log.debug(" ATOM(%{d}, '{s}') @{x}", .{ atom.sym_index, atom.getName(self), base_vaddr }); |
| 1966 | | |
| 1967 | | // Update each symbol contained within the atom |
| 1968 | | for (atom.contained.items) |sym_at_off| { |
| 1969 | | const contained_sym = self.getSymbolPtr(.{ |
| 1970 | | .sym_index = sym_at_off.sym_index, |
| 1971 | | .file = atom.file, |
| 1972 | | }); |
| 1973 | | contained_sym.n_value = base_vaddr + sym_at_off.offset; |
| 1974 | | contained_sym.n_sect = n_sect; |
| 1975 | | } |
| 1976 | | |
| 1977 | | base_vaddr += atom.size; |
| 1978 | | |
| 1979 | | if (atom.next) |next| { |
| 1980 | | atom = next; |
| 1981 | | } else break; |
| 1982 | | } |
| 1983 | | } |
| 1984 | | } |
| 1985 | | |
| 1986 | | fn allocateSpecialSymbols(self: *MachO) !void { |
| 1296 | pub fn allocateSpecialSymbols(self: *MachO) !void { |
| 1987 | 1297 | for (&[_][]const u8{ |
| 1988 | 1298 | "___dso_handle", |
| 1989 | 1299 | "__mh_execute_header", |
| ... | ... | @@ -2002,96 +1312,7 @@ fn allocateSpecialSymbols(self: *MachO) !void { |
| 2002 | 1312 | } |
| 2003 | 1313 | } |
| 2004 | 1314 | |
| 2005 | | fn writeAtomsOneShot(self: *MachO) !void { |
| 2006 | | assert(self.mode == .one_shot); |
| 2007 | | |
| 2008 | | const gpa = self.base.allocator; |
| 2009 | | const slice = self.sections.slice(); |
| 2010 | | |
| 2011 | | for (slice.items(.last_atom)) |last_atom, sect_id| { |
| 2012 | | const header = slice.items(.header)[sect_id]; |
| 2013 | | if (header.size == 0) continue; |
| 2014 | | var atom = last_atom.?; |
| 2015 | | |
| 2016 | | if (header.isZerofill()) continue; |
| 2017 | | |
| 2018 | | var buffer = std.ArrayList(u8).init(gpa); |
| 2019 | | defer buffer.deinit(); |
| 2020 | | try buffer.ensureTotalCapacity(math.cast(usize, header.size) orelse return error.Overflow); |
| 2021 | | |
| 2022 | | log.debug("writing atoms in {s},{s}", .{ header.segName(), header.sectName() }); |
| 2023 | | |
| 2024 | | while (atom.prev) |prev| { |
| 2025 | | atom = prev; |
| 2026 | | } |
| 2027 | | |
| 2028 | | while (true) { |
| 2029 | | const this_sym = atom.getSymbol(self); |
| 2030 | | const padding_size: usize = if (atom.next) |next| blk: { |
| 2031 | | const next_sym = next.getSymbol(self); |
| 2032 | | const size = next_sym.n_value - (this_sym.n_value + atom.size); |
| 2033 | | break :blk math.cast(usize, size) orelse return error.Overflow; |
| 2034 | | } else 0; |
| 2035 | | |
| 2036 | | log.debug(" (adding ATOM(%{d}, '{s}') from object({?d}) to buffer)", .{ |
| 2037 | | atom.sym_index, |
| 2038 | | atom.getName(self), |
| 2039 | | atom.file, |
| 2040 | | }); |
| 2041 | | if (padding_size > 0) { |
| 2042 | | log.debug(" (with padding {x})", .{padding_size}); |
| 2043 | | } |
| 2044 | | |
| 2045 | | try atom.resolveRelocs(self); |
| 2046 | | buffer.appendSliceAssumeCapacity(atom.code.items); |
| 2047 | | |
| 2048 | | var i: usize = 0; |
| 2049 | | while (i < padding_size) : (i += 1) { |
| 2050 | | // TODO with NOPs |
| 2051 | | buffer.appendAssumeCapacity(0); |
| 2052 | | } |
| 2053 | | |
| 2054 | | if (atom.next) |next| { |
| 2055 | | atom = next; |
| 2056 | | } else { |
| 2057 | | assert(buffer.items.len == header.size); |
| 2058 | | log.debug(" (writing at file offset 0x{x})", .{header.offset}); |
| 2059 | | try self.base.file.?.pwriteAll(buffer.items, header.offset); |
| 2060 | | break; |
| 2061 | | } |
| 2062 | | } |
| 2063 | | } |
| 2064 | | } |
| 2065 | | |
| 2066 | | fn writePadding(self: *MachO, sect_id: u8, size: usize, writer: anytype) !void { |
| 2067 | | const header = self.sections.items(.header)[sect_id]; |
| 2068 | | const min_alignment: u3 = if (!header.isCode()) |
| 2069 | | 1 |
| 2070 | | else switch (self.base.options.target.cpu.arch) { |
| 2071 | | .aarch64 => @sizeOf(u32), |
| 2072 | | .x86_64 => @as(u3, 1), |
| 2073 | | else => unreachable, |
| 2074 | | }; |
| 2075 | | |
| 2076 | | const len = @divExact(size, min_alignment); |
| 2077 | | var i: usize = 0; |
| 2078 | | while (i < len) : (i += 1) { |
| 2079 | | if (!header.isCode()) { |
| 2080 | | try writer.writeByte(0); |
| 2081 | | } else switch (self.base.options.target.cpu.arch) { |
| 2082 | | .aarch64 => { |
| 2083 | | const inst = aarch64.Instruction.nop(); |
| 2084 | | try writer.writeIntLittle(u32, inst.toU32()); |
| 2085 | | }, |
| 2086 | | .x86_64 => { |
| 2087 | | try writer.writeByte(0x90); |
| 2088 | | }, |
| 2089 | | else => unreachable, |
| 2090 | | } |
| 2091 | | } |
| 2092 | | } |
| 2093 | | |
| 2094 | | fn writeAtomsIncremental(self: *MachO) !void { |
| 1315 | fn writeAtoms(self: *MachO) !void { |
| 2095 | 1316 | assert(self.mode == .incremental); |
| 2096 | 1317 | |
| 2097 | 1318 | const slice = self.sections.slice(); |
| ... | ... | @@ -2186,7 +1407,7 @@ pub fn createTlvPtrAtom(self: *MachO, target: SymbolWithLoc) !*Atom { |
| 2186 | 1407 | return atom; |
| 2187 | 1408 | } |
| 2188 | 1409 | |
| 2189 | | fn createDyldPrivateAtom(self: *MachO) !void { |
| 1410 | pub fn createDyldPrivateAtom(self: *MachO) !void { |
| 2190 | 1411 | if (self.dyld_stub_binder_index == null) return; |
| 2191 | 1412 | if (self.dyld_private_atom != null) return; |
| 2192 | 1413 | |
| ... | ... | @@ -2203,7 +1424,7 @@ fn createDyldPrivateAtom(self: *MachO) !void { |
| 2203 | 1424 | try self.atom_by_index_table.putNoClobber(gpa, sym_index, atom); |
| 2204 | 1425 | } |
| 2205 | 1426 | |
| 2206 | | fn createStubHelperPreambleAtom(self: *MachO) !void { |
| 1427 | pub fn createStubHelperPreambleAtom(self: *MachO) !void { |
| 2207 | 1428 | if (self.dyld_stub_binder_index == null) return; |
| 2208 | 1429 | if (self.stub_helper_preamble_atom != null) return; |
| 2209 | 1430 | |
| ... | ... | @@ -2509,7 +1730,7 @@ pub fn createStubAtom(self: *MachO, laptr_sym_index: u32) !*Atom { |
| 2509 | 1730 | return atom; |
| 2510 | 1731 | } |
| 2511 | 1732 | |
| 2512 | | fn createTentativeDefAtoms(self: *MachO) !void { |
| 1733 | pub fn createTentativeDefAtoms(self: *MachO) !void { |
| 2513 | 1734 | const gpa = self.base.allocator; |
| 2514 | 1735 | |
| 2515 | 1736 | for (self.globals.items) |global| { |
| ... | ... | @@ -2554,7 +1775,7 @@ fn createTentativeDefAtoms(self: *MachO) !void { |
| 2554 | 1775 | } |
| 2555 | 1776 | } |
| 2556 | 1777 | |
| 2557 | | fn createMhExecuteHeaderSymbol(self: *MachO) !void { |
| 1778 | pub fn createMhExecuteHeaderSymbol(self: *MachO) !void { |
| 2558 | 1779 | if (self.base.options.output_mode != .Exe) return; |
| 2559 | 1780 | if (self.getGlobal("__mh_execute_header")) |global| { |
| 2560 | 1781 | const sym = self.getSymbol(global); |
| ... | ... | @@ -2577,7 +1798,7 @@ fn createMhExecuteHeaderSymbol(self: *MachO) !void { |
| 2577 | 1798 | gop.value_ptr.* = sym_loc; |
| 2578 | 1799 | } |
| 2579 | 1800 | |
| 2580 | | fn createDsoHandleSymbol(self: *MachO) !void { |
| 1801 | pub fn createDsoHandleSymbol(self: *MachO) !void { |
| 2581 | 1802 | const global = self.getGlobalPtr("___dso_handle") orelse return; |
| 2582 | 1803 | if (!self.getSymbol(global.*).undf()) return; |
| 2583 | 1804 | |
| ... | ... | @@ -2652,7 +1873,7 @@ fn resolveGlobalSymbol(self: *MachO, current: SymbolWithLoc) !void { |
| 2652 | 1873 | gop.value_ptr.* = current; |
| 2653 | 1874 | } |
| 2654 | 1875 | |
| 2655 | | fn resolveSymbolsInObject(self: *MachO, object_id: u16) !void { |
| 1876 | pub fn resolveSymbolsInObject(self: *MachO, object_id: u16) !void { |
| 2656 | 1877 | const object = &self.objects.items[object_id]; |
| 2657 | 1878 | log.debug("resolving symbols in '{s}'", .{object.name}); |
| 2658 | 1879 | |
| ... | ... | @@ -2705,7 +1926,7 @@ fn resolveSymbolsInObject(self: *MachO, object_id: u16) !void { |
| 2705 | 1926 | } |
| 2706 | 1927 | } |
| 2707 | 1928 | |
| 2708 | | fn resolveSymbolsInArchives(self: *MachO) !void { |
| 1929 | pub fn resolveSymbolsInArchives(self: *MachO) !void { |
| 2709 | 1930 | if (self.archives.items.len == 0) return; |
| 2710 | 1931 | |
| 2711 | 1932 | const gpa = self.base.allocator; |
| ... | ... | @@ -2736,7 +1957,7 @@ fn resolveSymbolsInArchives(self: *MachO) !void { |
| 2736 | 1957 | } |
| 2737 | 1958 | } |
| 2738 | 1959 | |
| 2739 | | fn resolveSymbolsInDylibs(self: *MachO) !void { |
| 1960 | pub fn resolveSymbolsInDylibs(self: *MachO) !void { |
| 2740 | 1961 | if (self.dylibs.items.len == 0) return; |
| 2741 | 1962 | |
| 2742 | 1963 | const gpa = self.base.allocator; |
| ... | ... | @@ -2782,7 +2003,7 @@ fn resolveSymbolsInDylibs(self: *MachO) !void { |
| 2782 | 2003 | } |
| 2783 | 2004 | } |
| 2784 | 2005 | |
| 2785 | | fn resolveSymbolsAtLoading(self: *MachO) !void { |
| 2006 | pub fn resolveSymbolsAtLoading(self: *MachO) !void { |
| 2786 | 2007 | const is_lib = self.base.options.output_mode == .Lib; |
| 2787 | 2008 | const is_dyn_lib = self.base.options.link_mode == .Dynamic and is_lib; |
| 2788 | 2009 | const allow_undef = is_dyn_lib and (self.base.options.allow_shlib_undefined orelse false); |
| ... | ... | @@ -2825,7 +2046,7 @@ fn resolveSymbolsAtLoading(self: *MachO) !void { |
| 2825 | 2046 | } |
| 2826 | 2047 | } |
| 2827 | 2048 | |
| 2828 | | fn resolveDyldStubBinder(self: *MachO) !void { |
| 2049 | pub fn resolveDyldStubBinder(self: *MachO) !void { |
| 2829 | 2050 | if (self.dyld_stub_binder_index != null) return; |
| 2830 | 2051 | if (self.unresolved.count() == 0) return; // no need for a stub binder if we don't have any imports |
| 2831 | 2052 | |
| ... | ... | @@ -2872,7 +2093,7 @@ fn resolveDyldStubBinder(self: *MachO) !void { |
| 2872 | 2093 | self.got_entries.items[got_index].sym_index = got_atom.sym_index; |
| 2873 | 2094 | } |
| 2874 | 2095 | |
| 2875 | | fn writeDylinkerLC(ncmds: *u32, lc_writer: anytype) !void { |
| 2096 | pub fn writeDylinkerLC(ncmds: *u32, lc_writer: anytype) !void { |
| 2876 | 2097 | const name_len = mem.sliceTo(default_dyld_path, 0).len; |
| 2877 | 2098 | const cmdsize = @intCast(u32, mem.alignForwardGeneric( |
| 2878 | 2099 | u64, |
| ... | ... | @@ -2892,7 +2113,7 @@ fn writeDylinkerLC(ncmds: *u32, lc_writer: anytype) !void { |
| 2892 | 2113 | ncmds.* += 1; |
| 2893 | 2114 | } |
| 2894 | 2115 | |
| 2895 | | fn writeMainLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2116 | pub fn writeMainLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2896 | 2117 | if (self.base.options.output_mode != .Exe) return; |
| 2897 | 2118 | const seg = self.segments.items[self.text_segment_cmd_index.?]; |
| 2898 | 2119 | const global = try self.getEntryPoint(); |
| ... | ... | @@ -2914,7 +2135,7 @@ const WriteDylibLCCtx = struct { |
| 2914 | 2135 | compatibility_version: u32 = 0x10000, |
| 2915 | 2136 | }; |
| 2916 | 2137 | |
| 2917 | | fn writeDylibLC(ctx: WriteDylibLCCtx, ncmds: *u32, lc_writer: anytype) !void { |
| 2138 | pub fn writeDylibLC(ctx: WriteDylibLCCtx, ncmds: *u32, lc_writer: anytype) !void { |
| 2918 | 2139 | const name_len = ctx.name.len + 1; |
| 2919 | 2140 | const cmdsize = @intCast(u32, mem.alignForwardGeneric( |
| 2920 | 2141 | u64, |
| ... | ... | @@ -2940,7 +2161,7 @@ fn writeDylibLC(ctx: WriteDylibLCCtx, ncmds: *u32, lc_writer: anytype) !void { |
| 2940 | 2161 | ncmds.* += 1; |
| 2941 | 2162 | } |
| 2942 | 2163 | |
| 2943 | | fn writeDylibIdLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2164 | pub fn writeDylibIdLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2944 | 2165 | if (self.base.options.output_mode != .Lib) return; |
| 2945 | 2166 | const install_name = self.base.options.install_name orelse self.base.options.emit.?.sub_path; |
| 2946 | 2167 | const curr = self.base.options.version orelse std.builtin.Version{ |
| ... | ... | @@ -2986,7 +2207,7 @@ const RpathIterator = struct { |
| 2986 | 2207 | } |
| 2987 | 2208 | }; |
| 2988 | 2209 | |
| 2989 | | fn writeRpathLCs(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2210 | pub fn writeRpathLCs(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2990 | 2211 | const gpa = self.base.allocator; |
| 2991 | 2212 | |
| 2992 | 2213 | var it = RpathIterator.init(gpa, self.base.options.rpath_list); |
| ... | ... | @@ -3013,7 +2234,7 @@ fn writeRpathLCs(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 3013 | 2234 | } |
| 3014 | 2235 | } |
| 3015 | 2236 | |
| 3016 | | fn writeBuildVersionLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2237 | pub fn writeBuildVersionLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 3017 | 2238 | const cmdsize = @sizeOf(macho.build_version_command) + @sizeOf(macho.build_tool_version); |
| 3018 | 2239 | const platform_version = blk: { |
| 3019 | 2240 | const ver = self.base.options.target.os.version_range.semver.min; |
| ... | ... | @@ -3046,7 +2267,7 @@ fn writeBuildVersionLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 3046 | 2267 | ncmds.* += 1; |
| 3047 | 2268 | } |
| 3048 | 2269 | |
| 3049 | | fn writeLoadDylibLCs(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 2270 | pub fn writeLoadDylibLCs(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 3050 | 2271 | for (self.referenced_dylibs.keys()) |id| { |
| 3051 | 2272 | const dylib = self.dylibs.items[id]; |
| 3052 | 2273 | const dylib_id = dylib.id orelse unreachable; |
| ... | ... | @@ -4035,7 +3256,7 @@ pub fn getDeclVAddr(self: *MachO, decl_index: Module.Decl.Index, reloc_info: Fil |
| 4035 | 3256 | return 0; |
| 4036 | 3257 | } |
| 4037 | 3258 | |
| 4038 | | fn populateMissingMetadata(self: *MachO) !void { |
| 3259 | pub fn populateMissingMetadata(self: *MachO) !void { |
| 4039 | 3260 | const gpa = self.base.allocator; |
| 4040 | 3261 | const cpu_arch = self.base.options.target.cpu.arch; |
| 4041 | 3262 | const pagezero_vmsize = self.base.options.pagezero_size orelse default_pagezero_vmsize; |
| ... | ... | @@ -4367,7 +3588,7 @@ fn calcLCsSize(self: *MachO, assume_max_path_len: bool) !u32 { |
| 4367 | 3588 | return @intCast(u32, sizeofcmds); |
| 4368 | 3589 | } |
| 4369 | 3590 | |
| 4370 | | fn calcMinHeaderPad(self: *MachO) !u64 { |
| 3591 | pub fn calcMinHeaderPad(self: *MachO) !u64 { |
| 4371 | 3592 | var padding: u32 = (try self.calcLCsSize(false)) + (self.base.options.headerpad_size orelse 0); |
| 4372 | 3593 | log.debug("minimum requested headerpad size 0x{x}", .{padding + @sizeOf(macho.mach_header_64)}); |
| 4373 | 3594 | |
| ... | ... | @@ -4384,94 +3605,6 @@ fn calcMinHeaderPad(self: *MachO) !u64 { |
| 4384 | 3605 | return offset; |
| 4385 | 3606 | } |
| 4386 | 3607 | |
| 4387 | | fn allocateSegments(self: *MachO) !void { |
| 4388 | | try self.allocateSegment(self.text_segment_cmd_index, &.{ |
| 4389 | | self.pagezero_segment_cmd_index, |
| 4390 | | }, try self.calcMinHeaderPad()); |
| 4391 | | |
| 4392 | | if (self.text_segment_cmd_index) |index| blk: { |
| 4393 | | const indexes = self.getSectionIndexes(index); |
| 4394 | | if (indexes.start == indexes.end) break :blk; |
| 4395 | | const seg = self.segments.items[index]; |
| 4396 | | |
| 4397 | | // Shift all sections to the back to minimize jump size between __TEXT and __DATA segments. |
| 4398 | | var min_alignment: u32 = 0; |
| 4399 | | for (self.sections.items(.header)[indexes.start..indexes.end]) |header| { |
| 4400 | | const alignment = try math.powi(u32, 2, header.@"align"); |
| 4401 | | min_alignment = math.max(min_alignment, alignment); |
| 4402 | | } |
| 4403 | | |
| 4404 | | assert(min_alignment > 0); |
| 4405 | | const last_header = self.sections.items(.header)[indexes.end - 1]; |
| 4406 | | const shift: u32 = shift: { |
| 4407 | | const diff = seg.filesize - last_header.offset - last_header.size; |
| 4408 | | const factor = @divTrunc(diff, min_alignment); |
| 4409 | | break :shift @intCast(u32, factor * min_alignment); |
| 4410 | | }; |
| 4411 | | |
| 4412 | | if (shift > 0) { |
| 4413 | | for (self.sections.items(.header)[indexes.start..indexes.end]) |*header| { |
| 4414 | | header.offset += shift; |
| 4415 | | header.addr += shift; |
| 4416 | | } |
| 4417 | | } |
| 4418 | | } |
| 4419 | | |
| 4420 | | try self.allocateSegment(self.data_const_segment_cmd_index, &.{ |
| 4421 | | self.text_segment_cmd_index, |
| 4422 | | self.pagezero_segment_cmd_index, |
| 4423 | | }, 0); |
| 4424 | | |
| 4425 | | try self.allocateSegment(self.data_segment_cmd_index, &.{ |
| 4426 | | self.data_const_segment_cmd_index, |
| 4427 | | self.text_segment_cmd_index, |
| 4428 | | self.pagezero_segment_cmd_index, |
| 4429 | | }, 0); |
| 4430 | | |
| 4431 | | try self.allocateSegment(self.linkedit_segment_cmd_index, &.{ |
| 4432 | | self.data_segment_cmd_index, |
| 4433 | | self.data_const_segment_cmd_index, |
| 4434 | | self.text_segment_cmd_index, |
| 4435 | | self.pagezero_segment_cmd_index, |
| 4436 | | }, 0); |
| 4437 | | } |
| 4438 | | |
| 4439 | | fn allocateSegment(self: *MachO, maybe_index: ?u8, indices: []const ?u8, init_size: u64) !void { |
| 4440 | | const index = maybe_index orelse return; |
| 4441 | | const seg = &self.segments.items[index]; |
| 4442 | | |
| 4443 | | const base = self.getSegmentAllocBase(indices); |
| 4444 | | seg.vmaddr = base.vmaddr; |
| 4445 | | seg.fileoff = base.fileoff; |
| 4446 | | seg.filesize = init_size; |
| 4447 | | seg.vmsize = init_size; |
| 4448 | | |
| 4449 | | // Allocate the sections according to their alignment at the beginning of the segment. |
| 4450 | | const indexes = self.getSectionIndexes(index); |
| 4451 | | var start = init_size; |
| 4452 | | const slice = self.sections.slice(); |
| 4453 | | for (slice.items(.header)[indexes.start..indexes.end]) |*header| { |
| 4454 | | const alignment = try math.powi(u32, 2, header.@"align"); |
| 4455 | | const start_aligned = mem.alignForwardGeneric(u64, start, alignment); |
| 4456 | | |
| 4457 | | header.offset = if (header.isZerofill()) |
| 4458 | | 0 |
| 4459 | | else |
| 4460 | | @intCast(u32, seg.fileoff + start_aligned); |
| 4461 | | header.addr = seg.vmaddr + start_aligned; |
| 4462 | | |
| 4463 | | start = start_aligned + header.size; |
| 4464 | | |
| 4465 | | if (!header.isZerofill()) { |
| 4466 | | seg.filesize = start; |
| 4467 | | } |
| 4468 | | seg.vmsize = start; |
| 4469 | | } |
| 4470 | | |
| 4471 | | seg.filesize = mem.alignForwardGeneric(u64, seg.filesize, self.page_size); |
| 4472 | | seg.vmsize = mem.alignForwardGeneric(u64, seg.vmsize, self.page_size); |
| 4473 | | } |
| 4474 | | |
| 4475 | 3608 | const InitSectionOpts = struct { |
| 4476 | 3609 | flags: u32 = macho.S_REGULAR, |
| 4477 | 3610 | reserved1: u32 = 0, |
| ... | ... | @@ -4956,7 +4089,7 @@ pub fn getGlobalSymbol(self: *MachO, name: []const u8) !u32 { |
| 4956 | 4089 | return global_index; |
| 4957 | 4090 | } |
| 4958 | 4091 | |
| 4959 | | fn getSegmentAllocBase(self: MachO, indices: []const ?u8) struct { vmaddr: u64, fileoff: u64 } { |
| 4092 | pub fn getSegmentAllocBase(self: MachO, indices: []const ?u8) struct { vmaddr: u64, fileoff: u64 } { |
| 4960 | 4093 | for (indices) |maybe_prev_id| { |
| 4961 | 4094 | const prev_id = maybe_prev_id orelse continue; |
| 4962 | 4095 | const prev = self.segments.items[prev_id]; |
| ... | ... | @@ -4968,7 +4101,7 @@ fn getSegmentAllocBase(self: MachO, indices: []const ?u8) struct { vmaddr: u64, |
| 4968 | 4101 | return .{ .vmaddr = 0, .fileoff = 0 }; |
| 4969 | 4102 | } |
| 4970 | 4103 | |
| 4971 | | fn writeSegmentHeaders(self: *MachO, ncmds: *u32, writer: anytype) !void { |
| 4104 | pub fn writeSegmentHeaders(self: *MachO, ncmds: *u32, writer: anytype) !void { |
| 4972 | 4105 | for (self.segments.items) |seg, i| { |
| 4973 | 4106 | const indexes = self.getSectionIndexes(@intCast(u8, i)); |
| 4974 | 4107 | var out_seg = seg; |
| ... | ... | @@ -4997,7 +4130,7 @@ fn writeSegmentHeaders(self: *MachO, ncmds: *u32, writer: anytype) !void { |
| 4997 | 4130 | } |
| 4998 | 4131 | } |
| 4999 | 4132 | |
| 5000 | | fn writeLinkeditSegmentData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 4133 | pub fn writeLinkeditSegmentData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 5001 | 4134 | const seg = &self.segments.items[self.linkedit_segment_cmd_index.?]; |
| 5002 | 4135 | seg.filesize = 0; |
| 5003 | 4136 | seg.vmsize = 0; |
| ... | ... | @@ -5010,7 +4143,7 @@ fn writeLinkeditSegmentData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void |
| 5010 | 4143 | seg.vmsize = mem.alignForwardGeneric(u64, seg.filesize, self.page_size); |
| 5011 | 4144 | } |
| 5012 | 4145 | |
| 5013 | | fn writeDyldInfoData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 4146 | pub fn writeDyldInfoData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 5014 | 4147 | const tracy = trace(@src()); |
| 5015 | 4148 | defer tracy.end(); |
| 5016 | 4149 | |
| ... | ... | @@ -5696,7 +4829,7 @@ fn writeDysymtab(self: *MachO, ctx: SymtabCtx, lc: *macho.dysymtab_command) !voi |
| 5696 | 4829 | lc.nindirectsyms = nindirectsyms; |
| 5697 | 4830 | } |
| 5698 | 4831 | |
| 5699 | | fn writeCodeSignaturePadding( |
| 4832 | pub fn writeCodeSignaturePadding( |
| 5700 | 4833 | self: *MachO, |
| 5701 | 4834 | code_sig: *CodeSignature, |
| 5702 | 4835 | ncmds: *u32, |
| ... | ... | @@ -5725,7 +4858,7 @@ fn writeCodeSignaturePadding( |
| 5725 | 4858 | return @intCast(u32, offset); |
| 5726 | 4859 | } |
| 5727 | 4860 | |
| 5728 | | fn writeCodeSignature(self: *MachO, code_sig: *CodeSignature, offset: u32) !void { |
| 4861 | pub fn writeCodeSignature(self: *MachO, code_sig: *CodeSignature, offset: u32) !void { |
| 5729 | 4862 | const seg = self.segments.items[self.text_segment_cmd_index.?]; |
| 5730 | 4863 | |
| 5731 | 4864 | var buffer = std.ArrayList(u8).init(self.base.allocator); |
| ... | ... | @@ -5749,7 +4882,7 @@ fn writeCodeSignature(self: *MachO, code_sig: *CodeSignature, offset: u32) !void |
| 5749 | 4882 | } |
| 5750 | 4883 | |
| 5751 | 4884 | /// Writes Mach-O file header. |
| 5752 | | fn writeHeader(self: *MachO, ncmds: u32, sizeofcmds: u32) !void { |
| 4885 | pub fn writeHeader(self: *MachO, ncmds: u32, sizeofcmds: u32) !void { |
| 5753 | 4886 | var header: macho.mach_header_64 = .{}; |
| 5754 | 4887 | header.flags = macho.MH_NOUNDEFS | macho.MH_DYLDLINK | macho.MH_PIE | macho.MH_TWOLEVEL; |
| 5755 | 4888 | |
| ... | ... | @@ -6371,7 +5504,7 @@ fn generateSymbolStabsForSymbol( |
| 6371 | 5504 | // try writer.writeByte(']'); |
| 6372 | 5505 | // } |
| 6373 | 5506 | |
| 6374 | | fn logSections(self: *MachO) void { |
| 5507 | pub fn logSections(self: *MachO) void { |
| 6375 | 5508 | log.debug("sections:", .{}); |
| 6376 | 5509 | for (self.sections.items(.header)) |header, i| { |
| 6377 | 5510 | log.debug(" sect({d}): {s},{s} @{x}, sizeof({x})", .{ |
| ... | ... | @@ -6409,7 +5542,7 @@ fn logSymAttributes(sym: macho.nlist_64, buf: *[9]u8) []const u8 { |
| 6409 | 5542 | return buf[0..]; |
| 6410 | 5543 | } |
| 6411 | 5544 | |
| 6412 | | fn logSymtab(self: *MachO) void { |
| 5545 | pub fn logSymtab(self: *MachO) void { |
| 6413 | 5546 | var buf: [9]u8 = undefined; |
| 6414 | 5547 | |
| 6415 | 5548 | log.debug("symtab:", .{}); |
| ... | ... | @@ -6502,7 +5635,7 @@ fn logSymtab(self: *MachO) void { |
| 6502 | 5635 | } |
| 6503 | 5636 | } |
| 6504 | 5637 | |
| 6505 | | fn logAtoms(self: *MachO) void { |
| 5638 | pub fn logAtoms(self: *MachO) void { |
| 6506 | 5639 | log.debug("atoms:", .{}); |
| 6507 | 5640 | |
| 6508 | 5641 | const slice = self.sections.slice(); |
Jakub Konka <kubkon@jakubkonka.com> 2022-09-10 15:04:16+02:00
src