| ... | @@ -22,6 +22,7 @@ const link = @import("../link.zig"); | ... | @@ -22,6 +22,7 @@ const link = @import("../link.zig"); |
| 22 | const llvm_backend = @import("../codegen/llvm.zig"); | 22 | const llvm_backend = @import("../codegen/llvm.zig"); |
| 23 | const target_util = @import("../target.zig"); | 23 | const target_util = @import("../target.zig"); |
| 24 | const trace = @import("../tracy.zig").trace; | 24 | const trace = @import("../tracy.zig").trace; |
| | 25 | const zld = @import("MachO/zld.zig"); |
| 25 | | 26 | |
| 26 | const Air = @import("../Air.zig"); | 27 | const Air = @import("../Air.zig"); |
| 27 | const Allocator = mem.Allocator; | 28 | const Allocator = mem.Allocator; |
| ... | @@ -57,11 +58,6 @@ pub const SearchStrategy = enum { | ... | @@ -57,11 +58,6 @@ pub const SearchStrategy = enum { |
| 57 | | 58 | |
| 58 | pub const N_DESC_GCED: u16 = @bitCast(u16, @as(i16, -1)); | 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 | const Section = struct { | 61 | const Section = struct { |
| 66 | header: macho.section_64, | 62 | header: macho.section_64, |
| 67 | segment_index: u8, | 63 | segment_index: u8, |
| ... | @@ -412,7 +408,7 @@ pub fn flush(self: *MachO, comp: *Compilation, prog_node: *std.Progress.Node) !v | ... | @@ -412,7 +408,7 @@ pub fn flush(self: *MachO, comp: *Compilation, prog_node: *std.Progress.Node) !v |
| 412 | } | 408 | } |
| 413 | | 409 | |
| 414 | switch (self.mode) { | 410 | switch (self.mode) { |
| 415 | .one_shot => return self.linkOneShot(comp, prog_node), | 411 | .one_shot => return zld.linkWithZld(self, comp, prog_node), |
| 416 | .incremental => return self.flushModule(comp, prog_node), | 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 | ... | @@ -441,7 +437,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No |
| 441 | try d_sym.dwarf.flushModule(&self.base, module); | 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 | try self.resolveLibSystem(arena, comp, &.{}, &libs); | 441 | try self.resolveLibSystem(arena, comp, &.{}, &libs); |
| 446 | | 442 | |
| 447 | const id_symlink_basename = "zld.id"; | 443 | const id_symlink_basename = "zld.id"; |
| ... | @@ -531,7 +527,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No | ... | @@ -531,7 +527,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No |
| 531 | self.logAtoms(); | 527 | self.logAtoms(); |
| 532 | } | 528 | } |
| 533 | | 529 | |
| 534 | try self.writeAtomsIncremental(); | 530 | try self.writeAtoms(); |
| 535 | | 531 | |
| 536 | var lc_buffer = std.ArrayList(u8).init(arena); | 532 | var lc_buffer = std.ArrayList(u8).init(arena); |
| 537 | const lc_writer = lc_buffer.writer(); | 533 | const lc_writer = lc_buffer.writer(); |
| ... | @@ -631,635 +627,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No | ... | @@ -631,635 +627,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No |
| 631 | self.cold_start = false; | 627 | self.cold_start = false; |
| 632 | } | 628 | } |
| 633 | | 629 | |
| 634 | fn linkOneShot(self: *MachO, comp: *Compilation, prog_node: *std.Progress.Node) !void { | 630 | pub fn resolveLibSystem( |
| 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( | | |
| 1263 | self: *MachO, | 631 | self: *MachO, |
| 1264 | arena: Allocator, | 632 | arena: Allocator, |
| 1265 | comp: *Compilation, | 633 | comp: *Compilation, |
| ... | @@ -1302,7 +670,7 @@ fn resolveLibSystem( | ... | @@ -1302,7 +670,7 @@ fn resolveLibSystem( |
| 1302 | } | 670 | } |
| 1303 | } | 671 | } |
| 1304 | | 672 | |
| 1305 | fn resolveSearchDir( | 673 | pub fn resolveSearchDir( |
| 1306 | arena: Allocator, | 674 | arena: Allocator, |
| 1307 | dir: []const u8, | 675 | dir: []const u8, |
| 1308 | syslibroot: ?[]const u8, | 676 | syslibroot: ?[]const u8, |
| ... | @@ -1344,17 +712,7 @@ fn resolveSearchDir( | ... | @@ -1344,17 +712,7 @@ fn resolveSearchDir( |
| 1344 | return null; | 712 | return null; |
| 1345 | } | 713 | } |
| 1346 | | 714 | |
| 1347 | fn resolveSearchDirs(arena: Allocator, dirs: []const []const u8, syslibroot: ?[]const u8, out_dirs: anytype) !void { | 715 | pub fn resolveLib( |
| 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( | | |
| 1358 | arena: Allocator, | 716 | arena: Allocator, |
| 1359 | search_dir: []const u8, | 717 | search_dir: []const u8, |
| 1360 | name: []const u8, | 718 | name: []const u8, |
| ... | @@ -1373,7 +731,7 @@ fn resolveLib( | ... | @@ -1373,7 +731,7 @@ fn resolveLib( |
| 1373 | return full_path; | 731 | return full_path; |
| 1374 | } | 732 | } |
| 1375 | | 733 | |
| 1376 | fn resolveFramework( | 734 | pub fn resolveFramework( |
| 1377 | arena: Allocator, | 735 | arena: Allocator, |
| 1378 | search_dir: []const u8, | 736 | search_dir: []const u8, |
| 1379 | name: []const u8, | 737 | name: []const u8, |
| ... | @@ -1583,7 +941,7 @@ pub fn parseDylib( | ... | @@ -1583,7 +941,7 @@ pub fn parseDylib( |
| 1583 | return true; | 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 | for (files) |file_name| { | 945 | for (files) |file_name| { |
| 1588 | const full_path = full_path: { | 946 | const full_path = full_path: { |
| 1589 | var buffer: [fs.MAX_PATH_BYTES]u8 = undefined; | 947 | var buffer: [fs.MAX_PATH_BYTES]u8 = undefined; |
| ... | @@ -1601,7 +959,7 @@ fn parseInputFiles(self: *MachO, files: []const []const u8, syslibroot: ?[]const | ... | @@ -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 | for (files) |file_name| { | 963 | for (files) |file_name| { |
| 1606 | const full_path = full_path: { | 964 | const full_path = full_path: { |
| 1607 | var buffer: [fs.MAX_PATH_BYTES]u8 = undefined; | 965 | var buffer: [fs.MAX_PATH_BYTES]u8 = undefined; |
| ... | @@ -1614,10 +972,10 @@ fn parseAndForceLoadStaticArchives(self: *MachO, files: []const []const u8) !voi | ... | @@ -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 | self: *MachO, | 976 | self: *MachO, |
| 1619 | lib_names: []const []const u8, | 977 | lib_names: []const []const u8, |
| 1620 | lib_infos: []const SystemLib, | 978 | lib_infos: []const link.SystemLib, |
| 1621 | syslibroot: ?[]const u8, | 979 | syslibroot: ?[]const u8, |
| 1622 | dependent_libs: anytype, | 980 | dependent_libs: anytype, |
| 1623 | ) !void { | 981 | ) !void { |
| ... | @@ -1635,7 +993,7 @@ fn parseLibs( | ... | @@ -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 | // At this point, we can now parse dependents of dylibs preserving the inclusion order of: | 997 | // At this point, we can now parse dependents of dylibs preserving the inclusion order of: |
| 1640 | // 1) anything on the linker line is parsed first | 998 | // 1) anything on the linker line is parsed first |
| 1641 | // 2) afterwards, we parse dependents of the included dylibs | 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 { | ... | @@ -1935,55 +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 { | 1296 | pub fn allocateSpecialSymbols(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 { | | |
| 1987 | for (&[_][]const u8{ | 1297 | for (&[_][]const u8{ |
| 1988 | "___dso_handle", | 1298 | "___dso_handle", |
| 1989 | "__mh_execute_header", | 1299 | "__mh_execute_header", |
| ... | @@ -2002,96 +1312,7 @@ fn allocateSpecialSymbols(self: *MachO) !void { | ... | @@ -2002,96 +1312,7 @@ fn allocateSpecialSymbols(self: *MachO) !void { |
| 2002 | } | 1312 | } |
| 2003 | } | 1313 | } |
| 2004 | | 1314 | |
| 2005 | fn writeAtomsOneShot(self: *MachO) !void { | 1315 | fn writeAtoms(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 { | | |
| 2095 | assert(self.mode == .incremental); | 1316 | assert(self.mode == .incremental); |
| 2096 | | 1317 | |
| 2097 | const slice = self.sections.slice(); | 1318 | const slice = self.sections.slice(); |
| ... | @@ -2186,7 +1407,7 @@ pub fn createTlvPtrAtom(self: *MachO, target: SymbolWithLoc) !*Atom { | ... | @@ -2186,7 +1407,7 @@ pub fn createTlvPtrAtom(self: *MachO, target: SymbolWithLoc) !*Atom { |
| 2186 | return atom; | 1407 | return atom; |
| 2187 | } | 1408 | } |
| 2188 | | 1409 | |
| 2189 | fn createDyldPrivateAtom(self: *MachO) !void { | 1410 | pub fn createDyldPrivateAtom(self: *MachO) !void { |
| 2190 | if (self.dyld_stub_binder_index == null) return; | 1411 | if (self.dyld_stub_binder_index == null) return; |
| 2191 | if (self.dyld_private_atom != null) return; | 1412 | if (self.dyld_private_atom != null) return; |
| 2192 | | 1413 | |
| ... | @@ -2203,7 +1424,7 @@ fn createDyldPrivateAtom(self: *MachO) !void { | ... | @@ -2203,7 +1424,7 @@ fn createDyldPrivateAtom(self: *MachO) !void { |
| 2203 | try self.atom_by_index_table.putNoClobber(gpa, sym_index, atom); | 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 | if (self.dyld_stub_binder_index == null) return; | 1428 | if (self.dyld_stub_binder_index == null) return; |
| 2208 | if (self.stub_helper_preamble_atom != null) return; | 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 { | ... | @@ -2509,7 +1730,7 @@ pub fn createStubAtom(self: *MachO, laptr_sym_index: u32) !*Atom { |
| 2509 | return atom; | 1730 | return atom; |
| 2510 | } | 1731 | } |
| 2511 | | 1732 | |
| 2512 | fn createTentativeDefAtoms(self: *MachO) !void { | 1733 | pub fn createTentativeDefAtoms(self: *MachO) !void { |
| 2513 | const gpa = self.base.allocator; | 1734 | const gpa = self.base.allocator; |
| 2514 | | 1735 | |
| 2515 | for (self.globals.items) |global| { | 1736 | for (self.globals.items) |global| { |
| ... | @@ -2554,7 +1775,7 @@ fn createTentativeDefAtoms(self: *MachO) !void { | ... | @@ -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 | if (self.base.options.output_mode != .Exe) return; | 1779 | if (self.base.options.output_mode != .Exe) return; |
| 2559 | if (self.getGlobal("__mh_execute_header")) |global| { | 1780 | if (self.getGlobal("__mh_execute_header")) |global| { |
| 2560 | const sym = self.getSymbol(global); | 1781 | const sym = self.getSymbol(global); |
| ... | @@ -2577,7 +1798,7 @@ fn createMhExecuteHeaderSymbol(self: *MachO) !void { | ... | @@ -2577,7 +1798,7 @@ fn createMhExecuteHeaderSymbol(self: *MachO) !void { |
| 2577 | gop.value_ptr.* = sym_loc; | 1798 | gop.value_ptr.* = sym_loc; |
| 2578 | } | 1799 | } |
| 2579 | | 1800 | |
| 2580 | fn createDsoHandleSymbol(self: *MachO) !void { | 1801 | pub fn createDsoHandleSymbol(self: *MachO) !void { |
| 2581 | const global = self.getGlobalPtr("___dso_handle") orelse return; | 1802 | const global = self.getGlobalPtr("___dso_handle") orelse return; |
| 2582 | if (!self.getSymbol(global.*).undf()) return; | 1803 | if (!self.getSymbol(global.*).undf()) return; |
| 2583 | | 1804 | |
| ... | @@ -2652,7 +1873,7 @@ fn resolveGlobalSymbol(self: *MachO, current: SymbolWithLoc) !void { | ... | @@ -2652,7 +1873,7 @@ fn resolveGlobalSymbol(self: *MachO, current: SymbolWithLoc) !void { |
| 2652 | gop.value_ptr.* = current; | 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 | const object = &self.objects.items[object_id]; | 1877 | const object = &self.objects.items[object_id]; |
| 2657 | log.debug("resolving symbols in '{s}'", .{object.name}); | 1878 | log.debug("resolving symbols in '{s}'", .{object.name}); |
| 2658 | | 1879 | |
| ... | @@ -2705,7 +1926,7 @@ fn resolveSymbolsInObject(self: *MachO, object_id: u16) !void { | ... | @@ -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 | if (self.archives.items.len == 0) return; | 1930 | if (self.archives.items.len == 0) return; |
| 2710 | | 1931 | |
| 2711 | const gpa = self.base.allocator; | 1932 | const gpa = self.base.allocator; |
| ... | @@ -2736,7 +1957,7 @@ fn resolveSymbolsInArchives(self: *MachO) !void { | ... | @@ -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 | if (self.dylibs.items.len == 0) return; | 1961 | if (self.dylibs.items.len == 0) return; |
| 2741 | | 1962 | |
| 2742 | const gpa = self.base.allocator; | 1963 | const gpa = self.base.allocator; |
| ... | @@ -2782,7 +2003,7 @@ fn resolveSymbolsInDylibs(self: *MachO) !void { | ... | @@ -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 | const is_lib = self.base.options.output_mode == .Lib; | 2007 | const is_lib = self.base.options.output_mode == .Lib; |
| 2787 | const is_dyn_lib = self.base.options.link_mode == .Dynamic and is_lib; | 2008 | const is_dyn_lib = self.base.options.link_mode == .Dynamic and is_lib; |
| 2788 | const allow_undef = is_dyn_lib and (self.base.options.allow_shlib_undefined orelse false); | 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 { | ... | @@ -2825,7 +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 | if (self.dyld_stub_binder_index != null) return; | 2050 | if (self.dyld_stub_binder_index != null) return; |
| 2830 | if (self.unresolved.count() == 0) return; // no need for a stub binder if we don't have any imports | 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 { | ... | @@ -2872,7 +2093,7 @@ fn resolveDyldStubBinder(self: *MachO) !void { |
| 2872 | self.got_entries.items[got_index].sym_index = got_atom.sym_index; | 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 | const name_len = mem.sliceTo(default_dyld_path, 0).len; | 2097 | const name_len = mem.sliceTo(default_dyld_path, 0).len; |
| 2877 | const cmdsize = @intCast(u32, mem.alignForwardGeneric( | 2098 | const cmdsize = @intCast(u32, mem.alignForwardGeneric( |
| 2878 | u64, | 2099 | u64, |
| ... | @@ -2892,7 +2113,7 @@ fn writeDylinkerLC(ncmds: *u32, lc_writer: anytype) !void { | ... | @@ -2892,7 +2113,7 @@ fn writeDylinkerLC(ncmds: *u32, lc_writer: anytype) !void { |
| 2892 | ncmds.* += 1; | 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 | if (self.base.options.output_mode != .Exe) return; | 2117 | if (self.base.options.output_mode != .Exe) return; |
| 2897 | const seg = self.segments.items[self.text_segment_cmd_index.?]; | 2118 | const seg = self.segments.items[self.text_segment_cmd_index.?]; |
| 2898 | const global = try self.getEntryPoint(); | 2119 | const global = try self.getEntryPoint(); |
| ... | @@ -2914,7 +2135,7 @@ const WriteDylibLCCtx = struct { | ... | @@ -2914,7 +2135,7 @@ const WriteDylibLCCtx = struct { |
| 2914 | compatibility_version: u32 = 0x10000, | 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 | const name_len = ctx.name.len + 1; | 2139 | const name_len = ctx.name.len + 1; |
| 2919 | const cmdsize = @intCast(u32, mem.alignForwardGeneric( | 2140 | const cmdsize = @intCast(u32, mem.alignForwardGeneric( |
| 2920 | u64, | 2141 | u64, |
| ... | @@ -2940,7 +2161,7 @@ fn writeDylibLC(ctx: WriteDylibLCCtx, ncmds: *u32, lc_writer: anytype) !void { | ... | @@ -2940,7 +2161,7 @@ fn writeDylibLC(ctx: WriteDylibLCCtx, ncmds: *u32, lc_writer: anytype) !void { |
| 2940 | ncmds.* += 1; | 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 | if (self.base.options.output_mode != .Lib) return; | 2165 | if (self.base.options.output_mode != .Lib) return; |
| 2945 | const install_name = self.base.options.install_name orelse self.base.options.emit.?.sub_path; | 2166 | const install_name = self.base.options.install_name orelse self.base.options.emit.?.sub_path; |
| 2946 | const curr = self.base.options.version orelse std.builtin.Version{ | 2167 | const curr = self.base.options.version orelse std.builtin.Version{ |
| ... | @@ -2986,7 +2207,7 @@ const RpathIterator = struct { | ... | @@ -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 | const gpa = self.base.allocator; | 2211 | const gpa = self.base.allocator; |
| 2991 | | 2212 | |
| 2992 | var it = RpathIterator.init(gpa, self.base.options.rpath_list); | 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 { | ... | @@ -3013,7 +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 | const cmdsize = @sizeOf(macho.build_version_command) + @sizeOf(macho.build_tool_version); | 2238 | const cmdsize = @sizeOf(macho.build_version_command) + @sizeOf(macho.build_tool_version); |
| 3018 | const platform_version = blk: { | 2239 | const platform_version = blk: { |
| 3019 | const ver = self.base.options.target.os.version_range.semver.min; | 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 { | ... | @@ -3046,7 +2267,7 @@ fn writeBuildVersionLC(self: *MachO, ncmds: *u32, lc_writer: anytype) !void { |
| 3046 | ncmds.* += 1; | 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 | for (self.referenced_dylibs.keys()) |id| { | 2271 | for (self.referenced_dylibs.keys()) |id| { |
| 3051 | const dylib = self.dylibs.items[id]; | 2272 | const dylib = self.dylibs.items[id]; |
| 3052 | const dylib_id = dylib.id orelse unreachable; | 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 | ... | @@ -4035,7 +3256,7 @@ pub fn getDeclVAddr(self: *MachO, decl_index: Module.Decl.Index, reloc_info: Fil |
| 4035 | return 0; | 3256 | return 0; |
| 4036 | } | 3257 | } |
| 4037 | | 3258 | |
| 4038 | fn populateMissingMetadata(self: *MachO) !void { | 3259 | pub fn populateMissingMetadata(self: *MachO) !void { |
| 4039 | const gpa = self.base.allocator; | 3260 | const gpa = self.base.allocator; |
| 4040 | const cpu_arch = self.base.options.target.cpu.arch; | 3261 | const cpu_arch = self.base.options.target.cpu.arch; |
| 4041 | const pagezero_vmsize = self.base.options.pagezero_size orelse default_pagezero_vmsize; | 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 { | ... | @@ -4367,7 +3588,7 @@ fn calcLCsSize(self: *MachO, assume_max_path_len: bool) !u32 { |
| 4367 | return @intCast(u32, sizeofcmds); | 3588 | return @intCast(u32, sizeofcmds); |
| 4368 | } | 3589 | } |
| 4369 | | 3590 | |
| 4370 | fn calcMinHeaderPad(self: *MachO) !u64 { | 3591 | pub fn calcMinHeaderPad(self: *MachO) !u64 { |
| 4371 | var padding: u32 = (try self.calcLCsSize(false)) + (self.base.options.headerpad_size orelse 0); | 3592 | var padding: u32 = (try self.calcLCsSize(false)) + (self.base.options.headerpad_size orelse 0); |
| 4372 | log.debug("minimum requested headerpad size 0x{x}", .{padding + @sizeOf(macho.mach_header_64)}); | 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 { | ... | @@ -4384,94 +3605,6 @@ fn calcMinHeaderPad(self: *MachO) !u64 { |
| 4384 | return offset; | 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 | const InitSectionOpts = struct { | 3608 | const InitSectionOpts = struct { |
| 4476 | flags: u32 = macho.S_REGULAR, | 3609 | flags: u32 = macho.S_REGULAR, |
| 4477 | reserved1: u32 = 0, | 3610 | reserved1: u32 = 0, |
| ... | @@ -4956,7 +4089,7 @@ pub fn getGlobalSymbol(self: *MachO, name: []const u8) !u32 { | ... | @@ -4956,7 +4089,7 @@ pub fn getGlobalSymbol(self: *MachO, name: []const u8) !u32 { |
| 4956 | return global_index; | 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 | for (indices) |maybe_prev_id| { | 4093 | for (indices) |maybe_prev_id| { |
| 4961 | const prev_id = maybe_prev_id orelse continue; | 4094 | const prev_id = maybe_prev_id orelse continue; |
| 4962 | const prev = self.segments.items[prev_id]; | 4095 | const prev = self.segments.items[prev_id]; |
| ... | @@ -4968,7 +4101,7 @@ fn getSegmentAllocBase(self: MachO, indices: []const ?u8) struct { vmaddr: u64, | ... | @@ -4968,7 +4101,7 @@ fn getSegmentAllocBase(self: MachO, indices: []const ?u8) struct { vmaddr: u64, |
| 4968 | return .{ .vmaddr = 0, .fileoff = 0 }; | 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 | for (self.segments.items) |seg, i| { | 4105 | for (self.segments.items) |seg, i| { |
| 4973 | const indexes = self.getSectionIndexes(@intCast(u8, i)); | 4106 | const indexes = self.getSectionIndexes(@intCast(u8, i)); |
| 4974 | var out_seg = seg; | 4107 | var out_seg = seg; |
| ... | @@ -4997,7 +4130,7 @@ fn writeSegmentHeaders(self: *MachO, ncmds: *u32, writer: anytype) !void { | ... | @@ -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 | const seg = &self.segments.items[self.linkedit_segment_cmd_index.?]; | 4134 | const seg = &self.segments.items[self.linkedit_segment_cmd_index.?]; |
| 5002 | seg.filesize = 0; | 4135 | seg.filesize = 0; |
| 5003 | seg.vmsize = 0; | 4136 | seg.vmsize = 0; |
| ... | @@ -5010,7 +4143,7 @@ fn writeLinkeditSegmentData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void | ... | @@ -5010,7 +4143,7 @@ fn writeLinkeditSegmentData(self: *MachO, ncmds: *u32, lc_writer: anytype) !void |
| 5010 | seg.vmsize = mem.alignForwardGeneric(u64, seg.filesize, self.page_size); | 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 | const tracy = trace(@src()); | 4147 | const tracy = trace(@src()); |
| 5015 | defer tracy.end(); | 4148 | defer tracy.end(); |
| 5016 | | 4149 | |
| ... | @@ -5696,7 +4829,7 @@ fn writeDysymtab(self: *MachO, ctx: SymtabCtx, lc: *macho.dysymtab_command) !voi | ... | @@ -5696,7 +4829,7 @@ fn writeDysymtab(self: *MachO, ctx: SymtabCtx, lc: *macho.dysymtab_command) !voi |
| 5696 | lc.nindirectsyms = nindirectsyms; | 4829 | lc.nindirectsyms = nindirectsyms; |
| 5697 | } | 4830 | } |
| 5698 | | 4831 | |
| 5699 | fn writeCodeSignaturePadding( | 4832 | pub fn writeCodeSignaturePadding( |
| 5700 | self: *MachO, | 4833 | self: *MachO, |
| 5701 | code_sig: *CodeSignature, | 4834 | code_sig: *CodeSignature, |
| 5702 | ncmds: *u32, | 4835 | ncmds: *u32, |
| ... | @@ -5725,7 +4858,7 @@ fn writeCodeSignaturePadding( | ... | @@ -5725,7 +4858,7 @@ fn writeCodeSignaturePadding( |
| 5725 | return @intCast(u32, offset); | 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 | const seg = self.segments.items[self.text_segment_cmd_index.?]; | 4862 | const seg = self.segments.items[self.text_segment_cmd_index.?]; |
| 5730 | | 4863 | |
| 5731 | var buffer = std.ArrayList(u8).init(self.base.allocator); | 4864 | var buffer = std.ArrayList(u8).init(self.base.allocator); |
| ... | @@ -5749,7 +4882,7 @@ fn writeCodeSignature(self: *MachO, code_sig: *CodeSignature, offset: u32) !void | ... | @@ -5749,7 +4882,7 @@ fn writeCodeSignature(self: *MachO, code_sig: *CodeSignature, offset: u32) !void |
| 5749 | } | 4882 | } |
| 5750 | | 4883 | |
| 5751 | /// Writes Mach-O file header. | 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 | var header: macho.mach_header_64 = .{}; | 4886 | var header: macho.mach_header_64 = .{}; |
| 5754 | header.flags = macho.MH_NOUNDEFS | macho.MH_DYLDLINK | macho.MH_PIE | macho.MH_TWOLEVEL; | 4887 | header.flags = macho.MH_NOUNDEFS | macho.MH_DYLDLINK | macho.MH_PIE | macho.MH_TWOLEVEL; |
| 5755 | | 4888 | |
| ... | @@ -6371,7 +5504,7 @@ fn generateSymbolStabsForSymbol( | ... | @@ -6371,7 +5504,7 @@ fn generateSymbolStabsForSymbol( |
| 6371 | // try writer.writeByte(']'); | 5504 | // try writer.writeByte(']'); |
| 6372 | // } | 5505 | // } |
| 6373 | | 5506 | |
| 6374 | fn logSections(self: *MachO) void { | 5507 | pub fn logSections(self: *MachO) void { |
| 6375 | log.debug("sections:", .{}); | 5508 | log.debug("sections:", .{}); |
| 6376 | for (self.sections.items(.header)) |header, i| { | 5509 | for (self.sections.items(.header)) |header, i| { |
| 6377 | log.debug(" sect({d}): {s},{s} @{x}, sizeof({x})", .{ | 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 { | ... | @@ -6409,7 +5542,7 @@ fn logSymAttributes(sym: macho.nlist_64, buf: *[9]u8) []const u8 { |
| 6409 | return buf[0..]; | 5542 | return buf[0..]; |
| 6410 | } | 5543 | } |
| 6411 | | 5544 | |
| 6412 | fn logSymtab(self: *MachO) void { | 5545 | pub fn logSymtab(self: *MachO) void { |
| 6413 | var buf: [9]u8 = undefined; | 5546 | var buf: [9]u8 = undefined; |
| 6414 | | 5547 | |
| 6415 | log.debug("symtab:", .{}); | 5548 | log.debug("symtab:", .{}); |
| ... | @@ -6502,7 +5635,7 @@ fn logSymtab(self: *MachO) void { | ... | @@ -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 | log.debug("atoms:", .{}); | 5639 | log.debug("atoms:", .{}); |
| 6507 | | 5640 | |
| 6508 | const slice = self.sections.slice(); | 5641 | const slice = self.sections.slice(); |
Jakub Konka <kubkon@jakubkonka.com> 2022-09-10 15:04:16+02:00